Se presentan los datos de recolecta de cuatro nuevos registros de arañas para el estado de Guanajuato: Argiope argentata (Fabricius 1775), Castianeira dorsata (Banks 1898), C. plorans (O.P.Cambridge 1898) y Selenops gracilis Muma 1953. Adicionalmente, se proporcionan algunos datos de…

The Kumamoto oyster, Crassostrea sikamea, starts gametogenesis as young as 71 days old from spawning (35 days from post-settlement) with a mean shell height of 3.0 mm. This information constitutes a new record in age-size for gametogenesis in oysters for…

Analytic approximants for the eigenvalues of the one-dimensional Schrödinger equation with potentials of the form V(x) = xª + λx b are found using a multi-point quasi-rational approximation technique. This technique is based on the use of the power series…

Current-voltage dependence in In2O3-SrO ceramics contains a region where the current is increased weaker than the voltage. Such behavior is observed in oxygen atmosphere and is not registered in an inert one. Nonlinear current-voltage dependence is explained in terms of…

Through the use of non-destructive optical techniques to measure surfaces with high accuracy, a Mach-Zehnder Radial-Shear interferometer (MZRI) was implemented to analyze the radial slope of phase objects using simultaneous phase-shifting interferometry (SPSI). This optical configuration allows one to simultaneously…

Smoker's craving is one of the most important problems in tobacco cessation treatment. The aim of this study was to elaborate a self report questionnaire to assess smoking urge. Development process was carried out in two parts: construction of items…

Silver nanospheres were transformed into triangular nanoprisms and nanodisks via a photoinduced growth process. In order to show the citrate ion concentration effect, the silver nanospheres were prepared in three different silver/citrate ratios (1:1, 1:2 and 1:3). The photoinduced shape…

We put to the test an effective three-dimensional electrostatic potential, obtained effectively by considering an electrostatic source inside a (5+p)-dimensional braneworld scenario with p compact and one infinite spacial extra dimensions in the RS II-p model, for p = 1…

In this contribution we propose a new fractional differential equation to describe the mechanical oscillations of a simple system. In particular, we analyze the systems mass-spring and spring-damper. The order of the derivatives is 0 < γ ≤ 1. In…

OBJECTIVE: This paper explores the impact of contextual variables at the neighborhood level on a health marker in the city of Hermosillo, Mexico and discusses the importance of collaboration between planners and health professional to minimize the negative effect of…