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170383

Discontinuity set extraction from 3D point clouds obtained by UAV Photogrammetry in a rockfall site

Yiğit, Abdurahman Yasin | Ulvi, Ali | Alptekin, Aydın | Yakar, Murat

Rockfall event is common on rocky terrain, and it threatens people. Recent advances in remote sensing technologies allow us to model the terrain with high accuracy and resolution. In this study, we show the application of modeling a rockfall site in three-dimensional (3D) using an unmanned aerial vehicle. The acquisition of information about discontinuities in the rock masses using 3D point clouds is vital to characterize rockfall dynamics. We obtained 3D spatial information and point clouds of a rocky slope from acquired images. We extracted 10 discontinuity sets from the 3D model as they have significant effects on the failure mechanism. Details in mapping discontinuities have improved significantly with the help of point clouds. The results are beneficial for modeling the terrain of ina...

170423

VIII. Sebze Tarımı Sempozyumu (23-26 Haziran 2010 Van) Bildiri Kitabı

CEMALOĞLU, Nazmi

Serada organik domates yetiştiriciliğinde bitki besleme.

170521

Tarsus’tan Yeni Bir Hamam: Tarsus’un Roma İmparatorluk Dönemi Kentsel Dokusuna ve Kydnos’un Rotasına İlişkin Yeni Görüşler

Kaplan, Deniz

Tarsus Belediyesi’nin Caminur Mahallesinde 2017 yılı içerisinde gerçekleştirdiği kazılarda, Roma İmparatorluk Dönemi’ne ait bazı mimari izler açığa çıkmıştır. Burada sadece kesitte görülen dört duvar kalıntısı, bir Roma İmparatorluk Dönemi Hamamı’na ait olabilir. Bu yapısal izlerin bir hamama ait olması durumunda, Tarsus’un Roma İmparatorluk Dönemi kentsel dokusu ve Kydnos Irmağı’nın yatağının konumu konusunda yeni görüşler sunmak mümkündür. Hamam’ın kent içerişindeki konumu, Kleopatra Kapısı’nın Roma Tarsus’unun batı sınırlarını oluşturmadığını kanıtlamaktadır. Bu durum Köylü Garajı’nın bir nekropol olamayacağını düşündürtmektedir. Kydnos Nehri’nin güney güzergâhının Gözlükule yakınlarında dirsek yaparak güneydoğu yönünde uzandığı önerilmektedir. Ancak Tarsus’daki diğer Hamam yap...

166680

Pazarlamada fiyat ile ilgili çalışmalar üzerine bir değerlendirme

Atılgan, Kalender Özcan

Pazarlamanın dört temel elemanı arasından tek gelir getiren unsur olanfiyat ve fiyatlandırma ile ilgili k onular, alan yazında uzun süre göz ardıedilmiştir. Geçmişte yapılan araştırmalar da, fiyat konusunun akademikalanda çok az ilgi gördüğü (Hinterhuber, 2004; Malhotra, 1996), hattapazarlama karması ile ilgili verilen dersler arasında fiyat konusuna çok azdeğinildiği bilinmektedir (Kellerman, Gordon ve Hekmat, 1995).

166989

The effect of home-bleaching application on the color and translucency of five resin composites

Cengiz Yanardag, Esra

Objectives: The aim of this study was to investigate the effect of home bleaching agents on the color and translucency of resin composites. Methods: Thirty disc shaped specimens (1mm thick) were fabricated from each resin composite (Reflexions, Grandio, Gradia Direct, Clearfil Majesty Esthetic, Ceram-X Mono) and divided into 3 subgroups as carbamide peroxide (CP, Opalescence 10% PF), hydrogen peroxide (HP, 10% Opalescence Treswhite Supreme) and control group (n=10). Baseline CIE L*a*b* color coordinates were measured with spectrophotometer and translucency parameters (TP) were calculated. CP and HP groups were treated with bleaching agents according to manufacturers' instructions and control group was stored in distilled water (DW) for 14 days. Color and translucency measurements were...

169592

Chlorpromazine-tadalafil interaction leading to refractory ischemic priapism and penile prosthesis implantation: a case report

ARİCİ,CAN | BAŞARANOĞLU,MERT | ÇAYAN,SELAHİTTİN | BOZLU,MURAT | AKBAY,ERDEM

Abstract , Murat Bozlu1 and Erdem Akbay1 Background Priapism represents a rare urological emergency characterized by persistent penile erection unrelated to sexual stimulation. Although chlorpromazine-induced priapism has been documented, the synergistic interaction with phosphodiesterase type 5 inhibitors resulting in refractory cases necessitating penile prosthesis implantation constitutes a novel clinical scenario requiring comprehensive documentation. Case presentation We report a 56-year-old male who developed refractory ischemic priapism following self-administration of oral chlorpromazine for hiccups, taken 24 h after tadalafil 20 mg for erectile dysfunction. The patient had previously experienced a transient priapism episode 10 years earlier following isolated chlorpromazine use, e...

