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Ab InitioMolecular Orbital Calculation for Optical and Electronic Properties Evaluation of Small and Medium Size Silicon Nano-Clusters Found in Silicon Rich Oxide Films

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Journal of Modern Physics 2013年第11期4卷 1-26页

作者： Néstor David Espinosa Torres josé Francisco Javier Flores Gracia josé Alberto Luna López Juan Carlos Ramírez García Alfredo Morales Sánchez josé Luis Sosa Sánchez David Hernández de la luz Francisco Morales Morales Research Center for Advanced Materials S.C. Unit Monterrey-PIIT Apodaca México Research Center for Semiconductor Devices CIDS-ICUAP-BUAP Puebla México The Faculty of Chemical Sciences BUAP Puebla México

In systems in atomic and nano scales such as clusters or agglomerates constituted of particles from a few to less than one hundred of atoms, quantum confinement effects are very important. Their optical and electronic properties are often dependent on the size of the systems and the way in which the atoms in these clusters are bonded. Generally, these nano-structures display optical and electronic properties significantly different of those found in corresponding bulk materials. Silicon agglomerates found in Silicon Rich Oxide (SRO) films have optical properties, which have reported as depended directly on nano-crystal size. Furthermore, the room temperature photoluminescence (PL) of Silicon Rich Oxides (SRO) has repeatedly generated a huge interest due to their possible applications in optoelectronic devices. However, a plausible emission mechanism has not yet widespread acceptance of the scientific community. In this research, we employed the Density Functional Theory with a functional B3LYP and a basis set 6 - 31G* to calculate the optical and electronic properties of small (six to ten silicon atoms) and medium size clusters of silicon (constituted of eleven to fourteen silicon atoms). With the theoretical calculation of the structural and optical properties of silicon clusters, it is possible to evaluate the contribution of silicon agglomerates in the luminescent emission mechanism experimentally found in thin SRO films.

关键词： Nano-Crystals Silicon Clusters Silicon-Rich Oxide Luminescence Magic-Number

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New Interpretations about Clonal Architecture for the Sour Pitaya (Stenocereus gummosus, Cactaceae), Arising from Microsatellite Markers of de novoIsolation and Characterization

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Open Journal of Genetics 2015年第1期5卷 1-11页

作者： Oscar Adrián Lozano Garza josé L. León de la luz Susana Favela Lara Francisco J. García de León Laboratorio de Genética para la Conservación Centro de Investigaciones Biológicas del Noroeste La Paz Mexico Departamento de Ecología Facultad de Ciencias Biológicas Universidad Autónoma de Nuevo LeónSan Nicolás de los Garza Mexico

The use of molecular markers has improved the ecological and evolutionary research in the case of clonal reproduction species, allowing the identification of boundaries among clonal modules (ramets), genetic individuals (genets), and populations. Microsatellite markers were developed for Stenocereus gummosus, a columnar cactus with both sexual and clonal reproduction which is distributed in the Sonoran Desert, Mexico. 454-Pyrosequencing reads were analyzed to detect microsatellite markers. Forty primer pairs were screened to look for polymorphism. Nine loci were genotyped for two S. gummosus localities. Sampling strategy was intended to avoid collecting a genetic individual more than once, considering that clonal architecture for this cactus was previously deduced as clumped. Polymorphic loci exhibited low allele count, ranging from 2 - 7 (mean of 3.78 ± 0.62 SE);mean heterozygosity values were 0.221 and 0.234 HO and 0.408 and 0.306 HE, with FIS of 0.383 and 0.299, for peninsular and continental localities respectively. Unexpectedly, some multilocus genotypes were found repeated within locality, which were assumed as clones since data was evaluated as sufficient (clonal richness R of 0.966 and 0.897). These results were different from those previously reported: the distribution of clones might as well be intermingled, having a minimum ramet dispersion distance of 30 m. This characteristic was also consistent with the recent colonization proposed for this and other arid lands plants. A wider genetic neighborhood, due to clone dispersion might affect diversity indexes while increasing the chance of geitonogamy and mating among relatives. The markers isolation and its population characterization allowed addressing new questions about S. gummosus ecology, clonal reproduction and reproductive biology.

