Objective: to study the effectiveness of "TRICE" in the treatment and prevention of tuberculosis under the condition of treating tuberculosis patients. Methods: from January 2012 to December 2020, 163 patien...Objective: to study the effectiveness of "TRICE" in the treatment and prevention of tuberculosis under the condition of treating tuberculosis patients. Methods: from January 2012 to December 2020, 163 patients with tuberculosis were randomly divided into two groups. The control group provided general medical treatment, while the research group introduced the model of tuberculosis compound. Self-care and quality of life before and after nursing were compared. Results: compared with the control group, the ability of self-care and quality of life in the study group was significantly different (P < 0.05). Conclusion: the introduction of "Triune" model of tuberculosis type of tuberculosis patients gives specific results, which increases the ability of patients to take care of patients independently and improve their quality of life.展开更多
Compared with traditional real-time forecasting,this paper proposes a Grey Markov Model(GMM) to forecast the maximum water levels at hydrological stations in the estuary area.The GMM combines the Grey System and Marko...Compared with traditional real-time forecasting,this paper proposes a Grey Markov Model(GMM) to forecast the maximum water levels at hydrological stations in the estuary area.The GMM combines the Grey System and Markov theory into a higher precision model.The GMM takes advantage of the Grey System to predict the trend values and uses the Markov theory to forecast fluctuation values,and thus gives forecast results involving two aspects of information.The procedure for forecasting annul maximum water levels with the GMM contains five main steps:1) establish the GM(1,1) model based on the data series;2) estimate the trend values;3) establish a Markov Model based on relative error series;4) modify the relative errors caused in step 2,and then obtain the relative errors of the second order estimation;5) compare the results with measured data and estimate the accuracy.The historical water level records(from 1960 to 1992) at Yuqiao Hydrological Station in the estuary area of the Haihe River near Tianjin,China are utilized to calibrate and verify the proposed model according to the above steps.Every 25 years' data are regarded as a hydro-sequence.Eight groups of simulated results show reasonable agreement between the predicted values and the measured data.The GMM is also applied to the 10 other hydrological stations in the same estuary.The forecast results for all of the hydrological stations are good or acceptable.The feasibility and effectiveness of this new forecasting model have been proved in this paper.展开更多
North and west China has abundant coal resources, however, such resources make these regions prone to serious mine fire disasters. Although the copious sand and fly ash resources found in these areas can be used as fi...North and west China has abundant coal resources, however, such resources make these regions prone to serious mine fire disasters. Although the copious sand and fly ash resources found in these areas can be used as fire-fighting materials, conventional grouting is expensive because of water shortage and loess particles. A new compound material(i.e., a sand-suspended colloid), which comprises a mineral inorganic gel and an organic polymer, is developed in the current study to improve the quality of sand injection and reduce water wastage when grouting. The new material can steadily suspend the sand, through the addition of a small amount of colloid yielding steady sand-suspended slurry. The process of producing the slurry is convenient and quick, overcoming the shortage of sand-suspending thickeners which need heat and are difficult to produce. The space work model based on the theory of the double-electric layer is established to study the suspended mechanism of the solid particles in the sand-suspended colloid.The dispersion effect of the sand-suspended colloid is demonstrated by the incorporation of the electrostatic effect by the double-electric layer and the steric hindrance effect on the sand particles, ensuring the stability of the colloid system and the steady suspension of sand particles in the sand-suspended colloid.Mechanical analysis indicates that the sand is suspended steadily under the condition that the rock sand particles stress on the lower part of the fluid is less than the yield stress of the colloid. Finally, the fireprevention technology of sand suspension was applied and tested in the Daliuta Coal Mine, achieving successful results.展开更多
Purpose： As trauma is a public health problem, different programs have been designed to prevent in- juries. The aim of this study was to evaluate the effectiveness of an educational model that measures the adolescent...Purpose： As trauma is a public health problem, different programs have been designed to prevent in- juries. The aim of this study was to evaluate the effectiveness of an educational model that measures the adolescents＇ attitudes towards the rules of road safety, alcohol and road accidents in Colombia. Methods： A pedagogical model evaluating the effect of road safety education and adolescents＇ attitudes towards and experiences of alcohol and road accidents in Colombia was created. After the education concluded, this educational process is analyzed by its impact on adolescents＇ behavior. The educational program included 160 adolescents with the mean age being 1Z5 years. Results： The test results indicated that before the educational program 80g of adolescents did not use a safety element when driving, while after the educational program the percentage of no helmet use among adolescents decreased from 72.5% to 24.3% （p = 0.0001 ） and driving a vehicle under the state of drunkenness from 49.3% to 8.1% （p = 0.0001）. Conclusion： An educational model aimed at preventing injuries caused by traffic accidents is shown to be effective in generating changes in adolescents＇ customs of and attitudes towards alcohol and road safety standards in Colombia.展开更多
