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Natural Science is an international journal dedicated to the latest advancements in natural sciences. The goal of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of natural sciences. All manus…
Gerhard Kramm, Ralph Dlugi
In this paper, we scrutinize two completely different explanations of the so-called atmospheric greenhouse effect: First, the explanation of the American Meteorological Society (AMS) and the World Meteorological Organization (W?MO) quan- tifying this effect b…
Saman Ebrahimi, Ali Pazirandeh
Cs-137 radioactive source with 661.7 keV gamma- ray energy and Am-241 with 59.5 keV gamma-ray energy were used to study the body structure of materials by examining transmitted gamma-ray spectrum using a scintillation detector, NaI(Tl). Due to specific charac…
Nadir Veiga Vier, Ruth Meri Lucinda-Silva
The aim of this study was to evaluate the effect of coating of alginate-chitosan (AL:CS) beads on the colonic drug delivery. The AL:CS systems containing triamcinolone (TC) were coated with the HPMCP and Eudragit? L100 by immersion and by spraying methods. Th…
Kosuke Nakagoshi, Kunio Yoshizumi
Photobleaching of aged traditional Japanese paper that has been thermally yellowed during storage for 200 years was examined from the standpoint of accumulated light radiation dosage in a museum environment. The light intensity was evaluated using a blue wool…
Zeinab Abdel Hamid, Sayed F. Moustafa, Fatma A. Morsy, Nevien Abdel Atty khalifa, Fatma Abdel Mouez
Copper composites reinforced with diamond particles were fabricated by the powder metallurgical technique. Copper matrix and diamond powders were mixed mechanically, cold com- pacted at 100 bar then sintered at 900?C. The prepared powders and sintered copper/…
Diane Doser, Musa Hussein, Laura F. Serpa, Aaron A. Velasco
To unravel the forces and better understand the processes that drive continental rifting, and to understand the role of sedimentation in promoting the rifting process, we compare; the different geological features of two narrow rifts, the Salton Trough and De…
Tariq Al-Najjar, Abd Al-Wahab Al-Shiyab
Composition and abundance of submerged marine litter at one selected site within a coral reef area along the Jordanian coast of the Gulf of Aqaba has been estimated. The litter was collected in a clean up voluntarily campaigns that took place in the period 19…
Cajus Diedrich
A femur fragment with an Early Lutetian (early Middle Eocene) age is the world’s oldest fossil record from a seal, and, is described as Praephoca bendullensis nov. gen. nov. spec. This find pushes back the earliest evolution of seals into the Paleocene epoch.…
Viktor N. Kopeitsev, Mikhael E. Romash, Aleksei Y. Varaksin
The purposes of the paper are threefold: 1) to show the fundamental possibility of physical simulation of non-stationary wall-free concentrated air vortices (called here as tornado-like vortices) under laboratory conditions without using of the mechanical rot…
S. Fares, Ali.A.M. Yassene, A. Ashour, M.K. Abu-Assy, M .Abd El-Rahman
Fourteen samples of marble were collected from different factories in Egypt. The samples were crushed, dried in controlled furnace for around twenty four hours, and then stored for five weeks in plastic Marinelli beakers. Concentrations and the U- and Th-bear…
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Natural Science is an international journal dedicated to the latest advancements in natural sciences. The goal of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of natural sciences. All manus… All articles are open access under a CC BY 4.0 licence, with authors retaining copyright.
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