La situación actual del stock de merluza a setiembre de 1978

Analiza la información disponible desde 1967 hasta 1978 actualizando los cálculos de la producción potencial hasta agosto de 1978, la información de las estadísticas de captura y esfuerzo de la flota arrastrera y de la flota bolichera que capturó en el área de Chimbote; así como los datos obtenidos por el TAREQ II en el Crucero 7805 y la Operación Eureka XL, realizado entre 19 y 21 de julio de 1978.

Situación del recurso merluza y sus características biológicas en la primavera de 1978 crucero 7811-II TAREQ II (18 de octubre - 8 de noviembre 1978)

Evalúa el stock de la merluza y de otros recursos dermesales, determina la intensidad del desove y la distribución del stock reproductivo, así como las condiciones ambientales que están influyendo en la distribución y concentración del recurso.

Photoinhibition of photosynthesis in natural assemblages of marine phytoplankton

estudia la fotosÍntesis en el fitoplancton, como función unica y continua de luz disponible, desde la respuesta linear inicial hasta la inhibición extrema

Rosalía de Castro, sombra que se fai teoría

A figura auroral de Rosalía de Castro autorizou a aparición de novas poetas a finais do século XX mais, paradoxalmente, a partir da publicación dos seus libros fundacionais non xurdiu unha lexión de autoras que desde Cantares gallegos (1863) e Follas novas (1880) escribisen incesantemente a nación, ou simplemente, escribisen incesantemente en galego e tivesen por iso un recoñecemento canónico. Sen dúbida a intervención do patriarcadogaleguista provocou esa interrupción, que se entende mellor cando se teñenen conta os condicionantes socioliterarios que coutaban as mulleres escritoras (González Fernández, 2005: 15-19). Porque a finais do século XIX, e malia excepcións rechamantes, o pensamento hexemónicoconsideraba que as literatas eran unhas sabias ridículas, tal como sesancionara desde o coñecido capítulo V do Émile, ou l’Education (1762) deJean Jacques Rousseau en diante, aínda que houbese, por suposto, vocesdisidentes entre os seus contemporáneos, como Benito Jerónimo Feijoo noseu moi lido discurso XVI, Defensa de las mujeres, do seu Teatro crítico universal(1726). Nese sentido depreciativo do termo debe lerse o coñecido artigo deRosalía de Castro, Las literatas. Carta a Eduarda (1865). Por outra banda, noemerxente discurso nacionalista que vai do XIX ao primeiro terzo do XXopérase unha corrección misóxina que afecta á concepción sexuada danación. Se Murguía seguira a Renan na súa defensa do carácter esencialmente feminino dos pobos celtas, unha idea moi espallada naquela...

Rosalía de Castro, sombra que se fai teoría

A figura auroral de Rosalía de Castro autorizou a aparición de novas poetas a finais do século XX mais, paradoxalmente, a partir da publicación dos seus libros fundacionais non xurdiu unha lexión de autoras que desde Cantares gallegos (1863) e Follas novas (1880) escribisen incesantemente a nación, ou simplemente, escribisen incesantemente en galego e tivesen por iso un recoñecemento canónico. Sen dúbida a intervención do patriarcadogaleguista provocou esa interrupción, que se entende mellor cando se teñenen conta os condicionantes socioliterarios que coutaban as mulleres escritoras (González Fernández, 2005: 15-19). Porque a finais do século XIX, e malia excepcións rechamantes, o pensamento hexemónicoconsideraba que as literatas eran unhas sabias ridículas, tal como sesancionara desde o coñecido capítulo V do Émile, ou l’Education (1762) deJean Jacques Rousseau en diante, aínda que houbese, por suposto, vocesdisidentes entre os seus contemporáneos, como Benito Jerónimo Feijoo noseu moi lido discurso XVI, Defensa de las mujeres, do seu Teatro crítico universal(1726). Nese sentido depreciativo do termo debe lerse o coñecido artigo deRosalía de Castro, Las literatas. Carta a Eduarda (1865). Por outra banda, noemerxente discurso nacionalista que vai do XIX ao primeiro terzo do XXopérase unha corrección misóxina que afecta á concepción sexuada danación. Se Murguía seguira a Renan na súa defensa do carácter esencialmente feminino dos pobos celtas, unha idea moi espallada naquela...

In vitro evaluation of the temperature increment at the external root surface after Er,Cr: YSGG laser irradiation of the root canal

Objectives: A study was made to determine the temperature increment at the dental root surface following Er,Cr:YSGG laser irradiation of the root canal. Design. Human canines and incisors previously instrumented to K file number ISO 30 were used. Irradiation was carried out with glass fiber endodontic tips measuring 200 μm in diameter and especially designed for insertion in the root canal. The teeth were irradiated at 1 and 2 W for 30 seconds, without water spraying or air, and applying a continuous circular movement (approximately 2 mm/sec.) in the apico-coronal direction. Results: At the 1 W power setting, the mean temperature increment was 3.84ºC versus 5.01ºC at 2 W. In all cases the difference in mean value obtained after irradiation versus the mean baseline temperature proved statistically significant (p< 0.05). Conclusions: Application of the Er,Cr:YSGG laser gives rise to a statistically significant temperature increment at the external root surface, though this increment is probably clinically irrelevant, since it would appear to damage the tissues (periodontal ligament and alveolar bone) in proximity to the treated tooth

Complications of guided surgery and immediate loading in oral implantology: a report of 12 cases

