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https://www.readbyqxmd.com/read/29793207/infectivity-reduction-efficacy-of-uv-irradiation-and-peracetic-acid-uv-combined-treatment-on-ms2-bacteriophage-and-murine-norovirus-in-secondary-wastewater-effluent
#1
ShihChi Weng, Nathan Dunkin, Kellogg J Schwab, James McQuarrie, Kati Bell, Joseph G Jacangelo
Peracetic acid (PAA) is a strong oxidant/bactericide that has been applied in various industries (e.g., food processing, pharmaceuticals, medical device sterilization, etc.) as a disinfectant. There is increasing interest in using PAA for wastewater disinfection because it does not form halogenated byproducts, and no post-treatment quenching is required. Previous studies have demonstrated good efficiency in controlling bacteria in wastewater, but limited information is available for viruses, especially those hosted by mammals (e...
May 21, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29793205/comprehensive-assessment-of-three-typical-antibiotics-on-cyanobacteria-microcystis-aeruginosa-the-impact-and-recovery-capability
#2
Yingxiang Du, Jing Wang, Fengyi Zhu, Dina Mai, Zhongrun Xiang, Jianqiu Chen, Ruixin Guo
This innovative study provided a comprehensive evaluation of the effects of three typical antibiotics exposures (cefradine, norfloxacin and amoxicillin) on Microcystis aeruginosa in two periods (exposure and post-exposure) at a new perspective. The results indicated that the irreversible growth inhibition of M. aeruginosa attributed to the norfloxacin in the exposure and the re-exposure stages. In contrast, although the algal cell size recovered to the control level after the exposure of 20 mg/L of cefradine, the significant stimulation on glutathione (GSH) still persisted even if the contaminants were removed...
May 21, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29793198/assessment-of-cu-sub-lethal-toxicity-lc-50-in-the-cold-water-gorgonian-dentomuricea-meteor-under-a-deep-sea-mining-activity-scenario
#3
Inês Martins, António Godinho, Joana Goulart, Marina Carreiro-Silva
Previous aquaria-based experiments have shown dissolution and leaching of metals, especially copper (Cu), from the simulated sediment plumes generated during mining activities resulting in a pronounced increase of Cu contamination in the surrounding seawater. Metals are bioavailable to corals with food, through ingestion (particulate phase) and through tissue-facilitated transport (passive diffusion). With corals being particularly vulnerable to metal contamination, resuspension of metal-bearing sediments during mining activities represents an important ecological threat...
May 21, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29793161/exposure-of-microcystis-aeruginosa-to-hydrogen-peroxide-and-titanium-dioxide-under-visible-light-conditions-modeling-the-impact-of-hydrogen-peroxide-and-hydroxyl-radical-on-cell-rupture-and-microcystin-degradation
#4
Che-Wei Chang, Xiangchen Huo, Tsair-Fuh Lin
The aims of this study are to evaluate, under visible light conditions, the ability of H2 O2 and TiO2 to produce OH, their quantitative impacts on the cell integrity of Microcystis, and the subsequent release and degradation of microcystins (MCs). A sequential reaction model was developed, including one sub-model to simulate the rupture kinetics for cell integrity of Microcystis, and another to describe the release and degradation of MCs. For cell rupture, the dual-oxidant Delayed Chick-Watson model (DCWM) and dual-oxidant Hom model (HM) were first proposed and developed, giving excellent simulation results of cell rupture kinetics...
May 14, 2018: Water Research
https://www.readbyqxmd.com/read/29793159/impacts-of-groundwater-management-on-energy-resources-and-greenhouse-gas-emissions-in-california
#5
Thomas P Hendrickson, Maya Bruguera
California faces significant energy and water infrastructure planning challenges in response to a changing climate. Immediately following the most severe recorded drought, the state experienced one of its wettest water years in recorded history. Despite the recent severe wet weather, much of the state's critical groundwater systems have not recovered from the drought. The recent Sustainable Groundwater Management Act (SGMA) aims to eliminate future depletion risks, but may force California basins to seek alternative water sources by limiting groundwater withdrawals during droughts...
