An experimental investigation was conducted to study dynamic sliding at high strain rates along incoherent (frictional) interfaces between two identical plates. The plates were held together by a uniform compressive stress, while dynamic sliding was initiated by an impact-induced shear loading. The case of freely-standing plates with no external pressure was also investigated. The dynamic stres...

Currently there are few observations of the urban wind field at heights other than rooftop level. Remote sensing instruments such as Doppler lidars provide wind speed data at many heights, which would be useful in determining wind loadings of tall buildings, and predicting local air quality. Studies comparing remote sensing with traditional anemometers carried out in flat, homogeneous terrain o...

Controlled osmotic lysis (water-washing) of rat liver mitochondria results in a mixed population of small vesicles derived mainly from the outer mitochondrial membrane and of larger bodies containing a few cristae derived from the inner membrane. These elements have been separated on Ficoll and sucrose gradients. The small vesicles were rich in monoamine oxidase, and the large bodies were rich ...

The rarefied flow of nitrogen with speed ratio ͑mean speed over most probable speed͒ of S =2,5,10, pressure of 10.132 kPa into rectangular nanochannels with height of 100, 500, and 1000 nm is investigated using a three-dimensional, unstructured, direct simulation Monte Carlo method. The parametric computational investigation considers rarefaction effects with Knudsen number Kn= 0.481, 0.962, 4.81...

Statistical classification of the Helios solar wind observations into several populations sorted by bulk speed has revealed an outward acceleration wind. The faster is, smaller is this in 0.3 - 1 au radial range (Maksimovic et al. 2020). In article we show that recent measurements from Parker Solar Probe (PSP) are compatible with extension closer to Sun latter classification. For instance well ...

Some typical problems solved by the combination and the complementary use of different investigation techniques such as boroscopy, radar and sonic tests, flat-jack and sonic tests, sonic and radar tomography and others will be presented. Résumé On présente quelques problèmes typiques concernant bâtiments historiques, résolus par l’usage de techniques d'enquête complémentaires, telles que la bor...

In this poster, we describe the design and research phase of a project that aims to create conditions for heightened sonic perception through a mobile phone based software application. The initial design concept is that of an aural architecture for sonic socio-cultural exchange where sonic realities of the everyday are improvised live in a non-linear mode. The design approach adopted is collabo...

In-situ instruments were installed on 12 m high masts at the bow (bow mast) and the crow nest (middle of the ship, ship mast). The principal sensors installed on each mast were: CSAT-3 sonic anemometer and a CS7500 LiCor LI7500 open path H20/CO2 analyzer/hygrometer. The bulk meteorology sensors were mean temperature and humidity sensors in aspirator and 2-D sonic anemometers for mean wind. Data...

Self-similar shock solutions in spherically symmetric polytropic gas flows are constructed and analyzed in contexts of proto-star formation processes. Among other possible solutions, we model a similarity shock across the sonic critical curve with an inner free-fall core collapse and a simultaneous outer expansion of the extended envelope; the separation or stagnation surface between these two ...