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https://www.readbyqxmd.com/read/28535601/risk-of-post-fire-metal-mobilization-into-surface-water-resources-a-review
#1
REVIEW
Joji Abraham, Kim Dowling, Singarayer Florentine
One of the significant economic benefits to communities around the world of having pristine forest catchments is the supply of substantial quantities of high quality potable water. This supports a saving of around US$ 4.1 trillion per year globally by limiting the cost of expensive drinking water treatments and provision of unnecessary infrastructure. Even low levels of contaminants specifically organics and metals in catchments when in a mobile state can reduce these economic benefits by seriously affecting the water quality...
May 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28535590/emission-of-volatile-organic-compounds-and-production-of-secondary-organic-aerosol-from-stir-frying-spices
#2
Tengyu Liu, Qianyun Liu, Zijun Li, Lei Huo, ManNin Chan, Xue Li, Zhen Zhou, Chak K Chan
Cooking is an important source of volatile organic compounds (VOCs) and a potential source of secondary organic aerosol (SOA) both indoors and outdoors. In this study, VOC emissions from heating corn oil and stir-frying spices (i.e. garlic, ginger, myrcia and zanthoxylum piperitum (Sichuan pepper)) were characterized using an on-line membrane inlet vacuum ultraviolet single-photon ionization time-of-flight mass spectrometer (VUV-SPI-TOFMS). VOC emissions from heating corn oil were dominated by aldehydes, which were enhanced by factors of one order of magnitude when stir-frying spices...
May 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28535485/quantification-of-residual-antibiotics-in-cow-manure-being-spread-over-agricultural-land-and-assessment-of-their-behavioral-effects-on-antibiotic-resistant-bacteria
#3
Ji-Ran Yeom, Soon-Uk Yoon, Chang-Gyun Kim
Antibiotic resistant bacteria (ARB) in livestock manure used as fertilizer and spread over agriculture land, may pose a threat to the health of humans. Considering this, the concentrations of tetracycline (TC), oxytetracycline (OTC), and sulfathiazole (STZ) in the surface soil were quantified using LC-MS. These antibiotics have been used in livestock and are found in fertilizer produced from livestock excretions. Species of ABR were identified using 16S rDNA. Soil samples were collected at depths of 0, 7, and 15 cm from farmland in Incheon (South Korea)...
May 16, 2017: Chemosphere
https://www.readbyqxmd.com/read/28535452/highly-sensitive-uhplc-ms-ms-method-for-the-simultaneous-estimation-of-propafenone-and-its-metabolites-5-hydroxypropafenone-and-n-depropylpropafenone-on-human-dried-blood-spots-technique-and-application-to-a-pharmacokinetic-study
#4
Adinarayana Andy, Raja Reddy Kallem, Ramesh Mullangi, Divya Andy, J V L N Seshagiri Rao
A highly sensitive, rapid and selective UHPLC-MS/MS method has been developed and validated for quantification of the propafenone (PF), 5-hydroxypropafenone (5-OHPF) and N-depropylpropafenone (N-DPF) on human dried blood spot (DBS). The assay procedure involves a solid-liquid extraction of PF, 5-OHPF and N-DPF and amlodipine (internal standard, I.S.) from dried human DBS cards using water and acetonitrile. The chromatographic resolution was achieved on a BEH C18 column using a gradient mobile phase consisting of 0...
May 11, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28535401/workforce-planning-and-training-in-obstetrics-and-gynaecology-across-europe-a-survey-of-national-trainee-societies
#5
Anna J M Aabakke, Alexandra Kristufkova, Charlotte Boyon, Laurids T Bune, Maud Van de Venne
OBJECTIVE(S): To describe the infrastructural differences in training in Obstetrics and Gynaecology (ObGyn) across Europe. STUDY DESIGN: Descriptive web-based survey of 31 national ObGyn trainee societies representing the 30 member countries of the European Network of Trainees in Obstetrics and Gynaecology. Answers were verified in a telephone interview and only countries which had completed the telephone interview were included in the final analysis. RESULTS: The final analysis included 28 of 31 societies representing 27 countries (response rate 90%)...
