Microwave-assisted synthesis of 14-aryl-14H-dibenzo[a ,j] xanthene;
14-芳基-14H-二苯并[a,j]占吨衍生物的合成
Polymer-supported Sulphonic Acid Catalyzed One-pot Synthesis of 14-aryl-14H-dibenzo[a,j] xanthenes;
聚合物负载磺酸催化合成苯并占吨
The molecule has a Y style structure which is composed of two parts of butterfly-like xanthene and almost planar isobenzofuran.
合成了螺［异苯并呋喃－１（３Ｈ），９＇－（９Ｈ）－２＇－Ｎ，Ｎ－二苄胺基－６＇－二乙胺基占吨］－酮－３，Ｃ＿（３７）Ｈ＿（３４）Ｎ＿２Ｏ＿３，单斜晶系，空间群Ｃｃ，晶体学参数为ａ＝１６。
First-principle calculation for site substitution of 3d transition metal elements in NiAl intermetallic compound;
3d过渡金属在NiAl中占位的第一原理计算
Site substitution of 4d transition metal(TM) elements in L10-TiAl intermetallic compound were investigated with the first-principle method based on plane-wave pseudopotential theory.
通过对Ti7Al8X与Ti8Al7X超胞的合金形成能的计算、比较与分析发现:合金化元素的外层电子数,特别是外层的d电子数对其在L10-TiAl合金中的占位有非常明显的影响,d电子数较少的前过渡金属Y,Zr,Nb和Mo主要优先占据Ti原子位,而d电子数较多甚至是满d壳层的Rh,Pd,Ag和Cd则主要优先占据Al原子位。
In this paper, the evaluation standards are discussed, such as those for waste water quality and scale of wastewater treatment plant, selection of wastewater treatment technology, sludge treatment, land occupation, running cost and capital investment of wastewater treatment plant.
对污水处理厂可行性研究报告中污水水质、污水处理厂规模的确定、污水处理工艺选择、污泥处理、污水处理厂占地、运行费用以及工程投资等评审参考标准进行了探讨 ,污水处理厂规模的确定非常重要 ,污水处理工艺的确定是污水处理厂可行性研究报告的关键 ,建议采用高效低耗污水处理工艺 ,例如 ,氧化沟工艺 (OD)、SBR工艺等 ,其主要经济指标为 :吨水投资 60 0～ 90 0元 ,吨水占地 0 。
The writer has taken land occupation within the Yuanshi section as an example, summed up the experience from the land use of Beijing-Shenzhen Freeway, and raised the initial countermeasures for land occupation in the project of the south to north water transfer.
南水北调工程规模宏大,占地较多,沿线土地资源十分宝贵。
God Faith and Divination of Lahu People——Survey of Religious Anthropology in a Lahu Village;
拉祜族神灵信仰与占卜习俗初探——一个拉祜族村落的宗教人类学考察
Illogical Transformation——An Analysis of Complementary combination of ancient divination and witchcraft in "Dun Huang Xie Ben Zhai Jing";
非逻辑的变通——从敦煌写本宅经“镇宅法”看古代占卜、巫术的互补结合
"Tian Yi" in the divination manuscripts of Dunhuang appeared in the ancient books of Taoism and religious activities in the Eastern Han Dynasty.
敦煌数术文献中的"天医"较早出现于东汉时期的道教典籍与宗教活动中,由于具备疗疾治病的信仰功能,故在魏晋隋唐进一步扩展到医学与占卜数术领域。
Comparing to these result parameters,we find the D-atom occupancy position of LaNi_(5)D_(0.
3中D原子的占位位置,结果与实验精修的结果是一致的。