检索结果-南通市图书馆

The impact of heterogeneity and pore network characteristics on single and multi-phase fluid propagation in complex porous media:An X-ray computed tomography study

引用

Petroleum Science 2024年第3期21卷 1719-1738页

作者： Shohreh Iraji tales rodrigues de almeida Eddy Ruidiaz Munoz Mateus Basso Alexandre Campane Vidal department of Mechanical Engineering(FEM) State University of Campinas(UNICAMP)CampinasSP13083-860Brazil department of Geology and Natural Resources Geosciences Institute(IG)State University of Campinas(UNICAMP)CampinasSP.13083-855.Brazil LRAP/COPPE/COPPETEC/UFRJ Rua Moniz Aragao 360Bloco 4 Cidade UniversitariaRio de Janeiro21941-594Brazil Center of Energy and Petroleum Studies(CEPETRO) State University of Campinas(UNICAMP)CampinasSP13083-896Brazil

This study investigates the impact of pore network characteristics on fluid flow through complex and heterogeneous porous media,providing insights into the factors affecting fluid propagation in such ***,high-resolution or micro X-ray computed tomography(CT)imaging techniques were utilized to examine outcrop stromatolite samples of the Lagoa Salgada,considered flow analogous to the Brazilian Pre-salt carbonate *** petrophysical results comprised two distinct stromatolite depositional facies,the columnar and the fine-grained *** generating pore network model(PNM),the study quantified the relationship between key features of the porous system,including pore and throat radius,throat length,coordination number,shape factor,and pore *** study found that the less dense pore network of the columnar sample is typically characterized by larger pores and wider and longer throats but with a weaker connection of throats to *** facies exhibited less variability in the radius of the pores and throats in comparison to throat ***,a series of core flooding experiments coupled with medical CT scanning was designed and conducted in the plug samples to assess flow propagation and saturation *** study revealed that the heterogeneity and presence of disconnected or dead-end pores significantly impacted the flow patterns and ***-phase flow patterns and oil saturation distribution reveal a preferential and heterogeneous displacement that mainly swept displaced fluid in some regions of plugs and bypassed it in *** relation between saturation profiles,porosity profiles,and the number of fluid flow patterns for the samples was *** for the columnar plug sample was the enhancement in recovery factor after shifting to lower salinity water injection(SB)observed.

关键词： Pore network model Heterogeneous porous media Flow patterns dead-end pores

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

Investigation of pore geometry influence on fluid flow in heterogeneous porous media:A pore-scale study

引用

Energy Geoscience 2024年第1期5卷 72-88页

作者： Ramin Soltanmohammadi Shohreh Iraji tales rodrigues de almeida Mateus Basso Eddy Ruidiaz Munoz Alexandre Campane Vidal Ingram School of Engineering Texas State UniversitySan MarcosTX78666USA department of Mechanical Engineering(FEM) State University of Campinas(UNICAMP)CampinasSP13083-855Brazil department of Geology and Natural Resources Geosciences Institute(IG)State University of Campinas(UNICAMP)CampinasSP13083-855Brazil Center of Energy and Petroleum Study(CEPETRO) State University of Campinas(UNICAMP)CampinasSP13083-855Brazil

Brazilian pre-salt reservoirs are renowned for their intricate pore networks and vuggy nature,posing significant challenges in modeling and simulating fluid flow within these carbonate *** possessing excellent petrophysical properties,such as high porosity and permeability,these reservoirs typically exhibit a notably low recovery factor,sometimes falling below 10%.Previous research has indicated that various enhanced oil recovery(EOR)methods,such as water alternating gas(WAG),can substantially augment the recovery factor in pre-salt reservoirs,resulting in improvements of up to 20%.Nevertheless,the fluid flow mechanism within Brazilian carbonate reservoirs,characterized by complex pore geometry,remains *** study examines the behavior of fluid flow in a similar heterogeneous porous material,utilizing a plug sample obtained from a vugular segment of a Brazilian stromatolite outcrop,known to share analogies with certain pre-salt *** conducted single-phase and multi-phase core flooding experiments,complemented by medical-CT scanning,to generate flow streamlines and evaluate the efficiency of water ***,micro-CT scanning of the core sample was performed,and two cross-sections from horizontal and vertical plates were *** cross-sections were then employed as geometries in a numerical simulator,enabling us to investigate the impact of pore geometry on fluid *** of the pore-scale modeling and experimental data unveiled that the presence of dead-end pores and vugs results in a significant portion of the fluid remaining stagnant within these ***,the injected fluid exhibits channeling-like behavior,leading to rapid breakthrough and low areal swept ***,the numerical simulation results demonstrated that,irrespective of the size of the dead-end regions,the pressure variation within the dead-end vugs and pores is *** the stromatolite's favorable petrophysica

