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应力调节
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  “应力调节”译为未确定词的双语例句
     Fluid shear stress regulates secretion of tissue-type plasminogen activator in human endothelial progenitor cells
     流体切应力调节内皮祖细胞分泌组织纤溶酶原激活物的研究
短句来源
     Effects of external counterpulsation on shear stress and production of nitric oxide and cGMP in canines with myocardial infarction
     体外反搏提高切应力调节NO和cGMP机制的探讨
短句来源
     AIM: To explore the effects of axial stress regulation on healing of lengthened ca llus.
     目的 :探讨轴向应力调节在延长段骨痂愈合中的作用。
短句来源
     CONCLUSION: Axial stress regulation and shortened stress may promote healing after bone leng thening.
     结论 :骨延长结束后采用轴向应力调节及短缩加压可促进骨愈合。
短句来源
     Objective In order to investigate the role of shear stress in the regulation of endothelial function, we assessed here effects of shear stress on tissue-type plasminogen activator in human endothelial progenitor cells (EPCs).
     目的研究不同流体切应力对内皮祖细胞分泌组织纤溶酶原激活物(tissuetypeplasminogenactivator,tPA)的影响,探讨切应力调节内皮功能的作用。
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     THE ADJUSTING METHOD OF FIBER STRESS DELAYER
     光纤应力延迟器的调节方法
短句来源
     2.Muscular motivation is the biofeedback regulation factor of stress adaptability of fracture healing;
     ②肌肉动力是应力适应的反馈调节因素 ;
短句来源
     adjustment of field excitation;
     励磁调节
短句来源
     adjusting the microclimate;
     调节小气候 ;
短句来源
     ,Reynolds stress(?) ,(?)
     ,雷诺应力(?)
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  stress adjustment
By solving the diffusion problem, one can find the velocity of mutual displacement of grains, the stress distribution in the segments with allowance for stress adjustment, and the amount of internal friction.
      
Perceived family environment as a moderator of young adolescents' life stress adjustment
      
The results are obtained taking into account the effect of stress adjustment at a segment.
      
Examples include post-traumatic stress disorder, stress adjustment disorder, clinical depression and anxiety.
      


AbstractThe authors designed an adiustable exteranalflxation device for the treatment of intercondylarfracture of the fmur.The results of treatment in 30cases was reviewed.The period of follow up averaged24.1 months giving good and excellent rates in 85.7%and an average range of motion of the knee 111.4 degrees. The advantages of this device are:1.trac-tion force can be applied in multiple directions for thereduction of intercondvlar fractures:2. the fixationis strong enough to prevent potential redisplace-ments;3.early...

AbstractThe authors designed an adiustable exteranalflxation device for the treatment of intercondylarfracture of the fmur.The results of treatment in 30cases was reviewed.The period of follow up averaged24.1 months giving good and excellent rates in 85.7%and an average range of motion of the knee 111.4 degrees. The advantages of this device are:1.trac-tion force can be applied in multiple directions for thereduction of intercondvlar fractures:2. the fixationis strong enough to prevent potential redisplace-ments;3.early institution of functional exercise ofthe knee is possible;4.the simultaneous use ofwooden splints and pads allows reduced number offixation pins which may produce shielding effect and5. the device is versatile that it can also be used forother fractures around the knee.

以股骨髁间骨折纵向重叠、髁间分离和远端后倾三种主要移位方式研制的调节固定器和膝功能架,经4年来30例临床实践,取得了较满意的效果,平均随访24.1月,疗效优良率为85.7%,膝活动度平均为111.4 ̄0。本装置的优越性:①可以多方向、多部位进行应力调节,起到骨折的牵引、撬拨和扣挤作用。②固定可靠,能有效地控制骨折的多向移位。③利用膝功能架,为病人创造了早期主动和被动活动膝关节的条件。④调节固定器只有4~6个经皮穿针眼,避免了外固定器穿针过多,伤害骨干及造成应力遮挡现象。⑤本装置可用于股骨干下1/3和腔骨上、下端骨折,也可连续应用于多个病人,起到一器多用,一器久用的作用。

Vascular endothelial cells, by virtue of their unique anatomical position, are constantly exposed to the fluid mechanical forces generated by flowing blood. The fluid forces could influence endothelial cell's gene expression. At a molecular level, fluid shear stress is known to increase or decrease the expression of a wide variety of genes. The shear stress responsive element(SSRE) was proposed after the identification of the first SSRE , the GAGACC sequence identified in the platelet derived growth factor(PDGF)...

Vascular endothelial cells, by virtue of their unique anatomical position, are constantly exposed to the fluid mechanical forces generated by flowing blood. The fluid forces could influence endothelial cell's gene expression. At a molecular level, fluid shear stress is known to increase or decrease the expression of a wide variety of genes. The shear stress responsive element(SSRE) was proposed after the identification of the first SSRE , the GAGACC sequence identified in the platelet derived growth factor(PDGF) B chain promoter and subsequently identified in other genes whose promoters respond to shear stress. In addition, there are the existence of other positive shear responsive regulatory elements. There is a report on the activation of these promoters in vitro and in vivo and propose an application of these mechanically inducible promoters in the treatment of vascular diseases.

