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Ashraf MA, Liu Z, Zhang D, Najafi M. DFT prediction of oxygen reduction reaction on B-SiNT catalyst in fuel cells. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2019.113814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Moghtaderi M, Ashraf MA, Teshnizi SH, Nabavizadeh H, Farjadian S, Fereidouni M. The level of allergens in dust samples collected from selected schools in Shiraz, Iran and its asthma-risk implications. Allergol Immunopathol (Madr) 2020; 48:90-94. [PMID: 31477397 DOI: 10.1016/j.aller.2019.05.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 05/05/2019] [Accepted: 05/10/2019] [Indexed: 01/21/2023]
Abstract
BACKGROUND Both home and school are important places where children are exposed to various indoor allergens. This study aimed to identify the profile of indoor allergens in schools and its impact on asthma development. METHODS A total of 104 classrooms from 52 schools were selected for dust collection during the fall of 2017. The levels of indoor allergens including dust mite (Der f1, Der p1), cat (Fel d1), cockroach (Bla g1) and mouse (Mus m1) were measured by enzyme linked immunosorbent assay (ELISA). The diagnosis of asthma was made in all students of the selected classes by the allergist. The collected data were analyzed using SPSS version 21.0. RESULTS Out of 2816 students in the selected classes, 180 students were involved with asthma. Students were mostly exposed to Bla g1 (83.1%), followed by Der f1 (51.5%), Mus m 1 (45.5%), Der p1 (8.9%) and Fel d1 (7.9%) in the dust collected from 101 classrooms. Although levels of all studied allergens in the settled dust of the classrooms were low, there was a relationship between Fel d1 in the classroom dust and development of asthma. CONCLUSION This study showed considerable levels of cockroach allergens in schools. Exposure to cat allergen in our schools played an important role in asthma development; further school-based investigations require evaluating the role of classroom allergen on asthma development.
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Ashraf MA, Li C, Zhang D, Fakhri A. Graphene oxides as support for the synthesis of nickel sulfide–indium oxide nanocomposites for photocatalytic, antibacterial and antioxidant performances. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5354] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Mojid MA, Hossain ABMZ, Ashraf MA. Artificial neural network model to predict transport parameters of reactive solutes from basic soil properties. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 255:113355. [PMID: 31668956 DOI: 10.1016/j.envpol.2019.113355] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Revised: 08/17/2019] [Accepted: 10/05/2019] [Indexed: 06/10/2023]
Abstract
Measurement of solute-transport parameters through soils for a wide range of solute- and soil-types is time-consuming, laborious, expensive and practically impossible. So, indirect methods for estimating the transport parameters by pedo-transfer functions are now advancing. This study developed and evaluated an Artificial Neural Network (ANN) model for estimating the transport velocity (V), dispersion coefficient (D) and retardation factor (R) of NaAsO2, Pb(NO3)2, Cd(NO3)2, C9H9N3O2 and CaCl2 from the basic soil properties. Breakthrough data of the solutes were measured in 14 agricultural soils of Bangladesh by time-domain reflectometry (TDR) in repacked soil columns under unsaturated steady-state water-flow conditions. The transport parameters of the chemicals were determined by analyzing the solute breakthrough data. Bulk density (γ), organic carbon (OC), clay (C) content, pH, median grain diameter (D50) and uniformity coefficient (Cu) of the soils were determined. An ANN model for V, D and R was developed by using data of eight soils, validated/tested with the data of five soils and verified with the data of one soil. Clay content and bulk density of the soils were the most sensitive input variables to the ANN model followed by other soil properties (OC, C, pH, D50 and Cu). The model reliably predicted V, D and R with relative root-mean-square error (RRMSE) of 0.028-0.363, mean error (ME) of - 0.00004 to 0.0005, bias error (BOE%) of 0-0.003 and modeling efficiency (EF) of >0.99. Thus, the ANN model can significantly enhance prediction of pollution transport through soils in terms of cost and effort.
