By Christopher Warman Local Government Correspondent, By Hugh Noyes Parliamentary Correspondent, By Paul Routledge Labour Editor, By Michael Hatfield, From Nicholas Ashford, By Michael Baily Transport Correspondent, From Annabel Ferriman, By Hugh Clayton, By Stewart Tendler, By Our Theatre Reporter, From Donald Macintyre Labour Reporter, By Our Political Correspondent, From Our Labour Editor, By Peter Pulzer, By Our Consumer Affairs Correspondent, By George Clark Political Correspondent, From Our Correspondent, By Philip Howard, By Peter Hennessy, By Fred Emery Political Editor, By Our Home Affairs Correspondent, By Robin Young, By Christopher Thomas Labour Reporter, By Ian Bradley, By Peter Evans Home Affairs Correspondent, By Our Political Staff, By Our Political Reporter, By Diana Geddes Education Correspondent, By Our Labour Staff, From William Chislett, From Jose Shercliffe, From Harry Debelius, From Charles Hargrove, From Michael Knipe, From Our Own Correspondent, From Patrick Brogan, From Christopher Walker, From Eric Marsden, By Our Diplomatic Correspondent, From Alan McGregor, From David Cross, From Ivor Davis, From Richard Wigg, From David Bonavia, From Peter Hazelhurst, Brian Montgomery, Gerald Ely, By Michael Phillips Racing Correspondent, From John Blunsden, By Rex Bellamy Tennis Correspondent, From Mitchell Platts, Gerald Sinstadt, Gerry Harrison, From Nicholas Keith, By Srikumar Sen, By Cliff Temple, Nicholas Wapshott, Paul Griffiths, Irving Wardle, Ned Chaillet, Joan Bakewell, Barry Millington, Mario Modiano, Bernard Levin, PHS, Geoffrey Smith, DAVID SIMPSON, , LUIS MIGUEL PEREIRA, , JOHN BOULTON, , JOHN LAWRENCE, , ELIZABETH ANSTEY, , MILES HORDERN, , PETER STEPHENS, , P. E. LUSCOMBE, , CLIVE DAVIES, , McCLUSKEY, , PETER HOWARD, , GILBERT LONGDEN, , ROBERT KILROY-SILK, , A. TARI, , MARJORIE M. LUNN, , NICHOLAS BETHELL, , By Pearce Wright Science Editor, By Martin Huckerby, By Geraldine Norman Sale Room Correspondent, By Our Music Reporter, By Edward Townsend, By Derek Harris Commercial Editor, By Ray Maughan, By John Whitmore Financial Correspondent, From Frank Vogl, By R. W. Shakespeare, Maurice Corina, By Margaret Stone, By Patricia Tisdall, By John Huxley, By Paul Routledge, A. D. WILSON, , D. B. BUCHANAN, , MICHAEL JOSEPH, , B. BARKER, , KEITH THOMAS, , BY THE FINANCIAL EDITOR, Michael Baily, Kenneth Owen Technology Correspondent, By Peter Wainwright, By Nicholas Hirst, H.C., by Hugh Clayton, by Harvey Wood, by Len Jackson, by Patricia Tisdall, by Clive Borrell, by Maurice Corina,
... Justice Minister, The Rev Geoffrey Shaw, Dr Federico Chavez, Mr Roman Karmen, Mr John Parkhurst, Sir Rhys ...
1978 - Gale Group | TDA
Humberto Lobato‐Morales, Alonso Corona‐Chávez, José‐Luis Olvera‐Cervantes, Ricardo A. Chavez‐Perez, José Luis Medina‐Monroy,
A wireless sensing system for the evaluation of the complex dielectric permittivity of solvent liquids is presented. Two sensing tags are proposed for testing of the samples. The first tag is based on a cavity resonator and the second makes use of the epsilon-near-zero effect. Both circuits are designed over the planar substrate-integrated-waveguide (SIW) technology, and operate at 4 GHz. A quartz capillary tube is used for the liquid measurements where only a small amount of sample volume is required. ...
