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Khanra P, Ghosh S, Aleja D, Alfaro-Bittner K, Contreras-Aso G, Criado R, Romance M, Boccaletti S, Pal P, Hens C. Endowing networks with desired symmetries and modular behavior. Phys Rev E 2023; 108:054309. [PMID: 38115459 DOI: 10.1103/physreve.108.054309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 10/18/2023] [Indexed: 12/21/2023]
Abstract
Symmetries in a network regulate its organization into functional clustered states. Given a generic ensemble of nodes and a desirable cluster (or group of clusters), we exploit the direct connection between the elements of the eigenvector centrality and the graph symmetries to generate a network equipped with the desired cluster(s), with such a synthetical structure being furthermore perfectly reflected in the modular organization of the network's functioning. Our results solve a relevant problem of designing a desired set of clusters and are of generic application in all cases where a desired parallel functioning needs to be blueprinted.
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Affiliation(s)
- P Khanra
- Department of Mathematics, State University of New York at Buffalo, Buffalo 14260, USA
| | - S Ghosh
- Center for Computational Natural Sciences and Bioinformatics, International Institute of Information Technology, Gachibowli, Hyderabad 500032, India
| | - D Aleja
- Universidad Rey Juan Carlos, Calle Tulipán s/n, 28933 Móstoles, Madrid, Spain
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, USA
| | - K Alfaro-Bittner
- Universidad Rey Juan Carlos, Calle Tulipán s/n, 28933 Móstoles, Madrid, Spain
| | - G Contreras-Aso
- Universidad Rey Juan Carlos, Calle Tulipán s/n, 28933 Móstoles, Madrid, Spain
| | - R Criado
- Universidad Rey Juan Carlos, Calle Tulipán s/n, 28933 Móstoles, Madrid, Spain
| | - M Romance
- Universidad Rey Juan Carlos, Calle Tulipán s/n, 28933 Móstoles, Madrid, Spain
| | - S Boccaletti
- Universidad Rey Juan Carlos, Calle Tulipán s/n, 28933 Móstoles, Madrid, Spain
- CNR - Institute of Complex Systems, Via Madonna del Piano 10, I-50019 Sesto Fiorentino, Italy
- Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, 141701, Russian Federation
- Complex Systems Lab, Department of Physics, Indian Institute of Technology, Indore - Simrol, Indore 453552, India
| | - P Pal
- Department of Mathematics, National Institute of Technology, Durgapur 713209, India
| | - C Hens
- Center for Computational Natural Sciences and Bioinformatics, International Institute of Information Technology, Gachibowli, Hyderabad 500032, India
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Renaud-Picard B, Daigneault T, Berra G, Olivia M, Fortunato J, Hwang D, Pal P, Juvet S, Martinu T. Airway Epithelial Cell Apoptosis in Acute Cellular Rejection (ACR) and Chronic Lung Allograft Dysfunction (CLAD). J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Pal P, Bhatta R, Bhattarai R, Acharya P, Singh S, Harries AD. Antimicrobial resistance in bacteria isolated from the poultry production system in Nepal. Public Health Action 2022; 12:165-170. [PMID: 36561909 PMCID: PMC9716825 DOI: 10.5588/pha.22.0014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 08/26/2022] [Indexed: 12/03/2022] Open
Abstract
SETTING Twenty poultry farms in five provinces of Nepal were selected for studying bacterial pathogens and their antimicrobial resistance (AMR) patterns. OBJECTIVE To document the proportion of cloacal swabs collected from 3,230 broiler and 3,230 layer chickens from September to December 2021 that grew isolates of Escherichia coli, Enterococcus spp. and Salmonella spp. along with their AMR patterns. DESIGN This was a cross-sectional descriptive study. RESULTS In broiler birds, Enterococcus spp., Salmonella spp. and E. coli were identified in respectively 36%, 39% and 63% of swabs. In layer birds, Enterococcus spp., Salmonella spp. and E. coli were identified in respectively 31%, 48% and 60% of swabs. For both bird types, there was variation in bacterial prevalence between the regions. For all three bacterial isolates, the lowest antimicrobial resistance was found with amikacin. For the other nine antibiotics tested, >50% of bacterial isolates showed resistance; between 60% and 90% of isolates showed resistance to ciprofloxacin and trimethoprim-sulfamethoxazole. Multidrug resistance ranged from 45% to 46% for Salmonella spp., 37-44% for E. coli and 13-17% for Enterococcus spp. CONCLUSION This study shows that a large proportion of poultry in Nepal are infected with potentially pathogenic bacteria, and these are frequently resistant to commonly used antibiotics. Nepal urgently needs to implement corrective measures.
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Affiliation(s)
- P. Pal
- Agriculture and Forestry University, Chitwan, Nepal
| | - R. Bhatta
- Agriculture and Forestry University, Chitwan, Nepal
| | - R. Bhattarai
- Agriculture and Forestry University, Chitwan, Nepal
| | - P. Acharya
- Agriculture and Forestry University, Chitwan, Nepal
| | - S. Singh
- Agriculture and Forestry University, Chitwan, Nepal
| | - A. D. Harries
- International Union Against Tuberculosis and Lung Disease, Paris, France
, London School of Hygiene & Tropical Medicine, London, UK
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Malhotra M, Roy M, Pal P. A membrane-based green and low-cost system for ensuring safe drinking water in a selenium-affected region. J Environ Manage 2022; 324:116361. [PMID: 36198222 DOI: 10.1016/j.jenvman.2022.116361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 09/17/2022] [Accepted: 09/22/2022] [Indexed: 06/16/2023]
Abstract
Towards an efficient, low-cost solution to the problem of contamination of groundwater by selenium leached out from earth's mineral crust, a new system is developed using a novel graphene-based nanocomposite membrane. The system not only purified selenium-contaminated groundwater with high degree but also ensured safe disposal of the rejected selenium through algorithmic chemical stabilization in a mineral matrix. All experiments were conducted with live contaminated water from selenium affected area rather than using synthetic solution in a semi-pilot unit involving a largely fouling-free flat sheet cross-flow membrane module. Pure water flux of up to 190 Lm-2h-1(LMH) with 96-97% selenium rejection at an optimum operating pressure of only 14 bar could be achieved. Rejected selenium was stabilized in mineral matrix through chemical coagulation-precipitation using suitable coagulants following prior optimization of the critical operating parameters by Model-based calibration toolbox (MATLAB R2020a). A high degree of stabilization efficiency (99.8%) could be achieved as reflected in an error-index of only 1.13%. For selenium-affected region, the membrane-integrated hybrid treatment system proved to be a potential candidate technology offering safe drinking water at an approximate cost of only 1.77 $/m3 which was found to be affordable to the consumers in subsequent willingness to pay survey.
