检索结果-南通市图书馆

Multitemporal landslide inventory analysis of an intertropical mountain in west-central Mexico——Basis for hazard management

引用

Journal of Mountain Science 2022年第6期19卷 1650-1669页

作者： Alejandro Cesar VALDES CARRERA Manuel E.mendoza Teodoro CARLÓN ALLENDE Jose Luis MACIAS Centro de Investigaciones en Geografia Ambiental Universidad Nacional Autonoma de MexicoMorelia 58190Mexico Consejo Nacional de Ciencia y Tecnologia-Instituto de Geofisica-Unidad Michoacan Universidad Nacional Autonoma de MexicoMorelia 58190Mexico Instituto de Geofisica-Unidad Michoacan Universidad Nacional Autonoma de MexicoMorelia 58190Mexico

Landslides in intertropical mountainous areas of Mexico are a natural hazard that could potentially generate a disaster. Despite this, many areas lack landslide inventories, making it difficult to monitor and efficiently manage the associated risks for local populations. For this reason, the aim of this research was to undertake a multitemporal landslide inventory and analyze its conditioning factors in the Pico de Tancítaro stratovolcano, which, in recent decades, has presented several high-risk geomorphological events with disastrous consequences for nearby localities. The spatial distribution of landslides and its conditioning factors were mapped at a 1:50,000 scale for the 1995-2020 period, through visual interpretation of orthophotos and satellite images(Landsat, SPOT, and SENTINEL). The conditioning factors that link the most to landslides were Quaternary andesite and basaltic andesite rocks;volcanic cones, mountain river valleys, and very steep to steep slopes(30° to >45°), oriented to the South, North, and East;Andosols and Leptosols;and the oyamel fir and mixed forests. 505 landslide events classified into slides and flows that occurred in 1995, 2004, 2010, and 2015 were identified. New scars generated by the reactivation of landslide processes were also observed. The landslides in the study area were triggered by torrential rains caused by hurricanes and tropical storms;such as hurricanes Alex and Patricia. The inventory and analysis of conditioning factors highlighted the distribution and dynamics of slides and flows in the study area. In addition, the most important factors for studies of landslide susceptibility, hazards, and risks in the Pico de Tancítaro stratovolcano were identified, contributing to the management of geomorphological risks in intertropical mountain areas.

关键词： Geomorphology Mass wasting Natural hazards Pico de Tancítaro stratovolcano Risk management

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

Assessment of Nitrogen Fixation, Uptake, and Leaching in Maize/Soybean Intercropping System at Varied Soil Depths and under Phosphorus Application in Chinese Agricultural Settings

引用

Natural Resources 2024年第7期15卷 173-187页

作者： bertha Magombo Chunjie Li Benjamin Kolie China Agricultural University Department of Resource and Environmental Science and Plant Protection Beijing China Institute of Geographic Sciences and Natural Resources Research Chinese Academic of Science Beijing China Department of Resources and Environmental Management University of the Chinese Academy of Sciences Beijing China

The study of Nitrogen fixation, uptake, and leaching at different soil depths in the co-cultivation of maize and soybean under phosphorus fertilization is important for sustainable agriculture. This study was conducted in Quzhou, Hebei Province, China, with MC812 maize and Jidou12 soybean varieties. Soil samples were taken from each plot to create a composite sample. The results show that nitrogen concentration varies at different depths and is higher in all treatments between 40 and 100 cm. Incorporating intercropping of maize and soybeans into farming practices can lead to more sustainable and environmentally friendly agriculture in China.

关键词： Nitrogen Maize/Soybean Fertilization Intercropping Soil Fixation

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

The effect of Saccharomyces cerevisiae on digestion and mortality in the volcano rabbit(Romerolagus diazi)

引用

Journal of Integrative Agriculture 2015年第3期14卷 520-525页

作者： Rogelio Campos-Morales Germán D mendoza Javier Ojeda Fernando X Plata José A Martínez Nutrition Area Surveillance General Direction of Zoos Mexico from City and Wildlife México Master Program in Animal and Agricultural Sciences Metropolitan Autonomous University (Xochimilco Unit)