关键词： Cactaceae Clonal Architecture Microsatellites Pyrosequencing Stenocereus

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Arachidyl amido cholanoic acid improves liver glucose and lipid homeostasis in nonalcoholic steatohepatitis via AMPK and mTOR regulation

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World Journal of Gastroenterology 2020年第34期26卷 5101-5117页

作者： David Fernández-Ramos Fernando Lopitz-Otsoa Laura Delacruz-Villar Jon Bilbao Martina Pagano Laura Mosca Maider Bizkarguenaga Marina Serrano-Macia Mikel Azkargorta Marta Iruarrizaga-Lejarreta Jesús Sot Darya Tsvirkun Sebastiaan Martijn van Liempd Felix M Goni Cristina Alonso María luz Martínez-Chantar Felix Elortza Liat Hayardeny Shelly C Lu joséM Mato Precision Medicine and Metabolism Laboratory Centro de Investigación Cooperativa en Biociencias(CIC bioGUNE)Derio 48160BizkaiaSpain CIBERehd-Centro de Investigación Biomédica en Red de enfermedades hepáticas y digestivas Madrid 28029Spain Department of Precision Medicine University of Campania"Luigi Vanvitelli"Naples 80138Italy Liver Disease Laboratory Centro de Investigación Cooperativa en Biociencias(CIC bioGUNE)Derio 48160Spain Proteomics Platform Centro de Investigación Cooperativa en Biociencias(CIC bioGUNE)Derio 48160Spain OWL Metabolomics Derio 48160Spain Instituto Biofisika(UPV/EHU CSIC)Leioa 48940SpainDepartamento de Bioquímica y Biología MolecularUniversidad del País VascoLeioa 48940Spain Pre-clinical and Chemistry Manufacturing and ControlsGalmed PharmaceuticalsTel Aviv 6578317Israel Metabolomics Platform Centro de Investigación Cooperativa en Biociencias(CIC bioGUNE)Derio 48160Spain Division of Digestive and Liver Diseases Cedars-Sinai Medical CenterLos AngelesCA 90048United States

BACKGROUND Arachidyl amido cholanoic acid(Aramchol)is a potent downregulator of hepatic stearoyl-CoA desaturase 1(SCD1)protein expression that reduces liver triglycerides and fibrosis in animal models of *** a phase IIb clinical trial in patients with nonalcoholic steatohepatitis(NASH),52 wk of treatment with Aramchol reduced blood levels of glycated hemoglobin A1c,an indicator of glycemic *** To assess lipid and glucose metabolism in mouse hepatocytes and in a NASH mouse model[induced with a 0.1%methionine and choline deficient diet(0.1MCD)]after treatment with *** Isolated primary mouse hepatocytes were incubated with 20μmol/L Aramchol or vehicle for 48 ***,analyses were performed including Western blot,proteomics by mass spectrometry,and fluxomic analysis with 13C-uniformly labeled *** the in vivo part of the study,male C57BL/6J mice were randomly fed a control or 0.1MCD for 4 wk and received 1 or 5 mg/kg/d Aramchol or vehicle by intragastric gavage for the last 2 *** metabolomics were assessed using ultra-high-performance liquid chromatography-time of flight-MS for the determination of glucose metabolism-related *** Combination of proteomics and Western blot analyses showed increased AMPK activity while the activity of nutrient sensor mTORC1 was decreased by Aramchol in *** translated into changes in the content of their downstream targets including proteins involved in fatty acid(FA)synthesis and oxidation[PACCα/β(S79),SCD1,CPT1A/B,HADHA,and HADHB],oxidative phosphorylation(NDUFA9,NDUFB11,NDUFS1,NDUFV1,ETFDH,and UQCRC2),tricarboxylic acid(TCA)cycle(MDH2,SUCLA2,and SUCLG2),and ribosome(P-p70S6K[T389]and P-S6[S235/S236]).Flux experiments with 13Cuniformely labeled glucose showed that TCA cycle cataplerosis was reduced by Aramchol in hepatocytes,as indicated by the increase in the number of rounds that malate remained in the TCA ***,liver metabolomic analysis showed

