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Deciphering the fiber quality of Gossypium barbadense L. var. brasiliensis in La Convención, Cusco, Perú

Journal of Cotton Research 2024年第03期 231-242页

作者： MORALES-ARANIBAR Luis SáENZ manuel Canto MORALES-ARANIBAR Carlos Genaro RIVERA Marite Yulisa Nieves AGUILERA Jorge González STEINER Fábio BARDIVIESSO Diógenes Martins ZUFFO Alan Mario National Intercultural University of Quillabamba Universidad Nacional Agraria La Molina(UNALM) Graduate School Jorge Basadre Grohmann National University National Institute of Agrarian Innovation(INIA) Department of Agronomy State University of Mato Grosso do Sul(UEMS) Department of Agronomy State University of Maranh?o(UEMA)

Background The quality of cotton fiber determines its value in the textile market, influencing agricultural profitability and the efficiency of textile processing. The selection of genotypes with superior fibers is a key factor for genetic improvement programs seeking adaptability and sustainability in the face of climate change. This demonstrates the strategic importance of this plant for sustainable agriculture and the global textile industry. The objective of this research was to decipher the fiber quality of Gossypium barbadense var. brasiliensis in the native Amazonian communities of La Convención, Cusco-Perú, and to evaluate other critical aspects of native cotton that have not yet been identified. The methodology included non-probability sampling for accessibility, qualitative and quantitative analyses, and multivariate analyses. The fiber length(mm), micronaire index(maturity/fineness), fiber strength(gf/tex), length uniformity index(%), fiber elongation(%), maturation index(%), and short fiber index(%) were the fiber characteristics evaluated using the HVI method in cotton *** Cotton accessions collected from Koribeni(Gossypium spp.) and Shivankoreni(Gossypium barbadense var. brasiliensis) stood out for their fiber quality properties, especially length, strength, and uniformity, which highlights their relevance for advanced textile applications and potential for use in plant genetic improvement *** These findings reinforce the need to conserve and study these native cotton accessions from the Peruvian Amazon region, which can offer promising perspectives for the textile industry and agricultural biodiversity.

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A Review of the Production Cycle of Titanium Dioxide Pigment

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Materials Sciences and Applications 2014年第7期5卷 441-458页

作者： manuel Jesús Gázquez Juan Pedro Bolívar Rafael Garcia-Tenorio Federico Vaca Departamento de Física Aplicada Universidad de HuelvaHuelvaEspana Departamento de Química Proyecto PrometeoUniversidad Técnicas Particular de Loja(UTPL)LojaEcuador Departamento de Física Aplicada II Universidad de SevillaSevillaEspaña

Titanium is a very important element for several industrial applications, being one of the ninth most abundant elements in the Earth’s crust (0.63% wt). In this work it will discuss the different mining and industrial activities involved in the production of titanium dioxide. The first step analyzed will treat about the beneficiation mining process of titanium mineral, and secondly, it will discuss the two main processes of the TiO2 manufacturing (sulphate and chloride routes). In addition, we will show different uses of the titanium dioxide pigment as filler in paper, plastics and rubber industries and as flux in glass manufacture, etc. Finally, we will show that the old wastes are currently called co-products since they were valorized, being commercialized by the Spanish industry of TiO2 production in different fields such as agriculture, civil engineering, or cement manufacturing.

关键词： Titanium Minerals Titanium Dioxide Pigment Properties and Uses of Tio2 Valorization of Co-Products

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High-definition optical magnification with digital chromoendoscopy detects gastric mucosal changes in dyspeptic-patients

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World Journal of Gastrointestinal Endoscopy 2020年第1期12卷 23-32页

作者： Carlos Robles-Medranda manuel Valero Miguel Puga-Tejada Roberto Oleas Jorge Baquerizo-Burgos Miguel Soria-Alcívar Haydee Alvarado-Escobar Hannah Pitanga-Lukashok Gastroenterology and Endoscopy Division Instituto Ecuatoriano de Enfermedades Digestivas(IECED)

