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Evaluating the effect of external DEMs on the accuracy of InSAR DEM generation
No full textIn recent years, the production of digital elevation models (DEMs) by using the interferometric synthetic aperture radar (InSAR) technique has become more useful compared to traditional methods. When DEM production is carried out by using this technique, an external DEM is used in the image processing steps. In this study, new DEMs were produced from an interferometric pair of TerraSAR-X images by using SRTM, ALOSW3D, TANDEM-X and STEREO DEMs with spatial resolutions of 90 m, 30 m, 12 m and 5 m, respectively. In addition, in situ measurements were carried out to collect control points and the accuracy of the obtained products was analyzed. The accuracy of the products obtained by using root mean square error, standard deviation and correlation coefficients were compared. The results obtained in this study demonstrated the effect of external DEMs in the DEM production stage with InSAR pairs and how accuracy increases with better external DEMs. In addition, the effect of the external DEM quality used was shown in the results. It was determined that provided the STEREO DEM reached the highest accuracy with the root mean square error value of 1.52 m. Also, analyzes were made according to different zones. According to the results, it was observed that the statistical errors increased in areas where the slope was steeper. While the RMSE of the rolling zone is 1.17 m, rugged zone is 2.33 m. The analysis results of the other DEMs from high to low quality were TANDEM-X, ALOSW3D and SRTM, respectively. It is thought that the results of this study can help to produce data with the required sensitivity in DEM production
Pentactions and action representability in the category of reduced groups with action
Full text linkA notion of pentaction of any object in the category rGr .{\mathbf{rGr}^{\bullet}} of reduced groups with action is introduced. The operations are defined in the set »e - - ac - (A) {\mathsf{Pentact}(A)} of pentactions of an object A of rGr.{\mathbf{rGr}^{\bullet}}. It is proved that if an object A is perfect with zero weak stabilizer in the sense defined in this paper, then »e-ac-(A) {\mathsf{Pentact}(A)} is an object of rGr. {\mathbf{rGr}^{\bullet}}, it has a derived action on A, the object A is action representable and »e - - ac -(A) {\mathsf{Pentact}(A)} represents all actions on A
Breast cancer risk coordinators: Artificial intelligence–based density measurement and Mullerian-inhibiting substance
No full textDue to its increasing prevalence, breast cancer has become a serious public health problem. In addition to the models used to identify individuals at risk, the search for fast and accurate tools has continued for years. Aims: In our study, we aimed to examine the correlation of mammographic density measurement and serum Mullerian-inhibiting substance (MIS) levels with an effective model such as Gail. Methods: Of the women whose serum MIS levels were measured in the last 1 year, 214 participants who applied for routine breast examination were included in the study. The age range was between 40 and 60. Exclusion criteria were determined as pathological mammographic findings, active breast symptom, and thoracic radiotherapy history. Mammographic density measurement (PD) was performed with the artificial intelligence–based Deep-LIBRA software. The relationship of these two parameters with the lifetime risk of developing breast cancer was examined. Results: The correlation between PD and GRP was remarkable (p < 0.01 cc:0.35). A positive correlation was observed between serum MIS levels and increased breast cancer, but it was not possible to prove this statistically (p = 0.056). It was thought that this situation was caused by perimenopausal patients. Because when the menopause group was excluded, the correlation between MIS levels and GRP decreased (p = 0.12 cc:0.17). Conclusions: PD measurement can be considered as a promising method for the determination of individuals at risk for breast cancer in a large group of patients, but we think that serum MIS levels are not suitable for risk assessment in perimenopausal patients
