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https://www.readbyqxmd.com/read/28632289/novel-anterior-plating-technique-for-patella-fracture-fixation
#1
Matthew P Siljander, Alexander D Vara, Denise M Koueiter, Brett P Wiater, Patrick J Wiater
Patella fracture fixation remains a significant challenge for orthopedic surgeons. Although tension band fixation allows for reliable osseous union, especially in simple fracture patterns, it still presents several problems. Plate fixation of patella fractures is a method that allows for more rigid stabilization and earlier mobilization. At the authors' level 1 trauma center, one fellowship-trained trauma surgeon has transitioned to using a novel anterior, low-profile mesh plate construct for all types of patella fractures...
June 20, 2017: Orthopedics
https://www.readbyqxmd.com/read/28632082/the-%C3%AE-helix-alignment-of-proteins-in-water-solution-toward-a-high-frequency-electromagnetic-field-a-ftir-spectroscopy-study
#2
Emanuele Calabrò, Salvatore Magazù
The aim of this article was to study the effects of mobile phone electromagnetic waves at 1750 MHz on the Amide I and Amide II vibration bands of some proteins in bidistilled water solution by means of Fourier transform infrared (FTIR) spectroscopy and Fourier self-deconvolution (FSD) analysis. The proteins that were used for the experiment were hemoglobin, myoglobin, bovine serum albumin and lysozyme. The exposure system consisted of microwaves emitted by an operational mobile phone at the frequency at 1750 MHz at the average power density of 1 W/m(2)...
June 20, 2017: Electromagnetic Biology and Medicine
https://www.readbyqxmd.com/read/28631485/suppression-of-magnetoresistance-in-thin-wte2-flakes-by-surface-oxidation
#3
John M Woods, Jie Shen, Piranavan Kumaravadivel, Yuan Pang, Yujun Xie, Grace A Pan, Min Li, Eric I Altman, Li Lu, Judy J Cha
Recent renewed interest in layered transition metal dichalcogenides stems from the exotic electronic phases predicted and observed in the single- and few-layer limit. Realizing these electronic phases requires preserving the desired transport properties down to a monolayer, which is challenging. Surface oxides are known to impart Fermi level pinning or degrade the mobility on a number of different systems, including transition metal dichalcogenides and black phosphorus. Semimetallic WTe2 exhibits large magnetoresistance due to electron-hole compensation, thus Fermi level pinning in thin WTe2 flakes could break the electron-hole balance and suppress the large magnetoresistance...
June 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28628029/thermopower-and-thermal-conductivity-in-the-weyl-semimetal-nbp
#4
Ulrike Stockert, Ricardo Donizeth Dos Reis, M O Ajeesh, Sarah J Watzman, Marcus Schmidt, Chandra Shekhar, Joseph P Heremans, Claudia Felser, Michael Baenitz, Michael Nicklas
The Weyl semimetal NbP exhibits an extremely large magnetoresistance (MR) and an ultra-high mobility. The large MR originates from a combination of the nearly perfect compensation between electron- and hole-type charge carriers and the high mobility, which is relevant to the topological band structure. In this work we report on temperature- and field-dependent thermopower and thermal conductivity experiments on NbP. Additionally, we carried out complementary heat capacity, magnetization, and electrical resistivity measurements...
June 19, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28626881/direct-growth-of-high-mobility-and-low-noise-lateral-mos2-graphene-heterostructure-electronics
#5
Amirhossein Behranginia, Poya Yasaei, Arnab K Majee, Vinod K Sangwan, Fei Long, Cameron J Foss, Tara Foroozan, Shadi Fuladi, Mohammad Reza Hantehzadeh, Reza Shahbazian-Yassar, Mark C Hersam, Zlatan Aksamija, Amin Salehi-Khojin
Reliable fabrication of lateral interfaces between conducting and semiconducting 2D materials is considered a major technological advancement for the next generation of highly packed all-2D electronic circuitry. This study employs seed-free consecutive chemical vapor deposition processes to synthesize high-quality lateral MoS2 -graphene heterostructures and comprehensively investigated their electronic properties through a combination of various experimental techniques and theoretical modeling. These results show that the MoS2 -graphene devices exhibit an order of magnitude higher mobility and lower noise metrics compared to conventional MoS2 -metal devices as a result of energy band rearrangement and smaller Schottky barrier height at the contacts...
