59,344 results match your criteria Boundary 2-an International Journal Of Literature And Culture[Journal]


Forensic based empirical study on ricochet behaviour of Kalashnikov bullets (7.62mm×39mm) on 1mm sheet metal.

Forensic Sci Int 2020 May 11;312:110313. Epub 2020 May 11.

Faculty of Medicine, University of Kelaniya, Sri Lanka. Electronic address:

Bullet ricochet off a surface in a shooting scene occurs in diverse conditions and affected by array of factors. Therefore ricochet analysis of a particular incident demands case by case analysis supported by the knowledge of existing subject knowledge and empirical testing. In this view, existing empirical test results on bullet ricochet experiments have become always assisted and referred by investigators during scene reconstruction and in Courts. Read More

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http://dx.doi.org/10.1016/j.forsciint.2020.110313DOI Listing

Retroperitoneal mesothelial cyst misdiagnosed as a congenital choledochal cyst for an infant patient: A case report and literature review.

Int J Surg Case Rep 2020 May 8;71:176-178. Epub 2020 May 8.

Department of Pediatric Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan Province, People's Republic of China.

Introduction: Mesothelial cyst (MC) is very uncommon in clinic, which could occasionally occur in peritoneal, retroperitoneal or even pleural cavity.

Presentation Of Case: We hereby described an infant patient with retroperitoneal MC who was misdiagnosed as congenital choledochal cyst by both radiologists and clinicians. A choledochal cyst resection with hepatojejunostomy under the da Vinci surgical system was routinely prepared for this patient but a local resection for the whole lesion was unexpectedly performed during the operation. Read More

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http://dx.doi.org/10.1016/j.ijscr.2020.04.075DOI Listing

FDA Initiative for Drug Facts Label for Over-the-Counter Naloxone.

N Engl J Med 2020 May;382(22):2129-2136

From the Center for Drug Evaluation and Research, Food and Drug Administration, Silver Spring, MD.

Background: The opioid crisis highlights the need to increase access to naloxone, possibly through regulatory approval for over-the-counter sales. To address industry-perceived barriers to such access, the Food and Drug Administration (FDA) developed a model drug facts label for such sales to assess whether consumers understood the key statements for safe and effective use.

Methods: In this label-comprehension study, we conducted individual structured interviews with 710 adults and adolescents, including 430 adults who use opioids and their family and friends. Read More

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http://dx.doi.org/10.1056/NEJMsa1912403DOI Listing

Multi-state QM/QM Extrapolation of UV/Vis Absorption Spectra with Point Charge Embedding.

J Chem Theory Comput 2020 May 27. Epub 2020 May 27.

The simulation of UV/Vis absorption spectra of large chromophores is prohibitively expensive with accurate quantum mechanical (QM) methods. Thus, hybrid methods, which treat the core chromophoric region at a high level of theory while the substituent effects are treated with a more computationally efficient method, may provide the best compromise between cost and accuracy. The ONIOM (our own N-layered integrated molecular orbital and molecular mechanics) method has proved successful at describing ground state processes. Read More

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http://dx.doi.org/10.1021/acs.jctc.0c00339DOI Listing

Structuring Memory Through Inference-Based Event Segmentation.

Top Cogn Sci 2020 May 27. Epub 2020 May 27.

Department of Psychology, University of Oregon.

Although the stream of information we encounter is continuous, our experiences tend to be discretized into meaningful clusters, altering how we represent our past. Event segmentation theory proposes that clustering ongoing experience in this way is adaptive in that it promotes efficient online processing as well as later reconstruction of relevant information. A growing literature supports this theory by demonstrating its important behavioral consequences. Read More

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http://dx.doi.org/10.1111/tops.12505DOI Listing

Spin-frustration with two quasi-degenerated spin states of a copper(ii) heptanuclear complex obtained from an amino acid ligand.

Dalton Trans 2020 May 27. Epub 2020 May 27.

Departamento de Química Inorgânica, Universidade Federal Fluminense (UFF), Outeiro de São João Batista, s/n, Campus do Valonguinho, Centro, 24020-141, Niterói, RJ, Brazil.

The Cu(ii) heptanuclear complex (Cu7atac) was synthesised using the hydrated amino acid ligand 2-(5-amino-1H-1,2,4-triazol-3-yl)acetic acid (Hatac·H2O). Single crystal X-ray diffraction analysis revealed a μ3-hydroxo bridged Cu(ii) heptanuclear complex, consisting of two triangular subunits and one Cu(ii) ion as a bridge with the formula [Cu7(atac)6(μ3-OH)2(NO3)2(H2O)10](NO3)4. The magnetic behaviour of this discrete 0D complex shows strong antiferromagnetic couplings between Cu(ii) mediated by N,N bonding and an anti-anti modes of the carboxylate anion of the ligand atac-. Read More

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http://dx.doi.org/10.1039/c9dt04501eDOI Listing

Electrochemiluminescence Imaging for the Morphological and Quantitative Analysis of Living Cells under External Stimulation.

