oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 408 )

2018 ( 7888 )

2017 ( 8129 )

2016 ( 8691 )

Custom range...

Search Results: 1 - 10 of 354868 matches for " 王建晨 "
All listed articles are free for downloading (OA Articles)
Page 1 /354868
Display every page Item
从高放废液中去除锕系元素的TRPO流程发展三十年
陈靖,
化学进展 , 2011,
Abstract: 放射性废物,尤其是高放废物的妥善处理处置是各国政府和民众非常重视的一个问题,也是影响核能可持续发展的关键因素之一。高放废液是后处理Purex流程排放出来的废液,它集中了乏燃料中95%以上的放射性,其中α放射性核素的存在决定了需要将其处置在地质处置库中与生物圈隔离10万年以上。“分离-嬗变”方法处理高放废液可以有效缩减地质处置库与生物圈隔离的时限。TRPO具有良好的物性、辐照稳定性和对三价、四价和六价锕系元素良好的萃取选择性。基于此,我国提出了从高放废液中分离锕系元素的TRPO流程。多次热验证实验和中间规模冷台架实验结果证明TRPO流程处理我国生产堆高放废液,可完全实现高放废液的非α化。TRPO流程具有我国自主知识产权,在我国生产堆高放废液和动力堆高放废液处理中都具有良好的应有前景。
周围神经损伤的外科处理
Surgical Treatment of Peripheral Nerve Injury
 [PDF]

, 杨成勇, 陈群, 张明, 金光, 周雪梅
Asian Case Reports in Surgery (ACRS) , 2014, DOI: 10.12677/ACRS.2014.33003
Abstract:
目的:探讨周围神经损伤的外科处理技术及手术疗效。方法:临床各种神经损伤病例共36例,其中采用神经松解术治疗25例,神经吻合术8例,取腓肠神经桥接手术3例。所有病例术后均行神经营养药物及康复治疗。结果:经2~3年随访,其中优21例,良5例,中5例,差5例,观察其中疗效评价为中、差者均为神经移植患者及部分神经吻合患者。结论:周围神经损伤诊断一经成立,原则上手术越早越好。处理臀盖下结构以及胸廓出口周围对医师技术要求较高。主张早期、足量使用神经营养药物并进行早期功能锻炼。
Objective: To explore the surgical technique and curative effect of peripheral nerve injury. Methods: Altogether 36 cases with every kinds of peripheral nerve injury were treated by operation. 25 cases were treated by lytic operation, 8 cases were treated by anastomosis, and 3 cases were treated by nerve transplantation with sural nerve. All cases were treated by nerve nutrition drugs and recovery therapy. Results: The follow-up ranged from 2 to 3 years. Excellent results were obtained in 21 cases, good in 5 cases, fair in 5 cases and poor in 5 cases. The cases with poor or fair results were mainly because of nerve transplantation or nerve anastomosis. Conclusions: As soon as the diagnosis of peripheral nerve injury was confirmed, operation should be begun immediately. The technique of control the structure under greatest gluteal muscle and surrending thorax exit is difficult to surgeon. To emphasize using nerve nutrition drugs earlier and full dose, earlier functional exercise also be emphasized. 
对一次局地短时强降水过程的集合预报研究
,
高原气象 , 2008,
Abstract: 以上海区域降水集合预报系统为基础,对2007年6月23~24日发生在上海地区的一次短时强降水过程进行了集合预报研究。结果表明:该集合预报系统总体上对这次强降水过程作出了较好的预报,但对强降水发生的时间、地点的预报还有误差,集合预报提供的概率预报结果比集合平均预报结果更具有参考价值。模式物理过程、初值和侧边界的不确定性对降水预报结果的影响是不同的。对降水结果,模式对流参数化方案的影响非常大,并贯穿于整个积分过程;边界层参数化方案的影响较小;侧边界不确定性的影响在初始阶段较小,随后逐渐增大,积分一定时间后,其影响与对流参数化方案的影响相当;初值不确定性在初始阶段有一定的影响,随后逐渐减小。同时考虑3种不确定性的集合预报效果总体上好于没有考虑侧边界不确定性的集合预报效果,考虑模式物理过程和侧边界不确定性的集合预报效果总体上比考虑3种不确定性的集合预报效果更好。对于考虑模式物理过程和侧边界不确定性的集合预报,改进初值能有效地改进对有无降水的预报,但对强度稍大一些的降水预报没有改进。
电荷注入检测器电感耦合等离子体光谱仪测定非金属元素的分析性能
辛仁轩,
分析化学 , 2002,
Abstract: 研究了电荷注入检测器ICP光谱仪测定非金属元素的分析性能.以S、P、As、Se为代表的非金属元素在170~800nm波段内最灵敏的谱线均处于175~200nm远紫外区内.在此区内等离子体有很低的光谱背景发射和良好的谱线测量和背景测量的光度精度.标准曲线线性动态范围在4个数量级.给出了As、Se、S、P主要分析线的灵敏度、线背比、背景等效浓度及检出限.在纯水溶液中的检出限分别为:As189.142nm0.003mg/L,P213.618nm0.005mg/L,S180.731nm0.01mg/L,Se196.090nm0.009mg/L.
铝对稀土元素基体效应的研究
辛仁轩,
分析化学 , 2005,
Abstract: 研究了ICP光源中铝对稀土元素的影响。测定了0~1000mg/L铝(以氯化铝形式)对试液密度、粘度和提升量的影响。研究了铝对等离子体激发温度,Hα线半宽度及对MgⅡ/MgⅠ强度比的影响。结果表明,在所研究的Al浓度范围内,只要正确选择适宜的操作参数,铝的影响并不明显。稀土元素谱线强度的测定显示,在低观测高度处,Al对稀土元素(Eu、La、Nd、Y、Yb)有显著的抑制作用,随着观测高度的增加,Al的抑制效应逐渐消失。由此推断Al对稀土元素的抑制效应为蒸发原子化干扰,这可能是由于ICP光源中稀土元素与氧化铝形成难熔和难挥发的稀土铝酸盐类化合物有关。
带血管蒂腓骨移植治疗复杂性严重胫骨粉碎性骨折及骨缺损
Complicated Severe Comminuted Tibia Fracture and Bone Defects Repaired by Fibula Transplantation with Vascular (FTV)
 [PDF]

, 张明, 杨成勇, 潘晓瑾, 陆长美,, 金光
Asian Case Reports in Surgery (ACRS) , 2012, DOI: 10.12677/ACRS.2012.12003
Abstract:

目的:探索带血管蒂腓骨移植治疗复杂性严重胫骨粉碎性骨折及骨缺损的可行性和疗效。方法:采用取同侧带血管蒂腓骨转位移植或取对侧带血管蒂腓骨游离移植方式修复胫骨粉碎性骨折及骨缺损共48例,均一期手术处理。结果:本组经2~3年随访,优35例,良10例,中2例,差1例。结论:处理复杂性严重胫骨粉碎性骨折及骨缺损,应高度重视一期腓骨移植的重要性。带血管蒂腓骨移植一期修复胫骨骨缺损具有可行性,但其骨愈合时间普遍较长。
Objective: To explore the availability and curative effect of the reconstruction through Fibula Transplanta- tion with Vascular (FTV) in the cases of complicated severe comminuted tibia fracture and bone defects. Methods: 48 cases of complicated severe comminuted tibia fracture and bone defects were repaired by homopleural FTV transplanta- tion and contralateral free FTV transplantation. All cases were treated by primary operations. Results: The follow-up ranged from 2 to 3 years. Excellent results were obtained in 35 cases, good in 10, fair in 2, and poor in 1 case. Conclu- sions: To treat complicated severe comminuted tibia fracture and bone defects, the primary FTV should be attached great importance to. There are positive availabilities in the reconstructions of tibia bone defects with primary FTV. But the time of bone union was rather longer.

芳基氟硼酸盐同芳香胺“一锅法”Suzuki-Miyaura反应有机化学
韦珊红, , , 程凯
有机化学 , 2013, DOI: 10.6023/cjoc201306008
Abstract: 研究了一种钯催化的芳香胺通过“一锅法”的Suzuki-Miyaura反应制备联苯类化合物.该反应以水作为溶剂,无需分离重氮盐中间体,直接加入芳基氟硼酸钾、碱和催化剂,即可较高产率地得到偶联产物.反应无需加热和惰性气体保护,具有良好的官能团耐受性,是一种绿色高效的偶联方法.我们通过热力学计算推测了碱的加入对于反应的促进作用.
水溶性氧杂酰胺类化合物的合成及表征有机化学
张平,海荣,,陈靖
有机化学 , 2008,
Abstract: 以二甘醇为原料,经氧化得到的二甘酸,通过氯代或缩合反应得到中间体酰氯和酸酐,二烷基胺在吡啶催化下与酰氯或酸酐发生胺解反应,合成出系列水溶性氧杂单酰胺及氧杂双酰胺,包括N,N-二烷基-3-氧杂-戊酰胺酸系列和N,N,N'N'-四烷基-3-氧杂-戊二酰胺系列(烷基包括甲基、乙基和丙基).用IR和1HNMR对合成的目标产物进行了表征.
扩大碟形术加带血管蒂腓骨游离移植治疗胫骨慢性骨髓炎
Treatment of Chronic Tibia Osteomyelitis by Enlarging Saucerization and Free Fibula Transplantation with Vascular (FTV)
 [PDF]

