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Recruitment Age of Litopenaeus vannamei (Boone, 1931) (Decapoda: Penaeidae) in the Cabeza De Toro-La Joya Buenavista Lagoon System, Oaxaca-Chiapas, Mexico

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Open Journal of Marine Science 2017年第4期7卷 511-525页

作者： pedro cervantes- hernández Pablo Torres- hernández Mario Alejandro Gómez- Ponce Institutos de Recursos Universidad del Mar Carretera a Zipolite Puerto ángel México Instituto de Industrias Universidad del Mar Carretera a Zipolite Puerto ángel México Instituto de Ciencias del Mar y Limnología Universidad Nacional Autónoma de México (Estación El Carmen) Ciudad del Carmen México

At present, the fishery of Litopenaeus vannamei continues overexploited in the Gulf of Tehuantepec (GT), Mexico. From the available literature it was demonstrated that marine closure systems implemented in GT have not worked adequately since 1993, because these are completely protecting marine recruitment seasons, and reproductive seasons were only partially considered to protect. Due to these problems, new marine closure systems were proposed in the literature, but they were not accepted by fishermen from GT because they did not include marine and lagoon recruitment information. For this reason, in this study both recruitment types were analyzed with estimations on the recruitment age (RA), and its relationship with total length and weight. To the Cabeza de Toro la Joya Buenavista lagoon system (CTJB-LS), it was concluded that young recruits migration toward outside CTJB-LS elapsed between 3 and 5-m-olds, with the highest recruit flow in 4-m-olds. Thus, this last age was called the RA of L. vannamei (at 106 mm). Maximum marine recruitment ranked from June to July, and maximum reproductive seasons were in October. In both recruitment seasons it was observed that biomass production was different. In marine season RA recorded 8.4 g more than lagoon season at the same size. Results were used in order to discus about atarraya nets uses, and to propose the implementation of a lagoon closure during July inside lagoon systems located in GT. With this proposal artisanal fishermen will be allowed to use atarraya nets with mesh opening of 25.4 mm during June, and they will obtain a good biomass production level as economic ***, with new marine closure systems shrimp reproductive seasons will be protected (from July to November).

关键词： Closure Systems Gulf of Tehuantepec Recruitment Age Recruitment Seasons White Shrimp

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Effect of Senescence Retardants on the Quality of Persian Lime Fruits

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Phyton-International Journal of Experimental Botany 2024年第8期93卷 1805-1818页

作者： Rafael Ariza-Flores Rafael Ambriz-cervantes pedro Cadena-Iñiguez Luis A.Gálvez-Marroquín Miguel A.Cano-García National Institute of Forestry Agriculture and Livestock Research(INIFAP)South Pacific Regional CenterSanto Domingo Barrio BajoVilla de EtlaOaxaca68200México National Institute of Forestry Agriculture and Livestock Research(INIFAP)Zacatepec Research StationZacatepecMorelos62780México National Institute of Forestry Agriculture and Livestock Research(INIFAP)Central Chiapas Research StationOcozocoautlaChis29140México National Institute of Forestry Agriculture and Livestock Research(INIFAP)Oaxaca Central Valley Research StationSanto Domingo Barrio BajoVilla de EtlaOaxaca68200México

The objective of this study consisted of evaluating the effect of the application of chitosan(Q),1-methylcyclopropene(1-MCP)under two controlled temperatures on some physical,physiological,and chemical parameters contributing to the quality of Persian lime Citrus latifolia *** treatments were evaluated,resulting from the combination of four senescence retardant applications(Q,1-MCP,1-MCP+Q,and without application)on fruits stored at two temperatures(12/20℃.Epidermis color(luminosity,chromaticity,and hue),fruit appearance,respiration,weight loss,total juice content,total soluble solids,and titratable acidity were registered during the *** results indicate that the 1-MCP and Q combination favored fruit postharvest quality conditions such as reducing respiration rate;maintaining fruit good appearance,turgidity,and brighter fruit chromaticity;fruits treated with chitosan and stored at 12℃,favored total soluble *** the other hand,Variables such as weight loss,juice content,acidity,phenols,flavonoids,antioxidant activity,and hue values were favored by a 12℃ storing temperature regardless of the *** general,the use of modified atmospheres,senescence retardants,and refrigeration as postharvest methods,can increase Persian lime shelf life.

