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https://www.readbyqxmd.com/read/29346719/a-tunable-molten-salt-route-for-scalable-synthesis-of-ultrathin-amorphous-carbon-nanosheets-as-high-performance-anode-materials-for-lithium-ion-batteries
#1
Yixian Wang, Wei Tian, Luhai Wang, Haoran Zhang, Jialiang Liu, Tingyue Peng, Lei Pan, Xiaobo Wang, Mingbo Wu
Amorphous carbon is regarded as a promising alternative to commercial graphite as the lithium-ion battery anode due to its capability to reversibly store more lithium ions. However, the structural disorder with a large number of defects can lead to low electrical conductivity of the amorphous carbon, thus limiting its application for high power output. Herein, ultrathin amorphous carbon nanosheets were prepared from petroleum asphalt through tuning the carbonization temperature in a molten-salt medium. The amorphous nanostructure with expanded carbon interlayer spacing can provide substantial active sites for lithium storage while the two-dimensional (2D) morphology can facilitate fast electrical conductivity...
January 18, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29346275/a-review-on-recent-advances-in-stabilizing-peptides-proteins-upon-fabrication-in-hydrogels-from-biodegradable-polymers
#2
REVIEW
Faisal Raza, Hajra Zafar, Ying Zhu, Yuan Ren, Aftab -Ullah, Asif Ullah Khan, Xinyi He, Han Han, Md Aquib, Kofi Oti Boakye-Yiadom, Liang Ge
Hydrogels evolved as an outstanding carrier material for local and controlled drug delivery that tend to overcome the shortcomings of old conventional dosage forms for small drugs (NSAIDS) and large peptides and proteins. The aqueous swellable and crosslinked polymeric network structure of hydrogels is composed of various natural, synthetic and semisynthetic biodegradable polymers. Hydrogels have remarkable properties of functionality, reversibility, sterilizability, and biocompatibility. All these dynamic properties of hydrogels have increased the interest in their use as a carrier for peptides and proteins to be released slowly in a sustained manner...
January 18, 2018: Pharmaceutics
https://www.readbyqxmd.com/read/29344589/magnetism-tuning-strategies-for-graphene-oxide-based-on-magnetic-oligoacene-oxide-patches-model
#3
Yanjie Wen, Chia-Liang Yen, Linyin Yan, Hirohiko Kono, Sheng-Hsien Lin, Yong-Chien Ling
Graphene oxide (GO) has wide application potential owing to its 2D structure and diverse modification sites for various targeted uses. The introduction of magnetism into GO structures has further advanced the controllability of the application of GO materials. Herein, the concept of modular design and modeling was applied to tune the magnetism of GO. To obtain desirable magnetic properties, diradical-structured GO patches were formed by the introduction of two functional groups to break the Kekule structure of the benzene ring...
January 18, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29343864/electrochemical-and-friction-characteristics-of-metallic-glass-composites-at-the-microstructural-length-scales
#4
Aditya Ayyagari, Vahid Hasannaeimi, Harpreet Arora, Sundeep Mukherjee
Metallic glass composites represent a unique alloy design strategy comprising of in situ crystalline dendrites in an amorphous matrix to achieve damage tolerance unseen in conventional structural materials. They are promising for a range of advanced applications including spacecraft gears, high-performance sporting goods and bio-implants, all of which demand high surface degradation resistance. Here, we evaluated the phase-specific electrochemical and friction characteristics of a Zr-based metallic glass composite, Zr56...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29343412/implementing-genome-driven-personalized-cardiology-in-clinical-practice
#5
REVIEW
Ares Pasipoularides
Genomics designates the coordinated investigation of a large number of genes in the context of a biological process or disease. It may be long before we attain comprehensive understanding of the genomics of common complex cardiovascular diseases (CVDs) such as inherited cardiomyopathies, valvular diseases, primary arrhythmogenic conditions, congenital heart syndromes, hypercholesterolemia and atherosclerotic heart disease, hypertensive syndromes, and heart failure with preserved/reduced ejection fraction. Nonetheless, as genomics is evolving rapidly, it is constructive to survey now pertinent concepts and breakthroughs...
