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EQT微量子生态能技术对水稻产量及耕地质量的影响
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作者 周启康 张天炽 《吉林农业》 2019年第2期67-67,共1页
水稻种植使用EQT微量子生态能技术,不使用化肥农药,同样能满足水稻健康生长所需,667m^2施用EQT微量子生态能土133.4kg、生物酵素46.7L,同时使用EQT微量子生态能水处理设备对灌溉水进行处理后,灌溉效果最好。
关键词 微量子 水稻产量 耕地质量
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微量子光影触控技术的智慧教学系统实现终端的技术分析
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作者 张锦丰 《电子技术与软件工程》 2019年第23期248-249,共2页
本文将从微量子光影触控技术出发,分析其数字化的特点,并对其教学活动以及使用进行研究。从技术层面进行分析,研究微量子光影触控技术下的智慧教学。
关键词 智慧教学 微量子光影控制技术 技术研究
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微量子腔结边电荷极化结构中的线性和二阶非线性动态电导性质的研究 被引量:2
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作者 赵学安 何军辉 《物理学报》 SCIE EI CAS CSCD 北大核心 2004年第4期1201-1206,共6页
采用有效哈密顿量和有相互作用的分立势模型 ,利用格林函数和耦合参量得出了量子点 (腔 )在有结边电荷积累极化时的线性和二阶非线性交流电导虚部 (emittance)的明确表达式 .发现在经典情况下 ,电导虚部和电化学电容都等于经典的几何电... 采用有效哈密顿量和有相互作用的分立势模型 ,利用格林函数和耦合参量得出了量子点 (腔 )在有结边电荷积累极化时的线性和二阶非线性交流电导虚部 (emittance)的明确表达式 .发现在经典情况下 ,电导虚部和电化学电容都等于经典的几何电容 .在非经典情况下 ,如果发生全反射 ,电导虚部和电化学电容相等 ,但两者皆不等于经典的几何电容 .在有隧穿的情况下 ,电导虚部和电化学电容以及经典电容三者都不相等 . 展开更多
关键词 电化学电容 交流电导 格林函数 微量子 有效哈密顿量 结边电荷极化结构 器件
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Simulation of Quantum Noise in the Low-Light-Level Imaging System 被引量:3
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作者 邹正峰 芦汉生 +1 位作者 白廷柱 高稚允 《Journal of Beijing Institute of Technology》 EI CAS 2001年第2期186-190,共5页
A mathematical model of quantum noise having much effect on the low light imaging system is set up. To simulate the quantum noise, the random numbers obeying noise distribution must be formed and are weighted on the... A mathematical model of quantum noise having much effect on the low light imaging system is set up. To simulate the quantum noise, the random numbers obeying noise distribution must be formed and are weighted on the basis of the model created. Three uniform random sequences are built by the linear congruential method, of which two are used to form integer number and decimal fraction parts of the new random sequence respectively and the third to shuffle the new sequence. And then a Gauss sequence is formed out of uniform distribution by a function transforming method. It actualizes the simulation in real time of quantum noise in the low light imaging system, where video flow is extracted in real time, the noise summed up and played back side by side with the original video signs by a simulation software. 展开更多
关键词 SIMULATION quantum noises low light level imaging
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Effect of trace elements on growth of Pinus tabulaeformis seedling 被引量:7
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作者 刘晓东 《Journal of Forestry Research》 SCIE CAS CSCD 2002年第4期285-288,337,共4页
The stimulative effect of trace elements on seed germination and seedling growth of Pinus tabulaeformis was tested. The experiments were carried out on seed soak and topdressing with different trace elements and varie... The stimulative effect of trace elements on seed germination and seedling growth of Pinus tabulaeformis was tested. The experiments were carried out on seed soak and topdressing with different trace elements and varied concentrations at the nursery of Gardens Research Institute, Harbin, in 2000-2001. The experimental results showed that soaking seed with 1% and 0.2% concentrations of Mn element produced best result for seed germination, and the germination rate was increased by 9%~19% for the seeds treated with 1% concentration and 12%~14% for the seeds treated with 0.2% concentration compared with the control group. The seeds treated with boron element had lowest germination rate. For trace element topdressing, Mn and Mo elements presented good result for seedling growth and the treatment with low concentration was even better. The height or chlorophyll content of the seedlings with spray of low-concentration Mn and Mo element was much higher than that of untreated ones. In the contrast to the treating method of seed soak, topdressing (application of spraying on foliage) had evident effect on seedling growth. 展开更多
