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Advances in Pure Mathematics 2022年第9期12卷 505-518页

作者： Vânia Gonçalves de brito dos Santos Paula Tamires Gomes dos Anjos departamento de Ciências Exatas e da Terra Universidade do Estado da Bahia (UNEB) Salvador Brazil Centro Educacional Expoente (CEdeX) Brasília Brazil

The solution of many conduction heat transfer problems is found by two-dimensional simplification using the analytical method since different points have different initial temperatures. The temperature at each point of a given element can be analyzed through the Heat Equation that, in some cases, converges to analytical solutions without precision and is far from the real. However, with the application of the Finite Difference Method (FDM), it is possible to solve it numerically in a relatively fast way, providing satisfactory results for the most varied boundary conditions and diverse geometries, characteristics of heat transfer problems by conduction. This study solved two problems inside a plate with and without heat generation involved in temperature distribution. Algorithms were built with the aid of the Matlab programming language, and applied to obtain a numerical solution using the FDM numerical method. The computational and analytical solutions were then compared. Under certain conditions of the parameters involved in the phenomenon of each problem, the numerical method was very efficient for presenting errors less than or equal to 0.003 and 0.03, respectively, for cases without and with heat generation.

关键词： Heat Transfer Conduction Finite Difference Method Numerical Method Matlab

Pathogenicity and Antimicrobial Resistance in Coagulase-Negative Staphylococci

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Journal of Biosciences and Medicines 2023年第5期11卷 9-29页

作者： debora brito Goulart department of Veterinary Microbiology and Preventive Medicine Iowa State University Ames IA USA

The coagulase-negative staphylococci (CoNS) group was considered saprophytic or rarely pathogenic for many years. Since the first case of septicemia caused by CoNS, there has been a progressive increase in the prevalence of healthcare-associated infections caused by CoNS. The CoNS group has emerged as one of the main causes of nosocomial infections related to vascular catheters and prostheses, especially among immunocompromised patients. This gradual increase in infections is due to the change in the relationship between patients and procedures since CoNS are closely related to devices implanted in the human body. CoNS are successful in colonizing the host because they have several virulence mechanisms, such as biofilm formation and production of enzymes and toxins, in addition to several mechanisms of resistance to antimicrobials. despite their great clinical relevance, few studies have focused on CoNS’s pathogenicity and resistance to antimicrobials, which reveals the current need to better understand the factors by which this group became pathogenic to humans and other animals. This review aims to synthesize the aspects related to the pathogenicity and antimicrobial resistance in CoNS.

关键词： Coagulase-Negative Staphylococci Antimicrobial-Resistance Biofilm Nosocomial Infections Pathogenesis Beta-Lactams Antibiotics Glycopeptide Antibiotics Macrolide Antibiotics Septicemia Bacteremia

Anti-inflammatory intestinal activity of Combretum duarteanum Cambess. in trinitrobenzene sulfonic acid colitis model

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World Journal of Gastroenterology 2017年第8期23卷 1353-1366页

作者： Gedson Rodrigues de Morais Lima Flavia Danniele Frota MachadoLarissa Lucena Périco Felipe Meira de Faria Anderson Luiz-Ferreira Alba Regina Monteiro Souza brito Cláudia Helena Pellizzon Clélia Akiko Hiruma-Lima Josean Fechine Tavares JoséMaria Barbosa Filho LeOnia Maria Batista departamento de Ciências Farmacêuticas Centro de Ciências da SaúdeLaboratório de Farmacologia do Trato GastrintestinalUniversidade Federal da Paraíba(UFPB)Cidade Universitária departamento de Fisiologia Instituto de BiociênciasUniversidade Estadual Paulista departamento de Biologia Estrutural e Funcional Instituto de BiologiaUniversidade Estadual de Campinas(UNICAMP departamento de Ciencias Biológicas Instituto de BiotecnologiaUniversidade Federal de Goiás departamento de Morfologia Instituto de BiociênciasUniversidade Estadual Paulista

To evaluate the anti-inflammatory intestinal effect of the ethanolic extract (EtOHE) and hexane phase (HexP) obtained from the leaves of Combretum duarteanum (Cd).METHODSInflammatory bowel disease was induced using trinitrobenzenesulfonic acid in acute and relapsed ulcerative colitis in rat models. Damage scores, and biochemical, histological and immunohistochemical parameters were *** Cd-EtOHE and Cd-HexP caused significant reductions in macroscopic lesion scores and ulcerative lesion areas. The vegetable samples inhibited myeloperoxidase increase, as well as pro-inflammatory cytokines TNF-α and IL-1β. Anti-inflammatory cytokine IL-10 also increased in animals treated with the tested plant samples. The anti-inflammatory intestinal effect is related to decreased expression of cyclooxygenase-2, proliferating cell nuclear antigen, and an increase in superoxide *** data indicate anti-inflammatory intestinal activity. The effects may also involve participation of the antioxidant system and principal cytokines relating to inflammatory bowel disease.

