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疏水化聚乙二醇/钾离子体系提高页岩稳定性机理

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石油勘探与开发 2021年第3期48卷 620-629页

作者： VILLABONA-ESTUPIÑAN Santiago de ALMEIDA RODRIGUES JUNIOR Jorge de ABREU Carolina Ferreira.nascimento regina Sandra Veiga 哥伦比亚石油研究所布卡拉曼加681011哥伦比亚里约热内卢联邦大学化学研究所里约热内卢21941-614巴西

通过室内实验研究了疏水化聚乙二醇(PEG)/K^(+)体系抑制页岩水化的作用机理。通过岩屑热滚分散实验、膨润土性能测试和接触角测量,发现抑制剂体系的抑制能力随着接触角的增加和PEG浓度的增加而增强。改进岩屑热滚分散实验表明抑制剂并... 详细信息

通过室内实验研究了疏水化聚乙二醇(PEG)/K^(+)体系抑制页岩水化的作用机理。通过岩屑热滚分散实验、膨润土性能测试和接触角测量,发现抑制剂体系的抑制能力随着接触角的增加和PEG浓度的增加而增强。改进岩屑热滚分散实验表明抑制剂并未通过热活化钻井液乳化机理(TAME)机制发生作用。通过吸附量、傅立叶变换红外光谱(FT-IR)、X射线衍射(XRD)图谱和热重分析(TGA)研究了PEG/K^(+)体系与黏土样品的相互作用,吸附等温线分析表明K^(+)的存在增加了PEG对黏土表面的亲和力。FT-IR光谱、热重和微商热重分析证明,PEG的吸附可以减少黏土的含水率,即抑制性良好;XRD图谱分析K^(+)的存在使PEG的插层仅为一层,且连接在PEG链上的疏水尾增强了抑制水化的能力。最后采用添加PEG/K^(+)的水基钻井液进行了岩屑热滚分散实验,验证了PEG/K^(+)体系的抑制性能。

关键词：页岩水化水基钻井液水化抑制剂聚乙二醇页岩稳定性

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Chemical,Sensorial and Rheological Properties of a New Organic Rice Bran Beverage

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Rice science 2009年第3期16卷 226-234页

作者： Gerson Luis FACCIN Leila do nascimento VIEIRA Letícia Adélia MIOTTo Pedro Luiz Manique BARRETO Edna regina AMANTE Department of Food Science and Technology University Federal of the Santa CatarinaRod Admar Gonzaga1346-Itacorubi FlorianópolisSCCEP 88034001Brazil

Rice bran is a solid residue from rice polishing that is used in animal nutrition and rice oil production. Cultivation conditions with agro-toxics, lipids instability, and tendency for mycotoxin contamination restrict its application in human nutrition. Therefore, organic agriculture is an alternative to use the properties of rice bran. Rice bran beverage is a new cereal product from organic rice. This work presents the preliminary results of the chemical and rheological studies of a bath pasteurized rice bran beverage. Compared with integral defatted milk, soy extracts, and brown rice low-fat milk, the rice bran beverage studied in this work presents itself as an important source of minerals and unsaturated lipids. All essential amino acids were found in this product. Glutamic and aspartic acids were predominant. Bath pasteurization at boiling water temperature for 15 and 30 min was adequate for microbiological safety. Refrigeration storage for 20 days, evaluated by pH and acidity variations, was ideal for assessment of the beverage conservation time. The beverage viscosity was of the Newtonian standard behavior, and its viscosity during storage was not a good parameter to evaluate shelf life. Sensory preference tests showed positive perspectives for this new beverage.

