基于“双超”专项整治的施工企业物资消耗控制对策分析

在节能减排政策的号召下,施工企业以项目“双超”问题作为专项整治为切入点,重点从写项目物资成本管理环节入手,针对物资消耗管理漏洞和成本控制问题,提出健全完善物资消耗管理的体制机制,创新和优化工作方式方法等建议,以期逐步形成了“标准统一、责任明确、全面推进、常态管理”的物资消耗管理体系,全面实现施工企业的绿色、节能、低耗、可持续发展。

水文模拟中壤中流计算方法的研究

半干旱半湿润地区径流预报皆有超持与超渗的产流特征,是水文预报中的难点问题,而其中壤中流的计算又是关键,直接关系到模拟的精度。在分析"双超"模型、新安江等产流模型基础上,注意到壤中流可能产生于非饱和土壤及流域空间产流差异的实际,借鉴各模型处理壤中流的优点,用系统模型的思想,对半干旱半湿润地区的壤中流计算模式进行了改进。从实际模拟效果看,改进后的壤中流计算模拟精度大为提高。改进后的计算方法不仅适用于"双超"模型,同时也适用于其它类似模型。

新型危险驾驶罪的理解与适用

2015年8月通过的《刑法修正案(九)》规定,在道路上驾驶机动车从事校车业务或者旅客运输,严重超过额定乘员载客,或者严重超过规定时速行驶以及违反危险化学品安全管理规定运输危险化学品,危及公共安全的,以危险驾驶罪论处。"双超"和"违规运输危险化学品"型危险驾驶行为入刑具有正当性。对于"双超"型危险驾驶罪,行为人从事的必须是校车业务或者旅客运输,且严重超员或超速。至于校车和客运车辆是否具有营运资格,驾驶人员是否具有驾驶资格不影响本罪的认定。对于"违规运输危险化学品"型危险驾驶罪,必须存在违规运输行为,并且危及公共安全。其中,危及公共安全是划分罪与非罪的重要界限,是判断违规运输行为是否具有抽象危险的参考依据。

危险驾驶罪立法修正的解读与评析

《刑法修正案(九)》对危险驾驶罪进行了修正,将从事校车业务或旅客运输中的严重超载、超速行为和违规运输危险化学品的行为纳入了规制范围。从强化法益保护的角度来讲,这一举措是具有正当性的。但仍存在一些不足之处,主要表现为危险驾驶罪的规制范围依然较为狭窄,以及法定刑的设置还欠缺合理性。因此,应对其进行更进一步的完善工作。

Application of Composite Ultrafine Particles in ER Fluids

Aim To obtain a kind of electrorheological (ER) flind with high comprehensive properties in order to satisfy the needs of engineering application. Methods A new type of dispersed phase── composite ultrafine particles (UFP) was obtained by the method of microemulsion, which was used to mix with silicon oil. aam electroinduced stress and apparent viscosity of the ER fluids with three different volume fractions were tested under the conditions of different temperatures, electric fields and shear rates. Results A series of systematic tests show that the new type of ER fluids with volume fraction of 30% possesses obvious ER effect. Conclusion The double layers polarization plays an important role in ER effect.

Fabrication and Simulation of an AlGaAs/GaAs Ultra-Thin Base NDR HBT

A novel mesa ultra-thin base AlGaAs/GaAs HBT is designed and fabricated with wet chemical selective etch technique and monitor electrode technique. It has a particular and obvious voltage-controlled NDR whose PVCR is larger than 120. By use of device simulation,the cause of NDR is that increasing collector voltage makes the ultrathin base reach through and the device transforms from a bipolar state to a bulk barrier state. In addition, the simulated cutoff frequency is about 60-80GHz.