关键词： Combretum duarteanum Medicinal plants Combretaceae Inflammatory bowel disease Anti-inflammatory intestinal activity

Transmission of severe acute respiratory syndrome coronavirus 2 via fecal-oral:Current knowledge

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World Journal of Clinical Cases 2021年第28期9卷 8280-8294页

作者： Filipe Antônio França da Silva Breno Bittencourt de brito Maria Luísa Cordeiro Santos Hanna Santos Marques Ronaldo Teixeira da Silva Júnior Lorena Sousa de Carvalho Samuel de Sousa Cruz Gabriel Reis Rocha Gabriel Lima Correa Santos Kathlen Coutinho de Souza Rebeca Gabrielle Almeida Maciel Daiana Silva Lopes Natália Oliveira e Silva Márcio Vasconcelos Oliveira Fabrício Freire de Melo Instituto Multidisciplinar em Saúde Universidade Federal da BahiaVitória da Conquista 45002175BahiaBrazil departamento de Ciências Naturais Universidade Estadual do Sudoeste da BahiaVitória da Conquista 45002175BahiaBrazil departamento de Bioquímica e Biofísica Universidade Federal da BahiaSalvador 40.110-100BahiaBrazil Instituto Multidisciplinar em Saúde Universidade Federal da BahiaVitória da Conquista 45029-094BahiaBrazil

The pandemic caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)has resulted in more than 93 million cases and 2 million deaths in the ***-CoV-2 respiratory tract infection and its main clinical manifestations such as cough and shortness of breath are well known to the scientific ***,a growing number of studies have reported SARS-CoV-2-related gastrointestinal involvement based on clinical manifestations,such as diarrhea,nausea,vomiting,and abdominal pain as well as on the pathophysiological mechanisms associated with coronavirus disease ***,current evidence suggests SARS-CoV-2 transmission via the fecal-oral route and aerosol ***,studies have shown a high risk of contamination through hospital surfaces and personal ***,viable SARS-CoV-2 specimens can be obtained from aerosols,which raises the possibility of transmission through aerosolized viral particles from ***,the infection by SARS-CoV-2 via fecal-oral route or aerosolized particles should *** addition,a possible viral spread to sources of drinking water,sewage,and rivers as well as the possible risk of viral transmission in shared toilets become a major public health concern,especially in the least developed *** authors have emphasized the presence of viral RNA and even viable SARS-CoV-2 in human feces,studies on the possible fecal-oral coronavirus disease 2019 transmission become essential to understand better the dynamics of its transmission and,then,to reinforce preventive measures against this infection,leading to a more satisfactory control of the incidence of the infection.

关键词： COVID-19 SARS-CoV-2,Transmission Via fecal-oral

Identification and characterization of resistance and pathogenicity of Enterococcus *** samples of donor breast milk

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World Journal of Clinical Pediatrics 2020年第3期9卷 53-62页

作者： Luana Andrade Mendes Santana Nivea Nara Novais Andrade Lucas Santana Coelho da Silva Caline Novais Teixeira Oliveira Breno Bittencourt de brito Fabricio Freire de Melo Claudio Lima Souza Lucas Miranda Marques Marcio Vasconcelos Oliveira Oliveira Instituto Multidisciplinar em Saúde Universidade Federal da BahiaVitória da Conquista 45029-094BahiaBrazil

BACKGROUND Breast milk is the primary source of nutrition for *** babies frequently need nutritional support from Human Milk *** bacterial species of the genus Enterococcus are part of the microbiota of healthy donors,they may contaminate samples of pumped breast *** To identify and characterize the bacterial virulence and resistance in samples isolated from the nipple-areolar region,hands,and breast milk aliquots from donors at the Human Milk Bank of Municipal Hospital EsauMatos in the city of Vitória da Conquista,Bahia State,*** The personal hygiene and sanitation of donors were analyzed with the aim of identifying possible reasons for contamination of pumped *** samples as well as aliquots of unpasteurized and pasteurized milk from 30 participants were *** Enterococcus *** underwent a disk diffusion susceptibility test and molecular biology techniques to determine resistance and virulence *** Enterococcus *** identified in 30%of donors(n=9),and 11 specimens were *** to tetracycline was highly prevalent,being detectable in 63%of the isolates(n=7)and followed by intermediate sensitivity to ciprofloxacin,observed in 27%of the specimens(n=3).The efaA gene was found in 63%(n=7)of the isolates,while the ace gene was detected in 27%(n=3).CONCLUSION This study illustrates the importance of microbiological monitoring by Human Milk Banks and the need for alternatives to prevent the presence of Enterococcus *** hospital settings.

