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     A palynofloral sequence for the Cretaceous of the Jiangsu area is established in the present paper based on the newly found spores and pollen from subsurface and the previous data. The assemblages and pollen bearing strata are listed as follows:1) Berriasian Valanginian Schizaeoisporites Classopollis annulatus Ginkgocycadophytus nitidus Assemblage of the Yunheshan Formation;
     根据近年来获得的孢粉化石材料和前人资料 ,建立了江苏白垩纪的孢粉组合序列 ,它们是 :  1)贝里阿斯期至凡兰吟期 (Berriasian— Valanginian)的 Schizaeoisporites- Classopollis annulatus- Ginkgocycadophytus nitidus组合 (云合山组 ) ;
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     The present paper makes an approach to the methodology of soil erosion mapping in the region lack of field observations by the use of TM satellite images and topographic map in combination with soil erosion type and intensity, correlation of vegetation cover rate with slope established by previous data and field typical investigation.
     探讨在缺少实测和调查土壤侵蚀模数资料的地区 ,应用TM卫星图像和地形图 ,结合前人资料和野外典型调查 ,建立水土流失类型、强度与土地利用类型、植被覆盖度和地形坡度的相关关系 ,经遥感综合解译 ,编制水土流失现状图的技术方法。
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     This paper deals with characteristics of the Devonian depositional system in south Guizhou-central Guangxi in terms of rock association,depositional fabric,profile series,biocoenoses,sedimentary mechanism and on the basis of detailed field study and previous data.
     以详细的野外调查和前人资料为基础,对岩石组合、沉积组构、剖面序列、生物组合、沉积机理等进行分析,研究了黔南—桂中地区泥盆系沉积体系特征。
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     On the basis of previous data,this paper applies the theory of minerogenetic series of ore deposits to the summarizafion of metallogeny, to the division of minerogenetic series of ore de-posits and to the establishment of a regional metallogenic model in the western margin of Kangdian Axis, pointing out prospecting targets of major types of deposits.
     本文在前人资料的基础上应用成矿系列理论,对康滇地轴西缘成矿规律进行了归纳和总结,初步划分出矿床成矿系列并建立了区域成矿模式,指出今后找矿的主攻类型。
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     Based on previous data, this paper sums up the reflection texture and the variety of amplitude of the river sandstone body in a dip seismic section.
     在参考前人资料的基础上,总结了在横切河道的地震剖面上河道砂岩体的反射形态、结构及振幅变化。
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     Based on this age, combined with previous data, the authors believe that the Jinshajiang ocean basin closed at 266 Ma and that the collision stage took place at 266-214 Ma.
     结合前人的资料,认为金沙江洋盆闭合、板块碰撞的时间应为266Ma,碰撞阶段的年龄范围为266~215Ma。
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     This paper,combined with previous data,briefly summarizes the results of isotopic studies of these deposits.
     本文结合前人的资料,对这些矿床的同位素研究成果作一概括性总结。
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     Fission track ages (FTA) of 4 apatite samples collected from Langkazi to Yarlung Zangbo thrust zone range between 13.6 and 17.2 Ma, reflecting the time of continent-continent collision and differing from previous data.
     从浪卡子至雅鲁藏布江逆冲带剖面中获得的 4个磷灰石裂变径迹年龄为 13.6— 17.2Ma ,记录了区内陆 -陆碰撞的时代 ,而这恰恰有别于前人的资料
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     Quartz diorite in the Koumenzi area, Karlik Mountains, which was originally assigned to the Carboniferous, has a zircon SHRIMP U-Pb age of 429.6±6.2 Ma and its country rocks were originally assigned to the Middle Devonian. According to 1∶50000 regional geological survey and previous data, the age is redefined as Ordovician.
     哈尔里克山口门子一带原划石炭纪石英闪长岩的锆石SHRIMPU-Pb年龄为429.6Ma±6.2Ma,其围岩原被置于下中泥盆统,根据1∶5万区域地质调查和前人的资料,将其重新厘定为奥陶系。
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     Compared with the previous data from 1984 to 1986, the TG levels increased significantly (0.47 mmol/L in males and 0.3 mmol/L in females) and the HDL-C levels decreased significantly (0.07 mmol/L in males and 0.05 mmol/L in females); however, the TC and the LDL-C levels remained unchanged.
     与20年前相关研究结果比较,男女TC高0.09mmol/L及0.11mmol/L,TG增高明显,男女分别为0.47mmol/L和0.3mmol/L,LDL-C差异无显著性,HDL-C下降0.07mmol/L(男)和0.05mmol/L(女)。
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     Previous data have demonstrated that mesenchymal stem cells (MSC) support in vitro hematopoiesis and promote the engraftment of HSC to bone morrow and spleen as well.
     骨髓间充质干细胞(mesenchymal stem cells,MSC)体外具有造血支持作用,与CD34~+细胞共输入受者体内可以促进HSC向骨髓、脾等造血部位的植入。
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     Our previous data showed that the VP22 of the attenuated MDV-1 strain CVI988/Rispens had a deletion of 201TKSERT206 compared to that of the oncogenic GA strain and other virulent strains.
     1不同致病型马立克氏病病毒VP22蛋白的序列比较和分析用MDV-1 CVI988/Rispens株、GA株、RB1B株和648A株,MDV-2 Z4株和FC126株分别感染鸭胚成纤维细胞或鸡胚成纤维细胞,待出现大量空斑时,提取总DNA。
短句来源
     Conclusions:The MED of narrow-band UVB in this study is close to the previous data, 600~800mJ/cm2, according to the overseas reports.
     结论:南京地区窄谱中波紫外线MED值接近国外报道的600~800mJ/cm2。
短句来源
     The nitrogen pollution was monitored in Luoma Lake during the 1997-2003.Based on the results and in combination with the previous data,the characteristics and variations of main pollutant concentrations were analyzed in different years,seasons and the sections of Luoma Lake.
     通过对骆马湖1997—2003年的水质监测,分析了骆马湖水体的主要污染物在不同湖区、不同水期、不同年际的时空变化规律,结果显示,骆马湖戴场湖区水质明显劣于其它湖区,骆马湖主要污染物在丰水期明显高于平、枯水期,骆马湖1997—2003年主要污染物浓度变化不十分明显。
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The cellular basis of liver growth is reviewed from overall recent and previous data.
      
