共查询到19条相似文献，搜索用时 109 毫秒
1.
LU Bao - qi 《上海大学学报(英文版)》2005,9(4):365-368
Infrared （IR） absorption spectra and X-ray powder diffraction （XRD） patterrns of sexpenfine cat＇s eye from Sichuan Province have been investigated, and infrared absorption bands of the serpentine have been assigned in this paper. The results indicate that the bands near 3 600 - 3 700 cm^-1 belong to the stretching absorption band VOH, the bands in 948 - 1 100 cm^-1 axe assigned to the stretching vibraling band Usvo, and the bands at 600 570 and 440 cm^-1 respectively belong to the bending vibration band VOH, δMg-O and δSi-O. The serpentine cat＇ s eye includes two types： chrysotile and antigorite. Chrysotile has a sharp and intensive band at 3 688 cm^-1 and a weak band at 3 643 cm^-1 , while antigorite has only one intensive band in the region. At vibration band VSi-O, chrysotile and antigorite have a similar feature at 1 071 cm^-1, but the band at 980 cm^-1 in anfigorite has been split into two bands in chrysotile - a strong one at 1 027 cm^-1 and a weak one at 949 cm^-1. In addition, antigorite has a characteristic bending vibrating band δMg-O at 570 cm^-1. Based on the analysis of the feature of crystal structure, their IR differences axe well explained. 相似文献
2.
《英语辅导》2004,(7):54-54,64
Close your left eye,Keep your right eye looking at the dog and move the bookback and forth[来回地]in front of you.At one point the cat disappears!You have justfound your blind spot.Everyone has one.It is the spot where the optic nerve[视神经]cord[索状组织,神经]leaves your eye,and there are no nerve cells to see the image.If youuse both eyes as you look as the dog,you won’t have a blind spot.The image fromyour left eye will make up for[弥补]the blank[空白] in your right eye. 相似文献
3.
《中学课程辅导(初二版)》2007,(11):37-37
1．the apple of one’s eye掌上明珠
例：Moy is the apple of her father’s eye．梅是她父亲的掌上明珠。 相似文献
4.
Objective： To evaluate the effect of topical corticosteroid for treatment of moderate or severe dry eye. Methods： Sixty eyes of 30 patients with moderate or severe dry eye, who were not sensitive to artificial tears, were treated with 0.1% fluorometholone eye drops. Subjective symptom and objective tests were used to evaluate the efficacy of treatment before and after application of 0.1% fluorometholone eye drops for 1 week and 1 month. Side effects were also evaluated. Results： After 1 week of treatment, subjective symptoms were improved in all dry eye patients; objective tests were improved in all dry eye patients 1 month after treatment, and the difference was significant. Conclusion： Topical corticosteroid drops can rapidly and effectively relieve the symptoms and signs of moderate or severe dry eye. 相似文献
5.
With China’s opening up and joining the World Trade Organization,more and more people are learning English.English study is very important for the learners,which involves a lot of factors,among which the learner’s own factor is the most direct and main factor.In English teaching,we shouldn’t just pay our attention to the regular teaching principle of teaching stu dents in accordance with their aptitude,and turn a blind eye to the non-intellectual factors of the learners.This thesis analyzes the differences and their reasons,and then puts forward some relevant countermeasures for eliminating the differences in English learning between boys and girls,in the hope of promoting them to make progress together in English study. 相似文献
6.
The Tell-Tale Heart is a short story by Edgar Allan Poe. The story is first-person narrative of a narrator who murdered an old man with a clouded eye. This paper aims at identifying the speaker"I"as an unreliable narrator through analyzing the motivation, process and confession of the crime. It is found out that the narrator symbolizes man of evil, while, the old man’s vulture eye symbolizes virtue. It’s a story about the conflict between evil and virtue. 相似文献
7.
杨思晴 《语文世界(高中版)》2006,(3)
关于苹果 1．the apple of one’s eye(掌上明珠) 例:May is the apple of her father’s eye．(玛丽是她父亲的掌上明珠。) 2．the Big Apple(纽约城) 例: The little girl is from the Big Apple．(这个女孩来自于纽约城。) 3．in apple order(井然有序) 例:You don’t have to worry about a 相似文献
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9.
关宇朋 《小雪花(小学生成长指南)》2005,(4)
Bee,bee,Fly up to me.Let’s make honey In the flower sea.Bee,beeM ouseM ouse,m ouse,G et into the house.No,no,m y dear,It’s a cat’s m outh.C at,catCat,cat,G et out of bed.W ash your faceAnd put on your hat.一译到底(英文)$哈尔滨市南岗区马家沟小学三(4)班@ 相似文献
10.
This paper is designed to show the importance of kinesics for successful cross-culture communication and it is organized into five parts including the study on posture,movement,facial expression,eye contact and gesture.In the end,draw a conclusion that kinesics is of fundamental importance to one’s intercultural communication competence.It bridges gaps among people from different social and cultural backgrounds.One should develop kinesics and employ kinesics means to achieve successful communications. 相似文献
11.