June 19, 2017: Small
https://www.readbyqxmd.com/read/28626789/dataset-on-the-electronic-and-thermal-transport-properties-of-quaternary-compounds-of-pbte-0-95-x-pbse-x-pbs-0-05
#6
Dianta Ginting, Chan-Chieh Lin, Lydia Rathnam, Junpil Hwang, Woochul Kim, Rabih Al Rahal Al Orabi, Jong-Soo Rhyee
The data presented in this article are related to the research article entitled "High thermoelectric performance in pseudo quaternary compounds of (PbTe)0.95-x (PbSe)x(PbS)0.05 by simultaneous band convergence and nano precipitation" (Ginting et al., 2017) [1]. We measured electrical and thermal transport properties such as temperature-dependent Hall carrier density nH , Hall mobility μH , thermal diffusivity D, heat capacity Cp , and power factor S(2)σ in (PbTe)0.95-x (PbSe)x(PbS)0.05 (x=0.0, 0.05, 0.10, 0...
August 2017: Data in Brief
https://www.readbyqxmd.com/read/28613825/uv-sintered-low-temperature-solution-processed-sno2-as-robust-electron-transport-layer-for-efficient-planar-heterojunction-perovskite-solar-cells
#7
Like Huang, Xiaoxiang Sun, Chang Li, Jie Xu, Rui Xu, Yangyang Du, Jian Ni, Hongkun Cai, Juan Li, Ziyang Hu, Jianjun Zhang
Recently, low-temperature solution-processed tin oxide (SnO2) as versatile electron transport layer (ETL) for efficient and robust planar heterojunction (PH) perovskite solar cells (PSCs) has attracted particular attention due to its outstanding properties such as high optical transparency, high electron mobility, and suitable band alignment. However, for most of the reported works, an annealing temperature of 180 °C is generally required. This temperature can reluctantly said to be a low temperature, especially with respect to the flexible application where 180 °C is still a little too high that PET flexible substrate cannot bear...
June 14, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28611596/ethidium-bromide-modifies-the-agarose-electrophoretic-mobility-of-cag%C3%A2-ctg-alternative-dna-structures-generated-by-pcr
#8
Mário Gomes-Pereira, Darren G Monckton
The abnormal expansion of unstable simple sequence DNA repeats can cause human disease through a variety of mechanisms, including gene loss-of-function, toxic gain-of-function of the encoded protein and toxicity of the repeat-containing RNA transcript. Disease-associated unstable DNA repeats display unusual biophysical properties, including the ability to adopt non-B-DNA structures. CAG•CTG trinucleotide sequences, in particular, have been most extensively studied and they can fold into slipped-stranded DNA structures, which have been proposed as mutation intermediates in repeat size expansion...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28610798/ideal-versus-real-automated-twin-column-recycling-chromatography-process
#9
Fabrice Gritti, Mike Leal, Thomas McDonald, Martin Gilar
The full baseline separation of two compounds (selectivity factors α<1.03) is either impractical (too long analysis times) or even impossible when using a single column of any length given the pressure limitations of current LC instruments. The maximum efficiency is that of an infinitely long column operated at infinitely small flow rates. It is determined by the maximum allowable system pressure, the column permeability (particle size), the viscosity of the eluent, and the intensity of the effective diffusivity of the analytes along the column...
June 10, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28608673/organic-donor-acceptor-complexes-as-novel-organic-semiconductors
#10
Jing Zhang, Wei Xu, Peng Sheng, Guangyao Zhao, Daoben Zhu
Organic donor-acceptor (DA) complexes have attracted wide attention in recent decades, resulting in the rapid development of organic binary system electronics. The design and synthesis of organic DA complexes with a variety of component structures have mainly focused on metallicity (or even superconductivity), emission, or ferroelectricity studies. Further efforts have been made in high-performance electronic investigations. The chemical versatility of organic semiconductors provides DA complexes with a great number of possibilities for semiconducting applications...
June 13, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28608220/calpain-zymography-general-methodology-and-protocol
#11
Kevin K W Wang
Casein zymography has become one of the gold standard assays for monitoring mammalian calcium-activated proteases (calpains) in purified enzyme, cell, or tissue samples. This calpain zymography method takes advantages of (1) casein is an excellent substrate for major isoforms of calpains (Calpain-1, 2 and 3), (2) the embedded casein is digested into small peptides where the calpain bands are located, thus creating a clear zone upon Commassie blue gel staining, and (3) the calpain isoforms have different gel mobility under native gel conditions...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28608197/cysteine-protease-zymography-brief-review
#12
Jeff Wilkesman
Cysteine proteases play multiple roles in basically all aspects of physiology and development. In plants, they are involved in growth and development and in accumulation and mobilization of storage proteins. Furthermore, they are engaged in signalling pathways and in the response to biotic and abiotic stresses. In animals and also in humans, they are responsible for senescence and apoptosis, prohormone processing, and ECM remodelling. When analyzed by zymography, the enzyme must be renaturated after SDS-PAGE...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28608150/-arthroscopy-of-the-proximal-interphalangeal-joint
#13
N Borisch
OBJECTIVE: Pain reduction in the affected proximal interphalangeal joint (PIP joint) by synovectomy, loose body extraction, dorsal arthrolysis. INDICATIONS: Therapy-resistant synovitis in rheumatoid arthritis (RA), early stage primary and secondary degenerative arthritis, loose bodies, capsular contracture. CONTRAINDICATIONS: Established biomechanic changes in RA (boutonniere and swanneck deformity). Large dorsal synovial cysts. Advanced radiologic changes in degenerative arthritis...
June 12, 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/28604363/quantum-confinement-in-black-phosphorus-based-nanostructures
#14
Andrew Cupo, Vincent Meunier
The modification of an idealized infinite bulk system by dimensional reduction or structural distortion results in quantum confinement effects (QCEs). For example, dimensional reduction of a black phosphorus structure leads to the realization of few-layer systems, creation of edges and surfaces, nanoribbons, quantum dots, and antidot lattices while structural distortion involves simple bending (including nanotubes) and rippling. Black phosphorus ('phosphorene' in the single-layer limit) has been of recent interest due to its relatively large charge carrier mobility and moderate semiconducting band gap, which remains direct irrespective of the number of layers...
July 19, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28603968/ambipolar-mos2-transistors-by-nanoscale-tailoring-of-schottky-barrier-using-oxygen-plasma-functionalization
#15
Filippo Giannazzo, Gabriele Fisichella, Giuseppe Greco, Salvatore Di Franco, Ioannis Deretzis, Antonino La Magna, Corrado Bongiorno, Giuseppe Nicotra, Corrado Spinella, Michelangelo Scopelliti, Bruno Pignataro, Simonpietro Agnello, Fabrizio Roccaforte
One of the main challenges to exploit molybdenum disulfide (MoS2) potentialities for the next generation complementary-metal-oxide-semiconductor (CMOS) technology is the realization of p-type or ambipolar field effect transistors (FETs). Hole transport in MoS2 FETs is typically hampered by the high Schottky barrier height (SBH) for holes at source/drain contacts, due to the Fermi level pinning close to the conduction band. In this work, we show that the SBH of multilayer MoS2 surface can be tailored at nanoscale using soft O2 plasma treatments...
