This paper presents a prototype of a silent, remotely-operated microwave drill (MWD) for concrete. The MWD concept, based on the induced thermal-runaway instability and hotspot formation effects, is pushed here beyond the limit of quarter-wavelength drilling depth. This extension is achieved by a slow mechanical rotation (~20-rpm) of the entire coaxial structure penetrating as a hollow reamer i...

Conventional and conservation tillage systems can alter soil aggregation total labile organic matter (SOM) contents. This study aimed to determine the degree of aggregation, quantify carbon (TC), permanganate oxidizable (POXC), light (LOM), potentially mineralizable (CO2-C) contents in soils aggregates, assess quality indexes at sites under conventional Cerrado region Minas Gerais State, Brazil...

Nitrogen plays a crucial role in limiting plant growth and determining net primary productivity forest ecosystems. However, variations influencing factors of soil nitrogen distribution on the aggregate scale pure mixed Chinese fir (Cunninghamia lanceolata (Lamb.) Hook) plantations remain unclear. This study aimed to explore how composition, geometric mean diameter (GMD), weight (MWD), total (TN...

The molecular weight distribution (MWD) and its parameters are of the fundamental importance in the characterization of polymers. Therefore, the development of techniques for faster MWD determination is a relevant issue. This paper aims at implementing one of the relaxation models from double reptation theory proposed in the literature and analyzing the numeric strategy for the evaluation of th...

Background—The maximal walking distance (MWD) performed on a treadmill test remains the “gold standard” in estimating the walking capacity of patients who have peripheral arterial disease with intermittent claudication, although treadmills are not accessible to most physicians. We hypothesized that global positioning system (GPS) recordings could monitor community-based outdoor walking and prov...