检索结果-南通市图书馆

Different no-till grain production systems with Urochloa *** soil microbial community structure,biomass and activity in a tropical Ultisol

引用

Soil Ecology Letters 2024年第1期6卷 119-129页

作者： matheus emannuel oliveira vieira Lucas Dantas Lopes France Mario Costa Viviane Talamini Edson Patto Pacheco Marcelo Ferreira Fernandes PPGAGRI Universidade Federal de SergipeAv.Marechal Rondons/n-49100-000-Sao CristovaoSEBrazil Embrapa Coastal Tablelands Av Govemador Paulo Barreto de Menezesn°3250-49025-040-AracajuSEBrazil

Integrated grain cropping systems promote soil health(SH)and *** biomass and activity(MBA)and community structure(MCS)are key to *** of maize with Urochloa pastures strongly impacts MBA and *** is more sensitive than MCS to shifts in grain cropping *** under continuous Urochloa increased microbial activity and AMF *** soils are prone to *** of conservation agricultural practices is essential to improve soil health,which is influenced by soil *** this study we analyzed shifts in microbial biomass and activity(MBA)and microbial community structure(MCS)based on fatty acid methyl esthers(FAMEs)between five no-till agricultural practices:maize monoculture(MM);maize annualy intercropped with Urochloa decumbens(M/Ud);M/Ud with soybean rotation every other year(M/Ud-S);M/Ud keeping the pasture for the next two years(M/Ud-Ud-Ud);and maize intercropped with *** keeping the pasture for the next two years(M/Ur-Ur-Ur).Results indicated that MBA was affected by the inclusion of Urochloa intercropping and by rotation with *** under a longer residence time with Urochloa in the field had higherβ-glucosidase activity and soil basal respiration,indicating a greater microbial *** was less affected than MBA by the investigated cropping *** changed only in the continuous pasture systems,which were enriched in arbuscular mycorrhyzal fungi(AMF).Additionally,the continuous pasture systems had lower microbial stress ratios than the other agricultural *** sum,our study showed that utilization of Urochloa *** longer periods in no-till agricultural practices contributes to increase microbial activity,AMF abundance and decrease microbial stress *** changes are primarily beneficial for soil health.

关键词： crop-pasture integration crop rotation no-tillage soil health microbial ecology

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

Appendicitis in double cecal appendix: Case report

引用

World Journal of Clinical Cases 2014年第8期2卷 391-394页

作者： José Roberto Alves Ícaro Godeiro de oliveira Maranhão Patrick Vanttinny vieira de oliveira Department of Integrated Medicine University Hospital Onofre LopesFederal University of Rio Grande do Norte59012-300 Natal-Rio Grande do NorteBrazil University Hospital Onofre Lopes Federal University of Rio Grande do Norte59012-300 Natal-Rio Grande do NorteBrazil

Double cecal appendix is a rare anatomical variation. Approximately 100 cases have been reported worldwide. It is usually diagnosed incidentally during emergency appendectomies due to inflammatory processes in the cecal appendix. Case presentation: male, white, 36 years old, obese, presenting with pain in the lower abdomen for 24 h followed by nausea, vomiting and mild fever. He was subjected to additional tests, with the leukogram showing leukocytosis and abdominal ultrasonography depicting cecal appendix with thickened wall, locally associated with small quantities of liquid and intestinal loop obstruction. He underwent laparotomy, revealing acute appendicitis. Another intestinal loop obstruction was identified next to the ileum, leading to recognizing another cecal appendix after local dissection. Double appendectomy and segmental iliectomy were performed although not needed. Results of the anatomopathological examination of the surgical samples showed acute inflammation in the two cecal appendices. So, performing a routine retroperitoneal release and a complete cecum evaluation during such surgical procedures is recommended and suggested due to the possibility of not identifying a second cecal appendix.