关键词 Pinus tabulaeformis Trace element Seed soaking TOPDRESSING Seed germination Seedling growth
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Evolution of Self-Organized Ge Quantum Dots During Ultra High Vacuum Annealing
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作者 胡冬枝 杨建树 +3 位作者 蔡群 张翔九 胡际璜 蒋最敏 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2002年第6期561-564,共4页
The evolution of self organized Ge quantum dots structure is investigated by scanning tunneling microscopy and atomic force microscopy during annealing treatment up to 700℃ in an ultra high vacuum(UHV) system.When t... The evolution of self organized Ge quantum dots structure is investigated by scanning tunneling microscopy and atomic force microscopy during annealing treatment up to 700℃ in an ultra high vacuum(UHV) system.When the sample temperature rises to 630℃,a great amount of new dots emerge on the wetting layer,which are believed to be incoherent islands compared with the dislocation free coherent islands formed during molecular beam epitaxy growth. 展开更多
关键词 quantum dots Si based materials evolution of morphology atomic force microscopy
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Beryllium-distribution in metallic glass matrix composite containing beryllium 被引量:1
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作者 郭振玺 王永胜 +7 位作者 朱陆军 张跃飞 张振华 柯小行 林均品 郝国建 张泽 隋曼龄 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2017年第1期110-116,共7页
The morphologies, sizes, compositions and volume fractions of dendritic phases in in situ Ti-based metallic glass matrix composites (MGMCs) containing beryllium (Be) with the nominal composition of Tia7Zr19Cu5V12B... The morphologies, sizes, compositions and volume fractions of dendritic phases in in situ Ti-based metallic glass matrix composites (MGMCs) containing beryllium (Be) with the nominal composition of Tia7Zr19Cu5V12Be17 (mole fraction, %) were investigated using XRD, SEM, EBSD, TEM, EDS and three-dimensional reconstruction method. Moreover, visualized at the nanoscale, Be distribution is confirmed to be only present in the matrix using scanning transmission electron microscopy-electron energy loss spectroscopy (STEM-EELS). Based on these findings, it has been obtained that the accurate chemical compositions are Wi28.3Zr19.7Cu8V6.4Be37.6 (mole fraction, %) for glass matrix and Wi62.nZr18.aCu2.6V16.6 (mole fraction, %) for the dendritic phases, and the volume fractions are 38.5% and 61.5%, respectively. It is believed that the results are of particular importance for the designing of Be-containing MGMCs. 展开更多
关键词 metallic glass COMPOSITES microstructure electron energy loss spectroscopy Be-distribution
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Temperature Dependence of Vacuum Rabi Splitting in a Single Quantum Dot-Semiconductor Microcavity
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作者 朱卡的 李惠生 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2006年第3期489-493,共5页
The quantum dynamics of an exciton dressed by acoustic pnonons in an optically driven quantum dotsemiconductor microcavity at finite temperatures is investigated theoretically by quantum optics methods. It is shown ... The quantum dynamics of an exciton dressed by acoustic pnonons in an optically driven quantum dotsemiconductor microcavity at finite temperatures is investigated theoretically by quantum optics methods. It is shown that the temperature dependence of the vacuum Rabi splitting is 2√2g×exp[ - ∑qλq(Nq+1/2)],where Nq=1/[exp(ωq/kBT)-1] is the phonon population, g is the single-photon Rabi frequency, and λq corresponds to exciton-phonon coupling. 展开更多
关键词 semiconductor microcavity quantum dot EXCITON Vacuum Rabi solittin
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Primary Speciation Analysis on 6 Kinds of Microelements in Glycyrrhiza uralensis Fisch. 被引量:1
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作者 梁新华 李梦菊 +1 位作者 王俊 郑彩霞 《Agricultural Science & Technology》 CAS 2010年第1期96-98,146,共4页
