检索结果-南通市图书馆

Growth and nutrient accumulation of Brazil nut trees(Bertholletia excelsa) in agroforestry at different fertilizer levels

引用

Journal of Forestry Research 2015年第2期26卷 347-353页

作者： Gotz Schroth maria do Socorro souza da Mota maria Elizabeth de assis Elias C.P. 513 Santarem PA 68109-971 Brazil Centro de Estudos Avanqados de Promoqao Social e Ambiental Av. Mendonqa Furtado 3979 Santarem PA 68040-050 Brazil Universidade Federal do Amazonas Manaus AM 69077-000Brazil

The Brazil nut tree（Bertholletia excelsa） is a frequent component of agroforestry systems in the Amazon because of its adaptation to nutrient-poor upland soils and multiple *** investigated the aboveground biomass production（kg dry weight）,nutrient uptake and requirements（N,P,Ca,Mg,K） of Brazil nut trees of different sizes grown under agroforestry conditions and fertilized at different *** of 70 experimental trees with different size were harvested and stem,branches and leaves were *** contents were determined for three trees of varying *** tree growth was fast,but variability was high,suggesting considerable potential for the improvement of this economically important *** trees responded to increased levels of fertilizer and lime with significantly increased foliar nutrient contents and growth,probably because of the improved availability of Mg and Ca for which the species seems to have a relatively high *** contrast to Brazil nut trees grown in forest or dense plantations,the agroforestry trees invested a substantial part of their biomass and nutrients in large branches and developed spreading *** improve stem form,reduce competition with associated crops for light and recycle nutrients,regular pruning of lower branches or planting arrangements that favor self-pruning are *** measures would also increase the recycling of Ca and Mg,large quantities of which are contained in the branches.

关键词： Allometric equation Amazon Nutrient competition Nutrient recycling Plant mineral nutrition Soil fertility Silviculture

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

Apparent soil electrical conductivity in the delineation of management zones for cocoa cultivation

引用

Information Processing in Agriculture 2022年第3期9卷 443-455页

作者： Samuel de assis Silva Railton Oliveira dos Santos Daniel Marcal de Queiroz Juliao Soares de souza Lima Levi Fraga Pajehua Caique Carvalho Medauar Center for Agricultural Sciences and Engineering Federal University of Espirito SantoAlegre CampusEspirito Santo 29500-000Brazil Department of Agricultural Sciences Santa Cruz State UniversityIlheusBahia 45662-900Brazil Department of Agricultural Engineering Federal University of Vic¸osaVic¸osaMinas Gerais 36570-900Brazil

Apparent electrical conductivity is an important parameter for describing the spatial vari-ability of physical and chemical attributes of the soil and for the delineation of manage-ment *** objective of this work is to outline management zones for the cocoa cultivation based on the spatial variability of the productivity and the apparent electrical conductivity(ECa)of the *** collection was performed in a regular sample grid con-taining 120 points in an area cultivated with cocoa trees,located in the municipality of Ilhe´us,state of Bahia,*** each sampling point(cocoa tree),soil samples were col-lected to determine chemical *** was measured for one year,counting,monthly,the number of fruits,which were classified into off-season cocoa,harvest and annual *** of the apparent electrical conductivity of the soil were performed at different times of the year using a portable conductivity *** data were analyzed using classical statistics and *** management zones were delin-eated using the fuzzy k-means *** ideal number of class was defined using the fuzziness performance index(FPI)and the entropy of the modified partition(MPE)*** Kappa coefficient was used to validate the management zones,assessing their agreement with the chemical attributes of the *** ECa of the soil values pre-sented moderate temporal variation,with maximum amplitude of 19.37 mS m1 and min-imum of 0.82 mS m1 between measurement periods;higher averages of the ECa coincided with the highest levels of water in the *** measurements of the ECa of the soil carried out in April and October showed greater correlation with the chemical attributes of the soil,with significant values for 11 and 8 of the 17 attributes evaluated,*** man-agement zones from the ECa measured in April showed:a)reduced number of classes;b)spatial continuity between classes,and;c)agreement from reasonable(kappa between