Anal Chem 2020 May 27. Epub 2020 May 27.

In this work, a simple electrochemiluminescence (ECL) imaging method based on the cell shield of the ECL emission was developed for the morphological and quantitative analysis of living cells under external stimulation. ECL images of MCF-7 cells cultured on or captured at the glassy carbon electrode (GCE) surface in a solution of tris(2,2'-bipyridyl)-ruthenium (II)-tri-n-propylamine were recorded. Important morphological characteristics of living cells, including cell shape, cell area, average cell boundary, and junction distance between two adjacent cells, were directly obtained using the developed negative ECL imaging method. Read More

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http://dx.doi.org/10.1021/acs.analchem.0c00528DOI Listing

Reduced order methods for parametric optimal flow control in coronary bypass grafts, towards patient-specific data assimilation.

Int J Numer Method Biomed Eng 2020 May 27:e3367. Epub 2020 May 27.

mathLab, Mathematics area, SISSA -International School for Advance Studies, Trieste, Italy.

Coronary artery bypass grafts (CABG) surgery is an invasive procedure performed to circumvent partial or complete blood flow blockage in coronary artery disease (CAD). In this work, we apply a numerical optimal flow control model to patientspecific geometries of CABG, reconstructed from clinical images of real-life surgical cases, in parameterized settings. The aim of these applications is to match known physiological data with numerical hemodynamics corresponding to different scenarios, arisen by tuning some parameters. Read More

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http://dx.doi.org/10.1002/cnm.3367DOI Listing

Improving the Conductivity of Solid Polymer Electrolyte by Grain Reforming.

Nanoscale Res Lett 2020 May 26;15(1):122. Epub 2020 May 26.

School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu, 611731, China.

Polyethylene oxide (PEO)-based solid polymer electrolyte (SPE) is considered to have great application prospects in all-solid-state li-ion batteries. However, the application of PEO-based SPEs is hindered by the relatively low ionic conductivity, which strongly depends on its crystallinity and density of grain boundaries. In this work, a simple and effective press-rolling method is applied to reduce the crystallinity of PEO-based SPEs for the first time. Read More

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http://dx.doi.org/10.1186/s11671-020-03355-4DOI Listing

Dorsal prefrontal and premotor cortex of the ferret as defined by distinctive patterns of thalamo-cortical projections.

Brain Struct Funct 2020 May 26. Epub 2020 May 26.

Institute for Systems Research, University of Maryland, College Park, MD, 20742, USA.

Recent studies of the neurobiology of the dorsal frontal cortex (FC) of the ferret have illuminated its key role in the attention network, top-down cognitive control of sensory processing, and goal directed behavior. To elucidate the neuroanatomical regions of the dorsal FC, and delineate the boundary between premotor cortex (PMC) and dorsal prefrontal cortex (dPFC), we placed retrograde tracers in adult ferret dorsal FC anterior to primary motor cortex and analyzed thalamo-cortical connectivity. Cyto- and myeloarchitectural differences across dorsal FC and the distinctive projection patterns from thalamic nuclei, especially from the subnuclei of the medial dorsal (MD) nucleus and the ventral thalamic nuclear group, make it possible to clearly differentiate three separate dorsal FC fields anterior to primary motor cortex: polar dPFC (dPFCpol), dPFC, and PMC. Read More

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http://dx.doi.org/10.1007/s00429-020-02086-7DOI Listing

Plasmonic Resonances of Metal Nanoparticles: Atomistic vs. Continuum Approaches.

Front Chem 2020 7;8:340. Epub 2020 May 7.

Scuola Normale Superiore, Piazza dei Cavalieri 7, Pisa, Italy.

The fully atomistic model, ωFQ, based on textbook concepts (Drude theory, electrostatics, quantum tunneling) and recently developed by some of the present authors in , , 6004-6015 is applied to the calculation of the optical properties of complex Na, Ag, and Au nanostructures. In ωFQ, each atom of the nanostructures is endowed with an electric charge that can vary according to the external electric field. The electric conductivity between nearest atoms is modeled by adopting the Drude model, which is reformulated in terms of electric charges. Read More

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http://dx.doi.org/10.3389/fchem.2020.00340DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7221199PMC

Impact of Salinity on the Gastrointestinal Bacterial Community of .

Front Microbiol 2020 8;11:683. Epub 2020 May 8.

Centre for Limnology, Estonian University of Life Sciences, Tartu, Estonia.

Differences in salinity are boundaries that act as barriers for the dispersal of most aquatic organisms. This creates distinctive biota in freshwater and brackish water (mesohaline) environments. To test how saline boundaries influence the diversity and composition of host-associated microbiota, we analyzed the microbiome within the digestive tract of , an organism able to cross the freshwater and mesohaline boundary. Read More

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http://dx.doi.org/10.3389/fmicb.2020.00683DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7225522PMC

Width identification of transition zone between desert and oasis based on NDVI and TCI.

