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https://www.readbyqxmd.com/read/29679945/occurrence-elimination-enantiomeric-distribution-and-intra-day-variations-of-chiral-pharmaceuticals-in-major-wastewater-treatment-plants-in-beijing-china
#1
Lei Duan, Yizhe Zhang, Bin Wang, Shubo Deng, Jun Huang, Yujue Wang, Gang Yu
The occurrence, eliminations, enantiomeric distribution and intra-day variations of five chiral pharmaceuticals (three beta-blockers and two antidepressants) were investigated in eight major WWTPs in Beijing, China. The results revealed that metoprolol (MTP) and venlafaxine (VFX) were of the highest concentrations among the five determined pharmaceuticals with mean concentrations of 803 ng L-1 and 408 ng L-1 , respectively in influents, and 354 ng L-1 and 165 ng L-1 in effluents, respectively...
April 18, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29679943/photocatalytic-decomposition-of-selected-biologically-active-compounds-in-environmental-waters-using-tio-2-polyaniline-nanocomposites-kinetics-toxicity-and-intermediates-assessment
#2
Daniela V Šojić Merkulov, Vesna N Despotović, Nemanja D Banić, Sanja J Armaković, Nina L Finčur, Marina J Lazarević, Dragana D Četojević-Simin, Dejan Z Orčić, Marija B Radoičić, Zoran V Šaponjić, Mirjana I Čomor, Biljana F Abramović
A comprehensive study of the removal of selected biologically active compounds (pharmaceuticals and pesticides) from different water types was conducted using bare TiO2 nanoparticles and TiO2 /polyaniline (TP-50, TP-100, and TP-150) nanocomposite powders. In order to investigate how molecular structure of the substrate influences the rate of its removal, we compared degradation efficiency of the initial substrates and degree of mineralization for the active components of pharmaceuticals (propranolol, and amitriptyline) and pesticides (sulcotrione, and clomazone) in double distilled (DDW) and environmental waters...
April 18, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29679942/radiocesium-concentrations-in-soil-and-leaf-after-decontamination-practices-in-a-forest-plantation-highly-polluted-by-the-fukushima-accident
#3
Manuel López-Vicente, Yuichi Onda, Junko Takahashi, Hiroaki Kato, Shinya Chayama, Keigo Hisadome
Owing to the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident a vast amount of radiocesium was released polluting the land. Afterwards, a variety of decontamination practices has been done, reducing the ambient dose rates. In this study we evaluated the effectiveness of eight forest decontamination practices by means of monitoring the radiocesium (137 Cs) concentration in soil and leaf samples, and the daily discharge rates in ten plots during 27 months (May 2013-July 2015). A forest plantation located 16 km southwest to the FDNPP and within the exclusion area was selected...
April 18, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29679938/exposure-to-nanoplastics-disturbs-the-gut-microbiome-in-the-soil-oligochaete-enchytraeus-crypticus
#4
Bo-Kai Zhu, Yi-Meng Fang, Dong Zhu, Peter Christie, Xin Ke, Yong-Guan Zhu
Microplastics are emerging pollutants that have recently aroused considerable concern but most toxicological studies have focused on marine biota, with little investigation of the influence of microplastics on terrestrial ecosystems. Here, we fed the soil oligochaete Enchytraeus crypticus with oatmeal containing 0, 0.025, 0.5, and 10% (dry weight basis) nano-polystyrene (0.05-0.1 μm particle size) to elucidate the impact of microplastics on the growth and gut microbiome of Enchytraeus crypticus. We observed a significant reduction of weight in the animals fed 10% polystyrene and an increase in the reproduction of those fed 0...
April 18, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29679937/chronic-radiation-exposure-modifies-temporal-dynamics-of-cytogenetic-but-not-reproductive-indicators-in-scots-pine-populations
#5
Stanislav Geras'kin, Alla Oudalova, Alexey Kuzmenkov, Denis Vasiliyev
Over a period of 13 years (2003-2015), reproductive and cytogenetic effects are investigated in Scots pine populations growing in the Bryansk region of Russia radioactively contaminated as a result of the Chernobyl accident. In reference populations, the frequencies of cytogenetic abnormalities are shown to change with time in a cyclic manner. In chronically exposed populations, the cyclic patterns in temporal dynamics of cytogenetic abnormalities appear to be disturbed. In addition, a tendency to decrease in the frequencies of cytogenetic abnormalities with time as well as an increase in their variability with dose rate is revealed...
