Protein content was one of most important factors and its correlation coefficients with 0 h、24 h dough brightness L* were -0.85 and -0.65, respectively.
蛋白质含量是影响面片色泽 L*的重要因素,与 0 h、24 h 面片的亮度 L*相关系数分别为-0.85 和-0.65。
The silk fabric degummed in a solution of sodaash at 2-3 g/L and sodium oleate at 3 g/L for 1 h yields better whiteness and brightness,less loss in rupture strength and breaking elongation,and a decrease in kinetic frictioncoefficient as well as surface asperity of silk fabric.
Three comprehensive parameters that is reflectional degree X1,brightness rate X2 and diffuse light X3, are put forward in optical space domain of lustre sensation physics.
It is found that UVa-1, dodecanol, radical trapper (0.1% or no) and anti-oxidant(0.5%) in aquatic solution are able to stabilize the brightness of reduced poplar APMP pulps (0.5% NaHB4) efficiently.
Laser is high directionality,brightness and monochromaticity,after laser hardening,the surface structure of band saw's sawtooth is hardenite,the surface hardness can be HV 800~900,hardness penetration is up to 0.3~0.5mm,which greatly increased the wearability of the sawtooth.
The effects of factors such as the synthetic material compositions, ultrasound time and annealed temperature on phosphorescent brightness of sample were studied and the optimum synthetic conditions were determined.
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Brightness and light scattering coefficient were reduced to as much as 25% and 21% compared to the untreated pulps.
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However, after a towstage "Na2S2O4-H2O2" bleaching, the final brightness can reach 70.3% ISO, which is similar to that of the untreated CTMP.
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UV spectroscopy demonstrated that the treatment of kraft pulp with enzymatic preparations containing xylanase facilitated the subsequent removal of lignin and increased the brightness by 5%.
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Manifestations of sudden commencement of a severe magnetic storm of November 20, 2003, in generation of an SC pulse, PSC pulsations, and spatial modulation of the auroral brightness
This article introduces the technology for production extra bright polyester fibre by theBeijing Polyester Fibre Factory. The problems are discussed about improving the brightness of product, decreasing the non-uniformity of fibre diameters, adjusting the temperature of second washing bath and improving the crimping degree of fibre.
This paper summarizes how the dyeing behaviour of polyesters is improved by using SD assistants. The experimental' results show that the SD assistant is a non-ionic organic compound with satisfactory performance.It not only raises the dyeing ability and rate of the polyester, but also endows it with brightness and lustre as well as good levelling and proper colour; while, at the same time, without offecting its dyeing fastness or fiber strength.
Because of the usage of new technology and equipment, Qingdao Textile Machinary Plant has developed Type JT73 Metalic Card Clothing, designed for high quality and production of chemical-fibre carding. It is improved in sharpness, smoothness, brightness and wearability and has the characteristics of lower total hight and tooth depth, smaller top area, but greater breadth-to-length toothdensity ratio. According to the results of comparative tests by some textile mills of Shandong, Hebei and Jangsu Prove...