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1999中国钢铁年会

作者： R.Gonzales m.a.pedroza m.Herrera K.Bergman Hylsa Flat Product Division Mexico Danieli Centro met.

DANIELI CENTRO mET公司的电弧炉技术——DANARC,是建立在自1970年以来在电炉炼钢设备的设计和制造基础之上的。DANARC 技术不仅包含电炉本身,而且也包含采用现代工艺技术所需要的所有辅助设备。DANIELI直流电炉技术的最新发展是双电极... 详细信息

DANIELI CENTRO mET公司的电弧炉技术——DANARC,是建立在自1970年以来在电炉炼钢设备的设计和制造基础之上的。DANARC 技术不仅包含电炉本身,而且也包含采用现代工艺技术所需要的所有辅助设备。DANIELI直流电炉技术的最新发展是双电极直流电弧炉。

关键词：双电极直流电弧电极消耗设计特点热装还原铁

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直接还原铁和/或铁水装料的竖炉技术

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河南冶金 2001年第1期9卷 26-28页

作者： D.Yanez m.a.pedroza J.Ehle H.Knapp 张瑞宋洪磊马晓红安阳钢铁集团有限公司

FUCHS Systemtechnik自1989年开发竖炉技术以来,由于废钢在坚炉中预热的环保效应,其在电炉炼钢方面取得的收益在不断提高。为了满足最终产品残余元素含量越来越严的要求,同时由于简单的经济原因,使用DRI(直接还原铁),HBI(压铁)或铁水装... 详细信息

FUCHS Systemtechnik自1989年开发竖炉技术以来,由于废钢在坚炉中预热的环保效应,其在电炉炼钢方面取得的收益在不断提高。为了满足最终产品残余元素含量越来越严的要求,同时由于简单的经济原因,使用DRI(直接还原铁),HBI(压铁)或铁水装料的交、直流技术已在全世界28个坚炉中得到了应用和验证。竖炉已证明是最为经济的冶炼工艺炉子这一,每天出钢可达到40炉。本文将在几个方面进行论证,重点集中在DRI/HBI选用和铁水装料上。依据铁水所占的百分比,电炉电耗可降到160kWh/t钢水以下。预热竖炉的投资用不了一年即可回收。

关键词：直接还原铁压铁残余元素竖炉

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Influence of local and landscape environmental factors on alpha and beta diversity of macroinvertebrates in Andean rivers

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Journal of mountain Science 2023年第9期20卷 2487-2501页

作者： DIAZ-ROJAS Camila A pedroza-RAmOS Adriana X BARRERA-HERRERA July A ROA-FUENTES Camilo A Ecology Unit in Aquatic Systems Research Group Pedagogical and Technological University of ColombiaUPTCAvenida Central del Norte 39-115TunjaBoyacáColombia

Research on macroinvertebrate community structure in Andean rivers has been oriented towards describing patterns of alpha and gamma diversity by taking into account environmental predictors at local spatial scales(e.g.,micro-and mesohabitats).However,the patterns of beta diversity and the importance of landscape-scale variables have been evaluated to a lesser *** objective of this study was to describe the patterns of alpha and beta diversity of benthic macroinvertebrates in the Andean rivers of the Orinoco basin and their relationship with local and landscape environmental variation.A stratified random sampling of macroinvertebrates was carried out at 40 sites(comprising an altitudinal range of between 500 and 2900 m.a.s.l.),local and landscape variables were *** results showed that the variation of alpha diversity was influenced by local and landscape variables,which are directly and indirectly related to the contribution of sediments,substrate composition and flow velocity,providing a heterogeneity of *** beta diversity was explained by the combined effect of local and landscape *** the beta diversity phenomena,turnover was predominant while nestedness presented a minor contribution and both were explained in greater proportion by local descriptors and some landscape variables,specifically those of a geomorphological *** results concur with the view of an environmental and spatial hierarchy within the river habitat and highlight the influence of multiple scales on macroinvertebrate *** above suggests that both local and landscape scales must necessarily be considered for environmental management and the conservation of Andean lotic ecosystems.

关键词： Andean lotic systems Andean agroecosystems Instream habitat Landcover Turnover Nestedness

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Structural and biological engineering of 3D hydrogels for wound healing

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生物活性材料(英文) 2023年第6期24卷 197-235页

作者： mohammad Hadi Norahan Sara Cristina pedroza-González mónica Gabriela Sánchez-Salazar mario moisés Álvarez Grissel Trujillo de Santiago Escuela de Ingeniería y Ciencias Tecnológico de MonterreyMonterreyNL64849Mexico Centro de Biotecnología-FEmSA Tecnológico de MonterreyMonterreyNuevo LeónCP64849Mexico Departamento de Bioingeniería Tecnológico de MonterreyMonterreyNuevo LeónCP64849Mexico