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Ashraf MA, Liu Z, Peng W. Trisaminomethane–cobalt complex supported on Fe
3
O
4
magnetic nanoparticles as an efficient recoverable nanocatalyst for oxidation of sulfides and C–S coupling reactions. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5260] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Ashraf MA, Liu Z, Peng WX, Zhou L. Glycerol Cu(II) Complex Supported on Fe3O4 Magnetic Nanoparticles: A New and Highly Efficient Reusable Catalyst for the Formation of Aryl-Sulfur and Aryl-Oxygen Bonds. Catal Letters 2019. [DOI: 10.1007/s10562-019-02973-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Ashraf MA, Liu Z, Peng WX, Gao C. New Copper Complex on Fe3O4 Nanoparticles as a Highly Efficient Reusable Nanocatalyst for Synthesis of Polyhydroquinolines in Water. Catal Letters 2019. [DOI: 10.1007/s10562-019-02986-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Ashraf MA, Liu Z, Li C, Peng WX, Najafi M. Examination of potential of B-CNT (6, 0), Al-CNT (6, 0) and Ga-CNT (6, 0) as novel catalysts to oxygen reduction reaction: A DFT study. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111366] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Ashraf MA, Mohd Hanafiah M. Sustaining life on earth system through clean air, pure water, and fertile soil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:13679-13680. [PMID: 30350141 DOI: 10.1007/s11356-018-3528-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Accepted: 10/17/2018] [Indexed: 06/08/2023]
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Ashraf MA, Liu Z, Peng W, Parsaee Z. Design, preparation and evaluation of a high performance sensor for formaldehyde based on a novel hybride nonocomposite ZnWO 3/rGO. Anal Chim Acta 2019; 1051:120-128. [PMID: 30661608 DOI: 10.1016/j.aca.2018.11.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 10/22/2018] [Accepted: 11/07/2018] [Indexed: 10/27/2022]
Abstract
The ultrasound wave assisted synthesis of a novel ZnWO3/rGO hybrid nono composition (ZnWO3/rGO HNC) as a high performance sensor for formaldehyde (FA) has been reported. Different techniques of analysis such as XRD, FE-SEM, TGA, XPS, HRTEM and BET were applied for morphological and spectroscopic characterization of the ZnWO3/rGO HNC. The sensing evaluation of the constructed sensor showed high selectivity, sensitivity and a linear correlation between achieved responses and concentration of target gas (1-10 ppm) with R2 = 0.993 at temperature of 95 °C. The determination of FA was validated and performed using gas chromatography-mass spectrometry combined by solid phase micro-extraction after derivatization with O-(2,3,4,5,6-pentafluoro-benzyl)-hydroxylamine hydrochloride. Validation was carried out in terms of limit of detection linearity, precision, and recovery. The mechanistic evaluation of sensing behavior of the ZnWO3/rGO HNC was interpreted based on large specific surface area (SSA) to volume, mesoporous structure and the heterojunction between rGO and ZnWO3 at the interface between the rGO and ZnWO3.
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Zheng S, Du W, Zhao L, Zhang J, Li X, Ashraf MA. Experimental study on the influence of footstep motion on resuspension of particles in small box. JOURNAL OF INTELLIGENT & FUZZY SYSTEMS 2018. [DOI: 10.3233/jifs-169731] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Khan J, Ilyas S, Akram B, Ahmad K, Hafeez M, Siddiq M, Ashraf MA. Zno/NiO coated multi-walled carbon nanotubes for textile dyes degradation. ARAB J CHEM 2018. [DOI: 10.1016/j.arabjc.2017.12.020] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Khan J, Siddiq M, Akram B, Ashraf MA. In-situ synthesis of CuO nanoparticles in P(NIPAM-co-AAA) microgel, structural characterization, catalytic and biological applications. ARAB J CHEM 2018. [DOI: 10.1016/j.arabjc.2017.12.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Abbasi M, Rafique U, Murtaza G, Ashraf MA. Synthesis, characterisation and photocatalytic performance of ZnS coupled Ag2S nanoparticles: A remediation model for environmental pollutants. ARAB J CHEM 2018. [DOI: 10.1016/j.arabjc.2017.12.017] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Ashraf MA, Peng W, Zare Y, Rhee KY. Effects of Size and Aggregation/Agglomeration of Nanoparticles on the Interfacial/Interphase Properties and Tensile Strength of Polymer Nanocomposites. NANOSCALE RESEARCH LETTERS 2018; 13:214. [PMID: 30019092 PMCID: PMC6049851 DOI: 10.1186/s11671-018-2624-0] [Citation(s) in RCA: 152] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 06/28/2018] [Indexed: 05/25/2023]
Abstract
