检索结果-南通市图书馆

soil Microbial Biomass After Three-Year Consecutive Composted Tannery sludge Amendment

Pedosphere 2014年第4期24卷 469-475页

作者： M.D.M.sILVA M.BaraJAs-ACEVEs A.s.F.araújo F.F.araújo W.J.MELO soil Quality Lab. Agricultural Science CenterFederal University of PiauiTeresinaPI 64049-550(Brazil) CINVEsTAV-IPN Departamento de BiotecnologiaBioingenieriaMexico D.F.PO Box 14-740(Mexico) West sao Paulo University UNOESTEPresidente PrudenteSP 19067-175(Brazil) Department of Technology Sao Paulo State UniversityJaboticabalSP 14801-902(Brazil)

Brazilian industry produces huge amounts of tannery sludge as residues,which is often disposed by landfilling or land ***,consecutive amendment of such composted industrial wastes may cause shifts in soil microbial biomass(sMB) and enzyme *** study aimed to evaluate sMB and enzyme activity after 3-year consecutive composted tannery sludge(CTs) amendment in tropical sandy *** amounts of CTs(0.0,2.5,5.0,10.0,and 20.0 t ha^(-1)) were applied to a sandy *** C and N contents of sMB,basal and substrate-induced respiration,respiratory quotient(qCO_2),and enzyme activities were determined in the soil samples collected after CTs amendment for 60 d at the third *** 3 years,significant changes were found in soil microbial properties in response to different CTs amounts *** organic matter and Cr contents significantly increased with increasing CTs *** and soil respiration peaked following amendment with 10.0 and 20.0 t ha-1 of CTs,respectively,while qCO_2was not significantly affected by CTs ***,soil enzyme activity decreased significantly with increasing CTs *** CTs amendment for 3 years showed inconsistent and contrasting effects on sMB and enzyme *** decrease in soil enzyme activities was proportional to a substantial increase in soil Cr concentration,with the latter exceeding the permitted concentrations by more than ***,our results suggest that a maximum CTs quantity of 5.0 t ha^(-1) can be applied annually to tropical sandy soil,without causing potential risks to sMB and enzyme activity.

关键词： Cr concentration enzyme activity industrial wastes soil microbial properties tropical soil

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

Do vegetative and reproductive phenophases of deciduous tropical species respond similarly to rainfall pulses?

引用

journal of Forestry Research 2013年第4期24卷 643-651页

作者： A.P.silveira F.s.araújo F.R.Martins Itapipoca Faculty of Education Av.Monsenhor Tabosa s/ no.Ceará State University -- UECE Graduate Course of Ecology and Natural Resources Department of BiologyBuilding 906Federal University of Ceará-UFC Department of Plant Biology Institute of BiologyP.O.Box 610University of Campinas – UNICAMP

Deciduous trees with high-density wood that occur in dry seasonal tropical regions respond to rainfall seasonality with synchrony in phenophases. However, they may exhibit interannual differences in synchrony and intensity of phenophases, as strategy for large variations in duration and intensity of rainfall pulses. Nevertheless, it remains unknown how phenophases of deciduous trees of the Brazilian semi-arid region respond to rainfall variations. The phenology of Cordia oncocalyx was monitored in deciduous thorny woodland （Caatinga）, from April 2009 to March 2011, and was correlated with rainfall, soil humidity, temperature, and photoperiod. The rainy years 2009 and 2011 exhibited higher duration of rainfall pulses and lower frequency of interpulses, but in 2010 pulse duration and total rainfall were lower. Circular statistics showed leaf flush followed by flowering and fruiting in the rainy season, and leaf fall and seed dispersal in the dry season.

关键词： asynchrony circular analysis deciduous phenology riskspreading seasonality.

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

Influence of variables related to soil weathering on the geomechanical performance of tropical soils

引用

journal of Rock Mechanics and Geotechnical Engineering 2023年第9期15卷 2423-2440页

作者： Rodrigo Cesar Pierozan Gregorio Luís silva araújo Ennio Marques Palmeira Celso Romanel Department of Civil Engineering Federal Institute of EducationScienceand Technology of RondoniaPorto VelhoROBrazil Department of Civil and Environmental Engineering University of BrasiliaBrasiliaDFBrazil Department of Civil and Environmental Engineering Pontifical Catholic University of Rio de JaneiroRio de JaneiroRJBrazil

This paper presents an experimental and analytical investigation of the influence of variables related to soil weathering on the geomechanical performance of sand-silt mixtures containing lateritic soils,*** weathered tropical soils with the influence of interparticle *** sand-silt mixtures containing different relative proportions between uniform sand and lateritic soil were produced,and geomechanical soil characterization tests were *** on the results,a transition from a primarily coarse-to a fine-grained prevailing soil structure was found to cause considerable impact on the geomechanical performance of these soils,as evidenced by design variables related to soil mineralogy and size distribution ***,fines contents of both individual soil particles and soil aggregations were found to correlate with experimental results,while the relative proportion between sesquioxides(aluminum,and iron oxides),and silica,***-silica ratios(ssR^(-1)),facilitated estimates concerning changes in geomechanical ***,the application of the sandsilt mixtures containing lateritic soil on soil walls reinforced with polymeric strips was also evaluated,further emphasizing the potential advantages of adopting variables related to soil weathering on design guidelines concerning tropical soils.