Sci Rep 2020 May 26;10(1):8672. Epub 2020 May 26.

Department of Resources and Environmental Engineering, Ludong University, Yantai, 264025, P.R. China.

The oasis-desert transition zone, the boundary between the desert and oasis, has special significance in maintaining oasis stability and indicating ecosystem health. The width of the boundary is one of the critical indicators to determine the sampling design and restrict findings scaling in the study of the desert oasis transition zone. Buffer analyze and focal analyze were conducted to determine the width among oasis-desert transition zone and oasis artificial sand fixation zone in Hexi corridor China. Read More

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http://dx.doi.org/10.1038/s41598-020-65286-5DOI Listing

XO-PBC: An accurate and efficient method for molecular crystals.

Authors:
Bozhu Chen Xin Xu

J Chem Theory Comput 2020 May 26. Epub 2020 May 26.

In this work, we propose the XO-PBC method, which combines the eXtended ONIOM method (XO) with the periodic boundary condition (PBC) for the description of molecular crystals. XO-PBC tries to embed a finite cluster cut out from the solid into the periodic environment, making it feasible to employ advanced molecular quantum chemistry methods, which are usually prohibitively expensive for direct PBC calculations. In particular, XO-PBC utilizes the results from force calculations to design the scheme to fragment the molecule when crystals are made of large molecules and to select cluster model systems automatically consisting of dimer up to tetramer interactions for embedding. Read More

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http://dx.doi.org/10.1021/acs.jctc.0c00232DOI Listing

Simulation of Wrinkling during Bending of Composite Reinforcement Laminates.

Materials (Basel) 2020 May 21;13(10). Epub 2020 May 21.

Zhejiang Provincial Key Laboratory of Robotics and Intelligent Manufacturing Equipment Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.

When a thick laminate is subjected to bending, under certain boundary conditions, wrinkles may appear and develop due to the inextensibility of the fibers. Wrinkling is one of the most critical defects in composite manufacturing. Numerical simulation of the onset and growth of such wrinkles is an important tool for defining optimal process parameters. Read More

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http://dx.doi.org/10.3390/ma13102374DOI Listing

Numerical Modeling and Investigation of Amperometric Biosensors with Perforated Membranes.

Sensors (Basel) 2020 May 21;20(10). Epub 2020 May 21.

Department of Mechanical Engineering, Shahid Bahonar University of Kerman, Kerman 76169-14111, Iran.

The present paper aims to investigate the influence of perforated membrane geometry on the performance of biosensors. For this purpose, a 2-D axisymmetric model of an amperometric biosensor is analyzed. The governing equations describing the reaction-diffusion equations containing a nonlinear term related to the Michaelis-Menten kinetics of the enzymatic reaction are introduced. Read More

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http://dx.doi.org/10.3390/s20102910DOI Listing

The Effect of Pre-Annealing on the Evolution of the Microstructure and Mechanical Behavior of Aluminum Processed by a Novel SPD Method.

Materials (Basel) 2020 May 21;13(10). Epub 2020 May 21.

Department of Materials Science and Engineering, EEBE-Universitat Politècnica de Catalunya, 08019 Barcelona, Spain.

A novel continuous process of severe plastic deformation (SPD) named continuous close die forging (CCDF) is presented. The CCDF process combines all favorite advances of multidirectional forging and other SPD methods, and it can be easily scaled up for industrial use. Keeping constant both the cross section and the length of the sample, the new method promotes a refinement of the microstructure. Read More

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http://dx.doi.org/10.3390/ma13102361DOI Listing

Wettability Control of Interfaces for High-Performance Organic Thin-Film Transistors by Soluble Insulating Polymer Films.

ACS Omega 2020 May 6;5(19):10891-10899. Epub 2020 May 6.

Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Wuhan 430062, China.

Organic small-molecule semiconductors have higher carrier mobility compared to polymer semiconductors, while the actual performances of these materials are susceptible to morphological defects and misalignment of crystalline grains. Here, a new strategy is explored to control the crystallization and morphologies of a solution-processed organic small-molecule semiconductor 2,7-dioctyl[1]benzothieno[3,2-][1]benzothiophene (C8-BTBT) using soluble polymer films to control the wettability of substrates. Different from the traditional surface modification method, the polymer layer as a modification layer is soluble in the semiconductor solution during the fabrication of organic thin-film transistors (OTFTs). Read More

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http://dx.doi.org/10.1021/acsomega.0c00548DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241009PMC

High accuracy least-squares solutions of nonlinear differential equations.

J Comput Appl Math 2019 May 18;352:293-307. Epub 2018 Dec 18.

Mathematics Department, Blinn College, College Station, TX, United States.

This study shows how to obtain to initial and boundary value problems of ordinary nonlinear differential equations. The proposed method begins using an approximate solution obtained by existing integrator. Then, a least-squares fitting of this approximate solution is obtained using a , derived from . Read More

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http://dx.doi.org/10.1016/j.cam.2018.12.007DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7243685PMC

Real world fuel consumption prediction via a combined experimental and modeling technique.

