检索结果-南通市图书馆

Arylhydrazones Derivatives Containing a Benzothiazole Moiety, Efficient Ligands in the Palladium-Catalyzed Mizoroki-Heck and Suzuki-Miyaura Cross-coupling Reactions under IR Irradiation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2017年第12期35卷 1881-1888页

作者： Fernando Ortega-Jiménez José guillermo Penieres-Carrillo José guadalupe López-Cortés M. Carmen Ortega-Alfaro Selene Lagunas-Rivera Departamento de Cieneias Qulmicas Facultad de Estudios Superiores Cuautitlān-UNAM Campo i Avenida lro. de Mayo s/n Cuautitlán Izcalli C.P. 54740 Estado de México México Instituto de Qulmiea UNAM Circuito Exterior Ciudad Universitaria Coyoacán C.P. 04360 Cuidad de México México Instituto de Ciencias Nucleares UNAM Circuito Exterior Ciudad Universitaria Coyoacán C.P. 04360 Ciudad de México México Catedrático CONA CyT-TecNM-Instituto Tecnológico de Tuxtla Gutiérrez Carretera Panamericana Km 1080 Col Juan Crispin Tuxtla Gutiérrez C.P. 29050 Chiapas México

A simple arylhydrazone containing the benzothiazole moiety which may be used as an efficient ligand in the palladium-catalyzed Mizoroki-Heck and Suzuki-Miyaura cross-coupling reactions, under infrared irradiation as an alternative source of energy, is presented. The reactions proceeded with extremely high efficiency under mild conditions and produced very good yields.

关键词： arylhydrazones palladium-catalyzed cross-coupling reaction IR-irradiation

-592 and -1082 interleukin-10 polymorphisms in pulmonary tuberculosis with type 2 diabetes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2013年第7期6卷 505-509页

作者： guadalupe García-Elorriaga Leila Vera-Ramírez guillermo del Rey-Pineda Csar Gonzlez-Bonilla Unidad de Investigación Mdica en Inmunología e Infectología Hospital de InfectologíaCentro Mdico Nacional La Raza(CMNR)Instituto Mexicano del Seguro Social(IMSS)Mexico CityMexico Banco Central de Sangre CMNRIMSSand Departamento de Infectología.Hospital Infantil de Mxico Federico Gómez.Secretaría de Salud(SSA) Mexico City.Mexico

Objective:To determine the polymorphisms of Interleukin-10(IL-10)(-592,-1082) in pulmonary tuberculosis(PTB)with and without type 2 diabetes(T2D).Methods:We studied a Mexican mestizo population of 37 patients with TB in remission(TBr) and 40 with active pulmonary TB (PTB),21 patients with TB + T2D.47 blood donors accepted,and 13 healthy health-care workers with tuberculin skin lest *** of IL-10 polymorphisms was performed by real-lime Polymerase chain ***:IL-10-592C/A presented in a greater proportion in healthy individuals than in patients with type 2 diabetes and TB in a not quite significant statistically ***-10-1082A/A presented more frequently in the group of patients with both diseases,not being statistically significant in comparison with the group of healthy subjects. Conclusions:This study describes two important new ***,it reveals that the IL-10 (-592 A/A and -592 C/C) polymorphisms were found in a greater proportion in a group of patients with T2D and TB than in healthy ***,the study provides evidence that the(-1082 G/G) polymorphism presented with greater frequency in healthy individuals than in patients with both ol these diseases.

关键词： Cytokines IL-10 Polymorphism Genotype Pulmonary tuberculosis

Interferon γ in patients with HIV/AIDS and suspicion or latent tuberculosis infection

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2013年第2期6卷 157-160页

作者： guadalupe Garcia-Elorriaga Mayte martinez-Velazquez Veronica Gaona-Flores guillermo del Rey-Pineda Cesar Gonzalez-Bonilla Unidad de Investigacion en Inmunologia e Infectologia Centro Medico Nacional La Raza(CMNR)Instituto Mexicano del Seguro Social(IMSS) Mexico CityMexico Hospital de Infectologia CMNRIMSSMexico CityMexico Banco Central de Sangre CMNR.Hospital Infantil de MexicoFederico Gomez.Dpto.de Infectologia

