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https://www.readbyqxmd.com/read/28644023/kinetics-of-interlayer-expansion-of-a-layered-silicate-driven-by-caffeine-intercalation-in-the-water-phase-using-transmission-x-ray-diffraction
#1
Tomohiko Okada, Takumi Yoshida, Taku Iiyama
The kinetics of caffeine uptake into the interlayer nanospace of silicate nanosheets modified with benzylammonium was evaluated by in situ monitoring the basal spacing in aqueous media using transmission X-ray diffraction. An interlayer spacing of 0.58 nm in water before caffeine uptake indicates a monomolecular layer of benzylammonium and a few water layers in each interlayer. The interlayer space expanded by 0.10 nm upon caffeine uptake (intercalation) and saturated even in the presence of excess caffeine...
June 23, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28643583/hemodynamic-stability-during-laryngeal-electromyography-procedures
#2
Yi-An Lu, Yu-Cheng Pei, Alice Mk Wong, Hui-Chen Chiang, Tuan-Jen Fang
BACKGROUND: Laryngeal electromyography (LEMG) is accepted as safe, with minimal side effects. However, patient hemodynamic stability, during these procedures, has not been reported. This study aimed to investigate the hemodynamics in patients undergoing LEMG and determine the risk factors for hemodynamic changes. METHODS: We recruited 89 consecutive patients who underwent LEMG. Baseline and postprocedural changes in vital signs were analyzed. RESULTS: Diastolic blood pressure (DBP) increased from 75...
June 23, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28641682/health-effects-of-airline-cabin-environments-in-simulated-8-hour-flights
#3
(no author information available yet)
INTRODUCTION: Commercial air travel is usually without health incidents. However, there is a view that cabin environments may be detrimental to health, especially flights of 8 h or more. Concerns have been raised about deep vein thrombosis, upper respiratory tract infections, altitude sickness, and toxins from the engines. METHODS: Passenger cabin simulators were used to achieve a comparative observational study with 8-h flights at pressures equivalent to terrestrial altitudes of ground, 4000, 6000, and 8000 ft...
July 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28641598/progress-towards-elimination-of-trans-fatty-acids-in-foods-commonly-consumed-in-four-latin-american-cities
#4
Rafael Monge-Rojas, Uriyoán Colón-Ramos, Enrique Jacoby, Thelma Alfaro, Maria das Graças Tavares do Carmo, Salvador Villalpando, Claudio Bernal
OBJECTIVE: To assess progress towards the elimination of trans-fatty acids (TFA) in foods after the 2008 Pan American Health Organization (PAHO) recommendation of virtual elimination of TFA in Latin America. DESIGN: A descriptive, comparative analysis of foods that were likely to contain TFA and were commonly consumed in four cities in Latin America. SETTING: San José (Costa Rica), Mexico City (Mexico), Rio de Janeiro (Brazil), Buenos Aires (Argentina)...
June 23, 2017: Public Health Nutrition
https://www.readbyqxmd.com/read/28640610/the-role-of-denitrification-in-stormwater-detention-basin-treatment-of-nitrogen
#5
Natalie R Morse, Lauren Elyse McPhillips, James P Shapleigh, Michael Todd Walter
The nitrogen (N) cycling dynamics of four stormwater basins, two often saturated sites ("Wet Basins") and two quick draining sites ("Dry Basins"), were monitored over a ~1-year period. This study paired stormwater and greenhouse gas monitoring with microbial analyses to elucidate the mechanisms controlling N treatment. Annual dissolved inorganic N (DIN) mass reductions (inflow minus outflow) were greater in the Dry Basin than in the Wet Basin, 2.16 vs. 0.75 g N m-2 yr-1, respectively. The Dry Basin infiltrated a much larger volume of water and thus had greater DIN mass reductions, even though incoming and outgoing DIN concentrations were statistically the same for both sites...
