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Rezaei R, Sharifnia H, Nazari R, Saatsaz S. The efficacy of massage as a nightly bedtime routine on infant sleep condition and mother sleep quality: A randomized controlled trial. J Neonatal Perinatal Med 2023:NPM210964. [PMID: 37248915 DOI: 10.3233/npm-210964] [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] [Indexed: 05/31/2023]
Abstract
BACKGROUND AND PURPOSE Infants' sleep disorders and parents' insufficient sleep are common problems in the infant care. The current study was conducted to assess the effectiveness of infant massage on infants' night-time sleep condition and mothers' sleep quality. PROCEDURES 140 infants were randomly put into two different groups, experimental group with fifteen-minute bedtime messages for two weeks and the control group with normal infant routine care. The Brief Infant Sleep Questionnaire, a personal information submission form, and Pittsburgh Sleep Quality Index for the mothers were the tools used to gather data in this study. RESULTS Infants in experimental group showed meaningful differences in variables such as, sleep latency (P < 0001, eta = 0.099), number of night waking (P = 0.03, eta = 0.027) and longest continuous sleep period (P = 0.03, eta = 0.026). As for other variables no meaningful differences were observed. There wasn't meaningful difference in the mother's overall night-time sleep quality between the two groups (P = 0.184, eta = 0.012) except for the duration of the mother's night-time sleep (P = 0.028, eta = 0.026) and the reduction of maternal sleep disorder (P = 0.020 eta = 0.029). CONCLUSION The findings indicated that infants' bedtime massages would improve some of the sleep markers of mothers and infants, and therefore, can be suggested as a practical, harmless, and cost-free method to improve sleep.
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Affiliation(s)
- R Rezaei
- Faculty of Nursing and Midwifery Department of Mazandaran University of Medical Sciences, Sari, Iran
| | - H Sharifnia
- Faculty of Nursing and Midwifery Department of Mazandaran University of Medical Sciences, Sari, Iran
| | - R Nazari
- Faculty of Nursing and Midwifery Department of Mazandaran University of Medical Sciences, Sari, Iran
| | - S Saatsaz
- Faculty of Nursing and Midwifery Department of Mazandaran University of Medical Sciences, Sari, Iran
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Nazari R, Moradi Koosha F, Rezaie S, Akbari N, Qolizadeh A, Sabzi Z. Experiences of the mothers of infants hospitalized in the neonatal intensive care unit (NICU). J Neonatal Perinatal Med 2020; 13:571-579. [PMID: 32224533 DOI: 10.3233/npm-190205] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND The mother-newborn relationship is more important in neonates hospitalized in the NICU than in healthy neonates. This study was conducted to explore the experiences of the mothers of infants hospitalized in the NICU. MATERIALS AND METHODS This qualitative study was done in 2016 by adopting a conventional content analysis approach. Thirty-five mothers in the NICUs, Imam Hossein Hospital and Fatemieh Hospital were selected. Their experiences were assessed using in-depth individual semi-structured interviews. Sampling was purposive and was continued until reaching data saturation. RESULTS Two hundred and nine primary codes were extracted. After removing duplicates and overlaps, 95 primary codes were categorized in 8 subcategories, 2 accessory categories and 1 main category based on their appropriateness, agreement, and similarity. The accessory categories of "mothers' worries" and "mothers' hopes" were merged into a more general, abstract category named "dual feelings about the baby". CONCLUSIONS The nurses' awareness of the mothers' experiences can help design interventions to promote the quality of care for mothers and infants in the critical period of the NICU admission.
