On Physical and Mechanical Behavior of Natural Marine Intermediate Deposits

Coastal structures may be built on natural sedimentary intermediate grounds, which mainly consist of silty soils and fine sandy soils. In this study, extensive field and laboratory tests were performed on the nattwal marine intermediate deposits to demonstrate the difference in behavior between natural marine clayey soils and natural marine intermediate deposits. The natural intermediate deposits have almost the same miles of natural water content to liquid limit as those of the soft natural marine clays, but the former have much higher in-situ strength and sensitivity than the latter. The research results indicate that grain size distributions of soils affect significantly tip resistance obtained in field cone penetration tests. The mechanical parameters of natural marine intermediate deposits are also significantly affected by sample disturbance due to their high sensitivity and relatively large permeability. Unconfined compression shear tests largely underestimate the strength of natural marine intermediate soils. The triaxial consohdated compression shear tests with simulated insitu confined pressure give results much better than those of uncomfined compression shear tests.     

利用深液TLD装置减小结构振动的研究

本文通过分析ＴＬＤ装置对结构的作功及其与结构的相互作用情况，建立了描述ＴＬＤ装置对结构起减振作用的分析方法。依据本文建立的方法与概念，可将复杂的ＴＬＤ装置与结构系统的相互作用研究、分析简化为：首先孤立研究ＴＬＤ装置的性能，而后再与结构系统装配进行整体分析。最后，用试验测得的数据检验、印证了本文的分析方法     

高压液相色谱分析外源类固醇在真鲷血液中的代谢

本研究利用高压液相色谱法（ＨＰＬＣ）法测定：外源睾酮（Ｔ）和甲基睾酮（ＭＴ）（１０μｇ／ｇ）腹腔注射给入真鲷（Ｐａｇｒｏｓｏｍｕｓｍａｊｏｒ）鱼体后，在血液中的代谢状况．证明，Ｔ和ＭＴ的吸收和清除很快。ＭＴ在注射１ｈ达最大吸收峰（２８３ｎｇ／ｍｌ），２４ｈ内很快降低。Ｔ的吸收和清除状况与ＭＴ相似，不同的是其吸收值（最大值为６４ｎｇ／ｍｌ）比ＭＴ低许多。随着鱼类养殖至商品规格，类固醇激素的含量将降至很低，因此，ＭＴ可做为一种生长促进因子用于水产养殖生产。     

Growth of monodisperse,submicron aerosol particles exposed to SO2, H2O2, and NH3

The growth of monodisperse particles (0.07 to 0.5 µm) exposed to SO₂ (0–860 ppb), H₂O₂ (0–150 ppb) and sometimes NH₃ (0–550 ppb) in purified air at 22 °C at relative humidities ranging from 25 to 75% were measured using the Tandem Differential Mobility Analyzer technique. The experiments were performed in a flow reactor with aqueous (NH₄)₂SO₄ and Na₂SO₄ droplets. For (NH₄)₂SO₄ droplets the fractional diameter growth was independent of size above 0.3 µm but decreased with decreasing size below that. When NH₃ was added the fractional growth increased with decreasing size. Measurements were compared with predictions of a model that accounts for solubility of the reactive gases, the liquid phase oxidation of SO₂ by H₂O₂, and ionic equilibria. Agreement between measured and predicted droplet growth is reasonable when the ionic strength effects are included. Theory and experiments suggest that NH₃ evaporation is responsible for the decrease in relative growth rates for small aqueous ammonium sulfate particles. The observed droplet growth rates are too slow to explain observed growth rates of secondary atmospheric sulfate particles.     

泡沫泥浆孔内压力

探讨孔内压力计算公式，定义了孔内压力降低系数。计算出给定条件下不同孔深的压力、压降系数、泡沫泥浆密度，并作出曲线图，求出降压系数极大值及其适应孔深。     

气液包裹体稳定同位素样品制备及与气液相成分联测方法

本方法研制了一套“气液包裹体稳定同位素样品制备与气液相成分分析联测装置”，将包裹体稳定同位素样品制备装置与气相色谱仪连结起来，能在一个样品中测定出包裹体中的碳、氢、氧稳定同位素及气相和液相成分。整套装置性能良好，主要测定项目均能达到规定的技术指标，并满足包裹体测定要求：①δＤ制样及测定结果的标准偏差≤３‰；②δ＾１８Ｏ制样及测定结果的标准偏差≤０．３‰；③δ＾１３Ｃ制样及测定结果的标准偏差≤０．１     

Subsolidus and melting relations for the join CaCO3-MgCO3 at 10 kbar

Mixtures of pure dry CaCO₃ and MgCO₃ were reacted at 10 kbar in a piston-cylinder apparatus. Solidus and liquidus boundaries were delineated by interpretation of quenched textures. X-ray determined compositions of quenched carbonates are not a reliable guide to the phase relations. The binary melting loop for CaCO₃-MgCO₃ extends from CaCO₃ at 1460°C through a liquidus minimum near 30 wt% MgCO₃ and 1075°C, and it is terminated at the incongruent melting reaction for dolomite solid solution at 1125° C (liquid with 32 wt% MgCO₃) Magnesite solid solution dissociates at 1090°C to produce dolomite + periclase + CO₂, truncating the dolomite-magnesite solvus. The 10 kb liquidus minimum at 1075°C and 30 wt% MgCO₃ occurs at lower temperature and higher $\text{Ca}\text{Mg}$ ratio than the 27 kbar liquidus minimum at 1290°C and 38 wt% MgCO₃. This relationship suggests that the first liquid produced by melting of a carbonate-bearing peridotite has increasing $\text{Mg}\text{Ca}$ ratio with increasing pressure. These phase relations provide part of the framework required to trace paths of crystallization of kimberlite and carbonatite magmas.     

新疆哈密黄山杂岩体岩浆动力学计算及成岩模式

本文通过岩浆粘度、密度、不混溶分离速度及岩浆沿裂隙上升速度等的计算,论证了黄山杂岩体第二侵入期岩浆发生液态不混溶的流体动力学条件,从而推断存在一个次级岩浆房,并认为这个次级岩浆房为液态不混溶分离提供了稳定空间。在此基础上,结合地幔中硫化物的分布特点和地幔岩块底辟上升模式,提出了第二侵入期岩浆的形成演化模式。     

福建下西坑铁矿及与之相关的矿浆实验研究

福建下西坑铁矿是与闽南晚三叠世文宾山组火山-沉积岩有关的铁矿床.许多证据如岩石中含有磁铁矿浆角砾及各种流纹状铁矿浆,矿石中TiO_2含量高且稳定(3%~7%),与含铁量呈正相关关系,岩石中稀土含量也与铁含量呈正相关关系等,表明其铁质直接采源于从原始岩浆中分熔的铁质矿浆.实验研究表明,模拟下西坑原始岩浆体系的实验体系(Fs_60'Usp_40)-Ap-Ap在latm,1250℃等温面上存在一个液相不混溶区,即下西坑铁矿的原始熔浆在一定条件下能够分熔出富铁熔浆.     

Reflection and refraction of plane harmonic waves at an interface between elastic solid and porous solid saturated by viscous liquid

A general solution of Biot's field equations governing small motions of a porous solid saturated by viscous liquid is employed to study the reflection and refraction at the interface between an elastic solid and a liquid-saturated porous solid. The incident wave is assumed to be plane and homogeneous, propagating through the isotropic elastic solid. The poroelastic solid is considered to be a dissipative one. Amplitude and energy ratios are computed numerically for a particular model. With first-order corrections for the porosity of solid and viscosity of liquid, the limiting cases of low and high frequencies are computed.