Tópico(s): Microwave Engineering and Waveguides
2014 - IEEE Microwave Theory and Techniques Society | IEEE Transactions on Microwave Theory and Techniques
Emilio Prieto‐Díaz‐Chávez, José Luis Medina-Chávez, Alejandro González‐Ojeda, Roberto Anaya‐Prado, Benjamín Trujillo‐Hernández, C. Vásquez,
Purpose: The purpose of this study is to compare the safety and complications of direct trocar insertion without pneumoperitoneum (DTI) with Veress needle (VN) in laparoscopic cholecystectomy (LC). Methods: We studied 84 patients admitted to our hospital for LC, in a random simple blind design, 42 patients were assigned to DTI and 42 to VN. The variables analysed were: procedure complications, laparoscope insertion time and duration of surgery.Results: Complication percentages between the groups were ...
Tópico(s): Abdominal Surgery and Complications
2006 - Taylor & Francis | Acta Chirurgica Belgica
Patricia Segura-Medina, Mario H. Vargas, Guadalupe Córdoba-Rodríguez, Jaime Chávez, José Luis Arreola, Patricia Campos‐Bedolla, Vı́ctor Ruiz, Luz María García-Hernández, Cármen Méndez, Luis M. Montaño,
A possible role of 5-hydroxytryptamine (5-HT) in the origin of antigen-induced airway hyperresponsiveness (AI-AHR) has been scarcely investigated.To explore the participation of different 5-HT receptors in the development of AI-AHR in guinea-pigs.Lung resistance was measured in anaesthetized guinea-pigs sensitized to ovalbumin (OVA). Dose-response curves to intravenous (i.v.) acetylcholine (ACh) were performed before and 1 h after antigenic challenge and expressed as the 200% provocative dose (PD(200)). ...
Tópico(s): Respiratory and Cough-Related Research
2009 - Wiley | Clinical & Experimental Allergy
Víctor E. Balderas‐Hernández, Andrea Sabido, Patrícia Silva, Natividad Cabrera-Valladares, Georgina Hernández‐Chávez, José Luis Báez‐Viveros, Alfredo Martı́nez, Francisco Bolívar, Guillermo Gosset,
Anthranilate is an aromatic amine used industrially as an intermediate for the synthesis of dyes, perfumes, pharmaceuticals and other classes of products. Chemical synthesis of anthranilate is an unsustainable process since it implies the use of nonrenewable benzene and the generation of toxic by-products. In Escherichia coli anthranilate is synthesized from chorismate by anthranilate synthase (TrpED) and then converted to phosphoribosyl anthranilate by anthranilate phosphoribosyl transferase to ...
Tópico(s): Biofuel production and bioconversion
2009 - BioMed Central | Microbial Cell Factories
Humberto Lobato‐Morales, D. V. B. Murthy, Alonso Corona‐Chávez, José‐Luis Olvera‐Cervantes, Juan Martinez-Brito, Luis Gerardo Guerrero-Ojeda,
A planar epsilon-near-zero (ENZ) tunnel structure implemented on substrate integrated waveguide (SIW) technology is used to evaluate the complex dielectric permittivity of various materials. Design, optimization, and fabrication of the ENZ tunnel structure are explained. Simulations and measurements on various dielectric samples using the cavity perturbation technique of the proposed structure are presented. Measured values of the permittivity are in good agreement with standard values. Sensitivity ...
Tópico(s): Radio Frequency Integrated Circuit Design
2011 - IEEE Microwave Theory and Techniques Society | IEEE Transactions on Microwave Theory and Techniques
Lorena Orozco, Rafael Velázquez, Julian Zielenski, L.-C. Tsui, María Eugenia Quevedo Chávez, José Luis Lezana, Yolanda Bravo Saldaña, Elena Martín Hernández, Alessandra Carnevale,
Tópico(s): Tracheal and airway disorders
2000 - Springer Science+Business Media | Human Genetics
Julio C. Chávez, José Luis de la Vega‐Beltrán, Jessica Escoffier, Pablo E. Visconti, Claudia L. Treviño, Alberto Darszon, Lawrence Salkoff, Celia M. Santi,
Unlike most cells of the body which function in an ionic environment controlled within narrow limits, spermatozoa must function in a less controlled external environment. In order to better understand how sperm control their membrane potential in different ionic conditions, we measured mouse sperm membrane potentials under a variety of conditions and at different external K+ concentrations, both before and after capacitation. Experiments were undertaken using both wild-type, and mutant mouse sperm ...
