3,224 results match your criteria interface entire

Development of dental inspection method: nondestructive evaluation of a dentin-adhesive interface by acoustic emission.

J Prosthodont Res 2021 May 11. Epub 2021 May 11.

Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka.

Purpose: The state of adhesion between root dentin and a resin composite core material was inspected using acoustic emission (AE).

Methods: A total of 14 human incisors and premolars were used to prepare "no-adhesive group" and "adhesive group" specimens. For "adhesive group" specimens, a bonding agent was applied to root canal dentin. Read More

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A Review of the Global Impact of the COVID-19 Pandemic on Public Mental Health, with a Comparison Between the USA, Australia, and Poland with Taiwan and Thailand.

Med Sci Monit 2021 May 11;27:e932220. Epub 2021 May 11.

Department of Adult Psychiatry, Medical University of Łódź, Łódź, Poland.

Coronavirus may have a negative impact not only on physical, but also on mental wellbeing. Despite the different approaches of countries to stop the spread of the virus and different infection rates, the dynamically developing pandemic has already affected the entire world. The consequences of the coronavirus for our mental health can be divided into those related to strategies for the prevention of infection, like isolation, quarantine, limitation of social contacts, and remote work, and those related to the direct impact of infection on our nervous system. Read More

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A Custom-Made Device for Reproducibly Depositing Pre-metered Doses of Nebulized Drugs on Pulmonary Cells .

Front Bioeng Biotechnol 2021 21;9:643491. Epub 2021 Apr 21.

Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Saarbrücken, Germany.

The deposition of pre-metered doses (i.e., defined before and not after exposition) at the air-liquid interface of viable pulmonary epithelial cells remains an important but challenging task for developing aerosol medicines. Read More

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Long-Term Outcome of Small Head Metal-On-Metal Total Hip Arthroplasty: A 15-to-22 Year Follow-Up.

J Arthroplasty 2021 Apr 21. Epub 2021 Apr 21.

Department of Orthopedics, SMBD-Jewish General Hospital, Montreal, QC, Canada.

Background: The Metasul articular interface was a second-generation metal-on-metal (MoM) total hip arthroplasty (THA) that was introduced as a promising interface with improved manufacturing technology, better clearances, and enhanced metal hardness. In December 2001, the manufacturer recalled these implants due to the failure of cup osseointegration.

Methods: Between 1997 and 2004, 168 consecutive primary Metasul THAs were performed in 144 patients. Read More

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Multivariate assessment of outflow water quality in highly urbanized creek system: implication of natural and anthropogenic processes.

Environ Sci Pollut Res Int 2021 May 3. Epub 2021 May 3.

CSIR-National Institute of Oceanography, Regional Centre Lokhandwala Rd. Andheri (W), Mumbai, 400053, India.

Nutrient source and transport study in tropical creeks adjacent to megacities are sparse on a regional and global scale. High-frequency chemical data collected during 2017-2018 in the Thane creek system, the largest micro-tidal urbanized creek in Asia, were analysed to assess the chemical water quality, with its linkage to different hydrological stages (southwest monsoon, post- and pre-monsoon) and ongoing anthropogenic activities. Cluster analysis indicates typical zonation between creek outflow and nearshore waters with distinctive physicochemical properties. Read More

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Studying the Bulk and Contour Ice Nucleation of Water Droplets via Quartz Crystal Microbalances.

Micromachines (Basel) 2021 Apr 20;12(4). Epub 2021 Apr 20.

Department of Distributed Information and Control Systems, Institute of Information and Communication Technologies, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Bl.2, 1113 Sofia, Bulgaria.

Due to the stochastic and time-dependent character of the ice embryo formation and growth (i.e., a process that can be analyzed statistically, but cannot be predicted precisely), the heterogeneous ice nucleation on atmospheric aerosols or macroscopic solid surfaces is still shrouded in mystery, regardless of the extremely active research and exponential progress within this scientific field. Read More

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Understanding the Leakage Mechanisms and Breakdown Limits of Vertical GaN-on-Si pnn Diodes: The Road to Reliable Vertical MOSFETs.