April 18, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29679935/the-role-of-adsorbate-size-on-adsorption-of-ne-and-xe-on-graphite
#6
Luisa Prasetyo, Quang K Loi, Shiliang Johnathan Tan, D D Do, D Nicholson
We have carried out an extensive grand canonical Monte Carlo simulation to investigate the adsorption of neon and xenon on graphite. The adsorbate collision diameters of neon and xenon are smaller and greater respectively, than the commensurate graphite lattice spacing λ=3×3R300 of 0.426 nm. Simulated isotherms and isosteric heats were obtained using a graphite model that has been shown to describe successfully the adsorbate transitions for krypton, methane and nitrogen by Prasetyo et al. (2017), which have collision diameters close to λ...
April 10, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29679934/nanopriming-with-zero-valent-iron-nzvi-enhances-germination-and-growth-in-aromatic-rice-cultivar-oryza-sativa-cv-gobindabhog-l
#7
Titir Guha, K V G Ravikumar, Amitava Mukherjee, Anita Mukherjee, Rita Kundu
Engineered nanoparticles are utilized in agriculture for various purposes. They can be used as fertilizer, carrier for macro/micro nutrients or priming agents. Various nanoparticles are reported to have toxicity at very high doses, but at optimum concentration, they can be beneficial for plant growth and development. In the present study, low concentrations of nZVI nanoparticles were evaluated for their growth enhancement potential as seed priming agent in an aromatic rice cultivar, Oryza sativa cv. Gobindabhog...
April 12, 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29679929/a-phylogenetic-framework-facilitates-y-str-variant-discovery-and-classification-via-massively-parallel-sequencing
#8
Tunde I Huszar, Mark A Jobling, Jon H Wetton
Short tandem repeats on the male-specific region of the Y chromosome (Y-STRs) are permanently linked as haplotypes, and therefore Y-STR sequence diversity can be considered within the robust framework of a phylogeny of haplogroups defined by single nucleotide polymorphisms (SNPs). Here we use massively parallel sequencing (MPS) to analyse the 23 Y-STRs in Promega's prototype PowerSeq™ Auto/Mito/Y System kit (containing the markers of the PowerPlex® Y23 [PPY23] System) in a set of 100 diverse Y chromosomes whose phylogenetic relationships are known from previous megabase-scale resequencing...
April 12, 2018: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/29679911/the-effects-of-valproate-and-topiramate-use-on-serum-insulin-leptin-neuropeptide-y-and-ghrelin-levels-in-epileptic-children
#9
Nafiye Polat Çiçek, Tülay Kamaşak, Mine Serin, Aysenur Okten, Ahmet Alver, Ali Cansu
PURPOSE: Although some drugs used in the treatment of epilepsy are known to affect body weight, the hormonal factors responsible have not been sufficiently described. The purpose of this study was to compare insulin, leptin, neuropeptide Y and ghrelin levels in children with epilepsy receiving monotherapy with topiramate (TPM) and valproic acid (VPA), the drugs whose effects on body weight have been most discussed, with those of a control group. METHOD: 48 patients (25 VPA, 23 TPM) aged between 6 and 15...
April 11, 2018: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/29679898/heart-rate-variability-alterations-in-late-life-depression-a-meta-analysis
#10
REVIEW
Lydia Brown, Chandan Karmakar, Richard Gray, Ripu Jindal, Terrence Lim, Christina Bryant
OBJECTIVE: There is strong evidence for a bi-directional relationship between heart-health and depression in later life, but the physiological mechanisms underlying this relationship remain unclear. Heart rate variability is one promising factor that might help explain this relationship. We present results of a meta-analysis that considers heart rate variability alterations in older adults with depression. METHODS: Literature search of Embase, PsychInfo and Medline revealed five clinical studies and six observational studies that examined the relationship between heart rate variability and depression in adults with a mean age over 60...
