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https://www.readbyqxmd.com/read/28642590/toughening-fe-based-amorphous-coatings-by-reinforcement-of-amorphous-carbon
#1
Wei Wang, Cheng Zhang, Zhi-Wei Zhang, Yi-Cheng Li, Muhammad Yasir, Hai-Tao Wang, Lin Liu
Toughening of Fe-based amorphous coatings meanwhile maintaining a good corrosion resistance remains challenging. This work reports a novel approach to improve the toughness of a FeCrMoCBY amorphous coating through in-situ formation of amorphous carbon reinforcement without reducing the corrosion resistance. The Fe-based composite coating was prepared by high velocity oxy-fuel (HVOF) thermal spraying using a pre-mixed Fe-based amorphous/nylon-11 polymer feedstock powders. The nylon-11 powders were in-situ carbonized to amorphous carbon phase during thermal spraying process, which homogeneously distributed in the amorphous matrix leading to significant enhancement of toughness of the coating...
June 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28641175/atmospheric-dust-deposition-on-soils-around-an-abandoned-fluorite-mine-hammam-zriba-ne-tunisia
#2
Chaima Djebbi, Fredj Chaabani, Oriol Font, Ignasi Queralt, Xavier Querol
The present study focuses on the eolian dispersion and dust deposition, of major and trace elements in soils in a semi-arid climate, around an old fluorite (CaF2) and barite (BaSO4) mine, located in Hammam Zriba in Northern Tunisia. Ore deposits from this site contain a high amount of metal sulphides constituting heavy metal pollution in the surrounding environment. Samples of waste from the surface of mine tailings and agricultural topsoil samples in the vicinity of the mine were collected. The soil samples and a control sample from unpolluted area, were taken in the direction of prevailing northwest and west winds...
June 19, 2017: Environmental Research
https://www.readbyqxmd.com/read/28636832/nutrient-deficiencies-are-common-prior-to-bariatric-surgery
#3
Leigh A Frame-Peterson, Robin D Megill, Suzanne Carobrese, Michael Schweitzer
Obesity, defined as a body mass index >30 kg/m(2), is a growing worldwide epidemic currently effecting 1 in 10 adults, with rates as high as 40% in the United States. The only proven long-term treatment of severe obesity on a population level is surgical modification of the gastrointestinal anatomy to induce weight loss, termed bariatric surgery. With adequate physician guidance and appropriate candidate criteria, bariatric surgery is an option for effective long-term treatment of obesity and its related comorbidities...
June 1, 2017: Nutrition in Clinical Practice
https://www.readbyqxmd.com/read/28625693/long-term-functional-outcomes-after-replacement-of-the-esophagus-in-pediatric-patients-a-systematic-literature-review
#4
REVIEW
Stefano Garritano, Tomoyuki Irino, Chiara Maria Scandavini, Andrianos Tsekrekos, Lars Lundell, Ioannis Rouvelas
BACKGROUND: The indications of esophageal replacement (ER) in pediatric patients include long gap esophageal atresia (LGEA), intractable post-corrosive esophageal strictures (PCES), and some rare esophageal diseases. Various conduits and procedures are currently used worldwide with a lack of consensus regarding the ideal substitute to replace the esophagus replacement. The short-term outcomes of these advanced procedures are well known; there are few data available describing long-term functional outcomes of these patients with long life expectancy...
June 8, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28624531/the-short-to-mid-term-symptom-prevalence-of-dumping-syndrome-after-primary-gastric-bypass-surgery-and-its-impact-on-health-related-quality-of-life
#5
Marloes Emous, Bruce H R Wolffenbuttel, Eric Totté, André P van Beek
BACKGROUND: Early and late dumping are complications of gastric bypass surgery. Early dumping occurs within an hour after eating, when the emptying of food into the small intestine triggers rapid fluid shifts into the intestinal lumen and the release of gastrointestinal hormones, resulting in gastrointestinal and vasomotor symptoms. Late dumping occurs between 1 and 3 hours after carbohydrate ingestion and is caused by an exaggerated insulin release, resulting in hypoglycemia. Almost no data are currently available on the prevalence of early and late dumping or their impact on health-related quality of life (QoL)...
