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https://www.readbyqxmd.com/read/29786887/perovskite-solar-cells-with-inorganic-electron-and-hole-transport-layers-exhibiting-long-term-%C3%A2-500-h-stability-at-85-%C3%A2-c-under-continuous-1-sun-illumination-in-ambient-air
#1
Seongrok Seo, Seonghwa Jeong, Changdeuck Bae, Nam-Gyu Park, Hyunjung Shin
Despite the high power conversion efficiency (PCE) of perovskite solar cells (PSCs), poor long-term stability is one of the main obstacles preventing their commercialization. Several approaches to enhance the stability of PSCs have been proposed. However, an accelerating stability test of PSCs at high temperature under the operating conditions in ambient air remains still to be demonstrated. Herein, interface-engineered stable PSCs with inorganic charge-transport layers are shown. The highly conductive Al-doped ZnO films act as efficient electron-transporting layers as well as dense passivation layers...
May 22, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29786827/the-protective-effect-of-montelukast-against-skeletal-muscle-ischemia-reperfusion-injury-an-experimental-rat-model
#2
Mehmet İlker Bilgiç, Güray Altun, Hüsamettin Çakıcı, Kaan Gideroğlu, Gürsel Saka
BACKGROUND: Montelukast is a selective leukotriene D-4 receptor antagonist, which specifically and reversibly inhibits cysteinyl leukotriene-1 receptor. The aim of this study was to investigate the protective effect of Montelukast on skeletal muscle reperfusion injury created as acute ischemia-reperfusion (IR) injury in Wistar-albino rats. METHODS: The study comprised 16 male Wistar-albino rats. The rats were randomly separated into two groups as control (IR) and treatment (IR+Montelukast)...
May 2018: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/29786745/histone-modifications-in-fatty-acid-synthase-modulated-by-carbohydrate-responsive-element-binding-protein-are-associated-with-non%C3%A2-alcoholic-fatty-liver-disease
#3
Can Cai, Huihong Yu, Guangming Huang, Xuan Du, Xiaoqing Yu, Youping Zhou, Wei Shen
Non‑alcoholic fatty liver disease (NAFLD) is a manifestation of metabolic syndrome in the liver and is closely associated with diabetes; however, its pathogenesis remains to be elucidated. Carbohydrate responsive element binding protein (ChREBP), the hub of glucolipid metabolism, regulates the induction of fatty acid synthase (FASN), the key enzyme of de novo lipogenesis, by directly binding to carbohydrate response element (ChoRE) in its promoter. Investigations of histone modifications on NAFLD remain in their infancy...
May 22, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29786723/a-highly-sensitive-and-fast-graphene-nanoribbon-cspbbr-3-quantum-dot-phototransistor-with-enhanced-vertical-metal-oxide-heterostructures
#4
Xiang Liu, Wenjian Kuang, Haibing Ni, Zhi Tao, Qianqian Huang, Jing Chen, Qingquan Liu, Jianhua Chang, Wei Lei
Although recent breakthroughs in reported graphene-based phototransistors with embedded quantum dots (QDs) have definitely been astonishing, there are still some obstacles in their practical use with regard to their electrical and optical performances. We show that through optimization of the vertical graphene nanoribbon (GNR)/QD/IGZO heterostructure and the ultrahigh efficiency of CsPbBr3 QDs, it is possible to significantly increase the on/off ratio (>103), the subthreshold slope (S.S., 0.9 V dec-1), the device's field effect mobility (μFET, 13 cm-1 V-1 S-1) and other electrical properties...
May 22, 2018: Nanoscale
https://www.readbyqxmd.com/read/29786656/temperature-effects-on-force-and-actin%C3%A2-myosin-interaction-in-muscle-a-look-back-on-some-experimental-findings
#5
REVIEW
K W Ranatunga
Observations made in temperature studies on mammalian muscle during force development, shortening, and lengthening, are re-examined. The isometric force in active muscle goes up substantially on warming from less than 10 °C to temperatures closer to physiological (>30 °C), and the sigmoidal temperature dependence of this force has a half-maximum at ~10 °C. During steady shortening, when force is decreased to a steady level, the sigmoidal curve is more pronounced and shifted to higher temperatures, whereas, in lengthening muscle, the curve is shifted to lower temperatures, and there is a less marked increase with temperature...
