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关键词： 伤寒研究方法   伤寒学术流派   重订派   增补派   注解派   证候派   经方派   宋代   《伤寒论》   张仲景  

摘要： 宋代医家在研究《伤寒论》时所采用的方法主要有重订法、增补法、注解法、专题研究法等,重订法是指对《伤寒论》条文重新归纳、整理的研究方法;增补法是指在《伤寒论》原文基础上进行增补的研究方法,包括增补前人经验、个人续作两个方面;医家对《伤寒论》的注解与阐释,渐渐形成了“以文解论”“以经释论”“以注解论”“以心解论”“集注法”等多种注解方法;依据《伤寒论》诊法、治法、方药、医案等研究对象不同,区分不同专题进行研究的方法称为“专题研究法”;发挥法是不局限于《伤寒论》原文,专论、阐发伤寒病的病因、病机、治法、方药等内容的研究方法。这些思路与方法为后世的伤寒研究提供了更多方向与可能,后世医家或沿袭宋人成法,或有突破创新,或批判、扬弃,从而形成了不同的伤寒流派,分别为重订派、增补派、注解派、证候派、经方派等。探讨宋金伤寒研究方法及其影响,对厘清伤寒学术脉络及其传承发展具有重要意义。

关键词： 勇士队   西部决赛   第七场   凯文杜兰特   西部冠军  

摘要： 在2018年西部决赛第七场结束之后,勇士队的球员们戴上了西部冠军的帽子,凯文·杜兰特接过了奖杯,每个人脸上都绽放出了笑容,可在笑容背后,他们的心情却并不轻松。

关键词： 中国航天科技集团有限公司   长征十二号  

摘要： 在探索浩瀚宇宙的征程中,火箭无疑是人类迈向太空的“天梯”。今天,我们来认识一位“新选手”——中国航天科技集团有限公司第八研究院主导研制的长征十二号运载火箭。它可是自带超多“闪光点”,一亮相就惊艳众人!

关键词： 全民阅读活动   世界读书日   阅读交流会  

摘要： 本刊讯4月16日下午,在第30个“世界读书日”即将到来之际,在深化“全民阅读活动”的氛围中,《民族文学》杂志社联合中央民族大学中国少数民族语言文学学院、文学院共同举办“畅读青春”阅读交流会。《民族文学》杂志社主编陈亚军、中央民族大学中国少数民族语言文学学院院长姜镕泽、文学院院长张翔参会并致辞,交流会由中国少数民族语言文学学院党委书记袁辰霞主持。

关键词： Refrigeration  

摘要： The wall of liquid rocket thrust chamber is washed by high enthalpy flow for a long time, which brings great challenge to the stable and safe operation of the engine. In this paper, micro-scale wire mesh transpiration channel and macro-scale transpiration model of liquid rocket thrust chamber were established respectively to explore the flow heat transfer characteristics under the condition of transpiration cooling. The results show that the increase of coolant flow rate in the pore scale transpiration channel can significantly increase the flow rate in the channel and reduce the outlet temperature, and the small porosity can improve the heat transport capacity of the coolant. Within a certain range, the greater the flow rate of transpiration coolant, the higher the overall transpiration cooling efficiency of thrust chamber;The larger the porosity, the higher the cooling efficiency of thrust chamber contraction section. © 2025 Science Press. All rights reserved.

关键词： Boosters (rocket)  

摘要： To gain a comprehensive understanding of the performance characteristics and influencing factors of the pure rocket mode in rocket-based combined cycle (RBCC) engines， a full-axisymmetric characteristic RBCC engine benchmark flow path with a central rocket layout was designed and constructed. Additionally， a half-axisymmetric scarfed nozzle configuration RBCC engine and a continuously expanding nozzle configuration rocket engine flow path with the same designed expansion ratio were developed. Three-dimensional expansion flow field simulations were conducted under different thrust chamber pressures in the pure rocket mode， yielding the internal flow characteristics and thrust specific impulse performance characteristics under various nozzle configurations， secondary flows， and rocket propellant schemes. The results indicate that in the pure rocket mode， the non-ideal continuous expansion flow state leads to a loss of specific impulse performance，with the specific impulse efficiency being below 80%. The strong shock wave after the large sudden expansion leads to a total pressure loss，which is the main mechanism for performance degradation. The overall axisymmetric nozzle configuration has a specific impulse efficiency decrease of about 8% compared to the continuous expansion nozzle. The semi-axisymmetric scarfed nozzle can reduce the total pressure loss of the expansion and improve the specific impulse efficiency. Introducing a secondary flow can adjust the expansion-compression wave system structure to a certain extent to reduce the total pressure loss. Increasing the total temperature of the secondary flow is beneficial for enhancing overall performance. © 2025 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.