Mine maps are extremely useful resources for determining regional and local hydrogeologic conditions as well as mineral resources and reserves. Users include mining companies, property owners concerned about risk factors related to mining activities, government inspectors, engineers and planners. Hundreds of thousands of mine maps exist yet how many are collected or cataloged by libraries or archives? This paper examines the characteristics of mine maps, how they are published, their value, and describes some efforts...

Attention to infrastructure issues has increased in recent years. The Intermodal Surface Transportation Efficiency Act of 1991 (ISTEA) and its reauthorization in the Transportation Efficiency Act of 1998 (TEA 21) have focused stronger attention on the need to encourage innovation, identify and facilitate partnerships, identify core research and provide assessment criteria. This has resulted in increased awareness that information is key to accomplishing these goals. The importance of international materials is now seen as critical...

We greatly expand the space of tractable term-structure models. We consider one example that combines positive yields with rich volatility and correlation dynamics. Bond prices are expressed in closed form and estimation is straightforward. We find that the early stages of a recession have distinct effects on yield volatility. Upon entering a recession when yields are far from the lower bound, (i) the volatility term structure becomes flatter, (ii) the level and slope of yields...

La caldera dei Campi Flegrei è un campo vulcanico che ha prodotto almeno 70 eruzioni negli ultimi 15,000 anni [Smith et al., 2011; Bevilacqua et al., 2016]. Episodi di lento sollevamento e abbassamento del terreno, chiamati bradisismo, caratterizzano la dinamica recente del sistema [Acocella et al., 2014; Bevilacqua et al., 2020]. Negli ultimi decenni ci sono state due crisi bradisismiche, nel 1969/1972 e nel 1982/1984, con un sollevamento di 1.70 m e 1.85 m, rispettivamente....

The current study investigated the effect of a high-amylase corn silage on lactational performance, enteric methane (CH4) emission, and rumen fermentation of lactating dairy cows. Following a 2-wk covariate period, 48 Holstein cows were blocked based on parity, days-in-milk, milk yield (MY), and CH4 emission. Cows were randomly assigned to 1 of 2 treatments in an 8-wk randomized complete block design experiment: (1) control corn silage (CON) from an isogenic corn without a-amylase trait and...

Asparagopsis taxiformis (AT) is a source of multiple halogenated compounds and, in a limited number of studies, has been shown to decrease enteric CH4 production in vitro and in vivo. Similarly, oregano has also been suggested as a potential CH4 mitigating agent. This study consisted of 2 in vitro and 2 in vivo experiments. Experiment 1 (Exp. 1) was aimed at establishing the effect of AT on total gas production and CH4 emission in vitro....