keyword
https://read.qxmd.com/read/38639434/interpretation-of-hydrogen-deuterium-exchange-mass-spectrometry
#21
REVIEW
Yoshitomo Hamuro
This paper sheds light on the meaning of hydrogen/deuterium exchange-mass spectrometry (HDX-MS) data. HDX-MS data provide not structural information but dynamic information on an analyte protein. First, the reaction mechanism of backbone amide HDX reaction is considered and the correlation between the parameters from an X-ray crystal structure and the protection factors of HDX reactions of cytochrome c is evaluated. The presence of H-bonds in a protein structure has a strong influence on HDX rates which represent protein dynamics, while the solvent accessibility only weakly affects the HDX rates...
April 19, 2024: Journal of the American Society for Mass Spectrometry
https://read.qxmd.com/read/38639135/metallic-re-3-o-2-with-mixed-valence-states
#22
JOURNAL ARTICLE
Wenjing Li, Fei Li, Xiaohua Zhang, Jinhui Wu, Guochun Yang
Rhenium (Re) shows the richest valence states from +2 to +7 in compounds, but its mixed-valence states are still missing thus far. In this work, we have explored the Re-O phase diagram with a wide range of stoichiometric compositions under high pressure through first-principles structural search calculations. Besides identifying two novel high-pressure phases of ReO2 and ReO3 , we reveal two hitherto unknown Re-rich Re3 O2 and O-rich ReO4 compounds. Re atoms in Re3 O2 show mixed-valence states due to their inequivalent coordination environments, the first example in Re-based compounds...
April 19, 2024: Physical Chemistry Chemical Physics: PCCP
https://read.qxmd.com/read/38638949/insights-into-the-binding-of-buspirone-to-human-serum-albumin-using-multi-spectroscopic-and-molecular-docking-techniques
#23
JOURNAL ARTICLE
Javad Sargolzaei, Elaheh Jalali, Parisa Rajabi
Buspirone is an anxiolytic drug that plays a significant role in managing anxiety disorders and alleviating their symptoms as well. Several techniques were utilized to study the interaction between buspirone and human serum albumin under physiological conditions, including UV-vis absorption spectroscopy, fluorescence emission spectroscopy, circular dichroism, Fourier transform infrared spectroscopy (FT-IR), equilibrium dialysis, and molecular docking. The results of this study demonstrated that buspirone quenched the intrinsic fluorescence of human serum albumin through a mixed mechanism...
April 30, 2024: Heliyon
https://read.qxmd.com/read/38637322/recoverability-and-estimation-of-causal-effects-under-typical-multivariable-missingness-mechanisms
#24
JOURNAL ARTICLE
Jiaxin Zhang, S Ghazaleh Dashti, John B Carlin, Katherine J Lee, Margarita Moreno-Betancur
In the context of missing data, the identifiability or "recoverability" of the average causal effect (ACE) depends not only on the usual causal assumptions but also on missingness assumptions that can be depicted by adding variable-specific missingness indicators to causal diagrams, creating missingness directed acyclic graphs (m-DAGs). Previous research described canonical m-DAGs, representing typical multivariable missingness mechanisms in epidemiological studies, and examined mathematically the recoverability of the ACE in each case...
April 2024: Biometrical Journal. Biometrische Zeitschrift
https://read.qxmd.com/read/38636695/primer-part-1-preparing-a-laboratory-quality-improvement-project
#25
REVIEW
Mary Kathryn Bohn, Roy Augustin, Lucas Chartier, Luke Devine, Samik Doshi, Leanne Ginty, Elliot Lass, Felix Leung, William Mundle, Graeme Nimmo, Alyson Sandy, Kelly Shillington, Amanda Simon, Amanda Steiman, Ahmed Taher, Cindy Tang Friesner, Cristina Zanchetta, Jennifer Taher
Quality in laboratory medicine encompasses multiple components related to total quality management, including quality control (QC), quality assurance (QA), quality indicators, and quality improvement (QI). Together, they contribute to minimizing errors (pre-analytical, analytical, or post-analytical) in clinical service delivery and improving process appropriateness and efficiency. In contrast to static quality benchmarks (QC, QA, quality indicators), the QI paradigm is a continuous approach to systemic process improvement for optimizing patient safety, timeliness, effectiveness, and efficiency...
