In the field of deep geothermal energy, mono-tube design will be increasingly used in future, as significant cost savings can expected production boreholes up to depths 6000 m. The previously bolting pipe lengths by means sleeves contributes significantly construction costs. addition, there is an increased risk failure for sleeve bolting, especially if different materials have layers purpose in...

Abstract Fully grouted rock bolting is commonly used in roadway reinforcement mining and tunnelling reinforcement.

Flowering time, the major regulatory transition of plant sequential development, is modulated by multiple endogenous and environmental factors. By phenotypic profiling of 80 early flowering mutants of Arabidopsis, we examine how mutational reduction of floral repression is associated with changes in phenotypic plasticity and stability. Flowering time measurements in mutants reveal deviations fr...

Standing crib supports have been applied in underground mining programs to resist large roof movements and sustain highloads. The strength and deformation capability of these systems has been documented under both laboratory and field conditions. The parameter that has not been examined and is not well understood is the effect that a crib or other types of standing support has on the primary an...

Purpose. To determine the subspecies and variety/sample of garlic with best nutritional value by analy­zing difference between indicators their variation according to time planting (winter or spring). Methods. During 2020–2022, in field conditions (Uman, 48°46’N, 30°14’E) were studied 25 breeding local forms (9 – winter bolting; 9 non- 11 spring, among which samples No. 14, 33, 43 44 determined...

The sensitivity of the Nicotiana plumbaginifolia wild-type and phytochrome B (hlg) mutant to photoperiod was investigated. Leaf number at bolting and rosette-leaf movement were measured under conditions of different light quality and photoperiod. Bolting in wild-type plants was slightly delayed under short days (SD), compared to plants grown under long days (LD). The hlg mutant bolted later tha...

sugar  is very important role  in  humanbeing feed.  for sugar beet  production in tropical area detemine  sowing and  harvesting date is very important . for this reason three sowing date (1 sep, 20 sep and 10 oct) and three harvesting date (15 apr, 15 may and 15 jun) in complete blouck design as factorial with three replication in two year in sarpol area condoucted. results  showed  that  the...

In 1948 roof falls were the number one killer of coal miners in America. While the Bureau of Mines had been formed in 1910 to improve coalmine safety, it had largely focused on explosions, for which technological solutions appeared to exist. Roof falls, by contrast, were not amenable to a technical fix. Beginning in 1948, however, the Bureau discovered roof bolting, which it promoted as a safer...

As the main means of monitoring and early warning of geological disaster, the slope stability analysis is an important part of the geological disaster prevention project. GIS plays an important role in the evaluation of slope stability due to its powerful functions for data processing and spatial analysis. This article discusses the key technology of GIS applied in the slope bolt support design...