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Affiliation(s)
- M Malhotra
- Environment and Membrane Technology Laboratory, Department of Chemical Engineering, National Institute of Technology Durgapur, 713209, India
| | - M Roy
- Department of Management Studies, National Institute of Technology Durgapur, 713209, India
| | - P Pal
- Environment and Membrane Technology Laboratory, Department of Chemical Engineering, National Institute of Technology Durgapur, 713209, India.
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Swarnalatha V, Purohit S, Pal P, Sharma RK. Enhanced etching characteristics of Si{100} in NaOH-based two-component solution. Micro and Nano Syst Lett 2022. [DOI: 10.1186/s40486-022-00152-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
AbstractSilicon wet bulk micromachining is the most widely used technique for the fabrication of diverse microstructures such as cantilevers, cavities, etc. in laboratory as well as in industry for micro-electromechanical system (MEMS) application. Although, increasing the throughput remains inevitable, and can be done by increasing the etching rate. Furthermore, freestanding structure release time can be reduced by the improved undercutting rate at convex corners. In this work, we have investigated the etching characteristics of a non-conventional etchant in the form of hydroxylamine (NH2OH) added sodium hydroxide (NaOH) solution. This research is focused on Si{100} wafer as this orientation is largely used in the fabrication of planer devices (e.g., complementary metal-oxide semiconductors) and microelectromechanical systems (e.g., inertial sensors). We have performed a systematic and parametric analysis without and with 12% NH2OH in 10 M NaOH for improved etching characteristics such as etch rate, undercutting at convex corners, and etched surface morphology. 3D scanning laser microscope is used to measure average surface roughness (Ra), etch depth (d), and undercutting length (l). Morphology of the etched Si{100} surface is examined using optical and scanning electron microscopes. The addition of NH2OH in NaOH solution remarkably exhibited a two-fold increment in the etching rate of a Si{100} surface. Furthermore, the addition of NH2OH significantly improves the etched surface morphology and undercutting at convex corners. Undercutting at convex corners is highly prudent for the quick release of microstructures from the substrate. In addition, we have studied the effect of etchant age on etching characteristics. Results presented in this article are of large significance for engineering applications in both academic and industrial laboratories.
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Petricca J, French C, Ajaj R, Zelifan A, Grant B, Zhan L, Zhang Y, Thakral A, Nicholls D, Hsu YH, Pal P, Cabanero M, Tsao M, Liu G. EP11.02-001 Natural Language Processing to Abstract Preneoplastic and Incidental Pulmonary Lesions from Pathology Reports. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Pal S, Ahamed Z, Pal P. Removal of antibiotics and pharmaceutically active compounds from water Environment: Experiments towards industrial scale up. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121249] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Pal P, Lakhtakia S, Reddy DN. Gastrointestinal: Spontaneous colonic migration of NAGI stent causing luminal obstruction: An unusual complication of EUS-guided drainage of WON. J Gastroenterol Hepatol 2022; 37:961. [PMID: 34936122 DOI: 10.1111/jgh.15740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 10/28/2021] [Accepted: 11/16/2021] [Indexed: 12/09/2022]
Affiliation(s)
- P Pal
- Asian Institute of Gastroenterology, Hyderabad, India
| | - S Lakhtakia
- Asian Institute of Gastroenterology, Hyderabad, India
| | - D N Reddy
- Asian Institute of Gastroenterology, Hyderabad, India
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Netravathi M, Dhamija K, Gupta M, Tamborska A, Nalini A, Holla V, Nitish L, Menon D, Pal P, Seena V, Yadav R, Ravindranadh M, Faheem A, Saini J, Mahadevan A, Solomon T, Singh B. COVID-19 vaccine associated demyelination & its association with MOG antibody. Mult Scler Relat Disord 2022; 60:103739. [PMID: 35306244 PMCID: PMC8917969 DOI: 10.1016/j.msard.2022.103739] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 03/05/2022] [Accepted: 03/11/2022] [Indexed: 02/02/2023]
Abstract
BACKGROUND ChAdOx1-S (Covishield™/Vaxzervria, AstraZeneca) and BBV152 (Covaxin) SARS-CoV-2 vaccines are proven to be safe and effective, but rare complications have been reported. OBJECTIVE To describe reports of central nervous system (CNS) demyelination following ChAdOx1-S and BBV152 vaccinations. METHODS & RESULTS We report 29 (17 female; mean 38 years) cases of CNS demyelination; twenty-seven occurred in temporal association with ChAdOx1-S vaccine; two in association with BBV152 vaccine. Eleven patients had presentation with myelitis, six patients developed optic neuritis, five had acute demyelinating encephalomyelitis, three presented with brainstem demyelination, and four had multiaxial involvement. Myelin oligodendrocyte glycoprotein (MOG) antibodies were positive in ten patients. One patient with ADEM and tumefactive demyelinating lesions died after a prolonged intensive care unit stay and superimposed infection. As compared to the control group (87); the postvaccinial cases were found to have a significantly higher mean age, presence of encephalopathy (p value:0.0007), CSF pleocytosis (p value: 0.0094) and raised CSF protein (p value: 0.0062). CONCLUSIONS It is difficult to establish a causal relationship between vaccination and neurological adverse events such as demyelination. The temporal association with the vaccination and the presence of MOG antibodies raises the possibility of an immunogenic process triggered by the vaccine in susceptible individuals.