[Objective]The aim was to analyze the primary speciation of 6 microelements in Glycyrrhiza uralensis Fisch. and provide theoretical basis for explaining pharmacodynamic principle of liquorice and discussing quality co... [Objective]The aim was to analyze the primary speciation of 6 microelements in Glycyrrhiza uralensis Fisch. and provide theoretical basis for explaining pharmacodynamic principle of liquorice and discussing quality control of liquorice planting. [Method]The 6 elements Cu,Zn,Ca,Fe,Mg and Mn in roots of G.uralensis were extracted based on traditional decoction method and were separated into water-soluble state and suspension state by micro porous filtering film. The elements in water-soluble state were detected by flame atomic adsorption spectrophotometry (FAAS). [Result]The results showed that extractive rates of the elements were in the range of 1.71%-60.06%,and immerse-residue ratio in 0.018 3-1.682 0; the results also indicated that the immerse-residue ratio of Zn was biggest (1.68),Zn played an important medical role and might be considered as the best characteristic element in G.uralensis; the recoveries of the elements were ranged from 95.72% to 103.15% and relative standard deviations (RSD) were less than 2.38%. [Conclusion]Because of its high accuracy,FAAS method is feasible for analyzing primary speciation of microelements in G.uralensis. 展开更多
关键词 Glycyrrhiza uralensis Fisch. Microelement Flame atomic adsorption sepctrophotometry (FAAS) Primary speciation analysis
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尿微量白蛋白与转化生长因子β1在高血压肾病发病机制中的作用观察 被引量:2
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作者 苗金红 张军军 +2 位作者 王俊平 孙莉莉 田喜梅 《医药论坛杂志》 2014年第8期7-8,共2页
目的尿微量白蛋白与转化生长因子β1在高血压肾病发病机制中的作用价值。方法选取郑州大学第一附属医院收治的360例患者作为研究对象,分为128例高血压肾病组、112例高血压组、120例对照组,用酶联免疫吸附法测定血清转化生长因子β1水平... 目的尿微量白蛋白与转化生长因子β1在高血压肾病发病机制中的作用价值。方法选取郑州大学第一附属医院收治的360例患者作为研究对象,分为128例高血压肾病组、112例高血压组、120例对照组,用酶联免疫吸附法测定血清转化生长因子β1水平,用常规生化法检测尿微量白蛋白水平,并进行组间比较。结果血清转化生长因子β1的水平在对照组和高血压组之间有统计学意义,P<0.05;高血压组和高血压肾病组之间有统计学意义,P<0.05;尿微量白蛋白在对照组和高血压组之间无统计学意义,P>0.05;高血压组和高血压肾病组之间有统计学意义,P<0.05。结论对高血压肾病患者进行TGF-β1、尿微量白蛋白检测监护,可以及早发现肾功能损害、及早治疗,对于降低患者的死亡率和提高患者身体健康有着极其重要意义。 展开更多
关键词 转化生β1尿微量白蛋白 高血压肾病
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Smaller Ge Quantum Dots Obtained by ArF Excimer Laser Annealing
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作者 曾玉刚 韩根全 余金中 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2008年第4期641-644,共4页
Ge self-assembled quantum dots (SAQDs) are grown with a self-assembled UHV/CVD epitaxy system. Then, the as-grown Ge quantum dots are annealed by ArF excimer laser. In the ultra-shot laser pulse duration, -20ns, bul... Ge self-assembled quantum dots (SAQDs) are grown with a self-assembled UHV/CVD epitaxy system. Then, the as-grown Ge quantum dots are annealed by ArF excimer laser. In the ultra-shot laser pulse duration, -20ns, bulk diffusion is forbidden,and only surface diffusion occurs, resulting in a laser induced quantum dot (LIQD). The diameter of the LIQD is 20-25nm which is much smaller than the as-grown dot and the LIQD has a higher density of about 6 ×10^10cm^-2. The surface morphology evolution is investigated by AFM. 展开更多
关键词 Ge quantum dot ArF excimer laser annealing LIQD AFM
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A Solenoid-Type Inductor Fabricated by MEMS Technique
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作者 高孝裕 周勇 +3 位作者 王西宁 雷冲 陈吉安 赵小林 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2005年第6期1083-1086,共4页
A solenoid-type inductor for high frequency application is realized using a micro-electro-mechanical systems (MEMS) technique.In order to achieve a high inductance value and Q-factor,UV-LIGA,dry etching technique,fine... A solenoid-type inductor for high frequency application is realized using a micro-electro-mechanical systems (MEMS) technique.In order to achieve a high inductance value and Q-factor,UV-LIGA,dry etching technique,fine polishing and electroplating technique are adopted.The dimensions of the inductor are 1500μm×900μm×70μm,having 41 turns with a coil width of 20μm separated by 20μm spaces and a high aspect ratio of 3.5∶1.The maximum measured inductance of the inductor is 6.17nH with a Q-factor of about 6. 展开更多
