Detaylı Arama

İptal
Bulunan: 203 Adet 0.001 sn
- Eklemek veya çıkarmak istediğiniz kriterleriniz için 'Dahil' / 'Hariç' seçeneğini kullanabilirsiniz. Sorgu satırları birbirine 'VE' bağlacı ile bağlıdır.
- İptal tuşuna basarak normal aramaya dönebilirsiniz.
Filtreler
Filtreler
Bulunan: 203 Adet 0.001 sn
Koleksiyon [20]
Tam Metin [2]
Yayın Türü [7]
Yazar [20]
Yayın Yılı [1]
Konu Başlıkları [20]
Yayıncı [20]
Yayın Dili [3]
Dergi Adı [20]
Weighted approximation of unbounded continuous functions by sequences of linear positive operators

Coskun T.

Article | 2003 | Indian Journal of Pure and Applied Mathematics34 ( 3 ) , pp.477 - 485

We prove two weighted Korovkin type theorem on the approximation of unbounded continuous functions by linear positive operators on the whole real axis. A construction of a sequence of linear positive operators is given which satisfies our results by applying to Gadjev-Ibragimov operators.

Reactivity and characterisation of various rank turkish bituminous coal chars

Kizgut S. | Baran Y. | Cuhadaroglu D.

Article | 2003 | Journal of Thermal Analysis and Calorimetry71 ( 3 ) , pp.857 - 865

A set of seven bituminous coal chars has been characterised by IR spectroscopy (FTIR), thermogravimetry (TG) and elemental analysis. FTIR study provided suitable information to establish differences between coal samples according to their chemical compositions. The reactivity of these samples was also studied and correlated with the coal parameters of mean vitrinite reflectance, fuel ratio and H/C ratio. The data suggest that reactivity as determined can be correlated with the mean vitrinite reflectance, fuel ratio and H/C ratio (0.90). The order of reactivity of samples were; Amasra (S1) (Rm= 0.65)>Azdavay (S4) (Rm=0.99)?Armutcu . . .k (S2) (Rm=0.81)?Acenta (S3) (Rm=0.92)>Ac212k (S6) (Rm=1.11) Cay (S5) (Rm=1.03)>Sogutozu (S7) (Rm=2.14) Daha fazlası Daha az

2019-12-23

Babuccu, O

Letter | 2003 | TRANSPLANT INTERNATIONAL16 ( 1 ) , pp.58 - 60

WOS: 000181025700010 PubMed: 12545343

The effect of Polystimulin-A6 on some morphological properties of beech seedlings (Fagus orientalis L.)

Kirdar, E | Allahverdiev, S

Article | 2003 | ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE53 ( 4 ) , pp.200 - 207

An investigation was carried out to consider the effect of polystimulin-A6 on the growth of beech seedlings. A total of 1200 seedlings treated with Polystimulin-A6 at four different concentrations, and a total of 300 control seedlings, were investigated taking account of height, collar diameter, dry weight, number and size of leaves. The greatest height and collar diameter were found with the treatment Polystimulin-A6 at 200 mg/l. In contrast, the control treatment resulted in the least height and collar diameter. The greatest seedling height measured 52.77 cm at the 200 mg/l level, compared with 38.37 cm for the control seedlings. . . .The greatest root collar diameter measured 16.44 mm with the transplanted seedlings, while the least measured 7.01 mm. with the control seedlings. Also, seedling dry weight, root percentage, number and size of leaves were higher than the control. To conclude, it is obvious that Polystimulin-A6 is very effective and has contributed significantly to the metabolism of Fagus orientalis L . seedlings. According to this study, the application of Polystimulin-A6 to beech seedlings has been recommended for practical use in nursery situations Daha fazlası Daha az

Posterior interosseous artery flap in traumatic hand injuries

Ege A. | Tuncay I. | Erçetin Ö.