June 22, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28627339/-evaluation-of-adsorption-effect-of-activated-charcoal-on-oral-paraquat-poisoning-an-experimental-study-on-large-animal
#6
Baisheng Sun, Yuezhong He, Yuhao Pei, Cong Zhang, Xigang Zhang, Zhan Yang
OBJECTIVE: To study the adsorption effect of activated charcoal suspension on paraquat (PQ) in gastrointestinal tract of beagles exposed to PQ. METHODS: Twenty healthy male beagles were randomly divided into experimental group and control group, with 6 beagles in each group. 20% PQ solution (a dose of 30 mg/kg) was prescribed through stomach for beagles in both groups. After exposure to PQ for 30 minutes, the beagles in experimental group were given activated charcoal suspension (1...
March 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28626141/dietary-starfish-oil-prevents-hepatic-steatosis-and-hyperlipidemia-in-c57bl-6n-mice-fed-high-fat-diet
#7
Fumiaki Beppu, Haoqi Li, Kazuaki Yoshinaga, Toshiharu Nagai, Akihiko Yoshinda, Atsushi Kubo, Jota Kanda, Naohiro Gotoh
Starfish oil (SO) is characterized by functional lipids, including n-3 polyunsaturated fatty acid (both in the form of triacylglycerol and in the form of phospholipid), and carotenoids, which may exert beneficial effects on metabolic disorders in obesity-associated diseases. In the present study, the effect of SO on dysregulation of lipid metabolism was examined using C57BL/6N mice treated with high-fat (HF) diet. Mice were fed HF, HF with 2% SO, or HF with 5% SO diet for 8 weeks. Weight gain, blood glucose, serum and hepatic lipid contents, and hepatic fatty acid composition were measured...
June 13, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28625781/adf-cofilin-accelerates-actin-dynamics-by-severing-filaments-and-promoting-their-depolymerization-at-both-ends
#8
Hugo Wioland, Berengere Guichard, Yosuke Senju, Sarah Myram, Pekka Lappalainen, Antoine Jégou, Guillaume Romet-Lemonne
Actin-depolymerizing factor (ADF)/cofilins contribute to cytoskeletal dynamics by promoting rapid actin filament disassembly. In the classical view, ADF/cofilin sever filaments, and capping proteins block filament barbed ends whereas pointed ends depolymerize, at a rate that is still debated. Here, by monitoring the activity of the three mammalian ADF/cofilin isoforms on individual skeletal muscle and cytoplasmic actin filaments, we directly quantify the reactions underpinning filament severing and depolymerization from both ends...
June 14, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28625753/detection-of-acute-arterial-occlusion-during-artery-bypass-surgery-for-a-lower-extremity-by-monitoring-regional-saturation-of-oxygen-of-the-sole-of-the-foot
#9
Hiromichi Kurosaki, Misako Higuchi, Rika Nogawa, Tomoyuki Kawamata
No abstract text is available yet for this article.
March 2, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28625661/resting-limb-muscle-perfusion-during-inspiratory-muscle-loading-in-hypoxia-and-normoxia
#10
Hannes Klenze, Thomas Christian Köhler, Franziska Farquharson, Stephan Walterspacher, Daniel Duerschmied, Kai Roecker, Hans-Joachim Kabitz, David Johannes Walker
INTRODUCTION: Fatiguing of respiratory muscles reduces peripheral muscle perfusion. Further, acute hypoxia enhances respiratory muscle fatigue. This study investigated the effects of inspiratory muscle loading (IML) on resting locomotor muscle perfusion in hypoxia compared to normoxia. METHODS: Ten subjects completed two study days of fatiguing IML (blinded, randomized) in normobaric hypoxia (targeted oxygen saturation 80%) and normoxia, respectively. Contrast-enhanced ultrasound (CEUS) of the gastrocnemius muscle and popliteal doppler ultrasonography were used to monitor muscle perfusion...
