materials exhibit significant creep behavior at temperatures above 40% of their absolute melt temperature. lead, tin and their alloys are such materials which experience significant creep behavior in room temperature. one of the most important applications of the tin-lead alloys is soldering electronic circuits in electronic industry, and for lead are isolation walls and wet batteries. room tem...

We extend the model-free data-driven paradigm for rate-independent fracture mechanics proposed in Carrara et al. (2020), to rate-dependent and sub-critical fatigue. The problem is formulated by combining balance governing equations stemming from variational principles with a set of data points that encodes constitutive behavior material. solution found as point best satisfies meta-stability con...

background: natural radionuclides are always present in the environment. human exposure to the background radiation is inevitable. it is therefore important to assess health risk associated with these radionuclides. materials and methods: the distribution of natural radionuclides 238u, 232th and 40k in soil samples collected from all the twenty (20) local governments headquarter areas in ogun s...

In an attempt to control rapid growth in hospital costs, beginning in the mid-1970s several states implemented rate-setting programs to regulate hospital payments. In seven states, rate-setting was in effect for a substantial period of time (14 years or more). While most of these programs were discontinued by the mid-1990s, two are still active. In five of the seven states, the rates of increas...