关键词： sesquioxides-silica ratio Tropical soils sand-silt mixtures Lateritic soil Reinforced soil walls

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

引用

journal of Energy Chemistry 2022年第10期31卷 88-113,I0003页

作者： Magno B.Costa Moisés A.de araújo Marcos V.de Lima Tinoco Juliana F.de Brito Lucia H.Mascaro Departamento de Química Universidade Federal de São CarlosRodovia Washington Luizkm 235São CarlosSão Paulo 13565-905Brazil Instituto de Química de são Carlos Universidade de São PauloAvenida Trabalhador Sancarlense400São CarlosSão Paulo 13566-590Brazil Instituto de Química Universidade Estadual PaulistaRua Professor Francisco Degnis/nAraraquaraSão Paulo 14800-900Brazil

This review shows the importance of WO_(3)photoanode as a potentially low-cost,efficient,stable,and photoactive material for light-driven water *** such,this manuscript aims to review the most recent publications regarding the strategies to improve the phoelectroactivity of WO_(3)films for water *** addition,this review aims to graphically highlight and discuss the general trendings of the photocurrent density response and stability test of the recent outstanding studies in the literature for photoelectrochemical water splitting *** strategies covered in this review will not only concern the WO_(3)morphology and crystal plane growth,but also the many arrangements possibilities to improve the WO_(3)efficiency for water photoelectrooxidation,such as defect engineering based on oxygen vacancies,doping,decorations,and homo and *** these strategies are compared by the photocurrent density results and by the stability of these *** best results in this sense were observed in cases where the use of heterojunction was applied together with a desired morphology and crystal plane of the WO_(3)***,the modifications that caused a decrease in the photocurrent density reaching values that are even lower than the pure WO_(3)were also *** this way,this review intends to improve the knowledge about the synthesis and design of WO_(3)photoanodes to further obtain an efficient photocatalyst to minimize the recombination losses or losses across the interfaces and improve the photoelectroactivity for water splitting in the large-scale application.

关键词： solar energy H_(2)production N-type semiconductor Photoelectrode design Oxygen evolution reaction

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

Rupture of a hepatic adenoma in a young woman after an abdominal trauma: A case report

引用

World journal of Gastroenterology 2013年第27期19卷 4422-4426页

作者： Ricardo Lemos Cotta-Pereira Luana Ferreira Valente Daniela Goncalves De Paula Antnio Luís Eiras-araújo Antnio Carlos Iglesias Department of surgery Federal University of Rio De Janeiro State (UNIRIO) Department of surgery Militar Police Hospital (HPMRJ) Rio de Janeiro Department of Radiology Federal University of Rio de Janeiro (UFRJ) and Instituto D'Or

Unlike hepatic haemorrhage following blunt abdominal trauma, spontaneous abdomen bleeding is rare, even in the presence of a hepatocellular adenoma (HA) or carcinoma. However, the diagnosis of a tumour underlying a haematoma after liver trauma is unusual, especially when it occurs more after two years after the accident. Here, we report a case of a ruptured HA due to blunt abdominal trauma. A 36-year-old woman was admitted to our hospital with sudden onset of upper abdominal pain. Her medical history revealed a blunt abdominal trauma two years prior. Initial abdominal computed tomography scan revealed a large haematoma measuring more than 16 cm in diameter in the right lobe of the liver. Magnetic resonance imaging showed haemorrhagic areas and some regions with hepatocyte hyperplasia, suggesting HA. The patient underwent right hepatic lobectomy, and a histopathological examination confirmed a diagnosis of HA. In conclusion, it is important to consider that abdominal trauma may hide old, asymptomatic and not previously detected injuries, as in the case reported.