Article | 2003 | Archives of Orthopaedic and Trauma Surgery123 ( 7 ) , pp.323 - 326

Introduction: Nineteen cases of posterior interosseous artery (PIOA) flap were reviewed. The patients' mean age was 24 (range 14-53) years. Materials and methods: Nine patients were operated on as emergencies, and 10 patients were treated electively. Mean time of delay after trauma was 7.8 h (range 2-20 h) in emergency cases. Nine of them were non-replantable amputations. Skin defects were between 1.9×2.4 cm and 5.0×12.0 cm. Mean hospitalization time was 2.2 (range 1-5) days. Results: Mean flap sensation was evaluated as 2.83-6.65 with the Semmes-Weinstein evaluation scale (only 2 patients scored less than 3.61). Five patients prese . . .nted with discoloration and coolness. Average subjective evaluation was 8.2/10. Mean web opening after first web reconstruction was 40°. One posterior interosseous neuropraxia (recovered in 4 months), one distal flap necrosis, and one flap lost (due to infection) occurred as early complications. Mean follow-up was 12.8 months (range 15 days to 30 months). Conclusions: PIOA flap applications have reduced the need for lateral arm and radial forearm flaps and also shortened hospitalization time in clinical practice Daha fazlası Daha az

Contributions to the knowledge of conifer aphid fauna in Turkey and their zoogeographical distribution

Kaygin A.T. | Çanakçioglu H.

Article | 2003 | Anzeiger fur Schadlingskunde76 ( 2 ) , pp.50 - 56

The Aphidoidea (Homoptera) has 29 species which attack coniferous trees in Turkey. The family Aphididae has 25 (Aphidinae, 1; Lachninae, 22; Mindarinae, 2) species and the Adelgidae, 4. The tribe Cinarini in Lachninae has alone 22 species most of which are important. Especially Cinara cedri Mimeur on Cedrus libani and C. pilicornis (Hartig) on Picea spp. are harmful species. Schizolachnus pineti (Fabricius) is also very important. An Eastern Palearctic species in the tribe Macrosiphini in Aphidinae, Elatobium momii (Shinji), is numerous on Abies bornmülleriana in Bursa-Uludag forests. Pineus orientalis (Dreyfus) in the family of Ade . . .lgidae (Chermesidae) is the most destructive in our Picea orientalis forests in Artvin area (Eastern Black-Sea Section). 21 species out of 29 aphids on coniferous trees are of European origin; only 4 are Mediterranean, 2 Caucasus and Turkistan, one Eastern Palearctic and one of Cosmopolitan origin Daha fazlası Daha az

Türkiye'de Kayıtdışı Ekonominin Tahmini

Çetintaş, Hakan | Vergil, Hasan

Article | 2003 | Doğuş Üniversitesi Dergisi4 ( 1 ) , pp.15 - 30

Bu çalışmada 1971 ve 2000 yılları arasında Türkiye'de kayıtdışı ekonominin büyüklüğü Tanzi'nin metodolojisinden yararlanılarak ekonometrik olarak tahmine çalışılmıştır. Nakit para talebi kullanılarak yapılan çalışmada, 2000 yılında kayıtdışı ekonominin resmi ekonomiye oranı %24 olarak tahmin edilmiştir. In this study, size of the underground economy in Turkey is estimated econometrically by using Tanzi's methodology in period 1971-2000. According to currency demand approach, the ratio of the underground economy to official one is estimated 24 percent in 2000.

Galvanizli çeliklerin mikroyapısı

Baycık, Handan | Koltuk, Fatmagül | Müftüoğlu, Füsun

Article | 2003 | Mühendis ve Makina44 ( 525 ) , pp.27 - 31

Metal korozyonunu engellemek için kullanılan değişik yöntemlerden biri yüzey kaplamadır. Yüzey kaplama için çeşitli yöntemler kullanılır. Metalik kaplama yöntemleri içinde yer alan çinko kaplama, galvanizleme olarak adlandırılır. Galvanizleme genellikle, sıcak daldırma, elektroliz veya metal püskürtme yöntemleri ile yapılır. Bilindiği gibi, galvanizli malzemeler inşaat, konstrüksiyon, otomotiv ve beyaz eşya sanayiinde kullanılmaktadır. Bundan dolayı, galvanizleme konusundaki gelişmelerin tüm toplumu etkileyeceği açıktır. Bu makalede, sıcak daldırma yöntemi ile galvanizleme ve çinko kaplama tavı (galvannealing) yaparak elde edilen ma . . .lzemelerin mikroyapıları incelenmiştir. Galvanizlemede, kaplama yapısı genellikle çelik, $Gamma$, $delta$, $zeta$ ve $eta$ fazlarından oluşur. Çinko kaplama tavında yapı çelik, $zeta$ fazı, $Gamma$ fazı ve yüzeyde küçük bir miktar $zeta$ fazı ile büyük miktarda $delta$ fazı içerir. Surface coating is one of the various methods used for preventing of metal corrosion. Different methods are available for surface coating. Zinc coating which takes part in the metallic coatings methods, is named galvanizing. Galvanizing is usually applied with hot dip, elektrodeposition or metal spraying methods. As it is known, galvanized steels are used for building, construction, automotive industry and electrical goods (refrigerator, oven etc.). Therefore, it is clear that, developments about galvanizing affect all society. In this article, microstructures of the materials galvanized with hot dip method and galvannealed have been examined. In galvanizing, the coating structure generally made up of steel, $Gamma$, $delta$, $zeta$ and $eta$ phases. In galvannealing, the structure comprises steel, $zeta$ phase, $delta$ phase and in the surface small amount of $zeta$ phase and large amount of d phase Daha fazlası Daha az

