Physical Foundations of Formation of Bio-Self-Organization and the Bio-Photon Emission in the Living Systems

According to elementary processes of the biological activities in the living systems with open and non-equilibrium states, which can ever exchange the energy and material and information with the environments, we have established a statistical model formed bio-self-organization, which live on the basis of the negative entropy, by the quantum statistical-theory of non-equilibrium state. From this model we have obtained the peculiar curves of changes of the energy of molecules and found out the distribution function of bio-molecules on quantum energy-levels in the living systems which are completely different from that in inorganic matters. Utilizing the curves of energy obtained we explain well the phenomenon of bio-photon emission of the bio-self-organizations found in the experiments.     

Synthesis and Modification of Zn‐doped TiO2 Nanoparticles for the Photocatalytic Degradation of Tetracycline

The synthesis of Zn‐doped TiO₂ nanoparticles by solgel method was investigated in this study, as well as its modification by H₂O₂. The catalyst was characterized by transmission electron microscopy, X‐ray diffraction, Brunauer–Emmett–Teller, UV–visible reflectance spectra and X‐ray photoelectron spectroscopy (XPS). The results indicated that doping Zn into TiO₂ nanoparticles could inhibit the transformation from anatase phase to rutile phase. Zn existed as the second valence oxidation state in the Zn‐doped TiO₂. Zn‐doped TiO₂ that was synthesized by 5% Zn doping at 450°C exhibited the best photocatalytic activity. Then, the H₂O₂ modification further enhanced the photocatalytic activity. Zn doping and H₂O₂ modifying narrowed the band gap and efficiently increased the optical absorption in visible region. The optimal degradation rate of tetracycline by Zn‐doped TiO₂ and H₂O₂ modified Zn‐doped TiO₂ was 85.27% and 88.14%. Peroxide groups were detected in XPS analysis of H₂O₂ modified Zn‐doped TiO₂, favoring the adsorption of visible light. Furthermore, Zn‐doped TiO₂ modified by H₂O₂ had relatively good reusability, exhibiting a potential practical application for tetracycline's photocatalytic degradation.     

Pd/TiN nanocomposite catalysts for selective hydrogenation of phenol and its derivatives

Pd/TiN nanocomposite catalysts were fabricated for one-step selective hydrogenation of phenol to cyclohexanone successfully. High conversion of phenol (99%) and selectivity of cyclohexanone (98%) were obtained at 30℃ and 0.2 MPa H₂ for 12 h in the mixed solvents of H₂O and CH₂Cl₂. The Pd nanoparticles were stable in the reaction, and no aggregation was detected after four successive runs. The catalytic activity and selectivity depended on slightly the Pd particle sizes. The generality of the catalysts for this reaction was demonstrated by the selective hydrogenation of phenol derivatives, which showed that the catalyst was selective for the formation of cyclohexanone.     

基于IP PBX技术的话务系统设计与实现

摘 要: 针对IP PBX的操作复杂问题,提出了一种简化IP PBX电话系统的设计方案。设计了便捷实现IP PBX的用户指定操作的话务系统。新系统采用了自定义协商接口,通过Telnet通信协议和IP PBX进行通信。并实现了对各类接收数据进行高效处理和解析。完成各类短长途话务接转控制。实现客房入住统计和话务免打扰等服务。此话务系统可应用于宾馆、宾馆等场所,提高工作效率和服务水平。此系统目前已在宾馆中应用,运行状况稳定,使用效果良好。简化了人工操作流程和复杂度,节约了业务时间,提高工作实效。     

基于虚拟仪器的装备ATS系统硬件平台设计与实现

在对现有维修检测设备存在不足分析的基础上,结合武器装备的维修技术保障需求,利用分块设计思想,采用虚拟仪器、人工智能、计算机通讯与控制等技术,搭建了基于虚拟仪器的装备自动测试系统硬件平台整体架构,在对系统各功能模块原理进行分析之后,对系统主控电路、电磁兼容性进行了设计。采用虚拟仪器的装备自动测试系统硬件平台,具有智能化、通用化、可视化的特点,通过试验结果分析,测试系统硬件平台能够实现装备的性能检测和故障诊断,测试数据符合任务要求,能满足各级修理机构维修测试需求。     

