The picture on the following page is being reproduced here, at the request of the partici- pants in the Advanced Research Workshop "e;Amino Acid Availability and Brain Function in Health and Disease"e;.
It is apparent that wilt diseases continue to be a major problem in crop production because of the number of crops affected, the number and genetic variability of pathogens involved, and their widespread occurrence throughout tropical and temperate regions under a variety of cropping systems.
This volume is based on a workshop "e;Modulation of Synaptic Transmission and Plasticity in Nervous Systems"e; held in n Ciocco, Castelvecchio, Pascoli, Italy, from September 8th to 13th, 1987.
In recent years, tropical forests have received more attention and have been the subject of greater environmental concern than any other kind of vegetation.
Dieser Band in der Reihe "Naturwissenschaften Bibliothek" zeigt an einigen ausgesuchten Beispielen, vorgestellt im Rahmen des Studium Generale an der Universität Marburg, wie sich Irrtümer in der Wissenschaft ereignen können, welche - teilweise fruchtbaren - Auswirkungen sie haben können, und welche Konsequenzen sich aus der Fehlbarkeit der Wissen- schaftler ergeben sollten.
Honeybees are as small as flies or as large as hornets, nesting in nar- row cavities of trees and rocks or in the open on large limbs of trees 30 m above ground.
This monograph has been written in the hope that it will prove of value to medical students and clinicians, to Honours undergradu- ates in appropriate branches of the natural sciences, and to repro- ductive biologists in general.
th th On June 17 and 18 1987 the fourth workshop on "e;Azospi- rillum: Genetics, Physiology, Ecology"e; took place at the Uni ver- sity of Bayreuth, West Germany, organized by the Genetics depart- ment.
At last geochemists are offered one comprehensive reference book which gives the Eh-pH diagrams for 75 elements found in the earth's surface environment, including transuranic and other radioactive species.
Low temperature represents, together with drought and salt stress, one of the most important environmental constraints limiting the pro- ductivity and the distribution of plants on the Earth.
This volume comprises the lectures of the speakers at the NATO Advanced Research Workshop held at the Congress Centre The Flevohof at Biddinghuizen, The Netherlands, May 11-16, 1986.
The impacts of specifically experienced external and internal environments upon phylogenetically established pathways of ontogenetic development seem to be responsible for the intra-species variation of organisms.
The ability to use tools skillfully is generally regarded as one of the major achievements in the evolutionary development of the human nervous system.
In neurophysiology, the emphasis has been on single-unit studies for a quarter century, since the sensory work by Lettwin and coworkers and by Hubel and Wiesel, the cen- tral work by Mountcastle, the motor work by the late Evarts, and so on.
"e;Instead of dirt and poison we have rather chosen to fill our hives with honey and wax; thus furnisning mankind with the two noblest of things, which are sweetness and light"e;.
Readers of my books, students and scientists, often ask for spe- cial references not commonly found in introductory or interme- diate books on statistics.