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内暴露
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  internal exposure
     The TTCA content in urine can acts as a sensitive internal exposure parameter for Chinese workers exposed to CS 2 .
     尿TTCA含量可作为CS2 接触工人的一项敏感的内暴露指标。
短句来源
     Conclusions The level of TTCA in urine is a valid internal exposure parameter for the peripheral nervous function in Chinese workers exposed to carbon disulfide.
     结论 就周围神经系统功能而言 ,尿TTCA含量可作为我国CS2 接触工人的一项敏感的内暴露指标。
短句来源
     Urinary 1-hydroxyrene(1-OHP)as internal exposure of PAHs was also determined simultaneously by alkaline hydrolysis and HPLC.
     尿1羟基芘(1OHP)作为PAHs接触的内暴露标志,采用碱水解-高效液相色谱方法分析。
短句来源
     Urinary 1-hydroxyrene (1-OHP) as the internal exposure index of PAHs was determined by alkaline hydrolysis and high performance liquid chromatography.
     血清GST活力用试剂盒检测; 尿1-羟基芘(1-OHP)浓度作为多环芳烃内暴露剂量,用碱水解-高效液相色谱方法测定;
短句来源
  “内暴露”译为未确定词的双语例句
     Subjects in conditioning group were exposed to an octave band of noise(OBN) centered at 0.5kHz,95dB SPL,6 h per day for 10 days.
     适应组先在实验室内暴露于强度为95 dB SPL(声压级),中心频率为0.5 kHz的一个倍频程噪声,连续10 d,每天6 h;
短句来源
     Methods Adult rats were placed in an animal chamber (700 kPa air, 60 min) twice daily for 3 days.
     方法将大鼠置于动物加压舱内,暴露于700kPa压缩空气下60min,每天2次,连续3d。
短句来源
     Thirty male SD rats were randomly divided into five groups(0,1,3,5 and 7 d) and were exposed for 12 h per day at a simulating altitude of 7000±50 m in a hypobaric hypoxia chamber with 1 h's rest after 6 h's exposure.
     30只雄性SD大鼠随机分为5组:0、1、3、5、7 d组,每天在模拟7000±50 m高度的低压低氧舱内暴露12 h,连续暴露6 h后,休息1 h,再继续暴露6h。
短句来源
     Conclusion The established method for simultaneous detection of 2-hydroxynaphthalene, 2-hydoxyfluorene, 9-hydroxyphenanthrene, 1-hydroxypyrene, and 3-hydoxybenz[a]pyrene in human urine is sensitive, reproducible with high precision and good recoveries and suitable for the biomonitoring of PAH exposure.
     结论该方法可同时检测尿中2-羟基萘、2-羟基芴、9-羟基菲、1-羟基芘、3-羟基苯并(a)芘,灵敏度、精密度高,重复性、回收率良好,可用于PAHs在人体内暴露的生物监测。
短句来源
     Ten healthy volunteers were exposed to mixture of 22 kinds of volatile organic compounds with concentrations of zero to 10 mg/m 3 at the temperature of 18, 22 and 26 ℃, respectively in an artificial climate room for 60 minutes a day and six days week for two consecutive weeks to study their effects on human bodies.
     为研究有机化合物在不同室内空气温度条件下对人体健康的影响,作者选用10名健康自愿受试者,在人工气候室内暴露于22种混合有机化合物(0和10mg/m3浓度)与18、22和26℃温度复合因素环境中,每天60分钟,每周6次,连续2周。
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     Ganoderma.
     Ganoderma
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     It seems that not all the network magnetic flux is the remnant of active region magnetic flux.
     网络?
短句来源
     Hyperaemia was showed in sciatic nerve 2 hours after cold exposure and lasted nearly 7 days.
     结果表明:冷暴露后坐骨神经的微血管充血;
短句来源
     Group A is the best for the exposure of intrahepatic canal during operation.
     术中肝管道的暴露A组效果最佳。
短句来源
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  internal exposure
Internal exposure and its 5 pathways are also considered.
      