关键词： Citrus latifolia quality conservation organic alternatives

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Effects of Phytoremediation on Soil Contaminated with Pb and Cd in Tolerant Bacterial Populations

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Journal of Environmental Science and Engineering(A) 2024年第4期13卷 122-127页

作者： Alejandra Vásquez María Montes Melissa cervantes María Alvarado pedro García Victor Aguilar Department of Environmental Engineering Institute for EngineeringUniversity of VeracruzBoca del RioVer.94294Mexico Department Chemical Engineering Faculty of Chemical SciencesUniversity of VeracruzBoca del RíoVer.94294Mexico Faculty of Environmental Engineering Popular Autonomous University of the State of PueblaBarrio de Santiago 72410PueblaPueMexico Department of Administration Open Education SystemUniversity of VeracruzBoca del RioVer.94294Mexico

Bacterial populations isolated from treated soil,artificially contaminated with lead(Pb)and cadmium(Cd)and undergoing a phytoremediation process were studied to determine their potential application in soil *** physicochemical parameters evaluated in the soil varied *** bacterial strains were selected from each polluted soil to test tolerance and growth in contaminated *** concentrations of heavy metals tested were 1,000 ppm for lead and 850 ppm for *** strains were morphologically identified through Gram *** strains showing the most significant growth in both contaminants were then selected to verify their tolerance to different concentrations of heavy *** results demonstrated that the selected bacteria have high tolerance to Pb,resisting inhibition up to 2,000 *** contrast,strains exposed to cadmium tended to slow their growth as the concentration increased.

关键词： Lead cadmium soil bacteria remediation

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Exercise benefits meet the esophagus

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Journal of Sport and Health Science 2024年第5期13卷 685-686页

作者： Alejandro Santos-Lozano pedro L.Valenzuela Carmen Fiuza-Luces Alejandro Lucia i+HeALTH European University Miguel de CervantesValladolid 47012Spain Research Institute of the Hospital 12 de Octubre(“imas12”) Madrid 28041Spain Department of Systems Biology University of AlcalaAlcala de Heranes 28801Spain Faculty of Sport Sciences Universidad Europea de MadridVillaviciosa de Odon(Madrid)28670Spain

Gastroesophageal reflux disease(GERD)is defined by recurrent and troublesome heartburn and effortless regurgitation or by the specific complications of this condition—that is,esophagitis,esophageal peptic strictures,and Barrett esophagus.1Although GERD is caused by gastric contents'reaching the esophagus,gastric juices can also reach other anatomical locations(pharynx,mouth,larynx,and airways),leading to(or worsening)extra-esophageal conditions(notably asthma)or symptoms(e.g.,wheezing,cough).1 Together with obesity,GERD is the main risk factor for gastroesophageal malignancies.

关键词： esophagus esophageal Barrett

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Acceptance of living liver donation among medical students: A multicenter stratified study from Spain

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World Journal of Gastroenterology 2016年第25期22卷 5800-5813页