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Affiliation(s)
- R Nazari
- Department of Pediatrics, Children's Medical Center, Medical Sciences/University of Tehran, Tehran, IR Iran
| | - F Moradi Koosha
- Msc. School of Nursing and Midwifery, Gonabad University of Medical Sciences, Gonabad, IR Iran
| | - S Rezaie
- Department of Nursing, School of Nursing and Midwifery, Shahroud University of Medical Sciences, Shahroud, IR Iran
| | - N Akbari
- Florence Nightingale Faculty of Nursing, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - A Qolizadeh
- Department of Nursing, School of Nursing and Midwifery, Qazvin University of Medical Sciences, Qazvin, IR Iran
| | - Z Sabzi
- Department of Nursing, School of Nursing and Midwifery, Nursing Research Center, Golestan University of Medical Sciences, Gorgan, IR Iran
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Zhou W, Rajic L, Meng X, Nazari R, Zhao Y, Wang Y, Gao J, Qin Y, Alshawabkeh AN. Efficient H 2O 2 electrogeneration at graphite felt modified via electrode polarity reversal: Utilization for organic pollutants degradation. Chem Eng J 2019; 364:428-439. [PMID: 32581640 PMCID: PMC7314056 DOI: 10.1016/j.cej.2019.01.175] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Electrochemical synthesis of H2O2 offers a great potential for water treatment. However, a significant challenge is the development of efficient cathode materials for the process. Herein, we implement a practical electrochemical cathode modification to support efficient H2O2 electrogeneration via the reduction of dissolved anodic O2. Graphite felt (GF) is in situ anodically modified by electrode polarity reversal technique in an acid-free, low-conductivity electrolyte. The modified GF exhibits a significantly higher activity towards O2 reduction. Up to 183.3% higher H2O2 yield is obtained by the anodized GF due to the increased concentrations of oxygen-containing groups and the hydrophilicity of the surface, which facilitates electron and mass transfer between GF and the electrolyte. Another significant finding is the ability to produce H2O2 at a high yield under neutral pH and low current intensity by the modified GF (35% of the charge need to produce the same amount by unmodified GF). Long-term stability testing of the modified GF showed a decay in the electrode's activity for H2O2 production after 30 consecutive applications. However, the electrode regained its optimal activity for H2O2 production after a secondary modification by electrode polarity reversal. Finally, in situ electrochemically modified GF is more effective for removal of reactive blue 19 (RB19, 20 mg/L) and ibuprofen (IBP, 10 mg/L) by the electro-Fenton process. The modified GF removed 62.7% of RB19 compared to only 28.1% by the unmodified GF in batch reactors after 50 min. Similarly, 75.3% IBP is removed by the modified GF compared to 57.6% by the unmodified GF in a flow-through reactor after 100 min.
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Affiliation(s)
- Wei Zhou
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
- Department of Civil and Environmental Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Ljiljana Rajic
- Pioneer Valley Coral and Natural Science Institute, 1 Mill Valley Road, Hadley, MA 01035, USA
| | - Xiaoxiao Meng
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Roya Nazari
- Department of Civil and Environmental Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Yuwei Zhao
- Department of Civil and Environmental Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Yan Wang
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Jihui Gao
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
- Corresponding author: Prof. Jihui Gao, School of Energy Science and Engineering, Harbin Institute of Technology, 92, Dazhi Street, Nangang District, Harbin 150001, China, ; Akram N. Alshawabkeh, PhD, PE, Fellow ASCE, George A. Snell Professor of Engineering, Department of Civil and Environmental Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA 02115,
| | - Yukun Qin
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Akram N. Alshawabkeh
- Department of Civil and Environmental Engineering, Northeastern University, Boston, Massachusetts 02115, United States
- Corresponding author: Prof. Jihui Gao, School of Energy Science and Engineering, Harbin Institute of Technology, 92, Dazhi Street, Nangang District, Harbin 150001, China, ; Akram N. Alshawabkeh, PhD, PE, Fellow ASCE, George A. Snell Professor of Engineering, Department of Civil and Environmental Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA 02115,
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Nazari R, Rajić L, Ciblak A, Hernández S, Mousa IE, Zhou W, Bhattacharyya D, Alshawabkeh AN. Immobilized palladium-catalyzed electro-Fenton's degradation of chlorobenzene in groundwater. Chemosphere 2019; 216:556-563. [PMID: 30390586 PMCID: PMC6293191 DOI: 10.1016/j.chemosphere.2018.10.143] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 10/17/2018] [Accepted: 10/19/2018] [Indexed: 05/23/2023]
Abstract
This study investigates the effect of palladium (Pd) form on the electrochemical degradation of chlorobenzene in groundwater by palladium-catalyzed electro-Fenton (EF) reaction. In batch and flow-through column reactors, EF was initiated via in-situ electrochemical formation of hydrogen peroxide (H2O2) supported by Pd on alumina powder or by palladized polyacrylic acid (PAA) in a polyvinylidene fluoride (PVDF) membrane (Pd-PVDF/PAA). In a mixed batch reactor containing 10 mg L-1 Fe2+, 2 g L-1 of catalyst in powder form (1% Pd, 20 mg L-1 of Pd) and an initial pH of 3, chlorobenzene was degraded under 120 mA current following a first-order decay rate showing 96% removal within 60 min. Under the same conditions, a rotating Pd-PVDF/PAA disk produced 88% of chlorobenzene degradation. In the column experiment with automatic pH adjustment, 71% of chlorobenzene was removed within 120 min with 10 mg L-1 Fe2+, and 2 g L-1 catalyst in pellet form (0.5% Pd, 10 mg L-1 of Pd) under 60 mA. The EF reaction can be achieved under flow, without external pH adjustment and H2O2 addition, and can be applied for in-situ groundwater treatment. Furthermore, the rotating PVDF-PAA membrane with immobilized Pd-catalyst showed an effective and low maintenance option for employing Pd catalyst for water treatment.