关键词： beverage composition residue rice bran viscosity

Postcolonialism and the Feminine in Paulina Chiziane＇s O alegre canto da perdiz

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Journal of Literature and Art Studies 2016年第7期6卷 744-750页

作者： Algemira de Macedo Mendes Aurea regina do nascimento Santos State University of Piaui Teresina Brazil Federal Institute ofPiaui Teresina Brazil

In this study we present the novel O alegre canto da perdiz （2008）, by Paulina Chiziane, focusing on the path of the characters Delfina and Maria das Dores, pointing to the construction of a female speech denouncing the state to which the Mozambican woman was subjected, especially during colonization, a trauma still present in Africa. By telling the saga of these two women （mother and daughter）, the novel also makes a reinterpretation of the origin and history of the peoples of Africa. Beyond the issues that mark the secular submission of women to the world of man in certain African societies, Paulina Chiziane also leads us to confront the issue of reductionism practiced by those who look from outside Africa and seeks to present its history and its literature as if the African continent were a single country, as reported by the Nigerian novelist Chimamanda Adichie in her speech against ＂the danger of listening and repeating a single story, the winners＇ story＂（Adichie, 2009）. We aim to identify aspects of the unique feminine of Paulina Chiziane by rescuing legends of matriarchy in the course of the characters. We will also do a reading of colonialism and post-colonialism objectifying the female of writing Paulina Chiziane. The critical placement of the text allows us to analyze it with the contribution of Spivak （2010）, Said （1978）, Bonnici （2000）, among others.

关键词： Paulina Chiziane O alegre canto da perdiz post-colonialism feminine

Leaf Anatomy of Prosthechea moojenii(Pabst)*** and *** Cath.&***(Orchidaceae)as an Approach to Taxonomy of Species Occurring in Biomes Cerrado and Atlantic Forest of the Bahia

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American Journal of Plant Sciences 2012年第12期3卷 1752-1758页

作者： Filipe de Castro Seixas Silvana Helena.nascimento Monteiro Lazaro Benedito da Silva Kelly regina Batista Leite Instituto de Biologia Departamento de BotanicaLaboratório de Anatomia Vegetal e Identificacao de MadeirasCampus Univer-sitário de OndinaUniversidade Federal da BahiaSalvadorBrasil Instituto de Pesquisa Jardim Botanico do Rio de Janeiro Uni-dade de Botanica SistemáticaRio de JaneiroBrasil

Prosthechea is a neotropical genus, belonging to the family Orchidaceae. The Brazil recorded 32 species of the genus of which nine occur in the state of Bahia, including P. silvana and P. moojenii. The first, P. silvana is epiphytic, endemic Atlantic Forest areas of South and Southeast of the Bahia and morphologically similar to P. moojenii, rupicolous species considered endemic to the Chapada Diamantina. There are doubts whether these two species are really distinct, because they differ only as to the way of life and aspects related to the size of the inflorescence and floral structure. Thus the anatomical study of these two species, emerges as a tool that aims to investigate the delimitation of these taxa. For this study, the sheet was cut freehand with a razor blade to obtain cross sections and treated by chemical means to obtain paradermic sections, all the material was stained with safranine/Astra blue (safrablau) and safranin, respectively, and the sections were then mounted between a semipermanent and cover slipped slides. The results allowed to distinguish P. silvana of the P. moojenii through the following characteristics observed in the leaf (thickening of the cell walls of epidermal cells, amount and disposition of sclerenchyma fibers and fiber arrangement of vascular and vascular bundles in the mesophyll) and root (number of arcs of xylem and phloem, thickening of cells median cortex), infers taxonomic characters for the genus. The data indicated anatomical distinction between the two species studied here of the Prosthechea, however, suggest the anatomical analysis of other organs to reproductive and vegetative.

