检索结果-南通市图书馆

Effects of drying method on bioactive compounds contents,rumen fermentation parameters and in vitro methane output of waste dried País grape(Vitis vinifera L.)marc

引用

Food Bioscience 2023年第1期51卷 1324-1330页

作者： Sandra Tatiana Suescun-Ospina jorge avila-stagno Nelson Vera-Aguilera Rita Astudillo-Neira Igor Trujillo-Mayol Julio Alarcon-Enos Facultad de Ciencias Veterinarias Universidad de ConcepcionChillanChile Escuela de Ciencias Animales Universidad de los LlanosVillavicencioMetaColombia Centro de Estudios Agrícolas y Alimentarios Programa de Ciencia y Tecnología de AlimentosUniversidad del Valle de GuatemalaGuatemala CiudadGuatemala Departamento de Ciencias Basicas Grupo de Investigacion en Química y Biotecnología de Productos Naturales BioactivosFacultad de CienciasUniversidad del Bio BioChillanChile

Grape marc(GM)from País winery is an abundant resource with potential use in animal feed in Chile,but information on its chemical composition,bioactive compounds and enteric methane(CH4)emissions is not *** conditions could change the chemical composition and bioactive compounds of País GM,and affect CH4 ***,the objectives of this study were to assess the effects of drying conditions on the chemical composition and bioactive compounds of País GM,and rumen fermentation parameters and CH4 *** first experiment evaluated the effects of three drying conditions(freeze-drying,and oven drying at 40℃/72-h and 60℃/48-h)on the contents of bioactive compounds,antioxidant capacity and chemical composition of País *** second experiment evaluated and compared rumen fermentation parameters and CH4 output of dried País ***-dried País GM had the highest concentrations of phenolic compounds(p=0.001),but oven-dried País GM(60℃/48-h)showed the highest content of proanthocyanidins(p=0.043).Ash(p=0.003),ether extract(p=0.042)and non-fiber carbohydrate(p=0.033)contents were higher in oven-dried País GM,as opposed to neutral detergent fiber or acid detergent *** drying GM at 60℃/48-h reduced dry matter disappearance(p<0.001),and gas production(p=0.001),but also showed lower CH_(4)production(p<0.001)and yield(p=0.001)as compared to freeze dried *** suggest that oven-drying is useful to conserve GM chemical value,extend its’shelf-life and allows use of País GM as ruminant feed with potential positive environmental effects on enteric CH4 emissions but further in vitro and in vivo studies with GM as a dietary ingredient are required.

关键词： Wine by-products Bioactive compounds Mitigation Livestock

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

Alzheimer’s visual variant: a report of a diagnosis easily missed on ophthalmic examination

引用

International Journal of Ophthalmology(English edition) 2024年第8期17卷 1571-1575页

作者： jorge Cárdenas-Belaunzarán Lorena Wheelock-Gutierrez Karen A.Cerrillo-avila Department of Neuro-Ophthalmology Association to Prevent Blindness in MexicoI.A.P.Mexico City 04030Mexico Independent Researcher Mexico City 04040Mexico

Dear Editor,We present a case of posterior cortical atrophy(PCA),which is a syndromic entity caused by different neurodegenerative diseases,mainly Alzheimer’s disease,but it has been described in several other *** frequency is reported to be as high as 5%of all cases;however,it remains widely under-recognized among ophthalmologists and optometrists due to scarce reports in visual health-related journals[1].

关键词： diagnosis Alzheimer diseases

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

Numerical Study of Spray Dispersion in a Premixing Chamber for Low-NOx Engines

引用

Journal of Thermal Science 2000年第3期9卷 282-288页

作者： jorge Barata Andre Silva (Universidade da Beira Interior, Aerospace Sciences Department, Rua Marques d’avila e Bolama, 6200 Covilha, Portugal ) Aerospace Sciences Department Universidade da Beira Interior Covilhã Portugal

The present work describes a numerical study of a confined two-phase flow under high-pressure conditions, typical of gas turbine combustors. An Eulerian frame was used for the gas phase together with a Lagrangian approach to describe the dispersed phase. The computational method was extended to high-pressure environments, which are more representative of the practical gas turbine operating conditions. The results are compared with experimental data, and revealed the ability of the model to increase the knowledge of the turbulent dispersion phenomena for this type of practical conditions (high pressure and confined flow).