April 10, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29679869/characterization-of-adsorption-and-desorption-of-lawn-herbicide-siduron-in-heavy-metal-contaminated-soils
#11
Rong Jiang, Meie Wang, Weiping Chen
Siduron is a widely used herbicide in urban lawn and has been frequently detected in urban and suburban surface water. However, characteristics of its environmental behavior in soil are seldom reported. The combined pollution of heavy metals, especially for Cu, Pb, Cd, Zn and siduron would be common because of the widely existence of heavy metal pollution in urban soils. In this study, four soils with similar physicochemical properties but different levels of preexisting heavy metals were selected to investigate the adsorption and successive desorption of siduron using batch experiments...
April 9, 2018: Chemosphere
https://www.readbyqxmd.com/read/29679867/n-acetylcysteine-protects-against-microcystin-lr-induced-endoplasmic-reticulum-stress-and-germ-cell-apoptosis-in-zebrafish-testes
#12
Sujuan Zhao, Ying Liu, Fang Wang, Dexiang Xu, Ping Xie
Previous studies have shown that microcystin-LR (MCLR) is a reproductive toxicant that induces germ cell apoptosis in the testes, but the underlying mechanisms have not been well understood. In this study, we investigated that MCLR induces germ cell apoptosis is through activation of endoplasmic reticulum (ER) stress and N-acetylcysteine (NAC), an antioxidant could protect against germ cell apoptosis by inhibiting the ER stress. Healthy male zebrafish were intraperitoneally injected with NAC (500 nM), beginning at 2 h before different doses of MCLR (0, 50, 100, 200 μg/kg)...
April 6, 2018: Chemosphere
https://www.readbyqxmd.com/read/29679866/influence-of-humic-substances-on-iron-distribution-in-the-east-china-sea
#13
Han Su, Rujun Yang, Yan Li, Xuchen Wang
The influence of humic substances (specifically humic and fulvic acids, referred to as HS-HA and HS-FA) as well as other factors, such as major nutrient concentrations of total dissolved nitrogen (TDN), total dissolved phosphate (TDP) and hydrologic factors, on the distribution of total dissolved iron (DFe) and the chemical speciation of DFe was studied in the East China Sea (ECS) during a summer cruise in 2013. As the wide rage fraction of nature organic matter, the HS-HA, HS-FA in ESC contains most part of the organic ligand (Lt) of DFe...
April 9, 2018: Chemosphere
https://www.readbyqxmd.com/read/29679855/rutin-and-rutin-conjugated-gold-nanoparticles-ameliorate-collagen-induced-arthritis-in-rats-through-inhibition-of-nf-%C3%AE%C2%BAb-and-inos-activation
#14
Anum Gul, Bimal Kunwar, Maryam Mazhar, Shaheen Faizi, Dania Ahmed, Muhammad Raza Shah, Shabana U Simjee
Numerous studies have suggested that nuclear factor-κB (NF-κB) and inducible nitric oxide synthase (iNOS) are important mediators of inflammatory response in human and animal models of arthritis. Besides, oxidative stress markers, nitric oxide (NO) and peroxide (PO) are also major contributors in the pathogenesis of rheumatoid arthritis (RA). Over expression of these inflammatory mediators leads to the extracellular matrix degradation, and excessive cartilage and bone resorption, ultimately leading to the irreversible damage to joints...
April 18, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29679846/biodegradability-and-ecological-safety-assessment-of-stenotrophomonas-sp-ddt-1-in-the-ddt-contaminated-soil
#15
Hua Fang, Yanfei Deng, Qiqing Ge, Jiajia Mei, Houpu Zhang, Huifang Wang, Yunlong Yu
The biodegradability and ecological safety assessment of the previously isolated DDT-degrading bacterial strain Stenotrophomonas sp. DDT-1 were investigated in the DDT-contaminated soil under laboratory and field conditions. Under laboratory conditions, the degradation rates of fresh p,p'-DDT in soil were enhanced by 2.0-3.0-fold with the introduction of the strain DDT-1 compared to those of the control treatments. A similar enhancement in the dissipation of DDTs (p,p'-DDT, p,p'-DDE, p,p'-DDD, and o,p'-DDT) in the aged DDT-contaminated field plot soils resulted from the inoculation with this strain...
