检索结果-南通市图书馆

Lovastatin as a supplement to mitigate rumen methanogenesis:an overview

Journal of Animal Science and Biotechnology 2022年第2期13卷 353-364页

作者： Amaury Ábrego-Gacía Héctor M.Poggi-Varaldo Vania Robles-González teresa ponce-noyola Graciano Calva-Calva Elvira Ríos-Leal Daniel Estrada-Bárcenas Alfredo Mendoza-Vargas Department of Biotechnology and Bioengineering CINVESTAV-IPNP.O.Box 17-74007000 Mexico CityMexico Environmental Biotechnology and Renewable Energies Group CINVESTAV-IPNP.O.Box 17-74007000 Mexico CityMexico Instituto de Hidrología Universidad Tecnológica de la MixtecaOaxaca 69000 Huajuapan de LeónMexico National Collection of Microbial and Cellular Cultures CINVESTAV-IPNP.O.Box17-74007000 Mexico CityMexico Unidad de Secuenciación e Identificación de Polimorfismos Instituto Nacional de Medicina Genómica14610 Mexico CityMexico

Methane from enteric fermentation is the gas with the greatest environmental impact emitted by ***(Lv)addition to feedstocks could be a strategy to mitigate rumen methane emissions via decreasing the population of methanogenic archaea(MA).Thus,this paper provides the first overview of the effects of Lv supplementation,focusing on the inhibition of methane production,rumen microbiota,and ruminal *** indicated that Lv treatment had a strong anti-methanogenic effect on pure strains of ***,there are uncertainties from in vitro rumen fermentation trials with complex substrates and rumen ***-state fermentation(SSF)has emerged as a cost-effective option to produce *** this way,SSF of agricultural residues as an Lv-carrier supplement in sheep and goats demonstrated a consistent decrease in ruminal methane *** experimental evidence for in vitro conditions showed that Lv did not affect the volatile fatty acids(VFA).However,in vivo experiments demonstrated that the production of VFA was *** did not negatively affect the digestibility of dry matter during in vitro and in vivo methods,and there is even evidence that it can induce an increase in *** the rumen microbiota,populations of MA were reduced,and no differences were detected in alpha and beta diversity associated with Lv ***,some changes in the relative abundance of the microbiota were *** studies are recommended on:(i)Lv biodegradation products and stability,as well as its adsorption onto the solid matter in the rumen,to gain more insight on the“available”or effective Lv concentration;and(ii)to determine whether the effect of Lv on ruminal fermentation also depends on the feed composition and different ruminants.

关键词： Fermentation Lovastatin Methanogenesis Microbiota Rumen

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Dysregulation of the PD-1/PD-L1 pathway contributes to the pathogenesis of celiac disease

引用

Cellular & Molecular Immunology 2019年第9期16卷 777-779页

作者： Candelaria ponce de Leon Miguel Angel Lopez-Casado Pedro Lorite teresa Palomeque Maria Isabel Torres Department of Experimental Biology University of JaenJaenSpain Department of Pediatrics Gastroenterology Hospital Virgen de las NievesGranadaSpain

In this study,we focus on the alteration of the programmed cell death 1(PD-1)/PD-L1 pathway in celiac *** discuss the diverse roles of the PD-1 pathway in regulating immune responses and how this knowledge can improve celiac disease(CD)*** PD-1 and PD-L1 levels in the serum and in intestinal biopsies of CD patients may be relevant to the determination of a possible correlation between markers of the autoimmune response,inflammation,and disease activity.

关键词： celiac pathogenesis inflammation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

On the effect of pitch and yaw angles in oblique impacts of smallcaliber projectiles

引用

Defence Technology（防务技术） 2024年第1期31卷 73-94页

作者： teresa Fras French-German Research Institute of Saint-Louis(ISL) Saint-LouisFrance

A terminal ballistic analysis of the effects of 7.62 mm × 51 AP P80 rounds on inclined high-strength armor steel plates is the focus of the presented *** findings of an instrumented ballistic testing combined with 3D advanced numerical simulations performed using the IMPETUS Afea? software yielded the *** experimental verification proved that slight differences in the pitch-andyaw angles of a projectile upon an impact caused different damage types to the projectile’s *** residual velocities predicted numerically were close to the experimental values and the calculated core deviations were in satisfactory agreement with the experimental *** extended matrix of the core deviation angles with combinations of pitch-and-yaw upon impact angles was subsequently built on the basis of the numerical *** presented experimental and numerical investigation examined thoroughly the influence of the initial pitch and yaw angles on the after-perforation projectile’s performance.

