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Cycling performance

Chi Ma, Fenghua Wang, Chang Zhang, Zhigang Yu, Jingjing Wei, Zhongzhu Yang, Yongqiu Li, Zihao Li, Mengying Zhu, Liuqing Shen, Guangming Zeng
The new nanophotocatalyst MgZnCr-TiO2 was prepared by co-precipitation under different molar ratio of metals (Zn:Cr) and the loaded amount of TiO2. And it was characterized by X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy et al. Langmuir model fitted well the adsorption isotherm with the value of R(2) 0.9765, the maximum adsorption capacity was 526.32 mg g(-1), the adsorption followed pseudo second order kinetic by MgZnCr-TiO2 (1:1:2-0.05). The photocatalytic oxidation of Congo red was used to determine the photocatalytic performance of MgZnCr-TiO2 (1:1:2-0...
October 21, 2016: Chemosphere
Adewale L Oyeyemi, Terry L Conway, Rufus A Adedoyin, Kingsley K Akinroye, Richmond Aryeetey, Felix Assah, Kelli L Cain, Kavita A Gavand, Sandra S Kasoma, Tracy L Kolbe-Alexander, Estelle V Lambert, Richard Larouche, Sarah J Mos, Reginald Ocansey, Vincent O Onywera, Antonio Prista, Mark S Tremblay, James F Sallis
PURPOSE: Development of valid measures of built environments relevant for physical activity is an important step toward controlling the global epidemic of physical inactivity-related non-communicable diseases and deaths. This study assessed the construct validity of a self-report neighborhood environment walkability scale adapted for Africa (NEWS-Africa), by examining relationships with self-reported walking for transportation and recreation using pooled data from six sub-Saharan African countries...
October 21, 2016: Medicine and Science in Sports and Exercise
Yongxin Guan, Yangyang Feng, Yanping Mu, Ling Fang, Huijuan Zhang, Yu Wang
Known as an excellent energy storage material, ZnMn2O4 has a wide range of applications in supercapacitors. In this report, a special sandwich-like structure of ZnMn2O4/C has been first designed and synthesized via a simple hydrothermal method and subsequent calcinations. The designed special sandwich-like structure can benefit ion exchange and remit the probable volume changes during a mass of electrochemical reactions. Furthermore, the porous carbon nanosheets, derived from low-cost glucose, can effectively increase ion flux...
October 24, 2016: Nanotechnology
Wonchul Cho, Hye Jin Kim, Hae In Lee, Myung Won Seo, Ho Won Ra, Sang Jun Yoon, Tae-Young Mun, Yong Ku Kim, Jae Ho Kim, Bo Hwa Kim, Jin Woo Kook, Chung-Yul Yoo, Jae Goo Lee, Jang Wook Choi
Nanostructured silicon (Si) is useful in many applications, and has typically been synthesized by bottom-up colloid-based solution processes or top-down gas phase reactions at high temperatures. These methods, however, suffer from toxic precursors, low yields, and impractical processing conditions (i.e., high pressure). The magnesiothermic reduction of silicon oxide (SiO2) has also been introduced as an alternative method. Here, we demonstrate the reduction of SiO2 by a simple milling process using a lab-scale planetary-ball mill and industry-scale attrition-mill...
October 24, 2016: Nano Letters
Angela Sorice, Francesco Siano, Francesca Capone, Eliana Guerriero, Gianluca Picariello, Alfredo Budillon, Gennaro Ciliberto, Marina Paolucci, Susan Costantini, Maria Grazia Volpe
In this study, a hydroalcoholic chestnut shell extract was characterized and tested on six different human cell lines. Gallic, ellagic, and syringic acids were the most abundant non-condensed compounds in the chestnut extract, as determined by high performance liquid chromatography (HPLC). Tannins were mainly represented by condensed monomeric units of epigallocatechin and catechin/epicatechin. After 48 h of treatment, only the human hepatoblastoma HepG2 cells reached an inhibition corresponding to IC50 with an increase of apoptosis and mitochondrial depolarization...
October 21, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Kaiyu Qian, Gang Wang, Rui Cao, Tao Liu, Guofeng Qian, Xinyuan Guan, Zhongqiang Guo, Yu Xiao, Xinghuan Wang
Capsaicin (CAP), a highly selective agonist for transient receptor potential vanilloid type 1 (TRPV1), has been widely reported to exhibit anti-oxidant, anti-inflammation and anticancer activities. Currently, several therapeutic approaches for bladder cancer (BCa) are available, but accompanied by unfavorable outcomes. Previous studies reported a potential clinical effect of CAP to prevent BCa tumorigenesis. However, its underlying molecular mechanism still remains unknown. Our transcriptome analysis suggested a close link among calcium signaling pathway, cell cycle regulation, ROS metabolism and FOXO signaling pathway in BCa...