January 14, 2018: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/29342082/lewis-pair-catalysts-in-the-polymerization-of-lactide-and-related-cyclic-esters
#6
REVIEW
Xinlei Li, Changjuan Chen, Jincai Wu
Polyesters, especially poly(lactide) (PLA), are used widely as biodegradable and biocompatible materials, yet their controllable synthesis, especially the stereoselective synthesis of polyesters, is still a challenge. Recently some excellent Lewis pair catalysts for ring-opening polymerization (ROP) of lactide and related cyclic esters have emerged. This review article will highlight the key advances in the ROP catalyzed by Lewis pair compounds with the aim of encouraging the wider application of Lewis pair catalysts in the polymerization of lactide and related cyclic esters...
January 17, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29342043/the-american-otological-society-at-its-sesquicentennial-insights-into-the-society-s-formative-years
#7
Robert K Jackler, Jennifer C Alyono, Albert C Mudry
OBJECTIVE: To elucidate the sequence of events which led to the formation of the American Otological Society (AOS) in 1868 and to examine the lives and contributions of the nine founding members of the Society. METHODS: Study of primary historical documents, biographical material, and previous histories of the AOS. RESULTS: Earlier treatments of the history of the AOS minimally covered the events and personalities from the Society's formative period...
January 16, 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29341816/red-cell-indexes-made-easy-using-an-interactive-animation-do-students-and-their-scores-concur
#8
Upasana Kachroo, Elizabeth Vinod, Sivakumar Balasubramanian, Jesi W, Neetu Prince
A good understanding of red cell indexes can aid medical students in a considerable manner, serving as a basis to unravel both concepts in red cell physiology and abnormalities associated with the same. In this study, we tried to assess whether an interactive animation was helpful in improving student comprehension and understanding of red cell indexes compared with conventional classroom teaching. Eighty-eight first-year MBBS students participated, of which 44 were assigned to group A and 44 were assigned to group B after randomization...
March 1, 2018: Advances in Physiology Education
https://www.readbyqxmd.com/read/29341330/real-time-and-high-resolution-bioimaging-with-bright-aggregation-induced-emission-dots-in-short-wave-infrared-region
#9
Ji Qi, Chaowei Sun, Abudureheman Zebibula, Hequn Zhang, Ryan T K Kwok, Xinyuan Zhao, Wang Xi, Jacky W Y Lam, Jun Qian, Ben Zhong Tang
Fluorescence imaging in the spectral region beyond the conventional near-infrared biological window (700-900 nm) can theoretically afford high resolution and deep tissue penetration. Although some efforts have been devoted to developing a short-wave infrared (SWIR; 900-1700 nm) imaging modality in the past decade, long-wavelength biomedical imaging is still suboptimal owing to the unsatisfactory materials properties of SWIR fluorophores. Taking advantage of organic dots based on an aggregation-induced emission luminogen (AIEgen), herein microscopic vasculature imaging of brain and tumor is reported in living mice in the SWIR spectral region...
January 17, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29341307/chemical-and-enzymatic-strategies-for-bacterial-and-mammalian-cell-surface-engineering
#10
Xiaobao Bi, Juan Yin, Ashley Chen Guanbang, Chuan-Fa Liu
Cell surface serves important functions such as the regulation of cell-cell and cell-environment interactions. The understanding and manipulation of the cell surface is important for a wide range of fundamental studies of cellular behavior and for biotechnological and medical applications. With the rapid advance of biology, chemistry and materials science, many strategies have been developed for the functionalization of bacterial and mammalian cell surfaces. Here, we review the recent development of chemical and enzymatic approaches to cell surface engineering with particular emphasis on discussing the advantages and limitations of each of these strategies...