May 16, 2018: Water Research
https://www.readbyqxmd.com/read/29793156/mechanical-properties-of-the-human-scalp-in-tension
#6
Lisa Falland-Cheung, Mario Scholze, Pamela F Lozano, Benjamin Ondruschka, Darryl C Tong, Paul A Brunton, J Neil Waddell, Niels Hammer
Mechanical properties of the human scalp have not been investigated to a great extent with limited information available. The purpose of this study was to provide new baseline material data for human scalp tissue of various ages, which can be applied to experimental and constitutive models, such as in the area of impact biomechanics. This study used specimens from the left and right temporal, fronto-parietal and occipital regions of the human scalp. It investigated the tensile behavior of scalp tissue using tissues harvested from unfixed, fresh cadavers...
May 17, 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29793148/post-traumatic-stress-symptom-development-as-a-function-of-changing-witnessing-in-home-violence-and-changing-peer-post-traumatic-stress-symptom-development-as-a-function-of-changing-witnessing-in-home-violence-and-changing-peer-relationship-quality-evaluating
#7
Aura A Mishra, Sharon L Christ, Laura M Schwab-Reese, Nayantara Nair
In the present study, witnessing in-home violence and peer relationship quality are evaluated as to their relative impact on Post Traumatic Stress (PTS) symptoms among children aged 8 to 17 investigated by child protective services (CPS) for maltreatment exposure. The sample included 2151 children from the National Survey of Child and Adolescent Well-Being II (NSCAW II). Linear growth models were estimated to assess associations between changes in PTS symptoms, witnessing in-home violence, and peer relationship quality over time...
May 21, 2018: Child Abuse & Neglect
https://www.readbyqxmd.com/read/29793140/effectiveness-of-a-voluntary-family-befriending-service-a-mixed-methods-evaluation-using-the-donabedian-model
#8
S V Gentry, E F J Powers, N Azim, M Maidrag
OBJECTIVES: Voluntary befriending schemes operate in many countries, promoting public health by supporting vulnerable individuals and families. Use of third sector and voluntary services to complement health and social care provision is increasingly important globally in the context of economic and demographic challenges, but the evidence base around such collaborations is limited. This article reports the results of operational evaluation research seeking to use robust routine work to generate transferable findings for use by those commissioning and providing services...
May 21, 2018: Public Health
https://www.readbyqxmd.com/read/29793136/effects-of-gestational-hypertension-and-pre-eclampsia-in-mrna-expression-of-fibrinolysis-genes-in-primary-cultured-human-umbilical-vein-endothelial-cells
#9
Irais Poblete-Naredo, Yury Rodríguez-Yáñez, Rogelio O Corona-Núñez, Stuart González-Monroy, Juan E Salinas, Arnulfo Albores
Hypertension disorders (HD) and pre-eclampsia (PRE) are leading causes of maternal deaths worldwide. PRE is associated with vascular endothelial dysfunction and with deregulation of the fibrinolysis pathway genes. Fibrinolysis is the fibrin clot hydrolysis process catalyzed by plasmin, a proteolytic enzyme formed from plasminogen. Plasminogen is cleaved by tissue-type (tPA) and urokinase-type (uPA) activators and inhibited by the plasminogen activator inhibitors type-1 (PAI-1) and type-2 (PAI-2). The whole process maintains blood hemostasis...
May 17, 2018: Thrombosis Research
https://www.readbyqxmd.com/read/29793130/anxiety-memories-and-coping-in-patients-undergoing-intracranial-tumor-surgery
#10
Tom J van Ark, Markus Klimek, Peter de Smalen, Arnaud J P E Vincent, Robert Jan Stolker
OBJECTIVES: The diagnosis and the surgical removal of a brain tumor can have serious impact on the quality of life of a patient. The question rises, whether having more or just less memories of the procedure is better for coping with such an event. Furthermore, for preoperative information of future patients it is important to know how patients process their emotions and memories. The primary objective of this study was to investigate the link between preoperative anxiety, the perioperative experience and the quantity and quality of postoperative memories in patients who underwent intracranial tumor surgery...
