检索结果-南通市图书馆

Importance of Quercus *** diversity and biomass of vascular epiphytes in a managed pine-oak forest in Southern Mexico

Forest Ecosystems 2022年第3期9卷 366-377页

作者： Nayely martínez-Meléndez Neptalí Ramírez-Marcial José G. García-Franco Manuel Jesús Cach-Pérez pablo martínez-zurimendi Departamento de Conservacion de la Biodiversidad El Colegio de la Frontera Sur(ECOSUR)San Cristobal de Las Casas29290ChiapasMexico Red de Ecología Functional Instituto de EcologíaA.C.Xalapa91073VeracruzMexico Departamento de Agricultura Sociedad y AmbienteEl Colegio de la Frontera Sur(ECOSUR)Villahermosa86280TabascoMexico

Background:Forestry management modifies the diversity,structure,and functioning of intervened *** extraction reduces tree density and basal area,leading to changes in the communities of vascular *** objective of this study was to evaluate the diversity and biomass of vascular epiphytes in Quercus trees remaining in two pine-oak forest stands that have been subjected to two stages of the Silvicultural Development Method(release cutting,and thinning)in comparison with an unharvested old-secondary forest in southern *** each treatment,richness of epiphytes present on 60 oak trees was recorded and their dry biomass *** calculated the true diversity(Hill numbers)and beta diversity using the Jaccard coefficient of similarity,and generated rank abundance curves per taxonomic epiphyte group(bromeliads,orchids,ferns and others).For each treatment,the relationships between overall diversity and epiphyte biomass to the host trees basal area were analyzed using log linear ***:We recorded a total of 67 species of epiphytes species belonging to 10 families hosted by five species of *** greatest species richness(^(0)D)was recorded in the old-secondary *** common(^(1)D)and dominant(^(2)D)species were recorded in the release cutting than in the other *** diversity and biomass were both slightly related to host tree basal *** of epiphytes was similar(60%)among treatments,although orchids,bromeliads,and other families were more diverse in the old-secondary *** bromeliad species were shared across all treatments,although orchids presented the most exclusive species in the unharvested *** bromeliad Tillandsia seleriana provided the greatest contribution to biomass in all treatments,followed by the orchid Camaridium *** linear models indicated that epiphyte diversity was significantly related to treatment,and epiphyte biomass to basal area of host ***:Alt

关键词： Bromeliads Chiapas Ferns Orchids Richness Sierra Madre Silvicultural development method(SDM)

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

A simple and fast method to calculate the coil currents and the external poloidal flux and magnetic field for fixed boundary equilibria

引用

Plasma Science and Technology 2024年第11期26卷 65-70页

作者： Ricardo FARENGO pablo L GARCÍA-martÍnez Hugo E FERRARI Centro Atómico Bariloche Comisión Nacional de Energía AtómicaBariloche 8400Argentina Instituto Balseiro Universidad Nacional de CuyoBariloche 8400Argentina CONICET CCT-Patagonia Norte Bariloche 8400Argentina

A simple and fast method to calculate the coil currents and the external poloidal flux and magnetic field consistent with a given internal magnetohydrodynamic(MHD) equilibrium and coil geometry is presented. The constrained optimization technique employed allows to fix the exact position of the X-points. The external poloidal flux and field are calculated using Green's functions expressed in terms of elliptic integrals that are calculated using a fast and accurate *** calculation can be limited to the region between the plasma and the device wall. An example for a double null configuration is presented.

关键词： MHD equilibrium Green's functions tokamak

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

Beyond vertebrates:the amphioxus as a relevant model system to explore the formation,organization,and regeneration of neuromuscular synapses

引用

Neural Regeneration Research 2022年第11期17卷 2425-2426页

作者： Esperanza martínez Sylvain Marcellini Juan pablo Henríquez Neuromuscular Studies Lab (NeSt Lab) Group for the Study of Developmental Processes (GDeP) Department of Cell BiologyFaculty of Biological SciencesUniversidad de Concepción Laboratory of Development and Evolution (LADE)

The neuromuscular junction(NMJ)is the peripheral synapse controlling muscle contraction and coordinated movement in a wide variety of *** humans,the mature NMJ is the primary target of morphological disassembly and fu... 详细信息

