柠檬酸

The best performance for Sw: 1 Al' mole ratio calcination temperature, curing time 650 qC Rao 3 h: citric acid catalytic Taiwan into the best condition of isooctyl catalyst for: 1 (2%), the total alcohol acid mellowly Moore j l: 5 than when asked 2 h.

焙烧温度650 qC。焙娆时间3 h：催化台成柠檬酸异辛酯的最佳条件为：催化剂用量1 2％，酸醇摩尔比l：5。

Uses: Suitable for gas adsorption, the decolorization and refining of catalyst carriers and monosodium glutamate, citric acid and oil; used in catalyst of phosgene synthesis; as catalyst carrier for high mercury chloride, vinyl acetate synthesis, etc.

用途： 适用于气相吸附，催化剂载体和味精、柠檬酸、油类的脱色、精制以及光气合成用的触媒、氯化高汞、醋酸乙烯等合成工艺的触媒载体。

A preparation method of nickel oxide-base cathode of fused carbonate fuel cell is to select alkali earth metal oxide, transition metal oxide and rare-earth metal oxide, mix with carbonyl nickel powder in the proportion of 0.01-15.00 mol%, add assistant and mix even into a slurry; after the slurry is formed into a biscuit by doctor-blade casting, sinter it into a multi-porous nickel plate; dissolve lithium nitrate and cobaltous nitrate with mole ratio of Li:Co-1:1 and citric acid or PVA in the distilled water to make a solution with Li of 0.00-0.5 mol/L; immerse the multi-porous nickel plate or nickel oxide plate in the solution, keep for 10-60 minutes under vacuum below 200 millibar, then dry in an oven at 75 degrees centigrade further transfer to a crucible electric furnace preheated 650 degrees centigrade for keeping the temp.

要約 熔融碳酸盐燃料电池氧化镍基阴极的制备方法属于燃料电池领域。选取碱土金属氧化物、过渡金属氧化物和稀土金属氧化物，按0.01－15.00mol％的比例与羰基镍粉混合，加入助剂，混合均匀成浆料；混合浆料流延成型为素坯后烧结为多孔金属镍板；将摩尔比为Li∶Co＝1∶1的硝酸锂和硝酸钴以及柠檬酸或聚乙烯醇溶于蒸馏水中，制成为0.005－0.5mol/L的溶液；将多孔金属镍板或氧化镍板浸入溶液中，在真空度低于200毫巴下保持10－60分钟；置于75℃的烘箱中烘干，转移至预热到650℃坩埚电炉中保温1－10小时；将此过程重复一次或多次即可。

No significant change was observed in the presence of other nutrients. The volatile compounds of Opuntia Milpa Alta was separated and identified by GC-MS.

比较了几种抗氧化剂作用效果，进行正交优化试验，确定在仙人掌的热烫护绿液中加入100μg/g的Zn2+、40μg/g的Cu2+、0.075%Vc、0.025%柠檬酸，护色20min，护绿效果好。

The parameters for blanching and green- protecting of Opuntia Milpa Alta juice were studiedusing single factor and orthogonal experiment. The results showed that 1.5 times boiling blanching for 1.5min, and the centretemperature reached 93 ℃,not only inactivated the peroxidase, but also increased thecontents of total polyphenolics and soluble solid in the Opuntia Milpa Alta juice, and a well green- pro-tecting effect could be obtained by adding 100 μg/g Zn2+, 40 μg/g Cu2+,0.075 %Vc,0.025 % citricacidin blanc...

通过单因素实验和正交实验，对米邦塔仙人掌制备绿色蔬菜汁饮料的热烫护绿工艺条件进行了研究，结果表明：采用1.5倍体积沸水热烫1.5min，中心温度达93℃，可使过氧化物酶的活力基本丧失，也可提高仙人掌汁中总酚和可溶性固形物的含量，同时在热烫护绿液中加100μg/g的Zn2+、40μg/g的Cu2+、0.075%Vc、0.025%柠檬酸，护色20min，护绿效果好。

Colloidal gold is reductively prepared by sodium citrate-tannin, the size and morphology of gold is characterized by UV-visible spectrum, the stability of colloidal gold is evaluated by the zeta potentials. MMD is used for the development of fresh sweat and oil fingerprint on glass.

采用柠檬酸钠－鞣酸还原法制备出胶体金，并用紫外可见分光光谱对胶体金粒径及形态进行了评价，结合Zeta电位分析了胶体金的稳定性，利用多重金属沉积法对玻璃表面新鲜的汗潜、油潜手印进行了显现。

Firstly, the effects of electrodeposition parameters such as the electric current density, the initial molality of ZnSO4/Na2SeO3, the pH value, the quality of sodium citrate, the time of electrodeposition, the temperature and the ultrasonic power are discussed.

讨论了电流密度、初始浓度比c(ZnSO4：c(Na2SeO3)、pH值、柠檬酸钠加入量、电沉积时间、电沉积温度以及超声功率对镀层的影响。

The present invention adopts the technical proposal of adopting ZSM-5 mesoporous molecular sieve raw powder with a silicon-aluminum mol ratio SiO2Al2O3 of 20 to 1000 and a weight percentage of 20 to 100 percent as well as at least one caking agent selected from SiO2, clay and Al2O3 to extrude, tablet or spray into shape; then treating for 1 to 8 hours by 0.1 to 3 mol/l of at least one ammonium liquor from ammonium nitrate, ammonium chloride or ammonium sulphate or 0.1 to 8.5 mol/l of at least one acid liquor from muriatic acid, nitric acid, vitriol or acetic acid under a temperature of 20 to 90 DEG C; then using steam to treat for 2 to 15 hours under the temperature condition of 400 to 700 DEG C; using a liquor of 0.1 to 3mol/l selected from at least one of oxalic acid, citric acid or maleic acid under a temperature condition of 20 to 90 DEG C to dip for 2 to 5 hours to obtain the modified molecular sieve catalyst, thus better solving the problems.

本发明通过采用硅铝比SiO2/Al2O3为20～1000重量百分比计20～100％的ZSM-5介孔分子筛原粉与余量的选自SiO2、粘土或Al2O3中至少一种粘结剂挤条、压片或喷球成型；再经过0.1～3摩尔/升选自硝酸铵、氯化铵或硫酸铵中的至少一种铵溶液或0.1～8.5摩尔/升选自盐酸、硝酸、硫酸或乙酸中的至少一种酸溶液在温度20～90℃下处理1～8小时；然后在温度为400～700℃条件下水蒸汽处理2～15小时；再用0.1～3摩尔/升选自草酸、柠檬酸或马来酸中至少一种在温度为20～90℃条件下浸渍2～5小时得所需改性分子筛催化剂的技术方案较好地解决了该问题，可用于甲醇转化制丙烯的工业生产中。

Specific activity of NADP+??isocitrate dehydrogenase, methylmalonyl ??coenzyme A mutase and the concentration of α??

通过实验测定发现，发酵过程补加豆油后，异柠檬酸脱氢酶、甲基丙二酰CoA异构酶的比活以及α？

Specific activity of NADP isocitrate dehydrogenase, methylmalonyl coenzyme A mutase and the concentration of αketoglutaric acid were higher with added soybean oil than that not added, and the concentration of succinic acid was lower than that without added soybean oil.

通过实验测定发现，发酵过程补加豆油后，异柠檬酸脱氢酶、甲基丙二酰CoA异构酶的比活以及α酮戊二酸的量均高于不补加豆油时的值，而琥珀酸的量低于不补加豆油时的值。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。