Selection of the most suitable biogas facility location with the geographical information system and multi-criteria decision-making methods: a case study of Konya Closed Basin, Turkey
No full textIn this study, a suitable area was determined for the biogas plant to be established in Konya Closed Basin (KCB), Turkey’s largest closed basin and has a significant renewable energy field potential, by using Multi-Criteria Decision Making (MCDM) methods and Geographic Information Systems (GIS). Within the scope of the study, a methodology consisting of three stages was followed, and first of all, the settlements in the KCB were listed according to the raw material criteria with the Criteria Importance Through Intercriteria Correlation (CRITIC) and Multi-attributive Border Approximation Area Comparison (MABAC) methods. In the next step, nine criteria, which are frequently preferred in the literature, were used to select the most suitable places where the biogas plant could be built within the priority districts. These criteria are weighted using the Full Consistency Method (FUCOM), based on expert opinions and requiring fewer binary comparison matrices than other MCDM methods. By combining the calculated weights with the spatial data, suitability maps for biogas plant construction were created. With this aspect, the study is the first site selection study in which these methods, which are used separately in the literature, are used together. According to the final map, the most suitable location for Biogas Facility overlap a newly established industrial zone in Karaman Center. The fact that the area determined for the facility is suitable for construction and the possibility that the customer of the energy produced is other industrial establishments here is the most important indicator that the methods applied give good results
Ön Çapraz Bağ Ameliyatı Olan Futbolcularda Genetik Sakatlık Duyarlılığında COL12A1 Gen Polimorfizmi Profillerinin Araştırılması
Full text linkAim: Risk factors such as repetitive traumas, overloads, turning, sliding movements, muscle weakness, excessive training intensity
and duration, and faulty training in football invite anterior cruciate ligament injuries in athletes. In this context, it is thought that determining
the gene profiles of football players to increase their performance and avoid injuries will make a serious contribution to the field in terms
of both performance and athlete health. Although the etiology of the molecular mechanisms is not fully understood, many risk factors are
associated with anterior cruciate ligament tears, including genetic factors, genes involved in the repair process such as MMPs, or
components of the apoptosis pathway. In this study, the relationship between COL12A1 gene polymorphism and anterior cruciate ligament
injury in football players who underwent cruciate ligament surgery was investigated.
Materials and Methods: 41 patients who had Anterior cruciate ligament (ACL) surgery and 65 age-sex-matched healthy
individuals were investigated for COL12A1 A/G polymorphism. Genotyping of COL12A1 A/G was determined using PCR-RFLP.
Statistical analysis of the data was done with Epi Information Software and Arlequin Software. A value of p < 0.05 was considered
statistically significant.
Results: Our study findings showed that there was no significant difference between the patient and control groups in terms of
allele frequency and genotype distribution of the COL12A1 polymorphism (p=0.880).
Conclusion: The findings of this study suggested that COL12A1 (rs970547) was not associated with susceptibility to anterior