关键词： Nonalcoholic fatty liver disease Steatohepatitis Methionine and choline deficient diet Tricarboxylic acid cycle Hemoglobin A1c Stearoyl-CoA desaturase 1

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Alternatives of Control of Dawn Crop and Crop Mole in Pre-Harvest in Peasant Fruit

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Agricultural Sciences 2019年第1期10卷 17-24页

作者： Vicente Luíz de Carvalho Rodrigo luz da Cunha Angelo Albérico Alvarenga Pedro Henrique Abreu Moura joséClélio de Andrade Paulo Márcio Norberto Agricultural Research Company of Minas Gerais EPAMIGCampus UFLALavraBrazil

Fruit rot, besides causing losses in production, reduces the final quality of the product interfering in the commercialization. The objective of this work was to evaluate the efficiency of alternative products applied to pre-harvest for control of brown rot (Monilinia fructicola) and soft rot (Rhizopus spp.) In peaches. The experiment was conducted in the municipality of Nepomuceno-MG, in a peach orchard of the cultivar Diamante. The experimental design was a randomized block design with 7 treatments and 3 replicates, with field plots formed by 12 plants (arranged in 3 rows), being considered for the evaluations only the two central plants. Three applications were made at flowering and at 21;7 and 3 days before harvest, with solutions containing the following treatments: 1-Clove oil 0.1%;2-silicate clay 1.5%;3-Phosphite K 0.20%;4-Benzalkonium chloride 0.25%;5-Azoxystrobin 0.02%;6-Iprodione 0.15%;7-Witness (water only). Treatments 4 and 5 were applied only at 21 and 7 days before harvest. Ten fruits were selected and placed in sterile trays under uncontrolled conditions, with disease evaluations at 3 and 6 days after the beginning of storage in 2005 and at 3;6 and 9 days in 2006. The iprodione controlled the incidence of M. fructicola and had no effect on Rhizopus spp. Clove oil controlled the incidence and severity of M. fructicola by the fifth day and Rhizopus spp. by the sixth day. The phosphites of k, benzalkonium chloride and azoxystrobin were efficient in controlling the incidence and severity of Rhizopus spp. and had no effect on M. fructicola.

关键词： Peach Fruit Rot Pre-Harvest Control

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Development of Psychic Pain in the Context of Microcephaly and Abortion: Systematic Review and Meta-Analysis

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Health 2017年第2期9卷 376-391页

作者： Uilna Naté rcia Soares Feitosa Danilo Ferreira de Sousa Poliana Moreira de Medeiros Carvalho Raquel Guimarã es Kanda Joaquim Alves Diniz Luis Clescivan Ferreira Nobre Dayse Christina Rodrigues Pereira luz Wilma josé Santana Cí cera Jaqueline Sobreira Andriola Né lio Barreto Vieira Antonio Souto Gouveia Alberto Olavo Advincula Reis Caio parente Barbosa Modesto Leite Rolim Neto Programa de Pó s-Graduaç ã o em Ciê ncias da Saú de Faculdade de Medicina do ABC-FMABC Santo Andr&eacute S&atilde o Paulo Brazil Faculdade de Juazeiro do Norte FJN Juazeiro do Norte Cear&aacute Brazil Faculdade de Medicina Est&aacute cio/FMJ Juazeiro do Norte Cear&aacute Brazil Faculdade de Medicina Universidade Federal do Cariri-UFCA Barbalha Cear&aacute Brazil Programa de Pó s-Graduaç ã o em Saú de Pú blica Universidade de S&atilde o Paulo-USP S&atilde o Paulo Brazil