关键词： two-phase flows sprays high pressure.

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

Alginate modifies the physiological impact of CeO2nanoparticles in corn seedlings cultivated in soil

引用

Journal of Environmental Sciences 2014年第2期26卷 382-389页

作者： Lijuan Zhao Jose R.Peralta-Videa Bo Peng Susmita Bandyopadhyay Baltazar Corral-Diaz Pedro Osuna-avila Milka O.Montes Arturo A.Keller jorge L.Gardea-Torresdey Chemistry Department The University of Texas at El Paso 500 West University Avenue University of California Center for Environmental Implications of Nanotechnology The University of Texas at El Paso 500 West University Avenue Environmental Science and Engineering PhD program The University of Texas at El Paso 500 West University Avenue Department of Biological Sciences The University of Texas at El Paso 500 West University Avenue Universidad Aut'onoma De Ciudad Ju'arez Plutarco Elias Calles # 1210 Fovissste Chamizal. Ciudad Juarez Chihuahua 32310 Mexico Chemistry Department University of Texas of the Permian Basin Odessa Bren School of Environmental Sciences and Management 3420 Bren Hall University of California

Alginates are naturally occurring components of organic matter in natural soil whose effects on nanoparticle （NP） toxicity to plants is not well understood. In the present study, corn plants were grown for one month in soil spiked with 400 mg/kg CeO2 NPs with various alginate concentrations. After one month of growth in the NPs impacted soil, plants were harvested and analyzed for Ce and mineral element concentrations. Chlorophyll concentration and heat shock protein 70, used as biomarkers for oxidative stress, were also evaluated. Results showed that, compared to CeO2 NPs treatment, alginate at 10, 50, and 100 mg/kg increased Ce concentration in roots by approximately 46%, 38%, and 29% and by 115%, 45%, and 56% in shoots, respectively. CeO 2 NPs without alginate increased Mn accumulation in roots by 34% compared to control. CeO2 NPs with low and medium alginate increased Mn by ca. 92% respect to NPs without alginate and by ca. 155% respect to control. CeO2 NPs without/with alginate significantly increased accumulation of Fe and Al in roots. In addition, alginate at 50 mg/kg increased Zn accumulation in roots by 52% compared to control. In shoots, K increased at all NP treatments but the accumulation of other elements was not affected. Alginate enlarged the impact of CeO2 NPs to corn plants by reducing chlorophyll a content and triggering overexpression of heat shock protein 70.

关键词： CeO2 NPs alginate nutrient uptake chlorophyll heat shock protein

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

Effect of homogenization process on the hardness of Zn-Al-Cu alloys

引用

International Journal of Minerals,Metallurgy and Materials 2015年第10期22卷 1076-1081页

作者： Jose D.Villegas-Cardenas Maribel L.Saucedo-Munoz Victor M.Lopez-Hirata Antonio De Ita-De la Torre Erika O.avila-Davila jorge Luis Gonzalez-Velazquez Department of Metallurgy and Materials Instituto Politecnico Nacional(IPN-ESIQIE)Mexico City 07300Mexico Department of Industrial Engineering Universidad Politecnica del Valle de MexicoMexico CityMexico Department of Materials Universidad Autonoma Metropolitana(UAM)Unidad AzcapotzalcoMexico

The effect of a homogenizing treatment on the hardness of as-cast Zn–Al–Cu alloys was investigated. Eight alloy compositions were prepared and homogenized at 350 °C for 180 h, and their Rockwell 'B' hardness was subsequently measured. All the specimens were analyzed by X-ray diffraction and metallographically prepared for observation by optical microscopy and scanning electron microscopy. The results of the present work indicated that the hardness of both alloys(as-cast and homogenized) increased with increasing Al and Cu contents; this increased hardness is likely related to the presence of the θ and τ′ phases. A regression equation was obtained to determine the hardness of the homogenized alloys as a function of their chemical composition and processing parameters, such as homogenization time and temperature, used in their preparation.