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Affiliation(s)
- Roya Nazari
- Department of Civil and Environmental Engineering, Northeastern University, 400 Snell Engineering, 360 Huntington Avenue, Boston, MA, 02115, USA
| | - Ljiljana Rajić
- Pioneer Valley Coral and Natural Science Institute, 1 Mill Valley Road, Hadley, MA, 01035, USA
| | - Ali Ciblak
- Geosyntec Consultants, 1255 Roberts Boulevard, suite 200, Kennesaw, GA, 30144, USA
| | - Sebastián Hernández
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY, 40506, USA
| | - Ibrahim E Mousa
- Department of Environmental Biotechnology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Menoufia, 22857, Egypt
| | - Wei Zhou
- Department of Civil and Environmental Engineering, Northeastern University, 400 Snell Engineering, 360 Huntington Avenue, Boston, MA, 02115, USA; Department of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, PR China
| | - Dibakar Bhattacharyya
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY, 40506, USA
| | - Akram N Alshawabkeh
- Department of Civil and Environmental Engineering, Northeastern University, 400 Snell Engineering, 360 Huntington Avenue, Boston, MA, 02115, USA.
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Nazari R, Golchoubian H, Bruno G. Mononuclear copper(II) complexes containing chelating ligand of 2-methyl-N-(pyridine-2-yl-methyl)propane-2-amine as chromotropic probes. J IRAN CHEM SOC 2019. [DOI: 10.1007/s13738-018-01577-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Nazari R, Golchoubian H, Bruno G. Chromotropism studies on copper(II) compounds. Part II. Dinuclear copper(II) complexes with triply-bridged hydroxo, acetate, and halo ligands. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1506113] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Roya Nazari
- Department of Chemistry, University of Mazandaran , Babol-sar , Iran
| | - Hamid Golchoubian
- Department of Chemistry, University of Mazandaran , Babol-sar , Iran
| | - Giuseppe Bruno
- Dipartimento di Chimica Inorganica, Università di Messina, Messina , Italy
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Abstract
Electro-Fenton (EF) and ultrasound radiation (US) have been of interest for the removal of chlorinated compounds from water. This study evaluates the effects of different parameters on sono-electro-Fenton (SEF) for degradation of 4-chlorophenol (4-CP) in an aqueous solution. This study uses pulsing US waves along with Pd-catalyzed EF to degrade contaminants in water while maintaining temperature. The usage of pulsing US waves along with Pd catalyzed EF to remove contaminants while maintaining temperature has not been reported previously. SEF ability to degrade 4-CP was compared with the performance of each process (EF and sonolysis) alone. Initial pH, current density, background electrolyte, Fe2+ concentration, Pd/Al2O3 catalyst concentration, US waves, and sonifier amplitude were optimized in a two electrode (Ti/mixed metal oxide or Ti/MMO) batch system. The degradation of 4-CP increased from 1.85% by US to 83% by EF to nearly >99.9% by coupled SEF. With US radiation under 70% amplitude and 1:10 ON/OFF ratio, the removal rate of 4-CP increased to 98% compared to 62% under EF alone within the first 120 min in the presence of 80 mg L-1 Fe2+, 16.94 mA cm-2 of current density, 1 g L-1 Pd/Al2O3 catalyst (10 mg Pd), and initial pH of 3. However, the degradation rate decreased after 120 min of treatment, and complete 4-CP removal was observed after 300 minutes. The sonolysis impacted the 4-CP removal under coupled SEF, mostly due to the contribution of mass transfer (micromixing), while radical formation was found to be absent under the conditions tested (20kHz). The pulsed US was found to increase the temperature by only 8.7°C, which was found not to impact the 4-CP volatilization or degradation. These results imply that low-level US frequency through pulses is a practical and efficient approach to support electro-Fenton reaction, improving reaction rates without the need for electrolyte cooling.