Background: In the year of 2015, evidence of a relation between Zika virus and the development of microcephaly in pregnant women who acquired the infection started to come up. Thus, it is extremely necessary that the analysis of the affliction affects these women in a biopsychosocial context, in order to discuss and comprehend in a more reliable manner the affection from the perception of the disease, origin, and psychic pain mechanisms. Methods: Systematic review with meta-analysis, using the PRISMA protocol. The study period was 2016 and the keywords included “microcephaly” and “abortion”, one at a time and then combined with the Boolean operator “AND.” The statistical analysis was done using the BioEstat 5.0 program. Calculation was based on an adjustment of Mantel-Haenszel random effect. Results: 41,046 registrations were found. Of this total, 40,992 articles were excluded because they only mentioned the fact or referred to spontaneous abortion, did not analyze abortion on the eyes of microcephaly, only treated with Zika virus, or were repeated. Limitations: Psychic pain and suffering need studies in the mother/son/disease relation, which were not found in the databases. The article was based on other sources. Conclusions: The pains vary in different areas of the female life, since internal conflicts, gender violence, stress, fear, insecurity, psychologic torture, grieve, loneliness, among other kinds of psychic suffering. More studies on psycho-emotional themes need to be promoted to discuss the female suffering on a wider vision, closer to the reality faced by these women.

关键词： Abortion Microcephaly Psychic Pain

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Performance of a serological IgM and IgG qualitative test for COVID-19 diagnosis:An experimental study in Brazil

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World Journal of Experimental Medicine 2022年第5期12卷 100-103页

作者： Fabrício Freire de Melo Lilian Martins Oliveira Diniz joséNélio Januário João Fernando Gonçalves Ferreira Rafael Santos Dantas Miranda Dórea Breno Bittencourt de Brito Hanna Santos Marques Fabian Fellipe Bueno Lemos Marcel Silva luz Samuel Luca Rocha Pinheiro Dulciene Maria de Magalhães Queiroz Instituto Multidisciplinar em Saúde Universidade Federal da BahiaVitória da Conquista 45029-094BahiaBrazil Departamento de Pediatria Universidade Federal de Minas GeraisBelo Horizonte 31270-901Brazil Núcleo de Ações e Pesquisa em Apoio Diagnóstico Universidade Federal de Minas GeraisBelo Horizonte 31270-901Brazil Laboratory of Research in Bacteriology Universidade Federal de Minas GeraisBelo Horizonte 31270-901Brazil Laboratory of Bacteriology Faculdade de MedicinaUniversidade Federal de Minas GeraisBelo Horizonte 31270-901Brazil Campus Vitória da Conquista Universidade Estadual do Sudoeste da BahiaVitória da Conquista 45029-094Brazil

Qualitative antibody tests are an easy,point-of-care diagnostic method that is useful in diagnosing coronavirus disease 2019,especially in situations where reverse transcription-polymerase chain reaction is ***,some factors are able to affect its sensitivity and accuracy,which may contribute to these tests not being used as a first-line diagnostic tool.

关键词： Serological test IgM IgG COVID-19 Diagnosis Antibody

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Quality of life of patients with brucellosis in an endemic area of Mexico

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Health 2012年第9期4卷 574-578页

作者： Guillermina García-Juárez Efrén Ramírez-Bribiesca luz M. Hernández-Calva josé D. Vázquez-Vázquez Alfonso Pérez-Sánchez Christine M. Budke College of Veterinary Medicine and Biomedical Science Texas A&M University College Station USA El Colegio de Tlaxcala AC San Pablo Apetatitlán Tlaxcala México Facultad de Agrobiología Universidad Autónoma de Tlaxcala Tlaxcala México

The aim of this study was to evaluate quality of life of patients infected with brucellosis compared to a control population from the same geographic region. The quality of life of brucellosis positive and brucellosis negative individuals from rural and urban areas of Mexico was evaluated using the Short-Form SF-36 Health Survey. This survey is a generic measure of physical and mental health-related quality of life. Data analysis was performed using one-way analysis of variance and the Tukey test. Brucellosis patients had lower overall quality of life compared with the controls. Brucellosis patients from rural areas had lower overall quality of life (P < 0.05) compared with brucellosis patients from urban areas. In conclusion, human brucellosis affects quality of life, with patients living in rural areas most severely impacted. This may be due to the lack of local public policies and programs for the prevention, diagnosis, and treatment of brucellosis.