关键词： Pore-scale modeling Pore geometry Flow streamlines Computational modeling Digital rock analysis

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

Small holes,big impact:Stomata in plant–pathogen–climate epic trifecta

引用

Molecular Plant 2024年第1期17卷 26-49页

作者： Shuguo Hou Olivier rodrigues Zunyong Liu Libo Shan Ping He Peking University Institute of Advanced Agricultural Sciences Shandong Laboratory of Advanced Agriculture Sciences in WeifangWeifangShandong 261325China School of Municipal&Environmental Engineering Shandong Jianzhu UniversityJinanShandong 250101China Unitéde Recherche Physiologie Pathologie et Génétique VégétalesUniversitéde Toulouse Midi-PyrénéesINP-PURPAN31076 ToulouseFrance department of Molecular Cellularand Developmental BiologyUniversity of MichiganAnn ArborMI 48109USA

The regulation of stomatal aperture opening and closure represents an evolutionary battle between plants and pathogens,characterized by adaptive strategies that influence both plant resistance and pathogen *** ongoing climate change introduces further complexity,affecting pathogen invasion and host *** review delves into recent advances on our understanding of the mechanisms governing immunity-related stomatal movement and patterning with an emphasis on the regulation of stomatal opening and closure dynamics by pathogen patterns and host *** addition,the review explores how climate changes impact plant–pathogen interactions by modulating stomatal *** light of the pressing challenges associated with food security and the unpredictable nature of climate changes,future research in this field,which includes the investigation of spatiotemporal regulation and engineering of stomatal immunity,emerges as a promising avenue for enhancing crop resilience and contributing to climate control strategies.

关键词： stomatal movement stomatal patterning plant resistance pathogen virulence apoplastic immunity and climate change

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

Soil texture prediction through stratification of a regional soil spectral library

引用

Pedosphere 2022年第2期32卷 294-306页

作者： José Janderson Ferreira COSTA élvio GIASSON Elisangela Benedet DA SILVA tales TIECHER Antonny Francisco Sampaio de SENA Ryshardson Geovane Pereira de Oliveira E SILVA department of Soil Science Faculty of AgronomyUniversity of Rio Grande do SulBento Gonçalves Avenue 7712Porto Alegre 91540-000Brazil Agricultural Research and Rural Extension Corporation of Santa Catarina Rodovia Admar Gonzaga 1347FlorianópolisSanta Catarina 88034-901Brazil

Knowing the spatial distribution of soil texture,which is a physical property,is essential to support agricultural and environmental decision *** texture can be estimated using visible,near infrared,and shortwave infrared(Vis-NIR-SWIR)***,the performance of spectroscopic models is variable because of soil ***,few studies address the effects of soil sample variability on the performance of the models,especially for larger spectral libraries that include soils that are more ***,the objectives of this study were to:i)apply Vis-based color parameters on the stratification of a regional soil spectral library;ii)evaluate the performance of the predictive models generated from the spectral library stratification;iii)compare the performance of stratified models(SMs)and the model without stratification(WSM),and iv)explain possible changes in prediction accuracy based on the ***,a regional soil spectral library with 1535 samples from the State of Santa Catarina,Brazil was *** reflectance data were obtained by Vis-NIR-SWIR spectroscopy in the laboratory using a spectroradiometer covering the 350–2500 nm spectral ***,silt,and clay fractions were determined using the pipette ***-two components of color parameters were derived from the Vis spectrum using the colorimetric models.A cubist regression algorithm was used to assess the accuracy of the applicability of the initial models(SMs and WSM)and of the validation between the *** order derivatives(FODs)at 0.5,1.5,and 2 intervals were used to explain possible changes in the performance of the *** SMs with higher contents of clay and iron oxides obtained the highest accuracy,and the most important spectral bands were identified,mainly in the 480–550 and 850–900 nm ranges and the 1400,1900,and 2200 nm ***,stratification of soil spectral libraries is a good strategy to improve regional assessments of soil resou

