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Stress tensors and quantification of fracture patterns to analyze connectivity and potential fluid flow in a mesa landform of the Northern Andes

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Journal of mountain Science 2024年第1期21卷 271-291页

作者： GARCÍA-ARIAS Sergio VELANDIA Francisco ALVAREZ Angélica SANABRIA-GÓmEZ JoséD tarazona Yessenia VARGAS maría Camila Escuela de Geología Universidad Industrial de SantanderCra.27 Calle 9BucaramangaColombia Escuela de Física Universidad Industrial de SantanderCra.27 Calle 9BucaramangaColombia

This work applies stress tensors inversions and quantification of fracture patterns along the mesa de Los Santos, in the Eastern Cordillera of Colombia, to better understand the potential fluid flow. It thus contributes to the conceptual hydrogeological model. The area was subdivided into three blocks, separated by the NW Potreros and the Los Santos faults, having minor inner faults of different orientations. This separation facilitates the analysis of the fractures measured in the field, which in general show high dip angles and a conjugate geometry in the northern block, tension fractures(mode I) in the central block, and a random distribution in the southwestern block. WinTensor treatment of slickensides yielded a maximum horizontal stress(SHmax) of 111o, which coincides with the WNW-ESE tensor observed from the conjugate and tension joints. We then used Frac Pa Q to generate interpolation maps of fracture intensity and density. The maps show the highest values in the central block and the lowest in the northern block,where the precipitation is higher, causing intensive rock weathering and homogenization of the fracture planes. Although the highest values of connectivity by line are found to the south of the mesa, we suggest the possibility of greater flow from the recharge zone(NE) along bedding planes and open NW-SE fractures.

关键词： mesa de Los Santos Colombia Win-Tensor FracPaQ Strike-slip faults Fractured aquifers

Study on mechanism of mercury oxidation by fly ash from coal combustion

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Chinese Science Bulletin 2010年第2期55卷 163-167页

作者： ZHAO YongChun ZHANG JunYing LIU Jing DIAZ-SOmOANO mercedes martInez-tarazona m. rosa ZHENG ChuGuang State Key Laboratory of Coal Combustion Huazhong University of Science & Technology Wuhan 430074 China Instituto Nacional del Carbon ( CSIC) Francisco Pintado Fe 26 33011 Oviedo Spain

To understand the interaction of fly ash and mercury, systematic experiments on mercury oxidation in single flue gas composition are conducted on a fixed bed reactor system, the desorption rate and speciation of mercury are valuated. The results indicate that fly ash itself can significantly promote elemental mercury oxidation. A classification of fly ash activated sites is developed according to the speciation of mercury during adsorption-desorption tests, the reaction mechanism of mercury oxidation by fly ash is proposed. Acid gas can promote mercury oxidation and improve the stability of oxidation product. Lattice oxygen is an important oxidant of mercury oxidation.

关键词：氧化机制粉煤灰煤炭燃烧汞反应器系统氧化反应机理相互作用烟气成分

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燃煤飞灰氧化汞的机制研究

科学通报 2009年第21期54卷 3395-3399页

作者：赵永椿张军营刘晶 mercedes Diaz-Somoano m.rosa martinez-tarazona 郑楚光华中科技大学煤燃烧国家重点实验室武汉430074 Instituto Nacional del Carbon(CSIC) Francisco Pintado Fe 2633011OviedoSpain

为深入揭示飞灰与汞的作用机制,采用固定床汞吸附脱附实验系统详细研究了飞灰对汞的吸附氧化作用,尤其是单一气氛下飞灰本身对汞的吸附氧化性能,评价了飞灰中汞的脱附和析出形态,结果表明:飞灰自身对汞有明显的氧化作用,依据飞灰吸附脱... 详细信息

为深入揭示飞灰与汞的作用机制,采用固定床汞吸附脱附实验系统详细研究了飞灰对汞的吸附氧化作用,尤其是单一气氛下飞灰本身对汞的吸附氧化性能,评价了飞灰中汞的脱附和析出形态,结果表明:飞灰自身对汞有明显的氧化作用,依据飞灰吸附脱附汞形态差异,构建了飞灰与汞作用活性点的分类,提出了3种飞灰氧化汞的反应机制;酸性气体对促进汞氧化、提高飞灰与汞的作用产物的稳定性有重要意义;晶格氧是飞灰氧化汞的重要氧化剂.

