检索结果-南通市图书馆

Neural Regeneration Research 2024年第11期19卷 2339-2340页

作者： valerie M.k.Verge Nataliya Tokarska Justin M.Naniong Department of Anatomy Physiology and PharmacologyUniversity of SaskatchewanSaskatoonSKCanada Cameco MS Neuroscience Research Center University of SaskatchewanSaskatoonSKCanada

Multiple sclerosis(MS)is a debilitating inflammatory disease of the central nervous system characterized by immune-mediated segmental demyelination and variable degrees of axonal and neuronal degeneration that contribute to *** efficient and effective repair programs following demyelination is a major goal and challenge in *** MS therapies focus largely on modulating the immune aspects of the disease contributing to *** this alleviates some symptoms and mitigates damage,it does not tackle the fundamental challenge of effective remyelination,which few MS patients experience,especially in the progressive phase of the disease.

关键词： sclerosis degeneration damage

Vonoprazan-amoxicillin dual regimen with Saccharomyces boulardii as a rescue therapy for Helicobacter pylori:Current perspectives and implications

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2024年第10期30卷 1280-1286页

作者： valerie Josephine Dirjayanto Jessica Audrey Daniel Martin Simadibrata Faculty of Medicine Universitas IndonesiaJakarta Pusat 10430DKI JakartaIndonesia Division of Gastroenterology and Hepatology Mayo ClinicRochesterMinnesota 55905United States Nuffield Department of Population Health University of OxfordOxford OX37LFUnited Kingdom

Yu et al’s study in the World Journal of Gastroenterology(2023)introduced a novel regimen of Vonoprazan-amoxicillin dual therapy combined with Saccharomyces boulardii(***)for the rescue therapy against Helicobacter pylori(***),a pathogen responsible for peptic ulcers and gastric *** is a potassium-competitive acid blocker renowned for its rapid and long-lasting acid suppression,which is minimally affected by *** to proton pump inhibitors,which bind irreversibly to cysteine residues in the H+/k+-ATPase pump,Vonoprazan competes with the k+ions,prevents the ions from binding to the pump and blocks acid *** with increasing antibiotic resistance,effects on the gut microbiota,patient compliance,and side effects have led to the advent of a dual regimen for *** studies suggested that *** plays a role in stabilizing the gut barrier which improves *** eradication *** an acceptable safety profile,the dual-adjunct regimen was effective regardless of prior treatment failure and antibiotic resistance profile,thereby strengthening the applicability in clinical ***,*** comes in various formulations and dosages,warranting further exploration into the optimal dosage for supplementation in rescue ***,larger,randomized,double-blinded controlled trials are warranted to confirm these promising results.

关键词： Vonoprazan Saccharomyces boulardii Helicobacter pylori Rescue therapy Eradication rate

Piezoelectric resonant ice protection systems-Part 2/2:Evaluation of benefits at aircraft level

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Aeronautics 2024年第6期37卷 50-63页

作者： Valerian PALANQUE Thomas PLANES Pommier-Budinger valerie Budinger MARC Delbecq SCOTT Institut Clement Ader(ICA) INSAISAE-SUPAEROMINES ALBIUPSCNRSUniversity of Toulouse31400 ToulouseFrance Federation ENAC ISAE-SUPAERO ONERA University of Toulouse31400 ToulouseFrance

Piezoelectric resonant de-icing systems are attracting great *** paper aims to assess the implementation of these systems at the aircraft *** article begins with the model to compute the power requirement of a piezoelectric resonant de-icing system sized from the prototype detailed in Part 1/2 of this *** the mass,drag,and fuel consumption of this system and the subcomponents needed for its implementation are *** features of a piezoelectric resonant de-icing system are finally computed for aircraft similar to Airbus A320 aircraft and aircraft of different categories(Boeing 787,ATR 72 and TBM 900)and compared with the existing thermal and mechanical ice protection systems.A sensitivity analysis of the main key sizing parameters of the piezoelectric de-icing system is also performed to identify the main axes of improvement for this *** study shows the potential of such ice protection *** particular,for the realistic input parameters chosen in this work,the electro-mechanical solution can provide a 54% reduction in terms of mass and a 92% reduction in terms of power consumption for an A320 aircraft architecture,leading to a 74% decrease in the associated fuel consumption compared to the actual air bleed system.

