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https://www.readbyqxmd.com/read/27923138/metallogel-templated-synthesis-and-stabilization-of-silver-particles-and-its-application-in-catalytic-reduction-of-nitro-arene
#1
Mukesh Sharma, Plaban Jyoti Sarma, Manash Jyoti Goswami, Kusum K Bania
Metallogel of iron-carboxylates was obtained from trans-1,2-cyclohexanedicarboxylic acid in dimethylformamide (DMF) at basic condition. Spectroscopic and SEM morphology study of the iron-metallogel revealed that the iron complex with dicarboxylic acid was linked together via carboxylates and led to a supramolecular helical like architecture. The synthesized metallogel served as an excellent template for in-situ reduction of silver ion to silver particles micro to nano scale range. Variation of AgNO3 concentration shepherd to change the morphology of the Ag-particles...
November 20, 2016: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/27922763/antimicrobial-resistance-in-nontyphoidal-salmonella-isolated-from-human-and-poultry-related-samples-in-brazil-20-year-meta-analysis
#2
Daiane Voss-Rech, Luciana Potter, Clarissa Silveira Luiz Vaz, Daniela Isabel Brayer Pereira, Luís Antonio Sangioni, Águeda Castagna Vargas, Sônia de Avila Botton
Nontyphoidal Salmonella are one of the leading causes of foodborne diseases in the world. As poultry products are recognized as main sources of human salmonellosis, nontyphoidal Salmonella control has become a global issue for the poultry industry. The increasing antimicrobial resistance in poultry-related nontyphoidal Salmonella serovars is a global matter of concern. By monitoring the evolution of antimicrobial resistance, alternative treatments can be identified and possible restrictions in the treatment of systemic human salmonellosis foreseen...
December 6, 2016: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/27922203/vulnerability-to-alcohol-related-problems-a-policy-brief-with-implications-for-the-regulation-of-alcohol-marketing
#3
Thomas F Babor, Katherine Robaina, Jonathan K Noel, E Bruce Ritson
BACKGROUND AND AIMS: The concern that alcohol advertising can have detrimental effects on vulnerable viewers has prompted the development of codes of responsible advertising practices. This paper evaluates critically the concept of vulnerability as it applies to (1) susceptibility to alcohol-related harm and (2) susceptibility to the effects of marketing, and describes its implications for the regulation of alcohol marketing. METHOD: We describe the findings of key published studies, review papers and expert reports to determine whether these two types of vulnerability apply to population groups defined by (1) age and developmental history; (2) personality characteristics; (3) family history of alcoholism; (4) female sex and pregnancy risk; and (5) history of alcohol dependence and recovery status...
December 6, 2016: Addiction
https://www.readbyqxmd.com/read/27922197/variability-in-the-performance-characteristics-of-igg-anti-hev-assays-and-its-impact-on-reliability-of-seroprevalence-rates-of-hepatitis-e
#4
Maja Kodani, Nourine Ahmed, Alexandra Tejada-Strop, Amanda Poe, Maxine M Denniston, Jan Drobeniuc, Saleem Kamili
Hepatitis E is a major public health problem in developing countries and is increasingly being recognized as a cause of substantial sporadic viral hepatitis infections in industrialized countries. Variable rates of hepatitis E seroprevalence have been reported from the same geographic regions depending on the assay used. In this study, we evaluated the performance characteristics of four assays which included two commercial assays, Wantai HEV-IgG ELISA kit (Wantai, China) and DS-EIA-ANTI-HEV-G kit (DSI, Italy), one NIH-developed immunoassay (NIH-55K, Kuniholm et al...