关键词： Appendix Anatomic variation Appendicitis Appendectomy General surgery

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

Guidelines for Collection of Biological Samples for Clinical and Forensic Toxicological Analysis

引用

Forensic Sciences Research 2016年第1期1卷 42-51页

作者： Ricardo Jorge Dinis-oliveira Duarte Nuno vieira Teresa Magalhaes Department of Legal Medicine and Forensic Sciences Faculty of MedicineUniversity of PortoPortoPortugal Department of Sciences IINFACTS–Institute of Research and Advanced Training in Health Sciences and TechnologiesUniversity Institute of Health Sciences(IUCS)CESPUCRLGandraPortugal UCIBIO-REQUIMTE Laboratory of ToxicologyDepartment of Biological SciencesFaculty of PharmacyUniversity of PortoPortoPortugal Faculty of Medicine University of CoimbraPortoPortugal

This article aims to review general procedures for sampling of routinely collected as well as on alternative samples that may provide additional information regarding *** approaches may be applied whenever sample collection for clinical and forensic toxicology is required and should be considered as general guidelines that must be adapted to each specific *** is expected that this article will help toxicologists and other forensic experts to accomplish their mission,since the toxicological result is first influenced by the quality and quantity of the sample available for *** guidelines were approved by the European Council of Legal Medicine.

关键词： Forensic science forensic toxicology samples collection guidelines kits and labelling storage and preservation

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

Different culture conditions applied to in vitro shoot multiplication of two Eucalyptus benthamii explant sources

引用

Journal of Forestry Research 2020年第3期31卷 857-869页

作者： Natalia Pimentel Esposito-Polesi Leandro Silva de oliveira Francisco Jose Benedini Baccarin Cristina vieira de Almeida Marcilio de Almeida Biological Science Department "Luiz de Queiroz"Superior College of AgricultureUniversity of Sao Paulo(ESALQ/USP)Padua Dias Avenue11P.O.Box 9PiracicabaSP 13418-900Brazil Institute of Agriculture Sciences Federal University of Minas Gerais(UFMG)Universitaria Avenue1000Montes ClarosMG 39404-547Brazil State University of Goias(UEG) Rua S7Qd.1S SulPalmeiras de GoiasGO 76190-000Brazil In vitro Palm Consultoria Estudo e Desenvolvimento Biologico LtdaRua Itajobi421PiracicabaSP 13432-000Brazil

Eucalyptus adult material requires more successive subcultures in the in vitro multiplication phase for increased vigor and cellular activity. This study evaluated the endophytic manifestation and shoot multiplication of one 13-year-old Eucalyptus benthamii clone under different culture conditions and used canopy branches(CB) and trunk base material as explant sources. The culture media were wood plant medium(WPM), Murashige and Skoog medium(MS) and JADS(Correia and co-authors medium).Based on the results of the initial multiplication experiment, further tests examined sucrose concentrations and p H. Morphophysiology, dry mass production, endophyticmanifestation and histochemical were determined. Explant sources responded differently to MS and JADS media, but the WPM medium promoted homogeneous *** responses were similar for both explant sources when sucrose concentrations varied. Shoots died in the absence of sucrose, showed high oxidation at 60 g L-1 and optimal development at 30 g L-1. Endophytes were more evident for shoots from the CB origin. Explant sources responded distinctively to treatment due to physiological and intrinsic genetic factors. Therefore, explant sources, different culture media, sucrose concentration and p H may determine micropropagation success and influence the presence and/or intensity of endophytic manifestation.