关键词： zinc–aluminum–copper alloys casting hardness homogenization phases microstructure

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

Socio-spatial organization reveals paternity and low kinship in the Honduran white bat(Ectophylla alba)in Costa Rica

引用

Integrative Zoology 2021年第5期16卷 646-658页

作者： Edgar G.GUTIÉRREZ Isabela VIVAS-TORO Daniela CARMONA-RUÍZ David VILLALOBOS-CHAVES Bernal RODRÍGUEZ-HERRERA Melina Del REAL-MONROY Gloria LEÓN-avila jorge ORTEGA Laboratorio de Bioconservación y Manejo Posgrado en Ciencias QuimicobiológicasDepartamento de ZoologíaEscuela Nacional de Ciencias BiológicasInstituto Politécnico NacionalCiudad de MéxicoMéxico Department of Biology University of WashingtonSeattleWashingtonUSA Escuela de Biología Universidad de Costa RicaSan JoséCosta Rica Laboratorio de Genómica Evolutiva Doctorado en Ciencias BásicasUniversidad Autónoma de ZacatecasZacatecasZac.México Laboratorio de Genética Posgrado en Ciencias QuimicobiológicasDepartamento de ZoologíaEscuela Nacional de Ciencias BiológicasInstituto Politécnico NacionalCiudad de MéxicoMéxico

Ectophylla alba is a tent-making bat that roosts in mixed-sex clusters comprising adults and *** goal was to determine the genetic identity of individuals belonging to different roosting *** tested the hypothesis of kin selection as a major force structuring group *** used 9 microsatellites designed for *** to determine the genetic identity and probability of parentage of *** analyzed parentage and kinship using the software ML-Relate,GenAIEx,and *** obtained relationship probabilities(0.5)revealed a clear maternal relationship between female adults and offspring with allele compatibility,and at least 5 relationships between male adults and *** found a low degree of relatedness within roosting *** roosting groups at different sites,the mean probability of a half-sibling relationship ranged from 0.214 to 0.244 and,for full-sibling relationship,from 0.383 to ***,adult individuals were poorly related within clusters,and kinship as an evolutionary force could not explain group membership.

关键词： Ectophylla alba group composition kinship microsatellites relatedness

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

Does forest restoration influence soil infiltrability? A case study in the restored woodland of Sierra de ávila(Central Spain)

引用

Journal of Mountain Science 2021年第7期18卷 1778-1793页

作者： MONGIL-MANSO jorge NAVARRO-HEVIA Joaquín SAN MARTÍN Roberto Hydrology and Conservation Research Group Catholic University“Santa Teresa de Jesús”ofÁvilaÁvila 05005Spain Forest Water and Soil Research GroupPalencia 34004Spain Department of Agricultural and Forestry Engineering University of ValladolidPalencia 34004Spain Department of Statistics and Operations Research University of ValladolidPalencia 34004Spain

Infiltration,as a major component of the hydrological cycle,plays an important role in ecosystems,river flooding,and soil ***,this process has been studied on different soils,with different vegetation cover,and under different climate ***,it is still necessary to know how infiltration rates depend on land degradation,vegetation cover,forest management,and forest restoration,since soil infiltration is related to soil hydrological function and hydrological ecosystem *** aim of our study is to analyze the way reforestation and check dam construction have helped to improve soil infiltration rates in comparison with old,degraded land,different soils and vegetation covers in Central ***,three infiltration tests were carried out by means of a simple methacrylate infiltrometer ring,in four sampling plots,for five types of land use:(i) native holm oak forest,(ii) 60-year-old reforested pine wood,(iii) shrubs,(iv) sediment wedges of check dams,and(v) gullies and degraded *** results show much higher infiltration rates in the soil of 60-yearold pine reforestation sites(1198.00 mm·h^(-1)),and in the sediment wedges of check dams(1088.00 mm·h^(-1)),than in those of degraded hillslopes(365.00 mm·h^(-1)) and shrubland(420.80 mm·h^(-1)).The rates were also shown to be close to those from the remaining patches of native holm oak woodland(770.40 mm·h^(-1)).We also found that organic matter,humus and litter depth,and height of vegetation and cover,all improve soil infiltration rates,while slope degree,presence of coarse elements,stoniness,clay content,bulk density,and electric conductivity inhibit the *** was additionally seen that pine reforestation and check dam construction caused degraded land to recover its hydrological conditions to a level that is quite close to that of the ancient oak holm native forest,alongside ameliorating the hydrological cycle in the *** information will be very useful for decisi

