摘要：【中文】本发明涉及电子技术领域，特别是一种限流供电控制电路，包括输入端和输出端，还包括PNP三极管Q2，所述PNP三极管Q2的发射极与输入端相连接，所述PNP三极管Q2的集电极与输出端相连接；还包括控制PNP三极管Q2基极电流的PNP三极管Q1，所述PNP三极管Q1的发射极与输入端相连接，所述PNP三极管Q1的集电极与PNP三极管Q2的基极相连接；所述输入端与地之间连接有防止PNP三极管Q1和PNP三极管Q2上电自锁的延时电路。采用上述结构后，本发明利用三极管的放大作用，控制电阻R4的大小从而控制PNP三极管Q2的基极电流，从而控制输出端的电流；当PNP三极管Q1打开后，只有当输入端重新上电，输出端才能正常输出；电路简单，成本低廉，功耗低。 【EN】The invention relates to the technical field of electronics, in particular to a current-limiting power supply control circuit, which comprises an input end, an output end and a PNP triode Q2, wherein an emitting electrode of the PNP triode Q2 is connected with the input end, and a collecting electrode of the PNP triode Q2 is connected with the output end; the PNP triode Q1 is used for controlling the base current of the PNP triode Q2, the emitting electrode of the PNP triode Q1 is connected with the input end, and the collecting electrode of the PNP triode Q1 is connected with the base electrode of the PNP triode Q2; and a delay circuit for preventing the PNP triode Q1 and the PNP triode Q2 from being electrified and self-locked is connected between the input end and the ground. After the structure is adopted, the amplification effect of the triode is utilized, the size of the resistor R4 is controlled, so that the base current of the PNP triode Q2 is controlled, and the current of the output end is controlled; when the PNP triode Q1 is turned on, the output end can normally output only when the input end is electrified again; the circuit is simple, the cost is low, and the power consumption is low.

摘要：【中文】本发明涉及电力电子技术领域，特别是一种交流快速切换开关，包括负载LOAD，还包括串联的IGBT功率管T1和IGBT功率管T2，所述IGBT功率管T1和IGBT功率管T2的中间连接点通过电感L与负载LOAD一端相连接，所述负载另一端与零线相连接；所述IGBT功率管T2的发射极通过二极管D2和二极管D1的串联电路与IGBT功率管T1的集电极相连接，所述二极管D2和二极管D1的中间连接点与火线相连接。采用上述结构后，本发明利用IGBT的快速开断的能力来实现电路的电流的迅速切换，切换时间在1ms左右，大大的解决了接触器切换时间长的问题。 【EN】The invention relates to the technical field of power electronics, in particular to an alternating current fast change-over switch which comprises a LOAD LOAD, an IGBT power tube T1 and an IGBT power tube T2 which are connected in series, wherein the middle connection point of the IGBT power tube T1 and the IGBT power tube T2 is connected with one end of the LOAD LOAD through an inductor L, and the other end of the LOAD is connected with a zero line; the emitter of the IGBT power tube T2 is connected with the collector of the IGBT power tube T1 through a series circuit of a diode D2 and a diode D1, and the middle connection point of the diode D2 and a diode D1 is connected with a live wire. After the structure is adopted, the rapid switching of the current of the circuit is realized by utilizing the rapid on-off capacity of the IGBT, the switching time is about 1ms, and the problem of long switching time of the contactor is greatly solved.

摘要：【中文】本发明属于分析化学技术领域，涉及一种磷酰胆碱吗啉的高效液相色谱检测方法。样液经十八烷基键合相的色谱柱分离，甲醇和水等度洗脱，蒸发光检测。本方法简单便捷，可快速测定磷酰胆碱吗啉含量，具有较高的准确性、稳定性和分离度。 【EN】The invention belongs to the technical field of analytical chemistry, and relates to a high performance liquid chromatography detection method of phosphorylcholine morpholine. Separating the sample solution by octadecyl bonded phase chromatographic column, isocratically eluting with methanol and water, and detecting by evaporation light. The method is simple and convenient, can quickly measure the content of phosphorylcholine morpholine, and has higher accuracy, stability and separation degree.

摘要：【中文】本发明属于分析化学技术领域，涉及一种磷酸胆碱的高效液相色谱检测方法。样液经中性酰胺基键合相色谱柱分离，乙腈和0.1％甲酸溶液等度洗脱，蒸发光检测器检测。本方法简单便捷，可快速测定磷酸胆碱含量，具有较高的准确性、稳定性和分离度。 【EN】The invention belongs to the technical field of analytical chemistry, and relates to a high performance liquid chromatography detection method of phosphorylcholine. Separating the sample liquid by a neutral amide bonded phase chromatographic column, isocratically eluting acetonitrile and 0.1 percent formic acid solution, and detecting by an evaporative light detector. The method is simple and convenient, can quickly measure the content of the phosphorylcholine, and has higher accuracy, stability and separation degree.

