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https://www.readbyqxmd.com/read/29040856/a-novel-bio-electrochemical-system-with-sand-activated-carbon-separator-al-anode-and-bio-anode-integrated-micro-electrolysis-electro-flocculation-cost-effectively-treated-high-load-wastewater-with-energy-recovery
#1
Changfei Gao, Lifen Liu, Fenglin Yang
A novel bio-electrochemical system (BES) was developed by integrating micro-electrolysis/electro-flocculation from attaching a sacrificing Al anode to the bio-anode, it effectively treated high load wastewater with energy recovery (maximum power density of 365.1 mW/m(3) and a maximum cell voltage of 0.97 V), and achieving high removals of COD (>99.4%), NH4(+)-N (>98.7%) and TP (>98.6%). The anode chamber contains microbes, activated carbon (AC)/graphite granules and Al anode. It was separated from the cathode chamber containing bifunctional catalytic and filtration membrane cathode (loaded with Fe/Mn/C/F/O catalyst) by a multi-medium chamber (MMC) filled with manganese sand and activated carbon granules, which replaced expensive PEM and reduced cost...
October 4, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29040701/comparison-of-glomerular-filtration-rate-estimating-equations-derived-from-creatinine-and-cystatin-c-validation-in-the-age-gene-environment-susceptibility-reykjavik-elderly-cohort
#2
Jonas Björk, Anders Grubb, Vilmundur Gudnason, Olafur S Indridason, Andrew S Levey, Runolfur Palsson, Ulf Nyman
Background: Validation studies comparing glomerular filtration rate (GFR) equations based on standardized creatinine and cystatin C assays in the elderly are needed. The Icelandic Age, Gene/Environment Susceptibility-Kidney cohort was used to compare two pairs of recently developed GFR equations, the revised Lund-Malmö creatinine equation (LMRCr) and the arithmetic mean of the LMRCr and Caucasian, Asian, Paediatric and Adult cystatin C equations (MEANLMR+CAPA), as well as the Full Age Spectrum creatinine equation (FASCr) and its combination with cystatin C (FASCr+Cys), with the corresponding pair of Chronic Kidney Disease Epidemiology Collaboration equations (CKD-EPICr and CKD-EPICr+Cys)...
October 5, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29040297/decreased-nk-cell-immunity-in-kidney-transplant-recipients-late-post-transplant-and-increased-nk-cell-immunity-in-patients-with-recurrent-miscarriage
#3
Li Zhu, Mostafa Aly, Haihao Wang, Hristos Karakizlis, Rolf Weimer, Christian Morath, Ruben Jeremias Kuon, Bettina Toth, Gerhard Opelz, Volker Daniel
BACKGROUND: There is evidence that NK-cell reactivity might affect graft outcome in transplant recipients and pregnancy in women. METHOD: NK-cell subsets were determined in whole blood using eight-colour-fluorescence flow cytometry in patients before and after renal transplantation, patients with recurrent miscarriage (RM) and healthy controls (HC). RESULTS: Patients late post-transplant (late-Tx) with functioning renal transplants showed abnormally low CD56dimCD16+ NK-cells containing both perforin and granzyme (vs HC p = 0...
2017: PloS One
https://www.readbyqxmd.com/read/29040075/development-of-recreational-water-spray-ground-design-regulations-in-new-york-state-an-engineering-approach
#4
John D Paccione, David M Dziewulski, Pamela L Young
The New York State Department of Health developed regulations for the design and operation of spray grounds to address the potential for recreational water illnesses associated with this type of venue. The water treatment component of the new regulation was based on a first-principles approach to address the unique challenges of spray grounds. The regulation departs from traditional recreational water treatment methods by requiring a novel filtration approach and the installation of UV disinfection. The water treatment system was also required to incorporate automatic control systems to ensure the water quality is maintained with a minimum of operator involvement...
October 2017: Journal of Water and Health
https://www.readbyqxmd.com/read/29040073/removal-of-model-viruses-e-coli-and-cryptosporidium-oocysts-from-surface-water-by-zirconium-and-chitosan-coagulants
#5
Ekaterina Christensen, Vegard Nilsen, Tor Håkonsen, Arve Heistad, Christophe Gantzer, Lucy J Robertson, Mette Myrmel
The present work evaluates the effect of contact filtration, preceded by coagulation with zirconium (Zr) and chitosan coagulants, on model microorganisms and waterborne pathogens. River water intended for potable water production was spiked with MS2 and Salmonella Typhimurium 28B bacteriophages, Escherichia coli, and Cryptosporidium parvum oocysts prior to coagulation. The hygienic performance demonstrated by Zr comprised 3.0-4.0 log10 removal of viruses and 5.0-6.0 log10 removal of E. coli and C. parvum oocysts...
