Wyniki wyszukiwania - Biblioteka Nauki

1

Leaf anatomy and hairs of Turkish Satureja L. [Lamiaceae]

100%

Satil F. , Kaya A.

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tom 49

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nr 1

67-76

EN

There are some taxonomic uncertainties within the Turkish members of Satureja. It is extremely difficult to distinguish some Satureja species because of their great morphological similarity. Satureja species are used as herbal teas and spices, and for this reason they are important commercial and medicinal plants. In this study, the leaf anatomy and hair features of species were examined by LM and SEM. The investigated species can be divided into two main groups, as bifacial and equifacial leaves according to mesophyll structure. They can be secondarily divided into two types based on the midrib region in cross section, as projecting or nonprojecting. Thirdly, two main vascular bundle types can be identified in transverse section according to the presence or absence of sclerenchyma. All species have glandular, peltate and capitate, and nonglandular hairs and diacytic stomata, but the covering hairs differ between species. The leaves of fifteen Satureja L. species were studied in order to assess anatomical variations that may serve as distinguishing characters, and to evaluate their significance for the taxonomy of the genus.

2

Fuzzy AHP–GOAL Programming Approach for a Supplier Selection Problem

80%

Sivrikaya B. T. , Kaya A. , Dursun M. , Çebi F.

Research in Logistics & Production

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2015

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tom Vol. 5, No. 3

271--285

EN

This paper presents an integrated evaluation approach for decision support enabling effective supplier selection and ordering processes in textile industry. The integrated evaluation method in this study includes two phases that consist of fuzzy AHP and goal programming approaches. Supplier evaluation and selection is a multi-criterion decision problem which includes both qualitative and quantitative factors. That’s why; firstly, linguistic variables expressed in trapezoidal fuzzy numbers are applied to assess weights and ratings of supplier selection criteria. Then a hierarchy multiple model based on fuzzy set theory is expressed and the geometric mean method of Buckley is used to aggregate pair wise comparisons. Finally, a goal programming model is built using the goals about coefficients of suppliers, total ordering cost, number of wrong deliveries, total delivery cost under the constraints of required minimum and maximum number of orderings and acceptable quality cost levels of each supplier and demand constraint of the product.

3

Mercury(II) Ions Transport from Aqueous Solutions Using Liquid Membrane Systems

80%

Alpoguz H. K. , Kaya A. , Sener I.

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2009

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tom Vol. 83, nr 11

2021-2033

EN

The transport behavior of Hg2+ from donor aqueous solution into a receiving aqueous solution through bulk and supported liquid membranes containing a calix[4]arene derivative 1 as a car rier was in ves ti gated. The kinetic parameters of bulk liquid membrane were analyzed as suming two consecutive, irreversible first-order reactions. The influence of temperature, stirring rate, carrier concentration and solvent on the kinetic parameters (k1, k2, Rm max , tmax, Jd max , Ja max ) has also been investigated. The activation energy values are calculated as 13.4 and 1.41 kcal mol–1 for extraction and reextraction, respectively. The activation energy values indicate that the process is diffusionally controlled by species. In addition, the transport behavior of Hg2+ from aqueous solution through a flat-sheet supported liquid membrane has been investigated by the use of calix[4]arene derivative 1 as carrier and Celgard 2500 as the solid support. A Danesi mass transfer model was used to calculate the permeability coefficients for each parameter (type of solvent and anion).

4

Studies on the aetiology and treatment of hypophosphataemia developed naturally in cattle from Van region of Turkey

80%

Kaya A. , Akgul Y. , Yuksek N.

Medycyna Weterynaryjna

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2008

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tom 64

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nr 02

EN

The study investigated the aetiology and treatment of cattle with symptoms of lameness, stiff gait and bone fractures in the Van region of Turkey. The study was performed on 200 diseased and 50 healthy cattle aged between 1-8 years old, of both sexes. Blood samples for haematological and biochemical analysis were taken once from the healthy animals and twice from the diseased animals. Fodder samples were also collected. Total protein levels and P values of the diseased animals before treatment compared to the healthy control animals were lower while ALP and Ca were higher. After treatment an increase in the total protein (P < 0.05) and P (P < 0.001) was observed, and a decrease in ALP (P < 0.001), and Ca (P < 0.05). Phosphorus concentrations in the fodder of the diseased animals were significantly lower. Analysis of the haematological, biochemical parameters of the animals and their fodder showed typical changes for hypophosphataemia. The diseased animals were treated by receiving unorganic P and vitamin D₃ injected intramuscularly and mineral suplementation which was administered orally. The animals were observed for 30 days. After treatment, the symptoms observed in the diseased animals disappeared gradually as well as pica symptoms. Supplementing P to the animal’s fodder is vital in order to avoid such problems in the future.

5

Evaluation of acute phase protein levels and some cytokine levels in pneumonic calves

70%

Akgul O. , Kozat S. , Ozkan C. , Kaya A. , Akgul Y.