Sci Total Environ 2020 May 7;734:139254. Epub 2020 May 7.

Laboratory of Applied Thermodynamics, Department of Mechanical Engineering, Aristotle University of Thessaloniki, 54124, Greece. Electronic address:

This study investigates the possibility to evaluate real-world fuel consumption and CO emissions based on a simulation approach and usage of generic vehicle simulation models, calibrated on the basis of experimental data recorded during on-road tests. A methodology for the development, calibration and validation of the models is described and the proposed simulation approach is applied on three Euro 6 vehicles, one diesel, one gasoline and one plug-in hybrid vehicle. The validation of the developed models is conducted using experimental data recorded during the testing campaign of the above mentioned vehicles. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.139254DOI Listing

Nuclei determine the spatial origin of mitotic waves.

Elife 2020 May 26;9. Epub 2020 May 26.

Laboratory of Dynamics in Biological Systems, KU Leuven, Leuven, Belgium.

Traveling waves play an essential role in coordinating mitosis over large distances, but what determines the spatial origin of mitotic waves remains unclear. Here, we show that such waves initiate at pacemakers, regions which oscillate faster than their surroundings. In cell-free extracts of eggs, we find that nuclei define such pacemakers by concentrating cell cycle regulators. Read More

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http://dx.doi.org/10.7554/eLife.52868DOI Listing

Nectin-2α is localized at cholinergic neuron dendrites and regulates synapse formation in the medial habenula.

J Comp Neurol 2020 May 26. Epub 2020 May 26.

Division of Pathogenetic Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan.

The medial habenula (MHb) receives afferents from the triangular septum and the medial septal complex, projects efferents to the interpeduncular nucleus (IPN) in the midbrain to regulate dopamine and serotonin levels, and is implicated in stress, depression, memory, and nicotine withdrawal syndrome. We previously showed that the cell adhesion molecule nectin-2α is localized at the boundary between adjacent somata of clustered cholinergic neurons and regulates the voltage-gated A-type K channel Kv4.2 localization at membrane specializations in the MHb. Read More

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http://dx.doi.org/10.1002/cne.24958DOI Listing

Partition of nanoswimmers between two immiscible phases: a soft and penetrable boundary.

Soft Matter 2020 May 26. Epub 2020 May 26.

Department of Chemical and Materials Engineering, Department of Physics, National Central University, Jhongli 320, Taiwan.

The behavior of run-and-tumble nanoswimmers which can self-propel in two immiscible liquids such as water-oil systems and are able to cross the interface is investigated by dissipative particle dynamics. At the steady-state, the partition ratio (φ) of nanoswimmers between the two immiscible liquids is obtained, and it depends on the active force (Fa), run time (τ), and swimmer-solvent interactions. The partition ratio φ is found to grow generally with increasing Fa2τ. Read More

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http://dx.doi.org/10.1039/d0sm00298dDOI Listing

[Construction and simulation mechanical analysis of dynamic knee joint finite element model based on CT image].

Zhongguo Gu Shang 2020 May;33(5):479-84

Department of Orthopaedics and Trauma, Wangjing Hospital of China Academy of Chinese Medical Sciences, Beijing 100102, China.

Objective: To construct a dynamic knee joint finite element model based on CT image data and verify the validity of the model. To provide a simulation model and basic data for biomechanical research of the knee joint by further finite element analysis.

Methods: The CT data of a healthy male knee joint was selected. Read More

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http://dx.doi.org/10.12200/j.issn.1003-0034.2020.05.018DOI Listing

Clinical implications of assessment of apixaban levels in elderly atrial fibrillation patients: J-ELD AF registry sub-cohort analysis.

Eur J Clin Pharmacol 2020 May 25. Epub 2020 May 25.

Division of Cardiology, Saiseikai Kumamoto Hospital, Kumamoto, Japan.

Purpose: To investigate the distribution of plasma apixaban levels and their relationships with clinical outcomes in elderly patients with atrial fibrillation (AF).

Method: The J-ELD AF Registry is a multicenter prospective observational study of Japanese non-valvular AF patients aged ≥75 years taking an on-label dose of apixaban (3015 patients from 110 institutions). Among them, plasma apixaban levels at trough were estimated by anti-Xa assay (Api-AXA) in 943 patients. Read More

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http://dx.doi.org/10.1007/s00228-020-02896-yDOI Listing

Estimation of boundary conditions for patient-specific liver simulation during augmented surgery.

Int J Comput Assist Radiol Surg 2020 May 25. Epub 2020 May 25.

Inria, 1 Place de l'Hôpital, Strasbourg, France.

Purpose: Augmented reality can improve the outcome of hepatic surgeries, assuming an accurate liver model is available to estimate the position of internal structures. While researchers have proposed patient-specific liver simulations, very few have addressed the question of boundary conditions. Resulting mainly from ligaments attached to the liver, they are not visible in preoperative images, yet play a key role in the computation of the deformation. Read More

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http://dx.doi.org/10.1007/s11548-020-02188-xDOI Listing

Usefulness of fluorescence visualization-guided surgery for early-stage tongue squamous cell carcinoma compared to iodine vital staining.

