Results 11 to 20 of about 129,760 (220)
Determination of the interaction impedance of helix slow-wave structures. [PDF]
The computer simulation of helix travelling-wave tubes requires accurate information about the phase velocity, interaction impedance and attenuation of the helix slow wave structure at each frequency.
Carter, R. G.
core +5 more sources
Optimisation of variable helix end milling tools [PDF]
High productivity, low cost and high profits are important issues in aerospace, automotive and tool/die metal manufacturing industries. Machining processes are widely used in manufacturing operations for metal manufacturing rather than casting and ...
Yusoff, Ahmad
core +7 more sources
Total synthesis and structural characterization of a novel protein scaffold from the snail Biomphalaria glabrata. [PDF]
Abstract Disulfide‐rich miniproteins constitute compact and highly stable scaffolds of growing interest for molecular and structural engineering. Schistosomins are ~80‐residue proteins conserved across gastropods that form a long‐standing orphan family whose structure and biological roles have remained unknown.
Melnyk O +13 more
europepmc +2 more sources
The Triple Helix of University-Industry-Government Relations [PDF]
Etzkowitz & Leydesdorff (2000) further elaborated the Triple Helix of University-Industry-Government Relations (cf. Etzkowitz & Leydesdorff, 1995; Lowe, 1982) into a model for studying knowledge-based economies.
Leydesdorff, Loet +2 more
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An important problem today is the pollution of the territory of Ukraine with heavy metals: lead, cadmium, copper, zinc and others. Relevance of the topic is that nowadays the issues of safety and quality control are not fully resolved in the country, as ...
I. V. Zabarna, I. V. Jacenko
doaj +1 more source
A study of grape snails (Helix pomatia) using the electron paramagnetic resonance (EPR) spectroscopy method, where shells were exposed to ionizing gamma radiation, indicated that the effect of radiation up to certain doses results in the emergence of ...
Aygun Nasibova +8 more
doaj +1 more source
Why do snails have hairs? A Bayesian inference of character evolution [PDF]
Background: Costly structures need to represent an adaptive advantage in order to be maintained over evolutionary times. Contrary to many other conspicuous shell ornamentations of gastropods, the haired shells of several Stylommatophoran land snails ...
Pfenninger Markus +11 more
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Venomous secretions from marine snails of the Terebridae family target acetylcholine receptors [PDF]
Venoms from cone snails (Conidae) have been extensively studied during the last decades, but those from other members of the suborder Toxoglossa, such as of Terebridae and Turridae superfamilies attracted less interest so far. Here, we report the effects
Wunder, C. +26 more
core +1 more source
Can processes make relationships work? The Triple Helix between structure and action [PDF]
This contribution seeks to explore how complex adaptive theory can be applied at the conceptual level to unpack Triple Helix models. We use two cases to examine this issue – the Finnish Strategic Centres for Science, Technology & Innovation (SHOKs) and ...
Kuusisto, Jari +7 more
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Study of toxicness of snails meat on biological model
Snails can be found in any part of the planet. They belong to the class of gastropods, which includes terrestrial, freshwater, marine snails. Their ancestors are some of the most ancient species of the fauna.
I. S. Danilova
doaj +1 more source