, 杨成勇, 张明, 马明, 沈书明, 金光, 陆长美,, 陈群, 汝渔
Asian Case Reports in Surgery (ACRS) , 2012, DOI: 10.12677/ACRS.2012.13004
Abstract:

目的:探索扩大碟形术加带血管蒂腓骨游离移植治疗胫骨慢性骨髓炎的可行性和疗效。方法:12例胫骨慢性骨髓炎患者行胫骨骨髓炎病灶清除、扩大碟形术,取对侧带血管蒂腓骨游离移植,修复患侧胫骨切除后缺损,置冲洗引流管。结果:经2~3年随访,优5例,良6例,中1例,绝大部分病例胫骨碟形化部经重建修复后在13~18月内满意愈合,恢复行走功能,少部分病例术后切口有轻微感染。经随访发现,随着骨缺损部逐渐愈合,移植来的腓骨会逐渐塑形、增粗,并与受区胫骨融为一体。结论:扩大碟形术加带血管蒂腓骨游离移植治疗胫骨慢性骨髓炎具有可行性和较满意之疗效,强调骨髓炎手术适应症的正确把握和感染病灶清除的适当彻底,须注意围手术期全程的规范化管理。

To explore the availability and curative effect of the reconstruction through enlarging sauceriza-tion and Fibula Transplantation with Vascular (FTV) in the cases of chronic tibia osteomyelitis. Methods: Altogether 12 cases of chronic tibia osteomyelitis were treated by massive resection of bone, enlarging saucerization and tibia defects were reconstructed by opposite FTV. Douche and drainage-tube were inserted after operation. Results: The follow-up ranged from 2 to 3 years. Excellent results were obtained in 5 cases, good in 6, fair in 1 case. Mainly cases with tibia enlarging saucerization defects treated by reconstructive repairment were unioned satisfactory after 13 - 18 months. Walk functions were recovered. A few cases were slightly infected in wound. Observing in followed, during the union of bone defects, (ftv) fibula was plastotyped strongly and the fibula and tibia were unioned totally. Conclusions: To treat the chronic tibia osteomyelitis by enlarging saucerization and Free Fibula transplantation with vascular (FTV) should be attached feasible and satisfactory curative effect. To emphasize grasping the operation indication rightly, and the infect focus debridement were cleared suitable thoroughly. The standard administration in whole course of operation should be paid attention.


一起小尾寒羊黄花棘豆中毒病例的诊断与治疗
Diagnosis and Treatment of Small Tail Sheep Poisoning with Oxytropis ochrocephala
 [PDF]

郝宝成,,, 保海, 胡永浩, 梁剑平
Asian Case Reports in Veterinary Medicine (ACRPVM) , 2015, DOI: 10.12677/ACRPVM.2015.41001
Abstract:
本文报告了2014年10月3日甘肃省兰州市榆中县一羊养殖厂发生一起小尾寒羊集体疑似疯草中毒事件。疑似中毒羊为不同年龄、性别的多只小尾寒羊。经对询问饲养人员饲养情况,观察疑似中毒羊各种症状,如后肢无力、目光呆滞、不食、消瘦、犬坐式、头颈后仰、手提羊耳出现转圈运动,对放养草地采集植物观察、辨认、比较后,诊断为典型的小尾寒羊疯草中毒。
A case of suspected locoweed poisoning of small tail sheep was reported, which happened in Yuz-hong County, Lanzhou city, Gansu province, in October 3, 2014. The suspected poisoning sheep have different ages and genders. Through asking the keeping staff the feeding condition of the sheep, ob-serving a variety of symptoms of suspected poisoning sheep such as hind limb weakness, eyes dull, not eating, weight loss, dog sitting type, head and neck back and circular motion when handing sheep ears, and observing, identifying and comparing the collecting plants of the grazing grassland, it is diagnosed to be a typical locoweed poisoning disease.
Page 1 /354868
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.