October 2017: Journal of Water and Health
https://www.readbyqxmd.com/read/29036821/estimated-glomerular-filtration-rate-is-not-associated-with-alzheimer-s-disease-in-a-northern-ireland-cohort
#6
Euan N Paterson, Michael A Williams, Peter Passmore, Giuliana Silvestri, Tom J MacGillivray, Alexander P Maxwell, Gareth J McKay
BACKGROUND: Alzheimer's disease (AD) prevalence is increasing globally and typically progresses for several years prior to clinical presentation of dementia. Renal dysfunction and vascular disease have been reported in association with dementia in several cross-sectional and longitudinal studies, and may contribute to AD risk. Experimental and observational studies suggest amyloid-β (Aβ) clearance may be impaired in chronic kidney disease (CKD) indicating a mechanism for increased AD risk...
October 11, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29036427/impact-of-achieved-blood-pressure-on-renal-function-decline-and-first-stroke-in-hypertensive-patients-with-chronic-kidney-disease
#7
Youbao Li, Min Liang, Chongfei Jiang, Guobao Wang, Jianping Li, Yan Zhang, Fangfang Fan, Ningling Sun, Yiming Cui, Mingli He, Genfu Tang, Delu Yin, Xiaoshu Cheng, Binyan Wang, Yong Huo, Xin Xu, Fan Fan Hou, Xiping Xu, Xianhui Qin
Background: The effect of achieved blood pressure (BP) on first stroke and renal function decline among hypertensive patients with mild to moderate chronic kidney disease (CKD) is still uncertain. Methods: In total, 3230 hypertensive patients with estimated glomerular filtration rate 30-60 mL/min/1.73 m 2 and/or proteinuria were included in the present analyses. Eligible participants were randomly assigned to a daily treatment of a combined enalapril 10 mg and folic acid 0...
September 19, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29036269/longitudinal-blood-pressure-changes-and-kidney-function-decline-in-persons-without-chronic-kidney-disease-findings-from-the-mesa-study
#8
Gregory L Judson, Anna D Rubinsky, Michael G Shlipak, Ronit Katz, Holly Kramer, David R Jacobs, Michelle C Odden, Carmen A Peralta
Background: While changes in blood pressure (BP) are independently associated with cardiovascular events, less is known about the association between changes in BP and subsequent changes in renal function in adults with an estimated glomerular filtration rate (eGFR) of > 60 ml/min/1.73 m2. Methods: The present study included 3,920 participants in the Multi-Ethnic Study of Atherosclerosis (MESA) study who had ≥2 BP measurements during the first 5 years of MESA and had eGFR measurements at both year 5 and 10...
October 5, 2017: American Journal of Hypertension
https://www.readbyqxmd.com/read/29036210/isothermal-amplification-of-environmental-dna-edna-for-direct-field-based-monitoring-and-laboratory-confirmation-of-dreissena-sp
#9
Maggie R Williams, Robert D Stedtfeld, Cathrine Engle, Paul Salach, Umama Fakher, Tiffany Stedtfeld, Erin Dreelin, R Jan Stevenson, Jo Latimore, Syed A Hashsham
Loop-mediated isothermal amplification (LAMP) of aquatic invasive species environmental DNA (AIS eDNA) was used for rapid, sensitive, and specific detection of Dreissena sp. relevant to the Great Lakes (USA) basin. The method was validated for two uses including i) direct amplification of eDNA using a hand filtration system and ii) confirmation of the results after DNA extraction using a conventional thermal cycler run at isothermal temperatures. Direct amplification eliminated the need for DNA extraction and purification and allowed detection of target invasive species in grab or concentrated surface water samples, containing both free DNA as well as larger cells and particulates, such as veligers, eggs, or seeds...
2017: PloS One
https://www.readbyqxmd.com/read/29035939/predictors-for-the-development-of-microalbuminuria-and-interaction-with-renal-function
#10
Christos Chatzikyrkou, Jan Menne, Joseph Izzo, Giancarlo Viberti, Ton Rabelink, Luis M Ruilope, Christian Rump, Peter R Mertens, Hermann Haller
AIM: It is important to know which factors predict the development of microalbuminuria in patients with diabetes mellitus type II. MATERIAL: Data from the Randomized Olmesartan and Diabetes Microalbuminuria Prevention Study were used to identify predictors for the new onset of microalbuminuria. Furthermore, the interaction of baseline albuminuria and baseline estimated glomerular filtration rate (eGFR) and the effects of treatment with olmesartan were investigated...