关键词： Hepatic adenoma Treatment Hemoperitoneum Trauma Computed tomography

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

Metal Oxide Heteronanostructures Prepared by Electrospinning for the Humidity Detection: Fundamentals and Perspectives

引用

journal of Materials science and Chemical Engineering 2019年第7期7卷 43-54页

作者： Victor N.s.Leao Evando s.araújo Research Group on Electrospinning and Nanotechnology Applications(GPEA-Nano) Universidade Federal do Vale do Sao FranciscoJuazeiroBrazil

Humidity is a critical environmental parameter for several production processes and its control/monitoring is of great importance in maintaining the quality of goods and products. In this context, metallic oxide ceramic nanostructures are materials of great technological interest in the fabrication of moisture sensors because they have good chemical/structural stability and high surface area/volume ratio. The electrical response of these sensors relates to the chemisorbed and physisorbed layers of water molecules on the surface of the ceramic particles and to the capillary condensation of water in the microscopic pores between the particles. Based on these aspects, this work presents the fundamentals, electrical/electronic properties, influence of dopants, novel preparation procedure by electrospinning and perspectives of application of TiO2:WO3 metal oxide heteronanostructures as humidity sensors.

关键词： Metal Oxides Heteronanostructures Electrospinning Humidity sensors

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

Immune response to inactivated bacterial vector carrying the recombinant K39 antigen of Leishmania infantum in mice

引用

Asian Pacific journal of Tropical Biomedicine 2024年第5期14卷 199-206页

作者： Lucelina s.araújo Bruno B.silva Eduarda N.F.N.santos Arnaldo s.Bezerra samuel s.Frota Assis R.Montenegro Eridan O.P.T.Florean Maurício Fvan Tilburg Maria Izabel F.Guedes Laboratory of Biotechnology and Molecular Biology Northeast Biotechnology NetworkState University of CearáFortalezaBrazil Faculty of Veterinary Medicine State University of CearáFortalezaBrazil

Objective:To evaluate the immunological response elicited by an inactivated bacterial vector carrying the K39 antigen of Leishmania infantum,and a purified ***:Mice were subjected to the following treatments:(1)Purified recombinant K39(rK39)protein at a 20μg dose with complete Freund’s adjuvant;(2)Inactivated Escherichia coli(BL21 DE3)carrying the K39 protein at an equivalent total protein content of 200μg;(3)Inactivated bacteria lacking the K39 protein;(4)Non-immunized control *** monitoring was *** groups were challenged by intraperitoneal injection of 10^(7) Leishmania infantum *** euthanasia,the liver and spleen were collected to analyze the levels of TNF,IFN-γ,IL-12,IL-4,and ***:Mice immunized with purified rK39 or the inactivated bacterial vector carrying the K39 antigen of Leishmania infantum showed a long-lasting immune response with high levels of polyclonal antibodies specifically recognizing the recombinant *** IgG1 subclass was the predominant immunoglobulin;however,the induction of IgG2a and the profile of cytokines produced were indicative of the induction of a mixed-type ***:The inactivated bacterial vector carrying the K39 antigen,as well as the purified antigen can induce a long-lasting immune response in immunized mice,predominantly favouring a Th2 profile response.

关键词： Visceral leishmaniasis K39 Inactivated bacterial vector Vaccine Immune response Th1 Th2 Leishmania infantum

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

A simple and easy method to measure ammonia volatilization:Accuracy under field conditions

引用

Pedosphere 2021年第2期31卷 255-264页

作者： Márcio R.MARTINs Leonardo F.sARKIs Roni F.GUAREsCHI Camila A.sANTOs selenobaldo A.C.sANT’ANNA Mohammad ZAMAN Claudia P.JANTALIA Bruno J.R.ALVEs Robert M.BODDEY Ednaldo s.araÚjo segundo URQUIAGA Embrapa Agrobiology Rod.BR 465km 7Seropédica RJ CEP 23891-000(Brazil) Agroscope Research Division Agroecology and EnvironmentClimate and Agriculture GroupReckenholzstrasse 191Zurich 8046(Switzerland) Federal Rural University of Rio de Janeiro(UFRRJ) Rod.BR 465km 7Seropédica RJ CEP 23891-000(Brazil) soil and Water Management&Crop Nutrition Joint FAO/IAEA Division of Nuclear Techniques in Food&AgricultureP.O.Box 100Vienna A-1400(Austria)

Field studies on soil ammonia(NH_(3))volatilization are restricted in many countries owing to the high costs commonly demanded for accurate *** assessed the accuracy of a simple,open chamber design to capture NH_(3)under field conditions,as affected by different chamber placement ***-15 N was surface applied to lysimeters installed in the spaces between maize *** chambers made from plastic bottles were installed on each lysimeter with variations in i)N rates(3,8,13,and 18 g m^(-2)),ii)the height of the chamber above the soil surface(0,5,and 10 mm),and iii)chamber relocation(static ***).Reference lysimeters without chambers were used to measure NH_(3)losses by^(15)*** of NH_(3)-N accounted for more than 50%of the applied *** of the chambers had no impact on their NH_(3)-trapping efficiencies,proving to be an unnecessary *** in the height of the chambers above the soil surface affected the capture of NH_(3),but the results still maintained high linearity with the NH_(3)losses quantified by the reference method(R^(2)>0.98).When the same placement scheme used in the introductory study describing the chamber was utilized(static and touching the soil surface),we found a trapping efficiency of 60%,which was very similar to that(57%)obtained in the previous *** results show that this simple,open chamber design can be used with satisfactory accuracy under field conditions,provided that simple,standardized procedures are warranted.

