Large amounts of hydrocarbon reserves are trapped in naturally fractured reservoirs which arechallenging in terms of accurate recovery prediction because of their joint fabric complexity andlithological heterogeneity. Canada, for example, has over 400 billion barrels of crude oil in fracturedcarbonates in Alberta, most of this being bitumen of viscosity greater than 106 cP in the GrosmontFormat...

In [4], we introduced the alternating greedy expansion of integers, which turned out to be useful in several left-to-right algorihms in cryptography. In this paper, we collect known results about this alternating greedy expansion and complement it with other useful properties and algorithms. In the second part, we apply it to give an algorithm for computing a joint expansion of d integers of mi...

The structure-borne noise while the vehicle passing across bridge expansion joint is main source of urban noise. In order to control this pollution, 20 bridges including three types typical joints in Ningbo City were selected, and noises measured passed joints. results are expressed by Z-weighted sound pressure level, which kept effect low-frequency Then influence factors discussed. show that: ...

articular cartilage, the load-bearing tissue of the joint, has limited repair and regeneration ability. the scarcity of treatment modalities for large chondral defects has motivated researchers to engineer cartilage tissue constructs that can meet the functional demands of this tissue in vivo. cartilage tissue engineering requires 3 components: cells, scaffold, and environment. owning to their ...