检索结果-南通市图书馆

’Emulsion locks’ for the containment of hydrocarbons during surfactant flushing

Journal of Environmental Sciences 2020年第4期32卷 98-109页

作者： Kristine Lamont alejandro GMarangoni Erica Pensini University of Guelph School of Engineering50 Stone Road EastGwelph ONNIG 2W1Canada University of Guelph Food Science Department50 Stone Road EastGuelph ONNIG 2WlCanada

Reversible double water in oil in water(W/O/W)emulsions were developed to contain subsurface hydrocarbon spills during their remediation using surfactant *** emulsions were prepared by emulsifying CaCl2 solutions in canola oil,and subsequently by emulsifying the W/O emulsions in aqueous sodium alginate *** formation of double emulsions was confirmed with confocal and optical *** double emulsions reversed and gelled when mixed with the surfactants sodium dodecyl sulfate(SDS)and cocamidopropyl betaine(CPB).Gels can act as’emulsion locks’to prevent spreading of the hydrocarbon plume from the areas treated with surfactant flushing,as shown in sand column *** rheology was used to quantify the viscoelastic moduli increase(gelation)upon mixing the double emulsion with SDS and *** was more effective than CPB in gelling the double *** and SDS could adsorb at the interface between water and model hydrocarbons(toluene and motor oil),lowering the interfacial tension and rigidifying the interface(as shown with a Langmuir trough).Bottle tests and optical microscopy showed that SDS and CPB produced W/O and O/W emulsions,with either toluene or motor oil and *** emulsification of motor oil and toluene in water with SDS and CPB facilitated their flow through sand columns and their *** recovery from sand columns was quantitated using Gas-Chromatography MassSpectroscopy(GC-MS).The data show that SDS and CPB can be used both for surfactant flushing and to trigger the gelation of’emulsion locks’.Ethanol also gelled the emulsions at100 mL/L.

关键词： Remediation Emulsion Hydrocarbons Surfactant Rheology Langmuir trough

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

Risk factors connected to gastrointestinal parasites in mantled Alouatta palliata mexicana and black howler monkeys Alouatta pigra living in continuous and in fragmented rainforests in Mexico

引用

Current Zoology 2012年第3期58卷 375-383页

作者： Genoveva TREJO-MACIAS alejandro ESTRADA Estacien de Biologfa Tropical Los Tuxtlas Instituto de BiologiaUNAMCircuito Exterior junto a Jardfn BotainicoM6xicoDEMexico

In this study we document the prevalence of gastrointestinal parasites （helminths and protozoans） found in fecal samples of populations of Alouatta palliata mexicana and ofA. pigra in Los Tuxtlas and in Palenque, southeast Mexico, and its re- lation to habitat condition, sex/age and season. Nineteen parasite morphotypes were detected in the fecal samples from populations of the two howler monkeys, of which 58% were shared by both species. When considering all parasite species, populations of the two howler species were more likely to be parasitized in fragmented habitat compared to continuous habitat. Individuals of both howler monkey species that lived in fragmented habitat had a higher prevalence of Controrchis biliophilus. A. p. mexicana individuals had a higher prevalence of Trypanoxyuris minutus than A. pigra, probably the result of the larger group sizes found in the former species, and T. minutus was more likely to be found in A. palliata individuals that lived in fragmented habitat. Adult A. p. mexicana males had a higher risk of being parasitized compared to adult females, but these differences were not detected in A. pigra, Parasite species such as Entamoeba sp., Nematoda sp. 28, Nematoda sp. B and Parabronema sp. where only found during the wet season in both howler monkey species. Populations of both howler monkey species had a higher prevalence of Nematoda sp. A in the wet season and Ascaridae eggs were only detected during the wet season in A. pigra. Other parasites detected displayed no clear seasonal pattern [Current Zoology 58 （3）： 375-383, 2012].

