Materials Literature
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The low-heat-rejection (LHR) diesel promises decreased engine fuel consumption by eliminating the traditional liquid cooling system and converting energy normally lost to the coolant into useful shaft work instead. However, most of the cooling energy thus conserved is transferred into the exhaust stream rather than au…
For pt.II see ibid., vol.3, no.3, p.931-8 (1988). Extensive investigations into various phases of discharge development in SF/sub 6/ (corona formation, streamer to leader transmission, leader, and propagation) are summarized, with the goal of familiarizing the engineer with the theoretical and empirical basis of a qua…
Losses were measured during short-circuit tests on a 262.5 MVA, three-phase, five limb converter transformer at various frequencies from 50 Hz to 1 KHz. Using these and the calculated values of the harmonic currents produced by the AC/DC converter, load losses were determined. Variations of these losses with the conve…
The surface reaction products associated with the hydrolysis of ZBLA glasses have been characterized using X‐ray photoelectron spectroscopy. The predominant surface reaction product in water and basic solutions is a zirconium (hydr)oxy‐fluoride species. The compositional analyses indicate that the (hydr)oxyfluoride wh…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTreatment of coal devolatilization in comprehensive combustion modelingB. Scott Brewster, Larry L. Baxter, and L. Douglas SmootCite this: Energy Fuels 1988, 2, 4, 362–370Publication Date (Print):July 1, 1988Publication History Published online1 May 2002Published inissue 1 Ju…
Vickers and Knoop indentation tests have been used to study the fracture and deformation characteristics of 9.4‐mol%‐Y 2 O 3 ‐stabilized ZrO 2 single crystals. K c is anisotropic, with values of 1.9 and 1.1 MPa·m 1/2 for radial cracks propagating along (100) and (110), respectively. The toughness for these two orienta…
Abstract The adsorption, chemisorption and oxide formation of molecular oxygen was studied on the (100) surface of molybdenum single crystal by following the changes in Mo 3d photoelectron lines and the characteristic losses in EELS. For estimation of the oxygen content, both XPS and AES were applied. At the room temp…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNMR of silk fibroin. 9. Sequence and conformation analyses of the silk fibroins from Bombyx mori and Philosamia cynthia ricini by 15N NMR spectroscopyTetsuo Asakura, Hiroaki Yoshimizu, and Fumihiko YoshizawaCite this: Macromolecules 1988, 21, 7, 2038–2041Publication Date (Pr…
This paper reviews the technology of some of the concepts which are applicable to electrically heated clothing systems, and which have been examined by the Ministry of Defence. Some of these systems are already in military and civilian use, whereas others are experimental. The essential features which an electrically…
Abstract Celluloses from a variety of common sources were analyzed for availabilities of O(2)H, O(3)H, and O(6)H in order to estimate the extent of hydrogen bonding on accessible fibrillar surfaces. Celluloses from flax, ramie, sisal, and wood (both cellulose I and II from wood) together with liquid NH 3 ‐swollen cott…
Abstract A series of amine terminated polypropylene oxide based thermoplastic polyureas with hard segment contents of 30%, 50%, and 70 percent were synthesized via solution polymerization and reaction injection molding (RIM). Amine terminated polypropylene oxide (PPO‐NH 2 ) of M n = 2000 was used as the soft segment a…
Infrared spectroscopy (IRS) was used to study the formation and transformation of rust phases and the weathering characteristics of ASTM(1) A588 weathering steels in bridge spans. The technique enables not only clear differentiation between various rust phases, but also detects various forms of amorphous and not well-…
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X-ray photoelectron spectroscopy (XPS) is used to characterize the surface region of a commercial Cu/ZnO/Al 2 O 3 (33/66/1 wt %) catalyst. A systematic study of the effects of oxidation, reduction, and the steam reformation of methanol on the oxidative state of the Cu component is presented. The Zn XPS features show n…
peer reviewed
Pitting corrosion of aluminum alloys is sensitive to the type of surface treatment used prior to a corrosion test. In particular, significant differences in the pitting behavior are observed between the as-received and etched surfaces of several wrought alloys. It is shown that the as-received surface is generally mor…
Using radiation inactivation we determined that p21 ras proteins exhibit an oligomeric target size when assayed both structurally and functionally. Similar target sizes of p21 in ras-transformed cells and in purified preparations of the protein suggested that its structure is homo-oligomeric. p21 monomers were destroy…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGlyceryl polyphosphazenes: synthesis, properties, and hydrolysisHarry R. Allcock and Sukky KwonCite this: Macromolecules 1988, 21, 7, 1980–1985Publication Date (Print):July 1, 1988Publication History Published online1 May 2002Published inissue 1 July 1988https://pubs.acs.org…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA new class of cation conductors: polyphosphazene sulfonatesS. Ganapathiappan, Kaimin Chen, and D. F. ShriverCite this: Macromolecules 1988, 21, 7, 2299–2301Publication Date (Print):July 1, 1988Publication History Published online1 May 2002Published inissue 1 July 1988https:…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEstimation of the Rh-Rh bond dissociation energy in the (octaethylporphyrinato)rhodium(II) dimer by proton NMR line broadeningBradford B. Wayland, Virginia L. Coffin, and Maria D. FarnosCite this: Inorg. Chem. 1988, 27, 15, 2745–2747Publication Date (Print):July 1, 1988Publi…