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https://www.readbyqxmd.com/read/29156513/production-and-characterization-of-keratinolytic-proteases-by-a-chicken-feather-degrading-thermophilic-strain-thermoactinomyces-sp-yt06
#1
Lin Wang, Yuting Qian, Yun Cao, Ying Huang, Zhizhou Chang, Hongying Huang
Thermoactinomyces sp. strain YT06 was isolated from poultry compost and observed to degrade integral chicken feathers at 60°C completely, resulting in the formation of 3.24 mg/mL of free amino acid from 50 mL of culture containing 10 g/L chicken feathers. Strain YT06 could grow and secret keratinase using feather as the only carbon and nitrogen sources without other supplement, but complementation of 10 g/L sucrose and 4 g/L NaNO₃ increased the production of the keratinolytic enzyme. The maximum protease activities obtained were 110 U/mL and keratinase were 42 U/mL...
November 21, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29156440/pharmaceutical-and-personal-care-products-induced-stress-symptoms-and-detoxification-mechanisms-in-cucumber-plants
#2
Chengliang Sun, Stacia Dudley, John Trumble, Jay Gan
Contamination of agricultural soils by pharmaceutical and personal care products (PPCPs) resulting from the application of treated wastewater, biosolids and animal wastes constitutes a potential environmental risk in many countries. To date a handful of studies have considered the phytotoxicity of individual PPCPs in crop plants, however, little is known about the effect of PPCPs as mixtures at environmentally relevant levels. This study investigated the uptake and transport, physiological responses and detoxification of a mixture of 17 PPCPs in cucumber seedlings...
November 17, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29156437/home-composting-using-different-ratios-of-bulking-agent-to-food-waste
#3
Lucas Lourenço Castiglioni Guidoni, Roger Vasques Marques, Rodrigo Bilhalva Moncks, Fabiana Torma Botelho, Matheus Francisco da Paz, Luciara Bilhalva Corrêa, Érico Kunde Corrêa
The negative environmental impacts associated with home composting may be due to the absence of a defined operation criteria for the degradation process. In addition to the potentially low environmental impact in terms of energy and water usage, which is minimal to the manufacture of the composting unit and avoiding the processing and transportation of waste or byproduct, composting at home can also promote a reduction in the emission of unpleasant gases. The proportion of the food waste and bulking agents in the composting mixture may be decisive to fulfill good practices of waste stabilization...
November 17, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/29156335/thyroid-disruption-and-reduced-mental-development-in-children-from-an-informal-e-waste-recycling-area-a-mediation-analysis
#4
Lian Liu, Bo Zhang, Kun Lin, Yuling Zhang, Xijin Xu, Xia Huo
This paper aims to evaluate the effects of thyroid disruption on the mental development of children. A total of 258 three-year-old children in Guiyu (e-waste-exposed group) and Nanao (reference group), China were examined. FT3, FT4, TSH, lead (BPb) and cadmium (BCd) in blood were determined, and cognitive and language scores of children were assessed based on the Bayley Scales of Infant Development III. Stepwise multiple regression was used to estimate the relationship between heavy metals and cognitive and language scores; mediation analysis was performed to determine whether thyroid disruption was mechanistically involved...
November 13, 2017: Chemosphere
https://www.readbyqxmd.com/read/29156263/application-of-biochar-from-food-and-wood-waste-as-green-admixture-for-cement-mortar
#5
Souradeep Gupta, Harn Wei Kua, Hui Jun Koh
Landfilling of food waste due to its low recycling rate is raising serious concerns because of associated soil and water contamination, and emission of methane and other greenhouse gases during the degradation process. This paper explores feasibility of using biochar derived from mixed food waste (FWBC), rice waste (RWBC) and wood waste (mixed wood saw dust, MWBC) as carbon sequestering additive in mortar. RWBC is prepared from boiled plain rice, while FWBC is prepared from combination of rice, meat, and vegetables in fixed proportion...