October 13, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/29035804/green-electrospun-and-crosslinked-poly-vinyl-alcohol-poly-acrylic-acid-composite-membranes-for-antibacterial-effective-air-filtration
#11
Miaomiao Zhu, Dawei Hua, Hui Pan, Fei Wang, Bella Manshian, Stefaan J Soenen, Ranhua Xiong, Chaobo Huang
Air pollution has become a major environmental concern given the ever increasing levels of particulate matter (PM) and the increased in treatment-resistant bacterial and viral strains. Major efforts are therefore required into the development of air filtration and purification technology as well as novel, alternative antiviral and antibacterial treatment modalities. Here, we report an environmentally friendly method for the generation of multifunctional poly(vinyl alcohol)/poly(acrylic acid) (PVA-PAA) composite membranes via green electrospinning and thermal crosslinking...
October 9, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29035797/effects-of-gac-layer-on-the-performance-of-gravity-driven-membrane-filtration-gdm-system-for-rainwater-recycling
#12
An Ding, Jinlong Wang, Dachao Lin, Rong Zeng, Shengping Yu, Zhendong Gan, Nanqi Ren, Guibai Li, Heng Liang
Gravity-driven membrane filtration (GDM) is promising for decentralized rainwater recycling, owing to low maintenance and energy consumption. However, the organic removal by GDM process is sometimes undesirable and the quality of the permeate cannot meet the standard of water reuse. To improve this, granular activate carbon (GAC) was added as a particle layer on the membrane surface of GDM system. Additionally, a system with sand addition and a system with no particle addition were trialed as comparisons, to study the combined effects of particle hindering and adsorption on the removal efficacy of organics and the development of permeate flux...
October 7, 2017: Chemosphere
https://www.readbyqxmd.com/read/29035769/transport-and-long-term-release-behavior-of-polymer-coated-silver-nanoparticles-in-saturated-quartz-sand-the-impacts-of-input-concentration-grain-size-and-flow-rate
#13
Jun Hou, Mingzhi Zhang, Peifang Wang, Chao Wang, Lingzhan Miao, Yi Xu, Guoxiang You, Bowen Lv, Yangyang Yang, Zhilin Liu
This study investigated the transport and long-term release of stabilized poly vinylpyrrolidone-coated silver nanoparticles (PVP-AgNPs) in a quartz sand column with various sand grain sizes (0.3-0.5 μm, 0.5-1.0 μm, 1.0-2.0 μm), input concentrations of PVP-AgNP solution (1, 5, 15, 25 mg/L), and flow rates corresponding to a filter velocities (1.0, 1.5, 2.0, 2.5 mL/min-0.14, 0.21, 0.28, 0.35 cm/min) by determining breakthrough curves, retention profiles, and long-term release curves. Breakthrough curves and retention profiles were simulated by a mathematical model based on the advection dispersion equation coupled with second-order kinetics...
October 9, 2017: Water Research
https://www.readbyqxmd.com/read/29035523/current-stormwater-harvesting-guidelines-are-inadequate-for-mitigating-risk-from-campylobacter-during-non-potable-reuse-activities
#14
Heather Murphy, Ze Meng, Rebekah Henry, Ana Deletic, David Mccarthy
Campylobacter is a pathogen frequently detected in urban stormwater worldwide. It is one of the leading causes of enteric disease in many developed countries and is the leading cause of enteric disease in Australia. Prior to harvesting stormwater, adequate treatment is necessary to mitigate risks derived from such harmful pathogens. The goal of this research was to estimate the health risks associated with the exposure to Campylobacter when harvesting urban stormwater for toilet flushing and irrigation activities, and the role treatment options play in limiting risks...
October 16, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29035196/thyroid-function-in-patients-on-continuous-ambulatory-peritoneal-dialysis-in-comparison-with-chronic-kidney-disease%C3%A2
#15
Toru Sanai, Akinori Nagashima, Ken Okamura, Shuichi Rikitake, Makoto Fukuda, Koji Onozawa, Mai Sanematsu, Tsuyoshi Takashima, Motoaki Miyazono, Yuji Ikeda
BACKGROUND/METHODS: Thyroid function was evaluated in 14 Japanese patients on continuous ambulatory peritoneal dialysis (CAPD) with end-stage renal disease compared with 11 chronic kidney disease (CKD) stage 1+2 patients (glomerular filtration rate ≥ 60 mL/min/1.73m2). RESULTS: The serum free triiodothyronine (fT3) (2.2 ± 0.3 pg/mL, p < 0.05) levels were lower, and the rate of low triiodothyronine (T3) syndrome was higher (4 of 13 cases, 30.8%) in the CAPD patients than in the CKD stage 1+2 patients (1 of 10 cases, 10...
