喷气燃料储存安定性的研究

对喷气燃料的储存安定性进行了探讨,对喷气燃料的氧化机理进行了详细的研究,对常用抗氧剂进行了对比,对喷气燃料的颜色安定性及蒸发损失进行了阐述,并对未来进行了展望。     

地质灾害成因及其勘查方法

本文主要分析了矿山地质灾害的成因以及勘察方法,重点对造成矿山地质灾害的方法以及对矿山地质灾害进行勘察的方法进行了相关的讨论,对矿山地质灾害进行防治,可以将矿山开采的效率进行有效的提升,将生产过程当中的安全性进行保证。通过对勘察方法进行研究,以期保证矿区的正常开采,将开采的效率进行有效的提升。     

人工智能技术在电气自动化控制中的应用思路分析

因为通过对人工智能技术进行运用,不仅能够对其的理论知识学习进行加强,也能够对电气自动化控制的工作进行有效的延伸,促使在其的发展过程中,人工智能技术逐渐成为其的管理手段。而且在电气自动化控制的过程中,通过对人工智能技术进行使用,不仅能够对生产效率进行大幅度的提高,也能够对电气控制的自动化进行实现。所以在模糊的控制基础上,能够对人工智能技术运用过程中所存在的问题进行及时的发现,确保通过模糊控制理论,不断对人工智能技术的运用效果进行强化,从而促使在电气传动中对模糊控制理论的指导作用进行充分的发挥。     

运用Matlab和Autocad软件进行测井曲线数字化

对测井曲线进行数字化是对测井资料进行数字处理的重要环节,本文研究了Matlab、Au-tocad两种不同的软件进行数字化的方法步骤,并对两种方法进行了讨论分析。     

石油化工工艺管道安装质量控制要点分析

石油化工的工程在进行建设的时候,对管道进行安装是一项系统性的工程,所以,对其进行深入的研究是非常重要的。但是,对于现阶段实际的情况而言,石油化工的管道在进行安装的过程当中,还存在非常多的问题,所以,相关的施工单位一定要对石油管道的施工质量不断的进行强化,而且一定要对安装过程当中存在的问题进行深入的分析,一定要及时采取有效的控制方案,避免不按照相关的规范来进行操作,保证石油管道可以稳定的进行开展。对于上述的问题,对当今阶段,石油化工管道在进行安装的时候,比较常见的一些问题以及质量的控制进行了简单的论述。     

利用旧渣油储罐贮存甲醇前的清洗方法

对旧渣油储罐进行清洗的必要性和清洗方法进行了简述,并对储罐内表面金属使用有机溶剂进行清洗的工艺进行初步探讨。     

采用热辐射和热交换对残余应力进行预测和控制

在实验室和工厂进行热钢化平板玻璃生产时,多采用单射流和多射流对成型了的玻璃进行冷却。首先,应该考虑到辐射的转移和残余应力对玻璃的最后部分的影响。三维流体动力学计算模型（计算流体力学）的研发,帮助我们对气体的流动进行分析,并确定钢化过程当中玻璃表层的热交换情况。然后,将结构和应力松弛引入三维有限元模型中进一步进行分析,采用光弹性测量的方法对钢化玻璃表面及周边范围内的残余应力进行测量,这个数值可以对玻璃的钢化厚度进行验证。通过在多射流的设备中进行的分析中发现,温度分布和残余应力都是均匀分布的。最后,采用超声波的新方法来对钢化的残余应力进行测量。采用这种方法进行单射流对钢化玻璃进行冷却实验,得到的实验结果与预测数值相一致。     

气相法合成N-乙基苯胺工艺条件和催化剂的研究

基苯胺的催化剂进行了筛选,找出了活性最好的催化剂。在最佳工艺条件下,对该催化剂进行了稳定性考察,对产品进行了精馏实验。用NH₃-TPD法测定催化剂的表面酸性,并对催化剂的表面活性和酸性进行了关联,确定了苯胺的N-乙基化是在较弱的L酸上进行的。采用工业放大催化剂进行了工业试生产。     

