thin

摘要： In recent years,the semi-airborne transient electromagnetic method(SATEM)has been rapidly developed in China.Based on the theoretical development of the long grounding wire source transient electromagnetic method,the unmanned aerial vehicle is equipped with the receiving coil to collect the electromagnetic response data at high altitude,making the TEM no longer affected by the terrain and greatly improving the actual working efficiency.However,its flight altitude has not been concerned for a long time.It is generally believed that the change of flight altitude only affects the amplitude of the received response.However,under special circumstances,the electromagnetic response data received at different flight altitudes in the near and far regions may lose the characteristic information of the target geological body.This paper simulates the low resistance thin layer model and analyzes the electromagnetic responses of different receiving heights under different transceiver distances.The results show that in the near area,when the flight altitude is higher than 30 meters or more,the received electromagnetic response will lose the information of the shallow lowresistance thin layer,while in the far area,the change of flight altitude has no obvious influence on the characteristic electromagnetic response information of the received geological body.

摘要： I am in a middle school now. I have class from Monday to Friday. I am busy with my study,so I don’t have much time to play. My life after class is colorful. The first thing I need to do is to finish my homework. Only when I finish it, I can go to play with my friends happily.

摘要： The perovskite material has many superb qualities which allow for its remarkable success as solar cells;flexibility is an emerging field for this technology.To encourage commercialization of flexible perovskite solar cells,two main areas are of focus:mitigation of stability issues and adaptation of production to flexible substrates.An in-depth report on stability concerns and solutions follows with a focus on Ruddlesden-Popper perovskites.Roll to roll processing of devices is desired to further reduce costs,so a review of flexible devices and their production methods follows as well.The final focus is on the sustainability of perovskite solar cell devices where recycling methods and holistic environmental impacts of devices are done.

摘要： A theoretical design of a multi-layer for Nd:YAG mirrors resonator is described in this work. An output coupler was designed and fabricated by successive thin layers to achieve very high transmittance at optical wavelengths around 1064 nm for Nd:YAG mirrors resonator. The different film optical filters were used to control the transmittance and reflectance. The three samples of dielectric materials composed of HfO2/Y2O3, Sc2O3 + MgO, and Ta2O5 + TiO2 were used and compared with each other in transmittance, reflectance, full width at half maximum (FWHM), physical thickness, optical thickness, geometric thickness, and incident angles by the software [1].

摘要： Snails’ protection is essential because this species is to maintain a balanced ecology of water sources. They occur in rivers as well as ponds and balance the pH level of water. But these sources of water are contaminated by effluents, pollutants, acid rain, particulates, biological wastes etc. They can change the pH of water. Water is absorber of carbon dioxide and it converts carbon dioxide into carbonic. Other above mentioned wastes also increase the concentration of H+ ions in water. They produce hostile environment for snails. The outer part of snails is made of CaCO3. It produces chemical reaction in acidic medium and corrosion reaction is accelerated, and thus deterioration starts on the surface of snails. This medium makes their survival become miserable. For this work, corrosion of the snails’ study in the pH values of water is 6.5 in H2CO3 environment. The corrosion rates of snails were calculated by gravimetric methods and potentiostat technique. Aloe Vera was used for corrosion protection in acidic medium. The surface adsorption phenomenon was studied by Langmuir isotherm. Aloe Vera formed thin surface film on the interface of snails which adhered with chemical bonding. It was confirmed by activation energy, heat of adsorption, free energy, enthalpy and entropy. The results of surface coverage area and inhibitors efficiency indicated that Aloe Vera developed a strong protective barrier in the acidic medium.

摘要： The tuneable band gap property of Cadmium-sulphur-selenide (CdS1–xSex) thin film makes it an appropriate material for a wide range of optoelec-tronic applications and this has aroused a lot of interest. In this paper, we report the study of Cadmium-sulphur-selenide (CdS1–xSex) thin films, successfully grown on commercial glass slide substrate by the chemical bath deposition technique. The effect of selenium content (x value) on the structural, and some optical properties have been studied. The bath solution contained cadmium acetate dehydrate [Cd(CH3COO)2·2H2O], so-dium selenosulphate [Na2SeSO3] and thiourea [CS(NH2)2] were used as the sources of Cd2+, Se2﹣ and S2+, respectively. Tartaric acid (C4H6O6) was used as a complexing agent. The pH of the solution was adjusted to 12 by drop-wise addition of ammonia. The bath temperature was kept at 90°C for a deposition time of 1 hour. Post deposition annealing processes of the thin films were performed in a furnace at a temperature of 400°C for two hours. Both as-deposited and annealed films were characterised by Powder X-Ray Diffraction, Scanning Electron Microscopy, UV-Visible Optical Absorption Spectroscopy and Energy Dispersive X-Ray Analysis. Optical absorption data analysis indicates that direct allowed transitions occur in the films. The band gap of the as-deposited CdS1–xSex decreased linearly from 2.34 eV to 1.48 eV, with increasing selenium content, and in the annealed samples, decreased from 1.84 eV to 1.36 eV. X-ray diffrac-tion measurements revealed, that pure CdS, and CdSe had mixed hexago-nal and cubic phases. All the remaining ternary compounds were com-posed of cubic CdS and hexagonal CdSe phases. The annealed samples showed well defined and more intense peaks, suggesting an improvement in crystallinity. The average grain size increased slightly with increasing selenium content. SEM micrographs showed that the films were compact with a smooth texture and good coverage across the entire area of the substrate.

