【Objective】To study effects of combined stress of high temperature and drought at early filling stage on characteristics of yield and after-heading dry matter production of high-quality japonica rice,to provide theoretical reference for integrated innovation of cultivation technology of high-quality,high-yielding and stress-resistant rice.【Method】High-quality japonica rice Nanjing 9108 and Fengjing 1606 were chosen as materials,four treatments including high temperature and drought（HD）,high temperature with conventional water management（HC）,conventional temperature with drought（CD）and conventional temperature with conventional water management（CK）were set during 1-20 d after heading to study the effects of combined stress of high temperature and drought on rice yield and panicle traits,and after-heading dry matter accumulation and transport at early filling stage.【Result】Grains density,1000-grain weight,seed setting rate,actual yield and harvest index among different treatments was in the order of HD＜HC＜CD＜CK,showing extremely significant difference（P＜0.01,the same below）in seed setting rate and yield among the treatments. Compared with CD and CK,other indexes were not significantly different（P＞0.05,the same below）under HD and HC,which were all significantly different（P＜0.05,the same below）or extremely significantly from CD and CK. Except seed setting rate and1000-grain weight,the difference between CD and CK was not significant. The number of filled grains,filled grains weight,1000-grain weight and seed setting rate on primary and secondary branches were in the order of HD＜HC＜CD＜CK among different treatments,and the proportion of filled grain number and filled grain weight on primary branches showed the opposite trend and were higher than those on secondary branches. The seed setting rate on primary and secondary branches was extremely significantly different among stress treatments. Compared with CD and CK,differences in the number and weight of filled grains under HD and HC were significant or extremely significant,while the differences between CD and CK were not significant. The dry matter accumulation of all stress treatments during different periods after heading appeared as HD＜HC＜CD＜CK,and the dry matter accumulation at 50 d after heading of Nanjing 9108 under HD,HC and CD was 12.9%,10.7% and 2.4% lower than those of CK,respectively. The growth rate of dry matter accumulation increased rapidly at 10-20 d after heading,and turned stable at 30-50 d after heading. Under treatments,dry matter increase rate per panicle decreased as time went on and HD and HC were significantly lower than those in CD and CK. The dry matter transport,transport rate and contribution rate after heading were in the order of HD＜HC＜CD＜CK,with no significant difference between HD and HC,significant difference between CD and CK and extremely significant difference between CD and CK. During growth period after heading,SPAD value and net photosynthetic rate of rice flag leaf decreased,the net photosynthetic rate showed HD＜HC＜CD＜CK among different treatments,while the SPAD value showed the opposite trend. According to path analysis,direct and indirect coefficients of rice yield on primary branches were higher than those on secondary branches and the direct and indirect effects of filled grain weight on primary branches on yield were the largest following by seed setting rate.【Conclusion】In general,combined stress of high temperature and drought,single high temperature stress and single drought stress at 20 d after heading reduce rice yield to different degrees through lowering seed setting rate and the filled grain weight on primary branches has the highest direct and indirect influences on yield. Compared with Nanjing 9108,Fengjing 1606 is insensitive to high temperature and drought. Drought stress mainly reduces panicle filling by shortening grain filling time. High temperature and combined stress of high temperature and drought affect panicle filling by reducing grain filling rate and shortening grain filling time. Therefore,the effects of combined stress of high temperature and drought and single high temperature stress on rice material production characteristics and yield are greater than those of single drought stress.

将绩效管理等同于绩效考核,过于看重考核结果,缺乏计划性,缺乏有效的激励和反馈机制等都是当前高校图书馆绩效管理存在的问题.运用人力资源管理的方法,结合"双一流"建设的要求,构建"双一流"背景下高校图书馆绩效管理体系.

为了响应国家复合型创新型研究生培养要求,西北农林科技大学土木工程学科研究生培养改革势在必行.文章着眼于土木学科研究生实践教育现状,针对研究生规模扩大,现有教育资源难以满足研究生实践教育需求,研究生重理论、轻实践,缺乏吃苦耐劳的实践精神等问题,提出了基于校内科教平台的研究生实践教育新途径:建设工程案例库,加强课堂教学的实践性;以学位论文为导向,积极利用校内实验平台与实训基地;借助校内在建工程,突出实践能力培养;积极参与导师生产项目,开阔视野,旨在提高研究生实践教育质量,从而培养出符合国家需求的复合型创新人才.