Liver resection is increasingly used for a variety of benign and malignant conditions.Despite advances in preoperative selection,surgical technique and perioperative management,posthepatectomy liver failure(PHLF)is st...Liver resection is increasingly used for a variety of benign and malignant conditions.Despite advances in preoperative selection,surgical technique and perioperative management,posthepatectomy liver failure(PHLF)is still a leading cause of morbidity and mortality following liver resection.Given the devastating physiological consequences of PHLF and the lack of effective treatment options,identifying risk factors and preventative strategies for PHLF is paramount.In the past,a major limitation to conducting high quality research on risk factors and prevention strategies for PHLF has been the absence of a standardized definition.In this article,we describe relevant definitions for PHLF,discuss risk factors and prediction models,and review advances in liver assessment tools and PHLF prevention strategies.展开更多
In order to improve the emergency management capability of urban rail transit system and reduce accidents during metro operation,an emergency management capability evaluation method combining analytic hierarchy proces...In order to improve the emergency management capability of urban rail transit system and reduce accidents during metro operation,an emergency management capability evaluation method combining analytic hierarchy process(AHP)and technique for order preference by similarity to ideal solution(TOPSIS)is proposed.Based on the Prevention Preparation Response Recovery(PPRR)model,factors influencing the emergency management capability of the urban rail transit system are summarized from the perspective of‘human,machine,environment and management’.Then,an emergency management capability evaluation index system containing of 20 secondary indicators is constructed in four stages:emergency prevention,emergency preparation,emergency response and emergency recovery.The weights of indicators are calculated using the AHP method,and the closeness of each indicator to the optimal solution is analysed with the TOPSIS method.Finally,take the Beijing Metro Line 13 as an example to investigate the level of emergency management capability of urban rail transit.The results show that the emergency management capability of Beijing’s urban rail transit system is‘well’,among which hazard prevention measures(0.31)and emergency response team(0.34)have a greater weight on the emergency management capability of rail transit.The model can more accurately assess the emergency management capability of urban rail transit and provide a basis for emergency management.展开更多
文摘Objective: to study the effectiveness of "TRICE" in the treatment and prevention of tuberculosis under the condition of treating tuberculosis patients. Methods: from January 2012 to December 2020, 163 patients with tuberculosis were randomly divided into two groups. The control group provided general medical treatment, while the research group introduced the model of tuberculosis compound. Self-care and quality of life before and after nursing were compared. Results: compared with the control group, the ability of self-care and quality of life in the study group was significantly different (P < 0.05). Conclusion: the introduction of "Triune" model of tuberculosis type of tuberculosis patients gives specific results, which increases the ability of patients to take care of patients independently and improve their quality of life.
基金supported by the National Natural Science Foundation of China (50879085)the Program for New Century Excellent Talents in University(NCET-07-0778)the Key Technology Research Project of Dynamic Environmental Flume for Ocean Monitoring Facilities (201005027-4)
文摘Compared with traditional real-time forecasting,this paper proposes a Grey Markov Model(GMM) to forecast the maximum water levels at hydrological stations in the estuary area.The GMM combines the Grey System and Markov theory into a higher precision model.The GMM takes advantage of the Grey System to predict the trend values and uses the Markov theory to forecast fluctuation values,and thus gives forecast results involving two aspects of information.The procedure for forecasting annul maximum water levels with the GMM contains five main steps:1) establish the GM(1,1) model based on the data series;2) estimate the trend values;3) establish a Markov Model based on relative error series;4) modify the relative errors caused in step 2,and then obtain the relative errors of the second order estimation;5) compare the results with measured data and estimate the accuracy.The historical water level records(from 1960 to 1992) at Yuqiao Hydrological Station in the estuary area of the Haihe River near Tianjin,China are utilized to calibrate and verify the proposed model according to the above steps.Every 25 years' data are regarded as a hydro-sequence.Eight groups of simulated results show reasonable agreement between the predicted values and the measured data.The GMM is also applied to the 10 other hydrological stations in the same estuary.The forecast results for all of the hydrological stations are good or acceptable.The feasibility and effectiveness of this new forecasting model have been proved in this paper.