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Affiliation(s)
- Roya Nazari
- Department of Civil and Environmental Engineering, Northeastern University, 400 Snell Engineering, 360 Huntington Avenue, Boston, MA 02115, USA
| | - Ljiljana Rajić
- Department of Civil and Environmental Engineering, Northeastern University, 400 Snell Engineering, 360 Huntington Avenue, Boston, MA 02115, USA
| | - Yunfei Xue
- Department of Civil and Environmental Engineering, Northeastern University, 400 Snell Engineering, 360 Huntington Avenue, Boston, MA 02115, USA.,State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, P.R. China
| | - Wei Zhou
- Department of Civil and Environmental Engineering, Northeastern University, 400 Snell Engineering, 360 Huntington Avenue, Boston, MA 02115, USA.,Department of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, P.R. China
| | - Akram N Alshawabkeh
- Department of Civil and Environmental Engineering, Northeastern University, 400 Snell Engineering, 360 Huntington Avenue, Boston, MA 02115, USA
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Taqieddin A, Nazari R, Rajic L, Alshawabkeh A. Review-Physicochemical hydrodynamics of gas bubbles in two phase electrochemical systems. J Electrochem Soc 2017; 164:E448-E459. [PMID: 29731515 PMCID: PMC5935447 DOI: 10.1149/2.1161713jes] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Electrochemical systems suffer from poor management of evolving gas bubbles. Improved understanding of bubbles behavior helps to reduce overpotential, save energy and enhance the mass transfer during chemical reactions. This work investigates and reviews the gas bubbles hydrodynamics, behavior, and management in electrochemical cells. Although the rate of bubble growth over the electrode surface is well understood, there is no reliable prediction of bubbles break-off diameter from the electrode surface because of the complexity of bubbles motion near the electrode surface. Particle Image Velocimetry (PIV) and Laser Doppler Anemometry (LDA) are the most common experimental techniques to measure bubble dynamics. Although the PIV is faster than LDA, both techniques are considered expensive and time-consuming. This encourages adapting Computational Fluid Dynamics (CFD) methods as an alternative to study bubbles behavior. However, further development of CFD methods is required to include coalescence and break-up of bubbles for better understanding and accuracy. The disadvantages of CFD methods can be overcome by using hybrid methods. The behavior of bubbles in electrochemical systems is still a complex challenging topic which requires a better understanding of the gas bubbles hydrodynamics and their interactions with the electrode surface and bulk liquid, as well as between the bubbles itself.
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Affiliation(s)
- Amir Taqieddin
- Department of Mechanical and Industrial Engineering, Northeastern University, Boston, MA 02115, USA
| | - Roya Nazari
- Department of Civil and Environmental Engineering, Northeastern University, Boston, MA 02115, USA
| | - Ljiljana Rajic
- Department of Civil and Environmental Engineering, Northeastern University, Boston, MA 02115, USA
| | - Akram Alshawabkeh
- Department of Civil and Environmental Engineering, Northeastern University, Boston, MA 02115, USA
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Rajic L, Nazari R, Fallahpour N, Alshawabkeh AN. Electrochemical degradation of trichloroethylene in aqueous solution by bipolar graphite electrodes. J Environ Chem Eng 2016; 4:197-202. [PMID: 26955517 PMCID: PMC4778262 DOI: 10.1016/j.jece.2015.10.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
In this study, we tested the use of the bipolar electrodes to enhance electrochemical degradation of trichloroethylene (TCE) in an undivided, flow-through electrochemical reactor. The bipolar electrode forms when an electrically conductive material polarizes between feeder electrodes that are connected to a direct current source and, therefore, creates an additional anode/cathode pair in the system. We hypothesize that bipolar electrodes will generate additional oxidation/reduction zones to enhance TCE degradation. The graphite cathode followed by graphite anode sequence were operated without a bipolar electrode as well as with one and two bipolar graphite electrodes. The system without bipolar electrodes degraded 29% of TCE while the system with one and two bipolar electrodes degraded 38% and 66% of TCE, respectively. It was found that the removal mechanism for TCE in bipolar mode includes hydrodechlorination at the feeder cathode, and oxidation through reaction with peroxide. The results show that the bipolar electrodes presence enhance TCE removal efficiency and rate and imply that they can be used to improve electrochemical treatment of contaminated groundwater.