Micromachines (Basel) 2021 Apr 16;12(4). Epub 2021 Apr 16.

Department of Information Engineering, University of Padua, 35131 Padova, Italy.

This work investigates pnn GaN-on-Si vertical structures, through dedicated measurements and TCAD simulations, with the ultimate goal of identifying possible strategies for leakage and breakdown optimization. First, the dominant leakage processes were identified through temperature-dependent current-voltage characterization. Second, the breakdown voltage of the diodes was modelled through TCAD simulations based on the incomplete ionization of Mg in the p GaN layer. Read More

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Searching Configurations in Uncertainty Space: Active Learning of High-Dimensional Neural Network Reactive Potentials.

J Chem Theory Comput 2021 May 27;17(5):2691-2701. Epub 2021 Apr 27.

Hefei National Laboratory for Physical Science at the Microscale, Department of Chemical Physics, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei, Anhui 230026, China.

Neural network (NN) potential energy surfaces (PESs) have been widely used in atomistic simulations with ab initio accuracy. While constructing NN PESs, their training data points are often sampled by molecular dynamics trajectories. This strategy can be however inefficient for reactive systems involving rare events. Read More

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FGDB: Database of follicle stimulating hormone glycans.

Comput Struct Biotechnol J 2021 22;19:1635-1640. Epub 2021 Mar 22.

Department of Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, NE 68198, United States.

Glycomics, the study of the entire complement of sugars of an organism has received significant attention in the recent past due to the advances made in high throughput mass spectrometry technologies. These analytical advancements have facilitated the characterization of glycans associated with the follicle-stimulating hormones (FSH), which play a central role in the human reproductive system both in males and females utilizing regulating gonadal (testicular and ovarian) functions. The irregularities in FSH activity are also directly linked with osteoporosis. Read More

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Spatio-temporal modulation of self-assembled central aggregates of buoyant colloids in sessile droplets using vapor mediated interactions.

J Colloid Interface Sci 2021 Apr 8;598:136-146. Epub 2021 Apr 8.

Department of Mechanical Engineering, Indian Institute of Science, Bangalore 560012, India. Electronic address:

A functional sessile droplet containing buoyant colloids (ubiquitous in applications like chemical sensors, drug delivery systems, and nanoreactors) forms self-assembled aggregates. The particles initially dispersed over the entire drop-flocculates at the center. We attribute the formation of such aggregates to the finite radius of curvature of the drop and the buoyant nature of particles. Read More

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Polymeric matrix hydrophobicity governs saponin packing-density on nanoparticle surface and the subsequent biological interactions.

J Colloid Interface Sci 2021 Aug 15;596:500-513. Epub 2021 Mar 15.

Department of Pharmaceutics, Institute of Pharmacy, University of Bonn, Bonn, Germany; PEPITE EA4267, Université de Bourgogne/Franche-Comté, Besançon, France. Electronic address:

This study investigated the loading behavior of Quillaja saponin as a model surface-active cargo on (NP) nanoparticles prepared with various hydrophobic polymers and using different organic solvents through emulsification/solvent evaporation, and the impact of NP surface hydrophobicity upon the cytotoxic and hemolytic properties of the loaded entity. A superficial monolayered arrangement of saponins on NP was established (R > 0.9) for all NP, as the saponin loading values complied with the Langmuir adsorption isotherm over the entire concentration range. Read More

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Application of Propofol in Oral and Maxillofacial Surgery Anesthesia Based on Smart Medical Blockchain Technology.

J Healthc Eng 2021 1;2021:5529798. Epub 2021 Apr 1.

Department of Hand and Foot Surgery, Affiliated Hospital of Beihua University, Jilin 132012, China.

