高频率
- 与 高频率 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
Furthermore, 142 accessions could be divided into three major groups using the clustering analysis, indicating that the gliadin variations among durum wheat were associated with their geographic origin.
高分子量谷蛋白电泳共分离出14种亚基和15种亚基组合,但是优质亚基所占比例不高,这可能是因为硬粒小麦加工用途的特殊性,使得多年的育种并未太多改变硬粒小麦高分子量谷蛋白亚基等位变异的频率,促成优质亚基的累计。
-
AML patients with FLT3-LM was associated with a higher peripheral white cell count and a higher percentage of bone marrow blast cells but no lower complete remission rate tendency or shorer survival time camparing with FLT3-LM negative patients.
FLT3长度突变是AML中发生频率较高的一类突变;突变患者临床特征表现为外周血高白细胞,骨髓高原始细胞;FLT3长度突变与诱导缓解率和总生存时间无关。
-
The metal magnetic material was adopted to satisfy EMI resistance equipment in GHz frequency, due to its higher saturation magnetic susceptibility than the ferrite material, lamella structure and higher frequency in Snoek limit than that of the ferrite material.
由于金属磁性材料的饱和磁感应强度高过于铁氧体,微波段的磁导率高,有利于实现薄层化, Snoek极限值所到达的频率高过于铁氧体材料,所以可以采用金属磁性材料来满足GHz频段抗干扰器件的要求。
-
In this paper, Stencil Field Sequential Color (Stencil-FSC) is proposed, and we first utilize a "multi-color field" instead of a conventional "signal-color field" in the color sequence display. The Stencil-FSC method not only can suppress CBU effectively but also can be realized on LCDs by present LC techniques, such as OCB mode LC. Moreover, the method can achieve the a novel green display with ultra-low power consumption (5 Watt for 32 LCD-TV) and high contrast ratio (~6500:1). Consequently, the concept and the results of the paper may complete a next generation color filter less display with high image quality and ultra-low power consumption.
此篇论文中提出利用多色影像於单一色场的新色序法概念,此想法不但跳脱以往只使用单色场影像之基本架构,并可大幅改善色分离现象,使场色序液晶显示器之影像画质可以被观赏者接受,且操作频率为现行液晶可达到的反应时间内(40 Hz/field);另外,此技术亦可同时达成低功率消耗(5 Watt for 32 LCD-TV)及高动态对比度(~6, 500:1)之新型绿色节能高画质显示技术,因而此论文的构想与成果将有可能使未来液晶电视转成免彩色滤光片且具高画质、低耗能之显示架构。
-
The quantity computed is the expected clutter power at the output of any specified range gate by the method of integrating reflected energy between constant Doppler loci in range-gate circles with a model of sum and difference antenna gain pattern for APAR. Base on the analyzing of APAR terrain clutter spectrum, Rayleigh, Correlated Log-Normal and Weibull distribution terrain clutter of APAR general pulse signal was simulated with the method of zero memory nolinearity transform.④The Doppler frequency of target echo is simulated on video frequency in this dissertation.
该软件采用了用C语言建立框架结构,而在程序高重复部分和有运算速度要求的地方,用汇编语言编写具有高并行能力程序的方法,不仅满足了系统高运算速度和实时性的要求,也使得软件系统结构模块化,代码具有良好的维护性和重用性;③对机载相控阵雷达HPRF、MPRF的和、差通道地面杂波功率谱进行了较为全面的研究,通过建立由四个子波束构成的机载相控阵雷达杂波和差波束天线方向图数学模型,选取体现高度线杂波的修正的地面后向散射模型,以载机平飞为例,采用沿距离门——等多普勒线区域积分的方法,得到了杂波功率谱,并利用零记忆非线性变换法实现了机载相控阵雷达常规脉冲情况下瑞利分布、对数正态分布和韦布尔分布地面杂波的模拟;④提出了采用在视频上对目标回波的多普勒频率进行模拟的方法。
-
The multipath effect is an avoidless problem which the tracking radar and the searching radar among CIWS has to face. This paper analyses the form of the multipath effect on geometry, emphasizes the distance difference between the direct wave and the reflected wave, according to this inherent characteristic, the paper introduces the theory of HRR to the design of radars among CIWS, discusses the spike pulse technology and ultra wide hand technology which often be used, finally proposes the method of time-frequency code to obtain the high range resolution and avoid the multipath effect.
