oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 57 )

2018 ( 1345 )

2017 ( 1329 )

2016 ( 1389 )

Custom range...

Search Results: 1 - 10 of 60278 matches for " 朱加进 "
All listed articles are free for downloading (OA Articles)
Page 1 /60278
Display every page Item
苦菜中防便秘抗腹泻功能因子研究
加进,何国庆
食品科学 , 2002,
Abstract: ?苦菜具有治疗痢疾的作用。经研究发现:它还具有抗便秘作用,不但苦菜茎叶有很强的抗便秘作用,而且苦菜浸出物也有较强的抗便秘作用。为确定苦菜中抗便秘功能因子,本文对苦菜中可溶性多糖和果胶物质既抗便秘又防腹泻的双向作用进行了研究。结果表明:苦菜多糖和苦菜果胶能够较强地促进小鼠小肠的蠕动,且能明显地减少小鼠排便次数,延长开始排便时间。揭示苦菜多糖或苦菜果胶是苦菜防腹泻、抗便秘双向作用的有效成分之一,并且苦菜果胶的作用优于苦菜多糖。
传递函数在地下工程地震响应研究中的应用
盛谦,崔臻,加进,冷先伦
岩土力学 , 2012,
Abstract: 将传递函数引入地下工程地震响应的研究,提出利用传递函数进行地下工程地震响应的频谱特性分析、地震响应时频估算以及地震动输入频谱修正的3种应用方法。基于白鹤滩水电站13#机组剖面地下洞室群,对这3种方法进行了探讨及检验。结果表明:传递函数可清晰表达地下工程在地震动作用下的输入、输出关系,描述洞室群各部位的动力特性,且与其他频谱特性研究方法得出的结论相一致。在自下而上的地震剪切波作用下,洞室底板部位的响应整体强于顶拱部位,且具有不同的主频段;但在3~4hz频段,顶拱的动力响应强于底板。采用有限带宽随机白噪声算得洞室群各部位的传递函数,再根据传递函数进行实际地震响应时频估算的方法是可行的,估算与验算结果吻合良好,该方法可以大幅度减少计算量,使得根据有限的计算结果把握特定工程的整体动力响应特征成为可能。根据已有研究成果,取洞室底部或河谷水面为地震响应的频谱控制点,基于传递函数对输入地震动时程进行频谱修正,可保证地下工程动力响应地震动输入机制的合理性
基于小波包的地下洞室群地震响应及其频谱特性研究
崔臻,盛谦,加进,冷先伦
岩土力学 , 2010,
Abstract: 基于有限差分数值模拟,在合理选择地震动力分析阻尼参数的条件下,开展白鹤滩水电工程13#机组剖面地下洞群围岩地震响应研究,并结合小波包变换方法从加速度峰值及振动能量角度评价了地震波在岩体中的传播规律及洞室群不同区域地震响应的频谱特征。结果表明:地震波传播过程中强度随高程增加而增加,层间错动带有一定减震作用;小波包分解可以较全面地给出地震响应成分的频率分布;地震波的高频分量在岩体传播过程中逐渐衰减;在地下洞室群附近,岩体地震响应的加速度峰值和振动能量频谱特征以1~3hz频段为主,其他频段对岩体地震响应影响较小。
激光等离子体中的快离子发射
徐至展,张燕珍,殷光裕,徐毓,加进,李弘毅
科学通报 , 1982,
Abstract: 快离子的发射是激光与等离子体相互作用研究中的重要课题[1,2],本文报道使用波长1.06μm、脉宽100ps、靶面强度为(1013—5×1014)W/cm2的单束激光与多种材料平面靶相互作用时,快离子发射特性与激光强度及靶原子序数的依从关系.
激光等离子体相互作用中的二次谐波发射
徐至展,徐毓光,殷光裕,张燕珍,加进,李弘毅
科学通报 , 1982,
Abstract: 为了判别激光等离子体相互作用中发射二次谐波(2ω)的不同机制,特别是研究呈现较复杂结构的2ω谱成分的发射规律,我们已在相当宽的激光强度范围(1012—1015w/cm2)、不同的激光偏振与各种激光入射角(0°,20°,45°等)情形下,系统地观察了2ω的空间分辨的后向、90°方向散射的谱及其二维分辨的空间发射特性。
鸟类羽髓细胞培养方法的建立及其细胞增殖动力学研究

动物学研究 , 1987,
Abstract: 采用常规的外周血培养技术很难获得足够分析的鸟类细胞中期染色体标本。目前为止,对于鸟类的细胞遗传学研究仍采用骨髓制备染色体的方法,但这种方法不能用于对一些稀有珍禽的研究。 为研究鸟类细胞遗传学,我们建立了鸟类羽髓细胞离体短期培养的方法。应用这种方法,经48小时培养就可收获细胞并制备染色体标本。同时,还应用姐妹染色单体差别染色技术(SCD),对羽髓细胞的增殖周期进行了研究并取得成功。 实验表明,我们所建立的鸟类羽髓细胞培养方法具有:(1)取材容易,(2)增殖迅速,(3)操作简便的特点。
血液透析患者颈内静脉长期导管的护理体会
Nursing Experience of Jugular Vein Catheters in Hemodialysis Patients
 [PDF]


