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https://www.readbyqxmd.com/read/29334481/flexible-and-freestanding-supercapacitor-based-on-nanostructured-poly-m-aminophenol-carbon-nanofiber-hybrid-mats-with-high-energy-and-power-densities
#1
Arup Choudhury, Baban Dey, Susanta Sinha Mahapatra, Doo-Won Kim, Kap-Seung Yang, Duck J Yang
Nanostructured poly(m-aminophenol) (PmAP) coated freestanding carbon nanofiber (CNF) mats were fabricated through simple in-situ rapid-mixing polymerization of m-aminophenol in presence of CNF mat for flexible solid-state supercapacitors. The surface compositions, morphology and pore structure of the hybrid mats were characterized by using different techniques, e.g., FTIR, Raman, XRD, FE-SEM, TEM and N2 absorption. The results show that the PmAP nanoparticles homogeneously deposited on CNF surfaces and formed a thin flexible hybrid mat, which were directly used to made electrodes for electrochemical analysis without using any binders and conductive additives...
January 15, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29334456/building-ion-conduction-highways-in-polymeric-electrolytes-by-manipulating-protein-configuration
#2
Xuewei Fu, Chunhui Li, Yu Wang, Lucas Paul Kovatch, Louis Scudiero, Jin Liu, Wei-Hong Zhong
Solid polymer electrolytes play a critical role in the development of safe, flexible and all-solid-state energy storage devices. However, the low ion-conductivity has been the primary challenge impeding them from practical applications. Here, we propose a new biotechnology to fabricate novel protein-ceramic hybrid nanofillers for simultaneously boosting the ionic conductivity, mechanical properties and even adhesion properties of solid polymer electrolytes. This hybrid nanofiller is fabricated by coating ion-conductive soy-proteins onto TiO2 nanoparticles via a controlled denaturation process in appropriate solvent and conditions...
January 15, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29334444/pregnancy-and-parenthood-during-medical-school
#3
Emma M Bye, Brody W Brisk, Suzanne D Reuter, Keith A Hansen, Mary D Nettleman
PURPOSE: The stress of pregnancy and parenthood during the intense educational experience of medical school could increase the risk of student burnout. Because 9.2 percent of U.S. medical students are parents by graduation, it would seem prudent to include this topic in wellness programs and policies. The purpose of this study was to determine the effects of pregnancy and parenthood on medical students. METHOD: This was a cross-sectional, internet survey distributed to all four classes of medical students at the University of South Dakota Sanford School of Medicine during the 2016-2017 academic year...
December 2017: South Dakota Medicine: the Journal of the South Dakota State Medical Association
https://www.readbyqxmd.com/read/29334292/safety-and-effectiveness-of-fascial-therapy-in-adult-patients-with-hemophilic-arthropathy-a-pilot-study
#4
Elena Donoso-Úbeda, Javier Meroño-Gallut, José Antonio López-Pina, Rubén Cuesta-Barriuso
BACKGROUND: The primary clinical manifestations of hemophilia are muscle and joint bleeding. Recurrent bleeding leads to a degenerative process known as hemophilic arthropathy. Fascial therapy is one of the most used physiotherapy techniques today to improve joint dysfunctions and chronic pain. OBJECTIVE: To assess the safety and efficacy of fascial therapy treatment in patients with hemophilic arthropathy of ankle and knee. DESIGN: Non-randomized, controlled clinical trial...
January 15, 2018: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/29334275/laparoscopic-ovarian-drilling-versus-gnrh-antagonist-combined-with-cabergoline-as-a-prophylaxis-against-the-re-development-of-ovarian-hyperstimulation-syndrome
#5
Emaduldin Seyam, Enas Hefzy
OBJECTIVE: The aim of this work was to investigate the value of laparoscopic ovarian drilling (LOD) compared with GnRH antagonist flexible protocol combined with cabergoline (Cb), as a prophylaxis against the re-development of ovarian hyperstimulation syndrome (OHSS) in women with clomiphene citrate-resistant polycystic ovary disease (CCR-PCOD) who had severe OHSS before in a previous ICSI cycle. STUDY DESIGN: It is a prospective controlled study, where 250 CCR-PCOD women (n = 250) with a history of severe OHSS before, had been recruited for the study...
