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Search Results: 1 - 10 of 400803 matches for " M Yagmur "
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The effects of different sowing depth on grain yield and some grain yield components in wheat (Triticum aestivum L.) cultivars under dryland conditions
M Yagmur, D Kaydan
African Journal of Biotechnology , 2009,
Abstract: and yield components for wheat cultivars during 2004-2006 at one site in Van Province in Eastern Turkey. Grain yield and yield components were found to positively correlate with coleoptile length, with marked declines observed in grain yield and yield components among varieties with shorter coleoptiles in deepest sowing. Wheat sown at 5 cm gave greater yields than wheat sown at 3, 7 and 9 cm by 19.9, 22.3 and 62.5%, respectively. The highest grain yield (2.98 T ha-1) was obtained with the Alparslan cultivar sown at a depth of 5 cm. Grain yield of all varieties tested was drastically reduced when sown at depths of 9 cm, with the exception of the local Tir and Alparslan varieties, both of which, when compared to the other varieties tested, had longer coleoptiles.
xTriticosecale Witm, seed size, drought, germination, seedling growth.
D Kaydan, M Yagmur
African Journal of Biotechnology , 2008,
Abstract: Effect of seed size (small, medium and large) on germination and seedling growth of triticale (xTriticosecale Witm. cv. Presto) at the different osmotic potential of NaCl and PEG solutions were determined in the present study. Germination tests were conducted under five osmotic potential levels (-0.45, -0.77, -1.03, -1.44 MPa, and Control) of PEG 6000 and NaCl. Germination percentage (%) at 4 and 8th days and also seedling growth traits such as root and shoot length (mm), dry root and shoot weight (mg), root : shoot length (R:S) ratio, and relative water content of shoot (RWC, %) were investigated in this study. The results indicated that decreases in the osmotic potentials caused a reduction in germination percentage and seedling growth. It was seen that drought created by PEG 6000 had more negative effects on germination and seedling growth than that of NaCl. In consequence, the total germinability and seedling growth were higher in large seeds rather than in small seeds in control solution and under osmotic stress. In addition, it was observed that seedlings obtained from larger seeds survived even at the lower osmotic potential of PEG and NaCl; whereas, seedling obtained from small seeds did not survive in the intensive stress.
Alleviation of osmotic stress of water and salt in germination and seedling growth of triticale with seed priming treatments
M Yagmur, D Kaydan
African Journal of Biotechnology , 2008,
Abstract: Effects of seed priming treatments with 0.5% KH2PO4 (w/v) solution and water were determined on germination and seedling characters of hexaploid triticale (Triticosecale Witm., cv. Presto) in different osmotic potential of NaCl and PEG solutions. Drought and salt osmotic stress conditions were separately created by using PEG 6000 and NaCl, respectively, at different osmotic potentials (-0.45, - 0.77, -1.03 and -1.44 MPa and control). At the equivalent osmotic potential, the effects of PEG 6000 were more harmful than NaCl on germination and seedling stage. Germination percentage and seedling growth and also relative water content (RWC, %) decreased with the decrease in osmotic potential of PEG 6000 and NaCl. But root-to-shoot length ratios increased with the effects of osmotic stress of PEG 6000 and NaCl. Despite the negative effects of two stress conditions, the two priming treatments were effective in improving germination percentage and seedling growth in Presto. But seed primed treatment was effective at the lowest osmotic potentials; therefore, seedling growth survived at the highest concentrations. Consequently, the effect of hydropriming is very pronounced particularly in improving germination and seedling growth in low stress.
A newly described scorpion species, Leiurus abdullahbayrami (Scorpion: Buthidae), and the lethal potency and in vivo effects of its venom
Ozkan, O;Yagmur, EA;Ark, M;
Journal of Venomous Animals and Toxins including Tropical Diseases , 2011, DOI: 10.1590/S1678-91992011000400008
Abstract: currently, medically significant scorpion species belong to the buthidae family and are represented by the genera androctonus, buthus, mesobuthus, hottentotta, parabuthus, tityus, centruroides, leiurus. although leiurus was originally considered a monotypic genus, four additional species have since been described. leiurus abdullahbayrami (previously identified as l. quinquestriatus in turkey) was classified as a new leiurus species. this is the first report conducted on the lethality and biologic effects of l. abdullahbayrami scorpion venom in mice. in this study, the electrophoretic protein pattern of its venom was also determined. two protein bands with molecular masses of 4 and 6 kda were more strongly detected than other protein bands in the venom sample. electrophoresis showed that l. abdullahbayrami scorpion venom possesses both short- and long-chain neurotoxins. the median lethal dose of this venom was found to be 0.19 mg/kg by subcutaneous (sc) injection in mice. animals experimentally envenomed with l. abdullahbayrami venom exhibited hyperexcitability, agitation, aggressive behavior, squeaking and fighting, tachypnea, weakness, convulsions, and death due to cardiac and respiratory failure. in further studies, the potency of antivenom should be investigated in relation to the scorpion venom. molecular and pharmacological studies are also required to identify and characterize l. abdullahbayrami scorpion venom.