关键词： ammonia collector chamber method field sampler gas emission low-cost chamber nitrogen cycling

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

Optimizing the use of open chambers to measure ammonia volatilization in field plots amended with urea

引用

Pedosphere 2021年第2期31卷 243-254页

作者： Márcio R.MARTINs Leonardo F.sARKIs selenobaldo A.C.sANT’ANNA Camila A.sANTOs Karla E.araUjo Ricardo C.sANTOs Ednaldo s.araÚjo Bruno J.R.ALVEs Claudia P.JANTALIA Robert M.BODDEY Mohammad ZAMAN segundo URQUIAGA Embrapa Agrobiology Rod.BR 465km 7Seropédica RJ CEP 23891-000(Brazil) Federal Rural University of Rio de Janeiro(UFRRJ) Rod.BR 465km 7Seropédica RJ CEP 23891-000(Brazil) Agroscope Research Division Agroecology and EnvironmentClimate and Agriculture GroupReckenholzstrasse 191Zurich 8046(Switzerland) soil and Water Management&Crop Nutrition Joint FAO/IAEA Division of Nuclear Techniques in Food&AgricultureP.O.Box 100Vienna A-1400(Austria)

Measuring ammonia(NH_(3))volatilization from urea-fertilized soils is crucial for evaluation of practices that reduce gaseous nitrogen(N)losses in *** small area of chambers used for NH_(3)volatilization measurements compared with the size of field plots may cause significant errors if inadequate sampling strategies are *** aims were:i)to investigate the effect of using multiple open chambers on the variability in the measurement of NH_(3)volatilization in urea-amended field plots and ii)to define the critical period of NH_(3)-N losses during which the concentration of sampling effort is capable of reducing *** use of only one chamber covering 0.015%of the plot(51.84 m^(2))generates a value of NH_(3)-N loss within an expected margin of error of 30%around the true *** reduce the error margin by half(15%),3–7 chambers were required with a mean of 5 chambers per *** the sampling efforts in the first two weeks after urea application,which is usually the most critical period of N losses and associated errors,represents an efficient strategy to lessen uncertainty in the measurements of NH_(3)*** strategy enhances the power of detection of NH_(3)-N loss abatement in field experiments using chambers.

关键词： chamber method experimental error gas emission low-cost chamber nitrogen cycling nitrogen loss soil variability

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

Lectin from Crataeva tapia bark exerts antitumor,anti-inflammtory and analgesic activities

引用

Natural Products and Bioprospecting 2011年第2期1卷 97-100页

作者： Regina M.s.araÚjo Antônio F.M.VAZ Jaciana s.AGUIAR Luana C.B.B.COELHO Patrícia M.G.PAIVA Ana M.M.MELO Teresinha G.sILVA Maria T.s.CORREIA Departamento de Bioquímica Centro de Ciências BiológicasUniversidade Federal de Pernambuco(UFPE)Avenida Prof.Moraes Rego s/n50.670420RecifePEBrazil Departamento de Antibióticos Centro de Ciências BiológicasUniversidade Federal de Pernambuco(UFPE)Avenida Prof.Moraes Rego s/n50.670420RecifePEBrazil Departamento de Biofísica Centro de Ciências BiológicasUniversidade Federal de Pernambuco(UFPE)Avenida Prof.Moraes Rego s/n50.670420RecifePEBrazil

Crataeva tapia bark lectin was evaluated for its antitumor activity against sarcoma 180 in swiss albino *** anti-inflammatory and analgesic properties were investigated in models of inflammation and *** anti-inflammatory assay was induced by carrageenan induced peritonitis and the analgesic activity was induced by acetic acid-induced writhing *** lectin presents low toxicity with a LD50 of 2,500 mg/kg body weight and significant antitumor activity causing inhibition of tumor *** lectin also promoted significant reduction(35.4%)in the number of neutrophil migration induced by *** its analgesic property,the lectin inhibits abdominal contractions induced by acetic *** current results revealed a lectin with significant antitumoral,anti-inflammatory and antinociceptive *** investigations to unveil the exact mechanisms are needed.

关键词： Crataeva tapia lectin antitumoral anti-inflammatory antinociceptive

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：