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https://www.readbyqxmd.com/read/29470753/spatial-variation-source-identification-and-quality-assessment-of-surface-water-geochemical-composition-in-the-indus-river-basin-pakistan
#1
Faizan Ur Rehman Qaisar, Fan Zhang, Ramesh Raj Pant, Guanxing Wang, Sardar Khan, Chen Zeng
The Indus River Basin (IRB) with an area of 139,202 km2 is the lifeline river basin of Pakistan. An intensive study was conducted in six subcatchments of the IRB with five in the Upper Indus Basin (UIB) and one of the Lower Indus Basin (LIB; between Tarbela Dam and Panjand), i.e., the Gilgit River Basin (UIB-I), Hunza River Basin (UIB-II), UIB-III, UIB-IV and UIB-V, and LIB. A total of 84 surface water samples were collected from main stream and tributaries from June to August, 2016. The pH, electric conductivity (EC), and total dissolved solids (TDS) were measured in situ, whereas major ions (Ca2+ , Mg2+ , K+ , Na+ , Cl- , SO4 2- , and NO3 - ) and Si were analyzed in the laboratory...
February 22, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29470719/seasonal-and-spatial-variation-of-reservoir-water-quality-in-the-southwest-of-ethiopia
#2
Bizuneh Woldeab, Abebe Beyene, Argaw Ambelu, Ishi Buffam, Seid Tiku Mereta
This research investigated the spatiotemporal variation of water quality in the Gilgel Gibe reservoir, Ethiopia, using physicochemical water quality parameters. Nonparametric tests and multivariate statistical techniques were used to evaluate data sets measured during dry and rainy seasons. Electrical conductivity (EC), pH, biochemical oxygen demand (BOD5 ), total phosphorus (TP), total nitrogen (TN), nitrate (NO3 - ), total dissolved solids (TDSs), and total suspended solids (TSSs) were all significantly different among seasons (Mann-Whitney U test, p < 0...
February 22, 2018: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29465761/tumor-deposits-in-salivary-gland-tumors
#3
Sulen Sarioglu, Emel Kilicarslan, Barbaros Aydin, Melih Arif Kozen, Fadime Akman, Ilhan Oztop, Emel Ada, Ahmet Omer Ikiz
Tumor deposits (TDs), identified in different types of carcinomas are associated with poor prognosis. Salivary gland tumors were evaluated for the first time for TDs in this series. Pathological and clinical features of 25 salivary gland carcinomas primarily treated surgically including neck dissection were determined and all cases were evaluated for TDs in dissection specimens. Seven patients (28%) had TDs. There was no difference for TDs when histological type, tumor grade, tumor localization, pT, pN stage, surgical margin, lymphovascular, perineural invasion, local recurrence, distant metastatic disease and overall survival were considered...
February 21, 2018: Pathology International
https://www.readbyqxmd.com/read/29456930/review-of-the-evidence-for-the-management-of-co-morbid-tic-disorders-in-children-and-adolescents-with-attention-deficit-hyperactivity-disorder
#4
REVIEW
Michael O Ogundele, Hani F Ayyash
Attention deficit hyperactivity disorder (ADHD) is the most common neurodevelopmental disorder in children and adolescents, with prevalence ranging between 5% and 12% in the developed countries. Tic disorders (TD) are common co-morbidities in paediatric ADHD patients with or without pharmacotherapy treatment. There has been conflicting evidence of the role of psychostimulants in either precipitating or exacerbating TDs in ADHD patients. We carried out a literature review relating to the management of TDs in children and adolescents with ADHD through a comprehensive search of MEDLINE, EMBASE, CINAHL and Cochrane databases...
February 8, 2018: World Journal of Clinical Pediatrics
https://www.readbyqxmd.com/read/29453116/developing-a-methodology-for-real-time-trading-of-water-withdrawal-and-waste-load-discharge-permits-in-rivers
#5
Maryam Soltani, Reza Kerachian
In this paper, a new methodology is proposed for the real-time trading of water withdrawal and waste load discharge permits in agricultural areas along the rivers. Total Dissolved Solids (TDS) is chosen as an indicator of river water quality and the TDS load that agricultural water users discharge to the river are controlled by storing a part of return flows in some evaporation ponds. Available surface water withdrawal and waste load discharge permits are determined using a non-linear multi-objective optimization model...
