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https://www.readbyqxmd.com/read/29778073/non-selective-rapid-electro-oxidation-of-persistent-refractory-vocs-in-industrial-wastewater-using-a-highly-catalytic-and-dimensionally-stable-irpd-ti-composite-electrode
#1
Wan-Cheol Cho, Kyung-Min Poo, Hend Omar Mohamed, Tae-Nam Kim, Yul-Seong Kim, Moon Hyun Hwang, Do-Won Jung, Kyu-Jung Chae
Volatile organic compounds (VOCs) are highly toxic contaminants commonly dissolved in industrial wastewater. Therefore, treatment of VOC-containing wastewater requires a robust and rapid reaction because liquid VOCs can become volatile secondary pollutants. In this study, electro-oxidation with catalytic composite dimensionally stable anodes (DSAs)-a promising process for degrading organic pollutants-was applied to remove various VOCs (chloroform, benzene, toluene, and trichloroethylene). Excellent treatment efficiency of VOCs was demonstrated...
May 11, 2018: Chemosphere
https://www.readbyqxmd.com/read/29778056/one-century-sedimentary-record-of-heavy-metal-pollution-in-western-taihu-lake-china
#2
Yan Li, Shenglu Zhou, Qing Zhu, Baojie Li, Junxiao Wang, Chunhui Wang, Lian Chen, Shaohua Wu
Long-term trends of sediment compositions are important for assessing the impact of human activities on the sediment and protecting the sediment environment. In this study, based on the contents of heavy metals and the Pb isotope ratios in lake sediments, atmospheric dustfall and soil in Yixing, China, the representative heavy metals (Zn, Pb, Cr and Cd) in lake sediments from western Taihu Lake were studied. The evolution history of heavy metals in the local environment was constructed for the past 100 years...
May 16, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29778047/source-identification-and-spatial-distribution-of-arsenic-and-heavy-metals-in-agricultural-soil-around-hunan-industrial-estate-by-positive-matrix-factorization-model-principle-components-analysis-and-geo-statistical-analysis
#3
Xiaowen Zhang, Shuai Wei, Qianqian Sun, Syed Abdul Wadood, Boli Guo
Characterizing the distribution and defining potential sources of arsenic and heavy metals are the basic preconditions for reducing the contamination of heavy metals and metalloids. 71 topsoil samples and 61 subsoil samples were collected by grid method to measure the concentration of cadmium (Cd), arsenic (As), lead (Pb), copper (Cu), zinc (Zn), nickel (Ni) and chromium (Cr). Principle components analysis (PCA), GIS-based geo-statistical methods and Positive Matrix Factorization (PMF) were applied. The results showed that the mean concentrations were 9...
May 16, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29778035/formation-of-contact-active-antimicrobial-surfaces-by-covalent-grafting-of-quaternary-ammonium-compounds
#4
REVIEW
Poverenov Elena, Klein Miri
Different synthetic strategies for the formation of contact active antimicrobial materials utilizing covalent linkage of quaternary ammonium compounds (QACs) were reviewed. There is a demand to find methods that will prevent bacterial fouling without the release of antimicrobial agents, because biocides cause environment pollution and promote the development of bacteria resistance mechanisms. The contact active antimicrobial surfaces may provide a useful tool for this purpose. The covalent surface grafting of QACs seems to be a feasible and promising approach for the formation of safe and effective antimicrobial materials that could be utilized for medical devices, food industry, water treatment systems and other applications...
May 16, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29778023/the-growth-and-lipid-accumulation-of-scenedesmus-quadricauda-during-batch-mixotrophic-heterotrophic-cultivation-using-xylose-as-a-carbon-source
#5
Mingming Song, Haiyan Pei
To overcome the bottlenecks of high cost and low production yields that restrict the commercial production of microalgae biodiesel, the use of xylose was evaluate by Scenedesmus quadricauda FACHB-1297, which was shown to be capable of mixotrophic and heterotrophic growth and lipid production on xylose, rich in the waste streams from pulp and paper industry, with increases in lipid productivities of 35.8-fold (mixotrophic) and 9.2-fold (heterotrophic) in comparison to photoautotrophic lipid yields. Five doses of xylose were tested to determine the effects and mechanisms of the carbon source on microalgae in mixotrophic mode...
