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https://www.readbyqxmd.com/read/28749506/the-origin-of-high-electrocatalytic-activity-of-hydrogen-peroxide-reduction-reaction-by-a-g-c3n4-hopg-sensor
#1
C G Gomez, A M Silva, M C Strumia, L B Avalle, M I Rojas
Graphitic carbon nitride (g-C3N4) was synthesized from a low-cost precursor by means of a thermal process. The product was characterized by several spectroscopic techniques and the crystallinity was analyzed by X-ray diffraction. In the manufacture of the sensor, g-C3N4 was chemically exfoliated and a film was placed on the surface of a Highly Oriented Pyrolytic Graphite (HOPG). We compared the electrocatalytic activities of g-C3N4/HOPG and pristine HOPG surfaces as sensors for H2O2 quantification in buffer solution at pH 7...
July 27, 2017: Nanoscale
https://www.readbyqxmd.com/read/28749503/crab-shell-induced-synthesis-of-ordered-macroporous-carbon-nanofiber-arrays-coupled-with-mnco2o4-nanoparticles-as-bifunctional-oxygen-catalysts-for-rechargeable-zn-air-batteries
#2
Duan Bin, Ziyang Guo, Andebet Gedamu Tamirat, Yuanyuan Ma, Yonggang Wang, Yongyao Xia
The oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are traditionally carried out using noble metals (such as Pt) and metal oxides (such as RuO2 and IrO2) as catalysts, respectively. Nevertheless, several key issues such as high cost, poor stability, and detrimental environmental effects limit the catalytic activity of these noble metal- and metal oxide-based catalysts. Herein, we have designed and synthesized macroporous carbon nanofiber arrays by using a natural crab shell template. Subsequently, spinel MnCo2O4 nanoparticles were embedded into the nitrogen-doped macroporous carbon nanofiber arrays (NMCNAs) by a hydrothermal method...
July 27, 2017: Nanoscale
https://www.readbyqxmd.com/read/28748444/sustained-growth-of-a-university-based-endocrine-surgery-program-over-10-years
#3
Shonan Sho, Emily S Singer, Eric Kwok, Randi Hissom, Avital Harari, Masha J Livhits, Michael W Yeh
BACKGROUND: Endocrine surgery continues to mature as a subspecialty field. We describe the clinical performance of an academic endocrine surgery program (ESP) over its first 10 years. METHODS: We examined all endocrine procedures performed during the 10-year period (2006-2015) following the inception of the ESP. Institutional and state-level data on case volume, patient geographic origin, and hospital-side costs were obtained. RESULTS: Endocrine case volume increased by approximately ninefold over the study period (from 102 cases in 2006 to 919 cases in 2015)...
July 26, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28748244/a-high-performance-and-low-cost-hole-transporting-layer-for-efficient-and-stable-perovskite-solar-cells
#4
Md Arafat Mahmud, Naveen Kumar Elumalai, Mushfika Baishakhi Upama, Dian Wang, Vinicius R Gonçales, Matthew Wright, Cheng Xu, Faiazul Haque, Ashraf Uddin
Here we report a small molecule oxidant 2,3,5,6-tetrafluoro-7,7,8,8-tetracyano-quinodimethane (F4TCNQ) doped, low cost 2',7'-bis(bis(4-methoxyphenyl)amino)spiro[cyclopenta[2,1-b:3,4-b']dithiophene-4,9'-fluorene] (FDT) hole transporting layer (HTL) for efficient mixed organic cation based MA0.6FA0.4PbI3 (MA = methyl ammonium, FA = formamidinium) perovskite solar cells (PSCs), fabricated via a highly reproducible controlled nucleation assisted restricted volume solvent annealing method, having full temperature compatibility with flexible substrates...
July 27, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28747640/structural-and-physical-determinants-of-the-proboscis-sucking-pump-complex-in-the-evolution-of-fluid-feeding-insects
#5
Konstantin G Kornev, Arthur A Salamatin, Peter H Adler, Charles E Beard
Fluid-feeding insects have evolved a unique strategy to distribute the labor between a liquid-acquisition device (proboscis) and a sucking pump. We theoretically examined physical constraints associated with coupling of the proboscis and sucking pump into a united functional organ. Classification of fluid feeders with respect to the mechanism of energy dissipation is given by using only two dimensionless parameters that depend on the length and diameter of the proboscis food canal, maximum expansion of the sucking pump chamber, and chamber size...