关键词： Ice protection system De-icing Piezoelectric Electro-mechanical system Power Fuel consumption

在线全文

学校读者我要写书评

暂无评论

土壤中的生物多样性与生态系统功能

人类环境杂志 1997年第8期26卷 555-562页

作者： Lijbert Brussaard Val M.Behan-Pelletier David E.Bignell valerie k.brown Wim Didden Patrica Folgarait Carlos Fragoso Diana Wall Freckman Vadakattu V.S.R.Gupta Tsutomu Hattori's David L.Hawkworth Carole klopatek Patric Lavelle David W.Malloch Josef Rusek Bengt Sderstrom James M.Tiedje Ross A.Virginia 闵庆文瓦赫宁根农业大学渥太华加拿大农业马来西亚沙巴大学国际昆虫研究所 IFEVA Facultad de Agronomia 墨西哥Xalapa的生态研究所科罗拉多州立大学澳大利亚Adelaide土壤与土地管理合作研究中心 Attic 英国CAB国际真菌学研究所森林服务中心中全国地下可持续性研究项目组巴黎第四大学多伦多大学植物学系维采的捷克共和国科学院土壤生物学研究所 Lund大学微生物生态学系密歇根州立大学微生物生态学研究中心达特茅斯学院环境学

我们回顾了目前关于土壤生物多样性及其在生态系统过程中的作用、对于人类目标的重要性及对胁迫和扰动的恢复能力等的研究进展。现存物种的数量远远大于人们已经描述的数量,即使是对于肉眼可见的分类群也是如此。而且也普遍缺乏在生物... 详细信息

我们回顾了目前关于土壤生物多样性及其在生态系统过程中的作用、对于人类目标的重要性及对胁迫和扰动的恢复能力等的研究进展。现存物种的数量远远大于人们已经描述的数量,即使是对于肉眼可见的分类群也是如此。而且也普遍缺乏在生物地理学上的综合描述。迫切需要在分类学和对新一代系统科学家培训上做更大努力。尤其是应当集中致力于就我们所知。对生态系统功能起关键作用的土壤生物类群方面。为了确定这种类群,需要对土壤生物区系的影响圈(sphere of Influence,SOI),如根的生物区系、有机物质破碎者(shredder)和土壤生物扰动者(bioturbator)加以识别,这些影响圈比如可能通过与植物的相互作用而控制着生态系统的过程。在这些SOI中,我们分析出了土壤有机体的功能类群。最迫切需要研究的问题是将物种按功能类群进行区分,并确定功能类群中的物种冗余。这种迫切性是根据为阐述与集约化农业、森林扰动、环境污染和全球环境变化有关的土壤功能丧失程度的需要而确定的。目前认为最处于危险的土壤生物区系是那些大型动物群的有机物破碎者、土壤生物扰动者、某些专门的细菌(如硝化细菌和固氮菌)以及形成真菌的菌根中贫乏物种的功能类群。在开展这些优先性研究时,需要使用长期的和大尺度的田间试验,以及地理统计学和地理信息系统等现代方法进行试验研究。

关键词：土壤生物多样性生态系统功能

AB_(2)-type rare earth-based compounds with C-15 structure:Looking for reversible hydrogen storage materials

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2024年第5期42卷 803-816,I0001页

作者： Hao Shen Junxian Zhang valerie Paul-Boncour Ping Li Zhinian Li Yuanfang Wu Lijun Jiang National Engineering Research Center of Nonferrous Metals Materias and Products for New Energy GRINM Group Co.LtdBeijing00088China Univ Paris Est Creteil CNRSICMPEUMR 71822 rue Henri Dunant94320ThiaisFrance Institute for Advanced Materials and Technology University of Science and TechnologyBeijing100083China GRIMAT Engineering Institute Co. Ltd.Beijing101407China

AB_(2)-type(A=rare earth,B=transition metal)intermetallic compounds with C15 structure can easily absorb large amount of hydrogen,showing their potential use as hydrogen storage *** crucial problem hindering their application is hydrogen induced amorphization(HIA),which leads to the irreversible hydrogen sorption *** stability of the AB_2 Laves phase compounds,the structural properties,the hydrogenation properties and the controlling factors of HIA are discussed in this *** with other factors,the atomic radii ratio r_A/r_B is the most important one influencing the ***-element substitution is an efficient way to suppress or limit HIA and may enable AB_2 compounds to be suitable for hydrogen storage.

