FRACTIONAL SOLUTIONS OF A CONFLUENT HYPERGEOMETRIC EQUATION

Resat Yilmazer,Erdal Bas 충청수학회 2012 충청수학회지 Vol.25 No.2

Anti-tank impact absorption with a reinforced concrete plate design

Berivan Yilmazer Polat,Sedat Savas,Alper Polat Techno-Press 2023 Advances in concrete construction Vol.15 No.4

Anti-tank weapons are among the infantry weapons used by the armies of many countries. Anti-tank rockets and explosives such as TNT, generally used for armour piercing, are also frequently used in terrorist attacks. These attacks damage the protection facilities built from reinforced concrete. Rockets or similar explosives' rapid speed and burst temperatures pierce reinforced concrete during strikes, resulting in casualties and damage to crucial strategic structures. This study aimed to devise an economic and applicable reinforced concrete plate that could absorb the impact of anti-tank rockets and Trinitrotoluene (TNT) type explosives. Therefore, 5 different samples, produced from C50 reinforced concrete and 150×150 cm in size, were formed by combining plates of different numbers and thicknesses. Also, a sample, which was a single thick plate, was prepared. In destructive testing, Rocket Propelled Grenade (RPG-7) was used as the anti-tank rocket launcher. As a result of this study, the impact damage was reduced with hollow concrete plate geometries, and recommendations were developed for complete prevention.

Could the Platelet-to-Lymphocyte Ratio be a Novel Marker for Predicting Invasiveness of Cervical Pathologies?

Kose, Mesut,Celik, Fatih,Kose, Seda Kayman,Arioz, Dagistan Tolga,Yilmazer, Mehmet Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.3

Purpose: To determine whether the preoperative platelet to lymphocyte ratio (PLR) could predict invasiveness of cervical pathologies. Materials and Methods: Patients with preinvasive and invasive diseases were reviewed retrospectively, over a nine-year period, 2005-2014. The pathological records and completed blood counts of the patients were collected and recorded in the SPSS program. Patients were divided in two groups, preinvasive and invasive. Results: The median PLR was significantly higher in the invasive group than in the preinvasive group (p=0.03). There was a correlation between invasion of cervical cancer and white blood cell count, red cell distributing width (RDW), neutrophil-lymphocyte ratio (NLR), and PLR. Conclusions: This study showed that patients with uterine cervical cancer may present with leukocytosis, increased RDW, NLR and PLR. These cheap and easily available parameters, especially PLR, may provide useful information about the invasiveness of cervical lesions.

Serotonin Expression in Lichen Planus Lesions and Its Relationship with Depression/Anxiety

( Gokce Isil Kurmus ),( Muzeyyen Gonul ),( Filiz Canpolat ),( Demet Yilmazer ),( Eylem Sahin Cankurtaran ) 대한피부과학회 2019 Annals of Dermatology Vol.31 No.2

Background: Psychological factors such as stress, depression, and anxiety have been documented to contribute to the development of lesions in lichen planus (LP). Objective: To evaluate the relationship between serotonin expression in LP lesions and depression/anxiety. Methods: Forty patients (22 females, 18 males) with LP and 20 healthy control subjects were included in this study. The severity of LP was assessed with the palmar method (using the measurement of affected body surface area [BSA]). The depression and anxiety scores were measured with Beck's depression inventory (BDI) and Beck's anxiety inventory (BAI). The expression of serotonin was determined via immunohistochemistry in LP lesions and in the control group skin using a monoclonal antibody to serotonin. Results: The skin biopsies of the LP patients had significantly higher levels of serotonin than those of the control subjects (p<0.001). In the LP patients, and there was a positive correlation between serotonin expression and LP severity (p=0.022). Based on the results from the BDI and BAI, there was a significant relationship between the severity of depression/anxiety and intensity of serotonin expression (p <0.001). Conclusion: Data from this study suggest that serotonin may have a possible role in the pathogenesis of LP. Further, the relationship between serotonin expression in acute cutaneous lesions and the depression/anxiety scores indicates that serotonin may be a mediator for the association of LP and depression/anxiety simultaneously. There is a need for more specific studies showing the expression of serotonin in the lichen planus to demonstrate the cause or effect. (Ann Dermatol 31(2) 146∼153, 2019)

