Search results for "ogas"

A Fly-Inspired Mushroom Bodies Model for Sensory-Motor Control Through Sequence and Subsequence Learning

2016

Classification and sequence learning are relevant capabilities used by living beings to extract complex information from the environment for behavioral control. The insect world is full of examples where the presentation time of specific stimuli shapes the behavioral response. On the basis of previously developed neural models, inspired by Drosophila melanogaster, a new architecture for classification and sequence learning is here presented under the perspective of the Neural Reuse theory. Classification of relevant input stimuli is performed through resonant neurons, activated by the complex dynamics generated in a lattice of recurrent spiking neurons modeling the insect Mushroom Bodies n…

Claves de la Intervención en drogodependencias con la comunidad gitana desde el plan municipal sobre drogas de León

2003

Se presenta en este artículo el trabajo preventivo realizado con la comunidad gitana desde el Plan Municipal sobre Drogas de León, tras varios años de experiencia. En todo contexto cultural diferenciado existen pautas culturales, percepciones de la realidad, interacciones internas, formas de entender y afrontar los problemas que, pudiendo ser recursos muy válidos para el desarrollo de la intervención profesional, pueden conver¬tirse en barreras infranqueables si se actúa sin conocerlas o menospreciando su importancia.El trabajo de un Educador gitano dentro del equipo de intervención resulta clave a la hora de adaptar las intervenciones y los recursos para acceder a la comunidad gitana al mi…

Effects of temperature on post-methanation of digested dairy cow manure in a farm-scale biogas production system.

2003

A post-methanation process that could be adopted at farm-scale, operating at temperatures prevailing in farm manure digester post-storage tanks, was evaluated. Digested manure samples from a farm digester (35 degrees C) and post-storage tank (5-10 degrees C) were incubated in parallel batches at 5-20 degrees C and as reference at 35 and 55 degrees C. Specific methane yields (kg(-1) volatile solids (VS)(added waste)) were 0.20-0.26 m3 at 35-55 degrees C and 0.085-0.09 m3 at 10-20 degrees C for digester material (345 days of incubation) and 0.16-0.21 m3 at 35-55 degrees C, 0.053-0.087 kg(-1) VS(added waste) m3 at 15-20 degrees C and 0.026 m3 at 10 degrees C for post-storage tank material (250…

Perfil del consumidor/a de drogas por vía parenteral que acude al Centro de información y prevención del SIDA (CIPS) y ETS de la provincia de Alicante

2002

Los GlPS se integran dentro del proceso de asesoramiento sobre la infección por VlH, ETS y otras patologías infecciosas. La continuidad de este servicio en Alicante desde 1987 permite realizar estudios descriptivos con análisis de la temporalidad, proporcionando información valiosa sobre la evolución de las personas con esta práctica de riesgo (CDVP). En el presente trabajo se indican los objetivos, material y métodos empleados y los resultados del periodo 1988-2001. Se constata un incremento del uso compartido de jeringuillas, que puede indicar un aumento futuro de infecciones por VlH, hecho que puede incidir a su vez en la transmisión sexual de la infección dado el escaso uso del preserva…

Análisis de aguas residuales con fines epidemiológicos: aplicaciones a la estimación del consumo de sustancias de abuso y en salud pública en general…

2018

[ES] En este artículo se presenta la metodología de análisis de aguas residuales con fines epidemiológicos (wastewater-based epidemiology, WBE) y su potencial para abordar diversos aspectos relacionados con la salud pública. Esta metodología permite obtener datos a una escala temporal y espacial relativamente pequeña (típicamente datos diarios-semanales sobre un municipio) de hábitos de consumo de sustancias de abuso, ilegales (como la cocaína o el cannabis) o legales (como el alcohol) a través de la determinación de biomarcadores de consumo (el compuesto original no metabolizado o alguno de sus metabolitos) en el agua residual. Aparte de discutir los fundamentos, ventajas y limitaciones de…

Innovative Educational Program for Biogas Production Carried Out at University of Hradec Králové (CZ) and at University of Opole (PL)

2016

Abstract Recently, there is a growing pressure on a rapid construction of agricultural biogas plants, particularly in the Czech-Polish border region. It is an area with large expanses of agricultural land which can serve to supply biogas plants with biomass. This strategy should contribute to harmonize the common agricultural policy of the European Union. A need for qualified operators of these stations on this territory is also increasing. Therefore we first include a demonstration of an education program for students in the field of agricultural waste anaerobic fermentation and biogas production. We present here the first part of an innovative approach which we use in the teaching program…

Data from: Cuticular hydrocarbons as potential mediators of cryptic species divergence in a mutualistic ant association

2019

Upon advances in sequencing techniques, more and more morphologically identical organisms are identified as cryptic species. Often, mutualistic interactions are proposed as drivers of diversification. Species of the Neotropical parabiotic ant association between Crematogaster levior and Camponotus femoratus are known for highly diverse cuticular hydrocarbon (CHC) profiles, which in insects serve as desiccation barrier but also as communication cues. In the present study we investigated the association of the ants’ CHC profiles to genotypes and morphological traits, and discovered cryptic species pairs in both genera. To assess putative niche differentiation between the cryptic species, we c…

2013

Parasitic, commensalistic, and mutualistic guests in social insect colonies often circumvent their hosts’ nestmate recognition system to be accepted. These tolerance strategies include chemical mimicry and chemical insignificance. While tolerance strategies have been studied intensively in social parasites, little is known about these mechanisms in non-parasitic interactions. Here, we describe a strategy used in a parabiotic association, i.e. two mutualistic ant species that regularly share a common nest although they have overlapping food niches. One of them, Crematogaster modiglianii, produces an array of cuticular compounds which represent a substance class undescribed in nature so far. …

Feasibility study of biogas project development: technology maturity, feedstock, and utilization pathway

2023

Screening boreal energy crops and crop residues for methane biofuel production

2008

Abstract The purpose of the study was to screen potential boreal energy crops and crop residues for their suitability in methane production and to investigate the effect of harvest time on the methane production potential of different crops. The specific methane yields of crops, determined in 100–200 d methane potential assays, varied from 0.17 to 0.49 m 3  CH 4  kg −1 VS added (volatile solids added) and from 25 to 260 m 3  CH 4  t ww −1 (tonnes of wet weight). Jerusalem artichoke, timothy-clover grass and reed canary grass gave the highest potential methane yields of 2900–5400 m 3  CH 4  ha −1 , corresponding to a gross energy yield of 28–53 MWh ha −1 and ca. 40,000–60,000 km ha −1 in pas…