發(fā)布時間：2018-04-26 16:27

  本文選題：電磁場 + 生物效應�。� 參考：《電子科技大學》2012年博士論文

【摘要】：當前，環(huán)境電磁污染日益嚴重，引起了全球眾多衛(wèi)生機構(gòu)的重視，如何確定環(huán)境中存在的電磁輻射對于人體健康的影響是各學者關(guān)注的主要問題之一，電磁場生物效應的發(fā)生與發(fā)展與電磁場本身的特性以及生物組織的電磁學性質(zhì)密切相關(guān)，而生物組織的電磁學性質(zhì)又隨著電磁場頻率的變化而變化，因此，很有必要對于不同電磁輻射作用下生物組織的電磁學特性進行研究，在這篇論文中，我們研究了靜磁場、紅外輻射、極低頻電磁場照射作用前后大鼠不同組織的電學特性的變化，分析了以上不同類型電磁場對于生物體產(chǎn)生的一些具體的影響，對于不同類型的電磁場曝露作用的大鼠組織進行紅外光譜測量，分析了不同電磁場曝露作用對于大鼠組織結(jié)構(gòu)的改變進行了研究，，并對于電磁輻射影響健康的機理及其防護策略進行了初步的研究。本論文的主要研究工作可概括為以下幾部分： 第一，主要對于15個大鼠活性組織在10kHz-10MHz的頻率范圍內(nèi)的電學特性進行了測量，并利用εr10k/εr10M數(shù)值評價了不同組織的含水量的大小，同時還對于大鼠血液，睪丸和腦組織電學特性隨離體后半小時內(nèi)隨時間的變化關(guān)系進行了測量。并對于上述諸測量結(jié)果進行了分析，研究了不同組織電學特性的差異及其原因。研究結(jié)果表明不同的生物組織具有不同的電學特性，不同組織電學特性的差異較大，一些組織的含水量較高，因此電導率偏高，含水量較高的組織的εr10k/εr10M數(shù)值也較大。大鼠電磁敏感組織電學特性隨時間的變化的結(jié)果是離體后其介電常數(shù)在不同頻段表現(xiàn)的變化趨勢基本相同，即隨著離體時間的增大，其相對介電常數(shù)變小，并且變化幅度隨著時間增大而變小。電導率在不同頻點的變化趨勢也基本相同，大多數(shù)是隨著離體時間的增大而減小。 第二，在已經(jīng)測得的生物活性組織電學特性的基礎(chǔ)上，利用測量結(jié)果計算了外場在體內(nèi)的耦合結(jié)果和不同頻率電磁輻射熱效應的發(fā)生規(guī)律，認為外場頻率越低的電磁波穿透生物組織的能力就越強。 第三，通過電磁場曝露作用對大鼠電磁敏感組織的電學特性的改變研究了電磁場與生物體的相互作用的特點，其中重點研究靜磁場，工頻電磁場以及紅外線等場曝露作用前后大鼠電磁敏感組織的電學特性的改變情況。通過研究發(fā)現(xiàn)經(jīng)過電磁場曝露一定時間作用以后，大鼠敏感組織的電學特性產(chǎn)生一定的變化，其中有部分頻率點的變化較大，實驗組與對照組相比具有顯著差異。文章進一步結(jié)合電磁場理論分析了電磁場曝露作用導致大鼠組織電學特性變化的可能的機理。 第四，通過紅外光譜技術(shù)分析靜磁場、工頻電磁場和紅外線輻射曝露對于大鼠敏感組織紅外光譜特征的影響，研究各類電磁場曝露作用對于血液、神經(jīng)、生殖系統(tǒng)的影響，分別測量了大鼠在接受一定時間的電磁場曝露后其血液，睪丸和腦組織的紅外光譜數(shù)據(jù)，并分析了實驗組和對照組在峰位、峰形以及二階導數(shù)譜的區(qū)別及其可能產(chǎn)生的原因，以期能夠明確電磁輻射的遺傳損傷位點和效應機制，為電磁輻射危害的醫(yī)學防護提供依據(jù)。 第五，研究紅外場曝露對于疾病模型大鼠的影響。主要利用紅外場曝露高血糖大鼠考查紅外場曝露對于高血糖大鼠血液組織電學特性以及紅外光譜特性等方面的影響來探討紅外線曝露對于高血糖大鼠產(chǎn)生影響的機理，研究結(jié)果認為紅外場曝露有助于高血糖大鼠的恢復，電學特性和紅外光譜特性的測試結(jié)果表明紅外場曝露有助于高血糖大鼠接近于正常大鼠。
[Abstract]:At present, environmental electromagnetic pollution is becoming more and more serious, which has aroused the attention of many health institutions all over the world. How to determine the influence of electromagnetic radiation on human health is one of the main concerns of various scholars. The occurrence and development of the biological effect of electromagnetic field and the characteristics of the electromagnetic field itself and the electromagnetics of biological tissues are closely related. The electrical and magnetic properties of biological tissues vary with the frequency of electromagnetic fields. Therefore, it is necessary to study the electromagnetics characteristics of biological tissues under different electromagnetic radiation. In this paper, we studied the electromagnetics of the different tissues of rats before and after the effect of static magnetic field, infrared radiation, and extremely low frequency electromagnetic field irradiation. The specific effects of different types of electromagnetic fields on organisms were analyzed. The infrared spectrum of rats with different types of electromagnetic field exposure was measured. The changes of tissue structure in rats were analyzed by different electromagnetic field exposure, and the effects of electromagnetic radiation on health were also studied. The main research work of this paper can be summarized as follows:
First, the electrical properties of the active tissues of 15 rats were measured in the frequency range of 10kHz-10MHz. The water content of different tissues was evaluated using the value of epsilon r10k/ e r10M, and the electrical characteristics of the rat blood, testis and brain tissue were measured with time in the half hour after the body. The results of these measurements are analyzed and the differences and reasons of electrical characteristics of different tissues are studied. The results show that different biological tissues have different electrical characteristics, the differences in electrical properties of different tissues are