May 10, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28535399/dry-skin-and-pressure-ulcer-risk-a-multi-center-cross-sectional-prevalence-study-in-german-hospitals-and-nursing-homes
#6
Anna Lechner, Nils Lahmann, Konrad Neumann, Ulrike Blume-Peytavi, Jan Kottner
BACKGROUND: Pressure ulcers are a serious health problem in medical and nursing care. Therefore, effective prevention is crucial. Major pressure ulcer risk factors have been identified but the particular role of dry skin (xerosis cutis) is unclear. OBJECTIVES: To investigate possible associations between dry skin and pressure ulcers focusing on the sacrum/trochanter and at heel/ankle skin areas. DESIGN: Two multicenter cross-sectional studies...
May 18, 2017: International Journal of Nursing Studies
https://www.readbyqxmd.com/read/28535355/effect-of-composition-asymmetry-on-the-phase-separation-and-crystallization-in-double-crystalline-binary-polymer-blends-a-dynamic-monte-carlo-simulation-study
#7
Ashok Kumar Dasmahapatra
Polymer blends offer an exciting material for various potential applications due to their tunable properties by varying constituting components and their relative composition. Our simulation results unravel an intrinsic relationship between crystallization behavior and composition asymmetry. We report simulation results for non-isothermal and isothermal crystallization with weak and strong segregation strength to elucidate the composition dependent crystallization behavior. With increasing composition of low melting B-polymer, macrophase separation temperature changes non-monotonically, which is attributed to the non-monotonic change in diffusivity of both the polymers...
May 23, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28535343/tuning-adsorption-duration-to-control-the-diffusion-of-a-nanoparticle-in-adsorbing-polymers
#8
Xuezheng Cao, Holger Merlitz, Chen-Xu Wu
Controlling the nanoparticle (NP) diffusion in polymers is a prerequisite to obtain polymer nanocomposites (PNCs) with desired dynamical and rheological properties, and to achieve targeted delivery of nanomedicine in biological systems. Here we determinate the suppression mechanism of direct NP-polymer attraction to hamper the NP mobility in adsorbing polymers, and then quantify the dependence of the effective viscosity \eta_{eff} felt by the NP on the adsorption duration \tau_{ads} of polymers on the NP, using scaling theory analysis and molecular dynamics (MD) simulations...
May 23, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28535331/computer-and-mobile-technology-interventions-for-self-management-in-chronic-obstructive-pulmonary-disease
#9
REVIEW
Catherine McCabe, Margaret McCann, Anne Marie Brady
BACKGROUND: Chronic obstructive pulmonary disease (COPD) is characterised by airflow obstruction due to an abnormal inflammatory response of the lungs to noxious particles or gases, for example, cigarette smoke. The pattern of care for people with moderate to very severe COPD often involves regular lengthy hospital admissions, which result in high healthcare costs and an undesirable effect on quality of life. Research over the past decade has focused on innovative methods for developing enabling and assistive technologies that facilitate patient self-management...
May 23, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28535266/mechanism-of-bacterial-gene-rearrangement-spra-catalyzed-precise-dna-recombination-and-its-directionality-control-by-sprb-ensure-the-gene-rearrangement-and-stable-expression-of-spsm-during-sporulation-in-bacillus-subtilis
#10
Kimihiro Abe, Takuo Takamatsu, Tsutomu Sato
A sporulation-specific gene, spsM, is disrupted by an active prophage, SPβ, in the genome of Bacillus subtilis. SPβ excision is required for two critical steps: the onset of the phage lytic cycle and the reconstitution of the spsM-coding frame during sporulation. Our in vitro study demonstrated that SprA, a serine-type integrase, catalyzed integration and excision reactions between attP of SPβ and attB within spsM, while SprB, a recombination directionality factor, was necessary only for the excision between attL and attR in the SPβ lysogenic chromosome...