关键词： Theobroma cacao Precision agriculture Spatial variability Fuzzy k-means

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

High-Performance Macrotia Surgery

引用

Modern Plastic Surgery 2022年第4期12卷 61-75页

作者： Marcelo souza assis Gabriel Rosas Leila Souto Miranda Department of Plastic Surgery Orelhinha Institute Campinas Brazil Department of Anesthesia Orelhinha Institute Campinas Brazil Orelhinha Institute Campinas Brazil

Many articles report that macrotia is a rare ear deformity, but this is not the reality that we encounter in our service. In accordance with anthropometric studies of the ears, we consider that an aesthetically normal ear measures 6.0 cm in length on the vertical axis and 3.7 cm on the horizontal axis in boys, with ear growth maturing at 13 years of age, and 5.91 cm in length on the vertical axis and 3.37 cm on the horizontal axis, with ear growth maturing at age 12 in girls. When the measurements exceed these averages, we consider that the patient has macrotia. The authors describe a new technique of surgical correction of macrotia that results in an average reduction of 1.7 cm on the vertical axis and 0.8 cm on the diagonal axis with an average surgical time of forty-five minutes, fast learning curve, and little scarring. This technique also allows it to be combined with otoplasty and correction of the lobe length. Because of these items we call the technique High-Performance Macrotia Surgery. Level IV: Evidence is obtained from multiple time series with or without the intervention, such as case studies.

关键词： Ear Acquired Ear Deformities Ear Cartilage Ambulatory Surgical Procedures Macrotia Plastic 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

Can Persistent Children Hyperglycemia Be Induced by Causes Other Than Pancreas Failure?

引用

Open Journal of Endocrine and Metabolic Diseases 2022年第7期12卷 135-158页

作者： Altair souza De assis João Luiz Pinto Da Nobrega Cooperation Center for the Development of Children and Adolescents (CCDIA) Project Directorate Niterói Brazil

In this work, children’s persistent hyperglycemia has been revised using the available literature to support the proposed reasoning. Based on this study, we have shown that the human glycemic management system must be seen as coupled and integrated by four subsystems, namely, production system, consumption system, distribution system, control system, and also it should be seen as coupled to external noxious factors/stressors, if not we show that the glycemic homeostasis analysis might be defective and might induce, in many cases, a misdiagnosis of the causes of the persistent hyperglycemia under consideration. Also, in this work, some considerations were presented to show that anomalies in the cerebral glycemic control through the glucose sensor neurons might be a possible cause/origin of some of the glycemic abnormalities and dysfunctions (however, not only the known related hypoglycemia but also hyperglycemia) that occur in childhood. Finally, it is shown that persistent novel external noxious factors of modernity or noxious factors already known, but amplified by modernity, such as persistent stress, media induced fears, and phobias, environmental pollution, and electromagnetic pollution, can and should also be considered as possible precursors for the development of anomalies in the juvenile homeostatic glycemic system that might well be, if intense and persistent, the driver of the worldwide observed T1DM epidemic events.

关键词： Juvenile Persistent Hyperglycemia Body’s External Noxious Elements Glycemia’s Sensor Neurons Homeostasis Euglycemia

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

Photoluminescence emissions of Ca_(1-x)WO_(4):xEu^(3+):Bridging between experiment and DFT calculations

引用

Journal of Rare Earths 2022年第10期40卷 1527-1534页

作者： Amanda Fernandes Gouveia Marcelo assis Lara Kelly Ribeiro Aline Estefany Brandao Lima Eduardo de Oliveira Gomes Daniele souza Yara Gobato Galvao Ieda Lucia Viana Rosa Geraldo Eduardo da Luz Jr Eva Guillamón Elson Longo Juan Andrés Miguel Angel San-Miguel Department of Physical and Analytical Chemistry University Jaume I(UJI)12071CastelloSpain Institute of Chemistry State University of Campinas(Unicamp)13083-970CampinasSPBrazil CDMF Federal University of S?o Carlos(UFSCar)P0.Box 67613565-905Sao CarlosSao PauloBrazil Departamento de Química Federal University of Piauí(UFPI)64049-550TeresinaPiautBrazil Physics Department Federal University of S?o Carlos(UFSCar)P.0.Box 67613565-905Sao CarlosSao PauloBrazil