关键词： Laeliinae Flora of Bahia Velamen Endemism

Apolipoprotein E polymorphism influences orthotopic liver transplantation outcomes in patients with hepatitis C virus-induced liver cirrhosis

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World Journal of Gastroenterology 2021年第11期27卷 1064-1075页

作者： José Carlos Rodrigues nascimento Lianna C Pereira Juliana Magalhães C Rêgo Ronaldo P Dias Paulo Goberlânio B Silva Silvio Alencar C Sobrinho Gustavo R Coelho Ivelise regina C Brasil Edmilson F Oliveira-Filho James S Owen Pierluigi Toniutto Reinaldo B Oriá Department of Anesthesia and Surgery Liver Transplantation Fortaleza General HospitalFortaleza 60150-160CEBrazil Laboratory of the Biology of Tissue Healing Ontogeny and NutritionDepartment of Morphology and Institute of BiomedicineSchool of MedicineFederal University of CearáFortaleza 60430-270CEBrazil Department of Dental Clinic Federal University of CearáFortaleza 60430-270CEBrazil Department of Surgery Liver Transplant Unit of Federal University of CearáFortaleza 60430-270CEBrazil Transplantation Division Hospital Geral de FortalezaFortaleza 60175-742CEBrazil Institute of Virology CharitéUniversitätsmedizin BerlinBerlin 10117Germany UCL Medical School Royal Free CampusLondon NW32PFUnited Kingdom Department of Specialized Medicine Hepatology Liver Transplantation UnitAzienda Sanitaria Universitaria Integrata of UdineUdine I-33100Italy

BACKGROUND Hepatitis C virus(HCV)infection is responsible for a chronic liver inflammation,which may cause end-stage liver disease and hepatocellular *** E(protein:ApoE,gene:APOE),a key player in cholesterol metabolism,is mainly synthesized in the liver and APOE polymorphisms may influence HCV-induced liver *** To determine whether APOE alleles affect outcomes in HCV-infected patients with liver cirrhosis following orthotopic liver transplantation(OLT).METHODS This was a cohort study in which 179 patients,both genders and aged 34-70 years,were included before or after(up to 10 years follow-up)*** injury severity was assessed using different criteria,including METAVIR and models for endstage liver *** polymorphisms were analyzed by quantitative real-time polymerase chain *** The APOE3 allele was the most common(67.3%).In inflammation severity of biopsies from 89 OLT explants and 2 patients in pre-transplant,the degree of severe inflammation(A3F4,0.0%)was significantly less frequent than in patients with minimal and moderate degree of inflammation(≤A2F4,16.2%)P=0.048,in patients carrying the APOE4 allele when compared to *** addition,a significant difference was also found(≤A2F4,64.4%vs A3F4,0.0%;P=0.043)and(A1F4,57.4%vs A3F4,0.0%;P=0.024)in APOE4 patients when compared to APOE3 *** fibrosis degree of the liver graft in 8 of 91 patients and the lack of the E4 allele was associated with more moderate fibrosis(F2)(P=0.006).CONCLUSION Our results suggest that the E4 allele protects against progression of liver fibrosis and degree of inflammation in HCV-infected patients.

关键词： Apolipoprotein E Polymorphism Liver cirrhosis Hepatitis C virus Hepatocellular carcinoma Liver transplantation

FeedEfficiencyService: An architecture for the comparison of data from multiple studies related to dairy cattle feed efficiency indices

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Information Processing in Agriculture 2022年第3期9卷 378-396页

作者： Heitor Magaldi Linhares regina Braga Wagner Antonio Arbex Mariana Magalhaes Campos Fernanda Campos Jose Maria N.David Victor Stroele Programa de Pos-Graduacao em Ciencia da Computacao Universidade Federal de Juiz de ForaCampus UniversitarioRua JoseLourenco Kelmers/n-Sao PedroJuiz de ForaMinas Gerais 36036-900Brasil Brazilian Agricultural Research Corporation-Embrapa Av.Eugenio do Nascimento610-AeroportoJuiz de Fora-MGMinas Gerais 36038-330Brasil

