In this era of transition from information age to knowledge society, the libraries have much greater challenges to face. The whole perception of library has now changed from collection of books to a single window knowledge bank. This paper discusses the definition and features of open source library management software, criteria of selection of best open source library management software, their, advantages and limitations. Open source library management software is a solution to reducing that cost. The paper describes in brief about the feature of some of the open source library management software like Greenstone Digital Library, DSpace, Koha, E-Prints, NewGenlib. PhpMyLibrary, OpenBiblio, Avanti, etc., which are useful for developing digital library and institutional repositories.The paper also highlight the initiatives taken in India to make use of open source library management software for developing their digital libraries.
Coronavirus born COVID-19 disease has spread its roots in the whole world. It is primarily spread by physical contact. As a preventive measure, proper crowd monitoring and management systems are required to be installed in public places to limit sudden outbreaks and impart improved healthcare. The number of new infections can be significantly reduced by adopting social distancing measures earlier. Motivated by this notion, a real-time crowd monitoring and management system for social distance classification is proposed in this research paper. In the proposed system, people are segregated from the background using the YOLO v4 object detection technique, and then the detected people are tracked by bounding boxes using the Deepsort technique. This system significantly helps in COVID-19 prevention by social distance detection and classification in public places using surveillance images and videos captured by the cameras installed in these places. The performance of this system has been assessed using mean average precision (mAP) and frames per second (FPS) metrics. It has also been evaluated by deploying it on Jetson Nano, a low-cost embedded system. The observed results show its suitability for real-time deployment in public places for COVID-19 prevention by social distance monitoring and classification.
ABSTRACT-The study was conducted to assess DNA damage in peripheral blood lymphocytes of cancer patients put on radiotherapy, medical workers occupationally exposed to ionizing radiations and control group of normal healthy individuals. The blood samples were collected from 20 cancer patients undergoing radiotherapy in Government Rajindra hospital, Patiala, 16 medical workers from Radiology and Radiotherapy department of Government Rajindra hospital, Mata Kaushalya hospital, T.B. hospital, Patiala and 10 normal healthy individuals from Punjabi University, Patiala, India. The DNA damage was evaluated by using alkaline COMET assay, the damage was assessed from two COMET parameters i.e. mean COMET tail length and frequency of cells showing migration. It was found that all the cancer patients undergoing radiotherapy as well as the medical workers, who were occupationally exposed to ionizing radiations for variable period of time showed DNA damage, whereas none of the control subjects showed any damage. The comparison of DNA damage between the cancer patients and medical workers revealed highly significant differences. On the basis of results obtained, it could be said that the exposure to acute high doses of radiations cause greater DNA damage in comparison to chronic low doses of radiations.
Metal and metalloid contamination in the waterbodies and its undesirable effect on the residing diatom communities is a problem of global concern. In the present study, the effect of metals (Fe and Zn) and metalloids (As and Hg) was examined (for 15 days) in the motility and protoplasmic content of different live diatom genera under laboratory conditions. Under Hg treatment, the % motile frustules in the six diatom genera lies between 2–5% after one day of exposure, while under As treatment value lies between 30–80%. In contrast, under Zn treatment % motile frustules in the six diatom genera lie between 60–80% after one day of exposure, while under Fe treatment value lies between 40–80%. However, after 15 days of exposure to Hg, the % motile frustules in the six diatom genera lies between 0–3%, while under As treatment value lies between 5–20%. In contrast, under Zn treatment % of motile frustules in the six diatom genera lies between 10–40% after one day of exposure, while under Fe treatment value lies between 10–20%. Based on the above results, the toxicity trends of metals and metalloids showed the following: Hg > As > Fe > Zn. Based on correlation ship analysis, it is found that % motile frustules in different diatom genera showed an inverse relationship with the % reduction in the protoplasmic content of the live cells i.e., the higher the value of the reduction in protoplasmic content lower will be the % motile frustules in the community. Based on obtained results, we can conclude that motility in live diatoms is the highly sensitive endpoint to assess the impact of metal and metalloid contamination in the water bodies. However, in comparison to metals, diatoms are more sensitive to the metalloid’s exposure, especially for Hg. Finally, we conclude that % motile diatom frustules in the community is a highly sensitive, quick, and easy-to-assess biomonitoring tool for assessing the metal and metalloid contamination in the water bodies.
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