May 23, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28535174/probabilistic-multiple-bias-modelling-applied-to-the-canadian-data-from-the-interphone-study-of-mobile-phone-use-and-risk-of-glioma-meningioma-acoustic-neuroma-and-parotid-gland-tumors
#11
F Momoli, J Siemiatycki, M L McBride, M-É Parent, L Richardson, D Bedard, R Platt, M Vrijheid, E Cardis, D Krewski
We undertook a re-analysis of the Canadian data from the thirteen-country INTERPHONE case-control study (2001-2004), which evaluated the association between mobile phone use and risk of brain, acoustic neuroma, and parotid gland tumors. The main publication of the multinational INTERPHONE study concluded that "biases and errors prevent a causal interpretation". We applied a probabilistic multiple-bias model to address possible biases simultaneously, using validation data from billing records and non-participant questionnaires as information on recall error and selective participation...
May 23, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28535037/hybrid-doping-of-few-layer-graphene-via-a-combination-of-intercalation-and-surface-doping
#12
Ahmed E Mansour, Ahmad R Kirmani, Stephen Barlow, Seth R Marder, Aram Amassian
Surface molecular doping of graphene has been shown to modify its work function and increase its conductivity. However, the associated shifts in work function and increases in carrier concentration are highly coupled and limited by the surface coverage of dopant molecules on graphene. Here we show that few-layer graphene (FLG) can be doped using a hybrid approach, effectively combining surface doping by larger (metal-)organic molecules, while smaller molecules, such as Br2 and FeCl3, intercalate into the bulk...
May 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28535032/applying-thienyl-side-chains-and-different-%C3%AF-bridge-to-aromatic-side-chain-substituted-indacenodithiophene-based-small-molecule-donors-for-high-performance-organic-solar-cells
#13
Jin-Liang Wang, Kai-Kai Liu, Sha Liu, Feng Liu, Hongbin Wu, Yong Cao, Thomas P Russell
A pair of linear tetrafluorinated small molecular donors, named as ThIDTTh4F and ThIDTSe4F, which are with tetrathienyl-substituted IDT as electron-rich central core, electron-deficient difluorobenzothiadiazole as acceptor units, and donor end-capping groups, but having differences in the π-bridge (thiophene and selenophene), were successfully synthesized and evaluated as donor materials in organic solar cells. Such π-bridge and core units in these small molecules play a decisive role in the formation of the nanoscale separation of the blend films, which were systematically investigated through absorption spectra, grazing incidence X-ray diffraction pattern, transmission electron microscopy images, resonant soft X-ray scattering profiles, and charge mobility measurement...
May 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28534958/mir-204-regulates-the-biological-behavior-of-breast-cancer-mcf-7-cells-by-directly-targeting-foxa1
#14
Si-Qiao Shen, Lan-Shan Huang, Xiao-Ling Xiao, Xiao-Fei Zhu, Dan-Dan Xiong, Xue-Mei Cao, Kang-Lai Wei, Gang Chen, Zhen-Bo Feng
MicroRNAs (miRNAs) are short, non-protein-coding RNAs and transcripts that are 18-24 nt in length. miR-204 was first identified as an anti-oncogene and is reported to be downregulated in non-small cell lung cancer, glioma, gastric and thyroid cancer. Recent studies have proposed that a low level of miR-204 expression is associated with tumor progression and disease outcome in breast cancer. Forkhead box A1 (FOXA1), a transcription factor, plays a crucial role in breast cancer and has been predicted as a target of miR-204...
May 16, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28534909/engineering-band-gap-and-electronic-transport-in-organic-inorganic-halide-perovskites-by-superlattices
#15
Rahul Singh, Ranjith Kottokkaran, Vikram L Dalal, Ganesh Balasubramanian
Organic/inorganic lead and tin halide perovskites (CH3NH3PbI3 and CH3NH3SnI3) have been promising for photovoltaics because of their high charge carrier mobility, and large absorption coefficient and diffusion length. Both these perovskites also have a notable Seebeck coefficient, depending on the doping level, indicating their potential as thermoelectrics. We create superlattices of these hybrid organic-inorganic halide perovskites and investigate electronic transport through them using first principles computations and experiments...
