Steel arch-rectangular support has a wide range of applications in Polish coal mines due to its asymmetrical shape. The frame an arched outline on one side the wall, while opposite it is rectangular. As result, ideal for securing set up room and recovery room. It can also be successfully used secure three-way intersections underground workings. To large extent, however, importance these advanta...

The climate crisis and energy price increases make supply a crucial parameter in the design of greenhouses. One way to tackle both these issues is local production from renewable sources. Since permitted photovoltaic power installation on greenhouse roof limited by need for an adequate amount photosynthetically active radiation at crop level, necessity designing hybrid system combining differen...

This paper presents an overview of observed distresses on low slope roofing systems collected for the Building Envelope Life Cycle Asset Management (BELCAM) project. The data include over 14,000 visible distresses from 600 roofs from seven different climatic regions across Canada. The distresses encountered for built up roofs, modified bituminous roofs and a limited number of single-ply roofing...

In order to solve the water sealing problem of soil between pipes of long distance curved pipe-jacked technology, Freeze-Sealing Pipe Roof (FSPR) as an innovative pre-supporting method in tunnel engineering is being applied to the Gongbei Tunnel in the Hong Kong-Zhuhai-Macau Bridge. The definition of FSPR is that large diameter steel pipes are laid out in a circle around the cross section of tu...

BACKGROUND Characterization of the insertion site anatomy in anterior cruciate ligament reconstruction has recently received increased attention in the literature, coinciding with a growing interest in anatomic reconstruction. The purpose of this study was to visualize and quantify the position of anatomic anteromedial and posterolateral bone tunnels in anterior cruciate ligament reconstruction...

The evaluation of the roof collapse in tunnels or cavities remains one most complex issues geotechnical engineering. Taking detaching surface tunnel as an orthotropic weak interlayer, analytical approach for determining limit range considering arch effect is presented this paper by variation calculus. A discontinuity criterion moving from anisotropic proposed present authors applied to interlay...

The anatomy of the cubital tunnel and its relationship to ulnar nerve compression is not well documented. In 27 cadaver elbows the proximal edge of the roof of the cubital tunnel was formed by a fibrous band that we call the cubital tunnel retinaculum (CTR). The band is about 4 mm wide, extending from the medial epicondyle to the olecranon, and perpendicular to the flexor carpi ulnaris aponeuro...

In a study by Björksten et al. 1994 [1], approximately 60 % of female laboratory technicians who pipetted more than 300 hours per year, reported hand ailments. Buckle and David 1997 [2] reported that approximately 90 % of participants complained of problems in the hand area following continuous pipetting for 60 minutes. The possible health consequences of such strain in the laboratory are obvio...

This study compared dispersion calculations using a street network model (SIRANE) with results from wind tunnel experiments in order to examine model performance in simulating short-range pollutant dispersion in urban areas. The comparison was performed using a range of methodologies, from simple graphical comparisons (e.g. scatter plots) to more advanced statistical analyses. A preliminary ana...