基于9DOF IMU的AUV惯性导航技术研究

水下机器人（underwater vehicle）惯性导航技术是目前机器人控制技术的难点,通过加装不同类型的IMU组件,可以实现水下机器人姿态、方位等参数的测量,并将这些参数作为反馈输入来实现水下机器人的精确控制。针对低成本微惯性传感器的应用特性,采用Sparkfun、Arduino Mega和Raspberry Pi,设计了基于Raspberry Pi集中处理、Arduino控制板分布式控制的微小型捷联惯导系统,实现了水下机器人惯性导航系统的全部导航和制导参数读取,包含位置坐标、线速度、角速度、姿态角、方位角等信息,通过水池试验表明应用表明本系统满足Eco-dolphin的水下定航控制要求。     

Analysis of a Tessiet type food chain chemostat with k-times’ periodically pulsed input

In this paper, we introduce and study a Tessiet type food chain chemostat, which contains with predator, prey and k-times’ periodically pulsed substrate. We investigate the subsystem with substrate and prey and study the stability of the periodic solutions, which are the boundary periodic solutions of the system. The stability analysis of the boundary periodic solution yields an invasion threshold. By use of standard techniques of bifurcation theory, we prove that above this threshold there are periodic oscillations in substrate, prey, and predator. Simple cycles may give way to chaos in a cascade of period-doubling bifurcations. Furthermore, by comparing bifurcation diagrams with different bifurcation parameters, we can see that the impulsive system shows two kinds of bifurcations, whose are period-doubling and period-halfing. When impulsive period is small, there exists quasiperiodic oscillation in the impulsive system.     

Competition in a chemostat with Beddington–DeAngelis growth rates and periodic pulsed nutrient

A system of impulsive differential equations is considered as a model of two populations competing for a pulsed inputting nutrient with Beddington–DeAngelis growth rates. Criteria are derived for the coexistence or non-coexistence of the competing species.     

Analysis of Monod type food chain chemostat with k-times’ periodically pulsed input

In this paper, we introduce and study a model of a predator-prey system with Monod type functional response under periodic pulsed chemostat conditions, which contains with predator, prey, and periodically pulsed substrate. We investigate the subsystem with substrate and prey and study the stability of the periodic solutions, which are the boundary periodic solutions of the system. The stability analysis of the boundary periodic solution yields an invasion threshold. By use of standard techniques of bifurcation theory, we prove that above this threshold there are periodic oscillations in substrate, prey and predator. Simple cycles may give way to chaos in a cascade of period-doubling bifurcations. Furthermore, by comparing bifurcation diagrams with different bifurcation parameters, we can see that the impulsive system shows two kinds of bifurcations, whose are period-doubling and period-halfing.     

Deep tunneling dominates the biologically important hydride transfer reaction from NADH to FMN in morphinone reductase

The temperature dependence of the primary kinetic isotope effect (KIE), combined temperature-pressure studies of the primary KIE, and studies of the alpha-secondary KIE previously led us to infer that hydride transfer from nicotinamide adenine dinucleotide to flavin mononucleotide in morphinone reductase proceeds via environmentally coupled hydride tunneling. We present here a computational analysis of this hydride transfer reaction using QM/MM molecular dynamics simulations and variational transition-state theory calculations. Our calculated primary and secondary KIEs are in good agreement with the corresponding experimental values. Although the experimentally observed KIE lies below the semiclassical limit, our calculations suggest that approximately 99% of the reaction proceeds via tunneling: this is the first "deep tunneling" reaction observed for hydride transfer. We also show that the dominant tunneling mechanism is controlled by the isotope at the primary rather than the secondary position: with protium in the primary position, large-curvature tunneling dominates, whereas with deuterium in this position, small-curvature tunneling dominates. Also, our study is consistent with tunneling being preceded by reorganization: in the reactant, the rings of the nicotinamide and isoalloxazine moieties are stacked roughly parallel to each other, and as the system moves toward a "tunneling-ready" configuration, the nicotinamide ring rotates to become almost perpendicular to the isoalloxazine ring.