Jaypee Institute of Information Technology

About: Jaypee Institute of Information Technology is a education organization based out in Noida, Uttar Pradesh, India. It is known for research contribution in the topics: Computer science & Cluster analysis. The organization has 2136 authors who have published 3435 publications receiving 31458 citations. The organization is also known as: JIIT Noida.

Effect of thermal processing conditions on the structure and dielectric properties of PVDF films

Abstract: The effect of annealing and quenching tempera- tures on the crystallinity, β phase fraction and dielectric be- havior of poly (vinylidene fluoride) (PVDF) have been stud- ied. The crystallinity and β phase fraction of these films were evaluated using X-ray diffraction and FTIR techniques for different annealing and quenching temperatures. It is seen that the thermal processing conditions play a crucial role in deter- mining the dominant phase in PVDF. The β phase PVDF is the most desired phase for device applications such as sensors and actuators. Hence, the thermal processing conditions are optimized for obtaining β rich PVDF films. The β rich phase ofPVDFisobtainedfor filmswhichareannealedat80°Cand quenchedat 20 °C. The as-synthesized films for the optimized processing conditions was studied for their dielectric behavior and was found to exhibit dielectric constant as high as ~60.

Recent patents on anti-telomerase cancer therapy.

Abstract: Telomerase, a specialised RNA-directed DNA polymerase extends and stabilises the telomeres at the ends of the eukaryotic chromosomes. The progressive loss of telomeres results in limited number of cell divisions and has been linked to the mechanism of human cellular ageing. Tumour cells marked by indefinite proliferation have stable telomere length maintained by telomerase. The differential expression of the telomerase enzyme in normal and cancer cells have led to the evolution of tumour specific anti-telomerase approaches which inhibit the telomerase enzyme activity so as to destabilise and shorten the telomeres leading to senescence in cancer cells. In the current review, we have selected nine tumour specific anti-telomerase approaches based on their mechanism of action or the target components of the human telomerase enzyme: Antisense-oligonucleotides, hammerhead ribozymes, dominant negative hTERT, reverse-transcriptase inhibitors, immunotherapy, G-quadruplex stabilisers, gene therapy, small molecule inhibitors and RNA interference. Recent research developments for each of the anti-telomerase approaches with the detailed analysis of specific granted patents from the perspective of different claims and downstream applications have been provided. A comprehensive list of patents for the different anti-telomerase approaches which includes information regarding the authors and institutional ownership along with the year of issue of the patent has also been provided.

Social entrepreneurship: the need, relevance, facets and constraints

Abstract: Social entrepreneurship is gradually becoming a crucial element in the worldwide discussion on volunteerism and civic commitment. It interleaves the passion of a common cause with industrial ethics and is notable and different from the present other types of entrepreneurship models due to its quest for mission associated influence. The previous few years have noticed a striking and surprising progress in the field of social entrepreneurship and has amplified attention ranging throughout all the diverse sectors. The critical difference between social and traditional entrepreneurship can be seen in the founding mission of the venture and the market impressions. Social entrepreneurs emphasize on ways to relieve or eradicate societal pressures and produce progressive externalities or public properties. This study focuses mainly on the meaning of social entrepreneurship to different genres and where does it stand in respect to other forms of entrepreneurship in today’s times.

Structural, Optical and Multiferroic Properties of BiFeO3 Nanoparticles Synthesized by Soft Chemical Route

Abstract: BiFeO3 nanoparticles were prepared via a soft chemical method using citric acid and tartaric acid routes followed by calcination at low temperature. Structural characterization showed remarkably different conditions for pure phase formation from both routes. The tartaric acid route was effective in obtaining pure phase BiFeO3 nanoparticles while citric acid route required leaching in dilute nitric acid to remove impurity phases. Further optical, magnetic, and dielectric characterizations of pure phase BiFeO3 nanoparticles obtained by tartaric acid route were done. X-ray diffraction and Raman spectroscopy confirmed the distorted rhombohedral structure of BiFeO3 nanoparticles. The average crystallite size of BiFeO3 nanoparticles was found to vary in the range 30–50 nm. Fourier Transformed Infrared spectra of BiFeO3 samples calcined at different temperatures were studied in order to analyze various bond formations in the samples. UV-Visible diffuse absorption showed that BFO nanoparticles strongly absorb visible light in the wavelength region of 400–580 nm with absorption cut-off wavelength of 571 nm. The band gap of BiFeO3 nanoparticles was found to be 2.17 eV as calculated from absorption coefficient spectra. Magnetic measurement showed saturated hysteresis loop indicating ferromagnetic behavior of BiFeO3 nanoparticles at room temperature. Temperature dependent dielectric constant showed anomaly well below the antiferromagnetic Neel temperature indicating decrease in antiferromagnetic Neel temperature of BiFeO3 nanoparticles.