多路径效应是近程反导武器系统中的搜索雷达和跟踪雷达均无法避免的问题,文中分析了多路径效应形成的几何原理,并根据多路径效应中的直射波与反射波具有路程差的固有特性,将高距离分辨率雷达信号理论引入到近程反导武器系统的雷达中,讨论了实现高距离分辨率的窄脉冲和超宽带技术,最后提出了目前较易实现的时间-频率码合成高距离分辨率的办法。
-
objective to evaluate efficacy of extracorporeal shock wave lithotripsyfor treating ureteral stones in situ,investigate the cause of higher re-treatment rate.methods total of 687 patients with ureteral stone were received eswl between january 2000 and december 2004,included 455 male(66.2%) and 232 female(33.8%) patients,6 cases have bilateral ureteral calculi,12 cases have unilateral multiple calculi.hence,together 709 ureteral calculi were treated.patients upper ureteral calculi were treated in the supine position,for lower ureteral calculi patients were turned prone.to reduce eswl-induced renal trauma and pain,using lower energy source,adjusted power setting from 9.8 to 13.2kv,limited 1500 shock wavs per one session.no auxiliary procedure were used before eswl.the stone size was measured as the surface area of stone length by stone width on x-ray film.the interval between two treatment sessions was two weeks.results of 709 ureteral calculi,the overall stone free rate was 97.3%(690 calculi),re-treatment rate was 34.1%(292 calculi).according to the performed treatment sessions,one session 467 calculi,the mean stone size 37.27mm2,stone free rate 65.4%(464 calculi).two sessions 138 calculi,the mean stone size 62.48mm2,stone free rate 18.4%(131calculi).three sessions 52 calculi,the mean stone size 79.60mm2,stone free rate 7.1%(50calculi).four sessions 19 calculi,the mean stone size 101.63mm2,stone free rate 2.4%(17calculi).fivesessions 33 calculi,the mean stone size 119.33mm2,stone free rate 3.9%(28 calculi).overall 19 cases(2.7%)turned to other treatment modalities.of 335 upper ureteral calculi,303 achieved stone free (95.8%),re-treatment rate was 38.5%(129 calculi).of 374 lower ureteral calculi,369 achieved stone free(98.7%),re-treatment rate was 30.2%(113 calculi).the re-treatment rate of upper ureteral calculi was higher than lower ureteral calculi(p<0.05,χ2=5.40).the difference of stone-free rate between upper and lower ureteral calculi was no significant(p>0.05,χ2=0.15).conclusion eswl should be considered first line therapy for ureteral stone still.stone burden are the main variable of higher re-treatment rate,upper ureteral stone may moving with respiring during eswl.so efficinet shock wave was decreared,re-treatment rate become higher.
