Scopus İndeksli Yayınlar Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/20.500.14720/4

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The Drawbacks of Rural Development in a Developing Country
(1985) Ahmet, A.
The Mutagenic Effects of Sodium Nitrite and Monosodium Glutamate Used as Food Additives Demonstrated by the Salmonella Microsome Test System
(1991) Akin, A.; Sümer, S.
In this study, the mutagenicity of sodium nitrite (an antimicrobial agent) and monosodium glutamate (a flavoring agent), which are widely used as food additives, have been evaluated. They were tested for mutagenicity in the Salmonella/microsome test system by employing plate-incorporation test in the absence and presence of rat-liver fraction, S 9. No mutagenic activity was seen for monosodium glutamate in the Salmonella/microsome test system by using the tester strains Salmonella typhimurium TA98, TA100, TA1535 and TA1538. Sodium nitrite was found mutagenic on S. typhimurium TA1535, whereas it was found weakly mutagenic on S. typhimurium TA100, in the presence and absence of rat-liver fraction, S 9.
Relationship Between Ethylene Adsorption-Isotherms and Gc Retention on Carbowax-Coated Porous Graphite
(Friedr Vieweg Sohn verlag Gmbh, 1992) KNOX, JH; CEYLAN, H
The objective of this work was to correlate adsorption isotherms of ethylene at -78-degrees-C on porous graphitic carbon (PGC) with gas chromatographic performance, the intention being that such isotherms could be used as a quality control test for PGC's in general, whether used for GC, HPLC or other adsorptive purposes. GC of test solutes shows that severe peak tailing on bare PGC is removed almost totally by a coating PGC with as little as 0.05% by weight of Carbowax 1500. Surprisingly there is little corresponding change in the ethylene adsorption isotherms, although it is possible to distinguish small differences at surface coverages below 5 % of a monolayer of ethylene. Further work is required to establish a useful QC test.
The Effect of The Chemical Environment on The K-beta/K-alpha X-Ray Ratio
(Editrice Compositori Bologna, 1993) KUCUKONDER, A; Şahin, Y; Büyükkasap, E
Chemical effects on the Kbeta/Kalpha X-ray intensity ratios were investigated for different constitutions of Ti, V, Fe, Se, Br, Zr and Ce by a Ge(Li) X-ray detector. The vacancies were produced by heavily filtered Am-241 gamma-rays. It is found that the Kbeta/Kalpha X-ray intensity ratios measured with compounds deviated up to 12% from the corresponding values of the pure elements (Ti, V, Fe) are larger than for the others (Se, Br, Zr and Ce).
Phytosociological Investigation on the Macrophytic Vegetation of Lake Van
(1994) Behcet, L.
Lake Van has salt (soda) characteristics. Nine associations and two subassociations were described. The Potametum pectinati association was described in water. On the lake shore where the salt effect is high, mainly Puccinellietum gigantae, Carici-Menyanthetum trifoliatae and Triglochino-Bolboschoenetum maritimi were described. In places with salt, near to mouth of rivers flowing into Lake Van, Butometum umbellati, Sparganietum erecti, Scorzonereetum parviflorae (in the pasture with bad drainage lying at the back of marshy and muddy areas) and in flooded-beds Alopecuretum arundinaceae were described. Phragmitetum australi was the most tolerated association against ecological factors such as water level, saltness, etc. -English summary
K-Beta Intensity Ratios Following Radioactive Decay and Photoionization
(Akademiai Kiado, 1994) BUYUKKASAP, E; KUCUKONDER, A; SAHIN, Y; ERDOGAN, H
Kbeta/Kalpha intensity ratios for Cr, Mn, Fe, Cs and Ba have been measured following radioactive decay and photon excitation. A Ge(Li) detector coupled to an ND66B analyzer was used in the measurements. The Kbeta/Kalpha intensity ratio is affected by the mode of excitation. This effect has a significant influence on Kbeta/Kalpha intensity ratios of 3d shell elements (Cr, Mn, Fe). However, the effect was found smaller for Cs and Ba.
Incoherent-Scattering of 59.5-Kev Gamma-Rays by Light-Elements, Medium-Elements and Heavy-Elements
(Editrice Compositori Bologna, 1994) KURUCU, Y; Erzeneoğlu, S; Şahin, Y; Durak, R
Total atomic incoherent-scattering differential cross-sections were determined experimentally for 59.5 keV gamma-rays in Ti, Ni, Zn, Se, Mo, Ru, Cd, Sn, Te, Yt, W and Pb at 120 degrees scattering angle using Ge(Li) detector. The background correction and detection efficiency are also included in the study. The experimental values have been compared with those estimated on the basis of the non-relativistic Hartree-Fock wave functions. Good agreement is observed between theory and experiment.