July 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28747517/a-soft-robotic-exosuit-improves-walking-in-patients-after-stroke
#6
Louis N Awad, Jaehyun Bae, Kathleen O'Donnell, Stefano M M De Rossi, Kathryn Hendron, Lizeth H Sloot, Pawel Kudzia, Stephen Allen, Kenneth G Holt, Terry D Ellis, Conor J Walsh
Stroke-induced hemiparetic gait is characteristically slow and metabolically expensive. Passive assistive devices such as ankle-foot orthoses are often prescribed to increase function and independence after stroke; however, walking remains highly impaired despite-and perhaps because of-their use. We sought to determine whether a soft wearable robot (exosuit) designed to supplement the paretic limb's residual ability to generate both forward propulsion and ground clearance could facilitate more normal walking after stroke...
July 26, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28747408/respiratory-muscle-endurance-training-reduces-the-o2-cost-of-cycling-and-perceived-exertion-in-obese-adolescents
#7
Desy Salvadego, Alessandro Sartorio, Fiorenza Agosti, Gabriella Tringali, Alessandra Patrizi, Miriam Isola, Antonella LoMauro, Andrea Aliverti, Bruno Grassi
In obesity the increased O2 cost of breathing negatively affects the O2 cost of exercise and exercise tolerance. The purpose of the study was to determine whether, in obese adolescents, the addition of respiratory muscle endurance training (RMET) (isocapnic hyperpnea) to a standard body mass reduction program decreases the O2 cost of exercise and perceived exertion and increases exercise tolerance. 9 male obese adolescents (16.0±1.4 years [x±SD], body mass 114.4±22.3 kg) underwent 3 weeks of RMET (5 days/week); 8 age-and sex- matched obese adolescents underwent the standard body mass reduction program (CTRL)...
July 26, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28747321/the-affordable-care-act-reduced-socioeconomic-disparities-in-health-care-access
#8
Kevin Griffith, Leigh Evans, Jacob Bor
The United States has the largest socioeconomic disparities in health care access of any wealthy country. We assessed changes in these disparities in the United States under the Affordable Care Act (ACA). We used survey data for the period 2011-15 from the Behavioral Risk Factor Surveillance System to assess trends in insurance coverage, having a personal doctor, and avoiding medical care due to cost. All analyses were stratified by household income, education level, employment status, and home ownership status...
July 26, 2017: Health Affairs
https://www.readbyqxmd.com/read/28747151/comparative-analysis-of-targeted-long-read-sequencing-approaches-for-characterization-of-a-plant-s-immune-receptor-repertoire
#9
Michael Giolai, Pirita Paajanen, Walter Verweij, Kamil Witek, Jonathan D G Jones, Matthew D Clark
BACKGROUND: The Oxford Nanopore Technologies MinION™ sequencer is a small, portable, low cost device that is accessible to labs of all sizes and attractive for in-the-field sequencing experiments. Selective breeding of crops has led to a reduction in genetic diversity, and wild relatives are a key source of new genetic resistance to pathogens, usually via NLR immune receptor-encoding genes. Recent studies have demonstrated how crop NLR repertoires can be targeted for sequencing on Illumina or PacBio (RenSeq) and the specific gene conveying pathogen resistance identified...
July 26, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28746267/the-baltodano-breast-reduction-score-a-nationwide-multi-institutional-validated-approach-to-reducing-surgical-site-morbidity
#10
Pablo A Baltodano, Myrna Eliann Reinhardt, Ashar Ata, Usamah F Simjee, Malcolm Z Roth, Ashit Patel
BACKGROUND: Breast reduction remains associated with significantly higher rates of overall morbidity, superficial surgical-site infections, and wound disruptions. The authors developed a validated risk model to identify patients at higher risk for postoperative surgical-site morbidity after breast reduction. METHODS: A retrospective review was performed of all women undergoing breast reduction from the American College of Surgeons National Surgical Quality Improvement Program 2005 to 2012 data...