October 16, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/29035195/effects-of-fasting-during-the-month-of-ramadan-on-renal-function-in-patients-with-autosomal-dominant-polycystic-kidney-disease%C3%A2
#16
Iskender Ekinci, Reha Erkoc, Meltem Gursu, Elif Ece Dogan, Elif Kilic, Egemen Cebeci, Savas Ozturk, Rumeyza Kazancioglu
BACKGROUND: In this study, we aimed to examine the impact of fasting during the month of Ramadan on autosomal dominant polycystic kidney disease (-ADPKD) patients with normal to near-normal glomerular filtration rate (GFR). MATERIALS AND METHODS: This was a prospective observational study of patients with ADPKD, the majority of whom had normal or near-normal GFR. Patients were divided into two groups: the fasting group (FG) and the nonfasting group (NFG). Assessments in the NFG were performed 1 week before and 1 month after Ramadan, while FG patients were assessed on the last day of fasting in addition to the abovementioned visits...
October 16, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/29035193/renal-outcome-in-iga-nephropathy-according-to-oxford-classification-and-ultrastructural-analysis-in-a-brazilian-center%C3%A2
#17
Giovana Mariani, Leandro L L Freitas, Ricardo L Zollner, Maria Almerinda V F Ribeiro Alves
AIMS: Correlate clinical and histologic features with renal outcome in patients with biopsy-proven IgA nephropathy (IgAN). MATERIALS AND METHODS: Retrospective analysis of records and renal tissue of IgAN patients. Histology was revised according to MEST score of Oxford classification. Focal segmental glomerulosclerosis (FSGS) features were assessed by light microscopy. Electron microscopy review searched for podocyte effacement. RESULTS: 67 patients were included, 56...
October 16, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/29035041/purification-and-characterization-of-a-novel-%C3%AE-cypermethrin-degrading-aminopeptidase-from-pseudomonas-aeruginosa-gf31
#18
Ai-Xing Tang, Hu Liu, You-Yan Liu, Qing-Yun Li, Yi-Ming Qing
In this study, a novel β-cypermethrin-degrading enzyme was isolated and purified by 32.8 fold from the extracellular cell-free filtrate of Pseudomonas aeruginosa GF31with the protein recovery of 26.6%. The molecular mass of the enzyme was determined to be 53 kDa. The optimum temperature for the activity was surprisingly 60 °C and moreover, the purified enzyme showed a good pH- stability, maintaining over 85% of its initial activity in the pH 5.0-9.0 range. Most of the common metal ions exhibited little influence on the activity except for Hg2+, Ag+ and Cu2+...
October 16, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29034563/heart-failure-study-of-multipoint-pacing-effects-on-ventriculoarterial-coupling-rationale-and-design-of-the-humvee-trial
#19
Christina Chrysohoou, Polychronis Dilaveris, Christos-Konstantinos Antoniou, Ioannis Skiadas, Konstantinos Konstantinou, Konstantinos Gatzoulis, Ioannis Kallikazaros, Dimitrios Tousoulis
Cardiac resynchronization therapy (CRT) is an established therapy for symptomatic heart failure (HF). Unfortunately, many recipients remain nonresponders. Studies have revealed the potential role of multipoint pacing (MPP) in improving response and outcomes. The aim of this study is to compare the effects of MPP against those of standard biventricular pacing (BVP) on (i) ventriculoarterial coupling (VAC) and energy efficiency of the failing heart, (ii) diastolic function, (iii) quality of life, and (iv) NT-proBNP levels and glomerular filtration rate (GFR) during a follow-up of 13 months...
October 15, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/29034514/measurement-of-murine-single-kidney-glomerular-filtration-rate-using-dynamic-contrast-enhanced-mri
#20
Kai Jiang, Hui Tang, Prasanna K Mishra, Slobodan I Macura, Lilach O Lerman
PURPOSE: To develop and validate a method for measuring murine single-kidney glomerular filtration rate (GFR) using dynamic contrast-enhanced MRI (DCE-MRI). METHODS: This prospective study was approved by the Institutional Animal Care and Use Committee. A fast longitudinal relaxation time (T1 ) measurement method was implemented to capture gadolinium dynamics (1 s/scan), and a modified two-compartment model was developed to quantify GFR as well as renal perfusion using 16...
October 16, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
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