✦ LIBER ✦

Basic principles on which the system of standards for electrical units can be perfected

✍ Scribed by V. O. Arutyunov

Book ID: 112415995
Publisher: Springer US
Year: 1974
Tongue: English
Weight: 573 KB
Volume: 17
Category: Article
ISSN: 0543-1972
DOI: 10.1007/bf00817088

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Every system should have one: A collecti

Every system should have one: A collection of properties which can be used as a criterion for evaluating the quality of a system

✍ Leonard Wilkerson; Arthur Paul 📂 Article 📅 1985 🏛 Elsevier Science 🌐 English ⚖ 355 KB

United States Pharmacopœia. Ninth Revisi

United States Pharmacopœia. Ninth Revision. Abstract of Proposed changes with new Standards and Descriptions**Permission to reprint for purposes of comment can be had on application to the Chairman of the Board of Trustees, J. H. Beal, Scio, Ohio.

📂 Article 📅 1914 🏛 Elsevier ⚖ 809 KB

A fifth installment of the Abstract of proposed new descriptions and standards and of changes in descriptions and standards is herewith submitted. This Abstract embraces most of the Biological Products and Volatile Oils. Where no reference is made to rubrics, tests or assays, it is understood that

Journal of the United States pharmacopœi

Journal of the United States pharmacopœial. Tenth Revision. Abstract of proposed changes with new standards and descriptions**(Copyright, 1923, by the Board of Trustees of the United States Pharmacopceial Convention. All Rights Reserved. Permission to reprint for purpose of comment can be had on application to the Chairman of the Board of Trustees.

✍ Beal, J.H. 📂 Article 📅 1924 🏛 Elsevier ⚖ 240 KB

Journal of the United States pharmacopœi

Journal of the United States pharmacopœia. Tenth revision. Abstact of proposed changes with new standards and descriptions.**Copyright, 1923, by the Board of Trustees of the United States Pharmacopeial Convention. All right Reserved. Permission to reprint for the purposes of comment can be had on application to the Chairman of the Board of Trustees,Bio-Assays and Proximate assays

✍ Beal, J.H. 📂 Article 📅 1924 🏛 Elsevier ⚖ 968 KB

Acute and Chronic Toxicity of Veratrum V

Acute and Chronic Toxicity of Veratrum Viride††The Veratrum viride studied was the whole-powdered drug marketed by Irwin, Neisler & Co. under the name, Vertavis. The work reported herein was supported by a grant from this firm. The batch of powder used in these experiments was stated by the manufacturer to have been assayed biologically by the Craw method on Daphnia magna. One Craw unit of the material studied was stated to be 15.6mg. With regard to this assay, Mr. R. O. Craw has been so kind as to allow us to publish a brief explanation: A reference lot of Yerolrum oirid; powder was set-aside as a standard and a 10% w/v aqueous extract was made of this powder. The average median length of life in 50 assays of 1000 daphnia on immersion in the solution was determined to be 2.22 hours. The daphnia were considered dead when the heart was found to be in systolic standstill on microscopic examination. Succeeding lots of powder were assayed and their potency determined by relating the median length of life of daphnia to 2.22 hours, which is one unit. Twenty assays of 10 animals each were used on each lot of powder.‡‡The authors wish to thank Dr. J. F. A.,McManus of the Department of Pathology for a pathologic report on the tissues, and Mr. James Thomas and Mrs. Bobby E. Teague for technical assistance.

✍ Perdue, Adoline S. ;Bell, Frances ;Starnes, W.R. ;Hitchcock, Philip ;Teague, R.S 📂 Article 📅 1950 🏛 Elsevier ⚖ 346 KB 👁 2 views