According to control theories, mine fires can be considered as an unsteady process after the normal ventilation system is disturbed. Applied the principal of physical chemistry and thermal fluid mechanics, the paramet...According to control theories, mine fires can be considered as an unsteady process after the normal ventilation system is disturbed. Applied the principal of physical chemistry and thermal fluid mechanics, the parameters models of the unsteady state system have been given, such as fuel combustion rate, heat of combustion, concentration, temperature, heat losses, heat resistance, work of expansion and heat pressure difference. The results of the calculation agree approximately with the results of the test. By the computer simulation, it is shown that the main factor of producing the throttling effect is the fire rate, second is the heat resistance and the heat pressure difference. The rate of heat flow that passes through the airway wall is the maximum on the surface, and decrease with time. The heat transfer progresses only within the range of 0.5 m away from theairway wall during combustion for 2 hours. It’s variable for the mass flux rate and the percentage concentration of the gas along the airway of the downstream. When the delayed time is very small, the variation can be neglected. Viscosity resistance is the main part of the heat resistance, second is the expansion resistance that is less than tens Pascal when Mach number is very small. Work of expansion is principally turned into heat losses, only a very small part is consumed by the work of the heat resistance and the inertia acceleration.展开更多
Large amounts of volcanic debris-avalanche deposits, which take the shape of hummocks, are distributed around the peripheries of the Laoheishan volcano and Huoshaoshan volcano in Wudalianchi World Geopark. In earlier ...Large amounts of volcanic debris-avalanche deposits, which take the shape of hummocks, are distributed around the peripheries of the Laoheishan volcano and Huoshaoshan volcano in Wudalianchi World Geopark. In earlier times, they were called "satellite volcanoes", namely, freestanding volcanoes. This paper points out that these deposits actually came from the collapse of the cones of these two volcanoes. When the lava flow spilled out at the base of the slope of the cones, the slope broke up and collapsed under the action of gravity. Later, ravines were formed on the slope. Caved slope clastics, accompanying lava flow, accumulated at the rims of the volcano cones. Although some accumulations may form very large cones, they are not volcanoes, but deposits of volcanic debris avalanches.展开更多
This paper investigates the properties of hydrated binary and ternary blended cements using limestone and calcined clay pozzolan as supplementary cementitious materials. The blended cements were hydrated and their pha...This paper investigates the properties of hydrated binary and ternary blended cements using limestone and calcined clay pozzolan as supplementary cementitious materials. The blended cements were hydrated and their phase compositions were evaluated by thermogravimetric and powder X-ray diffraction at 28 days. The morphology of the samples was also determined. The water demand, setting time, compressive and flexural strengths of mortar and concrete samples were determined up to 365 days. The study concluded that the portlandite [Ca(OH)2] content was considerably reduced whilst ettfingite formation were enhanced as a result of admixture reactions. The water demand and setting times of blended cements were lower than OPC with 5% admixture content but higher with increasing content. The mechanical test results also showed that Class 42.5N and 32.5R cements can be produced from the binary and ternary blends containing up to 10% and 20% admixtures, respectively.展开更多
Objective:To observe the clinical efficacy of triple needling plus moxibustion and Tanbo-plucking tender points in treating the third lumbar vertebra transverse process syndrome. Methods: Totally 108 patients with t...Objective:To observe the clinical efficacy of triple needling plus moxibustion and Tanbo-plucking tender points in treating the third lumbar vertebra transverse process syndrome. Methods: Totally 108 patients with the third lumbar vertebra transverse process syndrome were randomized into two groups, 56 cases in the observation group were intervened by triple needling method plus moxibustion and Tanbo-plucking tender points; 52 cases in the control group were by acupuncture plus moxibustion. The pain rating index(PRI), visual analogue scale (VAS), and present pain intensity (PPI) from the short-form McGill pain questionnaire (SF-MPQ) were observed before and after intervention for comparing the therapeutic efficacy. Results: The total effective rate was 96.4% in the observation group versus 76.9% in the control group, and the difference was statistically significant (P〈0.05). After intervention, the sensory-PRI, affective-PRI, totaI-PRI, VAS, and PPI scores were markedly changed in both groups (P〈0.05). The difference in comparing the change of clinical sign score was statistically significant between the two groups (P〈0.05). The follow-ups performed 4 weeks and 8 weeks after treatment showed that there were significant differences in comparing the relapse rate between the two groups (P〈0.05). Conclusion: Triple needling plus moxibustion and Tanbo-plucking tender points can produce a better efficacy in treating the third lumbar vertebra transverse process syndrome than acupuncture plus moxibustion alone, and the relapse rate is relatively low.展开更多
