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 if graph G contains no circle of lenth at least four,then t(G)= Δ (G)+1 ; 若图G不含有长至少为4的圈,则t(G)=Δ+1; 短句来源 A graph is called K 1,n free if it contains no K 1,n as an induced subgraph. 不含有子图 K1,n的图称为 K1,n- free图 ; 短句来源 A graph is called K 1,n free if it contains no K 1,n as an induced subgraph. 不含有子图 K1 ,n的图称为 K1 ,n- free图 . 短句来源 A graph is called K_(1,n)-free if it contains no K_(1,n) as an induced subgraph. 图被称为K1,n-free图,如果它不含有导出子图K1,n。 短句来源 For a simple digraph D=(V,E), a subset FV is called a feedback vertex set for D if the induced subgraph by V\F contains no directcycles. 对简单有向图D=(V,E),顶点子集F V,如果由V\F导出的子图不含有向圈,则称F是D的反馈点集。 短句来源 更多
 does not contain
 It is shown that let G is a connected,N 2-locally connected K 1,4 -restricted graph with δ≥6,which does not contain an induced subgraph H isomorphic to one of G 1,G 2 and G 3,then G is hamiltonian. 证明如下结论 :设G是连通、N2 -局部连通、δ≥ 6的K1 ,4 -受限图 ,如果G中不含有同构于G1 ,G2 或G3的导出子图H ,则G含哈密顿圈 . 短句来源 The cycle structure of σ- LFSR is consistent with that of the determinant of the corresponding polynomial matrix if and only if the feedback polynomial of - LFSR does not contain nontrivial factor over F2,. The counting formula of the number of σ - LFSR with inconsistent cycle structure is also showed in that part. σ-LFSR的状态图的圈结构与对应的多项式矩阵的行列式的圈结构一致的充要条件为σ-LFSR的反馈多项式不含有非平凡的F_2上的因式，给出了圈结构不一致的σ-LFSR的计数公式； 短句来源 On the basis of the critical plane approach for multiaxial fatigue damage, a multiaxial fatigue damage parameter based on the shear form is presented by combining the behavior of multiaxial fatigue damage and the crack initiation and propagation. The proposed multiaxial fatigue damage parameter does not contain the material constant. 在多轴损伤临界面的基础上，结合多轴疲劳损伤和裂纹萌生与扩展的特点，提出一种剪切形式的多轴疲劳损伤参量，该参量不含有材料常数； 短句来源 We measured the size of the translocated chromosome segment and its gene consti-tution. The result obtained shows that the translocated chromosome segment does not contain loci, os (0.0), e (36.4), od(49.6), it contains only the locus +mch(21.5). A genetic map of the gene constitution of translocated chromosome is drawn. 经测定,易位片段不含有os(0.0)、c(36.4)、od(49.6)等座位,仅包含+~sch(21.5)座位附近很有限的区域,从而给出易位染色体基因组成的模式图。 短句来源 ClO_2 pretreatment results in lower organic matters concentration than that of both Cl_2 pretreatment and source water. Water sample after ClO_2 pretreatment does not contain prohibited pollutants such as THMS, hydroxybenzene and aldehyde. 预投加ClO2水样的有机物含量也少于预投Cl2的水样和原水水样,并且不含有三氯甲烷和酚、醛类等重点控制的有机污染物质; 短句来源 更多
 did not contain
 The culture of the experimental group contained bFGF, and the culture of the control group did not contain bFGF. 方法 应用新霉素破坏豚鼠离体椭圆囊毛细胞,实验组培养液含有bFGF,对照组培养液则不含有bFGF。 短句来源 Results V. cholera O139 contained the genomic sequences of CTX A2 B as well as O1 V. cholera , indicating that their homologous nucleotidies was 96.9%～98.7%, and other vibrios did not contain CTX. 结果　O13 9群霍乱弧菌和O1群含有相同的霍乱肠毒素 (CTX)基因 ,核苷酸序列同源性为 96 9%～ 98 7%。 其它致病弧菌不含有CTX基因。 短句来源 And bioinformatic analysis revealed that about 11% of the identified proteins were functionally unknown and did not contain any conserved domain associated with known activities. 