Tópico(s): Ovarian function and disorders
2013 - Public Library of Science | PLoS ONE
José Omar, Paulina Torres‐Rodríguez, Linda S. Forero-Quintero, Julio C. Chávez, José Luis de la Vega‐Beltrán, Fabrizio Carta, Claudiu T. Supuran, Joachim W. Deitmer, Claudia L. Treviño,
Fertilization is a key reproductive event in which sperm and egg fuse to generate a new individual. Proper regulation of certain parameters (such as intracellular pH) is crucial for this process. Carbonic anhydrases (CAs) are among the molecular entities that control intracellular pH dynamics in most cells. Unfortunately, little is known about the function of CAs in mammalian sperm physiology. For this reason, we re-explored the expression of CAI, II, IV and XIII in human and mouse sperm. We also ...
Tópico(s): Chemical Reactions and Mechanisms
2015 - Elsevier BV | Biochemical and Biophysical Research Communications
Julio C. Chávez, José Luis de la Vega‐Beltrán, José Omar, Paulina Torres‐Rodríguez, Takuya Nishigaki, Claudia L. Treviño, Alberto Darszon,
The sperm acrosome reaction (AR), an essential event for mammalian fertilization, involves Ca 2+ permeability changes leading to exocytosis of the acrosomal vesicle. The acrosome, an intracellular Ca 2+ store whose luminal pH is acidic, contains hydrolytic enzymes. It is known that acrosomal pH (pH acr ) increases during capacitation and this correlates with spontaneous AR. Some AR inducers increase intracellular Ca 2+ concentration ([Ca 2+ ] i ) through Ca 2+ release from internal stores, mainly the acrosome. ...
Tópico(s): Plant Reproductive Biology
2017 - Wiley | Journal of Cellular Physiology
M. Chávez, José Luis Arciniega Martínez, Jose Alberto Cabello, Esteban Ferrer,
We present simulations of turbulent detached flows using the commercial lattice Boltzmann solver XFlow (by Dassault Systemes). XFlow’s lattice Boltzmann formulation together with an efficient octree mesh generator reduce substantially the cost of generating complex meshes for industrial flows. In this work, we challenge these meshes and quantify the accuracy of the solver for detached turbulent flows. The good performance of XFlow when combined with a Large-Eddy Simulation turbulence model is demonstrated ...
Tópico(s): Fluid Dynamics and Turbulent Flows
2020 - Multidisciplinary Digital Publishing Institute | Energies
Emilio Prieto‐Díaz‐Chávez, José Luis Medina-Chávez, Roberto Anaya‐Prado,
Tópico(s): Abdominal Surgery and Complications
2009 - Springer Science+Business Media | Hernia
María Isabel Carrillo-Díaz, Luis Alberto Miranda‐Romero, Griselda Chávez-Aguilar, José Luis Zepeda-Batista, Mónica González-Reyes, C.A.C. García, Deli Nazmín Tirado‐González, Gustavo Tirado‐Estrada,
The present review examines the factors and variables that should be considered to obtain, design, and evaluate EFEs that might enhance ruminal NDF degradability. Different combinations of words were introduced in Google Scholar, then scientific articles were examined and included if the reported factors and variables addressed the objective of this review. One-hundred-and-sixteen articles were included. The fungal strains and culture media used to grow white-rot fungi induced the production of ...
Tópico(s): Phytase and its Applications
2022 - Multidisciplinary Digital Publishing Institute | Animals
Luis Alberto Laime-Oviedo, Amanda Allison Soncco-Ccahui, Gladis Peralta-Alarcon, Carlos Alberto Arenas-Chávez, José Luis Pineda Tapia, José Díaz, Aldo Álvarez-Risco, Shyla Del-Aguila-Arcentales, Neal M. Davies, Jaime A. Yáñez, Corina Vera-Gonzáles,
In the present investigation, an ethanolic fraction (EF) of Lepechinia meyenii (salvia) was prepared and fractionated by gradient column chromatography, and the main secondary metabolites present in the EF were identified by HPLC-MS. Silver nanoparticles (AgNPs) were synthesized and conjugated with the EF of Lepechinia meyenii (salvia). The AgNPs synthesis was optimized using Plackett-Burman design and response surface methodology (RSM), considering the following independent variables: stirring speed, ...