内皮细胞能对力学刺激发生反应 ,流体切应力能直接调节内皮细胞基因的表达。现已发现内皮细胞内受切应力调节的基因有 2 0多种。目前认为其调节机制是通过存在于基因的启动子内并且能够被切应力所诱导的启动基因转录的顺式调控元件——应力反应元件来调节基因的转录。目前已知的应力反应元件至少涉及 4种转录因子的结合位点及 10余种受切应力调控的相关基因。这 4种转录因子分别是 :(1) NF-κB;(2 ) AP- 1;(3) Egr- 1和(4 ) SP1。对应力反应元件的基序及基序结合蛋白的鉴定有待进一步的深入 ,以后还可能有新的应力反应元件被发现。在采用基因疗法来调控血管壁不同区段基因表达这方面已进行了有益的探索 ,显示出良好的前景

AIM: To explore the effects of axial stress regulation on healing of lengthened ca llus. METHODS: Tibiofibulars of 30 rabbits were lengthened 2 cm with t wice plane sreminobicular crib external fixator. Experimental group continues to lengthen 3 mm, and then were drawn and shortened 0.5mm once every 24 h separate ly for 10 days. Ten days later, tibiofibulars were axial short-stressed 1 mm wee kly with three times. Animals were killed 58 days after operation and X-ray, bon e density and histology tests were...

AIM: To explore the effects of axial stress regulation on healing of lengthened ca llus. METHODS: Tibiofibulars of 30 rabbits were lengthened 2 cm with t wice plane sreminobicular crib external fixator. Experimental group continues to lengthen 3 mm, and then were drawn and shortened 0.5mm once every 24 h separate ly for 10 days. Ten days later, tibiofibulars were axial short-stressed 1 mm wee kly with three times. Animals were killed 58 days after operation and X-ray, bon e density and histology tests were performed with lengthened bone. RESULTS: X-ray examination had no significant difference between two group animal when le ngthen ended, but X-ray showed lengthened callus was different on day 58. In con trol group, lengthened center had a serial callus and cortex had no formed, in experimental group, lengthened center had serial cortex and transfixial medullar y cavity expect serial callus. Bone density tests with two-energetic X-ray bone density measuring device showed bone density was higher in experimental group th an control group (P<0.05). Histology showed that control group had massive cartilage cell gathering together and bone trabecula disturbance, it had no sign ificant bone cortex and medullary cavity formation. In the experimental group, c ortex and medullary cavity partly had shaped with little cartilage cells. CONCLUSION: Axial stress regulation and shortened stress may promote healing after bone leng thening.

目的 :探讨轴向应力调节在延长段骨痂愈合中的作用。方法 :采用双平面微型半环式外固定延长支架 ,对 30只兔胫腓骨进行延长。对照组延长 2cm ,实验组在达到 2cm后继续延长 3mm作为储备 ,此后 10d每日行牵拉、压缩调节各 1次 ,调节幅度 0 5mm。 10d后每周短缩加压 1次 ,每次 1mm ,共 3次。所有操作结束后 ,即第 5 8d将动物处死 ,并对骨延长段行X线片、骨密度及组织学检测。结果 :两组动物在延长结束时X线摄片检查无明显差异 ,延长段已有骨痂生长。处死后 ,两组延长段骨痂X线表现不同 :对照组延长段中央部可见骨痂连续、皮质未形成。实验组除可见骨痂连续外 ,还有连续的皮质及髓腔贯通。双能X线骨密度测量仪对两组延长段行骨密度测定显示 :对照组骨密度 (0 . 17± 0 .0 4 )g/cm3 ,实验组骨密度 (0. 2 1± 0 .0 4 )g/cm3 ,实验组骨密度较对照组高约 2 0 % (P <0 . 0 5 )。组织学检查显示 :对照组中可见大量团聚软骨细胞、骨小梁紊乱 ,无明显骨皮质、髓腔形成。实验组中可见有皮质形成 ,部分髓腔已形成 ,无明显团聚的软骨...

目的 :探讨轴向应力调节在延长段骨痂愈合中的作用。方法 :采用双平面微型半环式外固定延长支架 ,对 30只兔胫腓骨进行延长。对照组延长 2cm ,实验组在达到 2cm后继续延长 3mm作为储备 ,此后 10d每日行牵拉、压缩调节各 1次 ,调节幅度 0 5mm。 10d后每周短缩加压 1次 ,每次 1mm ,共 3次。所有操作结束后 ,即第 5 8d将动物处死 ,并对骨延长段行X线片、骨密度及组织学检测。结果 :两组动物在延长结束时X线摄片检查无明显差异 ,延长段已有骨痂生长。处死后 ,两组延长段骨痂X线表现不同 :对照组延长段中央部可见骨痂连续、皮质未形成。实验组除可见骨痂连续外 ,还有连续的皮质及髓腔贯通。双能X线骨密度测量仪对两组延长段行骨密度测定显示 :对照组骨密度 (0 . 17± 0 .0 4 )g/cm3 ,实验组骨密度 (0. 2 1± 0 .0 4 )g/cm3 ,实验组骨密度较对照组高约 2 0 % (P <0 . 0 5 )。组织学检查显示 :对照组中可见大量团聚软骨细胞、骨小梁紊乱 ,无明显骨皮质、髓腔形成。实验组中可见有皮质形成 ,部分髓腔已形成 ,无明显团聚的软骨细胞。结论 :骨延长结束后采用轴向应力调节及短缩加压可促进骨愈合。

 
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