May 10, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29778012/reactive-oxygen-species-ros-activity-of-ambient-fine-particles-pm-2-5-measured-in-seoul-korea
#6
Jieun Park, Eun Ha Park, James J Schauer, Seung-Muk Yi, Jongbae Heo
Substantial increase in level of particulate matter has raised concerns in South Korea recently. Ambient particulate matter is classified as Group I carcinogen (IARC, 2013) and multiple epidemiological studies has demonstrated adverse health effects due to exposure of particulate matter. Fine particulate matter (PM2.5 ) which has a diameter <2.5 μm is likely to penetrate deeply into lung and is known to be eliciting adverse health effects. A number of epidemiological studies have been conducted on adverse health effects of PM-related diseases and mortality rate, yet particulate matter (PM)-induced reactive oxygen species (ROS) activity at the cellular level has not been actively studied in Korea...
May 16, 2018: Environment International
https://www.readbyqxmd.com/read/29777922/pfoa-and-ulcerative-colitis
#7
Kyle Steenland, Subra Kugathasan, Dana Boyd Barr
INTRODUCTION: PFOA (perfluoroctanoic acid) is a perfluoroalkyl substance (PFAS). Although use in the US has been phased out, PFOA persists indefinitely in the environment, and is present in the serum of virtually all people in industrialized countries. Approximately 6 million Americans drink water comtaminated with PFOA above EPA-recommended levels. In a previous cohort study (n = 32,000), we found a strong positive exposure-response relation between PFOA serum levels and subsequent ulcerative colitis (UC) in a high-exposed population from the mid-Ohio valley, but no association with Crohn's disease...
May 16, 2018: Environmental Research
https://www.readbyqxmd.com/read/29777855/polymer-lipid-hybrid-nanoparticles-as-enhanced-indomethacin-delivery-systems
#8
Annalisa Dalmoro, Sabrina Bochicchio, Shamil F Nasibullin, Paolo Bertoncin, Gaetano Lamberti, Anna Angela Barba, Rouslan I Moustafine
Non-steroidal anti-inflammatory drugs (NSAIDs), i.e. indomethacin used for rheumatoid arthritis and non-rheumatoid inflammatory diseases, are known for their injurious actions on the gastrointestinal (GI) tract. Mucosal damage can be avoided by using nanoscale systems composed by a combination of liposomes and biodegradable natural polymer, i.e. chitosan, for enhancing drug activity. Aim of this study was to prepare chitosan-lipid hybrid delivery systems for indomethacin dosage through a novel continuous method based on microfluidic principles...
May 16, 2018: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29777804/towards-an-affordable-enzymatic-production-of-biopolyols-comparing-the-immobilization-of-lipases-by-two-optimized-techniques
#9
Milda Šulcienė, Boris Kolvenbach, Erik Ammann, Inga Matijošytė
The production of biopolyols (sustainable, renewable and biodegradable precursors), is exclusively focused on the conventional chemical synthesis pathways, and currently, no polyols are produced by enzymatic processes at an industrial scale, because they are not competitive when compared to petrochemically based polyols due to the overall cost for their production. This can be mainly attributed to the high costs of commercial enzymes used in this process and their use is limited by their lack of stability during the bioprocess...
May 16, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29777759/plant-nutraceuticals-as-antimicrobial-agents-in-food-preservation-terpenoids-polyphenols-and-thiols
#10
REVIEW
Ignacio Gutiérrez-Del-Río, Javier Fernández, Felipe Lombó
Synthetic food additives generate a negative perception in consumers. Therefore, food manufacturers search for safer natural alternatives as those involving phytochemicals and plant essential oils. These bioactives have antimicrobial activities widely proved in in vitro tests. Foodborne diseases cause thousands of deaths and millions of infections every year, mainly due to pathogenic bacteria as Salmonella spp., Campylobacter spp., Escherichia coli, Bacillus cereus, Listeria monocytogenes or Staphylococcus aureus...