Quechua Language Revitalization Policies and Planning in Peru, Bolivia, and Ecuador

Tuba Yilmaz(Tuba Yilmaz ) 전남대학교 교육문제연구소 2023 New Horizons of Educational Research Vol.3 No.1

The Quechua language, spoken by indigenous Quechuans, faced endangerment due to the widespread use of Spanish. This paper explored the language revitalization policies for Quechua language in South American countries, particularly Peru, Bolivia, and Ecuador. The paper began by presenting a concise overview of Quechua and the Quechuan community, elucidating the factors contributing to Quechua's endangered status and the prevalence of Spanish monolingualism. Subsequently, it delved into an exploration of language revitalization policies and challenges within each country, framed by corpus planning, status planning, acquisition planning, and prestige planning. The paper concluded with a discussion on the outcomes of Quechua revitalization efforts. This paper offered valuable insights for countries adopting a 'language as a resource approach,' and particularly those endeavoring to implement additive policies for their extinct, endangered, or threatened languages.

Radical Oncological Surgery and Adjuvan Therapy in Non-Small Cell Lung Cancer Patients over 70 years of Age

Demirci, Nilgun Yilmaz,Ulger, Sukran,Yilmaz, Ulku,Aydogdu, Koray,Yilmaz, Aydin,Erdogan, Yurdanur Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.11

Background: The incidence of lung cancer increases with age. Approximately 50% of non-small cell lung cancer (NSCLC) patients are over 70 years old. Because of the increasing elderly population, treatment approaches in this age group continue to be studied similar to groups of young people. Materials and Methods: In the current study, 26 patients who underwent radical surgery and adjuvan chemoradiation at Ataturk Chest Diseases and Chest Surgery Training and Research Hospital were evaluated retrospectively. Results: Of 21 patients (81%) were male and the average age was 74.4. Lobectomy was performed in 18 cases, pneumonectomy in 3, sleeve lobectomy in 3 and bilobectomy in 2. There was no perioperative or early period mortality. Overall survival was 24.5 months. Conclusions: From our study, lung cancer surgery and adjuvant therapy can be performed safely with low morbidity in the elderly.

Effect of the PC, diatomite and zeolite on the performance of concrete composites

Yilmaz Kocak,Muhsin Savas 사단법인 한국계산역학회 2016 Computers and Concrete, An International Journal Vol.17 No.6

This study has been carried out to investigate the effect of the surface properties of Portland cement, diatomite and zeolite on the performance of concrete composites. In this context, to describe the materials used in this study and determine the properties of them, chemical, physical, mineralogical, molecular, thermal, and zeta potential analysis have been applied. In the study, reference (Portland cement), 10%–20% diatomite, 10%–20% zeolite, 5+5%–10+10% diatomite and zeolite were substituted for Portland cement, a total of 7 different cements were obtained. Ultrasonic pulse velocity, capillary water absorption and compressive strength tests were performed on the hardened concrete specimens. Hardened concrete tests have been done on seven different types of concrete, for 28, 56 and 90 days. As a result of experiments it has been identified that both the zeolite and diatomite substitution has a positive effect on the performance of concrete.

Investigation of ICAM-1 and β3 Integrin Gene Variations in Patients with Brain Tumors

Yilmaz, Umit,Zeybek, Umit,Kahraman, Ozlem Timirci,Kafadar, Ali Metin,Toptas, Bahar,Yamak, Nesibe,Celik, Faruk,Yaylim, Ilhan Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.10

