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chinese Medical Sciences Journal 1994年第1期9卷 29-33页

作者：尹卫东 g.Seghieri c.boni,g,sanna R.Anichinl g.Bartolomei E.Ferrannini correspondingauthor.DepartmentofBiochemistry HengyangMedicalCollegeHunan421001 MetabolismUnitofthec.N.R.InstituteofclinicalPhysiology UniversityofPisaandtheSecondMedicalDivisionoftheGeneralHospitalPistoiaItaly

We studied 14 moderately overweight Typo 2 diabetic patients with essential hypertension in stable metabolic control after a run-in period , and again after 3 months of antihypertensive treatment with the angiotensin-converting enzyme (AcF) inhibitor captopril. glucose tolerance was tested with a 75g oral glucose load (OgTT) and insulin sensitivity was measured by the insulin suppression test (IST) while dietary and drug treatment of the hyperglycemia was maintained constant. In the whole group. mean blood pressure (MBP) fell progressively over 3months from a baseline value of 123± 3 mmHg (1 mmHg= 0. 133 kpa) to a final value of 115± 2 mmHg(Pg plasma glucose, insulin, free fatty acid (FFA). potassium, and glycosylated hemoglobin concentrations were unchanged from baseline. There were no significant differences in glucose tolerance and insulin sensitivity between pre- and post-trearment values. Neither endogenous (oral glucose) nor exogenous (IST) insulin caused any change in plasma potassium concentration. This resistance to the hypokalemic action of insulin was not affected by captopril.

关键词： glucose tolerance test hypertension AcE inhibition

Performance evaluation of the incorporation of different wire meshes in between perforated current collectors and membrane electrode assembly on the Passive Direct methanol fuel cell

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chinese Journal of chemical Engineering 2021年第4期34卷 360-367页

作者： Muralikrishna boni S.Srinivasa Rao g.Naga Srinivasulu Department of Mechanical Engineering National Institute of Technology WarangalWarangalTelanganaIndia

Passive Direct methanol fuel cells(DMFc)are more suitable for charging small capacity electronic *** passive DMFc,the fuel and oxidant are supplied by diffusion and natural convection process on the anode and cathode sides *** collectors(cc)play a vital importance in fuel cell *** paper presents the combined impact of perforated and wire mesh current collectors(WMcc)on passive DMFc *** types of open ratios of perforated current collectors(Pcc),such as 45.40%,55.40%and 63.40%and two types of wire mesh current collectors with open ratios of 38.70%and 45.40%were chosen for the experimental work.A combination of TaguchiL9 rule is considered.A combination of three Pcc and two WMcc on both anode and cathode was *** concentration was varied from 1 mol·L^(-1)-5 mol·L^(-1)for nine combinations of Pcc and *** the experimental results,it is noticed that the combination of Pcc and WMcc with an open ratio of 55.40%and 38.70%incorporated passive DMFc produced peak power density at 5 mol·L^(-1)of methanol *** passive DMFc performance was evaluated in terms of maximum power density and maximum current *** combined current collectors of Pcc and WMcc open ratios of 55.40%+38.70%have more stable voltage than single Pcc of open ratio 63.40%at 4 mol·L^(-1)of methanol concentration.

关键词： Passive DMFc Perforated current collector Wire mesh current collector Methanol concentration Fuel cell performance

An SPH Framework for Earthquake-Induced Liquefaction Hazard Assessment of geotechnical Structures

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computer Modeling in Engineering & Sciences 2025年第1期142卷 251-277页

作者： Sourabh Mhaski g.V.Ramana Department of civil Engineering Indian Institute of Technology DelhiNew Delhi110016India

Earthquake-induced soil liquefaction poses significant risks to the stability of geotechnical structures *** understanding of the liquefaction triggering,and the post-failure large deformation behaviour is essential for designing resilient *** present study develops a Smoothed Particle Hydrodynamics(SPH)framework for earthquake-induced liquefaction hazard assessment of geotechnical *** coupled flowdeformation behaviour of soils subjected to cyclic loading is described using the PM4Sand model implemented in a three-phase,single-layer SPH framework.A staggered discretisation scheme based on the stress particle SPH approach is adopted to minimise numerical inaccuracies caused by zero-energy modes and tensile ***,non-reflecting boundary conditions for seismic analysis of semi-infinite soil domains using the SPH method are *** numerical framework is employed for the analysis of cyclic direct simple shear test,seismic analysis of a level ground site,and liquefaction-induced failure of the Lower San Fernando *** agreement for liquefaction triggering and post-failure behaviour demonstrates that the SPH framework can be utilised to assess the effect of seismic loading on field-scale geotechnical *** present study also serves as the basis for future advancements of the SPH method for applications related to earthquake geotechnical engineering.