An experiment was conducted to evaluate whether supplementation with a probiotic could enhance digestion and reduce mortality in the volcano rabbit in captivity. Two enclosures at Chapultepec Zoo, Mexico（114 individuals） were used in a crossover design（two periods of 60 days） with the following treatments： control group and supplementation with Saccharomyces cerevisiae（2×108 CFU/exhibit/day）. Supplementation with the probiotic negatively affected（P〈0.01） the digestibility of dry matter, organic matter, neutral detergent fiber（NDF） and energy. Mortality increased（P〈0.04） following supplementation with the probiotic（4.26% vs. 8.89%）, primarily in the juvenile rabbits. The results indicate that yeast supplementation in the volcano rabbit negatively affects digestion and mortality in captivity.

关键词： Saccharomyces cerevisiae volcano rabbit digestibility mortality

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

Role of platelets and breast cancer stem cells in metastasis

引用

World Journal of Stem Cells 2020年第11期12卷 1237-1254页

作者： Gretel mendoza-Almanza Luis Burciaga-Hernandez Vilma Maldonado Jorge Melendez-Zajgla Jorge Olmos CONACYT Universidad Autónoma de Zacatecas.Zacatecas 98060Mexico Maestría en Ciencias Biomédicas Universidad Autónoma de ZacatecasZacatecas 98160Mexico Laboratorio de Epigenética Instituto Nacional de Medicina GenómicaCiudad de México 14610Mexico Génómica funcional del cáncer Instituto Nacional de Medicina GenómicaCiudad de México 14610Mexico Biotecnología Marina Centro de Investigación Científica y de Estudios Superiores de EnsenadaEnsenada 22860Mexico

The high mortality rate of breast cancer is mainly caused by the metastatic ability of cancer cells,resistance to chemotherapy and radiotherapy,and tumor regression *** recent years,it has been shown that the presence of breast cancer stem cells is closely associated with the migration and metastatic ability of cancer cells,as well as with their resistance to chemotherapy and *** tumor microenvironment is one of the main molecular factors involved in cancer and metastatic processes development,in this sense it is interesting to study the role of platelets,one of the main communicator cells in the human body which are activated by the signals they receive from the microenvironment and can generate more than one *** can ingest and release RNA,proteins,cytokines and growth *** the platelets interact with the tumor microenvironment,they are called"tumor-educated platelets."Tumor-educated platelets transport material from the tumor microenvironment to sites adjacent to the tumor,thus helping to create microenvironments conducive for the development of primary and metastatic *** has been observed that the clone capable of carrying out the metastatic process is a cancer cell with stem cell *** stem cells go through a series of processes,including epithelial-mesenchymal transition,intravasation into blood vessels,movement through blood vessels,extravasation at the site of the establishment of a metastatic focus,and site ***-educated platelets support all these processes.

关键词： Breast cancer stem cells Platelets Metastasis Tumor microenvironment Epithelial-mesenchymal transition

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

Using fireball networks to track more frequent reentries:Falcon 9 upperstage orbit determination from video recordings

引用

Astrodynamics 2021年第4期5卷 347-358页

作者： Eloy pena-Asensio Josep M.Trigo-Rodriguez Marco Langbroek Albert Rimola Antonio J.Robles Departament de Química Universitat Autònoma de Barcelona(UAB)BellaterraCatalonia 08193Spain Institute of Space Sciences(CSIC) Cerdanyola del VallèsBarcelonaCatalonia 08193Spain Institut d’Estudis Espacials de Catalunya(IEEC) Ed.NexusBarcelonaCatalonia 08034Spain Leiden Observatory Faculty of ScienceLeiden University95002300 RA Leidenthe Netherlands Belgian Working Group Satellites(BWGS) Belgium Spanish Meteor Network(SPMN)Team Spain

On February 16,2021,an artificial object moving slowly over the Mediterranean was recorded by the Spanish Meteor Network(SPMN).Based on astrometric measurements,we identified this event as the reentry engine burn of a SpaceX Falcon 9 launch vehicle’s upper *** study this event in detail,we adapted the plane intersection method for near-straight meteoroid trajectories to analyze the slow and curved orbits associated with artificial *** corroborate our results,we approximated the orbital elements of the upper stage using four pieces of“debris”cataloged by the ***’s Combined Space Operations *** on these calculations,we also estimated the possible deorbit hazard zone using the MSISE90 model *** provide guidance regarding the interference that these artificial bolides may generate in fireball ***,because artificial bolides will likely become more frequent in the future,we point out the new role that ground-based detection networks can play in the monitoring of potentially hazardous artificial objects in near-Earth space and in determining the strewn fields of artificial space debris.

