查询词典 py

The electrons on a surface state induced by two-photon absorption (2PA) can be trapped by pyridine or 2, 2'-bipyridine, and have more long lifetime, which is helpful for increasing the third-order nonlinearities.

双光子吸收诱导产生的表面受陷电子能被Py或2，2'-bPy捕获，并且具有较长的寿命，这有利于对激子吸收的漂白，从而提高了三阶非线性。

This paper reviews the development of synthetic technology of carbon nanotube by catalytic py-rolysis of carbonous compound and compares the advantages and disadvantages of moving support method and floating catalysis method.

介绍了催化热分解含碳化合物合成碳纳米管的技术，比较了基板法和流动催化法的优缺点以及它们的发展前景，并简单地介绍了碳纳米管的应用领域。

Rece ntly new chemotherapeutic drugs always appear endlessly, and plans of chemothera py update endlessly. But the total catabatic rate and viability are still low. T he main reason is the multidrug resistance of leukemic cells to chemothera peutic drugs.

近年来新的化疗药物不断涌现，化疗方案不断更新，然而白血病总的完全缓解率和长期生存率仍然低下，究其原因，主要是白血病细胞对化疗药物的多药耐药。

Using histology, immunohistochemistry and electron microsco py, we studied the distribution and morphological structure of the thyroid folli cle grey mu llet, Mugil cephalus.

用组织学、免疫组织化学和电镜技术对鲻鱼甲状腺的分布与形态结构进行研究。

Infrared Absorption Spectrum and X-ray Photoelectron Spectrosco-py detect and analyze the adsorption mechanism of diphosphonic acid on the surface of niobite.

同时用 ias 和XPS检测和分析了双膦酸对铌铁矿的作用机理。

A modified γ-Al〓O〓 was prepared by a special precipitation method with aluminum nitrate solution containing a certain amounts of orthosilicic acid and ammonia aqueous solution. Compared with commercial γ-Al〓O〓, the modified γ-Al〓O〓 was an effecient catalyst for dehydration of tetrahydrofurfuryl alcohol to dihydropyran. The results revealed that the strong acid sites on the surface of the catalyst may play a crucial role in this reaction.

并以硝酸铝和氨水为原料，用沉淀法制备出一种高比表面和拥有较多强酸中心的γ-Al〓O〓，它在四氢糠醇开环脱水制备二氢吡喃的反应中有优良的催化活性，通过比较此γ-Al〓O〓和普通商业γ-Al〓O〓的Py-TPD图，发现强酸中心在制备二氢吡喃的反应中可能具有关键的作用。

Methods Thirty-seven cases of ovarium carcinoma that using two different chemothera-py plan about PC and PAC after reducing carcimoma operation were observed.

对37例卵巢上皮恶性肿瘤减瘤术后分别应用PC与PAC两个化疗方案联合化疗效果进行分析；完成3个疗程化疗后，总结治疗效果。

Pure phase FER zeolite and siliceous FER zeolite have been synthesized in the systems of tetramethyl ethylene diamine- Na2O- SiO2 - Al2O3 - H2O, Na2O - K2O - Al2O3 - SiO2 - H2O -HCO3-- CO32-, and pyridine - propylamine- HF- SiO2 - H2O respectively.

在TMEDA-Na2O-SiO2-Al2O3-H2O体系，Na2O-K2O-Al2O3-SiO2-H2O-HCO3--CO32-体系及Py-PrNH2-HF-SiO2-H2O体系中，分别合成了纯相FER沸石及FER硅沸石。

Result Among 384 MB patients, 4 had relapsed in Xingyi City. The mean relapse rate was 0.15/100 person-years. In Puan County, 1 out of 297 MB patients had relapse. The mean relapse rate was 0.05/100 py. A total of 5 cases of relapse in these counties, and these figures were not included in the man-year relapse rate study.

结果 兴义市384人实施MB方案，MB方案MDT后监测10年，有4人复发，平均复发率为0.015/100人年；普安县297名MB中有1人复发，平均复发率为0.05/100人年。10年监测期后，两县／市共有5人复发，未计算在人年复发率中。

A diperoxovanadate complex NH4[OV(O2)2{2-(2'-pyridyl)-imidazole}]×4H2O,bpV for short,was investigated at the level of cell and animal based on its proliferation on cancer cells,inhibition on alkaline phosphatase and anti-tumor in animal experiments.

在细胞和动物实验水平上，研究了双过氧钒化合物NH4[OV(O2)2(C8H7N3)]×4H2O简写bpV(Imi-Py对癌细胞的增殖作用，碱性磷酸酶的活性抑制和体内抗肿瘤作用。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。