IOSR-JAP   Volume-12 ~ Issue-1 ~ Jan. – Feb. 2020

ABSTRACT This paper is all about golden ratio Phi...

Keywords: Golden Ratio; Cosmological Constant.

[1]. Nafish Sarwar Islam, "Mathematical Sanctity of the Golden Ratio"; IOSR Journal of Mathematics (IOSR-JM), e-ISSN: 2278-5728, p-ISSN:2319-765X. Volume 15, Issue 5 Ser. II (September – October 2019), PP 57-65.
[2]. Nafish Sarwar Islam, "The Golden Ratio : Fundamental Constant of Nature"; Publication date 04 Nov 2019 Publisher LAP Lambert Academic Publishing, ISBN10 6139889618, ISBN13 9786139889617

ABSTRACT Metal tartrate compounds like cadmium tartrate and cobalt tartrate find piezoelectric and electrochemical applications, respectively. In the present work, the growth of pure and mixed crystals of cobalt and
cadmium levotartrate is accomplished by gel method. Spherulitic and dark brown crystals are obtained. The metallic element content in the crystals is estimated by EDAX. The analysis of FTIR spectroscopy data confirms
the presence of various functional groups. The powder XRD suggests the mixed phase nature of the grown crystals. By applying the Rietveld analysis the two phases, i.e. orthorhombic phase of cobalt levo-tartrate and
monoclinic phase of cadmium levo-tartrate were identified. The thermo-grams confirm the conversion of crystals into oxide form after removal of water molecules. DTA curves show the peaks corresponding to related
reactions..

Keywords: cobalt and cadmium mixed levotartrate crystals, gel method, FTIR, Powder XRD, TGA, DTA.

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ABSTRACT For the first time, it has been theoretically shown that in an external electric and weak magnetic field, when there is a temperature gradient, an impurity semiconductor emits energy from itself with a certain
frequency. The values of the current oscillation frequency and the limit of variation of the external electric field are found. It is shown that in a medium the resistance has only an ohmic character. It is stated that in the
aforementioned semiconductor, when the concentration of electrons and holes is determined from the obtained expression in theory, the injection of contacts play the main role for the appearance of the indicated current
oscillation in the circuit.

[1]. E.R. Hasanov, RasoulNezhadHosseyn, Az.Panahov and Ali IhsanDemirel, "Instability in Semiconductors with Deep Traps in the Presence of Strong ( H  C)   ,Advanced Studies in Theoretical Physics., Year 2011, Vol. 5 N 1, p.25-30.
[2]. Demirel A.I.,Panahov A.Z., E.R.Hasanov. Radiations of electron –type conductivity environments in electric and magnetic field,
Advanced Studies in Theoretical Physics, 2013, vol.8, N 22, p.1077-1086.
[3]. E.R. Hasanov, A.Z. Panahov, A.I. Demirel. High frequency Energy Radiation of n-type semiconductors at constant electric and
magnetic field. Adv.StudiesTheor.Phys. Vol.7, 2013, No21, p.1035-1042.
[4]. E.R.Hasanov, R.A.Hasanova. "External and Internal Instability in the Medium Having Electron Typ Conductivity " , IOSR Journal
of Applied Physics, Volume 10, Issue 3 Ver. II (May-June. 2018), p. 18-26.
[5]. F.F.Aliev, E.R.Hasanov. "Nonlinear Oscillations of the charge the Curriers Concentration and Electric Field in Semiconductors
with Deep Traps", IOSR Journal of Applied Physics, Volume 10, Issue 1 Ver. II (Jan.-Feb. 2018), p. (36-42).

