Yayın tarihi için WoS İndeksli Yayınlar Koleksiyonu listeleme
Toplam kayıt 7605, listelenen: 241-260
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Overlapping decompositions, expansions, contractions, and stability of hybrid systems
(IEEE-Inst Electrical Electronics Engineers Inc, 1998)Inclusion and extension principles are defined and studied for hybrid systems, The controller design problem for hybrid systems is then considered within the framemork of the extension principle. It is shown that if the ... -
New alkaloids from Bongardia chrysogonum
(Taylor & Francis LTD, 1998)Two new alkaloids, 17-desoxy-cis-lamprolobine (1) and bonzakaline (2), along with the known alkaloids lupanine (3) and palmatrubine (4), have been isolated from the ethanolic extracts of Bongardia chrysogonum. Compounds 1 ... -
An ultrasonic motor using a metal-ceramic composite actuator generating torsional displacement
(Japan J Applied Physics, 1998)An ultrasonic motor composed of three components; a stator, a rotor and a ball bearing is proposed. The stator is made of an active piezoelectric ring, poled in the thickness direction and bonded with two windmill-like ... -
Cyclic crack growth behaviour of two nickel base turbine disc alloys
(Kluwer Academic Publ, 1998)The high temperature fatigue crack growth behaviour of the nickel base superalloys Alloy 718 and Rene 95 (specimen thickness = 4.1 mm) were investigated and compared with each other. Fatigue crack propagation (FCP) tests ... -
Microencapsulation of ketorolac tromethamine by means of a coacervation phase separation technique induced by the addition of non-solvent
(Taylor & Francis LTD, 1998)Ketorolac tromethamine (KT) is a non-steroidal drug with potent analgesic and anti-inflammatory activity and is absorbed rapidly (T-max (1.0h) with an efficiency >87% following oral and intramuscular administration. The ... -
A differential pulse voltammetric determination of nisoldipine using glassy carbon electrode in pharmaceutical preparations
(Marcel Dekker Inc, 1998)A differential pulse voltammetric method is described for the determination of nisoldipine based on the oxidation of the dihydropyridine group on the surface of a rotating glassy carbon disk electrode. The voltammetric ... -
Nepetalactone: A new opioid analgesic from Nepeta caesarea Boiss.
(Royal Pharmaceutical Soc Great Britain, 1998)The essential oils of Nepeta species including Nepeta phyllochlamys P. H. Davis, N. nuda L. ssp. nude, and N. caesarea Boiss. have been screened by use of the tail-flick and tail immersion (52.5 degrees C) methods. Of the ... -
The essential oil of Satureja cuneifolia
(Georg Thieme Verlag, 1998)The essential oils from 19 samples of Satureja cuneifolia that is used as a substitute for thyme in Turkey have been analysed by GC and GC/MS. The plant materials were collected from different regions of Turkey, The results ... -
Investigation of the structure and the properties of the potentially tautomeric 1,2-dihydro-5,7-dimethyl-6H-pyrrolo[3,4-d]pyridazine-1-ones in the gas and aqueous phases using semiempirical methods
(Elsevier Science BV, 1998)Potentially tautomeric 1,2-dihydro-5,7-dimethyl-6H-pyrrolo[3,4-d]pyridazine-1-ones and their fixed tautomeric forms have been studied, in order to predict their tautomeric equilibrium constants and pK(a) values, using ... -
Effects of lead on the activity of 6-aminolevulinic acid dehydratase in Gammarus pulex
(Springer Verlag, 1998)… -
Investigation of the structure of and the properties of the potentially tautomeric 1,2,3,4-tetrahydro-5,7-dimethyl-6H-pyrrolo[3,4-d]pyridazine-1,4-diones in the gaseous and aqueous phases using the AM1 semi-empirical method
(Elsevier Science BV, 1998)Potentially tautomeric 1,2,3,4-tetrahydro-5,7-dimethyl-6H-pyrrolo[3,4-d]pyridazine-1,4-diones and their fixed tautomeric forms have been studied in order to predict their tautomeric equilibrium constants and pK(a) values ... -
Modified consolidation test apparatus
(International Society Offshore& Polar Engineers, 1999)Consolidation test is conducted in the laboratory by oedometer test equipment. Load is applied step by step with mechanical weights in this test. The load is kept for 24 hours in each step. Sample disturbance takes place ... -
Transmission electron microscopy studies of La2O3-doped alpha-SiAlON ceramics
(IOP Publishing LTD, 1999)alpha-SiAlON is able to accommodate cations into its crystal structure if the cations are sufficiently small in size, thus helping to reduce the volume of the remnant grain boundary phase after processing. In this study, ... -
A decentralized control approach for transportation networks
(Pergamon Press LTD, 1999)A decentralized control approach for transportation networks to prevent traffic congestion is presented. The approach was developed by considering flow control and routing control together. The control algorithm is based ... -
Effect of electrolytes on sanitaryware slip
(Amer Ceramic Soc, 1999)Slip viscosity is used widely in controlling ceramic casting slip. The viscosity of slip changes with the amount and type of electrolyte. -
Use of perlite in wall tile production
(Amer Ceramic Soc, 1999)Raw perlite was added to monoporous tile bodies in different proportions. Their mechanical, physical and thermal characteristics were compared to ones having no perlite. Adding perlite to wall tile bodies offers both weight ... -
Preparation of multiple-cation alpha-SiAlON ceramics containing lanthanum
(Amer Ceramic Soc, 1999)Until recently, it was accepted that Ce3+ cations, with an ionic radius (r) of 1.03 Angstrom, were too large to form an alpha-SiAlON structure. However, more-recent studies have shown that cerium cations can be incorporated ... -
Metal-ceramic interface characterisation of capacitor-discharge joined alumina
(IOP Publishing LTD, 1999)Capacitor discharge joining of ceramics offer bonding without the damaging effects of extended heating times. Microstructures formed in alumina-AlxNiyYz -alumina joints were investigated using a combination of EDX and PEELS ... -
The essential oil of Acinos suaveolens (Sm.) G. Don fil. Acinos arvensis (Lam.) Dandy and Acinos rotundifolius Pers. growing wild in Turkey
(John Wiley & Sons LTD, 1999)In this study, water-distilled essential oil of three species of Acinos Miller (Lamiaceae) were analysed by GC-MS. Oils from A. suaveolens (Sm.) G. Don fil. were found to contain pulegone (23.2-80.7%) and isomenthone ... -
Geographical distribution of Erwinia salicis strains, the cause of watermark disease of willows
(Blackwell Wissenschafts-Verlag GMBH, 1999)Eighty-six isolates of Erwinia salicis, the causal agent of watermark disease of willow, were obtained from culture collections and collected from various willow plantations in south-east England. These isolates were ...