The theory and practice of cotton spinning : or, The carding and spinning master's assistant.

First edition has title: The carding and spinning master's assistant.

Exposition of the principles of Mr. James Lang's invention for spinning hemp into rope-yarns by machinery and its effect on the strength and durability of cordage,

Mode of access: Internet.

The silk culture in the United States; embracing complete accounts of the latest and most approved modes of hatching, rearing and feeding the silk-worm, managing a cocoonery, reeling, spinning, and manufacturing the silk, &c. ... With brief historical sketches of the silk business, natural history of the silk-worm, the mulberry, &c. comp. from the most approved and reliable works ... To which is added Blydenburgh's Manual of the silk culture; statistics of silk imports, &c., &c.

"The work ... has been prepared ... with the aid of Mr. I. R. Barbour ... we have ... profited by the article on silk in Dr. Ures ... dictionary of arts and sciences, Mr. Bliss's report on silk ... to the legislature of Ohio, Mr. Colman's report to the Massachusetts legislature, &c.; while we have quoted entire The silk manual of ... Mr. Blydenburgh." Advertisement, p. [3]

Boll, fiber, and spinning properties of cotton as affected by management practices

Cover title.

A treatise on canals and reservoirs, and the best mode of designing and executing them; with observations on the Rochdale, Leeds and Liverpool, and Huddersfield canals ... Likewise observations on the best mode of carding, roving, drawing and spinning all kinds of cotton twist. Also instructions for designing and building a corn mill ... together with important directions on public drains.

Mode of access: Internet.

The British cotton manufactures : and a reply to an article on the spinning machinery contained in a recent number of the Edinburgh review /

Mode of access: Internet.

Effect on ginning and spinning efficiency and cotton quality of fiber moisture, seed-cotton cleaning, lint cleaning /

Mode of access: Internet.

Summary of Fiber and Spinning Test Results for Some Varieties of Cotton Grown by Selected Cotton Improvement Groups

Continued by U.S. Agricultural Marketing Service. Agricultural Information Bulletin After 1953

Pioneer woolen mills in Oregon; history of wool and the woolen textile industry in Oregon, 1811-1875,

Map on lining-papers.

Chipless machining; methods of cold forming ferrous metals, including heading, rolling, spinning, swaging, extruding, and high-energy-rate forming.

Includes bibliography.

Electro-spinning of pure collagen nano-fibres – just an expensive way to make gelatin?

Scaffolds manufactured from biological materials promise better clinical functionality, providing that characteristic features are preserved. Collagen, a prominent biopolymer, is used extensively for tissue engineering applications, because its signature biological and physico-chemical properties are retained in vitro preparations. We show here for the first time that the very properties that have established collagen as the leading natural biomaterial are lost when it is electro-spun into nano-fibres out of fluoroalcohols such as 1,1,1,3,3,3-hexafluoro-2-propanol or 2,2,2-trifluoroethanol. We further identify the use of fluoroalcohols as the major culprit in the process. The resultant nano-scaffolds lack the unique ultra-structural axial periodicity that confirms quarter-staggered supramolecular assemblies and the capacity to generate second harmonic signals, representing the typical crystalline triple-helical structure. They were also characterised by low denaturation temperatures, similar to those obtained from gelatin preparations ( p > 0.05). Likewise, circular dichroism spectra revealed extensive denaturation of the electro-spun collagen. Using pepsin digestion in combination with quantitative SDS-PAGE, we corroborate great losses of up to 99% of triple-helical collagen. In conclusion, electro-spinning of collagen out of fluoroalcohols effectively denatures this biopolymer, and thus appears to defeat its purpose, namely to create biomimetic scaffolds emulating the collagen structure and function of the extracellular matrix.

Photo-cross-linked poly(D,L-lactide)-based networks. Structural characterization by HR-MAS NMR spectroscopy and hydrolytic degradation behavior

To date, biodegradable networks and particularly their kinetic chain lengths have been characterized by analysis of their degradation products in solution. We characterize the network itself by NMR analysis in the solvent-swollen state under magic angle spinning conditions. The networks were prepared by photoinitiated cross-linking of poly(dl-lactide)−dimethacrylate macromers (5 kg/mol) in the presence of an unreactive diluent. Using diffusion filtering and 2D correlation spectroscopy techniques, all network components are identified. By quantification of network-bound photoinitiator fragments, an average kinetic chain length of 9 ± 2 methacrylate units is determined. The PDLLA macromer solution was also used with a dye to prepare computer-designed structures by stereolithography. For these networks structures, the average kinetic chain length is 24 ± 4 methacrylate units. In all cases the calculated molecular weights of the polymethacrylate chains after degradation are maximally 8.8 kg/mol, which is far below the threshold for renal clearance. Upon incubation in phosphate buffered saline at 37 °C, the networks show a similar mass loss profile in time as linear high-molecular-weight PDLLA (HMW PDLLA). The mechanical properties are preserved longer for the PDLLA networks than for HMW PDLLA. The initial tensile strength of 47 ± 2 MPa does not decrease significantly for the first 15 weeks, while HMW PDLLA lost 85 ± 5% of its strength within 5 weeks. The physical properties, kinetic chain length, and degradation profile of these photo-cross-linked PDLLA networks make them most suited materials for orthopedic applications and use in (bone) tissue engineering.

Sulfated fibrous ZrO2/Al2O3 core and shell nanocomposites : a novel strong acid catalyst with hierarchically macro-mesoporous nanostructure

A series of solid strong acid catalysts were synthesised from fibrous ZrO2/Al2O3 core and shell nanocomposites. In this series, the zirconium molar percentage was varied from 2 % to 50 %. The ZrO2/Al2O3 nanocomposites and their solid strong acid counterparts were characterised by a variety of techniques including 27Al magic angle spinning nuclear magnetic resonance (MAS-NMR), scanned electronic microscopy (SEM), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS), Nitrogen adsorption and infrared emission spectroscopy (IES). NMR results show that the interaction between zirconia species and alumina strongly correlates with pentacoordinated aluminium sites. This can also be detected by the change in binding energy of the 3d electrons of the zirconium. The acidity of the obtained solid acids was tested by using them as catalysts for the benzolyation of toluene. It was found that a sample with a 50 % zirconium molar percentage possessed the highest surface acidity equalling that of pristine sulfated zirconia despite the reduced mass of zirconia.