May 16, 2018: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/29777614/enhancing-the-detection-of-injuries-and-near-misses-among-patient-care-staff-in-a-large-pediatric-hospital
#11
Maurizio Macaluso, Lauren A Summerville, Meredith E Tabangin, Nancy M Daraiseh
Objectives Compared to other industries, healthcare has one of the highest rates of non-fatal occupational injury/illness. Evidence indicates these rates are underestimated, highlighting the need for improved injury surveillance. This study aims to demonstrate the feasibility of integrating active data collection in a passive injury surveillance system to improve detection of injuries in a healthcare establishment. Methods Using digital voice recorders (DVR), pediatric healthcare providers prospectively recorded events throughout their shift for two weeks...
May 7, 2018: Scandinavian Journal of Work, Environment & Health
https://www.readbyqxmd.com/read/29777591/bioengineering-triacetic-acid-lactone-production-in-yarrowia-lipolytica-for-pogostone-synthesis
#12
James Yu, Jenny Landberg, Farbod Shavarebi, Virginia Bilanchone, Adam Okerlund, Umayangani Wanninayake, Le Zhao, George Kraus, Suzanne Sandmeyer
Yarrowia lipolytica is an oleaginous yeast that is recognized for its ability to accumulate high levels of lipids, which can serve as precursors to biobased fuels and chemicals. Polyketides such as triacetic acid lactone (TAL) can also serve as a precursor for diverse commodity chemicals. This study used Y. lipolytica as a host organism for the production of TAL via expression of the 2-pyrone synthase gene from Gerbera hybrida. Induction of lipid biosynthesis by nitrogen-limited growth conditions increased TAL titers...
May 19, 2018: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/29777574/factors-influencing-the-umbilical-cord-blood-stem-cell-industry-an-evolving-treatment-landscape
#13
REVIEW
Carla Dessels, Marco Alessandrini, Michael Sean Pepper
Hematopoietic stem cell transplantation (HSCT) is common practice today for life threatening malignant and non-malignant diseases of the blood and immune systems. Umbilical cord blood (UCB) is rich in hematopoietic stem cells (HSCs) and is an attractive alternative to harvesting HSCs from bone marrow or when mobilized into peripheral blood. One of the most appealing attributes of UCB is that it can be banked for future use and hence provides an off-the-shelf solution for patients in urgent need of a transplantation...
May 18, 2018: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/29777363/high-level-production-of-single-chain-monellin-mutants-with-enhanced-sweetness-and-stability-in-tobacco-chloroplasts
#14
Daniela Castiglia, Serena Leone, Rachele Tamburino, Lorenza Sannino, Jole Fonderico, Chiara Melchiorre, Andrea Carpentieri, Stefania Grillo, Delia Picone, Nunzia Scotti
Plastid-based MNEI protein mutants retain the structure, stability and sweetness of their bacterial counterparts, confirming the attractiveness of the plastid transformation technology for high-yield production of recombinant proteins. The prevalence of obesity and diabetes has dramatically increased the industrial demand for the development and use of alternatives to sugar and traditional sweeteners. Sweet proteins, such as MNEI, a single chain derivative of monellin, are the most promising candidates for industrial applications...
May 18, 2018: Planta
https://www.readbyqxmd.com/read/29777296/polymersomes-as-nanoreactors-for-preparative-biocatalytic-applications-current-challenges-and-future-perspectives
#15
REVIEW
Ludwig Klermund, Kathrin Castiglione
Polymersomes are hollow, spherical vesicles that are surrounded by a polymer membrane. The applied polymer must be amphiphilic to promote self-assembly in aqueous solution. At the same time, the polymer composition is highly versatile, which leads to diverse properties in terms of chemical and mechanical stability, membrane permeability and the ability to functionalize the membrane. By encapsulating chemical or biological substances within the polymersomes, drug delivery systems, cell mimetics or catalytic nanoreactors can be assembled...
