Experiments were conducted in an indoor soil bin filled with sandy clay loam soil. Tests were carried out with tillage tines to study the effect tool width on soil disturbance and draught. Depth of operation was held ...Experiments were conducted in an indoor soil bin filled with sandy clay loam soil. Tests were carried out with tillage tines to study the effect tool width on soil disturbance and draught. Depth of operation was held constant at 35 mm and then at 70 mm while speed was varied at three levels of 1.0, 3.6 and 9.0 km/h. The widths of the tines tested were 10, 20, 31, 40, 51, 88, 126, 163 and 200 mm. The cone penetration resistance of the soil varied from 400 to 600 kPa. Draught was measured with a load cell while soil disturbance was measured with a profile meter and meter rule. Draught increased at a decreasing rate with tine width. Quadratic models best fitted the data points with high R2 values. The increase in draught was affected by the forward speed since higher draught values were obtained at higher speed. Results show that the parameters of soil disturbance increased with increase in tine width, except height of ridge （hr）, which did not show any specific trend. The specific draught was highest （10.63 N/cm） with tine T20 while Tine T1 had the least specific draught of 5.2 N/cm.展开更多
The objectives of the study were to examine the effects of draught work on carcass characteristics, meat yield potential, and distribution along primal cuts in Hararghe highland bulls fed on net energy requirement bas...The objectives of the study were to examine the effects of draught work on carcass characteristics, meat yield potential, and distribution along primal cuts in Hararghe highland bulls fed on net energy requirement basis. Twelve bulls were sorted into three groups of four animals each and assigned to three treatment hours: control (0), 4, or 6, using a complete randomized design (CRD). The results of the study show that there are no significant differences (p > 0.05) in slaughter weight, hot carcass weight (HCW), chilling loss, total edible and non-edible offal, fat thickness (FT), deboned meat yield (kg), meat to bone ratio, muscle distribution, and proportion of kidney, pelvic, and heart fat (KPH%) among the treatment groups. However, the hot carcass-based dressing percentage was significantly lowered (p < 0.05) in bulls that work 4 or 6 hours a day. Meat yield was strongly correlated with HCW (r = 0.74) and FT (r = 0.73). Therefore, the number of hours the bull spent on draught work did not negatively impact meat yield or quality. Consequently, the research suggests that utilizing Hararghe highland bulls for draught service, four or six hours a day is viable for dual advantages: crop cultivation and marketable carcass.展开更多
Draught beer is a new member of the beer family in China. It is becoming fashionable in markets inside and outside China with its fresh, pure and refreshing taste. Drinking draught beer has become the vogue these days...Draught beer is a new member of the beer family in China. It is becoming fashionable in markets inside and outside China with its fresh, pure and refreshing taste. Drinking draught beer has become the vogue these days. "Huasi" draught beer is a kind of fresh beer produced by the Beijing Huasi Lubao Beer Co. Ltd. through years of painstaking research with the characteristics of pure and refreshing taste, high nutrition and a genuine hops flavour. Using selected materials of high quality,展开更多
According to'Report on Market Demand Forecast and Investment Strategy Analysis of China Power Lithium Battery Industry'of the Qianzhan Industry Institute,currently lithium demand is mainly concentrated in mobi...According to'Report on Market Demand Forecast and Investment Strategy Analysis of China Power Lithium Battery Industry'of the Qianzhan Industry Institute,currently lithium demand is mainly concentrated in mobile battery and glass,lubricating oil markets,whose percentage is up to 85%,market share of electric vehicle and ESS energy backup展开更多
The xylem embolism vulnerability and refilling ability were measured in one-year-old twigs of three draught-tolerant tree species, which were Ulmus pumila L., Hippophae rhamnoides L., and Corylus heterophylla Fisch., ...The xylem embolism vulnerability and refilling ability were measured in one-year-old twigs of three draught-tolerant tree species, which were Ulmus pumila L., Hippophae rhamnoides L., and Corylus heterophylla Fisch., and three types of vulnerability curves for them were also established. The results showed that the water potential threshold for inducing embolism in three species was -0 1-0 3MPa, and the embolism reached its maximum value at the water potential of -2 5-3 5MPa. The xylem embolism vulnerability of three species was in the order of Hippophae> Ulmus> Corylus. The refilling of embolized xylem could occur while the water potential is below zero in all the species. In Hippophae, fully restoring occurred after thirty minutes under the water potential of -0 5MPa and -1 0MPa, but for Ulmus and Corylus, the restoration could reach about 90% in thirty minutes under the water potential of -0 60MPa and -0 34MPa, respectively. Ulmus could restore fully through one night (12hours) under the water potential of -0 59MPa. The refilling capacity of three species was Hippophae> Ulmus> Corylus . The xylem of the three draught-tolerant species is not only very vulnerable to embolization or very sensible to water stress but also capable of refilling its embolized xylem in a short period of time. Vulnerable and drought-tolerant species had significant xylem embolism in higher water potential, which decreased the hydraulic conductivity so that limited water loss. Drought-tolerant species had more ability to refill its embolized xylem in a short period of time. These were the ways through which trees resist and tolerate drought or water stress.展开更多