February 13, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29445283/application-value-of-selected-serum-indicators-in-the-differential-diagnosis-of-geriatric-depression-and-transient-depressive-state
#6
Yuhao Xu, Shun Yao, Hong Wei, Xiaolan Zhu, Ming Yu, Yuefeng Li
Background: Transient depressive state (TDS) is a transient, negative emotional state caused by certain events or situations. Because of the similarity in depressive symptoms between depression and TDS that arise within 2 weeks of their onset, it is difficult to distinguish TDS from depression. The aims of the present study were to investigate the application value of selected serum indicators in the differential diagnosis of geriatric depression and TDS in the early stage and to provide evidence for treatment...
2018: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/29430752/discrimination-of-cynanchum-wilfordii-and-cynanchum-auriculatum-by-terahertz-spectroscopic-analysis
#7
Woo Sik Ham, Jinju Kim, Dae Joon Park, Han-Cheol Ryu, Young Pyo Jang
INTRODUCTION: Precise identification of botanical origin of plant species is crucial for the quality control of herbal medicine. In Korea, the root part of Cynanchum auriculatum has been misused for C. wilfordii in the herbal drug market due to their morphological similarities. Currently, DNA analysis using the polymerase chain reaction (PCR) method is employed to discriminate between these species. OBJECTIVE: In order to develop a new analytical tool for the rapid discrimination of C...
February 12, 2018: Phytochemical Analysis: PCA
https://www.readbyqxmd.com/read/29429112/suspended-particulate-matter-determines-physical-speciation-of-fe-mn-and-trace-metals-in-surface-waters-of-loire-watershed
#8
Mohamed Baalousha, Serge Stoll, Mikaël Motelica-Heino, Nathalie Guigues, Gilles Braibant, Frédéric Huneau, Philippe Le Coustumer
This study investigates the spatiotemporal variability of major and trace elements, dissolved organic carbon (DOC), total dissolved solids (TDS), and suspended particulate matter (SPM) in surface waters of several hydrosystems of the Loire River watershed in France. In particular, this study aims to delineate the impact of the abovementioned water physicochemical parameters on natural iron and manganese physical speciation (homoaggregation/heteroaggregation) among fine colloidal and dissolved (< 10 nm), colloidal (10-450 nm) and particulate (> 450 nm) phases in Loire River watershed...
February 10, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29427155/spatial-patterns-of-pollutants-in-water-of-metropolitan-drain-in-lahore-pakistan-using-multivariate-statistical-techniques
#9
Shumaila Majeed, Sajid Rashid, Abdul Qadir, Colin Mackay, Faisal Hayat
The present study was conducted to investigate the pollutant load in surface water of the Sattukatla drain in Lahore, Pakistan. This drain is receiving high volumes of pollutants from industries and municipal sewage. To study the pollution status of this urban drain, different parameters such as pH, EC, TDS, BOD, NO3, PO4, COD, K, Mg, Ca, Ni, Fe, Co, Pb, Cu, Cd, and Zn were analyzed. These 17 parameters were monitored along the longitudinal gradient of drain consisting of 15 key sampling sites. The studied parameters were subjected to hierarchical cluster analysis (HCA) and factor analysis (FA)...
February 9, 2018: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29425949/net-acidity-indicates-the-whole-effluent-toxicity-of-ph-and-dissolved-metals-in-metalliferous-saline-waters
#10
Bradley P Degens, Rick Krassoi, Lynette Galvin, Brad Reynolds, Tina Micevska
Measurements of potential acidity in water are used to manage aquatic toxicity risks of discharge from acid sulfate soils or acid mine drainage. Net acidity calculated from pH, dissolved metals and alkalinity is a common measurement of potential acidity but the relevance of current risk thresholds to aquatic organisms are unclear. Aquatic toxicity testing was carried out using four halophytic organisms with water from four saline sources in southern Western Australia (3 acidic drains and one alkaline river; 39-40 g TDS/L) where acidity was varied by adjusting pH to 4...
