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石化译文 1996年第3期 21-25页

作者： stefa.,A 汪强

Review: Neuronal Differentiation Protocols of Mesenchymal Stem Cells

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Advances in Bioscience and Biotechnology 2022年第1期13卷 15-71页

作者： Miguel A. Jiménez-Acosta Lory Jhenifer Rochín Hernández Mayte Lizeth Padilla Cristerna José Tapia-Ramírez Marco A. Meraz-Ríos Department of Molecular Biomedicine Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional Instituto Politécnico Nacional México City México Department of Genetic and Molecular Biology Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional Instituto Politécnico Nacional México City México

Mesenchymal stem cells (MSCs) are self-renewing cells found in almost all postnatal organs and tissues in the perivascular region. These cells present multiple characteristics that make them candidates to be applied in cell therapy for neurodegenerative diseases, such as their secretory action, migration to the lesion area, and immunomodulatory potential. These cells have a high capacity for mesodermal differentiation;however, numerous studies have shown that MSCs can also differentiate into neurons. However, despite positive results in multiple trials in which undifferentiated MSCs transplanted into animal models of neurodegenerative diseases, some studies suggest that the therapeutic effects obtained are enhanced by the use of MSCs differentiated towards the neuronal lineage before transplant. In this sense, there are several methods to induce in vitro reprogramming of MSCs towards the neuronal lineage, including chemical substances, growth factors, cocultures with neural lineage cells, transfection of genes, miRNAs, etc., and small molecules stand out. Therefore, this article compares multiple experimental tests in which these inducers promote neuronal differentiation of MSCs and identify those methods that originate an optimal neuronal differentiation. The analysis includes the percentage of differentiation, maturation, expression of neuronal markers, functionality, and cell survival considering the intrinsic characteristics of the MSCs used as the tissue of origin and the species from which they were isolated.

关键词： Mesenchymal Stem Cells Transdifferentiating Neuronal Differentiation Small Molecules miRNA Neural Induction

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消除焦化瓶颈提高经济效益

南炼科技 1998年第3期5卷 62-66页

作者： stefa.,A 邱宏亚

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降低焦粉对延迟焦化装置的影响

南炼科技 1998年第2期5卷 44-47页

作者： stefa.,A 万武洋

Variations in the Patterns of Precipitation in the Watershed of the Ambato River Associated with the Eruptive Process of the Tungurahua Volcano in Ecuador

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Open Journal of Modern Hydrology 2015年第4期5卷 121-139页

作者： Iván Ríos García Abel Solera Universidad Nacional de Chimborazo Riobamba Ecuador Universidad Nacional de Chimborazo Riobamba Ecuador

The Tungurahua, located in the Cordillera de los Andes, is the volcano with the most eruptive activity in Ecuador nowadays. 1993 records the eruptive initial process and in August of 1999, after almost 80 years of rest, the volcano begins an explosive eruptive period. This research examines the effects of the eruptive process of the volcano in the patterns of change in precipitation in the short term in a hydrographic watershed. Their results are intended to contribute to the studies carried out to understand the weather and the factors influencing its variability at local and global level. It aims also to contribute with technical data in the debate about experimenting with artificial volcanoes to weather modification. The analysis demonstrates a process of redistribution of rainfall, with significant increases in rainfall from 42.25% on December, and significant decreases of 40.03% on September, during the presence of the eruptive process.

关键词： Volcanic Eruption Rainfall Variability Tungurahua

Determination of drug,excipients and coating distribution in pharmaceutical tablets using NIR-CI

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Journal of Pharmaceutical Analysis 2012年第2期2卷 90-97页

作者： Anna Palou Jordi Cruz Marcelo Blanco Jaume Tomàs Joaquín de los Ríos Manel Alcalà Unitat de Química Analítica Departament de QuímicaFacultat de CiènciesUniversitat Autònoma de Barcelona08193 BellaterraBarcelonaSpain Escola Universitària Salessiana de Sarrià Passeig Sant Joan Bosco7408017 BarcelonaSpain Esteve Farma c/Sant Martí s/n08197 MartorellesBarcelonaSpain