BACKGROUND Accurate detection of gastric infection by Helicobacter pylori(***)and premalignant lesions are important for effective provision of treatment,preventing the development of gastric *** enhancement systems with optical magnification improved the identification of mucosal superficial and vascular patterns in patients with *** To evaluate an optical enhancement system with high-definition magnification,for diagnosis of normal gastric mucosa,***-associated gastritis,and gastric *** A cross-sectional,nonrandomized study from November 2015 to April 2016 performed in a single-tertiary academic center from ***-two consecutive patients with functional dyspepsia according to the Rome III criteria,were tested for *** using a stool antigen test and were assigned to an Hp+group or an Hp−control *** with highdefinition optical magnification and digital chromoendoscopy was performed,and patients were classified into 4 groups,in accordance to the microvasculararchitecture pattern of the *** and intraobserver agreement among operators were *** Of the 72 participants,35 were Hp+and 37 were Hp−.Among 10 patients with normal mucosal histology in biopsy samples,90%had a Type I pattern of microvascular architecture by *** participants with type IIa and type IIb patterns,significantly more were Hp+than Hp−(32 vs 8),and most(31 out of 40)had histological diagnoses of chronic active *** of the three participants with a histological diagnosis of atrophy had a type III microvascular *** type I pattern predicted normal mucosa,type IIa–IIb predicted *** infection,and type III predicted atrophy with sensitivities of 90.0%,91.4%,and 66.7%,*** intraobserver and interobserver agreements had kappa values of 0.91 and 0.89,*** High-definition optical magnification with digital chromoendoscopy is useful

关键词： Gastritis Helicobacter pylori Gastric mucosa Atrophic Endoscopy Digestive system

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Portal hypertensive biliopathy: A single center experience and literature review

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World Journal of Hepatology 2013年第3期5卷 137-144页

作者： Vanessa Suárez Andrés Puerta Luisa Fernanda Santos Juan manuel Pérez Adriana varón Rafael Claudino Botero Gastroenterology and Hepatology Service Department of Internal Medicine Fundación Cardioinfantil Department of Diagnostic Imaging Fundación Cardioinfantil

Portal hypertensive biliopathy (PHB) is characterized by anatomical and functional abnormalities of the intrahepatic, extrahepatic and pancreatic ducts, in patients with portal hypertension associated to extrahepatic portal vein obstruction and less frequently to cirrhosis. These morphological changes, consisting in dilatation and stenosis of the biliary tree, are due to extensive venous collaterals occurring in an attempt to decompress the portal venous blockage. It is usually asymptomatic until it progresses to more advanced stages with cholestasis, jaundice, biliary sludge, gallstones, cholangitis and finally biliary cirrhosis. Imaging mo-dalities of the biliary tree such as Doppler ultrasound, computed tomography, magnetic resonance cholangiopancreatography and endoscopic retrograde cholangiopancreatography are essential to establish the diagnosis and the need of therapeutical interventions. Once the diagnosis is established, treatment with ursodesoxycholic acid seems to be beneficial. Decompression of the biliary tree to dilate, remove stones or implant biliary prosthesis by endoscopic or surgical procedures (hepato-yeyunostomy) usually resolves the cholestatic picture and prevents septic complications. The ideal treatment is the decompression of the portal system, with transjugular intrahepatic porto-systemic shunt or a surgical porto-systemic shunt. Unfortunately, few patients will be candidates for these procedures due to the extension of the thrombotic process. The purpose of this paper is to report the first 3 cases of PHB seen in a Colombian center and to review the literature.

关键词： Bile duct diseases Biliary obstruction Banti’s syndrome Cholestasis in children Portal vein obstruction Interventional endoscopy

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Artificial Triterpenoid Fatty Acid Ester Isolated From the Leaves of Phytolacca icosandra L

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Natural Products and Bioprospecting 2020年第4期10卷 221-225页

作者： Elier Galarraga Andersson Mavares Neudo Urdaneta Rafael ERodríguez-Lugo Juan manuel Amaro-Luis Departamento de Química.Edificio de Química Y Procesos Universidad Simón Bolívar(USB)Apartado 89000.Caracas-1080AVenezuelaUSA Laboratorio de Química Bioinorgánica Centro de QuímicaInstituto Venezolano de Investigaciones Científicas(IVIC)VenezuelaCaracas 1020-AUSA Laboratorio de Productos Naturales Departamento de Química.Facultad de CienciasUniversidad de Los Andes(ULA)MéridaVenezuela-5101USA

The methanol extract form the leaves of Phytolacca icosandra L.,afforded the unprecedented artificial triterpenoid fatty acid ester 1 derived from the new natural triterpenoid phytolaccagenic acid 3-O-myristate(1a),along with the three known triterpenoids serjanic,acinosolic and phytolaccagenic acid(2-4).Their structures were stablished by HR-EI-MS,1D and 2D NMR *** possible mechanistic formation of 1 is proposed,and the in vitro toxicity of all compounds was assessed using the brine shrimp lethality assay(BSLA).