February 3, 2018: Chemosphere
https://www.readbyqxmd.com/read/29421114/long-term-evaluation-of-water-quality-parameters-of-the-karoun-river-using-a-regression-approach-and-the-adaptive-neuro-fuzzy-inference-system
#11
Majid Mahmoodabadi, Ruhollah Rezaei Arshad
This paper investigates chemical water quality parameters of the Karoun, the greatest and the most important river of Iran, during a 48-year period, from 1968 to 2015. Water discharge (Q) fluctuates between 191.1m3s-1 and 1758.7m3s-1, with a decreasing trend over the 48-year period. Except pH, other water quality parameters increased, significantly, so that the rate of increase for EC and TDS was 25.71μScm-1y-1 and 16.66mgl-1y-1, respectively. Moreover, SO4-2, HCO3-, Cl-, Ca+2, Mg+2 and Na+ have increased by 0...
January 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29414348/evaluation-of-total-phenol-pollution-in-water-of-san-martin-canal-from-santiago-del-estero-argentina
#12
C A Acosta, C E López Pasquali, G Paniagua, R M Garcinuño, P Fernández Hernando
Santiago del Estero is a province located in northwestern Argentina. The Dulce River is used for irrigation through a vast network of channels and ditches, including the San Martin Canal (SMC), which crosses the capital city of Santiago del Estero. This canal's water is used for drinking, as well as recreational use for the general population. However, this river has been seriously polluted for several decades. The present study focuses on the identification and the quantification of the water pollution levels of total phenols in the SMC according to the seasonal periods...
February 1, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29414178/comparative-thermogravimetric-analyses-of-co-combustion-of-textile-dyeing-sludge-and-sugarcane-bagasse-in-carbon-dioxide-oxygen-and-nitrogen-oxygen-atmospheres-thermal-conversion-characteristics-kinetics-and-thermodynamics
#13
Wenhao Xie, Shaoting Wen, Jingyong Liu, Wuming Xie, Jiahong Kuo, Xingwen Lu, Shuiyu Sun, Kenlin Chang, Musa Buyukada, Fatih Evrendilek
Thermodynamic and kinetic parameters of co-combustion of textile dyeing sludge (TDS) and sugarcane bagasse (SB) were studied using thermogravimetric analysis in CO2/O2 and N2/O2 atmospheres. Our results showed that the comprehensive combustion characteristic index (CCI) of the blends was improved by 1.71-4.32 times. With the increased O2 concentration, co-combustion peak temperature decreased from 329.7 to 318.2 °C, with an increase in its maximum weight loss rate from 10.04 to 14.99%/min and its CCI by 1...
February 3, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29407698/elucidating-the-stimulatory-and-inhibitory-effects-of-dissolved-sulfide-on-sulfur-oxidizing-bacteria-sob-driven-autotrophic-denitrification
#14
Hui Lu, Haiqin Huang, Weiming Yang, Hamish Robert Mackey, Samir Kumar Khanal, Di Wu, Guang-Hao Chen
Autotrophic denitrification has been widely studied for odor mitigation, corrosion control and nitrogen removal in recent years. This paper examines the response of sulfur-oxidizing bacteria (SOB) driven autotrophic denitrification under short-term stress of dissolved sulfide. A series of batch tests were conducted to investigate the effect of different sulfide concentrations (0-1600 mg-total dissolved sulfide (TDS)/L) on autotrophic denitrification and sulfide oxidation by SOB-enriched sludge. Our results show that autotrophic denitrification (NO3- to N2) was stimulated up to 200 mg-TDS/L with a maximum denitrification rate of 9...
January 19, 2018: Water Research
https://www.readbyqxmd.com/read/29405125/phase-transition-studies-of-na-sub-3-sub-bi-system-under-uniaxial-strain
#15
Tiaoping Nie, Lijun Meng, Yanru Li, Yanhua Luan, Jun Yu
We investigated the electronic properties and phase transitions of Na3Bi in four structural phases (space groups P63/mmc, P3(_)c1, Fm3(_)m and Cmcm) under constant-volume uniaxial strain using first-principles method. For P63/mmc and P3(_)c1-Na3Bi, an important phase transition from a topological Dirac semimetal (TDS) to a topological insulator (TI) appears under compression strain around 4.5%. The insulating gap increases with the increasing compressive strain and up to around 0.1eV at strain 10%. However, both P63/mmc and P3(_)c1-Na3Bi still keep the properties of TDS within tensile strain 0~10%, although the Dirac points move away from the  point along -A in reciprocal space as tensile strain increases...
