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World Journal of Nano Science and Engineering 2012年第4期2卷 213-218页

作者： jacobo Martínez-Reyes Lucia Graciela Díaz Barriga-Arceo Luis Rendón-Vazquez Reynaldo Martínez-Guerrero Néstor Romero-Partida Eduardo Palacios-González Vicente Garibay-Febles Jaime Ortiz-López IMP-Molecular Engineering Program México City México National Polytechnic Institute (IPN) ESFM UPALM México City México National Polytechnic Institute (IPN) ESIQIE UPALM México City México ROMFER S.A. de C.V. México City México UNAM-FCiencias México City México

In the present work the synthesis of C60 produced in a conventional microwave oven from the decomposition of camphor resin is reported. The polycrystalline structure of the sample was determined by X-Ray Diffraction (XRD), the sample showed several phases, the main phase corresponds to fullerene C60 ordered in a Face-Centered Cubic structure (FCC), with two more structures: one orthorhombic system and the other the monoclinic system coexisting also with graphite 2H phase. It was observed in a Scanning Electron Microscopy (SEM), that the sample formed thin films of stacked carbon. Whereas in a High Resolution Transmission Electron Microscopy (HRTEM), measurements in Bright Field mode revealed that the main phase of the material is C60 ordered in FCC structure and the elemental composition and atomic bonding state can be determined by analyzing the energy with the electron microscope by Elesctron Energy- Loss Spectroscopy (EELS), technique allowed confirm all the phase C60 established with XRD observations.

关键词： Microwave-Assisted Synthesis Carbon Film Fullerene

Comparative Evaluation of a Modified Acetic Method for Extraction of Antioxidant Compounds from Black Beans (<i>Phaseolus vulgaris</i>)

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Food and Nutrition Sciences 2012年第3期3卷 348-353页

作者： Jose F. Islas Alfredo J. Dávalos-Balderas Netzahualcóyotl Arroyo-Currás Beiman G. Cano Paulina Galindo-jacobo Gustavo Guajardo-Salinas Angel Gaytan-Ramos Jorge E. Moreno-Cuevas Laboratorio de Terapia Celular Centro de Investigación y Transferencia en Salud (CITES)-Escuela de Medicina Ignacio A. Santos Monterrey México.

Extraction of phenolic compounds from bean seed coats by acetic acid was evaluated and compared to conventional extraction with 80% methanol. Total phenols, flavonoids and free radical scavenging capacity were determined by colorimetric methods. Furthermore, qualitative flavonoid characterization was performed via HPLC diode array. The acetic acid extract contained 73.4 ± 7 mg/g of sample expressed as gallic acid equivalents (GAE), and 41.3 ± 4 mg/g as catechin equivalents (CE). The acetic acid extract (at 1 mg/mL) showed over 89% efficiency to scavenge the 1,1 diphenyl-2-picrylhydrazil (DPPH) radical (EC50 = 6.13 mg extract/mg standard). Gallic acid, delphinidin-3-glycoside, petunidinglycoside, petunidin, malvidin-3-glycoside, myricetin-glycoside, quercitin-glycoside, saponin (β-g), and 3-hydroxy-5, 7-megastigmadien-9-one were identified in both extracts. Additionally, kaempferol-3-glycoside was found in the acetic acid extract. Sequential acetic acid extractions indicated that the antiradical activity was about 90% in DPPH radical scavenging within the first 8 h of extraction, when compared to a 24 h extraction. In general, acetic acid offered a faster and more efficient approach for the extraction of

关键词： Acetic Acid Antioxidants DPPH Scavenging Extraction Black Beans

Seasonal Variability in the Distribution of Phytoplankton in Paracas Bay/Peru, as a Response to Environmental Conditions

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Journal of Environmental Science and Engineering(B) 2019年第1期8卷 7-16页

作者： Sonia Sánchez Nelly jacobo Avy Bernales Augusto Franco Jorge Quispe Georgina Flores Laboratory of Phytoplankton and Primary Production Instituto del Mar del Peru Chucuito Callao 07001 Peru Functional Area of Research in Physical Oceanography Instituto del Mar del Peru Chucuito Callao 07001 Peru Functional Area of Research in Chemical Oceanography Instituto del Mar del Peru Chucuito Callao 07001 Peru