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Affiliation(s)
- M. Netravathi
- Department of Neurology, National Institute of Mental Health & Neurosciences, Bangalore, India,Corresponding author
| | - Kamakshi Dhamija
- Department of Neurology, National Institute of Mental Health & Neurosciences, Bangalore, India
| | - Manisha Gupta
- Department of Neurology, National Institute of Mental Health & Neurosciences, Bangalore, India
| | - Arina Tamborska
- National Institute for Health Research Health Protection Unit for Emerging and Zoonotic Infections, University of Liverpool, United Kingdom,Department of Neurology, The Walton Centre NHS Foundation Trust, Liverpool, United Kingdom,Department of Clinical Infection Microbiology and Immunology, Institute for Infection, Veterinary and Ecological Sciences, University of Liverpool, United Kingdom
| | - A. Nalini
- Department of Neurology, National Institute of Mental Health & Neurosciences, Bangalore, India
| | - V.V. Holla
- Department of Neurology, National Institute of Mental Health & Neurosciences, Bangalore, India
| | - L.K. Nitish
- Department of Neurology, National Institute of Mental Health & Neurosciences, Bangalore, India
| | - Deepak Menon
- Department of Neurology, National Institute of Mental Health & Neurosciences, Bangalore, India
| | - P.K. Pal
- Department of Neurology, National Institute of Mental Health & Neurosciences, Bangalore, India
| | - V. Seena
- Department of Neurology, National Institute of Mental Health & Neurosciences, Bangalore, India
| | - Ravi Yadav
- Department of Neurology, National Institute of Mental Health & Neurosciences, Bangalore, India
| | - M. Ravindranadh
- Department of Neurology, National Institute of Mental Health & Neurosciences, Bangalore, India
| | - Arshad Faheem
- Department of Neurology, National Institute of Mental Health & Neurosciences, Bangalore, India
| | - J. Saini
- Department of Neuroimaging & Interventional Neuroradiology, National Institute of Mental Health & Neurosciences, Bangalore
| | - Anita Mahadevan
- Department of Neuropathology, National Institute of Mental Health & Neurosciences, Bangalore
| | - Tom Solomon
- National Institute for Health Research Health Protection Unit for Emerging and Zoonotic Infections, University of Liverpool, United Kingdom,Department of Neurology, The Walton Centre NHS Foundation Trust, Liverpool, United Kingdom,Department of Clinical Infection Microbiology and Immunology, Institute for Infection, Veterinary and Ecological Sciences, University of Liverpool, United Kingdom
| | - Bhagteshwar Singh
- National Institute for Health Research Health Protection Unit for Emerging and Zoonotic Infections, University of Liverpool, United Kingdom,Department of Clinical Infection Microbiology and Immunology, Institute for Infection, Veterinary and Ecological Sciences, University of Liverpool, United Kingdom,Department of Infectious Diseases, Christian Medical College, Vellore, India
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Lau S, Rabindranath M, Weiss J, Li J, Nirmalakumar S, Ruff H, Boerner S, Tong L, Tsao M, Pal P, Cabanero M, Hsu Y, Fung A, Sacher A, Shepherd F, Liu G, Bradbury P, Yasufuku K, Czarnecka-Kujawa K, Ko H, Leighl N, Schwock J. FP12.01 PD-L1 Assessment in Cytology is Comparable to Histology in Predicting Treatment Response to Checkpoint Inhibitors in NSCLC. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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de Santayana MGP, Czarnecka K, Waddell T, Stockley T, Law J, Le L, Pal P, Rogalla P, Kelly D, Leighl N. 191TiP Accelerating lung cancer diagnosis through liquid biopsy. J Thorac Oncol 2021. [DOI: 10.1016/s1556-0864(21)02033-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Yadav R, Jagadish A, Sheshagiri D, Kamble N, Jain S, Pal P, Kutty B. Sleep and Polysomnographic abnormalities in Indian patients with Huntington's disease. Parkinsonism Relat Disord 2020. [DOI: 10.1016/j.parkreldis.2020.06.390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Neeraja K, Holla V, Prasad S, Stezin A, Kamble N, Nethravathi M, Yadav R, Pal P. Utility of clinical exome sequencing in dystonia: A report from India. Parkinsonism Relat Disord 2020. [DOI: 10.1016/j.parkreldis.2020.06.379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Surisetti B, Neeraja K, Prasad S, Holla V, Kamble N, Yadav R, Pal P. Neuroacanthocytosis: Beyond movement disorders. Parkinsonism Relat Disord 2020. [DOI: 10.1016/j.parkreldis.2020.06.391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Youshani A, van Beijnum J, Soh C, Pal P, Karabatsou K. A multi-loculated cystic meningioma simulating an arachnoid cyst. Interdisciplinary Neurosurgery 2020. [DOI: 10.1016/j.inat.2020.100758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Renaud-Picard B, Berra G, Hwang D, Miyamoto E, Berry G, Pal P, Juvet S, Keshavjee S, Martinu T. Spectrum of Chronic Lung Allograft Pathology in Human Lung Transplantation. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.1253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Abdullah MF, Pal P, Chandrakanta K, Jena R, Devi S, Yadav CS, Singh AK. Enhanced magnetic and room temperature intrinsic magnetodielectric effect in Mn modified Ba 2Mg 2Fe 12O 22 Y-type hexaferrite. J Phys Condens Matter 2020; 32:135701. [PMID: 31775136 DOI: 10.1088/1361-648x/ab5c2b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We have reported a systematic investigation on structural, magnetic, magnetodielectric and magnetoimpedance characteristics of Y-type Ba2Mg2(Fe1-x Mn x )12O22 (0 ⩽ x ⩽ 0.12) hexaferrite synthesized by solid-state reaction route. Rietveld refinement of x-ray diffraction pattern confirms the phase purity of all the samples with rhombohedral crystal structure. The Mn dopant modulates not only superexchange angle near to the boundary of magnetic blocks but also magnetic transition temperature. Temperature-dependent magnetization data suggests that due to Mn doping at Fe sites, ferrimagnetic to proper screw transition temperature (T II) increases from 190 K to 208 K, while there is a decrease in proper screw to longitudinal conical spin transition temperature (T I) from 35 K to 25 K. We observe remarkable decrease in the magnetic field from 20 kOe to 12 kOe to produce intermediate spin ordering from ferrimagnetic ordering which can be understood because of modification of superexchange angle due to Mn doping. The value of loss tangent decreases with increasing doping concentration at 300K, i.e. ~60% and 180% in BMFM4 (x = 0.04) and BMFM8 (x = 0.08) respectively as compared to BMF, suggesting the evolution of intrinsic feature in the doped samples. Magnetodielectric (MD) effect shows that in the low-frequency regime, the robust MD effect is because of Maxwell-Wagner interfacial polarization, whereas in the high-frequency regime intrinsic effect dominates. Further, magnetoimpedance measurement confirms the presence of substantial intrinsic MD% (~6%) at 1.3 T applied field at 300 K for 4% Mn-doped sample. Finally, the nature and strength of magnetoelectric coupling in BMFM4 and BMFM8 samples at 300 K is found to be biquadratic (P 2 M 2) and maximum strength of coupling is 3.09 × 10-4 emu2 g-2 and 2.34 × 10-4 emu2 g-2, respectively.