关键词： Brucellosis Quality of Life

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Development and characterization of 3CaO·P_(2)O_(5)-SiO_(2)-MgO glass-ceramics with different crystallization degree

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Journal of Advanced Ceramics 2013年第4期2卷 378-388页

作者： Juliana Kelmy M.F.DAGUANO Paulo A.SUZUKI Kurt STRECKER joséMartinho Marques de OLIVEIRA Maria Helena Figueira Vaz FERNANDES Claudinei SANTOS Universidade de São Paulo-Escola de Engenharia de Lorena USP-EEL-Pólo Urbo-Industrials/nGleba AI-6Lorena-SPCEP 12600-000Brazil Universidade Federal de São João del-Rei -UFSJ-CENENCampus S^(to)Antônio-Praça Frei Orlando 170-CentroS.J.del-Rei-MG.CEP 36307-352Brazil Escola Superior Aveiro Norte Edifício Rainha3720-232 O.AzeméisPortugal Universidade de Aveiro Campus Universitário de Santiago 3810-193 AveiroPortugal Universidade do Estado do Rio de Janeiro-Faculdade de Tecnologia de Resende-UERJ-FAT-Rod.Presidente Dutra km298Resende-RJCEP 27537-000Brazil

The CaO-P_(2)O_(5)-SiO_(2)-MgO system presents several compounds used as biomaterials such as hydroxyapatite(HA),tricalcium phosphate(TCP)and TCP with magnesium substituting partial calcium(TCMP).Theβ-TCMP phase with whitlockite structure has interesting biological features and mechanical properties,meeting the requirements of a bioactive material for bone *** this work,the production of Mg-doped TCP,β-TCMP,has been investigated by crystallization from a glass composed of 52.75 wt%3CaO·P_(2)O_(5),30 wt%SiO_(2)and 17.25 wt%MgO(i.e.,31.7 mol%CaO,10.6 mol%P_(2)O_(5),26.6 mol%MgO and 31.1 mol%SiO_(2))using heat treatments between 775℃and 1100℃for up to 8 *** devitrification process of the glass has been accompanied by differential scanning calorimetry(DSC),high-resolution X-ray diffraction(HRXRD),relative density and bending strength *** characterization by HRXRD and DSC revealed the occurrence of whitlockite soon after the bulk glass preparation,a transient non-cataloged silicate between 800℃and 1100℃,and the formation of diopside in samples treated at 1100℃as crystalline *** overall crystalline fraction varied from 26%to 70%depending on the heat ***,contraction of the a-axis lattice parameter and expansion of the c-axis lattice parameter of the whitlockite structure have been observed during the heat treatments,which were attributed to theβ-TCMP formation with the partial substitution of Ca^(2+)by Mg^(2+).Relative densities near 99%and 97%for the glass and glass-ceramics respectively indicated a discrete reduction as a function of the devitrification *** strengths of 70 MPa and 120 MPa were determined for the glass and glass-ceramic material crystallized at 975℃for 4 h,respectively.

关键词： glass-ceramics heat treatment high-resolution X-ray diffraction(HRXRD) bending strength

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A potential clinical based score in hepatitis C viruscirrhotic patients to exclude small hepatocellular carcinoma

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Hepatoma Research 2018年第4期4卷 14-24页

作者： Denise Cerqueira Paranaguá-Vezozzo Celso Eduardo Lourenco Matielo Daniel Ferraz de Campos Mazo Lucas Souto Nacif Mario Guimaraes Pessoa Gleicy luz Reinoso Pereira Roque Gabriel Rezende de Lima Patricia Momoyo Yoshimura Zitelli Suzane Kioko Ono Flair joséCarrilho Division of Gastroenterology and Hepatology Department of GastroenterologyUniversity of Sao Paulo School of MedicineSao Paulo 05403-900Brazil Sao Paulo Clínicas Liver Cancer Group Sao PauloCancer Institute of Sao PauloUniversity of Sao Paulo School of MedicineSao Paulo 01246-000Brazil Division of Gastroenterology(Gastrocentro) School of Medical SciencesUniversity of CampinasCampinas 13083-878Brazil

