منابع مشابه
Legendary Heritage In High Performance
MRS BULLETIN • VOLUME 31 • MARCH 2006 167 From Mirror to Mist: Cracking the Secret of Fracture Instabilities When cracks in a material propagate, bonds between atoms are broken, generating two new surfaces. Experiments have shown that cracks moving at low speeds create atomically flat, mirror-like surfaces, whereas cracks moving at higher speeds create increasingly rough fracture surfaces. Dyna...
متن کاملHero worship
This month, as the surest route to public embarassment, I decided to write about scientific heroes. Today’s world is full of talk of mentoring. Graduate students are told to find supervisors who will intellectually nourish them, emotionally support them, and teach them networking and grantspersonship. As I tap away, I can almost hear Uncle Syd muttering that the world is going to the dogs. In h...
متن کاملMy hero
[email protected] For the past 28 years I have talked about him, usually when people asked about the patients I treated as a hospital doctor or when asked about heroes. He was an inauspicious man, wrinkled by the years and with lungs which bore witness to decades of smoking. Late one night and after a long weekend on-call, I received a message from admissions telling me of his chest infect...
متن کاملThe legendary Rome halo displays.
The two Rome halo displays of 1629 and 1630 are prominent in the early halo literature, and the 1629 display is still cited today for having contained a 28 degrees circular halo. We have examined seventeenth century correspondence and publications in order to learn as much as possible about the existing documentation of the two displays. We find the documentation to be too weak to support a def...
متن کاملFrom water to aquaretics: a legendary route.
Man is water. When life appeared on earth, the primordial cell had a simple structure and could immediately ascertain from the surrounding aquatic environment the substances for nutrition and oxygen, without any need for structural complexity. As part of evolution, during the transition from aquatic to terrestrial life, vertebrates had to fight against dehydration as well as fish in the sea. In...
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ژورنال
عنوان ژورنال: JOURNAL OF CLINICAL AND DIAGNOSTIC RESEARCH
سال: 2017
ISSN: 2249-782X
DOI: 10.7860/jcdr/2017/17462.9813