The increased demand for food worldwide,the reduced land availability for livestock pro-duction,the increasing cost of animal feed and the need for mitigating livestock-related greenhouse gas emissions have driven the search for animal feeding systems that proves more *** tackle this problem,we propose the use of computational support to help researchers compare data on feed efficiency,therefore improving economic and environ-mental *** a solution,we present an integrative architecture capable of combining heterogeneous data from multiple experiments related to dairy cattle feed efficiency *** proposed architecture,called FeedEfficiencyService,classifies animals according to feed efficiency indices and allows visualizations through ontologies and inference *** results obtained from a case study with researchers from the Brazilian Agri-cultural Research Corporation–Dairy Cattle(EMBRAPA)demonstrate that this architecture is a supporting tool in their daily work *** researchers highlighted the importance of the proposed architecture as it allows analyzing animal data,comparing experiments,having reliable data analyses,and standardizing and organizing data from *** novelty of our approach is the use of ontologies and inference engines to enable the discovery of new knowledge and new relationships between data from feed efficiency-related *** store such data,relationships,and analyses of results in an inte-grated *** solution ensures unified access to the processing history and data from diverse experiments,including those conducted at external research centers.

关键词： Dairy Cattle

Serological evidence of Toxoplasma gondii infection as potential risk for the development of lepromatous leprosy in an endemic area for both neglected tropical diseases in Brazil

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Infectious Diseases of Poverty 2020年第1期9卷 36-45页

作者： Luciana regina Pereira Oliveira Lívia Mattos Martins Rebeka da Conceição Souza Yuri Scheidegger de Castro Letícia Silva.nascimento Juliana Azevedo da Silva Edilbert Pellegrini Nahn Junior Wilmar Dias da Silva Alba Lucínia Peixoto-Rangel Laboratory of Recognition Biology Center of Biosciences and BiotechnologyState University of Northern Rio de JaneiroCampos dos GoytacazesRJBrazil Campos Medical School Campos dos GoytacazesRJBrazil Laboratory of Immunochemistry Butantan InstituteSão PauloSPBrazil

Background:Mycobacterium leprae and Toxoplasma gondii infections are both neglected tropical diseases highly prevalent in *** with certain parasite species can significantly alter susceptibility to other important pathogens,and/or influence the development of *** we investigated the possible influence of ***/*** co-parasitism on the manifestation of leprosy and its clinical ***:Participants(n=291)were recruited in Campos dos Goytacazes city,Rio de Janeiro state,southeast Brazil,from August 2015 to December 2019 and clinically diagnosed for *** were selected based on the presence(patients)or absence(healthy controls)of the leprosy *** of patients were also recruited for this *** samples from patients(n=199)with leprosy,contacts(n=40)and healthy controls(n=52)were investigated for levels of IgM and IgG anti-phenolic glycolipid-1(PGL-1)by ***,IgG antibody against soluble Toxoplasma antigen(STAg)was measured in sera samples from leprosy patients,contacts and healthy controls for Toxoplasma gondii serology by ***-PGL-1 IgG and IgM levels were compared using one-way ANOVA Kruskal-Wallis or Mann-Whitney,while Spearman test was used to correlate levels of IgG anti-STAg and IgM/IgG anti-PGL-1 from seropositive and seronegative individuals for *** *** risk of *** infection for leprosy disease was assessed using Fisher’s ***:Levels of IgM anti-PGL-1 antibodies were significantly higher in multibacillary(MB)patients compared to paucibacillary(PB)patients(P=0.0068).Higher IgM and IgG levels anti-PGL-1 were detected in patients with the lepromatous *** serologic prevalence for *** infection was 74.9%.We detected increased anti-STAg antibody levels in leprosy patients(79.4%),reaching 88.8%within those with lepromatous form of this *** leprosy risk increase in *** seropositive individuals was two-fold(odds ratio[OR]=2.055;95% c

关键词： Leprosy Toxoplasmosis Coinfection Co-immunomodulation Immunoglobulins Immune response

Renal Function after Major Uro-Oncologic Surgery and Dexmedetomidine Infusion

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Open Journal of Anesthesiology 2013年第8期3卷 356-362页

作者： Marcus Vinicius M. Novaes Paulo Sergio G. Lavinas Grace Haber D. Pires Ana Claudia G. de Carvalho Renata M. B. Lopes regina El Dib Paulo do nascimento Jr. Cancer Institute (INCA) Rio de Janeiro Brazil Department of Anesthesiology Univ Estadual Paulista (UNESP) Botucatu Brazil

