by H. Balslev and J.L. Luteyn (1992)
"Twenty papers resulting from a 1991 symposium in Denmark on the páramo ecosystem that extends from western Venezuela, Colombia, Ecuador and northern Peru. Rather than adaptations to climate, as previously believed, these high-altitude grasslands are now clearly seen as artefacts of human intervention"--Handbook of Latin American Studies, v. 57.
Guy R. Newell and Waun Ki Hong
New approaches to basic research, and the success of various chemotherapies for cancer of the aerodigestive tract, are among the topics of the 20 papers, from a February 1991 conference in Houston. Risk factors such as alcohol, smokeless tobacco, and asbestos, are considered, as are possible methods of prevention suggested by current chemotherapy, and epidemiological studies of vitamin A intake.
Miral Dizdaroglu and Ali Esat Karakaya
"Damage to DNA by both exogenous and endogenous sources is increasingly regarded as highly important in the initiation and progression of cancer and in the occurance of other pathological events. DNA damage caused by reactive oxygen-derived species, also called oxidative DNA damage, is most the frequent type encountered by aerobic cells. Mechanistic studies of carcinogenesis indicate an important role of this type of damage to DNA. There is also strong evidence to support the role of oxidative DNA damage in the aging process. DNA damage is opposed in vivo by repair systems. If not repaired, DNA damage may lead to detrimental biological consequences. Therefore, the repair of DNA damage is regarded as one of the essential events in all life forms. In recent years the field of DNA repair has flourished due to new findings on DNA repair mechanisms and the molecular basis of cancer. A detailed knowledge of mechanisms of DNA damage and repair, and how individual repair enzymes function may lead to manipulation of DNA repair in cells and ultimately to an increase of the resistence of human cells to DNA-damaging agents. This volume covers the most recent devlopments in this research field and contains contributions from scientists working in the fields of biochemistry, molecular biology, enzymology, biomedical science, and radiation biology."--Pub. desc.
Peter A. Clarkson, Frank W. Nijhoff
There has in recent years been a remarkable growth of interest in the area of discrete integrable systems. Much progress has been made by applying symmetry groups to the study of differential equations, and connections have been made to other topics such as numerical methods, cellular automata and mathematical physics. This volume comprises state of the art articles from almost all the leading workers in this important and rapidly developing area, making it a necessary resource for all researchers interested in discrete integrable systems or related subjects.
D. Reguera, L.L. Bonilla, J.M. Rubí (eds
A rich variety of real-life physical problems which are still poorly understood are of a nonlinear nature. Examples include turbulence, granular flows, detonations and flame propagation, fracture dynamics, and a wealth of new biological and chemical phenomena which are being discovered. Particularly interesting among the manifestations of nonlinearity are coherent structures. This book contains reviews and contributions reporting on the state of the art regarding the role of coherent structures and patterns in nonlinear science.