June 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28603957/the-impact-of-nanomorphology-on-the-photochemistry-of-fullerene-films-correlating-stability-to-triplet-exciton-kinetics
#16
Emily M Speller, James D McGettrick, Beth Rice, Andrew M Telford, Harrison K H Lee, Ching-Hong Tan, Catherine S De Castro, Matthew Lloyd Davies, Trystan M Watson, Jenny Nelson, James R Durrant, Zhe Li, Wing Chung Tsoi
The photochemistry and stability of fullerene films is found to be strongly dependent upon film nanomorphology. In particular, PC61BM blend films, dispersed with polystyrene, are found to be more susceptible to photobleaching in air than the more aggregated neat films. This enhanced photobleaching correlated with increased oxygen quenching of PC61BM triplet states, and the appearance of a carbonyl FTIR absorption band indicative of fullerene oxidation. sug-gesting PC61BM photo-oxidation is primarily due to triplet-mediated singlet oxygen generation...
June 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28598171/exotic-physics-and-chemistry-of-two-dimensional-phosphorus-phosphorene
#17
Chandra Chowdhury, Ayan Datta
Phosphorene, the monolayer form of black phosphorus, is the most recent addition to graphene-like van der Waals two-dimensional (2D) systems. Due to its several interesting properties, namely its tunable direct band gap, high carrier mobility, and unique in-plane anisotropy, it has emerged as a promising candidate for electronic and optoelectronic devices. Phosphorene (Pn) reveals a much richer phase diagram than graphene, and it comprises the two forms namely the stapler-clip like (black Pn, α form) and chairlike (blue Pn, β form) structures...
June 14, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28597660/monolayer-bismuthene-metal-contacts-a-theoretical-study
#18
Ying Guo, Feng Pan, Meng Ye, Xiaotian Sun, Yangyang Wang, Jingzhen Li, Xiuying Zhang, Han Zhang, Yuanyuan Pan, Zhigang Song, Jinbo Yang, Jing Lu
Bismuthene, a bismuth analogue of graphene, has a moderate band gap, high carrier mobility, topological nontriviality, high stability at room temperature, and easy transferability, and is very attractive for electronics, optronics, and spintronics. The electrical contact plays a critical role in an actual device. The interfacial properties of monolayer (ML) bismuthene in contact with the metal electrodes spanning a wide work function range in a field effect transistor configuration are systematically studied for the first time by using both first-principles electronic structure calculations and quantum transport simulations...
June 9, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28596233/adaptable-interaction-between-aquaporin-1-and-band-3-reveals-a-potential-role-of-water-channel-in-blood-co2-transport
#19
Kate Hsu, Ting-Ying Lee, Ammasi Periasamy, Fu-Jen Kao, Li-Tzu Li, Chuang-Yu Lin, Hui-Ju Lin, Marie Lin
Human CO2 respiration requires rapid conversion between CO2 and HCO3(-) Carbonic anhydrase II facilitates this reversible reaction inside red blood cells, and band 3 [anion exchange (AE)-1] provides a passage for HCO3(-) flux across the cell membrane. These 2 proteins are core components of the CO2 transport metabolon. Intracellular H2O is necessary for CO2/HCO3(-) conversion. However, abundantly expressed aquaporin (AQP)-1 in erythrocytes is thought not to be part of band 3 complexes or the CO2 transport metabolon...
June 8, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28592282/the-role-of-virtual-reality-in-improving-motor-performance-as-revealed-by-eeg-a-randomized-clinical-trial
#20
Rocco Salvatore Calabrò, Antonino Naro, Margherita Russo, Antonino Leo, Rosaria De Luca, Tina Balletta, Antonio Buda, Gianluca La Rosa, Alessia Bramanti, Placido Bramanti
BACKGROUND: Many studies have demonstrated the usefulness of repetitive task practice by using robotic-assisted gait training (RAGT) devices, including Lokomat, for the treatment of lower limb paresis. Virtual reality (VR) has proved to be a valuable tool to improve neurorehabilitation training. The aim of our pilot randomized clinical trial was to understand the neurophysiological basis of motor function recovery induced by the association between RAGT (by using Lokomat device) and VR (an animated avatar in a 2D VR) by studying electroencephalographic (EEG) oscillations...
June 7, 2017: Journal of Neuroengineering and Rehabilitation
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