摘要： Objectives. The aim of this study was to investigate the effects of orthopaedic soles on the body posture. Methods. Forty-eight runners (21 men and 28 women) maintained a standing-up position on both feet with bare feet with neutral soles and orthopedic soles which contained bilaterally a podiatrist element of 3 mm height behind the metatarsal heads (Metatarsal Retro Capital Bar, MRCB). Stabilometric, plantar pressure and kinematic data in the sagittal plane on both sides were measured at 40 and 60 Hz, respectively. The position of the center of pressure on the anteroposterior axis (YCoP), the forefoot plantar pressure (FPP) and the anteroposterior position of the knee (Yk), the hip (YH), the shoulder (YS) and the ears (YE) with respect to the vertical axis passing through the joint of the ankle were determined for each experimental condition. Findings. The addition of a MRCB orthopedic element induced in backward displacement of CoP, hip, shoulder and ears (p CoP and FPP changes were significantly correlated with YH, YS and YE changes (p Conclusion. These results suggest that the addition of an orthopedic element located behind the metatarsal heads influences the overall position of the body and can help podiatrist in the care of their patients.

摘要： Uniaxial stress is a powerful tool for tuning exciton emitting wavelength, polarization, fine-structure splitting (FSS), and the symmetry of quantum dots (QDs). Here, we present a technique for applying uniaxial stress, which enables us in situ to tune exciton optical properties at low temperature down to 15 K with high tuning precision. The design and operation of the device are described in detail. This technique provides a simple and convenient approach to tune QD structural symmetry, exciton energy and biexciton binding energy. It can be utilized for generating entangled and indistinguishable photons. Moreover, this device can be employed for tuning optical properties of thin film materials at low temperature.

摘要： We present the feasibility study of nonlinear dielectrics for the energy storage applications. Corona deposition of electric charges to the surface of thin films of highly polarizable organic molecules (dielectrophores) shows that the electric field inside the dielectric has a highly nonlinear response. The stored energy densities are superior to the polypropylene films, measured for the comparison, and at least comparable to the current electrochemical batteries. These results make us believe that the dielectrophores-based electrostatic capacitors can revolutionize the energy storage market.

摘要： We improved the photovoltaic properties of Cu_2O-based heterojunction solar cells using n-type oxide semiconductor thin films prepared by a sputtering apparatus with our newly developed multi-chamber system. We also obtained the highest efficiency(3.21%) in an AZO/p-Cu_2O heterojunction solar cell prepared with optimized pre-sputtering conditions using our newly developed multi-chamber sputtering system. This value achieves the same or higher characteristics than AZO/Cu_2O solar cells with a similar structure prepared by the pulse laser deposition method.

摘要： 体系结构和负载平衡策略是影响并行处理系统性能的两个重要因素.基三分层互连网络(THIN)是一种具有高可扩展性、高层次性和低网络复杂度的并行处理体系结构.针对THIN中的负载平衡问题,提出一种分布式控制、发送者驱动的动态负载平衡算法,该算法能够根据THIN的结构特点和负载失衡的实际情况,将负载迁移目标节点的搜索范围从低层THIN向高层THIN逐层扩展,并借助消息传递机制、向量负载指数和负载迁移因子提高负载平衡的效率和合理性.实验结果证明该算法能有效提高THIN系统处理计算密集型任务的性能.

摘要： 体系结构和负载平衡策略是影响并行处理系统性能的两个重要因素.基三分层互连网络(THIN)是一种具有高可扩展性、高层次性和低网络复杂度的并行处理体系结构.针对THIN中的负载平衡问题,提出一种分布式控制、发送者驱动的动态负载平衡算法,该算法能够根据THIN的结构特点和负载失衡的实际情况,将负载迁移目标节点的搜索范围从低层THIN向高层THIN逐层扩展,并借助消息传递机制、向量负载指数和负载迁移因子提高负载平衡的效率和合理性.实验结果证明该算法能有效提高THIN系统处理计算密集型任务的性能.