Objective:To assess the usefulness of IGRA test(QuantiFERON? -Cell mediated immune) compared with the tuberculin skin ***:A cross-sectional study was carried out in Mexico,25 infected patients with HIV-AIDS and the suspicion or with latent tuberculous infection （LTBI） who were>18 years of age and without treatment for tuberculosis（TB）,were enrolled in the ***:Median cluster of differentiation（CD4） count was 364 cells/μL and median HIV viral load was 50 copies/***,20 patients（80%） had at least one positive diagnostic test for LTBI:four（16%） had a positive tuberculin skin test and 19（76%）,a positive QuantiFERON ? -***:No agreement is found between the two diagnostic tests:k = -0.004,95%confidence interval（-0.2219,0.2210）.Additional longitudinal studies among HIV-infected populations with high prevalence of TB are needed to further assess the usefulness of IGRAs in this patient population.

关键词： AIDS HIV IGRA Interferonγ Latent tuberculosis infection

Reference penile size measurement and correlation with other anthropometric dimensions:a prospective study in 800 men

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2022年第6期24卷 620-623页

作者： martina Sole Ignacio Tobia Gonzalezi martin Compagnucci guadalupe Colucci Marcos Dalvit Bernardo Chiconi Omar A Layus guillermo Gueglio Gaston Rey-Valzacchi Department of Urology at Hospital Italiano Buenos Aires C1199ABBArgentina Department of Urology at Sanatorio Allende Cordoba 5000Argentina Department of Urology at Hospital Privado de la Comunidad Mar del Plata 7600Argentina Department of Urology at Hospital Central Mendoza 5500Argentina

Virility and sexual pleasure have long been associated with penile size and this,in turn,has typically been linked to some anthropometric measurements,such as foot size or height,leading to various misconceptions from both men and *** intention is to estimate penile size parameters in Argentina and evaluate the correlation between penile size and certain anthropometric *** is a cross-sectional,descriptive,multicenter,and observational *** patients who underwent a urological procedure were included in four hospitals located in different regions of the *** anthropometric measurements were obtained:height,weight,penile circumference,flaccid and stretched length,and foot length.A total of 8o0 patients were *** left foot was 26.4 *** flaccid penile length was 11.4(95%confidence interval[CI]:8-14)cm,and mean penile circumference was 10.1(95%CI:8-12)***,mean stretched penis was 15.2(95%CI:11-18.5)*** can confirm that estimates of the average penile measurements in Argentina are flaccid penis length of 11.4 cm,penile circumference of 10.1 cm,and stretching the penis to the maximum in flaccidity of 15.2 *** between flaccid penis length,stretched out,penile circumference,height,weight,and length of the left foot were evaluated,finding low or no correlation between those mentioned,exceptforflaccidand stretched length.

关键词： anthropometric measurements micropenis penile percentile

Clinical,radiological and molecular diagnosis correlation in serum samples from patients with osteoarticular tuberculosis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Biomedicine 2014年第7期4卷 581-585页

作者： guadalupe Garcia-Elorriaga Olga martinez-Elizondo guillermo del Rey-Pineda Cesar Gonzalez-Bonilla Unidad de Investigacion Medica en Inmunologia e Infectologia Hospital de InfectologiaCentro Medico Nacional La Raza(CMNR).Instituto Mexicano del Seguro Social(IMSS)Mexico City.Mexico(Medical Research Unit in Immunology and Infectious DiseaseHospital for Infectious Disease"La Raza"National Medical Center(CMNR).Mexican Social Security Institute(IMSS)Mexico CityMexico) Hospital de Ortopedia "Dr.Victorio de la Fuente Narvaez" Instituto Mexicano del Seguro Social(IMSS)Mexico CityMexico(Orthopedics Hospital " Dr.Victorio de la Fuente Narvaez"Mexican Social Security Institute(IMSS)Mexico CityMexico) Banco Central de Sangre CMNRIMSSand Departamento de InfectologiaHospital Infantil de Mexico Federico Gomez.Secretaria de Salud(SSA)Mexico CityMexico(Central Blood BankCMNR.IMSS and Department of Infectious Disease "Federico Comez" Children's Hospital.Health Ministry (SSA)Mexico CityMexico)

