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https://www.readbyqxmd.com/read/28345927/stable-superwetting-meshes-for-on-demand-separation-of-immiscible-oil-water-mixtures-and-emulsions
#1
Mingming Liu, Yuanyuan Hou, Jing Li, Zhiguang Guo
Oil-water separation is of great importance for the treatment of oily wastewater, including immiscible light/heavy oil-water mixtures, oil-in-water or water-in-oil emulsions. Recently, interfacial materials (especially filtration membranes) with special wettability have been broadly developed to solve the environmental problems by virtue of their advantages in energy saving, high flux and good selectivity. However, the given wetting property (superhydrophilicity or superhydrophobicity) and pore size and poor stability of filtration membranes limit their widespread applications, which is far from meeting a wide variety of oil polluted water...
March 27, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28345145/air-pollution-and-short-term-clinical-outcomes-of-patients-with-acute-myocardial-infarction
#2
Min Woo Lee, Byoung Geol Choi, Suhng Wook Kim, Seung-Woon Rha, Min Suk Shim, Dae Jin Kim, Hong Seog Seo, Dong Joo Oh, Myung Ho Jeong
1.Ambient air pollution is well-known to be a serious risk factor for cardiovascular diseases, stroke, and death. However, the association between air pollutants (AP) exposure and short-term clinical outcomes in acute myocardial infarction (AMI) patients (pts) is not well elucidated yet. 2.In the present study, 37,880 AMI pts were enrolled finally from October 2005 to December 2013 in a nationwide large-scale, prospective, multicenter Korea AMI registry (KAMIR registry; http://www.kamir.or.kr). We obtained data on AP (e...
March 27, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28343738/short-term-association-between-road-traffic-noise-and-healthcare-demand-generated-by-parkinson-s-disease-in-madrid-spain
#3
Julio Díaz, Pablo Martínez-Martín, Carmen Rodríguez-Blázquez, Blanca Vázquez, Maria João Forjaz, Cristina Ortiz, Rocío Carmona, Cristina Linares
OBJECTIVE: To analyse whether there is a short-term association between road traffic noise in the city of Madrid and Parkinson's disease (PD)-related demand for healthcare. METHODS: Time-series analysis (2008-2009) using variables of analysis linked to emergency and daily PD-related demand for healthcare (ICD-10: G20-G21), namely, PD-hospital admissions (HAs), PD-outpatient visits (OVs) and PD-emergency medical calls in Madrid. The noise pollution measurements used were Leqd, equivalent sound level for the daytime hours (from 8 a...
March 23, 2017: Gaceta Sanitaria
https://www.readbyqxmd.com/read/28343715/occurrence-profiles-and-toxic-equivalents-of-chlorinated-and-brominated-polycyclic-aromatic-hydrocarbons-in-e-waste-open-burning-soils
#4
Chiya Nishimura, Yuichi Horii, Shuhei Tanaka, Kwadwo Ansong Asante, Florencio Ballesteros, Pham Hung Viet, Takaaki Itai, Hidetaka Takigami, Shinsuke Tanabe, Takashi Fujimori
We conducted this study to assess the occurrence, profiles, and toxicity of chlorinated polycyclic aromatic hydrocarbons (Cl-PAHs) and brominated polycyclic aromatic hydrocarbons (Br-PAHs) in e-waste open burning soils (EOBS). In this study, concentrations of 15 PAHs, 26 Cl-PAHs and 14 Br-PAHs were analyzed in EOBS samples. We found that e-waste open burning is an important emission source of Cl-PAHs and Br-PAHs as well as PAHs. Concentrations of total Cl-PAHs and Br-PAHs in e-waste open burning soil samples ranged from 21 to 2800 ng/g and from 5...
March 23, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28342412/bacterial-community-responses-during-a-possible-co2-leaking-from-sub-seabed-storage-in-marine-polluted-sediments
#5
Ana R Borrero-Santiago, T Ángel DelValls, M Inmaculada Riba
Carbon capture and storage (CCS) is a viable option to reduce high concentrations of CO2 and mitigate their negative effects. This option has associated risks such as possible CO2 leakage from the storage sites. So far, negative effects deriving from a CO2 release have been reported for benthic macrofauna in both polluted and nonpolluted sediments. However, bacterial communities has no considered. In this work, risk assessment was carried out in order to evaluate the possible effects in a contaminated area considering bacterial responses (total number of cells, respiring activity, changes in the bacterial community composition and diversity)...