Int J Clin Oncol 2020 May 25. Epub 2020 May 25.

Department of Oral Medicine, Oral and Maxillofacial Surgery, Tokyo Dental College, Ichikawa General Hospital, 5-11-13 Sugano, Ichikawa, Chiba, 272-8513, Japan.

Background: In the most cases of oral squamous cell carcinoma (OSCC), oral epithelial dysplasia (OED) is found adjacent to the primary tumor. The delineation of surgical margins for OSCC is critical to minimize the risk for local recurrence. The aim of this study is to demonstrate that the fluorescence visualization (FV)- device can delineated the lesion visualizes OED of adjacent primary tumors by histopathologically comparison to conventional iodine vital staining. Read More

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http://dx.doi.org/10.1007/s10147-020-01710-0DOI Listing

Radiation-induced segregation in a ceramic.

Nat Mater 2020 May 25. Epub 2020 May 25.

Department of Engineering Physics and Nuclear Engineering, University of Wisconsin-Madison, Madison, WI, USA.

Radiation-induced segregation is well known in metals, but has been rarely studied in ceramics. We discover that radiation can induce notable segregation of one of the constituent elements to grain boundaries in a ceramic, despite the fact that the ceramic forms a line compound and therefore has a strong thermodynamic driving force to resist off-stoichiometry. Specifically, irradiation of silicon carbide at 300 °C leads to carbon enrichment near grain boundaries, whereas the enrichment diminishes for irradiation at 600 °C. Read More

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http://dx.doi.org/10.1038/s41563-020-0683-yDOI Listing

Multidimensional Global Optimization and Robustness Analysis in the Context of Protein-Ligand Binding.

J Chem Theory Comput 2020 May 25. Epub 2020 May 25.

Accuracy of protein-ligand binding free energy calculations utilizing implicit solvent models is critically affected by parameters of the underlying dielectric boundary, specifically the atomic and water probe radii. Here, a global multidimensional optimization pipeline is developed to find optimal atomic radii specifically for protein-ligand binding calculations in implicit solvent. The computational pipeline has these three key components: (1) a massively parallel implementation of a deterministic global optimization algorithm (VTDIRECT95), (2) an accurate yet reasonably fast generalized Born implicit solvent model (GBNSR6), and (3) a novel robustness metric that helps distinguish between nearly degenerate local minima via a post-processing step of the optimization. Read More

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http://dx.doi.org/10.1021/acs.jctc.0c00142DOI Listing

Relative humidity-temperature transition boundaries for anhydrous β-caffeine and caffeine hydrate crystalline forms.

J Food Sci 2020 May 25. Epub 2020 May 25.

Department of Food Science, Purdue University, 745 Agriculture Mall Drive, West Lafayette, IN, 47907, U.S.A.

Caffeine is a hydrate-forming polymorphic crystalline compound that can exist in α, β, and hydrate forms. Phase transitions between hydrate and anhydrous forms of a crystalline ingredient, and related water migration, can create product quality challenges. The objective of this study was to determine the relative humidity (RH)-temperature phase boundary between anhydrous β-caffeine and caffeine hydrate. Read More

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http://dx.doi.org/10.1111/1750-3841.15114DOI Listing

Enucleation of the Prostate for the Treatment of Benign Prostatic Hyperplasia Using a 980 nm Diode Laser.

J Vis Exp 2020 May 5(159). Epub 2020 May 5.

Urology, Beijing Hospital, National Center of Gerontology, Beijing Hospital; Graduate School of Peking Union Medical College, Beijing Hospital;

In the aging male population, the occurrence of lower urinary tract symptoms (LUTS) caused by benign prostatic hyperplasia (BPH) is a common problem. Here, we introduce a new technique called 980 nm diode laser enucleation (DiLEP) to treat BPH. Diode lasers can absorb both water and hemoglobin at the same time, so they are good for cutting and hemostasis. Read More

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http://dx.doi.org/10.3791/60532DOI Listing

Assessment of the SCAN Functional for Spin-State Energies in Spin-Crossover Systems.

J Phys Chem A 2020 May 25. Epub 2020 May 25.

The Strongly-Constrained and Appropriately Normed (SCAN) functional has been tested towards the calculation of spin-state energy differences in a dataset of 20 spin-crossover (SCO) systems, ranging from d4 to d7. The results shown that SCAN functional is able to correctly predict the low-spin state as the ground state for all systems, and the energy window provided by the calculations falls in the approximately range of energies that will allow for SCO to occur. Moreover, the SCAN functional can be used in periodic boundary conditions calculations, accounting for the effect of collective crystal vibrations and counterions in the thermochemistry of the spin-transition. Read More

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http://dx.doi.org/10.1021/acs.jpca.0c03758DOI Listing

A High-Performance Carbonate-Free Lithium|Garnet Interface Enabled by a Trace Amount of Sodium.