陶瓷产品造型的CAD设计

具体论述利用计算机软件AutoCADR14进行陶瓷产品造型设计的过程 ,并对其造型效果进行展示 ,以及制作成幻灯片进行演示     

井下MWD仪器信号处理及仪器电路设计

无线随钻测量应用到钻井中,对井眼轨迹及其他地质信息进行监测。针对当前MWD设备在数据传输中占用大量资源,提出采用无线传感器进行数据传输并采用无线技术进行数据处理替代传统数据处理工具。为提高开发效率选用C#进行界面开发,选用C语言进行串口通信管理。硬件方面主要进行数据采集与数据测量模块设计。     

1107JC泵轴断裂原因分析

对１１０７ＪＣ泵轴断裂原因进行了分析,结果表明,大尺寸的非金属夹杂和背帽外缘的点焊是引起泵轴过早断裂的主要原因。在分析的基础上提出了预防断裂的措施。     

Textural,Rheological and Sensory Properties and Oxidative Stability of Nut Spreads—A Review

Tree nuts are rich in macro and micronutrients, phytochemicals, tocopherols and phenolic compounds. The development of nut spreads would potentially increase the food uses of nuts and introduce consumers with a healthier, non-animal breakfast snack food. Nut spreads are spreadable products made from nuts that are ground into paste. Roasting and milling (particle size reduction) are two important stages for the production of nut spreads that affected the textural, rheological characteristic and overall quality of the nut spread. Textural, color, and flavor properties of nut spreads play a major role in consumer appeal, buying decisions and eventual consumption. Stability of nut spreads is influenced by its particle size. Proper combination of ingredients (nut paste, sweetener, vegetable oil and protein sources) is also required to ensure a stable nut spread product is produced. Most of the nut spreads behaved like a non-Newtonian pseudo-plastic fluid under yield stress which help the producers how to start pumping and stirring of the nut spreads. Similar to other high oil content products, nut spreads are susceptible to autoxidation. Their oxidation can be controlled by application of antioxidants, using processing techniques that minimize tocopherol and other natural antioxidant losses.     

Performance and emissions analysis on diesel engine fuelled with cashew nut shell biodiesel and pentanol blends

We studied the impact of blending pentanol, a next generation biofuel, with cashew nut shell biodiesel on its performance and emissions characteristics in a constant speed compression ignition engine. Our main objective was to reduce CO, HC, NO _X and smoke emission when fueled with neat cashew nut shell biodiesel and the pentanol blends. Cashew nut shell oil is a byproduct from cashew nut industry. Since it is nonedible, it can be used as a promising alternative. Conventional transesterification process was used to convert the cashew nut shell oil into cashew nut shell biodiesel. Pentanol with 98.4% purity was used as an oxygenated additive. The experiment involved three test fuels: neat cashew nut shell biodiesel (C100), Pentanol blended with cashew nut shell biodiesel by 10% volume (C90P10) and Pentanol blended with cashew nut shell biodiesel by 20% volume (C80P20). The feasibility of using neat biofuel (without adding diesel) was also investigated. Experimental work concluded that the test fuels used in this study does not require any modification in engines. In addition, the combustion of fuels was smooth and there was no physical and visible damage in the engine components when fueled with cashew nut shell biodiesel and the pentanol blends. By adding 10% and 20% of pentanol to cashew nut shell biodiesel, significant reduction in CO, HC, NO _X and smoke emission was observed. In addition, brake thermal efficiency increased marginally with slight reduction in brake specific fuel consumption.     

