Results 1 to 10 of about 5,778,118 (308)

Influence of the excavator hydraulic system efficiency on the productivity

open access: yesResearch in Agricultural Engineering, 2023
This paper presents the experimental research of factors influencing the UDS 214 excavator efficiency. The hydraulic oil flow rate is measured in hydraulic circuits for controlling the moving of the bucket of the UDS 214 ex­cavator.
Michal Jůza, Petr Heřmánek
doaj   +1 more source

Processing Parameters and Ion Excipients Affect the Physicochemical Characteristics of the Stereocomplex-Formed Polylactide-b-Polyethylene Glycol Nanoparticles and Their Pharmacokinetics

open access: yesPharmaceutics, 2022
To optimize the characteristics of stereocomplex polylactide-b-polyethylene glycol nanoparticles (SC-PEG NPs) in terms of pharmacokinetics (PK), we chose continuous anti-solvent precipitation with a T-junction as a preparation method and investigated the
Kohei Ogawa   +4 more
doaj   +1 more source

Folded double-skin façade (DSF): in-depth evaluation of fold influence on the thermal and flow performance in naturally ventilated channels

open access: yesInternational Journal of Sustainable Energy, 2022
Numerous studies have only focused on vertical air channel performance, but there is still a need to perform in-depth research on the flow and heat transfer characteristics of atypical double skin façade (DSF) such as folded cases.
Javad Ahmadi   +2 more
doaj   +1 more source

Evaluation of Different Internal Designs of Hydraulic Nozzles under an Accelerated Wear Test

open access: yesApplied Sciences, 2022
The use of worn-out agricultural nozzles in pesticide application has a negative effect on the efficiency and cost of the application process. It also has an effect on environmental pollution due to an excessive amount of pesticide being applied when ...
Marek Milanowski   +2 more
doaj   +1 more source

Flow Rate Control by Means of Flow Meter and PLC Controller

open access: yesSensors, 2021
This paper presents a design of a flow meter based on a programmable logic controller (PLC). The new construction of a flow meter controlled by PLC increases the possibilities for the control and automation of fluid flow.
Sylwia Włodarczak   +6 more
doaj   +1 more source

Invert-emulsion drilling fluids for exposing Hamakin horizon of the Vostochno-Alinskoye oil and gas condensate field

open access: yesИзвестия высших учебных заведений: Нефть и газ, 2020
The article is devoted to an analysis of the oil well construction in the fields of the Talakan group of Eastern Siberia. The low quality of the construction of oil wells is explained based on geological structure of the reservoir and the conditions of ...
V. A. Parfiryev   +2 more
doaj   +1 more source

Improved Calculation Method for Siphon Drainage with Extended Horizontal Sections

open access: yesApplied Sciences, 2022
Slope siphon drainage is a convenient and efficient above-ground drainage method that is free of manual power and can effectively maintain the stability of potential landslides and prevent the loss of life and property. The complex engineering topography
Yingqiu Zhang   +2 more
doaj   +1 more source

A method and device for online magnetic resonance multiphase flow detection

open access: yesPetroleum Exploration and Development, 2020
Most multiphase flow separation detection methods used commonly in oilfields are low in efficiency and accuracy, and have data delay. An online multiphase flow detection method is proposed based on magnetic resonance technology, and its supporting device
Feng DENG   +11 more
doaj   +1 more source

Simultaneous Measurement of Refractive Index and Flow Rate Using a Co2+-Doped Microfiber

open access: yesApplied Sciences, 2021
This paper has proposed and experimentally demonstrated an integrated Co2+-doped microfiber Bragg grating sensor (Co-MFBGS) that can measure the surrounding liquid refractive index (LRI) and liquid flow rate (LFR) simultaneously.
Da Liu, Ran Gao, Zhipei Li, Anle Qi
doaj   +1 more source

Thermal Performance of a Parabolic Trough Solar Concentrator Coupled with a Modified Flat Plate Collector for Greenhouse Heating [PDF]

open access: yesBiomechanism and Bioenergy Research, 2022
In the present study, a parabolic trough solar collector (PTC) was coupled with a modified flat plate solar collector (FPC) to serve as a greenhouse heating system.
Abolfazl Ziaadini   +2 more
doaj   +1 more source

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