检索结果-南通市图书馆

Water yield and biomass production for on a eucalypt-dominated Mediterranean catchment under different climate scenarios

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

林业研究:英文版 2023年第5期34卷 1263-1278页

作者： joao Rocha Ana Quintela Dalila Serpa Jan Jacob Keizer Sérgio Fabres RAIZ-Forest and Paper Research Institute Quinta de S.FranciscoRua JoséEstevao(EN 230-1)3800–783 EixoAveiroPortugal Department of Environment and Planning Centre of Environmental and Marine Studies(CESAM)University of AveiroCampus Universitário de Santiago3810–193 AveiroPortugal

Worldwide,forests are vital in the regulation of the water cycle regulation and in water balance *** of ecohydrological responses of production forests is essential to support management strategies,especially where water is already *** climatological patterns are expected to impact thermopluviometric regimes,water cycle components,hydrological responses,and plant physiology,evapotranspiration rates,crop productivity and land management *** work(1)assessed the impacts of different predicted climate conditions on water yield;(2)inferred the impacts of climate change on biomass production on eucalypt-to-eucalypt succes *** this end,the widely accepted Soil and Water Assessment Tool(SWAT)was run with the RCA,HIRHAM5 and RACMO climate models for two emission scenarios(RCP 4.5 and8.5).Three 12-year periods were considered to simulate tree growth under coppice *** results revealed an overall reduction in streamflow and water yield in the catchment in line with the projected reduction in total annual ***,HIRHAM5 and RACMO models forecast a slight shift in seasonal streamflow of up to 2 months(for2024-2048)in line with the projected increase in precipitation from May to *** biomass production,the extreme climate model(RCA)and severe emis sion scenario(RCP 8.5)predicted a decrease up to 46%.However,in the less extreme and more-correlated(with actual catchment climate conditions)climate models(RACMO and HIRHAM5)and in the less extreme emission scenario(RCP 4.5),biomass production increased(up to 20%),and the growth cycle was slightly *** was proven to be a valuable tool to assess climate change impacts on a eucalypt-dominated catchment and is a suitable decision-support tool for forest managers.

关键词： Climate scenarios Forested catchments Forest ecohydrological modelling Eucalypt biomass production SWAT model

Idiopathic dilated cardiomyopathy in pregnancy

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

Open Journal of Obstetrics and Gynecology 2013年第5期3卷 438-440页

作者： joao Paulo Candido Barbosa Maria Regina Melo da Justa Feijao francisco Herlanio Costa Carvalho Carlos Augusto Alencar Jr. francisco Edson de Lucena Feitosa Federal University of Ceara FortalezaBrazil Department of Obstetrics Federal University of CearaFortalezaBrazil

The aim of this study was to highlight the importance of knowledge of idiopathic dilated cardiomyopathy (IDC) in pregnancy and its complications, with the order to establish early diagnosis and treatment. We report the case of a primigravida aged 17, previously healthy, 18 weeks of gestation with dyspnea at rest, which started 2 weeks ago. During the investigation, the echocardiogram (ECO) showed left ventricle (LV) dilation with impaired systolic and diastolic function, LV ejection fraction of 20%. We did not identify a cause for the patient’s clinical condition, being diagnosed with IDC. The patient remained in obstetrics and cardiology monitoring for up to 23 weeks of gestation, when it was decided by the interruption of pregnancy by caesarean section due to hemodynamic instability. The newborn came to death four days after the procedure. The patient evolved to clinical improvement, 16 days after the resolution of gestation, was discharged for outpatient monitoring.

关键词： Cardiomyopathy Pregnancy Dyspnea at Rest Caesarean Section

Application of Extended Multiplicative Signal Correction to Short-Wavelength near Infrared Spectra of Moisture in Marzipan

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 Data Analysis and Information Processing 2013年第3期1卷 30-34页

作者： Pedro dos Santos Panero francisco dos Santos Panero joao dos Santos Panero Henrique Eduardo Bezerra da Silva Campus Novo Paraiso Instituto Federal de EducacaoCiencia e Tecnologia de RoraimaBoa VistaBrazil Instituto Federal de Educacao Ciencia e Tecnologia de RoraimaBoa VistaBrazil Departamento de Engenharia Eletrica Universidade Federal de RoraimaBoa VistaBrazil Departamento de Quimica Universidade Federal de RoraimaBoa VistaBrazil

Short-wavelength near infrared spectroscopy (SW-NIR) is a very rapid, versatile and precise technique, which can be used in many different situations and for very types of products and chemical compounds. Extended multiplicative signal correction (EMSC) is a modification of the standard MSC pre-processing method that allows the separation of physical light scattering effects from chemical (vibrational) light absorbance effects in spectra. In this paper, the EMSC is applied and compared with first derivate, second derivate, MSC and SNV in combination of PLSR to obtain robust models in terms of accuracy and predict ability with a reduced calibration data set using SW-NIR spectra of moisture in marzipan. The Extended Multiplicative Signal Correction—EMSC and combination methods provide the best results in terms of prediction ability and calibration SW-NIR spectra of moisture in marzipan. The best classification results were obtained by Extended Multiplicative Signal Correction followed by second derivates.