April 16, 2024: Clinical Biochemistry
https://read.qxmd.com/read/38636126/phase-diagram-of-sio-2-crystallization-upon-rice-husk-combustion-to-control-silica-ash-quality
#26
JOURNAL ARTICLE
Mai-Mari Hirose Carlsen, Yukie Saito
Rice husk (RH), which is an abundant agricultural waste, consists of ca. 20 % silica (SiO2 ·nH2 O). Upon RH combustion, a large amount of silica ash is generated. RH silica is originally amorphous; however, the ash is crystalized depending on the conditions of the combustion. Crystallization of RH occurs at a much lower temperature than that of pure SiO2 due to the eutectic effects of minerals, such as Na and K, that are initially present in RH. Controlling for anti-crystallization is required for expanding the possibility of using RH ash that is abundantly generated by combustion...
April 17, 2024: Waste Management
https://read.qxmd.com/read/38635007/a-longitudinal-mixed-methods-case-study-investigation-of-the-academic-athletic-psychosocial-and-psychological-impacts-of-being-of-a-sport-school-student-athlete
#27
JOURNAL ARTICLE
Ffion Thompson, Fieke Rongen, Ian Cowburn, Kevin Till
BACKGROUND: Sport schools are popular environments for simultaneously delivering education and sport to young people. Previous research suggests sport school involvement to have impact (i.e. the positive/negative, intended/unintended and long/short-term outcomes, results and effects) on student athlete's holistic (i.e. academic, athletic, psychosocial and psychological) development. However, previous research is limited by (1) cross-sectional methods, (2) limited multidimensional assessments, (3) lack of consideration for athlete characteristics (e...
April 18, 2024: Sports Medicine
https://read.qxmd.com/read/38634896/mapping-the-risk-factors-pathogens-and-antibiotic-of-pharyngocutaneous-fistula-in-patients-after-neck-open-surgery
#28
JOURNAL ARTICLE
Weili Kong, Manlin Chen, Hailing Gu, Yinze Han, Yuanzhi Liu, Xiaoyan Xia, Hui Yang
PURPOSE: Current literature lacks consensus on risk factors for pharyngocutaneous fistula (PCF), and empirical antibiotic guidelines for PCF are limited. The aim of this study was to reduce the incidence of PCF and improve antibiotic treatment efficacy for patients with PCF after open neck surgery by analyzing their clinical characteristics, pathogenic bacteria, and antibiotic susceptibility. METHODS: This study was a 13-year single-center retrospective cohort study, including 699 patients who underwent open neck surgery for laryngeal and hypopharyngeal cancer...
April 18, 2024: European Archives of Oto-rhino-laryngology
https://read.qxmd.com/read/38634601/shear-induced-nonequilibrium-patterns-in-lipid-bilayer-membranes-exhibiting-phase-separation
#29
JOURNAL ARTICLE
Tsutomu Hamada, Shino Mizuno, Hiroyuki Kitahata
The nonequilibrium dynamics of a fluid lipid membrane under external stimuli is an important issue that spans disciplines such as soft matter, biophysical chemistry, and interface science. This study investigated the dynamic response of lipid vesicles with order-disorder phase separation, which mimics a plasma membrane heterogeneity, to shear flow. Lipid vesicles were immobilized in a microfluidic chamber, and shear-induced nonequilibrium patterns on the membrane surface were observed by an optical microscope...
April 18, 2024: Langmuir: the ACS Journal of Surfaces and Colloids
https://read.qxmd.com/read/38633686/barriers-faced-by-healthcare-providers-during-home-visits-of-palliative-care-patients-a-qualitative-study
#30
JOURNAL ARTICLE
Priyanga Datchanamourtty, M Rajalakshmi, Kalaiselvan Ganapathy
OBJECTIVES: We, the Department of Community Medicine, have been training healthcare providers for palliative care in the hospital and community setting. There were many difficulties in providing proper palliative care. The objective is to explore the various difficulties faced by Junior Residents, auxiliary nurse and midwife (ANM) and medical social workers (MSWs) during the home visits of palliative care patients and to address those difficulties in future visits. MATERIALS AND METHODS: The study was conducted in our peripheral institutions such as the Rural Health Training Centre and the Urban Health Training Centre among Junior Residents, ANMs and MSWs who had provided palliative care for the patients...