May 23, 2017: Nanoscale
https://www.readbyqxmd.com/read/28534848/development-and-design-of-next-generation-head-mounted-ambulatory-microdose-positron-emission-tomography-am-pet-system
#16
Samantha Melroy, Christopher Bauer, Matthew McHugh, Garret Carden, Alexander Stolin, Stan Majewski, Julie Brefczynski-Lewis, Thorsten Wuest
Several applications exist for a whole brain positron-emission tomography (PET) brain imager designed as a portable unit that can be worn on a patient's head. Enabled by improvements in detector technology, a lightweight, high performance device would allow PET brain imaging in different environments and during behavioral tasks. Such a wearable system that allows the subjects to move their heads and walk-the Ambulatory Microdose PET (AM-PET)-is currently under development. This imager will be helpful for testing subjects performing selected activities such as gestures, virtual reality activities and walking...
May 19, 2017: Sensors
https://www.readbyqxmd.com/read/28534664/predict-the-medicare-functional-classification-level-k-level-using-the-amputee-mobility-predictor-in-people-with-unilateral-transfemoral-and-transtibial-amputation-a-pilot-study
#17
Michael P Dillon, Matthew J Major, Brian Kaluf, Yuri Balasanov, Stefania Fatone
BACKGROUND: While Amputee Mobility Predictor scores differ between Medicare Functional Classification Levels (K-level), this does not demonstrate that the Amputee Mobility Predictor can accurately predict K-level. OBJECTIVES: To determine how accurately K-level could be predicted using the Amputee Mobility Predictor in combination with patient characteristics for persons with transtibial and transfemoral amputation. STUDY DESIGN: Prediction...
May 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28534606/standardized-reporting-of-functioning-information-on-icf-based-common-metrics
#18
Birgit Prodinger, Alan Tennant, Gerold Stucki
BACKGROUND: In clinical practice and research a variety of clinical data collection tools are used to collect information on people's functioning for clinical practise and research and National Health Information Systems. Reporting on ICF-based common metrics enables standardized documentation of functioning information in national health information systems. OBJECTIVE: The objective of this methodological note on applying the ICF in rehabilitation is to demonstrate how to report functioning information collected with a data collection tool on ICF-based common metrics...
May 23, 2017: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28534391/understanding-electron-transport-in-disk-shaped-triphenylene-tris-naphthaleneimidazole-s-through-structural-modification-and-theoretical-investigation
#19
Yue Zhang, David A Hanifi, M Paz Fernandez-Liencres, Liana M Klivansky, Biwu Ma, Amparo Navarro, Yi Liu
Disk-shaped molecules with large aromatic π-surface are a class of organic semiconductors of which the charge carrier transport properties could be greatly facilitated by preferred intermolecular stacking of the π-surfaces. The optical and electronic properties are not only determined by the core aromatic structure of these disk-shaped molecules, but also strongly dependent on the sidechains, which directly impact the molecular self-assembly behavior in condensed phases. Triphenylene-tris(naphthaleneimidazole) (TP-TNI) is a recently reported n-type semiconductor featuring a large π-core and branched sidechains with an electron transporting mobility reaching 10-4 cm2V-1s-1...
May 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28534316/relationship-between-air-quality-and-outdoor-exercise-behavior-in-china-a-novel-mobile-based-study
#20
Liang Hu, Li Zhu, Yaping Xu, Jiaying Lyu, Kellie Imm, Lin Yang
PURPOSE: Based on data collected from an exercise app, the study aims to provide empirical evidence on the relationship between air quality and patterns of outdoor exercise in China. METHODS: Objective outdoor exercise data spanning 160 days were collected from 153 users of an exercise app, Tulipsport in China. Each exercise mode (running, biking, and walking, respectively) was organized into five air quality categories based on Air Quality Index (AQI): excellent, good, mild pollution, moderate pollution, and serious pollution...
May 22, 2017: International Journal of Behavioral Medicine
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