Dry density and water content are two important factors affecting the degree of soil compaction. Conventional methods such as the sand cone test and the plate load test are used to measure such properties for evaluating the degree of compaction and the stiffness of soil in the field. However, these tests are generally very time-consuming and are inherent with some errors depending on the operat...

Recent advances in additive manufacturing (AM) technology provide the potential for on-demand and rapid production of spare parts during urgent repair times. Recently, big oil gas companies have shown early progress using specific heat exchangers, downhole cleanout tool nozzles, offshore risers, turbine subsea chemical stick injection tools. Despite mentioned progress, current adoption level in...

Bloodstains are often encountered at scenes of violent crime and have significant forensic value for criminal investigations. Blood is one of the most commonly encountered types of biological evidence and is the most commonly observed fingerprint contaminant. Presumptive tests are used to test blood stain and blood stained fingerprints are targeted with chemical enhancement methods, such as aci...

Determining the compressive strength of concrete is important in all phases construction and diagnosing technical condition existing reinforced buildings facilities during their service. In this article, author presents experimental results from research conducted over 6 years. The following non-destructive methods were used tests—elastic rebound, ultrasonic, SonReb destructive methods, latter ...

Developing rugged transistors requires careful consideration of the HBT’s collector design. In this work we present a test methodology for high-volume, in-line measurement of device ruggedness. This method is useful not only when developing new epitaxial structures for HBT devices, but also allows in-line monitoring of the device ruggedness for possible deviations due to epitaxial or manufactur...