In this study, several simple equations are suggested to investigate the effects of size and density on the number, surface area, stiffening efficiency, and specific surface area of nanoparticles in polymer nanocomposites. In addition, the roles of nanoparticle size and interphase thickness in the interfacial/interphase properties and tensile strength of nanocomposites are explained by various equations. The aggregates/agglomerates of nanoparticles are also assumed as large particles in nanocomposites, and their influences on the nanoparticle characteristics, interface/interphase properties, and tensile strength are discussed. The small size advantageously affects the number, surface area, stiffening efficiency, and specific surface area of nanoparticles. Only 2 g of isolated and well-dispersed nanoparticles with radius of 10 nm (R = 10 nm) and density of 2 g/cm3 produce the significant interfacial area of 250 m2 with polymer matrix. Moreover, only a thick interphase cannot produce high interfacial/interphase parameters and significant mechanical properties in nanocomposites because the filler size and aggregates/agglomerates also control these terms. It is found that a thick interphase (t = 25 nm) surrounding the big nanoparticles (R = 50 nm) only improves the B interphase parameter to about 4, while B = 13 is obtained by the smallest nanoparticles and the thickest interphase.
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Yang J, Wang Q, Liang S, Guo J, Ashraf MA. Non-seismic Geophysical Prospecting Model of Beiya Gold Mine in Western Yunnan Province. SAINS MALAYS 2017. [DOI: 10.17576/jsm-2017-4611-16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Wang J, Gu T, Wang J, Xu Y, Chen P, Ashraf MA. Environmental Geological Features of the Red Clay Surrounding Rock Deformation under the Influence of Rock-Fracture Water. SAINS MALAYS 2017. [DOI: 10.17576/jsm-2017-4611-05] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Mana SCA, Fatt NT, Ashraf MA. The fate and transport of arsenic species in the aquatic ecosystem: a case study on Bestari Jaya, Peninsular Malaysia. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:22799-22807. [PMID: 27987120 DOI: 10.1007/s11356-016-8195-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 11/30/2016] [Indexed: 06/06/2023]
Abstract
The field of arsenic pollution research has grown rapidly in recent years. Arsenic constitutes a broad range of elements from the Earth's crust and is released into the environment from both anthropogenic and natural sources due to its relative mobility under different redox conditions. The toxicity of arsenic is described in its inorganic form, as inorganic arsenic compounds can leach into different environments. Sampling was carried out in the Bestari Jaya catchment while using a land use map to locate the site, and experiments were conducted via sequential extraction and inductively coupled plasma optical emission spectroscopy to quantify proportions of arsenic in the sediment samples. The results show that metals in sediments of nonresidual fractions, which are more likely to be likely released into aquatic environments, are more plentiful than the residual sediment fractions. These findings support the mobility of heavy metals and especially arsenic through sediment layers, which can facilitate remediation in environments heavily polluted with heavy metals.
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Khan AM, Bakar NKA, Bakar AFA, Ashraf MA. Chemical speciation and bioavailability of rare earth elements (REEs) in the ecosystem: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:22764-22789. [PMID: 27722986 DOI: 10.1007/s11356-016-7427-1] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Accepted: 08/04/2016] [Indexed: 06/06/2023]
Abstract
Rare earths (RE), chemically uniform group of elements due to similar physicochemical behavior, are termed as lanthanides. Natural occurrence depends on the geological circumstances and has been of long interest for geologist as tools for further scientific research into the region of ores, rocks, and oceanic water. The review paper mainly focuses to provide scientific literature about rare earth elements (REEs) with potential environmental and health effects in understanding the research. This is the initial review of RE speciation and bioavailability with current initiative toward development needs and research perceptive. In this paper, we have also discussed mineralogy, extraction, geochemistry, analytical methods of rare earth elements. In this study, REEs with their transformation and vertical distribution in different environments such as fresh and seawater, sediments, soil, weathering, transport, and solubility have been reported with most recent literature along key methods of findings. Speciation and bioavailability have been discussed in detail with special emphasis on soil, plant, and aquatic ecosystems and their impacts on the environment. This review shows that REE gained more importance in last few years due to their detrimental effects on living organisms, so their speciation, bioavailability, and composition are much more important to evaluate their health risks and are discussed thoroughly as well.
