IOSR-JAP   Volume-12 ~ Issue-5 ~ Sep. – oct. 2020

ABSTRACT: Disturbances in climatic parameters; such as the spatio-temporal variability of operational data,air temperature,specific humidity,wind direction… are poorly understood throughout the time in DRC airport [RatnayakeU.Herath S. (2005)]. The acquisition of spatio-temporal data obtained by the LANDSAT space station between 1987 to 2018 of Goma International airport in DRC,corresponding to the period vulnerable to thermal extremes and serious aviation accidents and incidents at this airport, allow us to examine the impact of climate disruption and rely it to the flight safety [Kabasele,all,2017]. This study is necessary for the prevention of climatic risks likely to impact the safety of aircraft in extreme and abnormal fluctuations of climatic parameters conditions to cause risks in aeronautical operations [ENAC ALUMNI,2020].

Keywords: climate disturbance, spatialization, flight safety, GOMA airport

[1]. Albert KABASELE YengaYenga ,Contribution of the spatial remote sensing in the dynamic modellling of the temperature of soil and green carbon stock on the city province of Kinshasa,OSRNAC,Volume 1,October 2017.
[2]. Albert KABASELE YENGA YENGA ,SylvainLUSHIKU,Augustin KABAMBA et Idriss RUZINDANA,Utilisation de la station virtuelle en orbite Héliosynchrone dans l'amélioration et validation de la Modélisation des anomalies climatiques dans la ville Province de Kinshasa dans la revue scientifique Télédétection SIG Modélisation et Géoscience,Vol1.Kinshasa,oct 2017.
[3]. Albert KABASELE YENGA YENGA, la guerre de l'eau,ouvrage edité par la Revue des Géosciences et innovations Spatiale de l'Institut Géographique du Congo,vol III,IGC-KINSHASA ,Janvier 2020
[4]. Albert KABASELE YENGA YENGA, Modélisation du Fleuve Congo et Marées Océaniques de Muanda par ClimatologieSpatiale,ouvrageédité par la Revue des Géosciences et innovations Spatiale de l'InstitutGéographique du Congo,vol III,IGCKINSHASA ,Janvier 2020
[5]. AlbertKABASELE Yenga-Yenga, (2011), Modélisationatmosphérique du temps Hélio-pluviométriquequ'il fait dans la ville de Kinshasa, article, Numérospécial, Vol1, IGC.heat island at goma airportheat island at goma airport.

ABSTRACT:Background and purpose:During radiotherapy, setup errors in patient positioning play a vital role in tumor control and normal tissue overdosage. This analysis aimed to assess patient setup errors and to suggest maximal planning target volume (PTV) for different treatment sites.
Material and method:Using computed tomography (CBCT) and electronic portal imaging device (EPID). In 100 patients, a total of 300 sessions have been assessed for head and neck, thorax, breast, abdomen, and pelvic. Systematic and random population errors and the 3D shift vector is determined. PTV margins were calculated using a formula from van Herk.
Results:systematic and random errors were 0.08, 0.16 and 0.11 cm and 0.1, 0.21 and 0.13 cm for head and neck cases whiles values of 0.17, 0.18....

Keywords:Systematic error; Random error; planning target volume; Patient setup uncertainty

[1] ICRU. Prescribing,Recording and Reporting Photon Beam Therapy (Supplement to ICRU Report 50). 1993.
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[3] ICRU. Prescribing ibi , R Recording And Reporting Electron Beam Therapy(ICRU Report 71). 2004.
[4] ICRU. ICRU Report 91. vol. 14. 2017. https://doi.org/10.1093/jicru/ndx017.
[5] Deluca PM. International Commission on Radiation Units and Measurements. vol. 14. 2014. https://doi.org/10.1093/jicru_ndw040.

ABSTRACT: Conditions of indium (III) selenide synthesis in organic and inorganic mediums are studied in this work. Select the area volume yellow precipitate. To a solution of indium tartrate complex selenerizing added sodium borohydride at pH 10-11. It is ascertained that the nano- and micro particles of 2 3 In Se compound produced in organic medium (ethylene glycol) form in the shape of flakes at 453 ‒ 473 K for 10 ‒ 12 hours. Indium selenide output is 95 ‒ 97 % in organic medium, 98 ‒ 99 % in inorganic medium. Chemical composition of the sediment and its release rate from the solution has been determined. The rate of the sediment of deposition from the solution was determined. Thermal and X-ray analyses of resulting indium selenide have been made.

Keywords:Indium (III)selenide, nanoparticles. thermographic analysis, hydrothermal method, X-ray analysis, deposition rate, chemical analysis.