关键词： color parameters cubist regression fractional order derivatives soil spectroscopy spectroscopic model stratified model Vis-NIR-SWIR

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

Albumin administration in patients with cirrhosis: Current role and novel perspectives

引用

World Journal of Gastroenterology 2022年第33期28卷 4773-4786页

作者： Angelo Zambam de Mattos Douglas Alano Simonetto Carlos Terra Alberto Queiroz Farias Paulo Lisboa Bittencourt tales Henrique Soares Pase Marlon Rubini Toazza Angelo Alves de Mattos Alliance of Brazilian Centers for Cirrhosis Care-the ABC Group Graduate Program in Medicine:Hepatology Federal University of Health Sciences of Porto AlegrePorto Alegre 90050-170Brazil Division of Gastroenterology and Hepatology Mayo ClinicRochesterMN 55902United States department of Gastroenterology State University of Rio de JaneiroRio de Janeiro 20550-170Brazil department of Gastroenterology University of São PauloSão Paulo 01246-903Brazil Gastroenterology and Hepatology Unit Hospital PortuguêsSalvador 40130-030Brazil Internal Medicine Unit Irmandade Santa Casa de Misericórdia de Porto AlegrePorto Alegre 90020-090Brazil Gastroenterology and Hepatology Unit Irmandade Santa Casa de Misericórdia de Porto AlegrePorto Alegre 90020-090Brazil 不详

Mortality in cirrhosis is mostly associated with the development of clinical decompensation,characterized by ascites,hepatic encephalopathy,variceal bleeding,or ***,it is important to prevent and manage such ***,the pathophysiology of decompensated cirrhosis was explained by the peripheral arterial vasodilation hypothesis,but it is currently understood that decompensation might also be driven by a systemic inflammatory state(the systemic inflammation hypothesis).Considering its oncotic and nononcotic properties,albumin has been thoroughly evaluated in the prevention and management of several of these decompensating *** are formal evidence-based recommendations from international medical societies proposing that albumin be administered in individuals with cirrhosis undergoing large-volume paracentesis,patients with spontaneous bacterial peritonitis,those with acute kidney injury(even before the etiological diagnosis),and those with hepatorenal ***,there are a few randomized controlled trials and meta-analyses suggesting a possible role for albumin infusion in patients with cirrhosis and ascites(long-term albumin administration),individuals with hepatic encephalopathy,and those with acute-on-chronic liver failure undergoing modest-volume *** studies are necessary to elucidate whether albumin administration also benefits patients with cirrhosis and other complications,such as individuals with extraperitoneal infections,those hospitalized with decompensated cirrhosis and hypoalbuminemia,and patients with hyponatremia.

关键词： Cirrhosis Albumin Paracentesis Spontaneous bacterial peritonitis Acute kidney injury Hepatorenal syndrome

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

史實與傳説之間:關于《蘭亭序》的永恒之謎

引用

书法研究 2024年第4期 138-161,198页

作者： [意]畢羅廣州美術學院

世界上很少有專門以“真僞”爲題名的探討單一藝術品的論文集。可是在東亞,從唐代以來一直被當作是最高級的一幅藝術品——王羲之《蘭亭序》,其真實性却屢受質疑。一方面是《世説新語》《藝文類聚》等歷史文獻對現存摹本製造過程的叙述... 详细信息

世界上很少有專門以“真僞”爲題名的探討單一藝術品的論文集。可是在東亞,從唐代以來一直被當作是最高級的一幅藝術品——王羲之《蘭亭序》,其真實性却屢受質疑。一方面是《世説新語》《藝文類聚》等歷史文獻對現存摹本製造過程的叙述過于含蓄,使歷代學者産生種種疑惑;另一方面初唐以後的文獻多是記述把《蘭亭序》與王羲之神化到極致的“傳奇”故事,對《蘭亭序》作爲一幅文學作品和書法作品而存在産生了多重影響。筆者通過客觀地梳理和解讀文獻并且結合相關史實情况,擬對《蘭亭序》的創作語境做出合乎邏輯的探討,并指出認爲《蘭亭序》墨迹及文本爲贋品的“否定派”忽略了古代文獻的傳寫及藝術品的複製的具體問題。

关键词：《蘭亭序》《蘭亭詩》王羲之書法複製

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

Non-alcoholic fatty liver disease-related hepatocellular carcinoma:Is there a role for immunotherapy?