分析了皎原、胶原/HAP、胶原/CaCl2的红外光谱曲线,发现无论胶原矿化与否,在3300cm-1附近的氨基吸收峰无变化,但形成生物矿化物后,必然引起酰胺Ⅰ、Ⅱ、Ⅲ带的吸收减弱.据此,提出了钙与胶原上的C=0配位形成复合物的观点. 相似文献
12.
考察钯的两种联吡啶配合物:Pd(bpy)Cl2 (1)和Pd(bpy)2 (ClO4)2 (2 )的光谱、热谱和电化学行为,得出配合物 1不仅在负电势方向扫描时出现准可逆的氧化还原峰,而且在正电势方向扫描时也出现准可逆的氧化还原峰,对应在 350～ 4 50nm间出现较强MLCT吸收带;而配合物 2在 0～ 1.5V范围不出现氧化还原峰,对应 350～ 4 50nm间不出现较强MLCT吸收带.配合物中Pd～Cl伸缩频率为 354～ 343cm-1 ,Pd -N的伸缩频率为 4 4 5～ 4 55cm-1 之间,中心离子的吸电子作用使配体的IR向高频方向移动 相似文献
13.
以（NH4）6Mo7O24.4H2 O,NiSO4和（NH4）2S2O8为原料合成了（NH4）6[NiMo9O32]·8H2O杂多酸盐,并利用化学分析、差热热重、红外光谱、紫外光谱、循环伏安等方法对其进行了元素分析、结构及性质的研究。样品的红外光谱分析显示：在1000-400cm^-1处由两组突出的峰组成,显示出Waugh结构单元的特征谱带;紫外可见光谱分析显示：紫外区吸收峰位置为207nm处,可见区吸收峰位置为563.2nm;差热-热重分析显示：该化合物在1067.9-1103.5K分解,说明具有较高热稳定性;循环伏安曲线显示：该电极反应为半可逆过程,是以扩散控制的表面氧化还原过程,且伴随质子化。 相似文献
14.
以无定形二氧化硅为起始原料,与乙二醇、氢氧化钾反应,生成高反应活性的五配位硅钾化合物,以此为原料与含活泼氯的2-氯乙醇反应,制备出双羟基四配位硅单体。然后用该单体与马来酸酐(MA)、1-2丙二醇反应制备出线性不饱和聚酯的预聚体,再与苯乙烯进行自由基聚合得到共聚物,并对所合成的共聚物进行了红外光谱、热重分析等结构表征与性能分析。红外光谱表明,3 377 cm-1是端O—H的振动吸收峰,3 128 cm-1是C—H的伸缩振动吸收峰,1 728 cm-1是C=O的振动吸收峰,1 067cm-1是Si—O—C的振动吸收峰,866 cm-1是Si—O—C的面外弯曲振动吸收峰。热重分析表明,由于硅的引入,配位硅改性树脂耐热性比未改性树脂提高了近20℃左右;配位硅改性树脂的洛氏硬度比未改性树脂提高了1.5倍;改性后树脂的吸水率比未改性树脂低50%左右。 相似文献
15.
研究了BSA(bovine
serum albumin,牛血清白蛋白)及其水溶液的红外光谱,通过傅里叶自转积谱分析,对上述红外光谱的二级结构构象进行了指认.结果表明,BSA处于水溶液状态与固态时的二级结构是不同的.随着溶液浓度的降低(3.241×10-1～4.032×10-2g·ml-1),酰胺Ⅰ带二级结构子峰存在明显的位移现象,即1609.86
cm-1位移到1608.24cm-1,1633.85位移到1638.36 cm-1,1653.69 cm-1位移到1656.10
cm-1,1681.16 cm-1位移到1674.87 cm-1,1694.88 cm-1位移到1690.78 cm-1,而1621.50 cm-1附近的子峰位移现象不明显. 相似文献
16.
用氧等离子体法在低温下已将自合成的聚硅烷涂层成功地转变为二氧化硅薄膜 红外光谱分析表明薄膜的Si-O伸缩振动特征峰为 10 75cm-1,并随处理时间的延长峰位向高波数移动 ,可至 10 88cm-1 光电子能谱测得薄膜中的O1s和Si2p的电子结合能分别为 5 33 0ev和 10 3 8ev ,硅氧原子接近化学计量比 拉曼光谱分析也表明薄膜中含有一个极大的拉曼特征峰 相似文献
17.
用L-苯丙氨基酸和5-[对-(4-溴丁氧基)苯基]-10,15,20-三苯基卟啉合成了一种新型尾式卟啉及其锌(Ⅱ)配合物,并通过质谱、红外、紫外光谱对其结构进行了表征,测试并研究了它们在4000～400cm~(-1)范围内的傅里叶变换红外光谱,对主要谱带进行了经验归属． 相似文献
18.
This study on the band structures and charge densities of nitrogen （N）-, carbon （C）- and boron （B）-doped titanium dioxide （TiO2） by first-principles simulation with the CASTEP code （Segall et al., 2002） showed that the three 2p bands of impurity atom are located above the valence-band maximum and below the Ti 3d bands, and that along with the decreasing of impurity atomic number, the fluctuations become more intensive. We cannot observe obvious band-gap narrowing in our result. Therefore, the cause of absorption in visible light might be the isolated impurity atom 2p states in band-gap rather than the band-gap narrowing. 相似文献
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