R. N. Chopra

Bio: R. N. Chopra is an academic researcher from Calcutta School of Tropical Medicine. The author has contributed to research in topics: Malaria & Holarrhena. The author has an hindex of 8, co-authored 61 publications receiving 6823 citations.

Induced Malaria with Heavy Malignant Tertian Infection.

Abstract: Ram Lal, a Hindu male, 45 years old, was admitted into the Carmichael Hospital for Tropical Diseases on 27th February, 1941, for malaria therapy. His lower extremities showed signs of great weakness. Examination of blood showed a moderately positive Wassermann reaction. Physical examination revealed the following findings :?Tongue coated; lungs moist and dry sounds all over both lungs; liver slightly enlarged; spleen not palpable; heart nothing abnormal noted; bowels loaded; lower extremities, signs of great weakness in both. Knee jerk absent on the right and somewhat brisk

A Preliminary Note on the Pharmacological Action of Some Organic Antimony Derivatives

Abstract: to the preparation of triaryl-stibiues. Later, Grignard's reaction gave rise to the preparation of triphenvl-stibamines. Most of the present development of the organic-antimony derivatives, however, is due to the work done by Chemische, Fabrik Von Heyden who discovered the process of introducing into the aromatic nucleus the antimonial group through the agency of the diazoreaction. Great impetus was thus given to the synthesis of aromatic antimonial drugs and most of the antimony analogues of the aromatic

Indian Species of Artemesia.

Abstract: grows abundantly at high altitudes in the Himalaj^as from Kumaon to Kashmir; and it is said to grow even more abundantly and uniformly in Baluchistan, Chitral and Afghanistan. It grows in such abundance in the lastnamed country that it is used as a packing material for fruit which is imported from Kandahar. In spite of the abundant supply, santonin was not manufactured in India either for internal consumption or export, until very recently.