A novel lead free nano fibers of Cesium Titanium Bromide (CsTiBr3) perovskite is synthesized on commercial glass substrate by a two stage deposition method for the first time. Cesium Bromide thin film prepared by vacuum evaporation by resistive heating is the substrate for deposition of Titanium Bromide (TiBr4) vapor by an in-house deposition arrangement. The duration of deposition of TiBr4 vapor on CsBr thin film plays a key role on the structural, compositional and morphological properties of CsTiBr3. The mechanism behind the formation of nano fibers of CsTiBr3 from polygonal grains of CsBr is discussed in detail. The grain boundary grooving of CsBr polygonal grains influences the evolution and dimension of CsTiBr3 nano fibers. The nano fiber structure and lead free nature makes this novel perovskite a promising candidate for sensors, nanolasers and for future nanoelectronics.

Renewable energy technologies are clean sources of energy that have a much lower environmental impact than conventional energy technologies. In the field of renewable energy after boosting operation, for converting DC to AC voltage for feeding load, inverters plays vital role Due to many limitations faced by Conventional voltage source inverter,Z-SourceInverter became popular by preventing the limitations due to its by providing LC impedance network connected between source and load Thereby this inverter can be used for Buck/Boost operation. But presence of LC impedance made the system bulky and not suitable for low power application. This causes the introduction of Switched Boost inverter, which exhibits similar advantages of ZSI with less number of passive elements. This paper proposes closed loop control of switched boost inverter for PV applications with less cost and reduced size. The closed loop control enhances the efficiency of SBI and it also shows fast response to the voltage given as reference. SBI has unique features of buck/boost operation along with AC/DC inversion. This feature is embedded in this topology due to the presence of impedance network in the input side of SBI.

It’s been nearly 100 y of effort to study the organization and role of the blood brain-barrier and still, we strive to find better techniques to overcome this barrier to deliver the drugs to the brain effectively with reduced systemic side effects. The advances in nanotechnology have given newer horizons in achieving this goal since the nano-scaled systems can modify an existing drug to have a high degree of sensitivity to the physiological conditions and specificity to reach the target organ. Among the various nanocarriers, dendrimers owing to their unique physical and chemical characteristics, represent a potential therapeutic tool in biomedical and pharmaceutical science. Dendrimers, an established polymeric nanocarrier system of the time, can deliver both drugs and genetic material and are being extensively studied to target the brain. The surface modification of dendrimers can reduce their innate toxicity problems and increase the therapeutic efficacy of brain disorders. This review article is an attempt to update on the potential of dendrimers explored in the past five years as a drug delivery avenue that can be considered as a promising solution in the management of a wide range of disorders affecting the central nervous system, including neoplastic, degenerative, and ischemic conditions. The following search criteria were used to expand the review article with the keywords dendrimers, novel drug delivery, nanoparticles, site-specific drug delivery etc.

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This paper presents the measured performance of an experimental PV water pumping system of 1200W installed in the north-east of Libya. Both the monthly and hourly measured data of the system performance are presented and analyzed, and the over-all system efficiency has been calculated as monthly and daily averages. The monthly average output of the system has been estimated and compared with measured data. The economic analysis of the system has been carried out and the specific water discharge cost {SDC} has been determined. The obtained SDC was very competitive with the published SDC of the PV water pumping projects in some countries. The obtained results have demonstrated the technical and economic feasibility of using the PV systems for water pumping especially in the remote areas of high potential of solar insulation