双锥体有压三产品重介旋流器在中兴选煤厂的应用

针对中兴煤矿4#、5#原煤的特性,通过分析传统有压三产品重介旋流器在中兴选煤厂应用中存在的问题,对重介旋流器进行了改造,并介绍了改造后的双锥体有压三产品重介旋流器的结构、工作原理,阐述了该旋流器的应用效果。

管袋固化砂浆软体排抛石压重护坡在灯笼险段的应用

管袋固化砂浆软体排抛石压重是一项水下护坡施工新技术,因其具有适应能力强、防护效果好、造价低等特点,在崩岸处理中得到推广使用。本文结合灯笼海堤东三险段处理工程实践,对管袋固化砂浆软体排抛石压重技术做了初步探讨和总结,可为今后类似的工程提供一些借鉴。

软弱地基土石坝坝基抗滑稳定计算及加固处理

抗滑稳定是软弱地基上土石坝坝基安全的关键问题之一,其抗滑稳定计算及加固处理技术也一直是学者研究的热点。以深厚覆盖层软弱地基上的仙女山水库土石坝为背景,针对软弱土层抗剪能力低、坝基深层抗滑稳定安全系数低于规范要求的问题,通过渗流和抗滑稳定计算,并进行加固措施对比分析,提出了在大坝下游坡脚设置压重体的处理措施。计算结果表明:在大坝下游设置压重体后,坝基深层抗滑稳定安全系数满足规范要求,且压重体结构简单、施工快捷,可为类似工程的坝基抗滑稳定加固处理提供借鉴。

Sucrose Supplementation, Insulin Injection, and Resting Period Prior to Slaughtering on Meat Physical Characteristics in Sheep Exposed to Stressful Transportation

An experiment was conducted to study the effects of sucrose supplementation, insulin injection, and resting period prior to slaughtering on meat quality in sheep exposed to stressful transportation. Fifty four local sheep （10 to 12 months of age） with body weight （BW） ranged from 14 to 1 7 kg. The experimental sheep were assigned into a completely randomized design with a 2 × 3 × 3 factorial arrangement with 3 replications. The first factor was two levels of sucrose supplementation （0 and 6 g/kg BW）, the second factor was three levels of insulin injection after transportation （0, 0.3 and 0.6 IU/kg BW）, while the third factor was three duration time of resting period （2, 4 and 6 h prior to slaughtering）. Parameters measured were rectal temperature and heart rate, body weight, carcass percentage, meat pH, water holding capacity, meat tenderness, cooking loss and meat color. The results of the experiment showed that sheep after transportation had higher rectal temperature and heart rate, indicated that sheep supplemented with sucrose after transportation has a lower meat pH and cooking loss. The longer resting period prior to slaughtering has the lower body weight, but has higher carcass percentage. However, the treatments did not influence water holding capacity, meat tenderness and meat color. It was concluded that sucrose supplementation, insulin injection, and resting period prior to slaughtering in sheep exposed to stressful transportation could improve meat quality.

Development and Commercial Application of Ultra-Low Pressure Naphtha Reforming Technology with Continuous Catalyst Regeneration

The development history and major technological innovations of the ultra-low pressure naphtha reforming technology with continuous catalyst regeneration in China were introduced.This technology had been adopted by the 1.0 Mt/a CCR unit at the Guangzhou Company.The appropriate catalyst was selected to meet the demand of the unit capacity,the feedstock,and the product slate.The design parameters,including the reaction pressure,the octane number of C5+liquid product,the reaction temperature,the space velocity,the hydrogen/oil molar ratio,and the catalyst circulating rate,were chosen based on the study of process conditions and parameters.The commercial test results showed that the research octane number of C5+product reached 104 when the capacity of the CCR unit was 100%and 115%of the design value.The other technical targets attained or exceeded the expected value.

Effects of Different Compounding of Formulae on Content of Gardenoside in Yin Chen Hao Decoction

In order to observe the effects of the ground and intact Zhi Zi (Fructus Gardeniae) and different combinations of the ingredients and refined single Chinese drug granules in Yin Chen Hao Decoction compound prescription on the contents of gardenoside (an effective component of the prescription), the contents of gardenoside were determined with reversed phase high performance liquid chromatography (HPLC), with acetonitrile-water (15:85) as mobile phase, at wave length 238nm. The results indicated that the gardenoside-decocted-out rates in the decoctions prepared by different combinations of the ingredients with the ground Zhi Zi (Fructus Gardeniae) all were higher significantly than those in the decoction with intact Zhi Zi (Fructus Gardeniae), and generally, different combinations of the ingredients in the decoction had only little effect on the gardenoside-decocted-out rate.

Effect of substrate doping on threshold voltages of buried channel pMOSFET based on strained-SiGe technology

The effect of substrate doping on the threshold voltages of buried channel pMOSFET based on strained-SiGe technology was studied.By physically deriving the models of the threshold voltages,it is found that the layer which inversely occurs first is substrate doping dependent,giving explanation for the variation of plateau observed in the C-V characteristics of this device,as the doping concentration increases.The threshold voltages obtained from the proposed model are-1.2805 V for buried channel and-2.9358 V for surface channel at a lightly doping case,and-3.41 V for surface channel at a heavily doping case,which agrees well with the experimental results.Also,the variations of the threshold voltages with several device parameters are discussed,which provides valuable reference to the designers of strained-SiGe devices.

