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https://www.readbyqxmd.com/read/28445640/a-highly-active-and-stable-fe-n-c-catalyst-for-oxygen-depolarized-cathode-applications
#1
Jingkun Li, Qingying Jia, Shraboni Ghoshal, Wentao Liang, Sanjeev Mukerjee
Anion immunity towards oxygen reduction reaction (ORR) has tremendous implications in electrocatalysis with applications for fuel cells, metal-air batteries, and oxygen depolarized cathodes (ODCs) in anodic evolution of chlorine. The necessity for exploring ORR catalysts with immunity to anion adsorption is particularly significant considering that platinum group metal (PGM) catalysts are costly and highly vulnerable to impurities such as halides. Herein, we report a metal organic framework (MOF) derived Fe-N-C catalyst that exhibits a dramatically improved half-wave potential of 240 mV compared to the state-of-the-art RhxSy/C catalyst in a rotating disk electrode in the presence of Cl-...
April 26, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28445454/body-composition-at-birth-and-its-relationship-with-neonatal-anthropometric-ratios-the-newborn-body-composition-study-of-the-intergrowth-21st-project
#2
José Villar, Fabien A Puglia, Tanis R Fenton, L Cheikh Ismail, Eleonora Staines-Urias, Francesca Giuliani, Eric O Ohuma, Cesar G Victora, Peter Sullivan, Fernando C Barros, Ann Lambert, Aris T Papageorghiou, Roseline Ochieng, Yasmin A Jaffer, Douglas G Altman, Alison J Noble, Michael G Gravett, Manorama Purwar, Ruyan Pang, Ricardo Uauy, Stephen H Kennedy, Zulfiqar A Bhutta
BACKGROUND: We aimed to describe newborn body composition and identify which anthropometric ratio (weight/length; BMI; or ponderal index, PI) best predicts fat mass (FM) and fat-free mass (FFM). METHODS: Air-displacement plethysmography (PEA POD) was used to estimate FM, FFM and body fat percentage (BF%). Associations between FFM, FM and BF% and weight/length, BMI and PI were evaluated in 1,019 newborns using multivariate regression analysis. Charts for FM, FFM and BF% were generated using a prescriptive sub-sample (n=247)...
April 26, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28445417/ins-gnss-integration-for-aerobatic-flight-applications-and-aircraft-motion-surveying
#3
Edgar L V Hinüber, Christian Reimer, Tim Schneider, Michael Stock
This paper presents field tests of challenging flight applications obtained with a new family of lightweight low-power INS/GNSS (inertial navigation system/global satellite navigation system) solutions based on MEMS (micro-electro-mechanical- sensor) machined sensors, being used for UAV (unmanned aerial vehicle) navigation and control as well as for aircraft motion dynamics analysis and trajectory surveying. One key is a 42+ state extended Kalman-filter-based powerful data fusion, which also allows the estimation and correction of parameters that are typically affected by sensor aging, especially when applying MEMS-based inertial sensors, and which is not yet deeply considered in the literature...
April 26, 2017: Sensors
https://www.readbyqxmd.com/read/28445398/consensus-based-cooperative-control-based-on-pollution-sensing-and-traffic-information-for-urban-traffic-networks
#4
Antonio Artuñedo, Raúl M Del Toro, Rodolfo E Haber
Nowadays many studies are being conducted to develop solutions for improving the performance of urban traffic networks. One of the main challenges is the necessary cooperation among different entities such as vehicles or infrastructure systems and how to exploit the information available through networks of sensors deployed as infrastructures for smart cities. In this work an algorithm for cooperative control of urban subsystems is proposed to provide a solution for mobility problems in cities. The interconnected traffic lights controller (TLC) network adapts traffic lights cycles, based on traffic and air pollution sensory information, in order to improve the performance of urban traffic networks...
April 26, 2017: Sensors
https://www.readbyqxmd.com/read/28445051/potential-air-pollutant-emissions-and-permitting-classifications-for-two-biorefinery-process-designs-in-the-united-states
#5
Annika Eberle, Arpit Bhatt, Yimin Zhang, Garvin A Heath
Advanced biofuel production facilities (biorefineries), such as those envisioned by the United States (U.S.) Renewable Fuel Standard and U.S. Department of Energy's research and development programs, often lack historical air pollutant emissions data, which can pose challenges for obtaining air emission permits that are required for construction and operation. To help fill this knowledge gap, we perform a thorough regulatory analysis and use engineering process designs to assess the applicability of federal air regulations and quantify air pollutant emissions for two feasibility-level biorefinery designs...
