Author:Kathree, U; Nel, Willem AJ; Van Rensburg, VJ; Mishra, AKDate:Oct 2015In the field of radar, High Range Resolution (HRR) profiles are often used to improve target tracking accuracy in range and to allow the radar system to produce an image of an object using techniques such as inverse synthetic aperture radar ...Read more
Author:Roberts, DE; Du Plessis, A; Steyn, J; Botha, LR; Pityana, Sisa L; Berger, LRDate:Jul 2012Laser Induced Breakdown Spectroscopy (LIBS) was used to study the spectra from fossils and surrounding rock recovered from the Cradle of Mankind site at Malapa, South Africa. The objective was to find a suitable spectral line(s), specific to ...Read more
Author:Belyi, VN; Kazak, NS; Khilo, NA; Forbes, A; Ropot, PIDate:Aug 2009The spectrum of spatial frequencies (SFS) of Bessel beams properties emerging at their spatial localization is investigated. The case, when limiting aperture has a circular shape and a center at any distance from the optical axis, was studied. ...Read more
Author:Lekoadi, Paul M; Maledi, N; Tlotleng, Monnamme; Masina, Bathusile NDate:Feb 2020The investigation of microstructural and hardness properties of high-speed selective laser melted (SLM) produced Ti6Al4V coupons after various heat treatments. Heat treatment was performed in order to homogenize and improve the microstructure ...Read more
Author:Lekoadi, Paul M; Maledi, N; Tlotleng, Monnamme; Masina, Bathusile NDate:Nov 2018This study presents an investigation of the effect of different heat treatments on the microstructure of Ti6Al4V fabricated components produced by high speed selective laser melting. 10 mm x 10 mm x 10 mm cubes were heat treated in an inert ...Read more
Author:Copeman, JH; Von Wolff, WTEDate:1965Because of the effect of inorganic impurities on the utilization of coal, it was decided to carry out a survey on the minerals present in production samples from different mines.Read more
Author:Vallabh, Bhavya; Skews, BWDate:Sep 2017The existing nozzle contour profiles of the CSIR’s supersonic or High Speed Wind Tunnel (HSWT) produce weak waves in the test section region, which effectively degrades the air flow quality in the test section. This paper describes a calculation ...Read more
Author:Sprung, D; Sucher, E; Ramkilowan, A; Griffith, DJDate:Sep 2014Optical turbulence represented by the structure function parameter of the refractive index C(subn)(sup2) is a relevant parameter for the performance of electro-optical systems and characterization of the atmospheric influence on imaging. It ...Read more
Author:Gayathri, S; Ghosh, OSN; Sathishkumar, S; Sudhakara, S; Jayaramudu, J; Ray, SS; Viswanath, AKDate:Dec 2015In this report we have demonstrated the synthesis of silver doped and pure ZnO nanoparticles using facile chemical precipitation method. The crystal structure, optical and magnetic properties of the synthesized nanocrystals were determined ...Read more
Author:Rossouw, M; Theron, ADate:2012Climate action has become a priority on the international agenda but the challenge facing the global community is both complex and considerable. Climate change poses a serious threat to human development and prosperity with potentially ...Read more
Author:Matogoro, J; Mfupe, Luzango P; Mvungi, N; Anatory, JDate:Oct 2021A study was conducted to investigate radio propagation characteristics in ultra-high frequency (UHF) bands over straight and circular paths in central Tanzania. The received signal power values (in dBm) were collected using a spectrum analyzer ...Read more
Author:Gbadeyan, OJ; Adali, BJ; Bright, G; Sithole, Bishop BDate:Jun 2021The current study investigates the reinforcement properties of novel nano-calcium carbonate (nano-CaCO(sub3)) synthesized from Achatina fulica snail shell. The shell was wet-milled to nanoparticle sizes using mechanochemical procedures. Epoxy ...Read more
Author:La Grange, CCDate:1965The purpose of this investigation was in the firs instance to determine what yields of low ash products could be expected from the duffs, such products to be suitable.Read more
Author:Machaka, P; Bagula, ADate:2015The paper seeks to investigate the use of scalable machine learning techniques to address anomaly detection problem in a large Wi-Fi network. This was in the efforts of achieving a highly scalable preemptive monitoring tool for wireless ...Read more
Author:Gummow, RJ; Thackeray, MMDate:May 1994Cathode materials that have been synthesized by reduction of lithium-manganese- Cathode materials that have been synthesized by reduction of lithium-manganese-oxide and manganese-oxide precursors with hydrogen at 300 to 350-degrees-C, and ...Read more
Author:Oluwaleye, Oluwaleye; Madhuku, M; Mwakikunga, Bonex W; Moloi, SJDate:Apr 2019Indium Tin Oxide (ITO) thin films have been used extensively in many applications, such as solar cells. In particular, ITO has been the material of choice in flat panel displays as one of its electrodes due to its low resistivity, high ...Read more
Author:Cordeiro, N; Gouveia, C; Jacob John, MayaDate:Jan 2011Inverse gas chromatography (IGC) is a suitable method to determine surface energy of natural fibres when compared to wetting techniques. In the present study, the surface properties of raw and modified lignocellulosic fibres have been ...Read more