关键词： Earthquake seismic liquefaction stress particle PM4Sand smoothed particle hydrodynamics(SPH)

Status and prospects for symmetric organic redox flow batteries

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Journal of Energy chemistry 2025年第1期100卷 125-143页

作者： Md Al Raihan c.Adam Dyker Department of chemistry University of New Brunswick

As environmental concerns from fossil fuel consumption intensify, large-scale energy storage becomes imperative for the integration of renewable sources like wind, hydro, and solar with the electrical *** flow batteries, particularly those employing organic molecules, are positioned as a key technology for this purpose. This review explores the growing field of symmetric organic redox flow batteries(ORFBs) within this context. Unlike traditional asymmetric designs based on unique active materials for each electrode, symmetric ORFBs involve a single bipolar species for both electrodes. This review highlights the benefits of a symmetric design, and categorizes five distinct classes of organic bipolar molecules used in both aqueous and non-aqueous solvents. By providing a comprehensive overview of their cell cycling and performance characteristics, the strengths and weaknesses of the diverse categories of bipolar molecules are highlighted for both solvent systems, as are opportunities for future development. This should guide new research directions and advance the development of practical symmetric ORFBs.

关键词： Redox flow battery Symmetric battery Organic battery Aqueous electrolyte Non-aqueous electrolyte

ceria on alumina support for catalytic pyrolysis of Pavlova sp. microalgae to high-quality bio-oils

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Journal of Energy chemistry 2018年第3期27卷 874-882页

作者： Tevfik Aysu Javier Fermoso Aimaro sanna Institute of Mechanical Process and Energy Engineering (IMPEE) Heriot-Watt University Department of chemistry Faculty of Education Yuzuncu Yil University

In this work,we report for the first time the in-situ catalytic pyrolysis of Pavlova ***,which has been performed in a fixed-bed reactor in presence of ce/Al2O3-based *** effects of pyrolysis parameters,such as temperature and catalyst were studied on the products yield distribution and biooil composition,among *** showed that all catalysts increased the bio-oil yield with respect to the non-catalytic runs and reduced the O/c ratio from 0.69（Pavlova sp.）to 0.1–0.15,which is close to that of crude *** terms of bio-oil oxygen content,Mg ce/Al2O3presented the best performance with a reduction of more than 30%,from 14.1 to 9.8 wt%,of the oxygen concentration in comparison with thermal ***,Ni ce/Al2O3gave rise to the highest aliphatics/aromatics *** elemental and gas analysis indicates that N was partially removed from the catalytic bio-oils in the gas phase in forms of NH3and HcN.

关键词： Bio-oil Pavlova sp. Pyrolysis Deoxygenation catalyst ceria

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信息安全

安防科技 2003年第2期 61-62页

作者： William c.boni ,和平

长久以来,许多公司面临着这样一个问题:如何使公司的机密信息得到有效的保护?这需要建立一个强有力的机密信息保护程序,该程序包括许多方面的内容,但是其中最重要的一点是各方协调一致来防止此类事件的发生。国外某跨国公司在这方面给... 详细信息

长久以来,许多公司面临着这样一个问题:如何使公司的机密信息得到有效的保护?这需要建立一个强有力的机密信息保护程序,该程序包括许多方面的内容,但是其中最重要的一点是各方协调一致来防止此类事件的发生。国外某跨国公司在这方面给大家做出了榜样。它的做法是:建立一个信息保护小组来确认及核查所有机密信息的保护政策。

关键词：机密信息所有程序信息安全网络培训分销商数据库数据库系统优先顺序部门小组计算机

Stepping up after spinal cord injury:negotiating an obstacle during walking

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Neural Regeneration Research 2025年第7期20卷 1919-1929页

作者： Alain Frigon charly g.Lecomte Department of Pharmacology-Physiology Faculty of Medicine and Health SciencesUniversitéde SherbrookeCentre de recherche du Centre Hospitalier Universitaire de SherbrookeSherbrookeQCCanada

Every day walking consists of frequent voluntary modifications in the gait pattern to negotiate *** spinal cord injury,stepping over an obstacle becomes *** over an obstacle requires sensorimotor transformations in several structures of the brain,including the parietal cortex,premotor cortex,and motor *** information and planning are transformed into motor commands,which are sent from the motor cortex to spinal neuronal circuits to alter limb trajectory,coordinate the limbs,and maintain *** spinal cord injury,bidirectional communication between the brain and spinal cord is disrupted and animals,including humans,fail to voluntarily modify limb trajectory to step over an ***,in this review,we discuss the neuromechanical control of stepping over an obstacle,why it fails after spinal cord injury,and how it recovers to a certain extent.