In this work,the impact of the doping process on the photoluminescence emission of CaWO_(4) as a function of the concentration of Eu^(3+) cation(0.01 mol%,0.02 mol%,0.04 mol%,0.06 mol%,0.08 mol%,and 0.10 mol%) is discussed in ***_(1-x)WO~4:xEu^(3+) samples were successfully synthesized by a simple coprecipitation method followed by microwave *** blue shift in the absorption edge confirms the quantum confinement effect and the band gap energy covers the range from 3.91 to 4.18 eV,as the amount of Eu^(3+) cations *** experimental results are sustained by first-principles calculations,at the density functional theory level,to decipher the geometry and electronic properties,thereby enabling a more accurate and direct comparison between theory and experiment for the Ca_(1-x)WO_(4):xEu^(3+) structure.

关键词： Ca_(1-x)WO_(4):xEu^(3+) DFT calculations Photoluminescence emissions Rare earths

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

Evaluation of the Size and Location of the Genial Plexus,Related to Age,Sex and Dental Presence,in Implant Surgeries

引用

Journal of Biomedical Science and Engineering 2017年第10期10卷 456-465页

作者： Joao Henrique Scotti Alerico neuza maria souza picor.lli assis Carlos Eduardo Francischone Karina Lopes Devito Francisco Antoninho Alerico Bruno Salles Sotto-Maior Department of Implantology Sao Leopoldo Mandic Dental Research CenterSao LeopoldoBrazil Department of Dental Clinic Federal University of Juiz de ForaJuiz de ForaBrazil Department of Diagnosis Paranaense UniversityFrancisco BeltraoBrazil Department of Restorative Dentistry Federal University of Juiz de ForaJuiz de ForaBrazil

Generally being considered as a safe area for surgical approaches, the region between the mental foramina presents important anatomical structures. The objective of this study was to measure the dimensions of the genial plexus and its three-dimensional location in CBCT images, correlating the characteristics of this structure with dental presence, sex and age of patients. A total of 149 cone beam computer tomography (CBCT) scans of dentate (n = 74) and edentulous patients (n = 75) were selected, 59 male and 90 female, aged 18 - 86 years. Measurements of width and length of the genial canal were performed, and the shortest distances of the genial plexus were determined in relation to the alveolar bone crest, the buccal cortical bone and the base of the mandible. The results indicated significant differences between the dentate and edentulous groups for the mandibular canal length (p = 0.030), distance from alveolar crest (p < 0.001), and distance from buccal cortical bone (p < 0.001), with significantly higher values in dentate patients. As for gender, the distances between the genial plexus and the alveolar bone crest (p < 0.001) and the buccal cortical bone (p = 0.028) were significantly shorter for females. Regarding age, only the distance between the genial plexus and the alveolar crest showed a significant difference (p < 0.001), and the smallest values were measured in the older patients. It can be concluded that there are variations of the genial plexus in relation to gender, age and between edentulous and dentate patients. Therefore, the anterior region of the mandible, especially the midline should be observed with caution when undergoing surgical procedures, such as removal of bone grafts and installation of dental implants.

关键词： Genial Canal Cone-Beam Computed Tomography Dental Implants Measurement Paresthesia

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

Structure and genetic diversity of natural populations of Guadua weberbaueri in the southwestern Amazon,Brazil

引用

Journal of Forestry Research 2021年第2期32卷 755-763页

作者： Glória da Silva Almeida Leal Fabrício assis Leal Hugo Teixeira Gomes Anderson Marcos de souza Sabina Cerruto Ribeiro Jonny Everson Scherwinski-Pereira Centro Multidisciplinar Universidade Federal do AcreCruzeiro do SulAcreBrazil Universidade de Brasília BrasíliaDistrito FederalBrazil Centro de Ciências Biológicas e da Natureza Universidade Federal do AcreRio BrancoAcreBrazil Centro de Pesquisa e Aplicação de Bambu e Fibras Naturais Universidade de Brasília–CPAB/UnBBrasíliaDistrito FederalBrazil Embrapa Recursos Genéticos e Biotecnologia Av.W5 Norte(final)PqEBBrasíliaDistrito Federal 70770-917Brazil

