The load-bearing performance(LBP)of pumpable supports(PPS)is crucial for the stability of longwall pre-driven recovery room(PRR)surrounding rock.However,the unbalanced bearing coefficient(UBC)of the PPS(undertaking un...The load-bearing performance(LBP)of pumpable supports(PPS)is crucial for the stability of longwall pre-driven recovery room(PRR)surrounding rock.However,the unbalanced bearing coefficient(UBC)of the PPS(undertaking unequal load along the mining direction)has not been investigated.A mechanical model of the PRR was established,considering the main roof cantilever beam structure,to derive an assessment formula for the load,the failure criteria,and the UBC of the PPS.Subsequently,the generation mechanisms,and influencing factors of the UBC were revealed.Global sensitivity analysis shows that the main roof hanging length(l_(2))and the spacing between the PPS(r)significantly impact the UBC.A novel design of the PPS and the coupling control technology were proposed and applied to reduce the UBC of the PPS in the adjacent longwall PRR.Monitor results showed no failure of the PPS at the test site,with the UBC(ζ)reduced to 1.1 consistent with the design value(1.15)basically,fully utilizing the collaborative LBP of the PPS.Finally,the maximum roof-to-floor convergence of the PRR was 234 mm,effectively controlling the stability of the surrounding rock of the PRR and ensuring the mining equipment recovery.展开更多
Two case studies were conducted in the Shennan mining area of Shaanxi Province,China to evaluate the surrounding rock deformation and stress evolution in pre-driven longwall recovery rooms· These studies mainly m...Two case studies were conducted in the Shennan mining area of Shaanxi Province,China to evaluate the surrounding rock deformation and stress evolution in pre-driven longwall recovery rooms· These studies mainly monitored the surrounding rock deformation and coal pillar stress in the recovery rooms of the N1206 panel of 2-2 coal seam at Ningtiaota Coal Mine and the 15205 panel of 5-2 coal seam at Hongliulin Coal Mine.The monitoring results showed that the surrounding rock deformation of the main recovery room and the coal pillar stress in the N1206 and 15205 panels began to increase significantly when the face was 36 m and 42 m away from the terminal line,respectively.After the face entered the main recovery room,the maximum roof-to-floor convergence in the N1206 and 15205 panels was 348.03 mm and 771.24 mm,respectively,and the coal pillar stresses increased more than 5 MPa and 7 MPa,respectively.In addition,analysis of the periodic weighting data showed that the main roof break position of the N1206 and 15205 panels after the longwall face entered the main recovery room was-3.8 m and-8.2 m,respectively.This research shows that when the main roof breaks above the coal pillar,the surrounding rock deformation of the main recovery room and the coal pillar stress increase sharply.The last weighting is the key factor affecting the stability of the main recovery room and the coal pillar;main roof breaks at disadvantageous positions are the main cause of the support crushing accidents.展开更多
<strong>Background:</strong> Nursing care in the recovery room is oriented to take into account the patient’s condition after surgery intervention with its main purpose of providing direct and continuous ...<strong>Background:</strong> Nursing care in the recovery room is oriented to take into account the patient’s condition after surgery intervention with its main purpose of providing direct and continuous patient observation in emergence from general or regional anesthesia. In the absence of professional assistance, patients can develop complications that can lead them into shock or death. This study aims to understand the place of nurses in guiding nursing care in recovery room in two hospitals of Gitega Province by assessing the nurse’s knowledge and attitudes for the promotion of quality nursing care for post-operative patients. <strong>Methods:</strong> A cross sectional study design was used to assess the practice of nurses in managing nursing care in the recovery room in these two hospitals. A purposive sampling method was used to select the 82 nurses working in the recovery room for these two hospitals and Alain Bouchard’s formula was used to calculate the sample size. Data were collected using a self-report method involving questionnaire completion with five components addressing participants identifications, factors related to the work organization, factors related to the work environment, factors related to healthcare system, and nursing interventions in recovery room. <strong>Results:</strong> Findings revealed a significant lack of knowledge among the participants and their attitudes were slightly poor as for most of the variables of factors related to healthcare system as their score was less than 50% and their knowledge for nursing interventions was also poor as most of variable scores were less than 25%. <strong>Conclusions:</strong> The study findings were slightly poor as their scores were less than 50% in most of the variables;therefore, it was recommended that in-service training and workshops should be organized by these healthcare facilities for the purpose of empowering the nurse’s knowledge and practice. Moreover, these institutions should provide and encourage nurses to use nursing guidelines and protocols.展开更多