目的 评估体外震波碎石治疗输尿管结石的疗效,探讨再治疗率高的原因及输尿管结石的治疗选择。方法回顾2000年1月~2004年12月间eswl治疗输尿管结石的临床资料687例,男455例(66.2%),女232例(33.8%),平均年龄46.6岁(15~83岁)。有双侧输尿管结石6例,单侧多发性输尿管结石12例(4颗1例,3颗2例,2颗9例),共计输尿管结石709颗(含透光结石13颗)。应用上海爱申公司生产的desunit6030型碎石机,c臂x线球管做结石定位。上段输尿管结石(肾盂输尿管交界处至骶髂关节上缘)取仰卧位,下段输尿管结石(骶髂关节上缘下至输尿管口)取俯卧位。为减少eswl引起的肾损伤和疼痛,应用较低的能量,震波发生器电压从9.8~13.2kv,震波频率1.5s。每次治疗设定为1500次震波。治疗后3天摄腹部平片或b超,以后每隔7日重复检查。假如结石未碎或有残留结石最长径>3mm以上,再次eswl,两次治疗的间隔时间为两周。结石的大小用x线片上的表面积(mm2表示。结果 709颗输尿管结石总的治愈率为97.3%(690颗),再治疗率34.1%(242颗)。其中一次治疗467颗,平均结石大小37.27mm2,治愈464颗(65.4%),3颗改治疗;两次治疗138颗,平均结石大小62.48mm2,治愈131颗(18.5%),7颗改治疗;第1和第2次治疗治愈率(1个月治愈率)为83.8%。3次治疗52颗,平均结石大小79.60mm2,治愈50颗(7.1%),2颗改治疗;4次治疗19颗,平均结石大小101.63mm2,治愈17颗(2.4%),2颗改治疗;5次及5次以上治疗33颗,平均结石大小119.33mm2,治愈28颗(3.9%),5颗改治疗。总计19颗(2.7%)结石改变治疗方式。上段输尿管结石335颗,治愈321颗(95.8%),再治疗129颗(38.5%)。下段输尿管结石374颗,治愈369颗(98.7%),再治疗113颗(30.2%)。经χ2检验,上、下段输尿管结石的再治疗率差异有显著性(χ2=5.40,p<0.05),治愈率差异无显著性(χ2=0.15,p>0.05)。不良反应:血压升高13例(1.9%),震波区域疼痛26例(3.8%),震波进入处皮肤点状淤血33例(4.8%),肉眼血尿128例(18.6%),均于第2、3天自行消失。结论 eswl目前仍是输尿管结石的第一线治疗,结石的大小是再治疗率高的主要因素。结石的位置有影响,上段输尿管结石可随呼吸移动,有效震波次数减少,再治疗率比下段输尿管结石高。eswl前注重病例筛选可降低再治疗率。
-
The association rules of the traditional data mining technique are used to mining higher appearance frequency and support for itemsets. If the association rules are applied to mining the outbreak symptom of excrescent disease, the support of partly outbreak symptom not high will be ridded during the mining process. The reason is that the number of excrescent disease patients is less than the number of ordinary patients. In addition, the outbreak symptom of excrescent disease may have the successively order of time happened, for example, symptom B will just take place sometime of interval later after symptom A. The data mining techniques that generally direct against the higher appearance frequency itemsets and only consider the single dimensional sequential pattern cannot totally search the pattern of outbreak symptom of excrescent disease, and cannot also provide related reference information to prescribe medicine for nursing staff at that time.
由於传统资料探勘技术中之关联规则是用来针对资料集合中出现频率较高亦是支持度高之项目集合进行探勘,若是应用於异常疾病发病徵状样式之探勘,由於异常疾病病患人数不及於普通疾病病患人数之缘故,因而造成部份发病徵状之支持度不高,将会在探勘过程中被去除,另外这类异常疾病之发病徵状可能会有先后发生时间之顺序,例如症状A发生后间隔一段时间后才会发生症状B,所以一般针对高频项目集合且只考虑到单一顺序维度之资料探勘技术,并无法完全找寻出这类异常疾病发病徵状之样式,也就无法在第一时间内提供医护人员对症下药之相关参考资讯。
-
We also found that the higher the frequency of aspirations performed, the higher was the adequacy rate of aspirated smears. Moreover, the greater the number of slides prepared by aspirators, the higher was the smear adequacy rate.
我们也发现穿刺者执行细针穿刺的频率愈高,所获得的抹片的充足性愈高,且发现穿刺者采取的片数愈多,所抽取的抹片充足性也愈高。
-
According to the specificity and sensitivity after different high-pass filters.
根据不同高通滤波频率后VLP各参数的敏感性及特异性的研究,表明40Hz高通滤波后其敏感性(66%)、特异性(96%)相对较高。
- 推荐网络例句
-
She gently rebuff ed him, but agreed that they could be friends
她婉言拒绝了,但同意作为朋友相处。
-
If in the penal farm, you were sure to be criticized.
要是在劳改农场,你等着挨绳子吧!
-
Several theories about reigniting and extinguishing of the arc have been refered.
本文综合考虑了几种电弧重燃和熄灭理论。