December 6, 2016: Journal of Medical Virology
https://www.readbyqxmd.com/read/27922095/co-expression-network-analyses-identify-functional-modules-associated-with-development-and-stress-response-in-gossypium-arboreum
#5
Qi You, Liwei Zhang, Xin Yi, Kang Zhang, Dongxia Yao, Xueyan Zhang, Qianhua Wang, Xinhua Zhao, Yi Ling, Wenying Xu, Fuguang Li, Zhen Su
Cotton is an economically important crop, essential for the agriculture and textile industries. Through integrating transcriptomic data, we discovered that multi-dimensional co-expression network analysis was powerful for predicting cotton gene functions and functional modules. Here, the recently available transcriptomic data on Gossypium arboreum, including data on multiple growth stages of tissues and stress treatment samples were applied to construct a co-expression network exploring multi-dimensional expression (development and stress) through multi-layered approaches...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27922081/source-apportionment-of-chlorinated-polycyclic-aromatic-hydrocarbons-associated-with-ambient-particles-in-a-japanese-megacity
#6
Yuta Kamiya, Akihiro Iijima, Fumikazu Ikemori, Tomoaki Okuda, Takeshi Ohura
Chlorinated polycyclic aromatic hydrocarbons (ClPAHs) are novel species of environmental contaminants whose possible sources remain unclear. The occurrence of ClPAHs within total suspended particles (TSP) is compared with weekly air samples at two sites of differing characteristics (industrial and residential) in the megacity of Nagoya, Japan. Samples were collected over 12 months during 2011-2012. All 24 species of targeted ClPAHs were detected at both industrial and residential sites, where mean concentrations of total ClPAHs in TSP were 20...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27922014/large-differences-in-regional-precipitation-change-between-a-first-and-second-2%C3%A2-k-of-global-warming
#7
Peter Good, Ben B B Booth, Robin Chadwick, Ed Hawkins, Alexandra Jonko, Jason A Lowe
For adaptation and mitigation planning, stakeholders need reliable information about regional precipitation changes under different emissions scenarios and for different time periods. A significant amount of current planning effort assumes that each K of global warming produces roughly the same regional climate change. Here using 25 climate models, we compare precipitation responses with three 2 K intervals of global ensemble mean warming: a fast and a slower route to a first 2 K above pre-industrial levels, and the end-of-century difference between high-emission and mitigation scenarios...
December 6, 2016: Nature Communications
https://www.readbyqxmd.com/read/27922004/annually-resolved-north-atlantic-marine-climate-over-the-last-millennium
#8
D J Reynolds, J D Scourse, P R Halloran, A J Nederbragt, A D Wanamaker, P G Butler, C A Richardson, J Heinemeier, J Eiríksson, K L Knudsen, I R Hall
Owing to the lack of absolutely dated oceanographic information before the modern instrumental period, there is currently significant debate as to the role played by North Atlantic Ocean dynamics in previous climate transitions (for example, Medieval Climate Anomaly-Little Ice Age, MCA-LIA). Here we present analyses of a millennial-length, annually resolved and absolutely dated marine δ(18)O archive. We interpret our record of oxygen isotope ratios from the shells of the long-lived marine bivalve Arctica islandica (δ(18)O-shell), from the North Icelandic shelf, in relation to seawater density variability and demonstrate that solar and volcanic forcing coupled with ocean circulation dynamics are key drivers of climate variability over the last millennium...
December 6, 2016: Nature Communications
https://www.readbyqxmd.com/read/27921169/drying-kinetics-of-deformable-and-cracking-nano-porous-gels
#9
J Thiery, E Keita, S Rodts, D Courtier Murias, T Kodger, A Pegoraro, P Coussot
The desiccation of porous materials encompasses a wide range of technological and industrial processes and is acutely sensitive to the hierarchical structure of the porous materials resulting in complex dynamics which are challenging to unravel. Macroscopic observations of the surface and geometry of model colloidal gels during desiccation under controlled air flow highlight the role of crack formation in drying. The density of cracks and their rate of appearance depend on the initial solid fraction of the gels and their adherence to the substrate...
December 2016: European Physical Journal. E, Soft Matter
https://www.readbyqxmd.com/read/27921109/dna-and-bsa-damage-inhibitory-activities-and-anti-acetylcholinesterase-anti-porcine-%C3%AE-amylase-and-antioxidant-properties-of-dolichos-lablab-beans
#10
Hosam M Habib, Serah W Theuri, Ehab Kheadr, Fedah E Mohamed
The underutilized Kenyan variety of Dolichos lablab bean seeds serve as a good source of natural antioxidants, which can probably be effective in reducing the risk of occurrence of several diseases. This study was undertaken for the first time to address the limited knowledge regarding the antioxidant activities of lablab beans. Moreover, their DNA damage inhibitory activity, bovine serum albumin (BSA) damage inhibitory activity, and the inhibition of acetylcholinesterase and porcine α-amylase were also investigated...