文摘Experiments were conducted in an indoor soil bin filled with sandy clay loam soil. Tests were carried out with tillage tines to study the effect tool width on soil disturbance and draught. Depth of operation was held constant at 35 mm and then at 70 mm while speed was varied at three levels of 1.0, 3.6 and 9.0 km/h. The widths of the tines tested were 10, 20, 31, 40, 51, 88, 126, 163 and 200 mm. The cone penetration resistance of the soil varied from 400 to 600 kPa. Draught was measured with a load cell while soil disturbance was measured with a profile meter and meter rule. Draught increased at a decreasing rate with tine width. Quadratic models best fitted the data points with high R2 values. The increase in draught was affected by the forward speed since higher draught values were obtained at higher speed. Results show that the parameters of soil disturbance increased with increase in tine width, except height of ridge （hr）, which did not show any specific trend. The specific draught was highest （10.63 N/cm） with tine T20 while Tine T1 had the least specific draught of 5.2 N/cm.
文摘The objectives of the study were to examine the effects of draught work on carcass characteristics, meat yield potential, and distribution along primal cuts in Hararghe highland bulls fed on net energy requirement basis. Twelve bulls were sorted into three groups of four animals each and assigned to three treatment hours: control (0), 4, or 6, using a complete randomized design (CRD). The results of the study show that there are no significant differences (p > 0.05) in slaughter weight, hot carcass weight (HCW), chilling loss, total edible and non-edible offal, fat thickness (FT), deboned meat yield (kg), meat to bone ratio, muscle distribution, and proportion of kidney, pelvic, and heart fat (KPH%) among the treatment groups. However, the hot carcass-based dressing percentage was significantly lowered (p < 0.05) in bulls that work 4 or 6 hours a day. Meat yield was strongly correlated with HCW (r = 0.74) and FT (r = 0.73). Therefore, the number of hours the bull spent on draught work did not negatively impact meat yield or quality. Consequently, the research suggests that utilizing Hararghe highland bulls for draught service, four or six hours a day is viable for dual advantages: crop cultivation and marketable carcass.
文摘Draught beer is a new member of the beer family in China. It is becoming fashionable in markets inside and outside China with its fresh, pure and refreshing taste. Drinking draught beer has become the vogue these days. "Huasi" draught beer is a kind of fresh beer produced by the Beijing Huasi Lubao Beer Co. Ltd. through years of painstaking research with the characteristics of pure and refreshing taste, high nutrition and a genuine hops flavour. Using selected materials of high quality,
文摘According to'Report on Market Demand Forecast and Investment Strategy Analysis of China Power Lithium Battery Industry'of the Qianzhan Industry Institute,currently lithium demand is mainly concentrated in mobile battery and glass,lubricating oil markets,whose percentage is up to 85%,market share of electric vehicle and ESS energy backup
文摘The xylem embolism vulnerability and refilling ability were measured in one-year-old twigs of three draught-tolerant tree species, which were Ulmus pumila L., Hippophae rhamnoides L., and Corylus heterophylla Fisch., and three types of vulnerability curves for them were also established. The results showed that the water potential threshold for inducing embolism in three species was -0 1-0 3MPa, and the embolism reached its maximum value at the water potential of -2 5-3 5MPa. The xylem embolism vulnerability of three species was in the order of Hippophae> Ulmus> Corylus. The refilling of embolized xylem could occur while the water potential is below zero in all the species. In Hippophae, fully restoring occurred after thirty minutes under the water potential of -0 5MPa and -1 0MPa, but for Ulmus and Corylus, the restoration could reach about 90% in thirty minutes under the water potential of -0 60MPa and -0 34MPa, respectively. Ulmus could restore fully through one night (12hours) under the water potential of -0 59MPa. The refilling capacity of three species was Hippophae> Ulmus> Corylus . The xylem of the three draught-tolerant species is not only very vulnerable to embolization or very sensible to water stress but also capable of refilling its embolized xylem in a short period of time. Vulnerable and drought-tolerant species had significant xylem embolism in higher water potential, which decreased the hydraulic conductivity so that limited water loss. Drought-tolerant species had more ability to refill its embolized xylem in a short period of time. These were the ways through which trees resist and tolerate drought or water stress.
