Quantum SI: The New System of Units

This article gives an overview of the new SI and a few details as to how its setting up was achieved. Those interested in the story of how the kilogram was fixed by tying it to the Planck constant can go straight to section five. Otherwise, apart from the introduction given as section one which also presents excerpts from the relevant official documents on key aspects of the new system, section two gives a brief timeline of the history of the decimal metric system, section three gives a few details of the procedural steps -- from the setting up of a standard of measurement to its percolation to the public, taking the time standard as an example and, section four attempts to give a flavour of the actual process of the setting up of a standard.Comment: 16 pages, 5 figures, written for Resonance - Journal of Science Education, published by the Indian Academy of Science

PHARMACOGNOSTICAL AND PHYTOCHEMICAL EVALUATION OF TENDER AND MATURE LEAVES OF MANGIFERA INDICA LINN.

Amrapallava, which is identified as tender leaves of mango tree (Mangifera indica Linn) are used for various ailments in Ayurvedic system of medicine since ancient time. But there is no scientific data is available on different maturity levels of leaves for therapeutic use. Hence the present study compared the Pharmacognostical and Phytochemical standards of the leaves of Mangifera indica Linn at different maturity. Macroscopic, microscopic, physicochemical, phytochemical, TLC, HPTLC and AAS tests were done as per the standard procedure described in Ayurveda Pharmacopoeia of India. Among the macroscopic characteristics, the colour of tender leaves of Mangifera indica Linn is pinkish, amber or pale green colour while that of mature leaves having dark green colour. Texture of tender and mature leaves of Mangifera indica Linn was thin leathery and coriacious respectively. In transverse section the resin canal was more in mature leaves of mango tree. Tetrahedral prismatic crystals are present in tender leaves which is absent in mature leaves. The percentage of water soluble extractive and fibre content was comparatively more in mature leaves. Steroids were absent in both tender and mature leaves. Percentage of Phenolic content was more in mature leaves, and there is no other marked variation in all other parameters

Analysis of Groyne Placement on Minimising River Bank Erosion

AbstractBank erosion is the wearing away of the banks of a stream or river. Impacts of river bank erosion are multifarious: social, economic, health, education and sometimes political. Groynes are structures constructed in rivers to protect the shore. Groynes are generally made of wood, concrete, or rock piles etc. In the present study coir geotextiles in the form of cocologs are used as the groynes to make the groyne more ecofriendly. Study mainly concentrates on analysing the effects of placing groynes at different angles from 450 to 1350 and to find the most effective arrangement for minimising the erosion. Results indicate that cocolog-groynes are effective in minimizing the erosion and protecting the bank. Maximum protection is observed for groyne angle of 1350

CRITICAL REVIEW ON AGASTHYAHAREETAKI AVALEHA WITH SPECIAL REFERENCE TO SWASAHARA KARMA

Respiratory disorders are one of the leading causes of morbidity worldwide. In Ayurvedic classics many poly herbal preparations are mentioned for curing respiratory disorders. Agasthyahareetaki avaleha is one such formulation mentioned in classical text books specially indicated for curing Swasa, Kasa, Vishamajvara etc. A detailed literature survey has been conducted to explore the probable mode of action of Agasthyahareetaki Avaleha in Swasa Roga. Most of the ingredients are having anti asthmatic, anti-inflammatory, immune modulator and antimicrobial activities may works on respiratory pathology. Apart from this Katu, Tikta Rasa, Ruksa, Lagu Guna and Kaphavata hara, Swasa- Kasa- Sopha Hara property of ingredients will hamper the pathology of Swasaroga