The influencing factors and mechanisms of the electromagnetic radiation during rock fracture

Based on the laboratory experiments this paper presented that the primary influence factors about the electromagnetic radiation during rock fracture are the rock mechanics characters and mineral components. The brittle samples and samples contained quartz, pyrite, chalopyrite produce electromagnetic radiation easily. There are three fracture radiation effects. The crystal fracture effect produces the high frequency electromagnetic signals, the piezoelectric effect produces low frequency signals and the natural semiconductor effect produces middle frequency signals possessed distinct wave shapes.

Influence of Floating Body Effect on Radiation Hardness of PD SOI nMOSFETs

H-gate and closed-gate PD SOI nMOSFETs are fabricated on SIMOX substrate,and the influence of floating body effect on the radiation hardness is studied.All the subthreshold characteristics of the devices do not change much after radiation of the total dose of 106rad(Si).The back gate threshold voltage shift of closed-gate is about 33% less than that of H-gate device.The reason should be that the body potential of the closed-gate device is raised due to impact ionization,and an electric field is produced across the BOX.The floating body effect can improve the radiation hardness of the back gate transistor.

Effects of Electromagnetic Radiation on Autophagy and its Regulation

With the ever increasing application of electronic technology, our exposure to artificial electromagnetic energy is also rapidly increasing. Electromagnetic radiation （EMR） is the fourth largest source of pollution, after air, water, and noise.

Evaluation of the Exposure to Electromagnetic Fields in Computer Labs of Schools

Personal computers, apart from being ubiquitous in our everyday activity, very often have been object of study for eventual negative health consequences. During the recent years, a great number of schools in Albania are equipped with lab rooms for teaching computer skills. This has motivated us to carry out a campaign of measuring the intensity of electric and magnetic fields is such places in the schools of Gjirokastra. This paper presents the results of such a study for the evaluation of the possible hazard related to the exposure to this “electro-smog” of the students and teachers. This is done by comparing the measured values of physical quantities with the respective limits and standards recom-mended by scientists and established by European directives such as 2004/40/CE and 1999/519/CE.

Biological effects and mechanisms of shortwave radiation： a review

With the increasing knowledge of shortwave radiation,it is widely used in wireless communications,radar observations,industrial manufacturing,and medical treatments.Despite of the benefits from shortwave,these wide applications expose humans to the risk of shortwave electromagnetic radiation,which is alleged to cause potential damage to biological systems.This review focused on the exposure to shortwave electromagnetic radiation,considering in vitro,in vivo and epidemiological results that have provided insight into the biological effects and mechanisms of shortwave.Additionally,some protective measures and suggestions are discussed here in the hope of obtaining more benefits from shortwave with fewer health risks.

Synergistic effects of total ionizing dose and radiated electromagnetic interference on analog-to-digital converter

The influence of combined total ionization dose(TID)and radiated electromagnetic interference(EMI)in a commercial analog-to-digital converter(ADC)was studied.The degradation of the direct-current response,the static parameters,and the dynamic parameters caused by the TID and EMI separately and synergistically is presented.The experimental results demonstrate that the increase in TID intensifies data error and the signal-tonoise ratio(SNR)degradation caused by radiated EMI.The cumulative distribution function of EMI failure with respect to data error and SNR with different TIDs was extracted.The decreasing trend of the threshold was acquired with a small sample size of five for each TID group.The result indicates that the ADC is more sensitive in a compound radiation environment.

Challenges and opportunities of using stereotactic body radiotherapy with anti-angiogenesis agents in tumor therapy

Microvessels promote proliferation of tumor cells by delivering oxygen and nutrients, but rapid growth of tumors results in unmet demands for oxygen and nutrients, thereby creating a hypoxia microenvironment. Under hypoxic conditions, vascular endothelial cells（ECs） initiate the formation of immature and abnormal microvasculature. This results in leakage and tortuosity that facilitates tumor cell invasion, metastasis and resistance to cytotoxic treatment.Radiotherapy（RT） is a vital tumor treatment modality. Currently, more than 60% of patients with malignant tumors receive RT at certain points during their treatment. Hypoxia induced by abnormal microvessels can hamper the cytotoxic effect of ionizing radiation, particularly, stereotactic body radiotherapy（SBRT）. Anti-angiogenesis（AA） agents are known to reduce and renormalize microvessels in tumors, and hence alleviate hypoxia. The combination of AA agents with SBRT may have a synergistic role in inhibiting the growth of tumors. On the contrary, large doses of irradiation may affect tumor microvessels itself. In this review, we aim to clarify the relationship between SBRT and microvessel formation in tumors. In addition, we provide a retrospective analysis of the combination therapy involving SBRT and AA agents in preclinical and clinical practice to define its role in antitumor treatment.