关键词： Soil hydrology Permeability Runoff Reforestation Land restoration

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

Characterization of Chemical Bath Deposited CdSe Thin Films Doped with S^2-

引用

材料科学与工程（中英文B版） 2011年第5期1卷 657-666页

作者： jorge Indalecio Contreras Rascon Oscar Portillo Moreno Gustavo Abarca avila jorge R. Cerna Juan Hernandez Tecorralco Javler Martinez Juare Rosendo Lozada Morales Orlando Zelaya Angel CIDS-ICUAP Benemerita Universidad Autonoma de Puebla 14 Sur y Av. Sn. Claudio Col. Sn. Manuel Puebla Pue. Mexieo Facultad de Ciencias Quimicas Benemerita Universidad Autonoma de Puebla 14 Sur y Av. Sn. Claudio Col. Sn. Manuel Puebla Pue. Mexico Facultad de Ciencias Fisicomatematicas Postgrado en Optoelectroniea Benemerita Universidad Autonoma de Puebla 14 Sur y A v Sn. Claudio Col. Sn. Manuel Puebla Pue. Mexico Departamento de Fisiea del Centro de Investigacion y de Estudios Avanzados del IPN 07360 Mexico D. F. Mexico

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

Vibration Control of a Gym Floor Using Tuned Mass Dampers: A Numerical Analysis

引用

Modern Mechanical Engineering 2013年第3期3卷 9-16页

作者： Marcos Daniel Souza dos Santos Daniel Valenca Fiuza Lima jorge Eliécer Campuzano Carmona Suzana Moreira avila Graciela Nora Doz de Carvalho Departamento de Engenharia Civil e Ambiental Faculdade de TecnologiaUniversidade de BrasiliaBrasiliaBrasil

This work presents a study on excessive vibration problem occurring on concrete slabs, usually used on residential and commercial building floors. Even well designed slabs, according to ultimate and serviceability limit states criteria, can be vulnerable to undesirable vibrations that lead to user discomfort. A gym floor, that presented real excessive vibrations, located in a commercial building situated in the city of Brasilia,Brazil, was analyzed via Finite Element Method using ANSYS software. The first step in this analysis was to obtain natural frequencies and vibration modes, the structure presented low natural frequencies representing its flexible behavior. Then it was simulated a dynamic loading of people jumping, characteristic of this type of building occupation. Since it was observed the occurrence of excessive vibrations also in the numerical analysis, a Tuned Mass Damper (TMD) control system was proposed, looking for the best set of dampers to improve the control performance. The parameters for the best vibration reduction were obtained via a parametric study considering four different slabs varying dimensions and support conditions. Different models considering one and more TMDs, varying its placements and parameters, besides the frequency reference value to tune the damper were considered. An efficient control solution to this practical problem is presented to reduce its undesirable vibrations.

关键词： Structural Dynamics Structural Control Concrete Slabs Tuned Mass Damper

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

Characterization of Chemical Bath Deposited CdS, CdSe and PbS

引用

材料科学与工程（中英文A版） 2011年第5X期1卷 692-704页

作者： Oscar Portillo Moreno Gustavo Abarca avila jorge R. Cerna Juan Hernandez Tecorralco Melissa Chavez Portillo Javier Martinez Juarez Rosendo Lozada Morales Orlando Zelaya Angel Facultad de Ciencias Quimicas Benemerita Universidad Autonoma de Puebla Mexico Col. Sn. Manuel Puebla Pue. Mexico CIDS-ICUAP Benemerita Universidad Autonoma de Puebla Mexico. Col. Sn. Manuel Puebla Pue. Mexico Fac. Ciencias Fisicomatematicas Postgrado en Optoelectronica Benemerita Universidad Autonoma de Puebla Mexico Col. Sn Manuel Puebla Pue. Mexico Departamento de Fisica Centro de Investigacion y de Estudios de Estudios Avanzados del IPN 07360 Mexico D. F. Mexico

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

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：