关键词： Enterococcus spp. Breast milk Virulence Human milk Pasteurization Antimicrobial resistanc

Effects of Barium Stress in Brassica juncea and Cakile maritima:The Indicator Role of Some Antioxidant Enzymes and Secondary Metabolites

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Phyton-International Journal of Experimental Botany 2021年第1期90卷 145-158页

作者： Houda Bouslimi Renata Ferreira Nesrine Dridi Pedro brito Susete Martins-Dias Isabel Caçador Noomene Sleimi Laboratory of Resources Materials and EcosystemsFaculty of Sciences of BizerteUniversity of CarthageJarzounaBizerte7021Tunisia Centro de Recursos Naturais e Ambiente Instituto Superior TécnicoUniversidade de LisboaLisbon1049-001Portugal Instituto Português do Mare da Atmosfera Rua Dr.Alfredo Magalhães RamalhoLisbon1495-006Portugal Centro de Recursos Naturais e Ambiente DBEInstituto Superior TécnicoUniversidade de LisboaLisbon1049-001Portugal Marine and Environmental Sciences Centre Faculdade de CiênciasUniversidade de LisboaCampo GrandeLisbon1749-016Portugal

Soil contamination by toxic trace metal elements,like barium(Ba),may stimulate various undesirable changes in the metabolic activity of *** plant responses are fast and with,direct or indirect,generation of reactive oxygen species(ROS).To cope with the stress imposed by the ROS production,plants developed a dual cellular system composed of enzymatic and non-enzymatic players that convert ROS,and their by-products,into stable nontoxic *** assess the Ba stress response of two Brassicaceae species(Brassica juncea,a glycophyte,and Cakile maritime,a halophyte),plants were exposure to different Ba concentrations(0,100,200,300 and 500µM).The plants response was evaluated through their morphology and development,the determination of plant leaves antioxidant enzymatic activities and by the production of plants secondary *** indicated that the two Brassicaceae species have the ability to survive in an environment containing Ba(even at 500µM).The biomass production of *** was slightly affected whereas an increase in biomass *** was *** stress imposed by Ba activated the antioxidant defense system in the two species,noticed by the changes in the leaves activity of catalase(CAT),ascorbate peroxidase(APX)and guaicol peroxidase(GPX),and of the secondary metabolites,through the production of total phenols and *** enzymatic response was not similar within the two plant species:CAT and APX seem to have a more important role against the oxidative stress in *** while in *** is ***,total phenols and flavonoids production was more significant in the plants aerial part than in the roots,of the both *** the two Brassicaceae species response was different,in both plants catalytic and non-catalytic transformation of ROS occurs,and both were able to overcome the Ba toxicity and prevent the cell damage.

关键词： Brassica juncea Cakile maritima antioxidant enzymes barium stress oxidative stress secondary metabolites

Cardiac Perforation by Firearm:Case Report

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World Journal of Cardiovascular Surgery 2018年第10期8卷 189-195页

作者： Gerez Fernandes Martins Claudio Assunpcao Barbara Jessen Gerez Martins Joao de deus e brito Cardiac Surgery department Institute of Cardiology State Aloysio de CastroRio de JaneiroBrazil Cardiology department Institute of Cardiology State Aloysio de CastroRio de JaneiroBrazil Surgery department Souza Marques UniversityRio de JaneiroBrazil

Heart trauma caused by a firearm projectile is the most fatal of cardiac injuries due to the great potential for death. The increase in the number of cases in recent years is observed, due to the greater urban violence. We report the case of a patient, a victim of firearm perforation, who suffered a cardiac transfixing lesion, with clinical presentation and with an unusual cardiac injury, operated at our service with success.

关键词： Heart Trauma Firearm Perforation Cardiac Lesion Urban Violence Cardiac Surgery

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催化裂化原料油的乳化过程

华东理工大学学报（自然科学版） 2002年第4期28卷 346-350页

作者：姚军品 Ivode brito J 翁惠新华东理工大学化工学院上海200237

将掺渣蜡油乳化成 W/O乳液 ,作为催化裂化原料油 ,在二次雾化和分子解聚作用下 ,可显著改善原料油雾化状况 ,降低结焦和干气收率。研究了掺渣蜡油的乳化过程 ,包括乳化剂的单剂筛选和复配以及乳化工艺条件。结果表明烷基酚聚氧乙烯醚 (M... 详细信息

