Now showing items 141-150 of 3164
Flow equations for graphite
(Elsevier, 1976)
In analyzing erosion of graphite at high strain rate (~107 sec-1) and temperature (~4000[deg]C), it is necessary to have some approximation for the constitutive equation. Data for graphite from static and low strain rate ...
Synthesis of [4.2]cyclophanes
(Elsevier, 1978)
Vinyl -xylylene cross-dimerizes with other xylylene-type intermediates to yield cycloadducts of the [8+6] and [6+6] type. This reaction provides a simple entry to the [4.2]paracyclophane system as well as the analogous ...
Determination of iodoamino acids and inorganic lodide by thin-layer chromatography
(Elsevier, 1970-10)
A method has been presented for the separation of monoiodotyrosine diiodotyrosine, diiodothyronine, triiodothyronine, thyroxine, and inorganic iodide from one another by thin-layer chromatography on silica gel. The solvent ...
Thermodynamic properties of silicides. II. Heat capacity at temperatures T from 5.9 K to 341 K and derived thermodynamic properties to T = 1200 K of tungsten disilicide: WSi2.06
(Elsevier, 1993-11)
The heat capacity of tungsten disilicide WSi2.06 was measured over the temperature range 5.9T/K)-2[middle dot]mol-1. For the lattice, the Debye characteristic temperature [Theta]CD = (317.8+/-3.3) K. From our results, the ...
On the dynamic structure factor, S(q,[omega]), of polymers in dilute solution
(Elsevier, 1981-08)
In principle, interpretation of dynamic scattering experiments requires theoretical calculation of either intermediate scattering functions S(q,t) or dynamic structure factors S(q,[omega]). Although dynamic scattering ...
Heat capacity of Th(NO3)4[middle dot]5H2O from 5 to 350 K
(Elsevier, 1976-01)
The heat capacity of crystalline Th(NO3)4[middle dot]5H2O has been determined by adiabatic calorimetry primarily to enable evaluation of the standard partial molar entropy and heat capacity of aqueous thorium(IV) ion. No ...
Focus on function: Single molecule RNA enzymology
(Wiley Subscription Services, Inc., A Wiley Company, 2007-12-05)
The ability of RNA to catalyze chemical reactions was first demonstrated 25 years ago with the discovery that group I introns and RNase P function as RNA enzymes (ribozymes). Several additional ribozymes were subsequently ...
Low-Temperature SCR of NO with NH 3 over USY-Supported Manganese Oxide-Based Catalysts
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 2003-04)
A series of catalysts of manganese oxide, manganese–cerium and iron–manganese oxide supported on USY (ultra-stable Y zeolite) were studied for the low-temperature selective catalytic reduction (SCR) of NO with ammonia in ...
Effect of gravity on Brownian flocculation
(Elsevier, 1984-09)
In previous analyses of simultaneous Brownian and gravity-induced flocculation, it has been assumed that each mechanism contributes independently to the total flocculation rate. In this paper the rigorous problem of coupled ...
Shape-selective separation of polycyclic aromatic hydrocarbons by reversed-phase liquid chromatography on tetraphenylporphyrin-based stationary phases
(Elsevier, 1993-07-02)
The reversed-phase chromatographic behavior of planar and non-planar polycyclic aromatic hydrocarbons (PAHs) is investigated on tetraphenylporphyrin and two metallotetraphenylporphyrin [Sn(IV), In(III)] bonded stationary ...