关键词： system contraction synapse

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

Energy management of micro renewable energy source and electric vehicles at home level

引用

Journal of Modern Power Systems and Clean Energy 2017年第6期5卷 979-990页

作者： Ibán JUNQUERA martínez Javier GARCíA-VILLALOBOS Inmaculada ZAMORA pablo EGUíA Department of Electrical Engineering University of the Basque CountryLeioaSpain

As renewable energy source(RES)tend to be integrated more and more at home and electric vehicles(EVs)take a greater share in the personal automobile market,users see a chance to charge their EVs by *** this context,this paper presents a review about opportunities and challenges needed to be overcome by the EV users to implement a vehicle to home system in their homes,as well as the integration of *** practical scenarios are presented,with different demand profiles,by integrating renewable energy that could be used to charge the EV.

关键词： Plug-in electric vehicles(PEV) Vehicle to home(V2H) Micro renewable energy source(micro-RES) Challenges

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

Modeling of potential habitat suitability of Hippocamelus bisulcus: effectiveness of a protected areas network in Southern Patagonia

引用

Ecological Processes 2017年第1期6卷 296-309页

作者： Yamina Micaela Rosas pablo LPeri Alejandro Huertas Herrera Hernán Pastore Guillermo martínez Pastur Laboratorio de Recursos Agroforestales Centro Austral de Investigaciones Científicas(CONICET)Houssay 200Ushuaia 9410Tierra del FuegoArgentina UNPA-INTA-CONICET.CC 332 Río Gallegos 9400Santa CruzArgentina Delegación Regional Patagonia Norte Administración de Parques NacionalesVicealmirante O’Connor 1188San Carlos de Bariloche 8400Río NegroArgentina

Introduction:Huemul(Hippocamelus bisulcus Molina)is the most threatened flag species of Southern Patagonia,where conservation efforts were not effective to avoid the retraction of its distribution *** quality modeling can assist to design better management strategies for regional conservation *** objective was to elaborate one habitat suitability map for huemul,defining the environmental characteristics at landscape level,and determining the distribution of the suitable habitat inside the current natural reserve ***:We used a database of 453 records and explored 40 potential explanatory variables(climate,topographic,and landscape variables including human-related ones)to develop one habitat suitability map using the Environmental Niche Factor Analysis(ENFA)for Santa Cruz province(Argentina).We combined the outputs in a GIS project using different shapes,including the current natural reserve ***:We defined the potential habitat for huemul,where forest edges and ecotone zones(e.g.,mainly alpine environments)were the most important environmental variables,as well as some forest types(e.g.,Nothofagus pumilio).Habitat losses were found in the extreme potential distribution areas(northern and southern areas),probably related to the increasing ranch *** current natural reserve network maintains approximately half of the huemul potential habitat in Santa Cruz province,where National Parks presented the similar conservation importance than the Provincial natural ***:Habitat suitability model for huemul can be used as a decision support system for new management strategies at different landscape levels to improve the current conservation efforts.

关键词： Nothofagus forests ENFA Habitat loss Conservation Species requirements

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

Reuse of port industrial heritage in tourist cities:Shipyards as case studies

引用

Frontiers of Architectural Research 2024年第1期13卷 164-183页

作者： María J.Andrade Eduardo Jiménez-Morales Rachel Rodríguez-Ramos pablo martínez-Ramírez Department of Art and Architecture School of ArchitectureMalaga UniversityMalaga 29013Spain

