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Author : Anonim
Publisher : Malaysia Biodiversity Information System (MyBIS)
Page : 142 pages
File Size : 50,6 Mb
Release : 2013-10-13
Category : Electronic
ISBN : 8210379456XXX
iNewsletter on biological diversity in Malaysia to facilitate international access to information on the status of biodiversity studies and biodiversity management in Malaysia.
Author : Anonim
Publisher : Malaysia Biodiversity Information System (MyBIS)
Page : 124 pages
File Size : 50,6 Mb
Release : 2012-12-18
Category : Electronic
ISBN : 8210379456XXX
iNewsletter on biological diversity in Malaysia to facilitate international access to information on the status of biodiversity studies and biodiversity management in Malaysia.
Author : Anonim
Publisher : Malaysia Biodiversity Information System (MyBIS)
Page : 134 pages
File Size : 47,7 Mb
Release : 2013-10-13
Category : Electronic
ISBN : 8210379456XXX
iNewsletter on biological diversity in Malaysia to facilitate international access to information on the status of biodiversity studies and biodiversity management in Malaysia.
Author : A. Douglas Kinghorn,Heinz Falk,Simon Gibbons,Yoshinori Asakawa,Ji-Kai Liu,Verena M Dirsch
Publisher : Springer Nature
Page : 344 pages
File Size : 53,7 Mb
Release : 2023-01-01
Category : Science
ISBN : 9783031104572
This book describes a unique class of secondary metabolites, the mono- and dimeric-naphthylisoquinoline alkaloids. They exclusively occur in lianas of the palaeotropical Ancistrocladaceae and Dioncophyllaceae plant families. Their unprecedented structures include stereogenic centers and rotationally hindered, and therefore stereogenic, axes. Extended recent investigations on six Ancistrocladus species from Asia, as reported in this contribution, shed light on their fascinating phytochemical productivity, with over 100 intriguing natural products. This high chemodiversity arises from a similarly unique biosynthesis from acetate-malonate units, following a novel polyketidic pathway to plant-derived isoquinoline alkaloids. Some of the compounds show most promising anti-parasitic activities. Additionally, strategies for the regio- and stereoselective total synthesis of the alkaloids, including the directed construction of the chiral axis, are also presented.
Author : Anonim
Publisher : Elsevier
Page : 446 pages
File Size : 49,9 Mb
Release : 2024-06-14
Category : Science
ISBN : 9780443295553
The Alkaloids: Chemistry and Biology, Volume 91, the newest release in a series that has covered the topic for more than 60 years, discusses key aspects of alkaloid chemistry, biology and pharmacology. Sections in this release include chapters on Recent Progress in the Chemistry of Naphthylisoquinoline Alkaloids. Provides the latest information on the study of alkaloids Covers alkaloid chemistry, biology, pharmacology, and medical applications Contains more than 80 published volumes in this interesting field of study
Author : Anonim
Publisher : Unknown
Page : 588 pages
File Size : 53,8 Mb
Release : 1993
Category : Geology
ISBN : CHI:54462338
Author : Geological Society of Malaysia
Publisher : Unknown
Page : 370 pages
File Size : 52,8 Mb
Release : 1968
Category : Geology
ISBN : MINN:31951000572437N
Author : Geological Society of Malaysia
Publisher : Unknown
Page : 328 pages
File Size : 41,5 Mb
Release : 1968
Category : Geology
ISBN : MINN:31951000572439J
Author : Anonim
Publisher : Unknown
Page : 608 pages
File Size : 45,9 Mb
Release : 1983
Category : Soil conservation
ISBN : UOM:39015014694965
Author : John W. Rowe
Publisher : Springer Science & Business Media
Page : 1275 pages
File Size : 41,9 Mb
Release : 2012-12-06
Category : Science
ISBN : 9783642740756
Wood as found in trees and bushes was of primary importance to ancient humans in their struggle to control their environment. Subsequent evolution through the Bronze and Iron Ages up to our present technologically advanced society has hardly diminished the importance of wood. Today, its role as a source of paper products, furniture, building materials, and fuel is still of major significance. Wood consists of a mixture of polymers, often referred to as lignocellulose. The cellulose micro fibrils consist of an immensely strong, linear polymer of glucose. They are associated with smaller, more complex polymers composed of various sugars called hemicelluloses. These polysaccharides are embedded in an amorphous phenylpropane polymer, lignin, creating a remarkably strong com posite structure, the lignocellulosic cell wall. Wood also contains materials that are largely extraneous to this lignocellulosic cell wall. These extracellular substances can range from less than 1070 to about 35% of the dry weight of the wood, but the usual range is 2% -10%. Among these components are the mineral constituents, salts of calcium, potassium, sodium, and other metals, particularly those present in the soil where the tree is growing. Some of the extraneous components of wood are too insoluble to be ex tracted by inert solvents and remain to give extractive-free wood its color; very often these are high-molecular-weight polyphenolics.
Author : Anonim
Publisher : Unknown
Page : 162 pages
File Size : 55,6 Mb
Release : 1973
Category : Geology
ISBN : CHI:12257842
Author : Institut Penyelidikan Perhutanan Malaysia
Publisher : Unknown
Page : 266 pages
File Size : 49,7 Mb
Release : 2015
Category : Forest products
ISBN : UCBK:C112300924
Author : Anonim
Publisher : Unknown
Page : 224 pages
File Size : 42,5 Mb
Release : 2000
Category : Mineral industries
ISBN : NYPL:33433063380905
Author : United States International Trade Commission
Publisher : Unknown
Page : 196 pages
File Size : 44,5 Mb
Release : 1993
Category : East Asia
ISBN : IND:30000089095354
Author : Julie Bringe,Cynthia Foreso,Michael Hagey,Eric Land
Publisher : DIANE Publishing
Page : 195 pages
File Size : 55,9 Mb
Release : 1997-04
Category : Electronic
ISBN : 9780788141607
An investigation of the causes and implications for the U.S. of increasing economic integration in East Asia. Includes: an overview of trends in and conditions for trade, investment, and economic integration in East Asia: host country policies and factors influencing those trends and conditions; external factors affecting the business activities of major traders and investors in the region; the relationship between foreign direct investment in the region and the region's trade patterns with others; energy needs and resources in the region; environmental conditions and opportunities for local and U.S. interests.