生物信息学分析表明,在我们鉴定的蛋白质中有11%的蛋白质功能未知并且不含有任何已知的功能结构域。 短句来源 α-smooth muscle actin (SMA) and actin expressed. They reacted with monoclone antibody 3G5, but did not contain von Willebrand factor or keratin. 表达α-平滑肌肌动蛋白,肌动蛋白以及3G5阳性; 不含有von Willebrand因子和角蛋白; 短句来源 Tm Cel12B did not contain a cellulose-binding domain(CBD)and lacked activity on crystalline cellulose. Tm XynA is composed of catalytic domain(CD)and cellulose-binding domain(CBD). As such,the gene of CBD from Tm XynA was fused at the carboxyl-terminus of Tm Cel12B and recombinant plasmid pET-20b-Cel12B-CBD was obtained. 海栖热袍菌内切葡聚糖酶Cel12B是极耐热胞外酶,氨基酸序列分析表明不含有纤维素结合结构域(CBD),对结晶纤维素无活性,但同样菌种来源的木聚糖酶XynA有催化结构域和纤维素结合结构城。 短句来源 更多
 not contain
 It is shown that let G is a connected,N 2-locally connected K 1,4 -restricted graph with δ≥6,which does not contain an induced subgraph H isomorphic to one of G 1,G 2 and G 3,then G is hamiltonian. 证明如下结论 :设G是连通、N2 -局部连通、δ≥ 6的K1 ,4 -受限图 ,如果G中不含有同构于G1 ,G2 或G3的导出子图H ,则G含哈密顿圈 . 短句来源 The culture of the experimental group contained bFGF, and the culture of the control group did not contain bFGF. 方法 应用新霉素破坏豚鼠离体椭圆囊毛细胞,实验组培养液含有bFGF,对照组培养液则不含有bFGF。 短句来源 Results V. cholera O139 contained the genomic sequences of CTX A2 B as well as O1 V. cholera , indicating that their homologous nucleotidies was 96.9%～98.7%, and other vibrios did not contain CTX. 结果　O13 9群霍乱弧菌和O1群含有相同的霍乱肠毒素 (CTX)基因 ,核苷酸序列同源性为 96 9%～ 98 7%。 其它致病弧菌不含有CTX基因。 短句来源 And bioinformatic analysis revealed that about 11% of the identified proteins were functionally unknown and did not contain any conserved domain associated with known activities. 生物信息学分析表明,在我们鉴定的蛋白质中有11%的蛋白质功能未知并且不含有任何已知的功能结构域。 短句来源 α-smooth muscle actin (SMA) and actin expressed. They reacted with monoclone antibody 3G5, but did not contain von Willebrand factor or keratin. 表达α-平滑肌肌动蛋白,肌动蛋白以及3G5阳性; 不含有von Willebrand因子和角蛋白; 短句来源 更多

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 contains no
 is an ideal of A, and A/Ia contains no non-zero P-ideal. In this paper, it is showed that xl(G)?3 for each plane graph of girth not less than 4 which contains no 6-, 7- and 9-cycles. The resulting product contains no less than 80% free amino acids and oligopeptides. Because the high-affinity Mn-binding site contains no histidine residue, this fact can be regarded as evidence that histidine is located at another (other than high-affinity) Fe(III) binding site. The CpG Island of Chicken α-Globin Genes Contains No Signals Sufficient for the Maintenance of Its Nonmethylated State in Transg 更多
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 Microsomal fraction of apoptotic MCF-7 does not contain any detectable DNases, but activates 40-50 kD nucleases when incubated with human placental chromatin. Data concerning new classes of extremophil nitrate reductases, whose active center does not contain molybdocofactor, are summarized. Probably, the resultant system does not contain SiO2 particles. We can assume that in general there is always a small region near the separation point in which separation is self-induced, and where the limiting solution of the Navier-Stokes equations does not contain "unattainable" singular points. It is shown that the latter alternative is preferable: when the supersonic part of the profile is determined by the "simple wave" method, the velocity at the wall increases monotonically and the flow does not contain shock waves. 更多
