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Sheila Adriana Mendoza-Mojica, Octavio Márquez-Mendoza, Marcela Veytia-López, Luciana Esther Ramos-Lira, Ricardo Orozco-Zavala
OBJECTIVE: Describe the occurrence of potentially traumatic events (PTE) in high-school students, measure subthreshold post-traumatic symptomatology in those who still experience PTE repercussions and associate the symptomatology with sociodemographic and PTE characteristics. MATERIALS AND METHODS: Analytic transversal study carried out in a convenience sample of one thousand students from three high schools in the State of Mexico. The Scale for Post Traumatic Stress in University Students was applied...
November 2017: Salud Pública de México
Jeffrey K Luttrull
OBJECTIVES: To examine the effect of subthreshold diode micropulse laser (SDM) on pattern electroretinography (PERG) and visual function in retinitis pigmentosa (RP). METHODS: The records of all patients (pts) undergoing SDM in a vitreoretinal subspecialty practice were reviewed. Inclusion criteria included the presence of RP evaluated before and after SDM by PERG. As a secondary outcome measure, the results of automated omnifield resolution perimetry (ORP) were also reviewed...
February 16, 2018: Eye
Chien-Hung Wu, Kow-Ming Chang, Yi-Ming Chen, Bo-Wen Huang, Yu-Xin Zhang, Shui-Jinn Wang, Jui-Mei Hsu
Atmospheric pressure plasma-enhanced chemical vapor deposition (AP-PECVD) was employed for the fabrication of indium gallium zinc oxide thin-film transistors (IGZO TFTs) with high transparent gallium zinc oxide (GZO) source/drain electrodes. The influence of post-deposition annealing (PDA) temperature on GZO source/drain and device performance was studied. Device with a 300 °C annealing demonstrated excellent electrical characteristics with on/off current ratio of 2.13 × 108, saturation mobility of 10 cm2/V-s, and low subthreshold swing of 0...
March 1, 2018: Journal of Nanoscience and Nanotechnology
Chien-Hung Wu, Kow-Ming Chang, Yi-Ming Chen, Bo-Wen Huang, Yu-Xin Zhang, Shui-Jinn Wang
Atmospheric pressure plasma-enhanced chemical vapor deposition (AP-PECVD) technique and KrF excimer laser annealing (ELA) were employed for the fabrication of indium gallium zinc oxide thin-film transistors (IGZO-TFTs). Device with a 150 mJ/cm2 laser annealing densities demonstrated excellent electrical characteristics with improved on/off current ratio of 4.7×107, high channel mobility of 10 cm2/V-s, and low subthreshold swing of 0.15 V/dec. The improvements are attributed to the adjustment of oxygen vacancies in the IGZO channel to an appropriate range of around 28...
March 1, 2018: Journal of Nanoscience and Nanotechnology
Sheng-Po Chang, Deng Shan
This paper presents the electrical characteristics of doping nitrogen in an amorphous InGaZnO thin film transistor. The IGZO:N film, which acted as a channel layer, was deposited using RF sputtering with a nitrogen and argon gas mixture at room temperature. The optimized parameters of the IGZO:N/IGZO TFT are as follows: threshold voltage is 0.5 V, field effect mobility is 14.34 cm2V-1S-1. The on/off current ratio is 106 and subthreshold swing is 1.48 V/decade. The positive gate bias stress stability of InGaZnO doping with nitrogen shows improvement compared to doping with oxygen...
April 1, 2018: Journal of Nanoscience and Nanotechnology
Ming-Hung Hsu, Sheng-Po Chang, Shoou-Jinn Chang, Chih-Wei Li, Jyun-Yi Li, Chih-Chien Lin
In this study, zinc indium tin oxide thin-film transistors (ZITO TFTs) were fabricated by the radio frequency (RF) sputtering deposition method. Adding indium cations to ZnO by co-sputtering allows the development of ZITO TFTs with improved performance. Material characterization revealed that ZITO TFTs have a threshold voltage of 0.9 V, a subthreshold swing of 0.294 V/decade, a field-effect mobility of 5.32 cm2/Vs, and an on-off ratio of 4.7 × 105. Furthermore, an investigation of the photosensitivity of the fabricated devices was conducted by an illumination test...