January 15, 2018: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29334250/estimation-of-a-latent-variable-regression-growth-curve-model-for-individuals-cross-classified-by-clusters
#6
Audrey J Leroux, S Natasha Beretvas
The cross-classified multiple membership latent variable regression (CCMM-LVR) model is a recent extension to the three-level latent variable regression (HM3-LVR) model which can be utilized for longitudinal data that contains individuals who changed clusters over time (for instance, student mobility across schools). The HM3-LVR model can include the initial status on growth effect as varying across those clusters and allows testing of more flexible hypotheses about the influence of initial status on growth and of factors that might impact that relationship, but only in the presence of pure clustering of participants within higher-level units...
January 15, 2018: Multivariate Behavioral Research
https://www.readbyqxmd.com/read/29334188/soft-artificial-bladder-detrusor
#7
Xuxu Yang, Chengrui An, Shuting Liu, Tingyu Cheng, Varitsara Bunpetch, Yixiao Liu, Shurong Dong, Shijian Li, Xiaohui Zou, Tiefeng Li, Hongwei Ouyang, Zhaohui Wu, Wei Yang
Developing soft devices for invasive procedures bears great importance for human health. The softness and large strain actuation of responsive hydrogels promise the potential to fabricate soft devices, which can attach on and assist to the function of organs. The key challenges lie in the fabrication of soft devices with robust actuating ability and biocompatibility to the attached organ. This paper presents a solution that integrates the thermoresponsive hydrogel membrane with flexible electronics and silk scaffold into a balloon-like soft device...
January 15, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29334183/engineering-polymersomes-for-diagnostics-and-therapy
#8
REVIEW
Jiayu Leong, Jye Yng Teo, Vinay K Aakalu, Yi Yan Yang, Hyunjoon Kong
Engineered polymer vesicles, termed as polymersomes, confer a flexibility to control their structure, properties, and functionality. Self-assembly of amphiphilic copolymers leads to vesicles consisting of a hydrophobic bilayer membrane and hydrophilic core, each of which is loaded with a wide array of small and large molecules of interests. As such, polymersomes are increasingly being studied as carriers of imaging probes and therapeutic drugs. Effective delivery of polymersomes necessitates careful design of polymersomes...
January 15, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29334166/investigating-the-accessibility-of-nucleosome-by-duocarmycin-b2-fe-ii-peplomycin-and-mnase-using-capillary-electrophoresis
#9
Tingting Zou, Seiichiro Kizaki, Hiroshi Sugiyama
Capillary electrophoresis coupled with DNA 5 Texas Red labeling was used to investigate the ability of duocarmycin B2, Fe(II) peplomycin, and MNase to access the nucleosome. Distinct accessibility patterns of these species to the nucleosome were observed. Duocarmycin B2 was able to enter and react at the core region, although its alkylating efficiency decreased significantly. Intercalation of peplomycin in the nucleosomal core region was highly suppressed, but reaction sites located at the ends of the nucleosomal core remained accessible, which implied the flexibility of the core DNA end...
January 15, 2018: Chembiochem: a European Journal of Chemical Biology
https://www.readbyqxmd.com/read/29334150/a-general-method-for-the-chemical-synthesis-of-large-scale-seamless-transition-metal-dichalcogenide-electronics
#10
Li Li, Yichuan Guo, Yuping Sun, Long Yang, Liang Qin, Shouliang Guan, Jinfen Wang, Xiaohui Qiu, Hongbian Li, Yuanyuan Shang, Ying Fang
The capability to directly build atomically thin transition metal dichalcogenide (TMD) devices by chemical synthesis offers important opportunities to achieve large-scale electronics and optoelectronics with seamless interfaces. Here, a general approach for the chemical synthesis of a variety of TMD (e.g., MoS2 , WS2 , and MoSe2 ) device arrays over large areas is reported. During chemical vapor deposition, semiconducting TMD channels and metallic TMD/carbon nanotube (CNT) hybrid electrodes are simultaneously formed on CNT-patterned substrate, and then coalesce into seamless devices...
