http://nopr.niscair.res.in/handle/123456789/1 Search the Channel search http://nopr.niscair.res.in/simple-search http://nopr.niscair.res.in/handle/123456789/18654 Title: Vermiculite cement tiles for thermal insulation <br/> <br/>Authors: Lakhani, Rajni; Agarwal, S P; Ghai, Sapna; Saxena, R K <br/> <br/>Abstract: In the present study, thermal insulated tiles have been prepared by using exfoliated vermiculite as a filler material because of its low bulk density, high refractoriness, low thermal conductivity and adequate chemical inertness. The ordinary Portland cement of 43 grade was used as a binding material for vermiculite. Various mixes were prepared using different percentage of vermiculite and water cement ratio. In order to obtain desired consistency, polymer admixtures such as SBR latex and superplasticizer (1 wt% of cement) was added in the mixes at 0.15 polymer cement ratio. Based on the test results, an optimum formulation was worked out for the vermiculite cement tiles on the basis of wettability of vermiculite surface and its proportion, vermiculite cement ratio and polymer-cement ratio. The developed vermiculite cement tiles exhibited low water absorption, better strength properties and low thermal conductivity compared with the conventional clay tiles used for thermal insulation purpose. <br/> <br/>Page(s): 246-250 Wed, 28 Nov 2012 22:58:59 GMT http://nopr.niscair.res.in/handle/123456789/18653 Title: Evaluation of precompressed grannules prepared for chewable tablets of essential oils as alternative dosage forms <br/> <br/>Authors: Sachan, Nikhil K; Gangwar, Sudhir S; Sachan, Anupam K <br/> <br/>Abstract: Drug delivery systems play an important role in therapeutic performance of medicaments and their commercial success. Further these affect the improvement of medication compliance too. Hence, the comprised research work presents pharmacotechnical investigation of precompressed granules prepared for chewable tablets of peppermint and caraway oils as alternative dosage forms. In India, the two oils are used widely in different forms by common people for the relief of dyspepsia, gastric spasm and carminative purpose in the form of aromatic waters, soft gelatin capsules or as elixirs, moreover the people are taking several products as breath freshener. This approach of formulating these essential oils as chewable tablets enables the patient friendly administration of these oils for therapeutic purposes and provides simultaneously breath freshness to consumer in view of the urban lifestyle increasingly demanding the use of chewables as refreshing agents. Granules for tablet compression were formulated using hydroxylpropyl cellulose, dicalcium phosphate, mannitol &amp; ProSolve SMCC, and were evaluated for pharmacotechnical parameters and drug content. <br/> <br/>Page(s): 239-245 Wed, 28 Nov 2012 22:58:59 GMT http://nopr.niscair.res.in/handle/123456789/18652 Title: Simple titrimetric method for antimalarial drugs with pyridinium fluorochromate (PFC) reagent <br/> <br/>Authors: Shukla, I C; Yadav, O P; Kumar, Sanjay; Kumar, Virendra <br/> <br/>Abstract: In the present paper we have reported a simple and convenient titrimetric method for determination of antimalarial drugs e.g. chloroquine phosphate, amodiaquine hydrochloride, mefloquine hydrochloride, primaquine phosphate and quinine sulphate in pure form and in their pharmaceutical preparations such as larigo (tab), resochin (tab), camoquin (tab), flavoquine (tab), mefloquin (tab), meflotas (tab), maliride (tab), rnalquine (tab), quinersal (tab) and rezqine (tab) with pyridinium fluorochromate (PFC) reagent. It is a versatile oxidizing reagent of chromium (VI) and is being widely used as an oxidant for several classes of organic compounds. During estimation it was noted that the exipients present in pharmaceutical preparations do not interfere. The value of percentage error, standard deviation (SO) and coefficient of variation (CV) prove the method to be precise and reproducible to establish authenticity of the method, recovery experiments were also carried out by standard drug addition method. <br/> <br/>Page(s): 233-238 Wed, 28 Nov 2012 22:58:59 GMT http://nopr.niscair.res.in/handle/123456789/18651 Title: Safe laboratory practices <br/> <br/>Authors: Choudhary, Neha; Sharma, Niraj; Dhayni, Rajni; Singh, Anil <br/> <br/>Abstract: Non compliance of the safety rules lead to accidental injury. The effect of laboratory practices on health, safety and environment is an important issue. Accidents in laboratory occur mostly due to not following safety guidelines, by improper storage of chemicals and insufficient knowledge about the use of dangerous chemicals. Various studies in India have shown that safety rules are followed only in few laboratories in India. Due to improper implementation of safety guidelines these laboratories are always prone to accidents and environmental pollution. The present paper focuses on different hazards, management of hazards and importance of safety in laboratory. <br/> <br/>Page(s): 225-232 Wed, 28 Nov 2012 22:58:59 GMT