Myxococcus xanthus is a bacterium capable of complex social organization. Its characteristic social ("S")-motility mechanism is mediated by type IV pili (TFP), linear actuator appendages that propel the bacterium along a surface. TFP are known to bind to secreted exopolysaccharides (EPS), but it is unclear how M. xanthus manages to use the TFP-EPS technology common to many bacteria to achieve i...

introduction: the growth of agricultural production and natural resources are from primary objectives of any political system, because this section has a vital role in providing food security. according to the production theories, production growth will come from two sources; more use of production factors within the framework of existing technologies and second, with using more advanced and mo...

Health is a very essential component of human development because healthy workers are more productive. Using the conventional growth accounting method the study first estimates the aggregate TFP growth for the Indian economy. It examines the impact of health on TFP growth for the Indian economy. It has been observed that TFP growth in India has been fluctuating in nature. Granger Causality test...

Tungsten functional paper (TFP), which contains 80% tungsten by weight, has radiation-shielding properties. We investigated the use of TFP for the protection of operators during interventional or therapeutic angiography. The air kerma rate of scattered radiation from a simulated patient was measured, with and without TFP, using a water-equivalent phantom and fixed C-arm fluoroscopy. Measurement...

This paper develops a model in which measured total factor productivity (TFP) is endogenously determined, in order to quantitatively explain the following three facts of the Japanese growth miracle between 1956 and 1973. First, the growth rate of GDP per unit of labor in the second half of this period was 7.9 percent while in the first half it was only 5.5 percent. Second, the rate of return to...