关键词 inductance value microelectromechanical systems quality factor
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Determination of Five Metallic Elements in Guoshangye from Guizhou by Microwave Digestion-flame Atomic Absorption Spectrometry
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作者 马四补 王绍辉 +2 位作者 刘同祥 李开斌 陈维 《Agricultural Science & Technology》 CAS 2016年第2期262-264,共3页
In the study, the contents of 5 trace elements including Fe, Cu, Mg, Mn and Ca were directly analyzed by flame atomic absorption spectroscopy in Gu- oshangye. The sample was subjected to microwave digestion with HNO3 ... In the study, the contents of 5 trace elements including Fe, Cu, Mg, Mn and Ca were directly analyzed by flame atomic absorption spectroscopy in Gu- oshangye. The sample was subjected to microwave digestion with HNO3 and H2O2, and detected by the standard curve method. The results showed that Guoshangye contained abundant trace elements which rates of these trace elements were in the curacy and satisfactory. were necessary for human. The recovery range of 96%-103%. The method is ac- 展开更多
关键词 Trace elements Guoshangye Flame atomic absorption spectroscopy
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Determination of Trace Elements in Potatoes by Flame Atomic Absorption Spectrometry
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作者 王宁芳 《Agricultural Science & Technology》 CAS 2014年第5期716-717,723,共3页
[Objective] This study aimed to analyze the contents of trace elements in potatoes from different production areas in Qinghai Province. [Method] By flame atomic absorption spectrometry (FAAS), the contents of variou... [Objective] This study aimed to analyze the contents of trace elements in potatoes from different production areas in Qinghai Province. [Method] By flame atomic absorption spectrometry (FAAS), the contents of various trace elements in potatoes were determined. [Result] Potatoes contain abundant trace elements such as Cu, Zn, Fe, Mn, Ca, K and Mg. To be specific, the contents of Ca, K and Mg were relatively high. [Conclusion] By using FAAS, the relative standard deviation was 1.17%-2.75% and the recovery rate was 97%-99.5%, indicating accurate and reli-able results with high precision. 展开更多
关键词 POTATO Flame atomic absorption spectrometry Trace elements Relative deviation PRECISION
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Reduction of Nitrate to Ammonium in Selected Paddy Soils of China *1 被引量:6
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作者 YINSHIXUE SHENQIRONG 《Pedosphere》 SCIE CAS CSCD 1998年第3期221-228,共8页
Three paddy soils were examined for their capacities of dissimilatory reduction of nitrate to ammonium (DRNA). 15 N labelled KNO 3 was added at the rate of 100 mg N kg -1 . Either glucose or rice straw ... Three paddy soils were examined for their capacities of dissimilatory reduction of nitrate to ammonium (DRNA). 15 N labelled KNO 3 was added at the rate of 100 mg N kg -1 . Either glucose or rice straw powder was incorporated at the rate of 1.0 or 2.0 mg C kg -1 respectively. Three treatments were designed to keep the soil saturated with water: A) a 2 cm water layer on soil surface (with beaker mouth open); B) a 2 cm water layer and a 1 cm liquid paraffin layer (with beaker mouth open); and C) water saturated under O 2 free Ar atmosphere. The soils were incubated at 28 oC for 5 days. There was almost no 15 N labelled NH + 4 N detected in Treatment A. However, there was 1.4 to 3.4 mg N kg -1 15 N labelled NH + 4 N in Treatment B and 2.1 to 13.8 mg N kg -1 in Treatment C. Glucose was more effective than straw powder in ammonium production. Because there was sufficient amount of non labelled NH + 4 N in the original soils, 15 N labelled NH + 4 N produced as such should be the result of