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On the Reliability (Remagnetization?) of Paleomagnetic Poles Obtained from Permo-Silurian Rocks from Oaxaca Mexico, Belize and Guatemala: Insights from Rock Magnetic Studies

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Open Journal of Geology 2012年第2期2卷 48-56页

作者： jose C. Guerrero-garcia Emilio Herrero-Bervera Instituto de Geologia UNAM Ciudad Universitaria Mexico City Mexico Paleomagnetics and Petrofabrics Laboratory SOEST-Hawaii Institute of Geophysics and Planetology University of Hawaii at Manoa Hawaii USA

In the reconstruction of past movements of tectonic plates, the determination of reliable paleomagnetic poles is of utmost importance. To achieve accurate results, a full knowledge of the rock magnetic properties of the samples is required particularly for Curie point, for grain-size analyses in addition to thermal and alternating field (a.f.) demagnetization experiments. We present the comparative results of 20 sites drilled at 3 different Paleozoic areas: The Permian rocks of the Juchatengo area in Oaxaca, Mexico;the Late Silurian (~418 Ma) Mountain Pine Ridge Granite, the Hummingbird Granite in Belize, and the Early Leonardian Chochal Limestone in Guatemala. The samples of all 20 sites were subjected to a.f. and thermal demagnetization in 16 steps from NRM to 100 mT, the thermally demagnetized samples were cleaned in 15 increasing temperature steps from NRM up to 675℃. Principal component analysis was applied to the samples in order to obtain their respective mean directions. Saturation Isothermal Remanent Magnetization (SIRM), hysteresis loops, and coercivity experiments performed indicate that about 90% of the samples were characterized by Multi-Domain (MD) grain sizes and the rest were in the Pseudo-Single Domain (PSD) range of the Day diagram. Curie point determinations results ranged from 190℃ to 660℃, indicating the presence of titanomagnetites as well as hematite. In the Juchatengo area reliable poles were obtained from 3 sites, in Belize 3 sites and only 2 sites of the Permian Chochal Formation, Guatemala yielded coherent and useful results. All the “reliable” paleopoles obtained do not agree with the APWP of North America.

关键词： Paleomagnetism Remagnetization Granites Dike Limestones

Risk factors and classifications of hilar cholangiocarcinoma

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World Journal of Gastrointestinal Oncology 2013年第7期5卷 132-138页

作者： Miguel Angel Suarez-Munoz jose Luis Fernandez-Aguilar Belinda Sanchez-Perez jose Antonio Perez-Daga Beatriz garcia-Albiach Ysabel Pulido-Roa Naiara Marin-Camero Julio Santoyo-Santoyo General Digestive and Transplantation Surgery Service HPB and Liver Transplant UnitUniversity Hospital Carlos Haya29010 MalagaSpain

Cholangiocarcinoma is the second most common primary malignant tumor of the *** cholangiocarcinoma or Klatskin tumor represents more than 50% of all biliary tract cholangiocarcinomas.A wide range of risk factors have been identified among patients with Perihilar cholangiocarcinoma including advanced age,male gender,primary sclerosing cholangitis,choledochal cysts,cholelithiasis,cholecystitis,parasitic infection(Opisthorchis viverrini and Clonorchis sinensis),inflammatory bowel disease,alcoholic cirrhosis,nonalcoholic cirrhosis,chronic pancreatitis and metabolic *** classifications have been used to describe the pathologic and radiologic appearance of *** three systems most commonly used to evaluate Perihilar cholangiocarcinoma are the Bismuth-Corlette(BC) system,the Memorial Sloan-Kettering Cancer Center and the TNM *** BC classification provides preoperative assessment of local *** Memorial Sloan-Kettering cancer center proposes a staging system according to three factors related to local tumor extent:the location and extent of bile duct involvement,the presence or absence of portal venous invasion,and the presence or absence of hepatic lobar *** TNM classification,besides the usual descriptors,tumor,node and metastases,provides additional information concerning the possibility for the residual tumor(R) and the histological grade(G).Recently,in 2011,a new consensus classification for the Perihilar cholangiocarcinoma had been *** consensus was organised by the European Hepato-PancreatoBiliary Association which identified the need for a new staging system for this type of *** classification includes information concerning biliary or vascular(portal or arterial) involvement,lymph node status or metastases,but also other essential aspects related to the surgical risk,such as remnant hepatic volume or the possibility of underlying disease.

