منابع مشابه
Editorial Sue Buckley
The first paper, entitled Françoise, a fifteen year follow-up, from Jean Rondal and his colleagues M. Elbouz, M. Ylieff, and L. Docquier, at the University of Liège in Belgium presents an individual case study that describes in detail the changes in language and memory function of Françoise, a 47 year old lady with Down syndrome. Françoise will already be well known to many in this field as she...
متن کاملT H E Microstructure of T H E Compound Eyes of Insects* by Timothy H. Goldsmith~ and Delbert E. Philpott
The arthropod compound eye differs fundamentally from the vertebrate eye, both morphologically and functionally. In insects it is constructed of a number of units called ommatidia, each consisting of about eight elongate retinula cells arranged around a central axis, the rhabdom (Text-fig. 1). Surrounding the retinula cells is a sleeve of pigment cells which probably serves to isolate, structur...
متن کاملA Comparison of T H E Growth of Selected Mycobacteria
The cytoplasm of HeLa cells provides a favorable site for the rapid multiplication of tubercle bacilli and several other species of mycobacteria pathogenic for humans (1). The purpose of the present study was to learn the comparative suitability for the growth of mycobacteria of some other human and simian cells growing in tissue culture of the monolayer type. Human amnlon and monkey kidney cel...
متن کاملT H E Initiation and Growth of Tumors
The tumor process, in the main, consists of initiation and growth. In these studies initiation implies the conversion of normal tissue to malignant tissue without consideration of intermediary phases, of which little is known. Since, for practical purposes, initiation and growth are readily differentiated, they have been studied separately. Great importance has been attached to the dissimilarit...
متن کاملNi2As2O7 pyrochlore nanomaterial: Solid state synthesis, crystal structure determination, crystal phase growth study and physical properties
Nanostructured Ni2As2O7 semiconductor samples were synthesized by a solid state method among As2O3 and Ni(NO3)2.6H2O raw materials at 650 °C (S1) and 750 °C (S2) as reaction temperatures. The synthesized nanomaterials were characterized by powder X-ray diffraction (PXRD) technique and F...
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ژورنال
عنوان ژورنال: Acta Crystallographica
سال: 1951
ISSN: 0365-110X
DOI: 10.1107/s0365110x51001987