农村税费改革背景下推进农业水价改革的政策建议和工作要点

一、两点政策建议 1.整合财政资源,改变补助方式,加大对农田水利基础设施的投入力度,建立可以持续提高农业综合生产能力的"惠农"长效机制 中央对解决"三农"问题的决心很大,近几年来财政支农资金如农业综合开发、水利建设、水土保持、粮食补贴和良种补贴等中央和各级财政对农村、农民和农业生产的补贴与支持的力度逐年加大.     

计算机安全网络对策

本文主要针对计算机安全网络设置了一种有效的安全机制,对计算机网络安全的维护具有一定的指导意义。     

海韵轻灵:青岛国际帆船中心

第29届奥林匹克运动会青岛国际帆船中心（以下简称“青岛国际帆船中心”）为奥运国际投标项目。在竞标中澳大利亚COX设计集团及北京市建筑设计研究院联合体中标，并共同完成初步设计及施工图设计，项目正处于施工中。     

Energy Confinement of both Ohmic and LHW Plasma on EAST

Study on the characters of energy confinement in both ohmic and Lower Hybrid Wave (LHW) discharges on EAST is conducted and the linear ohmic confinement (LOC), saturated ohmic confinement (SOC) and improved ohmic confinement (IOC) regimes are investigated in this paper. It is observed that an improved confinement mode characterized by both a drop of Dα line intensity and an increase in line average density can be triggered by a gas puffing pulse.     

Realization of minute-long steady-state H-mode discharges on EAST

In the 2016 EAST experimental campaign,a steady-state long-pulse H-mode discharge with an ITER-like tungsten divertor lasting longer than one minute has been obtained using only RF heating and current drive,through an integrated control of the wall conditioning,plasma configuration,divertor heat flux,particle exhaust,impurity management,and effective coupling of multiple RF heating and current drive sources at high injected power.The plasma current (Ip ～ 0.45 MA) was fully-noninductively driven (Vloop ＜ 0.0 V) by a combination of ～2.5 MW LHW,～0.4 MW ECH and ～0.8 MW ICRF.This result demonstrates the progress of physics and technology studies on EAST,and will benefit the physics basis for steady state operation of ITER and CFETR.     

Analysis of electron temperature,impurity transport and MHD activity with multi-energy soft x-ray diagnostic in EAST tokamak

A new edge tangential multi-energy soft x-ray(ME-SXR) diagnostic with high temporal(≤ 0.1 ms) and spatial(~1 cm) resolution has been developed for a variety of physics topics studies in the EAST tokamak plasma. The fast edge electron temperature profile(approximately from r a~ 0.6 to the scrape-off layer) is investigated using ME-SXR diagnostic system. The data process was performed by the ideal ‘multi-foil' technique, with no priori assumptions of plasma profiles. Reconstructed ME-SXR emissivity profiles for a variety of EAST experimental scenarios are presented here for the first time. The applications of the ME-SXR for study of the effects of resonant magnetic perturbation on edge localized modes and the first time neon radiating divertor experiment in EAST are also presented in this work. It has been found that neon impurity can suppress the 2/1 tearing mode and trigger a 3/1 MHD mode.     

Primary research of heat flux deposition pattern on the surface of HT-7 movable limiter

This paper presents a method of characterizing the heat flux deposition pattern on HT-7 movable limiter, a new component in the spring experimental campaign of year 2006. A new modeling establishment combines with heat transfer simulation with ANSYS code, and a shot of long pulse discharge is chosen with small radius 265 mm of movable limiter, which is 5 mm smaller than that of the main toroidal limiters. Both parallel and perpendicular heat flux are taken into account and different ratios of them are also tested in simulations. The simulation temperature values match well with the results of the IR-camera. Temperature distribution shows that ?_||/?_⊥ = 5 is quite suitable in HT-7 device, and the maximum heat flux is about 10 MW/m² and average heat flux is about 5 MW/m² on the movable limiter. This method can be also used in other tokamak devices with limiter configuration and circular cross-section shape.     

液氮温度下JX-6型椰壳炭的性能测试

活性炭是NBI低温吸附泵吸附面的关键组成部分,其性能是决定NBI低温泵抽气性能的关键因素之一.本文选取JX-6型椰壳活性炭,用全自动比表面积及孔径分析仪(ASAP2020)在液氮温度下对其性能进行了测试,并对实验数据进行了分析.实验结果表明,该活性炭具有良好的孔隙结构和较强的吸附性能,其最大吸附量达到252 cm3/g STP.为进一步研究NBI低温泵的低温吸附抽气提供了理论依据.     

我国农业装备发展趋势及战略研究

一、我国农业装备发展趋势、市场分析及预测 1.我国农业装备发展需求 目前,我国农业生产正处在传统与现代技术并存且向现代农业转变的加速期,农业机械化进入快速发展的战略机遇期,总体进入工业反哺农业、加速建设现代农业的新阶段.国家实行了一系列积极有效的惠农政策,对农业和农机的重视、支持、保护,力度加大.