December 6, 2016: Food & Function
https://www.readbyqxmd.com/read/27921037/acute-kidney-injury-in-western-countries
#11
REVIEW
Josée Bouchard, Ravindra L Mehta
BACKGROUND: Acute kidney injury (AKI) is frequent and is associated with poor outcomes, including increased mortality, higher risk of chronic kidney disease, and prolonged hospital lengths of stay. The epidemiology of AKI mainly derives from studies performed in Western high-income countries. More limited data are available from Western low-income and middle-income countries (LMICs) located in Central and South America. SUMMARY: In this review, we summarize the most recent data on the epidemiology of AKI in Western countries, aiming to contrast results from industrialized high-income countries with LMICs...
October 2016: Kidney Diseases
https://www.readbyqxmd.com/read/27920887/preliminary-study-on-cost-effective-l-tryptophan-production-from-indole-and-l-serine-by-e-coli-cells
#12
Tahereh Sadeghiyan-Rizi, Jamshid Fooladi, Sima Sadrai
BACKGROUND: L-tryptophan is used widespread in the pharmaceutical industry. The majority of L-Trp production depends on microbial processes that produce L-tryptophan from indole and L-serine. These processes are very costly due to the costs of precursors, especially L-serine. Use of inexpensive substitutions as the L-serine source of L-tryptophan production enables us to reach a cost-effective process. In this paper, effect of Triton X-100 on L-Trp production and the ability to use Iranian cane molasses as inexpensive L-serine source was investigated...
October 2016: Avicenna Journal of Medical Biotechnology
https://www.readbyqxmd.com/read/27920772/streptococcus-thermophilus-apc151-strain-is-suitable-for-the-manufacture-of-naturally-gaba-enriched-bioactive-yogurt
#13
Daniel M Linares, Tom F O'Callaghan, Paula M O'Connor, R P Ross, Catherine Stanton
Consumer interest in health-promoting food products is a major driving force for the increasing global demand of functional (probiotic) dairy foods. Yogurt is considered the ideal medium for delivery of beneficial functional ingredients. Gamma-amino-butyric acid has potential as a bioactive ingredient in functional foods due to its health-promoting properties as an anti-stress, anti-hypertensive, and anti-diabetic agent. Here, we report the use of a novel Streptococcus thermophilus strain, isolated from the digestive tract of fish, for production of yogurt naturally enriched with 2 mg/ml of gamma-amino-butyric acid (200 mg in a standard yogurt volume of 100 ml), a dose in the same range as that provided by some commercially available gamma-amino-butyric acid supplements...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27920764/one-step-pcr-detection-of-salmonella-pullorum-gallinarum-using-a-novel-target-the-flagellar-biosynthesis-gene-flhb
#14
Dan Xiong, Li Song, Shizhong Geng, Jing Tao, Shumin An, Zhiming Pan, Xinan Jiao
Salmonella enterica serovar Pullorum/Gallinarum is an important infectious pathogen that has caused widespread problems for chicken industry. Traditional Salmonella serotyping is an expensive and time-consuming process. In this study, we developed a rapid one-step polymerase chain reaction (PCR) method to identify S. Pullorum/Gallinarum. The PCR-based assay focuses on flhB, which shows a deficient region only in S. Pullorum/Gallinarum, compared with that of other serovars. The specificity and sensitivity of the PCR system were evaluated...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27920762/artificial-intelligence-vs-statistical-modeling-and-optimization-of-continuous-bead-milling-process-for-bacterial-cell-lysis
#15
Shafiul Haque, Saif Khan, Mohd Wahid, Sajad A Dar, Nipunjot Soni, Raju K Mandal, Vineeta Singh, Dileep Tiwari, Mohtashim Lohani, Mohammed Y Areeshi, Thavendran Govender, Hendrik G Kruger, Arshad Jawed
For a commercially viable recombinant intracellular protein production process, efficient cell lysis and protein release is a major bottleneck. The recovery of recombinant protein, cholesterol oxidase (COD) was studied in a continuous bead milling process. A full factorial response surface methodology (RSM) design was employed and compared to artificial neural networks coupled with genetic algorithm (ANN-GA). Significant process variables, cell slurry feed rate (A), bead load (B), cell load (C), and run time (D), were investigated and optimized for maximizing COD recovery...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27920758/effectiveness-of-f18-fimbrial-antigens-released-by-a-novel-autolyzed-salmonella-expression-system-as-a-vaccine-candidate-against-lethal-f18-stec-infection
