In order to conduct the comparison of pig raising under different raising modes, a total of 40 pigs with the weights of 20 - 30 kg were randomly divided into two groups （experimental group , fermentation bed; control...In order to conduct the comparison of pig raising under different raising modes, a total of 40 pigs with the weights of 20 - 30 kg were randomly divided into two groups （experimental group , fermentation bed; control group, cement ground）. During a 81-day-test, pigs in the two groups were fed with same diets, and growth performance of pigs was compared. After the feeding, six pigs of each group were slaughtered in order to examine meat quality. The results showed that average daily gain of pigs in test group was 17.93% higher than that in control group, difference between the two groups was significant. Feed weight ratio of pigs in test group was 14.73% lower than that in control group, difference between the two groups was not significant. Color, water loss, drip loss, intramuscular fat, etc. of meat in test group were all better than that in control group, difference of drip loss between the two groups was extremely significant, while differences of col- or, water loss and intramuscular fat （IMF） between the two groups were not different. Pig raising by bio-bed system could improve growth performance and pork quality comparing with cement ground system.展开更多
Based on the theory of Fuzzy Mathematics and Expert System, this paper presents the quantitative expression method of bedded and joint bearing rock mass quality "Stratum Quality Index"(SQI for short), and al...Based on the theory of Fuzzy Mathematics and Expert System, this paper presents the quantitative expression method of bedded and joint bearing rock mass quality "Stratum Quality Index"(SQI for short), and also introduces the successful application of the method in estimating stratum movement parameters.展开更多
On the basis of the analysis of coal bed gas pressure in deep mine, and the coal bed permeability ( k ) and the characteristic of adsorption parameter ( b ) changing with temperature, the author puts forward a new cal...On the basis of the analysis of coal bed gas pressure in deep mine, and the coal bed permeability ( k ) and the characteristic of adsorption parameter ( b ) changing with temperature, the author puts forward a new calculating method of gas content in coal seam influenced by in situ stress grads and ground temperature. At the same time, the contrast of the measuring results of coal bed gas pressure with the computing results of coal bed gas pressure and gas content in coal seam in theory indicate that the computing method can well reflect the authenticity of gas content in coal seam,and will further perfect the computing method of gas content in coal seam in theory,and have important value in theory on analyzing gas content in coal seam and forecasting distribution law of gas content in coal seam in deep mine.展开更多
基金Supported by Science and Technology Industrialization(Agriculture)Project(HL2011013)of Nantong City,Jiangsu Province
文摘In order to conduct the comparison of pig raising under different raising modes, a total of 40 pigs with the weights of 20 - 30 kg were randomly divided into two groups （experimental group , fermentation bed; control group, cement ground）. During a 81-day-test, pigs in the two groups were fed with same diets, and growth performance of pigs was compared. After the feeding, six pigs of each group were slaughtered in order to examine meat quality. The results showed that average daily gain of pigs in test group was 17.93% higher than that in control group, difference between the two groups was significant. Feed weight ratio of pigs in test group was 14.73% lower than that in control group, difference between the two groups was not significant. Color, water loss, drip loss, intramuscular fat, etc. of meat in test group were all better than that in control group, difference of drip loss between the two groups was extremely significant, while differences of col- or, water loss and intramuscular fat （IMF） between the two groups were not different. Pig raising by bio-bed system could improve growth performance and pork quality comparing with cement ground system.
文摘Based on the theory of Fuzzy Mathematics and Expert System, this paper presents the quantitative expression method of bedded and joint bearing rock mass quality "Stratum Quality Index"(SQI for short), and also introduces the successful application of the method in estimating stratum movement parameters.
文摘On the basis of the analysis of coal bed gas pressure in deep mine, and the coal bed permeability ( k ) and the characteristic of adsorption parameter ( b ) changing with temperature, the author puts forward a new calculating method of gas content in coal seam influenced by in situ stress grads and ground temperature. At the same time, the contrast of the measuring results of coal bed gas pressure with the computing results of coal bed gas pressure and gas content in coal seam in theory indicate that the computing method can well reflect the authenticity of gas content in coal seam,and will further perfect the computing method of gas content in coal seam in theory,and have important value in theory on analyzing gas content in coal seam and forecasting distribution law of gas content in coal seam in deep mine.
