La liseta Mugil curema está entre las principales especies que explota la pesquería artesanal en costa mexicana del Océano Pacífico. Abordar aspectos reproductivos de por zona pesca reducirá el sesgo evaluación estado sus poblaciones. El objetivo presente estudio fue describir ciclo reproductivo y estimar algunos parámetros biológicos dos sitios Baja California Sur. Mensualmente, se muestreo ca...

Information regarding the reproductive cycle of commercially exploited fish species is extremely important for their appropriate management. The reproductive size of Pinirampus pirinampu (Spix, 1829) was determined for a population studied in the Pantanal wetlands of western Brazil. Samples were taken in September, October, and December 1997, and in February and March 1998. Gonadal stages were ...

Background: Nowadays, radiotherapy is used effectively for treatment of head and neck cancers. Mucositis is one of the most important side effects of radiotherapy. Radio-protective agents protect tissues and cells against the adverse effects due to ionizing radiation and cleave radiation-induced free radicals. Lycopene as a potent antioxidant protects cells against oxidative damage by free radi...

Size at first sexual maturity (L50) represents an important life history trait in the development of management measures providing fundamental information to avoid exploitation younger individuals. L50 is known display variability due fishing pressure, geographical gradient and environmental features. In this study, order investigate among areas Mediterranean Black Sea, ogives anchovy (Engrauli...

Laffont and Tirole’s [Using cost observation to regulate firms, J. Polit. Econ. 94 (1986) 614–641] pioneering analysis identifies the optimal procurement contract when the supplier can readily inflate his innate production cost without detection.When the buyer has some ability to limit such cost inflation, an alternative contract can outperform the contract identified by Laffont and Tirole. The...

When fixed, sunk investment costs are high, firms may not have sufficient incentive to enter the market unless future entry is constrained. In this case, the government faces a dilemma between a full commitment and noncommitment of restricted future entry. A way out is to consider a commitment conditional on the realization of the uncertain parameters, such as the trigger-point mechanism (TPM) ...

The use of a constant discount rate to study long-lived environmental problems such as global warming has two disadvantages: the prescribed policy is sensitive to the discount rate, and with moderate discount rates, large future damages have almost no effect on current decisions. Timeconsistent quasi-hyperbolic discounting alleviates both of these modeling problems, and is a plausible descripti...

The aim of this paper is to study the probability to find an opportunity of collaboration among small and medium sized firms by participating in the Europartenariat meeting created to encourage co-operation links. Contacts among firms are relatively few in number and are assumed to be generated by a Poisson process. Empirical results of different Poisson regression models with reference to para...

We report here the complete genome sequence of Enterococcus faecium strain ICIS 96, which was isolated from the feces of a horse. Bacteriological characterization of strain ICIS 96 revealed the absence of pathogenicity factors, while its spectrum of antagonistic activity was found to be broad, having activities associated with both Gram-positive and Gram-negative bacteria. Analysis of the E. fa...

This paper studies the efficient pricing of termination services for calls that are made to Internet service providers (ISPs). A model is presented in which an incumbent phone network is obligated to provide local calls at a regulated per-minute price while entrant carriers compete to terminate ISP-bound calls. This model is used to understand the problems of regulatory arbitrage that arise whe...