Experimetal Study on Load Equilibration and Vibration Reduction in 3-Ring-Gear Reducer

Following the principle of elastic floating compensation,this paper presentS a new metalelastic ring for load equilibration and vibration reduction in 3-ring-gear reducer,and design andfabrivcation of a metal elastic ring for SCH 3-ring-gear reducer.Comparison tests run with 3-ring-gear reducers without or with the metal elastic ring show satisfactory loadequilibration and vibration reduction can be achieved with the metal clastic ring,and themetal elastic ring is a good solution for the problem of unequilibrated load and excessivevibration from which 3-ring-gear reducers suffered long.This will further the improve-ment of design and application of 3-ring-gear reducers in both theory and practice.

Chemical Indicator of Spinel During Partial Melting and Subsolidus Equilibration of Mantle Peridotite:Experimental Study and Application to Natural Rocks

Systematic experimental studies on partial melting and subsolidus equilibration of three reconstituted spinel-peridotites have been carried out at temperatures ranging from 1000 to 1380℃ and pressures of 1.0 and 1.5 GPa. The results shows (1) during partial melting, Mg# [=Mg/(Mg+Fe)]and Cr# [=Cr/(Cr-Al)]of spinel increase with an increase in degrees of melting) (2) during subsolidus equilibration, with increasing temperatures, Mg# of spinel increases but Cr# of spinel remains almost unchanged in dunite and increases slightly in Iherzolite and harzburgite. The negative and quasi-linear Mg# -Cr# correlation of spinel represents an isotherm of total non-equilibrium. The same results have been obtained by means of mathematical modelling. It is also proved by Mg# -Cr# correlation of spinel in natural peridotites. As a result of the spinel subsolidus equilibration, only variation of Cr# of spinel is limited, and then Cr# of spinel can be used to estimate the relative degree of melting undergone by host rocks. The bigger Cr# of spinel is, the higher the degree of melting will be. By contrast, during crystallization magma, Mg# and Cr# of spinel decrease with decreasing temperatures. Likewise, Cr# of spinel in basalts may be used to indicate the feature of Cr2O3/Al2O3 of magma, and the compositional zoning of spinel may be used to study the evolution of magma (cooling rate and contamination).

Comparison of ZnO Films Grown on before- and after-vapor Transport Equilibration (VTE) LiAlO_2 Substrates by Pulsed Laser Deposition (PLD)

About φ45 mm LiAlO2 single crystal was grown by Czochralski （Cz） technique. However, the full-width at half-maximum （FWHM） value was high to 116.9 arcsec. After three vapor transport equilibration （VTE） processes, we can obtain high-quality LiAlO2 slice with the FWHM value of 44.2 arcsec. ZnO films were fabricated on as-grown slices and after-VTE ones by pulsed laser deposition （PLD）. It was found that ZnO films on the two slices have similar crystallinity, optical transmittance and optical band gap at room temperature. These results not only show that LAO substrate is suitable for ZnO growth, but also prove that the crystal quality of LAO substrate slightly affects the structural and optical properties of ZnO film.

THE INFLUENCE OF SUBSTITUENT ELECTRONIC EFFECT ON ETHYLENE OLIGOMERIZATION ACTIVITIES OF BIS(IMINO)PYRIDYL Fe(Ⅱ) CATALYSTS:A COMBINED MOLECULAR MECHANICS AND CHARGE EQUILIBRATION METHOD

Bis(imino)pyridyl Fe(Ⅱ) complexes are important catalysts in ethylene oligomerization for preparingα-olefins. The metal net charge-activity relationship of bis(imino)pyridyl Fe(Ⅱ) complexes was investigated by molecular mechanics (MM) and net charge equilibration(QEq) method with modified Dreiding force field.It was found that metal net charge was in reverse ratio to ethylene oligomerization activity.Electron-donor substituents with less steric hindrance to the central metal were favorable to Fe complex act...

