磷酸

MATERIALS: Composite scaffold was made with collagen/chitosan/β-tricalcium phosphate. Upper layer was mainly collagen/chitosan, and lower layer was mainly collagen/chitosan/β-tricalcium phosphate. The factor of porosity was 90%, with antilinear of 100 μm.

材料：以胶原、壳聚糖、β-磷酸三钙制备复合支架，上层以胶原／壳聚糖为主，下层以胶原／壳聚糖／β-磷酸三钙为主，孔隙率≥90%，孔径100μm。

The results show that: the fillers of SiO_2 based investment consist of SiO_2,Al_2O_3 and MgO,and the binder is NH_4H_2PO_4;for SiO_2 based investment,the bulk density and the compression strength decrease,the apparent porosity and the thermal expansion increase,when the specimens are heated to 900 ℃;the fil.

结果表明：氧化硅系包埋料的骨料是氧化硅、氧化铝、氧化镁，结合剂为磷酸二氢铵，其900℃煅烧后显气孔率增加，体积密度下降，耐压强度降低，热膨胀增大；氧化铝系包埋料的骨料是氧化铝和氧化镁，结合剂为磷酸二氢铵，其900℃烧后显气孔率增加，体积密度下降，热膨胀变化不大；氧化镁系包埋料的骨料是氧化镁和氧化铝，结合剂是铝酸钙水泥，其900℃烧后耐压强度明显降低，热膨胀明显增大。

Why did the substitution of arsenate for phosphate prevent the accumulation of the bisphosphohexose yet allow fermentation to ethanol and CO2 to go to completion?

为什么砷酸取代磷酸阻止了二磷酸己糖的积累，但是产生乙醇和CO2的发酵反应仍然可以进行直至完成

By methods of indirectly labelling with NaH〓PO〓 and directly labelling in atomic pile, Ca〓-P, Ca〓-P, Ca〓-P, Fe-P and A1-P were isotopically labelled.

试验结果进一步证明，菌丝际的土壤pH有所降低（0.2-0.4个单位）；磷酸二钙和磷酸八钙处理的菌丝际土壤溶液中磷浓度显著地高于基他处理。

The results showed that:(1) 5'-nucleotide contents in yeast autolysate was slightly increased by adding RNase frommalted barley roots;(2) higher pH did not improve the 5'-nucleotide contents even in the presence of RNase from malted barleyroots, but at the pH 8.0, the addition of Acalase could increase the final yield, soluble protein contents and 5'-nucleotide inthe presence of RNase from malted barley roots.

酵母核酸酶的pH稳定性和温度稳定性均比麦芽根核酸酶的要差。这说明自溶法生产酵母提取物时，即使外加5'-磷酸二酯酶不能有效提高呈味核苷酸的原因并非由于外加的5'-磷酸二酯酶性质不稳定，而是另有其它原因。

Two kinds of water-soluble biomimetic chitosan derivatives with a phosphoramide linkage between glucosamine and choline were prepared through Atherton-Todd reaction under the mild conditions, including zwitterionic phosphorylcholine bound chitosan and acetyl-phosphorylcholine bound chitosan with positive charge. The interaction between chitosan derivatives and calf thymus DNA were inversigated by UV alsorption spectra and circular dichroism spectra.

采用Antherton-Todd反应制备了两种水溶性的磷酰化壳聚糖仿生衍生物：两性的N-磷酸胆碱磷酰化壳聚糖和带正电荷的N-乙基磷酸胆碱磷酰化壳聚糖，并用紫外吸收光谱和圆二色光谱研究了两种胆碱磷酰化壳聚糖衍生物与小牛胸腺DNA的相互作用。

We found that compound TMU023 stimulated a dose dependent AMPK phosphorylation in NRK52E cells. The activation of AMPK is associated with increased phosphorylation of its downstream substrate, acetyl CoA carboxylase, and increased fatty acid b-oxidation in NRK52E cells.

我们发现了一个编号为TMU023的纯化物，可以刺激NRK52E细胞中AMPK的磷酸化，活化的AMPK也可以增加其下游受质acetyl CoA carboxylase的磷酸化和NRK52E细胞的脂肪酸b-氧化作用。

This reaction is catalyzed by the enzyme ribulose bisphosphate carboxylase.

CO2与5碳糖2-磷酸核酮糖结合而被固定，形成两分子的磷酸甘油酸。

In the leaves, the mesophyll cells surrounding the vascular bundles contain the carbon dioxide-fixing enzyme phosphoenolpyruvate carboxylase in their cytoplasm.

在叶片中，叶肉细胞包围着维管束，叶肉细胞细胞质中所包含的磷酸烯醇式丙酮酸羧化酶，具有比核酮糖二磷酸羧化酶更高的的与二氧化碳的亲和力。

Glycerate 3-phosphate is the first product of the dark reactions of PHOTOSYNTHESIS, formed by the carboxylation and cleavage of ribulose bisphosphate.

甘油3—磷酸是光合作用暗反应的一种产物，在二磷酸核酮糖的羧化分解后形成。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。