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https://www.readbyqxmd.com/read/29334150/a-general-method-for-the-chemical-synthesis-of-large-scale-seamless-transition-metal-dichalcogenide-electronics
#1
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/29334100/first-principles-simulation-of-local-response-in-transition-metal-dichalcogenides-under-electron-irradiation
#2
Anthony Yoshimura, Michael Lamparski, Neerav Kharche, Vincent Meunier
Electron beam irradiation by transmission electron microscopy (TEM) is a common and effective method for post-synthesis defect engineering in two-dimensional transition metal dichalcogenides (TMDs). Combining density functional theory (DFT) with relativistic scattering theory, we simulate the generation of such defects in monolayer group-VI TMDs, MoS2, WS2, MoSe2, and WSe2, focusing on two fundamental TEM-induced atomic displacement processes: chalcogen sputtering and chalcogen vacancy migration. Our calculations show that the activation energies of chalcogen sputtering depend primarily on the chalcogen species, and are smaller in selenides than in sulfides...
January 15, 2018: Nanoscale
https://www.readbyqxmd.com/read/29333655/preparation-of-high-percentage-1t-phase-transition-metal-dichalcogenide-nanodots-for-electrochemical-hydrogen-evolution
#3
Chaoliang Tan, Zhimin Luo, Apoorva Chaturvedi, Yongqing Cai, Yonghua Du, Yue Gong, Ying Huang, Zhuangchai Lai, Xiao Zhang, Lirong Zheng, Xiaoying Qi, Min Hao Goh, Jie Wang, Shikui Han, Xue-Jun Wu, Lin Gu, Christian Kloc, Hua Zhang
Nanostructured transition metal dichalcogenides (TMDs) are proven to be efficient and robust earth-abundant electrocatalysts to potentially replace precious platinum-based catalysts for the hydrogen evolution reaction (HER). However, the catalytic efficiency of reported TMD catalysts is still limited by their low-density active sites, low conductivity, and/or uncleaned surface. Herein, a general and facile method is reported for high-yield, large-scale production of water-dispersed, ultrasmall-sized, high-percentage 1T-phase, single-layer TMD nanodots with high-density active edge sites and clean surface, including MoS2 , WS2 , MoSe2 , Mo0...
January 15, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29333370/the-efficacy-of-oral-habit-modification-on-headache
#4
Farzaneh Agha-Hosseini, Nafiseh Sheykhbahaei, Iraj Mirzaii-Dizgah, Farzad Fatehi
Objectives: Headache is the most common complaint of patients suffering from temporomandibular joint disorders (TMDs). Thus, temporomandibular joint (TMJ) examinations maybe necessary in patients with headache. Considering the high prevalence of bruxism and TMDs in patients with headache the effects of conservative TMD treatment on headache should be assessed. Materials and Methods: Patients were questioned about headaches in the past three months. Those responding affirmatively to this question were examined for TMD and bruxism...
December 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/29333365/association-between-headache-and-temporomandibular-disorder
#5
REVIEW
Amira Mokhtar Abouelhuda, Hyun-Seok Kim, Sang-Yun Kim, Young-Kyun Kim
Headaches are one of the most common conditions associated with temporomandibular disorder (TMD). In the present paper, we evaluated the relationship between headache and TMD, determined whether headache influences the symptoms of TMD, and reported two cases of TMD accompanied by headache. Our practical experience and a review of the literature suggested that headache increases the frequency and intensity of pain parameters, thus complicating dysfunctional diseases in both diagnostic and treatment phases. Therefore, early and multidisciplinary treatment of TMD is necessary to avoid the overlap of painful events that could result in pain chronicity...
December 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/29332419/adolescent-stress-treatment-study-a-cluster-randomized-trial
#6
Stephanie Lynch, Conni DeBlieck, Linda C Summers, Anita Reinhardt, Wanda Borges
High school students experience a variety of stressors. Mental health issues are critical to their health. The "Adolescent Stress Treatment (AST) Study: A Cluster Randomized Trial" compared the efficacy of two stress reduction devices, the EnergyPod™ and the SleepWing™. The EnergyPod™ is a device that provides a semiprivate acoustical and visual environment for rest, stress reduction, and sleep. The SleepWing™ is a smaller device offering similar benefits. High school students were offered the opportunity to participate in the AST study when they exhibited signs of agitation...