将掺渣蜡油乳化成 W/O乳液 ,作为催化裂化原料油 ,在二次雾化和分子解聚作用下 ,可显著改善原料油雾化状况 ,降低结焦和干气收率。研究了掺渣蜡油的乳化过程 ,包括乳化剂的单剂筛选和复配以及乳化工艺条件。结果表明烷基酚聚氧乙烯醚 (M-2 )具有较好的乳化性能 ;乳化剂的复配能增加乳化原料油稳定性 ;适宜的掺水量是 w水 =0 .1 0～ 0 .1 5 ,加剂量为 w乳化剂 =0 .0 0 1～0 .0 0 1 2 5 ;乳化温度 70°C～ 80°C;乳液体系中水珠分布直径为 5μm～ 1 0μm,乳化原料油在 80°C时油水分层时间达 1

关键词：乳化过程催化裂化原料油乳化剂乳化条件石油化工乳化工艺

Luminescence investigation of Dy2O2S and Dy2O2SO4 obtained by thermal decomposition of sulfate hydrate

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Journal of Rare Earths 2016年第8期34卷 814-819页

作者： R.V.Rodngues L.Marciniak L.U.Khan J.R.Matos H.F.brito W.Strek Institute of Chemistry University of Sao Paulo Butanta 748 26077 Sao Paulo Brasil Institute of Low Temperature and Structure Research University of Wroctaw Oko1na 250-422 Wroclaw Poland

The yellow emitting dysprosium oxysulfide （Dy2O2S） and dysprosium oxysulfate （Dy202SO4） compounds were prepared from the thermal decomposition of hydrated dysprosium sulphate. The materials were characterized by using thermogravimetry （TG/DTG）, X-ray powder diffraction （XRD）, Fourier transform infrared （FTIR） and Raman spectroscopies. The thermal stability temperatures at around 1151 and 1313 K were determined for the Dy202S and Dy202SO4 materials, respectively. The photolumines- cence properties of the dysprosium oxysulfide were investigated, showing narrow emission bands assigned to the 4F9/2----＊6HJ intracon- figurational transitions of the Dy3＋ ion. The yellow emission color of this phosphor suggests that the Dy202S is a promising material for applications in LEDs.

关键词： Dy202S/Dy202SO4 sulfate thermal decomposition luminescence rare earths

Comparative mitogenome phylogeography of two anteater genera (Tamandua and Myrmecophaga;Myrmecophagidae, Xenarthra): Evidence of discrepant evolutionary traits

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Zoological Research 2021年第5期42卷 525-547页

作者： Manuel Ruiz-García Daniel Pinilla-Beltrán Oscar E.Murillo-García Christian Miguel Pinto Jorge brito Joseph Mark Shostell Laboratorio de Genética de Poblaciones Molecular-Biología Evolutiva Departamento de BiologíaFacultad de CienciasPontificia Universidad JaverianaBogotáDC 110231Colombia Grupo de Investigación en Ecología Animal Departamento de BiologíaFacultad de Ciencias Naturales y ExactasUniversidad del ValleApartado AéreoCali 25360Colombia Instituto de Ciencias Biológicas Escuela Politécnica NacionalQuito 17012759Ecuador Instituto Nacional de Biodiversidad(INABIO) Quito 170135Ecuador Math Science and Technology DepartmentUniversity of Minnesota CrookstonCrookstonMN 56716USA

The species within Xenarthra(sloths,anteaters,and armadillos)are quintessential South American *** the three groups,Vermilingua(anteaters)contains the fewest extant and paleontological ***,we sampled and sequenced the entire mitochondrial genomes(mitogenomes)of two Tamandua species(Tamandua tetradactyla and ***)(n=74)from Central and South America,as well as Myrmecophaga tridactyla(n=41)from South *** Tamandua,we detected three different *** oldest(THI)contained many specimens with the *** morphotype(but also several with the *** morphotype)and originated in southeastern South America(currently Uruguay)before moving towards northern South America,where the THII haplogroup *** primarily contained specimens with the *** morphotype(but also several with the *** morphotype)and was distributed in Central America,Colombia,and *** and THII yielded a genetic distance of 4%.THII originated in either northern South America or“in situ”in Central America with haplogroup THIII,which consisted of~50%*** and 50%*** *** was mostly located in the same areas as THII,i.e.,Central America,Ecuador,and Colombia,though mainly in the *** three haplogroups overlapped in Colombia and ***,*** and *** were not reciprocally *** this reason,we considered that a unique species of Tamandua likely exists,i.e.,*** contrast to Tamandua,*** did not show different morphotypes throughout its geographical range in the ***,two very divergent genetic haplogroups(MHI and MHII),with a genetic distance of~10%,were *** basal haplogroup,MHI,originated in northwestern South America,whereas the more geographically derived haplogroup,MHII,overlapped with MHI,but also expanded into central and southern South ***,Tamandua migrated from south to north whereas Myrmecophaga migrated from

关键词： Anteaters Genetic diversity Mitogenomes Myrmecophaga Neotropics Phylogeography Spatial structure Tamandua