Results 11 to 20 of about 574,030 (189)

Influence of Small Furnaces Construction Type on TSP Emissions During Wood and Brown Coal Combustion [PDF]

open access: yesTransactions of the VŠB-Technical University of Ostrava, Mechanical Series, 2011
Solid fuel burning household heat sources are considered to be significant producers of total suspended particulates (TSP). In the year 2005, c. 35% of the total particulate matter emissions PM10 (in The Czech Republic) came out from household heating [1]
Jiří HORÁK   +2 more
doaj   +1 more source

The Economic Efficiency of Coffee Growers in the Department of Caldas, Colombia

open access: yesEconomies, 2023
This work evaluates the economic efficiency of coffee growers and the decision-making processes in the configuration of their production systems and agronomic practices over time.
Hugo Mauricio Salazar Echeverry   +2 more
doaj   +1 more source

Fast luffing control of flexible boom of mobile elevated work platform with uncertain control input gain

open access: yesAdvances in Mechanical Engineering, 2023
In this paper, the dynamic model between input electric signal of hydraulic valve and boom luffing angle is established, and luffing control of flexible boom of mobile elevated work platform (MEWP) is studied.
Xin Fang   +3 more
doaj   +1 more source

EFFICIENCY OF THE AGRICULTURAL ECONOMIC RESOURCES USED IN SUMMER TOMATO PRODUCTION IN ALEXANDRIA GOVERNORATE [PDF]

open access: yesArab Universities Journal of Agricultural Sciences, 2020
The research aimed to measuring the Efficiency of the Agricultural Economic Resources Used in Summer Tomato Production in Alexandria Governorate, the research is relied on using of some descriptive and quantitative economic analysis methods in data ...
Ahmed Kassem   +2 more
doaj   +1 more source

Urban temperature analysis and impact on the building cooling energy performances: an Italian case study

open access: yesRenewable Energy and Sustainable Development, 2016
Climate changes and urban sprawl are dramatically increasing the heat island effect in urban environments, whatever the size and the latitude are, affecting these latter parameters the effect intensity.
Michele Zinzi   +3 more
doaj   +1 more source

Efisiensi Teknis dan Ekonomis Pada Usahatani Padi di Desa Alang-alang Kecamatan Tragah Kabupaten Bangkalan

open access: yesAgricultural Socio-Economic Empowerment and Agribusiness Journal, 2023
This study aims to analyze the level of technical, allocative and economic efficiency of farmers in Alang-Alang village towards rice farming, and to determine the factors that affect production efficiency.
Meliana Ahdiningtyas   +4 more
doaj   +1 more source

Numerical studies of floor heave control by the rock bolts reinforcement technology in retained gob-side gateroad [PDF]

open access: yesE3S Web of Conferences
The effectiveness of modified rock bolts reinforcement technology for floor heave control in gob-side entry retaining was studied in this paper. A finite-element numerical simulation was used to analyse stress-strain state of surrounding rocks before and
Sakhno Ivan   +3 more
doaj   +1 more source

Investigation of Chemical-looping Gasification Characteristics of Chinese Western Coals with Hematite-CuO Oxygen Carrier [PDF]

open access: yesE3S Web of Conferences, 2020
In order to realize highly efficient conversion of Chinese western bituminous coals into syngas, a series of chemical-looping gasification experiments was conducted with hematite-CuO oxygen carrier in a laboratory-scale fluidized-bed reactor. The results
An Mei   +3 more
doaj   +1 more source

Alteration in Brain Functional and Effective Connectivity in Subjects With Hypertension

open access: yesFrontiers in Physiology, 2018
To reveal the physiological mechanism of the cognitive decline in subjects with hypertension, the functional connectivity (FC) was assessed by using the wavelet phase coherence (WPCO), and effective connectivity (EC) was assessed by using the coupling ...
Lingguo Bu   +8 more
doaj   +1 more source

Investigating the Efficiency of Indonesian Employee Pension Funds

open access: yesRomanian Economic Journal, 2022
This study aims to examine the performance of Indonesian employee pension funds based on technical and scale efficiencies. Our sample is 40 Indonesian pension funds in the 2011-2017 period, resulting in 280 firm-year observations.
Pascalis Seran   +3 more
doaj   +1 more source

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