查询词典 phosphorus

The aim was to study the relationship of remobilization of phosphorus in root, stem and leaf and the accumulation of phosphorus in pods in rapeseed.

［目的］研究油菜根、茎枝、叶片等营养器官后期磷素的再利用与角果中磷素积累的关系。

Phosphorus for corn under drought stress the impact of physiological characteristics - 05 graduates graduation session Abstract: In this experiment through the water culture method to cultivate maize seedlings will be planted corn seeds in the absence of P elements in the culture medium of Deficiency, the reprovision of a phosphorus-containing culture medium only for watering.

磷对于干旱逆境下玉米生理特征的影响——05届本科毕业生毕业论文摘要：本实验通过水培法来培育玉米幼苗，将玉米种子栽种在缺少磷元素的缺素培养液中，另配一份只含磷的培养液用于浇灌。

The method adopts the following steps: after mixed, phosphorus source, silicon source, aluminum source, an organic template agent, water and a precursor of the SAPO molecular sieve are hydrothermally crystallized for at least 0.1 hour at the temperature ranging from 110 to 260 DEG C to obtain the SAPO molecular sieve; wherein, the preparation method for the precursor of the SAPO molecular sieve has the following steps:, the molar ratio is 0.03 to 0.6 R:(Si0.01 to 0.98: Al 0.01 to 0.6: P0.01 to 0.6): 2 to 500 H2O; wherein, R stands for mixture solution of raw materials which is blended by the phosphorus source, the silicon source, the aluminum source, the an organic template agent and water of the template agent;, the mixture solution of raw materials prepared in step reacts at the temperature which is at least 50 DEG C lower than the crystallization temperature for at least 0.1 hour.

本发明通过采用包括以下步骤：将磷源、硅源、铝源、有机模板剂、水和SAPO分子筛前驱体混合后在110～260℃的温度下水热晶化至少0.1小时获得SAPO分子筛；其中SAPO分子筛的前驱体的制备包括以下步骤：将摩尔配比为0.03～0.6R∶(Si0.01～0.98∶Al0.01～0.6∶P0.01～0.6)∶2～500H 2 O，式中R代表模板剂的磷源、硅源、铝源、有机模板剂和水混合成原料混合液；将步骤制备的原料混合液在低于晶化温度至少50℃的温度下反应至少0.1小时的技术方案较好地解决了该问题，可应用于含氧化合物制烯烃催化剂的制备过程。

For the polluted water with less than 5.0 mg/L of TP and less than 34.0mg/L of NH4(superscript +)-N, four algal species films all have favorable performance to remove nitrogen and phosphorus, and Scenedesmus has the best performance to remove phosphorus and ammonia.

对TP质量浓度小于5.0 mg？L^(-1)，NH4-N质量浓度小于34.0 mg？L^(-1)的污染水体，四种藻膜都有良好的去除氮磷能力，其中栅裂藻去除TP、NH4-N的能力最强。

It introduces the production control of low phosphorus and low carbon high silicon silicomanganese and the measures and crafts requirement of decreasing phosphorus and carbon.

论述了低磷低碳高硅锰硅合金的生产控制和降磷降碳措施以及工艺要求。

As for the ester exchange reaction on phosphorus, it was found that N-phosphoryl histidine the fastest one among all of the N-phosphoryl aminoacids. The results studied by MNDO method indicate that due to theparticipation of imidazole group, the formation of hexa-coordinatephosphorus intermediate made the iso-propoxyl which is opposite toimidazole group more active than the other ones and much easier to leave.When iso-propoxyl left, a new penta-coordinate phosphorus intermediate wasformed, and it is sterically favorable to be attacked by an alcohol from theopposite direction of imidazole.

对于磷上酯交换反应，实验中发现N-磷酰组氨酸反应速度明显高于其它N-磷酰氨基酸，理论研究表明，侧键咪唑基参与下六配位磷中间体形成后，位于咪唑基对面的异丙氧基反应活性大大提高，即从咪唑基的对面位置发生异丙氧基的离去和另一分子醇的进攻，在能量上和空间上都是有利的。N-磷酰丝氨酸的磷上酯交换反应有着类似的特点。

The results from the study on characters of phosphorus section distribution show that there are obviously ascending of phosphorus content in the surficial sediments and pore water.

以密云水库为例，研究了水库沈积物中有机质的含量与有机磷的关系，表明表层沈积物中的总有机碳和有机磷的含量都明显高於底层，是由於一些以磷为营养素的富营养化指示藻类在水体中逐年增加，它们死亡后的残骸经分解－矿化后在底积物中累积的结果。

Diethylthiophosphoryl chloride was synthesized by reacting phosphorus thiochloride with anhydrous alcohol in the presence of NaOH, and then a novel phosphorus-nitrogen- and sulfur-containing flame retardant, 1, 4-di(O,O-diethyl thiophosphoryl imine) benzene, was synthesized via the reaction of diethylthiophosphoryl chloride with p-phenylenediamine.

以三氯硫磷与无水乙醇在NaOH存在下合成了二乙基硫代磷酰氯，然后再与对苯二胺反应合成了新型的含磷、氮、硫的膨胀型阻燃剂：1，4-二（O，O-二乙基硫代磷酰亚胺基）苯。

The phosphorus oxychloride or phosphorus tribromide N, N-dimethylformamide mix and react to form the Vilsmeier reagent used in the reaction. The newly prepared Vilsmeier reagent is added into the reaction bottle provided with the return condenser and the blender; a reaction raw material N, N-dimethylformamide solution expressed in the reaction formula is added into the system; the temperature is risen; the corresponding multi substituting pyridine-2 (1 H)-ketone compound can be made after the column chromatography of the silica gel; the production rate is between 60 and 95 percent according to different reactions.

由三氯氧磷或三溴化磷N，N-二甲基甲酰胺混合获得反应中所用Vilsmeier试剂；将新配制的Vilsmeier试剂加入装有回流冷凝管、搅拌器的反应瓶中，向体系中加入反应通式中表示的一种反应原料的N，N-二甲基甲酰胺溶液，升温，经硅胶柱层析分离得相应的多取代吡啶-2(1H)-酮类化合物，产率视不同反应在60~95％之间。

The content of soil ulmin,and the entire nitrogen have slightly rise; compares to 20 years ago , the average content of soil effective phosphorus has slightly increased,but the condition that the soil lack of the phosphorus is still obviously;Athough the content of fast-acting potassium has slightly down,it still stand in a low level,so the soil can't satisfies the needs of the plant normal live.

土壤有机质、全氮含量略有上升；土壤有效磷平均含量比20年前略增加，但缺磷状况仍十分明显；速效钾含量略有下降，仍处于较低水平，不能满足作物正常生长的需要。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。