larger, the water content of some tissues is higher, so the electrical conductivity is high and the high water content of the tissue is r10k/ epsilon R1 The electrical properties of the electromagnetically sensitive tissues of the rats are also larger. The electrical properties of the electromagnetically sensitive tissues of rats are changed with time. The change trend of the dielectric constant in different frequency bands is basically the same, that is, the relative dielectric constant becomes smaller with the increase of the time, and the amplitude of the change decreases with the increase of time. The change of electrical conductivity at different frequency points is the same. The potential is basically the same, and most of them decrease with the increase of in vitro time.
Second, on the basis of the electrical properties of the bioactive tissues that have been measured, the results of the coupling in the body and the law of the thermal effects of electromagnetic radiation at different frequencies are calculated by the measurement results. The stronger the ability of the electromagnetic wave to penetrate biological tissues is that the lower the field frequency is.
Third, the electrical characteristics of electromagnetically sensitive tissues of rats were changed by electromagnetic field exposure. The characteristics of the interaction between the electromagnetic field and the organism were studied. The changes in the electrical properties of the electromagnetically sensitive tissues of rats before and after the exposure to the magnetic field, the power frequency electromagnetic field and the infrared field were focused on. After exposure of the electromagnetic field for a certain period of time, the electrical characteristics of the sensitive tissues of rats have been changed to a certain extent, and some of the frequency points vary greatly. The experimental group has a significant difference compared with the control group. This paper further combines the electromagnetic field theory to analyze the possible changes in the electrical characteristics of the tissue of the rats. Mechanism.
Fourth, the effects of magnetic field, power frequency electromagnetic field and infrared radiation exposure on infrared spectrum characteristics of sensitive tissues of rats were analyzed by infrared spectroscopy. The effects of various electromagnetic field exposure on blood, nerve and reproductive system were studied. The blood, testicles and brain of rats were measured after exposure to electromagnetic field for a certain time. The infrared spectrum data of the tissue and the difference between the peak position, the peak shape and the two order derivative spectrum of the experimental group and the control group and the possible causes are analyzed in order to clarify the genetic damage loci and the effect mechanism of the electromagnetic radiation, and provide the basis for the medical protection of the electromagnetic radiation hazards.
Fifth, the effect of infrared field exposure on the disease model rats was studied. The effects of infrared field exposure on the electrical and infrared spectral characteristics of blood tissue in hyperglycemic rats were mainly used to investigate the effect of infrared exposure on Hyperglycemia Rats. The results showed that the effects of infrared exposure on Hyperglycemia Rats were discussed. The infrared field exposure was helpful to the recovery of hyperglycemic rats. The test results of electrical and infrared spectral characteristics showed that infrared exposure could help hyperglycemic rats close to normal rats.

【學位授予單位】：電子科技大學
【學位級別】：博士
【學位授予年份】：2012
【分類號】：R142

【引證文獻】

相關(guān)碩士學位論文 前1條

1 張文曉;基于原子力顯微鏡探針的細胞電學特性研究[D];長春理工大學;2014年

本文編號：1806777