Objective:To assess the role of polymerase chain reaction(PCR)in serum sauples,in the diagnosis of osteoarticular tuberculosis(OTB)in a setting where only clinical and imaging diagnoses determine the ***:A total of 44 consecutive serum specimens were collected from clinically suspected OTB patients,based on clinical and radiological[X-ray or magnetic resonance imagng/computecl tomography]*** were scrcened by in-house nested *** addition,a few specimens were examined by Gram stain,acid-fast bacilli stain,histand routine bacterial culture.A total of 39 specimens were collected from patients suffering from other bone diseases of nontuberculous origin and included as negative ***:of the 44 clinically suspected OTB patients,in-house nested PCR was positive in 40(91%)cases;PCR was negative in 38(97%)negative *** and specificity of our in—house nested PCR was 90.3%and 97.4%,*** PCR report was available within 48 *** was possible to standardize serum PCR technique and in positive cases,a good n was observed in terms of an adequate treatment ***:Nested PCR in serum samples is a rapid,highly sensitive and specific modality for OTB detection,PCR should be performed in addition to clinical evaluation,imaging studies,acidfast bacilli staining,culture and histopathology diagnosis,if possible.

关键词： Osteoarticular tuberculosis Molecular diagnosis Nested polymerase chain reaction Sensitivity Specificity

Tuberculosis and hematopoietic stem cell transplant: Review of a difficult and often underestimated problem

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Infectious Diseases 2013年第4期3卷 70-78页

作者： guadalupe García-Elorriaga guillermo del Rey-Pineda Hospital for Infectious Disease "La Raza" National Medical Center Department of Infectious Disease and Intestinal Bacteriology Laboratory "Federico Gómez"Children’s HospitalDepartment of Health Central Blood Bank "La Raza"National Medical Center Social Security Mexican Institute

Recipients of solid organ transplants(SOT) and stem cell transplants(SCT) constitute a group of patients at risk for tuberculosis(TB) development. The prevalence of active TB in patients undergoing SOT is higher than in patients undergoing SCT, probably due to the shorter period of immunosuppression in the latter. We reviewed the importance of SCT in individuals with hematological malignancies. Most TB cases occur in transplant patients by reactivation of latent infection after immunosuppression, most often within the first year after transplant, leading to graft loss and in some cases, death. Relevant variables to assess the risk of TB infection in a transplant recipient include the donor's and recipient's medical histories, imaging results, microbiology and tuberculin skin test(TST) and interferon-gamma release assays(IGRA). TST is routinely performed in the donor and recipient before transplantation. If TST is > 5 mm in the recipient or > 10 mm in the donor, it is necessary to exclude active TB(pulmonary and renal). Chemopro-phylaxis is recommended in TST(+) recipients and in recipients with recent seroconversion, in donors with a history of untreated TB or in contact with an individual with active TB, if radiological images are suspicious and the IGRA is(+). The drug of choice is isoniazid. These topics are herewith reviewed.

关键词： Tuberculosis Prophylaxis Transplant Solid organ transplantation Hematopoietic stem cell transplantation

Metallic Interaction in Polythiophene-Ti Plasma Composites

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Polymer Chemistry 2013年第2期3卷 34-38页

作者： J. Cuauhtémoc Palacios Ma. guadalupe Olayo guillermo J. Cruz Departamento de Física Instituto Nacional de Investigaciones Nucleares Ocoyoacac México Facultad de Ingeniería Universidad Autónoma del Estado de México Toluca México

This work presents a study about the structure and morphology of thin plasma composite films of polythiophene (PTh) with metallic particles of Ti (PTh-Ti). The objective was to study the water affinity and electric conductivity in PTh with the addition of metallic phases. The hydrophilicity was studied with the contact angles formed between water and surfaces, and the electric conductivity was calculated with the resistance measured in a two-probe device. The structure and morphology of the composites were studied with X-ray diffraction and scanning electron microscopy. The results indicated that PTh-Ti formed thin films of hybrid composites with oxidized Ti and Fe additional particles released from the electrodes used in the syntheses. The metallic fraction resulted in 2 diffraction angles at 31.6° and 66.1° product of the complex interaction among Ti, resembling orthorhombic TiO2 structures, and PTh. The metallic particles and iodine, added as a dopant to the composites to increase conductivity, reduced the hydrophilicity with water in a competition between roughness and chemical composition. In these conditions, the contact angles resulted between 46° and 75°. The electric conductivity was about 10-6 S/m increasing one order of magnitude with the metallic fraction. However, the high resistance of the polymeric fraction apparently dominates the transference of charges.