169658

Can Plant Extracts Be Used as an Alternative for Short- and/or Long-Term Storage of Semen in Some Animal Species?

Tuncer,, Pürhan Barbaros

Ex situ koruma, genetik kaynakların ve nesli tükenmekte olan kanatlıların korunmasında önemli bir yöntemdir. Gamet koruması için kanatlılarda tek yöntem spermanın dondurulmasıdır. Çünkü kanatlı yumurtaları oldukça hacimlidir ve bunların dondurularak saklanması için kullanılan kriyoprotektanların çözüm sonu uzaklaştırılması pek mümkün değildir. Son yirmi yılda, standart kanatlı spermasının don durma teknolojisini geliştirmek için birçok çalışma yapılmıştır. Farklı ırklara uyum sağlamak için birçok girişim ve yöntem araştırılmıştır. Bu bölümde, ilk olarak spermatozoanın yapısı ve kanatlı spermasının dondurulmasını etkileyen ana faktörlerden bahsedilmiştir. Nanopartiküller ve sperma sulandırıcılarına katılan nanopartiküllerin sperma dondurulabilirliği üzerine etkileri hakkında bilgi verilmiş...

169702

Nucleated red blood cells as predictor of all-cause mortality in emergency department

Hüseyin Narcı | Cüneyt Ayrık | Mehmet Burak Yavuz Çimen

Bacground: Nucleated red blood cells (NRBCs) are immature erythrocytes that are not normally detected in the blood of healthy adults. The detection of these cells in peripheral blood is associated with increased mortality and poor prognosis. In this study, we aimed to investigate whether NRBCs predict for all causes of death in patients admitted to the emergency department (ED). Method: This study was conducted retrospectively between January 2019 and December 2019 in academic emergency department, faculty of medicine. We included all patients who died of non-traumatic causes and The control group consisted of patients discharged from the ED. NRBCs and other laboratory parameters were compared between the two groups. The primary outcome is all-cause mortality in the ED. Multivariate log...

169767

Performance investigation and emission analysis of a diesel engine operated on hydrogen and ammonia

Okumuş, Fatih

This study investigates binary-fuel operation of a single-cylinder diesel engine using hydrogen and ammonia as secondary fuels through comprehensive CFD simulations. The effects of injector hole diameter, injection timing, and injection duration on combustion, performance, and emissions were systematically analyzed under both full- and partial-load conditions. Parametric analyses further revealed that variations in nozzle diameter and injection duration exerted a stronger influence on indicated power and efficiency than intake air conditions. The results indicate that injector geometry strongly influences combustion dynamics. At full load, indicated power averaged 6.0 kW, with the highest value of 6.5 kW obtained in ammonia–diesel operation at the smallest nozzle diameter. At partial load,...

169772

Nanostructured Photocatalysts Chapter 15 - Black phosphorus-based photocatalysts for energy and environmental applications

Altan, Orhan

Photocatalysis using semiconductor materials to conduct chemical reactions more efficiently with the aid of sunlight irradiation is foreseen as a promising solution to combat the energy and environmental pollution crisis that the world is facing at present. Finding a suitable semiconductor material that harvests a large portion of the sunlight spectrum with high photocatalytic efficiency lies in the heart of photocatalysis. In this regard, black phosphorus (BP), a rising star two-dimensional (2D) semiconducting material, has recently been regarded as an abundant, nontoxic, metal-free, and cheap photocatalyst with a suitable bandgap and broad light absorption ability. In this chapter, after the introduction of the general properties and synthesis of BP, the photocatalytic efficiency of BP a...

169773

Determining risk factors of bleeding in patients on warfarin treatment

Evren Uygungül | Cuneyt Ayrik | Huseyin Narci | Semra Erdoğan | Ibrahim Toker | Filiz Demir | Ulas Karaaslan

Background. Warfarin is a commonly used oral anticoagulant agent. The most common adverse effects of warfarin are bleeding complications. Methods. We performed a 1-year retrospective chart review of emergency department patients using warfarin. A total of 65 patients with bleeding disorder (study group) and 63 patients without bleeding (control group) were included, making up a total of 128 subjects. Demographic data, frequency of international normalized ratio (INR) checks, and routine blood results were extracted. Logistic regression analysis was used to determine which factors were most closely associated with bleeding complications. Results. Median age was 62.0 ± 14.4 and 61.9 ± 14.5 for study group and control group, respectively. Educational status and frequency of INR checks were si...

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