April 26, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28444772/multi-atlas-approach-with-local-registration-goodness-weighting-for-mri-based-electron-density-mapping-of-head-and-neck-anatomy
#6
Reza Farjam, Neelam Tyagi, Harini Veeraraghavan, Aditya Apte, Kristen Zakian, Margie A Hunt, Joseph O Deasy
PURPOSE: The growing use of magnetic resonance imaging (MRI) as a substitute for computed tomography-based treatment planning requires the development of effective algorithms to generate electron density maps for treatment planning and patient setup verification. The purpose of this work was to develop a method to synthesize computerized tomography (CT) for MR-only radiotherapy of head and neck cancer patients. METHODS: The algorithm is based on registration of multiple patient datasets containing both MRI and CT images (a "multi-atlas" algorithm)...
April 26, 2017: Medical Physics
https://www.readbyqxmd.com/read/28444766/endoplasmic-reticulum-stress-mediates-distinct-impacts-of-sevoflurane-on-different-subfields-of-immature-hippocampus
#7
Gang Zhu, Lei Tao, Ronglin Wang, Ying Xue, Xingqin Wang, Shaosong Yang, Xude Sun, Guodong Gao, Zixu Mao, Qian Yang
Sevoflurane, a typical inhaled anesthetic, is widely used in patients of all ages during surgery. The negative effects, such as inducing cell death and damaging spatial memory, of sevoflurane on neurodevelopment have raised increasing concerns in recent years. However, the molecular mechanism remains unclear. The current study focused on the crucial role of endoplasmic reticulum (ER) stress in sevoflurane-induced hippocampal injury. Three-week-old rats were exposed to sevoflurane or control air for 5h with or without ER stress inhibitor (4-phenylbutyric acid, 4-PBA) injection...
April 26, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28444689/the-young-s-modulus-fracture-stress-and-fracture-strain-of-gellan-hydrogels-filled-with-whey-protein-microparticles
#8
Cherry Wing Yu Lam, Shinya Ikeda
Texture modifying abilities of whey protein microparticles are expected to be dependent on pH during heat-induced aggregation of whey protein in the microparticulation process. Therefore, whey protein microparticles were prepared at either pH 5.5 or 6.8 and their effects on small and large deformation properties of gellan gels containing whey protein microparticles as fillers were investigated. The majority of whey protein microparticles had diameters around 2 μm. Atomic force microscopy images showed that whey protein microparticles prepared at pH 6...
April 25, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28444645/outdoor-ambient-air-pollution-and-neurodegenerative-diseases-the-neuroinflammation-hypothesis
#9
REVIEW
Richard L Jayaraj, Eric A Rodriguez, Yi Wang, Michelle L Block
PURPOSE OF REVIEW: Accumulating research indicates that ambient outdoor air pollution impacts the brain and may affect neurodegenerative diseases, yet the potential underlying mechanisms are poorly understood. RECENT FINDINGS: The neuroinflammation hypothesis holds that elevation of cytokines and reactive oxygen species in the brain mediates the deleterious effects of urban air pollution on the central nervous system (CNS). Studies in human and animal research document that neuroinflammation occurs in response to several inhaled pollutants...
April 25, 2017: Current Environmental Health Reports
https://www.readbyqxmd.com/read/28444609/density-assessment-and-mapping-of-microorganisms-around-a-biocomposting-plant-in-sanandaj-iran
#10
Sanaz Rashidi, B Shahmoradi, Afshin Maleki, Kiomars Sharafi, Ebrahim Darvishi
Exposure to microorganisms can cause various diseases or exacerbate the excitatory responses, inflammation, dry cough and shortness of breath, reduced lung function, chronic obstructive pulmonary disease, and allergic response or allergic immune. The aim of the present study was to investigate the density of microorganisms around the air of processing facilities of a biocomposting plant. Each experiment was carried out according to ASTM E884-82 (2001) method. The samples were collected from inhaled air in four locations of the plant, which had a high traffic of workers and employees, including screen, conveyor belt, aerated compost pile, and static compost pile...