January 17, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29341288/lipid-and-nucleic-acid-chemistries-combining-the-best-of-both-worlds-to-construct-advanced-biomaterials
#11
REVIEW
Julie Baillet, Valérie Desvergnes, Aladin Hamoud, Laurent Latxague, Philippe Barthélémy
Hybrid synthetic amphiphilic biomolecules are emerging as promising supramolecular materials for biomedical and technological applications. Herein, recent progress in the field of nucleic acid based lipids is highlighted with an emphasis on their molecular design, synthesis, supramolecular properties, physicochemical behaviors, and applications in the field of health science and technology. In the first section, the design and the study of nucleolipids are in focus and then the glyconucleolipid family is discussed...
January 17, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29339932/computerized-versus-hand-scored-health-literacy-tools-a-comparison-of-simple-measure-of-gobbledygook-smog-and-flesch-kincaid-in-printed-patient-education-materials
#12
Kelsey Leonard Grabeel, Jennifer Russomanno, Sandy Oelschlegel, Emily Tester, Robert Eric Heidel
Objective: The research compared and contrasted hand-scoring and computerized methods of evaluating the grade level of patient education materials that are distributed at an academic medical center in east Tennessee and sought to determine if these materials adhered to the American Medical Association's (AMA's) recommended reading level of sixth grade. Methods: Librarians at an academic medical center located in the heart of Appalachian Tennessee initiated the assessment of 150 of the most used printed patient education materials...
January 2018: Journal of the Medical Library Association: JMLA
https://www.readbyqxmd.com/read/29339554/synthetic-biology-strategies-for-improving-microbial-synthesis-of-green-biopolymers
#13
Lisa A Anderson, M Ahsanul Islam, Kristala L J Prather
Polysaccharide-based biopolymers have many material properties relevant to industrial and medical uses, including as drug delivery agents, wound healing adhesives, and food additives and stabilizers. Traditionally, polysaccharides are obtained from natural sources. Microbial synthesis offers an attractive alternative for sustainable production of tailored biopolymers. Here, we review synthetic biology strategies for select "green" biopolymers: cellulose, alginate, chitin, chitosan, and hyaluronan. Microbial production pathways, opportunities for pathway yield improvements, and advances in microbial engineering of biopolymers in various hosts are discussed...
January 16, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29339475/electron-mean-free-path-filtering-in-dirac-material-for-improved-thermoelectric-performance
#14
Te-Huan Liu, Jiawei Zhou, Mingda Li, Zhiwei Ding, Qichen Song, Bolin Liao, Liang Fu, Gang Chen
Recent advancements in thermoelectric materials have largely benefited from various approaches, including band engineering and defect optimization, among which the nanostructuring technique presents a promising way to improve the thermoelectric figure of merit (zT) by means of reducing the characteristic length of the nanostructure, which relies on the belief that phonons' mean free paths (MFPs) are typically much longer than electrons'. Pushing the nanostructure sizes down to the length scale dictated by electron MFPs, however, has hitherto been overlooked as it inevitably sacrifices electrical conduction...
January 16, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29338353/developing-a-tailored-website-for-promoting-awareness-about-obstructive-sleep-apnea-osa-among-blacks-in-community-based-settings
#15
Rebecca Robbins, Yalini Senathirajah, Natasha J Williams, Carly Hutchinson, David M Rapoport, John P Allegrante, Alwyn Cohall, April Rogers, Olugbenga Ogedegbe, Girardin Jean-Louis
Blacks are at greater risk for lower sleep quality and higher risk for obstructive sleep apnea (OSA) than other racial groups. In this study, we summarize the development of a tailored website including visuals, key messages, and video narratives, to promote awareness about sleep apnea among community-dwelling blacks. We utilized mixed methods, including in-depth interviews, usability-testing procedures, and brief surveys (n = 9, 55% female, 100% black, average age 38.5 years). Themes from the qualitative analysis illuminated varied knowledge regarding OSA symptoms and prevalent self-reported experience with sleep disturbance and OSA symptoms (e...