Tópico(s): Essential Oils and Antimicrobial Activity
2022 - Multidisciplinary Digital Publishing Institute | Processes
D. V. B. Murthy, Alonso Corona‐Chávez, José‐Luis Olvera‐Cervantes,
A novel compact Epsilon Near Zero (ENZ) tunneling circuit with microstrip coupling for high integrability applications is presented. Full design procedure, simulation and experimental results are shown, and a methodology to extract the efiective permittivity and propagation constants in the tunnel is described. Detailed analysis of the dependence on external quality factor and tunnel to feed height ratio is investigated. Simulation and measurement results of the ENZ tunnel structure are in good agreement.
Tópico(s): Photonic and Optical Devices
2010 - The Electromagnetics Academy | Progress In Electromagnetics Research C
D. I. Jarvis, A. H. D. Brown, Pham Hung Cuong, Luis Collado-Panduro, Luis Latournerie–Moreno, Sanjaya Gyawali, Tesema Tanto, Mahamadou Sawadogo, István Már, Mohammed Sadiki, Nguyen Thi-Ngoc Hue, Luis Manuel Arias-Reyes, D. Balma, J. Bajracharya, Fernando Castillo, Deepak Rijal, Loubna Belqadi, R. B. Rana, Seddik Saidi, Jeremy T. Ouedraogo, Roger G. Zangre, Keltoum Rhrib, José Luis Chávez, Daniel J. Schoen, Bhuwon Sthapit, Paola De Santis, Carlo Fadda, T. Hodgkin,
Varietal data from 27 crop species from five continents were drawn together to determine overall trends in crop varietal diversity on farm. Measurements of richness, evenness, and divergence showed that considerable crop genetic diversity continues to be maintained on farm, in the form of traditional crop varieties. Major staples had higher richness and evenness than nonstaples. Variety richness for clonal species was much higher than that of other breeding systems. A close linear relationship between ...
Tópico(s): Agricultural Innovations and Practices
2008 - National Academy of Sciences | Proceedings of the National Academy of Sciences
Paul D. Hale, Jeffrey A. Jargon, C. M. Jack Wang, Brett Grossman, Mathew Claudius, Jose Luis Chavez Torres, Andrew Dienstfrey, Dylan F. Williams,
We describe a stable method for calibrating digital waveforms and eye diagrams by use of the measurement system response function and its regularized inverse. The function describing the system response includes the response of the oscilloscope and any associated cables and test fixtures. We demonstrate the effectiveness of the method by performing a statistical analysis of the calculated eye height and eye width obtained from a controlled experiment consisting of multiple cable lengths, bit rates, ...
Tópico(s): Advanced Electrical Measurement Techniques
2011 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Instrumentation and Measurement
M. Aimadeddine, V. Arnal, A. Farcy, C. Guedj, T. Chevolleau, N. Possémé, T. David, M. Assous, O. Louveau, F. Volpi, Jose Luis Chavez Torres,
In this study, a PECVD porous SiOCH dielectric with k = 2.4 is integrated in a Cu single damascene architecture. The main issue investigated is the low k compatibility with different photo-resist ash chemistries as well as their effects on the properties of the dielectric after integration. Metal 1 test structures are characterized by TEM, EFTEM and by electrical measurements. Conduction mechanisms are studied from I(V) measurements for different strip conditions. Impacts of ash processes on leakage, ...
Tópico(s): Metal and Thin Film Mechanics
2005 - Elsevier BV | Microelectronic Engineering
Cinna Lomnitz, Sergio R. Rodríguez Elizarrarás,
... a pleasure to acknowledge the valuable comments of José Luis Chávez and Franz Sauter in... You do not have ...
Tópico(s): Geological and Tectonic Studies in Latin America
2001 - Seismological Society of America | Seismological Research Letters
Lourdes Mateos-Maces, Fernando Castillo‐González, José Luis Chávez Servia, Julio Arturo Estrada-Gómez, Manuel Livera-Muñoz,
<p>En este trabajo, se describió y clasificó la agrobiodiversidad del sistema milpa en la región tropical de San Felipe Usila, Oaxaca, México, a partir de la percepción de agricultores sobre la diversidad fenotípica y usos de la variabilidad intraespecífica y biodiversidad recolectada a nivel de parcela. Bajo un enfoque de agroecosistemas, se obtuvo información de tres sistemas de producción, denominados: laderas pedregosas (> 18° de pendiente), lomeríos irregulares y pedregosos con pendientes ...