January 1, 2018: Clinical Nursing Research
https://www.readbyqxmd.com/read/29331420/dacomitinib-antagonizes-multidrug-resistance-mdr-in-cancer-cells-by-inhibiting-the-efflux-activity-of-abcb1-and-abcg2-transporters
#7
Ying-Fang Fan, Wei Zhang, Leli Zeng, Zi-Ning Lei, Chao-Yun Cai, Pranav Gupta, Dong-Hua Yang, Qingbin Cui, Zuo-Dong Qin, Zhe-Sheng Chen, Louis D Trombetta
The development of multidrug resistance (MDR) to chemotherapy remains a major challenge in the treatment of cancer. Numerous mechanisms have been recognized that cause MDR, but one of the most important mechanisms is overexpression of adenosine triphosphate (ATP)-binding cassette (ABC) transporters, through which the efflux of various anticancer drugs against their concentration gradients is powered by ATP. In recent years, small molecular tyrosine kinase inhibitors (TKIs) have been developed for treatment in various human cancers overexpressing epidermal growth factor receptor (EGFR)...
January 10, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29330069/conformation-and-trimer-association-of-the-transmembrane-domain-of-the-parainfluenza-virus-fusion-protein-in-lipid-bilayers-from-solid-state-nmr-insights-into-the-sequence-determinants-of-trimer-structure-and-fusion-activity
#8
Myungwoon Lee, Hongwei Yao, Byungsu Kwon, Alan J Waring, Peter Ruchala, Chandan Singh, Mei Hong
Enveloped viruses enter cells by using their fusion proteins to merge the virus lipid envelope and the cell membrane. While crystal structures of the water-soluble ectodomains of many viral fusion proteins have been determined, the structure and assembly of the C-terminal transmembrane domain (TMD) remains poorly understood. Here we use solid-state NMR to determine the backbone conformation and oligomeric structure of the TMD of the parainfluenza virus 5 (PIV5) fusion protein. 13C chemical shifts indicate that the central leucine-rich segment of the TMD is α-helical in POPC/cholesterol membranes and POPE membranes, while the Ile- and Val-rich termini shift to the β-strand conformation in the POPE membrane...
January 9, 2018: Journal of Molecular Biology
https://www.readbyqxmd.com/read/29327927/atom-dependent-edge-enhanced-second-harmonic-generation-on-mos2-monolayers
#9
Kuang-I Lin, Yen-Hung Ho, Shu-Bai Liu, Jian-Jhih Ciou, Bo-Ting Huang, Christopher Chen, Han-Ching Chang, Chien-Liang Tu, Chang-Hsiao Chen
Edge morphology and lattice orientation of single-crystal molybdenum disulfide (MoS2) monolayers, a transition metal dichalcogenide (TMD), possessing a triangular shape with different edges grown by chemical vapor deposition are characterized by atomic force microscopy and transmission electron microscopy. Multiphoton laser scanning microscopy is utilized to study one-dimensional atomic edges of MoS2 monolayers with localized mid-gap electronic states, which result in greatly enhanced optical second-harmonic generation (SHG)...
January 12, 2018: Nano Letters
https://www.readbyqxmd.com/read/29327658/immunohistochemical-analysis-of-il-1-receptor-1-in-the-discs-of-patients-with-temporomandibular-joint-dysfunction
#10
Luis Eduardo Almeida, Adam Sorenson, Kyle Hresko, Seth Butcher, Rosalia Leonardi, Carla Loreto, Jose Bosio, Lobat Tayebi, Andrea Doetzer
Objective Temporomandibular joint dysfunction (TMD) may affect a patient's quality of life, and one of the etiologies can be anterior disc displacement with reduction (ADDwR) and anterior disc displacement without reduction (ADDWoR). Interleukin 1 Receptor 1 (IL-1R1) is a membrane receptor that plays an important role on initiating immune and inflammatory response by binding the agonists ligands of IL-1 alpha and IL-1 beta. Therefore, the aim of this study was to evaluate, through immunohistochemical analysis, the association of IL-1R1 with TMD...
