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This paper mainly studies how investors invest in funds to obtain high returns while avoiding risks.Firstly,from the per......
Study of the Optimization and Adjustment ofthe IndustrialStructure Subjected to Water Resource in th
Since the 1990s, the Yellow River stream has been temporarily interrupted for several years, which affects the developm......
Preparation and luminescence properties of a white emitting long afterglow luminous fiber based on F
A ternary luminous fiber with white light emitting was prepared. The fiber combined emission from Sr+2ZnSi_2O_7:Eu~(2+),......
Prenatal and early life home environment might be related to children’s asthma or allergic diseases later in life.A cro......
Objective There is little knowledge on whether there is clustering of inflammatory biomarkers, such as C-reactive protei......
China’s economic reform has progressed to setting up a socialist market economy. Since 1994, a series of reform measur......
Effects of urinary protein level on major adverse cardiac and cerebrovascular event and all-cause de
Objective To study the effect of urinary protein level on major adverse cardiac and cerebrovascular event(MACCE)and all-......
White organic light-emitting diodes based on a combined electromer and monomer emission in doubly-do
We report on white organic light-emitting diodes(WOLEDs) based on polyvinylcarbazole(PVK) doped with 1,1-bis((di-4-tolyl......
Modal cutoff in rare-earth-doped photonic crystal fibers with multi-layer air-holes missing in the c
The various mode effective indices of the doped photonic crystal fibers (PCFs) are compared, the mode field distribution......
The main science advance of earthquake monitoring and prediction in China ZH ANG Guo- min (2 )…Seismic tectonic model o......
Flat broadband slow light with low dispersion in coupled resonator optical waveguide based on one-di
By introducing multiple defect layers in one dimensional(1D) photonic crystal(PC), the broadband slow light with low dis......
A fully integrated LED driver based on a current mode PWM boost DC-DC converter with constant output current is proposed......
A novel dual-directional silicon controlled rectifier(DDSCR) device with embedded PNP structure(DDSCR-PNP) is proposed f......
Energy transfer between Ce~(3+) and Sm~(3+) in Zn_2GeO_4 phosphor with the native defects for light-
A series of Ce~(3+), Sm~(3+)-doped Zn_2GeO_4 phosphors are prepared by the solid-state reaction. A blue photoluminescenc......
The reduction of mixtures of mononuclear Au(I)and Ag(I) phosphine halide complexes with sodium,boronhydride in differen......
To achieve good metabolic control in diabetes and keep long term, a combination of changes in lifestyle and pharmacologi......
Refractive index inhomogeneity is one of the important characteristics of optical coating material, which is one of the ......
Microwave-absorbing properties of iron fibers can be adjusted by their aspect ratio. This paper presents several modific......
The global financial crisis originated in the United States has incurred disastrous consequences on Russia’s resource e......
Influence of etching current density on the morphology of macroporous silicon arrays by photo-electr
Macroporous silicon arrays(MSA) have attracted much attention for their potential applications in photonic crystals,sili......
In the work of numerical control reformation of general machine tool,the installation and debugging of machine tool is a......
The Shanghai Synchrotron Radiation Facility (SSRF) is a low emittance third-generation synchrotron radiation light sourc......
An analytical method is proposed for the direct determination of Cd in seawater by differential pulse anodic stripping ......
This study investigates the initialization of nonlinear free-surface simulations in a numerical wave flume.Due to the mi......
Plasma Vitamin D Levels And Vitamin D Receptor Polymorphisms Are Associated with Survival of Non-sma
Objective:Vitamin D and its receptor(VDR) involve in multiple cellular processes and play an important role in the initi......
Utility based resource allocation strategy in multi-cell orthogonal frequency-division multiplexing (OFDM) system plays ......
Combining with the characteristic of the fuzzy control and the neural network control(NNC), a new kind of the fuzzy neu......
Drilling end-effector is a key unit in autonomous drilling robot.The perpendicularity of the hole has an important influ......
Structure and Fluorescence Property of a 2D Macrometallacycle Supramolecular Network [Zn2(2-mBIM)2(S
本文通过对荣华二采区10...
[摘 要] 鉴于火电机组直接空冷技术的广泛运用，针对托电三、四期直接空冷系统夏季出现的环境温度高、风向多变、热风回流等问题，对......
文章针对某散货船发电柴油机曲轴异常磨损问题,对曲轴修理工艺进行相关研究。首先介绍发电柴油机组的结构组成和曲轴存在的问题;接......
移植于西方的中国近代特殊教育在其制度化进程中呈现出超常规发展的态势,并进而初步建立了其基本的制度框架,为此后的发展奠定了重......
阐述了ABR系统中酸解过程的特征及调控措施.在酸化初期,各隔室pH逐级升高,COD和VFA逐隔室降低,具有明显的两段厌氧消化的特点.完全......
针对硬件IP核的速度和面积两大性能指标,提出了基于可变执行周期的多周期乘法器设计思想,设计出一款适用于32位嵌入式微处理器的乘......
得到了最小折数纵横扩张的判别准则.针对4-正则图的平面嵌入的纵横扩张的特殊性,给出了它的最小折数纵横扩张判别准则.......
专业结构调整与专业认证是实施“质量工程”建设的首要内容。医学领域的专业设置和专业结构调整涉及到学位、执业医师资格考试等问......
图书馆依靠其资源、技术、场所和服务,在教科书编写、课件制作和远程教育服务中发挥着重要作用,这为图书馆直接适用教育目的法定许......
恐怖主义在世纪交替之际成为国际政治舞台上的一个突出现象,'9·11'事件引发的美国反恐怖主义战争,从本质上来说带有&......
介绍了天生桥一级水电站4号机组振摆超标的处理过程,通过对转子圆度调整、定子移位及配重等处理方法,消除了机组振摆超标的缺陷。......
为满足学生GNSS测量实训要求,建设了校园GNSS测量控制网,有利于提高学生动手能力。根据校园地形情况和范围大小,考虑点位之间平均......
针对福建省农村自然环境特征、污染现状以及经济、环境管理水平,总结了多种农村生活污水处理模式,并进行了简单的技术、经济分析,......
利用2006—2018年中国经济政策不确定性指数和A股制造业上市企业数据,分析和检验了经济政策不确定性对企业技术效率的影响及异质性......
[研究意义]目前市场上销售的哺乳装多为宽松家居款,不适合外出工作或参加社会活动,当哺乳期过后就失去使用价值,降低了哺乳期女性......
200 MW褐煤机组在改烧省内烟煤时,进行了改前改后的对比性试验.试验发现,设备不做大的改动,可满足全烧省内烟煤,锅炉效率基本达到......
使用研制的可调压强计、膨胀气体出口装置和恒温系统,实现了对Clement—Desormes装置的改进,使膨胀法测气体比热容比的误差减小到1......
基于多体动力学理论,应用自研柔性多体动力学仿真程序,建立了压气机静叶调节机构的纯刚性以及考虑尺寸公差和运动副间隙、摇臂柔性......
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低压铸造、差压铸造及调压铸造等反重力铸造装备技术已在实际生产中得到广泛应用，但多数此类设备功能单一，无法在同一台设备上实现多......
基于ET2008服装CAD打板系统，对在使用ET2008服装CAD打板过程中的常见问题进行总结，并提出了合理的调整对策。希望能够为服装企业CAD......
通过分析丰城发电厂300 MW机组燃烧设备的结构特点及其运行特性,进行锅炉运行方式的调整,提出了降低飞灰可燃物有效途径,提高了锅......