2024: Indian Journal of Palliative Care
https://read.qxmd.com/read/38633639/performance-evaluation-of-nanofluid-based-photovoltaic-thermal-pvt-system-with-regression-analysis
#31
JOURNAL ARTICLE
A K Azad, Salma Parvin, Tahiya Hossain
The recent global energy crisis has shocked Bangladesh's power sectors, and experts recommend using alternative energy sources to conserve natural gas, fossil fuels, and electricity. Numerous investigations on the photovoltaic thermal (PVT) system have been carried out to get the source efficiently. As a result, a parametric evaluation of the PVT system's efficiency in Dhaka, Bangladesh, is investigated numerically using CNT nanofluid as a coolant. The numerical simulation is performed using the Galerkin weighted residual based finite element method...
April 15, 2024: Heliyon
https://read.qxmd.com/read/38633038/effect-of-polymer-concentration-on-the-morphology-of-the-phpmaa-g-pla-graft-copolymer-nanoparticles-produced-by-microfluidics-nanoprecipitation
#32
JOURNAL ARTICLE
Svetlana Lukáš Petrova, Ewa Pavlova, Václav Pokorný, Vladimir Sincari
Successful generation of micelles, vesicles, and/or worms with controllable sizes was achieved through the self-assembly process of the poly[ N -(2-hydroxypropyl)]methacrylamide- g -polylactide (PHPMAA- g -PLA) graft copolymer within a microfluidic channel. A product diagram was created to illustrate various morphologies associated with different polymer concentrations, all while maintaining a constant flow velocity ratio between water and the polymer solution.
April 16, 2024: Nanoscale advances
https://read.qxmd.com/read/38632975/strategies-and-indicators-to-integrate-health-equity-in-health-service-and-delivery-systems-in-high-income-countries-a-scoping-review
#33
JOURNAL ARTICLE
Hilary A T Caldwell, Joshua Yusuf, Cecilia Carrea, Patricia Conrad, Mark Embrett, Katherine Fierlbeck, Mohammad Hajizadeh, Sara F L Kirk, Melissa Rothfus, Tara Sampalli, Sarah Meaghan Sim, Gail Tomblin Murphy, Lane Williams
OBJECTIVE: The objective of this review was to describe how health service and delivery systems in high-income countries define and operationalize health equity. A secondary objective is to identify implementation strategies and indicators being used to integrate and measure health equity. INTRODUCTION: To improve the health of populations, a population health and health equity approach is needed. To date, most work on health equity integration has focused on reducing health inequities within public health, health care delivery, or providers within a health system, but less is known about integration across the health service and delivery system...
April 18, 2024: JBI evidence synthesis
https://read.qxmd.com/read/38632812/topological-phases-in-the-dynamics-of-the-simple-exclusion-process
#34
JOURNAL ARTICLE
Juan P Garrahan, Frank Pollmann
We study the dynamical large deviations of the classical stochastic symmetric simple exclusion process (SSEP) by means of numerical matrix product states. We show that for half filling, long-time trajectories with a large enough imbalance between the number hops in even and odd bonds of the lattice belong to distinct symmetry-protected topological (SPT) phases. Using tensor network techniques, we obtain the large deviation (LD) phase diagram in terms of counting fields conjugate to the dynamical activity and the total hop imbalance...
March 2024: Physical Review. E
https://read.qxmd.com/read/38632803/competition-for-resources-in-an-exclusion-model-with-biased-lane-changing-mechanism
#35
JOURNAL ARTICLE
Ankita Gupta, Arvind Kumar Gupta
The motivation for the proposed work is drawn from the attachment-detachment observed in biological and physical transport processes that entail finite resources. We investigate the influence of limited particle availability on particle dynamics within two parallel totally asymmetric simple exclusion lanes, with one lane incorporating only particle detachment and the other considering particle attachment. We establish a theoretical framework by employing vertical mean-field theory in conjunction with singular perturbation technique...