dissimilatory reduction. Studies on microbial population showed that there were plenty of bacteria responsible for DRNA process (DRNA bacteria) in the soils examined, indicating that number of DRNA bacteria was not a limiting factor for ammonium production. However, DRNA bacteria were inferior in number to denitrifiers. DRNA process in soil suspension seemed to start after 5 days of incubation. Glycerol and sodium succinate, though both are readily available carbon sources to organisms,did not facilitate DRNA process. DRNA occurred only when glucose was available and at the C/NO 3 - N ratio of over 12. It seemed that both availability and quality of the carbon sources affected DRNA. 展开更多
关键词 carbon source dissimilatory reduction of nitrate to ammonium microbial population
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Comments on process of duplex coatings on aluminum alloys 被引量:2
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作者 Samir H.A. 钱翰城 +1 位作者 夏伯才 吴仕明 《Journal of Central South University of Technology》 EI 2004年第3期239-245,共7页
Despite the great achievements made in improvement of wear resistance properties of aluminum alloys, their applications in heavy surface load-bearing are limited. Single coating is insufficient to produce the desired ... Despite the great achievements made in improvement of wear resistance properties of aluminum alloys, their applications in heavy surface load-bearing are limited. Single coating is insufficient to produce the desired combination of surface properties. These problems can be solved through the duplex coatings. The aim of the present study is to overview the research advances on processes of duplex coatings on (aluminum) alloys combined with micro plasma oxidation process and with other modern processes such as physical vapour deposition and plasma assisted chemical vapour deposition and also to evaluate the performance of micro plasma oxidation coatings in improving the load-bearing, friction and wear resistance properties of aluminum alloys in comparison with other coatings. Wherein, a more detailed presentation of the processes and their performances and disadvantages are given as well. 展开更多
关键词 aluminum alloy duplex coating micro plasma oxidation physical vapour deposition plasma assisted chemical vapour deposition tribological property
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Multiple Entropy Measures for Multi-particle Pure Quantum State 被引量:3
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作者 刘丹 赵鑫 龙桂鲁 《Communications in Theoretical Physics》 SCIE CAS CSCD 2010年第11期825-828,共4页
We propose to use a set of averaged entropies, the multiple entropy measures (MEMS), to partiallyquantify quantum entanglement of multipartite quantum state.The MEMS is vector-like with m = [N/2] components:[S_1, S_2,... We propose to use a set of averaged entropies, the multiple entropy measures (MEMS), to partiallyquantify quantum entanglement of multipartite quantum state.The MEMS is vector-like with m = [N/2] components:[S_1, S_2,..., S_m], and the i-th component S_i is the geometric mean of i-qubits partial entropy of the system.The S_imeasures how strong an arbitrary i qubits from the system are correlated with the rest of the system.It satisfies theconditions for a good entanglement measure.We have analyzed the entanglement properties of the GHZ-state, theW-states, and cluster-states under MEMS. 展开更多
关键词 MEMS entanglement measure multiple entropy measures
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Quantum theory analysis on microscopic mechanism of the interaction of laser with cell membrane 被引量:2
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作者 XU Lin ZHANG Can-bang +3 位作者 WANG Sheng-yu LI Ling WANG Rui-li ZHOU Ling-yun 《Optoelectronics Letters》 EI 2007年第3期234-236,共3页
