沁水盆地南部高煤级变形煤结构组成特征及其对吸附/解吸的影响

通过显微组分测定、镜质组反射率测试、元素分析和工业分析、液氮吸附、透射电镜观察和等温吸附/解吸实验等,对沁水盆地南部高煤级变形煤的结构组成和吸附/解吸特征进行系统研究. 结果表明,1）高煤级煤随变形程度不同,其宏观、微观孔裂隙特征不同;2）高煤级变形煤的化学结构组成差异明显;3）高煤级变形煤吸附/解吸与煤岩物化结构组成的关系密切.     

Characterization of a Double Heterozygote HbE/β+ Thalassemia IVS 1-1 [G>T] in a Juvenile Diabetic

The present case report describes the molecular and proteomic based study of Hb variant HbE associated with β⁺ thalassemia IVS 1-1 G>T, in a juvenile diabetic patient. Given the ethnic origin and mobility of the variant hemoglobin at alkaline pH, HbE would be suspected. But hematologically and clinically abnormality being detected, HPLC and Electrophoresis not being able to characterize due to retention time and band being in region of HbA2, respectively, further characterization of hemoglobinopathy was made using MALDI and IVS 1-1 G>T being validated by reverse dot blot hybridization. Capillary electrophoresis was also employed in order to separate HbE and HbA2 bands. This case report being first of its kind, wherein a HbE/β⁺ thalassemia has been characterized using multiple techniques.     

Co-inheritance of HbD Iran/Beta Thalassemia IVS1–5 (G?>?C) Trait in a Punjabi Lady with Diabetes

The present report describes the molecular study of HbD ^Iran (beta) 22 Glu → Gln associated with β-Thalassemia IVS1–5 (G > C) found in India, and the first case in which mutation has been identified using mass spectrometry. Given the apparent ethnic origin and the mobility of the variant hemoglobin at alkaline pH, hemoglobin D-Punjab would be suspected, but HPLC excluded this possibility. Further characterization of hemoglobinopathy was made by using nondenaturing gel electrophoresis and matrix assisted laser desorption ionization mass spectrometry and IVS1–5 being validated by reverse dot blot hybridization followed by sequencing of the β-globin gene.     

超分子体系中的分子识别

超分子化学是一个蓬勃发展的化学新领域，分子识别作为一类与超分子化学密切相关的过程，它在合成化学、生命科学、材料科学及信息科学中起着愈来愈重要的作用。本文介绍了分子识别的基本概念及分子识别中的阳离子识别、阴离子识别和中性分子识别。     

调节植物发育的胞外信使分子

近年来，相继发现一些植物胞外分子如细胞壁钙调素、胞外Ca^2 、寡糖素和阿拉伯半乳聚糖蛋白（AGPs）等，它们都是重要的信号源，与植物的发育密切相关。胞外信使分子在植物发育中的重要作用的研究虽刚刚起步，但已受到人们的充分关注和重视。     

单分子导电性质的研究进展

介绍测量单个有机分子导电性质的一些进展,包括分子的尺寸效应,官能团效应,分子与电极的接触效应,以及分子逻辑器件的初步研究.     

近代化学史上的“半个原子”问题

道尔顿的原子论是近代化学史上的一项划时代的成就 ,但是它存在着一个自身不能克服的内在矛盾 ,即道尔顿把化合物的“原子”称为“复杂原子” .这一矛盾的外化 ,导致产生了“半个原子”的问题 .为了解决“半个原子”的矛盾问题 ,阿佛加德罗在盖·吕萨克的实验基础上 ,进行了科学合理的推论 ,引入了分子概念 ,提出了分子假说 ,初步解决了“半个原子”的矛盾问题 .在此基础上 ,坎尼扎罗完成了科学的“原子 -分子”理论体系 ,最终完善地解决了“半个原子”矛盾问题 .本文通过对“半个原子”矛盾问题的形成、提出和解决过程的历史考察 ,总结出了科学发展的几点规律性的结论 .     

Correlation of matrix metalloproteinase-2, -9, tissue inhibitor-1 of matrix metalloproteinase and CD44 variant 6 in head and neck cancer metastasis

INTRODUCTIONHeadandneckcancersquamouscellcarci noma (HNSCC)isthefifthmostfrequentmalig nantneoplasmworld wide ;andischaracterizedbylocalinvasion ,disseminationtolocallymphnodeandfrequentrecurrenceattheprimarysiteoftumour.Despiteimprovementsindiagnosisandt…     

酶选择对称底物分子机理的探讨

乌头酸酶在三羧酸循环中催化柠檬酸生成异柠檬酸。本文以乌头酸酶为例,深入探讨了酶对对称底物分子进行选择的机理,同时对酶专一性分类系统进行了分析和重新调整。     

群C4V的CH4表现

本利用群论的知识，从CH4的分子结构出发，研究了群C4v的特征及其特征表的性质，所得结论与用化学方法是相同的．