作者： Antonio Ríos Ana Isabel López-Navas Ana Isabel López-López Francisco Javier Gómez Jorge Iriarte Rafael Herruzo Gerardo Blanco Francisco Javier Llorca Angel Asunsolo Pilar Sánchez-Gallegos pedro Ramón Gutiérrez Ana Fernández María Teresa de Jesús Laura Martínez-Alarcón Alberto Lana Lorena Fuentes Juan Ramón hernández Julio Virseda José Yelamos José Antonio Bondía Antonio Miguel hernández Marco Antonio Ayala Pablo Ramírez Pascual Parrilla International Collaborative Donor Project ('Proyecto Colaborativo Internacional Donante' 30007 Casillas Murcia Spain Department of Surgery Paediatrics Obstetrics and Gynaecology University of Murcia Avenida de las Fuerzas Armadas 30800 Espinardo Murcia Spain Transplant Unit Surgery Service IMIB - Virgen de la Arrixaca University Hospital Carretera Madrid-Cartagena s/n 30120 El Palmar Murcia Spain Regional Transplant Centre Consejeria de Sanidad y Consumo de la Region de Murcia 30008 Ronda de Levante Murcia Spain Hospital Clinico Universitario Virgen de la Arrixaca Departamento de Cirugia General y del Aparato Digestivo Unidad de Trasplantes 30007 Casillas Murcia Spain Department of Psychology Universidad Catolica San Antonio (UCAM) Avenida de los Jeronimos 30107 Guadalupe Murcia Spain Department of Urology San Juan University Hospital of Alicante 03010 Calle Pintor Baeza Alicante Spain Universidad de Granada Avenida del Hospicio s/n 18010 Granada Spain Universidad de Navarra Campus Universitario 31080 Pamplona Navarra Spain Universidad Autonoma de Madrid Ciudad Universitaria de cantoblanco 28049 Madrid Spain Servicio de Cirugia HBP y Trasplante Hepatico Complejo Hospitalario Universitario de Badajoz Hospital Infanta Cristina Avenida Elvas s/n 06006 Badajoz Spain Universidad de Cantabria Avenida los Castros s/n 39005 Santander Cantabria Spain Departamento de Cirugia Ciencias Medicas y Sociales Facultad de Medicina y Ciencias de la Salud Universidad de Alcala Campus Cientifico-Tecnologico Plaza de San Diego s/n 28801 Alcala de Henares Madrid Spain Facultad de Medicina Universidad de Malaga 29071 Avenida de Cervantes Malaga Spain Servicio de Urologia (Complejo Hospitalario Universitario de Canarias CHUC) y Departamento de Cirugia (Universidad de La Laguna ULL) Calle Molinos de Agua s/n 38207 San Cristobal de La Laguna Santa Cruz de Tenerife Spain Departamento de Ciencias Biomedicas Basicas Facultad de Ciencias Biomedicas Universidad Europea de

AIM: To analyze the attitude of Spanish medical students toward living liver donation (LLD) and to establish which factors have an influence on this ***: Study type: A sociological, interdisciplinary, multicenter and observational study. Study population: Medical students enrolled in Spain (n = 34000) in the university academic year 2010-2011. Sample size: A sample of 9598 students stratified by geographical area and academic year. Instrument used to measure attitude: A validated questionnaire (PCID-DVH RIOS) was self-administered and completed anonymously. Data collection procedure: Randomly selected medical schools. The questionnaire was applied to each academic year at compulsory sessions. Statistical analysis: Student´s t test, χ2 test and logistic regression ***: The completion rate was 95.7% (n = 9275). 89% (n = 8258) were in favor of related LLD, and 32% (n = 2937) supported unrelated LLD. The following variables were associated with having a more favorable attitude: (1) age (P = 0.008); (2) sex (P < 0.001); (3) academic year (P < 0.001); (4) geographical area (P = 0.013); (5) believing in the possibility of needing a transplant oneself in the future (P < 0.001); (6) attitude toward deceased donation (P < 0.001); (7) attitude toward living kidney donation (P < 0.001); (8) acceptance of a donated liver segment from a family member if one were needed (P < 0.001); (9) having discussed the subject with one’s family (P < 0.001) and friends (P < 0.001); (10) a partner’s opinion about the subject (P < 0.001); (11) carrying out activities of an altruistic nature; and (12) fear of the possible mutilation of the body after donation (P < 0.001).CONCLUSION: Spanish medical students have a favorable attitude toward LLD.

关键词： Attitude Living liver donation Medical students Transplantation Organ donation Psychosocial variables Spain

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Comment:Comments on “How to repair the Hill cipher”

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第2期9卷 211-214页

作者： Y.RANGEL-ROMERO R.VEGA-GARCíA A.MENCHACA-Méndez D.ACOLTZI-cervantes L.MARTíNEZ-RAMOS M.MECATE-ZAMBRANO F.MONTALVO-LEZAMA J.BARRóN-VIDALES N.CORTEZ-DUARTE F.RODRíGUEZ-HENRíQUEZ Computer Science Department CINVESTAV-IPN Av.IPN No. 2508 Col. San Pedro Zacatenco Mexico City 07300 Mexico

A modification of the Hill cipher algorithm was recently proposed by Ismail et al.(2006),who claimed that their new scheme could offer more security than the original one due to an extra non-linearity layer introduced via an elaborated key gen-eration *** mechanism produces one different encryption key for each one of the plaintext ***,we show in this paper that their method still has severe security flaws whose weaknesses are essentially the same as that already found in the original Hill cipher scheme.

