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Clarification on Polarity of Bipolar Electric Field Solitary Structures in Space Plasmas with Satellite Observation

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Chinese Physics Letters 2011年第2期28卷 164-167页

作者： M.n.S.Qureshi SHI Jian-Kui Klaus Torkar LIU Zhen-Xing department of Physics GC UniversityLahore 54000Pakistan State Key Laboratory of Space Weather Centre for Space Science and Applied Research(CSSAR)Chinese Academy of SciencesBeijing 100190 Space Research Institute Austrian Academy of SciencesA-8042GrazAustria

The bipolar electric field solitary(EFS)structures observed frequently in space plasmas by satellites have two different polarities,first positive electric field peak then negative(i.e.,positive/negative)and first negative then positive peak(i.e.,negative/positive).We provide the physical explanation on the polarity of observed bipolar EFS structures with an electrostatic ion fluid *** results show that if initial electric field𝐸E_(0)>0,the polarity of the bipolar EFS structure will be positive/negative;and if𝐸E_(0)negative/***,for a fixed polarity of the EFS,either positive/negative or negative/positive,if the satellite is located at the positive side of the EFS,the observed polarity should be positive/negative,if the satellite is located at the negative side of the EFS,the observed polarity should be negative/***,we provide a method to clarify the natural polarity of the EFS with observed polarity by *** results are significant to understand the physical process in space plasma with the satellite observation.

关键词： Observation polarity bipolar

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大洋环境火山成因锰矿床的最新分类和模式

中国锰业 1990年第4期8卷 52-58页

作者： d.L.Mosier n.J.Page 沈承珩

介绍4种不同类型火山成因锰矿床的主要特征及有关的统计数字、成矿模式,并分析了它们对资源评价和找矿勘探的意义。

关键词：锰矿分类类型

delayed spontaneous reversibility of left bundle branch block in non-ischemic cardiomyopathy: a case report

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Journal of Geriatric Cardiology 2020年第3期17卷 164-168页

作者： Marcus VH Carvalho Priscila C Kroll Vinicius n Carvalho department of Cardiothoracic Medicine JundiaíMedical SchoolJundiaíSPBrazil Transplant Hospital E J Zerbini Sao PauloSPBrazil Municipal Hospital Mario Gatti CampinasSao PauloSPBrazil

Left bundle branch block(LBBB)causes a delay in left ventricular contraction with an unsynchronized ventricular *** is an independent determinant of morbi-mortality mainly when associated with cardiomyopathy and left ventricular dysfunction.[1] LBBB due to non-ischemic cardiomyopathy is considered *** irreversibility occurs because LBBB and cardiomyopathy act in a synergic manner in order to maintain both ***,there are a few reports in the literature showing that some patients have had an improvement in cardiac function with normalization of QRS and have experienced a reverse remodelling with pharmacological therapy only.[2–4]

关键词： desynchronization Heart failure Left bundle branch block Reverse remodelling

Finite cell method compared to h-version finite element method for elasto-plastic problems

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Applied Mathematics and Mechanics(English Edition) 2014年第10期35卷 1239-1248页

作者： A.ABEdIAn J.PARVIZIAn A.dSTER E.RAnK department of Mechanical Engineering Daneshpajoohan Higher Education Institute department of Mechanical Engineering Isfahan University of Technology numerische Strukturanalyse mit Anwendungen in der Schiffstechnik (M-10) Technische Universitt Hamburg-Harburg Lehrstuhl fr Computation in Engineering Fakultt fr Bauingenieur-und Vermessungswesen Technische Universitt Mnchen

The finite cell method （FCM） combines the high-order finite element method （FEM） with the fictitious domain approach for the purpose of simple meshing. In the present study, the FCM is used to the Prandtl-Reuss flow theory of plasticity, and the results are compared with the h-version finite element method （h-FEM）. The numerical results show that the FCM is more efficient compared to the h-FEM for elasto-plastic problems, although the mesh does not conform to the boundary. It is also demonstrated that the FCM performs well for elasto-plastic loading and unloading.

