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Toplam kayıt 10117, listelenen: 1-20

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Selective extraction techniques in exploration for volcanogenic sulphide deposits, Eastern Black Sea region, Turkey

Çag̃atay, M.N. (1984)

Selective extraction techniques employing 0.05 M EDTA, 1 M hydroxylamine hydrochloride (Hxl) in acetic acid and 0.157 M ammonium oxalate in oxalic acid were used to assess the mode of occurrence of the trace elements in ...
Influence of emotional distress among supporters on the outcome of psychogeriatric day care

Gilleard, C.J. (1987)

From a sample of consecutive referrals for psychogeriatric day care, the influence of the supporters' emotional distress and self-reported strain, together with the number of problems presented by the patient, was examined ...
Determination of bismuth, cadmium and lead in soil extracts by atomic absorption spectrometry with loop sample introduction

Gücer, S.; Demir, M. (1987)

Bismuth, cadmium and lead in soil extracts with aqua regia, 2 M nitric acid, 2.5% acetic acid or ammonium acetate solution from top-soils at different locations in Turkey, were determined by atomic absorption spectrometry ...
Euclidean supersymmetry and relativistic two-body systems

Aydin, Z.Z.; Yilmazer, A.U. (1988)

The supersymmetric generalization of the Schrödinger equation proposed recently by Sokatchev and Stoyanov is enlarged to cover minimal electromagnetic interactions. The model is extended to two-particle systems, and ...
A novel variation of the coordinate transformation method with perturbation technique for diffusion-controlled moving boundary problems

Özis, T. (1989)

A novel variation of the coordinate transformation method with perturbation technique is given for solving the general problem of a frozen solid cooled by convection at a wall in contact with a throughly mixed liquid kept ...
Some aspects and consequences of the agricultural price interventions in Turkey

Olgun, H. (1989)

This paper delineates the phases of agricultural pricing policies applied in Turkey since 1950 and examines the links between the phases and the effects of the interventions. It shows that both the sector specific and ...
RESEARCH NOTE EFFECT OF SELECTED ADDITIVES ON THE FLOW PARAMETERS OF 1:1 MIXTURES OF CARRAGEENAN‐GUAR AND CMC‐LOCUST BEAN GUM

GENCER, G. (1989)

Flow parameters of 1:1 mixtures of carrageenan‐guar and CMC‐locust bean gum in the presence of common food ingredients, namely, sugar, salt and proteins, were determined by using a coaxial viscometer. The effect of additives ...
Low temperature carbonization of tunçbilek lignite. Effectiveness of carbonization for desulfurization

Ceylan, K.; Olcay, A. (1989)

Total sulfur and ash sulfur contents as well as gross heating values of the chars obtained by the carbonization of Tunçbilek lignite at 350, 400, 425 and 450°C have been determined as a function of the duration of ...
Stability analysis of constraints in flexible multibody systems dynamics

Ider, S.K. (1990)

Automated algorithms for the dynamic analysis and simulation of constrained multibody systems assume that the constraint equations are linearly independent. During the motion, when the system is at a singular configuration, ...
Investigation of Contents of Some Elements in Soil and Apricots by Atomic Absorption Spectrometry

Esen, T.; Gücer, S.; Demir, M. (1990)

In this work, the relationship between the concentrations of six metals (Cd, Zn, Mn, Pd, Cu, Fe) in acetic acid extracts (2.5%) of soil and their respective concentrations in apricots grown in the same soil has been ...
Characterization of dissolution products from two turkish lignites by 1H NMR, IR and GC techniques

Ceylan, K. (1991)

Some structural features of the dissolution products from two Turkish lignites (Beypazari and Tuncbilek lignites) have been investigated with proton nuclear magnetic resonance and infra-red spectroscopies and gas chromatography. ...
ASSESSMENT of the EXPONENTIAL MODEL to SOUR CHERRY JUICE FILTRATIONS

SAHIN, S.; BAYINDIRLI, L. (1991)

De La Garza and Boulton's “Exponential model” of wine filtrations simulated the data satisfactorily in the cake filtration of sour cherry juice. There was an inverse relation between the filtration rate and the resistance. ...
An efficient approach to the solution of the two-dimensional electrochemical machining problem

Ozis, T. (1991)

A numerical procedure for calculating the solution of the two-dimensional time-dependent electrochemical machining moving boundary problem is derived by using Boadway's transformation. The results are compared with those ...
Educational research in developing countries

Tandogan, M. (1991)
Reaction Pathways during Coprocessing. Reaction of Illinois No. 6 and Wyodak Coals with Lloydminster and Hondo Residua under Mild Conditions

Ceylan, K.; Stock, L.M. (1991)

Illinois No. 6 and Wyodak coals were coprocessed with Lloydminster and Hondo residua. The reactions were carried out in argon or in dideuterium with and without a catalyst at 400 °C for 1 h. The coal conversions under these ...
On the existence and uniqueness of a weak solution of a nonsteady transient free-boundary problem in porous media

Ozis, T. (1991)

A nonsteady transient free-surface seepage through a dam with rectangular cross-section is considered. The model problem is reduced to variational inequality by Baiocchi transformation; then the solution of the problem is ...
The extension of Boadway's transformation technique to two or more dimensional moving boundary problems

Ozis, T. (1991)
The first neutral, mononuclear 4f metal thiolates and new methods for corresponding aryl oxides and bis(trimethylsilyl)amides

Cetinkaya, B.; Hitchcock, P.B.; Lappert, M.F.; Smith, R.G. (1992)

The first neutral, mononuclear 4f thiolates, [Sm(SAr)3] 1 and [Yb(SAr)2(dme)2] 2, have been prepared, and X-ray characterised [<Sm-S> 2.645(9) Å, <Yb-S> 2.756(8) Å], 1 from [Sm(CHR′2)3] + 3ArSH and 2 from ...
Synthesis and characterisation of unusual tetraaminoalkenes (enetetramines)

Çetinkaya, E.; Hitchcock, P.B.; Jasim, H.A.; Lappert, M.F.; Spyropoulos, K. (1992)

Two general routes are described for the synthesis of the title compounds from the reaction of either (A) the dimethyl acetal of N,N-dimethylformamide and an appropriate N,N′-bis(secondary amine), or (B) sodium hydride and ...
Dissolution of two Turkish lignites in tetralin under hydrogen or nitrogen: effects of the extraction parameters on the conversion

Ceylan, K.; Olcay, A. (1992)

Two Turkish lignites were extracted with tetralin in a batch autoclave under nitrogen or hydrogen atmosphere. The isothermal extraction temperatures ranged from 325 to 425 °C at 25 °C intervals and the isothermal extraction ...

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