Results 71 to 80 of about 2,528,909 (215)

On Race and Miscegenation: Portuguese Racial Studies During the 1930s and 1940s

open access: yesHoST
In the first half of the twentieth century, miscegenation was widely discussed internationally, particularly as to the possibility of being biologically harmful.
Cabrita Alexandra
doaj   +1 more source

The genetics of host adaptation in the parasitic plant Striga hermonthica [PDF]

open access: yes, 2013
The obligately outbreeding root hemiparasite Striga hermonthica (Orobanchaceae)is a serious threat to subsistence agriculture in sub-Saharan Africa. Resistance to this parasite in its crop hosts, such as rice, sorghum and maize, is not common, and the ...
Pescott, Oliver
core  

Trophic structure in a seabird host-parasite food web: insights from stable isotope analyses

open access: yes, 2010
Ecological studies on food webs rarely include parasites, partly due to the complexity and dimensionality of host-parasite interaction networks. Multiple co-occurring parasites can show different feeding strategies and thus lead to complex and cryptic ...
Gómez-Díaz Elena   +3 more
core   +1 more source

La host (1994) Any VIII. Núm. 3

open access: yes, 1994
SUMARI: Salutació. Crònica Reial.Els Templers en la Conquesta. Activitats de l'any 1993.La Host i les Colles.La gala dels Alcaids.Els Alcaids del Castell Vell.Homenatge a la Patrona.La Host per terres de Sòria.Pregó de la host.La Romeria.Els Bous.La ...
Pardo, Enrique   +7 more
core  

The Role of Carbon Dioxide in Host-Finding by Mosquitoes (Diptera: Culicidae): A Review [PDF]

open access: yes, 1980
\ud From a critical review of the literature, it is concluded that the role of carbon dioxide in host-seeking by mosquitoes comprises two distinct actions.
Gillies, M.T.
core  

A Global History of the 1919 Total Solar Eclipse

open access: yesHoST
In this paper, we are looking at the British expeditions that observed the 1919 total solar eclipse in Sobral (Brazil) and Príncipe island as scientific practice embedded in their geographical, social, and world-political context.
Simões Ana   +4 more
doaj   +1 more source

Closing Doors and Opening Gates: Professor Ruggles Gates, “Race Crossing” Research, and the Strange Survival of Scientific Racism in Post-war Australia

open access: yesHoST
In 1958, botanist-biologist Professor Reginald Gates conducted biometric and anthropometric “race crossing” studies on populations spanning Australia and Papua New Guinea.
Brown Robert
doaj   +1 more source

Home - About - Disclaimer - Privacy