May 22, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29786642/determining-the-radiation-enhancement-effects-of-gold-nanoparticles-in-cells-in-a-combined-treatment-with-cisplatin-and-radiation-at-therapeutic-megavoltage-energies
#6
Celina Yang, Kyle Bromma, Wonmo Sung, Jan Schuemann, Devika Chithrani
Combined use of chemotherapy and radiation therapy is commonly used in cancer treatment, but the toxic effects on normal tissue are a major limitation. This study assesses the potential to improve radiation therapy when combining gold nanoparticle (GNP) mediated radiation sensitization with chemoradiation compared to chemoradiation alone. Incorporation of GNPs with 2 Gy, 6 MV (megavoltage) radiation resulted in a 19 ± 6% decrease in survival of MDA-MB-231 cells. Monte-Carlo simulations were performed to assess dosimetric differences in the presence of GNPs in radiation...
May 22, 2018: Cancers
https://www.readbyqxmd.com/read/29786628/influence-of-team-s-rank-on-soccer-referees-external-and-internal-match-loads-during-official-matches
#7
Daniel Castillo, Carlo Castagna, Jesús Cámara, Aitor Iturricastillo, Javier Yanci
Castillo, D, Castagna, C, Cámara, J, Iturricastillo, A, and Yanci, J. Influence of team's rank on soccer referees' external and internal match loads during official matches. J Strength Cond Res 32(6): 1715-1722, 2018-The aim was to examine the external and the internal match loads (ML) of field referees (FRs) attending teams of different ranking during championship matches. Twenty FR who officiated in 30 official soccer matches (30 observations) participated in our study. The criteria for allocating the soccer referees' ML results were based on the teams' final league positions as follows: matches performed by Top 10 teams (TOP10), matches performed by bottom 10 teams (BOT10), and matches played among TOP10 and BOT10 teams (MIXED)...
June 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29785926/intramedullary-nail-fixation-versus-locking-plate-fixation-for-adults-with-a-fracture-of-the-distal-tibia-the-uk-fixdt-rct
#8
Matthew L Costa, Juul Achten, Susie Hennings, Nafisa Boota, James Griffin, Stavros Petrou, Mandy Maredza, Melina Dritsaki, Thomas Wood, James Masters, Ian Pallister, Sarah E Lamb, Nick R Parsons
BACKGROUND: The best treatment for fractures of the distal tibia remains controversial. Most of these fractures require surgical fixation, but the outcomes are unpredictable and complications are common. OBJECTIVES: To assess disability, quality of life, complications and resource use in patients treated with intramedullary (IM) nail fixation versus locking plate fixation in the 12 months following a fracture of the distal tibia. DESIGN: This was a multicentre randomised trial...
May 2018: Health Technology Assessment: HTA
https://www.readbyqxmd.com/read/29785886/treatment-of-homozygous-familial-hypercholesterolaemia-in-paediatric-patients-a-monocentric-experience
#9
Paola S Buonuomo, Marina Macchiaiolo, Giovanna Leone, Paola Valente, Gerarda Mastrogiorgio, Maria Gnazzo, Ippolita Rana, Michaela V Gonfiantini, Maria G Gagliardi, Francesca Romano, Andrea Bartuli
Background Homozygous familial hypercholesterolaemia is a rare life-threatening disease characterized by markedly elevated low-density lipoprotein cholesterol (LDL-C) concentrations and accelerated atherosclerosis. The presence of double gene defects in the LDL-Receptor, either the same defect (homozygous) or two different LDL-raising mutations (compound heterozygotes) or other variants, identify the homozygous phenotype (HopFH). Apheresis is a procedure in which plasma is separated from red blood cells before the physical removal of LDL-C or the LDL-C is directly removed from whole blood...
January 1, 2018: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/29785729/tg-51-reference-dosimetry-for-the-halcyon%C3%A2-a-clinical-experience
#10
Samantha A M Lloyd, Tze Yee Lim, Xenia Fave, Everardo Flores-Martinez, Todd F Atwood, Vitali Moiseenko
Halcyon™ is a single-energy (6 MV-FFF), bore-enclosed linear accelerator. Patient setup is performed by first aligning to external lasers mounted to the front of the bore, and then loading to isocenter through pre-defined couch shifts. There is no light field, optical distance indicator or front pointer mechanism, so positioning is verified through MV imaging with kV imaging scheduled to become available in the future. TG-51 reference dosimetry was successfully performed for Halcyon™ in this imaging-based setup paradigm...
