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https://www.readbyqxmd.com/read/28454036/a-clean-environmental-week-let-the-nature-breathe
#1
Khaled Moustafa
High levels of CO2 emissions in the atmosphere and toxic pollutants in air, water and food have serious repercussions on all life's systems, including living beings, environment and economy. Everyone on the Earth is concerned by pollution in some way or another, no matter where and how the pollution is produced as airborne and foodborne pollutants could circulate around the world in different ways, through for example climate components (wind, rain) and/or import and export of foodstuffs. Similarly to living beings that take advantage of day-night circadian rhythms to recover after diurnal hardships, the environment in its entirety could also be seen as a complex living system that needs regular breaks to assimilate or ingest toxic pollutants produced during intensive and continuous industrial processes...
April 25, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28453264/polymorphous-al-mofs-based-on-v-shaped-linker-molecules-synthesis-properties-and-in-situ-investigation-of-their-crystallization
#2
Martin Krüger, A Ken Inge, Helge Reinsch, Yuan-Han Li, Mohammad Wahiduzzaman, Chia-Her Lin, Sue-Lein Wang, Guillaume Maurin, Norbert Stock
The in situ and systematic high-throughput investigation of the system Al(3+)/4,4'-benzophenonedicarboxylic acid (H2BPDC)/DMF/H2O in the presence of various additives was carried out, and a new Al-MOF of composition [Al(OH)(BPDC)], denoted as CAU-21-BPDC, was obtained. Its crystal structure was determined from single-crystal X-ray diffraction data (space group I422, a = b = 17.2528(7) Å, c = 23.864(1) Å). The structure is built up by octanuclear rings of cis corner-sharing AlO6 polyhedra forming the inorganic building unit (IBU)...
April 28, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28449498/trans-tracheostomy-repair-of-tracheo-esophageal-fistula-under-endoscopic-view-in-a-75-year-old-woman
#3
Francesco Paolo Caronia, Alfonso Reginelli, Mario Santini, Roberto Alfano, Sebastiano Trovato, Ettore Arrigo, Alfonso Fiorelli
Tracheo-esophageal fistula is a life-threatening condition for fatal pulmonary complications. Surgery is the treatment of choice. Unfortunately, the most of patients are unfit for surgery and in these cases there is no a standardized management. Herein, we reported a clinical case of a 75-year-old-woman with a tracheoesophageal fistula related to tracheostomy. The fistula was localized 3.5 cm below the vocal folds and extended 3 cm distally. The patient's poor clinical condition contraindicated surgery while the characteristics of fistula prevented any successfully endoscopic repair with standard methods as application of fibrin glue, clipping, or stenting...
March 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28446067/the-chemical-disruption-of-human-metabolism
#4
Stephen J Genuis, Edmond Kyrillos
BACKGROUND: Recent evidence highlights the reality of unprecedented human exposure to toxic chemical agents found throughout our environment - in our food and water supply, in the air we breathe, in the products we apply to our skin, in the medical and dental materials placed into our bodies, and even within the confines of the womb. With biomonitoring confirming the widespread bioaccumulation of myriad toxicants among population groups, expanding research continues to explore the pathobiological impact of these agents on human metabolism...