During 2013-2015, a series of bio-oceanographic surveys was carried out in Paracas bay (13°50′ S). This coastal habitat represents a transition between open ocean and continent. Changes in distribution and structure of phytoplankton community and presence of noxious algal blooms were evaluated. The vertical stability of water column was analyzed on transects of temperature, salinity and potential density. Stratification of the water column as well as other variables presented a seasonal behavior. The maximum values were recorded in summer and were directly related to the seasonal heat flux in surface layers of the bay, while in winter this stratification index was minimum. N/P ratios showed a seasonal variation with highest values in winter and lowest ones in summer. Silicate concentrations were minimum mainly during in spring due to high biological fixation. The dominance of diatoms was evident in winter and spring, with maximum abundances of r strategists. The diversity and equitability indexes were low (< 3 bits?cel^-1 and 0.31, respectively). During summer, there was a greater contribution of oceanic species, with high concentrations of the dinoflagellate Prorocentrum cordatum;and a higher frequency of algal blooms (Akashiwo sanguinea, Heterosigma akashiwo, Eutreptiella gymnastica and Gonyaulax polygramma) in the coastal zone. Silicates and pH presented a significant correlation with diatom abundances in spring, whilst dinoflagellates were associated to warm and salinity conditions in summer. Weak correlations were found for potentially toxic dinoflagellates with temperature and for Pseudo-nitzschia group with silicates and phosphates.

关键词： HAB transition zones inshore ecosystem Paracas bay-Peru phytoplankton

Analysis Spectroscopic by Fourier Transform Infrared of Butter Made from Vegetable Oil and Pure Cow Milk Subjected at Thermo-Oxidation Processes

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材料科学与工程（中英文版） 2010年第6期4卷 32-35页

作者： Jose Alberto Ariza-Ortega Joel Diaz-Reyes Raul Rene Robles-De-La-Torre Raul jacobo Delgado-Macuil Centro de Investigacion en Biotecnologia Aplicada del Instituto Polit~cnico Nacional Ex-Hacienda de San Juan Molino Km. 1.5.Tepetitla Tlaxcala 90700 Mexico

During the hydrogenation process of vegetable, oils originates isomer with trans fatty acids (TFA). Various investigations have been made to know the effect of TFA on health and it has been reported in the literature that if they are consumed in large proportions increases low density lipoprotein causing an imbalance in cholesterol, which causes cardiovascular problems. As a result, some countries have legislated and regulated the TFA content in foods. The purpose of this work is to study the FA of the butters produced from hydrogenated vegetable oil (MV) and pure cow"s milk (MPV) with and without oxidation by Fourier Transform Infrared Spectroscopy (FTIR) spectroscopy. The butters were acquired at a local supermarket and oxidized at 200 oC by 30 min. Infrared Radiation (IR) measurements were carried out in the Attenuated Total Reflectance mode and in the region of 400-4000 cm-1. IR spectra of the two butters with and without oxidation present absorption bands around 968 and 3006 cm-1, which are characteristic of the functional groups trans and cis, respectively. The MV presented a greater intensity; in addition, it was more stable to heat treatment. With FTIR is possible to define precisely the peak associated with the functional group cis.

关键词：傅立叶变换红外光谱热氧化过程氢化植物油纯牛奶油制低密度脂蛋白 FTIR TFA

Study by Fourier Transform Infrared Spectroscopy of the Avocado Oils of the Varieties Hass, Criollo and Fuerte

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材料科学与工程（中英文版） 2010年第5期4卷 61-64页

作者： Jose Alberto Ariza-Ortega Maria Guadalupe Mendez-Ramos Joel Diaz-Reyes Rafil jacobo Delgado-Macuil Rafil Rend Robles-de-la-Torre Centro de Investigaci6n en Biotecnologia Aplicada del Instituto Polit~cnico Nacional Ex-Hacienda de San Juan Molino. Km. 1.5.Tepetitla Tlaxcala 90700 Mexico

Edible oils are obtained by two procedures: by pressing the fruit and with organic solvents. However, there are reports that indicate that the use of solvents affect the quality of the fatty acids inducing the formation of trans isomers, which are banned in many countries because these consumed in large quantities are cause of cardiovascular diseases and increase the cholesterol. The purpose of this work is to apply FTIR to study the trans fatty acids in the avocado oils of the varieties Hass, Fuerte and Criollo extracted by centrifugation (AHC, AFC and ACC, respectively) and with hexane (AHH, ACH and AFH, respectively). The Infrared spectra were obtained with Fourier Transform Infrared (FTIR) in the mid region (4000-600 cm-1). The AHC, AFC and ACC Oils IR spectra show a very intensity band at the frequency 723 cm-1, which corresponds to the functional group cis with a bending vibration mode. For the AFH the trans functional group was identified in the band sited at 968 cm-1 with a strong intensity. The centrifuge method is an alternative for obtaining avocado oil, because the degradation of the fatty acids is minimum and the green color is maintained.

