In our true scholarly spirit, the MJM remains committed to supporting budding scientist at all stages of their careers. This year we are pleased to provide you with a unique collection of abstracts outlining the high caliber projects that were undertaken by the most recent winners of the 27th annual Montreal Regional Science and Technology Fair (MRSTF) that was held at Marianopolis College from...

Average earth temperatures rose 0.6 oC over the last century, according to the latest Intergovernmental Panel on Climate Change. But that increase pales in comparison to the 1.4–5.8 oC expected increase over this century. As temperatures climb, climate models predict that high-latitude, high-altitude regions like Yellowstone National Park will experience shorter winters and earlier snow melts. ...

Cryptographic Hash functions find ubiquitous use in various applications like digital signatures, message authentication codes and other forms of security. Their associated vulnerabilities therefore make them a prevalent target for cyber criminals. General means of defeating hash based authentication involves both discovering and exploiting inherent weakness in cryptographic hash functions or b...

A study of the mechanisms of cracking-induced mistuning in bladed disks is presented in this paper. An analytical model for a bladed disk was formulated using lumped-mass-beams, and a cracked blade was represented by a beam with a through-crack at the root. Local stiffness reduction due to cracking was incorporated using a flexibility matrix method. The dynamic characteristics of the bladed dis...

To stain C. elegans with antibodies, the relatively impermeable cuticle must be bypassed by chemical or mechanical methods. "Freeze-cracking" is one method used to physically pull the cuticle from nematodes by compressing nematodes between two adherent slides, freezing them, and pulling the slides apart. Freeze-cracking provides a simple and rapid way to gain access to the tissues without chemi...

Fine-grained soils, in particular, expansive soils are prone to cracking. For these soils swelling-shrinking potential is quite high and hence they exhibit adverse affect on overall stability of geotechnical structures. This phenomenon may also be responsible for alteration of various engineering properties of soils such as hydraulic conductivity, water and leachate penetration, solute transpor...

CRACKING THE SCLEROTIC BONE RIM COMPARED TO REAMING +*Elmengaard, B; **Bechtold, JE; *Baas, J; Jakobsen, T; *Søballe, K +*Department of Orthopaedic Surgery, University of Aarhus, Denmark [email protected] INTRODUCTION Revision hip replacement implants have poorer clinical outcome than primary implants. The fixation of the implants is often compromised by the formation of an endosteal scleroti...

Many agencies use the AASHTO Guide for Design of Pavement Structures to design their pavement systems. The limitation inherent in this method is the empirical nature of the decision process, which was derived from a road test conducted almost 45 years ago in Ottawa, Illinois. The newly released Mechanistic-Empirical Pavement Design Guide (MEPDG), based on NCHRP Study 1-37A, has adopted a mechan...

The fundamentally changing nature of fracture in brittle coatings on compliant substrates with diminishing coating thickness is examined. Attention is focused on cracking induced by concentrated loading with a spherical indenter at the top surface. It is shown that the fracture mode undergoes transitions, from top-surface ring cracking around the contact (“thick-coating” region) to bottom-surfa...