Chronic wounds have become one of the most important issues for healthcare systems and are a leading cause of death *** dressings are necessary to facilitate wound *** wound dressings may substantially reduce healing time,reduce the risk of recurrent infections,and reduce the disability and costs *** the path of engineering of an ideal wound dressing,hydrogels have played a leading *** are 3D hydrophilic polymeric structures that can provide a protective barrier,mimic the native extracellular matrix(ECm),and provide a humid *** to their advantages,hydrogels(with different architectural,physical,mechanical,and biological properties)have been extensively explored as wound dressing *** we describe recent studies on hydrogels for wound healing applications with a strong focus on the interplay between the fabrication method used and the architectural,mechanical,and biological performance ***,we review different categories of additives which can enhance wound regeneration using 3D hydrogel *** engineering for wound healing applications promises the generation of smart solutions to solve this pressing problem,enabling key functionalities such as bacterial growth inhibition,enhanced re-epithelialization,vascularization,improved recovery of the tissue functionality,and overall,accelerated and effective wound healing.

关键词： Wound healing Wound dressing Hydrogel Tissue engineering 3D culture

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A Fragmentation mechanism of Homemade Explosive TmDD Using DART-mS and Isotopic Labeling

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火炸药学报 2018年第1期41卷 16-20,30页

作者： Alexander pedroza Zarate Fredy Colpas-Castillo Daniel J.Alcazar Franco Wilman A.Cabrera-Lafaurie Eduardo A.Espinosa-Fuentes Department of Chemistry Universidad de Cartagena Facultad de Ciencias Exactas Cartagena Colombia Department of Natural and Exact Science Corporación Universidad de la Costa (CUC) Barranquilla Colombia Department of Civil and Environmental Sciences Corporación Universidad de la Costa (CUC) Barranquilla Colombia

A fragmentation mechanism and characterization for the first time using Direct Analysis in Real Time- Time of Flight-mass Spectrometry(DART-TOF-mS)of the tetramethylene diperoxide dicarbamide(TmDD)compound were *** mS-spectrum may support other research about devices and detection in real *** mass spectrum of TmDD obtained using DART ionization in the positive-ion detection mode exhibited a strong peak at m/z254representing an ammonium adduct([TmmD·NH_4]~+).There was another peak at m/z237,which represented the protonated molecule([TmDD·H]~+)of *** two peaks corroborated the identity of the *** DART-mS spectra of the TmDD-isotopomer successfully corroborated the respective molecular tails. The principal fragmentation residues also showed coherence according to the number of isotopically labeled atoms on the TmDD *** contrast with other organic peroxides analyzed by this technique,TmDD exhibited substantial *** theoretical modeling results showed that the fragmentation mechanism of the TmDD ion adduct is strongly dependent of the TmDD ring flexibility and the hydrogen bonding formed between the nitrogen and oxygen atoms and the atmospheric proton.

关键词： direct analysis in real time Time of Flight-mass Spectrometry TmDD isotopomers

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Hepatitis C virus molecular evolution:Transmission,disease progression and antiviral therapy

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World Journal of Gastroenterology 2014年第43期20卷 15992-16013页

作者： maria Victoria Preciado Pamela Valva Alejandro Escobar-Gutierrez Paula Rahal Karina Ruiz-Tovar Lilian Yamasaki Carlos Vazquez-Chacon Armando martinez-Guarneros Juan Carlos Carpio-pedroza Salvador Fonseca-Coronado mayra Cruz-Rivera Laboratorio de Biología molecular División PatologíaHospital de Ni?os "Ricardo Gutiérrez"Buenos Aires C1425EFDArgentina Instituto de Diagnóstico y Referencia Epidemiológicos Mexico 01480Mexico Department of Biology Institute of BioscienceLanguage and Exact ScienceS?o Paulo State UniversityS?o José do Rio PretoSP 13560-970Brazil Laboratorio de Inmunobiología de Enfermedades Infecciosas Unidad de Investigación MultidisciplinariaFacultad de Estudios Superiores CuautitlánUniversidad Nacional Autónoma de MéxicoCuautitlán IzcalliEstado de México 54714Mexico Departmento de microbiología y Parasitología Facultad de MedicinaUniversidad Nacional Autónoma de MéxicoMexico City 04510Mexico

Hepatitis C virus(HCV)infection represents an important public health problem *** of HCV morbidity and mortality is a current challenge owned to several viral and host *** molecular evolution plays an important role in HCV transmission,disease progression and therapy *** high degree of genetic heterogeneity characteristic of HCV is a key element for the rapid adaptation of the intrahost viral population to different selection pressures(e.g.,host immune responses and antiviral therapy).HCV molecular evolution is shaped by different mechanisms including a high mutation rate,genetic bottlenecks,genetic drift,recombination,temporal variations and *** evolutionary processes constantly rearrange the composition of the HCV intrahost population in a staging *** advances in the understanding of the molecular mechanism controlling HCV replication have facilitated the development of a plethora of direct-acting antiviral agents against *** a result,superior sustained viral responses have been *** rapidly evolving field of anti-HCV therapy is expected to broad its landscape even further with newer,more potent antivirals,bringing us one step closer to the interferon-free era.

关键词： Hepatitis C virus Evolution Phylogenetics Drug resistance Clinical outcome

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