Objective: Acute kidney injury in major surgery is associated with increased postoperative mortality. This study aimed to evaluate renal function after major urologic surgery and intraoperative dexmedetomidine infusion. Methods: Thirty oncologic patients with normal renal function scheduled for prostatectomy or nephrectomy, anesthetized with combined epidural and general anesthesia, were randomized to receive either intraoperative blind infusion of dexmedetomidine (Dexmedetomidine Group, n = 15, 0.5 μg/kg load dose plus 0.7 μg/kg/h) or 0.9% saline (Control Group, n = 15) until the end of surgery. Intraoperative and cumulative 24-hour diuresis, serum creatinine (SCr), calculated creatinine clearance (ClCr) and serum cystatin C (SCys) at postoperative days 1, 2 and 3 and 2 weeks after surgery were evaluated. Results: Mean ± standard deviation values for intraoperative diuresis in Dexmedetomidine and Control Groups were 566 ± 396 mL and 298 ± 153 mL, respectively (p = 0.014). Cumulative 24-hour diuresis in Dexmedetomidine and Control Groups was 1947 ± 266 mL and 1748 ± 237 mL, respectively (p = 0.91). Mean values of SCr, ClCr and SCys were not significantly different from their baseline values in both groups and no significant differences were seen between groups at any moment for two weeks (p > 0.05). Conclusion: According to the doses used in this study, despite an intraoperative increase in diuresis, intraoperative infusion of dexmedetomidine did not influence renal performance up to two weeks after major uro-oncologic surgery, as evaluated by SCr, ClCr and SCys.

关键词： Dexmedetomidine Renal Function Nephrectomy Prostatectomy Epidural General Anesthesia

Central depressant effects of Piper tuberculatum Jacq essential oil in mice

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Food Bioscience 2022年第4期48卷 620-629页

作者： Valterlúcio dos Santos Sales Francisco Romero Cabral Emmily Petícia do nascimento Sales Tatyelle Bezerra Carvalho Maria Haiele Nogueira Costa Victor Afonso Pereira de Oliveira Cristina Kelly de Souza Rodrigues Francisco Rodolpho Sobreira Dantas Nobrega de Figueiredo Daniel Souza Bezerra Gyllyandeson de Araújo Delmondes Henrique Douglas Melo Coutinho Jose Galberto Martins da Costa Irwin Rose Alencar de Menezes Cícero Francisco Bezerra Felipe Marta regina Kerntopf Universidade Regional do Cariri Departamento de Química Biol´ogicaCratoCear´aBrazil Universidade Federal de S˜ao Paulo-Departamento de Fisiologia S˜ao PauloSPBrazil Faculdade de Ciˆencias M´edicas da Santa Casa de S˜ao Paulo S˜ao PauloSPBrazil Universidade Federal da Paraíba Departamento de Biologia MolecularJo˜ao PessoaParaíbaBrazil

This study aims to investigate the toxicity and possible effects and mechanism of action of the essential oil obtained from the Piper tuberculatum Jacq.‘s fruit(EOPT)on the central nervous system(CNS)of *** the Hippocratic test,it was observed ambulation reduction,sedation,piloerection and mortality of 25%at the dose of 1000 mg/kg and 50%at the dose of 5000 mg/*** results found demonstrate that the EOPT is endowed with a possible depressant effect,and is characterized by a likely sedative(open field test),anxiolytic-like(elevated plus maze test),anticonvulsant(pentylenetetrazole-induced seizure test)and hypnotic action(pentobarbital-induced sleeping time).These effects may possibly occur due to the interaction between the monoterpenes,present in its essential oil,and the GABAergic pathway confirmed by reversion of the effects by ***,these results demonstrate the therapeutic potential and the validation of the ethnopharmacological use of this species in the treatment of disorders affecting the central nervous system.

关键词： Piper tuberculatum Jacq. Essential oil Sedative Anxiolytic Hypnotic