铁粉还原应用于α-卤代羰基化合物的卤素消除研究

对铁粉还原应用于α-卤代羰基化合物的卤素消除进行了研究,实验证明,铁粉不仅可用于4-溴-2-氯-2-甲基-卜茚酮的脱氯反应,也可用于2,4-二溴-5-甲氧基-6-叔丁基-2-甲基-l-茚酮的脱溴反应,并且经过了工业化验证,给出了工业化放大时的建议.     

Feasibility study for thermal protection by microencapsulated phase change micro/nanoparticles during cryosurgery

Although considerable progresses have been made in cryosurgery to treat tumor, thermal injury to collateral structures is still a known complication of cryosurgery. In this study, a new method was proposed to prevent the healthy tissue around the cancerous tissue from thermal injury by microencapsulated phase change micro/nanoparticles, in which the phase change materials (PCMs) with large latent heat and low thermal conductivity are microencapsulated by liposome and delivered to the healthy tissue by mainline, arterial injection, hypodermic injection or direct injection. The three-dimensional transient temperature field in human body containing one tumor and embedded PCMs in the surrounding healthy tissue was numerically studied. The effects of the PCMs concentration, the phase change temperature, the temperature range near the phase change point, the latent heat and the PCMs distribution (especially the number of sides that PCMs cover, and the distance between the PCMs domain and the cancerous domain) were further discussed. The computational analysis showed that embedding PCMs in the healthy tissue around the cancerous tissue can significantly reduce the cryoinjury to the surrounding healthy tissue. The result also suggested that not embedding the PCMs directly adjacent to the cancerous tissue will help to improve the protection efficacy.     

Densification of hot-pressed composite materials for diamond tools

A set of compaction equations suitable for final stage of hot-press forming and sintering is deduced, all physical parameters are analyzed, the analysis results are consistent with a part of empirical formulas. Composites for diamond tools are taken as the subject of the investigation. Under the conditions of hot-forming sintering, the priority is given to the research of the relation between heat capacity C _p at constant pressure. By combining analysis of the set of compaction equations, we performed differential thermal analysis (DTA) in the differential scanning calorimetry (DSC) mode of heat capacity at constant pressure of pure Co powder, composite powder that consists of 663Cu and 35% Fe-based powder, analyzed the relationship between C _p and composite densification, and modified C _p of matrix composites containing 35% Fe-based composite powder for diamond tools in the mode of mixing a rare earth to make it as similar to C _p of pure Co as possible. Such modified powder is used in practical hot pressing of diamond tool composites and guides it with a set of compaction dynamical equations to radically improve the stability of practical performance (bending strength, hardness, impact ductility, porosity) of powder metallurgy composites and compaction of diamond tool composites.     

Fabrication of carbon nanomaterials by atmospheric pressure microplasma

Atmospheric pressure microplasma was produced in a scanning electron microscope (SEM) chamber for synthesising carbon nanomaterials. The SEM observation is convenient for both adjusting the gap length and observing the electrode surface before and after experiments. After adjusting the gap length, the electrodes were housed in a small removable gas cell equipped in the SEM chamber and CH₄ discharge gas was introduced into the gas cell. It was found that the discharge was pulsated automatically because of slow discharge through a large ballast resistor and fast discharge through gas breakdown, even though a DC voltage was applied. The peak pulse current density was almost 60 kA/cm², the peak power density in the microplasma volume was approximately 555 MW/cm³ and the pulse width was 10 ns typically. Spherical and nanotube-like carbon nanomaterials were found on the cathode surface after microplasma discharge for 1? 5 s.With the discharge time increasing, the spherical substance changes into nanotube-like carbon nanomaterials.     

地震炮井综合测井仪的研制

地震炮井综合测井仪的成功开发使地震勘探钻井施工质量及HSE纳入了科学的量化管理,可以对井深、井位、炸药、雷管、环境污染及耕地损坏面积等进行量化监测,自动采集、存储、处理数据,并可通过移动通信或互联网将各种监测数据及时传送到主管部门.本文分析了地震炮井综合测井仪的结构,从数据采集、图像采集和数据的显示与传输等方面对综合测井仪进行了全面地介绍,并阐述了各种测量数据、井口现场图像数据的采集、传输方法.     

凡口铅锌矿井下主要工序的节电潜力分析

本通过对矿山井下主要用电工序的理想能耗和额定电耗的理论计算并与相应工序的实际电耗对比，取得量化后各工序节电潜力值，为矿山的节电技术管理和技术措施项目的制订及节电计划的拟定提供了具体的科学依据。     

对注射模配合零件中“避空”的分析

例举了注射模各配合零件中，20多例“避空”的实例，用以阐明“避空结构”在注射模各配合零件中的具体位置、尺寸、功能以及对模具质量和对制品质量的影响。     

地层压力下降对指数式产能方程的影响分析

随着地层压力的下降，与指数式产能方程流动系数密切相关的参数，如天然气偏差系数、天然气粘度、气层渗透率、有效厚度等都是变化的。气层渗透率、有效厚度的变化甚微，相比之下可以忽略不计；而天然气偏差系数和粘度的变化却不容忽视，两者之乘积不断变小，由此引起指数式产能方程流动系数不断增大。通过分析，给出了指数式产能方程流动系数随天然气偏差系数和粘度对应变化的关系式。当已知气井某一时刻的指数式产能方程后，便可确定任意地层压力下的气井产能，从而更准确地指导气井开采，避免重复试井工作。     

Comprehensive Evaluation of Tahe Medium Gravity Crude

The comprehensive evaluation of Tahe medium gravity crude has demonstrated that this type of crude belongs to a intermediate base sour crude, featuring high vanadium content （103ppm）, high carbon residue content, low pour point, and low acid value. Based on the crude processing conditions at SINOPEC Luoyang Petrochemical Branch Company, a proposal on the appropriate process flow scheme for processing Tahe crude oil has been raised with the main ideas presented as follows. The IBP--175℃ fraction is not an ideal feedstock for catalytic reforming; the 75--250℃ fraction is a qualified feedstock for zeolite de-waxing; the 140--230℃ fraction can be used to manufacture the No. 3 jet fuel through appropriate distillation range adjustment and product refining; the 175--350℃ fraction can be directly used to manufacture No.-10 diesel through proper refining; the atmospheric resid boiling over 350℃is not suited to be used as the RFCC feedstock; the 350--520℃ vacuum distillate oil can be used as the FCC feedstock; and the vacuum residuum boiling over 520℃ is a good feedstock for manufacture of asphalt.