The growing interest of the pharmaceutical industry in Near Infrared-Chemical Imaging (NIR-CI) is a result of its high usefulness for quality control analyses of drugs throughout their production process (particularly of its non-destructive nature and expeditious data acquisition).In this work,the concentration and distribution of the major and minor components of pharmaceutical tablets are determined and the spatial distribution from the internal and external sides has been *** addition,the same NIR-CI allowed the coating thickness and its surface distribution to be *** were processed to extract the target data and calibration models constructed using the Partial Least Squares (PLS) *** concentrations of Active Pharmaceutical Ingredient (API) and excipients obtained for uncoated cores were essentially identical to the nominal values of the pharmaceutical *** the predictive ability of the calibration models applied to the coated tablets decreased as the coating thickness increased.

关键词： Near infrared Chemical Imaging (NIR-CI) Hyperspectral imaging Component distribution Tablet coating distribution Partial Least Squares (PLS) regression

Adsorption of cobalt by using inorganic components of sediment samples from water bodies

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International Journal of Sediment Research 2021年第4期36卷 524-531页

作者： Rocío Montes de Oca-Palma Marcos Solache-Ríos Melania Jiménez-Reyes José Juan García-Sánchez Perla Tatiana Almazán-Sánchez Instituto Nacional de Investigaciones Nucleares Departamento de Química Tecnológico de Estudios Superiores de Jocotitlán Cátedras CONACyT-Instituto Nacional de Investigaciones Nucleares

The adsorption of cobalt ions was evaluated using sediment samples from water bodies to investigate the adsorption properties of sediment and the behavior of these natural materials in the presence of nuclear and industrial waste. The two sediments(S1 and S2) were treated to eliminate humic and fulvic acids and then they were characterized by several techniques. The minerals found in both the sediments(X-ray diffraction) were quartz and albite; plus, goethite and muscovite in S1, and kaolinite and montmorillonite in S2. Point of zero charge(PZC) of S1 and S2 was 6.00 and 5.22, respectively. The specific area of S1(63.3 m2/g) is higher than S2(1.5 m2/g). Adsorption kinetics data for S1 and S2 were best fitted to the pseudo second-order model. The removal efficiency of S1 for cobalt was 96% with an adsorption capacity(qe) of 0.93 mg/g, and for S2 was 45% with a qeof 0.40 mg/g. The experimental data of the adsorption isotherms were adjusted to Langmuir and Freundlich models for S1 and S2, respectively. The thermodynamic parameters(enthalpy, entropy, and Gibb’s free energy) indicated that the adsorption processes were endothermic, spontaneous, and chemisorption mechanism. The results show that the adsorption capacities of the sediments depend on their composition. These water sediments have important adsorption properties for cobalt, and they can be used in the treatment of nuclear and industrial aqueous wastes.

关键词： Water-body sediment Cobalt ions Adsorption

Tropical tree community composition and diversity variation along a volcanic elevation gradient

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Journal of Mountain Science 2022年第12期19卷 3475-3486页

作者： Ruben MARTINEZ-CAMILO Manuel MARTINEZ-MELENDEZ Nayely MARTINEZ-MIELENDEZ Derio Antonio JIMENEZ-LOPEZ Mauricio JosE-RIos Unidad Villa Corzo Facultad de IngenieríaUniversidad de Ciencias y Artes de Chiapas30520 Villa CorzoChiapasMexico Instituto de Ciencias Biológicas Universidad de Ciencias y Artes de Chiapas29039 Tuxtla GutiérrezChiapasMexico Eizia A.C. 29045 Tuxtla GutiérrezChiapasMexico Departamento de Conservación de la Biodiversidad El Colegio de la Frontera Sur29290 San Cristóbal de las CasasChiapasMexico Orquidiario y Jardín Botánico de Comitán Secretaría de Medio Ambiente e Historia Natural30106 Comitán de DomínguezChiapasMexico Instituto de Investigación en Gestión de Riesgos y Cambio Climático Universidad de Ciencias y Artes de Chiapas29039 Tuxtla GutiérrezChiapasMexico

