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三峡水库蓄水后关洲河段河势调整对松滋口分流影响  [PDF]
黄莉,刘士和
- , 2018, DOI: 10.15961/j.jsuese.201700775
Abstract: 中文摘要: 关洲河段属典型的主流年内交替型分汊河道,三峡水库蓄水后该河段河势出现了较大变化。关洲河段河势调整对下游松滋口分流变化的影响作用逐渐凸显,也越来越受关注。作者利用实测的2002—2013年的河道地形资料和1984—2017年的水文观测数据,首先分析了三峡水库蓄水运用后关洲河段的河道演变特点,然后从河道冲淤、左汊发展与左汊主汊的维持时间等3个方面研究了上游河势调整对松滋口分流的影响。研究成果表明:三峡水库蓄水后,关洲河段以枯水河槽冲刷为主,枯水河槽冲刷量约占平滩河槽总冲刷量的90 %;冲刷形式由起初的冲刷下切逐渐转化为冲刷左侧低滩及河床组成较细的左汊;分汊段深泓高程由左高右低转变为左低右高;枯水期右汊的主汊地位有所减弱;左右汊主流年内易位的临界流量呈现减小的趋势;枯水河槽的冲刷将引起中小流量(小于20 000 m 3/s)时松滋口分流能力的减小,但随着关洲河段河道冲刷的逐步完成这一变化会有所削弱;关洲左汊的发展有利于增加较大流量(大于20 000 m 3/s)时松滋口的分流比,且这一流量持续的时间越长,即左汊维持主汊地位的时间越长,松滋口年分流比越大。但左汊的过度发展可能会引起关洲河段主流不再发生年内交替,而是长期稳定在左汊河道,建议有关部门加强对关洲左汊河道的监测。
Abstract:The Guanzhou reach,located in the middle Yangtze River,is a typical anabranching channel with its mainstream alternating between the two branches within a year.After the impoundment of Three Gorges Reservoir (TGR),the channel of Guanzhou changed significantly.The influence of channel adjustment of Guanzhou on the flow diversion at Songzikou became obvious and has been paid more and more attention.Based on the topographical data in the period 2002—2013 and the hydrological data in 1984—2017,the channel evolution of the Guanzhou reach after the impoundment of TGR was analyzed.Then the impact of upstream channel adjustment on flow diversion at Songzikou was studied from the following three aspects: the channel erosion and deposition,the development of left branch,and the duration of the left branch staying as main channel.The results show that,after the impoundment of TGR,the Guanzhou Reach was eroded continuously,and about 90 % of the total channel scouring occurred in the low-water channel.The scour pattern changed from purely downward erosion to left convex bank erosion along with left branch erosion due to finer river bed materials; now the thalweg elevation in left branch is lower than that in right branch which was opposite before.The status of the right branch being the main channel was weakened in dry season.The critical flow rate for the mainstream alternation was decreased.When the incoming flow was less than 20 000 m 3/s,the flow diversion ratio at Songzikou was reduced,while the reducing trend was weakened gradually with the channel developing into an equilibrium state.The development of the left branch will increase the diversion ratio at Songzikou in larger discharge,and the longer the duration of the larger discharge,that is,the duration being the main channel for the left branch,the greater the annual averaged flow diversion ratio at Songzikou.It's worth noting that,the over-development of the left branch may cause the mainstream of Guanzhou Reach to cease alternating between two
汉画所见存思术考——兼论《老子中经》对汉画的文本化继承  [PDF]
姜生,冯渝杰
- , 2015,
