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991.
In the conditions of market economy, the scope of firm's internal auditing is ever expanded and even covers the firm's operation. From the internal auditing perspective, how to audit and evaluate market innovation (MI), the key part of marketing management and innovation management, is studied. It is suggested that innovation elements, the degree of MI, region of MI, direction of MI, source of MI, obstacle of MI, risk of MI, be audited and evaluated. Finally, the suitable system of indices and evaluating method for auditing are introduced. 相似文献
992.
Liu Longquan 《保鲜与加工》1991,(1)
In this paper,the frequency of space frame structure is obtained by a wavefront and an iterated power method.The computer internal storage is greatly saved.The solution so obtalned is quite in agreement with the finite solution. 相似文献
993.
In the construction of high-rise and long-span reinforced concrete structures, many safety accidents result from the defect of the analysis and erection of scaffold. To solve the problem, an accurate FEM model is adopted to analyze the scaffold and is compared with the common simplified models in practice. The comparison shows that the simplified models may do give unsafe results and so several suggestions for improvement are put forward. 相似文献
994.
995.
No information is available on the role of particle size of canola (Brassica napus) residue in altering C mineralization and nutrient (N, S) cycling in soil. We studied decomposition of canola residue (at 20±1 °C temperature and 10% moisture (w/w) for 6 months to elucidate the effect of its particle size (<1, 5-7, and 20-25 mm) on dynamics of C, N and S turnover following incorporation into a nutrient-poor sandy soil.Averaged over time, particle size of canola residue did not significantly affect C mineralization rate, the size of microbial-C and microbial-N pools, or the extent of CaCl2-extractable S immobilization, but altered the extent of mineral-N immobilization and water-soluble organic C (W-SOC) depletion. A rapid decrease in C mineralization rate in the first week matched the rapid depletion of W-SOC, especially for the <1 mm residue treatment. Over 6 months, mineral-N in the amended soils rarely increased beyond the starting level (0.8-1 mg kg−1 soil for all the treatments), whereas nitrate-N increased 19-fold in the non-amended soil. This suggests an occurrence of strong N immobilization in the amended soils; such immobilization was high for the <1 mm residue treatment. On a cumulative basis, 33-35% of C added in canola residues to the soil was respired in 6 months. The microbial-C and microbial-N pools peaked by day 4 for all the residue treatments (compared to time zero, 58-122% increase for microbial-C and 36-57% for microbial-N). Averaged over time, amended soils contained approx. 40% more microbial-C and microbial-N than the non-amended soil. An addition of canola residue (regardless of the size) to soil increased the extractable S significantly (3.4-fold) on day 0; this initially increased S level decreased by one-third over 6 months. In conclusion, particle size of canola residue did not affect temporal pattern of C and S mineralization in a nutrient-poor sandy soil, but altered N cycling. 相似文献
996.
探讨了生物制品冻干过程中,不同阶段油温、板温、苗温、箱温的变化规律,并将其同冻干时间有机结合起来,用于制订冻干曲线。 相似文献
997.
选用84头20 kg左右的生长猪,随机分为两个组,每个组3个重复,每重复14头。对照组饲喂添加抗生素200 mg/kg的日粮,试验组饲喂添加0.1%微生态制剂的日粮,试验期为28 d。试验结果表明,与对照组相比较,试验组生长猪的平均日采食量和平均日增重有增加的趋势(P>0.05),平均料肉比降低了0.34(P>0.05),腹泻率降低了4.94%(P<0.01);在提高生长猪日粮养分消化率方面,微生态制剂具有与抗生素相同的作用(P>0.05);粪样中的大肠杆菌数量显著降低(P<0.05),同时粪样中乳酸菌和双歧杆菌数量都有升高的趋势(P>0.05)。 相似文献
998.
999.
1000.
晋南地区五种野菜营养成分分析 总被引:1,自引:0,他引:1
对晋南地区5种常见野菜地肤、马齿苋、藜、荠菜和苣荬菜的粗蛋白、维生素C、还原性糖、酸性物质、硝酸盐和亚硝酸盐含量进行了分析,以期为晋南地区野菜开发及其食用价值提供科学依据和参考价值。结果表明:藜的维生素C含量最高,其次是荠菜和地肤,马齿苋中维生素C含量最少;荠菜中粗蛋白含量最高,地肤、藜、马齿苋的粗蛋白含量依次下降;荠菜的酸性物质含量最高,马齿苋次之,藜的酸性物质含量最低;藜中还原糖的含量最高,荠菜次之,马齿苋还原糖的含量最少;藜的硝酸盐含量和亚硝酸盐含量均较高,超出安全食用范围。 相似文献