this paper deals with the threshold radius that warrants the use of single restraining rail for transit and railroads. different railways use different threshold radius from 91m to 365m to provide restraining rail. these threshold figures are probably experience driven choices. the need for restraining rail may be related to a so-called derailment alarm coefficient of 1.2 sustained over 2m leng...

in number (16 of 22) of infants in the dutch laboratory rabbit breeding colony, in aged 45-65 days old, hair loss (alopecia) seen at the top of the head and around a week after the hair fall, was created in a state of complete alopecia. for determination of the cause of hair loss, after the observation and palpation the alopecic area, there have not been any swelling, abscesses, tumors. in s...

Background: Lipopolysaccharides (LPSs) and several antigenic proteins of Brucella have been considered for preparation of diagnostic reagents and subunit vaccines. The objective of this study was to identify and compare immunogens of B. abortus S19 which induce humoral immune responses in human, goat and rabbit. Material and Methods: The bacterial whole cell extract was prepared in extraction b...

field ion microscopy (fim) and scanning tunneling microscopy (stm) have found a wide application in nanotechnology. these microscopes use a metallic nanotip for image acquisition. resolution of fim and stm images depends largely on the radius of nanotip apex; the smaller the radius the higher the resolution. in this research, for tungsten nanotip fabrication, electrochemical etching of tungsten...

background : the aim of the current study was to develop a marking technique as an internal marker to mark post blood meal mosquitoes by using stable phosphate isotope 32 p and determine the optimal concentration of it. methods : an isotonic physiological saline solution, containing different concentration of radioactive isotope 32 p-labeled disodium phosphate (na 2 h 32 po4) was injected into ...

In Pierrehumbert (1980) three rising accents are posited for English, H*, L+H* and L*+H, but this three-way contrast has often been disputed. In the present experiment, Minnesotan and Southern Californian speakers read two dialogs which included four levels of emphasis. Emphasis lengthened segmental duration, raised the scaling of all tones and delayed H alignment in L+H*. Independently of emph...

the possibility of replacing the rabbit pyrogen test by the limulus amebocyte lysate (lal) test, as a final release test for large volume parenterals (lvps) was investigated. the sensitivity and specificity of the lal test and rabbit pyrogen assay were studied by means of artificially contaminated parenterals. various lvps (mostly containing electrolytes) were spiked with 0.5 and 5 eulml of e.c...

We describe the purification procedure and some of the physiochemical properties of gelsolin, a major Ca2+-dependent regulatory protein of actin gel-sol transformation in rabbit lung macrophages. Gelsolin accounts for the majority of Ca2+ control of actin gelation in macrophage extracts. It is a single polypeptide chain with an average molecular weight of 91,000 a Stokes radius of 44 A, a sedim...

Background: Osteoporosis is a common condition among the elderly population, and is associated with an increased risk of fracture. One of the most common fragility fractures involve the distal radius, and are associated with risk of subsequent fragility fracture. Early treatment with bisphosphonates has been suggested to decrease the population hip fracture burden. However, there have been no p...