May 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28444603/physiological-functioning-of-lagerstroemia-speciosa-l-under-heavy-roadside-traffic-an-approach-to-screen-potential-species-for-abatement-of-urban-air-pollution
#11
H Singh, Savita, R Sharma, S Sinha, M Kumar, P Kumar, A Verma, S K Sharma
The mitigation potential of avenue tree species needs a sound understanding, especially for landscape planning or planting tree species on roadside, especially in city limits where there is huge traffic due to more number of vehicles. A preliminary study was conducted to investigate the impact of heavy traffic movement and pollution thereof on physiological functioning of Lagerstroemia speciosa trees planted on roadside in terms of carbon absorption, mitigation potential and adaptive behavior. Trees on roadside exhibited reduced carbon assimilation (36...
May 2017: 3 Biotech
https://www.readbyqxmd.com/read/28444548/post-effect-of-air-quality-improvement-on-biomarkers-for-systemic-inflammation-and-microparticles-in-asthma-patients-after-the-2008-beijing-olympic-games-a-pilot-study
#12
Jinming Gao, Xiaohua Xu, Zhekang Ying, Lei Jiang, Mianhua Zhong, Aixia Wang, Lung-Chi Chen, Bo Lu, Qinghua Sun
This study's aim was to investigate the post-effect of an air quality improvement on systemic inflammation and circulating microparticles in asthmatic patients during, and 2 months after, the Beijing Olympics 2008. We measured the levels of circulating inflammatory cytokines and microparticles in the peripheral blood from asthma patients and healthy controls during (phase 1), and 2 months after (phase 2) the Beijing 2008 Olympic Games. The concentrations of circulating cytokines (including TNFα, IL-6, IL-8, and IL-10) were still seen reduced in phase 2 when compared with those in phase 1...
April 25, 2017: Inflammation
https://www.readbyqxmd.com/read/28444520/elevational-plant-species-richness-patterns-and-their-drivers-across-non-endemics-endemics-and-growth-forms-in-the-eastern-himalaya
#13
Kumar Manish, Maharaj K Pandit, Yasmeen Telwala, Dinesh C Nautiyal, Lian Pin Koh, Sudha Tiwari
Despite decades of research, ecologists continue to debate how spatial patterns of species richness arise across elevational gradients on the Earth. The equivocal results of these studies could emanate from variations in study design, sampling effort and data analysis. In this study, we demonstrate that the richness patterns of 2,781 (2,197 non-endemic and 584 endemic) angiosperm species along an elevational gradient of 300-5,300 m in the Eastern Himalaya are hump-shaped, spatial scale of extent (the proportion of elevational gradient studied) dependent and growth form specific...
April 25, 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/28444505/occupational-heat-stress-assessment-and-protective-strategies-in-the-context-of-climate-change
#14
Chuansi Gao, Kalev Kuklane, Per-Olof Östergren, Tord Kjellstrom
Global warming will unquestionably increase the impact of heat on individuals who work in already hot workplaces in hot climate areas. The increasing prevalence of this environmental health risk requires the improvement of assessment methods linked to meteorological data. Such new methods will help to reveal the size of the problem and design appropriate interventions at individual, workplace and societal level. The evaluation of occupational heat stress requires measurement of four thermal climate factors (air temperature, humidity, air velocity and heat radiation); available weather station data may serve this purpose...
April 25, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28444366/intraoperative-air-leak-measured-after-lobectomy-is-associated-with-postoperative-duration-of-air-leak
#15
Alessandro Brunelli, Michele Salati, Cecilia Pompili, Paolo Gentili, Armando Sabbatini
OBJECTIVES: To verify the association between the air leak objectively measured intraoperatively (IAL) using the ventilator and the air leak duration after pulmonary lobectomy. METHODS: Prospective analysis on 111 patients submitted to pulmonary lobectomy (33 by video-assisted thoracic surgery). After resection, objective assessment of air leak (in milliliter per minute) was performed before closure of the chest by measuring the difference between a fixed inspired and expired volume, using a tidal volume of 8 ml/kg, a respiratory rate of 10 and a positive-end expiratory pressure of 5 cmH 2 O...
