Hydraulic fracturing is an important method of reservoir stimulation in the exploitation of geothermal resources, and conventional and unconventional oil and gas resources. In this article, hydraulic fracturing experiments with shale, sandstone cores (from southern Sichuan Basin), and granite cores (from Inner Mongolia) were conducted to investigate the different hydraulic fracture extension pa...

Hydraulic activity refers to a property most familiar when discussing hydraulic cement such as ordinary portland cement (OPC). ASTM C125-15a defines hydraulic cement as “a cement that sets and hardens by chemical reaction with water and is capable of doing so under water.” That is, hydraulic cements, including SCMs that have hydraulic properties, react with water to harden, and that hardening p...

Abstract There are numerous words across languages expressing similarity or indistinguishability. In this paper, three types of expressions in German and English compared— ähnlich / similar , so/such gleich same . They differ a number respects, one them being gradability: While ähnlich/similar gradable, as well gleich/same not. The analysis paper starts from the so demonstrative (instead identi...

The Hydraulic excavator machines are heavy duty earth mover consisting of a boom, arm and bucket. It works on principle of hydraulic fluid with hydraulic cylinder and hydraulic motors. The Hydraulic excavator backhoe operation require coordinated movement of boom, arm and bucket to control the bucket tip position by following a desired trajectory and to use the excavator machines effectively in...

abstract many studies have been conducted on the characteristics of hydraulic jump over gradually expanding cross sections, but comparatively few have been carried out on basins with convergent wall. in the present research, the hydraulic jump characteristic of the stilling basin with convergent wall has been investigated. the main objective of this research is evaluation of conjugate depths ra...

[1] In the past, texture-based classification of soils has been used for grouping soils in variably saturated water flow and solute transport studies. Classification of soils becomes especially important for large-scale studies where the spatial and temporal variability in the hydraulic properties of soils exceeds the field sampling capabilities. Although soiltexture-based classification has be...

abstract p u rpose: this study aimed to correlation between the grading stenosis and the start back screening tool (sbst) in patients diagnosed with lumbar central canal stenosis (lccs). methods: in a prospective clinical study, a total of 269 patients with lccs were asked to respond to the questionnaire at their first visits. grading of lccs on mri was determined and also the severities of the...

the purpose of this research is to prioritize the indexes of discretion, heterogeny and autogeny factors in order to analyze and evaluate their readiness for ideal situation of central bank of the islamic republic of iran (cbi). this research is an exploratory kind and in terms of method is a survey kind. the data collection tool is questionnaire. after two delphi cycles, in final questionnaire...