cruciate ligament injuries in the Turkish population.Amaç: Futbolda tekrarlayan travmalar, aşırı yüklenmeler, dönme, kayma hareketleri, kas zayıflıkları, aşırı antrenman yoğunluğu ve süresi, hatalı antrenman gibi risk faktörleri sporcularda adeta ön çapraz bağ yaralanmalarına davetiye çıkarır. Bu bağlamda futbolcuların performanslarını artırmak ve sakatlıklardan kaçınmak için gen profillerinin belirlenmesinin hem performans hem de sporcu sağlığı açısından alana ciddi katkı sağlayacağı düşünülmektedir. Moleküler mekanizmaların etiyolojisi tam olarak anlaşılamamış olsa da genetik faktörler, MMP'ler gibi onarım sürecinde yer alan genler veya apoptoz yolunun bileşenleri dahil olmak üzere birçok risk faktörü ön çapraz bağ yırtıkları ile ilişkilidir. Bu çalışmada çapraz bağ cerrahisi geçiren futbolcularda COL12A1 gen polimorfizmlerinin ön çapraz bağ yaralanması ile ilişkisi araştırıldı. Gereç ve Yöntem: Alzheimer Hastalığı (AH) olan 41 hasta ve yaş-cinsiyet olarak eşleştirilmiş 65 sağlıklı birey COL12A1 A/G polimorfizmleri açısından araştırıldı. COL12A1 A/G'nin genotiplemesi, PCR-RFLP kullanılarak belirlendi. Verilerin istatistiksel analizi Epi Bilgi Yazılımı ve Arlequin Yazılım programı ile yapıldı. p ≤ 0,05 değeri istatistiksel olarak anlamlı kabul edildi. Bulgular: Çalışma bulgularımız, hasta ve kontrol grupları arasında COL12A1 polimorfizminin alelik sıklığı ve genotipik dağılımı açısından anlamlı bir fark olmadığını gösterdi (p=0,880). Sonuç: Çalışmamız, COL12A1 gen polimorfizminin Türk popülasyonunda ön çapraz bağ yaralanmalarına yatkınlık ile doğrudan ve anlamlı bir ilişkisi olmadığını göstermektedir
A review on exopolysaccharide production by Lactobacillus acidophilus and their techno-functional applications in food and pharmaceutical industry
No full textBacterial exopolysaccharides (EPS) are renowned for their technical and functional applications in the food and pharmaceutical industry.EPS retrieved from Lactobacillus sp.is one of the bacterial groups that have garnered a great deal of attention by showing its unique behaviors by expressing their ability to promote health benefits. The EPS from Lactobacillus acidophilus finds application in many areas like food, pharmaceuticals, bioremediation, cosmetics, and others. As EPS produced by Lactobacilli has conferred a range of local and systemic health benefits on the host, synthesis of these metabolites through fermentation should be emphasized. An optimal and cost-effective fermentation process by understanding the parameters and conditions is crucial in optimising the EPS yields. This review gives an overview of the biosynthesis of the EPS and the factors influencing the production of the EPS. Finally, techno-functional applications in food and pharmaceutical products associated with EPS are discussed
New histopathological evidence for the relationship between hydromyelia and hydrocephalus following subarachnoid hemorrhage: An experimental study
No full textObjectives: Subarachnoid hemorrhage (SAH) is a serious pathology with a high death and morbidity rate. There can be a relationship between hydromyelia and hydrocephalus following SAH; however, this subject has not been well investigated.
Materials and methods: Twenty-four rabbits (3 ± 0.4 years old; 4.4 ± 0.5 kg) were used in this study. Five of them were used as the control, and five of them as the SHAM group. The remaining animals (n = 14) had been used as the study group. The central canal volume values at the C1-C2 levels, ependymal cells, numbers of central canal surfaces, and Evans index values of the lateral ventricles were assessed and compared.
Results: Choroid plexus edema and increased water vesicles were observed in animals with central canal dilatation. The Evans index of the brain ventricles was 0.33 ± 0.05, the mean volume of the central canal was 1.431 ± 0.043 mm3, and ependymal cells density was 5.420 ± 879/mm2 in the control group animals (n = 5); 0.35 ± 0.17, 1.190 ± 0.114 mm3, and 4.135 ± 612/mm2 in the SHAM group animals (n = 5); and 0.44 ± 0.68, 1.814 ± 0.139 mm3, and 2.512 ± 11/mm2 in the study group (n = 14). The relationship between the Evans index values, the central canal volumes, and degenerated ependymal cell densities was statistically significant (P < 0.05).
