Yazar "Çelik, Salih" seçeneğine göre listele

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    Comparison of five percutaneous pinning methods for unstable extra-articular distal radius fractures: A mechanical study using sawbones
    (Turkish Joint Diseases Foundation, 2021) Muratlı, Sedit Kıvanç; Uzun, Bora; Çelik, Salih
    Objectives: This study aims to mechanically compare five different extra-focal bi-cortical pin configurations (using two and three pins) employed for fixation of a simulated unstable extra-articular distal radius fracture with dorsal comminution using a sawbone model. Materials and methods: This in vitro mechanical study was conducted between June 2019 and July 2019. A standard fracture model (Arbeitsgemeinschaft für Osteosynthesefragen [AO] type 23-A3.3) was created using a fourth generation composite artificial radius bone. Five groups with two- and three-pin configurations were tested under axial, volar, and dorsal loading with a universal test device. Mean stiffness values were compared statistically. Results: Comparison of stiffness values from axial and volar loading tests between groups in paired comparison showed no statistically significant difference (p=0.194 and p=0.086, respectively). Dorsal loading tests showed statistically significant difference between the groups in pairwise comparison (p=0.002). Three-pin groups (Groups 3, 4, and 5) had higher stiffness values compared to two-pin groups (Groups 1 and 2) in dorsal loading tests (p=0.001). Three-pin configuration test groups with two divergent or convergent pins from the radial styloid performed better compared to both two-pin groups (p=0.01, p=0.002) in dorsal loading tests. Conclusion: Our data demonstrated that the three-pin configuration with two divergent or convergent Kirschner wires from the styloid and a third wire from the dorsal/ulnar cortex had higher stiffness values compared to two-pin configurations in dorsal loading tests. When indicated, we suggest the use of a three-pin construct. Particularly in cases with a risk of volar angulation, we recommend a three-pin configuration with two divergent or convergent bi-cortical Kirschner wires.
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    Öğe
    Italia üzüm çeşidinde iki farklı terbiye şeklinde sürgün gelişimi ile üzüm kalitesi arasındaki ilişkiler
    (2005) Delice, Ahmet; Çelik, Salih
    Bu çalışma, 1998-2000 yılları arasında Rasyonel Pergola ve Çift Kollu Kordon terbiye şekillerinde tesis edilmiş Italia üzüm çeşidinde yürütülmüştür. Deneme bağı 1992 yılında Kober 5 BB anacı üzerine kurulmuştur. Araştırmada asmalar üzerinde farklı pozisyonlarda olacak şekilde dört ayrı sürgün grubu belirlenmiştir. Bu sürgün gruplarının vegetatif gelişme özellikleri (boğum sayısı, günlük boğum sayısı artışı, sürgünlerin odunlaşma oranı, budama ağırlığı, sürgün çapı, koltuk sürgünü sayısı, yaprak alanı) ve taşıdıkları üzümün kalitesi (100 tane ağırlığı, toplam eriyebilir kuru madde oranı, toplam asillik) arasındaki ilişkiler incelenmiştir. Elde edilen sonuçlar asma üzerinde bulunan sürgünlerin farklı gelişme özellikleri gösterdiklerini ve üzümün kalitesinin sürgünün vegetatif gelişme gücüne ve asma üzerindeki pozisyonuna bağlı olarak etkilendiğini ortaya koymuştur. Taç içerisinde sıkışık pozisyonda bulunan ve verim dalının dip gözünden gelişen sürgünler diğer sürgünlerin baskısı altında daha zayıf bir gelişme göstermiştir. Sürgünlerin yatay pozisyonda geliştiği Rasyonel Pergola terbiye şeklinde sürgün grupları arası vegetatif gelişme farklılığı azalmıştır.
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    Öğe
    The effects of heat application on the quality of golden delicious and starking delicious apple varieties
    (2006) Ekinci, Neslihan; Çelik, Salih
    The objective of this study is to determine the effects of heat applications on fruit quality during the storage. Golden Delicious and Starking Delicious apple varieties used in this research were obtained from the Vineyard Research Institute located in Tekirdag. Research was carried out with three replications in randomized block design with split plots. Apples were treated with heat for 4 days at 38°C and then stored in Institute's cold air chambers under the conditions of 0°C with 85-90% relative humidity. During the heat application high weight loss occurred in fruits. This application was found to be effective on the firmness of the fruits during storage. The mean application was responsible of ripening by increasing the respiration rate and the starch degradation rate in fruits. © 2006 Asian Network for Scientific Information.