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https://www.readbyqxmd.com/read/29346707/tuning-high-temperature-wetting-behavior-of-metal-toward-ultrafine-nanoparticles
#1
Yubing Zhou, Bharath Natarajan, Yanchen Fan, Hua Xie, Chunpeng Yang, Shaomao Xu, Yonggang Yao, Feng Jiang, Qianfan Zhang, Jeffrey W Gilman, Liangbing Hu
The interaction between the metal nanoparticles and their substrate plays a critical role in determining the particle morphology, distribution, and properties. Here we present the pronounced impact of a thin oxide coating to the dispersion of metal nanoparticles on a carbon matrix. We employ Al2O3-supported Pt nanoparticles in comparison with direct synthesis of Pt nanoparticles on bare carbon surfaces. Pt nanoparticles with an average size of ≈2 nm and a size distribution ranging between 0.5 nm and 4.0 nm are synthesized on the Al2O3 coated carbon nanofiber, significantly improved compared to those directly synthesized on bare carbon surface...
January 18, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29346581/melatonin-attenuates-lung-ischaemia-reperfusion-injury-via-inhibition-of-oxidative-stress-and-inflammation
#2
Ming-Liang Wang, Chun-Hua Wei, Wen-Dong Wang, Jia-Shun Wang, Jun Zhang, Jian-Jun Wang
OBJECTIVES: Lung ischaemia-reperfusion injury is a complex pathophysiological process due to the production of reactive oxygen species and the generation of inflammatory reaction. We investigated the protective effects and the corresponding mechanism of melatonin (MT), a potent free-radical scavenger, on lung injury induced by ischaemia-reperfusion in a mouse model. METHODS: Adult male C57BL/6J mice (n = 30) were randomly and equally allocated into 5 groups: sham controls, IR, IR + 10 mg/kg MT, IR + 20 mg/kg MT and IR + 30 mg/kg MT...
January 15, 2018: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29346530/bacterioplankton-composition-in-tropical-high-elevation-lakes-of-the-andean-plateau
#3
Pablo Aguilar, Cristina Dorador, Irma Vila, Ruben Sommaruga
High-elevation lakes in the tropics are subject to extreme environmental fluctuations and microbes may harbour a unique genomic repertoire, but their composition and diversity are largely unknown. Here we compared the planktonic bacterial community composition (BCC) and diversity of three tropical lakes located in the high Andean plateau (???4400 m above sea level) during the dry and wet season. Diversity in these lakes was higher in the cool and wet season than in the warm and dry one. OTUs composition was significantly different among lakes and between seasons...
January 16, 2018: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/29345710/small-degree-of-anisotropic-wetting-on-self-similar-hierarchical-wrinkled-surfaces
#4
Gaojian Lin, Qiuting Zhang, Cunjing Lv, Yichao Tang, Jie Yin
We studied the wetting behavior of multiscale self-similar hierarchical wrinkled surfaces. The hierarchical surface was fabricated on poly(dimethylsiloxane) (PDMS) substrates by manipulating the sequential strain release and combined plasma/ultraviolet ozone (UVO) treatment. The generated structured surface shows an independently controlled dual-scale roughness with level-1 small-wavelength wrinkles (wavelength of 700-1500 nm and amplitude of 50-500 nm) resting on level-2 large-wavelength wrinkles (wavelength of 15-35 μm and amplitude of 3...
January 18, 2018: Soft Matter
https://www.readbyqxmd.com/read/29345031/amazon-droughts-and-forest-responses-largely-reduced-forest-photosynthesis-but-slightly-increased-canopy-greenness-during-the-extreme-drought-of-2015-2016
#5
Jia Yang, Hanqin Tian, Shufen Pan, Guangsheng Chen, Bowen Zhang, Shree Dangal
Amazon droughts have major impacts on regional ecosystem functioning as well as global carbon cycling. The severe dry-season droughts in 2005 and 2010, driven by Atlantic sea surface temperature (SST) anomaly, have been widely investigated in terms of drought severity and impacts on ecosystems. Although the influence of Pacific SST anomaly on wet-season precipitation has been well recognized, it remains uncertain to what extent the droughts driven by Pacific SST anomaly could affect forest greenness and photosynthesis in the Amazon...
