Results 41 to 50 of about 10,979 (218)

Reynolds number limits for jet propulsion: A numerical study of simplified jellyfish [PDF]

open access: yes, 2010
The Scallop Theorem states that reciprocal methods of locomotion, such as jet propulsion or paddling, will not work in Stokes flow (Reynolds number = 0).
Herschlag, Gregory, Miller, Laura A.
core   +3 more sources

Method for Keyhole-Free High-Aspect-Ratio Trench Refill by LPCVD

open access: yesMicromachines, 2022
In micro-machined micro-electromechanical systems (MEMS), refilled high-aspect-ratio trench structures are used for different applications. However, these trenches often show keyholes, which have an impact on the performance of the devices. In this paper,
Henk-Willem Veltkamp   +6 more
doaj   +1 more source

The impact of Rapido trawling for scallops, Pecten jacobaeus (L.), on the benthos of the Gulf of Venice [PDF]

open access: yes, 1999
Rapido trawls are used to catch sole around the coast of Italy and to catch scallops in the northern Adriatic Sea but little is known about the environmental impact of this gear.
Atkinson, RJA   +3 more
core   +1 more source

A hybrid analytical and discrete based methodology to calculate path scallop of helical toroidal cutter in five-axis milling [PDF]

open access: yesFME Transactions, 2018
This paper presents a new method to calculate path scallop height of toroidal cutter during free-form surface machining in five-axis milling. The scallop height was defined as the distance between the tool intersection point and the normal point on the ...
Hendriko Hendriko
doaj  

Development of Novel Cardiac Indices and Assessment of Factors Affecting Cardiac Activity in a Bivalve Mollusc Chlamys farreri

open access: yesFrontiers in Physiology, 2019
Cardiac activity has been widely used in marine molluscs as an indicator for their physiological status in response to environmental changes, which is, however, largely less studied in scallops.
Qiang Xing   +11 more
doaj   +1 more source

Ultradian rhythms in shell composition of photosymbiotic and non-photosymbiotic mollusks [PDF]

open access: yesBiogeosciences, 2023
The chemical composition of mollusk shells is a useful tool in (paleo)climatology since it captures inter- and intra-annual variability in environmental conditions. Trace element and stable isotope analysis with improved sampling resolution now allows in
N. J. de Winter   +9 more
doaj   +1 more source

Optimization of Tool Path for Uniform Scallop-Height in Ultra-precision Grinding of Free-form Surfaces [PDF]

open access: yesNanomanufacturing and Metrology, 2019
Free-form surfaces have been widely used in complex optical devices to improve the functional performance of imaging and illumination quality and reduce sizes. Ultra-precision grinding is a kind of ultra-precision machining technology for fabricating free-form surfaces with high form accuracy and good surface finish.
Shanshan Chen   +3 more
openaire   +3 more sources

New PASCAL Ace implant system in complex percutaneous mitral valve repair

open access: yesREC: Interventional Cardiology (English Ed.), 2022
To the Editor, We present the case of a 73-year-old woman with arterial hypertension, morbid obesity (122 kg, body mass index = 44), and chronic lower limb swelling with recurrent skin infections due to multi-drug resistant microorganisms.
Chi-Hion Pedro Li   +5 more
doaj   +1 more source

The Effect of the Machining Strategy on the Surface Accuracy When Milling with a Ball End Cutting Tool of the Aluminum Alloy AlCu4Mg

open access: yesApplied Sciences, 2022
The article discusses the effect of milling strategies on surface quality and geometric deviations during pocket milling when the perpendicular position of the tool is used. For experimental research, an aluminum alloy, AlCu4Mg, was used.
Ján Varga   +3 more
doaj   +1 more source

FIRST EXPERIENCE OF CAGE CULTIVATION OF HATCHERY-PRODUCED JUVENILE SCALLOP MIZUHOPECTEN YESSOENSIS AT EASTERN COAST OF PRIMORYE

open access: yesИзвестия ТИНРО, 2019
Yesso scallop Mizuhopecten yessoensis is the main object of aquaculture in Primorye with annual yield measured in hundreds ton. However, further development of its farming could be restricted by lack of the spat.
S. G. Gavrilova   +2 more
doaj   +1 more source

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