关键词： Phytolacca icosandra.triterpenoid fatty acid ester NMR artificial products BSLA

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Alzheimer’s disease and type 2 diabetes mellitus:Pathophysiologic and pharmacotherapeutics links

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World Journal of Diabetes 2021年第6期12卷 745-766页

作者： Milagros Rojas Mervin Chávez-Castillo Jordan Bautista Ángel Ortega manuel Nava Juan Salazar Edgar Díaz-Camargo Oscar Medina Joselyn Rojas-Quintero Valmore Bermúdez Endocrine and Metabolic Diseases Research Center School of MedicineUniversity of ZuliaMaracaibo 4004Venezuela Universidad Simón Bolívar Facultad de Ciencias Jurídicas y SocialesCúcuta 540006Colombia Pulmonary and Critical Care Medicine Department Brigham and Women's HospitalHarvard Medical SchoolBostonMA 02155United States Universidad Simón Bolívar Facultad de Ciencias de la SaludBarranquilla 080001Colombia

At present,Alzheimer’s disease(AD)and type 2 diabetes mellitus(T2DM)are two highly prevalent disorders worldwide,especially among elderly individuals.T2DM appears to be associated with cognitive dysfunction,with a higher risk of developing neurocognitive disorders,including *** diseases have been observed to share various pathophysiological mechanisms,including alterations in insulin signaling,defects in glucose transporters(GLUTs),and mitochondrial dysfunctions in the ***,the aim of this review is to summarize the current knowledge regarding the molecular mechanisms implicated in the association of these pathologies as well as recent therapeutic *** this context,the hyperphosphorylation of tau and the formation of neurofibrillary tangles have been associated with the dysfunction of the phosphatidylinositol 3-kinase and mitogen-activated protein kinase pathways in the nervous tissues as well as the decrease in the expression of GLUT-1 and GLUT-3 in the different areas of the brain,increase in reactive oxygen species,and production of mitochondrial alterations that occur in *** findings have contributed to the implementation of overlapping pharmacological interventions based on the use of insulin and antidiabetic drugs,or,more recently,azeliragon,amylin,among others,which have shown possible beneficial effects in diabetic patients diagnosed with AD.

关键词： Alzheimer’s disease Type 2 diabetes mellitus Oxidative stress Islet amyloid polypeptide Glucagon-like peptide 1 Cognitive dysfunction Hypoglycemic agents

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Simulation, Power Quality Analysis and Improvements in a Hot Rolling Mill Using a STATCOM

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Journal of Energy and Power Engineering 2014年第9期8卷 1633-1641页

作者： Pablo Ardura Gonzalo Alonso Jose manuel Cano Joaquin Gonzalez Nomiella Francisco Pedrayes Femando Briz Manes Fernandez Cabanas manuel Garcia Melero Carlos Hiram Rojas Jose Ramon Gonzadez Suaxez Electrical Engineering Department University ofOviedo Gijon 33204 Spain Global Research & Development Department Arcelor Mittal Aviles 33400 Spain

This paper presents an analysis of the electric power flows in a hot rolling mill plant using a power quality analyzer and developing simulation models with Matlab-Simulink. The model inputs have been taken from process data by the process computer of the plant. Data from different rolling campaigns have been analysed. A STATCOM （static synchronous compensator） with a control strategy based on voltage oriented control with d-q coordinates is used as solution to improve the reactive compensation as well as to minimize the voltage fluctuations and sags effect. The overall electric model has been simulated with the STATCOM to check the improvement in the voltage stability and the consumption.

关键词： Cycloconverter d-q reference frame hot rolling mill STATCOM SVC (static var compensator) VOC (voltage orientedcontrol) voltage sag.

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短期国际资本流动对中国证券市场波动的影响研究

短期国际资本流动对中国证券市场波动的影响研究

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作者：刘李嘉诚（manuel Liu）上海交通大学

学位级别：硕士

改革开放以来中国经济持续高速发展,证券市场也取得了长足进步。作为经济状况的“晴雨表”,证券市场不仅在提高市场资源配置效率、支持实体经济发展上有着举足轻重的作用,而且对中国未来的发展战略也起到了承上启下的作用,例如人民币的... 详细信息