April 26, 2017: Toxicology Mechanisms and Methods
https://www.readbyqxmd.com/read/28443129/maximum-plant-uptakes-for-water-nutrients-and-oxygen-are-not-always-met-by-irrigation-rate-and-distribution-in-water-based-cultivation-systems
#5
Chris Blok, Brian E Jackson, Xianfeng Guo, Pieter H B de Visser, Leo F M Marcelis
Growing on rooting media other than soils in situ -i.e., substrate-based growing- allows for higher yields than soil-based growing as transport rates of water, nutrients, and oxygen in substrate surpass those in soil. Possibly water-based growing allows for even higher yields as transport rates of water and nutrients in water surpass those in substrate, even though the transport of oxygen may be more complex. Transport rates can only limit growth when they are below a rate corresponding to maximum plant uptake...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28441869/highly-transparent-conductive-and-bendable-ag-nanowire-electrode-with-enhanced-mechanical-stability-based-on-polyelectrolyte-adhesive-layer
#6
Tieqiang Wang, Chengsheng Luo, Fuchun Liu, Linlin Li, Xuemin Zhang, Yunong Li, En-Hou Han, Yu Fu, Yonghua Jiao
In this paper, a highly transparent, conductive and bendable Ag nanowire based electrode with excellent mechanical and air-stability was prepared through introducing adhesive polyelectrolyte multilayer between the Ag nanowire networks and polyethylene terephthalate (PET) substrate. The introduction of the adhesive layer was performed based a peel-assembly-transfer procedure, and the adhesive polyelectrolyte greatly improved the mechanical of the Ag nanowire transparent conductive films (TCFs) without obviously attenuating the morphology and optoelectrical properties of the Ag nanowire networks...
April 26, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28441823/-evaluation-of-a-low-dose-imaging-protocol-on-radiation-exposure-reduction-in-pediatric-supraventricular-tachycardia-ablation-procedure
#7
F Wang, Y Lu, C Yuan, J R Bai, H S Yang, L Wu
Objective: To evaluate the feasibility and efficiency of a low dose imaging protocol on reducing X-ray dose level in pediatric supraventricular tachycardia (SVT) ablation procedure. Method: Data were collected from 103 patients who underwent catheter ablation for SVT in Children's Hospital of Fudan University from January 2014 to October 2016 in terms of body weight, body surface area (BSA), SVT types, accessory pathway location, fluoroscopy time and the radiation dose (including AIR KERMA and dose area product) in a case observational study...
April 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28439376/-back-to-bedside-residents-and-fellows-perspectives-on-finding-meaning-in-work
#8
Dustin M Hipp, Kristy L Rialon, Kathryn Nevel, Anai N Kothari, Lcdr Dinchen A Jardine
BACKGROUND: Physician burnout is common and associated with significant consequences for physicians and patients. One mechanism to combat burnout is to enhance meaning in work. OBJECTIVE: To provide a trainee perspective on how meaning in work can be enhanced in the clinical learning environment through individual, program, and institutional efforts. METHODS: "Back to Bedside" resulted from an appreciative inquiry exercise by 37 resident and fellow members of the ACGME's Council of Review Committee Residents (CRCR), which was guided by the memoir When Breath Becomes Air by Paul Kalanithi...
April 2017: Journal of Graduate Medical Education
https://www.readbyqxmd.com/read/28425026/photosynthetic-responses-to-temperature-across-leaf-canopy-ecosystem-scales-a-15-year-study-in-a-californian-oak-grass-savanna
#9
Siyan Ma, Jessica L Osuna, Joseph Verfaillie, Dennis D Baldocchi
Ecosystem CO2 fluxes measured with eddy-covariance techniques provide a new opportunity to retest functional responses of photosynthesis to abiotic factors at the ecosystem level, but examining the effects of one factor (e.g., temperature) on photosynthesis remains a challenge as other factors may confound under circumstances of natural experiments. In this study, we developed a data mining framework to analyze a set of ecosystem CO2 fluxes measured from three eddy-covariance towers, plus a suite of abiotic variables (e...
April 19, 2017: Photosynthesis Research
https://www.readbyqxmd.com/read/28422911/do-vented-chest-seals-differ-in-efficacy-an-experimental-evaluation-using-a-swine-hemopneumothorax-model
#10
Bijan S Kheirabadi, Irasema B Terrazas, Nahir Miranda, Spc Amber N Voelker, Francoise Arnaud, Harold G Klemcke, Frank F Butler, Michael A Dubick
OBJECTIVE: Hemopneumothorax (HPTX) is the second leading cause of potentially preventable death among combat casualties. We investigated the ability of five FDA-approved non-occlusive chest seals (CSs) to seal a bleeding chest wound and prevent tension HPTX in a swine model. METHODS: Following instrumentation, an open chest wound was created in the left thorax of spontaneously air-breathing anesthetized pigs (n=26, 43 Kg). Autologous fresh blood (226 mL) was then infused into the pleural cavity to produce HPTX...