关键词： fireball reentry deorbit artificial meteor multistation

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

Design and Implementation of a Rehabilitation Upper-limb Exoskeleton Robot Controlled by Cognitive and Physical Interfaces

引用

Journal of Bionic Engineering 2022年第5期19卷 1374-1391页

作者： Arturo Gonzalez‑mendoza Ivett Quinones‑Uriostegui Sergio Salazar‑Cruz Alberto‑Isaac Perez‑Sanpablo Ricardo Lopez‑Gutierrez Rogelio Lozano LAFMIA UMI Center for Research and AdvancedStudies of National Polytechnic InstituteAv.Instituto Politecnico Nacional No.250807360 Mexico CityMexico Motion Analysis Lab National Institute of Rehabilitation Luis Guillermo Ibarra IbarraCalz.Mexico Xochimilco No.28914389 Mexico CityMexico CONACYT-CINVESTAV Av.Instituto Politecnico Nacional 250807360 Mexico CityMexico UTC-CNRS UMR Sorbonne UniversitesUTC-CNRS UMR7253 HeudiasycCompiegneFrance

This paper presents an upper limb exoskeleton that allows cognitive(through electromyography signals)and physical user interaction(through load cells sensors)for passive and active exercises that can activate neuroplasticity in the rehabilitation process of people who suffer from a neurological *** the exoskeleton to be easily accepted by patients who suffer from a neurological injury,we used the ISO9241-210:2010 as a methodology design *** the first steps of the design process,design requirements were collected from previous usability tests and ***,as a second step,a technological solution is proposed,and as a third step,the system was evaluated through performance and user *** part of the technological solution and to allow patient participation during the rehabilitation process,we have proposed a hybrid admittance control whose input is load cell or electromyography *** hybrid admittance control is intended for active therapy exercises,is easily implemented,and does not need musculoskeletal modeling to ***,electromyography signals classification models and features were evaluated to identify the best settings for the cognitive human–robot interaction.

关键词： Human Robot interaction Hybrid admittance control Surface electromyography Upper-limb exoskeletal robot

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

Need for infliximab dose intensification in Crohn's disease and ulcerative colitis

引用

World Journal of Gastroenterology 2014年第27期20卷 9170-9177页

作者： Carlos Taxonera David Olivares Juan L mendoza Manuel Díaz-Rubio Enrique Rey Inflammatory Bowel Disease Unit Department of Gastroenterology Hospital Clínico San Carlos Instituto de Investigación del Hospital Clínico San Carlos (IdISSC) Department of Gastroenterology Hospital Clínico San Carlos

AIM: To compare the need for infliximab dose intensification in two cohorts of patients with Crohn’s disease (CD) or ulcerative colitis (UC).

关键词： Crohn's disease Ulcerative colitis Infliximab Dose intensification Costs

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

Coffee Leaf Rust(Hemileia vastatrix)Disease in Coffee Plants and Perspectives by the Disease Control

引用

Phyton-International Journal of Experimental Botany 2024年第5期93卷 923-949页

作者： Alexis Salazar-Navarro Victor Ruiz-Valdiviezo Jose Joya-Dávila Daniel Gonzalez-mendoza Instituto de Ciencias Agrícolas de la Universidad Autónoma de Baja California(ICA-UABC) Nuevo LeónBaja California21705México Laboratorio de Biología Molecular del Instituto Tecnológico Nacional de Tuxtla Gutierrez(TecNM) Tuxtla GutierrezChiapas29050México Facultad de Ciencias Agronómicas Campus V.Universidad Autónoma de Chiapas(UNACH) VillafloresChiapas30470México

Coffee Leaf Rust(CLR)is caused by Hemileia vastatrix in Coffea *** is one of the most dangerous phytopathogens for coffee plantations in terms of coffee productivity and coffee cup *** this review,we resume the problem of CLR in Mexico and the pathogenesis of *** review abord plant-pathogen interactions which lead a compatible or incompatible interactions and result in CLR disease or resistance,*** review abord Coffea *** response pathways involved in *** ***,current measures to control *** proliferation and germination were aborded focused on phytosanitary actions,and biological and chemical ***,new trendlines to reduce the impact of CLR as nanoparticles and nanotechnology were analyzed.