Unraveling the factors that determine variation of diversity in tropical mountain systems is a topic for debate in plant *** is especially true in areas where topography is complex due to volcano elevational gradients and where forests are vulnerable to human *** this study we used a set of climatic(temperature,rainfall,and radiation solar),topographic(elevation,slope aspect,and slope orientation)and human disturbance variables to determine their effect on diversity and composition patterns of a tree community,considering three slope aspects of a tropical volcano in southeastern *** sampled trees in seventy 0.1-ha plots distributed on three slope aspects of the Tacanávolcano along an elevational gradient of 1500 to 2500 *** determined diversity patterns(general tree richness,exponential of Shannon index,and pioneer species richness)with linear regression models,and for beta diversity,we used a dissimilarity index(within and between elevational bands 100 m wide).The effect of a set of environmental and human disturbance variables on tree diversity and community composition was analyzed with general linear models and multivariate analyses,*** registered 2,949 individual trees belonging to 176 species and *** average species richness and alpha diversity per plot were 13(standard deviation±6)and 9(±5),*** tree richness and alpha diversity increased in the middle part(unimodal patterns)of the elevational gradient,but pioneer species richness decreased linearly with *** variance explained by general linear models was greater in richness(32%)than in alpha diversity(25.3%).The most important predictor variables were temperature(elevational gradient),which explained the unimodal pattern(richness and alpha diversity increase at intermediate levels of temperature),and slope orientation,which explained the increase in richness and alpha diversity toward the geographic *** temperature had a signific

关键词： Composition Environmental gradient Tree diversity patterns Tropical humid cloud forest Tropical volcanoes

桑托斯将军城弗雷贝勒渔业公司人力资源部组织的员工培训和发展计划的效果

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桑托斯将军城弗雷贝勒渔业公司人力资源部组织的员工培训和发展计...

作者： Lordine Casta(?)os-Espia 福建师范大学

学位级别：硕士

作为菲律宾渔业的顶级公司之一,桑托斯将军市的弗雷贝尔渔业公司是一家为客户提供良好服务与维护安全措施的公司。鉴于这些要求,公司必须保持训练有素的人员,以有效地履行其作为公司的使命。人力资源部作为公司的骨干力量,在公司进行投... 详细信息

作为菲律宾渔业的顶级公司之一,桑托斯将军市的弗雷贝尔渔业公司是一家为客户提供良好服务与维护安全措施的公司。鉴于这些要求,公司必须保持训练有素的人员,以有效地履行其作为公司的使命。人力资源部作为公司的骨干力量,在公司进行投资的同时,开展了多项关于员工的发展计划,期望获得回报。这些方案的效果应该用适当的参数来衡量,同时也应该确定各种因素。在本研究的最后,研究者也希望能让人力资源与发展办公室了解他们为公司组织的培训对公司的影响。本研究旨在探讨桑托斯将军市的佛雷贝尔渔业公司人力资源部组织员工发展计划之成效。本研究采用定性研究设计,因为它被认为是最合理的。然后,通过主题数据分析来支持它提取到的所需信息。参与者仅限于目前在公司工作的陆上雇员,无论其职位,服务年限或就业状况如何。在被邀请参与研究的31名员工中,19名员工高兴地表达了他们的意见,这些意见是本研究得出结论的依据。主题是根据对收集到的数据进行专题分析而制定的。主题分为三个主要部分,回答了本研究的三个主要研究问题。主题分析的结果显示,效果、自我提升、对公司的忠诚度等是有利于员工和公司获得的知识的关键参数,更多的技术培训、一致性和培训都被认为是对员工和公司都是有益的。通过对理论和策略的讨论,深入理解员工培训和发展的原则,有助于分析本研究的重要发现,并有助于将与本研究主题(桑托斯将军市的弗雷贝尔渔业公司总公司)相关的某些现象联系起来。考虑到这项研究的结果,主体公司桑托斯将军市的弗雷贝尔渔业公司总公司(Frabelle Fishing Corporation-General Santos City)就员工培训和发展计划提出了建议。通过这些建议,公司可以更好的通过人力资源和发展办公室了解对员工的培训和结果。

关键词：培训和发展人力资源效果员工弗雷贝尔渔业公司

ELECTRIC UTILITY'S SOCIAL SUSTAINABILITY SUPPORT USING RENEWABLE ENERGY IN ISOLATED COMMUNITIES

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ELECTRIC UTILITY'S SOCIAL SUSTAINABILITY SUPPORT USING RENEW...