关键词： biomechanics locomotion neurophysiology obstacle negotiation spinal cord injury

Projective Hilbert modules and sequential approximations

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Science china Mathematics 2025年第1期 137-168页

作者： Lawrence g.Brown Huaxin Lin Department of Mathematics Purdue University Department of Mathematics East China Normal University Department of Mathematics University of Oregon Shanghai Institute for Mathematics and Interdisciplinary Sciences

We show that when A is a separable c*-algebra,every countably generated Hilbert A-module is projective（with bounded module maps as morphisms）.We also study the approximate extensions of bounded module *** the case where A is a σ-unital simple c*-algebra with strict comparison,and every strictly positive lower semicontinuous affine function on quasitraces can be realized as the rank of an element in the cuntz semigroup,we show that the cuntz semigroup is equivalent to unitarily equivalent classes of countably generated Hilbert A-modules if and only if A has stable rank one.

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Lignin Biosynthesis Studies in Plant Tissue cultures

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Journal of Integrative Plant Biology 2010年第2期52卷 176-185页

作者： Anna Krknen sanna Koutaniemi Department of Applied Biology 00014 University of HelsinkiFinland MTT Agrifood Research Finland 92400 RuukkiFinland Department of Applied chemistry and Microbiology 00014 University of HelsinkiFinland

Lignin, a phenolic polymer abundant in cell walls of certain cell types, has given challenges to scientists studying its structure or biosynthesis. In plants lignified tissues are distributed between other, non-lignified tissues, characterization of native lignin in the cell wall has been difficult due to the highly cross-linked nature of the wall components. Model systems, like plant tissue cultures with tracheary element differentiation or extracellular lignin formation, have provided useful information related to lignin structure and several aspects of lignin formation. For example, many enzyme activities in the phenylpropanoid pathway have been first identified in tissue cultures. This review focuses on studies where the use of plant tissue cultures has been advantageous in structural and biosynthesis studies of lignin, and discusses the validity of tissue cultures as models for lignin biosynthesis.

关键词： cell Lignin Biosynthesis Studies in Plant Tissue cultures

Acquired sensorineural hearing loss,oxidative stress,and microRNAs

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Neural Regeneration Research 2025年第9期20卷 2513-2519页

作者： Desmond A.Nunez Ru c.guo Division of Otolaryngology–Head&Neck Surgery Department of SurgeryFaculty of MedicineThe University of British ColumbiaVancouverBCCanada Division of Otolaryngology–Head&Neck Surgery Gordon&Leslie Diamond Health Care CentreVancouver General HospitalVancouverBCCanada Faculty of Medicine–The University of British columbia VancouverBCCanada

Hearing loss is the third leading cause of human ***-related hearing loss,one type of acquired sensorineural hearing loss,is largely responsible for this escalating global health ***-induced,ototoxic,and idiopathic sudden sensorineural are other less common types of acquired hearing *** etiology of these conditions is complex and multi-fa ctorial involving an interplay of genetic and environmental *** stress has recently been proposed as a likely linking cause in most types of acquired sensorineural hearing *** non-coding RNA sequences known as microRNAs(miRNAs)have increasingly been shown to play a role in cellular hypoxia and oxidative stress responses including promoting an apoptotic *** hair cell death is a central histopathological finding in sensorineural hearing *** these cells do not regenerate in humans,it underlies the irreversibility of human age-related hearing *** EMBASE,Ovid MEDLINE,Web of Science core collection,and *** databases over the period August 1,2018 to July 31,2023 were searched with"hearing loss,""hypoxamiRs,""hypoxia,""microRNAs,""ischemia,"and"oxidative stress"text words for English language primary study publications or registered clinical *** red clinical trials known to the senior author we re also assessed.A total of 222studies were thus *** excluding duplicates,editorials,retra ctions,secondary research studies,and non-English language articles,39 primary studies and clinical trials underwent full-text *** resulted in 11 animal,in vitro,and/or human subject journal articles and 8 registered clinical trial database entries which form the basis of this narrative *** miR-34a and miR-29b levels increase with age in *** miRNAs were demonstrated in human neuroblastoma and murine cochlear cell lines to target Sirtuin 1/peroxisome proliferato r-activated receptor gamma coactivator-1-alpha(SIRT1/P gc-1α),SIRT

关键词： hearing loss hypoxia microRNAs oxidative stress sensorineural