Tópico(s): Agricultural and Food Production Studies
2016 - National University of Colombia | Acta Agronómica
James R. Wasson, Jose Luis Chavez Torres, H. R. Rampersad, J. C. Wolfe, Paul Ruchhoeft, Martin Herbordt, H. Löschner,
The implantation of ions into the silicon membrane masks of ion beam lithography is known to create compressive stress which leads to very serious distortion after only a few tens of exposures. In this article, we describe a new, dimensionally stable, protective coating for silicon membranes which meets the exacting requirements of very large scale integrated manufacturing. The coating is formed by first depositing a low density, low stress graphitic carbon film which is subsequently amorphized ...
Tópico(s): Integrated Circuits and Semiconductor Failure Analysis
1997 - American Institute of Physics | Journal of Vacuum Science & Technology B Microelectronics and Nanometer Structures Processing Measurement and Phenomena
Emilio Prieto‐Díaz‐Chávez, José Luis Medina-Chávez, Éctor Jaime Ramírez-Barba, Benjamín Trujillo‐Hernández, Rebeca O Millán-Guerrero, C. Vásquez,
Purpose: The purpose of our study was to evaluate the possibility of the reduction of peritoneal adhesions to a polypropylene mesh with fibrin glue.Methods: Forty Wistar rats were assigned to two treatment groups: Group 1) hernioplasty with polypropylene mesh plus fibrin glue sealant, and Group 2) hernioplasty with polypropylene mesh without fibrin glue sealant. The variables evaluated were: presence and density of adhesion, organs or abdominal structures adhered to the polypropylene mesh, inflammatory ...
Tópico(s): Surgical Sutures and Adhesives
2008 - Taylor & Francis | Acta Chirurgica Belgica
Yadira J. Mendoza-Chávez, José Luis Uc Castillo, Adrián Cervantes-Martínez, Martha Angélica Gutiérrez-Aguirre, Hiram Castillo‐Michel, René Loredo-Portales, Bhaskar Sen Gupta, Nadia Martínez‐Villegas,
We investigated population structure and arsenic bioaccumulation and distribution in zooplankton inhabiting highly contaminated freshwater with arsenic. We collected water and zooplankton samples over a 4 year period, determined environmental temperature as well as water temperature, pH, electrical conductivity (EC), total dissolved solids (TDS), oxidation-reduction potential (ORP), dissolved oxygen (DO), major cations and anions and total arsenic concentration. We identified zooplankton species and ...
Tópico(s): Heavy metals in environment
2021 - Elsevier BV | Environmental Pollution
Sergio G. Castillo‐Vargasmachuca, Jesús T. Ponce‐Palafox, Geronimo Rodriguez Chavez, José Luis Arredondo‐Figueroa, Ernesto Chávez Ortíz, Alireza Seidavi,
The present study evaluates the effects of temperature (25 and 30°C) and salinity (25, 35 and 45‰) on juvenile growth and survival. All the experiments were carried out in the laboratory. A total of 270 specimens were used for the experiments. The results showed that more than 83% of the snapper survived at 35 to 45‰ salinity . Significant differences (P Normal 0 21 false false false ES-MX X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Tabla normal"; mso-tstyle-rowband-size:0; mso- ...
Tópico(s): Marine and fisheries research
2013 - Escuela de Ciencias del Mar, Facultad de Recursos Naturales, Pontificia Universidad Católica de Valparaíso | Latin American Journal of Aquatic Research
Sergio G. Castillo‐Vargasmachuca, Jesús T. Ponce‐Palafox, Ernesto Chávez Ortíz, José Luis Arredondo‐Figueroa,
Resumen.-Pargos lunarejos con pesos promedio de 24,5 ± 3,7 g, 55,4 ± 3,5 g y 110,2 ± 4,6 g fueron introducidos para su engorde en jaulas flotantes de 100 m 3 por un lapso de 153 días en Santa Cruz de Miramar, Nayarit, México, con la finalidad de encontrar el peso más adecuado de cultivo.Los pargos fueron alimentados dos veces al día con alimento comercial conteniendo 35 y 25% de proteína cruda durante el primero a tercer mes y en el cuarto y quinto mes respectivamente.Durante el experimento, la temperatura ...