γ-LiAlO_2 Single Crystal Grown by Czochralski Technique and Modified by Vapor Transport Equilibration (VTE) Technique

Large-sized （～2 inch, 50.8 mm） γ-LiAlO2 single crystal has been grown by conventional Czochralski （Cz） method, but the crystal has a milky, dendriform center. The samples taken from transparent and milky parts were ground and examined by X-ray diffraction. All diffraction peaks could be indexed in γ-LiAlO2. The crystal quality was characterized by X-ray rocking curve. The full-width at half-maximum （FWHM） values are 116.9 and 132.0 arcsec for transparent and milky parts, respectively. The vapor transport equilibrium （VTE） technique was introduced to modify the crystal quality. After 1000℃/48 h, 1100℃/48 h, 1200℃/48 h VTE processes, the FWHM values dropped to 44.2 and 55.2 arcsec for transparent and milky part, respectively. The optical transmission of transparent part was greatly enhanced from 85% to 90%, and transmission of milky part from 75% to 80% in the range of 190~1900 nm at room temperature. When the VTE temperature was raised to 1300℃, the sample cracked and FWHM values of transparent and milky parts were increased to 55.2 and 80.9 arcsec, respectively. By combining Cz technique with VTE technique, large-sized and high quality γ-LiAlO2 crystal can be obtained.

Study on charge equilibration time of highly charged ions in carbon foils

Charge state distribution of 0.8MeV/u uranium ions after transmission through a thin carbon foil has been studied. It is observed that the charge state distribution is equilibrated after the uranium ions have passed through a 15μg/cm^2 carbon foil. The equilibrated average charge state is 33.72 and the charge equilibration time of uranium ions in carbon foil is less than 5.4fs.

Heating, Cooling, and Equilibration of an Interacting Many-Fermion System

We discuss the process of equilibrium’s attainment in an interacting many-fermions system linked to a heat reservoir, whose temperature T is subject to a short-time disturbance of total duration 2τ. In this time-interval, its temperature increases up to a maximum value , cooling off afterward (also gradually) to its original value TM. The process is described by a typical master equation that leads eventually to equilibration. We discuss how the equilibration process depends upon 1) the system’s fermion-number, 2) the fermion-fermion interaction’s strength V, 3) the disturbance duration 2τ, and finally 4) the maximum number of equations N of the master equation.

Investigations on the Possible Re-equilibration of Aqueous Fluid Inclusions in Barite:A Study of Barite and Calcite from the Hutti Gold Deposit,Karnataka,India

Re-equilibration of fluid inclusions in crystals takes place by loss or gain of solvents and solutes from fluid inclusions and by changes in their volumes. Volume change of fluid inclusions are primarily dictated by elastic properties and available slip planes of host crystals. In the present study, the phase-behavior of fluids entrapped in co-precipitated calcite and barite is studied. While calcite contains only biphase fluid inclusions, barite has predominantly monophase fluid inclusions. Fluid inclusion petrography, microthermometry and leachate analysis are used to establish the nature of entrapped fluids and entrapment temperature is substantiated through independent sulfur isotope geothermometry using coexisting barite and pyrite. Phase transitions in the monophase fluid inclusions in barite are explained in terms of over-pressuring of fluids in these fluid inclusions relative to fluids entrapped in calcite owing to the low bulk modulus of barite.

Intermediate mass dilepton production during the chemical equilibration of quark gluon plasma

The production of dileptons from the chemically equilibrating quark gluon plasma in the intermediate mass region has been studied. Comparing with the calculated results based on the thermodynamic equilibrium system of quark gluon plasma, it has been found that the quark phase of the chemically equilibrating system gives rise to an even larger enhancement of the dileptons production. Therefore, such an enhancement of dilepton production may signal the formation of quark gluon plasma.

Probing the Non-equilibration Component of Tilting Spin Mode

-The probabilities PNCNE of non-equilibration component of tilting spinmode have been extracted from the experimental fragment anisotropies for thesystems of 16O+232Th,19F+232Th,and 16O+238U.It is found that as a function ofBf（〈L〉）/Tsad,the values of PNCNF observed experimentally and expected on the ba-sis of fission before equilibration model have opposite trends.