基金support of the research funds provided by the National Natural Science Foundation of China (Nos. 51304071, 51304073)the Open Projects of State Key Laboratory of Coal Resources and Safe Mining, China University of Mining & Technology of China (No. 12KF02)
文摘North and west China has abundant coal resources, however, such resources make these regions prone to serious mine fire disasters. Although the copious sand and fly ash resources found in these areas can be used as fire-fighting materials, conventional grouting is expensive because of water shortage and loess particles. A new compound material(i.e., a sand-suspended colloid), which comprises a mineral inorganic gel and an organic polymer, is developed in the current study to improve the quality of sand injection and reduce water wastage when grouting. The new material can steadily suspend the sand, through the addition of a small amount of colloid yielding steady sand-suspended slurry. The process of producing the slurry is convenient and quick, overcoming the shortage of sand-suspending thickeners which need heat and are difficult to produce. The space work model based on the theory of the double-electric layer is established to study the suspended mechanism of the solid particles in the sand-suspended colloid.The dispersion effect of the sand-suspended colloid is demonstrated by the incorporation of the electrostatic effect by the double-electric layer and the steric hindrance effect on the sand particles, ensuring the stability of the colloid system and the steady suspension of sand particles in the sand-suspended colloid.Mechanical analysis indicates that the sand is suspended steadily under the condition that the rock sand particles stress on the lower part of the fluid is less than the yield stress of the colloid. Finally, the fireprevention technology of sand suspension was applied and tested in the Daliuta Coal Mine, achieving successful results.
文摘Purpose： As trauma is a public health problem, different programs have been designed to prevent in- juries. The aim of this study was to evaluate the effectiveness of an educational model that measures the adolescents＇ attitudes towards the rules of road safety, alcohol and road accidents in Colombia. Methods： A pedagogical model evaluating the effect of road safety education and adolescents＇ attitudes towards and experiences of alcohol and road accidents in Colombia was created. After the education concluded, this educational process is analyzed by its impact on adolescents＇ behavior. The educational program included 160 adolescents with the mean age being 1Z5 years. Results： The test results indicated that before the educational program 80g of adolescents did not use a safety element when driving, while after the educational program the percentage of no helmet use among adolescents decreased from 72.5% to 24.3% （p = 0.0001 ） and driving a vehicle under the state of drunkenness from 49.3% to 8.1% （p = 0.0001）. Conclusion： An educational model aimed at preventing injuries caused by traffic accidents is shown to be effective in generating changes in adolescents＇ customs of and attitudes towards alcohol and road safety standards in Colombia.
文摘Liver resection is increasingly used for a variety of benign and malignant conditions.Despite advances in preoperative selection,surgical technique and perioperative management,posthepatectomy liver failure(PHLF)is still a leading cause of morbidity and mortality following liver resection.Given the devastating physiological consequences of PHLF and the lack of effective treatment options,identifying risk factors and preventative strategies for PHLF is paramount.In the past,a major limitation to conducting high quality research on risk factors and prevention strategies for PHLF has been the absence of a standardized definition.In this article,we describe relevant definitions for PHLF,discuss risk factors and prediction models,and review advances in liver assessment tools and PHLF prevention strategies.
基金This work was supported by the Fundamental Research Funds for the Science and Technology Innovation Program for Higher Education Institutions in Shanxi Province(Grants No.2022L448 and 2022L449)the Doctoral Research Startup Project of Shanxi Datong University(Grants No.2020-B-18 and 2020-B-08).
文摘In order to improve the emergency management capability of urban rail transit system and reduce accidents during metro operation,an emergency management capability evaluation method combining analytic hierarchy process(AHP)and technique for order preference by similarity to ideal solution(TOPSIS)is proposed.Based on the Prevention Preparation Response Recovery(PPRR)model,factors influencing the emergency management capability of the urban rail transit system are summarized from the perspective of‘human,machine,environment and management’.Then,an emergency management capability evaluation index system containing of 20 secondary indicators is constructed in four stages:emergency prevention,emergency preparation,emergency response and emergency recovery.The weights of indicators are calculated using the AHP method,and the closeness of each indicator to the optimal solution is analysed with the TOPSIS method.Finally,take the Beijing Metro Line 13 as an example to investigate the level of emergency management capability of urban rail transit.The results show that the emergency management capability of Beijing’s urban rail transit system is‘well’,among which hazard prevention measures(0.31)and emergency response team(0.34)have a greater weight on the emergency management capability of rail transit.The model can more accurately assess the emergency management capability of urban rail transit and provide a basis for emergency management.