January 15, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29334148/self-powered-si-cds-flexible-photodetector-with-broadband-response-from-325-to-1550-nm-based-on-pyro-phototronic-effect-an-approach-for-photosensing-below-bandgap-energy
#11
Yejing Dai, Xingfu Wang, Wenbo Peng, Cheng Xu, Changsheng Wu, Kai Dong, Ruiyuan Liu, Zhong Lin Wang
Cadmium sulfide (CdS) has received widespread attention as the building block of optoelectronic devices due to its extraordinary optoelectronic properties, low work function, and excellent thermal and chemical stability. Here, a self-powered flexible photodetector (PD) based on p-Si/n-CdS nanowires heterostructure is fabricated. By introducing the pyro-phototronic effect derived from wurtzite structured CdS, the self-powered PD shows a broadband response range, even beyond the bandgap limitation, from UV (325 nm) to near infrared (1550 nm) under zero bias with fast response speed...
January 15, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29334127/non-enzymatic-cross-linking-of-collagen-type-ii-fibrils-is-tuned-via-osmolality-switch
#12
Behdad Pouran, Parisa R Moshtagh, Vahid Arbabi, Jessica Snabel, Reinout Stoop, Jeffrey Ruberti, Jos Malda, Amir A Zadpoor, Harrie Weinans
An important aspect in cartilage ageing is accumulation of advanced glycation end products (AGEs) after exposure to sugars. Advanced glycation results in crosslinks formation between the collagen fibrils in articular cartilage, hampering their flexibility and making cartilage more brittle. In the current study, we investigate whether collagen crosslinking after exposure to sugars depends on the stretching condition of the collagen fibrils. Healthy equine cartilage specimens were exposed to L-threose sugar and placed in hypo-, iso- or hyper-osmolal conditions that expanded or shrank the tissue and changed the 3D conformation of collagen fibrils...
January 15, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29334117/the-relationship-between-office-type-and-job-satisfaction-testing-a-multiple-mediation-model-through-ease-of-interaction-and-well-being
#13
Tobias Otterbring, Jörg Pareigis, Erik Wästlund, Alexander Makrygiannis, Anton Lindström
Objectives This cross-sectional study investigated the associations between office type (cellular, shared-room, small open-plan, and medium-sized open-plan) and employees' ease of interaction with coworkers, subjective well-being, and job satisfaction. Methods A brief survey including measures of office type, ease of interaction with coworkers, subjective well-being, and job satisfaction was sent electronically to 1500 Swedish real-estate agents, 271 of whom returned usable surveys. The data were analyzed using a regression-based serial multiple mediation model (PROCESS Model 6), which tested whether the relationship between office type and job satisfaction would be mediated by ease of interaction and, in turn, subjective well-being...
January 15, 2018: Scandinavian Journal of Work, Environment & Health
https://www.readbyqxmd.com/read/29334104/one-pot-cascade-synthesis-of-azabicycles-via-the-nitro-mannich-reaction-and-n-alkylation
#14
Wannaporn Disadee, Somsak Ruchirawat
A one-pot, metal-free process for the synthesis of azabicycles is developed. The key transformations involved a cascade of double intramolecular cyclizations via the nitro-Mannich reaction and N-alkylation, providing various ring systems of azabicycles in yields up to 81% and an isomeric ratio of 62 : 1. This approach offers considerable advantages in terms of the handling of small molecules, the flexibility to introduce a functionalized side chain, and gives direct access to various azabicycles.
January 15, 2018: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/29333938/structure-based-engineering-to-restore-high-affinity-binding-of-an-isoform-selective-anti-tgf%C3%AE-1-antibody
#15
Dana M Lord, Julie J Bird, Denise M Honey, Annie Best, Anna Park, Ronnie R Wei, Huawei Qiu
Metelimumab (CAT192) is a human IgG4 monoclonal antibody developed as a TGFβ1-specific antagonist. It was tested in clinical trials for the treatment of scleroderma but later terminated due to lack of efficacy. Subsequent characterization of CAT192 indicated that its TGFβ1 binding affinity was reduced by ∼50-fold upon conversion from the parental single-chain variable fragment (scFv) to IgG4. We hypothesized this result was due to decreased conformational flexibility of the IgG that could be altered via engineering...