November 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29155968/novel-spiroplasma-spp-cultured-from-brains-and-lymph-nodes-from-ruminants-affected-with-transmissible-spongiform-encephalopathy
#6
Frank O Bastian, James Lynch, Sue Hagius, Xiaochu Wu, Greg McCormick, Donald G Luther, Philip H Elzer
Spiroplasma spp., tiny filterable wall-less bacteria, are consistently associated with the transmissible spongiform encephalopathies (TSE). Spiral forms have been transiently isolated from TSE-affected brain tissues in SP4 growth media designed for isolation of Spiroplasma spp., but the isolate could not be propagated in SP4 media. A bacterium must grow in vitro in cell-free cultures to allow full characterization of a suspect pathogen. Here, a novel Spiroplasma sp. was isolated from scrapie- and chronic wasting disease (CWD)-affected brains and lymph nodes...
November 15, 2017: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/29155771/endotracheal-intubation-of-rabbits-using-a-polypropylene-guide-catheter
#7
Krista L Thompson, Thomas R Meier, Jodi A Scholz
Endotracheal intubation in rabbits can be challenging due to their unusual anatomy. Achieving a patent airway during anesthesia is critical for the avoidance of airway obstruction, prevention of gastric tympany, and to allow ventilatory support. Due to the difficulty of intubation, alternative methods such as the use of laryngeal mask airways or laryngeal tubes have been explored. However, these methods do not result in direct access to the trachea and thus may present a risk for development of complications...
November 13, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29155574/mechanism-of-formation-of-chlorinated-pyrene-during-combustion-of-polyvinyl-chloride
#8
Yuichi Miyake, Masahiro Tokumura, Qi Wang, Takashi Amagai, Yuichi Horii, Kurunthachalam Kannan
Chlorinated polycyclic aromatic hydrocarbons (ClPAHs) are an emerging class of environmental contaminants, but the sources of ClPAHs in the environment are not well known. In this study, we developed a kinetic model describing the chlorination of PAHs to observe the mechanism of formation of ClPAHs during the combustion of organic waste containing chlorinated compounds and/or chloride in an incinerator. Pyrene (Pyr) and polyvinyl chloride (PVC) were selected as a model PAH and a model organic substrate, respectively...
November 20, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29155524/revisiting-trichloroethylene-contaminated-hazardous-waste-sites-after-new-science-indicates-the-need-for-a-lower-health-guideline
#9
Diane Jackson
No abstract text is available yet for this article.
June 2017: Journal of Environmental Health
https://www.readbyqxmd.com/read/29155405/kinnow-peel-extract-as-a-reducing-and-capping-agent-for-the-fabrication-of-silver-nps-and-their-biological-applications
#10
Sania Naz, Fahad Shams, Saira Tabassum, Ihsan Ul-Haq, Muhammad Ashraf, Muhammad Zia
An effective approach used for the synthesis of silver nanoparticles (AgNPs) through green chemistry by using Kinnow peel extract as a reducing and capping agent is presented. Two different approaches, diluted and concentrated peel extracts, were used for the synthesis of AgNPs. Ultraviolet-visible spectroscopy exhibits characteristic absorption peaks at 425 and 400 nm for nanoparticles (NPs) synthesised by diluted and concentrated extracts, respectively. The X-ray diffraction analysis of nanofabricated silver exhibited a pure face centred cubic structure of 27...
December 2017: IET Nanobiotechnology
https://www.readbyqxmd.com/read/29155329/cloning-and-characterization-of-two-novel-%C3%AE-glucosidase-genes-encoding-isoenzymes-of-the-cellobiase-complex-from-cellulomonas-biazotea
#11
Anthony K N Chan, Alan K L Ng, Kate K Y Ng, W K R Wong
Enzymatic degradation of cellulosic waste to generate renewable biofuels has offered an attractive solution to the energy problem. Synergistic hydrolysis of cellulose residues requires the participation of three different types of cellulases - endoglucanases, exoglucanases, and β-glucosidases (Bgl). Our group has been interested in using Bgl of Cellulomonas biazotea in studies designed to investigate cooperative action among different cellulases. We previously have cloned bgl genes encoding Cba and Cba3, which are C...
