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Chromium Differentially Affects Hydrogen Peroxide Distribution in Primary and Adventitious Roots of Arabidopsis thaliana L.

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Phyton-International Journal of Experimental Botany 2020年第1期89卷 35-43页

作者： aaron Giovanni Munguia-Rodriguez Jose Lopez-Bucio Gerardo rangel Sanchez Leon Francisco Ruiz-Herrera Yazmin Carreon-Abud Miguel Martinez-Trujillo Instituto de Investigaciones Quimico-Biológicas Universidad Michoacana de San Nicolas de HidalgoEdificio B3Ciudad UniversitariaC.P58030MoreliaMichoacanMexico Facultad de Biologia Universidad Michoacana de San Nicolas de Hidalgo.Edificio RCiudad UniversitariaC.P58030 MoreliaMichoacanMexico

The post-embryonic growth of the Arabidopsis thaliana root system can be modified by different types of stress,such as sublethal concentrations of metals,which may induce the production of reactive oxygen species(ROS).In this study,the effects of different concentrations of potassium chromate(K_(2)CrO_(4))on the distribution and relative quantity of hydrogen peroxide(H_(2)O_(2))were determined in primary and adventitious roots in A.thaliana HyPer line seedlings.This line has a biosensor that specifically reports H_(2)O_(2) levels within tissues as fluorescence.Primary root growth was inhibited at 100μM Cr(VI);in contrast,adventitious root formation was induced over the main root growth axis.These structures proliferated from 100-160μM Cr(VI),and much higher concentrations(180-200μM)of K_(2)CrO_(4) were required to affect their growth.The H_(2)O_(2) distributions were observed in the columella and lateral root cap of primary roots of plants grown in medium lacking dichromate,but following the development of toxicity symptoms,H_(2)O_(2) changed its distribution to the meristem and differentiation zones.Conversely,adventitious roots had comparable H_(2)O_(2) distribution patterns in untreated plants and those exposed to Cr(VI)supplementation.Thus,differential H_(2)O_(2) distribution correlates with the resistance of adventitious roots,but not primary roots,to dichromate and underlies cell reorganization at the apex to support growth.

关键词： Chromate hydrogen peroxide root growth meristem ion toxicity adaptation

^13C-Nuclear Magnetic Resonance （Experimental and Theorical） and FTIR of Interpenetrating Polymer Networks Based in PolyurethanelPolyaniline （PU/PANI）

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材料科学与工程（中英文版） 2010年第1期4卷 45-50页

作者： Norma-Aurea rangel-Vaizquez Rene Salgado-Delgado Edgar Garcia.hernandez Ana MariaMendoza-Martinez Mario Alejandro Gomez-Jimenez Departamento de Metalmecanica del Instituto Tecnologico de Queretaro. Ave. Tecnologico Esq. Mariano Escobedo S/N Col Centro CP 76000 Querdtaro Qro. Mexico Division de Estudios de Posgrado e Investigacion del Instituto Tecnologico de Zacatepec. Calzada Instituto Tecnologico Num. 27 Col. Ampliacion Plan de Ayala CP. 62780 Zacatepec Morelos Mexico Division de Estudios de Posgrado e Investigacion del Instituto Tecnologico de Ciudad Madero. Juventino Rosas y Jesus Urueta S/N Col. Los Mangos CP. 89440 Ciudad Madero Tamaulipas Mexico

3 PU/PANI ratios (90/10, 80/20, 70/30, respectively), were analyzed by means of the Hyperchem software 8.0v to determine the theorical structure of all materials. The Gibbs free energy was calculated from the molecular geometry analysis, obtaining a value of energy of -3869 Kcal/mol, being proven for molecular dynamic (-3516 Kcal/mol), Langevin dynamic (-3462 Kcal/mol) and Monte Carlo (-3495 Kcal/mol), these values showed that the reaction was carried out. FTIR and 13C-NMR were used to characterize the structure of 3 PU/PANI ratios, the region from 1750 to 1600 cm-1 showed different absorptions of the NH scissor of bending vibration bonds, which represents the characteristic region of the combination of PANI and PU segments. The displacements from 1740 to 1700 cm-1 were attributed to the interruption of interactions in the PU chains due to the presence of PANI present in the womb of the IPN (PU/PANI). Also, the C-H bonds of the PANI increased with the percentage of PANI in the IPN, because of some chemical bonds exist due to the conjunction between the PU and PANI. Finally, 13C-NMR and FTIR characterizations clearly showed the conversion of quinonoid to benzenoid rings.

关键词：互穿网络聚合物红外光谱特征聚苯胺聚氨酯核磁共振 HYPERCHEM 分子动力学实验

A mathematical Model to Predict Transition-to-Fatigue During Isometric Exercise on Muscles of the Lower Extremities

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Engineering（科研） 2012年第10期4卷 16-19页

作者： Jorge Garza-Ulloa Huiying Yu T. Sarkodie- Gyan Pablo rangel Olatunde Adeoye Noe Vargas hernandez Department of Electrical and Computer Engineering UTEP El Paso Texas USA Mechanical Engineering Department UTEP El Paso Texas USA

Surface Electromyography (sEMG) activities of the four muscles were studied from twelve healthy subjects to analyze muscle fatigue. Data were recorded while subjects performed isometric exercises for a period of time until fatigue. The signal was segmented with 5000 samples to enable the evolutionary process. Based on the mean power spectrum and Median Frequency (MDF) of each segment, we developed a methodology that is able to detect the signal into a meaningful sequence of Non-Fatigue to Transition-to-Fatigue. By identifying this transitional fatigue stage, it is possible to predict when fatigue will occur, which provides the foundation of the automated system that has the potential to aid in many applications of our lives, including sports, rehabilitation and ergonomics.