ABSTRACT In this study, bitter leaf extract were used as an inhibitor on M- steel in 1 mol HCl and 0.5 mol H2SO4. Corrosion act of M- steel in the company and devoid of inhibitor (bitter leaf extracts) were deliberated with potentiodynamic polarization and electrochemical impedance process. The tests were done at diverse concentrations, temperatures and durations. Potentiodynamic polarization arcs for M- steel in 1 mol HCl and 0.5 mol H2SO4 solutions in company with devoid of bitter leaf extort. In 1 mol HCl environment, incorporation of inhibitor declines the oxidization rate i.e. swings in cathodic and anodic polarization archs to lesser worth of current densities to greater level. Thus, reactions of anodic and cathodic were inhibited, same act was observed in 0.5 mol H2SO4......

Keywords: Acid, Bitter Leaf, Corrosion, Extort, Inhibitor

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[2]. Abd El Rehim,S.S., M.A.M and Khaid, K.F.(2001). "The Inhibition of 4 – (21 – amini – 5 – methyl phenylazo) antipyridine on corrosion of mild steel in HCl solution", Materials Chemistry and Physics, 70, 268 – 273.
[3]. M.A. Quraisha, R. Sardar. Corrosion 58 (2002) 103.
[4]. M.A. Quraisha, R. Sardar. Corrosion 58 (2002) 748.
[5]. E.A. Noor, Corros. Sci. 47 (20050 33.

ABSTRACT Electrogravitodynamics (EGD) is presented as the electromagnetic radiation study in a gravitational environment considering, in terms of particles, the gravitons influence on photons and, vice versa. Similar to the electromagnetic field structure composed of two individual fields, the electric and the magnetic, the gravitational field as an influence and relatable to the electromagnetic, cannot have a single component; the gyrotation field Ω , associated with the irrotational gravitation field 𝑔 , is justified so, defined as a solenoid field analogous to the magnetic field and function of the rotation and mass of the material object/particle carrying the sources of such fields. The...

Keywords: Electrogravitodynamics, EGD, Gyrogravitation, Graviton, Photon, Fields, Electric Mass

[1]. M. A. Gottlieb, and R. Pfeiffer, Radiation Damping. Light Scattering, 32, in Institute of Technology, The Feynman Lectures on Physics, (California, 2010).
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[4]. J. Joglar Alcubilla, Where Does Electrogravitodynamics Come From?, https://www.researchgate.net/project/Electro-Gravitodynamics, 2019
[5]. J. Joglar Alcubilla, On Subquantum Electromagnetic and Gravitational Interactions, IOSR Journal of Applied Physics, 11 (2), 2019, 01-09, doi: 10.9790/4861-1102010109

ABSTRACT Introduction: This study includes the significant increase of image quality and the new potential for dose reduction. It intends to assess digital x-ray machine image quality using quantitative analysis for five organs; Feet exam, breast exam, Pelvic exam, Spinal exam and chest exam in police Hospital in Sudan in Khartoum State. Statement of the problem: The evaluation of x-ray using quality mostly done subjectively, using visual perception which gives unreliable result these true of quantitative methods were applied more accurate results can be obtained and hence correlation of problem will be most accurate. Purpose: this study aimed to assessment of digital....

Key words: high and low intensity regions , image quality , enhancement, signal, noise, contrast, digital X- ray

[1]. Samei E. Image quality in two phosphor-based flat panel digital radiographic detectors. Med Phys 2003; 30:1747– 1757.
[2]. H Alsleem1 MSc, BSc
[3]. R Davidson2 PhD, MAppSc(MI), BBus, FI, Quality parameters and assessment methods of digital radiography images, 2012.
[4]. NW Marshall Radiation Safety Section, Clinical Physics CAU, Barts and The London NHS Trust, calculation of quantitative image quality parameters notes Describing the Use of OBJ_IQ_reduced, April 2009.
[5]. W. Chung, J. Jung, S. Lee, S. H. Park, E. H. Mo; 1Ansan-si, Gyeonggi-do/KR, Iksan-si/KR, The Quantitative Performance Evaluation of the Image by Estimated Removal of Scattered Radiation Based on Similarity Analysis of Reference Image , 2017.