to evaluate integrated weed management on yield and weed biomass of bean an experiment were conducted as a split plot based on randomized complete block design with three replications at the research station of agriculture  in damavand in 2014.main plot of the mechanical control (cultivation)levels including the application and no application of cultivator and sub-plots chemical control levels ...

Gannets are large seabirds that hunt fish from the air, making a plunge dive followed by active swimming pursuit of prey. A recent study shows that they convert from aerial to aquatic vision nearly instantly.

Pursuit can be guided by perceived rather than physical motion, but the temporal relationship between motion perception and pursuit is unknown. We used an apparent motion stimulus consisting of a horizontal row of evenly spaced Kanizsa illusory squares (1.44 deg2): the illusory contours appeared at the midpoints of the illusory squares presented in the previous frame, producing bi-directional a...

This article uses the mass-media career of the British psychiatrist David Stafford-Clark (1916-1999) as a case study in the exercise of cultural authority by celebrity medical professionals in post-war Britain. Stafford-Clark rose to prominence in the mass media, particularly through his presenting work on medical and related topics for BBC TV and Radio, and was in the vanguard of psychiatrists...

Culture fundamentally shapes how individuals make meaning out of illness, suffering, and dying. With increasing diversity in the United States, encounters between patients and physicians of different backgrounds are becoming more common. Thus the risk for cross-cultural misunderstandings surrounding care at the end of life is also increasing. Studies have shown cultural differences in attitudes...

jabra ibrahim jabra, one of the most prolific arab authors, has enriched the arabic library and the mind of his audience by first functioning as a link in a rich chain of past cultural, artistic, and literary heritage; and second by reflecting the modern arab intellectual's classical mindset. he has a multifaceted career as a short story writer, novelist, critic, poet, playwright, and pain...

rawls’ theory of justice is expressed in a constructivist procedure. he holds that his constructivist procedure is free of metaphysical presuppositions. his constructivist procedure is here pursued in three stages: (1) in a theory of justice, rawls intends to come to moral principles regarding the original position which could even result in other moral principles as well. he also asserts some ...

Professor Mirko D Grmek, historian of science and medicine, died in Paris on 6 March 2000 aged seventy-six, at the end of a long and trying disease, amyotrophic lateral sclerosis. "Crossing the borders" can be taken as the motto of his life and work. Without ever losing his cultural and personal roots, he was ready to widen and expand his interests and subjects of work. Of Croatian origin, he b...

March, 2000 AFRICA N John Cohen was a product of the democratic frontier ethos of the American West. A rigorous stickler for accuracy of detail and fidelity to the facts, he was at the same time an unwavering optimist. His writing and teaching was infused with a moral vision––that ordinary men and women are endowed with the innate capacity to solve their common problems, to learn from mistakes ...