This agrees with the previous data on the enzyme localized at the outer side of the properly oriented vesicles in the microsomal fraction of plasmalemma.
      
According to the immune status indices and our previous data on behavioral, biochemical, and morphological changes induced in bulbectomized mice, they have common symptoms with the Alzheimer's disease.
      
The results of multiple alignments during structural analysis of the 40 GAD confirmed and extended our previous data on conserved residues that arrange the position of the coenzyme (PLP) in the enzyme active center.
      
The results obtained are compared with the previous data.
      
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The investigation reported here was undertaken to obtain informations concerning the relative merits of the direct and indirect exposure of testis to X-irradiation on the chromosome aberrations in the spermatogenesis of the monkey, Macaca mulatta. The materials used consisted of 8 adult male monkeys, which were set into 4 groups with 2 animals each as follows: in the first group, the 2 testes of same animal were taken out at two separate operations with 10 days apart. They were intended to serve as controls...

The investigation reported here was undertaken to obtain informations concerning the relative merits of the direct and indirect exposure of testis to X-irradiation on the chromosome aberrations in the spermatogenesis of the monkey, Macaca mulatta. The materials used consisted of 8 adult male monkeys, which were set into 4 groups with 2 animals each as follows: in the first group, the 2 testes of same animal were taken out at two separate operations with 10 days apart. They were intended to serve as controls as well as to find out whether precastration of one testis would affect the frequency of chromosome aberrations in the retained testis. In the second, 10 days after the precastration of the left testis, the animals were exposed to 200r X-irradiation with right testis unshielded. In the third, 10 days after the precastration of left testis, the animals were exposed to 200r X-irradiation with right testis shielded by a 6 mm thick lead housing. In the fourth, animals were exposed to 200r X-irradiation, with right testis shielded and left testis unshielded. At the time of exposure, testes were all pushed backed from the scrotum into the abdominal cavity to receive X-ray treatment, and the irradiated testes were all taken out 10 days after exposure.Statistical analysis of the frequencies of chromosome aberrations obtained here together with our previous data (Chang, Chao, Tan and Liu 1963) shows while either whole body or local testicular region exposure to 200r X-irradiation produces similar effects on the increase of the frequencies of chromosome aberrations, the result with the shielded testis is essentially the same as the controls. This suggests that chromosome aberrations induced by X-irradiation are resulted from the direct effect of X-rays on the chromosomes and the protective function of lead housing renders the testis to prevent from radiation injury to the chromosomes. The data further show that precastration of one testis could hardly affect the frequencies of chromosome aberrations in the other testis retained in the same animal. Hence, it is safe to use 2 testes of a same animal, one for control and the other for experimental purpose, or both for treatment but with ditferent dosages. This information is of special value in the design of experiments to eliminate possible errors due to individual differences, especially when the number of such experimental animal as monkey could not often be very large.