Compact ultra-wideband monopole antenna with dual-band notched function

A kind of compact ultra wideband （UWB） monopole antenna with dual-band notched function is presented.The proposed antenna,using ＂C＂ and ＂L＂ apertures embedded in the annular ring patch and ground patch,gets two bandnotched characteristics in WiMAX3.5 GHz and WLAN 5.5 GHz.The size of antenna is 24 mm × 36 mm × 1.6 mm.The simulation results show that waveband range of the antenna is 2.7-10.6 GHz for S11 ＜-10 dB and the band-notched wavebands are 3.2-3.8 GHz and 5.1-6 GHz.So it has miniaturization,ultra-band and band-notched characteristics.Meanwhile,the radition pattern,directivety and gain are perfect,which meets the practical need.

Faster-than- Nyquist rate communication via convolutional neural networks- based demodulators

A demodulator based on convolutional neural networks（ CNNs） is proposed to demodulate bipolar extended binary phase shifting keying（ EBPSK） signals transmitted at a faster-thanNyquist（ FTN） rate, solving the problem of severe inter symbol interference（ ISI） caused by FTN rate signals. With the characteristics of local connectivity, pooling and weight sharing,a six-layer CNNs structure is used to demodulate and eliminate ISI. The results showthat with the symbol rate of 1. 07 k Bd, the bandwidth of the band-pass filter（ BPF） in a transmitter of 1 k Hz and the changing number of carrier cycles in a symbol K = 5,10,15,28, the overall bit error ratio（ BER） performance of CNNs with single-symbol decision is superior to that with a doublesymbol united-decision. In addition, the BER performance of single-symbol decision is approximately 0. 5 d B better than that of the coherent demodulator while K equals the total number of carrier circles in a symbol, i. e., K = N = 28. With the symbol rate of 1. 07 k Bd, the bandwidth of BPF in a transmitter of 500 Hz and K = 5,10,15,28, the overall BER performance of CNNs with double-symbol united-decision is superior to those with single-symbol decision. Moreover, the double-symbol uniteddecision method is approximately 0. 5 to 1. 5 d B better than that of the coherent demodulator while K = N = 28. The demodulators based on CNNs successfully solve the serious ISI problems generated during the transmission of FTN rate bipolar EBPSK signals, which is beneficial for the improvement of spectrum efficiency.

Enhanced corrosion resistance of micro-arc oxidation coated magnesium alloy by superhydrophobic Mg-Al layered double hydroxide coating

To further enhance the corrosion resistance of the porous micro-arc oxidation(MAO) ceramic layers on AZ31 magnesium alloy, superhydrophobic Mg-Al layered double hydroxide(LDH) coating was fabricated on MAO-coated AZ31 alloy by using in-situ growth method followed by surface modification with stearic acid. The characteristics of different coatings were investigated by XRD, SEM and EDS. The effect of the hydrothermal treatment time on the formation of the LDH coatings was studied. The results demonstrated that the micro-pores and cracks of MAO coating were gradually sealed via in-situ growing LDH with prolonging hydrothermal treating time. Electrochemical measurement displayed that the lowest corrosion current density, the most positive corrosion potential and the highest impedance modulus were observed for superhydrophobic LDH/MAO coating compared with those of MAO coating and LDH/MAO coating. Immersion experiment proved that the superhydrophobic LDH/MAO coating with the active anti-corrosion capability significantly enhanced the long-term corrosion protection for MAO coated alloy.

Differentially Expressed Proteome of Microcystis under Short-time Ultrasonic Stress

This study was conducted to explore the regulation mechanism for key protein expression. The Microcystis treated by short-time ultrasonic wave was select-ed to analyze the total protein based on 2-DE. The results showed that there were 71 up-regulated protein spots, 56 down-regulated protein spots, 54 new protein spots and 21 protein spots disappeared under short-time ultrasonic stress. Eight dif-ferential proteins were chosen for further MALDI-TOFTOF/MS analysis, and the re-sults showed that 2 unknown proteins and 6 functional proteins were detected. These proteins were relevant to some physiological processes, such as antioxidation and anti-inflammatory process, phosphate synthesis and electron transfer, which is beneficial to the metabolic balance and self-protection under short-time ultrasonic stress.