May 21, 2018: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/29785664/effect-of-pneumatic-tubing-system-transport-on-platelet-apheresis-units
#11
Jevgenia Zilberman-Rudenko, Frank Z Zhao, Stephanie E Reitsma, Annachiara Mitrugno, Jiaqing Pang, Joseph J Shatzel, Beth Rick, Christina Tyrrell, Wohaib Hasan, Owen J T McCarty, Martin A Schreiber
Platelet apheresis units are transfused into patients to mitigate or prevent bleeding. In a hospital, platelet apheresis units are transported from the transfusion service to the healthcare teams via two methods: a pneumatic tubing system (PTS) or ambulatory transport. Whether PTS transport affects the activity and utility of platelet apheresis units is unclear. We quantified the gravitational forces and transport time associated with PTS and ambulatory transport within our hospital. Washed platelets and supernatants were prepared from platelet apheresis units prior to transport as well as following ambulatory or PTS transport...
May 21, 2018: Cardiovascular Engineering and Technology
https://www.readbyqxmd.com/read/29785596/biochar-reduces-nitrate-level-in-red-beet
#12
Josef Maroušek, Ladislav Kolář, Marek Vochozka, Vojtěch Stehel, Anna Maroušková
Impacts of red beet consumption both on human and animal health are subject of intense research. In particular, products that are not heat-processed contain plethora of bioactive compounds that hold promise against numerous degenerative and aging-associated diseases. However, high level of nitrates (typically more than 2 g NO3 - kg-1 ) whose health effects are perceived with reasoned objections counterbalance these benefits. Following the above, from a certain level, the increased consumption of red beet has contrary impacts, creating a limiting factor not only from the economic point of view but also in terms of beneficial compounds intake...
May 21, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29785517/optimization-and-enhancement-of-textile-reactive-remazol-black-b-decolorization-and-detoxification-by-environmentally-isolated-ph-tolerant-pseudomonas-aeruginosa-ky284155
#13
Rasha A Hashem, Reham Samir, Tamer M Essam, Amal E Ali, Magdy A Amin
Azo dyes are complex derivatives of diazene used in food and textile manufacture. They are highly recalcitrant compounds, and account for severe environmental and health problems. Different strains of Pseudomonas species were isolated from textile wastewater effluents. The bioconversion of Remazol black B (a commonly used water soluble dye) by Pseudomonas aeruginosa was observed in static conditions. The bio-decolorization process was optimized by a multi factorial Plackett-Burman experimental design. Decolorization of 200 mg L-1 reached 100% in 32 h...
May 21, 2018: AMB Express
https://www.readbyqxmd.com/read/29785468/competition-for-electrons-between-mono-oxygenations-of-pyridine-and-2-hydroxypyridine
#14
Chao Yang, Yingxia Tang, Hua Xu, Ning Yan, Naiyu Li, Yongming Zhang, Bruce E Rittmann
Pyridine and its heterocyclic derivatives are widely encountered in industrial wastewaters, and they are relatively recalcitrant to biodegradation. Pyridine biodegradation is initiated by two mono-oxygenation reactions that compete for intracellular electron donor (2H). In our experiments, UV photolysis of pyridine generated succinate, whose oxidation augmented the intracellular electron donor and accelerated pyridine biodegradation and mineralization. The first mono-oxygenation reaction always was faster than the second one, because electrons provided by intracellular electron donors were preferentially utilized by the first mono-oxygenase; this was true even when the concentration of 2HP was greater than the concentration of pyridine...
May 21, 2018: Biodegradation
https://www.readbyqxmd.com/read/29785266/atypical-teratoid-rhabdoid-tumor-in-a-65-year-old-man-presenting-with-disseminated-leptomeningeal-disease-a-case-report-and-review-of-the-literature
#15
Marc-Alain Babi, Peter Fecci, Matthew Luedke, Olinda Pineda, Yasmin Ali O'Keefe
Central nervous system atypical teratoid rhabdoid tumors are very rare aggressive tumor of childhood, primarily occurring at age of less than 3 years old. The prognosis of these tumors is very poor, with a reported median survival of 6-12 months in most cases. Treatment typically consists of aggressive chemotherapy and radiotherapy. We present the case of a 65-year-old man who presented with progressive encephalopathy and change in personality over 3 months period. The patient had further accelerated decline over 3 weeks...
