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会计信息是企业内部主要由会计人员提供的,反映企业经营状况、资产负债、盈利能力等指标数据,供投资者和经营者使用的信息。会计信息失真是目前广泛存在的,造成愈演愈烈的会计信息失真有多方面的因素,本文从内外两方面来探析造成会计信息失真的原因,并提出相应的对策。 相似文献
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反相HPLC同时测定产琥珀酸放线杆菌发酵液中的有机酸与葡萄糖 总被引:10,自引:0,他引:10
提出了一种利用高效液相色谱法同时分析产琥珀酸放线杆菌发酵液中葡萄糖和有机酸的方法。在EclipseXDB C8(150mm×Φ4.6mm,5μm)色谱柱上,以5mmol LH2SO4溶液(pH2.5)作流动相,流速为1mL min,采用示差折光检测器,一次进样可同时定性及定量分析待测试样中的有机酸及葡萄糖,每一样品的分析时间不超过9min。确定了测定各物质的工作曲线的回归方程、线性范围、相关系数和检出限。测定发酵液中葡萄糖、琥珀酸和副产物乳酸的相对标准偏差在0.41%~0.89%范围内,平均回收率在99.6%~100.8%之间。 相似文献
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A food chain made up of two typical algae and a zooplankton was considered. Based on ecological eutrophication, interaction of the algal and the prey of the zooplankton, a nutrient nonlinear dynamic system was constructed. Using the methods of the modern nonlinear dynamics, the bifurcation behaviors and stability of the model equations by changing the control parameter r were discussed. The value of r for bifurcation point was calculated, and the stability of the limit cycle was also discussed. The result shows that through quasi-periodicity bifurcation the system is lost in chaos. 相似文献
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A novel coordination complex [Zn(bipy)2(H2O)4]·L·3H2O (1, bipy = 4,4'-bipyridine, LHNa = aniline-2,5-disulfonic acid monosodium salt) has been synthesized from LHNa by using hydrothermal method and structurally characterized. The result indicates that complex 1 belongs to the monoclinic system, space group P21/c with a = 20.392(3), b = 7.4052(12), c = 23.843(3) , β = 116.253(10)°, V = 3.2291(8) 3, Z = 4, Dc = 1.553 g·cm-3, μ = 0.962 mm-1, F(000) = 1568, and the final R = 0.0497 and wR = 0.1290. The complex 1 has a 0-D discrete structure, and generates an infinite 3-D network with the aid of O–H…O hydrogen bonds and π-π interactions. 相似文献
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