Results 1 to 10 of about 412,425 (116)

Removal efficiency of central vacuum system and protective masks to suspended particles from dental treatment. [PDF]

open access: yesPLoS ONE, 2019
BACKGROUND:High levels of suspended particulate matters (PMs) and bioaerosols are created by dental procedures. The present study aimed to evaluate the size and concentration of PMs produced by drilling and grinding teeth, and to assess the efficiency of
Ming-Hui Liu   +4 more
doaj   +2 more sources

Prototype of an Innovative Vacuum Dryer with an Ejector System: Comparative Drying Analysis with a Vacuum Dryer with a Vacuum Pump on Selected Fruits

open access: yesFoods, 2023
The following article describes new research about the design, construction and installation of the new prototype of a vacuum dryer with an ejector system.
Zdravko Šumić   +7 more
doaj   +3 more sources

Development of a Control System for the Teat-End Vacuum in Individual Quarter Milking Systems

open access: yesSensors, 2013
Progress in sensor technique and electronics has led to a decrease in the costs of electronic and sensor components. In modern dairy farms, having udders in good condition, a lower frequency of udder disease and an extended service life of dairy cows ...
Ulrich Ströbel   +3 more
doaj   +3 more sources

Design of optically pumped cesium beam tube with hexapole magnetic system for longer lifetime and better SNR

open access: yesFrontiers in Physics, 2022
In order to get a better tradeoff between the long lifetime and high performances of cesium beam atomic clocks, we proposed a design scheme of compact optically pumped cesium beam tube (OPCBT) based on hexapole magnetic focusing (HMF) system for the ...
Haijun Chen   +3 more
doaj   +1 more source

Design of Autonomous Mobile Robot for Cleaning in the Environment with Obstacles

open access: yesApplied Sciences, 2021
This paper describes the design and development of a cleaning robot, using adaptive manufacturing technology and its use with a control algorithm for which there is a stability proof.
Arpit Joon, Wojciech Kowalczyk
doaj   +1 more source

Design of a vacuum system for space active hydrogen maser

open access: yesFrontiers in Physics, 2022
With the high precision and stability of its frequency signal outputs, active hydrogen maser plays an important role in such fields as timing, satellite navigation, and communication. However, it needs to be lighter so as to be applied in space.
Haohui Que   +11 more
doaj   +1 more source

Feasibility Analysis of Vacuum Pipeline Magnetic Levitation Energy Storage System Based on Existing Magnetic Levitation Transportation Technology [PDF]

open access: yesE3S Web of Conferences, 2022
This paper is mainly summarized the research progress of maglev transportation technology. The vacuum pipeline magnetic levitation energy storage system is constructed based on the existing four types of magnetic levitation as technical prototypes, and ...
Fan Ziming, Yang Jun, Xun Hua
doaj   +1 more source

Method for calculating pumping characteristic of high-vacuum system with turbomolecular vacuum pump [PDF]

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", 2018
The pumping characteristic of a high-vacuum system depends on a number of factors: the pumping characteristics of a high-vacuum turbomolecular pump (TMN), the conductivity of connecting lines, the pumping characteristics of a for vacuum pumping system,
E. V. Svichkar   +2 more
doaj   +1 more source

Energetic and exploitation characteristics of a two-phase ejecting vacuum system built in the paper machine at A.D. Komuna Skopje [PDF]

open access: yesHemijska Industrija, 2004
This work presents the concept of a two-phase ejecting vacuum system. The energetic characteristics of these systems were analyzed and compared to those with mechanical pumps with water ring and turbo compressor vacuum pumps.
Šarevski Milan   +3 more
doaj   +1 more source

A Review of Progress and Applications of Automated Vacuum Mooring Systems

open access: yesJournal of Marine Science and Engineering, 2022
Compared with the traditional mooring system, the automated vacuum mooring system can meet the development needs of large-scale ship automation, port automation, and environmental protection.
Kaicheng Yan   +3 more
doaj   +1 more source

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