January 12, 2018: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/29318948/a-comparative-clinical-study-of-temporomandibular-disorder-patients-in-the-otolaryngology-clinic-versus-a-rheumatology-clinic
#11
Kamal G Effat, Abeer Berty
Objective Temporomandibular disorders (TMD) may be associated with local or widespread symptoms, including pain. The aim of this study was to compare clinical features of TMD patients presenting to an otolaryngology clinic with TMD patients presenting to a rheumatology clinic. Methods The study included 107 patients in the otolaryngology setting and 103 patients in the rheumatology setting. A comparison between both groups was made regarding the clinical data. Results Patients in the otolaryngology setting featured more otological symptoms, compared with those in the rheumatology setting...
January 10, 2018: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/29318882/charge-transfer-induced-p-type-channel-in-mos2-flake-field-effect-transistor
#12
Sung-Wook Min, Minho Yoon, Sung Jin Yang, Kyeong Rok Ko, Seongil Im
Two-dimensional (2D) transition-metal dichalcogenide semiconductor (TMD), MoS2 has received extensive attention for decades due to their outstanding electrical and mechanical properties for next generation devices. One weakness of MoS2, however, is that it only shows n-type conduction revealing its limitations for homogeneous PN diodes and complementary inverters. Here, we introduce a charge-transfer method to modify the conduction property of MoS2 from n- to p-type. We initially deposited n-type InGaZnO (IGZO) film on top of MoS2 flake, so that electron charges might be transferred from MoS2 to IGZO during air ambient annealing...
January 10, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29315065/-congenitally-missing-maxillary-lateral-incisors-long-term-periodontal-and-functional-evaluation-after-orthodontic-space-closure-with-first-premolar-intrusion-and-canine-extrusion
#13
Marco Rosa, Patrizia Lucchi, Simona Ferrari, Bjørn U Zachrisson, Alberto Caprioglio
INTRODUCTION: The aims of this investigation were to evaluate associations between orthodontic space closure (including first premolar intrusion and canine extrusion for esthetic reasons) and periodontal tissue deterioration over a 10-year period in subjects with one or both missing maxillary lateral incisors and to investigate the occurrence of signs or symptoms of temporomandibular disorder (TMD). METHODS: This was a retrospective cohort study comprising patients treated by the same orthodontist...
December 2017: L' Orthodontie Française
https://www.readbyqxmd.com/read/29314140/prevalence-of-tinnitus-according-to-temporomanibular-joint-disorders-and-dental-pain-the-korean-national-population-based-study
#14
Y H Kim, Y G Park, K D Han, D Vu, K H Cho, S Y Lee
Some studies have reported that temporomandibular joint disorder (TMD) is related to tinnitus. However, there is no study of the relationship and prevalence of dental pain and tinnitus. We evaluated the associations between the prevalence of tinnitus and TMD and dental pain by analyzing the Korean national health survey. We analyzed total 11,745 participants. Presence of tinnitus, TMD symptoms, and dental pain were surveyed by self-assessment questionnaires from the all participants. Multivariable regression analysis was applied to acquire odds ratios (OR) and 95% confidence intervals (CI)...
January 3, 2018: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/29313751/a-randomized-double-blind-placebo-controlled-four-arm-parallel-study-investigating-the-effect-of-a-broad-spectrum-wellness-beverage-on-mood-state-in-healthy-moderately-stressed-adults
#15
Malkanthi Evans, Joseph Antony, Najla Guthrie, Bernie Landes, Okezie I Aruoma
OBJECTIVE: The objective of this study was to investigate the effect of a broad-spectrum wellness beverage (Zeal Wellness [ZW]) on standardized measures of mood states, including overall feelings of vitality, in healthy, moderately stressed adults. METHODS: A randomized, double-blind, placebo-controlled clinical trial was conducted among 99 eligible participants prescreened for moderate stress. Participants were randomized to one of four groups and received ZW once daily (1-dose-ZW; 14 g), ZW twice daily (2-dose-ZW; 28 g), placebo once daily (1-dose-placebo), or placebo twice daily (2-dose-placebo) for 4 weeks...
