1.Concentrations of heavy metals and organic matter in the bottom sediments of Jiaozhou Bay were determined and the average enrichment factors(AEFs) were used simultaneously to evaluate the extent of metal enrichment-contamination. Results show that heavy metal contamination in this bay could be divided into three groups: negligible to low contamination(AEFs
测定了胶州湾表层沉积物中重金属和有机质的含量,并用平均富集因子(Average Enrichment Factors,AEF)进行污染状况评价,发现胶州湾表层沉积物重金属污染可分为3类:轻度污染(AEFs
2.tropicalis was mutated by DES and ultraviolet light, the Alk - mutants were enriched (first step enrichment had up to 8 fold in one round of enrichment) by treating with nystatin in medium SEL1 1. Then the mutagen treated cells were cultured in medium YPD containing chorpromazin for further enriching (the second step enrichment had up to 3 fold in one round of enrichment) the mutants with increasedα,ω oxidation capacity.
热带假丝酵母经过硫酸二乙酯和紫外诱变 ,其中的 β-氧化减弱或阻断的细胞在含有制霉菌素的 SEL1-1培养基中得到浓缩 (浓缩效率为 8倍 ) ; α、ω-氧化增强的突变株在含有氯丙嗪的 YPD培养基中被进一步浓缩 (浓缩效率为 3倍 )。
3.Clay enrichment and nutrient enrichment occurred in sediment,but the enrichment ratio was different: Clay was 1.23 in watermelon land and 1.20 in rape land,total nitrogen and rapidly available phosphorus was higher than 1.3,and total phosphorus and hydrolysable nitrogen was 1.1~1.3.
流失泥沙具有富集粘粒和富集养分的特性,油菜地与西瓜地粘粒富集率分别为1.23和1.20,两样地全氮与速效磷的富集率都在1.3以上,而全磷和水解氮富集率基本处在1.1~1.3之间。
4.Add two Listeria monocytogenes dilutions into cod enrichment broth,when the addition number of Listeria monocytogenes was 55.5 per 100ml in cod enrichment broth,the detection result from the fish enrichment broth was 110 per 100 ml (MPN).
将两种稀释度(10-4和10-7)的单核细胞增生李氏菌液加入鳕鱼增菌液中,加入到鳕鱼增菌液的菌数为55.5个/100 ml,按最可能数计数法(MPN)能检测到的菌数为110个/100 ml,增菌液DFB培养48 h后,能检测到的最低浓度为0.055个/ml.
5.Behaviors of 9 chemical elements Si, Al, Fe, Ca, Mg, Mn, K, Na, P within three soil profiles respectively representative of Dystri gelic Cambisol, Fibri gelic Histosol, Relic Ornithosol and their enrichment and migration in the soil horizons were quantitatively demonstrated by the method of the enrichment coefficient analysis. The results obtained suggest that enrichment and migration of elements differ greatly within profiles of three soil types on Fildes Peninsula. Some elements become intensively enriched within some soils while they get strongly lost from other profiles.
对 Si、Al、Fe、Ca、Mg、Mn、K、Na和 P等元素在南极菲尔德斯半岛地区三个代表性土壤剖面 (不饱和寒冻雏形土、纤维质寒冻有机土和鸟成土 )中的迁移与富集规律进行了研究 ,结果表明 ,本区土壤中物质移动和元素迁移现象明显 ;
6.The optimum enrichment of Qinshan phase Ⅲ CANDU fuel was determined and using this optimum enrichment fuel might save 53 tons of natural uranium resource, decrease 116 tons of the spent fuel to be disposed and US$ 8?15 million of fuel expense annually.
研究发现,秦山3期CANDU堆使用最优富集度下的SEU燃料,每年将节省天然铀(NU)53t,减少乏燃料116t,节省燃料循环费用约6700万元.
7.Through a study on the stratigraphy,structure,mineralization,and the features of major minerals in the Dabeiwu gold deposit,theauthor holds that the metallogenic model of gold deposit underwentthree stages,that is,the enrichment stage of the dispersed gold cau-sed by the metallogenic stage of gold enrichment resulted in the bri-ttle shearing as well as the gold superimposed metallogenic stage res-ulted by the early stage of Yanshanian magmatism.
本文通过对大背坞金矿的地层、构造、矿化、蚀变及主要矿物特征的研究，初步认为该金矿为三阶段成矿模式，即韧性剪切作用使分散金初步富集阶段，韧性剪切作用使金富集成矿阶段和燕山早期岩浆活动造成金的迭加成矿阶段。
8.ENRICHMENT OF LITHIUM ISOTOPES BY HIGH PRESSURE ION EXCHANGE DISPLACEMENT CHROMATOGRAPHY (Ⅲ)--SEMICONTINUOUS ENRICHMENT
高压离子交换排代法富集锂同位素(Ⅲ)——半连续富集
9.Environmental samples were cultured in a special selective enrichment culture for nitrite-oxidizing bacteria, and identified by biochemical methods, gram-stain reaction, PCR and electron microscope. 10 strains of bacteria were screened and isolated by enrichment culture from soil and sewage, and were named X01～X10 in turn, which were all gram-negative microorganisms and rod or cocci bacteria.
采用硝化细菌选择培养基从土壤、污水中筛选获得了 10株细菌 (X0 1～X10 ) ,经革兰氏染色及生理生化鉴定均为革兰氏阴性菌 ,呈杆状或球状 ,均能够利用亚硝酸盐 .
10.The reads show that gas flow can be well-proportioned distributed in hearth, and effective quantity of gas channels increased under oxygen-enrichment operation with stable air flowrate, thus oxygen-enrichment operation with stable air flowrate is an effective way for improving the productivity of blast furnace.
结果表明：稳定风量的富氧操作方式有利于煤气流在炉缸的均匀分布以及有效煤气通道量增加，是提高高炉产能的有效措施。
