从《新方八阵·固阵》浅窥张景岳固涩之道

"固方之制,固其泄也"。精气血津液,皆是人体精微,是正气的重要组成部分,若外流过多,必将使正气亏虚,卫外失司,招致邪气,治之当以固涩药,急闭门户,保存正气,以存性命之根。然精微之下,必有所因,治之当以治本之药,求其所因,治疾病之根。文章将《新方八阵·固阵》所列方剂分为治遗精、止泄泻、缩小便3个部分,分析其用药特点,结合张景岳学术观点,从固精、止泄、缩泉、善用固涩4个方面探讨张景岳固涩之法,望能指导临床。

变截面梁单元在任意荷载作用下固端内力的统一计算方法

应用奇异函数方法和高斯求积法导出梁单元固端内力的统一计算式,该方法适用于任意变截面单元在任意荷载作用下的固端内力计算,根据导出的计算式易于实现有限单元法的编程计算。大量算例结果表明,该方法将各种荷载的固端内力计算统一,概括面更广,且结果精度在99%以上,完全满足工程计算精度要求。

FREE VIBRATION ANALYSIS AND PHYSICAL PARAMETER IDENTIFICATION OF NON-UNIFORM BEAM CARRYING SPRING-MASS SYSTEMS

To analyze a multibody system composed of non-uniform beam and spring-mass subsystems, the model discretization is carried on by utilizing the finite element method（FEM）, the dynamic model of non-uniform beam is developed by using the transfer matrix method of multibody system（MS-TMM）, the transfer matrix of non-u- niform beam is derived, and the natural frequencies are computed. Compared with the numerical assembly method （NAM）, the results by MS-TMM have good agreement with the results by FEM, and are better than the results by NAM. When using the high precision method, the global dynamic equations of the complex multibody system are not needed and the orders of involved system matrices are decreased greatly. For the investigation on the re- verse problem of the physical parameter identification of multibody system, MS-TMM and the optimization tech- nology based on genetic algorithms（GAs） are combined and extended. The identification problem is exchanged for an optimization problem, and it is formulated as a global minimum solution of the objective function with respect to natural frequencies of multibody system. At last, the numerical example of non-uniform beam with attach- ments is discussed, and the identification results indicate the feasibility and the effectivity of the proposed aop- proach.

叶绿素及其利用前景

绿色的植物覆盖着大地,提供着人类生活所必须的有机物和氧气,美化着人类生活的环境。绿色植物的叶片中含有大量的叶绿体,叶绿体中含有绿色色素,这就是叶绿素。在阳光的作用下,叶绿素能将空气中的二氧化碳和水合成为有机物,同时释放出氧气,这就是光合作用。自1771年发现光合作用以来。

拓市场 促经营 保增长——陕建一季度营业收入增长16%实现开门红

认真贯彻习近平总书记来陕视察的重要讲话精神,面对宏观经济下行压力持续加大的困难,陕建确定了＂固阵地、向外扩、往下沉＂的市场发展战略,加大省内、省外和国外三个市场的拓展力度。 建立省内重点项目信息资源库。对省级和地市重点项目进行分析和筛选,锁定大客户和重点信息,择优落实项目跟进主体单位。今年将在省内选择20个左右有相当经济规模、且发展态势较好的县、区对接合作。

Computer Simulation of Compensation Method for Infrared Focal Plane Array

A major motivation for this work is to investigate a method of computer simulation for compensating fixed pattern noise of the infrared focal plane arrays. A mathematical model of the output signal of focal plane array was established; a compensating algorithm utilizing reference source was derived and simulating programs were designed. The images of compensating process verify the influence of nonuniformity of responsibility and offset on fixed pattern noise. The result show that simulating method of investigating compensation technology for focal plane arrays is feasible, the generated images and methods can be used to the study of image recognition.

Azimuthal cement evaluation with an acoustic phased-arc array transmitter:numerical simulations and field tests

We developed a novel cement evaluation logging tool,named the azimuthally acoustic bond tool（AABT）,which uses a phased-arc array transmitter with azimuthal detection capability.We combined numerical simulations and field tests to verify the AABT tool.The numerical simulation results showed that the radiation direction of the subarray corresponding to the maximum amplitude of the first arrival matches the azimuth of the channeling when it is behind the casing.With larger channeling size in the circumferential direction,the amplitude difference of the casing wave at different azimuths becomes more evident.The test results showed that the AABT can accurately locate the casing collars and evaluate the cement bond quality with azimuthal resolution at the casing-cement interface,and can visualize the size,depth,and azimuth of channeling.In the case of good casingcement bonding,the AABT can further evaluate the cement bond quality at the cementformation interface with azimuthal resolution by using the amplitude map and the velocity of the formation wave.

