Regarding the issue of intense mining pressure appearing in underlying gateway below remaining coal pillar close-distance seam (the is perpendicular to section pillar), 401 working face used as engineering background. Field measurements, laboratory experiments, numerical simulations, and verification techniques are study abutment pressure's evolution properties plastic zone's propagation laws b...

As parallelism in microprocessors becomes mainstream, new programming languages and environments are emerging to meet the challenges of parallel programming. To support research on these languages, we are developing a lowlevel language infrastructure called Pillar (derived from Parallel Implementation Language). Although Pillar programs are intended to be automatically generated from source pro...

One of the most striking aspects of the cellular pattern within the sensory epithelium of the mammalian cochlea is the presence of two rows of pillar cells in the region between the single row of inner hair cells and the first row of outer hair cells. The factors that regulate pillar cell development have not been determined; however, previous results suggested a key role for fibroblast growth ...

Abstract Pre-excavated withdrawal channel (PWC) is an effective means to shorten the time of fully mechanized working face and improve efficiency, safety, reliability during withdrawal. However, key success method influence mining on stability PWC, taking III32upper1 Zhuzhuang Coal Mine as engineering background. By theoretical analysis numerical simulation, deformation PWC analyzed mechanical ...

Drain current multiplication in vertical MOSFETs due to body isolation by the drain depletion region and gate-gate charge coupling are investigated at pillar thicknesses in the range 200-10 nm. For pillar thickness > 120 nm depletion isolation does not occur and hence the body contact is found to be completely effective with no multiplication in drain current, whereas for pillar thicknesses < 6...

Large deformation control of surrounding rock in deep soft-broken coal roadway has always been a key scientific and technological problem restricting the resources exploitation. Taking gob-side entry driving (GED) isolated face under as research object, prominent difficulties were clarified. Through numerical simulation, evolution laws deviatoric stress plastic zone GED different pillar widths ...

The first synthesis of a monohydroxy pillar[5]arene has been carried out, by controlling the de-O-methylation of per-methylated pillar[5]arene. Using monohydroxy pillar[5]arene as an intermediate, mono-guest-functionalized pillar[5]arene was prepared. It formed a self-inclusion complex in CDCl(3) whereas in acetone-d(6) dethreading of the guest moiety took place.

SU-8 pillar-assisted epitaxial assembly of toric focal conic domains (TFCDs) arrays of smectic-A liquid crystals is studied. The 3D nature of the pillar array is crucial to confine and direct the formation of TFCDs on the top of each pillar and between neighboring pillars, leading to highly ordered square and hexagonal array TFCDs. Excellent agreement between the experimentally obtained critica...

Abstract At present, non-pillar entry protection in longwall mining is mainly achieved through either the gob-side retaining (GER) procedure or driving (GED) procedure. The GER leads to difficulties maintaining roadway both previous and current panels. A narrow coal pillar about 5–7 m must be left GED procedure; therefore, it causes permanent loss of some coal. pre-backfill (GPD) effectively re...