Medycyna Weterynaryjna

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2019

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tom 75

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nr 03

EN

This study was carried out to determine the levels of various cytokines (TNF-α, IL-6, IL-8) and acute phase proteins (haptoglobin, C-reactive protein, serum amyloid A, alpha 1-acid glycoprotein, lactoferrin, and fibrinogen) in pneumonic calves, to reveal changes in these parameters depending on etiologic factors (bacterial, viral, bacterial + viral) in calf pneumonia, and to determine whether these parameters could be used for diagnosis and prognosis of the disease. The study was carried out on a total of 50 calves consisting of 10 healthy and 40 pneumonic animals aged 1 to 6 months. The pneumonic calves were classified into three groups: bacterial, viral and mixed (bacterial + viral). It was found that the levels of IL-6, IL-8, CRP, and TNF-α were statistically higher in the pneumonic calves than in the control group animals. It was found that the increase in levels of Serum IL-6, IL-8, and CRP were highest in the mixed infection group (bacterial + viral) and lowest in the virally infected group. Similarly, serum levels of Hp, CRP, SAA, α-1-AGP, and LF were found to be more statistically significant (P <0.01) in the infected calves than in the control group animals, but changes in fibrinogen levels were not statistically significant. Although the TP and ALB levels in the pneumonic calves were numerically higher than the same parameters in the control group, this was not statistically significant (P > 0.05). As a result, this study showed that serum levels of cytokines (IL-6, IL-8, TNF-α) and serum concentrations of acute-phase proteins (Hp, CRP, SAA, α-1-AGP, and LF) are significantly higher in the pneumonic calves than in the control group calves. Furthermore, the assessment of cytokine and acute phase protein levels can play an important role in the early diagnosis of calf pneumonia. This early diagnosis can help prevent deaths caused by pneumonia, which is the leading cause of major losses, and can also be helpful in the early treatment of pneumonia in the veterinary clinical field.

6

Adenosine deaminase in the diagnosis of white muscle diseases in lambs

70%

Altug N. , Agaoglu Z. T. , Yuksek N. , Kaya A. , Keles I.

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tom 62

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nr 09

1007-1010

EN

The aim of the study was to investigate the importance of ADA serum and its isoenzyme activity in diagnosing white muscle disease in lambs. The animal material used in the study was forty seven Akkaraman lambs - twenty seven of which had clinical signs of white muscle disease (white muscle disease group) and twenty healthy lambs (control group). Blood samples were taken and Se levels, CK, LDH, AST, ADA and ADA izoenzyme activity were determined. Following this, the animals in the white muscle disease group received 1 mg sodium selenit + 60 mg vitamin E intramuscularly as a single dose. Fourteen days following sodyum selenit + vitamin E application blood samples were again taken and the same analysis repeated. Apart from ADA2 activity, other enzyme activities were significantly high (p<0.001), and serum Se concentrations were significantly low (p<0.001) in animals of the white muscle disease group compared to the control group. When the parameters obtained from the white muscle disease group were compared before and after treatment it was indicated that all enzyme parameters decreased significantly (p<0.001) after treatment. On the other hand, serum Se concentration increased (p<0.01) after treatment in the diseased group. The results confirm that determining ADA serum and its isoenzymes, together with CK, LDH and AST values seems to be useful in diagnosing white muscle disease.

7

Prevalence of feline retrovirus infections in Van cats

70%

Yuksek N. , Kaya A. , Altug N. , Ozkan C. , Agaoglu Z. T.

Bulletin of the Veterinary Institute in Puławy

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2005

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tom 49

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nr 4

8

Variation Analysis of CMOS Technologies Using Surface-Potential MOSFET Model

61%

Mattausch H. J. , Yumisaki A. , Sadachika N. , Kaya A. , Johguchi K. , Koide T. , Miura-Mattausch M.

Journal of Telecommunications and Information Technology

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2009

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tom nr 4

37-44

EN

An analysis of the measured macroscopic withinwafer variations for threshold voltage (Vth) and on-current (Ion) over several technology generations (180 nm, 100 nm and 65 nm) is reported. It is verified that the dominant microscopic variations of the MOSFET device can be extracted quantitatively from these macroscopic variation data by applying the surface-potential compact model Hiroshima University STARC IGFET model 2 (HiSIM2), which is presently brought into industrial application. Only a small number of microscopic parameters, representing substrate doping (NSUBC), pocket-implantation doping (NSUBP), carrier-mobility degradation due to gate-interface roughness (MUESR1) and channel-length variation during the gate formation (XLD) are found sufficient to quantitatively reproduce the measured macroscopic within-wafer variations of Vth and Ion for all channel length Lg and all technology generations. Quantitative improvements from 180 nm to 65 nm are confirmed to be quite large for MUESR1 (about 70%) and Lmin(XLD) (55%) variations, related to the gate-oxide interface and the gate-stack structuring, respectively. On the other hand, doping-related technology advances, which are reflected by the variation magnitudes of NSUBC (30%) and NSUBP (25%), are found to be considerably smaller. Furthermore, specific combinations of extreme microscopic parameter-variation values are able to represent the boundaries of macroscopic fabrication inaccuracies for Vth and Ion. These combinations are found to remain identical, not only for all Lg of a given technology node, but also for all investigated technologies with minimum Lg of 180 nm, 100 nm and 65 nm.

9

Atropine sulphate test can be an aetiologic indicator of vagal bradycardia developed in a megaoesophagus case

61%

Keles I. , Altug N. , Kaya A. , Ozkan C. , Yuksek N. , Aslan L.

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tom 51

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nr 1

EN

An acquired megaoesophagus in a calf has been described. The diagnosis of megaoesophagus was made based on clinical and laboratory examinations, using contrast radiography, and necropsy findings. Atropine sulphate was used to enlighten the relationship between damage in the N. vagus and bradycardia, which developed in the megaoesophagus case.