关键词： Hill cipher Symmetric encryption Image encryption

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Canine Leptospirosis Serology in Southern Mexico City

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Open Journal of Medical Microbiology 2016年第4期6卷 171-180页

作者： Ignacio Martínez-Barbabosa Edubiel Arturo Alpizar-Sosa Dolores Guadalupe Gavaldón-Rosas Luís pedro Moles-cervantes Marcia Gutiérrez Cárdenas Rafael García-González Michael Shea Ana María Fernández-Presas Health Attention Department Human Parasitology Laboratory Universidad Autónoma Metropolitana-Xochimilco México DF México Animal and Agriculture Production Department Universidad Autónoma Metropolitana-Xochimilco México DF México Microbiology and Parasitology Department School of Medicine Universidad Autónoma de México México DF México Education and Communication Department Universidad Autónoma Metropolitana-Xochimilco México DF México

Background: Leptospirosis is an important zooanthroponotic disease spread worldwide which infection is recognized as a re-emergent disease. Leptospirosis is a systemic disease of humans and domestic animals, mainly dogs, cattle and swine, characterized by fever, renal and hepatic insufficiency, pulmonary manifestations and reproductive failure. Objective: To study the seroprevalence of anti-Leptospira antibodies in an urban canine population. Materials and Methods: The study was performed in March 2014 in stray dogs that had been captured in the districts of Coyoacan, Iztapalapa, Iztacalco and Benito Juarez in Mexico City;117 dogs were analyzed, from each of which 5 ml of blood were obtained. Serology was performed using a MAT test (Microscopic Agglutination Test), finding that the antigens corresponded to 13 serotypes of Leptospirainterrogans. Three age groups were formed: Group 1) younger than a year (n = 28), Group 2) 1 to 6 years (n = 75), and Group 3) older than 6 years (n = 14). Results: Of the analyzed sera, 28.2% were seropositive to one or more Leptospira serotypes, 74% of the positive seracoagglutinated with two or more serotypes. The most frequent serotypes were: Canicola, Icterohaemorrhagiae and Portland-vere. Serotypes Canicola, Pyrogenes, and Bratislava resulted statistically significant (p 0.001). The presence of anti-Leptospira antibodies in the blood of animals of 1 to 6 years resulted with a p 0.001. The sera from Iztapalapa reacted to nine serotypes. Conclusion: The 28.2% of seropositivity indicates Leptospira transmission in the canine population that was studied could exhibit a potential public health risk.

关键词： Leptospira Leptospirosis Canicola Icterohaemorrhagiae Dogs

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Exercise and quality of life in cancer

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Journal of Sport and Health Science 2023年第4期12卷 489-490页

作者： Carmen Fiuza-Luces pedro L.Valenzuela Alejandro Santos-Lozano Ana Ruiz-Casado Alejandro Lucia Physical Activity and Health Research Group(PaHerg) Research Institute of Hospital 12 de Octubre(‘i+12’)Madrid 28041Spain Department of Systems Biology University of AlcalaMadrid 28871Spain i+HeALTH Research Group Department of Health SciencesEuropean University Miguel de CervantesValladolid 47012Spain Department of Medical Oncology Hospital Universitario Puerta de Hierro MajadahondaInstituto de Investigacion Sanitaria Puerta de Hierro-Segovia de Arana(IDIPHISA)Madrid 28220Spain Faculty of Sport Sciences Universidad Europea de MadridMadrid 28670Spain

Historically,patients with cancer were told to avoid physical *** dogma has changed over the last 2 decades,with an exponential growth in the number of studies showing not only the safety,but also the benefits of regular physical activity/exercise in the cancer continuum,notably for attenuating treatment-related toxicities and side effects.

