硫酸盐

Through the experiments on hydration of AH in the following sulphate（Li_2SO_4、MgSO_4 、 Al_2(SO_4)_3 、MnSO_4 、CuSO_4 、CoSO4 、CdSO_4 、ZnSO_4 、NiSO_4 、FeSO_4）, dissoluble sulfate hydrate origining from hydration process of AH affects it's hydrous rate, hydrous rate of AH does not connect with Z/R of cation in stimulation, theory that Z/R affect hydrous rate of AH does not exist. Third, hydration of AH in dissoluble sulfate complies with dissolve-nucleate -grow theory, concentration of Ca~2+ from dissolving of CaSO_4 is higher than one of CaSO_4·2H_2O, calcium sulphate dihydrite gets a motivity of crystallization. dissoluble sulfate takes the following function: double-salt or dissoluble sulfate hydrate from hydration of AH in it becomes heterogeneous particle and a kind of nucleation catalyzer, and reduces surface barrier when DH becomes crystal because the crystal of DH precedently appears in uneven place. Results indicate hydration of AH does not conform with double-salt theory, but it conform with this mechanism: dissolve-nucleate-grow, formation of DH is an uneven nucleation and crystalizaion process.

通过对CaSO_4在Na_2SO_4 、K_2SO_4 、Rb_2SO_4 、Cs_2SO_4 、(NH_4)_2SO_4溶液中水化过程，以及CaSO_4·2H_2O、CaSO_4与以上硫酸盐反应速度、产物的研究，说明复盐理论不正确；CaSO_4在（Li_2SO_4、MgSO_4 、 Al_2(SO_4)_3 、MnSO_4 、CuSO_4 、CoSO_4 、CdSO_4 、ZnSO_4 、NiSO_4 、FeSO_4）溶液中水化，水化过程中硫酸盐水合物的析晶影响着无水硫酸钙水化，与激发剂阳离子Z/R值大小无关，阳离子的Z/R参数影响水化率的规律并不存在； 3、无水硫酸钙在可溶性硫酸盐中的水化按照溶解-成核-生长理论进行，CaSO_4达到溶解平衡时Ca~2+的浓度大于CaSO_4·2H_2O溶解平衡的Ca~2+的浓度，CaSO_4·2H_2O获得结晶的驱动力，可溶性硫酸盐起到形成晶核的作用：水化过程与CaSO_4生成复盐或析出水合物所形成的细小物相，作为异质微粒使母相中存在不均匀性，这些不均匀性有效地降低成核时的表面能位垒，使CaSO_4·2H_2O晶核优先地在这些具不均匀性的地方形成，因此这些物质起成核催化剂作用。

The conclusions of risk assessment and risk management suggestions for sulfites2.1 The results of risk assessment for sulfites2.1.1Sulfur dioxide,potassium metabisulphite,sodium metabifulphite,sodium sulfite,sodium hydrogen sulfite,sodium hyposulfite are Sulfities pemitted to use in China.

亚硫酸盐的危险性评估结论及危险性管理措施2.1亚硫酸盐的危险性评估结论2.1.1我国允许使用的亚硫酸盐包括二氧化硫、焦亚硫酸钾、焦亚硫酸钠、亚硫酸钠、亚硫酸氢钠、低亚硫酸钠等。

In addition, oxygen delignification and reinforcedoxygen-delignification of RDH kraft pulp and conventional kraft pulp, effects of various pretreatment methods on oxygen delignification efficiency, bleachability of RDH pulps and conventional kraft pulps and improved hydrogen peroxide bleaching with additives were also researched.

此外，论文还对桉木常规硫酸盐浆和RDH硫酸盐浆的氧脱木素、强化的氧脱木素、各种预处理方法对氧脱木素效果的影响以及它们各自的漂白性能进行了研究；对桉木硫酸盐浆的H〓O〓漂白时，各种助剂对H〓O〓漂段的改善效果进行了有关的研究和探讨。

At present ,HEBEI JIHENG GROUP CO.,LTD produce persulphate salts over more than 20.000 mts, it also is the main manufacturer of drawing up the stardard of persulphate. enjoyed a high reputation in the industry.

目前河北冀衡集团年生产过硫酸盐2万吨，是中国最大的过硫酸盐生产基地，也是中国过硫酸盐国家标准的主要起草单位，在行业享有极高声誉。

HEBEI JIHENG GROUP CO.,LTD produce persulphate salts over more than 20.000 mts per year, she also is the main manufacturer of drawing up the stardard of persulphate. enjoyed a high reputation in the industry.

目前河北冀衡集团年生产过硫酸盐2万吨，是中国最大的过硫酸盐生产基地，也是中国过硫酸盐国家标准的主要起草单位，在行业享有极高声誉。

Semibleached alkaline sulfite-anthraquinone larch pulpis used as a substitute for the mixed long fiber pulp of NBKP and NBSP in newsprint furnish.

研究了以半漂落叶松碱性亚硫酸盐-蒽醌法浆代替针叶木漂白硫酸盐浆与白松酸性亚硫酸盐浆的混合长纤维浆料配抄新闻纸的情况。

The results of spectrum analysis show that, the absorption of sulfite cooking liquor during 460nm-580nm visible wavelength mainly comes from sulphonated lignin while saccharide and water in cooking liquor has little.

通过对亚硫酸盐和硫酸盐纸浆卡伯值光谱法在线测量机理的研究发现，亚硫酸盐法蒸煮液在460nm-580nm的可见光波段内的吸收主要是来自其中的磺化木素。

The influence of environmental factors with different sulfate types (Na2SO4, MgSO4) and temperatures (5, 20 ℃) on various kinds of sulfate attack of cement mortars was studied, and the special environmental factors for the formation of thaumasite were confirmed.

研究了硫酸盐种类(Na2SO4，MgSO4)及温度(5 ℃，20 ℃)等影响因素对水泥砂浆硫酸盐侵蚀类型的影响，以明确碳硫硅酸钙型硫酸盐侵蚀的特性环境条件。

The influence of environmental factors with different sulfate types (Na2SO4,MgSO4) and temperatures (5,20℃) on vari- ous kinds of sulfate attack of cement mortars was studied,and the special environmental factors for the formation of thaumasite were confirmed.

研究了硫酸盐种类(Na_2SO_4，MgSO_4)及温度(5℃，20℃)等影响因素对水泥砂浆硫酸盐侵蚀类型的影响，以明确碳硫硅酸钙型硫酸盐侵蚀的特性环境条件。

The test result of a sulphate resistance agent for the concrete used on canal system is introduced herein.

介绍了一种用于渠系混凝土的抗硫酸盐侵蚀剂的室内试验研究结果，试验内容包括单纯硫酸盐条件下的侵蚀试验、硫酸盐结合C l-和Mg2+条件下的侵蚀试验以及干缩循环条件下的侵蚀试验。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。