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本文介绍Y802型烘箱温度检定方法的改进。即由人工操作检测改为电控自动巡回检测。在此改进中。采用了先进技术如:数显温度调节仪与传感器等元件。提高了烘箱测温,控温及使用功能。 相似文献
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介绍了Y802型烘箱温度检定方法的改进,即由人工操作检测改为电控自动巡回检测。改进中,采用了先进技术原件如:数显温度调节仪与传感器等。提高了烘箱测温,控温及使用性能。 相似文献
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通过试验及生产实践,对酱黄瓜酸度、盐度和白利糖度测定的抽样方法作一些调整,由原来每个样品抽取300-500克酱黄瓜,改为只抽取酱黄瓜汁液5-10克。结果表明,两种不同的抽样方法的检测结果比较一致,误差很小。在实际使用中,我们一直采用改进后的抽样方法对产品进行质量控制,达到了节省生产成本和提高工效的目的。 相似文献
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卷烟纸标准修标会于今年3月21-22日在浙江嘉兴召开,这次会议是第二次修标的第四次工作会议,会议通过了第二次卷烟纸修订标准。卷烟纸标准第一次修标是在1998年,修订标准时,将采样方式作了改变,从平张改为盘纸上采集试样,试样由横向采取改为纵向采取,这样检测数据接近实际情况,并增加了透气度变异系数指标。第二次修标,又对技术指标进行了修订,产品定为A、B、C3个等级,定量未作规定(因个别烟支需40g/m^2的卷烟纸,只规定正负范围)。 相似文献
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介绍了洗瓶机,杀菌机的技术参数,并对其能耗进行了分析,及改为直接加热的可行性进行了分析,改为直接加热后全年可节约费用23.5万元。 相似文献
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原松头缺嘴检测器对于烟支外表面有一定的影响,且烟支误剔除率较高。改进后松头缺嘴检测器由接触式的电容检测改为非接触式的红外线检测,提高了在线检测精度,解决了检测器烟支误剔除现象。 相似文献
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美国通过实施严格、科学、合理的稻米分级标准和采用先进的检测技术来保证大米的质量达到出口要求,从而赢得市场的做法为我国稻米生产和贸易提供了有益的借鉴.介绍了美国稻米质量的内涵;稻米外观品质、内在品质及检测技术;美国大米的分级标准;稻米卫生质量标准及检测技术;农药残留检测技术.指出面对激烈的竞争,我国惟有完善稻米标准,加大投入,提高检测水平,才能突破技术壁垒和绿色壁垒,实现由稻米生产大国向稻米强国的转变. 相似文献
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张力自动控制系统以最新的传感器作为检测装置,以可编程控制器作为数据处理核心,利用变频器控制传动系统动力电机转速,张力变化体现在弹簧辊或者摆动辊的位移上,将位移变化转换成控制器可接受的信号,这个信号的变化就体现着纸的张力的变化情况,而控制器就是通过检测这个信号的变化情况来调节变频器的输出频率,控制两个动力点电机的速度差,从而控制生产线上纸的张力大小基本保持在要求范围内。 相似文献
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Tencel/真丝交织物的染整工艺研究 总被引:4,自引:0,他引:4
用L16(4^5)正交法优选了Tencel/真丝交织物的前处理工艺,比较了直接染料和双活性基活性染料对真丝/Tencel纤维同色性染色的影响,并对Tencel纤维采用酸性纤维素酶进行去原纤化和整理剂进行防原纤化加工。测定了织物风格的变化。 相似文献
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牛奶质量安全快速检测新技术 总被引:1,自引:0,他引:1
<正> 在经济全球化背景下,牛奶制品也已步入全球化时代。人口众多的中国经济快速发展,中国牛奶制品进出口贸易总量的变化对国际奶类食品贸易影响越来越大。中国奶类食品质量与安全得到政府的高度重视。随着人们生活质量的提高,奶类人均消费量增长加快,国民的食品安全意识明显增强。国际上也对中国各类出 相似文献
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电容检测纱线传感器转换特性对纱线不匀率测试的影响 总被引:2,自引:1,他引:1
讨论了纱线测试中受电容检测纱线传感器转换特性的非线性影响,测得的条干不匀率值与纱线的实际条干不匀率值之间的差异,从理论上估计了纱线在不同的电容检测槽内测试时,由于其截面充满系数不同而引起的相对差异,并用试验数据加以验证。 相似文献
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《Contact lens & anterior eye》2021,44(2):398-430
Contact lenses in the future will likely have functions other than correction of refractive error. Lenses designed to control the development of myopia are already commercially available. Contact lenses as drug delivery devices and powered through advancements in nanotechnology will open up further opportunities for unique uses of contact lenses.This review examines the use, or potential use, of contact lenses aside from their role to correct refractive error. Contact lenses can be used to detect systemic and ocular surface diseases, treat and manage various ocular conditions and as devices that can correct presbyopia, control the development of myopia or be used for augmented vision. There is also discussion of new developments in contact lens packaging and storage cases.The use of contact lenses as devices to detect systemic disease has mostly focussed on detecting changes to glucose levels in tears for monitoring diabetic control. Glucose can be detected using changes in colour, fluorescence or generation of electric signals by embedded sensors such as boronic acid, concanavalin A or glucose oxidase. Contact lenses that have gained regulatory approval can measure changes in intraocular pressure to monitor glaucoma by measuring small changes in corneal shape. Challenges include integrating sensors into contact lenses and detecting the signals generated. Various techniques are used to optimise uptake and release of the drugs to the ocular surface to treat diseases such as dry eye, glaucoma, infection and allergy. Contact lenses that either mechanically or electronically change their shape are being investigated for the management of presbyopia. Contact lenses that slow the development of myopia are based upon incorporating concentric rings of plus power, peripheral optical zone(s) with add power or non-monotonic variations in power. Various forms of these lenses have shown a reduction in myopia in clinical trials and are available in various markets. 相似文献
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M. Esteki J. Regueiro J. Simal‐Gndara 《Comprehensive Reviews in Food Science and Food Safety》2019,18(2):425-440
Deliberate adulteration of food products is as old as food processing and production systems. Food adulteration is occurring increasingly often today. With globalization and complex distribution systems, adulteration may have a far‐reaching impact and even adverse consequences on well‐being. The means of the international community to confront and solve food fraud today are scattered and largely ineffective. A collective approach is needed to identify all stakeholders in the food supply chain, certify and qualify them, exclude those failing to meet applicable standards, and track food in a real time. This review provides some background into the drivers of fraudulent practices (economically motivated adulteration, food‐industry perspectives, and consumers’ perceptions of fraud) and discusses a wide range of the currently available technologies for detecting food adulteration followed by multivariate pattern recognition tools. Food chain integrity policies are discussed. Future directions in research, concerned not only with food adulterers but also with food safety and climate change, may be useful for researchers in developing interdisciplinary approaches to contemporary problems. 相似文献