#16
Gayeon Won, John H Lee
Porcine edema disease (ED) caused by Shiga toxin 2e producing Escherichia coli expressing F18ab(+) fimbriae (F18ab(+)STEC) frequently occurs in post-weaned piglets, resulting in a significant economic loss in swine industries worldwide. In the present study, we proposed an efficient prevention scheme against ED in which the attenuated Salmonella Typhimurium inactivated by the E-mediated cell lysis to deliver target antigens, FedF and FedA, which function in fimbrial-mediated adhesion and as a major subunit of F18ab+fimbriae, respectively...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27920757/advances-and-challenges-in-viability-detection-of-foodborne-pathogens
#17
REVIEW
Dexin Zeng, Zi Chen, Yuan Jiang, Feng Xue, Baoguang Li
Foodborne outbreaks are a serious public health and food safety concern worldwide. There is a great demand for rapid, sensitive, specific, and accurate methods to detect microbial pathogens in foods. Conventional methods based on cultivation of pathogens have been the gold standard protocols; however, they take up to a week to complete. Molecular assays such as polymerase chain reaction (PCR), sequencing, microarray technologies have been widely used in detection of foodborne pathogens. Among molecular assays, PCR technology [conventional and real-time PCR (qPCR)] is most commonly used in the foodborne pathogen detection because of its high sensitivity and specificity...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27920526/in-vitro-inflammatory-effects-of-hard-metal-wc-co-nanoparticle-exposure
#18
Andrea L Armstead, Bingyun Li
Identifying the toxicity of nanoparticles (NPs) is an important area of research as the number of nanomaterial-based consumer and industrial products continually rises. In addition, the potential inflammatory effects resulting from pulmonary NP exposure are emerging as an important aspect of nanotoxicity. In this study, the toxicity and inflammatory state resulting from tungsten carbide-cobalt (WC-Co) NP exposure in macrophages and a coculture (CC) of lung epithelial cells (BEAS-2B) and macrophages (THP-1) at a 3:1 ratio were examined...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27920443/polymer-matrix-nanocomposites-for-automotive-structural-components
#19
Amit K Naskar, Jong K Keum, Raymond G Boeman
Over the past several decades, the automotive industry has expended significant effort to develop lightweight parts from new easy-to-process polymeric nanocomposites. These materials have been particularly attractive because they can increase fuel efficiency and reduce greenhouse gas emissions. However, attempts to reinforce soft matrices by nanoscale reinforcing agents at commercially deployable scales have been only sporadically successful to date. This situation is due primarily to the lack of fundamental understanding of how multiscale interfacial interactions and the resultant structures affect the properties of polymer nanocomposites...
December 6, 2016: Nature Nanotechnology
https://www.readbyqxmd.com/read/27920438/the-role-of-nanotechnology-in-the-development-of-battery-materials-for-electric-vehicles
#20
REVIEW
Jun Lu, Zonghai Chen, Zifeng Ma, Feng Pan, Larry A Curtiss, Khalil Amine
A significant amount of battery research and development is underway, both in academia and industry, to meet the demand for electric vehicle applications. When it comes to designing and fabricating electrode materials, nanotechnology-based approaches have demonstrated numerous benefits for improved energy and power density, cyclability and safety. In this Review, we offer an overview of nanostructured materials that are either already commercialized or close to commercialization for hybrid electric vehicle applications, as well as those under development with the potential to meet the requirements for long-range electric vehicles...
December 6, 2016: Nature Nanotechnology
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