Objective: To analyze the effect of nursing intervention in operating room for gastric cancer patients in anesthesia recovery period. Methods: From June 2021 to December 2021, 78 patients who underwent gastric cancer ...Objective: To analyze the effect of nursing intervention in operating room for gastric cancer patients in anesthesia recovery period. Methods: From June 2021 to December 2021, 78 patients who underwent gastric cancer surgery in our hospital were selected for research. Combined with the random number table method, they were divided into the control group (providing routine nursing care in operating room) and the observation group (providing nursing intervention in operating room) with 39 patients in each group respectively. The body temperature of the two groups during operation, during abdominal closure and after operation, the time of leaving anesthesia room, extubation, postoperative wakefulness and hospitalization, degree of satisfaction with nursing work was compared. Results: Compared with the control group, the body temperature in the observation group tended to be more normal during operation, during abdominal closure and after operation (P 0.05). The time of leaving anesthesia room, extubation, postoperative wakefulness and hospitalization in the observation group were shorter than those in the control group (P 0.05). The satisfaction degree of the observation group with nursing work was higher than that of the control group (P 0.05). Conclusion: Nursing intervention in operating room is effective for gastric cancer patients in anesthesia recovery period, which can maintain their perioperative temperature stability, promote their postoperative recovery and enhance their satisfaction with nursing work. It is worth adopting.展开更多
目的分析基于加速康复外科(enhanced recovery after surgery,ERAS)理念的手术室护理干预在关节置换术中的应用价值。方法方便选取2022年1月—2023年10月泰州市第二人民医院收治的76例行关节置换术患者为研究对象,按照不同护理干预分为...目的分析基于加速康复外科(enhanced recovery after surgery,ERAS)理念的手术室护理干预在关节置换术中的应用价值。方法方便选取2022年1月—2023年10月泰州市第二人民医院收治的76例行关节置换术患者为研究对象,按照不同护理干预分为研究组和对照组,各38例。对照组实施常规围术期护理,研究组实施ERAS理念的手术室护理干预,分析两组患者术后生活质量、疼痛情况、并发症发生率及满意度。结果研究组躯体功能、心理功能、社会功能、物质生活等生活质量评分均优于对照组,差异有统计学意义(P均<0.05)。研究组总满意率高于对照组,并发症总发生率低于对照组,差异有统计学意义(P均<0.05)。研究组术后疼痛评分为(2.05±0.96)分,低于对照组的(3.44±1.22)分,差异有统计学意义(t=5.519,P<0.05)。结论基于ERAS理念的手术室护理干预可显著提高患者康复效果以及生活质量,切实保障患者健康。展开更多
基金financial support provided by the Xinjiang Uygur Autonomous Region Key R&D Project Task Special-Department and Department Linkage Project(No.2022B01051)Major Project of Regional Joint Foundation of China(No.U21A20107)+1 种基金Hunan Provincial Natural Science Foundation of China(No.2024JJ4021)the Xinjiang Uygur Autonomous Region Tianchi Introduction Plan(No.2024XGYTCYC03)。
文摘The load-bearing performance(LBP)of pumpable supports(PPS)is crucial for the stability of longwall pre-driven recovery room(PRR)surrounding rock.However,the unbalanced bearing coefficient(UBC)of the PPS(undertaking unequal load along the mining direction)has not been investigated.A mechanical model of the PRR was established,considering the main roof cantilever beam structure,to derive an assessment formula for the load,the failure criteria,and the UBC of the PPS.Subsequently,the generation mechanisms,and influencing factors of the UBC were revealed.Global sensitivity analysis shows that the main roof hanging length(l_(2))and the spacing between the PPS(r)significantly impact the UBC.A novel design of the PPS and the coupling control technology were proposed and applied to reduce the UBC of the PPS in the adjacent longwall PRR.Monitor results showed no failure of the PPS at the test site,with the UBC(ζ)reduced to 1.1 consistent with the design value(1.15)basically,fully utilizing the collaborative LBP of the PPS.Finally,the maximum roof-to-floor convergence of the PRR was 234 mm,effectively controlling the stability of the surrounding rock of the PRR and ensuring the mining equipment recovery.
基金Support for this work was provided by the National Natural Science Foundation of China(No.51679199)Key Laboratory for Science and Technology Co-ordination and Innovation Projects of Shaanxi Province(No.2014SZS15-Z01)and is thankfully acknowledged by the authors.
