检索结果-南通市图书馆

Isolation and Characterization of Mercury Resistant Trichoderma Strains from Soil with High Levels of Mercury and Its Effects on Arabidopsis thaliana Mercury Uptake

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Microbiology 2018年第7期8卷 600-613页

作者： JoséLuis Hernández-Flores JoséGerardo Bernal Melo Andrés cruz Hernández Miguel A.Ramos López Carlos Saldana Gutiérrez Sergio Romero Gomez victor Pérez Moreno Rosa P.Calvillo Medina JoséHumberto Valenzuela Soto Sergio Pacheco Hernández George H.Jones Sergio Casas Flores Juan Campos-Guillen Laboratorio de Bioseguridad y Análisis de Riesgo Departamento de Ingeniería Genética de PlantasCentro de Investigación y de Estudios Avanzados del IPNIrapuatoGto.México Facultad de Química Universidad Autónoma de QuerétaroCerro de las Campanas s/nQuerétaroQro.México Escuela de Agronomía Universidad De La Salle Bajíocampus Campestre.LeónGto.México Facultad de Ciencias Naturales Universidad Autónoma de QuerétaroAv.De las Ciencias S/NQuerétaroQro.México Centro de Investigación en Química Aplicada Blvd.Enrique Reyna Hermosillo No.140SaltilloCoahuilaMéxico Department of Biology Emory UniversityAtlantaGeorgiaUSA IPICYT División de Biología Molecular.Camino a la presa San JoséNo.2055Colonia Lomas 4a sección.C.P.San Luis PotosíMexico

Traditional mining activities are usually correlated with high levels of soil pollution, which is a major environmental concern. Extensive mining activities have taken place in the San Joaquin region in the State of Querétaro, México resulting in high levels of mercury soil pollution (up to 1532 ± 300 mg/kg). We isolated mercury-resistant fungal strains from the San Joaquin region soils and identified them through morphologic characteristics and ITS rDNA region sequence analysis. We determined that fungi isolated belong to the genus Trichoderma. All the isolates selected showed the ability to catalyze the volatilization of Hg. For air sampling, an active sampling device was constructed and using acid KMnO4 as an absorbent, the concentration of mercury in solution was determined through the cold vapor atomic absorption method. The results show mercury volatilization from the fungal species assay, with a maximum of 213.04 ± 32.6 μg/m3 while mycelium accumulation ranged from less than 17.5 ± 2.9 to 20.0 ± 3.4 μg/g. The fungal isolates were also evaluated for their ability to reduce mercury uptake in Arabidopsis thaliana. These observations suggest the utility of Trichoderma for the mobilization of mercury in those contaminated soils.

关键词： Volatilization Mercury Trichoderma Soil Bioremediation

High Roughness Time Series Forecasting Based on Energy Associated of Series

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

通讯和计算机（中英文版） 2012年第5期9卷 576-586页

作者： Cristian Rodriguez Rivero Rafael Martin Herrera Julian Anatonio Pucheta Josef Sylvester Baumgartner Hector Daniel Patino victor hugo Sauchelli Departments of Electrical and Electronic Engineering Mathematics Research Laboratory applied to ControlNational University of C6rdobaVelez Sarsfield Av.1611Argentina

In this study, an algorithm to adjust parameters of high roughness time series based on energy associated of series using a feed-forward NN-based model is presented. The criterion for adjustment consists of building time series values from forecasted time series area and taking into account the roughness of series. These values are approximated by the NN to make a primitive calculated as an area by the predictor filter used as a new entrance. A comparison between this work and another that involves a similar approach to test time series prediction, indicates an improvement for certain sort of series. The NN filter output is intended to approximate the current value available from the series which has the same Hurst Parameter as the real time series. The proposed approach is tested over five time series obtained from samples of Mackey-Glass delay differential equations (MG). Therefore, these results show a model performance for time series forecasting and encourage to be applied for meteorological variables measurements such as soil moisture series, daily rainfall and monthly cumulative rainfall time series forecasting..

关键词：时间序列预测模型能源使用粗糙度神经网络模型 Hurst参数预测滤波器延迟微分方程调整参数

Highly efficient multi-metal catalysts for carbon dioxide reduction prepared from atomically sequenced metal organic frameworks

