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time
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  “time”译为未确定词的双语例句
    A Comparative Study on Gastric Emptying Time by Gastric Magnetic Tracer Method and Scintigraphy
    胃磁示踪法与闪烁显像测定胃排空时间的比较研究
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    A COMPARATIVE STUDY ON THERAPEUTIC RESPONSE AND SURVIVAL TIME OF PATIENTS WITH MULTIPLE MYELOMA TREATED WITH MODIFIED VMCP REGIMEN
    A COMPARATIVE STUDY ON THERAPEUTIC RESPONSE AND SURVIVAL TIME OF PATIENTS WITH MULTIPLE MYELOMA TREATED WITH MODIFIED VMCP RE
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    THE TIME ORDER OF EXPRESSION OF p53 AND bcl-2 GENES IN THE APOPTOTIC PROCESS OF HUMAN BREAST CANCER CELL LINE MCF-7
    人乳腺癌MCF-7细胞凋亡过程中p53与bcl-2表达的时序性
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    【Objective】To investigate the cyclooxygenase-2 protein expression and clinical significance in human laryngeal squamous cell carcinoma,at the same time,to investigate its expression in human laryngeal papilloma and vocal cord polyps.
    【目的】探讨环氧合酶-2(COX-2)蛋白在喉癌中的表达及其临床意义,同时探讨其在喉乳头状瘤和声带息肉中的表达情况。
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    Results All the patients recovered uneventful except 2 deaths,and they survived and were followed up for a mean time of 16 months(range 1~4 years).
    结果22例患者手术顺利并康复出院,随访1-4 a,平均16个月,2例死亡,其余均生存.
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  time
The proof is based on a variant of Moser's method using time-dependent vector fields.
      
We present two-sided singular value estimates for a class of convolution-product operators related to time-frequency localization.
      
The Balian-Low theorem (BLT) is a key result in time-frequency analysis, originally stated by Balian and, independently, by Low, as: If a Gabor system $\{e^{2\pi imbt} \, g(t-na)\}_{m,n \in \mbox{\bf Z}}$
      
Gabor Time-Frequency Lattices and the Wexler-Raz Identity
      
Gabor time-frequency lattices are sets of functions of the form $g_{m \alpha , n \beta} (t) =e^{-2 \pi i \alpha m t}g(t-n \beta)$ generated from a given function $g(t)$ by discrete translations in time and frequency.
      
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(1) A comparative study has been made on the induction of tryptophan pyrrolase by substrate and corticoids in liver tumor and the precancerous liver induced by 3'-MeDAB.(2) The liver tumor, contrary to normal liver, was inactive in response to both tryptophan and hydrocortisone for the induction of tryptophan pyrrolase, while the tissue adjacent to the tumor was active with respect to both substrate and hormonal induction.(3) A decrease in both substrate and hormonal induction was observed in the precancerous...

(1) A comparative study has been made on the induction of tryptophan pyrrolase by substrate and corticoids in liver tumor and the precancerous liver induced by 3'-MeDAB.(2) The liver tumor, contrary to normal liver, was inactive in response to both tryptophan and hydrocortisone for the induction of tryptophan pyrrolase, while the tissue adjacent to the tumor was active with respect to both substrate and hormonal induction.(3) A decrease in both substrate and hormonal induction was observed in the precancerous liver developed by feeding 3'-MeDAB for different time intervals. In experiments by injecting intraperitoneally the carcinogen into animals,for 25 hours, similar results were obtained as in the feeding experiments.(4) 2-MeDAB, a non-carcinogenic substance, caused the same effect on the induction of tryptophan pyrrolase in every case as did 3'-MeDAB. It thus appears that the effect of 3'-MeDAB on the enzyme induction may not be specific.(5) No inhibitors of tryptophan pyrrolase or activators of kynureninase were found in the cell sap of liver tumor and the liver of rats fed 3'-MeDAB or 2-MeDAB in the course of induction.(6) The cell sap from liver tumor (non-induced) contained only a small amount of enzyme protein, as shown by the fact that the enzyme activity being only slightly increased by the addition of either normal microsome or hematin, of which the level has not elevated by the administration of tryptophan or hydrocortisone.(7) Similar experiments have shown that the cell sap from the substrate and hormonal induced liver in the precancerous stage contained a decreased amount of enzyme protein as compared to that of the control. The same was true of the rats fed 2-MeDAB.(8) Microsomes from liver tumor have lost almost completely the ability of activating tryptophan pyrrolase in the cell sap. The ability of activation due to microsomes from the precancerous liver was remarkably reduced, though not yet completely lost, while the microsomes from the liver of rats fed 2-MeDAB were normal. It was in this respect that the effect of non-carcinogen (2-MeDAB) was found to be different from that of the carcinogen (3'-MeDAB).(9) From the results presented, it was concluded that the default of tryptophan pyrrolase induction observed in the liver tumor and the precancerous liver was mainly due to an inadequate amount of apoenzyme, rather than a deficiency of co-factor (hematin) or an increment of protein other than the enzyme. The possible cause of these effects was briefly discussed.