March 2024: Physical Review. E
https://read.qxmd.com/read/38632782/coexistence-of-distinct-nonuniform-nonequilibrium-steady-states-in-ehrenfest-multiurn-model-on-a-ring
#36
JOURNAL ARTICLE
Chi-Ho Cheng, Pik-Yin Lai
The recently proposed Ehrenfest M-urn model with interactions on a ring is considered as a paradigm model which can exhibit a variety of distinct nonequilibrium steady states. Unlike the previous three-urn model on a ring which consists of a uniform steady state and a nonuniform nonequilibrium steady state, it is found that for even M≥4, an additional nonequilibrium steady state can coexist with the original ones. Detailed analysis reveals that this additional nonequilibrium steady state emerged via a pitchfork bifurcation which cannot occur if M is odd...
March 2024: Physical Review. E
https://read.qxmd.com/read/38632732/theory-of-melting-lines
#37
JOURNAL ARTICLE
K Trachenko
Our understanding of the three basic states of matter (solids, liquids, and gases) is based on temperature and pressure phase diagrams with three phase transition lines: solid-gas, liquid-gas, and solid-liquid lines. There are analytical expressions P(T) for the first two lines derived on a purely general-theoretical thermodynamic basis. In contrast, there exists no similar function for the third, melting, line (ML). Here, we develop a general two-phase theory of MLs and their analytical form. This theory predicts the parabolic form of the MLs for normal melting, relates the MLs to thermal and elastic properties of liquid and solid phases, and quantitatively agrees with experimental MLs in different system types...
March 2024: Physical Review. E
https://read.qxmd.com/read/38632266/re-order-parameter-of-interacting-thermodynamic-magnets
#38
JOURNAL ARTICLE
Byung Cheol Park, Howon Lee, Sang Hyup Oh, Hyun Jun Shin, Young Jai Choi, Taewoo Ha
Phase diagrams of materials are typically based on a static order parameter, but it faces challenges when distinguishing subtle phase changes, such as re-ordering. Here, we report a dynamic nonequilibrium order parameter termed re-order parameter to determine subtle phases and their transitions in interacting magnets. The dynamical precession of magnetization, so-called magnon, premises as a reliable re-order parameter of strong spin-orbit coupled magnets. We employ orthoferrites YFeO3 and its Mn-doped variations, where diverse magnetic phases, including canted antiferromagnetic (Γ4 ) and collinear antiferromagnetic (Γ1 ) states, have been well-established...
April 17, 2024: Nature Communications
https://read.qxmd.com/read/38631060/circulating-blood-b-and-t-lymphocytes-and-severity-of-acute-pancreatitis-a-systematic-review-protocol
#39
JOURNAL ARTICLE
Filipa Malheiro, Margarida Leitão do Nascimento, Luís Miguel Borrego
INTRODUCTION: Acute pancreatitis is an acute inflammatory process of the pancreas with a high prevalence rate and varying degrees of severity that can be potentially life threatening. Much is still unknown about which mechanisms determine the course and severity of acute pancreatitis. The primary objective of this review is to identify the potential association between circulating B and T lymphocytes and the severity of acute pancreatitis. Subgroup analyses will be done according to the severity classification of the Revised Atlanta Classification System as well as according to the distinction between B lymphocytes and T lymphocytes and the severity of acute pancreatitis...
April 1, 2024: Acta Médica Portuguesa
https://read.qxmd.com/read/38629530/-hydrochemical-characteristics-controlling-factors-and-water-quality-evaluation-of-shallow-groundwater-in-tan-lu-fault-zone-%C3%AF-anhui-section%C3%AF
#40
JOURNAL ARTICLE
Hai Liu, Wei Wei, Yang Song, Jie Xu, Zheng-Ting Guan, Jian-Min Huang, Guo-Hong Zhao
To study the hydrochemical characteristics, controlling factors, and groundwater quality of the Tan-Lu fault zone (Anhui section), 86 groundwater samples were taken from the areas surrounding the Tan-Lu fault zone (Anhui section), which included the Jianghuai Wavy Plain, the Yanjiang Hill Plain, and the Dabie Mountains in western Anhui. Descriptive statistics, Piper diagram, Gibbs diagram, ion ratio analysis, saturation index, chloride-alkalinity index, and entropy weight water quality index (EWQI) were used to comprehensively study the hydrochemical characteristics and controlling factors of groundwater and to evaluate its quality...
May 8, 2024: Huan Jing Ke Xue= Huanjing Kexue
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