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胁迫时间
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  time stress
    Effects of Acid Rain on Seed Germination of Three Plants Under Time Stress
    酸雨对不同抗性植物种子萌发过程的影响Ⅱ——酸雨短程胁迫时间对植物种子4项萌发生理指标的影响
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  “胁迫时间”译为未确定词的双语例句
    Four simulated acid rain (SAR) solutions of pH 2.5, 3.0, 3.5 and 4.0 and (pH 6.5) as control group were used, rice, wheat and rape seeds as experimental materials in this study.
    采用pH 2.5、3.0、3.5、4.0酸雨处理3类抗性种子,研究酸雨胁迫时间对3类抗性种子萌发过程(发芽率、发芽势、发芽指数、活力指数)和生理指标(贮藏物质消耗率、贮藏物质运转率、根长抑制指数、芽长抑制指数)的影响。
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    The seeds were stressed 1d then have germinated in neutral solution for 6 days, express as 1AR+6W;
    酸雨胁迫时间的处理方式为:酸雨胁迫1d,转于CK溶液中至萌发实验结束,表示为 (1AR+6W);
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    Simulation research showed that correlations between output and total biomass towards O3 concentrations were well with prolong O3 exposure duration and recovery time shortened.
    数学模拟表明,O3胁迫时间越长、恢复时间越短油菜经济和生物产量与O3浓度相关越显著。
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    The toxicity on seedlings was in order of Cu~ 2+>Hg~ 2+>Cd~ 2+/Pb~ 2+,while on seeds was Hg~ 2+>Cd~ 2+>Pb~ 2+/Cu~ 2+. Seed germination rate was decreased with increasing stress duration,and different heavy metals showed different toxicity at different stress duration.
    结果表明,重金属对幼苗生长的毒性大于对种子发芽的毒性,以抑制种子发芽的IC50为指标,4种重金属的毒性顺序为Hg2+>Cd2+>Pb2+/Cu2+,以幼苗生长为指标,则毒性顺序为:Cu2+>Hg2+>Cd2+/Pb2+,并随着胁迫时间延长,种子萌发率下降.
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    The Cd~(2+) stimulated antioxidant enzymes: activity of SOD,POD and CAT increased by 0.10~2.18 times,0.35~2.24 times and 0.43~2.35 times,respectively.
    抗氧化酶类活性随着Cd2+浓度的增加和胁迫时间的延长而增加,超氧化物歧化酶(SOD)活性提高0.10~2.18倍,过氧化物酶(POD)活性提高0.35~2.24倍,过氧化氢酶(CAT)活性提高0.43~2.35倍。
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  time stress
Long time stress relaxation of a triblock copolymer with asymmetric composition
      
The long-time stress relaxation was examined for poly(styrene)-poly(ethylene- co-butylene)-polystyrene triblock copolymer with asymmetric composition in the microphase separated state.
      
Many elderly aides in home-care service are probably exposed at work to high risks of overexertion and impaired health as a result of high postural loads in combination with other known important factors, such as time stress and lack of equipment.
      
The influence of long-time stress relief treatments on the dynamic fracture toughness properties of ASME SA508 C1 2a and ASME SA
      
As a result, short time stress relaxation data have to be corrected in order to obtain reliable estimates of, for example, the modulus G(t) at times shorter than approximately ten times the ramp time.
      
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This paper reports the effect of monocrotophos stress on the activity of superoxide dismutase (SOD) and peroxidase (POD) which are two key enzymes to eliminate active oxygen in algal cell. Results showed that: 1. SOD activity on Platymonas sp. and Phaeodactylum tricornutum decreased under moncrotophos stress, and fluctuated irregularly in Dicrateria sp. during the whole period of stress; 2. POD activity of three marine microalgae decreased gradually with the prolonging time of stress. Therefore,...