关键词： Plant tissue culture Explant sources Culture media Sucrose pH

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

多色荧光碳量子点的合成及不同链长度烃的功能化改性（英文）

引用

新型炭材料 2017年第4期32卷 327-337页

作者： Kayo oliveira vieira Jefferson Bettini Luiz Fernando Cappa de oliveira Jefferson Luis Ferrari Marco Antonio Schiavon GrupodePesquisaemQuimicadeMaterials-(GPQM) DepartamentodeCienciasNaturaisUniversidadeFederaCampusDomBoscoPragaDomHelvecio74CEP36301-160SaoJoaodel-ReiMGBrazil LaboratorioNacionaldeNanotecnologia CentroNacionaldePesquisaemEnergiaeMaterialsCEP13083-970Campinas-SPBrazi NucleodeEspectroscopiaeEstruturaMolecular DepartamentodeQuimicaUniversidadeFederaldeJuizdeFora36036-330JuizdeForaMGBrazi

以多壁碳纳米管(MWCNTs)为原料,经肽键形成氨基功能化后合成出新型多色荧光碳量子点(CQDs)。所制CQDs由准球形石墨纳米晶体(平均尺寸为10 nm)包裹不同烃类,如丙胺、辛胺、十二胺和八乙胺得到的氨基。在CQDs表面引入氮原子和烃类对其荧... 详细信息

以多壁碳纳米管(MWCNTs)为原料,经肽键形成氨基功能化后合成出新型多色荧光碳量子点(CQDs)。所制CQDs由准球形石墨纳米晶体(平均尺寸为10 nm)包裹不同烃类,如丙胺、辛胺、十二胺和八乙胺得到的氨基。在CQDs表面引入氮原子和烃类对其荧光性能、量子产率和溶解性起重要影响。这种新型有机-溶解CQDs的荧光发射波长取决于激发波长。荧光量子产率根据CQDs表面上烃类取代物的链长而变化。

关键词：碳量子点碳纳米管荧光量子产率

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

Light intensity and hydrogel soil amendment differentially affect growth and photosynthesis of successional tree species

引用

Journal of Forestry Research 2023年第1期34卷 257-268页

作者： Léo vieira Leonel Fabrício de oliveira Reis Fábio Afonso Mazzei Moura de Assis Figueiredo Tiago Massi Ferraz Sebastiao de oliveira Maia Júnior Patrick Costa Silva Jailma Ribeiro de Andrade Graduate Program in Agroecology State University of MaranhaoAv.Lourenco Vieira da Silva1000Jardim Sao CristovaoSao LuísMaranhao 65055-310Brazil State University of Maranhao Av.Lourenco Vieira da Silva1000Jardim Sao CristovaoSao LuísMaranhao 65055-310Brazil Graduate Program in Agriculture and Environment State University of MaranhaoPraca Goncalves Diass/nCentroBalsasMaranhao 65800-000Brazil

Global climate changes have increased temperatures,radiation indexes,and consequently,irregularities in rainfall in mainly tropical countries,considerably hindering plant establishment in recovering degraded *** objective of this study was to evaluate the growth and physiological characteristics of one species of each successional group:pioneer,secondary,and climax when subjected to different light intensities and hydrogel as a soil conditioner during rainy and dry *** experiment was conducted in the ecotone between Brazil’s two largest biomes,the Cerrado and the Amazon in the State of Maranh?*** parameters consisted of three species:Guazuma ulmifolia Lam.(pioneer),Astronium fraxinifolium Schott(secondary),and Cariniana rubra Gardner ex Miers(climax).There were two light intensities:70%and 100%,and two planting conditions:with and without soil conditioner(hydrogel).Gas exchanges were higher during the rainy season;the pioneer and secondary species had greater heights and photosynthetic rates in the dry period;the climax species had the lowest gas exchange and lowest recovery as rainfall *** pioneer and secondary species showed higher physiological plasticity,denoting better adaption to environments with high *** improved the photosynthetic performance of these species in the dry season and in areas with 100%sunlight.