关键词： Polythiophene Titanium Composites Plasma

Meyer-Neldel Rule in Plasma Polythiophene Thin Films

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Polymer Chemistry 2014年第3期4卷 31-37页

作者： J. Cuauhtemoc Palacios M. guadalupe Olayo guillermo J. Cruz J. A. Chávez-Carvayar Departamento de Física Instituto Nacional de Investigaciones Nucleares Ocoyoacac México Facultad de Ingeniería Universidad Autónoma del Estado de México Toluca México.

In polymers, the electronic activation energy depends on the fragmentation, crosslinking, dopants, moisture and in general on the structure-environment interaction. This has a special importance in plasma polymers because fragmentation and crosslinking are usually higher than in other polymers. In this work, DC electrical conductivity of polythiophene thin films prepared by plasma (pPTh) was studied using the Meyer-Neldel (MN) rule to calculate the characteristic MN energy and temperature as a function of moisture and metallic dopants. The experimental data for pPTh synthesized in different conditions indicated that EM = 32 meV and TM = 373 K, suggesting a thermally activated conduction mechanism;however, in polymer-metal matrices with metal concentration higher than the percolation threshold, the conduction mechanism is different causing that the MN rule was only partially fulfilled. The congruence of the experimental data with the multiexcitation entropy model is discussed.

关键词： Polythiophene Plasma Conductivity Meyer-Neldel Rule Multi-Excitation Entropy Model

Chemical Structure of TiO Organometallic Particles Obtained by Plasma

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Nanoparticles 2013年第3期2卷 229-235页

作者： Ma. guadalupe Olayo Francisco González-Salgado guillermo J. Cruz Lidia Ma. Gómez Genoveva García-Rosales Maribel Gonzalez-Torres Osvaldo G. Lopez-Gracia Departamento de Física Instituto Nacional de Investigaciones Nucleares Ocoyoacac México Departamento de Física Instituto Nacional de Investigaciones Nucleares Ocoyoacac México Departamento de Posgrado Instituto Tecnológico de Toluca Metepec México Departamento de Física Instituto Nacional de Investigaciones Nucleares Ocoyoacac México Posgrado en Ciencia de Materiales Facultad de Química Universidad Autónoma del Estado de México Toluca México Departamento de Física Instituto Nacional de Investigaciones Nucleares Ocoyoacac México Posgrado en Ciencias Químicas Facultad de Química Universidad Autónoma del Estado de México Toluca México Departamento de Posgrado Instituto Tecnológico de Toluca Metepec México

This work presents a study about the chemical structure of titanium oxide (TiO) particles synthesized by plasmas using titanium tetrapropoxide, Ti(-O-CH2-CH2-CH3)4. In plasmas, practically all chemical bonds are susceptible to participate in the reactions producing different results than those obtained by the traditional chemical routes. The particles obtained this way are semispheres and fibers grouped in random and layered structures in the 120-500 nm interval and mean diameter of 86.4 nm (fibers) and 308.6 nm (semispheres). The analysis of the resulting TiO structure was performed by IR and XPS finding that the main chemical state of Ti in these conditions was O2-Ti-O2 (Ti surrounded by O) which is part of the precursor structure, however, in O, the main chemical state was Ti-O-Ti formed with the rupture of the pre- cursor Ti-O-C bonds. These last bonds reduce the conjugation between the structure of both elements, O2-Ti-O2 and Ti-O-Ti, to produce organometallic compounds. Other chemical states appeared showing consecutive dehydrogenation steps during the synthesis with the formation of multiple bonds as a consequence of the continuous collisions in the plasma. These results allow us to follow the chemical reactions promoted by this kind of plasmas to produce TiO nanoparticles which are essentially conformed of intensive dehydrogenation.

关键词： TiO Particles Plasma Degradation XPS TTP