Two models are defined for predicting the trajectory of a foam jet originating from a fire monitor(hydrant)and the related intensity drop point.An experimental framework is also defined and used accordingly to compare...Two models are defined for predicting the trajectory of a foam jet originating from a fire monitor(hydrant)and the related intensity drop point.An experimental framework is also defined and used accordingly to compare real-time data with the predictions of such models.This mixed theoretical-experimental approach is proven to be effective for the determination of otherwise unknown coefficients which take into account several important factors such as the operation pressure,the elevation angle and the nozzle diameter.It is shown that the mean absolute error is smaller than 20%.展开更多
To protect mining areas from electrical fire,it is very important to install electrical fire monitoring system to ensure safety in development of mineral resources and for buildings.In this paper,design for electrical...To protect mining areas from electrical fire,it is very important to install electrical fire monitoring system to ensure safety in development of mineral resources and for buildings.In this paper,design for electrical fire monitoring and detection system with optional sensor modules has been proposed.In addition,necessity and suitability of electrical fire monitoring and detection system with optional sensor modules in mining areas have been reviewed.The designed electrical fire monitoring and detection system suitable for work environment of mining industry is composed by host-computer monitoring software and slave-computer detectors.Monitoring detectors are manufactured by using embedded technology.External shells deployed have superior enclosure performances and explosion-proof properties.It is easy to install and maintain the system.In general,the system has reached,or even exceeded standards specified in national standards for performances and appearances of such devices.Test results show application of electrical fire monitoring and detection system can effectively enhance monitoring intensity over the mining areas and provide reliable guarantee to ensure orderly development of mineral resources and to protect physical and property safety of citizens in these areas.展开更多
This paper designs a way to introduce Zig Bee technology into the ranch fire monitoring system,and builds a real-time ranch fire monitoring system based on Zig Bee wireless sensor network.The system can monitor the pa...This paper designs a way to introduce Zig Bee technology into the ranch fire monitoring system,and builds a real-time ranch fire monitoring system based on Zig Bee wireless sensor network.The system can monitor the parameters related to ranch in real time,such as air moisture,temperature and smoke density,so as to provide information support for ranch fire prevention and extinguishment.This paper researches the circuit design of Zig Bee wireless sensor network node,node information collection,data fusion,transmission and effective topological structure of sensor network.展开更多
目的:评价雷火灸联合排卵监测治疗子宫腺肌病合并不孕的临床疗效。方法:选择诊断符合子宫腺肌病合并不孕且中医辨证属于寒凝血瘀(具有经前综合症或经期下腹冷痛,得热痛减,肢端冰冷等临床表现)的患者120例,随机分为治疗组和对照组,每组...目的:评价雷火灸联合排卵监测治疗子宫腺肌病合并不孕的临床疗效。方法:选择诊断符合子宫腺肌病合并不孕且中医辨证属于寒凝血瘀(具有经前综合症或经期下腹冷痛,得热痛减,肢端冰冷等临床表现)的患者120例,随机分为治疗组和对照组,每组各60例。治疗组予雷火灸联合排卵监测,对照组单纯予排卵监测,比较两组6个月经周期内的妊娠率,痛经和中医证候群的改善情况以及血清癌抗原125的水平。结果:治疗组6个月经周期内妊娠率与对照组相比有统计学意义(50.0%vs 23.3%,P=0.021)。与对照组相比,治疗组痛经与中医证候群改善明显(分别为3.87±2.03 vs.5.70±1.01,P=0.002 and 7.33±4.11 vs.10.52±2.33,P=0.006)。两组相比血清癌抗原125的水平有显著性差异(55.45±14.65 vs 63.34±11.41,P=0.031)。但是子宫平均直径与对照组相比差异无统计学意义(67.13±7.59 vs.69.89±5.30,P=0.137)。结论:雷火灸联合排卵监测能有效地提高子宫腺肌症不孕患者的受孕率。展开更多
基金the National Key Research and Development Plan(Grant No.2016YFC0801300).
文摘Two models are defined for predicting the trajectory of a foam jet originating from a fire monitor(hydrant)and the related intensity drop point.An experimental framework is also defined and used accordingly to compare real-time data with the predictions of such models.This mixed theoretical-experimental approach is proven to be effective for the determination of otherwise unknown coefficients which take into account several important factors such as the operation pressure,the elevation angle and the nozzle diameter.It is shown that the mean absolute error is smaller than 20%.
基金the Science & Technology Research and Development Project of Langfang Municipal City for the Year 2013 (No.2013011048)Baoding GEEHO Electric Technology Development Co.,Ltd.for financial support and help in data acquisition and statistics during preparation of this paper
文摘To protect mining areas from electrical fire,it is very important to install electrical fire monitoring system to ensure safety in development of mineral resources and for buildings.In this paper,design for electrical fire monitoring and detection system with optional sensor modules has been proposed.In addition,necessity and suitability of electrical fire monitoring and detection system with optional sensor modules in mining areas have been reviewed.The designed electrical fire monitoring and detection system suitable for work environment of mining industry is composed by host-computer monitoring software and slave-computer detectors.Monitoring detectors are manufactured by using embedded technology.External shells deployed have superior enclosure performances and explosion-proof properties.It is easy to install and maintain the system.In general,the system has reached,or even exceeded standards specified in national standards for performances and appearances of such devices.Test results show application of electrical fire monitoring and detection system can effectively enhance monitoring intensity over the mining areas and provide reliable guarantee to ensure orderly development of mineral resources and to protect physical and property safety of citizens in these areas.
文摘This paper designs a way to introduce Zig Bee technology into the ranch fire monitoring system,and builds a real-time ranch fire monitoring system based on Zig Bee wireless sensor network.The system can monitor the parameters related to ranch in real time,such as air moisture,temperature and smoke density,so as to provide information support for ranch fire prevention and extinguishment.This paper researches the circuit design of Zig Bee wireless sensor network node,node information collection,data fusion,transmission and effective topological structure of sensor network.
文摘目的:评价雷火灸联合排卵监测治疗子宫腺肌病合并不孕的临床疗效。方法:选择诊断符合子宫腺肌病合并不孕且中医辨证属于寒凝血瘀(具有经前综合症或经期下腹冷痛,得热痛减,肢端冰冷等临床表现)的患者120例,随机分为治疗组和对照组,每组各60例。治疗组予雷火灸联合排卵监测,对照组单纯予排卵监测,比较两组6个月经周期内的妊娠率,痛经和中医证候群的改善情况以及血清癌抗原125的水平。结果:治疗组6个月经周期内妊娠率与对照组相比有统计学意义(50.0%vs 23.3%,P=0.021)。与对照组相比,治疗组痛经与中医证候群改善明显(分别为3.87±2.03 vs.5.70±1.01,P=0.002 and 7.33±4.11 vs.10.52±2.33,P=0.006)。两组相比血清癌抗原125的水平有显著性差异(55.45±14.65 vs 63.34±11.41,P=0.031)。但是子宫平均直径与对照组相比差异无统计学意义(67.13±7.59 vs.69.89±5.30,P=0.137)。结论:雷火灸联合排卵监测能有效地提高子宫腺肌症不孕患者的受孕率。
