Background: The previous literature has revealed the relationship between alcohol abuse and violent behaviours; however, the results are not always conclusive, highlighting the need to explore other variables that allow us to establish risk profiles.
Aim: The goal is to examine whether the relation between alcohol abuse and physical violence towards a partner can be influenced (moderate) by difficulties in emotional regulation.
Setting: A public high school in Manabí (Ecuador).
Somatosensory evoked potentials are frequently acquired by stimulation of the median or tibial nerves (mSEPs and tSEPs) for intraoperative monitoring of sensory pathways. Due to their low amplitudes it is common practice to average 200 or more sweeps to discern the evoked potentials from the background EEG. The aim of this study was to investigate if an algorithm designed to determine the lowest sweep count needed to obtain reproducible evoked potentials in each patient significantly reduces the median necessary sweep count to under 200.
View Article and Find Full Text PDFACS Appl Mater Interfaces
April 2024
We investigated low-frequency current fluctuations, i.e., electronic noise, in FePS van der Waals layered antiferromagnetic semiconductor.
View Article and Find Full Text PDFThe development of cryogenic semiconductor electronics and superconducting quantum computing requires composite materials that can provide both thermal conduction and thermal insulation. We demonstrated that at cryogenic temperatures, the thermal conductivity of graphene composites can be both higher and lower than that of the reference pristine epoxy, depending on the graphene filler loading and temperature. There exists a well-defined cross-over temperature-above it, the thermal conductivity of composites increases with the addition of graphene; below it, the thermal conductivity decreases with the addition of graphene.
View Article and Find Full Text PDFA unique class of advanced materials-quantum composites based on polymers with fillers composed of a van der Waals quantum material that reveals multiple charge-density-wave quantum condensate phases-is demonstrated. Materials that exhibit quantum phenomena are typically crystalline, pure, and have few defects because disorder destroys the coherence of the electrons and phonons, leading to collapse of the quantum states. The macroscopic charge-density-wave phases of filler particles after multiple composite processing steps are successfully preserved in this work.
View Article and Find Full Text PDFUnfallchirurgie (Heidelb)
June 2023
Background And Objective: Providing trauma services demands high personnel resources and structural costs. The goal of this study was to show if the assignment of trauma patients to a defined A or B resuscitation room treatment as a modified management concept is safe and feasible.
Material And Methods: Between May 2020 and January 2021, all resuscitation room trauma patients were included in this single center prospective observational study.
The work is based on the results of a microscopic examination of 46 men and 50 women who were examined at the medical center for the treatment of hair and skin in the period 2022-2023. Depending on the age of the subjects, they were divided into two groups. The first group included 52 people (25 men and 27 women) of young age (21-35 years old).
View Article and Find Full Text PDFThe paper is based on the results of a CT study of 71 women with normal pelvic dimensions without pelvic bone or pelvic organ pathology who underwent the study in 2022-2023. All subjects consented to the study, which was performed according to the indications. The CT study consisted of determining the width, height, and thickness of the pubic symphysis in 3D reconstruction mode.
View Article and Find Full Text PDFWe report on the electrical gating of the charge-density-wave phases and current in -BN-capped three-terminal 1T-TaS heterostructure devices. It is demonstrated that the application of a gate bias can shift the source-drain current-voltage hysteresis associated with the transition between the nearly commensurate and incommensurate charge-density-wave phases. The evolution of the hysteresis and the presence of abrupt spikes in the current while sweeping the gate voltage suggest that the effect is electrical rather than self-heating.
View Article and Find Full Text PDFACS Appl Mater Interfaces
September 2022
We report the results of the investigation of bulk and surface acoustic phonons in the undoped and boron-doped single-crystal diamond films using the Brillouin-Mandelstam light scattering spectroscopy. The evolution of the optical phonons in the same set of samples was monitored with Raman spectroscopy. It was found that the frequency and the group velocity of acoustic phonons decrease nonmonotonically with the increasing boron doping concentration, revealing pronounced phonon softening.
View Article and Find Full Text PDFACS Appl Mater Interfaces
August 2022
The nature of the low-frequency 1/ noise in electronic materials and devices is one of the oldest unsolved physical problems ( is the frequency). The fundamental question of the noise source-fluctuations in the mobility . number of charge carriers-is still debated.
View Article and Find Full Text PDFWe conducted a tip-enhanced Raman scattering spectroscopy (TERS) and photoluminescence (PL) study of quasi-1D TaSe nanoribbons exfoliated onto gold substrates. At a selenium deficiency of ∼ 0.25 (Se/Ta = 2.
View Article and Find Full Text PDFWe report on the preparation of inks containing fillers derived from quasi-two-dimensional charge-density-wave materials, their application for inkjet printing, and the evaluation of their electronic properties in printed thin-film form. The inks were prepared by liquid-phase exfoliation of CVT-grown 1T-TaS crystals to produce fillers with nm-scale thickness and μm-scale lateral dimensions. Exfoliated 1T-TaS was dispersed in a mixture of isopropyl alcohol and ethylene glycol to allow fine-tuning of filler particles thermophysical properties for inkjet printing.