March 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28342386/association-between-environmental-factors-and-emergency-hospital-admissions-due-to-alzheimer-s-disease-in-madrid
#6
D R Culqui, C Linares, C Ortiz, R Carmona, J Díaz
INTRODUCTION: There are scarce studies of time series that analysed the short-term association between emergency hospital admissions due to Alzheimer's disease (AD) and environmental factors. The objective is to analyse the effect of heat waves, noise and air pollutants on urgent hospital admissions due to AD in Madrid. METHODS: Longitudinal ecological time series study was performed. The dependent variable was the emergency AD hospital admissions occurred in Madrid during the period 2001-2009...
March 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28342355/pd-nanospheres-decorated-reduced-graphene-oxide-with-multi-functions-highly-efficient-catalytic-reduction-and-ultrasensitive-sensing-of-hazardous-4-nitrophenol-pollutant
#7
A T Ezhil Vilian, Sang Rak Choe, Krishnan Giribabu, Sung-Chan Jang, Changhyun Roh, Yun Suk Huh, Young-Kyu Han
We illustrate a facile approach for in situ synthesis of Pd-gum arabic/reduced graphene oxide (Pd-GA/RGO) using GA as the reducing agent, which favors the instantaneous reduction of both Pd ions and GO into Pd nanoparticles (NPs) and RGO. From the morphological analysis of Pd-GA/RGO, we observed highly dispersed spherical 5nm Pd NPs decorated over RGO. The as-synthesized Pd-GA/RGO composite was employed for the catalytic reduction and the electrochemical detection of 4-nitrophenol (4-NP), respectively. The catalytic reduction of 4-NP was highly pronounced for Pd-GA/RGO (5min) when compared to Pd NPs (140min) and Pd/RGO (36min)...
March 8, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28342352/mechanochemical-mechanism-of-rapid-dechlorination-of-hexachlorobenzene
#8
Shanshan Deng, Shaoguo Kang, Nannan Feng, Jianxin Zhu, Bo Yu, Xiaofeng Xie, Jing Chen
Recent researches indicate that mechanochemical treatment (MCT) is a promising method to degrade the environmental hazards, especially in the area of persistent organic pollutants (POPs) disposal. However, the mechanochemical dechlorination mechanism of POPs still needs to be further verified. In this mechanochemical process, hexachlorobenzene (HCB) was chosen as a model pollutant with aluminum and alumina (Al+Al2O3) powders as the co-milling regents. Both of the intermediate analysis and quantum chemical calculations were adopted to elucidate the free radical dechlorination mechanism of HCB...
March 12, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28342339/a-novel-hybrid-strategy-for-pm2-5-concentration-analysis-and-prediction
#9
Ping Jiang, Qingli Dong, Peizhi Li
The analysis and prediction of air pollutants are of great significance in environmental research today since airborne pollution is a substantial threat, especially in urban agglomerations of China. To develop more effective warning systems and management advice, the authorities and city dwellers need more accurate forecasts of the air pollution. Most previous analysis systems were based on costly observation apparatus at fixed sites, forecasting models were usually built on observations within a certain range, and some observations contained biases...
March 22, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28341673/a-next-generation-sequencing-approach-to-characterize-the-impacts-of-land-based-sources-of-pollution-on-the-microbiota-of-southeast-florida-coral-reefs
#10
Christopher Staley, Thomas Kaiser, Maribeth L Gidley, Ian C Enochs, Paul R Jones, Kelly D Goodwin, Christopher D Sinigalliano, Michael J Sadowsky, Chan Lan Chun
Coral reefs are dynamic ecosystems known for decades to be endangered due, in large part, to anthropogenic impacts from land-based sources of pollution (LBSP). In this study, we utilized an Illumina-based next-generation sequencing approach to characterize prokaryotic and fungal communities from samples collected off the southeast coast of Florida. Water samples from coastal inlet discharges, oceanic outfalls of municipal wastewater treatment plants, treated wastewater effluent before discharge, open ocean samples, and coral tissue samples (mucus and polyps) were characterized to determine relationships between microbial communities in these matrices and those in reef water and coral tissues...