Nursing Science (NS) , 2014, DOI: 10.12677/NS.2014.33009
Abstract:
目的:研究维持性血液透析患者的深静脉长期导管的护理方法,总结护理体会,以延长维持性血液透析患者颈内静脉长期导管的使用。方法:对41例进行颈内静脉长期置管的透析患者进行回顾性分析,总结护理方法对导管相关并发症的影响。结果:41例患者中有1例出现全身感染,经抗感染治疗,以及用庆大霉素封管后好转;1例导管出口处皮肤感染,用药后控制;7例引流不畅,6例经调整导管以及尿激酶封管溶栓后血流恢复正常,1例拔管。结论:正确使用和护理血液透析患者的深静脉长期导管,可有效减少其导管并发症发生。
Objective: From studying nursing methods of the long-term maintenance hemodialysis patients with deep vein catheter and summarizing the nursing experience, to extend the use of long-term internal jugular vein catheters in patients with maintenance hemodialysis. Method: We retrospec-tively analyzed 41 cases of internal jugular vein catheter long-term dialysis patients and summa-rized the nursing methods influence of catheter-related complications. Results: 1 of 41 cases had systemic infection and was improved after the anti-infection treatment and using gentamycin sealing tube; 1 case had catheter exit skin infections and was controlled by using the anti-infection medicine; 7 cases had poor drainage. 6 of them were back to normal after adjusted catheter and urokinase seal tube blood flow, 1 case of them had to draw the catheter out. Conclusion: The right nursing care and use of long-term deep vein catheter can effectively reduce the catheter complica-tions of hemodialysis patients.
浅谈无机化学课堂学生兴趣的培养
Discussing on Training the Students Interest in Inorganic Chemistry Classroom
 [PDF]

龙凤
Creative Education Studies (CES) , 2016, DOI: 10.12677/CES.2016.41003
Abstract:
无机化学是一门重要基础专业课,对后面的专业课学习有着承前启后作用。在无机化学教学中需要重点关注的地方是如何激发、培养、拓展和巩固学生的学习热情和兴趣,这些可以通过上好绪论课、采用多种教学方式和手段、通过实例把知识传授给学生、改革评价方式等多种方法来实现,进而提高学生的学习能力、实践能力和创新能力,进而取得良好的教学效果。
Inorganic chemistry is an important basic course, which acts as a link on the back of the profes-sional course study. Inorganic chemistry teaching needs to focus on how to stimulate, cultivate, develop and strengthen students’ learning enthusiasm and interest, which can be achieved through good introduction, using a variety of teaching methods and means, introducing knowledge through the examples, changing evaluation methods, etc. To improve the students’ learning ability, practice ability and innovation ability, good teaching effect can be achieved.
基于变分水平集方法的散乱数据曲面重构研究
Surface Reconstruction from Scattered Data Based on Variational Level Set Method
 [PDF]

云云, 华平
Journal of Image and Signal Processing (JISP) , 2016, DOI: 10.12677/JISP.2016.52007
Abstract:
工程学和医学等领域中的很多问题进行抽象后可转化为散乱数据的光滑曲面重构问题。在散乱数据附近设定初始轮廓,将初始轮廓间接地表示为水平集函数的零水平集形式,最终将初始活动轮廓的演化转化成水平集函数的演化。定义一个以水平集函数为自变量的能量泛函来度量它与散乱点的逼近程度,利用改进的变分水平集方法演化初始轮廓,达到重构目的。本文中,一是对Heaviside函数进行改进,使初始轮廓能更好的收敛于目标轮廓;二是给出了模型数值计算的具体过程,并以二维实例说明散乱数据重构的效果。
A lot of problems in the field of engineering and medicine after abstraction can be converted into scattered data reconfiguration problems. We set initial contour near the scattered data, expressed as the zero level set of the level set function, which will eventually turn the evolution of initial active contour into the evolution of the level set function. We define an energy functional who takes the level set function as its independent variable, to measure approximation degree with the scattered data, and use the improved variational level set method to evolve the initial contour and achieve reconstruction. In this paper, firstly, putting forward an improved Heaviside function to make the initial contour can better converge in the target contour; secondly, the specific process of numerical calculation model is given, and a two-dimensional example illustrates the effect of the scattered data reconstruction.
TIME-RESOLVED MEASUREMENT OF SOFT X-RAY EMISSIONS FROM LASERPRODUCED PLASMAS
激光等离子体软x光辐射的时间分辨测量

Wang Xiaofang,Xu Zhizhan,Chen Shisheng,Qian Aidi,Fan Pinzhong Zhang Zhengquan,Lin Lihuang,Yu Jiajin,Lu Peixiang,Feng Xianping,
王晓方
,徐至展,陈时胜,钱爱娣,范品忠,张正泉,林立煌,加进,陆培祥,冯贤平,龚美霞,山冰,高胜琛,张小秋

光子学报 , 1991,
Abstract: Time resolved soft x-ray (SXR) spectra of copper laser plasmas are measured by involving a SXR streak camera with a SXR transmission grating. The response charac-teristics of the streak camera in the 5A - 100A SXR range is investigated by comparing time-integrated real spectra with time-resolved spectra. Temporal variations of different emission bands from the plasmas are presented.
Page 1 /60278
Display every page Item


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