钾

Through bulk copolymerization of octamethylcyclotetra siloxane and aminosilan monomer named N-β-aminoethyl-γ-aminopropyl methyl dymethoxysilane, an amino silicon oil was prepared.The comparison of effect of KOH and tetramethyl ammonium hydroxide as catalyst of the reaction with different status filled in was carried through.

本文首先进行了氢氧化钾和四甲基氢氧化铵催化性能和催化剂加入方法的研究，证实氢氧化钾作为催化剂其催化性能受到实际分散程度的显著影响，因此制备催化剂悬浮液是必须的；而KOH本身易于吸收水分和空气中的二氧化碳，同时反应对水分敏感，氢氧化钾实际表现出的催化性能不理想。

As a result of recent world-widediscussions on the possible harmfulness of sulphites, theJoint FAO/WHO Expert Committee on Food Additives has assessed the intake of sulphur dioxide andrelated compounds, suchas calcium, potassium andsodium hydrogen sulphite; calcium, potassium and sodiummetabisulphite; calcium, potassium and sodium sulphite;and sodium thiosulphate.

由於最近全世界关於硫化物的可能的有害，在食品添加剂的联接FAO/WHO专家委员会的讨论估计了二氧化硫入口和相关化合物， suchas钙，钾和钠氢硫化物；钙、钾和钠偏亚硫酸氢盐；钙、钾和亚硫酸钠；并且钠硫代硫酸盐。

Results The patients with the serum potassium concentration over 4.1 mmol/L accounted for 19.4 % in the group A, 37.7 % in the group B, 94.9 % in the group C at the aorta unclamped.

结果 方法1组在主动脉开放时血清钾＞4.1mmol/L者19.4%，方法2组主动脉开放时血清钾＞4.1 mmol/L者为37.7%者，方法3组主动脉开放时血清钾＞4.1 mmol/L者94.9%。

Because of绿叶菜fresh vegetables, beans and starchy vegetables more types of potassium, fruits such as banana, apricot, plum potassium-rich, poultry, fish, lean meat, such as high potassium content.

因为新鲜蔬菜中的绿叶菜，豆类及根茎类含钾较多，水果中如香蕉、杏、梅含钾丰富，家禽、鱼、瘦肉等含钾亦高。

Process:① the platinum wire dipped in concentrated hydrochloric acid to colorless colorless flame on the ignition;②sample in the colorless flame ignition, to observe the flame color (if test potassium cobalt glass through observation, because in most cases need to be used when the system of potassium sodium, potassium solution, therefore often contain sodium, and sodium yellow flame color reaction, a small amount of yellow and purple, respectively, can not come out).

3操作过程：①将铂丝蘸浓盐酸在无色火焰上灼烧至无色；②蘸取试样在无色火焰上灼烧，观察火焰颜色(若检验钾要透过钴玻璃观察，因为大多数情况下制钾时需要用到钠，因此钾离子溶液中常含有钠离子，而钠的焰色反应为黄色，黄色与少量的紫色无法分别出来)。

The differences of capability enrichment in potassium were very significant between different species of grain amaranths grown on deficient potassium soil after 60 days of seeding and in water culture after transplanting 30 days.

中文题名籽粒苋富钾营养机理研究副题名外文题名 The nutrition mechanism of grain amaranth enrichment in potassium 论文作者李廷轩导师马国瑞学科专业植物营养学研究领域\研究方向学位级别博士学位授予单位浙江大学学位授予日期2003 论文页码总数126页关键词钾营养植物营养富钾基因型籽粒苋馆藏号BSLW /2003 /Q949 /47 1。

The effect of bacteriostatic such as penicillin, norfloxacin, nalidixic acid, potassium dichromate and tatin were studied individually. The orthogonal design was used in this experiment and the software STATISTICA6.0 was employed to analyse the result. The result showed that the potassium dichromate was the best bacteriostatic among those bacteriostatices.

研究了青霉素、萘啶酸、制霉菌素、重铬酸钾和氟哌酸5种抑制剂对分离土壤放线菌的影响，其中以重铬酸钾的分离效果最好，其次为制霉菌素；通过正交试验研究了重铬酸钾、萘啶酸、制霉菌素3因子组合对放线菌分离的影响；最后用STATISTICA6.0进行分析。

While K- treatments are well reflected by K- rachis contents, a negative interaction with boron was found in the B2 treated subplots.

叶轴中钾的含量可以很好地反映钾处理的结果，在B2处理付区中发现，施钾效果与B呈负交互效应（图4）。

The average level of the soil available potassium was 119.96 mg/kg, which decreased 18.94 mg/kg and 1.05 mg/kg one year averagely. But the decreasing trend alleviated in recent years. There were 39.5 kg/hm^2 nitrogen and 30.9 kg/hm^2 phosphorus (P2O5) more than needed averagely, and 150.0 kg/hm^2 potassium (K2O) in deficiency. Though the fertilizer application was high and the rate of fertilizer was 647.96 kg/hm^2 in nutrient, the ratio of organic to inorganic was still unreasonable. The ratio of the chemical fertilizer nitrogen phosphorus (P2O5) and potassium (K2O) was 1:0.42:0.14. The nitrogen application was enough and even higher than that was needed. The phosphorus was proper elementarily and potassium was in deficiency. The yield of wheat which was the main crop increased slightly and that of other autumn harvest crops was stable.

土壤速效钾7年平均值119.96 mg/kg，比第二次土壤普查时下降了18.94 mg/kg，平均每年以1.05 mg/kg的速度下降，但近年来下降趋势变缓；养分平衡中氮素平均盈余39.5 kg/hm^2，磷素(P2O5)盈余30.9 kg/hm^2，钾素(K2O)亏缺150.0 kg/hm2；全省施肥水平较高，每公顷总施肥量折纯养分647.96 kg，但有机无机比仍不合理，化肥氮、磷、钾投入比例1：0.42：0.17，氮肥充足，部分地区用量偏高，磷肥基本合理，钾肥不足；主要农作物小麦产量略有上升，其它主要秋收作物产量基本稳定。

A comparison of the degradation effectiveness of PVA by potassium ferrate, sodium hypo-chlorite and combination of them was studied. The effects of potassium ferrate and sodium hypochlorite dosage, oxidation time, initial concentration of PVA and pH on removal rate of PVA were explored.

文章比较了高铁酸钾、次氯酸钠、高铁酸钾与次氯酸钠联用对PVA的降解效果，考察了高铁酸钾和次氯酸钠的投加量、氧化时问、PVA溶液的pH值和初始质量浓度对PVA去除率的影响。

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％。