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Affiliation(s)
- Md F Abdullah
- Department of Physics and Astronomy, National Institute of Technology, Rourkela-769008, Odisha, India
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Yadav R, Ray S, Kumar G, Pal P, Kutty B. Sleep and other non motor abnormalities in Indian patients with cervical dystonia. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.1197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Perdrizet K, Stockley T, Law J, Shabir M, Zhang T, Le L, Lau A, Tsao M, Kamel-Reid S, Pal P, Cabanero M, Schwock J, Ko H, Liu G, Bradbury P, Sacher A, Shepherd F, Leighl N. P1.01-30 Non-Small Cell Lung Cancer (NSCLC) Next Generation Sequencing (NGS): Integrating Genomic Sequencing into a Publicly Funded Health Care Model. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Chowdhury J, Islam MS, Miah AR, Saha A, Pal P, Siddique AA, Alam MS, Raihan MA. Study of the Prevalence of Dyspepsia in the Adult Population in a Rural Community of Bangladesh. Mymensingh Med J 2019; 28:163-174. [PMID: 30755566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Dyspepsia is a symptom complex that includes epigastric pain, post-prandial fullness, bloating, early satiety, belching, nausea, vomiting, heartburn, acid regurgitations and anorexia. The most widely applied definition of dyspepsia is the Rome working team formulation namely chronic or recurrent pain or discomfort centered in the upper abdomen. Till date the prevalence of dyspepsia in Bangladesh has not been studied much. The last study was done in 1987 in a rural community and the prevalence of dyspepsia was found to be 41.4%. However, associated risk factors were not assessed and definition of dyspepsia was much narrower as well as the dysmotility type dyspepsia was not included in that study. Hence it is now high time to carry out another study to see the prevalence of dyspepsia in Bangladesh and the risk factors associated with it. To determine the prevalence of dyspepsia and the demographic risk factors associated with dyspepsia in the adult population in the rural community of Bangladesh. This cross sectional population based study carried out in Ghior Union of Manikgonj district of Bangladesh from January 2007 to April 2008. All persons 18 years or above living in Ghior Union were considered as the study populations with using a pre-designed questionnaire. This study showed that the prevalence of dyspepsia to be 61.9%. Reflux- like dyspepsia was the commonest sub-type of dyspepsia without reflux symptoms comprising 43.9% of the total population and 70.9% of the dyspeptics. Dysmotility like dyspepsia comprised more than half of the dyspeptics. Nausea (40.7%) was the most predominant dysmotility like dyspeptic symptoms followed by early satiety (38.4%); 13.9% of the population had history of recurrent upper abdominal pain and 11.9% of the population had gastro-esophageal reflux disease (GERD). There was considerable overlapping (16.7%) of IBS with dyspepsia. Female sex, younger age (<40 years), low family income (<5000 Taka per month), lower educational level (up to primary level), smoking and use of NSAIDs were significantly associated with dyspepsia. The prevalence of dyspepsia in adult population of Bangladesh is 61.9% which is very high compared to other countries and also much higher than the prevalence found in our country thirty years back. A great change in the socio-economic status and lifestyle of the people along with environmental pollution and food adulteration may be responsible for this increase in prevalence. This study was conducted in only one union of this country, so it was not representative of the whole population of the country. Therefore further study with large population size including rural and urban peoples from different parts of Bangladesh is needed to estimate the accurate prevalence of dyspepsia in our country.
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Affiliation(s)
- J Chowdhury
- Dr Jayanta Chowdhury, Assistant Professor, Department of Gastroenterology(Ex), Dhaka Medical College, Dhaka, Bangladesh
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Perdrizet K, Stockley T, Tsao M, Morganstein J, Kamel-Reid S, Ranich L, Shepherd F, Bradbury P, Liu G, Hwang D, Pal P, Schwock J, Boerner S, Sacher A, Law J, Leighl N. P2.03-03 Upfront Next Generation Sequencing in NSCLC: A Publicly Funded Perspective. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Warner R, Bastianpillai C, Allchorne P, Chowdhury S, Graham S, Li CY, Pal P, Peters J, Hines J, Green J. 10,000 urology emergencies: A single centre series – The changing shape of acute urology. Int J Surg 2018. [DOI: 10.1016/j.ijsu.2018.05.634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Vaggers S, Warner R, Forster L, Ali Z, Pal P, Graham S. The relationship between ethnicity and stone composition in a large multi-ethnic London NHS Trust. Int J Surg 2018. [DOI: 10.1016/j.ijsu.2018.05.638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Banerjee R, Pal P, Girish BG, Reddy DN. Risk factors for diagnostic delay in Crohn's disease and their impact on long-term complications: how do they differ in a tuberculosis endemic region? Aliment Pharmacol Ther 2018; 47:1367-1374. [PMID: 29572889 DOI: 10.1111/apt.14617] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 08/30/2017] [Accepted: 02/26/2018] [Indexed: 12/16/2022]
Abstract
BACKGROUND The diagnosis of Crohn's disease (CD) can be delayed in clinical practice. In tuberculosis endemic areas, empirical anti-tubercular therapy further delays treatment. AIM(S) To assess risk factors for diagnostic delay and its impact on the long-term complications of Crohn's disease in India where tuberculosis is endemic. METHODS Data from a large prospectively established inflammatory bowel disease registry were analysed retrospectively. The time from onset of symptoms to diagnosis (diagnostic delay) was calculated and categorised into two groups based on median diagnostic delay. The risk factors for delay including anti-tubercular therapy were analysed. Logistic regression analysis was done to assess impact of diagnostic delay on development of stenotic and fistular complications including need for surgery. RESULTS Seven hundred and twenty Crohn's disease patients (60.3% male, median: 28 years) were included. Main outcome measures were stenosis, fistula and need for surgery. Subjects with diagnostic delay >18 months (median) developed significantly higher stenotic complications and surgery (OR 4.12; 95% CI: 2.74-6.33, P < 0.001 and OR 2.41, 95% CI: 1.68-3.42, P < 0.001), respectively, compared to those ≤18 months. There was no difference in the development of fistulous complications. 193/720 (27%) received anti-tubercular therapy which significantly contributed to diagnostic delay (OR: 2.47; 95% CI: 1.76-3.47, P < 0.001) with 47% showing initial clinical response (Crohn's disease activity index- CDAI decrease >100). Moreover, the incidence of stenotic complications was significantly higher in patients who had received prior anti-tubercular therapy (55/193 (28.49%) vs 78/527 (14.8%), P < 0.001, OR: 2.60, 95% CI: 1.64-4.12). CONCLUSIONS Diagnostic delay in Crohn's disease is associated with significantly higher stenotic complications and need for surgery. Empirical anti-tubercular therapy is the single largest contributor to diagnostic delay in tuberculosis endemic areas. Despite initial clinical response to anti-tubercular therapy, long-term stenotic complications are higher.
