Search results for "ogas"
showing 10 items of 902 documents
Energy efficient model for biogas production in farm scale
2011
Energy efficient solutions for six farm biogas production was found by calculating mass and energy balance in different scenarios. Raw materials in biogas production were cow manure and grass silage that were produced in these farms. There were calculated mass and energy balances on average for one year biogas prouduction that consisted of grass silage production, raw material transportation and biogas production in the biogas plant. In addition, direct greenhouse gases from biogas production were estimated. The direct mass and energy flows were calculated. It turned out that one input energy unit can produce 5.0 to 5.5 energy units as heat and electricity. Biogas reactor consumed heat from…
Evaluation of biogas production and usage potential
2016
The aim of the research is the development of theoretical and methodical bases for determining the feasibility of plant raw materials growing for its further bioconversion into energy resources and tec hnological materials to maximize profit from business activities. Monograph, statistics, modelling and abstract logical methods have been used during the research. Directions of biogas usage have been examined. Biogas yields from different crops have been analyzed. It has been determined that high methane yields can be provided from root crops, grain crops, and several green forage plants. So, forage beet and maize can provide more than 5,500 m3 of biogas per hectare. Attention is paid to the…
Perforación en bóveda palatina por consumo de cocaína
2006
El consumo de cocaína va en aumento en la población mundial, los efectos del consumo de esta droga pueden ocasionar efectos secundarios. Se presenta un caso de paciente femenino de 48 años de edad que presenta una úlcera crónica buco-nasal de 2 meses de evolución, la cual le ocasiona problemas para la deglución y fonación. Se discuten la etiopatogenia, diagnóstico diferencial y tratamiento Worldwide, the use of cocaine has an increased over the years, various secondary effects have been described. Here we present a 48 years old female with a 2-month evolution bucconasal ulcer in the hard palate induced by cocaine usage accompanied by swallow and phonation dysfunctions. Ethiopathogenesis, di…
Biogas production from high-yielding energy crops in boreal conditions
2013
Características de los vecindarios y la distribución espacial de problemas sociales en la ciudad de Valencia
2018
The aim of this doctoral thesis is to explore the influence of neighborhood-level variables on the spatial and spatio-temporal distribution of different social problems in the city of Valencia. In Study 1, we present data on the development and validation of an observational instrument to assess neighborhood disorder. Results supported a three-factor model (physical disorder, social disorder and physical deterioration), and they showed good reliability and validity evidences. In Study 2, we assess the psychometric properties of a neighborhood disorder scale using Google Street View. Results supported a bifactorial solution with a general factor (general neighborhood disorder) and two specif…
Mikro- un makroelementu saturs pārtikas kultūraugos Rīgas mazdārziņos
2016
Mikro- un makroelementu saturs ir nozīmīgs pārtikas kultūraugu (augļu, ogu un dārzeņu) uzturvērtības rādītājs. Vairāki ķīmiskie elementi (piemēram, As, Cd, Hg, Pb u.c.) ir zināmi kā vides piesārņotāji un arī var nonākt pārtikas kultūraugos no vides, tādējādi ietekmējot to drošību un kvalitāti. Elementu koncentrāciju var ietekmēt dažādi faktori, piemēram, dārzeņu un augļu audzēšanas paņēmieni tādi kā mēslojuma un agroķīmijas izvēle, vides ietekmes – augsnes, ūdens, gaisa piesārņojums. Darba gaitā tika ievākti dārzeņu un ogu paraugi, kas audzēti mazdārziņos Rīgas teritorijā ar mērķi analizēt mikro- un makroelementu koncentrāciju. Paraugos tika noteikta makroelementu (K, Ca, Mg, Fe, Na) un mik…
(A,B) In vivo GCaMP6f signals recorded in layers M1, M5 and M9/10 of Mi1 (A) and Tm3 (B) neurons, before (blue, green) and after (gray, red) applicat…
2019
Sensory systems sequentially extract increasingly complex features. ON and OFF pathways, for example, encode increases or decreases of a stimulus from a common input. This ON/OFF pathway split is thought to occur at individual synaptic connections through a sign-inverting synapse in one of the pathways. Here, we show that ON selectivity is a multisynaptic process in the Drosophila visual system. A pharmacogenetics approach demonstrates that both glutamatergic inhibition through GluClα and GABAergic inhibition through Rdl mediate ON responses. Although neurons postsynaptic to the glutamatergic ON pathway input L1 lose all responses in GluClα mutants, they are resistant to a cell-type-specifi…
The role of microbial ecology during biogas production from renewable energy sources. Characterizing microbial community structures in bioenergy prod…
2019
La Microbiología tiene un rol fundamental en la integración de procesos para la recuperación de nutrientes, energía y agua durante el tratamiento biológico del agua residual. La identificación de los grupos microbiológicos clave, así como de sus dinámicas, ecología y estructuras microbianas, mejorará el entendimiento de los procesos que integran las futuras plantas de recuperación de recursos, conocidas por sus siglas en inglés como Water Resource Recovery Facilities (WRRF). Este conocimiento podría ser de gran utilidad durante la optimización de sistemas anaerobios que recuperan energía a partir de fuentes de biomasa renovables. Hasta la fecha, diferentes estudios han demostrado que la com…
Microgastrinae (Hymenoptera: Braconidae) in the Forest State of Artikutza (Navarra: Spain): Diversity and Community Structure
2013
Microgastrinae is one of the largest subfamilies of the Braconidae with about 2,000 described species worldwide. These wasps are of enormous ecological interest due to their role in controlling the caterpillar populations. This study analyses diversity and community structure within the Microgastrinae in the Artikutza Forest, located in the Peñas de Aia Natural Park, western Pyrenees, Spain. The specimens were collected in two different habitats: mixed forest and beech forest. A total of 524 specimens, belonging to nine separate genera and 27 species were captured. Alpha, beta and gamma diversity were analyzed. Additionally, the relationship between Microgastrinae phenology and climatic con…
Neiromediatora serotonīna ietekme uz augļu mušu (Drosophila melanogaster) kustību lateralitāti
2022
Augļu mušu (Drosophila melanogaster) depresīvā uzvedības modeļa izpēte ar y-tipa labirinta metodi, var palīdzēt saprast depresīvās uzvedības pamatelementus. Augļu mušas ir labi pazīstams un plaši pielietojams modeļobjekts bioloģijas nozares pētījumos, ir zināms, ka serotonīna sintēzes cikls ir evolucionāri konservatīvs, līdzīgs visiem dzīvniekiem, tāpēc ir svarīgi apzināties kādus ķīmiskos līdzekļus vislabāk pielietot tālakos uzvedības pētījumos. Darba mērķis ir izpētīt vai selektīvie serotonīna inhibitori ietekmē augļu mušu Oregon R kustību lateritāti. Kopā pētījumā analizēti, selektīvā serototonīna atpakaļpiesaistes inhibitora escitaloprāma un, vielas ar antidepresīvām īpašībām, triptofān…