Application effects of "two-classroom" teaching mode in basic life support training for medical staffs / 中国中西医结合急救杂志

Objective To investigate the effects of "two-classroom" teaching mode of basic life support (BLS) training on medical staffs. Methods One hundred and ninety-nine medical staffs trained in BLS curriculum education from May to August 2018 were selected as the research subjects. They were divided into two groups according to random number table: "two-classroom" teaching mode group (102) and traditional teaching mode group (97). The medical staffs in the traditional teaching mode group were trained by the traditional mode, while those in the"two-classroom" teaching mode group were trained by the "two-classroom" teaching mode, including the first and second classes; the first class is in-class teaching, using the Chinese version of the original American Heart Association (AHA) textbook, whose contents included basic life support operation video observation, practical operation, scene simulation and other teaching modes to carry out classroom teaching, and the second class was mainly in the extracurricular scene simulation. After the training, the differences in teaching effects regarding theoretical knowledge test scores and operational skills test scores and the degrees of satisfaction between the two groups were compared. Results The theoretical and operational scores of the "two-classroom" teaching mode group were significantly higher than those of the traditional teaching mode group (theoretical scores: 92.10±2.40 vs. 83.4±2.5, operational scores: 91.10±2.20 vs. 82.23±2.13, both P < 0.05). The degree of satisfaction with the BLS training (including 5 parts: controllable learning time, good interaction, cooperative communication, autonomous learning ability, achieving teaching goals) in the medical staffs in the "two-classroom" teaching mode group were higher than those in the traditional teaching mode group (controllable learning time: 98.04±6.35 vs. 83.51±5.27, good interaction: 97.06±6.12 vs. 83.51±5.33, cooperative communication: 96.08±6.07 vs. 73.20±4.96, autonomous learning ability: 96.08±6.15 vs. 73.20±4.28 and achieving teaching goals: 98.04±6.27 vs. 79.38±4.62, all P < 0.05). Conclusion The "two-classroom" teaching mode is a scientific, practical, simple and convenient teaching method, which can improve the theoretical and operational performance grades of trainees, and the medical staffs are well satisfied with the "two-classroom" teaching mode of BLS.

Sucrose supply from leaves is required for aerenchymatous phellem formation in hypocotyl of soybean under waterlogged conditions.

Background and Aims: Soil waterlogging often causes oxygen deficiency in the root systems of plants and severely inhibits plant growth. Formation of aerenchyma - interconnected spaces that facilitate the movement of gases between and within the aerial and submerged parts of plants - is an adaptive trait for coping with waterlogged conditions. Soybean (Glycine max) forms porous secondary tissues known as aerenchymatous phellem (AP), which are derived from the outermost cell layer of phellogen. To understand what factors other than waterlogging are involved in phellogen and AP formation, we examined how their formation in soybean seedlings was affected by darkness, CO2 deficiency and blockage of phloem transport. Methods: Aerenchymatous phellem and phellogen formation were expressed as area ratios in cross-sections of hypocotyl. CO2 was depleted by use of calcium oxide and sodium hydroxide. Phloem transport was blocked by heat-girdling of hypocotyls. Sucrose levels were measured by spectrophotometry. Key Results: Under light conditions, waterlogging induced the accumulation of high concentrations of sucrose in hypocotyls, followed by phellogen and AP formation in hypocotyls. Phellogen formation and AP formation were inhibited by darkness, CO2 deficiency and blockage of phloem transport. Phellogen formation and AP formation were also inhibited by excision of shoots above the epicotyl, but they recovered following application of sucrose (but not glucose or fructose application) to the cut surface. Conclusions: The results demonstrate that sucrose derived from leaves is essential for AP and phellogen formation in soybean hypocotyls under waterlogged soil conditions. Maintenance of a high sucrose concentration is thus essential for the development of phellogen and AP and the differentiation of phellogen to AP.

Risk assessment for emergency events of infectious disease in outlying areas of large-scale activities / 浙江大学学报·医学版

<p><b>OBJECTIVE</b>To identify and assess the potential public health risks of emergency events of infectious disease in the surrounding areas of Hangzhou during the 11th G20 summit, and to assess their impacts on the G20 summit.</p><p><b>METHODS</b>The surrounding cities of Hangzhou included Ningbo, Wenzhou, Jiaxing, Huzhou, Shaoxing, Jinhua, Quzhou, Zhoushan, Taizhou and Lishui. Background information on infectious diseases in Zhejiang province was collected, and the brainstorming and expert consultation methods were used to identify the risks. The local risks and the impact of local risks on the G20 summit were assessed.</p><p><b>RESULTS</b>The criteria for public health risk was first established. Through the assessments,a total of 27 kinds of infectious diseases in 4 types of public health risks were identified. The impact of these risks on Hangzhou G20 summit was divided into 1 item of high-risk, 12 items of medium risk and 14 items of low risk.According to the results of risk assessment, the recommendations for risk management of respiratory infectious diseases, intestinal infectious diseases, imported infectious diseases like Middle East respiratory syndrome and other infectious diseases were made. With risk management, Middle East respiratory syndrome was not occurred during the G20 summit, and the epidemic situation of other infectious diseases with middle or low risks was almost the same with that of past years.</p><p><b>CONCLUSIONS</b>sThe public health risks of Hangzhou G20 summit from sudden infectious diseases in outlying areas are mainly medium and low risks. The recommendations on risk management provide a basis for reducing the adverse consequences of public health risks in the event of an outbreak of infectious diseases, avoiding the impact of various risk factors in the outlying areas on G20 summit.</p>