Analysis of Pb-Bi Vessel Wall Ablation Experiment with High Temperature Liquid by MPS Method

In a severe accident of a light water reactor, ablation of the RPV （reactor pressure vessel） lower head by corium is a key phenomenon, which affects progression of the accident. The MPS （moving particle semi-implicit） method is one of particle methods that calculate behavior of incompressible fluid by semi-implicit method. In preceding studies, the MPS method has been extensively studied and developed for simulations of different phenomena involved in severe accident of nuclear reactors. This paper aims to investigate whether the MPS method is capable of analyzing the lower head ablation phenomenon. The small-scale experiment carried out at CRIEPI （Central Research Institute of Electric Power Industry） using Pb-Bi vessel and silicone oil was analyzed for the validation of the MPS method. The MPS analysis well reproduced the experimental phenomena qualitatively. However, with respect to some quantitative results, more investigation such as influence of the calculation particle size is necessary.

Factors affecting cerebrospinal fluid opening pressure in patients with spontaneous intracranial hypotension

Objective： Spontaneous intracranial hypotension （SIH） is recognized far more commonly than ever before. Though usually characterized by low cerebrospinal fluid （CSF） pressure, some patients with SIH are observed to have normal pressure values. In this study, we aimed to confirm the proportion of patients with normal CSF opening pressure （CSF OP） and explore the factors affecting CSF OP in SIH patients. Methods： We retrospectively reviewed 206 consecutive SIH patients and analyzed their clinical and imaging variables （including demographic data, body mass index （BMI）, duration of symptoms, and brain imaging findings）. Univariate and multiVariate analyses were performed to identify the potential factors affecting CSF OP. Results： In a total of 114 （55.3%） cases the CSF OP was 〈60 mmH2O （1 mmH2O=9.80665 Pa）, in 90 （43.7%） cases it was between 60 and 200 mmH2O, and in 2 （1.0%） cases it was 〉200 mmH2O. Univadate analysis showed that the duration of symptoms （P〈0.001）, BMI （P〈0.001）, and age （P=0.024） were positively correlated with CSF OP. However, multivariate analysis suggested that only the duration of symptoms （P〈0.001） and BMI （P〈0.001） were strongly correlated with CSF OP. A relatively high R2 of 0.681 was obtained for the multivariate model. Conclusions： Our study indicated that in patients without a low CSF OP, a diagnosis of SIH should not be excluded. BMI and the duration of symptoms can influence CSF OP in SIH patients, and other potential factors need further investigation.

FEM analyses for influences of stress corrosion and pressure solution on THM coupling in dual-porosity rock mass

With the models of stress corrosion and pressure solution, by Yasuhara et al., two computation conditions were designed for a hypothetical nuclear waste repository in an unsaturated dual-porosity rock mass: (i) the fracture apertures are changed with the stress corrosion and pressure solution (the porosity of rock matrix is also a function of stress); (ii) the fracture apertures and the porosity of rock matrix are constants. Then the corresponding two-dimensional FEM analyses for the coupled thermohydro-mechanical processes were carried out, and the states of temperatures, rates and magnitudes of aperture closure, pore pressures, flow velocities and stresses in the rock mass were investigated. The results show the followings: The aperture closure rates caused by stress corrosion are almost six orders higher than those caused by pressure solution, and the two kinds of closure rates climb up, then decline, furthermore tend towards stability; the fracture apertures decrease from the original value and tend towards the residual value, and the contact-area ratios of asperities increase also from the original value and tend towards the nominal value; when the effects of stress corrosion and pressure solution are considered, the negative fracture pressures in near field rise very highly; the differences between the magnitudes and distributions of stresses within the rock mass in two calculation cases are very small.

Methods and Efficacy of Acupuncture for Regulating Body Weight in Different Populations

Objective： To investigate the proper methods of acupuncture and moxibustion for controlling body weight and their objects. Methods： 274 outpatients were allocated to 3 observation groups： obesity, overweight and normal, using standard weight as an index. The obesity group was divided, at a ratio of 1： 1 ： 3, into 3 groups： fixed prescription, local treatment and treatment based on syndrome differentiation. The syndromes were classified into five types in the syndrome differentiation group. Different protocols of acupuncture and moxibustion plus auricular-plaster therapy were drawn up for treatment. Body mass index （BMI）, body fat （F%）, body circumferences and subcutaneous fat were evaluated in the patients before and after treatments. Results： There was a difference in the controlling effect of acupuncture on body weight among different populations. The curative effect was better in the obesity and overweight groups than in the normal group; the effective rate was 72.2%, 72.5% and 44.0%, respectively. There was also a difference in curative effect among obesity patients with different types of syndromes. The curative effects on retention of damp-heat in the stomach, stagnation of liver qi and dampness retention due to splenic hypofunction were equal but all better than those on deficiency of splenonephric yang and internal heat due to yin deficiency. There was also a difference in curative effect among different protocols. The curative effects in the syndrome differentiation-based treatment and fixed prescription groups were equal （77.8%） but all better than that in the local treatment group （53.3%）. Conclusion： Acupuncture and moxibustion is an effective way to treat obesity and overweight. Treatment based on syndrome differentiation and fixed prescription on the basis of syndrome differentiation are effective methods.