May 1, 2018: Journal of Nanoscience and Nanotechnology
C C Fan, Y C Chiu, C Liu, W W Lai, C H Cheng, D L Lin, G R Li, Y H Lo, C W Chang, C C Tsai, C Y Chang
The flicker noise of source follower transistors is the dominant noise source in image sensors. This paper reports a systematic study of the shallow trench isolation effect in transistors with different sizes under high temperature conditions that correspond to the quantity of empty defect sites. The effects of shallow trench isolation sidewall defects on flicker noise characteristics are investigated. In addition, the low-frequency noise and subthreshold swing degrade simultaneously in accordance to the device gate width scaling...
June 1, 2018: Journal of Nanoscience and Nanotechnology
Mats De Jaeger, Robbert-Jan van Hooff, Lisa Goudman, Alexis Valenzuela Espinoza, Raf Brouns, Martine Puylaert, Wim Duyvendak, Maarten Moens
Background: Spinal cord stimulation (SCS) is a proven and effective treatment for neuropathic pain conditions such as failed back surgery syndrome (FBSS). The hypothesis that different settings for SCS parameters activate unique, pain-relieving mechanisms has boosted the development of various SCS paradigms. High density spinal cord stimulation (HD-SCS) is one of those promising, novel stimulation forms characterized by subthreshold stimulation, delivering more pulses per second and a higher pulse density to the spinal cord than conventional SCS...
June 2017: Anesthesiology and Pain Medicine
Tak Lee, Insuk Lee
Genome-wide association studies (GWAS) have been applied for the genetic dissection of complex phenotypes in Arabidopsis thaliana. However, the significantly associated single-nucleotide polymorphisms (SNPs) could not explain all the phenotypic variations. A major reason for missing true phenotype-associated loci is the strict P-value threshold after adjustment for multiple hypothesis tests to reduce false positives. This statistical limitation can be partly overcome by increasing the sample size, but at a much higher cost...
February 13, 2018: Scientific Reports
Juan A Delgado-Notario, Jesus E Velazquez-Perez, Yahya M Meziani, Kristel Fobelets
Plasma waves in gated 2-D systems can be used to efficiently detect THz electromagnetic radiation. Solid-state plasma wave-based sensors can be used as detectors in THz imaging systems. An experimental study of the sub-THz response of II-gate strained-Si Schottky-gated MODFETs (Modulation-doped Field-Effect Transistor) was performed. The response of the strained-Si MODFET has been characterized at two frequencies: 150 and 300 GHz: The DC drain-to-source voltage transducing the THz radiation (photovoltaic mode) of 250-nm gate length transistors exhibited a non-resonant response that agrees with theoretical models and physics-based simulations of the electrical response of the transistor...
February 10, 2018: Sensors
Li-Min Mao, Nan He, Dao-Zhong Jin, John Q Wang
The acetylcholine muscarinic 4 (M4) receptor is a principal muscarinic receptor subtype present in the striatum. Notably, Gαi/o-coupled M4 receptors and Gαs/Golf-coupled dopamine D1 receptors are coexpressed in striatonigral projection neurons and are thought to interact with each other to regulate neuronal excitability, although underlying molecular mechanisms are poorly understood. In this study, we investigated the role of M4 receptors in the regulation of phosphorylation of α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptors in the rat normal and dopamine-stimulated striatum in vivo...
February 9, 2018: Neuroscience
Fleur Zeldenrust, Pascal Chameau, Wytse J Wadman
Mammalian thalamocortical relay (TCR) neurons switch their firing activity between a tonic spiking and a bursting regime. In a combined experimental and computational study, we investigated the features in the input signal that single spikes and bursts in the output spike train represent and how this code is influenced by the membrane voltage state of the neuron. Identical frozen Gaussian noise current traces were injected into TCR neurons in rat brain slices as well as in a validated three-compartment TCR model cell...
February 12, 2018: PLoS Computational Biology
Eliana María Cano Londoño, Isabel Cristina Mejía Gil, Katerine Uribe Hernández, Carmenza Ricardo Ramírez, Matilde Ligia Álvarez Gómez, Ricardo Antonio Consuegra Peña, Camilo Andrés Agudelo Vélez, Susana Zuluaga Penagos, Mussatye Elorza Parra, José G Franco Vásquez
OBJECTIVES: To describe the prevalence and characteristics of delirium during the initial evaluation of critically ill patients aged 5-14 years. METHOD/DESIGN: This is a cross-sectional descriptive study in a critical care unit. For six months, all patients were evaluated within the first 24-72 hours or when sedation permitted the use of the paediatric confusion assessment method for the intensive care unit (PCAM-ICU) and the Delirium Rating Scale-Revised-98 items #7 and #8 to determine motor type...