May 17, 2018: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/29777161/genetic-diversity-analysis-reveals-genetic-differentiation-and-strong-population-structure-in-calotropis-plants
#16
Nkatha G Muriira, Alice Muchugi, Anmin Yu, Jianchu Xu, Aizhong Liu
The genus Calotropis (Asclepiadaceae) is comprised of two species, C. gigantea and C. procera, which both show significant economic potential for use of their seed fibers in the textile industry, and of their bioactive compounds as new medicinal resources. The available wild-sourced germplasm contains limited genetic information that restricts further germplasm exploration for the purposes of domestication. We here developed twenty novel EST-SSR markers and applied them to assess genetic diversity, population structure and differentiation within Calotropis...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29777094/biological-monitoring-and-lung-function-assessment-among-workers-exposed-to-chromium-in-the-ceramic-industry
#17
Fatemeh Kargar Shouroki, Seyed Jamaleddin Shahtaheri, Farideh Golbabaei, Abolfazle Barkhordari, Abbas Rahimi-Froushani
BACKGROUND: Chromium exposure occurs in various industries such as ceramics industry. The main disadvantage of chromium is high toxicity when absorbed by the body. This study aimed to determine and compare urinary chromium values in the pre- and post-shift of ceramic glazers and the control group; investigate urinary chromium value according to the study variables; compare pulmonary function tests between ceramic glazers vs. the control group. STUDY DESIGN: A cross-sectional study...
March 19, 2018: Journal of Research in Health Sciences
https://www.readbyqxmd.com/read/29776927/ecological-engineering-helps-maximize-function-in-algal-oil-production
#18
Sara L Jackrel, Anita Narwani, Bastian Bentlage, Robert B Levine, David C Hietala, Phillip E Savage, Todd H Oakley, Vincent J Denef, Bradley J Cardinale
Algal biofuels have the potential to curb emissions of greenhouse gases from fossil fuels, but current growing methods fail to produce fuels that meet the multiple standards necessary for economical industrial use. For example, algae grown as monocultures for biofuel production have not simultaneously and economically achieved high yields of the high-quality, lipid-rich biomass desired for the industrial-scale production of bio-oil. Decades of study in the field of ecology have demonstrated that simultaneous increases in multiple functions, such as the quantity and quality of biomass, can occur in natural ecosystems by increasing biological diversity...
May 18, 2018: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29776721/process-water-properties-from-hydrothermal-carbonization-of-chemical-sludge-from-a-pulp-and-board-mill
#19
Mikko Mäkelä, Julia Forsberg, Christer Söderberg, Sylvia H Larsson, Olli Dahl
Hydrothermal carbonization (HTC) can be used to break down sludge structure and generate carbonaceous hydrochar suitable for solid fuel or value-added material applications. The separation of char and the reaction medium however generates a filtrate, which needs to treated before potential discharge. Thus, this work determined filtrate properties based on HTC temperature and sludge moisture content and estimated the discharge emissions and the potential increase in analyte loads to an industrial wastewater treatment plant based on derived regression models...
May 15, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29776695/-radiology-a-7-year-analysis-of-radiology-associated-hashtags
#20
Jacob J Bundy, Anthony N Hage, Jeffrey Forris Beecham Chick, Rajiv N Srinivasa, Nishant Patel, Evan Johnson, Joseph J Gemmete, Ravi N Srinivasa
PURPOSE: To describe the radiology-related Twitter network through the analysis of the most commonly used radiology-associated hashtags. MATERIALS AND METHODS: A total of 959,366 tweets containing the hashtags from the 9 most commonly used radiology-associated hashtags composed by 66,568 Twitter users from October 13, 2010 to February 22, 2018 were analyzed. Twitter activity metrics, engagement, user characteristics, content analysis, and network analysis were obtained using the health care social media analytics platform, Symplur Signals...
April 17, 2018: Current Problems in Diagnostic Radiology
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