On the basis of the relationship between the external and internal exposure a BAT value of 1.5?mg/l has been set for the EthBz concentration in blood as the most sensitive and specific parameter of exposure to this aromatic hydrocarbon.
      
Elevated internal exposure of children in simulated acute inhalation of volatile organic compounds: effects of concentration and
      
The estimation of an expected number of the stochastic effects caused by the internal exposure to ionizing radiation from the administered radionuclides have been performed for the patients according to ICRP recommendations.
      
The applicability and consequences of this "Effective Dose Concept" are discussed especially with regard to the assessment of the maximum permissible intake of radionuclides into the human body and the combination of external and internal exposure.
      
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We studied the alteration in regional blood now in minipigs' femur under inadequate decompressionafter hyperbaric air exposure. The animals were placed in the hyperbaric chamber and exp0sed to the pressure of0. 5 MPa for 1. 5 h, which was reduced to atmosphere at an ascent rate of 0. 03-0. 04 MPa/min. Regional bloodflow in the femur was measured by the isotopes washout method of inhaling 133Xe. The radioactivity was moni-tored by a multifunctional blood flowmeter interfaced to a minicomputer. Before exposure,...

We studied the alteration in regional blood now in minipigs' femur under inadequate decompressionafter hyperbaric air exposure. The animals were placed in the hyperbaric chamber and exp0sed to the pressure of0. 5 MPa for 1. 5 h, which was reduced to atmosphere at an ascent rate of 0. 03-0. 04 MPa/min. Regional bloodflow in the femur was measured by the isotopes washout method of inhaling 133Xe. The radioactivity was moni-tored by a multifunctional blood flowmeter interfaced to a minicomputer. Before exposure, the values of averageblood flow (F) of femur on the left and right were 15. 4±1. 8 and 16. 9±2. 0 ml/100g· min respectively. The val-ues of blood now (f1) of hematopoietic marrow were 19. 1±2. 0 and 21. 31±2. 0 ml/100g·min(n=7). After inade-quate decompression, F values were reduced to 10. 3±1. 8 and 11. 1±1. 6 ml/100g· min and f1 values reduced to13. 9±1. 4 and 13. 8±1. 0ml/100g· min (n=7), which were obviously lower than those before exposure (P<0. 05). This experiment showed that significant reduction in blood flow in the femur region occurred under inade-quate decompression after the exposure of minipigs hyperbaric environment, suggesting that ischemia is a causativefactor of osteonecrosis-

本文研究了小型猪在高气压暴露不充分减压后股骨局部血流量的变化.动物在0.5MPa高厌空气舱内暴露1.5h,以0.03~004MPa/min匀速减压.骨血流量用吸入133Xe同位素清除法测定。结果为:暴露前平均骨血流量(F),左右侧分别为15.4±1.8和16.9±2.0ml/100g.min,造血骨髓组织血流量(f1)是19.1±2.0和21.3±2.1ml/100g·min(n=7).不充分减压后,F值降至10.3±1.8和11.1±1.6ml/100g·min,f1值降至13.9±1.4和13.8±1.0ml/100g·min,明显低于暴露前值(P<0.05).本研究表明:高气压暴露不充分减压可引起小型猪骨血流量降低.提示,骨供血不足是诱发减压性骨坏死的病因之一.

Objective The purpose of this study is for better understanding of pathological changes of CNS during various levels of hypobaric anoxia. Methods Twenty five Wistar rats were randomly devided into control group and 4 experimental groups( n =5). The experimental groups were separately exposed to 3 000 m, 5 000 m, 8 000 m and 10 000 m altitude in hypobaric chamber for 30 min. They were decapitated in the chamber, and tissue samples of parietal lobe of cortex were taken for electron microscopic examination....

