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https://www.readbyqxmd.com/read/28449549/fabrication-of-tio2-nanosheet-aarrays-graphene-cu2o-composite-structure-for-enhanced-photocatalytic-activities
#1
Jinzhao Huang, Ke Fu, Xiaolong Deng, Nannan Yao, Mingzhi Wei
TiO2 NSAs/graphene/Cu2O was fabricated on the carbon fiber to use as photocastalysts by coating Cu2O on the graphene (G) decorated TiO2 nanosheet arrays (NSAs). The research focus on constructing the composite structure and investigating the reason to enhance the photocatalytic ability. The morphological, structural, and photocatalytic properties of the as-synthesized products were characterized. The experimental results indicate that the better photocatalytic performance is ascribed to the following reasons...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28449391/flexible-semitransparent-and-inorganic-resistive-memory-based-on-bati0-95-co0-05-o3-film
#2
Yuxi Yang, Guoliang Yuan, Zhibo Yan, Yaojin Wang, Xubing Lu, Jun-Ming Liu
Perovskite ceramics and single crystals are commonly hard and brittle due to their small maximum elastic strain. Here, large-scale BaTi0.95 Co0.05 O3 (BTCO) film with a SrRuO3 (SRO) buffered layer on a 10 µm thick mica substrate is flexible with a small bending radius of 1.4 mm and semitransparent for visible light at wavelengths of 500-800 nm. Mica/SRO/BTCO/Au cells show bipolar resistive switching and the high/low resistance ratio is up to 50. The resistive-switching properties show no obvious changes after the 2...
April 27, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28449268/ventral-but-not-dorsal-hippocampus-inactivation-impairs-reward-memory-expression-and-retrieval-in-contexts-defined-by-proximal-cues
#3
Sadia Riaz, Anett Schumacher, Seyon Sivagurunathan, Matthijs Van Der Meer, Rutsuko Ito
The hippocampus (HPC) has been widely implicated in the contextual control of appetitive and aversive conditioning. However, whole hippocampal lesions do not invariably impair all forms of contextual processing, as in the case of complex biconditional context discrimination, leading to contention over the exact nature of the contribution of the HPC in contextual processing. Moreover, the increasingly well-established functional dissociation between the dorsal (dHPC) and ventral (vHPC) subregions of the HPC has been largely overlooked in the existing literature on hippocampal-based contextual memory processing in appetitively-motivated tasks...
April 27, 2017: Hippocampus
https://www.readbyqxmd.com/read/28449155/mitochondrial-dysfunction-in-diabetic-cardiomyopathy-effect-of-mesenchymal-stem-cell-with-ppar-%C3%AE-agonist-or-exendin-4
#4
Mohamed Abd Elaziz Wassef, Ola M Tork, Laila A Rashed, Walaa Ibrahim, Heba Morsi, Dina Mohamed Mekawy Rabie
Therapy targeting mitochondria may provide novel ways to treat diabetes and its complications. Bone marrow-derived mesenchymal stem cells (MSCs), the peroxisome proliferator-activated receptor gamma (PPAR-γ) agonists and exendin-4; an analog of glucagon-like peptide-1 have shown cardioprotective properties in many cardiac injury models. So, we evaluated their effects in diabetic cardiomyopathy (DCM) in relation to mitochondrial dysfunction. This work included seven groups of adult male albino rats: the control group, the non-treated diabetic group, and the treated diabetic groups: one group was treated with MSCs only, the second with pioglitazone only, the third with MSCs and pioglitazone, the forth with exendin-4 only and the fifth with MSCs and exendin-4...
April 27, 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/28448961/supported-binary-liposome-vesicle-gold-nanoparticle-for-enhanced-label-free-dna-and-protein-sensing
#5
Divya Karutha Pandian, Venkataraman Dharuman
Supported binary liposome mixture of cationic liposome N-[1-(2,3-Dioleoyloxy)propyl]-N,N,N-trimethylammonium propane (DOTAP) and the zwitterionic liposome 1,2-Dioleoyl-sn-Glycero-3-Phosphoethanolamine (DOPE) were tethered on thiol monolayers in the absence and presence of gold nanoparticle to enhance sensor stability and sensitivity for label free DNA and protein sensing for the first time. Cysteamine hydrochloride (Cyst), 3-Mercaptopropionic acid (MPA), 11-Mercaptoundecanoic acid (MUDA) and 11-amino-1-undecane thiol (AUT) monolayers were used as tethers on gold surfaces...