关键词： Hilar cholangiocarcinoma Klatskin tumor Perihilar cholangiocarcinoma Bile duct cancer

Coalbed Methane Potential in the Basin Guardo-Barruelo (North Spain)

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Journal of Power and Energy Engineering 2019年第1期7卷 1-18页

作者： jose A. Gutierrez Bravo Raquel garcia Erasmo Cadena Department of Mining Engineering Universidad de León Campus de Vegazana León Spain

Coal during its carbonization process produces a gas, which, mainly formed by methane, can be used. The use of CBM (Coal bed methane) as an energetic resource is not much known in Spain. This work is the first step to enhance the development of this resource in Castilla y León Guardo-Barruelo basin. A review of the state of the art is introduced, taking into account all the factors that can influence in the development of a CBM project. Then CBM resources have been quantified for Guardo-Barruelo basin accurately for every coal bed. After that, technical feasibility has been used to evaluate total amount of gas that can be recovered.

关键词： Coal CBM Methane Castilla y León

Synthesis of Tantalum Hydride Using Mechanical Milling and Its Characterization by XRD,SEM,and TGA

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Advances in Nanoparticles 2014年第4期3卷 159-166页

作者： jose Luis Iturbe-garcia Beatriz Eugenia Lopez-Munoz Chemistry Department National Institute of Nuclear ResearchesOcoyoacacMexico

In this paper, we report the results obtained from different phases of metal hydrides. The synthesis and characterization of tantalum hydrides were obtained “in situ” during mechanical milling. Elemental Ta with purity of 99.8% was used in this investigation to obtain the hydrides. A highenergy ball milling technique was utilized to prepare hydrogenated phases. Ta hydrides and oxides were formed as function of milling process time. Milling times of 5, 10 and 20 hours were programmed, and the ball-to-powder weight ratio was 10:1. The material was first characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). Before and after hydrogenation process the material was also analyzed by TGA. X-ray diffraction analysis demonstrated that only tantalum hydrides (Ta2H and TaH0.5) were obtained after 20 h of milling. We will discuss the effect of the ball-milling process about formation “in situ” of nanometric tantalum hydrides with methanol as a hydrogen source.

关键词： Nanometric Ta Hydrides Mechanical Milling Methanol Dissociation XRD TGA SEM

Liver metastasis of endometrial stromal sarcoma

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World Journal of Hepatology 2012年第12期4卷 415-418页

作者： jose M Ramia Roberto De la Plaza Ines garcia Cristian Perna Pilar Veguillas Jorge García-Parreo Department of Surgery Hepatopancreatobiliary Surgical UnitHospital Universitario de GuadalajaraGuadalajara28020 MadridSpain Department of Oncology Hospital Universitario de GuadalajaraGuadalajara28020 MadridSpain Department of Pathology Hospital Universitario de GuadalajaraGuadalajara28020 MadridSpain

Resection of liver metastases from gynaecological tumours is *** stromal sarcomas(ESS) are low incidence gynecological tumours which can originate in previous sites of endometriosis or following metaplasia of the pelvic peritoneal wall,and which are exceptionally associated with liver *** present a 68-year-old woman with a ESS and metachronic liver metastasis treated by liver *** is very little literature on clinical management about liver metastasis from ESS,but extrapolating the data obtained with liver metastasis from sarcomas and uterine tumours,we should recommend resection as this is considered a resectable extrauterine *** cases with more sites of extrauterine disease,liver resection should also be performed if the other sites are resectable.