Tópico(s): Fish Biology and Ecology Studies
2007 - University of Valparaíso | Revista de biología marina y oceanografía
María I. Chávez-Béjar, José Luis Báez‐Viveros, Alfredo Martı́nez, Francisco Bolívar, Guillermo Gosset,
The aromatic amino acid l-tyrosine is a compound with multiple applications in the food, pharmaceutical, cosmetic and chemical industries. This review summarizes the current knowledge on the metabolic pathways involved in the synthesis of this amino acid and the strategies employed to develop and improve microbial production strains. Common strategies for l-tyrosine overproduction include the elimination of negative feedback control in key pathway enzymes and increasing the pool of the aromatic ...
Tópico(s): Sirtuins and Resveratrol in Medicine
2012 - Elsevier BV | Process Biochemistry
Zail Omán Rodríguez-Moré, Humberto Lobato‐Morales, Ricardo A. Chavez‐Perez, José Luis Medina‐Monroy,
An analysis of the complex dielectric permittivity of rum ʻHavana Club Añejo 3 Años' and its mixtures with methanol, ethanol, and deionized water is presented in this work. Measurements are carried out using the open-ended coaxial probe technique within a frequency range from 500 MHz to 15 GHz. Curves of the real and imaginary parts as well as the permittivity spectra (Cole–Cole diagram) and relaxation parameters of the liquids-under-test are presented. Distribution of the relaxation parameters for ...
Tópico(s): Acoustic Wave Phenomena Research
2018 - Taylor & Francis | Journal of Microwave Power and Electromagnetic Energy
Alejandro Gutiérrez-Castillo, Amado Jiménez‐Ruiz, Melissa Chavez-Castillo, José Luis Ruíz‐Sandoval,
Septo-optic dysplasia plus is a rare congenital syndrome characterized by the classic triad of optic nerve hypoplasia, hypothalamic-hypophyseal dysfunction, and midline abnormalities, with associated malformations of cortical development. Clinical manifestations include optic nerve disease, epilepsy, intellectual delay, and endocrine dysfunction. We present the case of an 18-year-old man with a history of seizures, growth hormone deficiency, and optic nerve disease that was diagnosed with septo- ...
Tópico(s): Birth, Development, and Health
2018 - Cureus, Inc. | Cureus
Guadalupe Ortega‐Pierres, Raúl Argüello-García, Marco S. Laredo-Cisneros, Rocío Fonseca-Liñán, Misael Gómez-Mondragón, Rolando Inzunza-Arroyo, David Flores-Benítez, Arturo Raya‐Sandino, Bibiana Chávez-Munguı́a, José Luis Ventura-Gallegos, Alejandro Zentella‐Dehesa, Rosa Marı́a Bermúdez-Cruz, Lorenza González‐Mariscal,
The adhesion of Giardia duodenalis trophozoites to intestinal epithelial cells allows the onset and maintenance of giardiasis. During these interactions, epithelial cells can be committed to apoptosis by enzymes secreted by the parasites, including cysteine proteases that are increasingly identified as virulence factors in parasitic protozoa. In this work, a monoclonal antibody (mAb1G3) raised against G. duodenalis surface components was found to react with a 25 kDa protein expressed in the cell ...
Tópico(s): Toxoplasma gondii Research Studies
2018 - Elsevier BV | International Journal for Parasitology
Carolina Estefanía Chávez‐Murillo, José Luis Orona‐Padilla, Julián de la Rosa Millán,
Previous studies have related the slow digestion properties of isolated starches with their amylose to amylopectin ratio as well as their molecular structure, and in the case of flours, with their accompanying components such as proteins and fibers; which are known to restrict, to different extents the starch digestion by amylolytic enzymes. However, the botanical origin as well as the internal architecture of native starch granules plays a significant role in these characteristics. Moreover, these ...
Tópico(s): Polysaccharides Composition and Applications
2018 - Wiley | Starch - Stärke