The Identification of Streptomyces Isolated From Environmental Soil Samples With Hypal Mycelium Inoculum on Computer-Assisted Identification
(Marcel dekker inc, 1994) Atalan, E
Representatives of Streptomyces strains isolated from environmental soil samples were subjected to identify for the diagnostic characters recommended by Williams el of. (1983b) as a duplicate. Diagnostic characters were tested using a mixture of spores and mycelial fragments, respectively, in order to identify some Streptomyces species and strains on computer assited identification. Most of the marker strains were identified to tile correct clusters. In Contrast, 20 strains out of 38 unknown strains were assigned to any major cluster described by Williams et al. (1983a). Computer-assisted identification procedure has provided reliable identification scores for marker or unknown strains.
Analysis of Binary-Systems With Rayleigh and Compton Scattered Photons
(Marcel dekker inc, 1995) DURAK, R; Ertuğrul, M; Erzeneoğlu, S; Kurucu, Y; Şahin, Y
Chemotaxonomic and Molecular Methods Applied To the Polyphasic Classification of Streptomyces Strains
(1995) Atalan, E.
Whole-organism protein of 9 test strains and fatty acid profiles for 12 test strains were analyzed for polyphasic taxonomy of strains isolated from soil samples. Representatives of test strains belonging to the same group were clustered into discrete groups after performing numerical analysis of the whole-organism protein profiles using the Pearson product moment correlation coefficient, and unweighted pair groups by using the arithmetic averages algorithm. Also, the test strains in same group were recovered in three well-separated clusters when the fatty acid profiles were analyzed quantitatively, or rather, by using Euclidean distances of the fatty acids with unweighted pair group method with arithmetic averages algorithm.
An Anatomical Study on the Arteries To the Left Adrenal-Gland of Sheep and Goat
(verlag Hans Huber, 1995) KARADAG, H
The arteries supplying the left adrenal gland were determined in 12 mature sheep and goats of both sexes and different breeds. The adrenal branches arose from the first and second lumbal arteries in both species but in one goat they originated from the first lumbal artery while in another from the last intercostal artery. The cranial adrenal branches arose from the celiac artery in 8 sheep, both from the celiac and cranial mesenteric arteries in 3 sheep and from the common celiacomesenteric trunk in 1 sheep. In all goats the cranial adrenal branches originated from the cranial mesenteric artery. The caudal adrenal branches arose singly from the renal artery in all sheep and goats. In both species any branch from the aorta or caudal phrenic arteries to the adrenal gland was not seen.
Torsion of a Spermatocele
(Williams & Wilkins, 1995) ODABAS, O; Aydın, S; Yılmaz, Y
Pyrolysis of Black Liquor by Using Some Basic Catalysts
(Marcel dekker inc, 1995) KUCUK, MM
Catalytic pyrolysis for the production of liquids and gases from acidic precipated of black liquor was carried out by using CaO and CuCO3.Cu(OH)2 catalysts. This process has been studied in the temperature range from 463 to 570 K. Pyrolysis of black liquor in the temperature range 463-570 K gave yields which increased from 25.9 to 29.0% as the catalyst percentages was increased from 5 to 20% for CaO. Under the same conditions, the yields of pyrolysis increased from 25.5 to 28.3 for CuCO3.Cu(OH)2.
Comparing of the Maximum Likelihood (Ml) and the Least Squares (Ls) Methods in Terms of Variance Components for Unequal Numbers of Abservations in Subclasses
(Scientific and Technical Research Council of Turkey, 1996) Orhan, H.; Okut, H.
In this study, two parameter estimators. Maximum Likelihood (ML) and Least Squere (LS) methods, have been compared in case of random and mixed model conditions with respect to the efficiency of the estimated parameters. According to results obtained, ML method should be preferred to LS method in the case of random and mixed models for unequal numbers of observation in subclasses.
Lumbosacral Angle in Lowback Pain
(1996) Tekeoglu, I.; Adak, B.; Bozkurt, M.; Kara, M.; Aydinhoglu, A.
