By work of Gallardo-Kerr-Schaffler, it is known that Naruki's compactification the moduli space marked cubic surfaces isomorphic to normalization Koll\'ar, Shepherd-Barron, and Alexeev parametrizing pairs $\left(S,\left(\frac{1}{9}+\epsilon\right)D\right)$, with $D$ sum $27$ lines on $S$, their stable degenerations. In current paper, we show assumption not necessary as prove this KSBA smooth. Additionally, a fine space. This done by studying automorphisms $\mathbb{Q}$-Gorenstein obstructions...

Abstract Detonation velocity of explosives including single compounds and mixtures may be calculated by means a simple empirical equation D = aQ½ + bw ∫0, 67.6, b 243.2; adiabat exponent Γ r Γ0 (1 − e−0.5461.). Thus, the detonation pressure can estimated from theoretical P ∫0D2/(1 Γ). Q is heat detonation, w potential energy. exponent, ∫0 initial density. The agreements between results experimental data are reasonably satisfactory.

Influences of nature Particle, size, grain shape and fineness modulus fine aggregates on the 3D printing performance cement-based mortar were investigated. Results showed that working is not only dependent aggregate, but also gradation size aggregate. And mechanical properties are increasing with increase Mx in same test condition. The research shows it effective to choose different materials for design requirements, fluidity must be decreased under assuring construction quality pumpability...

Industrial production of apparel consumes large quantity freshwater and discharges effluents that intensify the problem shortage water pollution. The industrial footprint (IWF) a piece includes (WF) fabric, accessories (e.g. zipper, fastener, sewing thread) processes. objective this paper is to carry out pilot study on IWF accounting for three kinds typical zipper (i.e. metal polyethylene terephthalate (PET) polyoxymethylene copolymer (Co-POM) zipper) are commonly used production. results...

Vanadium self-powered neutron detectors (SPNDs) are widely used as in-core unmovable in nuclear power plants to continuously carry out data monitoring of flux and power. In this study, a theoretical calculation model is presented for determining the signal current thermal sensitivity vanadium SPNDs. First, physical characteristics reaction mechanisms SPNDs irradiated with neutrons were discussed thoroughly. Then, computational approach determine SPND based on Monte Carlo method without...

Abstract The complex structure and multiple controllability metrics of the new power system require a comprehensive assessment approach. We propose method based on Lagrangian function, analyzing key factors that influence controllability. Our index includes distributed supply utilization rate, energy storage station charge state, factor, voltage offset. Using Lagrange shadow price theory, we construct guideline layer treating bottom indexes as constraints. formulate an optimization function...

This paper introduces a new fiber imaging system that can automatically capture series of microscopic images in the longitudinal view to form panoramic image long-fiber segments for reliable identifications blended fibers. The shows thumbnails long fibers without missing or duplicating any on sample slide. Firstly, slide is scanned quickly X- and Y-axes sequential register locations each image. Secondly, formed by stitching sub-images together according their positions. Thirdly, analyzed...

Raw wool contains high percentage by weight of natural contaminants. It is usually treated a scouring process in the first stage textile processing. Wool consumes large quantities fresh water and produces concentrated effluent with very oxygen demand, aggravating resource shortage environmental impacts. Water footprint (WF) multidimensional indicator that shows consumption volumes source polluted type pollution. This study discusses impacts assessment based on WF theory. Through cases study,...

Purpose – Smooth appearance of fabrics after ironing with steam, soleplate, speed and their interactions cannot be studied using household machines such as hang steamer flatiron. The purpose this paper is to present the design verification a simple, low-cost test platform based on fabric materials hang-ironing factors includes temperature, humidity, (time). Design/methodology/approach This achieves adjustable stable steam flow rate, enabling any temperature soleplate below 200°C. Moreover,...

Based on the analysis of stripes fiber surfaces, a new method for cotton and ramie identification is introduced in this paper. The surface were extracted by segmentation, edge detection, thinning, then they orthogonally projected along curving skeleton fiber. In addition, six characteristic parameters obtained, based maximum probability, equations established probability distribution curves parameters. Finally, weight coefficients obtained from self-adapting tests. experiments showed that...

Abstract Thermodynamic parameters of detonation products were calculated using functions based on the enthalpy H 0 − . The results are compared to experimental data and discussed with respect other methods. Within same temperature range accuracy was considerably improved. coefficients for thermodynamic given in an appendix.

This study applies cluster analysis to identifying two frequently blended fibers, lyocell and cotton, based on the six characteristic parameters extracted from automatic fiber identification system presented in previous publications. Two independent are first derived by using factor analysis. Second, a probability density distribution map of indirect is established through sample observations. Finally, clusters cotton fibers segmented according contour lines distance. The experiment showed...

3D printing is a new study direction of building method in recent years. The applicability equipment and cement based materials analyzed, the influence operation parameters on effect explored this paper. Results showed that appropriate range parameters: print height/nozzle diameter between 0.4 to 0.6, speed 4-8 cm/s with pumpage 9 * 10 -2 m 3 / h.

The effects of fabric parameters and initial moisture content in dryer on the smoothness appearance woven cotton fabrics have been determined. In this study, 11 kinds were selected to evaluate their after drum drying. results indicated that parameters---surface density, thickness warp density--- had a certain correlation with appearance, which wasn’t significant. affected positively. With increasing content, grade improved difference between max mini is about 0.5grade. This study can provide...

Abstract Generating a large number of representative load sequence scenarios is crucial for evaluating the supply-demand balance, economic efficiency, and reliability power systems, which have high penetration rate new energy. Current scenario generation methods certain limitations, such as need extensive historical data inability to reflect relatively fixed patterns sequences over medium long term. To address these issues, this paper proposes method according dual-layer Markov chain Monte...