Objective:To observe the effect of complex reinforcing [Shao Shan Huo (Mountain-burning Fire)] and reducing [Tou Tian Liang (Heaven-penetrating Cooling)] manipulations on motion and balance of the lower limbs in ...Objective:To observe the effect of complex reinforcing [Shao Shan Huo (Mountain-burning Fire)] and reducing [Tou Tian Liang (Heaven-penetrating Cooling)] manipulations on motion and balance of the lower limbs in patients with subacute combined degeneration of the spinal cord (SCD). Methods:A total of 100 SCD cases were randomly allocated into an observation group and a control group by their visit sequence, 50 cases in each group. On the basis of Western medical treatment, cases in the observation group were also treated with acupuncture therapy plus complex reinforcing-reducing manipulation; whereas cases in the control group were only treated with the same Western medical treatment as those in the observation group. Before and 2 months after treatment, kinematic parameters including muscle force, muscle tone and range of motion of the hip and knee joints were measured. In addition, balancing parameters including the path length of center of pressure (COP), peripheral area, COP path length per unit area and rectangular area were also measured before and after treatment. Results:After treatment, there were statistical intra-group differences in COP path length, peripheral area, COP path length per unit area, left-right offset, rectangular area, coefficient of stability and coefficient of weight distribution (P〈0.01). There were statistical inter-group differences in muscle force, muscle tone and range of motion of hip and knee joints (P〈0.01). The total effective rate was 83.3% in the observation group, versus 60.0% in the control group, showing a statistical difference (P〈0.05). Conclusion:Complex reinforcing-reducing manipulations can improve the lower limb motion and balance in SCD patients.展开更多
LU considers that correct manipulations are essential to the therapeutic effect. Reinforcing and reducing manipulations are especially important for zang-fu problems. He summarized the typical reinforcing-reducing man...LU considers that correct manipulations are essential to the therapeutic effect. Reinforcing and reducing manipulations are especially important for zang-fu problems. He summarized the typical reinforcing-reducing manipulations: mountain-fire burning and heaven-penetrating cooling method as follows.展开更多
Strain of infrapatellar fat pad extensively occurs in people aged over 30 years, who often walk up hills or squat while working. The clinical manifestations are aching and weakness in the knee joints, aggravated when ...Strain of infrapatellar fat pad extensively occurs in people aged over 30 years, who often walk up hills or squat while working. The clinical manifestations are aching and weakness in the knee joints, aggravated when the knee joints are totally extended. Discomfort occurs in mild cases only when walking for long or going up and down the stairs. There is aching feeling in moderate cases when the patients are quiet. The pain is aggravated during exercises when the knee joints are half flexed and the patient can not stand up when squatting for prolonged periods of time. There are aching and weak feelings in the severe cases.展开更多
Objective: To observe the effect of complex reinforcing-reducing manipulations of acupuncture on flexion and extension angles of hip and knee in patients after surgical treatment of gluteus maximus contracture. 〈br...Objective: To observe the effect of complex reinforcing-reducing manipulations of acupuncture on flexion and extension angles of hip and knee in patients after surgical treatment of gluteus maximus contracture. 〈br〉 Methods: A total of 66 cases following surgery of gluteus maximus contracture were randomly allocated into an observation group and a control group by the random digits table, 33 in each group. In addition to basic treatment, cases in the observation group were treated with reducing manipulation [Tou T ian Liang (Heaven-penetrating Cooling)] on Zhibian (BL 54), Huantiao (GB 30) and Juliao (GB 29) on the affected side and reinforcing manipulation [Shao Shan Huo (Mountain-burning Fire)] on Biguan (ST 31), Futu (ST 32), Zusanli (ST 36), Fenglong (ST 40), Xuehai (SP 10), Diji (SP 8) and Yanglingquan (GB 34). Patients in the control group only received the same basic treatment as the observation group. The treatment was done once a day, 30 d for a course and a 1-week interval between two courses. Then the flexion and extension angles of hip and knee were evaluated using the Lokomat full automatic robot gait evaluation system after 3 courses of treatment. 〈br〉 Results:There were intra-group statistical differences in hip flexion angle on foot followed (HFA-FF), the maximum of hip flexion angle (MAX-HFA), the maximum of hip extension angle (MAX-HEA), knee flexion angle on foot followed (KFA-FF), the maximum of knee flexion angle on stance phase (MAX-KFA-TP) and the maximum of knee flexion angle on swing phase (MAX-KFA-WP) in the observation group and in HFA-FF, MAX-HEA and KFA-FF in the control group (P<0.05). There were between-group statistical differences in HFA-FF, MAX-HFA, MAX-HEA, KFA-FF and MAX-KFA-TP (P<0.05). 〈br〉 Conclusion: The complex reinforcing-reducing manipulations of acupuncture can effectively improve the hip/knee functions following surgery of gluteus maximus contracture.展开更多