Coherence Field Theory: Quantum Coherence as the Basis for a Model of Brain Function

A general definition of quantum coherence is developed from analysis of superposition, entanglement, chemical bonding behavior, and basic phenomena of classical mechanics. Various properties of atoms can be better explained if these particles are matter waves that embody a spectrum ranging from relatively coherent to decoherent states. It is demonstrated that quantum coherence so defined can comprehensively explain signal transmission in neurons and dynamics of the brain’s emergent electric field, including potential support for the claim that conscious volition is to some degree real rather than an illusion. Recent research in a physiological context suggests that electromagnetic radiation interacts with molecular structure to comprise integrated energy fields. A mechanism is proposed by which quantum coherence as accelerating electric currents in neurons may result in a broadened spectrum of electromagnetic radiation capable of interacting with molecular complexes in the brain and perhaps elsewhere in an organism to influence vibrational and structural properties. Research should investigate whether a consequent energy field is the basic perceptual substrate, with at least some additive electromagnetic wavelengths of this field involved in generating image percepts insofar as they arise from the body, and electromagnetic vibrations the signature of a more diverse phenomenon by which somewhat nondimensional features of perception such as sound, touch, taste, smell, interoceptive sensations, etc. partially arise. If examination of the brain reveals this organ to be composed of a coherence field, structured at least in part by broadened spectrums of EM radiation interacting with molecular components, this has major implications for furthering our model of the matter/mind interface and possibly physical reality in total.

Relativistic Quantum Mechanical Condition for Expansion of the Universe

In this manuscript, we will discuss about the quantum mechanical system for the movement of non-intractable particle, non-intractable particle which attends every mass state in the universe, the form of a non-intractable particle is n = -m, this manuscript defines the stable cross system for the movement of n-i particles and elementary particles with a perfect black body at centre with proofs of picture of super massive black hole, the linear hamiltonian of the cross quantum mechanical system and with this, it’s co-related matrixes, then by the use of cross system of Non-Intractable Particles defining a new right angel theorem. Then the new black body relation free from plank constant depends on non interactive mechanics and m, which has already mentioned in non-interactive mechanics and it’s relation with galaxies. The unique property of cross system is that it is surrounded by the energy of 10e + e always, and at last the relation between zero point energy and dark energy.

Clinical evaluation of 4D dynamic dose for thoracic tumor stereotactic body radiation therapy with variable parameters

Objective:To evaluate the dose uncertainty in stereotactic body radiation therapy induced by respiratory motion using a 4D dynamic dose(4DDD)reconstruction method.Methods:A retrospective analysis was conducted on five lung cancer patients who received static intensitymodulated radiation therapy.The 4DDD was constructed using beam delivery log files,four-dimensional computed tomography(4DCT)scans,and treatment plans.To evaluate the impact of respiratory motion,4DDD calculations were performed with 10 starting phases for each field.A total of 270 field doses were simulated and calculated.The differences between the cumulative volume histogram in whole-course treatment and the field doses'gamma passing rate(GPR)were compared.The correlations between plan complexity metrics and the dose deviation caused by respiratory motion were evaluated independently.The phase distributions of 398 subfields were calculated and evaluated for the influence of dose rate and breathing frequency.Results:The GPRs of all fields were different among various starting phases,with the highest range from 62.20% to 76.87% for 2 mm/3%GPR.The deviation of mean point dose was(5.42±5.21)%,and the deviation in the mean dose and D98% within the internal gross tumor volume were(0.97±0.71)% and(0.77±0.53)%,respectively.There was a significant correlation between the beam aperture-to-volume(BA2V)ratio and the average 2 mm/2%GPR(R?0.601,P<0.01).Lower dose rates led to a more homogeneous distribution of phases among subfields(t?44.100,P<0.001).Conclusions:Different beam starting phases had a limited impact on the overall treatment evaluation.However,the respiratory motion could be observed to induce dose deviations using the 4DDD reconstruction model,particularly for fields with small BA2V.