关键词： Sarcoma Stromal Endometrial Liver Metastasis Review

Mullim-墨西哥传统菜Mole创业研究

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Mullim-墨西哥传统菜Mole创业研究

作者： jose Luis garcia Vazquez 上海外国语大学

学位级别：硕士

本论文旨在研究在墨西哥创建一家生产销售墨西哥传统食品Mole的品牌企业的可行性。Mole是一种墨西哥传统酱汁,将以Mullim为商标以表达产品的丰富的历史文化传统。本研究将探讨企业构想的可行性,以及在墨西哥市场和国际市场成功的可能性... 详细信息

本论文旨在研究在墨西哥创建一家生产销售墨西哥传统食品Mole的品牌企业的可行性。Mole是一种墨西哥传统酱汁,将以Mullim为商标以表达产品的丰富的历史文化传统。本研究将探讨企业构想的可行性,以及在墨西哥市场和国际市场成功的可能性。本研究在蓝海战略、价值链分析、波特五力模型以及PEST模型的基础上构建企业的总体战略。当前墨西哥超市中销售的Mole虽然廉价但质量平平,为数不多的优质Mole通常没有品牌影响力。计划成立的公司将采用家族企业为基础的小型私营公司形式。除了采用具有文化传统内涵的Mullim为品牌外,公司还将通过产品的包装形式强调其文化品位。本研究涵盖公司和品牌创立所需的所有元素,包括品牌建设、公司架构、产品开发和生产、零售渠道,以及公司在市场中发展所需的管理手册和运营流程。本研究还采用严格的财务标准对企业各环节财务可行性进行了分析验证。Mullim将在本研究的基础上首先在墨西哥城开展业务,待条件成熟后将在墨西哥其他地区以及国际市场拓展市场。本研究的创新之处在于通过现代管理理念将一种传统食品提升为拥有丰富文化内涵和国际市场潜力的高端商品。本研究不仅能为公司实际运营打下基础,还可以为类似商业计划提供借鉴参考作用。

关键词：战略创业计划墨西哥市场 Mole Mullim

Games-Based Learning Framework

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Computer Technology and Application 2011年第11期2卷 906-911页

作者： Antonio garcia-Cabot Eva garcia Roberto Barchino Luis de-Marcos jose-Maria Gutierrez jose-Antonio Gutierrez jose-Javier Martinez Salvador Oton jose-Ramon Hilera Computer Science Department University of Alcala Alcala de Henares Madrid 28871 Spain

This work presents the authors＇ experience in the field of mobile technologies, from which several initiatives have emerged. As result of this, a games-based framework for learning has been developed in these last years. This framework is composed by a competition called Mobigame, which has as main aim to stimulate the participation of the students. By participating in this competition participants learn to develop for mobile devices. A game to practice Japanese is also presented in this article, which was presented in the above mentioned competition. This game has been developed for mobile phones or PDAs （Personal Digital Assistants） based on the JME （Java Mobile Edition） technology. Finally, another initiative is also presented： A free download platform of digital contents for mobile devices based on info-educational games.

关键词： Game-based learning mobile framework.

Mid and late Holocene forest fires and deforestation in the subalpine belt of the Iberian range,northern Spain

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Journal of Mountain Science 2016年第10期13卷 1760-1772页

作者： jose M.garcia-RUIZ Yasmina SANJUAN Graciela GIL-ROMERA Penelope GONZALEZ-SAMPERIZ Santiago BEGUERIA jose ARNAEZ Paz COBA-PEREZ Amelia GOMEZ-VILLAR Javier ALVAREZ-MARTINEZ Noemi LANA-RENAULT Estela PEREZ-CARDIEL Carlos LOPEZ DE CALLE Instituto Pirenaico de Ecologfa Consejo Superior de Investigaciones Cientificas(IPE-CSIC)Campus de Aula DeiP.O.Box 13.03450.080-ZaragozaSpain Estacion Experimental de Aula Dei Consejo Superior de Investigaciones Cientificas(EEAD-CSIC)Campus de Aula DeiP.O.Box 13.03450.080-ZaragozaSpain Area of Physical Geography University ofLa Rioja26.004-LogronoSpain Centro de Investigaciones en Geografia Ambiental Universidad Nacional Autonoma de MexicoUnidad MoreliaAntigua Carretera a Patzcuaro 870158190-MoreliaMichoacanMexico Departamento de Geografia y Geologia Faeultad de Filosofia y LetrasUniversidad de LeonCampus de Vegazana24.071-LeonSpain Departamento de Ingenieria Agricola y Forestal Universidad de ValladolidCampus La Yutera34.071-PalenciaSpain Department of Geography and Land Management University of Zaragoza50.009-ZaragozaSpain Freelance archaeologist Auda.Colon426003-LogronoSpain