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2021年第2期14卷 493-500页

作者： Celia Castillo-Blas Consuelo Alvarez-Galvan Ines Puente-Orench Alba Garcia-Sanchez Freddy E.Oropeza Enrique Gutirrez-Puebla Angeles Monge victor A.de la Pena-O'hea Felipe Gandara Materials Science Institute of Madrid(CSIC) C/Sor Juana Ines de la Cruz 3Madrid 28049Spain Instituto de Catalisis y Petroleoquimica(CSIC) dM arie Curie 2Madrid 28049Spain Instituto de Ciencia de Materiales de Aragon Pedro Cerbuna 12Zaragoza 50009Spain Institut Laue Langevin 71 Avenue des Martyrs38042 GrenobleFrance Photoactivated Processes Unit IMDEA Energy Institute Mostoles Technology ParkAvenida Ramdn de la Sagra 3MostolesMadrid 28935Spain Department of Inorganic Chemistry University Autonomous of MadridC/Frandsco Tomdsy Valiente 7Madrid 28049Spain

The precise control on the combination of multiple metal atoms in the structure of metal-organic frameworks(MOFs)endowed by reticular chemistry,allows the obtaining of materials with compositions that are programmed for achieving enhanced *** present work illustrates how through the transformation of MOFs with desired arrangements of metal cations,multi-metal spinel oxides with precise compositions can be obtained,and used as catalyst precursor for the reverse water-gas shift *** differences in the spinel initial composition and structure,determined by neutron powder diffraction,influence the overall catalytic activity with changes in the process of in s itu formation of active,metal-oxide supported metal nanoparticles,which have been monitored and characterized with in situ X-ray diffraction and photoelectron spectroscopy studies.

关键词： reticular chemistry multi-metal metal-organic frameworks(MOFs) carbon dioxide reduction heterogeneous catalysis reverse water-gas shift in-situ X-ray photoelectron spectroscopy(XPS)

Mexican Guidelines for the Diagnosis and Treatment of Chronic Myeloid Leukaemia

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 Cancer Therapy 2013年第3期4卷 747-764页

作者： Eduardo Cervera Federico Godínez Rosa Sosa Ramón Rivas Carlos Best Juan Hernández Adrián Morales hugo Zurita Ivette Carrasco Jorge cruz álvaro Aguayo José Espinoza Juan Labardini Luis Valero Judith cruz Diana Arcos Diego Limón Omar López-Navarro Daniela Gordillo-Bastidas Myrna Candelaria Francisco Torres Juan Kassack Oscar de Jesús Pérez Ramírez Jorge Aquino Guillermo Díaz Mariela Cardiel Margarita Rodríguez Patricia Montoya Juan Contreras María Chávez Sandra Chávez David Gómez Olga Cantú Jorge Duque Luis Pita Eduardo Lobato Julio López Antonio López Pedro González Jorge Cortés Haematology and Oncology Department National Institute of Medical and Nutrition Sciences “Dr. Salvador Zubirán” Mexico City Mexico Haematology Deparment from Hospital Juárez Mexico City Mexico Haematology Department Blood Bank and Unit of Aphaeresis General Hospital of Culiacán Health Ministry Culiacán Mexico Haematology Department Bone Marrow Transplant and Blood Bank from Hospital Regional de Alta Especialidad “Dr. Juan Graham Casassus” Villahermosa Mexico Haematology Department Cancerology National Institute (INCan) Mexico City Mexico Haematology Department Cancerology National Institute (INCan) Mexico City Mexico 2Internal Medicine Haematology Hospital ISSSTECALI Tijuana Mexico Haematology Department Centenario Hospital Miguel Hidalgo Health Ministry Aguascalientes Mexico Haematology Department General Hospital of Sonora State Sonora Mexico Haematology Department Hospital Universitario UANL Monterrey Mexico Haematology Haematology Service Hospital General Regional SSG León Mexico Haematology Head of Haematology Service School of Medicine Autonomous University of San Luis Potosí San Luis Potosí Mexico Haematology Hospital “Aranda de la Parra” León Mexico Haematology Hospital General de Especialidades Campeche Mexico Haematology Hospital General de México Mexico City Mexico Haematology Hospital General de Occidente SSA Guadalajara Mexico Haematology Hospital Regional de Alta Especialidad de Oaxaca Oaxaca Mexico Haematology Mérida Clinic Yucatán Mexico Haematology Oncology Unit SSEP Puebla Mexico Hospital Betania Puebla Mexico Hospital of the Poblano Child Puebla Mexico Internal Medicine Haematology Hospital ISSSTECALI Tijuana Mexico Leukaemias Clinic at ISSEMyM Toluca Mexico Leukemia Department MD Anderson Cancer Center Houston Mexico Los Mochis General Hospital Sinaloa Mexico Renaissance Clinic Morelia Mexico State Council for AIDS Prevention and Control Chihuahua Mexico Universidad Autónoma de Yucatán Mérida Mexico