摘要：【中文】本发明公开了一种快速检测食盐中亚铁氰化钾的方法，属于食品安全快速检测技术领域。试样只需用水溶解，分取后加入80g/L且含1mol/L硫酸的硫酸铜溶液反应，离心后便可通过是否出现红褐色沉淀快速检测食盐中亚铁氰化钾的含量，检出限可达10mg/kg。该检测方法快速、便捷、操作简单，成本低，可以满足个体、企业、质监、工商等部门以及非专业人士的现场快速检测和实验室检测的需求。 【EN】The invention discloses a method for rapidly detecting potassium ferrocyanide in salt, belonging to the technical field of rapid detection of food safety. The sample is dissolved by water, 80g/L of copper sulfate solution containing 1mol/L of sulfuric acid is added after being separated for reaction, the content of potassium ferrocyanide in the salt can be rapidly detected by whether reddish brown precipitates appear or not after centrifugation, and the detection limit can reach 10 mg/kg. The detection method is rapid, convenient, simple to operate and low in cost, and can meet the requirements of on-site rapid detection and laboratory detection of individuals, enterprises, quality supervision, industrial and commercial departments and non-professionals.

摘要：【中文】本发明涉及一种能降低口腔上皮健康风险的袋装口含烟及其制备方法，属于无烟气烟草制品技术领域。取苦丁茶粉碎后，用超纯水震荡提取多次，合并提取液，4℃下离心，取上清液，上清液冻干后保存备用，得到苦丁茶提取物；烟叶粉碎至粒径为50~100目，并控制含水率为8~12%，得到烟叶粉末；向步骤（2）得到的烟叶粉末中加入的水，之后进行热处理，之后再按顺序加入矫味剂、1~6份酸碱调节剂、香味剂、苦丁茶提取物、清凉剂和抗氧化剂，混合至均匀，冷藏后，杀菌，包装，得到能降低口腔上皮健康风险的袋装口含烟。本发明制备方法简单可靠，制得的袋装口含烟能有效降低口腔风险，可以大大改善现有的袋装口含烟由于产生高渗环境导致口腔上皮细胞死亡的情况。 【EN】The invention relates to a bagged buccal cigarette capable of reducing the health risk of oral epithelium and a preparation method thereof, belonging to the technical field of smokeless tobacco products. Pulverizing Folum Ilicis, extracting with ultrapure water for several times, mixing extractive solutions, centrifuging at 4 deg.C, collecting supernatant, lyophilizing the supernatant, and storing to obtain Folum Ilicis extract; crushing tobacco leaves until the particle size is 50-100 meshes, and controlling the water content to be 8-12% to obtain tobacco leaf powder; and (3) adding water into the tobacco leaf powder obtained in the step (2), then carrying out heat treatment, then sequentially adding a flavoring agent, 1-6 parts of an acid-base regulator, a flavoring agent, a broadleaf holly leaf extract, a freshener and an antioxidant, mixing uniformly, refrigerating, sterilizing and packaging to obtain the bagged buccal cigarette capable of reducing the health risk of the oral epithelium. The preparation method is simple and reliable, and the prepared bagged mouth cigarette can effectively reduce the oral risk and greatly improve the condition that the existing bagged mouth cigarette causes the death of oral epithelial cells due to the generation of a hypertonic environment.

摘要：【中文】本发明涉及种含有麦冬提取物的胶基型嚼烟及其制备方法，属于无烟气烟草制品技术领域。取麦冬粉碎后，用超纯水震荡提取多次，合并提取液，4℃下离心，取上清液冻干，得到麦冬提取物；将胶基进行烘烤，在40~60℃，烘烤8~12h，向其中加入甜味剂、酸碱调节剂、香味剂、食用色素、保润剂和烟草粉末，在60℃下混合至均匀，之后经挤出、滚筒延压、裁切、老化，分装即为成品。本发明发现人在长期吸食胶基型嚼烟时，口腔上皮细胞微环境的渗透压升高，口腔细胞暴露在高渗环境中会导致细胞死亡，而本发明制得的产品能够大大改善现有的胶基型嚼烟由于产生高渗环境导致口腔上皮细胞死亡的情况，可以显著降低吸食胶基型嚼烟引起的口腔健康风险。 【EN】The invention relates to gum base type chewing tobacco containing an ophiopogon root extract and a preparation method thereof, belonging to the technical field of smokeless tobacco products. Pulverizing radix Ophiopogonis, extracting with ultrapure water for several times, mixing extractive solutions, centrifuging at 4 deg.C, collecting supernatant, and lyophilizing to obtain radix Ophiopogonis extract; baking the gum base, baking for 8-12 h at 40-60 ℃, adding a sweetening agent, an acid-base regulator, a flavoring agent, an edible pigment, a humectant and tobacco powder, mixing uniformly at 60 ℃, then extruding, rolling by a roller, cutting, aging and subpackaging to obtain a finished product. According to the invention, when people suck the gum base type chewing tobacco for a long time, the osmotic pressure of the microenvironment of the oral epithelial cells is increased, and the oral epithelial cells can die when being exposed in a hypertonic environment.