Background: Primary brain tumors constitute a small percent of all malignant cancers, but their etiology remains poorly understood. ${\beta}3$ integrin (ITGB3) has been recognized to play influential roles in angiogenesis, tumor growth and metastasis. Intercellular adhesion molecule-1 (ICAM-1) is a surface glycoprotein important for tumor invasion and angiogenesis. The aim of this study was to investigate whether specific genetic polymorphisms of ICAM-1 and ITGB3 could be associated with brain cancer development and progression in a Turkish population. Our study is the first to our knowledge to investigate the relationship between brain tumor risk and ICAM-1 and ${\beta}3$ integrin gene polymorphisms. Materials and Methods: The study covered 92 patients with primary brain tumors and 92 age-matched healthy control subjects. Evaluation of ${\beta}3$ integrin (Leu33Pro (rs5918)) and ICAM-1 (R241G (rs1799969) and K469E (rs5498)) gene polymorphisms was performed by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Results: According to results of our research, the A allele of the ICAM-1 R241G gene polymorphism appeared to be a risk factor for primary brain tumors (p<0.001). Similarly, the frequency of the A mutant allele of ICAM-1 R241G was statistically significant in patients with brain tumors classified as glioma (p<0.001). When allele and genotype distributions of ICAM-1 K469E, ICAM-1 R241G and ${\beta}3$ integrin Leu33Pro gene polymorphisms were evaluated with age, sex, and smoking, there were no statistically significant differences. Haplotype analysis revealed that the frequencies of GAC (rs1799969-rs5498-rs5918) and GAT (rs1799969-rs5498-rs5918) haplotypes were significantly lower in patients as compared with controls (p=0.001; p=0.036 respectively). Conclusions: This study provides the first evidence that ICAM-1 R241G SNP significantly contributes to the risk of primary brain tumors in a Turkish population. In addition, our results suggest that ICAM-1 R241G in combination ICAM-1 K469E may have protective effects against the development of brain cancer.

IDENTITIES ON THE CHANGHEE NUMBERS AND APOSTOL-TYPE DAEHEE POLYNOMIALS

YILMAZ SIMSEK 장전수학회 2017 Advanced Studies in Contemporary Mathematics Vol.27 No.2

By using generating functions and p-adic integral methods, we study, survey, and investigate various properties of the special numbers and polynomials including the Bernoulli numbers and polynomials, the Euler numbers and polynomials, the Changhee numbers and polynomials, the Daehee numbers and polynomials, the Bernoulli numbers and polynomials of the second kind, the Stirling numbers, and the Catalan numbers. We define Apostol-type Daehee numbers and polynomials of higher order. We derive some properties, relations and identities on these numbers and polynomials. Finally, we give some applications of the p-adic Volkenborn integral including the special numbers and polynomials. We give some remarks and observations associated with the Bernoulli numbers, the Euler numbers, the Daehee numbers, and the Changhee numbers.

Evaluation of the Radiation Pneumonia Development Risk in Lung Cancer Cases

Yilmaz, Sercan,Adas, Yasemin Guzle,Hicsonmez, Ayse,Andrieu, Meltem Nalca,Akyurek, Serap,Gokce, Saban Cakir Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.17

Background: Concurrent chemo-radiotherapy is the recommended standard treatment modality for patients with locally advanced lung cancer. The purpose of three-dimensional conformal radiotherapy (3DCRT) is to minimize normal tissue damage while a high dose can be delivered to the tumor. The most common dose limiting side effect of thoracic RT is radiation pneumonia (RP). In this study we evaluated the relationship between dose-volume histogram parameters and radiation pneumonitis. This study targeted prediction of the possible development of RP and evaluation of the relationship between dose-volume histogram (DVH) parameters and RP in patients undergoing 3DCRT. Materials and Methods: DVHs of 41 lung cancer patients treated with 3DCRT were evaluated with respect to the development of grade ${\geq}2$ RP by excluding gross tumor volume (GTV) and planned target volume (PTV) from total (TL) and ipsilateral (IPSI) lung volume. Results: Were admitted statistically significant for p<0.05. Conclusions: The cut-off values for V5, V13, V20, V30, V45 and the mean dose of TL-GTV; and V13, V20,V30 and the mean dose of TL-PTV were statistically significant for the development of Grade ${\geq}2$ RP. No statistically significant results related to the development of Grade ${\geq}2$ RP were observed for the ipsilateral lung and the evaluation of PTV volume. A controlled and careful evaluation of the dose-volume histograms is important to assess Grade ${\geq}2$ RP development of the lung cancer patients treated with concurrent chemo-radiotherapy. In the light of the obtained data it can be said that RP development may be avoided by the proper analysis of the dose volume histograms and the application of optimal treatment plans.