Physical and Mechanical Properties of an Artificial Aggregate Made up of Ground Granulated Blast-Furnace Slag

Manufacturing artificial aggregate by utilizing waste materials has gained great importance as the aggregate occupies a high volume in concrete (60–70%). In this paper, ground granulated blast furnace slag (GGBFS) is utilized in aggregate manufacturing. Cold bonding and sintering methods were used as production processes. The pellets were put through a series of tests like dry density, specific gravity, water absorption, and crushing strength. The results indicated that the density of pellets increased by increasing the GGBFS dosage while the water absorption capacity was reduced. Furthermore, the highest crushed strength was recorded at 50% addition of GGBFS

The Investigation of Strength and Water Absorption of Self-Compacting Concrete by Inclusion of Metakaolin and Calcined Kaolin

In this study, commercially available high reactivity Czech metakaolin and calcined impure local kaolin were used for production Self Compacting Concrete SCC samples and some hardened properties of these concretes have been investigated. Four types of SCC mixtures were prepared with 0%, 5% and 10% replacement level of Metakaoline and calcined kaolin with including control mixture without any mineral admixtures. Only Portland Cement PC was used for production of the control mixture and this mixture was produced with the purpose of comparison. The highest compressive strength value was obtained as 83.5 MPa with 10% replacement level of Metakaolin. The lowest water penetration depth was also calculated as 3.5 mm with 10% replacement level of Metakaolin. The compressive strength and water penetration tests showed that the best strength and durability performance values obtained from mixtures with 10% replacement level of Metakaolin

1st Workshop on Maritime Computer Vision (MaCVi) 2023: Challenge Results

The 1$^{\text{st}}$ Workshop on Maritime Computer Vision (MaCVi) 2023 focused on maritime computer vision for Unmanned Aerial Vehicles (UAV) and Unmanned Surface Vehicle (USV), and organized several subchallenges in this domain: (i) UAV-based Maritime Object Detection, (ii) UAV-based Maritime Object Tracking, (iii) USV-based Maritime Obstacle Segmentation and (iv) USV-based Maritime Obstacle Detection. The subchallenges were based on the SeaDronesSee and MODS benchmarks. This report summarizes the main findings of the individual subchallenges and introduces a new benchmark, called SeaDronesSee Object Detection v2, which extends the previous benchmark by including more classes and footage. We provide statistical and qualitative analyses, and assess trends in the best-performing methodologies of over 130 submissions. The methods are summarized in the appendix. The datasets, evaluation code and the leaderboard are publicly available at https://seadronessee.cs.uni-tuebingen.de/macvi.Comment: MaCVi 2023 was part of WACV 2023. This report (38 pages) discusses the competition as part of MaCV

DETERMINATION OF CORRELATION BETWEEN SPECIFIC ENERGY CONSUMPTION AND VIBRATION OF A RAW MILL IN CEMENT INDUSTRY

Çimento endüstrisinde 1 ton çimento üretimi için yaklaşık 110 kWh elektrik enerjisi tüketilmektedir ve toplam elektrik enerjisinin yaklaşık %26’sı farin üretimi sırasında harcanmaktadır. Bu çalışmamızda bir çimento fabrikasında çalıştırılmakta olan farin değirmeninden belirli ölçümler alınmış ve ünitenin özgül enerji tüketim değeri 25,52 kWh/ton farin olarak hesaplanmıştır. Bilye doluluk oranı, malzeme nem miktarı ve üniteye beslenen hammadde ebatlarının ana tahrik motorları üzerindeki titreşim değerlerine olan etkisi incelenmiştir. 12 ay boyunca düzenli olarak toplanan veriler, değirmen titreşim değerlerinin ünitenin özgül enerji tüketim (ÖET) değerlerini doğrudan etkilediğini ortaya çıkarmıştır. Hammaddenin içerdiği nem oranının yarıya düşürülmesiyle ana tahrik motorları üzerindeki titreşim değerlerinin yaklaşık %12 oranında azaldığı tespit edilmiştir. Bu sayede, ünitenin özgül enerji tüketimi 25,19 kWh/ton farin değerlerine düşürülmüştür. Düzenli bakımla ana tahrik motorlarındaki titreşim değerlerinin 4 mm/s değerinin altında tutulmasıyla, değirmenin özgül enerji tüketim değeri %2,16 düşerek, 1 ton farin için yaklaşık 0,55 kWh’lik bir enerji tasarrufunu sağlanmış ve değirmenin enerji tüketimi 24,97 kWh/ton farin değerine düşürülmüştü

