山西省娄烦县尖东铁矿地质特征及矿床成因

通过对山西省娄烦县尖东铁矿区域地质背景、矿区地质特征、矿体特征等的综合分析,阐述了该区铁矿的成因类型,总结其成矿规律,为铁矿的进一步勘查开发提供地质依据。     

充填采煤液压支架充填特性理论研究及工程实践

固体充填采煤液压支架既具有传统支架掩护采煤所需要的基本功能,又具有掩护充填所需要的特殊功能,是实现采充一体化的关键设备。针对其掩护充填的特殊功能,提出充填特性的概念,并分别从支护强度、后顶梁支护强度、运动特性、夯实力、夯实离顶距以及地质条件适应性6方面具体阐述了充填特性的基本内涵。架型结构、地质条件、充填工艺是影响充填特性的主要因素,其中架型结构直接决定充填支架的充填特性;煤层厚度、煤层顶底板、煤层倾角、煤层埋深等地质条件影响充填特性的发挥;充填工艺则通过改变离顶距及夯实力大小、改善对不同地质条件的适应性3方面影响充填性能的保障。具体工程实践中则通过工作面布置优化、结构设计优化、充填工艺优化、实时在线监测等措施保障充填性能的发挥。济三矿ZZC10000/20/40型六柱正四连杆充填采煤液压支架的工程应用验证了本文的研究成果。     

中外合资企业管理特点分析及启示——以福建联合石化公司管理实践为例

以福建联合石化公司管理实践为例，从诚信、以人为本、高效务实、授权指引、内部监控、文化融合等几个方面对中外合资企业管理特点进行分析，探讨其对提升石化企业管理水平的启示。     

Characterization of Calcium Alginate Beads Containing Structurally Similar Drugs

ABSTRACT

The aim of this study was to investigate the characteristics of alginate beads prepared by ionotropic gelation in which structurally similar drugs were incorporated. For this purpose theophylline and theobromine were selected as model drugs. The influence of incorporated drugs on bead characteristics such as size, shape, and morphology, as well as encapsulation efficiency, was examined. It was found that theobromine as well as theophylline content in beads significantly decreased with increasing hardening time due to drug diffusion into the hardening media. In theobromine beads the drug content was extremely improved by dropping the alginate and drug solution into an acidic calcium chloride solution, while theophylline content was to some extent improved by the hardening of beads in a calcium chloride solution saturated with the drug. The most evident difference between theophylline and theobromine beads was in their shape and morphology. Theobromine beads were round, while theophylline ones had an irregular shape with an extremely wrinkled surface. The distinction in shape was highly dependent on drug content. Additionally, it was demonstrated that beads' shape was dependent on preparation conditions as well. On the basis of x-ray powder diffraction (XRPD) and differential scanning calorimetry (DSC) analyses and scanning electron microscope (SEM) photographs it was found that the most of the drug in bead was present in an amorphous state. Therefore, it is suggested that some drug–alginate interactions could be present in beads and might be responsible for the different shape of theophylline and theobromine beads.

Thus it can be concluded that the preparation of beads by ionotropic gelation cannot be generalized even though structurally similar drugs are incorporated.     

RESERVOIR CHARACTERISTICS OF JURASSIC SHAXIMIAO FORMATION,WESTERN SICHUAN BASIN

Our study shows that （ 1 ） the Shaximiao reservoir, western Sichuan Basin, is mainly composed of arkose and lithic ar- kose, and litharenite, feldsparthic and lithic quartz sandstone for the second; （2） the reservoir space includes pore and fracture, and in- tergranular dissolution pore for the main one whereas residual intergranular pore and intragranular dissolution pore for the second ones; （3） the throat type dominantly contains tubular and intergranular fissures, which belong to fine- to micro-throat ones; （4） its porous structure is poor, which is characterized by small pore and shallow throat, small volume of effectively connecting pore, and medium to high drainage pressure; and （5） this reservoir is mostly featured by low to medium porosity and permeability, partly high porosity and per- meability, and strong heterogeneity. In addition, the factors controlling its growth, the sandbedy distribution, and the favorable reservoir belts are further studied. These results may provide an important support for exploration and development of Shaximiao reservoir.     

Sourcing performance satisfaction: A study of the critical success factors and firm-related characteristics

Abstract

The aim of this paper is to identify the critical success factors (CSFs) of production sourcing for small and medium-sized clothing firms in Hong Kong, and to explore the effects of these factors and firm-related characteristics on satisfaction with production sourcing performance. A two-stage methodology was applied. In the first stage, a multiple-case study of ten small and medium-sized clothing firms in Hong Kong was undertaken to identify the CSFs and critical performance indicators of production sourcing. In the second stage, a questionnaire-based survey was conducted among 104 small and medium-sized clothing firms to test the developed hypotheses. Based on the findings, the two most significant success factors of production sourcing are the sustaining of long-term relationships with production providers and choosing production providers carefully. The two aspects of production sourcing performance that are most likely to lead to satisfaction are on-time delivery and better quality. The results show that the level of satisfaction with sourcing performance is influenced by certain CSFs and firm-related characteristics.     

城市中央时尚购物中心建筑规划设计--以武汉英特宜家购物中心为例

本文以源于瑞典的英特宜家品牌、在千湖之城武汉以其斯堪的纳维亚设计为例阐述了其从总体设计理念和建筑特征,将英特宜家的设计概念和武汉城市的独特风格和谐完美的融合在了一起,满足现代消费者对大型建筑空间的本质要求,探索综合购物中心设计上注重实际和独有的时尚品味.     

时代的规划设计语汇与城市空间个性的营造——余姚市城区中心旧城改造概念性城市设计及其引发的思考

通过余姚市这一具有悠久历史文化传统的城市的城区中心旧城改造概念性城市设计构思及其所引发的思考，探讨如何根据城市建设项目的性质、规模、场地及周围环境的情况等基本条件，不刻板拘泥于对传统形式的借鉴，用时代的规划设计语汇营造城市空间的个性。