The rapid development of intelligent computer technology has promoted the improvement of people's living standards and the application of the entire intelligent system. In modern medicine, doctors use their accumulated experience and medical knowledge to diagnose diseases and draw conclusions. In order to effectively inherit the diagnosis experience accumulated by doctors, R&D personnel put forward the idea of using artificial intelligence technology to develop an intelligent auxiliary medical diagnosis system. Read More

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A new method for quantification and 3D visualization of brain tumor adhesion using slip interface imaging in patients with meningiomas.

Eur Radiol 2021 Apr 14. Epub 2021 Apr 14.

Department of Radiology, Mayo Clinic, 200 First St SW, Opus 2-149, Rochester, MN, 55905, USA.

Objectives: To develop an objective quantitative method to characterize and visualize meningioma-brain adhesion using MR elastography (MRE)-based slip interface imaging (SII).

Methods: This retrospective study included 47 meningiomas (training dataset: n = 35; testing dataset: n = 12) with MRE/SII examinations. Normalized octahedral shear strain (NOSS) values were calculated from the acquired MRE displacement data. Read More

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RF shielding materials for highly-integrated PET/MRI systems.

Phys Med Biol 2021 Apr 28;66(9). Epub 2021 Apr 28.

Department of Physics of Molecular Imaging Systems, Institute for Experimental Molecular Imaging, RWTH Aachen University, Aachen, Germany.

Integration of magnetic resonance imaging (MRI) and positron emission tomography (PET) into a simultaneous device calls for adaptations of the radio frequency (RF) shielding concept. Conventional PET module housings fully encase the entire PET detector to reduce mutual interference. Excluding passive components, i. Read More

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J Wildl Dis 2021 Apr;57(2):327-337

Centre for Fish and Wildlife Health, Vetsuisse Faculty, University of Bern, Länggassstrasse 122, Postfach, 3001 Bern, Switzerland.

Footrot is a worldwide economically important, debilitating disease caused by Dichelobacter nodosus. In sheep (Ovis aries), it is characterized by lesions of varying severity, depending on the strain, whereas Alpine ibex (Capra ibex) seem to develop severe lesions, whatever the strain. Healthy carriers occur in livestock but are rare in wild ruminants. Read More

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A Viterbi decoder and its hardware Trojan models: an FPGA-based implementation study.

PeerJ Comput Sci 2020 2;6:e250. Epub 2020 Mar 2.

Department of Electronics and Communication Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Amritapuri, Kerala, India.

Integrated circuits may be vulnerable to hardware Trojan attacks during its design or fabrication phases. This article is a case study of the design of a Viterbi decoder and the effect of hardware Trojans on a coded communication system employing the Viterbi decoder. Design of a Viterbi decoder and possible hardware Trojan models for the same are proposed. Read More

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The cingulate oculomotor cortex.

Cortex 2021 May 4;138:341-355. Epub 2021 Mar 4.

German Center for Vertigo and Balance Disorders, Ludwig-Maximilians-University Munich, Munich, Germany; Institute for Neuroradiology, Ludwig-Maximilians-University Munich, Munich, Germany.

Knowledge about the relevance and extent of human eye movement control in the cingulate cortex to date is very limited. Experiments in non-human primates brought about evidence for a potentially central role of the dorsal bank of the cingulate sulcus in saccadic eye movements. In humans, a putative cingulate eye field (CEF) in the same region has been proposed; however, its function and location still remain controversial. Read More

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All-Atom MD Simulations of the HBV Capsid Complexed with AT130 Reveal Secondary and Tertiary Structural Changes and Mechanisms of Allostery.

Viruses 2021 03 26;13(4). Epub 2021 Mar 26.

Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA.

The hepatitis B virus (HBV) capsid is an attractive drug target, relevant to combating viral hepatitis as a major public health concern. Among small molecules known to interfere with capsid assembly, the phenylpropenamides, including AT130, represent an important antiviral paradigm based on disrupting the timing of genome packaging. Here, all-atom molecular dynamics simulations of an intact AT130-bound HBV capsid reveal that the compound increases spike flexibility and improves recovery of helical secondary structure in the spike tips. Read More

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Towards an Efficient CNN Inference Architecture Enabling In-Sensor Processing.