ENERGY, EXERGY AND EXERGOECONOMIC ASSESSMENT OF A DRY TYPE ROTARY KILN

This study deals with, energy, exergy, specific energy consumption (SEC) and exergoeconomic assessment of a burner (dry-type) in a currently running cement facility in Şanlıurfa, Turkey. The exergoeconomic analysis of the unit is evaluated. The first and second law analysis including exergy destructions and exergetic cost allotments are analyzed for the unit. The first and second law efficiencies and SEC of the kiln are calculated to be 54%, 29% and 3793 kJ/kg clinker respectively. The specific cost method (SPECO) has been used for the exergoeconomic analysis. The exergetic cost and cost rate and of the clinker product of the rotary kiln are found to be 77.3 $/GJ and 2608$/h, respectively

Mechanical Properties of Concrete Produced by Light Cement-Based Aggregates

There is great growing concern regarding the environmental impact of the building and construction industry. Aggregate, one of the most crucial ingredients of concrete, is among the concerns in this regard. There will be a steady increase in demand for aggregates in the near future, but limited natural reserves will not be able to respond to this demand due to the risk of depletion. This current situation is forcing researchers to conduct new and artificial material production techniques that keep the resources within the allowed boundaries. Artificial aggregate production is one of the new methods for sustainable, environmentally friendly material production. The mechanical and environmental properties of lightweight concrete produced via artificial aggregates in different ratios were investigated in this study. Fly ash (FA), ground granulated blast-furnace slag (GGBFS), and quartz powder (QP) were utilized in the production of artificial lightweight aggregate (LWA) by using a special technique known as cold-bonding pelletization. The prepared concrete samples with the artificial aggregates were subjected to compressive, tensile, flexural, and bonding tests. The test results demonstrated that the bonding, tensile, and compressive strength values of lightweight concrete with a 20% GGBFS coarse aggregate replacement ratio of lightweight aggregates increased by 11%, 12%, and 30%, respectively. Moreover, it has been observed that a 41% increase in compressive strength is possible with a 40% QP coarse aggregate replacement ratio of lightweight aggregates. Finally, in addition to significantly impacting the mechanical properties of the lightweight concrete produced via artificial lightweight aggregates, we demonstrated that it is possible to control and reduce the harmful environmental effects of waste materials, such as FA, GGBFS, and QP in the present study

S-24: Hamstring Tendon Otogrefti ile Ön Çapraz Bağ Rekonstrüksiyonu Sonrasında Modifiye ve Hızlandırılmış Fizyoterapi ve Rehabilitasyon Programının Propriosepsiyon Denge ve Koordinasyon Üzerine Etkileri