The Genital Hygiene Behaviors of the Females Aged 15-49 Living at the Firat Health Clinic Neighborhood in Malatya
Yurdagul Yagmur
TAF Preventive Medicine Bulletin , 2007,
Abstract: It is known that wrong and inappropriate hygienic applications damage the vaginal flora and causes a lot of health problems. The aim of this study was to define the females behaviors on genital hygiene, who live in a health center neighborhood. This descriptive study has been based on 400 females aged 15-49 living at the Firat Health Clinic neighborhood in Malatya. The randomized sampling method was used. The females were asked questions from a questionnaire form in their houses. The data were evaluated by using the SPSS for Windows version 10.0. Of the 37% females included in this study are graduated from the primary school, 66.3% of them are married, 87.8% of females are unemployed, and 54% are in average economic situation. Of the 71% women have a shower in every two-three days, 38% of them do not shower during their menses period, 56% of them change their underwear in every 2-3 days, 23.5% of the females use wash-and-use diaper during their menses period, 46.5% of them change 1-2 pads daily, 43% have a vaginal lavage. In addition 27% of the females are being diagnosed now and were being diagnosed before having genital tract infection. As a result of the study, some inadequate and improper applications regarding hygiene habits were detected among women. Thus, taking the educational and socio-economic status of the women into consideration, they should be given some training about protecting and improving health. Also it would be beneficial if the nurses and midwives questioned and informed the women about the genital hygiene behaviors during their house visits under the health services at first stage. [TAF Prev Med Bull. 2007; 6(5): 325-330]
Interface induced manipulation of perpendicular exchange bias in Pt/Co/(Pt, Cr)/CoO thin films
N. Akdogan,A. Yagmur,M. Ozturk,E. Demirci,O. Ozturk,M. Erkovan
Physics , 2013,
Abstract: Perpendicular exchange bias has been manipulated by changing ferromagnetic film thickness and spacer layer in Pt/Co/(Pt, Cr)/CoO thin films. The exchange bias characteristics, blocking temperature, magnetization of thin films strongly depend on the spacer layer (Pt, Cr) between ferromagnetic and antiferromagnetic layers. While Pt/Co/Pt/CoO thin films show perpendicular exchange bias, Pt/Co/Cr/CoO has easy magnetization axis in the film plane. We have also observed very small hysteretic behavior from the hard axis magnetization curve of Pt/Co/Cr/CoO film. This can be attributed to misalignment of the sample or small perpendicular contribution from Pt/Co bottom interface. We have also investigated the temperature and spacer layer dependent exchange bias properties of the samples by VSM magnetometry. We observed higher HEB and HC for the thicker Co layer in the Pt/Co/Pt/CoO sample. In addition, onset of exchange bias effect starts at much lower temperatures for Pt/Co/Cr/CoO thin film. This clearly shows that Cr spacer layer not only removes the perpendicular exchange bias, but also reduces the exchange interaction between Co and CoO and thus lowers the blocking temperature.