关键词： EMSC PLSR SW-NIR Extended Multiplicative Signal Correction Chemometrics

Nest site selection and reproductive parameters of the threatened Atlantic Royal Flycatcher(Onychorhynchus swainsoni)and their significance for conservation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Avian Research 2021年第1期12卷 63-75页

作者： Daniel F.Perrella Paulo V.Q.Zima Mercival R.francisco Programa de Pós-Graduacao em Ecologia e Recursos Naturais Universidade Federal de SaCarlosWashington Luiz km 235SaCarlos 13565-905Brazil Departamento de Ciências Ambientais Universidade Federal de SaCarlosRod.Joao Leme dos Santos km 110Sorocaba 18052-780Brazil

Background:Patterns of rarity can be explained by reproductive rates,levels of endemism,and habitat specificity,and knowledge on these parameters is important to understand the levels of vulnerability of each species and to formulate conservation ***,we studied nest-site selection and breeding biology of the Atlantic Royal Flycatcher(Onychorhynchus swainsoni),a poorly known vulnerable bird endemic to the Brazilian Atlantic ***:We addressed nest site selection in three different levels:first,we searched for nests near and far from water to investigate whether birds could select water proximities to construct nests;second,we examined if they could select certain streams in detriment of others,and we analyzed the characteristics of used and non-used streams,and third,in streams in which nests were found,we addressed nest site selectivity by comparing a number of parameters between nest sites and random ***,we provide information on breeding biology parameters related to annual ***:During five breeding seasons,we found 23 nests in a well-preserved forest *** of the nests were constructed above water,and they were found in streams that were about 4 m in width,instead of smaller streams with about 1.5 m in *** analyses revealed that within the used streams,nests were constructed in sites with lower vegetation density in relation to random points,while stream width,water speed,and canopy cover presented no significant *** Royal Flycatchers in our study had a 22-day incubation period and 24 to 27-day nestling *** nest survival was comparatively high(62%),but clutch size was small(N=2 eggs)and Along the nesting streams,we found an average of 1.62±0.07 breeding pairs/***:These data suggest that nesting habitat specificity and low annual fecundity are among the factors contributing to the rarity of the Atlantic Royal Flycatcher in large forest continuums and to its absenc

关键词： Atlantic Forest Birds Breeding biology Daily survival rate Endangered species Specialized bird species

On the Study of Autonomous Underwater Vehicles by Computational Fluid-Dynamics

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

Open Journal of Fluid Dynamics 2020年第1期10卷 63-81页

作者： joao Victor Nunes de Sousa Antonio Gilson Barbosa de Lima francisco Alves Batista Edna Cordeiro de Souza Daniel Cesar de Macedo Cavalcante Paulo de Morais Pessoa joao Evangelista Franco do Carmo Department of Mechanical Engineering Federal University of Campina GrandeCampina GrandeBrazil Department of Physics State University of ParaibaCampina GrandeBrazil Department of Physics and Mathematical Federal University of Campina GrandeCampina GrandeBrazil Federal Institute of Education Science and Technology of the Sertao PernambucanoSerra TalhadaBrazil

Autonomous Underwater Vehicles (AUV’s) are considered as advanced classes of vehicles, capable of performing pre-established missions without physical communication with the ground or human assistance. The research and development of this type of vehicles have been motivated, due to its excellent characteristics, ideal to the military, scientific and industrial sectors. Thus, the objective of this paper is to study fluid flow behavior past over AUV’s, without and with control surfaces (rudders), by Computational Fluid-Dynamics (CFD), aiming to obtain information about the impact of the operating depth and control surfaces on the vehicle's hydrodynamics, in order to help researchers and designers of this class of vehicles. Results of the drag coefficient, pressure, velocity and streamlines distribution around the vehicles are presented and analyzed.

关键词： Autonomous Underwater Vehicle Fluid Flow Computational Fluid-Dynamics Drag Coefficient

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

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

作者： joao Henrique Scotti Alerico Neuza Maria Souza Picorelli 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

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

未摧毁关于衰落之地的重新思考

城市环境设计 2013年第12期 134-135页

作者： francisco joao Sousa Gabrlel Ferrelra da Silva,Ana Rlta Gomes 波尔图大学建筑学院

位于葡萄牙波尔图的Bonjardim大街长1.5km,始建于13世纪,在历史上扮演过重要角色,曾是城市都市化发展的主动脉之一,用于连接波尔图和葡萄牙北部地区。作为城市扩张路线之一,住房和小型集市是活动比较频繁的源头。作为中世纪体系下的道路... 详细信息