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Ashraf MA, Hanfiah MM. Recent advances in assessment on clear water, soil and air. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:22753-22754. [PMID: 29149440 DOI: 10.1007/s11356-017-9267-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 05/11/2017] [Indexed: 06/07/2023]
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Noor MJ, Sultana S, Fatima S, Ahmad M, Zafar M, Sarfraz M, Balkhyour MA, Safi SZ, Ashraf MA. Retraction Note to: Estimation of Anticipated Performance Index and Air Pollution Tolerance Index and of vegetation around the marble industrial areas of Potwar region: bioindicators of plant pollution response. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2017; 39:705. [PMID: 26932557 DOI: 10.1007/s10653-016-9812-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Ashraf MA, Khan AM, Ahmad M, Akib S, Balkhair KS, Bakar NKA. Retraction Note to: Release, deposition and elimination of radiocesium ( 137Cs) in the terrestrial environment. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2017; 39:703. [PMID: 26932556 DOI: 10.1007/s10653-016-9811-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Gao J, Yue LL, Jiang X, Ni L, Ashraf MA, Zhou Y, Li K, Junhua X. Phylogeographic Patterns of Microtus fortis (Arvicolinae: Rodentia) in China Based on Mitochondrial DNA Sequences. PAK J ZOOL 2017. [DOI: 10.17582/journal.pjz/2017.49.4.1185.1195] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Wang Y, Cheng Z, Tang M, Haixia Z, Yuan X, Ashraf MA, Mao S, Wang J. Expression of Ldh-c (Sperm-Specific Lactate Dehydrogenase Gene) in Skeletal Muscle of Plateau Pika, Ochotona curzoniae, and its Effect on Anaerobic Glycolysis. PAK J ZOOL 2017. [DOI: 10.17582/journal.pjz/2017.49.3.905.913] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Cai J, Ashraf MA, Luo L, Tang H. Effects of Codonopsis pilosula water extract on MicroRNA expression profile in D-galactose-induced senile mice. PAKISTAN JOURNAL OF PHARMACEUTICAL SCIENCES 2017; 30:1179-1183. [PMID: 28671103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
This paper aims to observe and analyze effects of Codonopsis pilosula water extract on micro RNA (miRNA) expression profile in liver tissue of senile mice. The 110 Konminmice were randomly divided into five groups, including D-galactose-induced senile model group, normal control group, and low, middle and high dose intervention groups. Continuous modeling lasted 40 days. General symptoms and changes of body mass of the model mice were monitored and observed. The levels of serum glutamic pyruvic transaminase (ALT) and alkaline phosphatase (ALP) of mice were compared, and miRNA of differential expression during aging of D-galactose-induction and high-dose Codonopsis pilosula intervention was analyzed. The serum ALT and ALP levels in the aging model group were significantly higher than those in the normal control group (P<0.05). The serum ALT and ALP levels of Codonopsis pilosula intervention group were lower than those of aging model group, and decrease in ALP value of high dose intervention group was higher (P<0.05). The expression profile of miRNA in the aging model group was significantly different from that in normal control group and high-dose Codonopsis pilosula intervention group, and miRNA expression profile in high-dose Codonopsis pilosula intervention group was clustered with that in the normal control group. The differentially expressed miRNAs of D-galactose-induced senescence and Codonopsis pilosula anti-aging usually belong to 7 miRNA clusters. The target gene function of the differentially expressed miRNAs during senescence process was enriched in 29 signal pathways. There were 67 regulatory signal pathways in differentially expressed miRNA target genes during Codonopsis pilosula intervention. The effect of miRNA targeting may play an important role during D-galactose-induced senescence and Codonopsis pilosula anti-aging period.
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