关键词： Ballistic impact Small-caliber projectile Pitch and yaw impact angles Shadowgraphy IMPETUS Afea Numerical simulations

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Differential response of injured and healthy retinas to syngeneic and allogeneic transplantation of a clonal cell line of immortalized olfactory ensheathing glia:a double-edged sword

引用

Neural Regeneration Research 2025年第8期20卷 2395-2407页

作者： María Norte-Muñoz María Portela-Lomba Paloma Sobrado-Calvo Diana Simón Johnny Di Pierdomenico Alejandro Gallego-Ortega Mar Pérez JoséMCabrera-Maqueda Javier Sierra Manuel Vidal-Sanz María teresa Moreno-Flores Marta Agudo-Barriuso Grupo de Investigación Oftalmología Experimental Departamento de OftalmologíaOptometríaOtorrinolaringología y Anatomía PatológicaFacultad de MedicinaUniversidad de MurciaInstituto Murciano de Investigación Biosanitaria(IMIB)Campus de Ciencias de la SaludMurciaSpain Experimental Sciences Faculty Universidad Francisco de VitoriaPozuelo de AlarcónMadridSpain Anatomy Histology and Neuroscience DepartmentMedicine FacultyUniversidad Autónoma de MadridMadridSpain Center of Neuroimmunology Service of NeurologyLaboratory of Advanced Imaging in Neuroimmunological DiseasesHospital Clínic of BarcelonaInstitut d’Investigacions Biomèdiques August Pi i Sunyer(IDIBAPS)and Universitat de BarcelonaBarcelonaSpain Medicine Faculty Universidad Francisco de VitoriaPozuelo de AlarcónMadridSpain

Olfactory ensheathing glia promote axonal regeneration in the mammalian central nervous system,including retinal ganglion cell axonal growth through the injured optic ***,it is unknown whether olfactory ensheathing glia also have neuroprotective *** ensheathing glia express brain-derived neurotrophic factor,one of the best neuroprotectants for axotomized retinal ganglion ***,we aimed to investigate the neuroprotective capacity of olfactory ensheating glia after optic nerve *** ensheathing glia cells from an established rat immortalized clonal cell line,TEG3,were intravitreally injected in intact and axotomized retinas in syngeneic and allogeneic mode with or without microglial inhibition or immunosuppressive *** and gene expression analyses were *** bulb-derived primary olfactory ensheathing glia and TEG3 express major histocompatibility complex classⅡ*** and syngenically transplanted TEG3 cells survived in the vitreous for up to 21 days,forming an *** axotomized retinas,only the allogeneic TEG3 transplant rescued retinal ganglion cells at 7 days but not at 21 *** these retinas,microglial anatomical activation was higher than after optic nerve crush *** intact retinas,both transplants activated microglial cells and caused retinal ganglion cell death at 21 days,a loss that was higher after allotransplantation,triggered by pyroptosis and partially rescued by microglial inhibition or ***,neuroprotection of axotomized retinal ganglion cells did not improve with these *** different neuroprotective properties,different toxic effects,and different responses to microglial inhibitory treatments of olfactory ensheathing glia in the retina depending on the type of transplant highlight the importance of thorough preclinical studies to explore these variables.

