Search results for "AMPT"
showing 4 items of 114 documents
Modeling the probability distribution of peak discharge for infiltrating hillslopes
2017
Hillslope response plays a fundamental role in the prediction of peak discharge at the basin outlet. The peak discharge for the critical duration of rainfall and its probability distribution are needed for designing urban infrastructure facilities. This study derives the probability distribution, denoted as GABS model, by coupling three models: (1) the Green-Ampt model for computing infiltration, (2) the kinematic wave model for computing discharge hydrograph from the hillslope, and (3) the intensity-duration-frequency (IDF) model for computing design rainfall intensity. The Hortonian mechanism for runoff generation is employed for computing the surface runoff hydrograph. Since the antecede…
Runoff coefficients to predict peak discharge at hillslope scale: A small contribution to theoretical hydrology
2018
The science of hydrology holds a central role in the field of environmental Earth science, being intimately connected to meteorology, climatology, hydrogeology and ecology. In particular, the knowledge of hillslope hydrology is fundamental for understanding the flood phenomenon, for predicting the peak discharge and its probability distribution, which is necessary in many practical applications (design of hydraulic structures, urban, extra-urban planning, etc.). Using different approaches, there have been a multitude of studies on the hydrologic response at hillslope scale. One approach for deriving the hillslope response utilizes, in a distributed form, the differential equations of unstea…
Fermentācijas gāzu analīze izmantojot automātisko metāna potenciāla mērīšanas sistēmu
2015
Darbā analizētas anaerobās fermentācijas gāzes, izmantojot automātisko metāna potenciāla mērīšanas sistēmu. Salīdzināta tehniskā un analītiskā glicerīna izmantošana par substrātu. Izmantojot automātisko metāna potenciāla mērīšanas sistēmu AMPTS II, tika reģistrēts ne tikai metāns, bet gan visu gāzu kopīgais tilpums, izņemot CO2, tādēļ veiktas papildus analīzes gāzu sastāva noteikšanai, izmantojot gāzu hromatogrāfiju – masspektrometriju. Noskaidrots, ka Enterobacter aerogenes nozīmīgi palielināja ūdeņraža saturu tehniskā glicerīna fermentācijas gāzēs. Analītiskā glicerīna fermentācijā tika iegūts par 37 līdz 211 % vairāk gāzes nekā tehniskā glicerīna fermentācijā līdzīgos apstākļos. Anaerobā…
MTOR inhibitor-based combination therapies for pancreatic cancer
2018
Background: Although the mechanistic target of rapamycin (MTOR) kinase, included in the mTORC1 and mTORC2 signalling hubs, has been demonstrated to be active in a significant fraction of patients with pancreatic ductal adenocarcinoma (PDAC), the value of the kinase as a therapeutic target needs further clarification. Methods: We used Mtor floxed mice to analyse the function of the kinase in context of the pancreas at the genetic level. Using a dual-recombinase system, which is based on the flippase-FRT (Flp-FRT) and Cre-loxP recombination technologies, we generated a novel cellular model, allowing the genetic analysis of MTOR functions in tumour maintenance. Cross-species validation and pha…