Intrathecal colistin for treatment of Pseudomonas aeruginosa ventriculitis: report of a case with successful outcome
Rezzan Yagmur, Figen Esen
Critical Care , 2006, DOI: 10.1186/cc5088
Abstract: Polymyxin B and polymyxin E (colistin) are the two polymyxins used in clinical practice. Colistin is a polymyxin-type antibiotic, disrupting the structure of Gram-negative organisms' cell membranes, rarely used parenterally because it has nephrotoxic side effects. The polymyxins are active against selected Gram-negative bacteria, including Acinetobacter species, Pseudomonas aeruginosa, Klebsiella species and Enterobacter species [1]. We report a case of multidrug-resistant P. aeruginosa ventriculitis treated successfully with intrathecal colistin.A 16-year-old boy who had a car accident required hospitalization and underwent multiple surgeries, including decompressive craniectomy and placement of ventriculoperitoneal and ventriculoatrial shunts. The ventriculoatrial shunt subsequently became colonized with P. aeruginosa and was removed, and was then replaced with an external ventricular drainage catheter. Cerebrospinal fluid cultures demonstrated multiresistant P. aeruginosa. Intravenous amikacin was initiated initially but there was no change in the patient's clinical situation. Therapy was then changed to intrathecal colistin 5 mg/day via the external ventricular drainage catheter, and the cerebrospinal fluid white blood cell counts and cerebrospinal fluid cultures were followed to assess efficacy. The patient's response to therapy was observed with a decrease in the cerebrospinal fluid white blood cell count in the following days and with subsequent sterilization of cultures. His clinical situation became well and weaning from the mechanical ventilation was initiated.There are few case reports about the treatment of ventriculitis with intrathecal use of colistin. In a case report, meningitis caused by a multiresistant Gram-negative rod was successfully treated with intrathecal colistin 5 mg/day on day 1 and with 10 mg intrathecal colistin per 24 hours for 21 days thereafter [2].We used intrathecal colistin 5 mg/day for 21 days for the treatment of multidrug-resis
Aromatase inhibitors and antiepileptic drugs: a computational systems biology analysis
Yagmur Muftuoglu, Gabriela Mustata
Reproductive Biology and Endocrinology , 2011, DOI: 10.1186/1477-7827-9-92
Abstract: Through a pharmacophore search, this study shows that a model previously designed to search for new classes of aromatase inhibitors is able to identify antiepileptic drugs from the set of drugs approved by the Food and Drug Administration. Chemical and structural similarity analyses were performed using five potent AIs, and these studies returned a set of AEDs that the model identifies as hits.The pharmacophore model returned 73% (19 out of 26) of the drugs used specifically to treat epilepsy and approximately 82% (51 out of 62) of the compounds with anticonvulsant properties. Therefore, this study supports the possibility of identifying AEDs with a pharmacophore model that had originally been designed to identify new classes of aromatase inhibitors. Potential candidates for anticonvulsant therapy identified in this manner are also reported. Additionally, the chemical and structural similarity between antiepileptic compounds and aromatase inhibitors is proved using similarity analyses.This study demonstrates that a pharmacophore search using a model based on aromatase inhibition and the enzyme's structural features can be used to screen for new candidates for antiepileptic therapy. In fact, potent aromatase inhibitors and current antiepileptic compounds display significant - over 70% - chemical and structural similarity, and the similarity analyses performed propose a number of antiepileptic compounds with high potential for aromatase inhibition.The need to discover and develop new antiepileptic drugs (AEDs) is clear. The adverse side effects of the existent therapies - from cognitive impairment [1] to depression, anorexia, somnolence [2], and even birth defects [3] - have long been reported. Even the newer anticonvulsant medications have offered little relief [1,2]. In fact, harmful side effects seem to be the most significant factor in the approximately 35% long-term or 3-year retention rate for all new AEDs [1]. As a result, less toxic and more tolerable AEDs are
Starlikeness and Convexity of Generalized Struve Functions
Nihat Yagmur,Halit Orhan
Abstract and Applied Analysis , 2013, DOI: 10.1155/2013/954513
Abstract:
Different Intercrop Arrangements with Lentil and Barley under Dryland Condition
Mehmet Yagmur,Digdem Kaydan
Pakistan Journal of Biological Sciences , 2006,
Abstract: This study was carried out to evaluate the performance of different intercrop arrangements with lentil and barley crops under dryland condition. This experiment was conducted in field conditions in Van, eastern of Turkey (38°-55`N, 2°-05`E, 725 m above sea level) in 2004-2005 in winter growing seasons. In this study, all intercrop arrangements affected on yield and yield components of barley and lentil significantly. Intercrop arrangements reduces all yield components except plant height of lentil. In barley, all intercrop arrangements increased plant height. Separately, mixing intercrop arrangement reduced number of seed per spike and seed weight per spike of barley compared to sole barley. Row cropping arrangement increased number of seed per spike and seed weight per spike of barley. The highest land equivalent ratio for straw was determined by 100% barley + 60% lentil and 100% barley + 40% lentil mixtures with 1.34 and 1.29, respectively. The highest LER for seed was obtained 100% barley + 20% lentil mixtures as 1.20 LER.
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