February 7, 2018: Intensive & Critical Care Nursing: the Official Journal of the British Association of Critical Care Nurses
Linda Fischer, Christian Leibold, Felix Felmy
Auditory signals carry relevant information on a large range of time scales from below milliseconds to several seconds. Different stages in the auditory brainstem are specialized to extract information in specific frequency domains. One biophysical mechanism to facilitate frequency specific processing are membrane potential resonances. Here, we provide data from three different brainstem nuclei that all exhibit high-frequency subthreshold membrane resonances that are all most likely based on low-threshold potassium currents...
2018: Frontiers in Cellular Neuroscience
Robin E Cushing, Kathryn L Braun, Susan W Alden C-Iayt, Alan R Katz
Introduction: Among veterans of post-9/11 conflicts, estimates of post-traumatic stress disorder (PTSD) range from 9% shortly after returning from deployment to 31% a year after deployment. Clinical and pharmaceutically based treatments are underutilized. This could be due to concerns related to lost duty days, as well as PTSD patients' fears of stigma of having a mental health condition. Yoga has been shown to reduce PTSD symptoms in the civilian population, but few studies have tested the impact of yoga on veterans of post-9/11 conflicts...
February 5, 2018: Military Medicine
Shun-Chiao Chang, Marta Crous-Bou, Jennifer Prescott, Bernard Rosner, Naomi M Simon, Wei Wang, Immaculata De Vivo, Olivia I Okereke
BACKGROUND: Research links psychological stress to accelerated cellular aging. Here we examined whether long-term patterns of depression and caregiving burden, forms of chronic psychological stress, were associated with shorter telomere length, a biomarker of cellular aging. METHODS: The study included 1250 healthy older women (mean: 68.0; range: 60-81 years) in the Nurses' Health Study. Long-term patterns in depressive symptoms and caregiving activity (separated into care of children/grandchildren vs...
January 9, 2018: Psychoneuroendocrinology
D Steyn-Ross, A Bukoski, M Steyn-Ross
No abstract text is available yet for this article.
September 2017: Veterinary Anaesthesia and Analgesia
Judit Balázs, Dóra Győri, Lili Olga Horváth, Gergely Mészáros, Dóra Szentiványi
BACKGROUND: The aim of the present study was to investigate the possible association between attention-deficit hyperactivity disorder (ADHD) and non-suicidal self-injury (NSSI) with special focus on the role of comorbidities and gender in a clinical sample of adolescents with both a dimensional and a categorical approach to psychopathology. METHODS: Using a structured interview, the Mini International Neuropsychiatric Interview Kid and a self-rated questionnaire, the Deliberate Self-Harm Inventory, the authors examined 202 inpatient adolescents (aged: 13-18 years) in the Vadaskert Child and Adolescent Psychiatric Hospital and Outpatient Clinic, Budapest, Hungary...
February 6, 2018: BMC Psychiatry
David Daniel Ebert, Claudia Buntrock, Dirk Lehr, Filip Smit, Heleen Riper, Harald Baumeister, Pim Cuijpers, Matthias Berking
Evidence for the impact of psychological Interventions for subthreshold depression (sD) is conflicting. Moreover, human resources to deliver such treatments are limited. This study aimed to evaluate the effectiveness of a web-based intervention with adherence-focused guidance in the treatment of sD. Participants with sD (CES-D≥ 16, no Major Depressive Disorder according to DSM-IV criteria, N = 204) recruited via a large health insurance were randomly allocated to a web-based mobile-supported cognitive-behavioral intervention or to a waitlist control condition with unrestricted access to usual care...
January 2018: Behavior Therapy
Hyung Gon Shin, Hyong Seo Yoon, Jin Sung Kim, Minju Kim, June Yeong Lim, Sanghyuck Yu, Ji Hoon Park, Yeonjin Yi, Taekyeong Kim, Seong Chan Jun, Seongil Im
Van der Waals (vdW) Schottky junction between two dimensional (2D) transition metal dichalcogenides (TMDs) is introduced here for both vertical and in-plane current devices: Schottky diodes and metal semiconductor field effect transistors (MESFETs). The Schottky barrier between conducting NbS2 and semiconducting n-MoS2 appeared as large as ~0.5 eV due to their work function difference. While Schottky diode shows an ideality factor of 1.8~4.0 with ON/OFF current ratio of 103~105, Schottky effect MESFET displays little gate hysteresis and ideal subthreshold swing of 60~80 mV/dec due to low density traps at the vdW interface...
February 5, 2018: Nano Letters
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