Properties of frictional bridging in fiber pull-out for fiber-reinforced composites

Stress equilibrium equations, boundary- and continuity-conditions were used to establish a theoretical model of progressive debonding with friction at the debonded interface. On a basis of the minimum complementary energy principle, an expression for the energy release rate G was derived to explore the interfacial fracture properties. An interfacial debonding crite- rion G≥Γi was introduced to determine the critical debond length and the bridging law. Numerical calculation results for fi- ber-reinforced composite SCS-6/Ti-6Al-4V were compared with those obtained by using the shear-lag models.

Viscosity Dependence of Solid-State CD Peaks of Chiral Schiff Base Ni（ll） and Cu（ll） Complexes in PMMA Soft Mater Matrices

Two new chiral Schiff base acacen-derivative nickel（II） and copper（II） complexes have been prepared and characterized with IR, electronic, and CD spectra and X-ray crystallography. So-called artifact peaks of solid-state CD spectra due to restricted to rotate freely of molecules appeared at about 334 and 460 nm for nickel（II） and copper（II） complexes. Changes of intensity of the peaks have been investigated in different matrices such as solid-state （microcrystals or KBr pellets）, PMMA cast films and acetone solutions of various concentrations and pure acetone solutions. Although restricted orientation of molecules in rigid matrices leads to increase the peak intensity toward negative and positive optical rotation for nickel（II） and copper（II） complexes, respectively, the degree of increasing intensity depends on not concentration but viscosity of polymer solutions. Therefore, the artifact CD peaks of solid-state can act as an indicator of environmental viscosity of soft mater matrices.

Global exponential stability of interval neural networks with a fixed delay

The problem of the global exponential robust stability of interval neural networks with a fixed delay was studied by an approach combining the Lyapunov-Krasovskii functional with the linear matrix inequality (LMI). The results obtained provide an easily verified guideline for determining the exponential robust stability of delayed neural networks. The theoretical analysis and numerical simulations show that the results are less conservative and less restrictive than those reported recently in the literature.

Dynamic unbalance detection of cardan shaft in high-speed train based on EMD-SVD-NHT

Contrary to the aliasing defect between the adjacent intrinsic model functions(IMFs) existing in empirical model decomposition(EMD), a new method of detecting dynamic unbalance with cardan shaft in high-speed train was proposed by applying the combination between EMD, Hankel matrix, singular value decomposition(SVD) and normalized Hilbert transform(NHT). The vibration signals of gimbal installed base were decomposed through EMD to get different IMFs. The Hankel matrix constructed through the single IMF was orthogonally executed through SVD. The critical singular values were selected to reconstruct vibration signs on the basis of the key stack of singular values. Instantaneous frequencys(IFs) of reconstructed vibration signs were applied to detect dynamic unbalance with shaft and eliminated clutter spectrum caused by the aliasing defect between the adjacent IMFs, which highlighted the failure characteristics. The method was verified by test data in the unbalance condition of dynamic cardan shaft. The results show that the method effectively detects the fault vibration characteristics caused by cardan shaft dynamic unbalance and extracts the nature vibration features. With comparison to the traditional EMD-NHT, clarity and failure characterization force are significantly improved.

A sensitive method to detect the hepatitis B virus mutations by using solid phase PCR on oligonucleotide array

A sensitive method based on solid phase PCR on oligonucleotide array was established to detect two point mutations 1896G-A and 1901G-A in hepatitis B virus (HBV) DNA, in which 6 probes including these two point mutations were immobilized on modified glass slides through 5' terminal linker, while the 3' terminal was made to be free. The mutated loci were designed to locate on the last nucleotides of 3' terminal respectively, and the positive control probes lacked the last nucleotide of 3' terminal in comparison with the probes used for detection. Probes fixed on oligonucleotide array were also the solid phase amplification primers. One pair of liquid primers was used to amplify the short template product from whole HBV DNA. Using target DNA as template, the solid primers were extended under the action of Taq DNA polymerase and incorporated with Cy-3dCTP as marker. During the thermal cycling reaction, probes served as solid phase amplification primers and amplification products bound to the oligonucleotide array, which could be visualized by incorporation with fluorescent dyes. After amplification, the oligonucleotide array was washed, performed with laser scanning, and then used for quantitative analysis to obtain the information for mutations. The hybridization results were compared with DNA sequencing. It was demonstrated that in case of sample A, the ratios of fluorescence intensities in wide type and in the mutated types of 1896G-A and 1901G-A mutations in HBV were 3.81:1 and 1:3.79 respectively, while, in case of sample B, those were 1:2.89 and 1:3.03 respectively, indicating the presence of point mutations in these two loci. These results correlated to those obtained from DNA sequencing analysis in which the fluorescence intensity ratios in wide type and in the mutated types of 1996G-A and 1901D-A mutations in HBV were 1.26:1 and 1.67:1 respectively. From the above observations, it is evident that the method using solid phase PCR based on oligonucleotide array appears to be a sensitive and promising way to detect mutations with low-density.