April 28, 2017: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/28621993/dark-matter-search-in-a-proton-beam-dump-with-miniboone
#6
A A Aguilar-Arevalo, M Backfish, A Bashyal, B Batell, B C Brown, R Carr, A Chatterjee, R L Cooper, P deNiverville, R Dharmapalan, Z Djurcic, R Ford, F G Garcia, G T Garvey, J Grange, J A Green, W Huelsnitz, I L de Icaza Astiz, G Karagiorgi, T Katori, W Ketchum, T Kobilarcik, Q Liu, W C Louis, W Marsh, C D Moore, G B Mills, J Mirabal, P Nienaber, Z Pavlovic, D Perevalov, H Ray, B P Roe, M H Shaevitz, S Shahsavarani, I Stancu, R Tayloe, C Taylor, R T Thornton, R Van de Water, W Wester, D H White, J Yu
The MiniBooNE-DM Collaboration searched for vector-boson mediated production of dark matter using the Fermilab 8-GeV Booster proton beam in a dedicated run with 1.86×10^{20} protons delivered to a steel beam dump. The MiniBooNE detector, 490 m downstream, is sensitive to dark matter via elastic scattering with nucleons in the detector mineral oil. Analysis methods developed for previous MiniBooNE scattering results were employed, and several constraining data sets were simultaneously analyzed to minimize systematic errors from neutrino flux and interaction rates...
June 2, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28619742/postgastric-bypass-hypoglycaemia-in-a-patient-with-end-stage-renal-disease-a-diagnostic-and-management-pitfall
#7
Sameen Khalid, Anika Bilal, F N U Asad-Ur-Rahman, Richard Pratley
Roux-en-Y gastric bypass (RYGB) surgery is currently one of the most popular procedures to aid weight loss. Hypoglycaemia associated with gastric bypass surgery is an underdiagnosed but life-threatening potential consequence of the surgical procedure. We present a case of a 44-year-old woman with end-stage renal disease presenting with refractory hypoglycaemia after 10 years of RYGB. Extensive history and work-up excluded medications, renal disease, insulinoma and dumping syndrome as the cause of hypoglycaemia...
June 15, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28618276/common-explosives-tnt-rdx-hmx-and-their-fate-in-the-environment-emphasizing-bioremediation
#8
REVIEW
Soumya Chatterjee, Utsab Deb, Sibnarayan Datta, Clemens Walther, Dharmendra K Gupta
Explosive materials are energetic substances, when released into the environment, contaminate by posing toxic hazards to environment and biota. Throughout the world, soils are contaminated by such contaminants either due to manufacturing operations, military activities, conflicts of different levels, open burning/open detonation (OB/OD), dumping of munitions etc. Among different forms of chemical explosives, 2,4,6-trinitrotoluene (TNT), hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX), and octahydro-1,3,5,7-tetranitro- 1,3,5,7-tetrazocine (HMX) are most common...
June 4, 2017: Chemosphere
https://www.readbyqxmd.com/read/28616741/ecological-risk-assessment-of-an-open-dumping-site-at-mehmood-booti-lahore-pakistan
#9
Asifa Alam, Amtul Bari Tabinda, Abdul Qadir, Talib E Butt, Sidra Siddique, Adeel Mahmood
A robust risk assessment of Mehmood Booting Open Dumping (MBOD) site has been carried out by developing holistic risk assessment framework. Framework mainly comprises on baseline study, hazard identification, and risk quantification and evaluation. Physico-chemical analysis of groundwater and leachate, health risk assessment, and estimation of gas emissions from the site were carried out for risk evaluation. LandGEM 3.02 modelling software was used to measure the gas emissions. Analysis of leachate showed that all parameters were exceeding the WHO standard limit...