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Nazari R, Godarzi H, Rahimi Baghi F, Moeinrad M. Enterotoxin gene profiles among Staphylococcus aureus isolated from raw milk. Iran J Vet Res 2014; 15:409-12. [PMID: 27175141 PMCID: PMC4789223] [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] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 05/25/2014] [Accepted: 06/09/2014] [Indexed: 06/05/2023]
Abstract
Milk is considered a nutritious food because it contains several important nutrients including proteins and vitamins. Conversely, it can be a vehicle for several pathogenic bacteria such as Staphylococcus aureus. This study aimed to analyze the frequency of genes encoding the nine Staphylococcal enterotoxins (SEs) and enterotoxin gene profiles in S. aureus isolates derived from raw bovine milk. A total of 52 S. aureus isolates were obtained from 246 milk samples of 246 dairy cows from eight different farms in Qom, Iran. On the basis of cultural and biochemical properties as well as by amplification of the 23S rRNA specific to S. aureus, all isolates could be identified as S. aureus. Of the 52 isolates studied, 80.7% were positive for one or more genes encoding the enterotoxins, and 12 different genotypes were identified. The gene encoding for enterotoxin A (Sea) was the most frequent (16 isolates, 30.7%), followed by Seb (14 isolates, 26.9%) and Sed (8 isolates, 15.37%). Among the genes encoding the other enterotoxins, Seg and Seh were the most frequently observed (8 isolates each, 15.38%), followed by Sej (6 isolates, 11.5%) and Sei (1 isolates, 3.84%). With the recent identification of new SEs, the frequency of enterotoxigenic strains has increased, suggesting that the pathogenic potential of Staphylococci may be higher than previously thought. These results of enterotoxin genes positivity of milk-derived Staphylococci constitute a potential risk for consumers' health.
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Affiliation(s)
- R Nazari
- Department of Microbiology, College of Science, Qom Branch, Islamic Azad University, Qom, Iran
| | - H Godarzi
- Department of Microbiology, College of Science, Qom Branch, Islamic Azad University, Qom, Iran
| | - F Rahimi Baghi
- Department of Microbiology, College of Science, Qom Branch, Islamic Azad University, Qom, Iran
| | - M Moeinrad
- Department of Microbiology, College of Science, Zanjan Branch, Islamic Azad University, Zanjan, Iran
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Changizi V, Nazari R, Naseri S, Zareh MZ. Measuring Radionuclides Concentration in Rice Field Soils using Gamma Spectroscopy in Northern Iran. Iran J Public Health 2012; 41:94-9. [PMID: 23113140 PMCID: PMC3481669] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Accepted: 11/20/2011] [Indexed: 11/03/2022]
Abstract
BACKGROUND A few elements of soil are radioactive. Soil can transfer radionuclide into plants feeding human. Sometimes their levels are as high as to be concern of human healthy. Rice has an important share for Iranian foods especially in north of Iran. Therefore we decided to obtain radionuclides concentration emitting γ rays in Lahijan City (Northern Iran) rice fields using γ spectroscopy. METHODS Twenty eight samples from rice field's soils and 12 samples from superficial soils were collected at a square of 10*10 m2 to get 2kg weight. To make dry samples were put into oven at 105°C for 24h. Then they were milled and 950 gr of each sample was transferred to Marinelli container with 1000(cc) volume, sealed and left for 40 days to get secular equilibrium. After measuring Ph, Electric conductivity and organic carbon, γ spectroscopy was done to get sample gamma spectrum at 2000-6000 sec using HpGe detector. RESULTS It was found (226)Ra activity in rice fields of 29.273±0.72 Bqkg-1 and city soil of 31.02±1.1 Bqkg-1 and also 232Th activity of 37.47±1.12 Bqkg-1 for rice fields' soils and 40.47±1.68 Bqkg-1 for city soil were in standard mode. CONCLUSION (40)K activities mean value according to UNSCEAR; 2000 was found a little greater than standard. A little value of (137)Cs was found in Lahijan rice fields and city soils that could be as a result of Chernobyl accident. In except of 137Cs, for three other under studied city soil elements, activities were greater than that of rice fields.
