3DS MAX R2.5和3DS VIZ R2闪亮登场

据悉,Autodesk公司的多媒体分部Kinetix公司宣布,基于3DS MAX平台的两个三维解决方案的最新版本现已发行。一个是三维动画及造型软件3D Studio MAX R2.5;另一个是较新的获奖软件3D Studio VIZ R2,这是一个概念化和可视化的三维设计软件。     

3ds Max与Combustion的综合应用

三维动画软件3ds Max和后期全成软件Combustion的结合使用是提高影视动画制作质量和效率的捷径。本文给出了一个使用3ds Max和Combustion制作影视动画的实例,详细地说明了创作思路、技术要点和制作流程。     

谈八视点裸眼3D视频的制作技巧--河北电视台新闻中心裸眼3D宣传片制作心得

制作精良的3D视频,是每一个制作人员追求的目标。目前裸眼3D的制作方法很多,3dsMax、Maya、Cinema 4D等三维制作软件在新版本中也相应推出了裸眼3D渲染插件,本篇以河北电视台新闻中心裸眼3D宣传片为例,详细介绍了裸眼3D的原理,显示技术,以及用3DMAX软件制作裸眼3D的方法。     

3ks Max与Combustion的综合应用

三维动画软件3ds Max和后期合成软件Combustion的结合使用是提高影视动画制作质量和效率的捷径.本文给出了一个使用3ds Max和Combustion制作影视动画的实例,详细地说明了创作思路,技术要点和制作流程.     

三大看图软件横向评测

Symbian OS软件资源颇多,通过我的筛选,选出了其中功能齐全且运行稳定的3款软件:ArcSoft PhotoBase、SplashPhoto和Resco Picture Viewer,下面就对这3款看图软件进行一个对比介绍!     

软件无线电技术在无线通信系统中的应用

无线通信系统往往采用不同的制式、工作在不同的频段，因此无法互通和兼容。软件无线电技术通过构造一个具有开放性、标准化、模块化的通用硬件平台，用软件来完成各种功能，可用于研制具有高度灵活性和开放性的新一代无线通信系统。介绍了软件无线电的基本结构和关键技术．然后分别叙述了软件无线电在cdmax 1x基站和3G中的应用，最后指出了软件无线电技术在3G中的重要性。     

倒计时字幕在大洋非编中的制作

新一代的D3-Edit软件,从根本上适应广播电视制作业务发展的要求,向用户展示了一个全新概念的数字桌面环境.D3-Edit具备了足够的功能性和易用性,同时有着完全开放的可扩展性.CPU GPU I/O技术的应用,使得D3-Edit同时拥有高实时性,丰富特技,全接口,是一款高性价比的非线性编辑软件.     

Blackmagic Design发布Teranex 3.1版软件更新

Blackmagic Design为Teranex 2D、3D和Express转换器发布重要软件更新。Teranex 3.1软件增加了一个新的软件应用程序,可让用户通过电脑远程设定或更改Teranex转换器的设置,还为Teranex Express型号新添了将12G-SDI转换为四链路HD-SDI的功能。Teranex 3.1软件现已通过Blackmagic Design网站提供免费下载。     

Symbian OS三大看图软件横向评测

Symbian OS软件资源颇多，通过我的筛选，选出了其中功能齐全且运行稳定的3款软件，ArcSoft PhotoBase、SplashPhoto和Resco Picture Viewer，下面就对这3款看图软件进行一个对比介绍！     

联想推出首款3D笔记本

近日,联想发布了其第一款3D笔记本电脑。 联想称,新的联想IdeaPad Y560d笔记本电脑包括一个15．6英寸显示屏、3D眼镜以及使这款笔记本电脑更有吸引力的软件。     

系统性淀粉样变性的超微病理诊断

目的:应用光镜(LM)及透射电镜(TEM)观察不同部位淀粉样物质的沉积及超微结构特点,为系统性淀粉样变性提供可靠的病理诊断依据.方法:对21例临床拟诊为系统性淀粉样变性病例的肾脏,腹壁脂肪和直肠粘膜活检组织按常规进行LM及TEM标本制备及病理检查.结果:LM观察显示淀粉样物质在肾脏,腹壁脂肪和直肠粘膜沉积阳性率分别为7...     

测量不确定度的实验研究

该文在电源线传导发射测试的基础上对测量不确定度在电磁兼容测试中的影响进行了统计分析。该文分析了A类和B类标准不确定度以及系统误差。结果表明实验布置的细微差别都会给测试结果带来很大的影响。     

基于S-CDMA的HFC接入网技术分析

针对HFC网络上行信道的噪声和干扰特性,论述一种基于S-CDMA(同步码分多址)技术的上行信道传输方案,对S-CDMA技术及工作原理和系统组成进行分析,给出了S-CDMA在有线电视宽带网中的具体应用。     

时间积分声光相关器相关峰提取技术的实验研究

本文根据声光相关原理,针对时间积分声光相关器的相关峰提取问题,提出了系统实施方案,建立了实验系统的数学模型,设计和制作了系统的光路和电路,最终成功地提取出了相关峰,得到了与理论分析一致的实验结果,使系统增益达到５１．９ｄＢ。     

变频器功率单元采用电磁兼容原则的新结构研发

系统法是解决电磁兼容性的先进方法，它集中了电磁兼容方面的研究成果，根据电磁兼容要求进行最佳工程设计的方法。多电平单元串联电压源型变频器的功率单元新结构研发中，充分应用系统法，从设计开始就预测和分析电磁兼容性，并在设计、制造、组装和实验过程中不断对其电磁兼容性进行预测和分析，使在正式产品完成之前解决90％的电磁兼容问题。在新单元研发完成后，对其进行电磁兼容性能测试，一次性通过了电快速瞬变脉冲群、静电放电、电磁发射抗干扰度的严酷工业环境等级抗干扰测试。     