April 18, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28422501/interfacial-activity-of-nonamphiphilic-particles-in-fluid-fluid-interfaces
#11
Yi Zhang, Songcheng Wang, Jiarun Zhou, Ruiyang Zhao, Gregory Benz, Stephane Tcheimou, J Carson Meredith, Sven H Behrens
Surfactants can adsorb in fluid-fluid interfaces and lower the interfacial tension. Like surfactants, particles with appropriate wettability can also adsorb in fluid-fluid interfaces. Despite many studies of particle adsorption at fluid interfaces, some confusion persists regarding the ability of (simple, nonamphiphilic) particles to reduce the interfacial tension. In the present work, the interfacial activity of silica nanoparticles at air-water and hexadecane-water interfaces and of ethyl cellulose particles at the interface of water with trimethylolpropane trimethacrylate was analyzed through pendant drop tensiometry...
April 25, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28421269/thermal-balance-of-nellore-cattle
#12
Cíntia Carol de Melo Costa, Alex Sandro Campos Maia, Sheila Tavares Nascimento, Carolina Cardoso Nagib Nascimento, Marcos Chiquitelli Neto, Vinícius de França Carvalho Fonsêca
This work aimed at characterizing the thermal balance of Nellore cattle from the system of indirect calorimetry using a facial mask. The study was conducted at the Animal Biometeorology Laboratory of the São Paulo State University, Jaboticabal, Brazil. Five male Nellore weighing 750 ± 62 kg, at similar ages and body conditions were distributed in four 5 × 5 Latin squares (5 days of records and five schedules) during 20 days. Physiological and environmental measurements were obtained from the indirect calorimetry system using a facial mask...
April 18, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28416582/relationship-between-oxygen-concentration-and-temperature-in-an-exothermic-warming-device
#13
Ben Brooks, Charles D Deakin
INTRODUCTION: Actively warming hypothermic patients or preventing hypothermia is critical in optimising outcomes in patients with traumatic injuries. Our aim was to investigate the effect of ambient oxygen concentration on the rate and change in temperature of the TechTrade Ready-Heat II exothermic (oxygen-activated) warming blanket, to evaluate safety and ascertain the risk of thermal injury. METHODS: A mannequin covered with an exothermic blanket was placed in a sealed oxygen tent...
April 17, 2017: Emergency Medicine Journal: EMJ
https://www.readbyqxmd.com/read/28416013/no-seasonal-variation-in-physical-activity-of-han-chinese-living-in-beijing
#14
Guanlin Wang, Baoguo Li, Xueying Zhang, Chaoqun Niu, Jianbo Li, Li Li, John R Speakman
BACKGROUND: Physical activity (PA) is widely acknowledged to be beneficial to health and wellbeing, and is potentially influenced by a variety of environmental factors such as ambient temperature, weather conditions and air pollution levels. Since these factors vary seasonally, physical activity participation may also respond seasonally. Current population studies to profile physical activity often sample individuals only once, and this may result in biased estimates if there is strong seasonal variation...
April 17, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/28412572/quantitative-analysis-of-patients-with-celiac-disease-by-video-capsule-endoscopy-a-deep-learning-method
#15
Teng Zhou, Guoqiang Han, Bing Nan Li, Zhizhe Lin, Edward J Ciaccio, Peter H Green, Jing Qin
BACKGROUND: Celiac disease is one of the most common diseases in the world. Capsule endoscopy is an alternative way to visualize the entire small intestine without invasiveness to the patient. It is useful to characterize celiac disease, but hours are need to manually analyze the retrospective data of a single patient. Computer-aided quantitative analysis by a deep learning method helps in alleviating the workload during analysis of the retrospective videos. METHOD: Capsule endoscopy clips from 6 celiac disease patients and 5 controls were preprocessed for training...