关键词：汞飞灰氧化吸附脱附烟气

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燃煤飞灰吸附脱汞能力的实验研究

中国科学：技术科学 2010年第4期40卷 385-391页

作者：赵永椿张军营刘晶 DíAZ-SOmOANO mercedes ABAD-VALLE Patricia martínez-tarazona m.rosa 郑楚光华中科技大学煤燃烧国家重点实验室 Instituto Nacional del Carbón(CSIC) Francisco Pintado Fe2633011OviedoSpain

运用煤岩学分类相关理论对燃煤飞灰岩相组成进行了系统定量分析,并采用固定床汞吸附反应系统对不同电厂飞灰吸附汞的能力进行了详细研究,结果表明:不同的飞灰对汞均有一定的吸附能力,其中以烟煤飞灰CTSR和CTL的富碳组分对汞的吸附能力最... 详细信息

运用煤岩学分类相关理论对燃煤飞灰岩相组成进行了系统定量分析,并采用固定床汞吸附反应系统对不同电厂飞灰吸附汞的能力进行了详细研究,结果表明:不同的飞灰对汞均有一定的吸附能力,其中以烟煤飞灰CTSR和CTL的富碳组分对汞的吸附能力最强,其吸附能力分别为10.3和9.36μg/g,与商业活性炭捕获能力相当;飞灰中汞的含量与其含炭量和比表面积并无明显的相关性.揭示了飞灰颗粒岩相组成,分析了飞灰脱汞能力的影响因素.不同飞灰碳颗粒类型脱汞性能差异明显,各向异性碳颗粒尤其是多孔网状结构碳含量是决定飞灰脱汞能力的主要因素.

关键词：汞飞灰未燃碳岩相组成吸附

Electronic Tongue and Neural Networks, Biologically Inspired Systems Applied to Classifying Coffee Samples

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American Journal of Analytical Chemistry 2014年第4期5卷 266-274页

作者： álvaro A. Arrieta Almario rosa L. tarazona Cáceres Grupo de Investigación DANm/Desarrollo y Aplicación de Nuevos materiales Universidad Pontificia Bolivariana Montería Colombia Grupo de Investigación GIE Universidad Pontificia Bolivariana Montería Córdoba

In this paper, the possibility to use an electronic tongue based on a polypyrrole sensor array in classifying coffee samples has been studied. Each sensor shows a distinguished electrochemical response when exposed to the studied solutions, providing signals with a high degree of cross-selectivity. The sensor array electrochemical response is related to the interaction of the ionic and non-ionic solution compounds and to the surface of the sensors polymeric matrix. Furthermore, the electronic tongue was used to perform an analysis on coffee samples. In this case, each sensor showed a particular response to each coffee sample. Data obtained from the registered signals were used to perform a discrimination of the samples. The analysis with neural networks of the principal components (NNPC) done on the electronic tongue response to five types of commercial coffee, allows to achieve a clear differentiation of samples.

关键词： Electronic Tongue Coffee Electrochemical Sensors

Hot-wire chemical vapor deposition low-loss hydrogenated amorphous silicon waveguides for silicon photonic devices

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Photonics Research 2019年第2期7卷 193-200页

作者： SWE Z.OO ANTULIO tarazona ALI Z.KHOKHAR RAFIDAH PETRA YOHANN FRANZ GORAN Z.mASHANOVICH GRAHAm T.REED ANNA C.PEACOCK HAROLD m.H.CHONG School of Electronics and Computer Science University of Southampton Optoelectronics Research Centre University of Southampton School of Electrical and Electronic Engineering Nanyang Technological University

We demonstrate low-loss hydrogenated amorphous silicon(a-Si:H) waveguides by hot-wire chemical vapor deposition(HWCVD). The effect of hydrogenation in a-Si at different deposition temperatures has been investigated and analyzed by Raman spectroscopy. We obtained an optical quality a-Si:H waveguide deposited at 230°C that has a strong Raman peak shift at 480 cm^(-1), peak width(full width at half-maximum) of 68.9 cm^(-1), and bond angle deviation of 8.98°. Optical transmission measurement shows a low propagation loss of 0.8 dB/cm at the1550 nm wavelength, which is the first, to our knowledge, report for a HWCVD a-Si:H waveguide.