脉冲压缩雷达距离旁瓣的消除

由于伪随机码的非正交相关特性，用ｍ序列的伪随机码进行相位调制的脉冲压缩雷达会产生距离旁瓣。多目标情况下，距离旁瓣的影响不能忽略。分析发现这种距离旁瓣干扰可以作为系统性干扰对待通过扣除这种系统性干扰，可以完全消除距离旁瓣的干扰。     

In vitro identification of four-element windkessel models based on iterated unscented Kalman filter

Mock circulatory loops (MCLs) have been widely used to test left ventricular assist devices. The hydraulic properties of the mock systemic arterial system are usually described by two alternative four-element windkessel (W4) models. Compared with three-element windkessel model, their parameters, especially the inertial term, are much more difficult to estimate. In this paper, an estimator based on the iterated unscented Kalman filter (IUKF) algorithm is proposed to identify model parameters. Identifiability of these parameters for different measurements is described. Performance of the estimator for different model structures is first evaluated using numerical simulation data contaminated with artificial noise. An MCL is developed to test the proposed algorithm. Parameter estimates for different models are compared with the calculated values derived from the mechanical and hydraulic properties of the MCL to validate model structures. In conclusion, the W4 model with an inertance and an aortic characteristic resistance arranged in series is proposed to represent the mock systemic arterial system. Once model structure is appropriately selected, IUKF can provide reasonable estimation accuracy in a limited time and may be helpful for future clinical applications.     

Automated scanning electron microscopy and x-ray microanalysis for in situ quantification of gadolinium deposits in skin

Gadolinium (Gd) has been identified as a possible causative agent of an emerging cutaneous and systemic fibrosing disorder, nephrogenic systemic fibrosis (NSF), which can cause serious disability and even death. To date, there are only two known associations with this disorder--renal insufficiency and Gd enhanced magnetic resonance imaging (MRI). We developed an automated quantitative scanning electron microscopy (SEM) and Energy dispersive x-ray spectroscopy (EDS) method for Gd in tissue of NSF patients. Freshly cut paraffin block surfaces examined using the variable pressure mode under standardized conditions and random search of the tissue area allow in situ detection and semiquantitative morphometric (volumetric) analysis of insoluble higher atomic number features using backscattered electron imaging. We detected Gd ranging from 1 to 2270 cps/mm2 in 57 cutaneous biopsies of NSF. Gd was associated with P, Ca, and usually Na in tissue deposits. Our method reproducibly determines the elemental composition, relative concentration, and spatial distribution of detected features within the tissue. However, we cannot detect features below our spatial resolution, nor concentrations below the detection limit of our SEM/EDS system. The findings confirm transmetallation and release of toxic Gd ions in NSF and allow dose-response analysis at the histologic level.     

Ni-Alginate Hydrogel Microspheres with Sustained Interleukin 2 Release to Boost Cytokine-Based Cancer Immunotherapy

Interleukin 2 (IL2) is the first approved immunotherapeutic agent in cancer treatment. However, high-dose IL2 administrated through intratumoral injection still spreads all over the body, causing serious systemic toxicity. Herein, an injectable nickel-alginate hydrogel microsphere (Ni-ALGMS) to allow effective loading of IL2 and its sustained release after intratumoral administration is reported. In this design, histidine (his)-tagged IL2 is assembled into the Ni-ALGMS via the coordination bonds between his-tag and Ni²⁺. After injecting IL2-loaded Ni-ALGMSs (IL2@Ni-ALGMSs) into the tumor, IL2 slowly releases over long periods, thereby avoiding the risk of cytokine storm happening in IL2 systemic administration. Applying such IL2@Ni-ALGMSs for tumor model treatment can significantly increase the tumor infiltration of T lymphocytes, and effectively inhibit tumor growth, especially in combination with immune checkpoint inhibitors. This study presents a novel IL2 sustained-releasing platform for tumor immunotherapy, which can also be conveniently applied in other cytokines-based immunotherapies.     

不同冲管溶液对预防PICC置管期间血栓性静脉炎的效果研究

目的：探讨肝素稀释液在预防PICC置管期间血栓性静脉炎的效果。方法：选择2006-2009年期间,在我科行PICC置管,排除凝血功能障碍及血液系统疾病的患者128例,随机分为实验组和对照组,实验组64例,在输液前后抽取肝素稀释液（浓度为10u/ml）5ml至10ml行冲管和正压封管,输液间歇期,用同样肝素稀释液5ml至10ml行冲管和正压封管,每周2次。对照组64例只用0.9%NS冲管和正压封管,方法与实验组相同。观察2组病人置管后1个月内发生静脉炎的临床表现、血浆钎维蛋白原（FIB）值的变化,并对有典型临床症状患者分别进行血液D-二聚体值及彩色多普勒超声检查。结果：对照组有明显静脉炎表现者13例,实验组6例,通过血D二聚体值测定和彩色多普勒超声检查显示,对照组13例患者中,9例患者符合血栓性静脉炎诊断标准,4例为非血栓性静脉炎,实验组的6例患者中,均不符合血栓性静脉炎诊断标准,血浆钎维蛋白原（FIB）值的变化,两组患者有显著差异。结论;用低浓度肝素稀释液冲管和封管,对排除凝血功能障碍及血液系统疾病的患者,可有效预防PICC置管期间血栓性静脉炎的发生。