Design and Verification of FPGA-Based Applications in Nuclear Power Plants

Nuclear industries have faced the unfavorable circumstance such as components obsolescence and aging of instrumentation and control system, therefore, nuclear society is striving to resolve this issue fundamentally. Various studies have been conducted to address components obsolescence of instrumentation and control system. Intuitively FPGA （field programmable gate arrays） technology is replacing the high level of micro-processor type equipped with various software and hardware which causes acceleration of the aging and obsolescence in I ＆ C （instrumentation and control） system in nuclear power plants. FPGAs are highlighted as an alternative means for obsolete control systems. When engineers design the control system of NPPs （nuclear power plants） with FPGAs, it is important to meet the system development life cycles and conduct the verification and validation activities regarding to FPGA-based applications for use in NPPs. Because the verification and validation process is more important than the design process, engineer should consider the characteristics of FPGA, HDL （hardware description language） programming, faults mode, and optimization technique. And also these characteristics should be reflected in verification and validation activities. As a minimum requirement, system designers require that HDL-programmed applications should be developed in accordance with system development life cycle and HPD design process. In the verification and validation processes, a review, test, and analysis activities should be properly conducted.

高原对唾液醛固酮和糖皮质激素浓度的影响

受试着为6名健康青年男性(20～24岁),于海平面和进入肯尼亚山(4 459m)后的第1～2、8～9～及15～16天,每隔1小时收集1次唾液。测量其内醛固酮(SA)及糖皮质激素(SGC,包括皮质醇和脱氢皮质酮)的浓度,同时采集静脉血,分析血中两种激素的含量。结果发现,不管在海平面还是高原,血浆和唾液的醛固酮及糖皮质激素浓度均具有高度相关(r值分别为0.91和0.75,p【0.01);进入4 450m后,首次收集的唾液SA的平均浓度约为海平面值的50％(P【0.05),而且在高原停留的整各时期内(2周)基本恒定在这一水平;然而,SA的浓度随时间(小时)变化的模式与海平面条件下的相比主要差别是:正常情况下在海平面起床后最初几小时出现的SA明显增加的特点。

郑州市教科文卫体工会创建“星级”基层工会

河南省郑州市教科文卫体工会吕玉明报道日前,郑州市教科文卫体工会下发《关于在全系统开展"星级"基层工会达标创优争星晋级活动的通知》,扎实推进基层工会达标创优争星晋级活动。"三星"级基层工会必须通过"六建"达到"八有"标准,即建组织、建班子、建队伍、建机制、建品牌、建阵地;有机构、有队伍、有承诺、有阵地、有制度、有经费、有档案、有活力,并连续两年获得年终工会工作奖励。"四星"

The Maximum Jump Number of (0, 1)-Matrices of Order 2k - 2 with Fixed Row and Column Sum k

In 1992, Brualdi and Jung first introduced the maximum jump number M(n, k), that is, the maximum number of the jumps of all (0, 1)-matrices of order n with k 1's in each row and column, and then gave a table about the values of M(n, k) when 1 ≤ k ≤ n ≤ 10. They also put forward several conjectures, including the conjecture M(2k - 2, k) = 3k - 4 + [k-2/2]. In this paper, we prove that b(A) ≥ 4 for every A ∈ A(2k - 2, k) if k ≥ 11, and find another counter-example to this conjecture .

Stability range of tilted dendritic arrays during directional solidification

The stability range of primary spacing of the tilted dendritic arrays in directional solidification has been studied by quantitative phase-field simulations. Results show that both the real growth direction and morphological shapes of dendritic arrays change with the primary spacing for different misorientation angles(θ0). It has been found that the lower limit of primary spacing is independent of θ0, but the upper limit of primary spacing is strongly influenced by that. The two kinds of tertiary branching instabilities result in different behaviors of the variation of the upper limit with misorientation angle for different pulling velocities.

Cellular Automata Model for Elastic Solid Material

The Cellular Automaton(CA) modeling and simulation of solid dynamics is a long-standing difficult problem.In this paper we present a new two-dimensional CA model for solid dynamics.In this model the solid body is represented by a set of white and black particles alternatively positioned in the x-and y-directions.The force acting on each particle is represented by the linear summation of relative displacements of the nearest-neighboring particles.The key technique in this new model is the construction of eight coefficient matrices.Theoretical and numerical analyses show that the present model can be mathematically described by a conservative system.So,it works for elastic material.In the continuum limit the CA model recovers the well-known Navier equation.The coefficient matrices are related to the shear module and Poisson ratio of the material body.Compared with previous CA model for solid body,this model realizes the natural coupling of deformations in the x-and y-directions.Consequently,the wave phenomena related to the Poisson ratio effects are successfully recovered.This work advances significantly the CA modeling and simulation in the field of computational solid dynamics.