操作系统中进程同步的实现

进程同步包括进程的互斥和进程的同步两个方面,是操作系统管理共享资源的一种手段。对《操作系统》课程的进程同步教学问题进行了讨论,举例分析了通过P、V操作实现进程的同步与互斥的方法。     

我国尿素废水处理现状分析

论述了我国尿素工艺废液处理技术的特点和现状,从设计、操作、管理方面分析了尿素废水回收利用存在问题的原因,从资源综合利用和环境保护的角度提出了尿素废水治理相关措施。     

局部修复钢筋混凝土柱的力学性能研究

对采用不同修复材料的轴心受压局部修复钢筋混凝土柱的力学性能进行了实验研究和ANSYS非线性有限元模拟分析,研究了修复材料与修复柱本体浊凝土的弹性模量比n,强度比α,修复柱修复时的卸载程度等因素对局部修复后钢筋混凝土柱力学性能的影响,提出了修复材料与修复柱本体混凝土的弹性模量与n是导致局部修复钢盘混凝土柱力学性能不相容的最主要因素,弹性模量比n与强度比α共同决定修复柱的极限承载力。     

新经济时期人才资源的流动配置机制及其宏观调控

在分析了新经济时期人才资源特征的基础上,运用经济学分析工具对市场经济条件下人才资源的流动配置规律进行了探索,为政府、地获企业更好地吸引、开发和利用宝贵的人才资源提供了一睦有重要参考价值的理论根据,明确指出,要使我国地区经济平衡协调发展以及顺利实现西部大开发战略目标,必须尽快运用政策手段加强对人才资源流动配置的宏观调控,并提出了相应的政策建议。     

有色金属矿山酸性废水处理技术及其比较优化

概述了有色金属矿山酸性废水来源、特点和现有处理技术,重点介绍了几种常用和有应用前景的处理工艺;通过分析比较,筛选出高密度石灰法（HDS）作为废水处理达标排放的较佳工艺,生物法（硫化还原和氧化处理）与铁屑置换作为回收有价金属并使废水回用的较佳工艺,为企业选用提供科学依据。     

A Cysteine-Rich Protein,SpDIR1L,Implicated in S-RNase-Independent Pollen Rejection in the Tomato (Solanum Section Lycopersicon) Clade

Tomato clade species (Solanum sect. Lycopersicon) display multiple interspecific reproductive barriers (IRBs). Some IRBs conform to the SI x SC rule, which describes unilateral incompatibility (UI) where pollen from SC species is rejected on SI species’ pistils, but reciprocal pollinations are successful. However, SC x SC UI also exists, offering opportunities to identify factors that contribute to S-RNase-independent IRBs. For instance, SC Solanum pennellii LA0716 pistils only permit SC Solanum lycopersicum pollen tubes to penetrate to the top third of the pistil, while S. pennellii pollen penetrates to S. lycopersicum ovaries. We identified candidate S. pennellii LA0716 pistil barrier genes based on expression profiles and published results. CRISPR/Cas9 mutants were created in eight candidate genes, and mutants were assessed for changes in S. lycopersicum pollen tube growth. Mutants in a gene designated Defective in Induced Resistance 1-like (SpDIR1L), which encodes a small cysteine-rich protein, permitted S. lycopersicum pollen tubes to grow to the bottom third of the style. We show that SpDIR1L protein accumulation correlates with IRB strength and that species with weak or no IRBs toward S. lycopersicum pollen share a 150 bp deletion in the upstream region of SpDIR1L. These results suggest that SpDIR1L contributes to an S-RNase-independent IRB.     

Microstructural and dynamic oscillatory aspects of yogurt as influenced by hydrolysed guar gum

The objective of the current study was to explore the influence of crude, purified and hydrolysed guar gum at low and high concentrations on gel structure stability of yogurts at 4 °C throughout 21 days of storage. The rheology and microstructure of yogurts had been perceived by Bohlin rheometer (Malvern Instrument, UK) and cryo‐scanning electron microscopy (Cryo‐SEM), respectively. The viscoelastic behaviour of yogurts characterised at 25 °C exhibited weak gel structural properties (G? > G?). Cryo‐SEM had been used for microstructural image processing. The acidic and enzyme hydrolysed guar gum at low (0.3%) and high (1%) concentrations led to yogurt gels with fine‐stranded microstructure, while gelation with crude, purified and basic hydrolysed guar gum demonstrated diverse behaviour of depletion flocculation, visually observed even at low concentrations of crude guar gum (0.1%) as a thin layer of phase‐separated material. Conclusively, guar gum in its hydrolytic form enhances better structural and rheological properties.     

二维时间延迟积分红外图像实时增强处理技术

分析了热像仪输出图像的特征,针对非制冷红外焦平面阵列探测器图像对比度较差的问题,提出一种既能有效增强红外图像又能避免通常多帧累加造成边缘模糊的二维时间延迟积分技术,并介绍了具体的硬件实现方法。利用该技术能完成对红外图像的实时处理,且图像增强效果明显。     

城市污泥资源化利用途径探讨

污泥对环境有危害,同时污泥也也含有大量的资源,若能正确的利用污泥,不仅能化危害为资源,又保护了环境和自然资源。本文通过比较不同的污泥处置方法,探讨污泥资源化利用方法,希望能为城市污泥处置寻找合适的方法。     

氯离子诱发钢筋混凝土结构局部修补的电化学不相容机理分析

本文用极化曲线图全面解释了氯离子诱发钢筋腐蚀的钢筋混凝土结构局部修补的电化学不相容机理,得出修补区和原混凝土区间的腐蚀电位差是结构局部修补所引起的电化学不相容的根本原因。分析表明,选用密实度较高、电阻率较大的修补材料有助于消除结构局部修补所引起的电化学不相容现象。