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Affiliation(s)
- V Changizi
- Dept. of Technology of Radiology and Radiotherapy, School of Allied Medical Sciences, Tehran University of Medical Sciences, Tehran, Iran
| | - R Nazari
- Science and Research Campus, Azad University, Tehran, Iran
| | - S Naseri
- Applied Physics Institute, University of Tehran, Tehran, Iran
| | - MZ Zareh
- Dept. of Physics, University of Isfahan, Isfahan, Iran
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de Vos G, Milush JM, Aaron J, Pichardo Y, York VA, Nazari R, Rosenstreich D, Nixon DF, Wiznia A. Peripheral CD8+ T-cell levels are decreased in atopic wheezing children aged less than 4 years. J Investig Allergol Clin Immunol 2012; 22:442-444. [PMID: 23101192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Affiliation(s)
- G de Vos
- Division of Allergy and Immunology, Albert Einstein College of Medicine, Jacobi Medical Center, Bronx, New York 10461, USA.
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de Vos G, Milush J, Aaron J, Pichardo Y, Nazari R, Chin M, Serebrisky D, Rosenstreich D, Nixon D, Wiznia A. A Decrease of CD3+CD8+ T-cells is Significantly Associated with Atopy, Wheezing and Increased IgE Levels in Young Children. J Allergy Clin Immunol 2011. [DOI: 10.1016/j.jaci.2010.12.1030] [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: 11/30/2022]
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Hassani ARS, Ordouzadeh N, Ghaemi A, Amirmozafari N, Hamdi K, Nazari R. In vitro inhibition of Helicobacter pylori urease with non and semi fermented Camellia sinensis. Indian J Med Microbiol 2009; 27:30-34. [PMID: 19172056] [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: 05/27/2023]
Abstract
PURPOSE Helicobacter pylori is the etiological agent in duodenal and peptic ulcers. The growing problem of antibiotic resistance by the organism demands the search for novel compounds, especially from natural sources. This study was conducted to evaluate the effect of Camellia sinensis extracts on the urease enzyme that is a major colonization factor for H. pylori. METHODS Minimum inhibitory concentrations of nonfermented and semifermented C. sinensis methanol: water extracts were assessed by broth dilution method. Examination of the urease function was performed by Mc Laren method, and urease production was detected on 12% SDS polyacrylamide gel electrophoresis from whole cell and membrane bound proteins. RESULTS Both extracts had inhibitory effects against H. pylori and urease production. At a concentration of 2.5 mg/ml of nonfermented extract and 3.5 mg/ml of semifermented extract the production of Ure A and Ure B subunits of the urease enzyme were inhibited completely. A concentration of 4 mg/ml of nonfermented and 5.5 mg/ml of semifermented extract were bactericidal for H. pylori. CONCLUSIONS C. sinensis extracts, especially the nonfermented, could reduce H. pylori population and inhibit urease production at lower concentrations. The superior effect of nonfermented extract is due to its rich polyphenolic compounds and catechin contents.
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Affiliation(s)
- A R Shoae Hassani
- Microbiology Department, Science and Research Branch of IAU, Tehran, Iran
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Hassani ARS, Ordouzadeh N, Ghaemi A, Amirmozafari N, Hamdi K, Nazari R. IN VITRO INHIBITION OF HELICOBACTER PYLORI UREASE WITH NON AND SEMI FERMENTED CAMELLIA SINENSIS. Indian J Med Microbiol 2009. [DOI: 10.1016/s0255-0857(21)01749-7] [Citation(s) in RCA: 14] [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: 12/15/2022]
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