焦丁粒度对黄磷生产工艺的影响分析

入炉焦丁粒度是电热法黄磷生产节能降耗的关键问题之一。介绍电热法黄磷原料焦丁的作用、质量标准、粒度要求,焦丁粒度与化学还原反应的关系。分析焦丁粒度对黄磷生产消耗及经济技术指标的影响。通过高温副反应对黄磷生产的影响分析,表明必须严格控制入炉焦丁粒度,避免熔池温度上升。     

复合材料锚杆螺纹螺帽接触有限元分析

利用ANSYS大型分析软件,建立属于表面非线性和材料非线性相耦合问题的复合材料锚杆螺纹螺帽联接的弹塑性轴对称接触有限元模型。对复合材料锚杆螺纹螺帽在间隙配合时轴向载荷作用下的应力应变场进行了数值计算。计算结果表明,复合材料锚杆螺纹螺帽联接能够满足煤矿安全生产的强度和刚度要求,为复合材料螺纹螺帽联接的设计提供了理论依据,对复合材料锚杆螺纹螺帽联接在工程实际中的推广使用有着重要的意义。     

AK-Ⅱ型高效螺母松脱液的研制与应用

在确立螺母松脱液松脱效率试验方法的基础上,研制出了一种新型的螺母松脱液.该产品集松脱、清洗、防锈和润滑功能于一体,对螺丝的松脱效率比目前同类产品要高,并且生产原料易得,产品对人体无毒.     

The nutritive value of the Brazil nut oil

The chemical composition of the decorticated Brazil nut in the natural and fat-free state was determined, and the results confirm that this seed contains significant amounts of oil and protein. In three growth experiments carried out in rats, the Brazil nut oil had a nutritive value comparable to that of butterfat and the common table oils, olive oil, cottonseed oil, and corn oil. The use of levels of the Brazil nut oil up to 20% of the diet did not reduce growth or food consumption of rats. Heat treatment of the oil up to 120 min. at 140°C. did not reduce its nutritive value. The coefficient of digestibility of the Brazil nut oil was similar to that of the other oils, fresh and heated. The digestibility of the Brazil nut oil averaged 98% and was not affected by the heat treatment. The data indicate that Brazil nut oil is comparable to other animal and vegetable fats and oils in common use for human consumption. International Cooperation Administration fellow and Research Assistant. INCAP Publication I-150.     

温度检测技术在鲁奇炉灰锁料位检测中的应用

通过对鲁奇炉工况的分析,说明了γ料位计应用于灰锁料位检测存在的不足及难以推广使用的原因,提出了通过在灰锁上安装热电偶,并对检测温度趋势曲线进行分析,确定灰锁料位的方案。当灰锁满时,检测点的温度迅速上升,利用这一特点实现对灰锁料位的确定,并实践证明行之有效。     

氨冷器气阻原因分析及对策

合成氨装置氨冷器发生气阻,严重影响装置安全平稳运行。通过分析气阻原因,制定有效措施,彻底解决设备气阻问题。     

Tree Nut Oils: Chemical Profiles,Extraction, Stability,and Quality Concerns

Tree nuts are globally consumed. Their kernels are calorie‐rich, nutrient‐dense foods and contain several bioactive and health‐promoting components. While some nut crops have expanded through the world since ancient times (almond, hazelnut, walnut), more recently, there has been a parallel development of underexploited promising species (Brazil nut, macadamia, pecan). Nut kernels have high lipid content, ranging from 40% to 80% depending on nut species and varieties. In general, nut oils contain significant proportions of nutritionally and medicinally desirable fatty acids and nutraceutical compounds (sterols, tocopherols, and other phenolics). A considerable genetic variability in oil content and composition is present in nut genetic resources worldwide. This suggests the possibility of different breeding lines focused to enhance oil yields, chemical and quality traits. Regarding extraction, screw‐pressing is suitable to achieve high oil recovery and good quality standards, but seed materials should be conditioned appropriately. Seed moisture content and pressing temperature appear as key variables to enhance oil recovery. This article presents an overview on chemical profiles, mechanical extraction, and quality concerns of oils from the most widely produced tree nut crops. The revision is also aimed at identifying areas where knowledge is insufficient and to set priorities for further research. Practical applications: The review updates and increases knowledge about oils from tree nut genetic resources, encompassing genetic variability and environmental effects on oil yield and compositional traits. It also analyzes findings regarding oil extraction and provides useful insights to establish better conditions for achieving sustainable oil yields and good quality standards.