Abstract Artesian aquifers offer interesting opportunities for water supply by providing a low-vulnerability groundwater resource that is easily abstracted without any installation of pumps or power costs. However, hydraulic tests are challenging to perform, notably where the piezometric head above ground level with free-flowing wells not equipped valves and open years. This paper describes low...

Quantum-cascade-laser- (QCL) pumped molecular lasers (QPMLs) have recently been introduced as a source of powerful ($>\phantom{\rule{-2pt}{0ex}}1$ mW) tunable THz) narrow-band ($<\phantom{\rule{-2pt}{0ex}}10$ kHz) continuous-wave terahertz radiation. The performance these depends critically on collision physics, pump saturation, and the design laser cavity. Using validated three-level mod...

Highlights • A novel numerical approach has been proposed to retrieve the hydraulic transmissivity of elliptical rock fractures in triaxial shear-flow experiments. The accuracy different methods for estimation evaluated and discussed. electrical analogy are recommended accurate evaluation fractures.

The goal of this research was to compare and evaluate the measurements taken by different instruments regarding alterations while varying ultraviolet (UV)-blocking property cladding material during its usage under real greenhouse conditions. UV-blocking covering material, low-density polyethylene (LDPE), is enriched with additives that are scattered in several layers manufacturing process, resu...

• Semi-analytical solution for radial symmetric groundwater flow with fractal dimension. Solver pumping test in heterogeneous media effective transmissivity distribution. Upscaling of fields following truncated power-law variograms. and routines provided as Python package: AnaFlow. Pumping tests are established characterizing spatial average properties aquifers. At the same time, they promising...

We experimentally determined the hydraulic properties of fractures within various rock types, focusing on a variety Variscan rocks. Flow-through experiments were performed slate, graywacke, quartzite, granite, natural fault gouge, and claystone samples containing an artificial fracture with given roughness. For slate samples, transmissivity was measured at confining pressures, pc, up to 50 MPa,...

A variety of established and experimental geophysical techniques was used to measure the vertical distribution of fracture permeability in a 229-meter deep borehole penetrating schist and quartz monzonite near Mirror Lake, New Hampshire. The distribution of fractures in the borehole was determined by acoustic borehole televiewer and other geophysical logs. Fracture permeability was estimated by...

This study had as its objective the evaluation of the influence of shading screens of different colors on the different microclimate variables in a greenhouse covered with transparent low-density polyethylene (LDPE). The experiment was conducted with five treatments: thermo-reflective screen (T1); a control without screen (T2); red screen (T3); blue screen (T4); and black screen (T5), all of th...