Adv Mater 2020 May 25:e2000575. Epub 2020 May 25.

School of Applied Physics and Materials, Wuyi University, Jiangmen, Guangdong, 529020, China.

Garnet-type solid-state electrolytes (SSEs) are promising for the realization of next-generation high-energy-density Li metal batteries. However, a critical issue associated with the garnet electrolytes is the poor physical contact between the Li anode and the garnet SSE and the resultant high interfacial resistance. Here, it is reported that the Li|garnet interface challenge can be addressed by using Li metal doped with 0. Read More

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http://dx.doi.org/10.1002/adma.202000575DOI Listing

An Adversarial Machine Learning Framework and Biomechanical Model Guided Approach for Computing 3D Lung Tissue Elasticity from End-Expiration 3DCT.

Med Phys 2020 May 25. Epub 2020 May 25.

Department of Radiation Oncology, University of California, Los Angeles, Los Angeles, California, 90095, USA.

Lung elastography aims at measuring the lung parenchymal tissue elasticity for applications ranging from diagnostic purposes to biomechanically-guided deformations. Characterizing the lung tissue elasticity requires 4D lung motion as an input, which is currently estimated by deformably registering 4DCT datasets. Since 4DCT imaging is widely used only in a radiotherapy treatment setup, there is a need to predict the elasticity distribution in the absence of 4D imaging for applications within and outside of radiotherapy domain. Read More

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http://dx.doi.org/10.1002/mp.14252DOI Listing

Work participation in young Norwegians: a 19-year follow up in a registry-based life-course cohort.

Scand J Public Health 2020 May 24:1403494820917507. Epub 2020 May 24.

Department of Occupational Medicine and Epidemiology, National Institute of Occupational Health, Norway.

The study objectives were to provide a quantitative description of work participation among young adults, and to outline the relations between work participation and social, educational and health-related characteristics throughout the life-course. We collected data in several national registries for all 318,705 individuals born in Norway 1967-1971 who were national residents on 1 January 1993. The criterion for work was annual occupational income above the boundary which identifies the core workforce. Read More

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http://dx.doi.org/10.1177/1403494820917507DOI Listing

A Deep Dive into Understanding Tumor Foci Classification using Multiparametric MRI Based on Convolutional Neural Network.

Med Phys 2020 May 25. Epub 2020 May 25.

Department of Radiation Oncology, Henry Ford Health System, Detroit, MI, 48202, USA.

Purpose: Deep learning models have had a great success in disease classifications using large data pools of skin cancer images or lung X-rays. However, data scarcity has been the roadblock of applying deep learning models directly on prostate multiparametric MRI (mpMRI). Although model interpretation has been heavily studied for natural images for the past few years, there has been a lack of interpretation of deep learning models trained on medical images. Read More

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http://dx.doi.org/10.1002/mp.14255DOI Listing

The multiple functions of hindbrain boundary cells: Tinkering boundaries?

Authors:
Cristina Pujades

Semin Cell Dev Biol 2020 May 21. Epub 2020 May 21.

Department of Experimental and Health Sciences, Universitat Pompeu Fabra, PRBB, Dr Aiguader 88, 08003, Barcelona, Spain. Electronic address:

Embryonic boundaries were first described in Drosophila, and then in vertebrate embryos, as cellular interfaces between compartments. They display signaling properties and in vertebrates might allocate cells fated to different anatomical structures, or cells that will play different functions over time. One of the vertebrate embryonic structures with boundaries is the hindbrain, the posterior brain vesicle, which is transitory segmented upon morphogenesis. Read More

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http://dx.doi.org/10.1016/j.semcdb.2020.05.002DOI Listing

Cross-plane and in-plane heat conductions in layer-by-layer membrane: Molecular dynamics study.

Langmuir 2020 May 23. Epub 2020 May 23.

A material with anisotropic heat conduction characteristics, which is determined by molecular scale structure, provides a way of controlling heat flow in nanoscale spaces. As such, here we consider layer-by-layer (LbL) membranes, which are an electrostatic assembly of polyelectrolyte multilayers and are expected to have different heat conduction characteristics between cross-plane and in-plane directions. We constructed models of a polyacrylic acid/polyethylenimine (PAA/PEI) LbL membrane sandwiched by charged solid walls and investigated their anisotropic heat conduction using molecular dynamics simulations. Read More

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http://dx.doi.org/10.1021/acs.langmuir.0c00845DOI Listing

[Anatomic study on safe insertion of acupuncture needle in Qiuhou (EX-HN7) acupoint].

Zhen Ci Yan Jiu 2020 May;45(5):416-8

Liaoning University of Traditional Chinese Medicine, Shenyang 110032, China.

Objective: To explore the anatomical structure of acupuncture point Qiuhou (EX-HN7) area for safe insertion of acupuncture needle.