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Affiliation(s)
- R Banerjee
- Department of Medical Gastroenterology, Asian Institute of Gastroenterology, Hyderabad, India
| | - P Pal
- Department of Medical Gastroenterology, Asian Institute of Gastroenterology, Hyderabad, India
| | - B G Girish
- Department of Medical Gastroenterology, Asian Institute of Gastroenterology, Hyderabad, India
| | - D N Reddy
- Department of Medical Gastroenterology, Asian Institute of Gastroenterology, Hyderabad, India
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Rukmani M, Yadav R, Binukumar B, Pal P, Sathyaprabha T. Clinical and cardiac autonomic profile of Parkinsonian and cerebellar phenotypes of probable multiple system atrophy. Parkinsonism Relat Disord 2018. [DOI: 10.1016/j.parkreldis.2017.11.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Pal P, Ghosh A. Influence of TiO2 nano-particles on charge carrier transport and cell performance of PMMA-LiClO4 based nano-composite electrolytes. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2017.11.070] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Kamble N, Mastammannavar V, Yadav R, Netravathi M, Kumar K, Pal P. Non-motor symptoms in patients with autosomal dominant spinocerebellar ataxia. Parkinsonism Relat Disord 2018. [DOI: 10.1016/j.parkreldis.2017.11.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Hsiao H, Langenickel TH, Petruck J, Kode K, Ayalasomayajula S, Schuehly U, Greeley M, Pal P, Zhou W, Prescott MF, Sunkara G, Rajman I. Evaluation of Pharmacokinetic and Pharmacodynamic Drug-Drug Interaction of Sacubitril/Valsartan (LCZ696) and Sildenafil in Patients With Mild-to-Moderate Hypertension. Clin Pharmacol Ther 2017; 103:468-476. [PMID: 28599060 PMCID: PMC5836847 DOI: 10.1002/cpt.759] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 05/19/2017] [Accepted: 05/31/2017] [Indexed: 12/11/2022]
Abstract
Sacubitril/valsartan (LCZ696) is indicated for the treatment of patients with heart failure and reduced ejection fraction (HFrEF). Since patients with HFrEF may receive sacubitril/valsartan and sildenafil, both increasing cyclic guanosine monophosphate, the present study evaluated the pharmacokinetic and pharmacodynamic drug interaction potential between sacubitril/valsartan and sildenafil. In this open‐label, three‐period, single sequence study, patients with mild‐to‐moderate hypertension (153.8 ± 8.2 mmHg mean systolic blood pressure (SBP)) received a single dose of sildenafil 50 mg, sacubitril/valsartan 400 mg once daily for 5 days, and sacubitril/valsartan and sildenafil coadministration. When coadministered with sildenafil, the AUC and Cmax of valsartan decreased by 29% and 39%, respectively. Coadministration of sacubitril/valsartan and sildenafil resulted in a greater decrease in BP (–5/–4/–4 mmHg mean ambulatory SBP/DBP/MAP (mean arterial pressure)) than with sacubitril/valsartan alone. Both treatments were generally safe and well tolerated in this study; however, the additional BP reduction suggests that sildenafil should be administered cautiously in patients receiving sacubitril/valsartan. Unique identifier: NCT01601470.