This paper reports the effect of monocrotophos stress on the activity of superoxide dismutase (SOD) and peroxidase (POD) which are two key enzymes to eliminate active oxygen in algal cell. Results showed that: 1. SOD activity on Platymonas sp. and Phaeodactylum tricornutum decreased under moncrotophos stress, and fluctuated irregularly in Dicrateria sp. during the whole period of stress; 2. POD activity of three marine microalgae decreased gradually with the prolonging time of stress. Therefore, the mechanism to eliminate active oxygen is different in various marine microalgae. It is one of the main causes for activity decline of SOD and POD to lead to the excess production of active oxygen and cell damage of lipid peroxidation.

报道了久效磷对3种海洋微藻细胞内2种清除活性氧的关键性酶———超氧化物歧化酶和过氧化物酶活性的影响.结果显示:1在久效磷的胁迫下,扁藻和三角褐指藻细胞的超氧化物歧化酶(SOD)活性均表现出下降的总变化趋势,而叉鞭金藻细胞的SOD活性时而上升,时而下降,在整个胁迫过程中呈现出无规律性的变化.2随着久效磷胁迫时间的延长,3种微藻细胞的过氧化物酶活性均逐渐下降,表现出相同的变化规律性.这说明不同的藻种,久效磷对其细胞内酶活性的影响不尽相同.推测超氧化物歧化酶和过氧化物酶(POD)活性的降低是微藻细胞内过量产生活性氧,进而引起藻细胞膜脂过氧化伤害的主要原因之一.

The paper reports the effect of monocrotophos on superoxide dismutase (SOD) activity in the tissues of P. chinensis. The toxicity mechanism of monocrotophos on the shrimp was performed and discussed with the method of immunotoxicology.The rsults indicate that monocrotophos stress could decrease the SOD activity in the haemolymph, hepatopancreas, and muscle of the shrimp. And it is found that the hepatic SOD activity is the most sensitive to monocrotophos stress. So monocrotohpos could poison the shrimp possibly...

The paper reports the effect of monocrotophos on superoxide dismutase (SOD) activity in the tissues of P. chinensis. The toxicity mechanism of monocrotophos on the shrimp was performed and discussed with the method of immunotoxicology.The rsults indicate that monocrotophos stress could decrease the SOD activity in the haemolymph, hepatopancreas, and muscle of the shrimp. And it is found that the hepatic SOD activity is the most sensitive to monocrotophos stress. So monocrotohpos could poison the shrimp possibly by means of inducing free -adical damage.

通过研究久效磷(monocrotophos)对中国对虾(Penaeus chinensis)体内超氧化物歧化酶(SOD)活力的影响,从免疫毒理学方面初步探讨了有机磷农药对中国对虾的致毒作用.结果表明:久效磷胁迫可降低中国对虾体内SOD活力,且随药物浓度的增加和胁迫时间的延长,降低作用不断增强;几种组织的SOD活力对久效磷胁迫的敏感性,以肝胰腺最高,血淋巴的次之,肌肉组织相对较低.SOD活力的降低可使机体超氧阴离子自由基(O_2~-)增多,推测自由基损伤是久效磷对虾体产生毒性作用的另一可能途径。

The monocrotophos could inhibit the growth of Platymonas sp. and its 72h ?EC50 is 1. 46mg/L. Further research shows that; (1) The monocrotophos could cause an increase in car-bondehydrate content, which becomes higher with promoted intensity and prolonged time of stress; (2) Under monocrotophos stress, the content of some amino acids increases, while that of others decreases. Meanwhile, changes in the total amount of amino acids also occur.

久效磷对扁藻的生长有较强的抑制作用,其72h半抑制剂量(72h·EC_(50))为1.49mg/L.进一步研究结果表明:(1)久效磷的胁迫处理引起藻细胞碳水化合物含量的增加,随着胁迫强度的加大和胁迫时间的延长,其含量越来越高;(2)久效磷胁迫下,藻细胞中有些游离氨基酸的含量上升,有些下降,有些基本不变。同时氨基酸的总量也发生变化。

 
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