查询词典 infrasound

Coventry University scientists have found that in those haunted places often have a large number of infrasound.

考文垂大学的科学家已经发现，在那些闹鬼的地方常常有大量次声。

AIM To explore the effects of infrasound on the distributions of CGRP-IR in the efferent auditory pathways in guinea pigs.

目的 观察慢性次声暴露对豚鼠听觉传出通路中重要的神经递质降钙素基因相关肽分布的影响。

Objective: To study the effect of infrasound with different frequence and intensity on the level of motilin in rat duodenal mucosa.

目的；研究不同强度及频率的次声刺激对大鼠十二指肠粘膜胃动素水平的影响。

The fundamental mechanism of biological function is infrasound\'s biological resonant effect.

次声最根本的生物学作用机制是次声引起的生物共振效应。

Infrasound (0.0001-20Hz) is acoustic energy with characters of little attenuation and long distance during radiation, inaudibility, diffraction and resonance in some parameters.

次声波是频率为0.0001Hz-20Hz的声波，具有传播衰减小、传播距离远、易于衍射、一般听不到、达到一定参数可引发共振等特点。

The expression of Bcl-2mRNA and P53mRNA in hippocampus after 16Hz, 130dB infrasound treatment In 1 day group, Bcl-2mRNA and P53mRNA were expressed lightly in CA1-CA3 areas in hippocampus and dentate gyrus. Blood vessels dilated lightly. In 7d group, Bcl-2mRNA and P53mRNA were more expressed in areas mentioned above. Dilation of capillaries and small vessels was more obvious. Bcl-2mRNA and P53mRNA were strong positive in endothelial cells of vessels. In 14d group, Bcl-2mRNA and P53mRNA expression was obviously increased in pyramidal cells of hippocampus and granular cells of dentate gyrus, showing deep blue staining. a The endothelial cells in some vessels were also strong positive for Bcl-2mRNA and P53mRNA. Dilation of capillaries and small vessels was lessened. In 21d group, Bcl-2mRNA and P53mRNA expression was decreased in pyramidal cells. In 28d group, little change about the expression and distribution of Bcl-2mRNA and P53mRNA was observed. Lots of Bcl-2mRNA and P53mRNA were scattered in cortex of temporal lobe around hippocampus and callosal gyrus area. Dilation of capillaries and small vessels was lessened obviously. The expression of Bcl-2mRNA and P53mRNA in hippocampus after 16Hz, 90dB infrasound treatment.

次声作用后Bcl-2mRNA和P53mRNA在海马的表达，16Hz、130dB次声作用1d组：两者在海马〓区和齿状回轻度表达，海马内血管轻度扩张；7d组：两者表达在上述区域较1d增多，微血管和小血管扩张较显，血管内皮细胞内可见呈强阳性表达的Bcl-2mRNA和P53mRNA；14d组：海马锥体细胞和齿状回颗粒细胞内Bcl-2mRNA和P53mRNA阳性表达明显增多，呈深兰色，在部分血管内皮细胞内两者强阳性表达，微小血管扩张状态较7d减轻；21d组：锥体细胞胞浆内Bcl-2mRNA和P53mRNA表达减弱；28d组：上述表达及分布与21d组相比无明显改变，海马周围颞叶皮层和扣带回区域亦可见大量散在分布的Bcl-2mRNA和P53mRNA表达，血管扩张状态已明显减轻。90dB次声作用1d-7d后，较对照组无明显变化，14d-21d后轻度表达，28d后，Bcl-2mRNA和P53mRNA表达较强。

In 1-7d group, the difference between experimental group and control group was not significant. In 14-21d group, Bcl-2mRNA and P53mRNA were expressed lightly. In 28d group, the expression were comparatively strong. The results indicated that, after exposure to infrasound with some parameters, with the days elapsing, Bcl-2mRNA expression in neurons of mice hippocampus displayed certain regularity. The progressive increase suggested that infrasound could injure hippocampus, and resultantly, injure and repair neurons DNA.

据此，我们认为：当一定参数的次声作用小鼠后，随着作用天数的延长，小鼠海马内神经细胞Bcl-2mRNA表达有一定规律性，总体趋势表达增强，随次声作用次数进一步增多，21d组和28d组有产生适应的倾向，其意义在于次声作用后引起海马损伤，使神经元DNA损伤并产生修复。

METHODS Three hundred SD rats were ran-domized into six groups:Control,infrasound damage1,3,7,14and21times.8and16Hz,90,100,110,120,130dB infrasound damage was applied to infrasonic damage groups for2h once according to the planned schedule.

SD大鼠300只随机分为正常对照组和次声作用1次，3次，7次，14次，21次6组，置本校研制的次声压力仓内致伤。

These brain regions are sensitive to infrasound and effects of infrasound can increase expression of GFAP.

这些脑区对次声较为敏感，次声作用可导致GFAP表达增高。

Since the human body and organs in the body can be seen as more focused, more flexible point of vibration whose vibration inherent in the frequency infrasound vibrations, so infrasound have a stronger effect on the human body.

人体和体内器官固有振动频率均在次声震动范围内，次声波对人体有较强的作用效果。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。