关键词： Surface Electromyography Transition-to-Fatigue Signal Processing Median Frequency and Power Spectrum Polynomial Regression Models

Synthesis and Characterization of Chitosan Coated Dialdehyde Cellulose with Potential Antimicrobial Behavior

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材料科学与工程（中英文版） 2010年第12期4卷 62-67页

作者： Norma-Aurea rangel-Vazquez Erik Guilbert-Garcia] Rene Salgado-Delgado Efrain Rubio-Rosas EdgarGarcla.hernandez Zully Vargas-Galarza Ismael Crispin-Espino Departamento de Metalmecdmica del Instituto Tecnol6gico de Querdtaro. Ave. Tecnol6gico Esq. Mariano Escobedo S/N Col.Centro C.P. 76000 Querdtaro Querdtaro Mdxico Division de Estudios de Posgrado e Investigaci6n del lnstituto Tecnologico de Zacatepee Calzada Teenologieo No. 27 Col.Centro C.P. 62780 A.P. 45 Zacatepec Morelos M（xico Centro Universitario de Vineulacion BUAP. Prolongaeion de la 2d sur y Av. San Claudio Col. San Manuel Ciudad Universitaria C. P. 72570 Puebla Pue. Mexico Universidad Politdcnica de San Luis Potosi Urbano Villalon No. 500 Colonia La Ladrillera C.P. 78363 San Luis PotosL SLPMexico

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史密森南广场园区规划

城市环境设计 2019年第2期118卷 160-169页

作者： aaron Hales Alana Goldweit Alexandre Hamlyn Andriani Atmadja Annette Miller Benjamin DiNapoli Benjamin Novacinski Cadence Bayley Choonghyo Lee Chris Falla Daisy Zhong Daniele Pronesti Doug Stechschulte Emily Chen Gabriel hernandez Solano Janice Rim Jennifer Shen Jeremy Alain Siegel Jihoon Hyun Julian Andres Ocampo Salazar Kalina Pilat Katarzyna Starczewska Lina Bondarenko Mahsa Malek Manon Otto Martin Voelkle Ola Hariri Otilia Pupezeanu Saecheol Oh Sara Ibrahim Stephen Kwok Stephen Steckel Suemin Jeon Tammy Teng Taylor Fulton Tianqi Zhang Vincent Fulia Wells Barber Wesley Chiang Zhifei Xu 陈子钰

通过与史密森学会、当地居民以及决策者的密切合作,我们为南广场园区制定了总体规划,作为对旧与新的重新诠释——方案利用园区内的现有元素,在严格监管与历史保护的限制中寻求自由。该提案旨在提升并扩大游客服务和教育空间,在博物馆与... 详细信息

通过与史密森学会、当地居民以及决策者的密切合作,我们为南广场园区制定了总体规划,作为对旧与新的重新诠释——方案利用园区内的现有元素,在严格监管与历史保护的限制中寻求自由。该提案旨在提升并扩大游客服务和教育空间,在博物馆与花园之间建立清晰的入口和联系,并取代已达到使用寿命的老化建筑机械系统。与此同时,团队致力于保留豪普

关键词：园区规划总体规划 Avenue 史密森史密森学会基础隔震弗里尔交通流线

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温哥华公寓

城市环境设计 2019年第2期118卷 210-219页

作者： Carl McDonald Melissa Bauld aaron Mark Alan Tansey Alex Wu Alexandra Gustafsson Alina Tamosiunaite Amina Blacksher Aran Coakley Arash Adel Ahmadian Armen Menendian Barbora Srpkova Ben Zunkeler Benjamin Caldwell Benjamin Novacinski Bennett Gale Birk Daugaard Blake Theodore Smith Brian Foster Brian Rome Carolien Schippers Christopher James Malcolm Jr. Christopher Junkin Christopher Tron David Brown David Dottelonde Deborah Campbell Doug Stechschulte Douglass Alligood Edward Yung Elena Bresciani Filip Milovanovic Francesca Portesine Gabriel hernandez Solano Gabriel Jewell-Vitale Hector Garcia Ivy Hume Jan Leenknegt Janice Rim John Kim Josiah Poland Julian Liang Julianne Gola Julie Kaufman Karol Bogdan Borkowski Kurt Nieminen Lauren Turner Lorenz Krisai Lucio Santos Marcella Martinez Martin Voelkle Matthew Dlugosz Megan Ng Michael Robert Taylor Otilia Pupezeanu Paula Domka Phillip MacDougall Ryan Yang Sean Franklin Sebastian Grogaard Simon Scheller Spencer Hayden Taylor Fulton Terrence Chew Terry Lallak Thomas Smith Tianqi Zhang Tobias Hjortdal Tran Le Valentina Mele Xinyu Wang Yaziel Juarbe Yoanna Shivarova Zach Walters Zhifei Xu Andrew Latreille Glotman Simpson Urban YVR 运小红

温哥华公寓的建成预示着这个年轻的城市正在打开城市政策制定的新局面。它将成为从Granville大桥进入温哥华市中心的城市大门。塔楼和群房的设计是对新城市主义地域类型中的"温哥华主义"建筑的全新解读,配合一座纤细的塔楼,试图保留城... 详细信息

温哥华公寓的建成预示着这个年轻的城市正在打开城市政策制定的新局面。它将成为从Granville大桥进入温哥华市中心的城市大门。塔楼和群房的设计是对新城市主义地域类型中的"温哥华主义"建筑的全新解读,配合一座纤细的塔楼,试图保留城市视觉通廊并激活步行通道。住宅塔楼借助高度和毗邻河流的地理位置,是唯一可以同时享受水景和山景的建筑,坐拥温哥华广袤的自然风光。

关键词：温哥华平面图 Dialog 立面图