本文对大鼠肝癌及癌前期肝内TP的底物诱导和激素诱导作了比较研究。在3′-MeDAB诱发的肝癌中,TP活性很低,且不因注射色氨酸或氢可地松而升高,而癌周组织则仍保留对底物和激素诱导的能力。喂3′-MeDAB 13天、28天、90天大鼠肝内TP的底物诱导效应都较对照组为低。急性注射3′-MeDAB25小时,以100毫克/100克体重的L-色氨酸进行诱导,TP的诱导效应亦较对照组为低。氢可地松诱导的结果与底物诱导的相似,无论在喂或急性注射3′-MeDAB的情况下,TP的诱导效应都受到抑制。但在相同条件下,非致癌物,2-MeDAB,对TP的底物诱导和激素诱导(慢性的或急性的实验)也有相似的作用。诱导后肝癌组织或喂偶氮染料的肝组织中都未发现有TP的抑制物或狗尿酸酶的激活物。微粒体及正铁血红素与上清液的加合实验表明:(1)肝癌微粒体几乎完全不具有激活TP的活力;癌前期(3′-MeDAB组)肝微粒体已部分失去此种生化功能,但2-MeDAB组微粒体则否。3′-MeDAB对肝微粒体中辅助因子(正铁血红素)的结构并无破坏,而可能使辅助因子的含量减少。(2)微粒体对激活上清液TP的效果较自由的正铁血红素差,即使加入过量微粒体亦不能...

本文对大鼠肝癌及癌前期肝内TP的底物诱导和激素诱导作了比较研究。在3′-MeDAB诱发的肝癌中,TP活性很低,且不因注射色氨酸或氢可地松而升高,而癌周组织则仍保留对底物和激素诱导的能力。喂3′-MeDAB 13天、28天、90天大鼠肝内TP的底物诱导效应都较对照组为低。急性注射3′-MeDAB25小时,以100毫克/100克体重的L-色氨酸进行诱导,TP的诱导效应亦较对照组为低。氢可地松诱导的结果与底物诱导的相似,无论在喂或急性注射3′-MeDAB的情况下,TP的诱导效应都受到抑制。但在相同条件下,非致癌物,2-MeDAB,对TP的底物诱导和激素诱导(慢性的或急性的实验)也有相似的作用。诱导后肝癌组织或喂偶氮染料的肝组织中都未发现有TP的抑制物或狗尿酸酶的激活物。微粒体及正铁血红素与上清液的加合实验表明:(1)肝癌微粒体几乎完全不具有激活TP的活力;癌前期(3′-MeDAB组)肝微粒体已部分失去此种生化功能,但2-MeDAB组微粒体则否。3′-MeDAB对肝微粒体中辅助因子(正铁血红素)的结构并无破坏,而可能使辅助因子的含量减少。(2)微粒体对激活上清液TP的效果较自由的正铁血红素差,即使加入过量微粒体亦不能使TP活性增高到加入正铁血红素的水平;微粒体对3′-MeDAB组上清液的激活不如对2-MeDAB组及对照组上清液(底物或激素诱导)的激活显著,而正铁血红素对三组上清液都有显著激活。(3)肝癌细胞上清液只合有极少量的TP蛋白,且不因注射色氨酸或氢可地松而增加;癌前期肝细胞上清液的TP蛋白因底物或激素诱导而增加的量都较对照粗低。2-MeDAB组也有相似现象。以上结果表明,肝癌及癌前期肝内TP诱导的受损,主要是由于诱导后TP蛋白的缺少,而不是由于辅助因子(如正铁血红素)的不足,或非酶蛋白的增多。