February 6, 2018: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/29402041/decoupling-substrate-thickness-and-refractive-index-measurement-in-thz-time-domain-spectroscopy
#16
Farah Vandrevala, Erik Einarsson
Terahertz time-domain spectroscopy (THz-TDS) relies heavily on knowing precisely the thickness or refractive index of a material. In practice, one of these values is assumed to be known, or their product is numerically optimized to converge on suitable values. Both approaches are prone to errors and may mask some real features or properties of the material being studied. To eliminate these errors, we use THz-TDS in reflection geometry to accurately and independently determine both thickness and refractive index by illuminating the step-edge of a substrate atop a metal stage...
January 22, 2018: Optics Express
https://www.readbyqxmd.com/read/29398952/naphthenic-acids-removal-from-high-tds-produced-water-by-persulfate-mediated-iron-oxide-functionalized-catalytic-membrane-and-by-nanofiltration
#17
Ashish Aher, Joseph Papp, Andrew Colburn, Hongyi Wan, Evan Hatakeyama, Prakhar Prakash, Ben Weaver, Dibakar Bhattacharyya
Oil industries generate large amounts of produced water containing organic contaminants, such as naphthenic acids (NA) and very high concentrations of inorganic salts. Recovery of potable water from produced water can be highly energy intensive is some cases due to its high salt concentration, and safe discharge is more suitable. Here, we explored catalytic properties of iron oxide (FexOy nanoparticles) functionalized membranes in oxidizing NA from water containing high concentrations of total dissolved solids (TDS) using persulfate as an oxidizing agent...
November 1, 2017: Chemical Engineering Journal
https://www.readbyqxmd.com/read/29391733/a-study-on-evaluation-of-efficacy-of-bethanechol-in-the-management-of-chemoradiation-induced-xerostomia-in-oral-cancer-patients
#18
M Kavitha, K Mubeen, K R Vijayalakshmi
Objectives: Squamous cell carcinoma is the most common oral cancer. Radiotherapy with concomitant chemotherapy is an ideal treatment modality largely used for oral cancers, which precipitates many side effects, of which the most challenging and debilitating side effect is xerostomia. This study aimed to evaluate the efficacy of bethanechol in patients with xerostomia following chemoradiation therapy for oral cancer. Materials and Methods: Fifty patients with xerostomia postchemoradiation therapy, aged between 30 and 65 years, were selected based on selection criteria...
September 2017: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/29377767/dietary-exposure-to-cadmium-of-shenzhen-adult-residents-from-a-total-diet-study
#19
Zhou Wang, Liubo Pan, Guihua Liu, Huimin Zhang, Jinzhou Zhang, Jie Jiang, Ying Xiao, Weibin Bai, Rui Jiao, Wei Huang
Cadmium (Cd) contamination has become a public health concern in recent decades. The aim of the present study was to assess the contribution of dietary Cd exposure and its health risk among Shenzhen adult residents using the Total Diet Study (TDS) approach. Cd was determined in 13 food groups using 276 individual samples by ICP-MS. The major food contributors to Cd exposure of Shenzhen adult residents were "Vegetables" (32.6% of the total exposure), "Rice and its products" (19.2% of the total exposure) and "Fish, seafood and shellfish" (18...
January 29, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29373817/trans-resveratrol-ameliorates-anxiety-like-behaviors-and-fear-memory-deficits-in-a-rat-model-of-post-traumatic-stress-disorder
#20
Gaowen Li, Gang Wang, Jing Shi, Xueyi Xie, Ning Fei, Ling Chen, Na Liu, Mingxin Yang, Jianchun Pan, Wu Huang, Ying Xu
trans-Resveratrol, a natural polyphenol enriched in grape seed and skin, has been extensively investigated for its antioxidant, anti-inflammatory and anti-psychiatric properties. The present study examined the effects of trans-resveratrol on ameliorating anxiety-like behaviors and fear memory deficits induced by time-dependent sensitization (TDS) procedure, which is a classical animal model for mimicking posttraumatic stress disorder (PTSD). The results suggested that trans-resveratrol at doses of 10, 20 and 40 mg/kg (via gavage, i...
January 23, 2018: Neuropharmacology
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