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Environmental cleaning

Adrienne J Bartlett, Amanda M Hedges, Kyna D Intini, Lisa R Brown, France J Maisonneuve, Stacey A Robinson, Patricia L Gillis, Shane R de Solla
Neonicotinoid insecticides are environmentally persistent and highly water-soluble, and thus are prone to leaching into surface waters where they may negatively affect non-target aquatic insects. Most of the research to date has focused on imidacloprid, and few data are available regarding the effects of other neonicotinoids or their proposed replacements (butenolide insecticides). The objective of this study was to assess the toxicity of six neonicotinoids (imidacloprid, thiamethoxam, acetamiprid, clothianidin, thiacloprid, and dinotefuran) and one butenolide (flupyradifurone) to Hexagenia spp...
March 12, 2018: Environmental Pollution
Chi-Yuan Lee, Shih-Chun Li, Chia-Hung Chen, Yen-Ting Huang, Yu-Syuan Wang
Looking for alternative energy sources has been an inevitable trend since the oil crisis, and close attentioned has been paid to hydrogen energy. The proton exchange membrane (PEM) water electrolyzer is characterized by high energy efficiency, high yield, simple system and low operating temperature. The electrolyzer generates hydrogen from water free of any carbon sources (provided the electrons come from renewable sources such as solar and wind), so it is very clean and completely satisfies the environmental requirement...
March 15, 2018: Sensors
Swee Siang Wong, Cheng Hua Huang, Chiu Chu Yang, Yi Pei Hsieh, Chen Ni Kuo, Yi Ru Chen, Li Ching Chen
Background: Environmental cleaning is a fundamental principle of infection control in health care settings. We determined whether implementing separated environmental cleaning management measures in MICU reduced the density of HAI. Methods: We performed a 4-month prospective cohort intervention study between August and December 2013, at the MICU of Cathay General hospital. We arranged a training program for all the cleaning staff regarding separated environmental cleaning management measures by using disposable wipes of four colors to clean the patients' bedside areas, areas at a high risk of contamination, paperwork areas, and public areas...
2018: Antimicrobial Resistance and Infection Control
Suresh Neethirajan, Vasanth Ragavan, Xuan Weng, Rohit Chand
Current food production faces tremendous challenges from growing human population, maintaining clean resources and food qualities, and protecting climate and environment. Food sustainability is mostly a cooperative effort resulting in technology development supported by both governments and enterprises. Multiple attempts have been promoted in tackling challenges and enhancing drivers in food production. Biosensors and biosensing technologies with their applications, are being widely applied to tackling top challenges in food production and its sustainability...
March 12, 2018: Biosensors
Alexandra Martins, Lúcia Guilhermino
The environmental contamination by microplastics is a global challenge to ecosystem and human health, and the knowledge on the long-term effects of such particles is limited. Thus, the effects of microplastics and post-exposure recovery were investigated over 4 generations (F0 , F1 , F2 , F3 ) using Daphnia magna as model. Effect criteria were parental mortality, growth, several reproductive parameters, and population growth rate. Microplastics exposure (0.1mg/l of pristine polymer microspheres 1-5μm diameter) caused parental mortality (10-100%), and significantly (p≤0...
March 9, 2018: Science of the Total Environment
Darragh Mullins, Derek Coburn, Louise Hannon, Edward Jones, Eoghan Clifford, Martin Glavin
Wastewater treatment facilities are continually challenged to meet both environmental regulations and reduce running costs (particularly energy and staffing costs). Improving the efficiency of operational monitoring at wastewater treatment plants (WWTPs) requires the development and implementation of appropriate performance metrics; particularly those that are easily measured, strongly correlate to WWTP performance, and can be easily automated, with a minimal amount of maintenance or intervention by human operators...
March 2018: Water Science and Technology: a Journal of the International Association on Water Pollution Research
T Porseryd, N Reyhanian Caspillo, K Volkova, L Elabbas, T Källman, P Dinnétz, P-E Olsson, I Porsch-Hällström
17α-Ethinylestradiol (EE2 ) is a ubiquitous aquatic contaminant shown to decrease fish fertility at low concentrations, especially in fish exposed during development. The mechanisms of the decreased fertility are not fully understood. In this study, we perform transcriptome analysis by RNA sequencing of testes from zebrafish with previously reported lowered fertility due to exposure to low concentrations of EE2 during development. Fish were exposed to 1.2 and 1.6 ng/L (measured concentration; nominal concentrations 3 and 10 ng/L) of EE2 from fertilization to 80 days of age, followed by 82 days of remediation in clean water...