关键词： cell therapy immune recognition major histocompatibility complex class II(MHCII) neuroprotection olfactory ensheathing glia retinal ganglion cells

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

On the Perturbation of Semi-Fredholm Relations with Complemented Ranges and Null Spaces

引用

Acta Mathematica Sinica,English Series 2010年第8期26卷 1545-1554页

作者： teresa LVAREZ Department of Mathematics University of Oviedo

Multivalued semi-Fredholm type linear operators with complemented ranges and null spaces are introduced. Conditions are obtained under which the classes given are stable under compact, strictly singular and strictly c... 详细信息

关键词： Left-Atkinson relation right-Atkinson relation strictly singular strictly cosingular perturbation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

LEFT-RIGHT BROWDER LINEAR RELATIONS AND RIESZ PERTURBATIONS

引用

Acta Mathematica Scientia 2017年第5期37卷 1437-1452页

作者： teresa ALVAREZ Department of Mathematics University of Oviedo33007OviedoAsturiasSpain

A closed linear relation T in a Banach space X is called left(resp. right) Fredholm if it is upper(resp. lower) semi Fredholm and its range(resp. null space) is topologically complemented in X. We say that T is left(resp. right) Browder if it is left(resp. right)Fredholm and has a finite ascent(resp. descent). In this paper, we analyze the stability of the left(resp. right) Fredholm and the left(resp. right) Browder linear relations under commuting Riesz operator perturbations. Recent results of Zivkovic et al. to the case of bounded operators are covered.

关键词： left and right Fredholm linear relations left and right Browder linear relations Riesz perturbations

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The plasticity of plasticity:lesson from remote microglia induced by focal central nervous system injury

引用

Neural Regeneration Research 2020年第1期15卷 57-58页

作者： Maria teresa Viscomi Institute of Histology and Embriology Università Cattolica del S.Cuore

The last decades have represented an important season in the re-conceptualization of brain plasticity,especially in extending the concept at events occurring beyond the developmental stage and in demonstrating the profound impact of these changes on so-called spontaneous recovery after central nervous system(CNS)*** study of the cellular,molecular,functional and structural mechanisms involved in brain plasticity has clearly emphasized the multitude of players engaged in this phenomenon,leading to the conceptualization that non-neuronal cells and non-neuronal mechanisms intervene in these changes and orchestrate some of the responses observed(Werner and Stevens,2015).Among the different non-neuronal cells and non-neuronal substrates of injury-induced plasticity is becoming increasingly recognized that microglia drive a series of intrinsic CNS responses after damage(Sandvig et al.,2018;Bisicchia et al.,2019).

关键词： plasticity system injuries

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Management of betablocked patients after sustained virological response in hepatitis C cirrhosis

引用

World Journal of Gastroenterology 2019年第21期25卷 2665-2674页

作者： Marta Abadía María Luisa Montes Dolores ponce Consuelo Froilán Miriam Romero Joaquín Poza teresa Hernández Rubén Fernández-Martos Antonio Olveira Antonio Olveira Servicio de Aparato DigestivoHospital Universitario La PazMadrid 28046Spain Unidad VIH Servicio de Medicina InternaHospital Universitario La PazMadrid 28046Spain Servicio de Radiología Hospital Universitario La PazMadrid 28046Spain CIBERehd IdiPAZ Madrid 28029Spain

BACKGROUND Current guidelines do not address the post–sustained virological response management of patients with baseline hepatitis C virus (HCV) cirrhosis and oesophageal varices taking betablockers as primary or secondary prophylaxis of variceal bleeding. We hypothesized that in some of these patients portal hypertension drops below the bleeding threshold after sustained virological response, making definitive discontinuation of the betablockers a safe option. AIM To assess the evolution of portal hypertension, associated factors, non-invasive assessment, and risk of stopping betablockers in this population. METHODS Inclusion criteria were age > 18 years, HCV cirrhosis (diagnosed by liver biopsy or transient elastography > 14 kPa), sustained virological response after directacting antivirals, and baseline oesophageal varices under stable, long-term treatment with betablockers as primary or secondary bleeding prophylaxis. Main exclusion criteria were prehepatic portal hypertension, isolated gastric varices, and concomitant liver disease. Blood tests, transient elastography, and upper gastrointestinal endoscopy were performed. Hepatic venous pressure gradient (HVPG) was measured five days after stopping betablockers. Betablockers could be stopped permanently if gradient was < 12 mmHg, at the discretion of the attending physician. RESULTS Sample comprised 33 patients under treatment with propranolol or carvedilol: median age 64 years, men 54.5%, median Model for End-Stage Liver Disease (MELD) score 9, Child-Pugh score A 77%, median platelets 77.000 × 103/μL, median albumin 3.9 g/dL, median baseline transient elastography 24.8 kPa, 88% of patients received primary prophylaxis. Median time from end of antivirals to gradient was 67 wk. Venous pressure gradient was < 12 mmHg in 13 patients (39.4%). In univariate analysis the only associated factor was a MELD score decrease from baseline. On endoscopy, variceal size regressed in 19/27 patients (70%), although gradient was

