Evolution and Testing of the Lacunar Hypothesis" by Bamford and Warlow in this issue of Stroke reviews many important aspects of these unique pathologic vascular lesions. I concur with the authors' emphasis on the need to maintain homogeneity in the classification of stroke conditions, specifically lacunes. A stroke classification scheme would ideally be based on 1) risk factor profile such as ...

We survey the recent applications and developments of sieve methods related to discrete groups, especially in the case of infinite index subgroups of arithmetic groups.

Monofilament nylon strings with a range of diameters, commercially marketed as harp strings, have been tested to establish their long-term mechanical properties. Once a string had settled into a desired stress state, the Young's modulus was measured by a variety of methods that probe different time-scales. The modulus was found to be a strong function of testing frequency and also a strong func...

To distinguish and define the differentiative and communicative relations of Ly123 and Ly1 cells in generating specific helper-effector (HE) (Ly1:HE) and specific suppression-inducing (SI) (Ly1:SI) cells, these two functional sets were generated from various combinations of congenic genetically marked sets of cortisone-resistant nylon-purified thymocytes (CRNPT) by culture on antigen-primed mac...

Despite the commercial importance of melt-spun fibres there are many aspects of their science that are not well understood. A common working model of fine structure is a pseudo-fibrillar assembly of crystallites linked by tie molecules in amorphous regions, but other possibilities are suggested . Heat-setting is an accepted industrial practice, but the science is poorly understood: there is a l...

This study intends to establish the mechanical properties of polyamide fiber reinforced shotcrete (PAFRS) in terms of compressive and flexural strengths, in accordance with ASTM C1609/C1609M-12. The mechanical properties identified the influence of polyamide fiber content on the PAFRS strength. This study evaluated the toughness of PAFRS and proposed additional toughness level criteria to bette...

The objective of this study was to compare the absorption and M. hyopneumoniae detection by real-time PCR using nylon-flocked and rayon-bud swabs. Results of this study showed that absorption and detection of M. hyopneumoniae were significantly higher in nylon-flocked swabs with Ct differences only ranging from 0.5 to 1.7.

In vivo frictional properties of human skin and five materials, namely aluminium, nylon, silicone, cotton sock, Pelite, were investigated. Normal and untreated skin over six anatomic regions of ten normal subjects were measured under a controlled environment. The average coefficient of friction for all measurements is 0.46+/-0.15 (p<0.05). Among all measured sites, the palm of the hand has the ...

A nylon bar, with the head notched to make easy adequete contact with the short process of the malleus, was used for an acoustic probe. The first part of this paper deals with the acoustic properties of the nylon probe in comparison with those of a piano wire probe and a silver wire probe. The following results are obtained : (1) Clinically the most suitable length of the nylon probe was 8cm. (...