关键词： Irradiance Hydrogel Photosynthetic efficiency Physiological plasticity

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

An overview of geological originated materials as a trend for adsorption in wastewater treatment

引用

Geoscience Frontiers 2022年第1期13卷 457-477页

作者： Yasmin vieira Matias Schadeck Netto Éder C.Lima Ioannis Anastopoulos Marcos L.S.oliveira Guilherme L.Dotto Chemistry Department Federal University of Santa Maria-UFSM1000Roraima Avenue97105-900 Santa MariaRSBrazil Chemical Engineering Department Federal University of Santa Maria-UFSM1000Roraima Avenue97105-900 Santa MariaRSBrazil Institute of Chemistry Federal University of Rio Grande do Sul(UFRGS)P.O.Box 1500391501-970 Porto AlegreRSBrazil Department of Chemistry University of CyprusP.O.Box 20537CY-1678 NicosiaCyprus Universidad de Lima Avenida Javier Prado Este 4600-Santiago de Surco 1503Peru Department of Civil and Environmental Universidad de la CostaCalle 58#55-66080002 BarranquillaAtlánticoColombia

Adsorption is a unit operation widely used for the tertiary treatment of the most diverse effluents,whose mechanism is based on removing recalcitrant compounds from the organic and inorganic *** this process,choosing a suitable adsorbent is a fundamental *** review article focuses on the adsorbents with natural geological origin:minerals,clays,geopolymers,and even wastes resulted from mining ***,over 450 articles and research papers were *** materials’main sources are described,and their characteristics,composition,and intrinsic properties are related to ***,we discuss the effects of several process parameters,such as p H,temperature,pollutant,and adsorbent ***,equilibrium,kinetics,and thermodynamic aspects are also addressed,and relevant regeneration prospects and final ***,some suggestions and perspectives on applying these adsorbents in wastewater treatment are presented as future trends.

关键词： Adsorption Equilibrium Geological-based adsorbents Process parameters Wastewater treatment

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

Behavior of wood basic density according to environmental variables

引用

Journal of Forestry Research 2022年第2期33卷 497-505页

作者： Gabriel Marcos vieira oliveira JoséMárcio de Mello Carlos Rogério de Mello JoséRoberto Soares Scolforo Eder Pereira Miguel Thiago Campos Monteiro Brazil Institute of Agricultural and Forestry Defense of Espírito Santo(IDAF) Av.Lourival Lugon Moulinnº300CentroJerônimo MonteiroES CEP:29.550-000Brazil Department of Forestry Sciences Universidade Federal de Lavras-UFLACaixa Postal 3037LavrasMG CEP:37.200-000Brazil Engineering Department Universidade Federal de Lavras-UFLACaixa Postal 3037LavrasMG CEP:37.200-000Brazil Forestry Engineering Department Faculdade de TecnologiaUniversity of Brasilia-UnBCampus Universitário Darcy RibeiroCaixa Postal 4357Asa Norte-BrasíliaDF CEP:70910-900Brazil Department of Forestry Engineering and Technology Universidade Federal do Paraná-UFPRAv.Pref.Lothário Meissner632Jardim BotânicoCuritibaPR CEP:80.210-170Brazil

The relationships between climate conditions and wood density in tropical forests are still poorly *** quantify spatial dependence of wood density in the state of Minas Gerais(MG,Brazil),map spatial distribution of density,and correlate density with climate variables,we extracted data from the Forest Inventory of Minas Gerais for 1988 trees scaled throughout the territory and measured wood density of discs removed from the *** variables were extracted from the database of the Ecological-Economic Zoning of Minas *** spatial analysis,tree densities were measured at 44 georeferenced sampling *** data were subjected to exploratory analysis,variography,cross-validation,model selection,and ordinary *** relationships between wood density and environmental variables were calculated using dispersion matrices,linear correlation,and *** density proved to be highly spatially dependent,reaching a correlation of 96%,and was highly continuous over a distance of 228 *** distribution of wood density followed a continuous gradient of 514-659 kg m^(−3),enabling corre-lation with environment *** was correlated with mean annual precipitation(−0.57),temperature(0.63),and evapotranspiration(0.83).Geostatistical methods proved useful in predicting wood density in native tropical forests with different climate *** results confirmed the sensitivity of wood density to climate change,which could affect future carbon stock in forests.

