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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…
Hamdi M Hassaneen, Huwaida M. E Hassaneen, Yasmin Sh Mohammed
The reaction of 1-methylisoquinoline 1 with hy-drazonoyl halides 2 in ethanol in the presence of chitosan under microwave irradiation affords triazoloisoquinoline 4. Product 4 reacts with dimethylformamide-dimethylacetal to give ena- minones 7 which react wit…
Masahiro Matsunaga, Hiroki Murakami, Kaori Yamakawa, Tokiko Isowa, Seisuke Fukuyama, Jun Shinoda, Jitsuhiro Yamada, Hideki Ohira
Happiness is a positive feeling characterized by satisfaction, joy, pleasure, or love. Perceived happiness level is likely associated with health and well-being. However, the neurobiological mechanisms underlying the positive effects of happiness on psycholog…
M Nyarku, S. Y Ganyaglo, E. T Glover, Y Serfor-Armah
The thrust contact between the Togo and the Dahomeyan formations in Ghana is a lithotectonic boundary that exists between two major Precambrian formations which are of importance to geologists owing to the fact that Precambrian rocks in Ghana host almost all…
Fryad Z Henari
In this paper the results from investigations of the nonlinear refractive index and nonlinear absorption coefficient of Bromophenol Blue using the Z-scan technique with a continuous wave laser beam at wavelengths 488 nm and 514 nm are presented. It was observ…
E. A Bruevich
We present a method of 13 late-type main-sequence stars chromospheric flux observation data calculations. These Sun-like stars have well-determined cyclic flux variations similar to the 11-year solar activity cycle. Our flux prediction is based on chromospher…
A. H. Bekheit
Asymmetries between the divertor legs of small size divertor (SSD) tokamak plasma edge are noticed to reverse when the direction of toroidal magnetic field is reversed. In the present paper the small size divertor tokamak plasma edge under effect of toroidal…
Shahriare Ghammamy, Kheyrollah Mehrani, Somayyeh Rostamzadehmansor, Hajar Sahebalzamani
Three new tetrahalogenoferrate (III) complexes with the general formula (R)4N[FeCl 3 X]– in that (X=F-,Cl-,Br-) synthesized by the reaction of FeCl 3 with (C 2 H 5 )4NF, (CH 3 )4NCl and (C 4 H 9 )4NBr salts in anhydrous CH 3 CN. These were characterized by el…
Irena Wacławska, Magdalena Szumera
Immobilization of cadmium contamination in soils by precipitation of nonassimilable for plants Cd-phosphates was considered. Glassy fertilizer of controlled release rate of the nutrients for plants as a source of phosphate anions was applied. The negative rol…
Pedro O. Dunstan
The adducts [MBr2(L)n], where M = Fe, Co, Ni, Cu or Zn; L = 1,2,3,4-tetrahydroquinoline (THQ); n = 0.75, 1 or 2 have been obtained from the interaction in hot solution of THQ with the metal(II) bromides. The compounds were characterized by melting points, ele…
Leslie V. Woodcock
A correlation between maxima in virial coefficients (B n ), and “kissing” numbers for hard hyper-spheres up to dimension D = 5, indicates a virial equation and close-packing relationship. Known virial coefficients up to B 7 , both for hard parallel cubes and…
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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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