关键词： Rare earth-based AB_2-type compounds Hydrogenation properties Hydrogen induced amorphization Elemental substitution

Temporal, Spatial, and Hypsometrical Dispersion of Nutrients in the Hula Valley, Israel

在线全文

学校读者我要写书评

暂无评论

Open Journal of Ecology 2024年第8期14卷 604-628页

作者： Moshe Gophen valerie Orlov-Levin Migal Galilee Scientific Research Institute Kiryat Shmone Israel

Until 1957 most of the Hula Valley was occupied by swampy wetland covered by dense vegetation and old Lake Hula. Organic matter was accumulated in the bottom, decomposed under anoxic conditions creating Peat material. The wetland and the old lake were drained and the land-use was converted into agricultural development. Nutrients migrations from the Hula Valley through the headwater discharges carrying nutrients, where nitrogen enhancement is critical, significantly affecting water quality in down-stream Lake kinneret. The fate of the Hula originated nutrients is partly known whilst fate of the others which might be probably a threat on the kinneret water quality is unknown. The hypsometrical and spatial distribution of the Hula Valley originated nutrients within three depths level was indicated: shallowest level of surface water, intermediate level of underground water table and the deepest level of Lignite waters. The Hypsometrical and spatial distribution and regional origin of the nutrient in the Hula Valley was defined. Organic Nitrogen, Sulfate and Nitrates are mostly Hula Valley originated nutrients whilst most of the Phosphorus externally contributed to Lake kinneret originate outside the Hula Valley. An underground north-south Hydrological gradient and nutrient migration along was indicated. It is suggested that an underground plastic barrier do not totally prevent horizontal nutrient migration. Hypsometrical downward migrated nutrients probably accumulate within the “Lignite” depth level. Management policy of increasing Peat Soil moisture, is recommended.

关键词： Hula Valley kinneret Nutrients Runoff Underground Lignite

Assessment of the piroxicam-incited model of synchronized colitis in T-cell receptor alpha chain-deficient mice

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Animal Models and Experimental Medicine 2024年第4期7卷 533-543页

作者： Maximo E.Lange Danisa M.Bescucci valerie F.Boras Tony Montina G.Douglas Inglis douglas inglis 11 lethbridge research and development centre agriculture and agri-food canadalethbridgealbertacanada alberta health services chinook regional hospitallethbridgealbertacanada department of chemistry and biochemistry university of lethbridgelethbridgealbertacanada southern alberta genome sciences centre university of lethbridgelethbridgealbertacanada

Background:A multitude of mouse models are utilized to emulate and study intestinal inflammation.T-cell receptor alpha chain(TCRα)-deficient mice are used as a model of spontaneous colitis that has similarities with human ulcerative ***,colitis is triggered late in the life of the mouse(age:4-5 months),and inflammation does not develop at the same time in different mice.A previously conducted study reported that the administration of the drug piroxicam triggered predictable and early colitis in TCRα-deficient mice at the age of 6-8 ***,a detailed characterization of ensuing inflammation was not ***:We conducted an in-depth examination of piroxicam-triggered colitis in TCRα-deficient mice,with emphasis on spatial histopathologic changes and analysis of expression of inflammatory ***,we tested amelioration of colitis with ***:We confirmed that piroxicam induced a time-prescribed colitis and did so in the proximal colon as well as the cecum of TCRα-deficient *** adminis-tration was observed to induce epithelial hyperplasia,goblet cell loss,and leukocyte infiltration with occasional ulceration.A Swiss roll technique was used to examine the colon and cecum in its ***,we observed that inflammation was mul-tifocal segmental,with areas of tissue damage in between healthy *** addition,we observed variability in the severity of inflammation among replicate animals and treatments,and that the administration of dexamethasone only partially ameliorated inflammation in the proximal ***:Piroxicam consistently induced multifocal segmental colitis in the proxi-mal colon and cecum,although the degree of inflammation was reduced in the ***,spatial variability in inflammation in the large intestine and the inter-replicate variation in the severity of inflammation must be taken into consideration when utilizing this murine model of synchronized colitis.

关键词： colon dexamethasone histology induction inflammation knockout

Presurgical structural imaging and clinical outcome in combined bed nucleus of the stria terminalis-nucleus accumbens deep brain stimulation for treatment-resistant depression

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

General Psychiatry 2024年第3期37卷 412-421页

作者： Fengting Wang Lulin Dai Tao Wang Yingying Zhang Yuhan Wang Yijie Zhao Yixin Pan Liuguan Bian Dianyou Li Shikun Zhan Yijie Lai valerie Voon Bomin Sun Department of Neurosurgery Shanghai Jiao Tong University Medical School Affiliated Ruijin HospitalShanghaiChina Department of Psychiatry Zhejiang University School of Medicine Sir Run Run Shaw HospitalHangzhouChina Fudan University Institute of Science and Technology for Brain-inspired Intelligence ShanghaiChina Clinical Research Center for Mental Disorders Shanghai Pudong New Area Mental Health CenterShanghaiChina Department of Psychiatry University of CambridgeCambridgeUK