April 20, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28448912/effects-of-low-levels-of-ultraviolet-radiation-on-antioxidant-mechanisms-of-japanese-medaka-oryzias-latipes
#6
Wilson F Ramírez-Duarte, Tomofumi Kurobe, Swee J Teh
Extreme weather events like drought are expected to increase with climate change, which will increase exposure of freshwater fish to ultraviolet (UV) radiation. Compared to fully grown adult fish, fish in early life stages are more susceptible to UV radiation due to the lack of well-developed pigmentation. Even though several studies have described affectation of fish health after exposure to UV radiation, most of the studies have used intensities that are only found on the surface of the earth crust or at shallow depths in water bodies, and little is known about impacts of weaker UV radiation, which can be found in deep water...
April 20, 2017: Chemosphere
https://www.readbyqxmd.com/read/28448896/differentially-methylated-embryonal-fyn-associated-substrate-efs-gene-as-a-blood-specific-epigenetic-marker-and-its-potential-application-in-forensic-casework
#7
Athina Vidaki, Cecilia Johansson, Federica Giangasparo
DNA methylation patterns have the ability to reveal the activities of genes within a certain tissue at a particular time point. Tissue-specific DNA methylation patterns have been previously investigated for their applicability in the identification of forensically relevant body fluids, however there is still a lack in robust markers. While following a genome-wide scale investigation has a great potential to reveal useful tissue-specific changes, a gene-targeted approach can also lead to significant outcomes, especially in genomic locations not included in the genome-wide experiments...
April 19, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/28448884/antiproliferative-hydroxy-fatty-acids-from-the-fodder-legume-stylosanthes-guianensis
#8
Marco Clericuzio, Bruno Burlando, Barbara Borghesi, Annalisa Salis, Gianluca Damonte, Stefania Ribulla, Laura Cornara
Stylosanthes guianensis is a fodder legume native from South America and widely grown worldwide. Dried plant material was purchased on the web and taxonomically identified by light and SEM microscopy, and morphological analysis of plants germinated from seeds. The plant was extracted with dichloromethane:2-propanol (9:1). Bioguided fractionation using calcein-AM cytotoxicity assay on HeLa and A431 tumor cells allowed to isolate a lipophilic fraction, endowed with strong cytotoxicity. By means of 1- and 2-D NMR, HPLC-MS, and HR-ESIMS it could be seen that the fraction was an inseparable mixture of complex lipids, mainly consisting of esterified 3-hydroxy fatty acids...
April 17, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28448849/regulation-of-the-human-papillomavirus-type-16-late-promoter-by-transcriptional-elongation
#9
William K Songock, Matthew L Scott, Jason M Bodily
Transcripts from the late promoter of human papillomavirus type 16 (HPV16) are upregulated upon host cell differentiation. Differentiation-dependent transcript regulation is thought to sequester viral antigens in the uppermost epithelial layers, facilitating immune evasion. The mechanisms regulating late promoter upregulation during differentiation are poorly characterized. We show that the late promoter is upregulated at the transcriptional level and that the viral enhancer stimulates promoter activity. Using kinase inhibition and chromatin immunoprecipitation analysis, we show evidence for differentiation-dependent enhancement of transcript elongation...
April 24, 2017: Virology
https://www.readbyqxmd.com/read/28448832/fabrication-of-a-novel-z-scheme-g-c3n4-bi4o7-heterojunction-photocatalyst-with-enhanced-visible-light-driven-activity-toward-organic-pollutants
#10
Meng Sun, Yu Wang, Yu Shao, Yunhui He, Qi Zeng, Huikai Liang, Tao Yan, Bin Du
In this work, highly efficient g-C3N4/Bi4O7 heterojunction photocatalysts have been successfully fabricated by a facile method. Compared with the bare photocatalysts, the obtained g-C3N4/Bi4O7 hybrid photocatalysts exhibited efficient degradation activity toward methylene blue (MB), phenol, rhodamine B (RhB), and bisphenol A (BPA) under visible light irradiation. The influences of different g-C3N4 contents on the photocatalytic efficiency of the hybrid photocatalysts have been investigated. The results revealed that the g-C3N4/Bi4O7 with g-C3N4 mass ratio of 30% exhibited the best photocatalytic activity...