Background: This document includes recommendations and guidelines issued by a group of Mexican researchers and specialists gathered in the First National Colloquium for the Diagnosis and Management of Chronic Myeloid Leukaemia (CML) by initiative of Instituto Nacional de Cancerología and with the support of the Leukaemia Department of the MD Anderson Cancer Center. Mexico lacks of updated information taken from its own reality on the diagnosis and treatment of CML and other haematological disorders;besides, there are no national guidelines. Aim: To publish a consensus document with guidelines for the management of CML adjusted to the national environment and overall characteristics. Method: The participants answered a DELPHI questionnaire about the overall aspects of the disease, aiming to target controversial topics, discuss them in the colloquium, and to agree on the best ones. After those meetings, a final document was drawn up. Results: The group presents recommendations for definition, diagnosis, prognosis, monitoring, and treatment of CML in Mexico. Conclusions: Having consensus guidelines for the clinical management of CML in our country will enable the consensual practice of Mexican specialists regarding the clinical approach to CML, as well as optimize the resources which allow the rational planning of the medical care strategies.

关键词： Chronic Myeloid Leukaemia Management Guidelines Diagnosis Treatment.

Description of the Factors Associated with Trigger Finger in Patients Treated at Petroleos Mexicanos “Pemex”

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 Biosciences and Medicines 2023年第7期11卷 151-159页

作者： Fernando Barbosa-Villarreal Cuahutémoc Márquez-Espriella Rodrigo Dávila-Díaz Marco A. Cuervo-Vergara Blanca Y. Arambula-Sánchez Alberto I. Cahuana-Quispe victor A. Esquivel-Chávez Carlos E. García-Córdova Ana P. Campollo-López Mauricio Gutierrez-Alvarez Jesus R. García-Corral Alfredo Chama-Naranjo Daniel de Luna-Gallardo Ricardo A. Pulido-López Isaac F. Recio-España Esteban I. Campos-Serna Carlos I. Navarro-Delgadillo José C. Martínez-López victor H. Avalos-Gómez Alejandro cruz-Zarate Department of Plastic and Reconstructive Surgery Hospital Central Sur Petróleos Mexicanos Mexico City Mexico

Background: The trigger finger, also known as stenosing tenosynovitis of the flexor tendon, is a common cause of hand disability;This can result in significant limitations in certain daily living activities. It is possible to treat this condition with conservative or surgical methods. Methods: This is a retrospective, observational, cross-sectional and descriptive study. The source population consisted of all patients with a diagnosis of trigger finger who had been treated in the department of plastic and reconstructive surgery of our institution between 2020 and 2023. The primary objective of this study is to determine the prevalence and characterize the clinical and surgical characteristics of the population affected by trigger finger in our hospital. Results: The total population was 237 patients, of which 165 were women (70%) and 72 men (30%). The most affected hand was the right hand, with a total of 158 patients (67%). In the right hand, the middle finger was the most affected (45%). Of the 237 patients, 80 of them had obesity (34%), 86 had type 2 diabetes mellitus (36%), 95 had systemic arterial hypertension (40%). Open technique was performed in 190 (80%) patients, while percutaneous technique was performed in 47 (20%) of them. Conclusion: The female sex was twice as frequent, and the middle finger and thumb were the most affected. Most of the patients received surgical treatment with open approach and percutaneous approach in 20% of them.

关键词： Trigger Finger Tendinopathy

Analysis and Prediction of Risks From Rockfall in the Huancavelica City

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 Environmental Science and Engineering(A) 2019年第5期8卷 203-215页

作者： Ivan Ayala Bizarro victor Paitan Sedano Edman Ventura Sullca Marco Lopez Barrantes hugo Lujan Jeri Abdon Olivera Quintanilla Jorge Ortega Vargas Carlos Gaspar Paco Department of Civil Engineering National University of HuancavelicaHuancavelica 09001Peru

This research refers to the analysis and prediction of rockfall risk,whose objective is to determine the results of the validation of the model and application of modeling in the Rocfall Software,in this way to prepare the map of risk ***,the general problem was identified:What are the results of the analysis and prediction of risks from rockfall in the city of Huancavelica?To respond to the problem posed,the following steps were carried out:obtaining field information with Drone equipment and using photogrammetric processes the topography of the study area was obtained,identification of unstable areas,trajectories,traces of the previously occurred landslides and five geomechanical *** specific weight of eight rock samples in the laboratory of the National University of Huancavelica was also calculated,which served to obtain the weight of the large-scale rock *** addition,the normal and tangential restitution coefficients were calibrated,that is,field *** the data were obtained,modeling was carried out by applying the Rocfall software,whose results of ten trajectories were:final distance reached,bounce height,kinetic energy and translational *** these values,risk maps have been prepared,taking into account the areas of housing vulnerability in the city of ***,it is proposed to mitigate these risks of rockfall,with dynamic barriers,which is important for the security of housing in the analysis sectors.

关键词： Risk prediction rockfall trajectory simulation