Yazar "Koyuncu, T." seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • Küçük Resim Yok
    Öğe
    AN ANN APPROACHES ON ESTIMATING EARTHQUAKE PERFORMANCES OF EXISTING RC BUILDINGS
    (ACAD SCIENCES CZECH REPUBLIC, INST COMPUTER SCIENCE, 2012) Arslan, M. H.; Ceylan, M.; Koyuncu, T.
    This study aims at developing an artificial intelligence-based (ANN based) analytical method to analyze earthquake performances of the reinforced concrete (RC) buildings. In the scope of the present study, 66 real RC buildings with four to ten storeys were subject to performance analysis according to 19 parameters considered effective on the performance of R,C buildings. In addition, the level of performance of these buildings in case of an earthquake was determined on the basis of the 4-grade performance levels specified in Turkish Earthquake Code-2007 (TEC-2007). Thus, an output performance data group was created for the analyzed buildings, in accordance with the input data. Thanks to the ANN-based fast evaluation algorithm mentioned above and developed within the scope of the proposed project study, it will be possible to make an economic and rapid evaluation of four to ten-storey RC buildings in Turkey with great accuracy (about 80%). Detection of post-earthquake performances of RC buildings in the scope of the present study will facilitate reaching important results in terms of buildings, which will be beneficial for Civil Engineers of Turkey and similar countries.
  • Küçük Resim Yok
    Öğe
    Bilateral uterine and ovarian artery ligation in addition to B-Lynch suture may be an alternative to hysterectomy for uterine atonic hemorrhage
    (7847050 CANADA INC, 2012) Gezginc, K.; Yazici, F.; Koyuncu, T.; Mahmoud, A. S.
    Purpose of investigation: To evaluate the effectiveness of bilateral uterine arteries and ovarian artery ligation followed by B-Lynch compression suturing in controlling atonic postpartum hemorrhage. Methods: In this retrospective study, the data of eight patients that had uterine atony during cesarean section and treated by bilateral uterine and ovarian artery ligation followed by B-Lynch compression suturing during the period from February 2009 to September 2010 were collected and analyzed. Results: Eight cases were treated by the above protocol; the average age of the patients was 25.25 +/- 5.09 years, and the mean gestational age was 35.75 +/- 3.80 weeks. Seven of the patients were primiparous. They were hospitalized on average 5.25 +/- 2.31 days. The mean operation time was 61.25 +/- 24.60 minutes and mean estimated blood loss was 2787.5 +/- 1573.38 ml. Internal iliac artery ligation was necessary in one patient only. Hysterectomy was not performed in any of the patients. Five patients had intraoperative or postoperative blood transfusion. Conclusion: The addition of uterine artery and ovarian artery ligation to the B-Lynch suture may be considered as a major hemostatic step before proceeding to hysterectomy in cases of uterine atony bleeding, and all gynecologic surgeons should be familiar with it.