http://localhost:8080/xmlui/handle/123456789/7723 Sun, 12 Apr 2026 22:46:00 GMT 2026-04-12T22:46:00Z http://localhost:8080/xmlui/handle/123456789/8168 Synthesis and Photoluminescence Studies of Rare Earth Doped [1.5%] CaO Sharma, Jitesh Chandrapal; Suresh, K.; Gandhi, Y. H.; Murthy, K. V. R. Several phosphors synthesized by solid state reaction method of host material CaO with five different rare earth ions as dopants. Solid state method is a very useful method to synthesize oxide phosphors, here the authors synthesized five different rare earth doped CaO with precursors of host calcium oxide and five different rare earth oxide were doped at (1.5mol%) concentration. The RE3+ were taken in the form of (1) Samarium oxide Sm2O3 (2) Europium oxide Eu2O3 (3) Gadolinium oxide Gd2O3 (4) Terbium oxide Tb2O3 (5) Dysprosium oxide Dy2O3 as raw materials. Study of photo luminescence spectra, XRD, SEM and FTIR were measured on the prepared samples. From the XRD pattern it is found that most of the phosphor is in single phase. From the peaks calculated average crystallite size is 46.5 nm using Scherer formula. From the PL study, the CaO: Eu phosphor shows, predominant red emission, CaO: Tb phosphor shows predominant green emission at 545nm, therefore these two phosphors may be a good candidates for red and green emission when used in near UV solid state light emitting diode (275nm excitation). The other CaO: Sm3+, CaO: Dy3+ and CaO: Gd3+ phosphors are excited with 275nm shows common emission at 470nm (blue) is nearly the same with same intensity. These phosphors may be a good blue emitting phosphors for 275nm excitable from solid state Light Emitting Diode(LED). Tue, 01 Jan 2019 00:00:00 GMT http://localhost:8080/xmlui/handle/123456789/8168 2019-01-01T00:00:00Z http://localhost:8080/xmlui/handle/123456789/7960 Screening Of Phytochemical Compounds Present In Ethano Medicinal Plant From Acanthaceae Family: A Short Review Bhattacharya, Indrani; Nandasana, Raj; Vora, Shreya The present study is describes the phytochemical test and antibacterial activity of andrographis paniculata. Andographis paniculata is commonly known as “Kalmegh” and “King of better”. Andographis paniculata is belongs to the family of Acanthaceae. This plant is used in a treatment for example common cold, diarrhoea, fever, etc. The phytochemical testing is used to show a protein, sugars, gum, flavonoids, quinones, alkaloids, tannins, and triterpenoids. In the present study of the aqueous and methanol extracts of the leaves of andographis paniculata were studied for their antibacterial activity by agar well diffusion method against gram positive and gram negative bacteria as well as against fungi. The use of plant extract with known antimicrobial properties can be of significance for treatment. Sat, 01 Jun 2019 00:00:00 GMT http://localhost:8080/xmlui/handle/123456789/7960 2019-06-01T00:00:00Z http://localhost:8080/xmlui/handle/123456789/7875 In vitro hairy root culture: a promising approach to investigate molecular mechanism of phytoremediation Hirapure, Pradip; Upadhye, Vijay J.; Shanaware, Arti Environmental pollution caused by natural processes or anthropogenic activities is a major global problem. Although several physical and chemical strategies have been used for environmental remediation, these methods are expensive and associated with certain limitations. Phytoremediation is an alternative, biological approach where different plant species are used for the removal of pollutants from the environment or for converting toxic molecules to non toxic forms. Both organic and inorganiccompounds of various types are the targets of phytoremediation. Recently Hairy root cultures have been considered as asuperior model system to investigate molecular mechanism of phytoremediation processes as rhizofiltration, phytostabilization and phytoextraction of organic and inorganic pollutants because of their biochemical and genetic stability and easy maintenance. This review focuses on the phytoremediation process, induction and establishment of in vitro hairy rootculture, advantages of hairy root culture, future application of hairy root culture system to understand the molecular mechanism of phytoremediation Tue, 01 Jan 2019 00:00:00 GMT http://localhost:8080/xmlui/handle/123456789/7875 2019-01-01T00:00:00Z http://localhost:8080/xmlui/handle/123456789/7835 The scenario of Pharmacovigilance in India for Herbal Medicines. Panchal, Richa V.; Giri, Sucheta Ghorai; Timba, Pinali P. From centuries the use of herbal products for prevention and treatment of various health issues has been practicing . Nowadays there is an increasing demand of herbal medicines as well as herbal products worldwide with the belief that herbal medicines are always safe and carry no risks as they are from natural sources. In this era of development , the Drug Department is focused on finding new active compounds or combinations , which make herbal medicines a harmless and cheaper alternative to synthetic drugs . On the other hand , there are some issues regarding to medicinal plants and their negative impacts . In recent years monitoring of the safety aspects of herbal medicines has become one of the primary tasks due to excessive usage . Like synthetic drugs , herbal medicines are not free of risks . Many studies showed that some herbal product used in medication may have carcinogenic , hepatotoxic , cardiotoxics well as other severe effects due to inclusion of some fungal , bee products , minerals , shells , animals . Safety aspects should include in vivo and in vitro assays , long term carcinogenicity tests , reproductive as well as developmental toxicity , effects on drug metabolizing enzymes . Thus the current study illustrates the development and the present scenario of the pharmacovigilance in India. Fri, 01 Mar 2019 00:00:00 GMT http://localhost:8080/xmlui/handle/123456789/7835 2019-03-01T00:00:00Z