Background Structural imaging holds great potential for precise targeting and stimulation for deep brain stimulation(DBS).The anatomical information it provides may serve as potential biomarkers for predicting the efficacy of DBS in treatment-resistant depression(TRD).Aims The primary aim is to identify preoperative imaging biomarkers that correlate with the efficacy of DBS in patients with *** Preoperative imaging parameters were estimated and correlated with the 6-month clinical outcome of patients with TRD receiving combined bed nucleus of the stria terminalis(BNST)-nucleus accumbens(NAc)*** matter(WM)properties were extracted and compared between the response/non-response and remission/non-remission *** connectome was constructed and analysed using graph *** of the volume of activated tissue(VAT)to the main modulating tracts were also estimated to evaluate the *** Differences in fibre bundle properties of tracts,including superior thalamic radiation and reticulospinal tract,were observed between the remission and nonremission *** of the centre of the VAT to tracts connecting the ventral tegmental area and the anterior limb of internal capsule on the left side varied between the remission and non-remission groups(p=0.010,t=3.07).The normalised clustering coefficient(γ)and the small-world property(σ)in graph analysis correlated with the symptom improvement after the correction of *** Presurgical structural alterations in WM tracts connecting the frontal area with subcortical regions,as well as the distance of the VAT to the modulating tracts,may influence the clinical outcome of BNST-NAc *** findings provide potential imaging biomarkers for the DBS treatment for patients with TRD.

关键词： stimulation alterations treatment

Towards precision 24-hour movement behavior recommendations—The next new paradigm?

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Sport and Health Science 2024年第6期13卷 743-748页

作者： Mark S.Tremblay Markus J.Duncan Nicholas kuzik Diego Augusto Santos Silva valerie Carson CHEO Research Institute OttawaON K1H 8L1Canada Department of Pediatrics University of OttawaOttawaON K1H 8L1Canada Federal University of Santa Catarina Santa Catarina 88040900Brazil Faculty of kinesiology Sportand RecreationUniversity of AlbertaEdmontonAB T6G 2H9Canada

*** The importance of physical activity(PA)for health is unequivocal.^(1)Accordingly,population-based recommendations for exercise,and more recently public health guidelines for PA,have been developed and released by authoritative groups for many decades.^(2)Such guidelines emerged with leadership from the exercise physiology discipline and were rooted in,and loyal to,the importance of moderate-to-vigorous intensity PA(MVPA)or exercise.

关键词： movement behavior exercise

Associated Factors of Dental Caries among Intellectually Disabled Persons in Specialized Centers of Ouagadougou

在线全文

学校读者我要写书评

暂无评论

Open Journal of Epidemiology 2024年第2期14卷 297-311页

作者： Jocelyne valerie Gare Filwende Dan kientega Ouedraogo Carole Nathaie Tenin Ouattara Seydou kabore Wendpoulomde Aime Désire Nicolas Meda Training and Research Unit in Health Sciences Department of Public Health Joseph Ki Zerbo University Ouagadougou Burkina Faso Training and Research Unit in Health Sciences Department of Dental Surgery Joseph Ki Zerbo University Ouagadougou Burkina Faso

Introduction: Several studies have reported a high prevalence of dental caries among the people with intellectual disabilities. In order to identify the sociodemographic, clinical and behavioral factors associated with it, we conducted a study in specialized centers welcoming subjects with intellectual disabilities in Ouagadougou (Burkina Faso). Objectives: The objective of this study was to identify the factors associated with it among intellectually disabled in the specialized centers of Ouagadougou. Methods: The study was cross-sectional analytical. The survey took place between November 2020 and January 2021 among people with intellectual disabilities in reception centers receiving a grant from the Ministry of Women, National Solidarity, Family and Humanitarian Action. Data collection was done with a questionnaire adapted from the World Health Organization (WHO) and dental caries was recorded according to WHO criteria in decayed, missing or filled teeth generating a DMF index. Logistic regression was used to identify factors associated with the presence of dental caries. Results: A total of 193 participants were included in the study with an average age of 12.4 years ± 7.9. The overall prevalence of caries measured with the DMF index was 58.6% 95% CI [51.2 - 65.8]. It was significantly associated with female gender (OR = 4.2;95% CI [1.4 - 12.5], p = 0,01), the clinical form of mental illness (epilepsy OR = 3.8 95%;CI [1.2 - 12.7], p = 0,02, trisomy OR = 5.0;95% CI [1.1 - 22.9], p = 0,03, motor autonomy OR = 0.2 95%;CI [0.1 - 0.7], p = 0,01) and at use of toothpaste OR = 9.33;95% CI [1.05 - 82.7], p = 0,04. Conclusion: Dental caries remains a very present pathology in most people living with an intellectual disability. Also, it is necessary to put in place prevention strategies to reduce its prevalence and improve access to oral care for these people.

关键词： Dental Caries Mental Disability Intellectual Disability Associated Factors Ouagadougou