[1]. Chaiken A. [and others]. Structural and electronic properties of amorphous and polycrystalline 2 3 In Se films. Journal of Applied
Physics, 2003, Vol. 94, Issue 4, http://dx.doi.org/10.1063/1.1592631
[2]. Tulenin S.S. [and others]. Deposition conditions, the composition and structure of the chemically deposited films of 2 3 In Se .
Journal of Inorganic Chemistry, 2016, Vol. 61, Issue 4. pp. 1-8.
[3]. Rasmussen A.M. [and others]. Pressure-induced phase transformation of 2 3 In Se . http://dx.doi.org/10.1063/1.4792313
[4]. Tulenin C.C. [and others]. Diagrammy In2S3 education films and glass-ceramics in the precipitation reaction according to
potentiometric titration. Journal of Physical Chemistry, 2013, Vol.87, Issue 10., рр.1791-1797.
[5]. Xin Tao and Yi Gu Crystalline–Crystalline Phase Transformation in Two-Dimensional 2 3 In Se Thin Layers. Nano Lett., 2013, 13
(8), pр. 3501-3505.

ABSTRACT: The scintillation process remains one of the mostuseful methods available for the detection and spectroscopy of a wide assortment of radiations. The world seeks to development and implementation of equipment and services related to radiation detection.A new scintillator, cerium bromide (CeBr3), for gamma-ray spectroscopy was proposed. The 3" x 3" cylindrical Cerium Bromide (CeBr3) and (Sodium Iodide) NaIscintillation detectors were simulatedby MCNP-5 code and compared.The Gaussian Energy Broadening (GEB) card was used in simulation codeto study the full energy peak efficiency (FEPE) ofsuch detectors. Gamma lineslying in the energy range from 100keV to 2 MeV are used as indicators to compare these two types of detectors.The scintillation response was measured using standard gamma ray sources (57Co, 235U,137Cs and60Co). The response of the two detectors to gamma rays was compared and discussed.

Keywords: MCNP Code, Cerium Bromide (CeBr3), Sodium Iodide (NaI), Non-Destructive Assay (NDA).

[1]. Kanai S. Shah, Jaroslaw Glodo, William Higgins, Edgar V.D. van Loef, William W. Moses, Senior Member, IEEE, Stephen E.
Derenzo, Fellow, IEEE, and Marvin J. Weber, CeBr3 Scintillators for Gamma-Ray Spectroscopy, 2004, IEEE.
[2]. G. Knoll, Radiation detection and measurement. 3rd Ed., New York: J. Wiley and Sons, 1999.
[3]. High resolution low background CeBr3 scintillators, Berkeley Nucleonics Corporation - 2955 Kerner Blvd - San Rafael CA 94901.
[4]. Characterization of new scintillators: SrI2:Eu,CeBr3, GYGAG:Ce and CLYC:Ce, A Giaz et al 2015 J. Phys.: Conf. Ser. 620
012003.
[5]. X-5 Monte Carlo Team. MCNP-A general Monte Carlo N-Particle Transport Code, version 5. Los Alamos National Lab, Vol 1-3,
2003.

ABSTRACT: We have studied theoretical models for ionosphere of Mars it was found that Mars is currently a major focus of solor system exploration. Recent mission have demonstrated that the martion environment constitutes a tightly coupled system in which the properties and behavior of one component of the system can influence even the most distant component.

Keywords: photoinization , solor zenith angle

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ABSTRACT: Glass of the system: (35-x) P2O5:10ZnO:10Li2O:10Al2O3:15Sb2O3:20B2O3: xTm2O3. (where x=1, 1.5,2 mol %) have been prepared by melt-quenching method. (where x=1,1.5 and 2 mol%) have been prepared by melt-quenching technique. The amorphous nature of the prepared glasssamples was confirmed by X-ray diffraction. Optical absorption and fluorescence spectra were recorded at roomtemperature for all glass samples.Judd-Ofeltintensity parameters Ωλ (λ=2, 4 and6) are evaluated from theintensities of various absorption bands of opticalabsorption spectra. Using these intensity parameters variousradiative properties like spontaneous emission probability, branching ratio, radiative life time and stimulatedemission cross–section of various emission lines have been evaluated....

