Results 41 to 50 of about 14,074,967 (383)

PHYSICAL STRUCTURE OF SHELL MEMBRANES [PDF]

open access: yesJournal of General Physiology, 1948
The results obtained in the present work bring out clearly that the dried shell membrane is an open lattice-like network containing micropores of the order of 1 micron in mean equivalent diameter and whose surface density is roughly 20 millions per sq. cm.
J J, WOLKEN, F A, SCHWERTZ
openaire   +2 more sources

Optical and Infrared Imaging and Spectroscopy of the Multiple-Shell Planetary Nebula NGC 6369

open access: yes, 2011
NGC 6369 is a double-shell planetary nebula (PN) consisting of a bright annular inner shell with faint bipolar extensions and a filamentary envelope. We have used ground- and space-based narrow-band optical and near-IR images, broad-band mid-IR images ...
Acosta Pulido   +48 more
core   +1 more source

Buckling stress relation equations of box beam under compression and torsion

open access: yesNihon Kikai Gakkai ronbunshu, 2014
Recently, high strength steel is used increasingly for plates which constitute the frame structures of vehicles. Since these plates become thinner, the buckling on the plates has been recognized as an important issue for automotive industries.
Katsuya FURUSU   +4 more
doaj   +1 more source

FP Shell Effective Interactions and Nuclear Shell Structure of 44Sc

open access: yesEast European Journal of Physics, 2023
: Nuclear energy levels in 44Sc isotope, with fp shell model space occupation low levels fp-LS shell within shell model calculations had been investigated.
Maryam K. Hassan, Firas Z. Majeed
doaj   +1 more source

AKARI Infrared Observations of the Supernova Remnant G292.0+1.8: Unveiling Circumstellar Medium and Supernova Ejecta

open access: yes, 2009
We present the results of AKARI observations of the O-rich supernova remnant G292.0+1.8 using six IRC and four FIS bands covering 2.7-26.5 um and 50-180 um, respectively.
Blair   +54 more
core   +1 more source

Structural insights into lacto‐N‐biose I recognition by a family 32 carbohydrate‐binding module from Bifidobacterium bifidum

open access: yesFEBS Letters, EarlyView.
Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang   +5 more
wiley   +1 more source

Level set-based topology optimization of thin plate structure for maximizing stiffness under out-of-plane deformation

open access: yesNihon Kikai Gakkai ronbunshu, 2014
The topology optimization method using the level set method and incorporating a fictitious interface energy derived from the phase field method was proposed by part of the authors.
Hitoshi HORIO   +4 more
doaj   +1 more source

dUTPase is essential in zebrafish development and possesses several single‐nucleotide variants with pronounced structural and functional consequences

open access: yesFEBS Open Bio, EarlyView.
dUTPases are involved in balancing the appropriate nucleotide pools. We showed that dUTPase is essential for normal development in zebrafish. The different zebrafish genomes contain several single‐nucleotide variations (SNPs) of the dut gene. One of the dUTPase variants displayed drastically lower protein stability and catalytic efficiency as compared ...
Viktória Perey‐Simon   +6 more
wiley   +1 more source

Influence of the geometrical researches of ruled surfaces on design of unique structures

open access: yesStructural Mechanics of Engineering Constructions and Buildings, 2019
Aims of research. Due to the growing interest in the design, calculation and application of architectural structures and structures in the form of a variety of smooth and composite surfaces, it is interesting to illustrate the use of analytical surfaces,
Iraida A. Mamieva
doaj   +1 more source

Understanding bio‐based polymers: A study of origins, properties, biodegradation and their impact on health and the environment

open access: yesFEBS Open Bio, EarlyView.
This review provides an overview of bio‐based polymer sources, their unique functional properties and their environmental impact, and addresses their role as sustainable alternatives. It discusses end‐of‐life options, including composting and anaerobic digestion for renewable energy.
Sabina Kolbl Repinc   +8 more
wiley   +1 more source

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