关键词： Gastrointestinal parasites Habitat fragmentation Seasonality Alouatta palliata mexicana Alouatta pigra Mexico

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

Polymeric nanocarriers for nose-to-brain drug delivery in neurodegenerative diseases and neurodevelopmental disorders

引用

Acta Pharmaceutica Sinica B 2023年第5期13卷 1866-1886页

作者： Rania Awad Avi Avital alejandro Sosnik Laboratory of Pharmaceutical Nanomaterials Science Department of Materials Science and EngineeringTechnion-Israel Institute of TechnologyHaifa 3200003Israel Behavioral Neurobiology Laboratory Department of Occupational TherapyFaculty of Social Welfare and Health SciencesUniversity of HaifaHaifa 3498838Israel

Neurodegenerative diseases are progressive conditions that affect the neurons of the central nervous system(CNS)and result in their damage and *** disorders include intellectual disability,autism spectrum disorder,and attention-deficit/hyperactivity disorder and stem from the disruption of essential neurodevelopmental *** treatment of neurodegenerative and neurodevelopmental conditions,together affecting~120 million people worldwide,is challenged by the blood—brain barrier(BBB)and the blood—cerebrospinal fluid barrier that prevent the crossing of drugs from the systemic circulation into the *** nose-to-brain pathway that bypasses the BBB and increases the brain bioavailability of intranasally administered drugs is promising to improve the treatment of CNS *** pathway is more efficient for nanoparticles than for solutions,hence,the research on intranasal nano-drug delivery systems has grown exponentially over the last *** nanoparticles have become key players in the field owing to the high design and synthetic *** review describes the challenges faced for the treatment of neurodegenerative and neurodevelopmental conditions,the molecular and cellular features of the nasal mucosa and the contribution of intranasal nano-drug delivery to overcome ***,a comprehensive overview of polymeric nanocarriers investigated to increase drug bioavailability in the brain is introduced.

关键词： Neurodegenerative diseases Neurodevelopmental disorders Central nervous system Blood—brain barrier Nano-drug delivery systems Nose-to-brain pathway Intranasal administration Polymeric nanoparticles Polymeric micelles Dendrimers

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

Precipitating factors leading to decompensation of chronic heart failure in the elderly patient in South-american community hospital

引用

Journal of Geriatric Cardiology 2011年第1期8卷 12-14页

作者： alejandro Diaz Cleto Ciocchini Mariano Esperatti Alberto Becerra Sabrina Mainardi alejandro Farah Department of Cardiology Hospital Privado de Comunidad Cordoba 4545 Mar del Plata 7600 Argentina Department of Internal Medicine Hospital Privado de Comunidad Cordoba 4545 Mar del Plata 7600 Argentina

Background Exacerbations of heart failure appear frequently associated with precipitating factors not directly related to the evolution of cardiac disease. There still a paucity of data on the proportional distribution of precipitating factors specifically in elderly patients. The aim of this study was to examine prospectively the precipitating factors leading to hospitalization in elderly patients with heart failure in our community hospital. Methods We evaluate elderly patients who need admissions for decompensate heart failure. All patients were reviewed daily by the study investigators at the first 24 h and closely followed-up. Decompensation was defined as the worsening in clinical NYHA class associated with the need for an increase in medical treatment （at minimum intravenously diuretics）. Results We included 102 patients （mean age 79 ± 12 years）. Precipitating factors were identified in 88.5%. The decompensation was sudden in 35% of the cases. Noncompliance with diet was identified in 52% of the patients, lack of adherence to the prescribed medications amounted to 30%. Others precipitating factors were infections （29%）, arrhythmias （25%）, acute coronary ischemia （22%）, and uncontrolled hypertension （15%）, miscellaneous causes were detected in 18% of the cases （progression of renal disease 60%, anemia 30% and iatrogenic factors 10%）. Concomitant cause was not recognizable in 11.5%. Conclusions Large proportion heart failure hospitalizations are associated with preventable precipitating factors. Knowledge of potential precipitating factors may help to optimize treatment and provide guidance for patients with heart failure. The presence of potential precipitating factors should be routinely evaluated in patients presenting chronic heart failure.