August 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28745779/-emissions-from-dairy-industry-and-the-influence-of-herd-management
#11
Ulrich Dämmgen, Wilfried Brade, Hans-Dieter Haenel, Claus Rösemann, Jürgen Dämmgen, Ulrich Meyer
The purpose of this paper is to identify specific emission-reduction opportunities in dairy herds arising from aspects of useful herd management with the potential to reduce emissions, which are within the scope of veterinary activities. In future, it might be one of a veterinarian's advisory capacities to deal with the aspect of climate and environmental protection in animal husbandry. The models involved are similar to those of the national agricultural emission inventory. They allow quantifying the impacts of improved animal health, extended productive lifespan and grazing of an entire dairy herd (cows, calves, heifers and bulls) on emissions from the herd itself, in addition to those originating from the entire production chain, including provision of primary energy, water, feed production and processing...
July 26, 2017: Tierärztliche Praxis. Ausgabe G, Grosstiere/Nutztiere
https://www.readbyqxmd.com/read/28745578/cost-effectiveness-of-g5-mobile-continuous-glucose-monitoring-cgm-device-compared-with-self-monitoring-of-blood-glucose-smbg-alone-for-people-with-type-1-diabetes-from-the-canadian-societal-perspective
#12
Shraddha Chaugule, Claudia Graham
AIMS: To evaluate the cost-effectiveness of real-time continuous glucose monitoring (CGM) compared to self-monitoring of blood glucose (SMBG) alone in people with type 1 diabetes (T1DM) using multiple daily injections (MDI) from the Canadian societal perspective. METHODS: The IMS CORE Diabetes Model (v.9.0) was used to assess the long-term (50 years) cost-effectiveness of real-time CGM (G5 Mobile CGM System; Dexcom, Inc., San Diego, CA) compared with SMBG alone for a cohort of adults with poorly-controlled T1DM...
July 26, 2017: Journal of Medical Economics
https://www.readbyqxmd.com/read/28745499/valuing-the-air-quality-effects-of-biochar-reductions-on-soil-no-emissions
#13
Ghasideh Pourhashem, Quazi Ziaur Rasool, Rui Zhang, Kenneth B Medlock, Daniel S Cohan, Caroline A Masiello
While it is clear that biochar can alter soil N2O emissions, data on NO impacts are scarce. Reports range from 0-67% soil NO emission reductions post-biochar amendment. We use regional air quality and health cost models to assess how these soil NO reductions could influence U.S. air quality and health costs. We find that at 67% soil NO reduction, widespread application of biochar to fertilized agricultural soils could reduce O3 by up to 2.4ppb and PM2.5 by up to 0.15µg/m3 in some regions. Modeled biochar-mediated health benefits are up to $4...
July 26, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28745491/controlled-construction-of-supported-cu-sites-and-their-stabilization-in-mil-100-fe-efficient-adsorbents-for-benzothiophene-capture
#14
Qiu-Xia He, Yao Jiang, Peng Tan, Xiao-Qin Liu, Ju-Xiang Qin, Lin-Bing Sun
Cu(+)-containing materials have drawn much attention in various applications because they are versatile, nontoxic, and low-cost. However, the difficulty of selective reduction and the poor stability of Cu(+) species are now pretty much the agendas. Here, controlled construction of supported Cu(+) sites in MIL-100(Fe) was realized under mild conditions (200 °C, 5 h) via a vapor-reduction strategy (VRS). Remarkably, the yield of Cu(+) reaches 100%, which is quite higher than the traditional high-temperature autoreduction method with a yield less than 50% even at 700 °C for 12 h...
July 27, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28745293/biosynthesis-of-silver-nanoparticles-by-pseudomonas-spp-isolated-from-effluent-of-an-electroplating-industry
#15
Kapil Punjabi, Snehal Yedurkar, Sejal Doshi, Sunita Deshapnde, Shashikant Vaidya
The aim of this study was to isolate and screen bacteria from soil and effluent of electroplating industries for the synthesis of silver nanoparticles and characterize the potential isolate. Soil and effluent of electroplating industries from Mumbai were screened for bacteria capable of synthesizing silver nanoparticles. From two soils and eight effluent samples 20 bacterial isolates were obtained, of these, one was found to synthesize silver nanoparticles. Synthesis of silver nanoparticle by bacteria was confirmed by undertaking characterization studies of nanoparticles that involved spectroscopy and electron microscopic techniques...