March 24, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28341572/cell-and-region-specificity-of-aryl-hydrocarbon-receptor-ahr-system-in-the-testis-and-the-epididymis
#11
A Wajda, J Łapczuk, M Grabowska, E Pius-Sadowska, M Słojewski, M Laszczynska, E Urasinska, B Machalinski, M Drozdzik
Aryl hydrocarbon receptor (AhR) plays multiple important functions in adaptive responses. Exposure to AhR ligands may produce an altered metabolic activity controlled by the AhR pathways, and consequently affect drug/toxin responses, hormonal status and cellular homeostasis. This research revealed species-, cell- and region-specific pattern of the AhR system expression in the rat and human testis and epididymis, complementing the existing knowledge, especially within the epididymal segments. The study showed that AhR level in the rat and human epididymis is higher than in the testis...
March 21, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28341464/reproductive-effects-of-oestrogenic-endocrine-disrupting-chemicals-in-astyanax-rivularis-inhabiting-headwaters-of-the-velhas-river-brazil
#12
André Alberto Weber, Davidson Peruci Moreira, Rafael Magno Costa Melo, Augusto Bicalho Cruz Vieira, Paula Suzanna Prado, Mirra Angelina Neres da Silva, Nilo Bazzoli, Elizete Rizzo
The Velhas River is the most polluted river in the state of Minas Gerais, south-eastern Brazil. Due to its historical and environmental relevance, the aim of this study was to evaluate the effects of oestrogenic endocrine disruptors on the reproduction of the lambari Astyanax rivularis, a small-sized species found in headwaters of the São Francisco River basin. Quarterly field samplings were carried out during a reproductive cycle in three streams of the upper Velhas River: S1 (reference site) and S2 and S3 (sites contaminated by untreated sewage)...
March 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28341295/robust-and-durable-superhydrophobic-fabrics-fabricated-via-simple-cu-nanoparticles-deposition-route-and-its-application-in-oil-water-separation
#13
Jintao Wang, Hongfei Wang
The exploitation of separation materials with high selectivity for oil pollutants is of great importance due to severe environmental damage from oil spillages and industrial discharge of oils. A facile in situ growth process for creating superhydrophobic-superoleophilic fabrics for oil-water separation is developed. This proposed method is based mainly on the deposition Cu nanoparticles and subsequent hydrophobic modification. Compared with the hydrophilicity of original fabric, the water contact angle of the modified fabric rises to 154...
March 21, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28341215/identification-and-molecular-characterization-of-cytochrome-p450-cyp450-family-genes-in-the-marine-ciliate-euplotes-crassus-the-effect-of-benzo-a-pyrene-and-beta-naphthoflavone
#14
Bora Yim, Hokyun Kim, Jisoo Kim, Haeyeon Kim, Eun-Ji Won, Young-Mi Lee
Marine ciliate Euplotes crassus, a single-cell eukaryote, and has been considered as a model organism for monitoring of environmental pollutions in sediments. Cytochrome P450 (CYP450) monooxygenase are phase I enzyme involved in detoxification of environmental pollutants, such as polycyclic aromatic hydrocarbons (PAHs). However, little information on CYP450 family genes in ciliate is available. In the present study, acute toxicity of PAH, benzo[a]pyrene (B[a]P) and PAH-like model compound, beta-naphthoflavone (β-NF), was investigated; full-length cDNA sequences and genomic structure of five CYP450 genes (CYP5680A1, CYP5681A1, CYP5681B1, CYP5682A1, and CYP5683A1) were analyzed; and finally their activities and transcriptional changes were measured after exposure to PAHs for 48h...
March 21, 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/28340989/bio-electron-fenton-bef-process-driven-by-microbial-fuel-cells-for-triphenyltin-chloride-tptc-degradation
#15
Xiao-Yu Yong, Dong-Yan Gu, Yuan-Dong Wu, Zhi-Ying Yan, Jun Zhou, Xia-Yuan Wu, Ping Wei, Hong-Hua Jia, Tao Zheng, Yang-Chun Yong
The intensive use of triphenyltin chloride (TPTC) has caused serious environmental pollution. In this study, an effective method for TPTC degradation was proposed based on the Bio-Electron-Fenton process in microbial fuel cells (MFCs). The maximum voltage of the MFC with graphite felt as electrode was 278.47% higher than that of carbon cloth. The electricity generated by MFC can be used for in situ generation of H2O2 to a maximum of 135.96μmolL(-1) at the Fe@Fe2O3(*)/graphite felt composite cathode, which further reacted with leached Fe(2+) to produce hydroxyl radicals...