March 8, 2018: General and Comparative Endocrinology
Jacqueline M Leung, Sarah A Budischak, Hao Chung The, Christina Hansen, Rowann Bowcutt, Rebecca Neill, Mitchell Shellman, P'ng Loke, Andrea L Graham
Genetic and environmental factors shape host susceptibility to infection, but how and how rapidly environmental variation might alter the susceptibility of mammalian genotypes remains unknown. Here, we investigate the impacts of seminatural environments upon the nematode susceptibility profiles of inbred C57BL/6 mice. We hypothesized that natural exposure to microbes might directly (e.g., via trophic interactions) or indirectly (e.g., via microbe-induced immune responses) alter the hatching, growth, and survival of nematodes in mice housed outdoors...
March 2018: PLoS Biology
Tiffany Schroder, Sharyn Gaskin, Kirstin Ross, Harriet Whiley
Fungal contamination of indoor air is an issue of increasing public health concern. Essential oils have been demonstrated to have antifungal capabilities, but there are limited studies investigating the efficacy of essential oils against fungi relevant to air quality. This study provides a preliminary screening of the antifungal properties of clove, lavender and eucalyptus essential oils against a range of fungal species isolated from environmental air samples. The ability of the essential oils to inhibit fungal growth was examined using the disk diffusion assay on malt extract agar and was compared with vinegar, bleach and limonene, with phenol as a positive control...
March 8, 2018: International Journal of Occupational and Environmental Health
Marcela Brandão Costa, Francesca Valêncio Tavares, Claudia Bueno Martinez, Ioni Gonçalves Colares, Camila de Martinez Gaspar Martins
This study investigated the ability of Potamogeton pectinatus L. to accumulate copper and its effects on plants. In accumulation tests, macrophytes were exposed (96 h) to different copper concentrations (0-1000 µM) and the metal was measured in media and plant tissues (roots, stems and leaves) to determine the bioconcentration factor (BCF). Plants accumulated high concentrations of copper in a dose-dependent manner and roots was the main organ for copper accumulation. However, the more copper increased in water, the more BCF values decreased...
March 3, 2018: Ecotoxicology and Environmental Safety
Renata Soares Pinto, Renata Machado Dos Santos Pinto, Felipe Fochat Silva Melo, Suzana Santos Campos, Cláudia Marques-Dos-Santos Cordovil
Food waste has important environmental, social and economic impacts and increasing attention has been given lately to the unparalleled scale of food waste in the food supply chain worldwide. An initiative aiming to reduce food waste was tested at the School of Agriculture canteen (University of Lisbon, Portugal). The "Clean dish, clean conscience!" initiative consisted of a simple and inexpensive education campaign to raise awareness of reducing plate waste, by establishing the connection between food waste and personal behaviour...
March 1, 2018: Waste Management
Michael Pérez-Rodríguez, Roberto Gerardo Pellerano, Leonardo Pezza, Helena Redigolo Pezza
Tetracyclines are widely used for both the treatment and prevention of diseases in animals as well as for the promotion of rapid animal growth and weight gain. This practice may result in trace amounts of these drugs in products of animal origin, such as milk and eggs, posing serious risks to human health. The presence of tetracycline residues in foods can lead to the transmission of antibiotic-resistant pathogenic bacteria through the food chain. In order to ensure food safety and avoid exposure to these substances, national and international regulatory agencies have established tolerance levels for authorized veterinary drugs, including tetracycline antimicrobials...
May 15, 2018: Talanta
Jing Yu, Ling-Ling Pei
By employing the Graph Model for Conflict Resolution methodology, this paper models and analyzes a brownfield conflict that occurred at the Changzhou Foreign Language School in Jiangsu, China, in 2016. This conflict made national headlines when news reports revealed that a large number of students and staff suffered from health issues after the school moved to a new site that is built on recently restored land adjacent to the original "Chang Long Chemical" block. Since stakeholders in the conflict hold different strengths of preference, a new option prioritization technique is employed to elicit both crisp preferences and the strength of preferences for the decision-makers (DMs) in the conflict...
February 24, 2018: International Journal of Environmental Research and Public Health
John Mills, Kylie Marree Horváth, Angela Denise Reynolds, Gale Brightwell
AIMS: To investigate the transmission route of Carnobacterium from the farm environment to the meat-manufacturing plant and potential risk for meat spoilage. METHODS AND RESULTS: A sheep farm level survey of Carnobacterium, consisting of 150 environmental and animal (no 100) associated samples, was carried out on two farms. A further 20 lamb carcass samples were taken from an abattoir servicing one of the farms. The majority of C. maltaromaticum isolates were associated with fleece followed by hard sheep contact surfaces, rectal-anal-mucosal swabs and carcasses...