January 18, 2018: Global Change Biology
https://www.readbyqxmd.com/read/29344745/wet-milling-of-large-quantities-of-human-excision-adipose-tissue-for-the-isolation-of-stromal-vascular-fraction-cells
#6
Nadia Menzi, Rik Osinga, Atanas Todorov, Dirk Johannes Schaefer, Ivan Martin, Arnaud Scherberich
The isolation of stromal vascular fraction (SVF) cells from excised human adipose tissue, for clinical or research purposes, implies the tedious and time consuming process of manual mincing prior to enzymatic digestion. Since no efficient alternative technique to this current standard procedure has been proposed so far, the aim of this study was to test a milling procedure, using two simple, inexpensive and commercially available manual meat grinders, to process large amounts of adipose tissue. The procedure was assessed on adipose tissue resections from seven human donors and compared to manual mincing with scalpels...
January 17, 2018: Cytotechnology
https://www.readbyqxmd.com/read/29344631/a-brief-exposure-based-treatment-vs-cognitive-processing-therapy-for-posttraumatic-stress-disorder-a-randomized-noninferiority-clinical-trial
#7
Denise M Sloan, Brian P Marx, Daniel J Lee, Patricia A Resick
Importance: Written exposure therapy (WET), a 5-session intervention, has been shown to efficaciously treat posttraumatic stress disorder (PTSD). However, this treatment has not yet been directly compared with a first-line PTSD treatment such as cognitive processing therapy (CPT). Objective: To determine if WET is noninferior to CPT in patients with PTSD. Design, Setting, and Participants: In this randomized clinical trial conducted at a Veterans Affairs medical facility between February 28, 2013, and November 6, 2016, 126 veteran and nonveteran adults were randomized to either WET or CPT...
January 17, 2018: JAMA Psychiatry
https://www.readbyqxmd.com/read/29344364/novel-dry-cryotherapy-system-for-cooling-the-equine-digit
#8
Jessica Morgan, Darko Stefanovski, Margret Lenfest, Sraboni Chatterjee, James Orsini
Objectives: Digital cryotherapy is commonly used for laminitis prophylaxis and treatment. Currently validated methods for distal limb cryotherapy involve wet application or compression technology. There is a need for a practical, affordable, dry cryotherapy method that effectively cools the digit. The objective of this study was to evaluate the hoof wall surface temperatures (HWSTs) achieved with a novel dry cryotherapy technology. Design: Repeated-measures in vivo experimental study...
2018: Veterinary Record Open
https://www.readbyqxmd.com/read/29343303/comparison-of-modified-wet-suction-technique-and-dry-suction-technique-in-endoscopic-ultrasound-guided-fine-needle-aspiration-eus-fna-for-solid-lesions-study-protocol-for-a-randomized-controlled-trial
#9
Yun Wang, Qian Chen, Jinlin Wang, Xiaoli Wu, Yaqi Duan, Ping Yin, Qiaozhen Guo, Wei Hou, Bin Cheng
BACKGROUND: Several suction techniques have been developed recently to enhance tissue acquisition when sampling solid lesions using endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA). The aim of this study is to determine whether a new modified wet suction technique (MWST) compared with the conventional dry suction technique (DRST) shall present better outcomes with respect to diagnostic yield and specimen quality of solid lesions in the intra-abdomen and mediastinum. METHODS/DESIGN: This is a single-blind, randomized, controlled, superiority trial conducted at four large tertiary care centers in China...
January 17, 2018: Trials
https://www.readbyqxmd.com/read/29342836/cool-climate-red-wines-chemical-composition-and-comparison-of-two-protocols-for-%C3%A2-h-nmr-analysis
#10
Violetta Aru, Klavs Martin Sørensen, Bekzod Khakimov, Torben Bo Toldam-Andersen, Søren Balling Engelsen
This study investigates the metabolome of 26 experimental cool-climate wines made from 22 grape varieties using two different protocols for wine analysis by proton nuclear magnetic resonance (¹H-NMR) spectroscopy. The wine samples were analyzed as-is (wet) and as dried samples. The NMR datasets were preprocessed by alignment and mean centering. No normalization or scaling was performed. The "wet" method preserved the inherent properties of the samples and provided a fast and effective overview of the molecular composition of the wines...