The progressive deindustrialisation of many western cities since the 1980s has led to many industrial zones linked to port activities being abandoned or falling into *** such as Barcelona,Naples,Lisbon,Amsterdam,and Hamburg have port industrial complexes of high tangible and intangible heritage value that could totally or partially disappear,resulting in an irreparable loss of their scientific,architectural,social,technological,and historical *** that in mind,Adaptive Reuse(AR)of the built heritage allows the industrial memory of the ports to be preserved by turning them into new functional centres within the existing urban *** occurs in the context of the contemporary challenges of those cities,such as touristification,the circular economy and climate change,while guaranteeing the life cycle of those *** article analyses two case studies—the Nederlandsche Scheepsbouw Maatschappij(NDSM)and the Rotterdamsche Droogdok Maatschappij(RDM)shipyards,both in the Netherlands—in order to contribute to the knowledge of AR of Port Industrial *** are two examples of good practices in port industrial heritage interventions,where the factors behind their acclaim can be easily highlighted.A multi-scale methodology is therefore used and tailored to the case of port industrial heritage,based on analysing previous studies of the heritage in different spheres and on different scales.A relationship matrix tool is thus *** enables a comparative study to be conducted,using key variables and indicators,and considering qualitative and quantitative *** provides extensive output information for each case study,which is summarised in the most favourable factors for the success of the AR of this port industrial heritage.

关键词： Industrial heritage Port-city Adaptive reuse Best practices Circular economy HUL Touristification

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

Improving the knowledge of plant potential biodiversity-ecosystem services links using maps at the regional level in Southern Patagonia

引用

Ecological Processes 2021年第1期10卷 709-734页

作者： Yamina Micaela Rosas pablo L.Peri María Vanessa Lencinas Romina Lasagno Guillermo J.martínez Pastur Laboratorio de Recursos Agroforestales Centro Austral de Investigaciones Científicas(CADIC)Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET)Houssay 2009410 UshuaiaTierra del FuegoArgentina. Instituto Nacional de Tecnología Agropecuaria(INTA) Universidad Nacional de la Patagonia Austral(UNPA)Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET)CC 3329400 Río GallegosSanta CruzArgentina. Instituto Nacional de Tecnología Agropecuaria(INTA) CC 3329400 Río GallegosSanta CruzArgentina.

Background:Biodiversity supports multiple ecosystem services,whereas species loss endangers the provision of many services and affects ecosystem resilience and resistance *** increase of remote sensing techniques allows to estimate biodiversity and ecosystem services supply at the landscape level in areas with low available data(*** Patagonia).This paper evaluates the potential biodiversity and how it links with ecosystem services,based on vascular plant species across eight ecological *** also evaluated the habitat plant requirements and their relation with natural gradients.A total of 977 plots were used to develop habitat suitability maps based on an environmental niche factor analysis of 15 more important indicator species for each ecological area(n=53 species)using 40 explanatory ***,these maps were combined into a single potential biodiversity map,which was linked with environmental variables and ecosystem services *** comparisons,data were extracted and compared through analyses of ***:The plant habitat requirements varied greatly among the different ecological areas,and it was possible to define groups according to its specialization and marginality *** potential biodiversity map allowed us to detect coldspots in the western mountains and hotspots in southern and eastern *** biodiversity was associated to higher temperatures and normalized difference vegetation index,while lower biodiversity was related to elevation and *** biodiversity was closely associated with supporting and provisioning ecosystem services in shrublands and grasslands in the humid steppe,while the lowest values were related to cultural ecosystem services in Nothofagus ***:The present study showed that plant species present remarkable differences in spatial distributions and ecological requirements,being a useful proxy for potential biodiversity *** biodiversity values

关键词： Habitat suitability Environmental variables Ecosystem functions Conservation management Ecosystem services Landscape modelling

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

Hypothalamic-pituitary-adrenal axis function during perinatal depression

引用

Neuroscience Bulletin 2015年第3期31卷 338-350页

作者： Phillipe Leff Gelman Mónica Flores-Ramos Margarita López-martínez Carlos Cruz Fuentes Juan pablo Reyes Grajeda National Institute of Perinatology Mexico City National Council of Sciences and Technology (CONACy T) Mexico City National Institute of Psychiatry Mexico City National Institute of Genomic Medicine Mexico City

Abnormal function of the hypothalamic-pituitary-adrenal （HPA） axis is an important pathological finding in pregnant women exhibiting major depressive disorder. They show high levels of cortisol pro- inflammatory cytokines, hypothalamic-pituitary peptide hormones and catecholamines, along with low dehydroepiandrosterone levels in plasma. During pregnancy, the TH2 balance together with the immune system and placental factors play crucial roles in the development of the fetal allograft to full term. These factors, when altered, may generate a persistent dysfunction of the HPA axis that may lead to an overt transfer of cortisol and toxicity to the fetus at the expense of reduced activity of placental 1113-hydroxysteroid dehydrogenase type 2. Epigenetic modifications also may contribute to the dysregulation of the HPA axis. Affective disorders in pregnant women should be taken seriously, and therapies focused on preventing the deleterious effects of stressors should be implemented to promote the welfare of both mother and baby.