May 17, 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29793124/how-to-manage-patellofemoral-pain-understanding-the-multifactorial-nature-and-treatment-options
#11
Simon Lack, Bradley Neal, Danilo De Oliveira Silva, Christian Barton
Patellofemoral pain (PFP) is one of the most prevalent conditions within sports medicine, orthopaedic and general practice settings. Long-term treatment outcomes are poor, with estimates that more than 50% of people with the condition will report symptoms beyond 5 years following diagnosis. Additionally, emerging evidence indicates that PFP may be on a continuum with patellofemoral osteoarthritis. Consensus of world leading clinicians and academics highlights the potential benefit of delivering tailored interventions, specific to an individual's needs, to improve patient outcome...
April 12, 2018: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29793108/manganese-contamination-affects-the-motor-performance-of-wild-northern-quolls-dasyurus-hallucatus
#12
Ami Fadhillah Amir Abdul Nasir, Skye F Cameron, Amanda C Niehaus, Christofer J Clemente, Frank A von Hippel, Robbie S Wilson
Neuromotor deficits are an important sign of manganese (Mn) toxicity in humans and laboratory animals. However, the impacts of Mn exposure on the motor function of wild animals remains largely unknown. Here, we assessed the impact of chronic exposure to Mn from active mining operations on Groote Eylandt, Australia on the motor function of the semi-arboreal northern quoll (Dasyurus hallucatus), an endangered species. The three motor tests conducted-maximum sprint speed on a straight run, manoeuvrability around a corner, and motor control on a balance beam-showed that elevated Mn body burden did not diminish performance of these traits...
May 21, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29793088/decellularized-and-matured-esophageal-scaffold-for-circumferential-esophagus-replacement-proof-of-concept-in-a-pig-model
#13
Guillaume Luc, Guillaume Charles, Caroline Gronnier, Magali Cabau, Charlotte Kalisky, Mallory Meulle, Reine Bareille, Samantha Roques, Lionel Couraud, Johanna Rannou, Laurence Bordenave, Denis Collet, Marlène Durand
Surgical resection of the esophagus requires sacrificing a long portion of it. Its replacement by the demanding gastric pull-up or colonic interposition techniques may be avoided by using short biologic scaffolds composed of decellularized matrix (DM). The aim of this study was to prepare, characterize, and assess the in vivo remodeling of DM and its clinical impact in a preclinical model. A dynamic chemical and enzymatic decellularization protocol of porcine esophagus was set up and optimized. The resulting DM was mechanically and biologically characterized by DNA quantification, histology, and histomorphometry techniques...
May 17, 2018: Biomaterials
https://www.readbyqxmd.com/read/29793082/atmospheric-impacts-of-a-natural-gas-development-within-the-urban-context-of-morgantown-west-virginia
#14
Philip J Williams, Matthew Reeder, Natalie J Pekney, David Risk, John Osborne, Michael McCawley
The Marcellus Shale Energy and Environment Laboratory (MSEEL) in West Virginia provides a unique opportunity in the field of unconventional energy research. By studying near-surface atmospheric chemistry over several phases of a hydraulic fracturing event, the project will help evaluate the impact of current practices, as well as new techniques and mitigation technologies. A total of 10 mobile surveys covering a distance of approximately 1500 km were conducted through Morgantown. Our surveying technique involved using a vehicle-mounted Los Gatos Research gas analyzer to provide geo-located measurements of methane (CH4 ) and carbon dioxide (CO2 )...
May 21, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29793080/visualizing-the-shape-of-society-an-analysis-of-public-bads-and-burden-allocation-due-to-household-consumption-using-an-input-output-approach
#15
Andrew Chapman, Yosuke Shigetomi
This study investigates how our lifestyles can cause societal issue including a reduction in social equity due to the consumption of natural resources. Based on a range of household environmental footprints and their application to a quantitative social equity evaluation framework, a methodology is proposed which identifies the creation and origin of public bads within society. This research builds on the methodologies of energy policy sustainability evaluation incorporated with environmentally extended input output analysis in order to critically assess lifestyle-based consumption impacts, and to quantify the allocation of subsequent burdens across generations...