摘要： 体系结构和负载平衡策略是影响并行处理系统性能的两个重要因素.基三分层互连网络(THIN)是一种具有高可扩展性、高层次性和低网络复杂度的并行处理体系结构.针对THIN中的负载平衡问题,提出一种分布式控制、发送者驱动的动态负载平衡算法,该算法能够根据THIN的结构特点和负载失衡的实际情况,将负载迁移目标节点的搜索范围从低层THIN向高层THIN逐层扩展,并借助消息传递机制、向量负载指数和负载迁移因子提高负载平衡的效率和合理性.实验结果证明该算法能有效提高THIN系统处理计算密集型任务的性能.

摘要： 体系结构和负载平衡策略是影响并行处理系统性能的两个重要因素.基三分层互连网络(THIN)是一种具有高可扩展性、高层次性和低网络复杂度的并行处理体系结构.针对THIN中的负载平衡问题,提出一种分布式控制、发送者驱动的动态负载平衡算法,该算法能够根据THIN的结构特点和负载失衡的实际情况,将负载迁移目标节点的搜索范围从低层THIN向高层THIN逐层扩展,并借助消息传递机制、向量负载指数和负载迁移因子提高负载平衡的效率和合理性.实验结果证明该算法能有效提高THIN系统处理计算密集型任务的性能.

摘要： 体系结构和负载平衡策略是影响并行处理系统性能的两个重要因素.基三分层互连网络(THIN)是一种具有高可扩展性、高层次性和低网络复杂度的并行处理体系结构.针对THIN中的负载平衡问题,提出一种分布式控制、发送者驱动的动态负载平衡算法,该算法能够根据THIN的结构特点和负载失衡的实际情况,将负载迁移目标节点的搜索范围从低层THIN向高层THIN逐层扩展,并借助消息传递机制、向量负载指数和负载迁移因子提高负载平衡的效率和合理性.实验结果证明该算法能有效提高THIN系统处理计算密集型任务的性能.

摘要： 体系结构和负载平衡策略是影响并行处理系统性能的两个重要因素.基三分层互连网络(THIN)是一种具有高可扩展性、高层次性和低网络复杂度的并行处理体系结构.针对THIN中的负载平衡问题,提出一种分布式控制、发送者驱动的动态负载平衡算法,该算法能够根据THIN的结构特点和负载失衡的实际情况,将负载迁移目标节点的搜索范围从低层THIN向高层THIN逐层扩展,并借助消息传递机制、向量负载指数和负载迁移因子提高负载平衡的效率和合理性.实验结果证明该算法能有效提高THIN系统处理计算密集型任务的性能.

摘要： 本申请提供一种基于Thin‑LUN的存储空间配置方法，该方法应用于存储系统，该方法包括：获取存储系统的Thin‑LUN中各逻辑地址块的逻辑地址映射的更新频率；按照更新频率的大小顺序将逻辑地址映射划分成不同等级的更新频段的逻辑地址映射区段；将Thin‑LUN对应的物理存储空间划分成多个存储空间片区，多个所述存储空间片区包括若干个固定存储空间片区，各所述固定存储空间片区与各逻辑地址映射区段具有映射关系，该方法可减少由于写入频率差异大的数据在碎片整理时的数据移动次数，降低碎片产生概率，减小碎片数量，并且可提高存储系统的读写性能和使用寿命。

摘要： 本申请提供一种基于Thin‑LUN的存储空间配置方法，该方法应用于存储系统，该方法包括：获取存储系统的Thin‑LUN中各逻辑地址块的逻辑地址映射的更新频率；按照更新频率的大小顺序将逻辑地址映射划分成不同等级的更新频段的逻辑地址映射区段；将Thin‑LUN对应的物理存储空间划分成多个存储空间片区，多个所述存储空间片区包括若干个固定存储空间片区，各所述固定存储空间片区与各逻辑地址映射区段具有映射关系，该方法可减少由于写入频率差异大的数据在碎片整理时的数据移动次数，降低碎片产生概率，减小碎片数量，并且可提高存储系统的读写性能和使用寿命。

摘要： 本发明提出了一种实现thin卷和thick卷共用存储空间的方法，存储空间预先配置有至少一个thick卷，方法包括：在存储空间中创建至少一个thin卷；根据预先配置的写入策略，确定是否允许thin卷执行写入操作；根据预先配置的创建策略，确定是否允许在存储空间中创建新的thick卷；当存储空间中的thick卷执行写入操作时，始终允许该写入操作。本发明能够使得thin卷和thick卷共享同一存储空间，起到了节约资源的技术效果。