基线腹膜转运特性对CAPD患者腹膜蛋白丢失、生存率及腹膜炎发生率的影响

目的:观察基线腹膜转运特性对持续不卧床腹膜透析(CAPD)患者腹膜蛋白丢失、腹膜炎发生率及生存率的影响。方法:回顾性分析2014年01月—2021年01月在我院行腹膜透析手术并规律CAPD治疗≥1年的91例患者作为研究对象,根据术后首次的腹膜平衡试验(PET)结果,将患者分为4组:高转运组(H)、高平均转运组(HA)、低平均转运组(LA)及低转运组(L),比较各组腹膜蛋白清除率(PrC)及腹膜炎发生率,分析终末期肾脏病(ESRD)不同原发病与其基线腹膜转运特性之间的关系。Kaplan-Meier生存曲线比较HT组(H和HA)和LT组(LA和L)患者的生存情况。结果:PrC水平在H、HA、LA及L四组间存在显著差异,H组的PrC水平显著高于HA、LA及L组,而其血清白蛋白水平显著低于其余三组(P<0.05)。不同ESRD原发病的患者,其基线腹膜转运特性也存在差异,糖尿病肾病患者的基线腹膜转运特性多为HA及H,而慢性肾小球肾炎患者的基线腹膜转运特性多为LA及HA。腹膜炎发生率及生存率在HT组和LT组差异无统计学意义(P>0.05)。结论:ESRD原发病不同可影响其基线腹膜转运特性的分布,不同基线腹膜转运特性PD患者间PrC水平存在显著差异,腹膜高转运特性的患者多伴有高的PrC水平和低的血白蛋白水平,而腹膜转运特性对CAPD患者的腹膜炎发生率及生存率无显著影响。

某电磁发射装置高平机气电作用特性分析

基于某大质量电磁发射装置研究背景,针对螺杆气压式高平机驱动俯仰系统运行过程中的气电作用特性展开研究。建立了发射系统动力学模型,结合高平机结构和布局特征,对俯仰系统动力学运行过程中高平机气电参数进行了理论分析和试验验证,得到了两种不同工况运行条件下气压平衡效果、系统电流、功率等变化规律。理论计算结果和试验结果对比分析表明:螺杆气压式高平机气压作用可最大降低整体重力不平衡力矩的89.9%,匀速工况下可最大降低75.4%的系统运行功率,对系统电源需求和结构紧凑化设计非常有利;所提的高平机理论计算结果和试验数据吻合较好,研究成果对大质量火炮瞄准机设计具有参考意义。

Equilibrator-based measurements of dissolved methane in the surface ocean using an integrated cavity output laser absorption spectrometer

A new off-axis integrated cavity output spectroscopy （ICOS） is coupled to Weiss equilibrator for continuous high- resolution dissolved methane measurement in the surface ocean. The time constant for the equilibrator in freshwater at room temperature is determined via dis-equilibration and re-equilibration experiments. The constant for methane is about 40 min. The system is calibrated using a standard gas of 3.980×10-6, and the precision of the ICOS for methane is 0.07%. This system is equipped onboard to measure the spatial distribution in methane concentrations of South Yellow Sea （SYS） along the cruise track from Shanghai to Qingdao. Result shows that the methane concentration varies from 2.79 to 36.36 nmol/L, reveals a significant pattern of methane source in SYS, and a distinct decreasing trend from south to north. The peak value occurs at the coast area outside mouth of the Changjiang River, likely to be affected by the Changjiang diluted water mass dissolving a large amount of rich in methane. Moreover, all the surface waters are oversaturated, air-to-sea fluxes range from 98.59 to 5 485.35 μmol/（m2·d） （average value （1 169.74±1 398.46） μmol/（m2·d））, indicating a source region for methane to the atmosphere. Key words： methane, equilibrator, off-axis integrated cavity output spectroscopy （ICOS）, South Yellow Sea

EQUILIBRATING PARTITION RATIOS OFNb,Mn AND Si BETWEEN LIQUID IRON AND MgO-SiO_2-MnO SLAG MELTS

The liquid iron containing elements Nb,Mn and Si has been equilibrated with MgO-SiO_2-MnO slag melts at 1600℃ in a Mo wire-wound resistance furnace with a duration of 4h.The oxygen activities in liquid iron were measured with oxygen sensors.Using the known equilibrium constants of concerning reactions and the oxygen activities in liquid iron,the activities of components in the slag melts can be calculated.It was found that the par- tition ratios of Nb.Mn and Si have a close linear relationship with α_(FeO) in logarithmic scale.The dependence of Nb partition ratio on mole fractions of the slag components was al- so obtained.

