8 research outputs found
A re-examination of the life and work of A.F.G. Kerr and of his colleagues and friends
Arthur Francis George Kerr’s life is reviewed and related to a previously published account. Kerr’s collecting activity
is analysed using an expanded version of the Thai Biogeography Group’s database of collections. 8,666 of the total 48,970 collections
are Kerr’s and 3,178 are those of his colleagues and friends. Therefore, the total number of collections made by Kerr and his
acquaintances is likely to be larger and more diverse than previously believed. Mapping of these data using GIS show that Kerr’s
collecting activities focussed on particular regions of Thailand at particular times. Also large areas of the country remained unexplored
by Kerr and his acquaintances: a pattern that, to some extent, persists to this day. The large, but dispersed, archive of Kerr’s
photographs, maps, living collections and correspondence indicate that he was a skilled photographer (taking at least 3,000 images),
cartographer (producing many hand-drawn maps) and exceptionally acute, accurate and detailed observer (filling numerous notebooks
and leaving other records). It is clear that digitising these collections to form an on-line dedicated website is highly desirable
to further progress on the flora of Thailand and surrounding countries and would form an unique record of the social history of early
20thC Thailand
A re-examination of the life and work of A.F.G. Kerr and of his colleagues and friends
Arthur Francis George Kerr’s life is reviewed and related to a previously published account. Kerr’s collecting activity
is analysed using an expanded version of the Thai Biogeography Group’s database of collections. 8,666 of the total 48,970 collections
are Kerr’s and 3,178 are those of his colleagues and friends. Therefore, the total number of collections made by Kerr and his
acquaintances is likely to be larger and more diverse than previously believed. Mapping of these data using GIS show that Kerr’s
collecting activities focussed on particular regions of Thailand at particular times. Also large areas of the country remained unexplored
by Kerr and his acquaintances: a pattern that, to some extent, persists to this day. The large, but dispersed, archive of Kerr’s
photographs, maps, living collections and correspondence indicate that he was a skilled photographer (taking at least 3,000 images),
cartographer (producing many hand-drawn maps) and exceptionally acute, accurate and detailed observer (filling numerous notebooks
and leaving other records). It is clear that digitising these collections to form an on-line dedicated website is highly desirable
to further progress on the flora of Thailand and surrounding countries and would form an unique record of the social history of early
20thC Thailand
A re-examination of the life and work of A.F.G. Kerr and of his colleagues and friends
Arthur Francis George Kerr’s life is reviewed and related to a previously published account. Kerr’s collecting activity
is analysed using an expanded version of the Thai Biogeography Group’s database of collections. 8,666 of the total 48,970 collections
are Kerr’s and 3,178 are those of his colleagues and friends. Therefore, the total number of collections made by Kerr and his
acquaintances is likely to be larger and more diverse than previously believed. Mapping of these data using GIS show that Kerr’s
collecting activities focussed on particular regions of Thailand at particular times. Also large areas of the country remained unexplored
by Kerr and his acquaintances: a pattern that, to some extent, persists to this day. The large, but dispersed, archive of Kerr’s
photographs, maps, living collections and correspondence indicate that he was a skilled photographer (taking at least 3,000 images),
cartographer (producing many hand-drawn maps) and exceptionally acute, accurate and detailed observer (filling numerous notebooks
and leaving other records). It is clear that digitising these collections to form an on-line dedicated website is highly desirable
to further progress on the flora of Thailand and surrounding countries and would form an unique record of the social history of early
20thC Thailand
Relationship Among a Supernova, a Transition of Polarity of the Geomagnetic Field and the Pliocene-Pleistocene Boundary
After the Middle Miocene, two important climatic changes took place, consisting mainly of cooling in both hemispheres. One occurred between 7.0 and 5.4 Ma and another at the end of the Pliocene, which marked the beginning of the Pleistocene in approximately 2.58 Ma. The proposal of thispresentation is to analyze diverse forcings of these climatic changes, such as the influence of the joint occurrence of reversions of the geomagnetic field andexplosions of a supernova. These events occurred coincidentally with thecooling of Earth. Also, biological changes in those time intervals are analyzed,especially the evolution of the Hominins since the oldest hominin fossils. Thecharacteristics of the Galactic Cosmic Rays, its influence on the climate and its potential mutogenetic effect were taken into account.Briefly, according to our analysis, it seems to be evident that together withother factors, the joint occurrence of the explosion of a supernova at less than100 pc from the Earth and the weakening and/or reversion of the GeomagneticField was an important factor that promoted these two climatic and ecosystemchanges.Fil: Compagnucci, Rosa Hilda. Universidad de Buenos Aires; Argentina. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas; ArgentinaFil: Orgeira, Maria Julia. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Oficina de CoordinaciĂłn Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; ArgentinaFil: Sinito, Ana Maria. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas; ArgentinaFil: Cappellotto, Luiggina. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Oficina de CoordinaciĂłn Administrativa Ciudad Universitaria. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires; ArgentinaFil: Plastani, MarĂa SofĂa. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Oficina de CoordinaciĂłn Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentin