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

ABSTRACT: Résumé Cette étude a pour objectif d'évaluer les vulnérabilitésde changement climatique àl'aéroport de Kinshasa Ndjiliet son impact potentiel sur la sécurité des vols. L'impact du changement climatiques et leurs conséquences sur la sécurité des vols dans nos aéroports doivent devenir une question préoccupante pour la Régie des Voies Aériennes (gestionnaire des aéroports de la RDC) et l'Autorité de l'Aviation Civile de la RD Congo (qui assure la supervision de la sécurité de l'aviation civile en RDC) ; notamment en matière d'évaluation des risques liés aux perturbations des paramètres climatiques. L'analyse des données climatiques à l'aéroport.......

[1]. Albert KABASELE YENGA YENGA, Modélisation du Fleuve Congo et Marées Océaniques de Muanda par Climatologie Spatiale,ouvrage édité par la Revue des Géosciences et innovations Spatiale de l'Institut Géographique du Congo,vol III,IGC-KINSHASA ,Janvier 2020
[2]. 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
[3]. Albert KABASELE YENGA YENGA ,Sylvain LUSHIKU,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.
[4]. GIEC (Groupe d'experts intergouvernemental sur l'évolution du climat). 2001. Resumé à l'intention des décideurs. Dans Bilan 2001 des changements climatiques: les elements scientifiques. Contribution du Groupe de travail I au troisième rapport d'évaluation du Groupe d'experts intergouvernemental sur l'évolution du climat. Cambridge, Royaume-Uni et New York, États-Unis, Cambridge University Press.
[5]. GIEC. 2007. Changements climatiques 2007: les éléments scientifiques. Résumé à l'intention des décideurs. Contribution du Groupe de travail I au quatrième rapport d'évaluation du Groupe d'experts intergouvernemental sur l'évolution du climat. Cambridge, Royaume-Uni et New York, États-Unis,.

ABSTRACT: Decision making for the excellence of the performance of a given solar technology operating under nominal conditions in given locations is of crucial importance. In the present work, an approach capable of making reliable predictions of the diffuse rate of solar radiation based on the Linke turbidity factor TL; the latter follows the model of Ineichen. However, the conversion process is technically and economically harmful. It is due to the loss of solar radiation caused by its absorption and diffusion in the atmosphere. Meteorological, atmospheric, and radiation data for the period from February 2004 to May 2020 are used. They are authorized for this work by resources derived from satellite data of NASA, for the benefit of the "Rabat" case study and other representative regions of Morocco for a.....

Key Word: Linke turbidity factor, Diffuse radiation ratio, Clearness index, Aerosol optical depth, atmospheric, solar radiation, Moroccan climate...

[1]. M. Gigliotti, G. Schmidt-Traub, and S. Bastianoni, "The sustainable development goals," in Encyclopedia of Ecology, 2018.
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ABSTRACT: The aim of present study was to determinate the levels of tannins in seedsofacacia nilotica using a variation of the concentration of different solvents. The method used for qualitative analysis with the tannins are formed by the intensity of the color is blackish green FeCl3compounds. While the principle of quantitative determination of tannins is acid standard curve at a wavelength of 300 nm. In the quantitative analysis of tannins used variations of different solvents (distilled water, ethanol99%and acetone%). Levels of tannins in the sample solution was calculated with Taninates Acid Equivalent (EAT). The results showed levels of tannins in seeds of acacia nilotica with distilled water, ethanol99% and acetone% whichis0.85mg/g , 0.76 mg/g, and0.99 mg/grespectively.

Key Word: Acacia seeds ,Determination , Tannins , Solvents.