Abstract: 存思是后世道教中长期流传不衰的修仙术,然其早期渊源形态如何向为一疑。基于汉墓画像资料与道经所存相关文本资料的交叉研究,可以证明“历藏内视”的存思术在东汉社会之流行及其表现形态。汉墓画像中的某些歌舞图及“四灵在旁”类图像,正是同时代《王子乔碑》、《帝尧碑》及《老子铭》所记当时社会中流行的“弦琴以歌太一”、“覃思以历丹田”之类存思修炼活动的图像表达;“歌舞”之目的在于“以歌太一”、“以乐却灾”,“四灵在旁”则表示存思“坐忘”以复归浑沌不死。从《老子中经》则可发现对应于武氏祠左石室“雷公出行图”的文本依据,由此进一步确证部分汉画所蕴涵的内炼属性,并揭示《老子中经》对汉画所代表东汉宗教思想的文本化继承。通过汉墓图像与今存原始道教文献的准确对接,不仅可以明确判断汉画的宗教实质,更可具体呈现曾经盛行于世而沉淀于墓中的炼仙之术,再现隐藏于汉画背后的历史信息,打开观察、理解汉代精神世界的新视野。汉画 存思术 历藏内视 《老子铭》 《帝尧碑》 《王子乔碑》 《老子中经》 汉墓画像作为汉代信仰的直接载体,已为汉代历史和艺术研究者所认识。然而由于汉画附着文字甚少,信息量严重不足,加之图像所依存的时代知识、信仰背景的断裂佚失,相关研究甚难推进。汉画研究因此更多地沦为无关内涵的形式阐释。然而汉墓画像所隐含的历史信息,犹如重重加密之地下通道,得非其钥则难启其扉。本文基于从汉碑及早期道教相关文献发现的文本资料,解读隐含于汉画的存思内炼之术。尤为难得的是,准确对应于汉画图像的早期道经文本,为揭示汉画之宗教内涵,提供了确凿的证据。
Abstract:Though its origins are obscure, meditative visualization (cunsi 存思) has a long history as a technique of self-cultivation in Daoist tradition. Based on the interdisciplinary study of visual materials from Han pictorial funerary art and related early Daoist scriptures, we can now determine a series of techniques of visualization that developed in the Eastern Han called “inner contemplation by passing through the viscera.” Some Han tomb depictions of song and dance “surrounded by the four numina” are pictorial expressions of the techniques of inner cultivation known as “musical praise of the Grand Unity” and “visualizing cinnabar fields.” Contemporary corroborating textual records can be found on the “Stele to Emperor Yao,” “Stele to Wangzi Qiao,” and the “Inscription for Laozi.” Song and dance are aimed to “use song to joy the Grand Unity” or “utilizing music to repulse misfortune”; while “being surrounded by the four numina” means “to sit in obliviousness,” to forgetting all and returning to a primordial huntun (the original chaos) state of deathlessness. In the Central Scripture of Laozi one can find the textual counterpart to images of “the Thunder Lord Travels Abroad” from the Wu family shrine in Shandong. Once again, pictorial art both inherits and projects Eastern Han religious attributes of inner cultivation from texts like the Central Scripture of Laozi. Depictions in tomb art do not only represent religious characteristics of Han beliefs, but also reveal further insights into technical aspects of immortal cultivation, providing a key new contextual window to the understanding of Han spirituality.
晚清常关考述  [PDF]
祁美琴
清史研究 , 2002,
Abstract: ?
唐代“涉外”婚姻制度考思  [PDF]
崔彩贤,付常辉
- , 2017,
Abstract: 随着我国“一带一路”战略的深入推进和近四十年改革开放的发展,我国对外开放的程度不断加深,与世界各国的交往日益扩大,面临的涉外问题也更加频繁和复杂。涉外婚姻家庭领域是国际私法最为复杂的一个分支,《法律适用法》对涉外婚姻的法律适用做了最基本的原则性规定。通过文献研究的方法,梳理了唐代涉外婚姻制度产生的时代背景,探究其基本理论,分析其基本内容和重要特质,对其积极性和局限性作出评价,并总结了唐代涉外婚姻制度对当代的启示,为进一步完善涉外婚姻法律适用的规定提供一定的借鉴思路
“思壮”虫草菌丝体胶囊免疫功能评价*
樊美珍,李春如,李增智,吕中明,石根勇,陈新霞
微生物学通报 , 2000,
Abstract: 将“思壮”虫草菌丝体胶囊(商品名)经口给予小鼠,在45、450(相当于成人每日每公斤推荐摄入量的10倍)和900mg/kg体重剂量下,在15~30d时,通过二硝基氟苯(DNFB)诱导小鼠迟发性变态反应(DTH)、血清溶血素试验和小鼠碳廓清试验,表明中、高剂量“思壮”虫草菌丝体胶囊具有增强小鼠细胞免疫功能,而3种剂量均能明显增强小鼠体液免疫功能和单核巨噬细胞吞噬功能,且有剂量-反应关系,由此证明“思壮”虫草菌丝体胶囊有明显的免疫调节作用。
氟苯尼考及氟苯尼考胺在西伯利亚鲟体内的药动学及组织分布  [PDF]
王瑞雪?,王 荻?,李绍戊?,卢彤岩?