June 15, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28609852/engaging-with-residents-perceived-risks-and-benefits-about-technologies-as-a-way-of-resolving-remediation-dilemmas
#10
Jason Prior, Tapan Rai
In recent decades the diversity of remediation technologies has increased significantly, with the breadth of technologies ranging from dig and dump to emergent technologies like phytoremediation and nanoremediation. The benefits of these technologies to the environment and human health are believed to be substantial. However, they also potentially constitute risks. Whilst there is a growing body of knowledge about the risks and benefits of these technologies from the perspective of experts, little is known about how residents perceive the risks and benefits of the application of these technologies to address contaminants in their local environment...
June 9, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28602427/mechanical-characterization-of-municipal-solid-waste-from-two-waste-dumps-at-delhi-india
#11
B J Ramaiah, G V Ramana, Manoj Datta
The article presents the physical and mechanical properties of the emplaced municipal solid waste (MSW) recovered from different locations of the Ghazipur and Okhla dumps both located at Delhi, India. Mechanical compressibility and shear strength of the collected MSW were evaluated using a 300×300mm direct shear (DS) shear box. Compression ratio (Cc') of MSW at these two dumps varied between 0.11 and 0.17 and is falling on the lower bound of the range (0.1-0.5) of the data reported in the literature for MSW...
June 8, 2017: Waste Management
https://www.readbyqxmd.com/read/28596598/application-of-high-rate-integrated-anaerobic-aerobic-biogranular-activated-carbon-sequencing-batch-reactor-iana-biogacsbr-for-treating-strong-municipal-landfill-leachate
#12
Meghdad Pirsaheb, Hooshyar Hossini, Marius Sebastia Secula, Molouk Parvaneh, Ghulam Md Ashraf
The aim of the present study is to evaluate the application of high rate integrated anaerobic-aerobic/biogranular activated carbon sequencing batch reactor (IAnA-BioGACSBR) to treat raw strong leachate from open dumping of municipal solid waste. The influence of two important and effective independent variables, COD concentrations and volumetric filling rate with GAC, onto the leachate treatment were investigated. Three responses such as TKN, BOD and COD were considered for evaluating the interaction of parameters...
June 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28595406/an-alternative-laser-driven-photodissociation-mechanism-of-pyrrole-via-%C3%AF-%C3%AF-1%C3%A2-s0-conical-intersection
#13
K R Nandipati, Z Lan, H Singh, S Mahapatra
A first principles quantum dynamics study of N-H photodissociation of pyrrole on the S0-(1)πσ(*)(A21) coupled electronic states is carried out with the aid of an optimally designed UV-laser pulse. A new photodissociation path, as compared to the conventional barrier crossing on the πσ*1 state, opens up upon electronic transitions under the influence of pump-dump laser pulses, which efficiently populate both the dissociation channels. The interplay of electronic transitions due both to vibronic coupling and the laser pulse is observed in the control mechanism and discussed in detail...
June 7, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28583926/postmating-sexual-selection-and-the-enigmatic-jawed-genitalia-of-callosobruchus-subinnotatus
#14
Merel M van Haren, Johanna Liljestrand Rönn, Menno Schilthuizen, Göran Arnqvist
Insect genitalia exhibit rapid divergent evolution. Truly extraordinary structures have evolved in some groups, presumably as a result of post-mating sexual selection. To increase our understanding of this phenomenon, we studied the function of one such structure. The male genitalia of Callosobruchus subinnotatus (Coleoptera: Bruchinae) contain a pair of jaw-like structures with unknown function. Here, we used phenotypic engineering to ablate the teeth on these jaws. We then experimentally assessed the effects of ablation of the genital jaws on mating duration, ejaculate weight, male fertilization success and female fecundity, using a double-mating experimental design...