文摘According to control theories, mine fires can be considered as an unsteady process after the normal ventilation system is disturbed. Applied the principal of physical chemistry and thermal fluid mechanics, the parameters models of the unsteady state system have been given, such as fuel combustion rate, heat of combustion, concentration, temperature, heat losses, heat resistance, work of expansion and heat pressure difference. The results of the calculation agree approximately with the results of the test. By the computer simulation, it is shown that the main factor of producing the throttling effect is the fire rate, second is the heat resistance and the heat pressure difference. The rate of heat flow that passes through the airway wall is the maximum on the surface, and decrease with time. The heat transfer progresses only within the range of 0.5 m away from theairway wall during combustion for 2 hours. It’s variable for the mass flux rate and the percentage concentration of the gas along the airway of the downstream. When the delayed time is very small, the variation can be neglected. Viscosity resistance is the main part of the heat resistance, second is the expansion resistance that is less than tens Pascal when Mach number is very small. Work of expansion is principally turned into heat losses, only a very small part is consumed by the work of the heat resistance and the inertia acceleration.
文摘Large amounts of volcanic debris-avalanche deposits, which take the shape of hummocks, are distributed around the peripheries of the Laoheishan volcano and Huoshaoshan volcano in Wudalianchi World Geopark. In earlier times, they were called "satellite volcanoes", namely, freestanding volcanoes. This paper points out that these deposits actually came from the collapse of the cones of these two volcanoes. When the lava flow spilled out at the base of the slope of the cones, the slope broke up and collapsed under the action of gravity. Later, ravines were formed on the slope. Caved slope clastics, accompanying lava flow, accumulated at the rims of the volcano cones. Although some accumulations may form very large cones, they are not volcanoes, but deposits of volcanic debris avalanches.
文摘This paper investigates the properties of hydrated binary and ternary blended cements using limestone and calcined clay pozzolan as supplementary cementitious materials. The blended cements were hydrated and their phase compositions were evaluated by thermogravimetric and powder X-ray diffraction at 28 days. The morphology of the samples was also determined. The water demand, setting time, compressive and flexural strengths of mortar and concrete samples were determined up to 365 days. The study concluded that the portlandite [Ca(OH)2] content was considerably reduced whilst ettfingite formation were enhanced as a result of admixture reactions. The water demand and setting times of blended cements were lower than OPC with 5% admixture content but higher with increasing content. The mechanical test results also showed that Class 42.5N and 32.5R cements can be produced from the binary and ternary blends containing up to 10% and 20% admixtures, respectively.
基金supported by Shanghai Community Project of Traditional Chinese Medicine,No:SHJCZYYNLTS-SQZYYTS-21~~
文摘Objective:To observe the clinical efficacy of triple needling plus moxibustion and Tanbo-plucking tender points in treating the third lumbar vertebra transverse process syndrome. Methods: Totally 108 patients with the third lumbar vertebra transverse process syndrome were randomized into two groups, 56 cases in the observation group were intervened by triple needling method plus moxibustion and Tanbo-plucking tender points; 52 cases in the control group were by acupuncture plus moxibustion. The pain rating index(PRI), visual analogue scale (VAS), and present pain intensity (PPI) from the short-form McGill pain questionnaire (SF-MPQ) were observed before and after intervention for comparing the therapeutic efficacy. Results: The total effective rate was 96.4% in the observation group versus 76.9% in the control group, and the difference was statistically significant (P〈0.05). After intervention, the sensory-PRI, affective-PRI, totaI-PRI, VAS, and PPI scores were markedly changed in both groups (P〈0.05). The difference in comparing the change of clinical sign score was statistically significant between the two groups (P〈0.05). The follow-ups performed 4 weeks and 8 weeks after treatment showed that there were significant differences in comparing the relapse rate between the two groups (P〈0.05). Conclusion: Triple needling plus moxibustion and Tanbo-plucking tender points can produce a better efficacy in treating the third lumbar vertebra transverse process syndrome than acupuncture plus moxibustion alone, and the relapse rate is relatively low.
