水分与温度对根霉Q303生长繁殖的影响

根霉曲是采用纯培养技术,将根霉与酵母在麸皮上分开培养后再混合配制而成的.根霉曲具有较强的糖化发酵力,适合各种淀粉质原料小曲酿酒工艺使用.水分和温度是保证根霉Q303菌种质量的关键.在拌麸皮时加45%～50%的水较适宜;制曲过程的品温最好控制在36～38℃;前期干燥温度一般为40～45℃,后期烘干温度可控制在45～50℃.     

Surface modification of austenitic stainless steel with plasma nitriding for biomedical applications

In the present study, plasma nitriding of AISI type 303 austenitic stainless steel (SS) specimens was performed using a microwave system. The nitrided layers were characterized by performing scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and a Vickers microhardness test. The antibacterial activities of the nitrided layers were evaluated. XRD and TEM showed that a single γ_N phase was formed by plasma nitriding at the plasma power of 700 W and 450 °C. The analytical results demonstrated that the hardness of type 303 specimens could be enhanced by plasma nitriding because of the formation of the γ_N phase. A bacterial test also demonstrated that the nitrided layer exhibited excellent antibacterial properties.     

采用 Hom ePlug AV 7400系列E oC 产品开展双向业务的探讨

利用广电的接入网络与中国移动通信公司合作,采用EPON ＋EoC 模式,使用HomePlug AV 7400系列EoC产品,实现有线数字电视双向网络的建设,开展广播电视双向高清互动点播与双向宽带数据业务,彻底解决早期使用BPL EoC产品所造成的带宽瓶颈等问题。     

油炸辣椒品质影响因素的研究

过氧化值(peroxide value,POV)和酸价(acid value,AV)是衡量油脂及其油炸食品品质的两个重要因素,由于它们的变化受到油炸过程中各种参数的影响,探讨了在油炸过程中油炸原料、油炸时间、油炸温度、水分对产品质量变化情况的影响.     

电视信号智能调度系统设计及应用

结合AV技术、IT技术的发展,信号调度网络、节目制播网络、综合办公网络已经成为全台网三个主要的技术系统,本文介绍云南电视台信号调度系统的设计原则、系统架构、主要设备选型及其技术特点.     

基于UPnP和UPnP AV的多媒体内容同步和回放

简要描述了基于UPnP技术架构和UPnP AV规范的家庭娱乐系统(HES)的实现方案,在HES中提出了设备选择算法、轻量级可切换播放服务和快速同步算法.设备选择算法实现了用户零干预条件下的自动切换,轻量级可切换播放服务提供了一个简单高效的服务实现,而快速同步算法将媒体播放切换动作前的同步时间降低到秒数量级,与传统内容同步方法分钟级的延时相比具有重要的使用价值.     

An unusual cause of subacute airway obstruction in a hemodialysis patient with brachio‐cephalic arteriovenous fistula: A rare presentation of central venous occlusion

A young lady with an arteriovenous (AV) fistula on hemodialysis was referred for surgical management following a failed endovascular approach to relieve central venous occlusion. She had an obstructed left brachiocephalic vein with a history of numerous central vein catheter placements. Alternative routes for new arteriovenous fistula creation had been exhausted due to previous contralateral upper limb fistula rupture and ligation. To the best of our knowledge, no similar cases of airway obstruction in central venous occlusion occurring in hemodialysis patients with AV fistula have been reported. The importance of identifying the possible emergency red flags in hemodialysis patients with central venous occlusion is important to prevent unwanted consequences.     

A Greener Alternative Titration Method for Measuring Acid Values of Fats,Oils, and Grease

A greener alternative method is proposed for measuring acid values (AV) of fats, oils, and grease (FOG) based on visual titration. Compared with Official Method Cd 3d-63 of the American Oil Chemists' Society (AOCS), this greener alternative method can eliminate the use of toluene, which in turn reduces toxicity and cost. A total of 44 samples of yellow and brown grease with AV ranging from 0.13 to 170.37 (mg KOH) g⁻¹ were titrated using both methods. The alternative titration method can provide accurate and reliable results to determine the AV of FOG by various statistical analyses including repeatability, linear regression, f-test, t-test, and method accuracy calibration with AOCS Cd 3d-63. This low-cost method can be recommended for routine titration in research and development, and in biodiesel plants for most FOG samples.     

ZA303高强韧耐磨合金回转窑托轮瓦研究及应用

传统的回转窑托轮瓦由铜合金制造，其主要缺点是容易翻瓦、抱轴、拉丝，且不耐磨、寿命短、造价高。水泥企业迫切需要能够替代铜瓦且性能优良的产品。为此，沈阳宇航金属材料研究所开发了拥有全部知识产权的ZA303高强韧耐磨合金。详细介绍了该合金的力学性能及摩擦学等其他物理性能。工程实践表明，用ZA303高强韧耐磨合金制造的回转窑托轮瓦具有优良的。     

Hp303捕收剂浮选萤石的研究

以多种石油化工和有机化工副产物为原料，辅之以一定的泡沫调整剂，合成了新型捕收剂Ｈ＿（ｐ３０３）．Ｈ＿（Ｐ３０３）浮选萤石具有良好的捕收性和选择性，工业生产试验表明：ＨＰ＿（Ｐ３０３）优于油酸．