Equilibrating in Intermediate-High Energy Nuclear Reaction

The equilibrating problem for intermediate-high energy reaction is studied by themicroscopic kinetic model.The calculations are carried out for reaction 830 MeV p+Fe.Thetime evolution of the squared momentum components and the kinetic energy density shows thatquasi equilibrium is reached.

Equilibrating Pressure with Auto-Control Valve in Water Distribution Networks

This paper probes into the feasibility of equilibrating pressure of water distribution network through (using auto-control valves) in theory and in the economy. An optimal valve control model is designed to minimize the sum of squares of residual pressure in the network. Such an analog simulation has been performed on the year 2003 programming network of a certain littoral district in North China, through which this paper confirms that it is feasible to equilibrate pressure with auto-control valves in theory. The research work has brought about a discovery of applicable conditions of valves in economic feasibility, which avoids a great economic loss due to the wild use of auto-control valve. In addition, simulated annealing algorithm is applied to optimize valve settings and shown to identify global optimum or near-optimum.

国医大师阮士怡以“双心同调,形神并重”治疗冠心病经验撷英

基于中医学“血脉之心”与“神明之心”即生理与病理相互联系、影响的思想,国医大师阮士怡提出治疗冠心病当双心同调,形神并重。在临床中他常使用行气活血安神,软坚化痰安神,疏肝解郁、清热泻火,调理脾胃、恢复升降,滋阴养血安神,固本培元、平衡阴阳等方法调治患者,并附验案。

A PENALTY-EQUILIBRATING HYBRID STRESS 3-D ELEMENT

This paper presents a theory about penalty-equilibrating(PEQ)hybrid element of three dimensions (3-D), and generates a model forthe PEQ hybrid stress 3-D element. By the PEQ ap- proach, the falsestress is avoided and the precision in calculation is raised to alarge extent under the mesh distortion condition without anotheradditional degree of freedom. In the results of numerical ex- amples,the present element is compared with the 8-node hexahedron elementand the optimized hybrid element, and it is proved that ourconclusion is correct. In addition, the penalty-equilibrating hybrid3-D element is taken as a trial to calculate problems of square platebending and incompressibility. The results obtained are satisfactory.

低温相变过程对石英矿物中盐水包裹体再平衡作用的影响

流体包裹体显微测温分析应当遵循先开展均一温度测定、后进行冰点测定的分析流程,但在实际操作过程中该测试流程并未严格执行,不少研究者在测完冰点温度(T_m)后继续重复测试该样品的均一温度(T_h),从而导致测试结果可能存在诸多不确定性。为了揭示低温相变过程对盐水包裹体再平衡作用的影响,引起广大研究人员对流体包裹体显微测温流程的重视,在盐水包裹体岩相学观察以及显微激光拉曼分析的基础上,开展流体包裹体显微测温分析,结合流体包裹体PVTx数值模拟以及前人研究结果,定量对比不同测温顺序得到的显微测温数据的差异。结果表明:冰点测试之前,盐水包裹体均一温度可以被多次重复测试;在低温相变测温过程中盐水包裹体可能会发生拉伸甚至泄露,其均一温度值会有一定程度的上升,但其冰点温度值基本不变,因此低温相变测温可能会造成其记录的原始信息发生重置;相较于方解石矿物,石英内部的盐水包裹体具有更强的抵抗再平衡作用影响的能力;较高的气体充填度以及高盐度可以在一定程度上减缓再平衡作用对盐水包裹体的影响;在低温相变测温过程中,由于水结冰产生的体积膨胀作用,盐水包裹体发生拉伸甚至泄露等再平衡现象普遍存在,导致盐水包裹体的均一温度值普遍升高。