Equations of state for amorphous and crystalline nickel by means of molecular dynamics method

There are few theoretical studies on the equation of state (EOS) for amorphous materials while much work has been carried out for crystalline systems. In this study, the EOSs for both crystal-and amorphousstructured nickel are obtained by using an anisotropic molecular dynamics method based on the Voter-Chen formalism of embedded atom method. In order to achieve the EOSs, polynomial curve fitting method has been applied to the data obtained from molecular dynamics simulations carried assuming isothermal and isobaric conditions. Isothermal bulk modulus and their pressure derivatives for both amorphous and crystal structures have also been calculated. The results are compared with the values obtained from well-known Vinet and Davydov EOSs. © TÜBIṪAK

Laboratuvardan Kliniğe Transplantasyon Pratiği

Transplantasyon; Temel Tıbbi Bilimler, Moleküler Tıp, Genetik ve İmmünolojiden klinik uygulamalardan destek alan multidisipliner bir tıp dalıdır. Temel bilimlerdeki başarılı çalışmaların kliniğe uygulanması, klinikte karşılaşılan sorunların da, oluşturulan deneysel hayvan modellerinde irdelenmesi, elde edilen bilgilerin klinik uygulamalara aktarılması; diğer deyişle tecrübelerin “Translational” özellikli olması günümüz transplantasyon çalışmalarında bir gerekliliktir. İmmün sistemin bileşenlerinin ve reaksiyonlarının iyi bilinmesi, hücreler arası ilişkilerde greftin reddi ya da kabul edilmesinin şartlarını doğru anlamak ve uygun laboratuvar yöntemleri ile klinik durumun aydınlatılması transplantasyonda stratejik önemdedir. Bu nedenle, klinik transplantasyon çalışmaları yapanlar temel bilimler bilgileri ile de donanımlı olmalıdırlar. Multidisipliner bir dal olma bilinci ile yapılan klinik transplantasyon çalışmalarında başarı yakalanmaktadır. Laboratuvardan Kliniğe Transplantasyon kitabımızda tüm yönleri ile transplantasyonun organizmaya etkileri ve bunların klinik sonuçlarını, çalışmalarımızın ışığında sunmayı ve tartışmayı hedefledik. Editör: Prof.Dr. Mesut İzzet TİTİZ Yardımcı Editör: Doç.Dr. Pınar AT

Investigation of Lin, H-Lin and O-Lin interactions in fcc(100) and fcc(110) surface symmetries by molecular dynamic simulation method

Molecular dynamic simulation method (MDSM) was used for investigating lithium atom interactions and the chemisorption of atomic hydrogen and atomic oxygen on the lithium surface. A time-order series of atomic co-ordinates representing the motion of every atom in the system was generated by MDSM method. The microclusters containing 3-7 atoms of various elements in different crystalline structures were studied. The calculated results from MDSM were found to agree with those of literature

Physics course attitudes scale for high school students: A validity and reliability study

The purpose of this study is to develop an up-to-date scale with high validity and reliability that could reveal the attitudes of high school students towards the physics course. In the process of developing the scale in question, three independent samples were formed, and the data obtained from a total of 1118 high school students were analyzed. Firstly, the opinions of 152 high school students on the physics course were collected in written form, and a 58-item pool was formed. Afterwards, the draft scale which was designed as a 5-point Likert-type scale whose items were reduced to 43 based on expert opinions was applied on 602 high school students. Based on the data obtained, an exploratory factor analysis (EFA) was carried out. With the EFA, it is determined that 22 items of the scale have factor loads between 0.490 and 0.816, while they explain 66.276% of the total variance and are distributed under four factors. These factors are named as interest, unwillingness, academic self and necessity. Additionally, these For all items in the scale, item-factor and item-test correlation coefficients were calculated, and it is determined that each item is consistent with not only the factor it is under but also the entire test