View Article and Find Full Text PDFThe work is based on a morphological study of ampoules of the fallopian tubes of 130 young and senile women who gave birth. Macrometric, histological, immunohistochemical and micrometric methods of investigation were applied. The regularities of age-related morphological variability of the fallopian tube ampoule are revealed, which are manifested in a decrease in the parameters of their length, as well as external diameters in the middle of the ampoule and at the places of transition of the isthmus into the ampoule and ampoule into the funnel from young age to old age.
View Article and Find Full Text PDFWe report on the investigation of thermal transport in noncured silicone composites with graphene fillers of different lateral dimensions. Graphene fillers are comprised of few-layer graphene flakes with lateral sizes in the range from 400 to 1200 nm and the number of atomic planes from 1 to ∼100. The distribution of the lateral dimensions and thicknesses of graphene fillers has been determined via atomic force microscopy statistics.
View Article and Find Full Text PDFACS Appl Mater Interfaces
October 2021
We report on the fabrication and characterization of electronic devices printed with inks of quasi-one-dimensional (1D) van der Waals materials. The quasi-1D van der Waals materials are characterized by 1D motifs in their crystal structure, which allow for their exfoliation into bundles of atomic chains. The ink was prepared by the liquid-phase exfoliation of crystals of TiS into quasi-1D nanoribbons dispersed in a mixture of ethanol and ethylene glycol.
View Article and Find Full Text PDFThe work is based on the results of a retrospective analysis of the medical records of 56 patients with traumatic brain injury complicated by acute subdural hematoma with a volume of 60-100 cm3. The patients were divided into 2 groups according to their age: the 1st group included 29 patients aged 22-29 years, the 2nd group consisted of 27 patients aged 61-69 years. The degree of impaired consciousness in the victims at admission to the clinic was evaluated on the Glasgow scale, the effectiveness of the treatment at discharge from the hospital was performed on the Rankin scale, assessing the degree of independence and disability.
View Article and Find Full Text PDFWe report on experimental investigation of thermal contact resistance, , of the noncuring graphene thermal interface materials with the surfaces characterized by different degree of roughness, . It is found that the thermal contact resistance depends on the graphene loading, , non-monotonically, achieving its minimum at the loading fraction of ~15 wt %. Decreasing the surface roughness by ~1 μm results in approximately the factor of ×2 decrease in the thermal contact resistance for this graphene loading.
View Article and Find Full Text PDFWe report on the preparation of flexible polymer composite films with aligned metallic fillers composed of atomic chain bundles of quasi-one-dimensional (1D) van der Waals material, tantalum triselenide (TaSe). The material functionality, embedded at the nanoscale level, is achieved by mimicking the design of an electromagnetic aperture grid antenna. The processed composites employ chemically exfoliated TaSe nanowires as the grid building blocks incorporated within the thin film.
View Article and Find Full Text PDFPolymer composite films containing fillers comprising quasi-1D van der Waals materials, specifically transition metal trichalcogenides with 1D structural motifs that enable their exfoliation into bundles of atomic threads, are reported. These nanostructures are characterized by extremely large aspect ratios of up to ≈10 . The polymer composites with low loadings of quasi-1D TaSe fillers (<3 vol%) reveal excellent electromagnetic interference shielding in the X-band GHz and extremely high frequency sub-THz frequency ranges, while remaining DC electrically insulating.
View Article and Find Full Text PDFThe work is based on the results of histological and immunohistochemical studies performed on the sectional material of 104 human corpses (59 men and 45 women) of young and old age. A comparative analysis of the morphological characteristics of the corpus callosum tissues using hematoxylin and eosin staining, the Nissl method (by Snesarev), by Van Gieson, by Spielmeyer, by Foot. An immunohistochemical study of the samples used a panel of antibodies to glial fibrillar acid protein (GFAP), the S-100 protein.
View Article and Find Full Text PDFThe work is based on the results of an organometric study of the corpus callosum (callosometry) among 93 people (49 men and 44 women) using the method of magnetic resonance imaging. A comparative analysing of the length, height, thickness of the roller and the knee of the corpus callosum, the depth of its occurrence (front, top, back) was carried out. The regularities of age variability of organometric characteristics of the corpus callosum, manifested in a decrease in its linear dimensions among old people in comparison with young people and a decrease in the depth of its occurrence.
View Article and Find Full Text PDFWe review the current state-of-the-art graphene-enhanced thermal interface materials for the management of heat in the next generation of electronics. Increased integration densities, speed and power of electronic and optoelectronic devices require thermal interface materials with substantially higher thermal conductivity, improved reliability, and lower cost. Graphene has emerged as a promising filler material that can meet the demands of future high-speed and high-powered electronics.
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