Now showing items 121-130 of 992
Design of molecular architectures for polymeric mesophase formation
(Wiley Periodicals, Inc.Hüthig & Wepf Verlag, 1995-07)
Based on the tendency of low molar mass liquid crystals composed of extended mesogens symmetrically disubstituted with long n ‐alkoxy substituents to exhibit smectic C mesophases, we have proposed that SCLCPs with laterally ...
Population balance between producing and nonproducing hybridoma clones is very sensitive to serum level, state of inoculum, and medium composition
(Wiley Subscription Services, Inc., A Wiley Company, 1992-02-05)
Secreting and nonsecreting hybridoma populations derived from the murine hybridoma cell line 167.4G5.3 were each grown in batch culture in low serum and serum-free media. Under serum-free conditions, a secreting population ...
Expression of Wild-Type and Mutant Rat Liver CTP: Phosphocholine Cytidylyltransferase in a Cytidylyltransferase-Deficient Chinese Hamster Ovary Cell Line
(Elsevier, 1994-05)
The strain 58 Chinese hamster ovary (CHO) mutant defective in CTP:phosphocholine cytidylyltransferase was characterized as an expression system for exogenous cytidylyltransferase. Strain 58 cells express less than 5% of ...
Synthesis and assignments of regioisomeric cyanoimidazole esters
(Elsevier, 1994-02-28)
Regioassignments of ethyl cyanoimidazolecarboxylates have been performed by the nuclear Overhauser effect(NOE) studies on the regioisomeric monocyanoimidazoles obtained by the hydrolysis of the esters followed by ...
Synthesis of (+/-)tylophorine by the intramolecular cycloaddition of an azide with an [omega]-chloroalkene
(Elsevier, 1994)
Cyclization of (Z)-1-(2-chloromethyl)phenyl-5-azidopent-1-ene 10 in benzene at 120[deg]C followed by treatment with sodium borohydride produced 1,2,3,5,10,10a-hexahydropyrrolo[1,2-b]isoquinoline 11 in 71% yield. A similar ...
Thermodynamics of alkali alkanoates X. Heat capacities and thermodynamic properties of lithium methanoate and lithium ethanoate at temperatures from [approximate] 5 K to 580 K
(Elsevier, 1994-12)
Heat capacities of lithium methanoate and ethanoate (CA Registry numbers [556-63-8] and [546-89-4]) have been measured by adiabatic intermittent-heating equilibrium calorimetry from temperatures T near 5 K to 350 K and by ...
Hydrazine adsorption and decomposition on the GaAs(100)-c(8 x 2) surface
(Elsevier, 1994-12-20)
Temperature programmed desorption (TPD), X-ray photoelectron spectroscopy (XPS), and high resolution electron energy loss spectroscopy (HREELS) have been used to study the decomposition mechanism of hydrazine (N2H4) on the ...
Non-biomimetic route to deoxyadenosine adducts of carcinogenic polycyclic aromatic hydrocarbons
(Elsevier, 1991-10-21)
Aminotriols are prepared by direct aminolysis of the diol epoxides of polycyclic aromatic hydrocarbons, providing a substantial improvement over literature methods. The condensation of aminotriols with 6-halopurine ...
Yeast expression vectors using RNA polymerase III promoters
(Elsevier, 1994-12-30)
A series of Saccharomyces cerevisiae -- Escherichia coli shuttle vectors is described in which small RNAs can be stably expressed in yeast from two different promoters for RNA polymerase III transcription. The vectors are ...
Slouching toward a systems approach to treatment
(Elsevier, 1994)
Both the health care sector generally and the alcohol and drug field are moving toward a truly systematic approach to treatment, accelerated by the anticipated advent of health care reform. There is considerable reluctance ...