上海海洋大学学报 , 2012,
Abstract: 采用液质联用法(hplc-ms/ms)建立了氟苯尼考和氟苯尼考胺同时检测的方法,研究了氟苯尼考口灌给药西伯利亚鲟后,氟苯尼考及其代谢物氟苯尼考胺在西伯利亚鲟体内的药动学和组织分布。水温22℃下,氟苯尼考以15mg/kg剂量单次口灌给药西伯利亚鲟,检测血浆、肝脏、肾脏和肌肉等组织中氟苯尼考及其代谢产物氟苯尼考胺的浓度,结果显示:氟苯尼考及其代谢产物氟苯尼考胺在西伯利亚鲟体内的药时数据均符合一级吸收二室开放模型,氟苯尼考在血浆中的达峰浓度(cmax)为3.4μg/ml,达峰时间(tpeak)为2.943h,表观分布容积(v/f)为3.267l/kg,消除半衰期(t1/2β)为31.21h,药时曲线下总面积(auc)为76.51μg·h/ml,cmax(ffa)/cmax(ff)和aucffa/aucff仅为5.44%和20.73%;氟苯尼考在各组织中分布广泛,分布规律相近,肝脏、肾脏中药物浓度较高。结果表明:氟苯尼考在西伯利亚鲟体内具有吸收迅速、达峰浓度高、消除相对缓慢及组织中分布广泛的特征且氟苯尼考主要以原形药物形式代谢消除。
学龄初期儿童思惟的发展
丁祖荫
心理学报 , 1984,
Abstract: 本文运用国内研究成果,对我国学龄初期儿童思惟发展作了概括叙述,具体地反映了我国学龄初期儿童在小学教育影响下,思惟形式、思惟基本过程、概念掌握、推理理解、以及思惟品质等方面的发展特点。并提出了促进儿童思惟进一步发展的培养要点。
从考词、考事看唐代考课程序与内容  [PDF]
霍存福
- , 2016,
Abstract: 唐《考课令》规定对官员的考课程序,唐代考课时的考词,与反映考课情况的实例,印证着该程序的实践情况。在唐代,官员个人及相关机构尤其是考功司,先后提出过考课制度实施的许多建议和意见。因而,考功司的履职情况与考课整顿问题,考词、考第作为指挥棒对官员行为的导向问题,唐考课制度在宋代的余续问题,都是值得关注且应该探讨的事项。
从考词、考事看唐代官员的考课标准  [PDF]
霍存福
- , 2015,
Abstract: 唐《考课令》规定对官员考课的内容及程序;唐律也有惩治考课时考、校不实的专门条款,但那只是制度。唐代考课的考词,野史笔记中较多存留,正史也有记载。同时,反映唐代考课情况的考课实例,简略提到官员的考课等级及事迹梗概,正史、野史都有一定程度的记载。此外,唐代官员个人及相关机构尤其是考功司,先后提出考课制度实施的许多建议和意见。将考词与考事结合起来进行研究,有助于了解唐代《考课令》及唐律考课条文的实施情况,及官场的实际状态。考词、考事的重要性,在于它们是研究当时行政、执法状况的第一手资料。
奥古斯特·魏思曼
任本命
遗传 , 2005,
Abstract: ~~奥古斯特·魏思曼@任本命$西安文理学院生物系!西安710061
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