目的 老年人工全髋关节置换术与全膝关节置换术后隐性失血的相关分析.方法 选取2018年1月-2019年6月96例北京积水潭医院收治行择期人工全髋关节置换术与全膝关节置换术的老年患者,根据患者术式分为全髋置换组(43例)和全膝置换组(53例).根据术中出血记录及术后引流记录计算围手术期失血量,观察两组患者显性与隐性失血情况,并制定相应的输血策略.结果 两组患者在围手术期失血量以及术前血红蛋白水平比较差异无统计学意义,但全髋置换组在隐性失血量、术后血红蛋白水平方面明显优于全膝置换组(P<0.05);全膝置换组中有20例患者采取术中自体血回输处理,而自体血回输患者的实际红细胞丢失量明显低于未采取自体血回输患者(P<0.05).结论 全膝关节置换术患者在围术期的隐性失血量相对于全髋关节置换术更高,因此需要密切观察患者血液细胞检测结果,制定科学的输血策略,避免贫血等并发症的出现.

目前世界上主要存在两大法系，即大陆法系和英美法系，大陆法系的主要法律表现形式为法典，又称为成文法系。而英美法系主要以判例法为法的主要表现形式，因此又被称为判例法系。虽然大陆法系的主要法律表现形式为成文法，但判例制度仍然存在于大陆法系之中。本文旨在探讨两大法系判例制度不同，并探讨在两大法系互相学习借鉴的背景下我国建立判例制度的必要性。

As the wide band signal application popularizing,traditional ADC based on Nyquist sampling theory is limited, which can be conquered by compressed sensing theory.This paper presents an ADC based on compressed sensing theory,and put forward a calibration method to estimate the mismatch of multipath when reconstructing the original signal from compressed sensing measurement.The whole system is implemented in UMC 180 nm fabrication.It consists multipath to measure the input signal but quantized by a single quantizer.The quantizer is a SAR ADC which can work individually.The object is to design an ADC achieving 160 MHz sampling frequency and 12 bit ENOB with a sub-Nyquist quantizer.The whole system achieves a post-layout 160 MHz 10.25 ENOB with a figure of merit of 110 fJ/conv-step,and occupies 2.08.The SAR ADC achieves a post-layout 40 MHz 10.08 bit with a FOM of 56 fJ/conv-step.The simulation shows the correctness and effectiveness of the system structure and calibration method.

This paper presents a new capacitor array architecture to achieve a 6 bit 550Ms/s energy-efficient SAR with 65nm CMOS, which also takes up smaller area than traditional SAR. The bypass logic is a key feature to speed up the SA algorithm. Dynamic logic is used in the critical path to accelerate the speed. The whole circuit is supplied with 1.2V voltage. Simulation results show that the SAR achieves ENOB of 5.72, power consumption of 3.12mW with sampling rate at 550Ms/s, input frequency at Nyquist frequency.

This paper presents a high‐speed wide‐band continuous‐time (CT ) Delta‐Sigma (Δ‐Σ) modulator .The modulator is modeled in MATLAB SIMULINK with a single‐loop 3rd‐order 4‐bit quantization structure . By modeling non‐ideal factors such as limited OPAMP DC gain ,limited gain bandwidth product (GBW) and excess loop delay (ELD) ,design properties of circuit module are determined .The modulator is designed and implemented in UMC 180 nm process . High‐speed dynamic latch comparator with low‐noise and high‐resolution is designed for quantization .Dynamic element matching (DEM ) module with low latency is included to suppress DAC mismatching .A direct feedforward path is introduced by RPI to compensate for excess loop delay (ELD) .The modulator achieves a pre‐layout 83 dB signal to noise distortion ratio (SNDR) with a figure of merit (FOM ) of 220 fJ/conv‐step and occupies 0 .1 mm2 active area .