关键词： finite cell method (FCM) h-version finite element method (h-FEM),Prandtl-Reuss quadtree octree

Predisposing factors’effects on mortality of oak (Quercus) and hickory (Carya) species in mature forests undergoing mesophication in Appalachian Ohio

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Forest Ecosystems 2021年第1期8卷 81-94页

作者： don C.Radcliffe david M.Hix Stephen n.Matthews School of Environment and natural Resources The Ohio State University2021 Coffey RoadColumbus OH 43210USA School of Environmental and Forest Sciences University of WashingtonBox 352100Seattle WA 98195-2100USA

Background:Mature oak(Quercus spp.)and hickory(Carya spp.)trees are gradually being replaced by more shadetolerant tree species across the eastern U.S.,likely due to fire suppression and increased *** and hickories are highly valuable to wildlife;therefore,studying their mortality patterns can provide information on the longevity of habitat quality for many animal *** mortality has most often been studied following large oak decline events,but background mortality rates in forests with aging oak and hickory canopies warrant equal attention,especially in the context of widespread oak and hickory regeneration ***:We studied background mortality rates of five oak and one hickory species over a 23–25 year time period(1993–1995 to 2018),using 821/20th hectare permanent plots on the Marietta Unit of the Wayne national Forest in southeastern *** calculated mortality rates based on remeasurement of individual trees for white oak(Quercus alba),chestnut oak(Quercus montana),northern red oak(Quercus rubra),black oak(Quercus velutina),scarlet oak(Quercus coccinea),and pignut hickory(Carya glabra).For each of these species other than scarlet oak,we also modeled the relationships of mortality probability with a priori topographic,soil,stand structural,and individual tree covariates,using a mixed-effects logistic regression ***:The species with the highest mortality rate was scarlet oak(61.3%),followed by northern red oak(41.4%),black oak(26.7%),pignut hickory(23.9%),white oak(23.4%),and chestnut oak(19.1%).In our models,northern red oak mortality was associated with more mesic slope positions,shallower solums,more acidic soils,and older stand *** hickory and chestnut oak mortality rates were associated with higher basal areas on the plot,while white oak mortality showed the opposite ***:Our data suggest that red oak subgenus trees in mature forests of our area will become increasingly uncommon relative t

关键词： Mortality Quercus Carya Mesophication Wildlife habitat

Altered physiology of gastrointestinal vagal afferents following neurotrauma

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neural Regeneration Research 2021年第2期16卷 254-263页

作者： Emily n.Blanke Gregory M.Holmes Emily M.Besecker department of Health Sciences Gettysburg CollegeGettysburgPAUSA department of neural and Behavioral Sciences Penn State University College of MedicineHersheyPAUSA

The adaptability of the central nervous system has been revealed in several model *** particular interest to central nervous system-injured individuals is the ability for neural components to be modified for regain of *** both types of neurotrauma,traumatic brain injury and spinal cord injury,the primary parasympathetic control to the gastrointestinal tract,the vagus nerve,remains anatomically ***,individuals with traumatic brain injury or spinal cord injury are highly susceptible to gastrointestinal *** gastrointestinal dysfunctions attribute to higher morbidity and mortality following traumatic brain injury and spinal cord *** the vagal efferent output remains capable of eliciting motor responses following injury,evidence suggests impairment of the vagal *** sensory input drives motor output,this review will discuss the normal and altered anatomy and physiology of the gastrointestinal vagal afferents to better understand the contributions of vagal afferent plasticity following neurotrauma.

关键词： gastrointestinal functions microbiome neurotrauma nodose ganglia sensory neuropathy spinal cord injury traumatic brain injury vagal afferents visceral reflexes

The importance of grain and cut-off size in shaping tree beta diversity along an elevational gradient in the northwest of Colombia

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Forest Ecosystems 2020年第1期7卷 14-25页

作者： Johanna Andrea Martínez-Villa Sebastián González-Caro álvaro duque departamento de Ciencias Forestales Universidad Nacional de Colombia sede MedellínCra.65#59a-110MedellínColombia département des Sciences Biologiques Universitédu QuébecàMontréal141Avenue du Président-KennedyMontrealCanada