引用

World Journal of Gastroenterology 2022年第28期28卷 3595-3607页

作者： Ângelo Z Mattos Jose D debes Arndt Vogel Marco Arrese Xavier Revelo tales Henrique S Pase Muriel Manica Angelo A Mattos Graduate Program in Medicine:Hepatology Federal University of Health Sciences of Porto AlegrePorto Alegre 90050-170Brazil Gastroenterology and Hepatology Unit Irmandade Santa Casa de Misericórdia de Porto AlegrePorto Alegre 90050-170Brazil department of Medicine University of MinnesotaMinneapolisMN 55455United States department of Gastroenterology and Hepatology Erasmus Medical CenterRotterdam 999025Netherlands department of Gastroenterology Hepatology and EndocrinologyHannover Medical SchoolHannover 30625Germany department of Gastroenterology School of Medicine and Center for Aging and RegenerationFaculty of Biological SciencesPontificia Universidad Católica de ChileSantiago 3580000Chile department of Integrative Biology and Physiology University of MinnesotaMinneapolisMN 55455United States Internal Medicine Unit Irmandade Santa Casa de Misericórdia de Porto AlegrePorto Alegre 90020-090Brazil

Hepatocellular carcinoma(HCC)is among the most common cancers and it is a major cause of cancer-related ***-alcoholic fatty liver disease(NAFLD)affects approximately one fourth of individuals worldwide and it is becoming one of the most important causes of *** pathogenic mechanisms leading to NAFLD-related HCC are complex and not completely ***,metabolic,fibrogenic,oncogenic,inflammatory and immunological pathways seem to be ***-line therapy of advanced HCC has recently undergone major changes,since the combination of atezolizumab and bevacizumab was proven to increase survival when compared to *** immune-oncology drugs are also demonstrating promising results in patients with advanced HCC when compared to traditional systemic ***,initial studies raised concerns that the advantages of immunotherapy might depend on the underlying liver disease,which seems to be particularly important in NAFLD-related HCC,as these tumors might not benefit from *** article will review the mechanisms of NAFLD-related hepatocarcinogenesis,with an emphasis on its immune aspects,the efficacy of traditional systemic therapy for advanced NAFLD-related HCC,and the most recent data on the role of immunotherapy for this specific group of patients,showing that the management of this condition should be individualized and that a general recommendation cannot be made at this time.

关键词： Non-alcoholic fatty liver disease Hepatocellular carcinoma Hepatocarcinogenesis Immunology Immunotherapy Tyrosine kinase inhibitors

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

Pedestrians Mobility on Public Sidewalks Evaluated by the IAAPE Method

引用

Journal of Civil Engineering and Architecture 2017年第8期11卷 789-799页

作者： Karla Conceicao Pereira Alcindo Neckel Henrique Aniceto Kujawa Mauricio Kunz Grace Cardoso Lauro André Ribeiro Caliane Christie Oliveira de almeida Silva Pamela Gnoatto Paola Pol Saraiva Juliana Frighetto tales Goncalves Visentin School of Architecture and Urbanism of Faculdade Meridional (IMED) Group of Studies and Research on Urban Mobility (NEPMOUR) Passo Fundo/RS. CEP: 99070-220 Brazil School of Psychologyof Faculdade Meridional (IMED) Group of Studies and Research on Urban Mobility (NEPMOUR) Passo Fundo/RS. CEP: 99070-220 Brazil

This research aims to evaluate walkability as a strategy of urban mobility in relation to physical characteristics of accessibility and attractiveness from public sidewalks characteristics in the city of Passo Fundo/RS-Brazil using the IAAPE （indicators of attraction and pedestrian accessibility） method. The concept of walkability corresponds to the simple act of walking in a pleasant way along the footpaths. Therefore, the IAAPE method was used, which considers aspects of connectivity, comfort, conviviality, coexistence, convenience, clarity and commitment in relation to the space evaluated. In this study, 40 adults, elderly, pregnant and wheelchair subjects were interviewed for evaluating the importance criteria on public sidewalks for a given type of user. In general, reduced sidewalk dimensions and obstacle presence are the main displacement hurdles in most of the cases analyzed. Thus, improvements are needed to avoid stress situations that arise from daily routine, to encourage physical activities, accessibility, and the emergence of meeting and leisure points.