January 15, 2018: MAbs
https://www.readbyqxmd.com/read/29333931/hyperspectral-imaging-of-tissue-perfusion-and-oxygenation-in-wounds-assessing-the-impact-of-a-micro-capillary-dressing
#16
Thomas Wild, Markus Becker, Jochen Winter, Nicole Schuhschenk, Georg Daeschlein, Frank Siemers
OBJECTIVE: Experimental tests of non-invasive multi- or hyperspectral imaging (HSI) systems reveal the high potential of support for medical diagnostic purposes and scientific biomedical analysis. Until now the use of HSI technologies for medical applications was limited by complex and overly sophisticated systems. We present a new and compact HSI-camera that could be used in normal clinical practice. METHOD: We assessed the use of the HSI system on the hands of 10 healthy volunteers, looking at control parameters, and those following venous occlusion, arterial occlusion and reperfusion, including tissue oxygenation, tissue haemoglobin index, perfusion in 4-6mm depth=near infrared spectroscopy (NIR), and tissue water index...
January 2, 2018: Journal of Wound Care
https://www.readbyqxmd.com/read/29333748/near-infrared-light-sensitive-polyvinyl-alcohol-hydrogel-photoresist-for-spatiotemporal-control-of-cell-instructive-3d-microenvironments
#17
Xiao-Hua Qin, Xiaopu Wang, Markus Rottmar, Bradley J Nelson, Katharina Maniura-Weber
Advanced hydrogel systems that allow precise control of cells and their 3D microenvironments are needed in tissue engineering, disease modeling, and drug screening. Multiphoton lithography (MPL) allows true 3D microfabrication of complex objects, but its biological application requires a cell-compatible hydrogel resist that is sufficiently photosensitive, cell-degradable, and permissive to support 3D cell growth. Here, an extremely photosensitive cell-responsive hydrogel composed of peptide-crosslinked polyvinyl alcohol (PVA) is designed to expand the biological applications of MPL...
January 15, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29333630/efficient-supercapacitor-energy-storage-using-conjugated-microporous-polymer-networks-synthesized-from-buchwald-hartwig-coupling
#18
Yaozu Liao, Haige Wang, Meifang Zhu, Arne Thomas
Supercapacitors have received increasing interest as energy storage devices due to their rapid charge-discharge rates, high power densities, and high durability. In this work, novel conjugated microporous polymer (CMP) networks are presented for supercapacitor energy storage, namely 3D polyaminoanthraquinone (PAQ) networks synthesized via Buchwald-Hartwig coupling between 2,6-diaminoanthraquinone and aryl bromides. PAQs exhibit surface areas up to 600 m2 g-1 , good dispersibility in polar solvents, and can be processed to flexible electrodes...
January 15, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29333588/nitrogen-fixation-activity-and-the-abundance-and-taxonomy-of-nifh-genes-in-agricultural-pristine-and-urban-prairie-stream-sediments-chronically-exposed-to-different-levels-of-nitrogen-loading
#19
Ingrid R Caton, Todd M Caton, Mark A Schneegurt
Small streams exert great influences on the retention and attenuation of nitrogen (N) within stream networks. Human land use can lead to increased transport of dissolved inorganic N compounds and downstream eutrophication. Microbial activity in streams is important for maintaining an actively functioning N cycle. Chronically high N loading in streams affects the rates of the central processes of the N cycle by increasing rates of nitrification and denitrification, with biota exhibiting decreased efficiency of N use...
January 15, 2018: Archives of Microbiology
https://www.readbyqxmd.com/read/29333530/transparent-flexible-active-faraday-cage-enables-in-vivo-capacitance-measurement-in-assembled-microsensor
#20
Mahdi Ahmadi, Rajesh Rajamani, Serdar Sezen
Capacitive micro-sensors such as accelerometers, gyroscopes and pressure sensors are increasingly used in the modern electronic world. However, the in vivo use of capacitive sensing for measurement of pressure or other variables inside a human body suffers from significant errors due to stray capacitance. This paper proposes a solution consisting of a transparent thin flexible Faraday cage that surrounds the sensor. By supplying the active sensing voltage simultaneously to the deformable electrode of the capacitive sensor and to the Faraday cage, the stray capacitance during in vivo measurements can be largely eliminated...
October 2017: IEEE Sensors Letters
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