October 21, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
J Rodrigo Magana, Yury V Kolen'ko, Francis Leonard Deepak, Conxita Solans, Rekha Goswami Shrestha, Jonathan P Hill, Katsuhiko Ariga, Lok Kumar Shrestha, Carlos Rodriguez-Abreu
Carbon nanofibers (CNFs) with high surface area (820 m2/g) have been successfully prepared by a nanocasting approach using silica nanofibers obtained from chromonic liquid crystals as a template. CNFs with randomly oriented graphitic layers show outstanding electrochemical supercapacitance performance exhibiting a specific capacitance of 327 F/g at a scan rate of 5 mV/s with long life cycling capability. Approximately 95% capacitance retention is observed after 1000 charge-discharge cycles. Furthermore, about 80% of capacitance is retained at higher scan rates (up to 500 mV/s) and current densities (from 1 to 10 A/g)...
October 24, 2016: ACS Applied Materials & Interfaces
Yawen Wang, Le Yu, Xiong Wen David Lou
Unique triple-shelled Mo-polydopamine (Mo-PDA) hollow spheres are synthesized through a facile solvothermal process. A sequential self-templating mechanism for the multi-shell formation is proposed, and the number of shells can be adjusted by tuning the size of the Mo-glycerate templates. These triple-shelled Mo-PDA hollow spheres can be converted to triple-shelled MoO2 /carbon composite hollow spheres by thermal treatment. Owing to the unique multi-shells and hollow interior, the as-prepared MoO2 /carbon composite hollow spheres exhibit appealing performance as an anode material for lithium-ion batteries, delivering a high capacity of ca...
October 24, 2016: Angewandte Chemie
B N Keel, J W Keele, W M Snelling
Copy number variations (CNVs) are large insertions, deletions or duplications in the genome that vary between members of a species and are known to affect a wide variety of phenotypic traits. In this study, we identified CNVs in a population of bulls using low coverage next-generation sequence data. First, in order to determine a suitable strategy for CNV detection in our data, we compared the performance of three distinct CNV detection algorithms on benchmark CNV datasets and concluded that using the multiple sample read depth approach was the best method for identifying CNVs in our sequences...
October 24, 2016: Animal Genetics
Takashi Dejima, Kenjiro Imada, Ario Takeuchi, Masaki Shiota, Jeffrey Leong, Tabitha Tombe, Kevin Tam, Ladan Fazli, Seiji Naito, Martin E Gleave, Christopher J Ong
BACKGROUND: LIM and SH3 domain protein 1 (LASP1) has been implicated in several human malignancies and has been shown to predict PSA recurrence in prostate cancer. However, the anti-tumor effect of LASP1 knockdown and the association between LASP1 and the androgen receptor (AR) remains unclear. The aim of this study is to clarify the significance of LASP1 as a target for prostate cancer, and to test the effect of silencing LASP1 in vivo using antisense oligonucleotides (ASO). METHODS: A tissue microarray (TMA) was performed to characterize the differences in LASP1 expression in prostate cancer treated after hormone deprivation therapy...
October 24, 2016: Prostate
Jae-Wan Park, Cheol-Min Park
The development of new anode materials having high electrochemical performances and interesting reaction mechanisms is highly required to satisfy the need for long-lasting mobile electronic devices and electric vehicles. Here, we report a layer crystalline structured SnP3 and its unique electrochemical behaviors with Li. The SnP3 was simply synthesized through modification of Sn crystallography by combination with P and its potential as an anode material for LIBs was investigated. During Li insertion reaction, the SnP3 anode showed an interesting two-step electrochemical reaction mechanism comprised of a topotactic transition (0...
October 24, 2016: Scientific Reports
Hyung-Youl Park, Sreekantha Reddy Dugasani, Dong-Ho Kang, Gwangwe Yoo, Jinok Kim, Bramaramba Gnapareddy, Jaeho Jeon, Minwoo Kim, Young Jae Song, Sungjoo Lee, Jonggon Heo, Young Jin Jeon, Sung Ha Park, Jin-Hong Park
Here, we report a high performance biosensor based on (i) a Cu(2+)-DNA/MoS2 hybrid structure and (ii) a field effect transistor, which we refer to as a bio-FET, presenting a high sensitivity of 1.7 × 10(3) A/A. This high sensitivity was achieved by using a DNA nanostructure with copper ions (Cu(2+)) that induced a positive polarity in the DNA (receptor). This strategy improved the detecting ability for doxorubicin-like molecules (target) that have a negative polarity. Very short distance between the biomolecules and the sensor surface was obtained without using a dielectric layer, contributing to the high sensitivity...
October 24, 2016: Scientific Reports
Shengnan Guo, Yuanyuan Wang, Yu Gao, Yinxu Zhang, Mingzi Chen, Minghao Xu, Lu Hu, Yu Jing, Fangyu Jing, Chen Li, Qingjun Wang, Zhitu Zhu
BACKGROUND High mobility group-box 3 (HMGB3) has been shown to affect tumor initiation and progression. This research aimed to investigate the role of HMGB3 in gastric cancer (GC) cell proliferation, migration, invasion, chemoresistance, and its potential molecular mechanisms. MATERIAL AND METHODS GC MGC803 and BGC823 cells were transfected with siRNA targeting the HMGB3 gene. The expressions of HMGB3 protein in MGC803 and BGC823 cells after transfection were detected by Western blot assays. We detected cell proliferation and cell cycle by MTT and flow cytometry assay...
