Author: Publisher:
ISBN:
Category : Science
Languages : en
Pages : 482
Book Description
Government Reports Announcements & Index
Author: Health Effects Assessment Summary Tables
Author: Publisher:
ISBN:
Category : Health risk assessment
Languages : en
Pages : 414
Book Description
Protective Groups in Organic Chemistry
Author: J. McOmiePublisher: Springer Science & Business Media
ISBN: 1468472186
Category : Science
Languages : en
Pages : 423
Book Description
During the past decade there has been a great increase in the use of protective groups, especially in the synthesis of large and complex organic molecules. Perhaps the greatest activity has been in the peptide field where such triumphs as the total synthesis of insulin and of bovine ribonuclease (molecular weight 13,700) have been achieved. Correspondingly, more protective groups have been devised for the protection of amino and imino groups than for any other functional group. There are many reviews and books on the synthesis of pep tides but there has been no general survey of protective groups since my 1 own review in 1963. At that time the five main methods for the removal of protective groups involved acid or base hydroly sis, reduction, oxidation, or thermal elimination reactions. Recent advances include the use of photo-sensitive and metal ion sensitive protective groups, and the attachment of functional groups to reactive polymers as a method of protec tion during the solid-phase synthesis of peptides and poly nucleotides. Another interesting development is the design and use of protective groups with a built-in 'safety-catch', which can be 'released' by a specific chemical reaction, so that an otherwise stable bond is made labile at the appropriate moment thereby allowing the protective group to be removed under very 2 mild conditions. My own interest in protective groups dates from 1944 when, as a student, I gave two lectures on the subject and produced an 11 page review including 70 references.
Amazing Light
Author: Raymond Y. ChiaoPublisher: Springer Science & Business Media
ISBN: 1461223784
Category : Science
Languages : en
Pages : 675
Book Description
This Festschrift is a collection of essays contributed by students, colleagues, and ad mirers to honor an eminent scholar on a special anniversary: Charles Hard Townes on the occasion of his 80th birthday, July 28, 1995. In 1964, Townes shared the Nobel Prize in physics with Alexander Mikhailovich Prokhorov and Nikolai Gen nadyevich Basov "for fundamental work in the field of quantum electronics, which has led to the construction of oscillators and amplifiers based on the maser-laser principle. " His contributions have covered a much wider area, however. His fruitful interests spanning several decades have included many scientific subjects, includ ing, microwave spectroscopy and astrophysics (other articles in this volume will expand further on this point). He has also contributed to public service, having served as the chairman of the Science and Technology Advisory Committee for NASA's Apollo program, and as a member and vice chairman of the President's Science Advisory Committee. As the enormous breadth of contributions from his students shows, he has educated scholars who are now in a wide range of fields. The contributions from his many admirers, among whom are nine fellow Nobel laureates, attest to his impact on many disciplines ranging from electrical engi neering to medicine. His influence extends even to theology, as is indicated by one essay. The broadly international character of this Festschrift reflects his deep belief in the international, universal nature of science.
Remediation Case Studies
Author: Publisher:
ISBN:
Category : Hazardous waste site remediation
Languages : en
Pages : 176
Book Description
Chemicals Identified in Human Biological Media
Author: The Microscopic Determination of the Nonopaque Minerals
Author: Esper Signius LarsenPublisher: Franklin Classics
ISBN: 9780341830207
Category :
Languages : en
Pages : 310
Book Description
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Founders of Sciences in Ancient India
Author: Satya PrakashAn English and Arabic Dictionary, in Two Parts
Author: Joseph CatafagoPublisher:
ISBN:
Category : Arabic language
Languages : en
Pages : 340
Book Description
Handbook of Mechanical Engineering
Author: Heinrich DubbelPublisher: Copernicus
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 942
Book Description
Dubel's Handbook has provided generations of German-speaking engineers with a comprehensive source of guidance and reference on which they can rely throughout their professional lives. DLC: Mechanical engineering.