NaHSO3对草莓生理学的影响

在草莓花期喷施２００ｍｇ．Ｌ＾－１的光呼吸抑制剂ＮａＨＳＯ３，经测试，草莓植株叶绿素含量增加，光合速率增强，比叶重提高，硝酸还原酶活性受抑制，单果重增加。草莓果实品质明显改善，可溶性总糖含量增加２１％，提早成熟４－７天，亩产量增加１２％。     

基于Unity3D的智能家居综合管理平台的研究与实现

利用Unity3D技术,对智能家居综合管理平台进行了优化,可根据用户的实际需要对空间进行建模,放弃了传统的二维平面管理平台,利用Unity3D对所需模型进行建模并且在所建立空间模型中实现了漫游,用户可对空间视野范围内的可控单元进行操作,实现了多目标实时控制.同时,虚拟现实技术其自身的特性增加了用户在使用时的沉浸感和互动性.     

Metformin targets liver tumor-initiating cells through the PI3K/Akt/mTOR survival pathway

Liver tumor-initiating cells （T-ICs） are thought to be inherently resistant to the cytotoxic effects of chemo- therapy, and can self-renewal and maintain tumor-initiating potential. Therefore, effective anticancer research strategies should target the unique properties of T-ICs. In this study, we found that metformin, a first-line drug of choice for the treatment of type 2 diabetes, inhibited liver T-ICs both in vivo and in vitro. Metformin inhibited the formation of hepato- spheres and epithelial-specific antigen-positive （ESA, CD133＋） cell colonies by hepatocellular carcinoma （HCC） cell lines. Metformin also downregulated the expression of several T-IC-related genes which are involved in the signal- ing pathways, governing the self-renewal, proliferation and differentiation of T-ICs. Furthermore, the targeting of liver T-ICs by metformin was PI-3-kinase-Akt-mTOR （PI3K/Akt/ mTOR）-pathway dependent. The PI3K/Akt/mTOR inhibitorLY294002 and rapamycin abolished the inhibitory effect of metformin on CD133＋ cells, and the PI3K/Akt/mTOR stimulator EGF promoted the inhibitory effect of mefformin on CD 133＋ cells. Metformin also dramatically decreased the tumor volume and number of CD133 expressing tumor cells in a xenograft mouse model. Mefformin exerted a synergistic effect with cisplatin to target both T-ICs and non-T-ICs, and resulted in the smallest tumor volume and lowest number of CD133 expressing tumor cells. This study indicates that the antidiabetic drug metformin could potentially be used in combination therapy with chemotherapeutic agents to improve the treatment of liver cancer.     

无线通信网络发展趋势研究与分析

从技术和应用角度分析了3G网络的关键技术和特点,研究了3G与WLAN融合建网的可能性、必要性、主要技术和网络的结构,讨论了下一代无线网络的发展方向和趋势。     

东北地区发展林蛙养殖业的探讨

本文介绍了东北地区林蛙的生活习性，养殖方式和方法。对保护林蛙资源，提高蛙农业效益，促进本地经济进行了探讨。     

分子轨道近似在八面体共价晶体中3d过渡金属离子轨道角动量和旋—轨耦合中的

用分子轨道近似推导了3d过渡金属离子在八面体晶体中轨道角动量和旋－轨耦合矩阵，同时得到了这些矩阵元与3d离子在纯晶体场近似下的矩阵之间的关系。通过以上矩阵元和关系可以很容易地计算3d离子在八面体晶体中的旋－轨、自旋－自旋和塞曼作用矩阵。     

大颗粒细水雾测量中光学系统布局的数值实验研究

本文通过计算模拟和实验研究，用三维ＡＰＶ（ＡｄａｐｔｉｖｅＰｈａｓｅ／ＤｏｐｐｌｅｒＶｅｌｏｃｉｍｅｔｅｒ）系统对雾场中大粒子的特性参数进行了测量，对三维ＡＰＶ的光路系统进行了选择设定。     

噻唑烷并手性恶唑硼烷催化剂结构和性质的量子化学研究

采用量子化学从头计算方法研究了噻唑烷并手性恶唑烷催化剂及其硼烷加合物的结构和性质，选用Hartree-Fock方法从6-31g基组下进行了全优化计算，并计算了催化剂其加合物的红外振动光谱，催化剂具有扭曲的椅式构型，与硼烷在N原子处配位形成加合物，反应是放热的，加合物的形成，一方面使得催化剂上B原子所带正电荷增加，有利于与酮羰基氧的配位反应进行；另一方面使得BH3中B-H键被削弱，有利于后续反应中H从BH-3到酮羰基碳的转移，从而增强了催化反应的活性。     

江油地区含硫酸盐岩浅层地下水中CaCO3析出的化学热力学机理

含硫酸盐岩浅层地下水一般存在于该矿物的溶孔与裂缝之中，同时它的表面又有大量的ＣａＣＯ３ 析出．本文仅从化学热力学的角度解释这一特征地貌的形成     

Investigation of microenvironment-depended photoluminescence in Eu3+-implantation of GaN

GaN thin films grown on sapphire were implanted by Eu~3+ with three different fluences (5.0×10~14 , 2.5×10~15 and 5.0×10~15cm~-2 ). The photoluminescence (PL) spectra show that, after annealing, the samples exhibit strong emission at around 622.0 nm under 325 nm laser excitation. The intensity of this emission increases by one order of magnitude after annealing at from 600 ℃ to 900 ℃. Moreover, it increases less than 2 times when the fluence increases from 5×10~14 cm~-2 to 5×10~15 cm~-2 for the sample annealing at 900 ℃. The PL emission peaks around 622 nm of samples annealing at 900 ℃ can be well clarified by Gaussian fitting into 620.2, 622.0 and 625.0 nm, which are due to the Eu~3+ related with defects, Eu~3+ occupied at substitutional positions of Ga, and that located at interstitial sites, respectively. It shows that the different microenvironments and positions of Eu~3+ are responsible for these peaks, and especially the defects introduced by implantation play an important role in the behavior of the PL because they set up an energy transmission bridge from exotic photons to Eu~3+ .