June 15, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28624520/dissecting-the-chloroplast-proteome-of-chickpea-cicer-arietinum-l-provides-new-insights-into-classical-and-non-classical-functions
#11
Nilesh Vikram Lande, Pratigya Subba, Pragya Barua, Dipak Gayen, T S Keshava Prasad, Subhra Chakraborty, Niranjan Chakraborty
Chloroplast, the energy organelle unique to plant cells, is a dynamic entity which integrates an array of metabolic pathways and serves as first level for energy conversion for the entire ecological hierarchy. Increasing amount of sequence data and evolution of mass spectrometric approaches has opened up new avenues for opportune exploration of the global proteome of this organelle. In our study, we aimed at generation of a comprehensive catalogue of chloroplast proteins in a grain legume, chickpea and provided a reference proteome map...
June 14, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28622666/real-time-automatic-apneic-event-detection-using-nocturnal-pulse-oximetry
#12
Da Woon Jung, Su Hwan Hwang, Jaegeol Cho, Byung Hun Choi, Hyun Jae Baek, Yu Jin Lee, Do Un Jeong, Kwang Suk Park
OBJECTIVE: Nocturnal pulse oximetry has been proposed as a simpler alternative to polysomnography in diagnosing sleep apnea. However, existing techniques are limited in terms of inability to provide time information on sleep apnea occurrence. This study aimed to propose a new strategy for near real-time automatic detection of apneic events and reliable estimation of apnea-hypopnea index using nocturnal pulse oximetry. METHODS: Among 230 polysomnographic recordings with apnea-hypopnea index values ranging from 0 to 86...
June 14, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28619185/high-prevalence-of-restless-legs-syndrome-willis-ekbom-disease-rls-wed-among-people-living-at-high-altitude-in-the-indian-himalaya
#13
Ravi Gupta, Jan Ulfberg, Richard P Allen, Deepak Goel
BACKGROUND: At high altitude, prevalence of restless legs syndrome has been found to be greater than expected in small population-based studies, which did not use validated tools for identification of RLS. However, it is not known as to whether this increased prevalence is associated with altitude or increased risk factors for RLS in these populations or errors in identification of RLS. METHOD: This population based, door-to-door study was conducted at low altitude (400 m above sea level) and high altitudes (1900-2000 m and 3200 m above sea level) using random stratified sampling in Himalayan and sub-Himalayan region of India...
July 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28619108/scavenging-on-a-pulsed-resource-quality-matters-for-corvids-but-density-for-mammals
#14
Gjermund Gomo, Jenny Mattisson, Bjørn Roar Hagen, Pål Fossland Moa, Tomas Willebrand
BACKGROUND: Human food subsidies can provide predictable food sources in large quantities for wildlife species worldwide. In the boreal forest of Fennoscandia, gut piles from moose (Alces alces) harvest provide a potentially important food source for a range of opportunistically scavenging predators. Increased populations of predators can negatively affect threatened or important game species. As a response to this, restrictions on field dressing of moose are under consideration in parts of Norway...
June 15, 2017: BMC Ecology
https://www.readbyqxmd.com/read/28616284/intrapleural-perfusion-thermo-chemotherapy-for-pleural-effusion-caused-by-lung-carcinoma-under-vats
#15
Runlei Hu, Hong Jiang, Hu Li, Dongshan Wei, Guoqing Wang, Shenglin Ma
BACKGROUND: The aim of this study was to assess the effectiveness of intrapleural perfusion thermo-chemotherapy (IPTC) under video-assisted thoracoscopic surgery (VATS) for malignant pleural effusion (MPE) caused by lung carcinoma. METHODS: In this retrospective study, fifty-four patients with moderate or large amounts of ipsilateral MPE secondary to non-small cell lung cancer (NSCLC) underwent pleural biopsy and IPTC under VATS. IPTC was performed by perfusing the pleural cavity with 43...