Bu çalışmanın amacı; izole ön çapraz bağ (ÖÇB) veya ön çapraz bağ ile birlikte menisküs yaralanması geçiren kişilerin, hamstring tendon otogrefti ile ön çapraz bağ rekonstrüksiyonu sonrasında modifiye ve hızlandırılmış fizyoterapi ve rehabilitasyon programının propriosepsiyon, dinamik denge üzerine etkilerini araştırmaktır. Çalışma artroskopik Hamstring Tendon Otogrefti ile Ön Çapraz Bağ Rekonstrüksiyonu Cerrahisi Geçiren 20 kişi (n=20 K/E: 2/18) ile gerçekleştirilmiştir. Tüm olguların operasyon öncesinde (preop) diz propriosepsiyon değerleri gözler açık ve kapalı olarak 15, 30, 45 ve 60 derecede Dijital Gonyometre ile ölçüldü. Operasyon sonrası (postop) tüm olgular modifiye, hızlandırılmış fizyoterapi ve rehabilitasyon programına alındı. Operasyon sonrası 3., 6., 12. hafta ve 6. Ay’da propriosepsiyon ölçümleri tekrar edildi.Dinamik denge ölçümleri 3., 6., 12. hafta ve 6. Ay’da horizontal, sağ oblik, sol oblik ve tek ayak denge ölçümleri olarak yapıldı. Fonksiyonel seviyelerini değerlendirmek için Lysholm skoru ve ağrıyı değerlendirmek için VAS (Visual Ağrı Skoru), olguların fonksiyonel performansları durumlarını değerlendirmek için tek ayak atlama, çift ayak atlama ve çapraz atlama testleri uygulandı. Çalışmamızda olguların gözler açık ve kapalı durumda propriosepsiyon (15°, 30°, 45° ve 60°) ölçüm sonuçları postoperatif dönemde preoperatif döneme göre 12. Hafta ve 6. Ayda istatistiksel olarak anlamlı düzeyde düzelme göstermiştir (p<0.05). Olgularda 3. haftadan sonra dinamik denge testlerinde önemli gelişme saptanmışır, bu artış istatistiksel olarak da anlamlıdır (p<0.05). 6 Ayda yapılan fonksiyonel performans testlerini etkileyen bağımsız değişkenler çoklu regresyon analizinde araştırılmış, 60° ölçülen propriosepsiyon sonuçları ve sol tarafın tek adım atlama test skoru, sağ tarafta tek adım atlama test sonucunu etkileyen bağımsız faktörler olarak bulunmuştur ( p<0.05 ). Çalışmamızda yaralandıktan sonra 5 ay içinde ameliyat olan olguların Lysholm skorları 5 ay ve daha ileri zamanlarda ameliyat olanlara oranla daha yüksek bulunmuştur. Sonuç olarak; olguların ölçülen propriosepsiyon değerleri ile Post operatif 6. aydaki fonksiyonel performans sonuçları ilişkili gözükmektedir

Natural History Of Congenital Generalized Lipodystrophy: A Nationwide Study From Turkey

Context: Congenital generalized lipodystrophy (CGL) is a rare autosomal recessive disorder characterized by near-total lack of body fat. Objective: We aimed to study natural history and disease burden of various subtypes of CGL. Design: We attempted to ascertain nearly all patients with CGL in Turkey. Setting: This was a nationwide study. Patients or Other Participants: Participants included 33 patients (22 families) with CGL and 30 healthy controls. Main Outcome Measure(s): We wanted to ascertain genotypes by sequencing of the known genes. Whole-body magnetic resonance imaging was used to investigate the extent of fat loss. Metabolic abnormalities and end-organ complications were measured on prospective follow-up. Results: Analysis of the AGPAT2 gene revealed four previously reported and four novel mutations (CGL1; c.144C>A, c.667_705delinsCTGCG, c.268delC, and c.316 + 1G > T). Analysis of the BSCL2 gene revealed four different homozygous and one compound heterozygous possible disease-causing mutations (CGL2), including four novel mutations (c.280C > T, c. 631delG, c. 62A > T, and c. 465-468delGACT). Two homozygous PTRF mutations (c.481-482insGTGA and c. 259C > T) were identified (CGL4). Patients with CGL1 had preservation of adipose tissue in the palms, soles, scalp, and orbital region, and had relatively lower serum adiponectin levels as compared to CGL2 patients. CGL4 patients had myopathy and other distinct clinical features. All patients developed various metabolic abnormalities associated with insulin resistance. Hepatic involvement was more severe in CGL2. End-organ complications were observed at young ages. Two patients died at age 62 years from cardiovascular events. Conclusions: CGL patients from Turkey had both previously reported and novel mutations of the AGPAT2, BSCL2, and PTRF genes. Our study highlights the early onset of severe metabolic abnormalities and increased risk of end-organ complications in patients with CGL.WoSScopu