文摘Two case studies were conducted in the Shennan mining area of Shaanxi Province,China to evaluate the surrounding rock deformation and stress evolution in pre-driven longwall recovery rooms· These studies mainly monitored the surrounding rock deformation and coal pillar stress in the recovery rooms of the N1206 panel of 2-2 coal seam at Ningtiaota Coal Mine and the 15205 panel of 5-2 coal seam at Hongliulin Coal Mine.The monitoring results showed that the surrounding rock deformation of the main recovery room and the coal pillar stress in the N1206 and 15205 panels began to increase significantly when the face was 36 m and 42 m away from the terminal line,respectively.After the face entered the main recovery room,the maximum roof-to-floor convergence in the N1206 and 15205 panels was 348.03 mm and 771.24 mm,respectively,and the coal pillar stresses increased more than 5 MPa and 7 MPa,respectively.In addition,analysis of the periodic weighting data showed that the main roof break position of the N1206 and 15205 panels after the longwall face entered the main recovery room was-3.8 m and-8.2 m,respectively.This research shows that when the main roof breaks above the coal pillar,the surrounding rock deformation of the main recovery room and the coal pillar stress increase sharply.The last weighting is the key factor affecting the stability of the main recovery room and the coal pillar;main roof breaks at disadvantageous positions are the main cause of the support crushing accidents.
文摘<strong>Background:</strong> Nursing care in the recovery room is oriented to take into account the patient’s condition after surgery intervention with its main purpose of providing direct and continuous patient observation in emergence from general or regional anesthesia. In the absence of professional assistance, patients can develop complications that can lead them into shock or death. This study aims to understand the place of nurses in guiding nursing care in recovery room in two hospitals of Gitega Province by assessing the nurse’s knowledge and attitudes for the promotion of quality nursing care for post-operative patients. <strong>Methods:</strong> A cross sectional study design was used to assess the practice of nurses in managing nursing care in the recovery room in these two hospitals. A purposive sampling method was used to select the 82 nurses working in the recovery room for these two hospitals and Alain Bouchard’s formula was used to calculate the sample size. Data were collected using a self-report method involving questionnaire completion with five components addressing participants identifications, factors related to the work organization, factors related to the work environment, factors related to healthcare system, and nursing interventions in recovery room. <strong>Results:</strong> Findings revealed a significant lack of knowledge among the participants and their attitudes were slightly poor as for most of the variables of factors related to healthcare system as their score was less than 50% and their knowledge for nursing interventions was also poor as most of variable scores were less than 25%. <strong>Conclusions:</strong> The study findings were slightly poor as their scores were less than 50% in most of the variables;therefore, it was recommended that in-service training and workshops should be organized by these healthcare facilities for the purpose of empowering the nurse’s knowledge and practice. Moreover, these institutions should provide and encourage nurses to use nursing guidelines and protocols.
文摘Objective: To analyze the effect of nursing intervention in operating room for gastric cancer patients in anesthesia recovery period. Methods: From June 2021 to December 2021, 78 patients who underwent gastric cancer surgery in our hospital were selected for research. Combined with the random number table method, they were divided into the control group (providing routine nursing care in operating room) and the observation group (providing nursing intervention in operating room) with 39 patients in each group respectively. The body temperature of the two groups during operation, during abdominal closure and after operation, the time of leaving anesthesia room, extubation, postoperative wakefulness and hospitalization, degree of satisfaction with nursing work was compared. Results: Compared with the control group, the body temperature in the observation group tended to be more normal during operation, during abdominal closure and after operation (P 0.05). The time of leaving anesthesia room, extubation, postoperative wakefulness and hospitalization in the observation group were shorter than those in the control group (P 0.05). The satisfaction degree of the observation group with nursing work was higher than that of the control group (P 0.05). Conclusion: Nursing intervention in operating room is effective for gastric cancer patients in anesthesia recovery period, which can maintain their perioperative temperature stability, promote their postoperative recovery and enhance their satisfaction with nursing work. It is worth adopting.
文摘目的分析基于加速康复外科(enhanced recovery after surgery,ERAS)理念的手术室护理干预在关节置换术中的应用价值。方法方便选取2022年1月—2023年10月泰州市第二人民医院收治的76例行关节置换术患者为研究对象,按照不同护理干预分为研究组和对照组,各38例。对照组实施常规围术期护理,研究组实施ERAS理念的手术室护理干预,分析两组患者术后生活质量、疼痛情况、并发症发生率及满意度。结果研究组躯体功能、心理功能、社会功能、物质生活等生活质量评分均优于对照组,差异有统计学意义(P均<0.05)。研究组总满意率高于对照组,并发症总发生率低于对照组,差异有统计学意义(P均<0.05)。研究组术后疼痛评分为(2.05±0.96)分,低于对照组的(3.44±1.22)分,差异有统计学意义(t=5.519,P<0.05)。结论基于ERAS理念的手术室护理干预可显著提高患者康复效果以及生活质量,切实保障患者健康。