The Brazilian state of Acre has an extensive natural reserve of bamboo,making it one of the largest in loco gene *** aim of this study was to characterize the structure and genetic diversity of Guadua weberbaueri *** two populations,one native(FAPB)and the other anthropized(FAPBA),using ISSR *** results show that the FAPB population exhibited higher values for all estimates of population ***,the FAPBA population also showed high heterozygosity,corroborated by estimated gene flow(Nm=3.9)between the *** study of the association between Nei’s genetic distances and the geographic distances between the populations were significantly correlated(r=0.45,p=0.01),corroborated by the dendrogram revealing two distinct groups corresponding to the collection sites,without mixing classes between populations in the same *** for the coancestry coefficient,pairs of individuals in the first distance class were positive and significant,indicating that plants that are geographically closer share common alleles with a frequency greater than by chance,which means that there is a tendency that geographically closer individuals are *** presented similar genetic structure when the geographical distance between them was up to 56 m for FAPB and up to 156 m for *** was concluded that anthropized environments exhibit less genetic diversity than native environments,inferring risks for species conservation if appropriate and planned management techniques are not adopted.

关键词： Guadua Bamboo Genetic diversity Amazon rainforest Anthropized and native populations Underutilization plants

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

Bone marrow-derived monocyte infusion improves hepatic fibrosis by decreasing osteopontin,TGF-β1,IL-13 and oxidative stress

引用

World Journal of Gastroenterology 2017年第28期23卷 5146-5157页

作者： Veruska Cintia Alexandrino de souza Thiago Almeida Pereira Valéria Wanderley Teixeira Helotonio Carvalho maria Carolina Accioly Brelaz de Castro Carolline Guimaraes D’assuncao Andreia Ferreira de Barros Camila Lima Carvalho Virgínia maria Barros de Lorena Vláudia maria assis Costa Alvaro Aguiar Coelho Teixeira Regina Celia Bressan Queiroz Figueiredo Sheilla Andrade de Oliveira Centro de Pesquisas Aggeu Magalhaes Fundacao Oswaldo Cruz Immunopathogenesis Section Laboratory of Parasitic DiseasesNational Institute of Allergy and Infectious DiseaseNational Institutes of HealthBethesdaMDUSA and Laboratório de Doencas Parasitárias e infecciosasFaculdade de MedicinaUniversidade Federal de Minas Gerais Departamento de Morfologia e Fisiologia Animal Universidade Federal Rural de Pernambuco Departamento de Biofísica e Radiobiologia Universidade Federal de Pernambuco Centro Acadêmico de Vitória Universidade Federal de Pernambuco Departamento de Medicina Tropical Universidade Federal de Pernambuco

AIM To evaluate the therapeutic effects of bone marrowderived CD11b+CD14+ monocytes in a murine model of chronic liver damage. METHODS Chronic liver damage was induced in C57BL/6 mice by administration of carbon tetrachloride and ethanol for 6 mo. Bone marrow-derived monocytes isolated by immunomagnetic separation were used for therapy. The cell transplantation effects were evaluated by morphometry,biochemical assessment,immunohistochemistry and enzyme-linked immunosorbent assay. RESULTS CD11b+CD14+ monocyte therapy significantly reduced liver fibrosis and increased hepatic glutathione levels. Levels of pro-inflammatory cytokines,including tumor necrosis factor-α,interleukin(IL)-6 and IL-1β,in addition to pro-fibrotic factors,such as IL-13,transforming growth factor-β1 and tissue inhibitor of metalloproteinase-1 also decreased,while IL-10 and matrix metalloproteinase-9 increased in the monocytetreated group. CD11b+CD14+ monocyte transplantation caused significant changes in the hepatic expression of α-smooth muscle actin and osteopontin. CONCLUSION Monocyte therapy is capable of bringing about improvement of liver fibrosis by reducing oxidative stress and inflammation,as well as increasing antifibrogenic factors.