Conclusions: This study showed that hydromyelia occurs following SAH-induced experimental hydrocephalus. Desquamation of ependymal cells and increased cerebrospinal fluid secretion may be responsible factors in the development of hydromyelia
A Case of Venous Thrombus, a Rare Complication of Pseudocyst in Acute Pancreatitis, and Associated Acid and Splenomegaly
Full text linkAkut pankreatitin geç dönem (>4 hafta) komplikasyonu olan psödokist ve psödokistin gelişmesine bağlı nadir görülen splenomesenterik venöz tromboz (SMVT), asit, splenomegali gelişebilmektedir. Pankreatitin vasküler komplikasyonları morbidite ve mortalitenin önemli bir nedenidir. Venöz komplikasyonlar arasında SMVT ve buna sekonder gelişen komplikasyonlar yer alır. Tedavi edilmezse ölümcül olabilir. Olgumuzda akut pankreatitin nadir görülen ve kolaylıkla gözden kaçabilen bir komplikasyonu olan SMVT ‘nin görüntüleme bulgularını ve klinik yaklaşımı ile kısa bir derleme sunulmuştur.Splenomesenteric venous thrombosis (SMVT), ascites and splenomegaly may develop due to the development of pseudocyst and
pseudocyst, which are late complications of acute pancreatitis (>4 weeks). Vascular complications of pancreatitis are an important cause of
morbidity and mortality. Venous complications include SMVT and secondary complications. It can be fatal if left untreated. In our case, a
brief review is presented with the imaging findings and clinical approach of SMVT, a rare and easily overlooked complication of acute
pancreatitis
A Study on the Mediation Role of Organizational Learning Climate in the Effect of Transformational Leadership on Individual Innovation
Full text linkBu çalışmanın amacı dönüşümcü liderliğinin bireysel yenilikçilik üzerine etkisinde örgütsel öğrenme ikliminin aracı rolü gösterip göstermediğini belirlemektir. Ondokuz Mayıs Üniversitesi Tıp Fakültesi Hastanesinde görev yapmakta olan 281 sağlık çalışanı araştırmanın örneklemini oluşturmaktadır. Dönüşümcü liderlik Dönmez ve Toker (2017) tarafından geliştirilen “Dönüştürücü Liderlik Ölçeği”, örgütsel öğrenme iklimi Hüseyin Çırpan tarafından geliştirilen “Örgütsel Öğrenme İklimi Ölçeği” ve bireysel yenilikçilik H. Thomas Hurt, Katherine Joseph ve Chester D. Cook (1977) tarafından geliştirilen ve Türkçe’ye uyarlanması Ayşegül Sarıoğlu (2014) tarafından yapılan “Bireysel Yenilikçilik Ölçeği” ile ölçülmüştür. Dönüşümcü liderliğin bireysel yenilikçilik üzerine etkisinde örgütsel öğrenme ikliminin aracılık rolünün olup olmadığı bootstrap yöntemini esas alan yol analizi ile incelenmiştir. Bu bağlamda iki farklı model kurulmuş ve örgütsel öğrenme ikliminin dönüşümcü liderlik ile bireysel yenilikçilik arasındaki ilişkide aracı rolü oynamadığı bulgusuna ulaşılmıştır.The aim of this study is to determine whether organizational learning climate plays a mediating role in
the effect of transformational leadership on individual innovativeness. 281 healthcare professionals
working at Ondokuz Mayıs University Medical Faculty Hospital constitute the sample of the research.
Transformational leadership “Transformational Leadership Scale” developed by Dönmez and Toker
(2017), organizational learning climate “Organizational Learning Climate Scale” developed by Hüseyin
Çırpan, and individual innovativeness developed by H. Thomas Hurt, Katherine Joseph and Chester D.
Cook (1977). The adaptation to Turkish was measured with the “Individual Innovation Scale” made by
Ayşegül Sarıoğlu (2014). Whether the organizational learning climate has a mediating role in the effect
of transformational leadership on individual innovativeness was examined by path analysis based on the
bootstrap method. In this context, two different models were established and it was found that the
organizational learning climate does not play a mediating role in the relationship between
transformational leadership and individual innovativeness
The effects of the minero-petrographic and geochemical characters of the processible granites in Aksaray on the physico-mechanical properties