关键词： Walkability mobility public sidewalks IAAPE life quality.

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

Is There a Literature From the State of Amazon？

引用

Sino-US English Teaching 2017年第5期14卷 333-343页

作者： Francisca de Lourdes Souza Louro Jamescley almeida de Souza University of the State of Amazon Manaus Brazil Federal University of Amazon Manaus Brazil

I have chosen this title because it represents a question which floats over the existence of literariness in authors from State of Amazon. Literariness, from Jakobson＇s viewpoint, is the number of proprieties which characterizes the literary language. In this regard, the literary text distinguishes itself for the fact of transforming realities and for use it as model to create ＂fantastic＂ worlds, which exist only in the texts, once they set up themselves through metaphors, caricature, allegory, and likelihood. Formalists declare that the object of literary science must be studied from the specific particularities that differentiate the literary objects of all other subject. There is a book, written by the poet Jorge Tufic, which raises that same question, and finally responds：＂there is a lost language which must be recovered＂ to better understand that we can be a new research and creativity field. I have chosen then, for this study, three tales oftbe writer Arthur Engr^cio to discuss this question. It is aimed at contributing, in a general way, to the knowledge of the literature produced by Engr^cio, as well as to extend it to other perspectives heretofore little studied.

关键词： literariness tale caboclo language (literature) literary science

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

Effects of phosphorus fertilizer application on phosphorus fractions in different organs of Cordia trichotoma

引用

Journal of Forestry Research 2021年第2期32卷 725-732页

作者： Matheus S.S.Kulmann Lincon O.S.Stefanello RaíA.Schwalbert Álvaro L.P.Berghetti Maristela M.Araujo Rogerio Piccin Luciano C.Gatiboni tales Tiecher Paulo A.A.Ferreira Gustavo Brunetto department of Soil Science Federal University of Santa MariaSanta MariaRio Grande do SulBrazil department of Rural Engineering Federal University of Santa MariaSanta MariaRio Grande do SulBrazil department of Forest Engineering Federal University of Santa MariaSanta MariaRio Grande do Sul 97105-900Brazil Agroveterinary Science Center State University of Santa CatarinaLagesSanta Catarina88520-000Brazil department of Soil Science Federal University of Rio Grande do SulPorto AlegreRio Grande do Sul 91540-000Brazil

The application of phosphorus(P)to soil can increase its availability to plants and alter P fractions in annual and perennial organs of Cordia *** a portion of P accumulates in perennial organs in organic fractions it can be used in the next growth season,possibly decreasing plant dependence on P derived from soil ***,if P is preferentially accumulated in inorganic fractions in annual organs,plants will be more dependent on phosphate *** study aimed to evaluate the distribution of P fractions in organs of *** grown on sandy soil treated with 120 and 360 kg P2O5 ha^(−1).The control was a zero *** 24 months following fertilization,*** seedlings were cut and separated into leaves,branches,stems and roots,dried,ground and subjected to chemical fractionation of P,which estimates fractions of total soluble P,soluble inorganic and organic P,lipid P,P associated ribonucleic acid and deoxyribonucleic acid,and residual P.P in annual organs,as leaves,accumulated preferentially in the soluble inorganic fraction in both *** perennial organs such as stems and branches,P accumulated preferentially in the soluble organic *** application of 300%of the recommended dosage(360 kg P2O5 ha^(−1))promoted the accumulation of P in soluble organic fractions which may contribute to annual growth the following season and be a strategy to reduce the dependence of 2-year-old stands on soil-derived P and on fertilizers.

关键词： Chemical fractionation Phosphorus Phosphate fertilization Plant phosphorus

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

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：