Super-connected and Hyper-connected Cubic Bi-Cayley Graphs

Let G be a finite group and let S（possibly, contains the identity element） be a subset of G. The Bi-Cayley graph BC（G, S） is a bipartite graph with vertex set G × { 0,1} and edge set {（g, 0） （sg,1） ： g∈ G, s ∈ S}. A graph is said to be super-connected ff every minimum vertex cut isolates a vertex. A graph is said to be hyper-connected if every minimum vertex cut creates two components, one of which is an isolated vertex. In this paper, super-connected and/or hyper-connected cubic Bi-Cayley graphs are characterized.

Quasi- Einstein Hypersurfaces in a Hyperbolic Space

In this paper,we consider quasi Einstein hypersurfaces in a hyperbolic space. The following theorem is obtained. Theorem Quasi Einstein hypersurfaces of a hyperbolic space are of constant curvature,where the dimension is large enough.

Fabrication of cobalt aluminum-layered double hydroxide nanosheets/carbon spheres composite as novel electrode material for supercapacitors

A new design route was presented to fabricate cobalt aluminum-layered double hydroxide(CoAl-LDH)thin layers whichgrow on carbon spheres(CSs)through a growth method.The CoAl-LDH thin layers consist of nanoflakes with a thickness of20nm.The galvanostatic charge-discharge test of the CoAl-LDH/CSs composite shows a great specific capacitance of1198F/g at1A/g(based on the mass of the CoAl-LDH/CSs composite)in6mol/L KOH solution,and the composite displays an impressive specificcapacitance of920F/g even at a high current density of10A/g.Moreover,the composite remains a specific capacitance of928F/gafter1000cycles at2A/g,and the specific capacitance retention is84%,indicating that the composite has high specific capacitance,excellent rate capability and good cycling stability in comparison to pristine CoAl-LDH.

Tunneling Conductance and Magnetoresistance in Ferromagnet／Ferromagnet／d-WaveSuperconductor Double Tunnel Junctions

The tunneling conductance and tunneling magnetoresistance(TMR)are investigated in ferromagnet/insulator/ferromagnet/insulator/d-wave superconductor(FM/I/FM/I/d-wave SC)structures by applying an extended Blonder-Tinkham-Klapwijk(BTK)approach.We study the effects of the exchange splitting in the FM, the magnetic impurity scattering in the thin insulator interface of FM/I/FM,and noncollinear magnetizations in adja- cent magnetic layers on the TMR.It is shown(1)that the tunneling conductance and TMR exhibit amplitude-varying oscillating behavior with exchange splitting,(2)that with the presence of spin-flip scattering in insulator interface of FM/I/FM,the TMR can be dramatically enhanced,and(3)that the TMR depends strongly on the angle between the magnetization of two FMs.

Bismaleimide Modified by Allyl Novolak for Superabrasives

A novel thermosetting resin system for superabrasives based on novolak and bismaleimide （BMI） was developed. The novolak resin was allylated and then copolymerized with BMI. The structure of allyl novolak and reaction mechanism were analyzed by FFIR. Thermal and mechanical properties were characterized by using com- prehensive thermal analyzer （DSC-TG） and strength tester, respectively. The results showed that high molecular weight of novolak was advantageous for heat-resistance, but was unfavorable for the bending strength. High allyl content improved the heat-resistance but lowered the bending strength. When the molecular weight of novolak was 450 and allyl content was 50%, the best resin system with good heat-resistance and bending strength was obtained. It was suitable for the manufacturing of superabrasive tools.