A Pursuit of Quantum Neuroscience’s Principles: Coherence Field Theory and the Physics of Mind

Some basic physics of burgeoning quantum neuroscience is described. Anatomy of the neuron suggests that nonsynaptic mechanisms of signal transmittance occur via electric current acceleration and companion electromagnetic field fluctuation. I have named this mechanism of solution chemistry the ebb effect. Phase-locking between neural structure and electric fields that are emergent from cellular EM field fluctuations, in addition to feedback loops within neural networks, are the probable driver of macroscopic oscillation and flow shapes in the brain. CEMI (conscious electromagnetic information) theory is a promising framework for explaining intentionality and the spectrum of arousal as EM field effects. Relatively low frequency electromagnetic radiation is emitted by the accelerating electric currents of neurons. It is hypothesized that this EM radiation superpositions with molecular structure as it spreads to comprise percepts, the hybrid wavelengths of which form subjective images while wavelength vibrations result in subjective feel. These superposition arrays are termed a coherence field, and in combination with the synchronizing influence of quantum entanglement and electromagnetic fluctuations may constitute much of awareness’ substance. If conclusively verified, coherence field theory should have significance ranging from the treatment of perceptual disorders such as anosognosia to advancing foundational constructs like atomic theory.

What the Photon Looks Like?

In this work, the spacetime distributions of the electric and magnetic fields of photon are revealed. It is first time found that the spacetime distributions of electric and magnetic fields of photon are source dependent. Based on this discovery, some potential applications are discussed.

Stereotactic radiosurgery:a“targeted”therapy for cancer

The developments of medicine always follow innovations in science and technology.In the past decade,such innovations have made cancer-related targeted therapies possible.In general,the term "targeted therapy" has been used in reference to cellular and molecular level oriented therapies.However,improvements in the delivery and planning of traditional radiation therapy have also provided cancer patients more options for "targeted" treatment,notably stereotactic radiosurgery(SRS) and stereotactic body radiotherapy(SBRT).In this review,the progress and controversies of SRS and SBRT are discussed to show the role of stereotactic radiation therapy in the ever evolving multidisciplinary care of cancer patients.

基于机器学习的煤岩破裂诱发电磁辐射信号智能辨识研究

电磁辐射作为一种有效监测技术已应用于冲击地压、煤与瓦斯突出等煤岩动力灾害监测预警,但因电磁信号产生机制复杂,易受井下环境干扰(干扰信号)而影响灾害危险监测预警准确性。准确辨识煤岩破裂诱发的电磁辐射信号(有效信号)是该技术应用推广的关键。开展了煤岩单轴压缩电磁辐射监测实验,分析了电磁辐射有效信号和干扰信号时域、频域及分形特征差异性,分别利用线性判别法、支持向量机和集成学习法等机器学习算法建立了电磁辐射有效信号和干扰信号智能辨识模型,并对比分析了不同模型的识别精度。结果表明:分形盒维数、平均频率、计数和峰值频率特征对电磁辐射有效信号和干扰信号区分较明显,单一特征识别准确率均在70%以上;信号特征集和机器学习算法对有效信号和干扰信号识别准确率均有影响,基于全部特征集的集成学习法识别准确率最高,对2类信号的平均识别准确率为94.5%,能够满足电磁辐射监测预警应用需求。

雷达带外三阶互调伪信号干扰效应预测模型

为评估雷达装备的抗电磁干扰性能,从电磁辐射伪信号干扰效应机理出发,理清带外多频三阶互调信号与带内单频伪信号干扰效应贡献度之间的关联关系,引入伪信号干扰效应指数的概念,建立了三阶互调伪信号干扰效应评估模型,并基于伪信号电平值的变化规律提出了模型修正方法和效应测试预测流程。以某型步进频连续波测距雷达为研究对象,采用差模注入等效替代电磁辐射的方法对受试雷达进行带外三阶互调临界伪信号干扰效应试验,结果表明:在雷达工作中心频率两侧,辐射频偏0.2~2.2 GHz的范围内,随着辐射频偏的增大,三阶互调伪信号干扰的影响呈现先增大而后降低的规律。通过改变干扰频点、场强组合和伪信号敏感电平的方式开展试验验证,证明了三阶互调伪信号干扰模型的准确度优于2 dB,能够客观评估雷达装备三阶互调伪信号干扰。