Background:Species turnover(β-diversity)along elevational gradients is one of the most important concepts in plant ***,there is a lack of consensus about the main driving mechanisms of treeβ-diversity at local scales in very diverse ecosystems(e.g.,Andean mountains),as well as how the sampling effect can alterβ-diversity ***,it has been hypothesized that patterns of change inβ-diversity at local scales along elevational gradients are driven by sampling effects stemming from differences in the size of the species pool rather than by underlying community assembly ***,we aim to evaluate the relative extent to which sampling effects,such as species pool size,grain size,and tree size cut-off,determine species sorting,and thus,the variability ofβ-diversity at local scales along elevational gradients in the northwest of ***:Using 151-ha permanent plots spread out along a 3000m elevational gradient,we used standardizedβ-deviation to assess the extent to which either sampling effects or the community assembly mechanisms determine the changes in species composition at local ***β-deviation was measured as the difference between the observed and nullβ-diversity divided by the standard deviation of the nullβ-*** found that the magnitude of change in localβ-deviation along the elevational gradient was significant and dependent on the employed spatial grain size and tree size ***,β-deviation increased with elevation in all sampling designs,which suggests that underlying community assembly mechanisms play a key role in shaping localβ-diversity along the elevational ***:Our findings suggest that grain size enlargement and the inclusion of trees with small diameters will improve our ability to quantify the extent to which the community assembly mechanisms shape patterns ofβ-diversity along elevational ***,we emphasize the scale-dependent nature of the assessment o

关键词： Andean forests null models Species pool Species sorting Sampling effect

Gasdermin d in pyroptosis

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Acta Pharmaceutica Sinica B 2021年第9期11卷 2768-2782页

作者： Brandon E.Burdette Ashley n.Esparza Hua Zhu Shanzhi Wang Biology department University of Arkansas at Little RockAR 72204USA department of Surgery the Ohio State University Wexner Medical CenterOH 43210USA

Pyroptosis is the process of inflammatory cell *** primary function of pyroptosis is to induce strong inflammatory responses that defend the host against microbe *** pyroptosis,however,leads to several inflammatory diseases,including sepsis and autoimmune *** can be canonical or *** microbe infection,the canonical pathway responds to pathogen-associated molecular patterns(PAMPs) and damage-associated molecular patterns(dAMPs),while the noncanonical pathway responds to intracellular lipopolysaccharides(LPS) of Gram-negative *** last step of pyroptosis requires the cleavage of gasdermin d(Gsdmd) at d275(numbering after human GSdMd) into n-and C-termini by caspase 1 in the canonical pathway and caspase 4/5/11(caspase 4/5 in humans,caspase 11 in mice) in the noncanonical *** cleavage,the n-terminus of Gsdmd(Gsdmd-n) forms a transmembrane pore that releases cytokines such as IL-1β and IL-18 and disturbs the regulation of ions and water,eventually resulting in strong inflammation and cell *** Gsdmd is the effector of pyroptosis,promising inhibitors of Gsdmd have been developed for inflammatory *** review will focus on the roles of Gsdmd during pyroptosis and in diseases.

关键词： Pyroptosis Inflammasome Caspase Gasdermin Sepsis Inflammation Pathogen-associated molecular patterns(PAMPs) damage-associated molecular patterns(dAMPs)

Mutated trimeric RBd vaccines:a platform against variants of concern

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Signal Transduction and Targeted Therapy 2023年第5期8卷 2038-2040页

作者： Belén Aparicio Juan J.Lasarte Pablo Sarobe Programa de Inmunología e Inmunoterapia Centro de Investigación Médica Aplicada(CIMACCUN)Universidad de NavarraPamplona31008Spain Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y digestivas(CIBEREHd) Pamplona31008Spain IdiSnA Instituto de Investigación Sanitaria de NavarraPamplona31008Spain

He et *** reported in nature Communications1 the development of a protein vaccine against SASR-CoV-2 Omicron variant consisting of a trimer of the spike protein receptor-binding domain(RBd)of the delta variant fused to heptad-repeat sequences 1 and *** vaccine induced broad-spectrum neutralizing antibodies and fully protected mice and non-human primates against challenge with live delta and Omicron virus.

关键词： vaccine vaccines