关键词：单核白血球骨头髓 mononuclear 房间房间治疗巨噬细胞谷胱甘肽肝纤维变性

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

Essential Oils from <i>Lippia origanoides</i>Kunth. and <i>Mentha spicata</i>L.: Chemical Composition, Insecticidal and Antioxidant Activities

引用

American Journal of Plant Sciences 2014年第9期5卷 1181-1190页

作者： maria Luisa Teixeira maria das G. Cardoso Ana Cristina S. Figueiredo Jair C. Moraes Franscinely A. assis Juliana de Andrade David L. Nelson Marcos de souza Gomes Josefina Aparecida de souza Luiz Roberto Marques de Albuquerque Department of Chemistry Federal University of Lavras Lavras Brazil Department of Entomology Federal University of Lavras Lavras Brazil Federal University of Vales de Jequitinhonha e Mucuri Diamantina Brazil Universidade de Lisboa Faculdade de Ciências de Lisboa Centro de Biotecnologia Vegetal Lisboa Portugal

This work describes the chemical composition of the essential oils extracted from fresh leaves of Lippia origanoides Kunth. and Mentha spicata L. and their antioxidant and insecticidal activities. The essential oils were extracted by steam distillation using a modified Clevenger apparatus and subsequently analyzed by gas chromatography-flame ionization detector and gas chromatography-mass spectrometry. The antioxidant activities were determined by the β-carotene-linoleic acid method and by sequestration of the 2,2-diphenyl-1-picryl-hidrazila radical. The concentrations of the essential oils and the synthetic standard, butylated hydroxyltoluene, were 25, 50, 100, 150, 200, 250, 300 and 500 μg mL-1. Insecticidal activity was analyzed by non-preference with choice and no choice against the aphid Myzus persicae Sulzer. Gas chromatography analysis of the essential oil from Lippia origanoides Kunth. revealed carvacrol (41.51%), p-cymene (18.36%), γ-terpinene (17.03%) and thymol (4.86%) as major constituents, and the essential oil from Mentha spicata L. contained piperitona (81.18%), piperitenone (14.57%) and limonene (1.47%) as the principal components. The essential oils and the standard exhibited dose-dependent antioxidant activities at the concentrations tested. The essential oils were shown to be potential agents in the integrated management of the aphid Myzus persicae Sulzer.

关键词： Antioxidant Activity Insecticidal Activity Lamiaceae Natural Products Verbenaceae

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

Development and Characterization of Nanovesicles Containing Phenolic Compounds of Microalgae Spirulina Strain LEB-18 and Chlorella pyrenoidosa

引用

Advances in Materials Physics and Chemistry 2014年第1期4卷 6-12页

作者： Leticia Marques de assis Adriana Rodrigues Machado Amanda de souza da Motta Jorge Alberto Vieira Costa Leonor Almeida de souza-Soares School of Chemistry and Food Federal University of Rio GrandeRio GrandeBrazil Federal Institute Sul-Rio-Grandense Campus PelotasVisconde da GracaPelotasBrazil Institute of Basic Health Sciences Federal University of Rio Grande do SulPorto AlegreBrazil

The objective of this study was to elaborate liposomes, through the lipid film hydration methodology, to nanoencapsulate phenolic compounds of Spirulina LEB-18 and Chlorella pyrenoidosa microalgae, and evaluate their physicochemical characteristics and storage stability for 21 days. The total phenolic compounds were evaluated using a calibration curve of gallic acid using methanol and ethanol as extraction solvents. The size and polydispersity index of nanovesicles were determined by light scattering and the percentage encapsulation efficiency was determined by a centrifugation process. The stability of the liposomes at storage time was measured by zeta potential for 21 days. The methanol extracts from Spirulina had a higher content of phenolic compounds (2.62 mg gallic acid·g-1 of microalgae) compared to the extracts of Chlorella. However, liposomes with ethanolic extracts of the two algae showed higher encapsulation efficiency. The value was higher (96.40%) for Chlorella. All samples obtained nanometric size, with the highest value obtained for the liposome containing ethanol extract of Chlorella (239 nm) differing significantly (p ≤ 0.05) from the others. The liposomes containing extracts of Spirulina were more stable during the 21 days of storage, whereas, those consisting of ethanol extract showed no significant difference (p ≤ 0.05) throughout this period.

关键词： Microalgae Phenols Encapsulation Liposome

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：