本文用的8只性成熟雄性猕猴(Macaca mulatta)分成4组,每组二只猴子,分组处理如下:(1)一个个体的二个睾丸分别经二次外科手术阉取,前后手术相隔10天,用作对照材料并验证先阉割一个睾丸对剩留体腔的另一个睾丸的染色体畸变有无影响;(2)左睾阉割10天后,全身照射200仑;(3)左睾阉割10天后,在右睾用6毫米厚的铅室屏蔽的条件下全身照射200仑;(4)在右睾用6毫米厚铅室屏蔽,而左睾直接接受射线的条件下全身照射200仑.照射后第10天取出睾丸,以细胞学方法观察生殖细胞的染色体畸变,并进行变量分析和t测验,将这些数据连同我们过去局部地直接照射睾丸所得的资料一并考察,旨在探讨直接与间接照射的辐射细胞遗传学效应.根据分析结果,可得出如下结论:(1)全身照射与局部照射睾丸对于增高染色体畸变率的效应是相同的,而全身照射时保护睾丸则与对照组没有差别,所以辐射诱发染色体畸变是射线直接作用于染色体的结果,与间接作用是无关的.(2)证明铅室遮盖睾丸对诱发染色体畸变有保护作用.(3)同一个体的二个睾丸先取出一个,对留于体内的另一个睾丸的染色体畸变并无影响.所以一个睾丸作对照,另一个睾丸作处理,或二个睾丸分别作不同处理,...

本文用的8只性成熟雄性猕猴(Macaca mulatta)分成4组,每组二只猴子,分组处理如下:(1)一个个体的二个睾丸分别经二次外科手术阉取,前后手术相隔10天,用作对照材料并验证先阉割一个睾丸对剩留体腔的另一个睾丸的染色体畸变有无影响;(2)左睾阉割10天后,全身照射200仑;(3)左睾阉割10天后,在右睾用6毫米厚的铅室屏蔽的条件下全身照射200仑;(4)在右睾用6毫米厚铅室屏蔽,而左睾直接接受射线的条件下全身照射200仑.照射后第10天取出睾丸,以细胞学方法观察生殖细胞的染色体畸变,并进行变量分析和t测验,将这些数据连同我们过去局部地直接照射睾丸所得的资料一并考察,旨在探讨直接与间接照射的辐射细胞遗传学效应.根据分析结果,可得出如下结论:(1)全身照射与局部照射睾丸对于增高染色体畸变率的效应是相同的,而全身照射时保护睾丸则与对照组没有差别,所以辐射诱发染色体畸变是射线直接作用于染色体的结果,与间接作用是无关的.(2)证明铅室遮盖睾丸对诱发染色体畸变有保护作用.(3)同一个体的二个睾丸先取出一个,对留于体内的另一个睾丸的染色体畸变并无影响.所以一个睾丸作对照,另一个睾丸作处理,或二个睾丸分别作不同处理,这种同体对照的方法是可行的,可以在供试个体不多的情况下既满足实验设计要求又减少了个体差异所可能造成的误差.

Differential thresholds of loudness (△I/I) were determined on 5 subjects for different signal durations (t) by both the signal comparison method and the method of beat perception.△I/I obtained by the first method did not seem to change with the change of signal duration (△I/I=K), whereas △I/I obtained by the second method varied systematically: when t was shorter than some critical duration T, △I/I were inversely proportional to the square root of t, i.e. △I/I=K'(T/t)2/2; when t was longer than T, △I/I became...

Differential thresholds of loudness (△I/I) were determined on 5 subjects for different signal durations (t) by both the signal comparison method and the method of beat perception.△I/I obtained by the first method did not seem to change with the change of signal duration (△I/I=K), whereas △I/I obtained by the second method varied systematically: when t was shorter than some critical duration T, △I/I were inversely proportional to the square root of t, i.e. △I/I=K'(T/t)2/2; when t was longer than T, △I/I became constant, i.e. △I/I=K'. T was about 150 msec. The results were compared with the previous data dealing with the role of signal duration in pitch differentiation.

本工作用两种方法研究了声音的响度辨别阈(△I/I)与信号时程(t)的关系.用信号比较法测得的△I/I不受t的长短的影响,即△I/I=K.用拍感受法测得的结果却有所不同:当t短于极限时间T时,△I/I与t的平方根成反比,即△I/I=K'(T/t)~(1/2);当t长于T时,△I/I趋于恒定,即△I/I=K';T约为150毫秒.用拍感受法测得的响度辨别阈与信号时程的关系,和以前测得的音调辨别阈与信号时程的关系十分相象.

A program LYCT which can generate an exhaustive, nonredundant list of all the acyclic structural isomers of a given empirical formula has been completed. It can also prune these isomers by means of feeding the program with “BADLIST” and “GOODLIST”. The numbers of isomers of some compounds resulted from LYCT are however, inconsistent with previous data[1.9], The differences are discussed to demonstrate the validity of this program. An example illustrating the use of LYCT is presented.

完成了一个计算机程序LYCT,可对给定的分子式列出全部链状异构体,并按给定的好结构和坏结构进行挑选。用本程序得出了一系列化合物的链状异构体总数,和已有的相似程序的结果并不相同,故讨论了其差别以证明本程序结果的正确性。最后用一个例子说明如何应用本程序辅助进行结构解析。

 
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