Objectives: The growing interest in minimally invasive surgery, together with the possibility of fitting prostheses with immediate function, have led to the development of software capable of planning and manufacturing a surgical guide and prosthesis that can be placed upon conclusion of the implant surgery step. The present study evaluates the surgical and prosthetic complications of implant treatment with the guided surgery technique, together with patient comfort during and after treatment. Patients and methods: A retrospective observational study was made of 19 patients with partially or totally edentulous upper and/or lower maxillae, involving the placement of a total of 122 implants. All cases were planned and operated upon with the guided surgery technique. Results: A total of 122 implants were placed in 14 males and 5 females. The intraoperative surgical complications comprised a lack of primary stability, while the postoperative complications consisted of infections and a lack of implant osteointegration. Ten implants failed. The prosthetic complications in turn comprised loosening of the provisional prosthesis screws, prosthesis tooth fracture, and a lack of passive fit of the immediate prosthesis. The degree of patient satisfaction was evaluated using a verbal scale. Conclusions: Implant restoration with the guided surgery technique and immediate functional loading is a predictable procedure, provided patient selection and the surgical technique are adequate, affording lesser postoperative morbidity and increased patient satisfaction thanks to the immediate restoration of esthetics and function

Use of Bichat"s buccal fat pad for the sealing of orosinusal communications. A presentation of 8 cases

Objectives: To determine the efficacy of the pediculate flap with the buccal fat pad in the sealing of orosinusal communications, describe the surgical technique used, and report the main complications. Patients and method: A retrospective study was made of 8 patients seen in the Service of Oral Surgery of the University of Barcelona Dental Clinic (Spain) for the treatment of orosinusal communications between the years 2007 and 2009. In all cases a pediculate flap with the buccal fat pad was used to solve the problem. Results: All of the orosinusal communications were successfully resolved with this technique. The immediate postoperative complications were pain (37.5%), inflammation (37.5%), edema (32.5%), trismus (37.5%), halitosis (14.3%), suppuration (12.5%) and rhinorrhea (12.5%). Conclusions: The use of Bichat"s buccal fat pad is not regarded as the technique of choice for sealing small to medium sized orosinusal communications. However, in the case of large communications, it is a good option, and the results obtained are optimum.

Influence of physical damage and freezing on histamine concentration and microbiological quality of yellowfin tuna during processing

Yellowfin tuna has a high level of free histidine in their muscle, which can lead to histamine formation by microorganisms if temperature abuse occurs during handling and further processing. The objective of this study was to measure levels of histamine in damaged and undamaged thawed muscle to determine the effect of physical damage on the microbial count and histamine formation during the initial steps of canning processing and to isolate and identify the main histamine-forming microorganisms present in the flesh of yellowfin tuna. Total mesophilic and psicrophilic microorganisms were determined using the standard plate method. The presence of histamine-forming microorganisms was determined in a modified Niven's agar. Strains were further identified using the API 20E kit for enterobacteriaceae and Gram-negative bacilli. Physically damaged tuna did not show higher microbiological contamination than that of undamaged muscle tuna. The most active histamine-forming microorganism present in tuna flesh was Morganella morganii. Other decarboxylating microorganisms present were Enterobacter agglomerans and Enterobacter cloacae. Physical damage of tune during catching and handling did not increase the level of histamine or the amount of microorganisms present in tuna meat during frozen transportation, but they showed a higher risk of histamine-forming microorganism growth during processing.

Evaluation of some residual bioactivities of microencapsulated Phaseolus lunatus protein fraction with carboxymethylated flamboyant (Delonix regia) gum/sodium alginate

Recent studies have shown the beneficial effect of peptides, an unexploited source could be Phaseolus lunatus being an important raw material for those functional products in order to improve their utilization. In addition to improve the beneficial effect of bioactive peptides the microencapsulation could be a way to protect the peptides against the environment to which they are exposed. P. lunatus protein fraction (<10 kDa of weight) was encapsulated using a blend of carboxymethylated flamboyant gum (CFG) and sodium alginate (SA) at different concentrations of CaCl2 and hardening times. After in vitro digestion of microcapsules the residual activity, in the intestinal system, both inhibition of agiotensin-converting enzyme (I-ACE) and antioxidant activity obtained were in a range of 0.019-0.136 mg/mL and 570.64-813.54 mM of TEAC respectively. The microencapsulation employed CFG/SA blends could be used controlled delivery of peptide fractions with potential use as a nutraceutical or therapeutic agents.

Efecto de las condiciones superficiales del pavimento, en la capacidad vial de las carreteras multicarriles.

Tesis (Maestría en Ingeniería de Transito) UANL

Producción y toxicidad de cepas nativas de bacillus thuringiensis en diferentes medios de cultivo para control de insectos, plaga lepidopteros

Tesis (Maestría en Ciencias con Especialidad en Microbiología Industrial) UANL

Representaciones sociales y prácticas de género en los actores de violencia conyugal

Tesis (Maestría en Ciencias con Orientación en Trabajo Social) UANL

Uso del programa Delta para el estudio de los hongos Aphyllophoralesno poroides de México

Tesis (Maestría en Ciencias Forestales) UANL

Actividad y regeneración catalítica en la alquilación del tolueno sobre una zeolita natural tipo clinoptilolita

Tesis (Maestría en Ciencias con Especialidad en Ingeniería Cerámica) U.A.N.L.