位于葡萄牙波尔图的Bonjardim大街长1.5km,始建于13世纪,在历史上扮演过重要角色,曾是城市都市化发展的主动脉之一,用于连接波尔图和葡萄牙北部地区。作为城市扩张路线之一,住房和小型集市是活动比较频繁的源头。作为中世纪体系下的道路,小规模住宅迅速填满了Bonjardim大街,将马路宽度压缩到了5.5m。如今,尽管仍然位于老城中心,作为连接重要地区的火车及地铁中转站,但是由于受地区规模限制和快速的城镇降级,Bonjardim大街正在衰退。人口逐渐向城市周边转移的趋势,使得

关键词：波尔图住宅主动脉大动脉

Green Fertilization Enhances the Photosynthetic Performance and the Growth of Leguminous Trees for Restoration Plantation in Central Amazon

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

American Journal of Plant Sciences 2014年第16期5卷 2497-2508页

作者： Roberto Kirmayr Jaquetti Jose francisco de Carvalho Goncalves joao Baptista Silva Ferraz Marciel J.Ferreira Ulysses Moreira dos Santos Junior Claudivan Feitosa de Lacerda Laboratory of Plant Physiology and Biochemistry National Institute of Amazonian ResearchManausBrazil National Institute of Amazonian Research ManausBrazil Forest Science Department Federal University of AmazonManausBrazil

The leguminous tree species Dipteryx odorata (Aubl.) Willd. and Inga edulis Mart. were grown in the field to reforest a degraded area. To investigate the photosynthetic responses and the initial growth of Amazonian forest species under fertilization, the study species were subjected to different treatments: T1 = unfertilized-control, T2 = chemical fertilization, T3 = green fertilization and T4 = green and chemical fertilization. D. odorata showed the highest absolute growth rates in height under treatments T4 (10.2 cm·month-1) and T2 (12.2 cm·month-1). I. edulis exhibited the best performance for this same parameter in T4 (23.0 cm·month-1). The highest photosynthesis values (Pn) for both D. odorata (13.1 μmol·m-2·s-1) and I. edulis (20.6 μmol·m-2·s-1) were found in T4. The two species also showed the highest performance index values (PIABS) under T4 (D. odorata = 2.9 and I. edulis = 5.2). Our results suggest that the combination of green and chemical fertilization was the most effective of the four treatments evaluated for improving the photosynthetic performance and the growth of both species during the initial establishment of the species in a degraded area.

关键词： Photosynthesis Chlorophyll a Fluorescence Chloroplastid Pigment Contents Dipteryx odorata Inga edulis

Adenoma incidence decreases u nder the efect of polypectomy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2012年第11期18卷 1243-1248页

作者： Isadora Rosa Paulo Fidalgo Jose Soares Susana Vinga Carla Oliveira joao P Silva Susana M Ferro Paula Chaves Antonio G Oliveira Carlos N Leitao Gastroenterology Department Instituto Portu-gues de Oncologia de Lisboa Francisco Gentil EPE 1099-023Lisboa Portugal Faculdade de Ciencias da Safldeda Universidade da Beira Interior 6200-506 Covilha Portugal Jose Soares Gastroenterology Department Hospital de SantoAntonio EPE 4099-001 Porto Portugal Instituto de Engenharia de Sistemas e Com-putadores: Investigacao e Desenvolvimento 1000-029 LisboaPortugal Hospital de Santo Antonio EPE 4099-001Porto Portugal Pathology Department Instituto Portugues deOncologia de Lisboa Francisco Gentil EPE 1099-023 LisboaPortugal Biostatistics Department Faculdade deCiencias M6dicas 1169-056 Lisboa Portugal

MM： To investigate whether, under the influence of pol ypectomy, the incidence of adenoma decreases with age.METHODS： Consecutive patients with colonic adenomas identified at index colonoscopy were retrospectively selected if they had undergone three or more complete colonoscopies, at least 24 mo apart. Patients who had any first-degree relative with colorectal cancer were excluded. Data regarding number of adenomas at each colonoscopy, their location, size and histological classification were recorded. The monthly incidence density of adenomas after the index examination was estimated for the study population, by using the person-years method. Baseline adenomas were excluded from incidence calculations but their characteristics were correlated with recurrence at follow-up, using the X^42 test.RESULTS： One hundred and fifty-six patients were included （109 male, mean age at index colonoscopy 56.8 ± 10.3 years）, with follow-up that ranged from 48 to 232 mo. No significant correlations were observed between the number, the presence of villous component, or the size of adenomas at index colonoscopy and the presence of adenomas at subsequent colonoscopies （P = 0.49, 0.12 and 0.78, respectively）. The incidence of colonic adenomas was observed to decay from 1.4% person-months at the beginning of the study to values close to 0%, at 12 years after index colonoscopy.CONCLUSION： Our results suggest the sporadic formation of adenomas occurs within a discrete period and that, when these adenomas are removed, all neoplasia-prone clones may be extinguished.

关键词： Colorectal cancer Colorectal adenoma In-cidence Age Polypectomy