关键词： heart failure exacerbation elderly patient

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

Average Current Control with Internal Model Control and Real-time Frequency Decoupling for Hybrid Energy Storage Systems in Microgrids

引用

Journal of Modern Power Systems and Clean Energy 2023年第2期11卷 511-522页

作者： alejandro Latorre Wilmar Martinez Camilo A.Cortes EMC-UN Research Group Universidad Nacional de ColombiaBogotaColombia KU Leuven Campus DiepenbeekEnergy Ville 1-GenkBelgiumDiepenbeekBelgium

among hybrid energy storage systems(HESSs),battery-ultracapacitor systems in active topology use DC/DC power converters for their *** are part of the solutions designed to improve the operation of power systems in different *** the residential microgrid applications,a multilevel control system is required to manage the available energy and interactions among the microgrid *** this purpose,a rule-based power management system is designed,whose operation is validated in the simulation,and the performances of different controllers are compared to select the best strategy for the DC/DC *** average current control with internal model control and real-time frequency decoupling is proposed as the most suitable controller according to the contemplated performance parameters,allowing voltage regulation values close to 1%.The results are validated using real-time hardware-in-the-loop(HIL).These systems can be easily adjusted for other applications such as electric vehicles.

关键词： Internal model control energy management system(EMS) hybrid energy storage system(HESS) microgrids real-time frequency decoupling

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

Functional traits:the pathways to riverine plant resistance in times of hydropeaking

引用

Ecological Processes 2023年第1期12卷 884-915页

作者： alejandro Baladrón María Dolores Bejarano Isabel Boavida CERIS Civil Engineering Research and Innovation for SustainabilityInstituto Superior TécnicoUniversidade de LisboaAv.Rovisco Pais1049-001 LisbonPortugal Natural Resources Department Universidad Politécnica de Madrid(UPM)Calle JoséAntonio Novais1028040 MadridSpain

Hydropeaking,which refers to rising or falling discharges caused by the turning on or off of hydro-turbines to generate electricity,is a topic of growing interest due to its impact on fluvial *** date,most hydropeaking studies have focused on the impact of peak fluctuations on invertebrate and fish communities,but little attention has been paid to its impact on riverine plants and how functional traits may make them resistant to *** performed a review to assess how a set of 32 plant functional traits can be expressed in riverine plant species,and found evidence of how such expression affects their capacity to cope with common sources of hydropeaking disturbance(i.e.,inundation,fast water drawdown,and rapid water fluctuations linked to up-ramping and down-ramping hydropeaking operations).The information here presented can simplify the evaluation of impacts on riverine plant communities worldwide,as well as to detect suitable species to successfully restore rivers affected by hydropower production.

关键词： Drought Flooding Waterlogging Hydropeaking Plant trait Riverine vegetation

来源：

维普期刊数据库

同方期刊数据库

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

Multiple-population QTL mapping of maturity and fruit-quality traits reveals LG4 region as a breeding target in sweet cherry(Prunus avium L.)

引用

Horticulture Research 2020年第1期7卷 1290-1302页

作者： alejandro Calle Ana Wünsch Unidad de Hortofruticultura Centro de Investigación y Tecnología Agroalimentaria de Aragón(CITA).Avda.Montañana 93050059 ZaragozaSpain Instituto Agroalimentario de Aragón-IA2(CITA-Universidad de Zaragoza) ZaragozaSpain

