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为确保医院营养膳食科的食品安全,探索HACCP体系在科室日常餐饮加工工作中的建立和应用,文章以中医附院营养膳食科加工操作区作为研究对象,建立科室餐饮加工过程中的HACCP体系及应用准则,确定对原料采购、初加工、熟加工、分发、清洗等多个方面进行危害分析,确定每个环节的关键控制点,制定出详细的HACCP计划,有效控制餐饮加工中的危害因素。 相似文献
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航空煤油输送管线的防腐技术中国石化总公司哈尔滨炼油厂(150056)张尔东黑龙江省冶金研究所(150040)姜国文1前言目前,随着航空事业的发展,航空煤油的需求量愈日剧增。为了降低运输费用,采用管输的办法将燃料油从炼油厂直接输送到飞机厂油库是一种简便... 相似文献
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A high performance CMOS band-gap voltage reference circuit that can be used in interface integrated circuit of microsensor and compatible with 0. 6 μm ( double poly) mix process is proposed in this paper. The circuit can be employed in the range of 1. 8 - 8 V and carry out the first-order PTAT ( proportional to absolute temperature) temperature compensation. Through using a two-stage op-amp with a NMOS input pair as a negative feedback op-amp,the PSRR ( power supply rejection ratio) of the entire circuit is increased,and the temperature coefficient of reference voltage is decreased. Results from HSPICE simulation show that the PSRR is - 72. 76 dB in the condition of low-frequency,the temperature coefficient is 2. 4 × 10 -6 in the temperature range from - 10 ℃ to 90 ℃ and the power dissipation is only 14 μW when the supply voltage is 1. 8 V. 相似文献
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