January 17, 2018: Health Communication
https://www.readbyqxmd.com/read/29338165/how-ligands-affect-resistive-switching-in-solution-processed-hfo2-nanoparticle-assemblies
#16
Jiaying Wang, Satyan Choudhary, Jonathan De Roo, Katrien De Keukeleere, Isabel Van Driessche, Alfred J Crosby, Stephen S Nonnenmann
Advancement of resistive random access memory (ReRAM) requires fully understanding the various complex, defect-mediated transport mechanisms to further improve performance. While thin film oxide materials have been extensively studied, the switching properties of nanoparticle assemblies remain underexplored due to difficulties in fabricating ordered structures. Here we employ a simple flow coating method for the facile deposition of highly ordered HfO2 nanoparticle nanoribbon assemblies. The resistive switching character of nanoribbons was determined to correlate directly with the organic capping layer length of their constituting HfO2 nanoparticles, using oleic acid, dodecanoic acid, and undecenoic acid as model nanoparticle ligands...
January 17, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29337887/the-use-of-municipal-solid-waste-incineration-ash-in-various-building-materials-a-belgian-point-of-view
#17
REVIEW
Aneeta Mary Joseph, Ruben Snellings, Philip Van den Heede, Stijn Matthys, Nele De Belie
Huge amounts of waste are being generated, and even though the incineration process reduces the mass and volume of waste to a large extent, massive amounts of residues still remain. On average, out of 1.3 billion tons of municipal solid wastes generated per year, around 130 and 2.1 million tons are incinerated in the world and in Belgium, respectively. Around 400 kT of bottom ash residues are generated in Flanders, out of which only 102 kT are utilized here, and the rest is exported or landfilled due to non-conformity to environmental regulations...
January 16, 2018: Materials
https://www.readbyqxmd.com/read/29337380/recent-advances-in-micro-nanostructured-metal-organic-frameworks-towards-photonic-and-electronic-applications
#18
REVIEW
Xiaogang Yang, Xianqing Lin, Yong Sheng Zhao, Dongpeng Yan
Micro- and nanometer-sized metal-organic frameworks (MOFs) materials have attracted great attention due to their unique properties and various potential applications in photonics, electronics, high-density storage, chemo-, and biosensors. The study of these materials supplies insight into how the crystal structure, molecular components, and micro-/nanoscale effects can influence the performance of inorganic-organic hybrid materials. In this Minireview article, we introduce recent breakthroughs in the controlled synthesis of MOF micro-/nanomaterials with specific structures and compositions, the tunable photonic and electronic properties of which would provide a novel platform for multifunctional applications...
January 16, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29336151/ultra-robust-biochips-with-metal-organic-framework-coating-for-point-of-care-diagnosis
#19
Congzhou Wang, Lu Wang, Sirimuvva Tadepalli, Jeremiah J Morrissey, Evan D Kharasch, Rajesh R Naik, Srikanth Singamaneni
Most biosensors relying on antibodies as recognition elements fail in harsh environment conditions such as elevated temperatures, organic solvents or proteases because of antibody denaturation, and require strict storage conditions with defined shelf-life, thus limiting their applications in point-of-care and resource-limited settings. Here, a metal-organic framework (MOF) encapsulation is utilized to preserve the biofunctionality of antibodies conjugated to nanotransducers. This study investigates several parameters of MOF coating (including growth time, surface morphology, thickness and precursor concentrations) that determine the preservation efficacy against different protein denaturing conditions in both dry and wet environments...
January 16, 2018: ACS Sensors
https://www.readbyqxmd.com/read/29335696/structurally-and-electronically-modulated-spin-interaction-of-transient-biradicals-in-two-photon-gated-stepwise-photochromism
#20
Izumi Yonekawa, Katsuya Mutoh, Yoichi Kobayashi, Jiro Abe
The development of two-photon induced photochromic compounds is important for advanced photoresponsive materials. The utilization of the long-lived transient states or species for two-photon absorption is one of the efficient strategies to realize the advanced photochemical behavior beyond a one-photon photochemical reaction. We have synthesized bi-photochromic compounds composed of two photochromic phenoxyl-imidazolyl radical complex units. The biphotochromic compounds generate two biradical units when the two photochromic units absorb photons with a stepwise manner...
January 16, 2018: Photochemical & Photobiological Sciences
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