Aim: Hepatitis C virus (HCV) cirrhosis is an important cause of hepatocellular carcinoma (HCC). This study aimed to identify factors of HCC presence among HCV cirrhotic patients with and without small diameter HCC (≤ 3 cm). Methods: A case control transversal study between 1998 and 2003 including 93 patients: 31 with small diameter HCC and 62 without HCC. Groups were matched by age and gender. Multiple logistic regression analysis using Akaike Information Criteria to estimate the probability of HCC was performed. A model score was generated and bootstrap analysis was performed for internal validation. Results: Three significant laboratorial variables for HCC presence were found: alanine aminotransferase > 37 U/L [odds ratio (OR): 7.43 (1.61-34.19),P = 0.01], alpha-fetoprotein > 20 ng/mL [OR: 16.2 (4.17-63.01),P < 0.001] and platelet count < 100,000/mm3 (OR: 3.62 (1.43-9.14),P = 0.007)A model score with an area under curve of 0.79 (95% CI: 0.7-0.89) was built based on these variables. The negative predictive value of those classified as at low risk of HCC was 99.1%. Conclusion: An easy and practical model score was generated. It may be an auxiliary tool for identification of HCV patients with low probability of small diameter HCC at initial evaluation composed of three serum examinations used in routine outpatient clinical practice.

关键词： Clinical score hepatocellular carcinoma hepatitis C

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Musical and Photographic Stimulations on the Symptomatology of Alzheimer’s Disease in Elderly

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World Journal of Neuroscience 2020年第4期10卷 155-165页

作者： Jamylly Ferreira Targino Silva Mayara Leite Alves da Silva Maykon Wanderley Leite Alves-da-Silva Douglas Nijenhuis de Castro Euclides Maurício Trindade Filho Janise Dal Pai Lysien Ivania Zambrano Valtuir Barbosa Felix Elionai Dias Soares Camila Conceição luz Soares Albérico josé de Moura Saldanha Filho Magnúcia de Lima Leite Emanuel Guilherme de Almeida Carvalho Matheus Santos Freitas josé Claudio da Silva State University of Health Sciences of Alagoas (UNCISAL) Maceió Brazil CESMAC University Center Maceió Brazil Federal University of São Paulo (UNIFESP) S&#227o Paulo Brazil Facultad de Ciencias Medicas Universidad Nacional Autónoma de Honduras Tegucigalpa Honduras Division of Therapeutic Support and Diagnosis of HUPAA/UFAL/EBSERH Maceió Brazil Tiradentes University Center (UNIT-AL) Maceió Brazil Faculdade Tiradentes (FITS) Recife Brazil

Background: Alzheimer’s disease is a progressive and neurodegenerative disorder characterized by deterioration of brain functions. Psychosocial interventions such as music and photographic stimuli may contribute to cognitive and sensory exercise or rehabilitation. Objective: Evaluate musical and photographic stimuli in elderly people with Alzheimer’s disease. Methods: It is an uncontrolled clinical trial, before-after type, eleven subjects composing the sample. Participants were submitted to Katz Index, Autobiographical Memory Test, GDS-15, Mini-Mental State Examination. The collection instruments were used on the first and last day of intervention, individually. There were 2 sessions in the week with duration of 50 minutes totaling 20 sessions. Data were analyzed by descriptive and inferential statistics and as variables expressed as mean standard deviation. Results: There was a significant effect of cognitive activity (P , it was observed that a small advance (P = 0.05) of the daily life activities. With the analysis of GDS-15, it is verified that they are more effective for the increase of the previous self-estimation of the therapy (P = 0.94). In the application of the AMT, it is observed that there was a better recruitment of the memory for the neutral words. Conclusion: Musical and photographic stimuli had a positive effect on the cognitive level, daily life activities and autobiographical memory in seniors with Alzheimer’s disease.

关键词： Alzheimer’s Disease Health of the Elderly Depression Memory

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