April 18, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29679842/context-matters-social-cognition-task-performance-in-psychometric-schizotypes
#16
Madeline J Pflum, Diane C Gooding
Patients with schizophrenia show performance deficits on tasks requiring empathy-related social cognition. The extent to which empathy impairments are observed in psychometric schizotypy is unclear. We compared accuracy and reaction time in three groups of individuals characterized by positive schizotypy (n = 79), negative schizotypy (n = 123), or low schizotypy group (n = 137). On a social cognition task that provided context, namely, the Emotion Perspective Taking Task, the positive schizotypes showed poorer performance than the negative schizotypy and control groups...
April 4, 2018: Psychiatry Research
https://www.readbyqxmd.com/read/29679840/estimation-of-stature-from-sternum-exploring-the-quadratic-models
#17
Ashish Saraf, Tanuj Kanchan, Kewal Krishan, Navneet Ateriya, Puneet Setia
Identification of the dead is significant in examination of unknown, decomposed and mutilated human remains. Establishing the biological profile is the central issue in such a scenario, and stature estimation remains one of the important criteria in this regard. The present study was undertaken to estimate stature from different parts of the sternum. A sample of 100 sterna was obtained from individuals during the medicolegal autopsies. Length of the deceased and various measurements of the sternum were measured...
April 14, 2018: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/29679835/adsorption-mechanism-of-emerging-and-conventional-phenolic-compounds-on-graphene-oxide-nanoflakes-in-water
#18
Hepsiba Niruba Catherine, Ming-Han Ou, Basavaraju Manu, Yang-Hsin Shih
Emerging contaminants (ECs) such as bisphenol A (BPA), 4-nonylphenol (4-NP) and tetrabromobisphenol A (TBBPA) have gained immense attention worldwide due to their potential threat to humans and environment. Graphene oxide (GO) nanomaterial is considered as an important sorbent due to its exceptional range of environmental application owing to its unique properties. GO was also considered as one of ECs because of its potential hazard. The adsorption of organic contaminants such as phenolic ECs on GO affects the stability of GO nanoflakes in water and the fate of organic contaminants, which would cause further environmental risk...
April 18, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29679830/air-stagnation-and-its-impact-on-air-quality-during-winter-in-sichuan-and-chongqing-southwestern-china
#19
Tingting Liao, Ke Gui, Wanting Jiang, Shigong Wang, Bihan Wang, Zhaoliang Zeng, Huizheng Che, Yaqiang Wang, Yang Sun
The Sichuan and Chongqing regions suffer from severe haze weather in winter due to the unfavourable atmospheric diffusion conditions. Reanalysis and precipitation datasets were applied in this study to calculate and distinguish air stagnation events using a developed criterion, and the impacts of the occurrence of air stagnation events on air quality were analysed in combination with the PM2.5 concentration data for the winters of 2013-2016. The highest occurrence frequency of air stagnation events was observed in 2013, and the lowest, 2015...
April 18, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29679828/accelerated-effects-of-nano-zno-on-phosphorus-removal-by-chlorella-vulgaris-formation-of-zinc-phosphate-crystallites
#20
Huaixian Xiao, Na Liu, Ke Tian, Shixiang Liu, Fei Ge
Nanoparticles have been reported to induce toxicity to aquatic organisms, however, their potential impacts on phosphorus removal from wastewater by algae are unclear. In this study, the effects of nanoparticle ZnO (nano-ZnO) on phosphate (PO4 3- ) removal by a green alga Chlorella vulgaris were investigated. We found that PO4 3- removal efficiency was accelerated with high concentrations of nano-ZnO (0.04-0.15mM) but reduced with low concentrations of nano-ZnO (0.005-0.04mM) compared to the control (without nano-ZnO), suggesting that PO4 3- removal efficiency by C...
April 18, 2018: Science of the Total Environment
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