关键词： brain depression neuroendocrine pregnancy stress glucocorticoids

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

Translating new data to the daily practice in second line treatment of renal cell carcinoma:The role of tumor growth rate

引用

World Journal of Clinical Oncology 2017年第2期8卷 100-105页

作者： Enrique Grande Olga martínez-Sáez pablo Gajate-Borau Teresa Alonso-Gordoa Medical Oncology Department Ramón y Cajal University Hospital

The therapeutic options for patients with metastatic renal cell carcinoma(mRCC) have completely changed during the last ten years. With the sequential use of targeted therapies, median overall survival has increased in daily practice and now it is not uncommon to see patients surviving kidney cancer for more than four to five years. Once treatment fails with the first line targeted therapy, head to head comparisons have shown that cabozantinib, nivolumab and the combination of lenvatinib plus everolimus are more effective than everolimus alone and that axitinib is more active than sorafenib. Unfortunately, it is very unlikely that we will ever have prospective data comparing the activity of axitinib, cabozantinib, lenvatinib or nivolumab. It is frustrating to observe the lack of biomarkers that we have in this field, thus there is no firm recommendation about the optimal sequence of treatment in the second line. In the absence of reliable biomarkers, there are several clinical endpoints that can help physicians to make decisions for an individual patient, such as the tumor burden, the expected response rate and the time to achieve the response to each agent, the prior response to the agent administered, the toxicity profile of the different compounds and patient preference. Here, we propose the introduction of the tumor-growth rate(TGR) during first-line treatment as a new tool to be used to select the second line strategy in m RCC. The rapidness of TGR before the onset of the treatment reflects the variability between patients in terms of tumor growth kinetics and it could be a surrogate marker of tumor aggressiveness that may guide treatment decisions.

关键词： Axitinib Everolimus Cabozantinib Kidney cancer Nivolumab Renal cell Sequence Second line Sorafenib Tumor-growth rate

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

Yield models for predicting aboveground ectomycorrhizal fungal productivity in Pinus sylvestris and Pinus pinaster stands of northern Spain

引用

Forest Ecosystems 2019年第4期6卷 414-426页

作者： Mariola Sánchez-González Sergio de-Miguel pablo martin-Pinto Fernando martínez-Pe?a María Pasalodos-Tato Juan Andrés Oria-de-Rueda Juan martínez de Aragón Isabel Ca?ellas José Antonio Bonet Spanish National Institute for Agricultural and Food Research and Technology (INIA)

Background: Predictive models shed light on aboveground fungal yield dynamics and can assist decision-making in forestry by integrating this valuable non-wood forest product into forest management planning. However, the currently existing models are based on rather local data and, thus, there is a lack of predictive tools to monitor mushroom yields on larger ***: This work presents the first empirical models for predicting the annual yields of ectomycorrhizal mushrooms and related ecosystem services in Pinus sylvestris and Pinus pinaster stands in northern Spain, using a long-term dataset suitable to account for the combined effect of meteorological conditions and stand *** were fitted for the following groups of fungi separately: all ectomycorrhizal mushrooms, edible mushrooms and marketed mushrooms. Our results show the influence of the weather variables(mainly precipitation) on mushroom yields as well as the relevance of the basal area of the forest stand that follows a right-skewed unimodal curve with maximum predicted yields at stand basal areas of 30–40 m2·***: These models are the first empirical models for predicting the annual yields of ectomycorrhizal mushrooms in Pinus sylvestris and Pinus pinaster stands in northern Spain, being of the highest resolution developed to date and enable predictions of mushrooms productivity by taking into account weather conditions and forests’ location, composition and structure.

关键词： Mushrooms Fungi Non-wood forest products Mixed models Hurdle models

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

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：