情迷GPCR

20世纪90年代后期，加州大学Olivier Civelli实验室的Irvine与十几个研究人员忙着投入到寻找一条重要分子信号途径的缺失的联系中。这一途径一半的组分已经被阐明，就像几百种G蛋白偶联受体（GPCR）通过DNA筛选被鉴别一样。然而，仍然缺少某一组分，即与受体结合的信号诱导分子，或者准确的称之为配体。     

一个污染环境中的单种群模型的动力学性质

以脉冲微分方程为基础建立了一个污染环境中在固定时刻对污染净化处理的单种群模型,详细研究了此模型的动力学性质,给出了种群灭绝和持续生存的充分条件.结果表明,当脉冲作用的周期小于某个阈值时,种群将持续生存;否则,种群将趋于灭绝.     

Research on a multiparameter water quality prediction method based on a hybrid model

Watershed water quality monitoring is of great significance in the protection and management of water environments. Because existing water quality prediction algorithms cannot achieve high-precision multiparameter analysis and usually require a large amount of data, this paper proposes the VARLST hybrid water quality prediction model. The proposed model combines the traditional statistical vector autoregressive moving average model and the bidirectional long short-term memory neural network to achieve multiparameter water quality data prediction on small data samples, and the model data processing is simple and highly efficient. This model is used to analyze the characteristics of water quality parameters in the Inner Mongolian section of the Yellow River Basin in northern China. The average error and fitting accuracy of the prediction results are 0.0015 and 99.869%, respectively; hence, the model achieves high-accuracy prediction of multiparameter indicators using less data, outperforming single models in terms of feasibility and accuracy.     

N—甲基吩嗪为介体辣根过氧化物酶传感器的研究

研究了将Ｎ－甲基吩嗪作为介体,通过牛血清白蛋白和戊二醛使其作为结合到玻碳电极上去的辣根过氧化物酶生物传感器。该酶电极对过氧化氢有良好的响应,Ｎ－甲基吩嗪还原电流的增值与过氧化氢浓度在１×１０－６～５×１０－４ｍｏｌ／Ｌ范围内有良好的线性关系,该传感器灵敏度高,检出限为１０－７ｍｏｌ／Ｌ,对过氧化氢的响应时间小于１０ｓ。