نتایج جستجو برای: spun proteins
تعداد نتایج: 557804 فیلتر نتایج به سال:
In this work, the structural and magnetic properties of ingot and melt-spun Pr3Fe24.75Co2.75Ti1.5 compounds have been investigated. The structural characterization of the compounds, by X-ray powder diffraction, is evidenced for a monoclinic Nd3(Fe,Ti)29-type structure (A2/m space group). A 2-type FOMP have been observed in the magnetic AC susceptibility curves of the ingot and melt-spun compoun...
All characterized major ampullate silks from orb-web weaving spiders are composites of primarily two different proteins: MaSp1 and MaSp2. The conserved association of MaSp1 and MaSp2 in these spider species, the highly conserved amino acid motifs, and variable ratios of MaSp1 to MaSp2 demonstrate the importance of both MaSp1 and MaSp2 to the strength and elasticity of the fiber. Computer simula...
Spider silks are protein-based "biopolymer" filaments or threads secreted by specialized epithelial cells as concentrated soluble precursors of highly repetitive primary sequences. Spider dragline silk is a flexible, lightweight fiber of extraordinary strength and toughness comparable to that of synthetic high-performance fibers. We sought to "biomimic" the process of spider silk production by ...
Frame-spun knots are constructed by spinning a knot of lower dimension about a framed submanifold of S n. We show that all frame-spun knots are slice (null-cobordant).
مقایسه ی تنش های مغناطوتنگشی در ترکیبات pr۳fe۲۴.۷۵co۲.۷۵ti۱.۵-ingot و pr۳fe۲۴.۷۵co۲.۷۵ti۱.۵-meltspun
در این کار، خواص ساختاری و مغناطیسی ترکیبهای pr3fe24.75co2.75ti1.5-ingot و pr3fe24.75co2.75ti1.5-melt spun بررسی شده است. مشخصهیابی ساختاری نمونهها با استفاده از پراش پرتو ایکس، شاهدی برای یک ساختار تکمیل نوع nd3(fe, ti)29 با گروه فضایی a2/m میباشد. گذار fomp نوع 2 در اندازه گیریهای پذیرفتاری ac هر دو نمونه مشاهده شده است. اندازه گیریهای انبساط گرمایی و مغناطوتنگش در گستره دمایی 77 تا 575...
In this work, we have studied the influence of dc joule-heating thermal processing on the structure, magnetoimpedance (MI) and thermal properties of Co64Fe4Ni2B19-xSi8Cr3Alx (x = 0, 1, and 2) rapidly solidified melt-spun ribbons. The nanocrystallization process was carried out by the current annealing of as-spun samples at various current densities. As-spun and joule-heated samples were studied...
1. Introduction. In [5] Mazur constructed a homotopy 4-sphere which looked like one of the strongest candidates for a counterexample to the 4-dimensional Poincaré Conjecture. In this paper we show that Mazur's example is in fact a true 4-sphere after all. This raises the odds in favour of the 4-dimensional Poincaré Conjecture. The proof involves a smooth knot of S2 in S4 with unusual properties.
Emergence of nanotechnology has resulted in the introduction of the electrospinning process in fabricating and characterising the polymer electrolyte membrane from the sulfonated poly (ether ether ketone) (SPEEK) nanocomposite membrane comprised of electrospun Cloisite15A® (e-spun CL...
A 2-knot will be a 2-sphere embedded into R locally flatly. Although we cannot see a 2-knot directly with our eyes, there are several ways to visualize it. A motion picture is one of the ways. Roughly speaking, a motion picture is a CT scan (Computed Tomographic scan) of a 2-knot. It is a one-parameter family of slices of a 2-knot, that are 0or 1-dimensional objects in R. The n-twist-spun trefo...
The mechanical properties of artificial spider silks are approaching a stage where commercial applications become realistic. However, the yields recombinant silk proteins that can be used to produce fibers with good typically very low and many purification spinning protocols still require use urea, hexafluoroisopropanol, and/or methanol. Thus, improved production methods minimal environmental i...
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