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Affiliation(s)
- H‐L Hsiao
- Translational Medicine, Drug Metabolism and PharmacokineticsNovartis Institutes for BioMedical Research (NIBR)East HanoverNew JerseyUSA
| | - TH Langenickel
- Translational Medicine, Clinical Pharmacology and ProfilingNovartis Institutes for BioMedical Research (NIBR)BaselSwitzerland
| | - J Petruck
- Translational Medicine, Clinical Sciences and InnovationNovartis Institutes for BioMedical Research (NIBR)CambridgeMassachusettsUSA
| | - K Kode
- Biostatistical SciencesNovartis Healthcare Pvt. Ltd.HyderabadIndia
| | - S Ayalasomayajula
- Translational Medicine, Drug Metabolism and PharmacokineticsNovartis Institutes for BioMedical Research (NIBR)East HanoverNew JerseyUSA
| | - U Schuehly
- Translational Medicine, Clinical Pharmacology and ProfilingNovartis Institutes for BioMedical Research (NIBR)BaselSwitzerland
| | - M Greeley
- Translational Medicine, Clinical Sciences and InnovationNovartis Institutes for BioMedical Research (NIBR)CambridgeMassachusettsUSA
| | - P Pal
- Biostatistical SciencesNovartis Healthcare Pvt. Ltd.HyderabadIndia
| | - W Zhou
- Translational Medicine, Drug Metabolism and PharmacokineticsNovartis Institutes for BioMedical Research (NIBR)East HanoverNew JerseyUSA
| | - MF Prescott
- GlobalClinical DevelopmentNovartis Pharmaceuticals Corp.East HanoverNew JerseyUSA
| | - G Sunkara
- Translational Medicine, Drug Metabolism and PharmacokineticsNovartis Institutes for BioMedical Research (NIBR)East HanoverNew JerseyUSA
| | - I Rajman
- Translational Medicine, Clinical Pharmacology and ProfilingNovartis Institutes for BioMedical Research (NIBR)BaselSwitzerland
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Sreevidya L, Netravathi M, Pal P. Correlates of motor disability and fatigue with quantitative MRI parameters in relapsing remitting multiple sclerosis and neuromyelitis optica. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Pal P, Kumar R, Srivastava N, Chaudhuri J. Erratum to: A Visual Basic simulation software tool for performance analysis of a membrane-based advanced water treatment plant. Environ Sci Pollut Res Int 2017; 24:16543. [PMID: 28547374 DOI: 10.1007/s11356-017-9331-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Affiliation(s)
- P Pal
- Environment and Membrane Technology Laboratory, Chemical Engineering Department, National Institute of Technology, Durgapur, 713209, India.
| | - R Kumar
- Environment and Membrane Technology Laboratory, Chemical Engineering Department, National Institute of Technology, Durgapur, 713209, India
| | - N Srivastava
- Environment and Membrane Technology Laboratory, Chemical Engineering Department, National Institute of Technology, Durgapur, 713209, India
| | - J Chaudhuri
- Environment and Membrane Technology Laboratory, Chemical Engineering Department, National Institute of Technology, Durgapur, 713209, India
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Rao AVN, Swarnalatha V, Pal P. Etching characteristics of Si{110} in 20 wt% KOH with addition of hydroxylamine for the fabrication of bulk micromachined MEMS. Micro and Nano Syst Lett 2017. [DOI: 10.1186/s40486-017-0057-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Pal P. On the Calculation of Activity Coefficients of Strong Electrolytes in a Concentrated Solution. Z PHYS CHEM 2017. [DOI: 10.1515/zpch-1980-26117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Jordan J, Stinkens R, Jax T, Engeli S, Blaak EE, May M, Havekes B, Schindler C, Albrecht D, Pal P, Heise T, Goossens GH, Langenickel TH. Improved Insulin Sensitivity With Angiotensin Receptor Neprilysin Inhibition in Individuals With Obesity and Hypertension. Clin Pharmacol Ther 2016; 101:254-263. [DOI: 10.1002/cpt.455] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 06/27/2016] [Accepted: 08/12/2016] [Indexed: 12/16/2022]
Affiliation(s)
- J Jordan
- Institute for Clinical Pharmacology, Hannover Medical School; Hannover Germany
| | - R Stinkens
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism; Maastricht University Medical Center; Maastricht The Netherlands
| | | | - S Engeli
- Institute for Clinical Pharmacology, Hannover Medical School; Hannover Germany
| | - EE Blaak
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism; Maastricht University Medical Center; Maastricht The Netherlands
| | - M May
- Institute for Clinical Pharmacology, Hannover Medical School; Hannover Germany
| | - B Havekes
- Department of Internal Medicine, Division of Endocrinology; Maastricht University Medical Center; Maastricht The Netherlands
| | - C Schindler
- Institute for Clinical Pharmacology, Hannover Medical School; Hannover Germany
| | - D Albrecht
- Translational Medicine, Novartis Pharma AG; Basel Switzerland
| | - P Pal
- Biostatistical Sciences, Integrated Development Functions and Regions; Novartis Healthcare Pvt. Ltd; Hyderabad India
| | | | - GH Goossens
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism; Maastricht University Medical Center; Maastricht The Netherlands
| | - TH Langenickel
- Translational Medicine, Novartis Pharma AG; Basel Switzerland
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Dörner T, Posch M, Wagner F, Hüser A, Fischer T, Mooney L, Petricoul O, Maguire P, Pal P, Doucet J, Cabanski M, Kamphausen E, Oliver S. THU0313 Double-Blind, Randomized Study of VAY736 Single Dose Treatment in Patients with Primary Sjögren's Syndrome (PSS). Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.5840] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Giri P, Pal P. SAT0275 Kawasaki Disease – An Eastern Indian Cohort of 7years. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.5139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Giri P, Pal P. AB0880 Macrophage Activation Syndrome – An Indian Experience. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.5899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Mills SJ, du Plessis D, Pal P, Thompson G, Buonacorrsi G, Soh C, Parker GJM, Jackson A. Mitotic Activity in Glioblastoma Correlates with Estimated Extravascular Extracellular Space Derived from Dynamic Contrast-Enhanced MR Imaging. AJNR Am J Neuroradiol 2016; 37:811-7. [PMID: 26705318 PMCID: PMC4817231 DOI: 10.3174/ajnr.a4623] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Accepted: 10/06/2015] [Indexed: 01/02/2023]
Abstract
BACKGROUND AND PURPOSE A number of parameters derived from dynamic contrast-enhanced MR imaging and separate histologic features have been identified as potential prognosticators in high-grade glioma. This study evaluated the relationships between dynamic contrast-enhanced MRI-derived parameters and histologic features in glioblastoma multiforme. MATERIALS AND METHODS Twenty-eight patients with newly presenting glioblastoma multiforme underwent preoperative imaging (conventional imaging and T1 dynamic contrast-enhanced MRI). Parametric maps of the initial area under the contrast agent concentration curve, contrast transfer coefficient, estimate of volume of the extravascular extracellular space, and estimate of blood plasma volume were generated, and the enhancing fraction was calculated. Surgical specimens were used to assess subtype and were graded (World Health Organization classification system) and were assessed for necrosis, cell density, cellular atypia, mitotic activity, and overall vascularity scores. Quantitative assessment of endothelial surface area, vascular surface area, and a vascular profile count were made by using CD34 immunostaining. The relationships between MR imaging parameters and histopathologic features were examined. RESULTS High values of contrast transfer coefficient were associated with the presence of frank necrosis (P = .005). High values of the estimate of volume of the extravascular extracellular space were associated with a fibrillary histologic pattern (P < .01) and with increased mitotic activity (P < .05). No relationship was found between mitotic activity and histologic pattern, suggesting that the correlation between the estimate of volume of the extravascular extracellular space and mitotic activity was independent of the histologic pattern. CONCLUSIONS A correlation between the estimate of volume of the extravascular extracellular space and mitotic activity is reported. Further work is warranted to establish how dynamic contrast-enhanced MRI parameters relate to more quantitative histologic measurements, including markers of proliferation and measures of vascular endothelial growth factor expression.