March 1, 2018: Journal of Applied Microbiology
Yasuhiro Ikeda, Katsumi Shigemura, Masashi Nomi, Chie Tabata, Koichi Kitagawa, Soichi Arakawa, Masato Fujisawa
We present our experience controlling outbreaks of extended-spectrum beta-lactamase (ESBL)-producing bacteria in catheter-associated urinary tract infection and our measures for preventing recurrence of outbreaks. In June 2015, 9 out of 44 hospitalized patients in the same ward had positive urine culture with antibiotic-resistant bacteria, including ESBL-producing Klebsiella pneumoniae belonging to the same cluster, indicating a localized outbreak. The environmental tests detected resistant strains at 1,000 colony forming units/cm2 or more in 8 out of 10 tests...
February 28, 2018: Japanese Journal of Infectious Diseases
Eveline Hürlimann, Kigbafori D Silué, Fabien Zouzou, Mamadou Ouattara, Thomas Schmidlin, Richard B Yapi, Clarisse A Houngbedji, Kouassi Dongo, Bernadette A Kouadio, Siaka Koné, Bassirou Bonfoh, Eliézer K N'Goran, Jürg Utzinger, Cinthia A Acka-Douabélé, Giovanna Raso
BACKGROUND: Preventive chemotherapy with donated anthelminthic drugs is the cornerstone for the control of helminthiases. However, reinfection can occur rapidly in the absence of clean water and sanitation coupled with unhygienic behaviour. The purpose of this study was to assess the effect of an integrated package of interventions, consisting of preventive chemotherapy, community-led total sanitation (CLTS) and health education, on the prevalence of helminth and intestinal protozoa infections and on participants' knowledge, attitude, practice and beliefs (KAPB) towards these diseases including water, sanitation and hygiene (WASH)...
February 27, 2018: Parasites & Vectors
Thomas Reid, Subba Rao Chaganti, Ian G Droppo, Christopher G Weisener
Baseline biogeochemical surveys of natural environments is an often overlooked field of environmental studies. Too often research begins once contamination has occurred, with a knowledge gap as to how the affected area behaved prior to outside (often anthropogenic) influences. These baseline characterizations can provide insight into proposed bioremediation strategies crucial in cleaning up chemical spill sites or heavily mined regions. Hence, this study was conducted to survey the in-situ microbial activity within freshwater hydrocarbon-rich environments cutting through the McMurray formation - the geologic strata constituting the oil sands...
February 19, 2018: Water Research
Hongyue Jin, Peter Afiuny, Stephen Dove, Gojmir Furlan, Miha Zakotnik, Yuehwern Yih, John W Sutherland
Neodymium-iron-boron (NdFeB) magnets offer the strongest magnetic field per unit volume, and thus, are widely used in clean energy applications such as electric vehicle motors. However, rare earth elements (REEs), which are the key materials for creating NdFeB magnets, have been subject to significant supply uncertainty in the past decade. NdFeB magnet-to-magnet recycling has recently emerged as a promising strategy to mitigate this supply risk. This paper assesses the environmental footprint of NdFeB magnet-to-magnet recycling by directly measuring the environmental inputs and outputs from relevant industries and compares the results with production from 'virgin' materials, using life cycle assessments...
February 27, 2018: Environmental Science & Technology
Zarrin Basharat, Azra Yasmin, Tongtong He, Yigang Tong
Bacteria within the genus Alcaligenes, exhibit diverse properties but remain largely unexplored at genome scale. To shed light on the genome structure, heterogeneity and traits of Alcaligenes species, the genome of a tannery effluent isolated Alcaligenes faecalis subsp. phenolicus MB207 was sequenced and assembled. The genome was compared to the whole genome sequences of genus Alcaligenes present in the National Centre for Biotechnology Information database. Core, pan and species specific gene sequences i.e...
February 26, 2018: Scientific Reports
Samira Yousefzadeh, Atiyeh Rajabi Matin, Ehsan Ahmadi, Zahra Sabeti, Mahmood Alimohammadi, Hassan Aslani, Ramin Nabizadeh
One of the most important aspects of environmental issues is the demand for clean and safe water. Meanwhile, disinfection process is one of the most important steps in safe water production. The present study aims at estimating the performance of UV, nano Zero-Valent Iron particles (nZVI, nano-Fe0 ), and UV treatment with the addition of nZVI (combined process) for Bacillus subtilis spores inactivation. Effects of different factors on inactivation including contact time, initial nZVI concentration, UV irradiance and various aerations conditions were investigated...
February 23, 2018: Food and Chemical Toxicology
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