Methods: A total of 28 orbital specimens of adult corpses (14 men and 14 women) were randomly selected to be observed by anatomical sectioning and layering methods. The acupoint EX-HN7, located at the junction between the 1/4 of the outer boundary and 3/4 of the inner boundary of the infraorbital margin according to the "Standardization of Acupoint Position" implemented by the People's Republic of China, and marked first with a color pen, followed by cutting the head into horizontal sections along the cross line by using a cadaver cutter and measuring the distance between the skin and blood vessels and main nerves with a digimatic caliper. Read More

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http://dx.doi.org/10.13702/j.1000-0607.190431DOI Listing

Usefulness of linked color imaging in the early detection of superficial esophageal squamous cell carcinomas.

Esophagus 2020 May 23. Epub 2020 May 23.

Department of Gastroenterology and Metabolism, Hiroshima University Hospital, Hiroshima, Japan.

Background And Aims: Linked color imaging (LCI) improved the visibility of gastric cancer and colorectal flat lesions. This study aimed to investigate the usefulness of LCI in detecting superficial esophageal squamous cell carcinomas (SESCC).

Methods: We enrolled 37 consecutive SESCC patients (46 SESCCs) diagnosed using LCI and blue laser imaging bright mode (BLI-BRT) and treated in Hiroshima University Hospital between April 2018 and November 2018. Read More

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http://dx.doi.org/10.1007/s10388-020-00749-2DOI Listing

Nonmechanical principle for producing a flow in a homogeneously aligned microfluidic nematic channel.

Eur Phys J E Soft Matter 2020 May 27;43(5):29. Epub 2020 May 27.

Saint Petersburg Institute for Machine Sciences, The Russian Academy of Sciences, 199178, Saint Petersburg, Russia.

Nonmechanical fluid pumping principle has been developed utilizing the interactions of both the director [Formula: see text] and velocity v fields and temperature T redistribution across a two-dimensional homogeneously-aligned nematic (HAN) microfluidic channel under the influence both of a heat flux [Formula: see text] and the surface electric field E, originating from the surface charge density [Formula: see text]. The heat flux [Formula: see text] is caused by the laser beam pulse focused on the channel's boundary, whereas the normally directed electric field is due to electric double layers, that is naturally created within the liquid crystal near a charged surface. Calculations, based upon the nonlinear extension of the classical Ericksen-Leslie theory, with accounting the entropy balance equation, show that due to the coupling between the [Formula: see text] and [Formula: see text], in the HAN microfluidic channel the vortical flow [Formula: see text] may be excited. Read More

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http://dx.doi.org/10.1140/epje/i2020-11953-0DOI Listing

Hybrid attention for automatic segmentation of whole fetal head in prenatal ultrasound volumes.

Comput Methods Programs Biomed 2020 May 1;194:105519. Epub 2020 May 1.

National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen, China; Medical UltraSound Image Computing (MUSIC) Lab, Shenzhen University, Shenzhen, China. Electronic address:

Background And Objective: Biometric measurements of fetal head are important indicators for maternal and fetal health monitoring during pregnancy. 3D ultrasound (US) has unique advantages over 2D scan in covering the whole fetal head and may promote the diagnoses. However, automatically segmenting the whole fetal head in US volumes still pends as an emerging and unsolved problem. Read More

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http://dx.doi.org/10.1016/j.cmpb.2020.105519DOI Listing

Host macrophage response to injectable hydrogels derived from ECM and α-helical peptides.

Acta Biomater 2020 May 21. Epub 2020 May 21.

McGowan Institute for Regenerative Medicine, University of Pittsburgh, 450 Technology Drive, Suite 300, Pittsburgh, PA 15219-3110, USA; Department of Surgery, School of Medicine, University of Pittsburgh, University of Pittsburgh Medical Center Presbyterian Hospital, 200 Lothrop Street, Pittsburgh, PA 15213, USA; Department of Bioengineering, University of Pittsburgh, 3700 O'Hara Street, Pittsburgh, PA, 15261, USA.

Tissue engineering materials play a key role in how closely the complex architectural and functional characteristics of native healthy tissue can be replicated. Traditional natural and synthetic materials are superseded by bespoke materials that cross the boundary between these two categories. Here we present hydrogels that are derived from decellularised extracellular matrix and those that are synthesised from de novo α-helical peptides. Read More

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http://dx.doi.org/10.1016/j.actbio.2020.05.022DOI Listing

Salivary lubricity (ex vivo) enhances upon moderate exercise: A pilot study.

Arch Oral Biol 2020 May 7;116:104743. Epub 2020 May 7.

Food Colloids and Bioprocessing Group, School of Food Science and Nutrition, Faculty of Environment, University of Leeds, Leeds, LS2 9JT, UK. Electronic address:

Objective: This study sought to examine the effects of moderate intensity exercise on lubrication performance of saliva. We hypothesized that exercise would result in enhanced salivary lubricity by direct sympathetic stimulation of the salivary proteins.

