Results 11 to 20 of about 219 (132)

Investigation and evaluation of carbon dioxide emissions from soil in Neris Regional Park / Anglies dvideginio emisijų iš dirvožemio neries regioniniame parke tyrimai ir vertinimas /

Journal of Environmental Engineering and Landscape Management, 2011
Soils release around 20% of the total CO2 content to the atmosphere; consequently, forest and agricultural ecosystems have a big influence on CO2 balance.
Pranas Baltrėnas, Mantas Pranskevičius, Arvydas Lietuvninkas   +2 more
doaj   +2 more sources

Estimation of otoacoustic emision signals by using synchroneous averaging method / Otoakustinės emisijos signalų įvertinimas panaudojant sinchroninį vidurkinimą

Mokslas: Lietuvos Ateitis, 2011
The study presents the investigation results of synchro­nous averaging method and its application in estimation of impulse evoked otoacoustic emission signals (IEOAE). The method was analyzed using synthetic and real signals.
Linas Sankauskas, Andrius Petrėnas, Vaidotas Marozas   +2 more
doaj   +2 more sources

Bellman – Ford method for solving the optimal route problem / Optimalaus maršruto nustatymas taikant Belmano ir Fordo metodą

Mokslas: Lietuvos Ateitis, 2014
The article aims to adapt the dynamic programming method for optimal route determination using real-time data on ITS equipment. For this purpose, VBA code has been applied for solving the Bellman - Ford method for an optimal route considering optimality ...
Laima Greičiūnė
doaj   +2 more sources

Comparative research into multicomponent Camelina sativa and rapeseed methyl ester biofuels / Daugiakomponenčių Camelina sativa ir rapso metilesterio biodegalų palyginamieji tyrimai [PDF]

Mokslas: Lietuvos Ateitis, 2012
The article presents the results of comparative motor research on FAME biofuels using diesel engine VALMET 320 DMG. Energy (ηe, be) and environmental parameters (CO2, CO, NOx, HC, SM) of the engine were estimated. The obtained data on motor research into
Justas Žaglinskis, Paulius Rapalis, Vygintas Daukšys   +2 more
doaj   +3 more sources

Three component fuel mixture containing diesel–biodiesel–propanol aplication in the diesel engine

Mokslas: Lietuvos Ateitis, 2010
The article analyses three-component fuel consisting of diesel–biodiesel–propanol mixture used in the diesel engine. The choice of fuel combinations was as follows: 20% of diesel, 70% of biodiesel (RME basis) and 10% of propanol while the second mixture ...
Jonas Matijošius, Marius Mažeika, Alfredas Rimkus   +2 more
doaj   +2 more sources

The method NNM and its application in a sozoeconomic analysis of the process realization within a cycle of a building structure/Skaitmeninio tinklo modeliavimo (STM) metodas ir jo taikymas socoekonominei statybos objekto realizayimo analizei

Journal of Civil Engineering and Management, 1999
Metodas, vadinamas STM (angl. NNM), taikomas analizuojant, planuojant ir kontroliuojant sudėtingus, tarpusavyje susijusius procesus, vykstantys besikeičiančioms sąlygoms, per daugelį metų įgyja skirtingų ypatybių. STM tinklas turi dviejų punktų struktūrą.
Andrzej Więckowski
doaj   +2 more sources

Acoustically assessed influence of air pore structure on failure of self-compacting concretes under compression / Akustiškai įvertinta oro porų struktūros įtaka susitankinančio betono susilpnėjimui veikiant gniuždymui

Journal of Civil Engineering and Management, 2012
The paper presents the results of investigations into the influence of pore structure on the failure of self-compacting concretes modified with superplasticizers commonly used in construction.
Tomasz Gorzelańczyk
doaj   +2 more sources

Optimisation of building energy system technology configuration using multi-criteria decision making methods / Daugiakriterių metodų taikymas racionaliam pastato energetinės sistemos technologijų deriniui nustatyti

Mokslas: Lietuvos Ateitis, 2013
This article presents the evaluation and optimization algorithm of the building energy system. Two main objectives have been achieved: the optimal configuration of the building energy system has been defined, which minimizes the use of non-renewable ...
Rasa Džiugaitė-Tumėnienė, Milena Medineckienė   +1 more
doaj   +2 more sources

Evaluation of N2O emissions by DNDC model for sandy loam soils of danubian lowland [PDF]

Journal of Environmental Engineering and Landscape Management, 2006
Except for food production the sector of agriculture contribute significantly to emissions of some Greenhouse gases (GHGs), especially N2O. Agricultural practices (especially increase of N consumption in the sector) are now recognized as a major factor ...
Ján Horák, Bernard Šiška
doaj   +2 more sources

Evaluation of Life Cycle Assessment (LCA) and sound absorption properties of composite materials made from coconut and sugarcane fibers

Mokslas: Lietuvos Ateitis
Agriculture plays a crucial part in the economic growth of several developing nations; however, it creates 1,300 million tons of waste each year, which generates environmental issues.
Nuushuun Archie Gboe, Raimondas Grubliauskas   +1 more
doaj   +2 more sources