Sweet cherry maturity date and fruit quality are relevant traits for its marketability,transport,and consumer *** this work,sweet cherry fruit development time,maturity date,and commercial fruit-quality traits(size,weight,firmness,soluble solid content,and titratable acidity)were investigated to improve the knowledge of their genetic control,and to identify alleles of breeding *** sweet cherry populations segregating for these traits were used for QTL *** populations descend from cross-and self-pollinations of local Spanish sweet cherries‘ambrunés’and‘Cristobalina’,and breed cultivars(‘Brooks’,‘Lambert’,or‘Vic’).The six populations(n=411),previously genotyped with RosBREED Cherry 6 K SNP array,were phenotyped for 2 *** analyses were conducted using a multifamily approach implemented by FlexQTL™.Fruit development time,soluble solid content,and titratable acidity QTLs are first reported in sweet cherry in this *** QTLs were detected for all the *** were more stable as they were detected for 2 *** these,nine are first reported in this *** major QTLs for fruit development time,maturity date,firmness,and soluble solid content were identified on the same narrow region of linkage group *** traits also showed significant positive correlation(long fruit development time associated with late maturity,high firmness,and high SSC).NAC transcription factor genes identified on this LG4 region may be candidate genes for the regulation of these traits in sweet cherry,as previously described in syntenic regions of other Rosaceae *** of breeding interest on this LG4 genomic region were identified and will be useful for sweet cherry breeding from this and related plant material.

关键词： breeding fir maturity

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

Real Renormings on Complex Banach Spaces

引用

Chinese Annals of Mathematics,Series B 2008年第3期29卷 239-246页

作者： Francisco J GARC■A-PACHECO alejandro MIRALLES Department of Mathematical Sciences Kent State University Departamento de Análisis Matemático Universidad de Valencia

The authors prove that every complex Banach space admits an equivalent real norm that is far away from being a complex norm. Furthermore, this real norm can be chosen to share many properties with complex norms, but i... 详细信息

关键词： Complex norms Real norms Hilbert space

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

Generation of natural killer cells from hematopoietic stem cells in vitro for immunotherapy

引用

Cellular & Molecular Immunology 2012年第4期9卷 310-320页

作者： Martha Luevano alejandro Madrigal Aurore Saudemont Anthony Nolan Research Institute and University College London Royal Free Campus London UK

Natural killer （NK） cells are part of the innate immune system and are an alluring option for immunotherapy due to their ability to kill infected cells or cancer cells without prior sensitization. Throughout the past 20 years, different groups have been able to reproduce NK cell development in vitro, and NK cell ontogeny studies have provided the basis for the establishment of protocols to produce NK cells in vitro for immunotherapy. Here, we briefly discuss NK cell development and NK cell immunotherapy approaches. We review the factors needed for NK cell differentiation in vitro, which stem cell sources have been used, published protocols, challenges and future directions for Good Manufacturing Practice protocols.

关键词： cord blood natural killer cells differentiation

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

Silver sulfide leaching with a copper-thiosulfate solution in the absence of ammonia

引用

Rare Metals 2011年第2期30卷 105-109页

作者： CUI Yiqi TONG Xiong alejandro Lopez-Valdivieso Faculty of land and Resource Engineering Kunming University of Science and Technology Kunming 650093 China Instituto de Metalurgia UniversidadAutonoma de San Luis Potosi San Luis Potosi C.P. 78210 Mexico

Leaching from silver *** a copper-thiosulfate solution in the absence of ammonia was investigated. It is found that silver sulfide could be effectively dissolved in the copper-thiosulfate system without ammonia. The effects of thiosulfate concentration, cop- per-to-thiosulfate ratio, agitation vigorousness, pH values, and dissolved gases on the leaching of silver sulfide with the copper-thiosulfate solution were studied. A maximum extraction of 95.1% was achieved with the 0.12 mol/L thiosulfate and the 0.048 rnol/L copper sulfate. It is shown that copper-to-thiosulfate ratio is an important factor in silver sulfide dissolution and oxygen is not needed to leach silver sulfide, which leads to the instability of the leaching system at high copper-to-thiosulfate ratio. On the other hand, the silver extraction is not affected by the pulp pH values.

关键词： extraction silver leaching copper sulfate thiosulfate

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：