İslam Ülkelerinde Bilim, ve Teknolojinin Gelişimi İçin Enformasyon İhtiyaçlarının Karşılanması

Bilim ve teknoloji alanında yapılan çalışmalar günümüzde çok büyük aşa­malara ulaşmıştır. Bu konuda yatınm yapan ülkeler aynı ramanda endüstri­leşme alanında da ileri hamleler yaparak gelişmekte olan ülkeler üzerinde teknolojik ve ekonomik hegamonya kurmuşlardır. Yine aynı ülkeler, bilim­sel enformasyon üretimi konusunda da ilk birkaç sırayı paylaşmaktadırlar* Bilim ve teknolojinin ülkelerin kalkınmalarında oynadığı rol tüm ülkeler tarafından kabul edilmektedir. Yine kabul edilmektedir ki, bilimsel ve tek­nik enformasyon, bilimsel ve teknolojik alanlarda beklenen atılımlar için önemli temel öğelerden biridir. Gelişmiş ülkelerle İslam ülkeleri arasmda büyüyen enformasyon açığım yavaşlatmak ve durdurmak için bu konuda işbirliği yapmak zorunludur

Shielding features of concrete types containing sepiolite mineral: comprehensive study on experimental, XCOM and MCNPX results

Natural sepiolite mineral is a naturally occurring clay form belonging to a part of layered silicate. Because of its advantages such as low production cost, light-weight and convenient, it may be selected as an alternative shielding material to others. Radiation shielding performances of some concretes to sepiolite and B4C addictive have been researched reported in a wide energy region of 0.08–1.333 MeV using experimental data, MCNP and XCOM. The simulated data obtained by MCNPX are discussed and compared with the experimental results as well as with the XCOM results. The simulations match the experiments very well except for S3 sample. From the measurement, the maximum gamma-ray attenuation was detected in the concrete specimen with 10% sepiolite (S1) while the minimum attenuation of gamma-ray was noted in the concrete specimen with 30% sepiolite (S3). The addition of sepiolite mineral to concretes may be an alternative option that can be used in several radiation protection applications

A Comparison of the LVDP and {\Lambda}CDM Cosmological Models

We compare the cosmological kinematics obtained via our law of linearly varying deceleration parameter (LVDP) with the kinematics obtained in the {\Lambda}CDM model. We show that the LVDP model is almost indistinguishable from the {\Lambda}CDM model up to the near future of our universe as far as the current observations are concerned, though their predictions differ tremendously into the far future.Comment: 6 pages, 5 figures, 1 table, matches the version to be published in International Journal of Theoretical Physic

A metal dicyanamide cluster with high CO2/N2 selectivity

A new microporous metal dicyanamide cluster, Co(hmt)(dca)2 (hmt: hexamethylenetetramine, dca: dicyanamide), with accessible N-donor sites exhibits high CO2/N2 selectivity, 83 at 295 K and 1 bar, for a mixture with a 15:85 CO2 to N2 ratio. Adsorption studies show that the use of hmt and dca moieties as building blocks for solid adsorbents can enhance the CO2:surface interactions due to N atoms available inside the pores, which is confirmed by X-ray single crystal studies. © 2016 Elsevier Inc. All rights reserved