The hi gh fi eld strength of fe mtosecond laser pulses leads to non I incar effects during the interacti on with condensed matter. One such e ffect is the ab latio n process, which can be initiated he low the threshold of common thermal ahlation if the excitation pul ses are suffic iently short . This effec t leads to structure formation, which is an isotropic because of the polari zation prope...

N current models (e.g., WHITEHOUSE 1963; HOLLIDAY 1964) ; recombination I and gene conversion are postulated to have some processes in common, such as the formation of hybrid-DNA: factors influencing these particular processes should therefore have related effects on recombination and conversion frequencies. Processes not in common might be affected differently, so some treatments should cause ...

In 1943 in a review of the factors producing adrenal cortical hypertrophy, Tepperman, Engel, and Long"1 suggested that, "The cortical hormone may inhibit the adrenotropic activity of the anterior lobe, and the adrenotropic secretion may therefore increase if the cortical hormone concentration in the body fluids falls. A fall in the cortical hormone concentration may be brought about by an incre...

I N T R O D U C T I O N T h e mechan i ca l o u t p u t o f f rog whole muscles a n d of s ingle f ibers falls because o f fa t igue w h e n they are s t imu la t ed direct ly at low f r equenc ie s to p r o d u c e twitches or at h igh f r equenc i e s to p r o d u c e a t e t anus ( A s m u s s e n , 1934; Ramsey , 1953; Mar6cha l a n d M o m m a e r t s , 1963; Eber s t e in a n d S a ndow ,...

B ecause obesity is a powerful risk factor for the development of type 2 diabetes, genes involved in the pathogenesis of obesity might also play a role in type 2 diabetes (1). In obese subjects, heterozygous carriers of a pentanucleotide insert ion in the 3 untranslated region (UTR) of the LEPR gene had lower serum insulin concentrations than subjects homozygous for the more common deletion all...

In a number of ways, the United ingdom’s National Health Service NHS) is a unique experiment, springng from the fusion at the end of World ar II of a number of synergistic eleents: a powerful desire for social hange; a determination on the part of he populace not to repeat the experince of the broken promises after orld War I; the presence on the table n 1945 of a plan for social service reorm,...

Gattass and collaborators (Gattass R, Rosa MGP, Souza APB, Piñon MCG, Neuenschwander S [1990a] Braz J Med Biol Res 23:375-393) proposed that the dorsal stream of visual processing, as defined by Ungerleider and Mishkin (Ungerleider LG, Mishkin M [1982] In: Ingle DJ, Goodale MA, Mansfield RJW, editors. Analysis of visual behavior. Cambridge: Massachusetts Institute of Technology. p 549-586), can...

Ingle SB et al.1 reported concerning a patient with eosinophilic gastroenteritis (EGE) in a recent issue of your journal, whose chronic diarrhea was successfully treated with oral steroids. This patient stimulated our interest because there is a lack of data in the literature regarding the therapeutic role of steroids in the treatment of EGE. The present case report is also noteworthy because i...

Neurology. Oxford University Press, New York Moody S L, Wise S P, di Pellegrino G, Zipser D 1998 A model that accounts for activity in primate frontal cortex during a delayed matching-to-sample task. Journal of Neuroscience 18(1): 399–410 Olson C R, Gettner N 1995 Object-centered direction selectivity in the supplementary eye field of the macaque monkey. Science 269: 985–8 Petersen S E, Fox P T...

t ( s t a ( s a c s t t ( a o a O F c m t a P w 1 i a We surveyed 15 wild and cultivated plant species in earch of fruit fly (Diptera: Tephritidae) parasitoids uring 4 years (1993–1996) in the state of Veracruz, exico. The following species were infested by Anastreha larvae: Spondias purpurea L., S. mombin L., Tairira mexicana Marchand, Mangifera indica L. (all nacardiaceae), Ximenia americana ...