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Affiliation(s)
- S J Mills
- From the Departments of Neuroradiology (S.J.M., G.T., C.S., A.J.) Imaging Science and Biomedical Engineering (S.J.M., G.T., G.B., G.J.M.P., A.J.), University of Manchester, Manchester, UK.
| | - D du Plessis
- Neuropathology (D.d.P., P.P.), Salford National Health Service Foundation Trust, Salford, UK
| | - P Pal
- Neuropathology (D.d.P., P.P.), Salford National Health Service Foundation Trust, Salford, UK
| | - G Thompson
- From the Departments of Neuroradiology (S.J.M., G.T., C.S., A.J.) Imaging Science and Biomedical Engineering (S.J.M., G.T., G.B., G.J.M.P., A.J.), University of Manchester, Manchester, UK
| | - G Buonacorrsi
- Imaging Science and Biomedical Engineering (S.J.M., G.T., G.B., G.J.M.P., A.J.), University of Manchester, Manchester, UK
| | - C Soh
- From the Departments of Neuroradiology (S.J.M., G.T., C.S., A.J.)
| | - G J M Parker
- Imaging Science and Biomedical Engineering (S.J.M., G.T., G.B., G.J.M.P., A.J.), University of Manchester, Manchester, UK
| | - A Jackson
- From the Departments of Neuroradiology (S.J.M., G.T., C.S., A.J.) Imaging Science and Biomedical Engineering (S.J.M., G.T., G.B., G.J.M.P., A.J.), University of Manchester, Manchester, UK
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Pal P, Ghosh A. Dynamics and relaxation of charge carriers in poly(methylmethacrylate)-based polymer electrolytes embedded with ionic liquid. Phys Rev E Stat Nonlin Soft Matter Phys 2015; 92:062603. [PMID: 26764720 DOI: 10.1103/physreve.92.062603] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Indexed: 06/05/2023]
Abstract
In the present paper, we have studied dynamics and relaxation of the charge carriers in polymethylmethacrylate-lithium bis(trifluoromethane sulfonyl)imide polymer electrolytes embedded with 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquid. We have analyzed the frequency dependent conductivity spectra using the random free-energy barrier model coupled with the contribution of electrode polarization in the low frequency region. The temperature dependence of ionic conductivity, and relaxation time obtained from the analysis of the spectra exhibits Vogel-Tammann-Fulcher type behavior. The Barton-Nakajima-Namikawa relation is consistent with the results obtained from the random free-energy barrier model. The scaling of ac conductivity spectra has been performed to understand the effect of temperature as well as the composition on the relaxation mechanism. The analysis of the ac conductivity also clearly indicates the existence of a nearly constant loss phenomenon at low temperatures or at high frequencies.
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Affiliation(s)
- P Pal
- Department of Solid State Physics, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - A Ghosh
- Department of Solid State Physics, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
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Paudel S, Pal P, Cove MV, Jnawali SR, Abel G, Koprowski JL, Ranabhat R. The Endangered Ganges River dolphin Platanista gangetica gangetica in Nepal: abundance, habitat and conservation threats. ENDANGER SPECIES RES 2015. [DOI: 10.3354/esr00702] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Abstract
Therapeutic plasma exchange (TPE) has been reported to be a useful adjunct in severe systemic lupus erythematosus (SLE) but paediatric literature continues to be scanty. We hereby present three cases of refractory paediatric SLE (pSLE) with thrombotic thrombocytopenic purpura (TTP), diffuse alveolar haemorrhage (DAH) and crescentic glomerulonephritis which were treated with TPE as an adjunctive therapy. TPE was carried out in haemodialysis units using the membrane filtration technique. Demonstrable benefit of TPE was seen in all three cases. In refractory pSLE, TPE may be a useful tool and should be considered. The report additionally highlights the feasibility of undertaking TPE in haemodialysis units, which is important as haemodialysis units are more readily available than dedicated apheresis units in developing countries.
