Results 51 to 60 of about 601,515 (325)

THE PROBLEM OF ENSURING UNINTERRUPTED EXPLOITATION OF WELLS ON THE FIELDS AT THE LATE STAGE OF OPERATION

open access: yesВестник Северо-Кавказского федерального университета, 2022
The design of a ramjet wellhead choke, with automatic cleaning throttle channel, which can set in the axial channel of pipe at the wellhead. When the differential pressure increase, which occurs in the case of the axial channel nozzle clogging with ...
Yulianna O. Sizova   +2 more
doaj  

Multi-contrast imaging and digital refocusing on a mobile microscope with a domed LED array [PDF]

open access: yes, 2015
We demonstrate the design and application of an add-on device for improving the diagnostic and research capabilities of CellScope--a low-cost, smartphone-based point-of-care microscope.
D'Ambrosio, Michael V.   +9 more
core   +2 more sources

Optimal design and performance evaluation of tuned mass damper inerter in building structures

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2021
This paper concerns the numerical performance evaluation of multi-degree-of-freedom systems equipped with Tuned Mass Dampers-Inerter (TMDIs); a passive control device used for the mitigation of mechanical vibrations induced by dynamic loads.
Daniel Caicedo Diaz   +2 more
doaj   +1 more source

Method of optimization of the fundamental matrix by technique speeded up robust features application of different stress images

open access: yesInternational Journal of Electrical and Computer Engineering (IJECE), 2022
<span>The purpose of determining the fundamental matrix (F) is to define the epipolar geometry and to relate two 2D images of the same scene or video series to find the 3D scenes. The problem we address in this work is the estimation of the localization error and the processing time.
Maulla Alali   +7 more
openaire   +148 more sources

Multiport VNA Measurements [PDF]

open access: yes, 2008
This article presents some of the most recent multiport VNA measurement methodologies used to characterize these highspeed digital networks for signal integrity.
Ferrero, Andrea Pierenrico   +4 more
core   +1 more source

New Indexing Mechanism for Gear Cutting Using Double Differential Gear Device.

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1997
The hobbing machine of recent years has positively introduced a computer numerical control (CNC) system, but many traditional hobbing machines with gear trains are still being used to produce gears. These traditional machines generally prepare many indexing change gears for gear cutting. But when we cut the gear of a prime number of teeth, the indexing
Takashi Tajima   +2 more
openaire   +3 more sources

Mechanisms, Clinical Strategies, and Promising Treatments of Neurodegenerative Diseases. 12th International Conference AD/PD<sup>TM</sup> Nice, France, March 18-22, 2015: Abstracts [PDF]

open access: yesNeurodegenerative Diseases, 2015
Conference Theme: Mechanisms, Clinical Strategies, and Promising Treatments of Neurodegenerative ...
Balducci, C   +16 more
openaire   +16 more sources

Study on distribution spectrum of grain connection force and differential-speed threshing device for combine harvester

open access: yes浙江大学学报. 农业与生命科学版, 2017
As the main index of the physical and mechanical properties of rice, connection force between grain and grain handle is an important factor to determine the degree of difficulty of threshing.
WANG Zhiming   +3 more
doaj   +1 more source

Impact of controlled extensional flow during extrusion of PP, PVDF and LDPE

open access: yesPolímeros, 2022
The structure and properties of semi-crystalline polymers can be drastically tailored by extensional flows. In this work, polypropylene (PP), Polyvinylidene fluoride (PVDF) and Low Density Polyethylene (LDPE) were melt extruded through a sequence of ...
Marcel Andrey de Goes   +2 more
doaj   +1 more source

DEVICE AND TECHNOLOGY OF CONTINUOUS WELL FLUSHING

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2023
Link for citation: Tretyak A.Ya., Litkevich Yu.F., Kruglova T.N. Device and technology of continuous well flushing. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 5, рр.181-188. In Rus. The relevance research
Alexander Ya. Tretyak   +2 more
doaj   +1 more source

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