关键词： cancer patients showing

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Sperm Quality in Holstein Bulls Friesian and Brahmans of Frozen Semen Commercially

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Open Journal of Animal Sciences 2015年第3期5卷 229-231页

作者： Alejandro Córdova-Izquierdo Gustavo Ruiz-Lang Román Espinosa-cervantes Adrían Emmanuel Iglesias-Reyes Maximino Méndez-Mendoza Rubén Huerta-Crispín Abel Edmundo Villa-Mancera Ma. De Lourdes Juárez-Mosqueda pedro Sánchez-Aparicio Jaime Olivares-Pérez Juan Eulogio Guerra-Liera Gerardo Cansino-Arroyo Departamento de Producción Agrícola y Animal Universidad Autónoma Metropolitana Unidad Xochimilco México D.F. México Facultad de Veterinaria Benemérita Universidad Autónoma de Puebla Puebla México Departamento de Morfología FMVZ-UNAM México D.F. México Facultad de Veterinaria Universidad Autónoma del Estado de México Toluca México Unidad Académica de Medicina Veterinaria y Zootecnia Universidad Autónoma de Guerrero Guerrero México Facultad de Agronomía Universidad Autónoma de Sinaloa Culiacán México División Académica de Ciencias Agropecuarias Universidad Juárez Autónoma de Tabasco Villahermosa México

The aim of this study was to assess sperm quality (motility, viability and acrosomal integrity) sperm from commercially frozen semen straws two breeds of bulls Bos taurus (holstein Frisian) and Bos indicus (Brahman). 9 commercial straws 0.5 ml of Holstein bull semen and 9 Brahman bull were thawed, they were kept for two hours at room temperature and motility, viability and acrosomal integrity (NAR) was assessed. The results were 30% motility, viability 40% and 30% of NAR in the Holstein breed. Brahma race for motility 40%, 50% and 40% viability was obtained NAR. In conclusion, according to the results of the variables analyzed, the Brahman breed in sperm quality was better than the Holstein breed;however, the results of both races meet minimum standards of quality sperm for use in artificial insemination (AI) field level.

关键词： Semen Thawed Bulls Frozen Semen Sperm Quality

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Association between physical activity and cardiovascular risk factors:Dose and sex matter

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Journal of Sport and Health Science 2021年第5期10卷 604-606页

作者： Alejandro Santos-Lozano Alberto Torres Barran Pablo Fernandez-Navarro pedro L.Valenzuela Adrian Castillo-Garcia Luis MRuilope David Rios Insua Jose M.Ordovas Victoria Ley Alejandro Lucia i+HeALTH Department of Health SciencesEuropean University Miguel de CervantesValladolid 47012Spain Research Institute of the Hospital 12 de Octubre(imas12 PaHerg group)and(CIBER en Fragilidad y Envejecimiento Saludable-CIBEFES)Madrid 28041Spain Institute of Mathematical Sciences(ICMAT-CSIC) Madrid 28049Spain d Cancer and Environmental Epidemiology Unit National Center for EpidemiologyCarlos III Institute of HealthMadrid 28029Spain Consortium for Biomedical Research in Epidemiology&Public Health(CIBER en Epidemiologia y Salud Publica-CIBERESP) Madrid 28029Spain Department of Systems Biology University of AlcalaMadrid 28801Spain Fissac-Physiology Health and Physical ActivityMadrid 28801Spain Hypertension Unit and Cardiorenal Translational Laboratory Research Institute of the Hospital 12 de Octubre(imas12)Madrid 28041Spain Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University BostonMA 02111USA Spanish State Research Agency Ministry of ScienceInnovation and UniversitiesMadrid 28046Spain Faculty of Sport Sciences Universidad Europea de MadridMadrid 28670Spain

Dear Editor,ETadegn TagedPFailure to meet World Health Organization(WHO)-determined minimum physical activity(PA)levels is an established risk factor for cardiovascular disease(CVD),^(1)but evidence is still scarce on its effects on other CVD risk ***,whether or not there are sex-specific effects on the association between PA and CVD risk is a matter of controversy,with some authors observing a protective effect of PA in men but not in women,^(2)and others finding the opposite trend.^(3)

关键词： cardiovascular protective finding

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