[1]. Stepp JR and Moerman DE 2001; the importance of weeds in ethnopharmacology journal of ethnopharmacology75 : 19-23
[2]. Liu, Z., S.B. Carpenter, W.J. Bourgeois, Y. Yu, R.J.Constantin, M.J. Falcon, and J.C. Adam. 1998.Variation in the secondary metabolite camptothecininrelation to tissue age and season in Camptothecaacuminata. Tree Physiology 18: 265-270.
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[5]. Raskin, I., D.M. Ribnicky, S. Komamytsky, N. Ilic, A. Poulev, N. Borisjuk, A. Brinker, D.A. Moreno, C. Ripoll, N. Yakoby, J.M. O'Neal, T. Cornwell, I. Pastor, and B. Fridlender. 2002. Plants and human health in the twenty-first century. Trends in Biotechnology 20(12):522-531.

ABSTRACT: A formal structure of Electrogravitodynamics (EGD) is presented from wave equation development in both Electromagnetism (EM) and Gyrogravitation (GG) respect of the transverse component fields, as well as the poynting vector of each radiation, generically in a material environment and with non-zero generating sources. Once the complete structure of each radiation type, EM and GG, has been obtained, the interrelation between both two can be incorporated. This interrelation will be based on equations between irrotational components, the same within solenoidal components and also irrotational with solenoidal component relation equations regarding different radiations, incorporating the corresponding sources for the material environment and, later simplifying, for the vacuum........

Key Word: Electrogravitodynamics, Gyrogravitational Radiation, Gyrogravitational Poynting Vector, Wave Equation, Intrinsic Impedance, Specific Energy Intensity.

[1]. N. Torres López and F. Racedo Niebles, Teoría Electromagnética (Barranquilla, Colombia: Universidad del Atlántico, 2010), ISBN: 978-958-8123-82.
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[3]. J. Joglar Alcubilla, Electrogravitodynamics Principles (V2), https://www.researchgate.net/publication/339044382_ Electrogravitodynamics_Principles, 2020.
[4]. J. Joglar Alcubilla, Electrogravitodynamics Principles, IOSR Journal of Applied Physics, 12 (1), 2020, 45-57, doi: 10.9790/4861-1201024557.
[5]. A. Gamero Rojas, Ondas Electromagnéticas. Conceptos Básicos (Córdoba, España: Universidad de Córdoba, 2005).

ABSTRACT: In this study, gamma ray shielding properties such asmass attenuation coefficient (μm), half value layer (HVL), tenth value layer (TVL) and mean free path (MFP) for glasses composition xTiO2–20Na2B4O7–30PbO–20SiO2–(30-x) Bi2O3 (0≤x≤30 mol%), are prepared by melt quenching technique. The proposed materials have been estimated at three different gamma- ray energies (661.7 Kev from 137Cs, 1173 and 1332 Kev from 60Co)by using In-Situ Object Calibration Software (ISOCS), for serving as competitive candidates for radiation shielding. This method provides a user interface with a procedure to describe the measurement geometry, physical parameters, and computational algorithms to quantify radioactivity in samples.Therefore,in many situations, we found in this study ISOCS calculations are preferred because of its cost in which includes money, effort, and time is lower than the experimental method. Also, it is found that ISOCS calculations are a very good method for the calculation of the previous gamma ray shielding properties at different photon energies.

Key Word: Titanite oxide, (ISCOS), Heavy metal oxide glasses, γ-ray attenuation, Massattenuationcoefficient, Thickness.

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ABSTRACT: Gravity anomalies in parts of the middle Benue trough, Nigeria, were investigated through the interpretation of aerogravity data with the objectives to determine the thickness of the sedimentary basin, establish the basement topography and density contrasts which will give information about variation of geological structures. Two sheets of digital airborne gravity data were used for the study. Power Spectrum and Source parameter imaging (SPI) techniques were employed in the quantitative interpretation. The Bouguer anomaly of the study area varied from -66.0 mGal to 28.4 mGal while the residual Bouguer anomaly of the study area varies from -30.5 mGal to 27.7 mGal. The result from the Power Spectrum analysis showed that the maximum estimated basement depth obtained is 5.6 km. Oasis Montaj software was employed using the first vertical derivatives and horizontal gradient in computing the SPI depth of the gravity data.........

Key Word: Aerogravity, density contrast, Bouguer anomaly, Power Spectrum, Source Parameter Imaging.

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