Güncel Gönderiler: Kütüphane ve Dokümantasyon Daire Başkanlığı
Toplam kayıt 1217, listelenen: 641-660
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Pyrrole studies: 31. The structures of potentially tautomeric 1,2-dihydro-6H-pyrrolo [3,4-d]pyridazine-1-ones and 1,2,3,4-tetrahydro-6H-pyrrolo [3,4-d]pyridazine-1,4-diones
(1984)1,2-Dihydro-6H-pyrrolo[3,4-d]pyridazine-1-ones exist predominantly as such (104-47: 1) in equilibrium with the 1-hydroxypyridazine form, whereas 1,2,3,4-tetrahydro-6H-pyrrolo-[3,4-d]pyridazine-1,4-diones in equilibrium ... -
Occurrence of Longicaudatine, a New Type of Bis-Indole Base and Bisnor-C-alkaloid H in Strychnos Species
(1983)The structure of longicaudatine, a novel bis-indole alkaloid isolated from several Strychnos species, has been elucidated chiefly by 400-MHz 1H NMR and 13C NMR spectroscopy. In some species this alkaloid co-occurs with ... -
Decreased gastro-intestinal responses to salbutamol and serotonin in streptozotocin-induced diabetes: Improving effect of insulin in vivo and in vitro
(1988)1. 1. Decreased gastro-intestinal responses to salbutamol (sal) and serotonin (5-HT) in experimental diabetes have been postulated. The present study was designed to investigate whether in vivo and in vitro insulin treatments ... -
Observations of the Anomalous Poole-Frenkel Effect in Al–Polyethylene–Al Thin Film Structures
(1986)Thin film Al–polyethylene—Al sandwich structures are prepared by the thermal deposition of these materials on to glass substrates in a vacuum better than 10-5 Torr. The current–voltage–temperature characteristics of these ... -
Optimism: Its benefits and deficits on individuals' behaviors
(Nova Science Publishers, Inc., 2010)This chapter attempts to review and scrutinize the optimism concept and share these issues and evaluations with the readers. Although this chapter focuses on optimism mainly, it sometimes also refers to pessimism. Although ... -
EXTENSION OF THE SIMPLIFIED REAL FREQUENCY TECHNIQUE AND A DYNAMIC DESIGN PROCEDURE FOR DESIGNING MICROWAVE AMPLIFIERS.
(IEEE, New York, NY, USA, 1984)The simplified real frequency technique, which is qualitatively shown to offer better design performance over the other available techniques for broadband matching networks with lumped elements, is extended to incorporate ... -
COMPUTER AIDED DESIGN OF LOSSLESS TWO-PORTS FOR MICROWAVE CIRCUITRY.
(Elsevier, (Studies in Electrical and Electronic Engineering), Amsterdam, Neth, 1986)Numerical techniques which are specifically developed to generate realizable network functions are introduced. An algorithm to compute descriptive matrices of reactance two-port point by point is presented and theoretical ... -
Kizilcaoren; A health survey in an endemic fluorosis village
(1980)The fluoride content of the water supply in Kizilcaoren has ranged between 3.8 - 4.9 ppm presumably for abut 650 years. A survey conducted by the Anadolu University yielded data concerning the historical background, the ... -
Thyroid hormones mediated effect of insulin on alloxan diabetic rat atria
(1990)1. The influence of alloxan-induced diabetes was studied on spontaneously beating rat atria. Diabetic atria were found to have decreased rates, increased contractility and decreased responsiveness to both inotropic and ... -
Bradykinin receptors in isolated rat duodenum
(1990)Pharmacological properties of the bradykinin receptors in the isolated rat duodenum were investigated by examining the relaxant and contractile responses to bradykinin and [des-Arg9]-bradykinin, an agonist of B1 receptors. ... -
Internal auditing in the turkish banking sector
(1989)The origins of modern commercial banking in Turkey are closely interwoven with the problems of public finance in the 1840s. The first paper note issue of 1840 produced instability in the foreign exchange markets. So, in ... -
Epoxidation of Styrene with Aqueous Hypochlorite Catalyzed by a Manganese (III) Porphyrin Bound to Colloidal Anion-Exchange Particles
(1991)Epoxidation of styrene in aqueous sodium hypochlorite solution was catalyzed by the tetrasodium salt of 5,10,15,20-tetrakis(2,6-dichloro-3-sulfonatophenyl)porphinatomanganese(III) chloride (1). Manganese porphyrin 1 was ... -
Designing instructional materials with desktop publishing software: The effect of white-space variations on learning
(1992)As more and more people gain access to personal computers and powerful desktop-publishing software, many teachers and trainers are producing their own instructional materials using desktop publishing. The new desktop-publishing ... -
Alkaloids and a lignan from Aristolochia ponticum
(1991)A methanolic extract of the roots of Aristolochia ponticum has yielded two aristolochic acid derivatives, three aristolactams and a 2,3,4,5-substituted furan lignan. The known compounds aristolochic acid I, aristolochic ... -
Modeling and applications of space manipulators
(Publ by ASME, New York, NY, United States, 1992)To control robot or teleoperated manipulators in space, the motion of the satellite (which is actually the base of the manipulator) which will move due to the force exerted by the moving manipulator, must be considered. ... -
Decentralized optimal control for uncertain systems
(Publ by American Automatic Control Council, Green Valley, AZ, United States, 1992)Performance robustness problem for decentralized control systems is discussed within a state-space framework. The performance is measured with a quadratic index. Both structured and unstructured perturbations of the system ... -
Froth washing technology in mechanical flotation machines
(1992)This paper concentrates on the five recent plant trials/applications of froth washing in mechanical flotation cells in North America. Increased froth cleaning yielded better upgrading and some cases slightly improved ... -
Studies on the extraction of Pinus brutia bark using the Gulbaran extractor-diffuser
(1990)In this study, extraction of Pinus brutia bark is performed using a new extractor-diffuser system. This new extraction system uses a moving bed of bark which is continuously washed with fresh solvent sprayed from mobile ...
