Impact of E-Learning on Indian Students during Pandemic: A Conceptual Approach

For the enhancement of distant education and learning through web the practice of e-learning has initiated in late 1990s Because of the significant growth of information and technology the adoption of e-learning became famous globally in late 2000s By the mid of 2010s utilization of electronic devices computers laptops mobile phones and tablets which supports internet connectivity were prominently used by Indian educational institutions to facilitate e-learning process to educate the students through online platforms In the later part of 2010 Indian organizations in collaboration with foreign companies developed their own web-based software and application in order to persuade the practice of e-learning for the students With reference to traditional learning e-learning was adopted in a few numbers Since the outbreak of pandemic issue Covid-19 lockdown and pandemic protocols leads to closure of schools and colleges across the country As a result educating the students through online e-learning served as the full time replacement for traditional learning Although educating students through e-learning made an appropriate replacement for traditional learning students across many parts of India subjected to confront certain issues as well as merits while learning through online On consideration with perception of students the article is aimed at investigating the positive and negative attributes of e-learning among Indian students based on the existing literary work

Solar Power Renaissance

The U.S. is witnessing an unprecedented growth in renewables, particularly wind and solar energy, thanks to a number of enablers including government subsidies, government mandates to utilities, impressive technological growth, price collapse in silicon production costs, and the geo-political uncertainty around fossil fuel production. While wind energy has more favorable market conditions due to its more relatively mature state and inherent advantages such as all-day production, the solar energy production is becoming more competitive primarily due to the rapidly declining supply chain costs and scale economy in solar panel production. In this paper, our focus is on the underlying factors for the supply chain cost decrease, which has led to a more attractive profitability potential in the industry, despite the price pressure on the revenue. However, we find no evidence that the supply chain cost gains can continue to dramatically lower the cost of production much further. This means that manufacturers need to find new ways to improve the manufacturing efficiencies subject to the theoretical limits on energy conversion efficiencies or move up the technology maturity curve to the next generation solar technology. If they stay too long close to such theoretical conversion efficiency this will be an evening twilight, and yet if they can switch at the right time to ride the technology curve, it will be a morning twilight. We begin with the overall market growth drivers for solar panels in Section 1 and their impact on the solar panels manufacturers. In section 2, we devote our attention to the efficiency drivers for various solar technologies. These include both the conventional ones in place today as well as disruptive technologies on the horizon and potential drivers that would make them more affordable. We conclude this paper in Section 3 with areas to explore as next steps

A new RP-HPLC method for the determination of Tenofovir Disoproxil Fumarate in pure form and pharmaceutical formulation

The present study aimed to develop the new method for the estimation and validation of tenofovir in pure form and in pharmaceutical dosage form by RP-HPLC. The chromatogram of tenofovir was developed through column (Hyper ODS2 C18), UV detection at 260 nm at a flow rate of 1.2 ml/min with Methanol and Phosphate buffer (90:10) as mobile phase. The method was validated by various validation parameters such as accuracy, precision, linearity, specificity as per the ICH guidelines. A linearity range and retention time of Tenofovir were found to be 20-110 µg/ml and 2.1 min respectively. The % RSD of the Tenofovir was found to be 0.7. The % recovery was obtained as 99.7% for standard and 96.32% for tablets. This method was simple, accurate, precise and sensitive. Hence, the developed method was employed for the routine analysis of Tenofovir in the pharmaceutical dosage form

Simultaneous determination of levocetrizine and phenylpropanolamine hydrocholride by RP-HPLC

The aim of the present study was to develop the simple, selective, rapid, precise and economical reverse phase-high performance liquid chromatography (RP-HPLC) method for the simultaneous estimation of levocetirizine and phenylpropanolamine HCl in solid dosage forms. The method was carried out on a Phenomenex Luna C18 (25 cm × 4.6 mm i.d., 5 μ) column with a mobile phase consisting of acetonitrile: 0.5% triethylamine (70:30 v/v, pH 3.0) at a flow rate of 1.2 mL/min. Detection was carried out at 220 nm. The retention time (RT) 1.8 min and 2.6 min for phenylpropanolamine hydrocholride and levocetrizine respectively. The % recovery of standard phenylpropanolamine hydrocholride and levocetrizine was found to be 98.17 to 103.56 and 98.893 to 10.422 respectively. The % recovery of sample phenylpropanolamine hydrocholride and levocetrizine was found to be 101.30 and 100.63 respectively. The validation of the proposed method was also carried out. The proposed method can be used for the estimation of these drugs in combined dosage forms

Time-gated optical imaging through turbid media using stimulated Raman scattering: studies on image contrast

In this paper, we report the development of experimental set-up for time-gated optical imaging through turbid media using stimulated Raman scattering. Our studies on the contrast of time-gated images show that for a given optical thickness, the image contrast is better for sample with lower scattering coefficient and higher physical thickness, and that the contrast improves with decreasing value of anisotropy parameters of the scatterers. These results are consistent with time-resolved Monte Carlo simulations

Implementation of a voltage multiplier integrated HID ballast circuit with dimming control for automotive application

Author name used in this publication: K. W. E. ChengAuthor name used in this publication: D. H. WangPower Electronics Research Centre, Department of Electrical Engineering2009-2010 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Non-invasive ophthalmic imaging of adult zebrafish eye using optical coherence tomography

We describe the development of a single-mode fibre based optical coherence tomography set-up and its use for non-invasive optical imaging of adult zebrafish (Danio rerio) eyes. The free-space axial and lateral resolutions of the set-up were estimated to be ~ 11 and 17 μm respectively. Images of whole eye, cornea and retina acquired with the set-up have been used to estimate several ocular parameters, viz. corneal thickness, mean retinal thickness and effective refractive index of the crystalline lens

A small angle neutron scattering study of the vortex matter in La{2-x}Sr{x}CuO{4} (x=0.17)

The magnetic phase diagram of slightly overdoped La{2-x}Sr{x}CuO{4} (x=0.17) is characterised by a field-induced hexagonal to square transition of the vortex lattice at low fields (~0.4 Tesla) [R. Gilardi et al., Phys. Rev. Lett. 88, 217003 (2002)]. Here we report on a small angle neutron scattering study of the vortex lattice at higher fields, that reveals no further change of the coordination of the square vortex lattice up to 10.5 Tesla applied perpendicular to the CuO2 planes. Moreover, it is found that the diffraction signal disappears at temperatures well below Tc, due to the melting of the vortex lattice.Comment: 3 pages, 2 figures. Presented at the New3SC-4 meeting, San Diego, Jan. 16-21 2003; to be published in Int. J. Mod. Phys.

General discussion on dimming control method used for discharge lamp

Author name used in this publication: P. DongAuthor name used in this publication: K. W. E. ChengAuthor name used in this publication: S. L. HoAuthor name used in this publication: D. H. WangAuthor name used in this publication: K. DingPower Electronics Research CentreRefereed conference paper2006-2007 > Academic research: refereed > Refereed conference paperVersion of RecordPublishe