November 16, 2017: Gene
https://www.readbyqxmd.com/read/29155173/domestic-food-practices-a-study-of-food-management-behaviors-and-the-role-of-food-preparation-planning-in-reducing-waste
#12
Simona Romani, Silvia Grappi, Richard P Bagozzi, Ada Maria Barone
Recent research has started to show the key role of daily food provision practices in affecting household food waste. Building on and extending these previous contributions, the objective of this paper is to investigate how individuals' everyday practices regarding food (e.g., shopping, cooking, eating, etc.) lead to food waste, and how policy makers and the food industry can implement effective strategies to influence such practices and ultimately help consumers reduce food waste. The research performs three Studies; a critical incident qualitative study (Study 1) and a quantitative, survey-based study (Study 2) to identify and examine relevant food management behaviors associated with domestic waste...
November 16, 2017: Appetite
https://www.readbyqxmd.com/read/29154917/maternal-urinary-cadmium-levels-during-pregnancy-associated-with-risk-of-sex-dependent-birth-outcomes-from-an-e-waste-pollution-site-in-china
#13
Yuling Zhang, Xijin Xu, Aimin Chen, Chand Basha Davuljigari, Xiangbin Zheng, Stephani S Kim, Kim N Dietrich, Shuk-Mei Ho, Tiina Reponen, Xia Huo
This study was to investigate whether exposure to cadmium (Cd) during pregnancy is associated with an increased risk of adverse birth outcomes in a sex-dependent manner. Cd concentrations in maternal urine (U-Cd) samples were measured in 237 subjects from Guiyu (e-waste area) and 212 subjects from Haojiang. A significance level of p <0.05 was used for all analyses. The maternal U-Cd levels in Guiyu residents were significantly higher than Haojiang. We found significant inverse associations between U-Cd concentrations and birth anthropometry (birth weight, birth length, Head Circumference and Apgar scores with 1min and 5 mins) in female neonates, but no significant associations were observed in male neonates except Apgar (1min...
November 14, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/29154433/cardiac-muscle-wasting-in-individuals-with-cancer-cachexia
#14
Anush Barkhudaryan, Nadja Scherbakov, Jochen Springer, Wolfram Doehner
AIMS: Cachexia is a severe complication of cancer that adversely affects the course of the disease and is associated with high rates of mortality. Patients with cancer manifest symptoms, such as fatigue, shortness of breath, and impaired exercise tolerance, which are clinical signs of chronic heart failure. The aim of this study was to evaluate cardiac muscle wasting in cancer individuals. METHODS AND RESULTS: We retrospectively analysed 177 individuals who died of cancer, including 58 lung, 60 pancreatic, and 59 gastrointestinal (GI) cancers, and 42 cancer-free controls who died of other, non-cardiovascular reasons...
November 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/29154428/muscle-wasting-and-sarcopenia-in-heart-failure-and-beyond-update-2017
#15
REVIEW
Jochen Springer, Joshua-I Springer, Stefan D Anker
Sarcopenia (loss of muscle mass and muscle function) is a strong predictor of frailty, disability and mortality in older persons and may also occur in obese subjects. The prevalence of sarcopenia is increased in patients suffering from chronic heart failure. However, there are currently few therapy options. The main intervention is resistance exercise, either alone or in combination with nutritional support, which seems to enhance the beneficial effects of training. Also, testosterone has been shown to increased muscle power and function; however, a possible limitation is the side effects of testosterone...
November 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/29154196/analysis-of-potential-genotoxic-impurities-in-rabeprazole-active-pharmaceutical-ingredient-via-liquid-chromatography-tandem-mass-spectrometry-following-quality-by-design-principles-for-method-development
#16
Katerina Iliou, Anđelija Malenović, Yannis L Loukas, Yannis Dotsikas
A novel Liquid Chromatography-tandem mass spectrometry (LC-MS/MS) method is presented for the quantitative determination of two potential genotoxic impurities (PGIs) in rabeprazole active pharmaceutical ingredient (API). In order to overcome the analytical challenges in the trace analysis of PGIs, a development procedure supported by Quality-by-Design (QbD) principles was evaluated. The efficient separation between rabeprazole and the two PGIs in the shortest analysis time was set as the defined analytical target profile (ATP) and to this purpose utilization of a switching valve allowed the flow to be sent to waste when rabeprazole was eluted...