June 5, 2017: Biology Open
https://www.readbyqxmd.com/read/28580921/crystal-structure-of-the-active-form-of-native-human-thymidylate-synthase-in-the-absence-of-bound-substrates
#15
P Deschamps, S Réty, J Bareille, N Leulliot
Human thymidylate synthase (hTS) provides the sole de novo intracellular source of thymidine 5'-monophosphate (dTMP). hTS is required for DNA replication prior to cell division, making it an attractive target for anticancer chemotherapy and drug discovery. hTS binds 2'-deoxyuridine 5'-monophosphate (dUMP) and the folate co-substrate N(5),N(10)-methylenetetrahydrofolate (meTHF) in a pocket near the catalytic residue Cys195. The catalytic loop, which is composed of amino-acid residues 181-197, can adopt two distinct conformations related by a 180° rotation...
June 1, 2017: Acta Crystallographica. Section F, Structural Biology Communications
https://www.readbyqxmd.com/read/28579626/a-narrative-synthesis-of-illustrative-evidence-on-effects-of-capitation-payment-for-primary-care-lessons-for-ghana-and-other-low-middle-income-countries
#16
Francis-Xavier Andoh-Adjei, Ernst Spaan, Felix A Asante, Sylvester A Mensah, Koos van der Velden
OBJECTIVE: To analyse and synthesize available international experiences and information on the motivation for, and effects of using capitation as provider payment method in country health systems and lessons and implications for low/middle-income countries. METHODS: We did narrative review and synthesis of the literature on the effects of capitation payment on primary care. RESULTS: Eleven articles were reviewed. Capitation payment encourages efficiency: drives down cost, serves as critical source of income for providers, promotes adherence to guidelines and policies, encourages providers to work better and give health education to patients...
December 2016: Ghana Medical Journal
https://www.readbyqxmd.com/read/28579205/surgery-related-gastrointestinal-symptoms-in-a-prospective-study-of-bariatric-surgery-patients-3-year-follow-up
#17
Melissa A Kalarchian, Wendy C King, Michael J Devlin, Gretchen E White, Marsha D Marcus, Luis Garcia, Susan Z Yanovski, James E Mitchell
BACKGROUND: Having accurate information on bariatric surgery-related gastrointestinal (GI) symptoms is critical for patient care. OBJECTIVE: To report on surgery-related GI symptoms over the first 3 years following Roux-en-Y gastric bypass and laparoscopic adjustable gastric band. SETTING: Three academic medical centers in the United States. METHODS: As a substudy of the Longitudinal Assessment of Bariatric Surgery Consortium, 183 participants (pre-surgery median body mass index = 45...
April 4, 2017: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/28575832/estimates-of-water-and-solute-release-from-a-coal-waste-rock-dump-in-the-elk-valley-british-columbia-canada
#18
S A Villeneuve, S L Barbour, M J Hendry, S K Carey
Long term (1999 to 2014) flow and water quality data from a rock drain located at the base of a coal waste rock dump constructed in the Elk Valley, British Columbia was used to characterize the release of three solutes (NO3(-), Cl(-) and SO4(2-)) from the dump and obtain whole dump estimates of net percolation (NP). The concentrations of dump derived solutes in the rock drain water were diluted by snowmelt waters from the adjacent natural watershed during the spring freshet and reached a maximum concentration during the winter baseflow period...
May 30, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28574521/post-bariatric-surgery-patients-your-role-in-their-long-term-care
#19
Amy Kreykes, Hetal Choxi, Amy Rothberg
Nutritional deficiencies, decreased bone mineral density,and dumping syndrome are just some of the challenges these patients face. Here's how to optimize their care.
June 2017: Journal of Family Practice
https://www.readbyqxmd.com/read/28570291/the-lived-experience-of-midlife-women-with-major-depression
#20
Ching-Chu Li, Bih-Ching Shu, Yu-Ming Wang, Shih-Ming Li
BACKGROUND: Midlife, a significant developmental phase for women, is a period of biological, psychological, and social role changes. However, not all women transition smoothly into middle age, with those who experience depression typically bearing significantly greater physical and psychological discomforts in midlife. Despite the expanding body of research on women and depression, little is understood about how depressed women handle the midlife transition. PURPOSE: The aim of this study was to gain a deeper understanding about the lived experience of middle-aged women with major depression...
June 1, 2017: Journal of Nursing Research: JNR
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