钻爆法隧道施工致灾水体预报技术研究

隧道施工时会遇到突水、突泥等地质灾害。在钻爆法施工前对掌子面前方地区科学开展超前地质预报作业,可以大大减少突涌水引发的人员伤亡和财产损失。隧道超前地质预报方法多种多样,各预报方法优点和缺点并存,对隧道施工可能遇到的致灾水体进行综合、精准预报,是当前研究的热点和难点。论述了地质调查法、物探法、超前钻探法等典型超前预报方法的原理及优缺点,从优势互补的角度提出了“物钻联合、长中短距离靶向探测”的隧道施工致灾水体综合预报技术。以某长大深埋隧道为例,通过TSP、瞬变电磁法、超前水平钻法和加深炮孔法对致灾水体进行联合探测,成功揭露出潜在的致灾水体,误差在2 m以内,说明该预报技术科学合理、流程实操性强、探测精度高。可为高风险隧道施工突涌水灾害防治提供参考。

毫米波人体安检机电磁辐射安全评价方法

毫米波人体安检机现已广泛应用在各种需要安检的场景中,其电磁辐射安全问题受到社会的关注。该文给出了毫米波人体安检机电磁辐射安全评价的方法,详细介绍了测试原理、测试仪器及测试位置的选择、测试状态的设定。该评价方法可以有效地测量毫米波人体安检机的电磁辐射,目前已作为GB/T 41482-2022的一部分应用到实际的测量中。国内外11款毫米波人体安检机的实测结果表明,毫米波人体安检机的电磁辐射均小于GB 8702-2014中的公众暴露控制限值要求,可以放心使用。

岩石破坏过程磁场效应实验研究及其对地震预报的意义

地震前岩石圈存在可观测的磁场前兆异常,岩石破坏过程的磁场效应规律却鲜有研究.本文设计建立了岩石破坏磁场效应监测实验系统,测试分析了岩石破坏过程磁场与载荷、声发射、电磁辐射之间的关系,探讨了岩石破坏磁场产生机制与岩石破坏磁场效应对地震预报的意义.结果表明:岩石在受载破坏过程能够产生磁场,磁感应强度与载荷变化存在良好的对应关系.在受载前期,磁感应强度波动增加,受载中后期,磁场强度显著增加;主破坏发生时,磁场强度快速增加并达到最大值.磁感应强度与累积声发射计数平均相关系数达到0.825,呈高度相关,表明磁场变化能够反映岩石的变形破坏阶段和状态.岩石破坏磁场的产生主要与电性变化有关,运动电荷或电流的变化产生了磁场.岩石破坏磁场与电磁辐射同属于电磁信号,磁场是一种极低频、连续、脉冲式的信号,信号频率一般为0~20 Hz;电磁辐射是一种瞬态、阵发性的电磁波,信号频率一般为kHz~MHz.相对于电磁辐射,磁场前兆异常先出现,岩石破坏的磁场监测结果对于评估地震的临震预报具有显著的意义.

雷达装备二阶互调伪信号干扰效应预测模型

为掌握雷达装备的抗电磁干扰性能,需要对其进行全面的电磁环境效应测试与评估,为雷达应用及电磁防护加固提供技术支撑。从二阶互调电磁辐射伪信号干扰效应机理出发,引入效应指数的概念将复杂电磁环境适应性的多变量问题用单一变量表征,实现了雷达装备复杂电磁环境伪信号干扰效应的定量表征,建立了二阶互调伪信号干扰效应评估模型。以某型扫频连续波测距雷达为研究对象,针对受试雷达在试验中出现的二阶互调伪信号干扰现象,给出了模型参数的确定方法,提出雷达装备二阶互调伪信号干扰效应预测评估方法。实验验证结果表明:无论是改变伪信号敏感电平,还是在大辐射频偏、大互调频差范围内改变双频电磁辐射组合,采用普适性二阶互调伪信号干扰效应模型对受试雷达进行二阶互调伪信号干扰效应评估,评估误差均在2.5 dB以内,依据效应预测方法能够客观评估雷达装备二阶互调伪信号干扰。

立体定向放疗在超中央型肺癌治疗中的应用进展

立体定向放射治疗(stereotactic body radiation therapy,SBRT)可实现不可手术超中央型肺癌(ultra-central lung cancer,UCLC)患者的靶区高剂量照射并较好保护危及器官,是目前临床治疗的探索热点。接受SBRT治疗后UCLC患者可获得较好的局部控制率、中位生存时间和总生存率,但是由于UCLC紧邻或侵犯纵隔内重要脏器,SBRT治疗会常伴有一定的不良反应风险。本文就SBRT应用于UCLC患者的临床实践及研究进展进行综述。