January 13, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29341829/climatic-modulation-of-neurotransmitter-release-in-amphibian-neuromuscular-junctions-role-of-dynorphin-a
#11
Dengyun Ge, Nickolas Anastasios Lavidis
Amphibian neuromuscular junctions become relatively more silent during the dry-winter season in Australia. Endogenous opioid peptides play an important role in the regulation of the physiological functions of active and dormant vertebrates. Previous findings suggest that dynorphin-A is more potent than other opiates in decreasing evoked neurotransmission in amphibian neuromuscular junctions. Dynorphin-A has been shown not to alter the amplitude or the frequency of spontaneous quantal neurotransmitter release...
January 17, 2018: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/29341665/can-hail-and-rain-nucleate-cloud-droplets
#12
Prasanth Prabhakaran, Stephan Weiss, Alexei Krekhov, Alain Pumir, Eberhard Bodenschatz
We present results from moist convection in a mixture of pressurized sulfur hexafluoride (liquid and vapor), and helium (gas) to model the wet and dry components of the Earth's atmosphere. To allow for homogeneous nucleation, we operate the experiment close to critical conditions. We report on the nucleation of microdroplets in the wake of large cold liquid drops falling through the supersaturated atmosphere and show that the homogeneous nucleation is caused by isobaric cooling of the saturated sulfur hexafluoride vapor...
September 22, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/29340952/rfathm6a-a-new-tool-for-predicting-m6a-sites-in-arabidopsis-thaliana
#13
Xiaofeng Wang, Renxiang Yan
We curated a reliable dataset of m6A sites in Arabidopsis thaliana, built competitive models for predicting m6A sites, extracted predominant rules from the prediction models and analyzed the most important features. In biological RNA, approximately 150 chemical modifications have been discovered, of which N6-methyladenine (m6A) is the most prevalent and abundant. This modification plays an essential role in a myriad of biological mechanisms and regulates RNA localization, nuclear export, translation, stability, alternative splicing, and other processes...
January 16, 2018: Plant Molecular Biology
https://www.readbyqxmd.com/read/29340904/turkish-women-s-knowledge-attitudes-and-behaviors-on-wet-nursing-milk-sharing-and-human-milk-banking
#14
Ahmet Ergin, S Utku Uzun
Purpose The aim of this study was to determine Turkish women's knowledge, attitudes, and behaviors on wet-nursing, milk sharing, and human milk banking in a primary care setting located in a semi-rural area. Description Donated human milk is a feasible option for feeding infants and children. Currently, there is a debate on the topic starts with the preparations to launch a human milk bank in a large city in Turkey. Several previous papers reported women's opinions in large hospital based studies. Little is known about women's views and practice on donated human milk in the rural areas of Turkey...
January 16, 2018: Maternal and Child Health Journal
https://www.readbyqxmd.com/read/29340888/wet-cupping-therapy-improves-local-blood-perfusion-and-analgesic-effects-in-patients-with-nerve-root-type-cervical-spondylosis
#15
Xiang-Wen Meng, Ying Wang, Sheng-Ai Piao, Wen-Tao Lv, Cheng-Hui Zhu, Ming-Yuan Mu, Dan-Dan Li, Hua-Peng Liu, Yi Guo
OBJECTIVE: To observe wet cupping therapy (WCT) on local blood perfusion and analgesic effects in patients with nerve-root type cervical spondylosis (NT-CS). METHODS: Fifty-seven NT-CS patients were randomly divided into WCT group and Jiaji acupoint-acupuncture (JA) group according a random number table. WCT group (30 cases) was treated with WCT for 10 min, and JA group (27 cases) was treated with acupuncture for 10 min. The treatment effificacies were evaluated with a Visual Analogue Scale (VAS)...