January 9, 2018: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/29311609/the-coupled-straintronic-photothermic-effect
#16
Vahid Rahneshin, Dominika A Ziolkowska, Arthur McClelland, Jaya Cromwell, Jacek B Jasinski, Balaji Panchapakesan
We describe the coupled straintronic-photothermic effect where coupling between bandgap of the 2D layered semiconductor under localized strains, optical absorption and the photo-thermal effect results in a large chromatic mechanical response in TMD-nanocomposites. Under the irradiation of visible light (405 nm to 808 nm), such locally strained atomic thin films based on 2H-MoS2 embedded in an elastomer such as poly (dimethyl) siloxane matrix exhibited a large amplitude of photo-thermal actuation compared to their unstrained counterparts...
January 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29308993/the-role-of-occlusion-in-temporomandibular-disorders-tmd-in-the-northern-finland-birth-cohort-nfbc-1966
#17
Päivi Jussila, Laura Krooks, Ritva Näpänkangas, Jari Päkkilä, Raija Lähdesmäki, Pertti Pirttiniemi, Aune Raustia
Objective To investigate the role of occlusion in temporomandibular disorders (TMDs) in the Northern Finland Birth Cohort 1966 (NFBC 1966). Methods Subjects (n = 1962) participated in clinical medical and dental examinations. The association between TMD signs and diagnoses with occlusal disturbances, i.e. malocclusions and occlusal interferences, was examined. Pearson's chi-square test, as expressed by odds ratios (OR) and 95% confidence intervals (CI) and logistic regression models, were used in the analysis...
January 8, 2018: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/29305511/a-cytoplasmic-antiholin-is-embedded-in-frame-with-the-holin-in-a-lactobacillus-fermentum-bacteriophage
#18
Tingting Guo, Yongping Xin, Chenchen Zhang, Jian Kong
In double-stranded DNA bacteriophages, infection cycles are ended by host cell lysis through the action of phage-encoded endolysins and holins. The precise timing of lysis is regulated by the holin inhibitors, named antiholins. Sequence analysis has revealed that holins with a single transmembrane domain (TMD) are prevalent in Lactobacillus bacteriophages. A temperate bacteriophage of Lbfermentum, ϕPYB5, has a two-component lysis cassette containing endolysin Lyb5 and holin Hyb5. The hyb5 gene is 465-bp long, encoding 154 amino acid residues with an N-terminal TMD and a large cytoplasmic C-terminal domain...
January 5, 2018: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29300013/structure-of-the-glucagon-receptor-in-complex-with-a-glucagon-analogue
#19
Haonan Zhang, Anna Qiao, Linlin Yang, Ned Van Eps, Klaus S Frederiksen, Dehua Yang, Antao Dai, Xiaoqing Cai, Hui Zhang, Cuiying Yi, Can Cao, Lingli He, Huaiyu Yang, Jesper Lau, Oliver P Ernst, Michael A Hanson, Raymond C Stevens, Ming-Wei Wang, Steffen Reedtz-Runge, Hualiang Jiang, Qiang Zhao, Beili Wu
Class B G-protein-coupled receptors (GPCRs), which consist of an extracellular domain (ECD) and a transmembrane domain (TMD), respond to secretin peptides to play a key part in hormonal homeostasis, and are important therapeutic targets for a variety of diseases. Previous work has suggested that peptide ligands bind to class B GPCRs according to a two-domain binding model, in which the C-terminal region of the peptide targets the ECD and the N-terminal region of the peptide binds to the TMD binding pocket. Recently, three structures of class B GPCRs in complex with peptide ligands have been solved...
January 3, 2018: Nature
https://www.readbyqxmd.com/read/29297553/effect-of-occlusal-splints-on-the-stress-distribution-on-the-temporomandibular-joint-disc
#20
Fabiane Maria Ferreira, Paulo Cézar Simamoto-Júnior, Carlos José Soares, António Manuel de Amaral Monteiro Ramos, Alfredo Júlio Fernandes-Neto
Conservative approach, including occlusal splint therapy, is the first option to treat temporomandibular disorders (TMD), because of its reversibility. The present study analyzed the effect of the articular disc position and occlusal splints use on the stress distribution on this disc. A two-dimensional (2D) finite element (FE) model of the temporomandibular joint with the articular disc at its physiologic position was constructed based on cone-beam computed tomography. Three other FE models were created changing the disc position, according to occlusal splint use and anterior disc displacement condition...
May 2017: Brazilian Dental Journal
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