November 12, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29154153/effects-of-temperature-and-hrt-on-performance-of-a-novel-insulated-anaerobic-filter-iaf-system-incorporated-with-the-waste-heat-input-for-building-wastewater-treatment
#17
Chalearn Bouted, Chavalit Ratanatamskul
Effects of temperature and hydraulic retention time (HRT) on the performance of the novel insulated anaerobic filter system (IAF) incorporated with the waste heat input in treating building wastewater were investigated. In this study, an electric heater was used to simulate the waste heat input from air conditioner to the IAF system. The wastewater was collected from an office building in Phitsanulok province, Thailand. The HRTs of IAF system were varied to 9, 18 and 27 h, whereas the water temperatures were raised from 30 °C to 35 °C, 40 °C and 45 °C by electric heating to the IAF tank with the covered insulator...
November 15, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/29154091/tuning-role-and-mechanism-of-paint-sludge-for-characteristics-of-sewage-sludge-carbon-paint-sludge-as-a-new-macro-pores-forming-agent
#18
Siyang Li, Jinxi Feng, Shuanghong Tian, Shenyu Lan, Chao Fan, Xiaosheng Liu, Ya Xiong
For the first time, paint sludge waste (PS) was used as a pore forming agent in the preparation of sewage sludge derived carbon (SC). The tuning role and mechanism of PS for characteristics of SC were explored. It was found that a sludge carbon (SCPS-Zn) with rich macro-, meso- and micro- porous could be produced by one-step pyrolytic process of sludge in the presence of PS and ZnCl2. Its surface area could reach as high as 680.5m(2)g(-1) as 88.4 times and 4.8 times of sludge carbon without addition of PS and ZnCl2 (SC) and only addition of ZnCl2 (SCZn), respectively...
November 7, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29154049/date-palm-biochar-polymer-composites-an-investigation-of-electrical-mechanical-thermal-and-rheological-characteristics
#19
Anesh Manjaly Poulose, Ahmed Yagoub Elnour, Arfat Anis, Hamid Shaikh, S M Al-Zahrani, Justin George, Mohammad I Al-Wabel, Adel R Usman, Yong Sik Ok, Daniel C W Tsang, Ajit K Sarmah
The application of biochar (BC) as a filler in polymers can be viewed as a sustainable approach that incorporates pyrolysed waste based value-added material and simultaneously mitigate bio-waste in a smart way. The overarching aim of this work was to investigate the electrical, mechanical, thermal and rheological properties of biocomposite developed by utilizing date palm waste-derived BC for the reinforcing of polypropylene (PP) matrix. Date palm waste derived BC prepared at (700 and 900°C) were blended at different proportions with polypropylene and the resultant composites (BC/PP) were characterized using an array of techniques (scanning electron microscope, energy-dispersive X-ray spectroscopy and Fourier transform infra-red spectroscopy)...
November 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29154008/a-combined-model-to-assess-technical-and-economic-consequences-of-changing-conditions-and-management-options-for-wastewater-utilities
#20
Mathias Giessler, Jens Tränckner
The paper presents a simplified model that quantifies economic and technical consequences of changing conditions in wastewater systems on utility level. It has been developed based on data from stakeholders and ministries, collected by a survey that determined resulting effects and adapted measures. The model comprises all substantial cost relevant assets and activities of a typical German wastewater utility. It consists of three modules: i) Sewer for describing the state development of sewer systems, ii) WWTP for process parameter consideration of waste water treatment plants (WWTP) and iii) Cost Accounting for calculation of expenses in the cost categories and resulting charges...
November 15, 2017: Journal of Environmental Management
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