Fifty patients with low back pain were evaluated for a possible relationship between the increase of lumbar lordosis (Ferguson's angle) and a group of chronic low back pain disorders such us fibromyalgias, lumbar disc degeneration, lumbar disc bulging, lumbar arthrosis and pain due to segmental instabilite. Another group consisted of thirty-eight healthy subjects who has never claimed previous backpain history were undergone spinal x-ray as a control group. The angle between a line parallel to the cranial end plate of S 1 vertebrae and a horizontal line was defined for the Ferguson's angle. In both groups patients were 30 years old or over. We also measured spinal instability in both groups by a vertical line from the middle of the corpus of L 3 vertebrae. The results showed that in the low back pain group there was a statistically significant increase in the Ferguson's angle and 62% of this group had spinal instability. In the control group the Ferguson's angle was in normal range and only 4% of them had spinal instability.
A Research on Determination of Favorable Sowing Methods for Some Bread Wheat Varieties (T. Aestivum Spp.) Under Van Ecological Conditions
(1996) Yilmaz, N.; Sepetoǧlu, H.
This study was carried out under Van ecological conditions in 1986-87 and 1987-88 vegetation periods. Three bread wheat varieties (305 Yayla, Tir Wheat, 220/39 Kose) was sowing by Tir and normal wheat drill and yield and yield components was determined. The result of this study, according to years the highest yield was different but is was obtained from 305 Yayla variety which was sowing by normal drill. The lowest yield was obtained from 220/39 Köse which was sowing by Tir drill.
The Acute Anomaly of Intestinal Non-Rotation
(1996) Dilek, O.N.
Intestinal non-rotation is a rare fetal disorder of the intestine. It is seen very rarely in adults and may present acutely as bowel obstruction. Surgical intervention is frequently delayed in these patients due to atypical symptoms. The classical surgical treatment for intestinal non-rotation is the Ladd procedure which consists of lysis of duodenal adhesions and placement of the cecum into the left upper quadrant. In this article, we present a 62 year-old man who had volvulus of the right colon caused by intestinal non-rotation. The patient underwent a right hemicolectomy and end-to-end ileotransversostomy. The postoperative period was uneventful, and the patient is asymptomatic at the 9th month of follow-up.
Serum and Tissue Levels of Vitamin a and E in Gastric and Esophageal Cancer
(1996) Turkdogan, M.K.; Testereci, H.; Kahraman, T.; Tuncer, I.; Algun, E.; Yoruk, I.H.
Vitamin A and Vitamin E have antioxidant properties and their role in the prevention of gastrointestinal cancers by way of scavenging lipid peroxidation products is very important. Vitamin A ester (retinol acetate) and vitamin E isomers (alpha, gamma and total tocopherols) have been investigated in the serum samples and tissue biopsies of 7 esophageal, 12 gastric cancer patients and a control group consisting of 12 healthy subjects. The serum mean retinol acetate level was significantly higher in the gastric cancer group but not in patients with esophageal cancer when compared to the control group. Serum mean tocopherol levels were low in both cancer groups when compared to the control group but this did not reach biological significance. Tissue mean retinol acetate and tocopherol levels were found significantly low in both of the cancer groups (p<0.03 and p<0.08). These findings suggest that the low tissue levels of the antioxidant vitamin A and E may be related to the etiopathogenesis of the gastrointestinal cancers.
Suicidality in Patients With Panic Disorder: the Association With Comorbidity
(Editions Scientifiques Elsevier, 1996) Agargun, MY; Kara, H
To examine the relationship between suicidality and panic disorder, we evaluated 91 patients with panic disorder. Patients with comorbid diagnosis were more suicidal than patients with pure panic disorder. These data suggest that among patients with panic disorder, suicidal behavior is associated with comorbid diagnosis.
Boundedness and Stability Properties of Solutions of Certain Fourth Order Differential Equations Via the Intrinsic Method
(1996) Tiryaki, A.; Tuna, C.
In this paper, firstly a Lyapunov function is derived for (1.2) by applying the intrinsic method introduced by Chin[6], Secondly equation (1.2) is examined in two cases: (i) P s 0, (ii) P ∗ 0. For case (i) the asymptotic stability in the large of the trivial solution x = 0 is investigated and for case (ii) the boundedness results are obtained for solutions of equation (1.2). These results improve and include several well-known results. © 1996, Oldenbourg Wissenschaftsverlag GmbH, Rosenheimer Str. 145, 81671 München. All rights reserved.

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