Effect of different neoadjuvant chemotherapy regimens on locally advance breast cancer

Coskun, U | Gunel, N | Onuk, E | Yilmaz, E | Bayram, O | Yamac, D | Cihan, A

Article | 2003 | NEOPLASMA50 ( 3 ) , pp.210 - 216

In this retrospective study, we evaluated the results of 91 locally advanced breast cancer (LABC) patients (30 patients in stage IIIA-33.0%, 61 patients in stage IIIB-67.0%) who had been treated with different neoadjuvant chemotherapy regimens. Forty-three (47.3%) patients treated with FAC (5-Fluorouracil, doxorubicin, cyclophosphamide) or CA (cyclophosphamide, doxorubicin), 33 (36.3%) with FEC (5-Fluorouracil, epirubicin, cyclophosphamide) or CE (cyclophosphamide, epirubicin) and 15 (16.5%) with CMF (cyclophosphamide, methotrexate, 5-Fluorouracil) combination as neoadjuvant setting. Median follow-up duration was 33 (6-116) months i . . .n 91 patients. There was no significant difference in the pretreatment characteristics of patients receiving FAC/CA, FEC/CE and CMF including age, disease stage, menopausal and estrogen/progesteron receptor (ER/PR) status (p > 0.05). In CMF group, no patient was treated with taxan as adjuvant setting. However, ten patients (30.3%) in FEC/CE group and 21 patients (48.8%) in FAC/CA group were treated with taxans. Overall response rate was lower in CMF group (60.0%), when compared to FEC/CE (81.9%) and FAC/CA (91.0%) groups (p < 0.05). Median overall survival (OS) and diseases free survival (DFS) were similar in three groups; 28.0 months (range: 14.8-41.1) and 12.0 months (range: 5.3-18.6) in CMF, 45.0 months (range: 16.8-73.1) and 23.0 months (range: 0.0-48.6) in FEC/CE, 46.0 months (range: 41.1-50.8) and 22.0 months (range: 11.1-32.8) months in FAC/CA groups, respectively (p > 0.05). In conclusion, overall response rates were found to be higher in anthracycline-based combinations than CMF, but these regimens had no additional survival advantage over CMF regimen. Long-term effects of these regimens should be investigated in further randomized trials Daha fazlası Daha az

Effect of different neoadjuvant chemotherapy regimens on locally advanced breast cancer

Coskun U. | Gunel N. | Onuk E. | Yilmaz E. | Bayram O. | Yamac D. | Cihan A.

Article | 2003 | Neoplasma50 ( 3 ) , pp.210 - 216

In this retrospective study, we evaluated the results of 91 locally advanced breast cancer (LABC) patients (30 patients in stage IIIA - 33.0%, 61 patients in stage IIIB - 67.0%) who had been treated with different neoadjuvant chemotherapy regimens. Forty-three (47.3%) patients treated with FAC (5-Fluorouracil, doxorubicin, cyclophosphamide) or CA (cyclophosphamide, doxorubicin), 33 (36.3%) with FEC (5-Fluorouracil, epirubicin, cyclophosphamide) or CE (cyclophosphamide, epirubicin) and 15 (16.5%) with CMF (cyclophosphamide, methotrexate, 5-Fluorouracil) combination as neoadjuvant setting. Median follow-up duration was 33 (6-116) mont . . .hs in 91 patients. There was no significant difference in the pretreatment characteristics of patients receiving FAC/CA, FEC/CE and CMF including age, disease stage, menopausal and estrogen/progesteron receptor (ER/PR) status (p>0.05). In CMF group, no patient was treated with taxan as adjuvant setting. However, ten patients (30.3%) in FEC/CE group and 21 patients (48.8%) in FAC/CA group were treated with taxans. Overall response rate was lower in CMF group (60.0%), when compared to FEC/CE (81.9%) and FAC/CA (91.0%) groups (p0.05). In conclusion, overall response rates were found to be higher in anthracycline-based combinations than CMF, but these regimens had no additional survival advantage over CMF regimen. Long-term effects of these regimens should be investigated in further randomized trials Daha fazlası Daha az

Beekeeping experience and developments in Turkey and in Northern Cyprus

Kandemir I.