A 14-bit 10mW 2MHz BW continuous-time (CT) ΔΣ modulator, implemented in UMC 180nm process, is presented in this paper. High-speed high-resolution low-noise dynamic latch comparator is designed for quantization. A low-latency dynamic element matching (DEM) module is included in consideration of nonlinear mismatching of DAC units. RPI introduces direct feedforward path around the quantizer to compensate for excess loop delay (ELD), which is more efficient in power and area compared to conventional structure. The post-layout simulation achieves a SNDR of 79dB with a FOM of 350fJ/conv-step and occupies 0.1mm2 active area.

This work presents an parallel analog-to-digital converter based on compressive sensing theory to process compressive/sparse signal below Nyquist Sampling Rate. Linear feedback shift registers (LFSR) are adopted to generate a 0/1 pseudo random sequence and a first-order delta-sigma ADC is presented to computes the inner product of random signals in our design. Besides, random sampling is achieved by using switched-capacitor techniques, therefore the random cut-off of switches regulates the random selection of signals by the pseudo random sequence. The system simulation verification results are given in the end of this paper.

Dye is closely related to people's life, it has a " rigid demand" basic attributes. But with the sluggish economic environment, excess production capacity, energy conservation and emissions reduction requirements become stricter and production costs are rising too fast, and many other adverse factors, the development of the dyestuff industry in China is facing a dilemma situation. Author has clearly analysis all kinds of favorable and unfavorable factors in the dye industry development. This paper has predicted the future trend of the dyestuff industry development in China; provided the dye business and how to resolve disadvantageous factors and how the enterprise development with a favorable positive energy and puts forward some suggestions.

<正>在染料企业成本日益上升的今天,利润越来越微小,寻找利润越来越难。为什么盈利变得越来越困难?在利微时代,盈利的机会在哪里?如何寻找利微时代中的利润?你的企业的赢利模式如何?总之一句话,如何提高企业经济效益,成为行业和企业必须关注的课题。1利微时代与染料企业效益提升2012年以来,染料行业受纺织等上游行业的影

<正>2012年以来,我国染料工业受纺织行业严重下滑的影响,需求下降、出口遇阻,市场供大于求,染料工业经济增速持续减缓,下行压力不断增大,染料工业经济运行遇到了前所未有的困难,时至今日虽然趋稳,但依然未有根本性的好转。在这样的背景下,我国染料工业与市场依然在艰难中前行。2012年1-6月染料累计产量约为35.5万(t数据基于中国染料工业协会统计的54家染料企业,下同)预计全年将达到70万t左右,增幅将有所下降。

<正>2011年,令我们骄傲的是4898.9万千升的全国啤酒产量,十连冠,怎能不让人欢呼雀跃!但在脸上洋溢着自豪的同时,利润数字却大跌眼镜。仅举重庆啤酒一例,2011年销售啤酒108.19万千升,量增了7%;营业收入增长13.45%,但归属于母公司的净利润1.54亿,却下滑了57.56%。读到此,你不能不为啤酒行业效益下滑而担忧。2012年中国经济将进入"保8"时代,啤酒业面临的宏

<正>又是一年春来到。在这百花盛开的春天里,草甘膦市场红火一片,有消息传来,草甘膦除草剂供不应求,产销两旺。福华集团一袋袋草甘膦粉剂不断从生产线"流出"后,就立马整箱,一辆辆大货车在外整装待运。以草甘膦为主导产品的福华通达农药科技有限公司迎来了至开工投产以来的最好旺销局面。

The impact of The Industrial Transformation and Upgrading Plan on China's dyestuff industry in 2012 was analyzed.Development trend of China's dyestuff industry was presented.

To introduce China pesticide market in the first half of 2012 in terms of market supply and demand,price,export and market structure.To analyze the market trend in the second half of 2012.

<正>近年来,纳米技术作为一种正在崛起的新技术而受到人们的广泛关注,而纳米材料作为一种新材料也日益受到材料界的青睐。纳米材料特有的光、电、热、磁等性能,能够促进传统建材的改造升级,增加传统建材的新技术含量和应用价值,随着异色纳米涂料、导电、自洁、抗菌防霉纳米涂料、纳米水泥混凝