Rock bolts ensure structural stability for tunnels and many other underground structures. The pre-load on a rock bolt plays an important role in the structural reinforcement and it is vital to monitor the pre-load status of rock bolts. In this paper, a rock bolt pre-load monitoring method based on the piezoceramic enabled time reversal method is proposed. A lead zirconate titanate (PZT) patch t...

Carrot samples from field research studies of irrigation, fertility, and variety trials must be cleaned prior to weighing and grading. Soil and other foreign materials must be removed, especially for medium– and heavy–textured soils in which a preharvest irrigation is used to loosen the soil prior to hand harvesting. The objective of this project was to develop a low–cost mechanical carrot wash...

A novel device to increase rotational capacity of steel end plate beam–column connections is proposed. By inserting a sleeve with designated length, thickness and wall curvature between the washer, load path bolts can be interrupted, promoting more ductile response. For specific material dimensions, controlled by amplitude value. The develops severe plastic deformations crushed washer at amplit...

Existing research on sentiment analysis mainly uses sentiment words and phrases to determine sentiments expressed in documents and sentences. Techniques have also been developed to find such words and phrases using dictionaries and domain corpora. However, there are still other types of words and phrases that do not bear sentiments on their own, but when they appear in some particular contexts,...

Post-operative trochanteric bursitis is a known complication secondary to the surgical approach in total hip arthroplasty. This phenomenon may be partially attributable to repetitive microtrauma generated when soft tissues rub against implanted hardware. Significant rates of post-operative trochanteric bursitis have been observed following procedures in which a trochanteric fixation device, suc...

Introduction / objectives In the Netherlands bedpans are regarded as semi-critical items unlike Spauldings scheme (1968), where bedpans are categorized as non-critical items. Washer-disinfectors (WD) were used incorrect for a long time. A survey in 1990 showed poor final cleaning and disinfection results. The Dutch Working Party Infection Prevention made guidelines for WD (1998), and in 2006 th...

Spontaneous asymmetric generation of supramolecular chiral fibers was observed in the folding induced self-assembly of a lock-washer shaped foldamer. A secondary nucleation growth mechanism is proposed to explain the observed chiral amplification or deracemization of these supramolecular fibers.