No full textÇalışma alanı, İç Anadolu Temel Birimleri (İATB) içerisinde yer almaktadır. Çalışmada, Aksaray çevresinde yer alan işlenebilir granitlerin spektroskopik-petrografik ve jeokimyasal özellikleri ile fiziko-mekanik özelliklerinin belirlenerek bunların karşılaştırılmaları yapılmıştır. Yaylak veya Anadolu grisi olarak adlandırılan granitler Yaylak ve Hacımahmutuşağı civarında Aksaray Pembe olarak adlandırılan granitler ise Kalebalta civarında yüzeylemektedir. Kayaların ana mineralojik bileşenlerini kuvars, ortoklaz, plajiyoklaz, biyotit, amfibol, ± zirkon, ± apatit ve ± opak mineral oluşturmaktadır. Jeokimyasal olarak kayaların tamamı subalkali olup, kalkalkali karakter sunmaktadır. Normatif korund içermeyen granitler 1'den küçük A/CNK oranları (Yaylakort=0.94, Hacımahmutuşağıort=0.95 ve Kalebaltaort=0.97) ile metalümin-peralümin sınırında, daha baskın olarak metalümin karakterlidir. Benzer doku katsayılarına sahip Yaylak (TCort: 3,61), Hacımahmutuşağı (TCort:3,50) ve Kalebalta (TCort: 3,28) lokasyonunda yüzeyleyen işlenebilir granitlerin fiziko-mekanik özellikleri de oldukça birbirine yakın aralıktadır. Bu nedenle doku kaysayıları ile fiziko-mekanik deneştirmeler düşük regresyon katsayıları ile ifade edilen zayıf ilişkiler sergilemektedir. Aynı şekilde kayaların jeokimyasal analiz sonuçlarına göre hesaplanan bazı indeks kimyasal bozunma değerleri de fiziko-mekanik özellikler ile anlamlı bir değişim göstermemektedir. Ancak kayaların ateşte kayıp (LOI) oranları ile Schmidt sertlik (R2:0.8400), tek eksenli basma dayanımları (R2: 0,6644) ve nokta yük dayanımları (R2: 0,6373) arasında belirgin negatif ilişki gözlenmektedir. Granitlerin fiziko-mekanik özellikleriyle içerdiği biyotit minerallerinin spektroskopik özellikleri karşılaştırıldığında 552-1100 cm-1 arasındaki Si-O-Si bükülme bağlarını temsil eden 750-770cm-1 aralığındaki spektrumların kaya dayanımının artmasıyla daha belirginleştiği gözlenmektedir. Sonuç olarak yapılan karşılaştırmalar granitik kayaların fiziko-mekanik testleri yapılmadan onların dayanımlarına, mineralojik, petrografik, jeokimyasal ve spektroskpik verilerle yaklaşımda bulunulabileceğini göstermiştir.Study area is located within the Central Anatolian Basement Units (CABU). In the study, the spectroscopic-petrographic and geochemical properties and physico-mechanical properties of the processible granites around Aksaray were determined and compared. Granites called Yaylak or Anatolian grey crop out around Yaylak and Hacımahmutuşağı, while granites called Aksaray Pink crop out around Kalebalta. The main mineralogical components of the rocks are quartz, orthoclase, plagioclase, biotite, amphibole, ± zircon, ± apatite and ± opaque mineral. Geochemically, all of the rocks are the sub-alkaline and calc-alkaline character. Granites that do not contain normative corundum, with A/CNK ratios less than 1 (Yaylakavr=0.94, Hacımahmutuşağıavr=0.95 and Kalebaltaavr=0.97), show predominantly metaluminous character at the metaluminous-peraluminous border. The physico-mechanical properties of the processible granites cropping out in Yaylak (TCavr: 3,61), Hacımahmutuşağı (TCavr: 3,50) and Kalebalta (TCavr: 3,28) locations with similar texture coefficients are also very close to each other. Therefore, physico-mechanical correlations with texture coefficients show weak relationships expressed by low regression coefficients. Likewise, some chemical alteration indexes do not show a significant change in the physico-mechanical properties. However, a significant negative relationship is observed between the fire loss (LOI) ratios of the rocks and the Schmidt hardness (R2: 0.8400), uniaxial compressive strength (R2: 0.6644) and point load strength (R2: 0.6373). When the physico-mechanical properties of granites are compared with the spectroscopic properties of the biotite minerals, it is observed that the spectra in the range of 750 - 770 cm-1, which represent Si-O-Si bending bonds between 552-1100 cm-1, become more pronounced with the increase in rock strength. As a result, comparisons have shown that granitic rocks can be approached with mineralogical, petrographic, geochemical and spectroscopic data without performing physico-mechanical tests