关键词： Hot-wire low-loss amorphous

Detection of dengue virus serotype 3 in Cajamarca,Peru:molecular diagnosis and clinical characteristics

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Asian Pacific Journal of Tropical medicine 2021年第10期14卷 456-462页

作者： miguel Angel Aguilar-Luis Hugo Carrillo-Ng Sungmin Kym Wilmer Silva-Caso Eduardo Verne Luis J.del Valle Jorge Bazán-mayra Victor Zavaleta-Gavidia Daniel Cornejo-Pacherres Yordi tarazona-Castro Ronald Aquino-Ortega Angela Cornejo-Tapia Juana del Valle-mendoza School of medicine Research and Innovation Center of the Faculty of Health SciencesUniversidad Peruana de Ciencias AplicadasLimaPeru Laboratorio de Biologia molecular Instituto de Investigación NutricionalLimaPeru Facultad de medicina Alberto Hurtado Universidad Peruana Cayetano HerediaLimaPeru Division of Infectious Diseases Department of Internal MedicineChungnam National University School of MedicineDaejeonRepublic of Korea Barcelona Research Center for multiscale Science and Engineering Departament d'Enginyeria QuímicaEEBEUniversitat Politècnica de Catalunya(UPC)BarcelonaSpain Laboratorio Regional de Cajamarca Dirección Regional de Salud de Cajamarca(DIRESA)CajamarcaPeru

Objective:To describe and molecularly characterize an outbreak of dengue virus(DENV)infection in Cajamarca,an Andean region in ***:A total of 359 serum samples from patients with acute febrile illness were assessed for the presence of DENV via RT-PCR,ELISA NS1,Ig m and Ig G in Cajamarca,Peru from January 2017 to June *** evaluation of the different diagnostic tests and their applicability was ***:Dengue virus was detected in 24.7%of samples by ***,serological analysis detected 30.3%positive cases via ELISA NS1 antigen,16.7%via ELISA Ig G and 9.7%via ELISA Ig *** of the cases corresponded to DENV-3(77.5%).The use of RT-PCR performed better in primary infections(Pm performed better in secondary infections(Pmbination of NS1 and Ig m performed better than the other assays in detecting primary(92.5%)and secondary infections(96.6%).The most frequent symptoms associated with fever were headaches,myalgias,and arthralgias across all ***:We report an important outbreak of dengue infection caused by DENV-3 in Cajamarca,*** findings encourage the use of NS1 antigen and Ig m *** findings demonstrate an increasing expansion of DENV-3 in Peru and highlight the importance of molecular diagnosis and serotype characterization among the clinically defined dengue cases to strengthen the Peruvian epidemiological surveillance.

关键词： Dengue DENV Arbovirus Diagnosis Peru

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“二元性”战略的动态平衡

企业管理 2019年第4期 119-121页

作者：麦孟达中国人民大学商学院

组织的"二元性"在管理学研究中是一个著名概念,但在实践界却鲜为人知。文章通过苹果公司的实例,让企业管理者通俗地认识"二元性",了解如何运用。探讨创新与"二元性"之间的关系,并在"探索"和"利用"之间取得动态平衡,给实践中的管理者以... 详细信息

组织的"二元性"在管理学研究中是一个著名概念,但在实践界却鲜为人知。文章通过苹果公司的实例,让企业管理者通俗地认识"二元性",了解如何运用。探讨创新与"二元性"之间的关系,并在"探索"和"利用"之间取得动态平衡,给实践中的管理者以启发。

关键词：二元性企业创新动态平衡

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中医药治疗腺体肥大临床研究进展

陕西中医 2021年第7期42卷 974-976页

作者：赵娜高爽李桂华刘书芹刘新明杜津莉王金贵 [哥伦比亚]Henry tarazona medina 天津中医药大学第一附属医院国家中医针灸临床医学研究中心天津300193

腺样体肥大可导致上呼吸道受阻,出现打鼾、张口呼吸、缺氧等症状,严重影响患儿的生长发育及心理健康,现代医学多采用手术切除,患儿及家长接受度差。中医药治疗该病疗效显著,包括中药内服及中医外治法治疗,本文综合分析了近年来中医药治... 详细信息

腺样体肥大可导致上呼吸道受阻,出现打鼾、张口呼吸、缺氧等症状,严重影响患儿的生长发育及心理健康,现代医学多采用手术切除,患儿及家长接受度差。中医药治疗该病疗效显著,包括中药内服及中医外治法治疗,本文综合分析了近年来中医药治疗小儿腺样体肥大的临床研究进展,分为三个方面进行了归纳总结:中药内治疗法,其中又包括了分期论治、辨证加减、验方施治等不同观点,中医特色外治疗法,包括中药外用、小儿推拿、艾灸等;中西医结合方案。

关键词：腺样体肥大中药推拿艾灸儿童