2018: SAGE Open Medical Case Reports
https://www.readbyqxmd.com/read/29785241/an-in-vivo-zebrafish-model-for-interrogating-ros-mediated-pancreatic-%C3%AE-cell-injury-response-and-prevention
#16
Abhishek A Kulkarni, Abass M Conteh, Cody A Sorrell, Anjali Mirmira, Sarah A Tersey, Raghavendra G Mirmira, Amelia K Linnemann, Ryan M Anderson
It is well known that a chronic state of elevated reactive oxygen species (ROS) in pancreatic β -cells impairs their ability to release insulin in response to elevated plasma glucose. Moreover, at its extreme, unmitigated ROS drives regulated cell death. This dysfunctional state of ROS buildup can result both from genetic predisposition and environmental factors such as obesity and overnutrition. Importantly, excessive ROS buildup may underlie metabolic pathologies such as type 2 diabetes mellitus. The ability to monitor ROS dynamics in β -cells in situ and to manipulate it via genetic, pharmacological, and environmental means would accelerate the development of novel therapeutics that could abate this pathology...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29785087/transcriptomic-impacts-of-rumen-epithelium-induced-by-butyrate-infusion-in-dairy-cattle-in-dry-period
#17
Ransom L Baldwin, Robert W Li, Yankai Jia, Cong-Jun Li
The purpose of this study was to evaluate the effects of butyrate infusion on rumen epithelial transcriptome. Next-generation sequencing (NGS) and bioinformatics are used to accelerate our understanding of regulation in rumen epithelial transcriptome of cattle in the dry period induced by butyrate infusion at the level of the whole transcriptome. Butyrate, as an essential element of nutrients, is a histone deacetylase (HDAC) inhibitor that can alter histone acetylation and methylation, and plays a prominent role in regulating genomic activities influencing rumen nutrition utilization and function...
2018: Gene Regulation and Systems Biology
https://www.readbyqxmd.com/read/29785009/physical-activity-sleep-and-fatigue-in-community-dwelling-stroke-survivors
#18
Anthony I Shepherd, Richard Pulsford, Leon Poltawski, Anne Forster, Rod S Taylor, Anne Spencer, Laura Hollands, Martin James, Rhoda Allison, Meriel Norris, Raff Calitri, Sarah G Dean
Stroke can lead to physiological and psychological impairments and impact individuals' physical activity (PA), fatigue and sleep patterns. We analysed wrist-worn accelerometry data and the Fatigue Assessment Scale from 41 stroke survivors following a physical rehabilitation programme, to examine relationships between PA levels, fatigue and sleep. Validated acceleration thresholds were used to quantify time spent in each PA intensity/sleep category. Stroke survivors performed less moderate to vigorous PA (MVPA) in 10 minute bouts than the National Stroke guidelines recommend...
May 21, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29784986/a-workflow-for-the-integrative-transcriptomic-description-of-molecular-pathology-and-the-suggestion-of-normalizing-compounds-exemplified-by-parkinson-s-disease
#19
Mohamed Hamed, Yvonne Gladbach, Steffen Möller, Sarah Fischer, Mathias Ernst, Stephan Struckmann, Alexander Storch, Georg Fuellen
The volume of molecular observations on human diseases in public databases is continuously increasing at accelerating rates. A bottleneck is their computational integration into a coherent description, from which researchers may derive new well-founded hypotheses. Also, the need to integrate data from different technologies (genetics, coding and regulatory RNA, proteomics) emerged in order to identify biomarkers for early diagnosis and prognosis of complex diseases and therefore facilitating the development of novel treatment approaches...
May 21, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29784786/two-ck1%C3%AE-transcripts-regulated-by-m6a-methylation-code-for-two-antagonistic-kinases-in-the-control-of-the-circadian-clock
#20
Jean-Michel Fustin, Rika Kojima, Kakeru Itoh, Hsin-Yi Chang, Ye Shiqi, Bowen Zhuang, Asami Oji, Shingo Gibo, Rajesh Narasimamurthy, David Virshup, Gen Kurosawa, Masao Doi, Ichiro Manabe, Yasushi Ishihama, Masahito Ikawa, Hitoshi Okamura
The N 6 -methylation of internal adenosines (m6A) in mRNA has been quantified and localized throughout the transcriptome. However, the physiological significance of m6A in most highly methylated mRNAs is unknown. It was demonstrated previously that the circadian clock, based on transcription-translation negative feedback loops, is sensitive to the general inhibition of m6A. Here, we show that the Casein Kinase 1 Delta mRNA ( Ck1δ ), coding for a critical kinase in the control of circadian rhythms, cellular growth, and survival, is negatively regulated by m6A...
May 21, 2018: Proceedings of the National Academy of Sciences of the United States of America
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