May 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28613296/battery-operated-preconcentration-assisted-lateral-flow-assay
#16
Cheonjung Kim, Yong Kyoung Yoo, Sung Il Han, Junwoo Lee, Dohwan Lee, Kyungjae Lee, Kyo Seon Hwang, Kyu Hyoung Lee, Seok Chung, Jeong Hoon Lee
Paper-based analytical devices (e.g. lateral flow assays) are highly advantageous as portable diagnostic systems owing to their low costs and ease of use. Because of their low sensitivity and detection limits for biomolecules, these devices have several limitations in applications for real-field diagnosis. Here, we demonstrate a paper-based preconcentration enhanced lateral flow assay using a commercial β-hCG-based test. Utilizing a simple 9 V battery operation with a low power consumption of approximately 81 μW, we acquire a 25-fold preconcentration factor, demonstrating a clear sensitivity enhancement in the colorimetric lateral flow assay; consequently, clear colors are observed in a rapid kit test line, which cannot be monitored without preconcentration...
June 14, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28612939/using-soundscapes-to-detect-variable-degrees-of-human-influence-on-tropical-forests-in-papua-new-guinea
#17
Zuzana Burivalova, Michael Towsey, Tim Boucher, Anthony Truskinger, Cosmas Apelis, Paul Roe, Edward T Game
There is global concern about tropical forest degradation, in part, because of the associated loss of biodiversity. Communities and indigenous people play a fundamental role in tropical forest management and they are often efficient at preventing forest degradation. However, monitoring changes in biodiversity due to degradation, especially at a scale appropriate to local tropical forest management, is marred with difficulties including the need for expert training, inconsistency across observers, and the lack of baseline or reference data...
June 14, 2017: Conservation Biology: the Journal of the Society for Conservation Biology
https://www.readbyqxmd.com/read/28612144/fast-calcium-transients-translate-the-distribution-and-conduction-of-neural-activity-in-different-regions-of-a-single-sensory-neuron
#18
Nuhan Purali
In the present study, cytosolic calcium concentration changes were recorded in response to various forms of excitations, using the fluorescent calcium indicator dye OG-BAPTA1 together with the current or voltage clamp methods in stretch receptor neurons of crayfish. A single action potential evoked a rise in the resting calcium level in the axon and axonal hillock, whereas an impulse train or a large saturating current injection would be required to evoke an equivalent response in the dendrite region. Under voltage clamp conditions, amplitude differences between axon and dendrite responses vanished completely...
September 2017: Invertebrate Neuroscience: IN
https://www.readbyqxmd.com/read/28607646/challenges-experienced-by-nurses-in-the-implementation-of-a-healthcare-reform-plan-in-iran
#19
Shahin Salarvand, Maryam Azizimalekabadi, Azadeh Akbari Jebeli, Mohamadreza Nazer
INTRODUCTION: The Healthcare Reform Plan is counted as a plan for improving healthcare services in Iran. Undoubtedly pros and cons can be seen either in plan or implementation. This study was conducted to describe nurses' challenges in implementing healthcare reform in Iran. METHODS: A qualitative method centered upon conventional content analysis was applied. We used purposive sampling and data saturation was obtained by 30 participants. Data were analyzed using MAXQDA software...
April 2017: Electronic Physician
https://www.readbyqxmd.com/read/28607132/impaired-muscle-oxygenation-and-elevated-exercise-blood-pressure-in-hypertensive-patients-links-with-vascular-stiffness
#20
Konstantina Dipla, Areti Triantafyllou, Nikolaos Koletsos, Stavros Papadopoulos, Vasileios Sachpekidis, Ioannis S Vrabas, Eugenia Gkaliagkousi, Andreas Zafeiridis, Stella Douma
This study examined in vivo (1) skeletal muscle oxygenation and microvascular function, at rest and during handgrip exercise, and (2) their association with macrovascular function and exercise blood pressure (BP), in newly diagnosed, never-treated patients with hypertension and normotensive individuals. Ninety-one individuals (51 hypertensives and 40 normotensives) underwent office and 24-hour ambulatory BP, arterial stiffness, and central aortic BP assessment, followed by a 5-minute arterial occlusion and a 3-minute submaximal handgrip exercise...
June 12, 2017: Hypertension
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