基金supported by Scientific Research Project of Hebei Provincial Administration Bureau of Traditional Chinese Medicine,No.2014188Hebei Tangshan Science and Technology Project,No.121302118b~~
文摘Objective:To observe the effect of complex reinforcing [Shao Shan Huo (Mountain-burning Fire)] and reducing [Tou Tian Liang (Heaven-penetrating Cooling)] manipulations on motion and balance of the lower limbs in patients with subacute combined degeneration of the spinal cord (SCD). Methods:A total of 100 SCD cases were randomly allocated into an observation group and a control group by their visit sequence, 50 cases in each group. On the basis of Western medical treatment, cases in the observation group were also treated with acupuncture therapy plus complex reinforcing-reducing manipulation; whereas cases in the control group were only treated with the same Western medical treatment as those in the observation group. Before and 2 months after treatment, kinematic parameters including muscle force, muscle tone and range of motion of the hip and knee joints were measured. In addition, balancing parameters including the path length of center of pressure (COP), peripheral area, COP path length per unit area and rectangular area were also measured before and after treatment. Results:After treatment, there were statistical intra-group differences in COP path length, peripheral area, COP path length per unit area, left-right offset, rectangular area, coefficient of stability and coefficient of weight distribution (P〈0.01). There were statistical inter-group differences in muscle force, muscle tone and range of motion of hip and knee joints (P〈0.01). The total effective rate was 83.3% in the observation group, versus 60.0% in the control group, showing a statistical difference (P〈0.05). Conclusion:Complex reinforcing-reducing manipulations can improve the lower limb motion and balance in SCD patients.
基金The Key Laboratory of Acupuncture-immune Effects of State Administration of Traditional Chinese MedicineShanghai Leading Academic Discipline Project (S30304)
文摘LU considers that correct manipulations are essential to the therapeutic effect. Reinforcing and reducing manipulations are especially important for zang-fu problems. He summarized the typical reinforcing-reducing manipulations: mountain-fire burning and heaven-penetrating cooling method as follows.
文摘Strain of infrapatellar fat pad extensively occurs in people aged over 30 years, who often walk up hills or squat while working. The clinical manifestations are aching and weakness in the knee joints, aggravated when the knee joints are totally extended. Discomfort occurs in mild cases only when walking for long or going up and down the stairs. There is aching feeling in moderate cases when the patients are quiet. The pain is aggravated during exercises when the knee joints are half flexed and the patient can not stand up when squatting for prolonged periods of time. There are aching and weak feelings in the severe cases.
基金supported by Tangshan City Science&Technology Program(No.121302118b)
文摘Objective: To observe the effect of complex reinforcing-reducing manipulations of acupuncture on flexion and extension angles of hip and knee in patients after surgical treatment of gluteus maximus contracture. 〈br〉 Methods: A total of 66 cases following surgery of gluteus maximus contracture were randomly allocated into an observation group and a control group by the random digits table, 33 in each group. In addition to basic treatment, cases in the observation group were treated with reducing manipulation [Tou T ian Liang (Heaven-penetrating Cooling)] on Zhibian (BL 54), Huantiao (GB 30) and Juliao (GB 29) on the affected side and reinforcing manipulation [Shao Shan Huo (Mountain-burning Fire)] on Biguan (ST 31), Futu (ST 32), Zusanli (ST 36), Fenglong (ST 40), Xuehai (SP 10), Diji (SP 8) and Yanglingquan (GB 34). Patients in the control group only received the same basic treatment as the observation group. The treatment was done once a day, 30 d for a course and a 1-week interval between two courses. Then the flexion and extension angles of hip and knee were evaluated using the Lokomat full automatic robot gait evaluation system after 3 courses of treatment. 〈br〉 Results:There were intra-group statistical differences in hip flexion angle on foot followed (HFA-FF), the maximum of hip flexion angle (MAX-HFA), the maximum of hip extension angle (MAX-HEA), knee flexion angle on foot followed (KFA-FF), the maximum of knee flexion angle on stance phase (MAX-KFA-TP) and the maximum of knee flexion angle on swing phase (MAX-KFA-WP) in the observation group and in HFA-FF, MAX-HEA and KFA-FF in the control group (P<0.05). There were between-group statistical differences in HFA-FF, MAX-HFA, MAX-HEA, KFA-FF and MAX-KFA-TP (P<0.05). 〈br〉 Conclusion: The complex reinforcing-reducing manipulations of acupuncture can effectively improve the hip/knee functions following surgery of gluteus maximus contracture.