Sensors (Basel) 2021 Mar 10;21(6). Epub 2021 Mar 10.

Electrical and Computer Engineering Department, University of Florida, Gainesville, FL 32603, USA.

The astounding development of optical sensing imaging technology, coupled with the impressive improvements in machine learning algorithms, has increased our ability to understand and extract information from scenic events. In most cases, Convolution neural networks (CNNs) are largely adopted to infer knowledge due to their surprising success in automation, surveillance, and many other application domains. However, the convolution operations' overwhelming computation demand has somewhat limited their use in remote sensing edge devices. Read More

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A Digital Improvement-Trimming a Digital Temperature Sensor with EEPROM Reprogrammable Fuses.

Sensors (Basel) 2021 Mar 2;21(5). Epub 2021 Mar 2.

Faculty of Electronics, Politehnica University of Bucharest, Telecommunications and Information Technology, 999032 Bucharest, Romania.

An EEPROM (electrically erasable programmable read-only memory) reprogrammable fuse for trimming a digital temperature sensor is designed in a 0.18-µm CMOS EEPROM. The fuse uses EEPROM memory cells, which allow multiple programming cycles by modifying the stored data on the digital trim codes applied to the thermal sensor. Read More

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Studies of Resistance of PP/Natural Filler Polymer Composites to Decomposition Caused by Fungi.

Materials (Basel) 2021 Mar 11;14(6). Epub 2021 Mar 11.

Department of Engineering Materials and Biomaterials, Faculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18a, 44-100 Gliwice, Poland.

The article discusses the grain morphology of the natural filler from hazelnut and walnut shell flour. It was observed that the geometry of both meals is similar to each other and resembles uneven balls in shape. The heterogeneity and well-developed outer surface of the flour grains allow for filling the voids with the polymer matrix. Read More

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Covalently bonded hopanoid-Lipid A from Bradyrhizobium: The role of unusual molecular structure and calcium ions in regulating the lipid bilayers organization.

J Colloid Interface Sci 2021 Jul 18;594:891-901. Epub 2021 Mar 18.

CSGI, Center for Colloid and Surface Science, via della Lastruccia 3, Sesto Fiorentino (FI), Italy; Department of Chemical Sciences, University of Naples Federico II, via Cintia 4, 80126 Naples, Italy. Electronic address:

Lipopolysaccharides (LPS) are complex amphiphilic macromolecules forming the external leaflet of the outer membrane of Gram-negative bacteria. The LPS glycolipid portion, named Lipid A, is characterized by a disaccharide backbone carrying multiple acyl chains. Some Lipid A bear very-long-chain-fatty-acids (VLCFA), biosynthesized to span the entire lipid membrane profile. Read More

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Interpreting blood GLUcose data with R package iglu.

PLoS One 2021 1;16(4):e0248560. Epub 2021 Apr 1.

Department of Statistics, Texas A&M University, College Station, TX, United States of America.

Continuous Glucose Monitoring (CGM) data play an increasing role in clinical practice as they provide detailed quantification of blood glucose levels during the entire 24-hour period. The R package iglu implements a wide range of CGM-derived metrics for measuring glucose control and glucose variability. The package also allows one to visualize CGM data using time-series and lasagna plots. Read More

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Locate your soundscape: interacting with the acoustic environment.

Multimed Tools Appl 2021 Mar 25:1-21. Epub 2021 Mar 25.

Moovioole s.r.l, Via don Giuseppe Rizzi, 26, Bassano del Grappa (VI), Italy.

Although overshadowed by visual information, sound plays a central role in how people perceive an environment. The effect of a landscape is enriched by its , that is, the stratification of all the acoustic sources that, often unconsciously, are heard. This paper presents a framework for archiving, browsing, and accessing soundscapes, either remotely or on-site. Read More

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Hydrogel-based electrodes for selective cervical vagus nerve stimulation.