On the basis of liquid crystal model with the electric dipole moment of cell membrane,the microscopic mechanism of the electricity and thermology effects of interaction of laser with cell membrane is researched by ele... On the basis of liquid crystal model with the electric dipole moment of cell membrane,the microscopic mechanism of the electricity and thermology effects of interaction of laser with cell membrane is researched by electromagnetic,quantum mechanics and quantum statistics. We derive the formulas on the polarization effects and "temperature-rising effect" of laser-cell membrane interaction. The results of the theoretical research can explain some experiments. 展开更多
关键词 激光 细胞膜 相互作用 显微机制 理论分析
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Comparison and Analysis of Two Microwave Equivalent-Circuit Models for Resonant Tunneling Diode
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作者 钟鸣 张世林 +2 位作者 郭维廉 梁惠来 毛陆虹 《Journal of Semiconductors》 EI CAS CSCD 北大核心 2004年第11期1370-1375,共6页
The distinction between two microwave equivalent-circuit models,quasi Esaki tunneling model (QETM) and quantum well injection transit model (QWITM),for the resonant tunneling diode (RTD) is discussed in details,and tw... The distinction between two microwave equivalent-circuit models,quasi Esaki tunneling model (QETM) and quantum well injection transit model (QWITM),for the resonant tunneling diode (RTD) is discussed in details,and two groups of circuit parameters are extracted from experiment data by the least square fit method.Both theory analysis and the comparison of fit results demonstrate that QWITM is much more precise than QETM.In addition,the rationality of QWITM circuit's parameters confirms it too.On this basis,the resistive frequency is calculated,whose influence factors and improvement method are simply discussed as well. 展开更多
关键词 resonant tunneling diode microwave equivalent-circuit quantum well injection transit resistive frequency
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Objects Obtained by y Quanta Irradiation with Threshold Energy of 10 MeV of Pure Gaseous He, under High Pressure, in CuBe2 Apparatus 被引量:1
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作者 Roland Wisniewski Alexander Yu. Didyk Teresa Wilczyfiska-Kitowska 《Journal of Physical Science and Application》 2015年第4期268-276,共9页
A HeHPC (Helium high pressure chamber) filled up with pure gaseous helium at initial pressure about 1.1 bar was irradiated by braking γ-rays of 10 MeV threshold energy during 1.0 × 10^5 s at the electron beam ... A HeHPC (Helium high pressure chamber) filled up with pure gaseous helium at initial pressure about 1.1 bar was irradiated by braking γ-rays of 10 MeV threshold energy during 1.0 × 10^5 s at the electron beam current 22 - 24 μA. After irradiation, the residual pressure inside was equal to 430 bar. Synthesized foils of black color and other multiple objects were found inside the HeHPC mainly at the entrance window for γ-rays made from beryllium bronze as a plug of beryllium bronze HPC, at the inner surfaces of the reaction chamber made of high purity copper and at the copper collector. The element analysis, using SEM (Scanning electron microscopy) and MPRA (Microprobe roentgen analysis), allowed us to establish that the foils consist predominantly of carbon and the smaller quantities of other elements from carbon to iron. An explanation for the observed elements is suggested on the basis of helium fusion reactions under the action of y-rays with the reactions taking place in giant stars (thermally activated). The possible mechanism after 3α reaction is nα reactions and under barrier reactions. A second experiment with initial pressure of 3.05 kbar (with pressure drop by about 65 bar - after almost the same procedure of y-rays irradiation and with fully beryl bronze environment) suggests another possible nuclear reactions - He(Be, p)C, He(C, γ)O, and so on. The developed approach agrees well with a series of studies carried out by the authors where dense hydrogen and deuterium gases are acted on by γ-rays in the presence or absence of metals in the reaction chambers. 展开更多
关键词 IRRADIATION high pressure HELIUM PACS 25.20.Dc 25.45.De.
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