Objective The purpose of this study is for better understanding of pathological changes of CNS during various levels of hypobaric anoxia. Methods Twenty five Wistar rats were randomly devided into control group and 4 experimental groups( n =5). The experimental groups were separately exposed to 3 000 m, 5 000 m, 8 000 m and 10 000 m altitude in hypobaric chamber for 30 min. They were decapitated in the chamber, and tissue samples of parietal lobe of cortex were taken for electron microscopic examination. Results Various degree of ultrastructural changes were found in all experimental groups. The structure of cell membrane of nerve cells, and gliocytes became indistinct, chondriosomes and endoplasmic reticulum in cytoplasm became dilated and edematous, Uneven coaceration of nuclear chromatin, and even pyknotic nucleus, cell fragments, apoptosis bodies, as well as edema of the collagen barrier of capillary outer membrane were also observed. The higher the altitude, the more prominant pathological changes were observed. Conclusion It is suggested that the ultramicroscopic pathological changes of parietal lobe of cortex during hypobaric anoxia are consistent with the changes of morphology and enzymic activity.

目的从亚细胞水平观察大白鼠在不同高度急性缺氧时大脑顶叶皮质组织的神经细胞、胶质细胞、间质血管等的病理改变。方法将雄性Wistar大鼠随机分成3000m、5000m、8000m及10000m实验组及对照组,于低压舱内暴露于不同高度30min,舱内处死,取大脑顶叶皮质层组织,常规电镜制片,透射电镜下观察。结果与对照组相比,不同高度实验组均呈不同程度变化,主要表现为脑组织神经细胞、胶质细胞膜结构模糊不清,核及胞质内线粒体、内质网扩张,核染色质不均匀凝固,细胞皱缩以至崩解,凋落小体出现,毛细血管外膜胶质屏障水肿等。病变以8000m及10000m两组明显。结论大鼠在不同高度急性缺氧时所发生的一系列超微病理学变化与组织形态学及酶活性变化一致,且表现得更明显,也是各种生理学紊乱、酶活性降低及组织学改变的基础

Objective To study the practical value of 2 thiothiazolidine 4 carboxylic acid(TTCA) in urine as an internal parameter in the occupational health surveillance of Chinese workers with exposure to carbon disulfide. Methods TTCA was determined in the urine of workers at the end of an 8 hour working shift by high performance liquid chromatography(HPLC),and the workers whose TTCA contents were below 5 mg/g creatinine were selected as study subjects.Nerve conduction velocity in common peroneal nerve and sural...

Objective To study the practical value of 2 thiothiazolidine 4 carboxylic acid(TTCA) in urine as an internal parameter in the occupational health surveillance of Chinese workers with exposure to carbon disulfide. Methods TTCA was determined in the urine of workers at the end of an 8 hour working shift by high performance liquid chromatography(HPLC),and the workers whose TTCA contents were below 5 mg/g creatinine were selected as study subjects.Nerve conduction velocity in common peroneal nerve and sural nerve and the minimum latency of F wave in common peroneal nerve were detected by routine methods.SAS software was used to confirm statistical difference by multiple linear regression. Results Comparison of exposed workers with controls by multiple linear regression revealed significant difference that the amplitude of the motor action potential decreased after distal and proximal stimulation( r =-1.098 5;-0.955 7) and the minimum latency of F wave prolonged in exposed battery( r =1.683 0). Conclusions The level of TTCA in urine is a valid internal exposure parameter for the peripheral nervous function in Chinese workers exposed to carbon disulfide.

目的 探讨尿中 2 硫代噻唑烷 4 羧酸 (TTCA)含量作为内暴露指标在我国二硫化碳 (CS2 )接触工人神经系统功能职业健康监护方面的实际应用价值。方法 应用高效液相色谱法测定工人 8h班末尿TTCA含量 ,选取尿中TTCA <5mg/gCr者作为研究对象 ;应用常规方法测定工人腓总神经和腓肠神经传导速度及腓总神经F波最短潜伏期 ;用SAS软件包进行多元回归统计分析。结果 暴露组与对照组比较 ,工人神经传导速度的相关指标存在组间差异 :暴露组运动神经远端及近端动作电位波幅降低 (偏回归系数分别为 - 1.0 985、- 0 .95 5 7) ,F波最短潜伏期延长 (偏回归系数为 1.6 830 )。结论 就周围神经系统功能而言 ,尿TTCA含量可作为我国CS2 接触工人的一项敏感的内暴露指标。

 
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