1. The mechanical power output of a synchronous insect muscle was determined by measuring tension as the muscle was subjected to sinusoidal length change and stimuli which occurred at selected phases of the length cycle. The area of the loop formed by plotting muscle tension against length over a full cycle is the work done on that cycle; the work done times the cycle frequency is the mechanica...

A conventional oil and gas well does not have a natural production capacity, which necessitates hydraulic fracturing operation. The effectiveness of the directly impacts economic benefit single well. Among various parameters, including fracture spacing, width, conductivity, half-length is one main influencing factors on productivity horizontal wells. For homogeneous reservoirs, research mainly ...

We present a 74 MHz survey of a 165 deg2 region located near the north Galactic pole. This survey has an unprecedented combination of both resolution (2500 FWHM) and sensitivity ( as low as 24 mJy beam 1). We detect 949 sources at the 5 level in this region, enough to begin exploring the nature of the 74 MHz source population. We present differential source counts, spectral index measurements, ...

The optimum choice of treatment for an intracapsular fracture cannot be based purely on the radiological appearance of the fracture and on the age of the patient. Although these are the main considerations many other factors need to be evaluated for each individual patient. Figure 1 gives a flow diagram which helps to aid decision in treatment. The intracapsular fracture should not be thought o...

The repeated bout effect (RBE) is a phenomenon characterized by less delayed onset muscle soreness (DOMS) and torque deficit after the second of 2 separate eccentric exercise bouts. Previous investigators have reported that shifting of optimum angle after an initial bout of eccentric exercise mediates the RBE. We hypothesized that an RBE for elbow extensor exercise occurs after an initial bout ...

In this study, the procedure of sintering and heat treatment of Al2O3-SiC-MgO nanoceramic was considered. For improving the densification behavior and mechanical properties, experimental variables, such as sintering temperature and duration, which significantly influence the fracture performance of this nanocomposite body, were optimized. To obtain desired properties, several tests were conduct...