The change in activity of ornithine carbamyl transferase (OCT) in the liver of rats administered with carbon tetrachloride and 3'-methyl-4-dimethyl-aminoazobenzene (3'-Me-DAB) was investigated.The activity of OCT of the animals poisoned with carbon tetrachloride or fed with 3'-Me-DAB was found to be greatly reduced as compared with those of the control rats. In the former case, the activity was reduced 17% and in the latter, 35%. The combined effect of carbon tetrachloride and 3'-Me-DAB on the activity of the...

The change in activity of ornithine carbamyl transferase (OCT) in the liver of rats administered with carbon tetrachloride and 3'-methyl-4-dimethyl-aminoazobenzene (3'-Me-DAB) was investigated.The activity of OCT of the animals poisoned with carbon tetrachloride or fed with 3'-Me-DAB was found to be greatly reduced as compared with those of the control rats. In the former case, the activity was reduced 17% and in the latter, 35%. The combined effect of carbon tetrachloride and 3'-Me-DAB on the activity of the enzyme was found to be the most pronounced, with an activity scarcely 52% of that of the control. The OCT activity of the azo dye-fed rats showed a tendency to come back some time after administration of the drug was discontinued.The mechanism by which 3'-Me-DAB affected liver OCT activity is discussed.

(1)本文报导大白鼠经四氯化碳中毒及用3′-甲基-4-二甲基氨基偶氮苯诱发肝癌过程中肝脏鸟氨酸氨基甲酰移换酶活力的变化。(2)四氯化碳中毒及摄食3′-Me-DAB大白鼠,均可导致动物肝脏的OCT活力显著降低,后者比前者的影响更为显著,而两者的综合处理又比单独使用四氯化碳或3′-Me-DAB为显著。(3)停止摄取3′-Me-DAB后,酶的活力似有恢复上升的趋势。(4)对3′-Me-DAB引起动物肝脏OCT活力降低的机制作了讨论。

In the present paper some factors affecting the superinduction of interferon in diploid cells were studied. The results showed that the titer of interferon superinduced in fetal skin muscle cell cultures was significantly higher than those in fetal human lung cell cultures. Cells treated with Astragalus membranaceus produced more interferon. Poly I:C and cycloheximide could be present simulstaneouly in the cell cultures during the whole course of superinduction. However, the duration of treatment with inhibitors...

In the present paper some factors affecting the superinduction of interferon in diploid cells were studied. The results showed that the titer of interferon superinduced in fetal skin muscle cell cultures was significantly higher than those in fetal human lung cell cultures. Cells treated with Astragalus membranaceus produced more interferon. Poly I:C and cycloheximide could be present simulstaneouly in the cell cultures during the whole course of superinduction. However, the duration of treatment with inhibitors of nucleic acid synthesis ( mithramycin and actinomy-cin D ) should not exceed one hour before the termination of superinduction. The. behaviour of superinduction by mithramycin was similar to that by actinomycin D The optimal time for combined poly I : C and cycloheximide treatment was about 9 hours. Under our experimental conditions, the interferon yield in the superinduction system was increased by 170-248 fold as compared with similar system without superinduction. The present paper describes a procedure for the large scale production of fibroblast interferon.

本文在人二倍体细胞培养上就影响干扰素超诱导的某些因素进行了研究。结果表明:人肌皮二倍体细胞株的干扰素超诱导能力高于人肺二倍体细胞株。黄芪处理细胞在超诱导系统中可以生产较高量的干扰素。聚I:C和环已亚胺能在超诱导的整个过程持续存在,但放线菌素D和光辉霉素则在超诱导终止前作用1小时最适宜。光辉霉素与放线菌素D有相似的干扰素超诱导作用。聚I:C与环已亚胺的适宜作用时间为7~9小时。在适宜条件下,干扰素的产量在超诱导系统中比单诱导增加170~248倍。本研究可为大量生产纤维细胞干扰素及提取干扰素mRNA提供依据,并为阐明干扰素超诱导机理提供基础。

 
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