关键词： Coffee leaf rust Coffea arabica pathogenesis nanoparticles biological control

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

Identification of the autotransporter Pet toxin in Proteus mirabilis strain isolated from patients with urinary tract infections

引用

Advances in Biological Chemistry 2012年第3期2卷 283-290页

作者： Luis Raúl Gutiérrez-Lucas Guillermo mendoza-Hernández bertha González-Pedrajo Carlos Eslava-Campos Jaime Bustos-Martínez Teresita Sainz-Espunes Departamento de Sistemas Biológicos Universidad Autónoma Metropolitana-XochimilcoMéxico CityMéxico Departamento de Bioquímica Facultad de MedicinaUNAMMéxico CityMéxico Instituto de Fisiología Celular UNAMMéxico CityMéxico Departamento de Atención a la Salud Universidad Autónoma Metropolitana-XochimilcoMéxico CityMéxico

Proteus mirabilis, a motile Gram-negative bacterium, represents a common cause of complicated urinary tract infections. Autotransporters are a family of secreted proteins from Gram-negative bacteria that direct their own secretion across the outer membrane (type V autotransporter secretion mechanism). Serine protease autotransporters of Enterobacteriaceae (SPATEs) include adhesins, toxins, and proteases that can contribute to the virulence. Plasmid-encoded toxin (Pet) is the predominant protein in culture supernatants of enteroaggregative E. coli prototype strain 042 and has been extensively studied. Pet toxin is encoded on the 65-MDa adherence-related plasmid of EAEC 042 strain. In this work, Pet protein was found in the supernatant obtained from Proteus mirabilis RTX339 strain isolated from a psychiatric patient suffering complicated urinary tract infections (UTIs). The nucleotide sequence of pet gene was obtained using primers designed from E. coli 042 pet gene reported. The alignment of the sequence showed 100% identity with the pet gene reported. Is important to note that Proteus mirabilis RTX339 pet gene has chromosomal location. The chromosomal location of the gene was established since no plasmids were harbored by this strain.

关键词： Pet Proteus mirabilis SPATEs

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

Influence of climatic conditions,topography and soil attributes on the spatial distribution of site productivity index of the species rich forests of Jalisco,Mexico

引用

Journal of Forestry Research 2014年第1期25卷 87-95页

作者： Adel Mohamed Robin M.Reich Raj Khosla C.Aguirre-Bravo Martin mendoza Briseo Department of Ecology and Rangeland Stewardship Desert Research Center Department of Forest and Rangeland Stewardship Colorado State University Department of Soil and Crop Sciences Colorado State University USDA Forest Service Colegio de Postgraduados

This paper presents an approach based on field data to model the spatial distribution of the site productivity index （SPI） of the diverse forest types in Jalisco, Mexico and the response in SPI to site and cli-matic conditions. A linear regression model was constructed to test the hypothesis that site and climate variables can be used to predict the SPI of the major forest types in Jalisco. SPI varied significantly with topog-raphy （elevation, aspect and slope）, soil attributes （pH, sand and silt）, climate （temperature and precipitation zones） and forest type. The most important variable in the model was forest type, which accounted for 35% of the variability in SPI. Temperature and precipitation accounted for 8 to 9% of the variability in SPI while the soil attributes accounted for less than 4% of the variability observed in SPI. No significant differences were detected between the observed and predicted SPI for the individual forest types. The linear regression model was used to develop maps of the spatial variability in predicted SPI for the individual forest types in the state. The spatial site productivity models developed in this study provides a basis for understanding the complex relationship that exists between forest productivity and site and climatic conditions in the state. Findings of this study will assist resource managers in making cost-effective decisions about the management of individual forest types in the state of Jalisco, Mexico.

关键词： Best management practices climate change spatial predic-tions tropical dry forests weighted least squares

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：