January 15, 2018: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/29340327/trimethoprim-sulfamethoxazole-reduces-rates-of-melioidosis-in-high-risk-hemodialysis-patients
#16
Sandawana William Majoni, Jaquelyne T Hughes, Bianca Heron, Bart J Currie
Introduction: Melioidosis causes sepsis and death in the Top End of Northern Australia during the monsoonal wet season. Dialysis-dependent adults suffer higher melioidosis rates compared to low rates among renal transplant patients who routinely receive trimethoprim+sulfamethoxazole prophylaxis. Methods: We performed a prospective interventional study to determine the efficacy and safety of daily trimethoprim+sulfamethoxazole prophylaxis in hemodialysis patients during the wet season, from 1 November 2014 to 30 April 2015...
January 2018: KI Reports
https://www.readbyqxmd.com/read/29339266/long-term-trend-analysis-on-total-and-extreme-precipitation-over-shasta-dam-watershed
#17
Kinya Toride, Dylan L Cawthorne, Kei Ishida, M Levent Kavvas, Michael L Anderson
California's interconnected water system is one of the most advanced water management systems in the world, and understanding of long-term trends in atmospheric and hydrologic behavior has increasingly being seen as vital to its future well-being. Knowledge of such trends is hampered by the lack of long-period observation data and the uncertainty surrounding future projections of atmospheric models. This study examines historical precipitation trends over the Shasta Dam watershed (SDW), which lies upstream of one of the most important components of California's water system, Shasta Dam, using a dynamical downscaling methodology that can produce atmospheric data at fine time-space scales...
January 13, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29338881/infiltration-behaviour-of-elemental-mercury-dnapl-in-fully-and-partially-water-saturated-porous-media
#18
Andrea D'Aniello, Niels Hartog, Thomas Sweijen, Domenico Pianese
Mercury is a contaminant of global concern due to its harmful effects on human health and for the detrimental consequences of its release in the environment. Sources of liquid elemental mercury are usually anthropogenic, such as chlor-alkali plants. To date insight into the infiltration behaviour of liquid elemental mercury in the subsurface is lacking, although this is critical for assessing both characterization and remediation approaches for mercury DNAPL contaminated sites. Therefore, in this study the infiltration behaviour of elemental mercury in fully and partially water saturated systems was investigated using column experiments...
January 8, 2018: Journal of Contaminant Hydrology
https://www.readbyqxmd.com/read/29338325/comparative-evaluations-of-randomly-selected-four-point-of-care-glucometer-devices-in-addis-ababa-ethiopia
#19
Mistire Wolde, Getahun Tarekegn, Tedla Kebede
BACKGROUND: Point-of-care glucometer (PoCG) devices play a significant role in self-monitoring of the blood sugar level, particularly in the follow-up of high blood sugar therapeutic response. The aim of this study was to evaluate blood glucose test results performed with four randomly selected glucometers on diabetes and control subjects versus standard wet chemistry (hexokinase) methods in Addis Ababa, Ethiopia. METHOD: A prospective cross-sectional study was conducted on randomly selected 200 study participants (100 participants with diabetes and 100 healthy controls)...
January 1, 2018: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/29338208/hierarchical-composite-membranes-with-robust-omniphobic-surface-using-layer-by-layer-assembly-technique
#20
Yun Chul Woo, Youngjin Kim, Minwei Yao, Leonard Demegilio Tijing, Juneseok Choi, Sangho Lee, Seunghyun Kim, Hokyong Shon
In this study, composite membranes were fabricated via layer-by-layer (LBL) assembly of negatively-charged silica aerogel (SiA) and 1H, 1H, 2H, 2H - Perfluorodecyltriethoxysilane (FTCS) on a polyvinylidene fluoride phase inversion membrane, and interconnecting them with positively-charged poly(diallyldimethylammonium chloride) (PDDA) via electrostatic interaction. The results showed that the PDDA-SiA-FTCS coated membrane had significantly enhanced the membrane structure and properties. New trifluoromethyl and tetrafluoroethylene bonds appeared at the surface of the coated membrane, which led to lower surface free energy of the composite membrane...
January 16, 2018: Environmental Science & Technology
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