改革开放以来中国经济持续高速发展,证券市场也取得了长足进步。作为经济状况的“晴雨表”,证券市场不仅在提高市场资源配置效率、支持实体经济发展上有着举足轻重的作用,而且对中国未来的发展战略也起到了承上启下的作用,例如人民币的国际化、产业转型升级等等,因此中国证券市场的国际化是发展的必由之路。然而历史上新兴国家或地区的金融市场开放,往往伴随着难以避免的金融危机,通过案例研究可以发现,短期国际资本的流动是造成这些新兴国家金融市场波动的主要因素。因此中国在进行金融领域开放的过程中,同样会受到短期国际资本流动带来的冲击以及负面影响。针对中国证券市场波动性受短期国际资本流动影响的程度问题,本文运用了var模型进行了实证分析,选取指标为:市场指数波动率、人民币汇率、国内外利差和M2。由于当前中国证券市场整体开放水平较低,如果单独分析短期国际资本流动对整个A股市场波动性的影响,那么意义并不大。因此,为了更加直观的研究当前短期国际资本对中国证券市场的影响水平和当前边际变化的趋势,笔者将中国证券市场划分为了四个不同的层次,一层一层剖析了在不同渠道下,短期国际资本流动对中国证券市场波动性的影响程度。通过实证分析,本文发现短期国际资本对中国的证券市场的波动性已经开始产生影响,影响能力自下而上逐渐减弱,越细分的市场影响越强。且随着中国证券市场的不断放开,长远来看,短期国际资本对中国证券市场波动性的影响越来越大是可以确定的。自2018年以来金融领域的持续开放已经给中国证券市场的波动性带来明显的边际变化,后续中国政府还将持续拓宽外资进入中国的渠道,所以对整个中国A股市场波动的影响力也会越来越强,对此中国政府应总结历史上新兴国家金融市场开放中遭受金融危机的经验教训,在把控短期国际资本流动对证券市场波动性的影响、和完善政策监管制度上重点展开工作。

关键词：证券市场开放短期国际资本流动金融风险控制政策监管

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Study of Functionalized Gold Nanoparticles with Anti-gp63 IgG Antibody for the Detection of Glycoprotein gp63 in Membrane Surface of <i>Leishmania</i>Genus Parasites

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American Journal of Analytical Chemistry 2013年第7期4卷 100-108页

作者： Pedro Rodríguez Humberto Rojas Miguel Medina Jazzmin Arrivillaga Yosue Francisco Fracehuli Dager Vincent Piscitelli manuel Caetano Alberto Fernández Jimmy Castillo Centro de Microscopia Electrónica Facultad de Ciencias Universidad Central de Venezuela Caracas Venezuela Departamento de Biología Universidad Simón Bolívar Caracas Venezuela Escuela de Biología Facultad de Ciencias Universidad Central de Venezuela Caracas Venezuela Laboratorio de Espectroscopia Laser Facultad de Ciencias Universidad Central de Venezuela Caracas Venezuela

In this work we present the preparation and functionalization of gold nanoparticles (AuNPs) for the detection of presence of gp63 glycoprotein in the surface of Leishmania genus parasites. AuNPs were prepared by induced laser ablation in a clean and biologically suitable media. The nanoparticles were functionalized with anti-gp63 lgG antibody in order to study the interaction with the glycoprotein component gp63 (63 kDa) present on the membrane surface of Leishmania genus parasites. The functionalized AuNPs showed potential as a spectrometric indicator of the parasite existence, both by the detection of the presence of the gp63 in solution and through the specific interaction with the parasites in vitro. The specificity of the study opens a new line of research on the use of modified nanoparticles in the development of a fast and easy assay for Leishmaniosis diagnostics.

关键词： Leishmania Nanoparticles Surface Plasmon Resonance gp63 Protein

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英格兰和西班牙地方政府的财政可持续性:一项比较实证研究

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国际行政科学评论（中文版） 2021年第1期 85-104页

作者：曼努埃尔·佩德罗·罗德里格斯·玻利瓦尔玛丽亚·德塞达·洛佩兹·苏比雷斯劳拉·阿尔凯德·穆尼奥斯安德烈·纳瓦罗·加莱拉王欣红(译) 熊缨(审校) 西班牙格拉纳达大学对外经济贸易大学英语学院翻译系不详

近年来,地方政府财政可持续性被看作是确保向未来数代持续提供公共服务的一个关键概念。虽然许多欧洲国家实施了种种计划来提升财政可持续性,但是各个地方政府各具不同行政管理传统,实施的改革产生了不同结果。本研究采用比较法,识别在... 详细信息

近年来,地方政府财政可持续性被看作是确保向未来数代持续提供公共服务的一个关键概念。虽然许多欧洲国家实施了种种计划来提升财政可持续性,但是各个地方政府各具不同行政管理传统,实施的改革产生了不同结果。本研究采用比较法,识别在英格兰和西班牙可能会影响地方政府财政可持续性的机制、宏观和微观因素,以便确定并解释地方政府提供公共服务的财政可持续性的推动以及风险因素的异同。

关键词：财政可持续性代际平等地方政府

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