April 8, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28412056/biomolecules-from-olive-pruning-waste-in-sierra-m%C3%A3-gina-engaging-the-energy-transition-by-multi-actor-and-multidisciplinary-analyses
#16
Marianne Cohen, Gilles Lepesant, Farida Lamari, Clelia Bilodeau, Petra Benyei, Stéphane Angles, Julien Bouillon, Kevin Bourrand, Ramla Landoulsi, Delphine Jaboeuf, Maria Alonso-Roldán, Isidro Espadas-Tormo, Veronica Belandria, Philippe Silar, Moussa Dicko
The price volatility of fossil resources, the uncertainty of their long-term availability and the environmental, climatic and societal problems posed by their operation lead to the need of an energy transition enabling the development and utilization of other alternative and sustainable resources. Acknowledging that indirect land-use change can increase greenhouse gas emission, the European Union (EU) has reshaped its biofuel policy. It has set criteria for sustainability to ensure that the use of biofuels guarantees real carbon savings and protects biodiversity...
April 12, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28402733/effect-of-surface-treatment-silane-and-universal-adhesive-on-microshear-bond-strength-of-nanofilled-composite-repairs
#17
I A Fornazari, I Wille, E M Meda, R T Brum, E M Souza
PURPOSE: The aim of this study was to evaluate the effect of surface treatment and universal adhesive on the microshear bond strength of nanoparticle composite repairs. METHODS: One hundred and forty-four specimens were built with a nanofilled composite (Filtek Supreme Ultra, 3M ESPE). The surfaces of all the specimens were polished with SiC paper and stored in distilled water at 37°C for 14 days. Half of the specimens were then air abraded with Al2O3 particles and cleaned with phosphoric acid...
April 12, 2017: Operative Dentistry
https://www.readbyqxmd.com/read/28402285/doping-of-graphene-induced-by-boron-silicon-substrate
#18
Arezoo Dianat, Zhongquan Liao, Martin Gall, Tao Zhang, Rafael Gutierrez, Ehrenfried Zschech, Gianaurelio Cuniberti
In this work, we show the doping of graphene most likely from heteroatoms induced by the substrate using Raman spectrum, X-ray photoelectron spectroscopy (XPS), energy dispersive X-ray spectroscopy (EDX) and ab initio molecular dynamics simulations. The doping of graphene on a highly boron-doped silicon substrate was achieved by an annealing at 400 K for about 3 hours in an oven with air flow. With the same annealing, only the Raman features similar to that from the pristine graphene were observed in the freestanding graphene and the graphene on a typical Si/SiO2 wafer...
April 12, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28386701/representativeness-of-scholander-chamber-measurements-as-a-function-of-time-after-leaf-removal
#19
Genei Antonio Dalmago, Gilberto Rocca da Cunha, Anderson Santi, Elizandro Fochesatto, Samuel Kovaleski
The objectives of the study were to determine the maximum tolerable period between leaf removal from a plant and the determination of leaf water potential (Ψ l ), and to evaluate different ways of packing leaves after their removal from a plant (LR). Two experiments (Exp) were conducted in a randomized complete block design with four replicates, using bean, maize, and soybean crops. The predawn leaf water potential (Ψ PD ) (Exp1) and the minimum leaf water potential (Ψ min ) (Exp1 and Exp2) were determined...
April 6, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28386065/design-and-demonstration-of-an-underwater-acoustic-carpet-cloak
#20
Yafeng Bi, Han Jia, Wenjia Lu, Peifeng Ji, Jun Yang
The carpet cloak, which is designed to hide the objects placed on a reflecting surface, has become a topic of considerable interest. Inspired by those theoretical works, the experimental realization of acoustic carpet cloak in air host has been reported. However, due to the difficulty in obtaining the unit cell in reality, the underwater carpet cloak still remains in simulation thus far. Here, we design and fabricate a realizable underwater acoustic carpet cloak. By introducing a scaling factor, the structure of the carpet cloak, which is comprised of layered brass plates, is greatly simplified at the cost of some impedance match...
April 6, 2017: Scientific Reports
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