April 24, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28444117/exposure-opportunity-the-advantages-of-including-men-in-analyses-of-female-related-risk-factors
#16
Kirsten Rozemeijer, Saskia le Cessie, Astrid van Hylckama Vlieg, Frits R Rosendaal, Jan P Vandenbroucke, Charles Poole, Suzanne C Cannegieter
Intuitively, researchers do not include subjects who do not have the opportunity to be exposed, such as men in studies on oral contraceptives (OCs). We aimed to explore in which situations it is nevertheless beneficial to do so. We considered the effect of including men in case-control analyses of 8 different hypothetical data sets on the effect of OC use and venous thrombosis. In all scenarios, OC use was the exposure of interest, sex the factor that determined exposure opportunity, and air travel another risk factor...
April 21, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28444106/the-association-of-air-pollution-with-pubertal-development-evidence-from-hong-kong-s-children-of-1997-birth-cohort
#17
Jian V Huang, Gabriel M Leung, C Mary Schooling
Many pollutants are endocrine disruptors with impacts on reproduction and health in animals, but evidence in humans, of which sex-specific effects on pubertal development may be an indicator, is less clear. We examined the association of air pollution in utero and during early life with pubertal development in Hong Kong, China, an area with a high level of air pollution compared with other similarly developed cities. We assessed sex-specific associations of particulate matter less than or equal to 10 μm in diameter (PM10), nitric oxide, sulfur dioxide, and nitrogen dioxide in different growth phases with clinically assessed pubertal stage at approximately age 11 years (as indicated by Tanner stage) in a large population-representative birth cohort, the "Children of 1997...
April 21, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28444070/brazilian-version-of-the-functional-status-score-for-the-icu-translation-and-cross-cultural-adaptation
#18
Vinicius Zacarias Maldaner da Silva, Jose Aires de Araújo, Gerson Cipriano, Mariela Pinedo, Dale M Needham, Jennifer M Zanni, Fernando Silva Guimarães
Objective: The aim of the present study was to translate and cross-culturally adapt the Functional Status Score for the intensive care unit (FSS-ICU) into Brazilian Portuguese. Methods: This study consisted of the following steps: translation (performed by two independent translators), synthesis of the initial translation, back-translation (by two independent translators who were unaware of the original FSS-ICU), and testing to evaluate the target audience's understanding...
January 2017: Revista Brasileira de Terapia Intensiva
https://www.readbyqxmd.com/read/28443910/spin-state-variability-in-fe-2-complexes-of-substituted-2-pyridin-2-yl-1-10-phenanthroline-ligands-as-versatile-terpyridine-analogues
#19
Holm Petzold, Paul Djomgoue, Gerald Hörner, Silvio Heider, Charles Lochenie, Birgit Weber, Tobias Rüffer, Dieter Schaarschmidt
Fe(2+) spin crossover complexes [Fe(L)2](2+) (L = 2-(6-R(1)-pyridin-2-yl)-1,10-phenanthroline with R(1) = H, methoxy, bromo, -(1H-pyrazol-1-yl) or L = 2-(3-methoxy-pyridin-2-yl)-1,10-phenanthroline) were prepared. These air stable and durable complexes show SCO behaviour with very different transition temperatures T1/2 ranging from 130 K to 600 K depending on the substitution pattern. The use of (1)H NMR spectroscopy to elucidate the thermodynamics and kinetics of SCO in a solution of this series is described in detail...
April 26, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28443889/the-passivating-effect-of-cadmium-in-pbs-cds-colloidal-quantum-dots-probed-by-nm-scale-depth-profiling
#20
Pip C J Clark, Hanna Radtke, Atip Pengpad, Andrew I Williamson, Ben F Spencer, Samantha J O Hardman, Marina A Leontiadou, Darren C J Neo, Simon M Fairclough, Andrew A R Watt, Igor Pis, Silvia Nappini, Federica Bondino, Elena Magnano, Karsten Handrup, Karina Schulte, Mathieu G Silly, Fausto Sirotti, Wendy R Flavell
Achieving control of the surface chemistry of colloidal quantum dots (CQDs) is essential to fully exploit their properties in solar cells, but direct measurement of the chemistry and electronic structure in the outermost atomic layers is challenging. Here we probe the surface oxidation and passivation of cation-exchanged PbS/CdS core/shell CQDs with sub nm-scale precision using synchrotron-radiation-excited depth-profiling photoemission. We investigate the surface composition of the topmost 1-2.5 nm of the CQDs as a function of depth, for CQDs of varying CdS shell thickness, and examine how the surface changes after prolonged air exposure...
April 26, 2017: Nanoscale
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