J Neural Eng 2021 Apr 20;18(5). Epub 2021 Apr 20.

Department of Electrical and Computer Engineering, Carnegie Mellon University, Pittsburgh, PA, United States of America.

Electrical vagus nerve stimulation (VNS) has the potential to treat a wide variety of diseases by modulating afferent and efferent communication to the heart, lungs, esophagus, stomach, and intestines. Although distal vagal nerve branches, close to end organs, could provide a selective therapeutic approach, these locations are often surgically inaccessible. In contrast, the cervical vagus nerve has been targeted for decades using surgically implantable helix electrodes to treat epileptic seizures and depression; however, to date, clinical implementation of VNS has relied on an electrode with contacts that fully wrap around the nerve, producing non-selective activation of the entire nerve. Read More

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Online asynchronous detection of error-related potentials in participants with a spinal cord injury using a generic classifier.

J Neural Eng 2021 Mar 29;18(4):046022. Epub 2021 Mar 29.

Institute of Neural Engineering, Graz University of Technology, Graz, Austria.

For brain-computer interface (BCI) users, the awareness of an error is associated with a cortical signature known as an error-related potential (ErrP). The incorporation of ErrP detection into BCIs can improve their performance.

Objective: This work has three main aims. Read More

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Ultrafast generation of highly crystalline graphene quantum dots from graphite paper via laser writing.

J Colloid Interface Sci 2021 Jul 15;594:460-465. Epub 2021 Mar 15.

College of Materials Science and Engineering, Linyi University, Linyi 276000, Shandong, China; College of Materials Science and Engineering, Institute for Graphene Applied Technology Innovation, Collaborative Innovation Centre for Marine Biomass Fibers, Materials and Textiles of Shandong Province, Qingdao University, Qingdao 266071, China. Electronic address:

Graphene quantum dots (GQDs) are attractive fluorescent nanoparticles that have wide applicability, are inexpensive, nontoxic, photostable, water-dispersible, biocompatible and environmental-friendly. Various strategies for the synthesis of GQDs have been reported. However, simple and efficient methods of producing GQDs with control over the size of the GQDs, and hence their optical properties, are sorely needed. Read More

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Surface structure tuning of BiOCl nanosheets by the sequential introduction of oxygen vacancies, PO and Ag for boosting photodegradation of tetracycline hydrochloride.

Environ Res 2021 Mar 23;197:111056. Epub 2021 Mar 23.

College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, PR China.

The surface structure significantly impacts the physicochemical properties of semiconductors. Constructing heterojunction is a universal approach to tune surface structure, which can effectively accelerate the charge transfer at the interface. Here, BiOCl nanosheets which occupy high ratio of surface atoms to entire atoms were used as a model photocatalyst, and a strategy was proposed to tune its surface structure by sequential introduction of oxygen vacancies, PO and Ag on surface of BiOCl nanosheets. Read More

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Bioelectrical interfaces with cortical spheroids in three-dimensions.

J Neural Eng 2021 Apr 14;18(5). Epub 2021 Apr 14.

Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, United States of America.

Three-dimensional (3D) neuronal spheroid culture serves as a powerful model system for the investigation of neurological disorders and drug discovery. The success of such a model system requires techniques that enable high-resolution functional readout across the entire spheroid. Conventional microelectrode arrays and implantable neural probes cannot monitor the electrophysiology (ephys) activity across the entire native 3D geometry of the cellular construct. Read More

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EquiSim: An Open-Source Articulatable Statistical Model of the Equine Distal Limb.

Front Vet Sci 2021 3;8:623318. Epub 2021 Mar 3.

imec-Vision Lab, University of Antwerp, Antwerp, Belgium.

Most digital models of the equine distal limb that are available in the community are static and/or subject specific; hence, they have limited applications in veterinary research. In this paper, we present an articulatable model of the entire equine distal limb based on statistical shape modeling. The model describes the inter-subject variability in bone geometry while maintaining proper jointspace distances to support model articulation toward different poses. Read More

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