关键词：傅里叶变换红外光谱品种克里奥反式脂肪酸自适应跳频酪梨弯曲振动模式菲

Endoscopic resection techniques and ablative therapies for Barrett’s neoplasia

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World Journal of Gastrointestinal Endoscopy 2011年第9期3卷 171-182页

作者： jacobo Ortiz-Fernández-Sordo Adolfo Parra-Blanco Alejandro García-Varona María Rodríguez-Peláez Erika Madrigal-Hoyos Irving Waxman Luis Rodrigo Endoscopy Unit Department of GastroenterologyCentral University Hospital of AsturiasCelestino Villamil S/NOviedo 33006AsturiasSpain Center for Endoscopic Research and Therapeutics Department of MedicineSection of GastroenterologyUniversity of Chicago Medical Center5758 SMaryland AvenueChicagoIL 60637United States Department of Pathology Central University Hospital of AsturiasCelestino Villamil S/NOviedo 33006AsturiasSpain Department of Gastroenterology Central University Hospital of AsturiasCelestino Villamil S/NOviedo 33006AsturiasSpain

Esophageal adenocarcinoma is the most rapidly increas- ing cancer in western ***-grade dysplasia (HGD)arising from Barrett’s esophagus(BE)is the most important risk factor for its development,and when it is present the reported incidence is up to 10% per *** in the setting of BE develops through a well known histological sequence,from non-dysplastic Barrett’s to low grade dysplasia and then HGD and *** surveillance programs have been established to detect the presence of neo- plasia at a potentially curative *** developed endoscopic treatments have dramatically changed the therapeutic approach of *** neoplasia is confined to the mucosal layer the risk for developing lymph node metastasis is negligible and can be successfully eradi- cated by an endoscopic approach,offering a curative in- tention treatment with minimal *** therapies include resection techniques,also known as tissue-acquiring modalities,and ablation therapies or non-tissue acquiring *** aim of endoscopic treatment is to eradicate the whole Barrett’s segment,since the risk of developing synchronous and metachro- nous lesions due to the persistence of molecular aberra- tions in the residual epithelium is well established.

关键词： Barrett’s oesophagus Esophageal adenocarcinoma Endoscopic mucosal resection Endoscopic submucosal dissection Radiofrequency ablation

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都柏林大学未来校园

现代装饰 2018年第9期 128-131页

作者： Steven Holl Chris McVoy Filipe Taboada Ruoyu Wei Alessandra Catherine Calaguire Michael Haddy Seo Hee Lee jacobo Mlngorance Arranz Kavanagh Tuite Architects-Brian Kavanagh Fergal Ryan Arup HarrisonStevens Transsolar Brightspot Strategy 范嘉苑美国Steven Holl Architects Steven Hoil Architects

近日,Steven Holl Architects赢得了都柏林大学国际设计竞赛方案的竞标。此项目的重点是要打造一个创意设计中心,并通过这个空间将之与周围的林地景色及校园动线建立起联系。根据设计团队的预想,建筑将会伫立在一片倒影池之上,而建筑结... 详细信息

近日,Steven Holl Architects赢得了都柏林大学国际设计竞赛方案的竞标。此项目的重点是要打造一个创意设计中心,并通过这个空间将之与周围的林地景色及校园动线建立起联系。根据设计团队的预想,建筑将会伫立在一片倒影池之上,而建筑结构的设计灵感则来自于世界著名自然遗产＂巨人石道＂（Giant＇s Causeway）,棱柱般的建筑形态能轻易吸引人驻足欣赏。建筑内部充分利用自然光线,并将户外景色揽入室内,使空间看起来宽敞明亮。

关键词：都柏林校园大学国际设计竞赛建筑结构自然光线设计中心设计灵感