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Affiliation(s)
| | - R Sinha
- Institute of Child Health, Kolkata, India
- AMRI Hospitals, Kolkata, India
| | - P Pal
- Institute of Child Health, Kolkata, India
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Giri P, Pal P. THU0527 Kawasaki Disease- an Experience from Eastern India. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.5623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Knut R, Lagerqvist U, Palmgren P, Pal P, Svedlindh P, Pohl A, Karis O. Photoinduced reduction of surface states in Fe:ZnO. J Chem Phys 2015; 142:204703. [DOI: 10.1063/1.4921570] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- R. Knut
- Department of Physics and Astronomy, Uppsala University, P.O. Box 516, SE-751 20 Uppsala, Sweden
| | - U. Lagerqvist
- Department of Chemistry Ångström, Uppsala University, P.O. Box 538, SE-751 21 Uppsala, Sweden
| | - P. Palmgren
- Department of Physics and Astronomy, Uppsala University, P.O. Box 516, SE-751 20 Uppsala, Sweden
| | - P. Pal
- MAX-Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
- CSIR-National Physical Laboratory, Dr. K. S. Krishnan Road, New Delhi 110012, India
| | - P. Svedlindh
- Department of Engineering Sciences, Uppsala University, P.O. Box 534, SE-75121 Uppsala, Sweden
| | - A. Pohl
- Department of Chemistry Ångström, Uppsala University, P.O. Box 538, SE-751 21 Uppsala, Sweden
| | - O. Karis
- Department of Physics and Astronomy, Uppsala University, P.O. Box 516, SE-751 20 Uppsala, Sweden
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Pal P, Chakrabortty S, Linnanen L. A nanofiltration-coagulation integrated system for separation and stabilization of arsenic from groundwater. Sci Total Environ 2014; 476-477:601-610. [PMID: 24496033 DOI: 10.1016/j.scitotenv.2014.01.041] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Revised: 01/11/2014] [Accepted: 01/11/2014] [Indexed: 06/03/2023]
Abstract
A membrane-integrated hybrid treatment system has been developed for continuous removal of arsenic from contaminated groundwater with simultaneous stabilization of arsenic rejects for safe disposal. Both trivalent and pentavalent arsenic could be removed by cross flow nanofiltration following a chemical pre-oxidation step for conversion of trivalent arsenic into pentavalent form. The very choice of the membrane module and its judicious integration with upstream oxidation and downstream stabilization resulted in continuous removal of more than 98% arsenic from water that contained around 190 mg L(-1) of total suspended solid, 205 mg L(-1) of total dissolved solid, 0.18 mg L(-1) of arsenic and 4.8 mg L(-1) of iron at a pH of 7.2. The used flat sheet cross flow membrane module yielded a high flux of 144-145 L m(-2) h(-1) at a transmembrane pressure of only 16 kgf·cm(-2) without the need for frequent replacement of the membranes. Transmembrane pressure, cross flow rate through the membrane module and oxidant dose were found to have pronounced effects on arsenic rejection and pure water flux. For the first time, an effective scheme for protection of the total environment has been ensured in this context where arsenic separated with high degree of efficiency has been stabilized in a solid matrix of iron and calcium under response surface optimized conditions. The study culminated in a total and sustainable solution to the problem of arsenic contamination of groundwater by offering arsenic-free water at a reasonably low price of only 1.41$·m(-3).
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Affiliation(s)
- P Pal
- Environment and Membrane Technology Laboratory, Department of Chemical Engineering, National Institute of Technology, Durgapur 713209, India.
| | - S Chakrabortty
- Environment and Membrane Technology Laboratory, Department of Chemical Engineering, National Institute of Technology, Durgapur 713209, India
| | - L Linnanen
- Laboratory of Environmental Technology, Lappeenranta University of Technology, 53851, Finland
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Chakrabortty S, Sen M, Pal P. Arsenic removal from contaminated groundwater by membrane-integrated hybrid plant: optimization and control using Visual Basic platform. Environ Sci Pollut Res Int 2014; 21:3840-3857. [PMID: 24288068 DOI: 10.1007/s11356-013-2382-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Accepted: 11/15/2013] [Indexed: 06/02/2023]
Abstract
A simulation software (ARRPA) has been developed in Microsoft Visual Basic platform for optimization and control of a novel membrane-integrated arsenic separation plant in the backdrop of absence of such software. The user-friendly, menu-driven software is based on a dynamic linearized mathematical model, developed for the hybrid treatment scheme. The model captures the chemical kinetics in the pre-treating chemical reactor and the separation and transport phenomena involved in nanofiltration. The software has been validated through extensive experimental investigations. The agreement between the outputs from computer simulation program and the experimental findings are excellent and consistent under varying operating conditions reflecting high degree of accuracy and reliability of the software. High values of the overall correlation coefficient (R (2) = 0.989) and Willmott d-index (0.989) are indicators of the capability of the software in analyzing performance of the plant. The software permits pre-analysis, manipulation of input data, helps in optimization and exhibits performance of an integrated plant visually on a graphical platform. Performance analysis of the whole system as well as the individual units is possible using the tool. The software first of its kind in its domain and in the well-known Microsoft Excel environment is likely to be very useful in successful design, optimization and operation of an advanced hybrid treatment plant for removal of arsenic from contaminated groundwater.
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Affiliation(s)
- S Chakrabortty
- Environment and Membrane Technology Laboratory, Department of Chemical Engineering, National Institute of Technology Durgapur, Durgapur, 713209, India
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Watz H, Drollmann A, Sechaud R, Pal P, Hara H, Uziel-Fusi S, Winkle P. Glycopyrronium beeinträchtigt nicht das QT-Intervall bei gesunden Probanden: eine randomisierte, placebo- und positiv-kontrollierte, 3 Phasen-Crossover-Studie. Pneumologie 2014. [DOI: 10.1055/s-0034-1368049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Pal P, Kumar R, Srivastava N, Chaudhuri J. A Visual Basic simulation software tool for performance analysis of a membrane-based advanced water treatment plant. Environ Sci Pollut Res Int 2014; 21:1833-1849. [PMID: 23982824 DOI: 10.1007/s11356-013-2082-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2013] [Accepted: 08/16/2013] [Indexed: 06/02/2023]
Abstract
A Visual Basic simulation software (WATTPPA) has been developed to analyse the performance of an advanced wastewater treatment plant. This user-friendly and menu-driven software is based on the dynamic mathematical model for an industrial wastewater treatment scheme that integrates chemical, biological and membrane-based unit operations. The software-predicted results corroborate very well with the experimental findings as indicated in the overall correlation coefficient of the order of 0.99. The software permits pre-analysis and manipulation of input data, helps in optimization and exhibits performance of an integrated plant visually on a graphical platform. It allows quick performance analysis of the whole system as well as the individual units. The software first of its kind in its domain and in the well-known Microsoft Excel environment is likely to be very useful in successful design, optimization and operation of an advanced hybrid treatment plant for hazardous wastewater.
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Affiliation(s)
- P Pal
- Environment and Membrane Technology Laboratory, Chemical Engineering Department, National Institute of Technology, Durgapur, 713209, India.
| | - R Kumar
- Environment and Membrane Technology Laboratory, Chemical Engineering Department, National Institute of Technology, Durgapur, 713209, India
| | - N Srivastava
- Environment and Membrane Technology Laboratory, Chemical Engineering Department, National Institute of Technology, Durgapur, 713209, India
| | - J Chaudhuri
- Environment and Membrane Technology Laboratory, Chemical Engineering Department, National Institute of Technology, Durgapur, 713209, India
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