April 19, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28448790/drinking-and-driving-behavior-at-stop-signs-and-red-lights
#11
Jingyan Wan, Changxu Wu, Yiqi Zhang, Rebecca J Houston, Chang Wen Chen, Panya Chanawangsa
Alcohol is one of the principal risk factors for motor vehicle crashes. One factor that contributes to vehicle crashes is noncompliance with stop signs and red lights. The present experiment investigated the effects of alcohol and drinking patterns on driving behavior at stop signs and red lights. 28 participants participated in drinking and simulated driving sessions during which they received a moderate dose of alcohol (0.08% BAC) or a placebo. Simulated driving tasks measured participants' driving performance at stop signs and red lights in response to each dose...
April 24, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28448717/insight-on-structure-of-water-and-ice-next-to-graphene-using-surface-sensitive-spectroscopy
#12
Saranshu Singla, Emmanuel Anim-Danso, Ahmad E Islam, Yen Ngo, Steve S Kim, Rajesh R Naik, Ali Dhinojwala
The graphene/water interface has received considerable attention in the past decade due to its relevance in various potential applications including energy storage, sensing, desalination, and catalysis. Most of our knowledge about the interfacial water structure next to graphene stems from simulations, which use experimentally measured water contact angle (WCA) on graphene (or graphite) to estimate the water-graphene interaction strength. However, the existence of a wide spectrum of reported WCAs on supported graphene and graphitic surfaces makes it difficult to interpret the water-graphene interactions...
April 27, 2017: ACS Nano
https://www.readbyqxmd.com/read/28448626/genetic-background-dependent-effects-of-murine-micro-rnas-on-circadian-clock-function
#13
Silke Kiessling, Ahmet Ucar, Kamal Chowdhury, Henrik Oster, Gregor Eichele
MicroRNAs (miRs) are important regulators of a wide range of biological processes. Antagomir studies suggest an implication of miR-132 in the functionality of the mammalian circadian clock. miR-212 and miR-132 are tandemly processed from the same transcript and share the same seed region. We found the clock modulator miR-132 and miR-212 to be expressed rhythmically in the central circadian clock. Consequently, mRNAs implicated in circadian functions may likely be targeted by both miRs. To further characterize the circadian role we generated mice with stable deletion of the miR-132/212 locus and compared the circadian behavior of mutant and wild-type control animals on two genetic backgrounds frequently used in chronobiological research, C57BL/6N and 129/Sv...
2017: PloS One
https://www.readbyqxmd.com/read/28448574/fusion-expression-of-occludin-extracellular-loops-and-an-%C3%AE-helical-bundle-a-new-research-model-for-tight-junction
#14
Xiaojing Chi, Xia Zhao, Wei Wang, Yuqiang Niu, Min Cheng, Xiuying Liu, Sheng Cui, Wei Yang
Tight junctions (TJs) are the outermost structures of intercellular junctions and are highly specialized membrane domains involved in many important cellular processes. However, most TJ proteins are four-time transmembrane proteins and are difficult to express in their correct soluble form, which limits their functional study and therapeutic application. Human occludin (OCLN) is a major component of TJs and an essential co-receptor for hepatitis C virus (HCV) cell entry. To explore expression strategy for recombinant TJ proteins possessing integrated and functional extracellular loops, OCLN was here used as a model molecule, and several prokaryotic fusion constructs were designed by docking OCLN extracellular loops (ECLs) to HIV-1 gp41 NHR and CHR six-helical bundle (6HV1); then their biophysical features and anti-HCV activity were evaluated...
2017: PloS One
https://www.readbyqxmd.com/read/28448563/corticosteroids-effects-on-lps-induced-rat-inflammatory-keratocyte-cell-model
#15
Huize Yan, Yingwei Wang, Shuhao Shen, Zheng Wu, Pengxia Wan
PURPOSE: Corticosteroids are efficient anti-inflammation treatments. However, there are still arguments on whether it should be used in keratitis. This study was to observe the effect of corticosteroids on keratocytes both in normal condition and inflammation status in vitro. METHODS: Rat keratocytes were cultured and used for examination. 10 μg/ml lipopolysaccharide (LPS) was used to establish the inflammatory keratocyte cell model, and prednisolone acetate (PA), dexamethasone (Dex) and fluorometholone (Flu) were used as corticosteroids treatments...
