三星体R_（n－p，n，n＋p）（P＝1，2）是强优美树

引入强优美树概念，证明了三星体Ｒ＿［（ｎ－ｐ），ｎ，ｎ＋ｐ］（ｎ为自然数；ｐ＝１．２）是强优美树，从而得到四星体Ｒ＿［（ｎ－ｐ），ｎ，ｎ＋ｐ，ｍ］（ｍ，ｎ为自然数；ｐ＝１，２）是优美树的结果。     

断层相互作用产生同震库仑应力改变分布图像

讨论了同震库仑应力改变的基本含义,以及基于静应力位错理论求解同震库仑应力改变的边界元方法,对与发震断层相互平行和相互垂直两种典型构造模式下,断层相互作用产生的同震库仑应力改变进行了数值模拟研究,分别获取了相应条件下的同震库仑应力改变空间分布图像.结果表明:不同构造模式的断层相互作用,其产生的同震库仑应力改变分布图像存在较大差异,在分析和评价断层相互作用产生的同震库仑应力改变,及其对活动断层地震危险性的影响时,应该充分考虑待评价断层与发震断层之间的空间几何关系、断层的性质和产状等特定的构造条件.     

Constant darkness is a circadian metabolic signal in mammals

Environmental light is the 'zeitgeber' (time-giver) of circadian behaviour. Constant darkness is considered a 'free-running' circadian state. Mammals encounter constant darkness during hibernation. Ablation of the master clock synchronizer, the suprachiasmatic nucleus, abolishes torpor, a hibernation-like state, implicating the circadian clock in this phenomenon. Here we report a mechanism by which constant darkness regulates the gene expression of fat catabolic enzymes in mice. Genes for murine procolipase (mClps) and pancreatic lipase-related protein 2 (mPlrp2) are activated in a circadian manner in peripheral organs during 12 h dark:12 h dark (DD) but not light-dark (LD) cycles. This mechanism is deregulated in circadian-deficient mPer1-/-/mPer2m/m mice. We identified circadian-regulated 5'-AMP, which is elevated in the blood of DD mice, as a key mediator of this response. Synthetic 5'-AMP induced torpor and mClps expression in LD animals. Torpor induced by metabolic stress was associated with elevated 5'-AMP levels in DD mice. Levels of glucose and non-esterified fatty acid in the blood are reversed in DD and LD mice. Induction of mClps expression by 5'-AMP in LD mice was reciprocally linked to blood glucose levels. Our findings uncover a circadian metabolic rhythm in mammals.     

多孔材料测孔仪的研制

本文叙述了测量多孔材料孔径和孔径分布的方法和仪器,测量采用液-液和气-液系统,测量孔径范围内为0.01～几百1μm,为简化仪器结构设计了适用于不同孔径范围的装置。     

微处理机应用系统容错设计之实例分析——温控仪容错设计

在微处理机应用系统容错设计理论的基础上,采用了过程通道、 Ｒ Ａ Ｍ 的备用容错以及系统恢复和重入技术,对温控仪容错进行了设计．     

Effect of Chloride Ion Concentrations on Luminescence Peak Blue Shift of Light-Emitting Diode Using Anti-Solvent Extraction of Quasi-Two-Dimensional Perovskite

In recent years, Perovskite Light-Emitting Diodes(PeLEDs) have received considerable attention in academia. However, with the development of PeLEDs, commercial applications of full-color PeLED technology are largely limited by the progress of blue-emitting devices, due to the uncontrollably accurate composition, unstable properties, and low luminance. In this article, we add Cesium chloride(CsCl) to the quasi-two-dimensional(quasi-2D)perovskite precursor solution and achieve the relatively blue shifts of PeLED emission peak by introducing chloride ions for photoluminescence(PL) and electroluminescence(EL). We also found that the introduction of chlorine ions can make quasi-2D perovskite films thinner with smoother surface of 0.408 nm. It is interesting that the EL peaks and intensities of PeLED are adjustable under different driving voltages in high concentration chlorine-added perovskite devices, and different processes of photo-excited, photo-quenched, and photo-excited occur sequentially with the increasing driving voltage. Our work provides a path for demonstrating full-color screens in the future.     

心理契约组织行为与和谐社会

通过对心理契约含义与特征的介绍,阐述了心理契约组织行为对构建和谐社会的积极作用与反作用,同时在观念、制度、管理方式上对建立和谐社会的平衡心理契约提出了建议.     

水泥砼路面平整度低的因素及提高措施

为更好地提高水泥砼路面的平整度,笔者对水泥砼路面平整度低的因素进行了分析,并提出了提高措施.     

α-唑基-α-芳氧烷基频哪酮(芳乙酮)及其醇式衍生物抗真菌活性的支持向量机研究

采用支持向量机（SVM）算法,将其用于α-唑基-α-芳氧基频哪酮（芳乙酮）及其醇式衍生物抗真菌活性的研究．讨论了该类化合物的量子化学参数、计算核函数及参数的选择和优化问题,建立了抗真菌活性预测的数学模型,结果表明支持向量机可用于该类化合物抗真菌活性的筛选和构效关系（QSAR）的研究．     

基于分水岭变换的彩色细胞图像分割

提出了一种彩色细胞图像的分割方法,重点解决邻接或者重叠的细胞核或者细胞质之间的分割问题。算法主要基于数学形态学方法,首先利用k-均值聚类和直方图上的分水岭变换对像素进行聚类,从而得到细胞图像背景、细胞质和细胞核的粗略估计;然后利用形态学滤波和分水岭变换提取细胞核、细胞质的边界。结果表明:在少量人工干预的情况下,所述算法获得的细胞核、细胞质边界与实际情况比较吻合。对于含有邻接或者重叠的细胞核或者细胞质的图像,算法仍能提取理想的细胞组织边界。