关键词： Hepatitis C virus Oesophageal varices Portal hypertension Betablocker Variceal bleeding

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Aerosol transmission of human pathogens:From miasmata to modern viral pandemics and their preservation potential in the Anthropocene record

引用

Geoscience Frontiers 2022年第6期13卷 210-223页

作者： teresa Moreno Wes Gibbons Institute of Environmental Assessment and Water Research IDAEA-CSIC08034 BarcelonaSpain Bimón Press Sitges08870 BarcelonaSpain

Ongoing uncertainty over the relative importance of aerosol transmission of COVID-19 is in part rooted in the history of medical science and our understanding of how epidemic diseases can spread through human populations. Ancient Greek medical theory held that such illnesses are transmitted by airborne pathogenic emanations containing particulate matter(“miasmata”). Notable Roman and medieval scholars such as Varro, Ibn al-Khatib and Fracastoro developed these ideas, combining them with early germ theory and the concept of contagion. A widely held but vaguely defined belief in toxic miasmatic mists as a dominant causative agent in disease propagation was overtaken by the science of 19th century microbiology and epidemiology, especially in the study of cholera, which was proven to be mainly transmitted by contaminated water. Airborne disease transmission came to be viewed as burdened by a dubious historical reputation and difficult to demonstrate convincingly. A breakthrough came with the classic mid-20th century work of Wells, Riley and Mills who proved how expiratory aerosols(their “droplet nuclei”)could transport still-infectious tuberculosis bacteria through ventilation systems. The topic of aerosol transmission of pathogenic respiratory diseases assumed a new dimension with the mid-late 20th century “Great Acceleration” of an increasingly hypermobile human population repeatedly infected by different strains of zoonotic viruses, and has taken centre stage this century in response to outbreaks of new respiratory infections that include coronaviruses. From a geoscience perspective, the consequences of pandemic-status diseases such as COVID-19, produced by viral pathogens utilising aerosols to infect a human population currently approaching 8 billion, are far-reaching and unprecedented. The obvious and sudden impacts on for example waste plastic production, water and air quality and atmospheric chemistry are accelerating human awareness of current environmental chal

关键词： COVID-19 History of epidemics Aerosol disease transmission Coronavirus Anthropocene record

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Clustering mechanism for electric tomography imaging

引用

Science China(Information Sciences) 2012年第12期55卷 2849-2864页

作者： WU teresa School of Computing InformaticsDecision Systems EngineeringArizona State University

Electrical tomography(ET) imaging,developed in the 1980s,has attracted much industrial and research attentions owing to its low cost,quick response,lack of radiation exposure,and non-intrusiveness compared to other tomography ***,to date applications thereof have been limited owing to its low imaging *** issue with space resolution in existing ET imaging reconstruction methods is that they employ a mathematical approach based on an ill-posed equation with inconsistent *** this paper,we propose a novel ET imaging method based on a data-driven *** recovering the cluster structures hidden in the ET imaging process followed by the application of a fuzzy clustering algorithm to identify the cluster structures,there is no need to study the ill-posed mathematical *** proposed method has been tested by means of three experiments,including image reconstructions of a human lung image and plastic rode shape,as well as two simulations executed on the Comsol *** results show that the proposed method can reconstruct ET images with much higher space resolution more quickly than the existing algorithms.

关键词： electrical tomography ill-posed problem fuzzy clustering space resolution

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：