October 24, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
Ömer Dag, Fadime Mert Balcı, Ömer Ulaş Kudu, Eda Yilmaz
Mesoporous Li4Ti5O12 (LTO) thin film is an important anode material for lithium-ion batteries (LIBs). Mesoporous films could be prepared by self-assembly processes. Here we employed a molten salt assisted self-assembly (MASA) process to prepare mesoporous thin films of LTOs. A clear ethanol solution of CTAB, P123, LiNO3, HNO3, and Ti(OC4H9)4 form a gel-like meso-ordered films upon either by spin or spray coating. In the assembly process, The CTAB/P123 mole ratio of 14 is required to accommodate enough salt species in the mesophase, where the Li(I)/P123 can be varied between a mole ratio of 28 and 72...
October 23, 2016: Chemistry: a European Journal
C I Fiedler, E A Aisenbrey, J A Wahlquist, C M Heveran, V L Ferguson, S J Bryant, R R McLeod
Current hydrogels used for tissue engineering are limited to a single range of mechanical properties within the replicated tissue construct. We show that repeated in-swelling by a single hydrogel pre-cursor solution into an existing polymerized hydrogel followed by photo-exposure increases hydrogel mechanical properties. The process is demonstrated with a photo-clickable thiol-ene hydrogel using a biocompatible precursor solution of poly(ethylene glycol) dithiol and 8-arm poly(ethylene glycol) functionalized with norbornene...
October 24, 2016: Soft Matter
Jinqiang Zhang, Bing Sun, Xiuqiang Xie, Yufei Zhao, Guoxiu Wang
An organic bifunctional catalyst poly(2,2,6,6-tetramethylpiperidinyloxy-4-yl methacrylate) (PTMA) has been prepared and coated on carbon surface during electrode preparation. The PTMA has been applied as an efficient bifunctional catalyst for lithium-oxygen batteries with lower overpotentials, enhanced rate performances, and prolonged cycle life.
April 2016: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
Wenyue Li, Zhenyu Zhang, Yongbing Tang, Haidong Bian, Tsz-Wai Ng, Wenjun Zhang, Chun-Sing Lee
3D graphene-nanowall-decorated carbon felts (CF) are synthesized via an in situ microwave plasma enhanced chemical vapor deposition method and used as positive electrode for vanadium redox flow battery (VRFB). The carbon fibers in CF are successfully wrapped by vertically grown graphene nanowalls, which not only increase the electrode specific area, but also expose a high density of sharp graphene edges with good catalytic activities to the vanadium ions. As a result, the VRFB with this novel electrode shows three times higher reaction rate toward VO2(+)/VO(2+) redox couple and 11% increased energy efficiency over VRFB with an unmodified CF electrode...
April 2016: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
Xin-Bing Cheng, Rui Zhang, Chen-Zi Zhao, Fei Wei, Ji-Guang Zhang, Qiang Zhang
Lithium metal batteries (LMBs) are among the most promising candidates of high-energy-density devices for advanced energy storage. However, the growth of dendrites greatly hinders the practical applications of LMBs in portable electronics and electric vehicles. Constructing stable and efficient solid electrolyte interphase (SEI) is among the most effective strategies to inhibit the dendrite growth and thus to achieve a superior cycling performance. In this review, the mechanisms of SEI formation and models of SEI structure are briefly summarized...
March 2016: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
Qidong Li, Qiulong Wei, Jinzhi Sheng, Mengyu Yan, Liang Zhou, Wen Luo, Ruimin Sun, Liqiang Mai
Despite the enormous efforts devoted to high-performance lithium-ion batteries (LIBs), the present state-of-the-art LIBs cannot meet the ever-increasing demands. With high theoretical capacity, fast ionic conductivity, and suitable charge/discharge plateaus, Li3VO4 shows great potential as the anode material for LIBs. However, it suffers from poor electronic conductivity. In this work, we present a novel composite material with mesoporous Li3VO4/C submicron-ellipsoids supported on rGO (LVO/C/rGO). The synthesized LVO/C/rGO exhibits a high reversible capacity (410 mAh g(-1) at 0...
December 2015: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
Xavier LeSaout, Matteo Costioli, Lynn Jordan, Jeremy Lambert, Ross Beighley, Laurel Provencher, Brian Gerwe, Kevin McGuire, Nico Verlinden, Andrew Barry
Small-scale protein purification presents opportunities for accelerated process development of biotherapeutic molecules. Miniaturization of purification conditions reduces time and allows for parallel processing of samples, thus offering increased statistical significance and greater breadth of variables. The ability of the miniaturized platform to be predictive of larger scale purification schemes is of critical importance. The PerkinElmer JANUS BioTx Pro and Pro-Plus workstations were developed as intuitive, flexible, and automated devices capable of performing parallel small-scale analytical protein purification...
March 2016: Engineering in Life Sciences
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