2017: PloS One
https://www.readbyqxmd.com/read/28448534/intense-light-elicited-upregulation-of-mir-21-facilitates-glycolysis-and-cardioprotection-through-per2-dependent-mechanisms
#16
Colleen Marie Bartman, Yoshimasa Oyama, Kelley Brodsky, Ludmila Khailova, Lori Walker, Michael Koeppen, Tobias Eckle
A wide search for ischemic preconditioning (IPC) mechanisms of cardioprotection identified the light elicited circadian rhythm protein Period 2 (Per2) to be cardioprotective. Studies on cardiac metabolism found a key role for light elicited Per2 in mediating metabolic dependence on carbohydrate metabolism. To profile Per2 mediated pathways following IPC of the mouse heart, we performed a genome array and identified 352 abundantly expressed and well-characterized Per2 dependent micro RNAs. One prominent result of our in silico analysis for cardiac Per2 dependent micro RNAs revealed a selective role for miR-21 in the regulation of hypoxia and metabolic pathways...
2017: PloS One
https://www.readbyqxmd.com/read/28448373/effects-of-parental-stress-optimism-and-health-promoting-behaviors-on-the-quality-of-life-of-primiparous-and-multiparous-mothers
#17
Jennifer Loh, Craig Harms, Bronwyn Harman
BACKGROUND: Parental stress, optimism, and health-promoting behaviors (HPBs) are important predictors of the quality of life (QoL) of mothers. However, it is unclear how strongly these predictors affect the QoL of mothers. It is also unclear if the impact of these predictors on QoL differs between primiparous and multiparous mothers. In this study, we defined primiparous as "bearing young for the first time" and multiparous as "having experienced one or more previous childbirths." OBJECTIVES: The first objective of this study was to examine the relative effect of parental stress, optimism, and HPBs on the QoL of mothers...
May 2017: Nursing Research
https://www.readbyqxmd.com/read/28448296/the-use-of-the-moleculight-i-x-in-managing-burns-a-pilot-study
#18
Emily Blumenthal, Steven L A Jeffery
The MolecuLight i:X Imaging Device is a portable, noninvasive, real-time camera used to visualize the bacterial load in a wound. It uses violet light illumination and a dual bandpass optical filter to capture the fluorescence of endogenous structures in the tissue matrix and harmful bacteria. The MolecuLight i:X captures images of wounds and highlights potentially detrimental levels of bacteria. This is an initial evaluation of using the MolecuLight i:X camera in the management of burns to demonstrate the following: the ability of the device to guide clinicians in their management of the burn (ie, detect, identify, and specify swabbing locations)...
April 21, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28448295/the-role-of-mitochondrial-stress-in-muscle-wasting-following-severe-burn-trauma
#19
John O Ogunbileje, David N Herndon, Andrew J Murton, Craig Porter
Increased resting metabolic rate (hypermetabolism) and skeletal muscle wasting are hallmarks of the pathophysiological stress response to severe burn trauma. However, whether these two responses occur independently in burn patients or are in fact related remains unclear. In light of recent evidence demonstrating that increased proteolysis in skeletal muscle of burned patients is accompanied by mitochondrial hypermetabolism, oxidative stress, and protein damage; in this article, we discuss the evidence for a role for the mitochondrion in skeletal muscle wasting following severe burn trauma...
April 21, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28448276/white-light-emission-of-monolithic-ingan-gan-grown-on-morphology-controlled-nanostructured-gan-templates
#20
Keun Man Song, Do Hyun Kim, Jong Min Kim, Chu-Young Cho, Jehyuk Choi, Ka Hee Kim, Jinsub Park, Hogyoung Kim
We demonstrated an InGaN/GaN-based, monolithic, white light-emitting diode (LED) without phosphors by using morphology-controlled active layers formed on multi-facet GaN templates containing polar and semipolar surfaces. The nanostructured surface morphology was controlled by changing the growth time, and distinct multiple photoluminescence peaks were observed at 360, 460, and 560 nm; these features were caused by InGaN/GaN-based multiple quantum wells (MQWs) on the nanostructured facets. The origin of each multi-peak was related to the different indium (In) compositions in the different planes of the quantum wells grown on the nanostructured GaN...
April 27, 2017: Nanotechnology
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