关键词： Biomass Climate variables Geostatistics Hardwood Forest inventory Minas Gerais

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 age and different doses of dietary vitamin E on breast meat qualitative characteristics of finishing broilers

引用

Animal Nutrition 2021年第1期7卷 163-167页

作者： Vivian vieira Francielle O.Marx Lucas S.Bassi Marley C.Santos Alexandre Oba Simone Gisele de oliveira Alex Maiorka Federal University of Paraná Curitiba80035-050Brazil State University of Londrina Londrina86055-900Brazil

The supplementation of vitamin E on broiler chicken diets is essential to the prevention of lipid oxidation reactions in the meat and improvement of meat *** objective of this study was to assess the effect of different doses of dietary vitamin E on breast meat quality of broiler chickens in the finishing *** doses of vitamin E were used(30,90,150,210,and 270 mg/kg feed)in broilers'diets from 42 to 54 d of age.A completely randomized design was conducted,followed by a split-plot,where the vitamin E dose was considered as the whole plot,and broilers'age at slaughter was the *** meat quality was assessed at 4 different ages(45,48,51,and 54 d old),using 50 birds per age,totaling 200 *** quality characteristics evaluated were:pH at 24 h post mortem,color(brightness,redness,and yellowness),water holding capacity,cooking loss,shear force,and lipid *** was no interaction between age and dose of vitamin E for meat quality characteristics(P>0.05).The age at slaughter had a quadratic effect(P<0.05)on pH,brightness,redness,and water holding *** pH values were higher in the breast meat of older birds(51 and 52 d old),breast meat of younger birds(48 d)had a more reddish *** force value was higher in breast meat of birds slaughtered at later ages(P<0.01),as a linear age-effect was *** increased linearly(P<0.05)with higher vitamin doses,whereas treatments did not alter yellowness,cooking loss,and lipid *** this study,increasing vitamin E doses in the finishing period increased the brightness of broiler breast meat,whereas slaughtering at later ages resulted in greater meat pH and shear force value.

关键词： Alpha-tocopherol Broiler chicken Meat quality Oxidation Vitamin

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

In vitro antibacterial effect of aqueous and ethanolic Moringa leaf extracts

引用

Asian Pacific Journal of Tropical Medicine 2011年第3期4卷 201-204页

作者： Jackson Rafael oliveira Peixoto Giselle Cristina Silva Renata Albuquerque Costa Joseires Lira de Sousa Fontenelle Gustavo Hitzschky Fernandes vieira Antonio Adauto Fonteles Filho Regine Helena Silva dos Fernandes vieira Sea Sciences Institute Federal University of CearaBrazil Fisheries Engineering Department Federal University of CearaBrazil Federal University of Ceara Brazil Biology Department State University of Acarau ValleyBrazil

Objective:To evaluate the antibacterial effect of aqueous and ethanolic moringa leaf extracts (Moringa oleifera) on the growth of gram-positive and negative ***:Paper disks were soaked with 100,200,300 and 400μL of extract at 20 g/180mL and 10 g/190 *** extracts were tested against Escherichia coli(ATCC25922),Staphylococcus aureus(ATCC25923),Vibrio parahaemolyticus,Enterococcus faecalis(ATCC29212),Pseudomonas aeruginosa(ATCC27853), Salmonella enteritidis(IH) and Aeromonas *** susceptibility tests were performed using the modified disk diffusion ***:The strains ***,*** and *** (IH) were resistant to all *** general,disks with 400μL extract were the most efficient against ***,***,*** and ***:The study indicates a promising potential for aqueous and ethanolic Moringa leaf extracts as alternative treatment of infections caused by the tested strains.

关键词： Moringa oleifera Activity antibacterial Gram positive and negative bacteria

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：