Study Design: In total, 11 healthy young pre-menopausal female participants (mean age: 24. Read More

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http://dx.doi.org/10.1016/j.archoralbio.2020.104743DOI Listing

WGAN domain adaptation for the joint optic disc-and-cup segmentation in fundus images.

Int J Comput Assist Radiol Surg 2020 May 22. Epub 2020 May 22.

Petuum Inc., Pittsburgh, PA, 15222, USA.

Purpose: The cup-to-disc ratio (CDR), a clinical metric of the relative size of the optic cup to the optic disc, is a key indicator of glaucoma, a chronic eye disease leading to loss of vision. CDR can be measured from fundus images through the segmentation of optic disc and optic cup . Deep convolutional networks have been proposed to achieve biomedical image segmentation with less time and more accuracy, but requires large amounts of annotated training data on a target domain, which is often unavailable. Read More

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http://dx.doi.org/10.1007/s11548-020-02144-9DOI Listing

Variation of Microbial Diversity in Catastrophic Oil Spill Area in Marine Ecosystem and Hydrocarbon Degradation of UCMs (Unresolved Complex Mixtures) by Marine Indigenous Bacteria.

Appl Biochem Biotechnol 2020 May 23. Epub 2020 May 23.

Department of Earth and Environmental Sciences, National Chung Cheng University, 168 University Road, Ming-Shung, Chiayi County, 62102, Taiwan.

The study targeted an assessment of microbial diversity during oil spill in the marine ecosystem (Kaohsiung port, Taiwan) and screened dominant indigenous bacteria for oil degradation, as well as UCM weathering. DO was detected lower and TDS/conductivity was observed higher in oil-spilled area, compared to the control, where a significant correlation (R = 1; P < 0.0001) was noticed between DO and TDS. Read More

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http://dx.doi.org/10.1007/s12010-020-03335-5DOI Listing
May 2020
1.735 Impact Factor

A Report On Fluctuating Free Convection Flow Of Heat Absorbing Viscoelastic Dusty Fluid Past In A Horizontal Channel With MHD Effect.

Sci Rep 2020 May 22;10(1):8523. Epub 2020 May 22.

Department of Mathematics, College of Arts and Science, Prince Sattam bin Abdulaziz University, Wadi Al-Dawaser, 11991, Saudi Arabia.

The free convective unsteady fluctuating, MHD flow of electrically conducting viscoelastic dusty fluid in a channel-driven with the impact of oscillating pressure gradient and the motion of the upper plate has been studied in this article. The noteworthy heat generation/absorption has also taken into account, the heat generation established the mechanism of heat transfer by both the momentum of fluid and the motion of dust particle and absorption of heat by the dust particle is because of conduction. The coupled governing partial differential equations are reduced to the ordinary differential equation through the assumed periodic solutions. Read More

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http://dx.doi.org/10.1038/s41598-020-65252-1DOI Listing

Effect of SWCNT and MWCNT on the flow of micropolar hybrid nanofluid over a curved stretching surface with induced magnetic field.

Sci Rep 2020 May 22;10(1):8488. Epub 2020 May 22.

Mathematics and its Applications in Life Sciences Research Group, Ton Duc Thang University, Ho Chi Minh City, Vietnam.

We considered the magnetized micro polar fluid with hybrid nanomaterial flow over a curved stretching surface. We discussed the effects of single wall carbon nanotube and multiwall carbon nanotube with base fluids (water and propylene glycol). Under the flow assumptions, we developed the mathematical model and applied the boundary layer approximations to reduce the system of partial differential equations. Read More

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http://dx.doi.org/10.1038/s41598-020-65278-5DOI Listing

DCU-Net: Multi-scale U-Net for brain tumor segmentation.

J Xray Sci Technol 2020 May 16. Epub 2020 May 16.

College of Information Science and Technology, Henan University of Technology, Zhengzhou, China.

Background: Brain tumor segmentation plays an important role in assisting diagnosis of disease, treatment plan planning, and surgical navigation.

Objective: This study aims to improve the accuracy of tumor boundary segmentation using the multi-scale U-Net network.

Methods: In this study, a novel U-Net with dilated convolution (DCU-Net) structure is proposed for brain tumor segmentation based on the classic U-Net structure. Read More

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http://dx.doi.org/10.3233/XST-200650DOI Listing

Patterning and mechanics of somite boundaries in zebrafish embryos.

Semin Cell Dev Biol 2020 May 19. Epub 2020 May 19.

École Polytechnique Fédérale Lausanne, CH-1015 Lausanne, Switzerland. Electronic address:

The body axis of vertebrates is subdivided into repetitive compartments called somites, which give rise primarily to the segmented architecture of the musculoskeletal system in the adult body. Somites form in a sequential and rhythmic manner in embryos and a physical boundary separates each somite from the rest of the unsegmented tissue and adjoining somites. Precise positioning of somite boundaries and determination of boundary cell fate in a select group of cells is thought to be driven by gene expression patterns and morphogen gradients. Read More

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http://dx.doi.org/10.1016/j.semcdb.2020.04.014DOI Listing