The conversion of subalpine forests into grasslands for pastoral use is a well-knownphenomenon, although for most mountain areas the timing of deforestation has not been determined. The presence of charcoal fragments in soil profiles affected by shallow landsliding enabled us to date the occurrence of fires and the periods of conversion ofsubalpine forest into grasslands in the Urbión Mountains, Iberian Range, Spain. We found that the treeline in the highest parts of the northwestern massifs of the Iberian Range(the Urbión, Demanda, Neila, and Cebollera massifs) is currently between 1500 and 1600 m a.s.l., probably because of pastoral use of the subalpine belt, whereas in the past it would have reached almost the highest divides(at approximately 2100–2200 m a.s.l.). The radiocarbon dates obtained indicate that the transformation of the subalpine belt occurred during the Late Neolithic, Chalcolithic, Bronze Age, Iron Age, and Middle Ages. Forest clearing was probably moderate during fires prior to the Middle Ages, as the small size of the sheep herds and the local character of the markets only required small clearings, and therefore more limited fires. Thus, it is likely that the forest recovered burnt areas in a few decades; this suggests the management of the forest and grasslands following a slash-andburn system. During the Middle and Modern Ages deforestation and grassland expansion affected most of the subalpine belt and coincided with the increasing prevalence of transhumance, as occurred in other mountains in the Iberian Peninsula(particularly the Pyrenees). Although the occurrence of shallow landslides following deforestation between the Neolithic and the Roman Period cannot be ruled out, the most extensive shallow landsliding processes would have occurred from the Middle Ages until recent times.

关键词： Forest fires Holocene Subalpinegrasslands Shallow landslides Landscape changes Iberian Range

Social correlates of sedentary behavior in young people:The UP&DOWN study

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Journal of Sport and Health Science 2020年第2期9卷 189-196页

作者： Veronica Cabanas-Sanchez Laura garcia-Cervantes Laura Esteban-Gonzalo Maria jose Girela-Rejon jose Castro-Pinero Oscar L.Veiga Department of Physical Education Sport and Human MovementAutonomous University of MadridMadrid 28049Spain Research Centre in Physical Activity Health and Leisure(CIAFEL)Faculty of SportUniversity of PortoPorto 4200-450Portugal Nursing Department Faculty of Biomedical and Health SciencesUniversidad Europea de MadridVillaviciosa de OdonMadrid 28670Spain Department of Didactic of Corporal Expression Faculty of Education SciencesUniversity of GranadaGranada 18010Spain Department of Physical Education School of EducationUniversity of CadizPuerto RealCadiz 11519Spain

Purpose:The aim of the present study was to analyze the associations of youths' sedentary behavior(SB) with parents' and siblings' SB and physical activity(PA),as well as the associations of youths' coparticipation with parents,siblings,and friends in PA and SB with youths' ***:The sample consisted of 1543 youths(12.02±2.51 years;788 boys) enrolled in the baseline cohort of the UP&DOWN *** was assessed by accelerometry and *** reported the time spent by their parents and siblings watching television,playing videogames,surfing the Internet,sitting/resting,and doing ***,participants reported coparticipation with parents,siblings,and friends in these *** mixed models,including school and city as random effects,were ***:Parents' television time was positively associated with youths' screen-based *** with friends in playing videogames(in boys) and in surfing the Internet(in girls) showed a positive association with screen-based SB and a negative association with educational-based ***,coparticipation with siblings and friends in PA was inversely associated with accelerometer-based SB in boys and ***:Our results emphasize the important role of social modeling in the development of sedentary lifestyles in *** aimed at reducing health risk behaviors in youths could be more effective if they are oriented from a social perspective that involves their families and networks of their closest friends.

关键词： Friends Parents Sedentary behavior Siblings Social environment