Microscopic roughness is inevitable on the gear meshing surface, which also a key parameter affecting dynamic response. The surface exhibits self-affine characteristics across multiscales. To explore influence of fractal topography vibration amplitude system under different rotational speeds and loads, an experimental setup spur transmission devised. dimension are calculated by power spectral d...

The next generation of ultra-high energy cosmic ray observations will require large detector arrays to achieve statistics. In order realize next-generation large-scale arrays, the Cosmic Ray Air Fluorescence Fresnel lens Telescope (CRAFFT) project is developing a low-cost simple fluorescence (FD). structure CRAFFT reduce cost about 1/10 current FD. We also aim fully automated observation system...

nowadays, establishment and maintenance of turfgrasses due to high water requirements was faced with serious doubts. hence, screening of drought resistance native grasses, and introduces them as turfgrass is not only effective in reduction of water usage but can also preserve plant gene pools of the country. in the present experiment, wheat grass and bromus as two native grasses were compared w...

This paper presents a comparative study on precision metrology systems such as Coordinate Measuring Machine (CMM), 3-Dimensional Scanning (3DS) and Computed Tomography (CT) for polymer additive manufacturing. A special test sample was designed manufactured by Fused Deposition Modeling (FDM) Selective Laser Sintering (SLS) AM systems. The parts were then measured three different the results comp...

Agencies have long used subjective roughness ratings from panels of users to inform policy development on road maintenance strategies. The commoditization electronics motivated the more objective, automated, and cost-effective measurement technologies. Consequently, there has been an explosion ensemble measurements using smartphones or connected vehicles. Nevertheless, agencies no means relatin...

Transfusion-associated bacterial infections continue to occur which may be due the formation of biofilms on inner surface blood bag. Plasticized poly (vinyl chloride) (p-PVC) platelet storage bags in three roughness states (rough, smooth and flattened) were used determine effect that a conditioning film (CF) human plasma had properties its interaction with Staphylococcus epidermidis Serratia ma...

From September 2019 to August 2020, the author served as a senior economist on Council of Economic Advisers, government agency charged with providing economic analysis and advice President United States officials. Working yielded many useful lessons how anesthesiologists can influence healthcare policy. First, because has wide latitude over areas health policy that directly impact patient care ...

Abstract Here we study how graphene oxide affects silica aerogels and their physical mechanical properties by examining volume shrinkage, pore volume, surface area compressive strength of these composite aerogels. Composite were made through adding different amount (GO) to sodium silicate precursor using ambient pressure drying method. Additionally, the chemical composition was determined X-ray...

Corrosion morphology is a key factor that influences the reliability and service life of structure. As most structures under stress corrosion, there great need to understand effect on formation conditions different morphologies. This paper introduces numerical method simulate evolution surface The results indicate corroded will become rougher sharper with an increase in stress, as consequence, ...

In a plot to improve the performance of steel mechanical parts subject aggressive friction solicitations, three batches deposits TiN and CrN layers on substrates with two different roughnesses have been obtained using reactive DC magnetron sputtering. The present study was conducted determine effect varying TiN/CrN multilayer coatings thickness (varying modulated period ? interlayer thickness),...