Efficacy of intramuscular diclofenac and fluid replacement in prevention of post-ERCP pancreatitis

AIM： TO assess the efficacy of intramuscular diclofenac and fluid replacement for prevention of post-endoscopic retrograde cholangiopancreatography （ERCP） pancreatitis.METHODS： A prospective, placebo-controlled study was conducted in 80 patients who underwent ERCP. Patients were randomized to receive parenteral diclofenac at a loading dose of 75 mg followed by the infusion of 5-10 mL/kg per hour isotonic saline over 4 h after the procedure, or the infusion of 500 mL isotonic saline as placebo. Patients were evaluated clinically, and serum amylase levels were measured 4, 8 and 24 h after the procedure.RESULTS： The two groups were matched for age, sex, underlying disease, ERCP findings, and type of treatment. The overall incidence of pancreatitis was 7.5% in the diclofenac group and 17.5% in the placebo group （12.5% in total）. There were no significant differences in the incidence of pancreatitis and other variables between the two groups. In the subgroup analysis, the frequency of pancreatitis in the patients without sphincter of Oddi dysfunction （SOD） was significantly lower in the diclofenac group than in the control group （ρ = 0.047）.CONCLUSION： Intramuscular diclofenac and fluid replacement lowered the rate of pancreatitis in patients without SOD.

Anisotropic Biquadratic Finite Element with Some Natural Superconvergence Results

The paper studies the convergence and the superconvergence of the biquadratic finite element for Poisson＇ problem on anisotropic meshes. By detailed analysis, it shows that the biquadratic finite element is anisotropically superconvergent at four Gauss points in the element. Key words：

A Wide-Spaced Dual-Band Metamaterial Absorber Based on 2.5D Frequency Selective Surfaces and Magnetic Material

By applying meander-line for electrical loss and magnetic material for magnetic loss,we present a metamaterial absorber which is wide-spaced and dual-band(1.35—2.24 GHz and 10.37—12.37 GHz).The novelty of this study mainly lies in a combination of two kinds of losses to consume electromagnetic energy,which can get better dual-band absorption.In the electrical loss layer,meander-line structures are printed on both surfaces of the substrate and the structure series with resistors.Considering the need for miniaturization,we connect eight metallic vias with these meander-line areas to form a compact 2.5-dimensional(2.5D)structure.The dimension of the unit cell is miniaturized to be 5.94 mm×5.94 mm,about 0.035λat the center frequency of the lower absorption band.In the magnetic loss layer,the 0.4 mm thick magnetic material is employed on a metallic ground plane.In addition,the complex permittivity and complex permeability of the magnetic material are given.Finally,we fabricate a prototype of the proposed absorber and obtain a measurement result which is in good agreement with the full-wave simulation result.

Weak-Coupling Theory for Low-Frequency Periodically Driven Two-Level Systems

We generalize the Wu-Yang strong-coupling theory to solve analytically periodically driven two-level systems in the weak-coupling and low-frequency regimes for single- and multi-period periodic driving of continuous-wave-type and pulse-type including ultrashort pulses of a few cycles.We also derive a general formula of the AC Stark shift suitable for such diverse situations.

Mechanism of double-stranded supercoiled DNA cleavage induced by RNA N-glycosidase

Plant RNA N-glycosidase specifically hydrolyzes the N-C glycosidic bond of a conserved adenosine in the sarcin/ricin domain of the largest RNA in ribosome, releasing an adenine base and thus inhibiting protein synthesis. This substrate specificity was challenged later by discovery that various RNA derivatives and DNAs, especially the double-stranded supercoiled DNA could be used as substrate by RNA N-glycosidase. Thus, it was argued whether the DNA-cleaving activity was an intrinsic feature of RNA N-glycosidase or it was contaminated by DNase. In this article, several lines of evidence are presented to show that RNA N-glycosidase can really release the adenine base from the double-stranded supercoi/ed DNA. It was proposed that the cleavage mechanism of supercoiled DNA was the phosphodiester bonds in enzymatically deadenylated regions of the supercoiled DNA would become fragile and liable to produce nicked or linear form owing to the existence of tension in the supercoiled DNA molecule, not direct result of enzymatic action on the phosphodiester bond.