February 15, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28340477/environmental-analysis-of-typical-antibiotic-resistant-bacteria-and-args-in-farmland-soil-chronically-fertilized-with-chicken-manure
#16
Xiang Zhao, Jinhua Wang, Lusheng Zhu, Weili Ge, Jun Wang
Antibiotics and the corresponding resistant bacteria and resistance genes (ARGs) are generally considered emerging pollutants. To assess the impacts of tetracycline (TC) and sulfonamide (SA) antibiotics that are eliminated with fecaluria as drug prototypes, farmland soil used to research long-term fertilization with chicken manure was collected at four sites in Shandong Province. In this study, the rates of bacterial drug resistance to the same antibiotic decreased with an increase in the concentration of that antibiotic, and the resistance rates to TCs were lower than those to SAs...
March 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28340462/assessment-of-arsenic-and-fluorine-in-surface-soil-to-determine-environmental-and-health-risk-factors-in-the-comarca-lagunera-mexico
#17
Yareli A Sariñana-Ruiz, Jorge Vazquez-Arenas, Fabiola S Sosa-Rodríguez, Israel Labastida, Ma Aurora Armienta, Antonio Aragón-Piña, Miguel A Escobedo-Bretado, Laura S González-Valdez, Patricia Ponce-Peña, Hugo Ramírez-Aldaba, René H Lara
Total, bioaccessible and mobile concentrations of arsenic and fluorine are determined in polluted surface soil within the Comarca Lagunera region using standardized protocols to obtain a full description of the environmental behavior for these elements. The composition of mineral phases associated with them is evaluated with microscopic and spectroscopic techniques. Mineralogical characterizations indicate that ultra-fine particles (<1-5 μm) including mimetite-vanadite (Pb5(AsO4)3Cl, Pb5(AsO4, VO4)3Cl)-like, lead arseniate (Pb3(AsO4)2)-like and complex arsenic-bearing compounds are main arsenic-bearing phases, while fluorite (CaF2) is the only fluorine-bearing phase...
March 10, 2017: Chemosphere
https://www.readbyqxmd.com/read/28340458/toxic-effects-of-environmental-pollutants-comparative-investigation-using-allium-cepa-l-and-lactuca-sativa-l
#18
Graciele Lurdes Silveira, Maria Gabriela Franco Lima, Gabriela Barreto Dos Reis, Marcel José Palmieri, Larissa Fonseca Andrade-Vieria
Studies that help understand the mechanisms of action of environmental pollutants are extremely important in environmental toxicology. In this context, assays using plants as models stand out for their simplicity and low performance cost. Among the plants used for this purpose, Allium cepa L. is the model most commonly applied for cytogenotoxic tests, while Lactuca sativa L., already widely used in phytotoxic investigations, has been gaining prominence in cytotoxic analyses. The present study aimed to compare the responses of A...
March 21, 2017: Chemosphere
https://www.readbyqxmd.com/read/28340423/carbon-nanotube-impeded-transport-of-non-steroidal-anti-inflammatory-drugs-in-xiangjiang-sediments
#19
Jin Yan, Ji-Lai Gong, Guang-Ming Zeng, Biao Song, Peng Zhang, Hong-Yu Liu, Shuang-Yan Huan, Xiao-Dong Li
Carbon nanotubes (CNTs), usually with a superior affinity with organic chemicals, are expected to ultimately released to the environment through their manufacturing, usage, and eventual disposal, which will influence the mobility and environmental risk of nonsteroidal anti-inflammatory drugs (NSAIDs). In this study, batch and column experiments were performed to examine the effects of two kinds of multi-walled carbon nanotubes (MWCNTs: MWCNT2040, MWCNT0815) and one kind of single-walled carbon nanotubes (SWCNTs) on the environmental fate of two NSAIDs, paracetamol (PA) and diclofenac sodium (DS), in sediments...
March 6, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28339680/operations-management-in-distribution-networks-within-a-smart-city-framework
#20
Raffaele Cerulli, Renata Paola Dameri, Anna Sciomachen
This article studies a vehicle routing problem with environmental constraints that are motivated by the requirements for sustainable urban transport. The empirical research presents a fleet planning problem that takes into consideration both minimum cost vehicle routes and minimum pollution. The problem is formulated as a mixed integer linear programming model and experimentally validated using data collected from a real situation: a grocery company delivering goods ordered via e-channels to customers spread in the urban and metropolitan area of Genoa smart city...
February 20, 2017: Mathematical Medicine and Biology: a Journal of the IMA
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