August 2017: IET Nanobiotechnology
https://www.readbyqxmd.com/read/28745251/-using-thromboelastography-to-measure-coagulation-following-massive-blood-loss
#16
M C A Müller, G A E Ponjee
Thromboelastography is becoming increasingly important for diagnosing coagulation disorders in patients with massive blood loss. This whole-blood measurement provides information about the speed of clot formation, clot strength, and degree of fibrinolysis. The result can be used as a basis for making a faster and better choice of a suitable blood product for the patient with severe blood loss. This technique can be carried out simply and quickly as a rapid test ('point-of-care test') or in a central laboratory...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28745094/nich-at-its-best-for-diabetes-at-its-worst-texting-teens-and-their-caregivers-for-better-outcomes
#17
David V Wagner, Samantha A Barry, Maggie Stoeckel, Lena Teplitsky, Michael A Harris
BACKGROUND: There is growing evidence for the feasibility of text-based interventions for pediatric patients with type 1 diabetes (T1D). However, less is known regarding whether the use of personalized text messages with high-risk youth and their caregivers is associated with improvements in youth health. This study examines the use of diabetes-specific texts and associated health outcomes for participants of the Novel Interventions in Children's Healthcare (NICH) program. METHODS: Text messages sent to youth with T1D and their caregivers during NICH intervention were coded regarding diabetes relevance and adherence-related content...
May 2017: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/28745091/continuous-glucose-monitoring-use-in-type-1-diabetes-longitudinal-analysis-demonstrates-meaningful-improvements-in-hba1c-and-reductions-in-health-care-utilization
#18
Christopher G Parkin, Claudia Graham, John Smolskis
BACKGROUND: Real-time continuous glucose monitoring (rtCGM) improves glycemic control in type 1 diabetes (T1D) patients treated with continuous subcutaneous insulin infusion (CSII). However, the benefits of rtCGM in T1D patients treated with multiple daily insulin injection (MDI) therapy has not been well studied. We explored the effects of rtCGM versus self-monitoring of blood glucose (SMBG) on clinical outcomes within a large T1D population treated with either CSII or MDI therapy. METHODS: This retrospective, longitudinal analysis utilized datasets from T1D patients enrolled in a commercial health plan to assess changes in HbA1c in 187 naïve to rtCGM users and 6260 SMBG users...
May 2017: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/28744125/a-top-down-technique-to-improve-the-solubility-and-bioavailability-of-aceclofenac-in-vitro-and-in-vivo-studies
#19
Reema Narayan, Abhyuday Pednekar, Dipshikha Bhuyan, Chaitra Gowda, K B Koteshwara, Usha Yogendra Nayak
The aim of the present work was to tackle the solubility issue of a biopharmaceutics classification system (BCS)-II drug, aceclofenac. Although a number of attempts to increase the aqueous solubility have been made, none of the methods were taken up for scale-up. Hence size reduction technique by a top-down approach using wet milling process was utilized to improve the solubility and, consequently, the dissolution velocity of aceclofenac. The quality of the final product was ensured by Quality by Design approach wherein the effects of critical material attributes and critical process parameters were assessed on the critical quality attributes (CQAs) of nanocrystals...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28744103/clinical-utility-of-evolocumab-in-the-management-of-hyperlipidemia-patient-selection-and-follow-up
#20
REVIEW
Dave L Dixon, Leo F Buckley, Cory R Trankle, Dinesh Kadariya, Antonio Abbate
Inhibition of PCSK9 is a novel therapeutic strategy aimed at reducing low-density-lipoprotein cholesterol (LDL-C) and cardiovascular risk. Evolocumab is a fully humanized monoclonal antibody that inhibits PCSK9, an enzyme that binds to LDL receptors and prevents them from recycling to the hepatocyte surface. Clinical trials have demonstrated 50%-70% reductions in LDL-C with evolocumab when used in combination with statin therapy. The recent FOURIER trial demonstrated that evolocumab further reduces cardiovascular events, but not mortality, in high-risk patients already receiving statin therapy...
2017: Drug Design, Development and Therapy
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