Review | 2003 | American Bee Journal143 ( 6 ) , pp.464 - 467

The recent status of beekeeping in Turkey and Northern Cyprus are described. Races of honey bees, activities of honey bees, honey production, traditional beekeeping using traditional hives, modern beekeeping using modern hives, in these countries, are included in this work. History of beekeeping and research activities are also discussed. Comparisons in terms of number of colonies and honey yield with other countries are tabulated.

İnsan plasental glutatyon S-transferazının izolasyonu, kinetik özellikleri ve bazı ilaçlarla in vitro etkileşimi

Çelik, V. Kenan | Armutcu, Ferah | Aker, Ahmet

Article | 2003 | Cumhuriyet Üniv. Tıp Fak. Derg.25 ( 4 ) , pp.187 - 192

Plasental glutatyon-S-transferaz (GST-n) enzimi myiadında doğum yapmış olgunun plasentasından glutatyon agaroz affinite kolonu kullanılarak izole edildi. GST-n 2628 umol/mg dk spesifik aktivite ve % 0,5 verimle saflaştırıldı. Enzimin substratı olan glutatyon ( GSH ) için Km değeri 2 mM, Vmax değeri 11.1 U/mg dk; kloro-2,4-dinitrobenzen ( CDNB ) için Km değeri 0,55mM, Vmax değeri 35.0 U/mg dk olarak bulundu. İlaç etkileşimi çalışmalarında, prematüre doğumların önlenmesinde kullanılan Pre-Par® (Ritodrin HCL) ve antibakteriyel etkili Ampisid® (Ampisilin), enzim aktivitesini in vitro olarak % 50-55 oranında inhibe ettiği gözlendi. Antie . . .metik olarak kullanılan Metpamid® (Metoclopramid) enzim aktivitesini %80-85 oranında inhibe ederken, klinik kullanımı oldukça yaygın olan, ağrı kesici ve ateş düşürücü etkili Novaljin® (Metamizol), enzim aktivitesini % 70-80 oranında inhibe etti.Yine anti-bakteriyel etkileri olan lesef® (Ceftriaxon) ve Sultasid® (Sultamisilin)'in .ise enzim aktivitesini %10-15 oranında inhibe ettiği gözlendi. Bu bulgular bu tür ilaçların hamilelerde çok titiz ve dikkatli bir seçimle kullanılması gereğini ortaya koymaktadır. Placental GST-n was isolated from full-term placenta by glutathione affinity column. GST was obtained with 0,5 % yield and had a specific activity of 2628 units per milligram protein. Km and Vmax values for glutathione (GSH) and chloro-2,4-dinitrobenzen (CDNB) as substrates were 2mM, 11,1 U/mg min and 0,55 mM, 35,0 U/mg min respectively. it was observed that GST activity was decreased 50-55% by Pre-Par® (Ritodrine HCL) used to prevent the premature birth. Metpamid® (Metoclopramid), an antiemetic, inhibited the enzyme activity 80-85%. Novalgine® (Metamizole), known as an analgesic and antipyretic, is also inhibited enzyme activity 70-80%.In addition to these drugs Sultacide® (Sultamisilin) and lesef® (Ceftriaxon) which have an antibacterial effect inhibited the enzyme activity 10-20%. These results suggested that these drugs must be used carefully in pregnant women Daha fazlası Daha az

6698 sayılı Kişisel Verilerin Korunması Kanunu kapsamında yükümlülüklerimiz ve çerez politikamız hakkında bilgi sahibi olmak için alttaki bağlantıyı kullanabilirsiniz.

creativecommons
Bu site altında yer alan tüm kaynaklar Creative Commons Alıntı-GayriTicari-Türetilemez 4.0 Uluslararası Lisansı ile lisanslanmıştır.
Platforms