Keywords: ZLAABPGlasses,Optical Properties, Judd-Ofelt Theory, Rare earth ions

[1]. Hatefi,Y.,Shahtahmasebi, N.,Moghimi,A.,Attaran,E.(2011). Ultraviolet to visiblefrequency-conversion properties of rare earths doped glass–ceramics, J. RareEarths 29, 484–488.
[2]. Swapna, K., Mahamuda,S.K., Srinivasa,Rao A., Jayasimhadri, M., Sasikala, T., Rama, M. L. (2013). Visible fluorescence characteristics of Dy3+doped zinc alumino bismuth borate glasses for optoelectronic devices. Ceramics International, 39: 8459.
[3]. Silversmith, A.J., Nguyen, N.T.T., Campbell, D.L., Boye,D.M., Ortiz, C.P., Hoffman, K.R. (2009).Fluorescence yield in rare-earth-doped sol – gel silicate glasses, J. Lumin. 129, 1501–1504.
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[5]. Kawamoto, Y.,Kanno, R.,Qiu, J. (1998).Up conversion luminescence of Er3+ in transparent SiO2—PbF2—ErF3 glass–ceramics, J. Mater. Sci. 33, 63–67.

ABSTRACT: We have proposed a three–body Interaction potential for the study of cohesive, harmonic and anharmonic elastic properties of ND4Cl– ND4Brmixed crystal. Present interaction potential shall consist of the long–range coulombs vdWdipole–dipole and dipole– quadrupole interactions and overlap repulsive potential of Born Mayer. This model potential has succeeded in predicting the Cohesive energy, and theSecond order elastic constants of the mixed deuterated ammonium halides.

[1]. H. C. Teh and B. N. Brock House, Phys. Rev. 83, 2733 (1971)
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ABSTRACT: Background: Multiple applications of X-rays in material science are imposing rising demand for effective and more user-friendly X-ray sensors. Commonly used solid-state sensors are rigid crystalline material having flat geometry. With increasing application demand for flexible and easy to shape sensor is developing fast. Keeping the demand in mind polymer-based X-ray sensors are developed with silver ion implantation. Materials and Methods: Silver ions accelerated at 80 KeV were implanted. Implanted polymer (methyl methacrylate, PMMA) sheets were subjected to Soft X-rays switching studies at room temperature.Nickel filtered X-rays from Cu target in the energy range 8.051KeV were used in the experimentation work. Results: Studies revealed that silver ion-implanted.......

Key Word: Atomic silver implantation, Detectors, Polymethylmethacrylate, Sensors, X-rays.

[1]. S. Bates; G. D. Zografi; D.Engers;K.Morris, Analysis of Amorphous and Nanocrystalline solids from Their X-Ray Diffraction
Pattern, 2006 Pharmaceutical Research 23(10) 2333-49
[2]. R. Das; M. E. Ali; S. B. A. Hamid. Current Applications of X-Ray Powder Diffraction-A Review. Rev.Adv.Mater. Sci. 38 (2014)
95-109
[3]. S. Atipamula; V. R. Vangala -X-Ray crystallography and its Role in Understanding the Physicochemical Properties of
Pharmaceutical Cocrystals -Journal of Indian Institute of Science 97.227-243 (2017)
[4]. S.R/Byrn; G. Zografi;X. Chen -X-Ray Crystallography and Crystal Packing Analysis DOI.org/10.1002/9781119264408 (2017)
[5]. Aaltonen, J.; Alleso, M.; Mirza, S.; Koradia, V.; Gordon, K. C.; Rantanen, J. Solid Form Screening—A Review. Eur. J. Pharm.
Biopharm. 2009, 71, 23–37.

ABSTRACT: Having intrigued the entire scientific community since its discovery by Edwin Hubble2, redshift, in its own, seems to be presenting a multitude of mysteries that lie enclosed within itself. Collecting the data of galaxies at different distances from the Earth, which indirectly allows us to travel back in time because given the astronomical scales of the universe light travels pathetically slow, it has been observed that most galaxies have actually sped up in moving away from us.For that matter, any observer on anywhere in the universe will observe that galaxies far away from the observational point will continue to move further away from that point. If we keep classical mechanics in mind, we would think that since galaxies exert the gravitational force on one another, this retardation would probably slow the motion of the galaxies to the point, where the velocity becomes zero and over a period of.......

Key Word: Dark Energy, gnaBgiB, Redshift, Blueshift, Hubble's law.

[1]. ANUAstro1x- Greatest unsolved mysteries of the universe (V3.5)
[2]. https://www.researchgate.net/publication/273784936_Hubble's_Law_and_the_expanding_universe
[3]. ANUAstro4x- Cosmology
[4]. https://www.researchgate.net/publication/265603209_Friedmann's_Equations_in_All_Dimensions_and_Chebyshev's_Theorem
[5]. http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=M+031&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES