自然率

诺贝尔经济学奖获得者埃德蒙菲尔普斯（edmundphelps）认为，目前，中期的美国失业“自然率”（推高通胀的高需求之下）在7.5%左右，比几年前显著更高。

Edmund Phelps , a Nobel Prize-winning economist , thinks that in America the " natural rate " of unemployment ( below which higher demand would push up inflation ) in the medium term is now around 7.5 % , significantly higher than only a few years ago .

在他于1994年出版的《结构性低迷》一书中，他雄心勃勃的试图给出一个自然率失业是如何演化的一般理论。

His book " Structural Slumps ", published in1994 , is an ambitious attempt to provide a general theory of how the natural rate of unemployment evolves .

而慢性HBsAg携带者自然转阴率极低。

But the natural negative converse rate of chronic HBsAg carriers is very low .

模型和模型加治疗组喂饲致石饲料30天，使金黄地鼠胆石症由其自然发生率50%提高到100%（P＜0.05）。

After 30 day , the natural formation rate of gallstone rose to 50 % ( contral group ), while model group , the formation rate was 100 % .

12h的自然沉降率达到61%；

The natural sedimentation rate of 12h reached 61 % ;

HBsAg有一定的自然转阴率，我国约06%～66%。

Some patients can clear HBsAg naturally , and the clearance rate of HBsAg is 0.6 ~ 6.6 % in China .

用自然增长率、线性回归和灰色GM（1,1）预测三种模型对土地利用结构优化多目标模型参数进行预测；

Furthermore , those methods such as natural growth rate , linear regression and grey GM ( 1,1 ) were employed to predict parameters relevant to the model .

转Bt基因不育系昆虫自然授粉率比常规不育系大幅提高。

For open entomophilous pollination percentage of Bt transgenic sterile lines was higher than that of general one , their seed yield before frost increased significantly .

根据2000～2002年的调查研究，该蜂自然寄生率平均为16.8%.在自然条件下，成蜂的寿命为1～3d，平均2.2d；

Under the natural conditions of Zhejiang , its average rate of parasitism was about 16.8 % from 2000 to 2002 . The lifespan of adults was 1-3 d , with an average of 2.2 d .

结果表明，湖北麻鸭DHBV自然携带率为10%；

The results showed that the natural infection rate of DHBV in Hubei was 10 % .

结果（1）男婴早产率、自然早产率分别为3.25%（115例）、2.43%（86例）均显著高于女婴组的2.40%（83例）、1.73%（60例），P均<0.05。

Results : ( 1 ) The preterm birth rate and the spontaneous preterm birth rate in male were higher than in female ( 3.25 % vs 2.40 % , 2.43 % vs 1.73 % , P < 0.05 , respectively ) .

目的：WHV／myc转基因小鼠其肝脏肿瘤的自然发生率很高，本研究旨在细胞水平探测WHV／myc转基因小鼠肝癌发生过程中。

WHV / myc transgenic mice develop liver tumors spontaneously at a high frequency .

结果表明：所调查的枣树均有VA菌根菌侵染，但VA菌根的自然侵染率因立地条件、树龄、品种不同而异。

The results showed that VAM fungi were present on all the trees but the percentage infection varied with locality , variety and the age of the trees .

对豫南茶园VA菌根真菌形态、种类、种群频度、孢子密度及自然侵染率进行观察与测定。

The morphology , species frequency , spore density and natural infection rate of the VAM fungi in tea gardens were studied in the southern parts of Henan province .

。结果表明：（1）重庆地区2～3日龄麻鸭DHBV自然感染率为25.48%。

The following results were obstained : ( 1 ) The natural infected rate of 2-3 month-old ducks is 25 . 48 % .

本组患者自然妊娠率为1.92%，正常自然妊娠率为0。3例患者行IVF-ET，2例妊娠；

In our study the natural conception rate was 1.92 % , normal natural conception rate was 0.In three cases undergoing IVF-ET , 2 conceived , 1 failed .

用本法对68份样品进行了分析，AFB1自然污染率为11.8%，其中采自江苏某地的玉米样品污染AFB1最高达682.7μg／kg。

11.8 % of the 68 samples were positive for AFB 1 . The corn samples collected from some county were contaminated AFB 1 seriously at a maximum level of 682.7 μ g / kg .

F1代花粉可育率均高达93%以上，结实性好，自然结实率62.34%~68.75%，杂交组合间差异不明显；

The pollen fertility rate of F_1 hybrids were higher and above 93 % , the seed set were high ranging from 62.34 % to 68.75 % , and there were no differences among cross combinations ;

B组：34例患者TMX加CC治疗。结果：A组的妊娠明显高于B组（P<0.05），两组的排卵率、自然流产率比较无显著性差异（P>0.05）。

Results : The pregnant rate in group A was significantly higher than that in group B ( P < 0.05 ), there were no significant difference in ovulatory rate and spontaneous abortion rate between two groups ( P > 0.05 ) .

本文报道了水稻花药培养的绿苗自然加倍率，以抽穗期、株高、穗长三个农艺性状为指标，估算了花培再生绿苗（H1）群体的育种利用率。

This paper reports the natural doubling rate of green plants derived from rice anthers , and based on three agronomic traits ( heading date , plant height and panicle length ), the breeding utilization rate of regenerated green plants ( H_1 ) derived from anther culture was estimated .

本文基于可变参数的假设，构建包含自然失业率变动过程和菲利普斯曲线关系的状态空间模型，应用Kalman滤波方法，估算出了1992&2004年随时间变动的自然失业率曲线。

Our state-space model is constructed with a variable parameter hypothesis which contains the course of the natural rate of unemployment changes and the Phillips curve . The time-variant curve of the natural rate of unemployment during 1992 & 2004 is estimated with Kalman Filtering .

目的：为了解不同胎龄新生儿脑室内出血（IHV）自然发生率。

Objective : Intraventricular hemorrhage ( IVH ) is the major cause of neonatal mortality and morbidity .

新生儿组（包括足月和早产儿）脐血T细胞IL－2R自然表达率与血清sIL－2R水平呈直线负相关，而正常儿童组二者间呈直线正相关。

There were a negative correlation between nature expression rates of IL-2R on T cells and serum sIL-2R levels in fetal blood of full-term and premature infants , but there were a positive correlation in peripheral blood of normal children .

结果：本院近20年内HP和双胎妊娠的自然发生率分别约为1∶4000及1∶140次宫内妊娠（IUP）。

Results : The natural rate of HP and twin pregnancy ( TP ) in recent twenty years were approximately 1 ∶ 4 000 and 1 ∶ 140 intrauterine pregnancies ( IUP ) in our hospital , respectively .

结果两鸭场绿头鸭的DHBV自然携带率为360%（187/519），其95%可信限为310%～440%。

Results The average natural carrying rate of DHBV is 36.0 % ( 187 / 519 ) from two farms . 95 % confidence interval of the tested blood sample is within the range of 31.0 % - 44.0 % .

本文利用HPMV滤波对我国的自然失业率进行估计，并且应用自然失业率对我国通货膨胀的特征进行分析。

In this paper , we use HPMV filter to estimate NAIRU , and make use of it to analyze the characteristics of the inflation in China .

结果大型蒸汽消毒器消毒温度为105℃，持续5min，对布片载体上金黄色葡萄球菌、大肠埃希菌、白色念珠菌杀灭率达100%，对床单位表面的自然杀灭率>99.28%。

RESULTS Operating the disinfector at the 105 ℃ for 5 minutes , its killing rate of Staphylococcus aureus , Escherichia coli and Candida albicans on bedclothes was 100 % , the natural killing rate of ( surface ) of bedclothes exceeded 99.28 % .

根据意大利Adami等2002年的报告，PHPT患病率在55～75岁的妇女中为21／1000，在整个人群为3／1000。本病在我国较少见，自然发病率尚无确切数据。

Adami et al . reported the prevalence of PHPT in Italian women aged 55 ~ 75 and the whole population was 21 / 1000 and 3 / 1000 , respectively PHPT is not so common in China as in North America and no data of incidence is available .

空气消毒器启动120min，其周围空气中臭氧浓度平均值为0.02mg/m3。紫外线循环风空气消毒器开启120min，对空气中人工污染的白色葡萄球菌的平均杀灭率为99.93%，自然衰亡率平均为48.99%。

Operation of the Air Disinfector for 120 min produced ozone concentration 0.02 mg / m ~ 3 in air surrounding it and killed 99.93 % in average of Staphylococcus albus in artificially contaminated air , while the natural decay rate of the bacteria was 48.99 % in average .

自然流产率2·25%（4/178），其中3例自然流产后又妊娠足月分娩；

Spontaneous abortion rate was 2.25 % ( 4 / 178 );