May 21, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29793065/arsenic-removal-by-as-hyperaccumulator-pteris-vittata-from-two-contaminated-soils-a-5-year-study
#16
Evandro B da Silva, Jason T Lessl, Ann C Wilkie, Xue Liu, Yungen Liu, Lena Q Ma
The ability of As-hyperaccumulator Pteris vittata to remove As from two contaminated soils (CCA from an As-treated wood facility and DVA from a cattle-dipping vat) over 5 years was investigated for the first time. The goal was to evaluate P. vittata's ability to continuously remove As during 10 harvests and identify how soil As was affected by P. vittata under P-sufficient (P-fertilizer) and P-limiting (phosphate rock) conditions. Sequential extraction was used to determine changes in metal distribution among different soil fractions...
May 10, 2018: Chemosphere
https://www.readbyqxmd.com/read/29793064/industrial-waste-as-a-source-of-surface-and-groundwater-pollution-for-more-than-half-a-century-in-a-sector-of-the-r%C3%A3-o-de-la-plata-coastal-plain-argentina
#17
Lucía Santucci, Eleonora Carol, Carolina Tanjal
Environmental liabilities have become one of the most important problems of the last years, especially those of contaminated sites located in urban areas which have been abandoned by pollution intensive industries. Such sites may contain hazardous materials that pose risks to human health and the environment. Industrial waste from the ancient sulfuric acid industry is scattered in a local area at the petrochemical pole in a sector of the Río de la Plata coastal plain. The aim of this work is to define the geochemical processes that determine the alteration of waste in the old sulfuric acid industry (OSAI) area and to study the migration of soluble pollutants to groundwater...
May 14, 2018: Chemosphere
https://www.readbyqxmd.com/read/29793050/small-scale-managed-marine-areas-over-time-developments-and-challenges-in-a-local-fijian-reef-fishery
#18
Elodie Fache, Annette Breckwoldt
This paper investigates the Locally Managed Marine Area (LMMA) approach through looking at developments and challenges of community-based marine resource management over time, with a particular focus on Fiji in the South Pacific region. A diachronic perspective, based on two multi-method empirical studies, is used to exemplify the social complexities of the implementation of this LMMA approach in a specific island setting. This perspective connects local stakeholders' establishment and management of a LMMA covering their entire customary fishing rights area (iqoliqoli) with the national context articulated around the Fiji Locally Managed Marine Area (FLMMA) network, as well as with regional networking and international conservation dynamics...
May 21, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29793046/validation-of-the-revised-pam-score-in-patients-with-aml-undergoing-allogeneic-hematopoietic-stem-cell-transplantation
#19
Jan M Middeke, Frederike Kollinger, Henning Baldauf, Friedrich Stölzel, Martin Wermke, Malte von Bonin, Katja Sockel, Cornelia S Link, Raphael Teipel, Christoph Röllig, Christian Thiede, Uwe Platzbecker, Gerhard Ehninger, Martin Bornhäuser, Johannes Schetelig
PURPOSE: Despite recent advances, allogeneic hematopoietic stem cell transplantation (alloHSCT) continues to be accompanied by a high rate of morbidity and mortality. Several scores have been developed to predict outcome after HSCT. The PAM score has been recently revised, and utilizes information on patient age, donor type, disease risk, cytomegalovirus (CMV) serostatus of patients and donors, and the forced expiratory volume in one second (FEV1). The aim of this study was to analyze the predictive power of the PAM score in an independent, large cohort of acute myeloid leukemia (AML) patients...
May 21, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29793034/a-case-control-study-about-foetal-trauma-during-cesarean-delivery
#20
Enora Dolivet, Cécile Delesalle, Rémi Morello, Marie Blouet, Corinne Bronfen, Michel Dreyfus, Guillaume Benoist
OBJECTIVE: The caesarean section rate is gradually increasing in most countries. The frequency of occurrence of foetal injury per birth is estimated to 1%. The majority of these injuries presents a low functional impact, but remains responsible for a significant neonatal morbidity. Even though the foetal risk factors are well documented in cases of vaginal birth, they have not been accurately identified for cesarean section. The aim of this study is to identify the risk factors for neonatal fracture during caesarean section...
May 21, 2018: Journal of Gynecology Obstetrics and Human Reproduction
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