 did not contain
 DNA-macroarray genome scanning using individual genes was employed to set up our basic classification of isolates that did or did not contain pathogenicity islands. The root-associated bacterial complexes of both affected and healthy rose plants were dominated by the genera Arthrobacter, Rhodococcus, and Myxobacterium and did not contain phytopathogenic bacteria. The aseptically prepared homogenates of the surface-sterilized coralloid roots did not contain bacterial microsymbiont, indicating that in the root tissues the symbiosis is a two-component one (plant-cyanobacteria). The nucleolus did not contain subdomains corresponding to the fibrillar center and dense fibrillar component of "typical" nucleoli. Angioarchitectonics depended little on the cell population density in different zones of the rudiment; specifically, the cortical plate did not contain tangentially oriented vessels until week 12-13 of development. 更多
 not contain
 They do not contain the solutions of matrix equations or inequalities, but are parametrized by linearly contained parameters that take values in a domain defined by two frequency conditions. Microsomal fraction of apoptotic MCF-7 does not contain any detectable DNases, but activates 40-50 kD nucleases when incubated with human placental chromatin. DNA-macroarray genome scanning using individual genes was employed to set up our basic classification of isolates that did or did not contain pathogenicity islands. Data concerning new classes of extremophil nitrate reductases, whose active center does not contain molybdocofactor, are summarized. Probably, the resultant system does not contain SiO2 particles. 更多
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 ~~ 对于在均质承压含水层中,用鑽孔抽水试验计算岩层的渗透系数,巴布希金氏根据流线理论导出在均质承压无限厚含水层中带淹没式过滤器的不完整鑽孔抽水试验计算岩层渗透系数的公式,并用B.M.纳斯贝尔格氏的近似方法,即以距离原点为层厚m远的无限长度Nm的汇流(设其水流强度为Q/m,及N→∞),代替汇流的无穷反映体系,导出在均质承压有限厚含水层中带淹没式过滤器的不完整鑽孔抽水试验计算岩层渗透系数的公式。作者现用反映法将在均质承压有限厚含水层中的汇流变化为在均质承压无限扩展含水层中的汇流无穷反映体系情况,导出在均质承压有限厚含水层中带淹没式过滤器的不完整鑽孔抽水试验计算岩层渗透系数的公式。公式中不含有影响半径R,以免计算时假设其值。 ~~ (1)比較家蚕(华九-云瀚)和野蚕(萞麻蚕、柞蚕和樗蚕)之谷氨酰胺酶及天門冬酰胺酶之活力,发現在萞麻蚕絲腺体后部之細胞顆粒部分中,存在有活力甚強之天門冬酰胺酶。(2)自萞麻蚕絲腺体后部提取之天門冬酰胺酶制品中,不含有谷丙轉氨酶、谷天轉氨酶及谷氨酰胺酶。(3)L-天門冬酰胺之酶促水解作用在1小时过程中,活力和作用时間基本土表現直线关系。(4)萞麻蚕絲腺体后部之天門冬酰胺酶和哺乳类动物、植物及微生物之pH影响相同;在pH5以下不稳定,最适pH为8。(5)天門冬酰胺酶对热不稳定,先以不同温度和酶溶液作用10分钟,60℃时,活力丧失80%左右。(6)对氯汞苯甲酸(10~(-4)M)抑制天門冬酰胺酶20%,溴化乙酰胺(10~(-3)M)及DL-环絲氨酸(10~(-3)M)抑制15%。 Activities of protein disulfide reductase were first shown by Nickerson and Falcone in yeast and later on by Hatch and Turner in germinating seeds of peas. Similar enzyme activities have been observed in mammalian tissues in our preliminary studies.In the present paper some results on the partial purification and properties of protein disulfide reductase in regenerating rat liver are reported.The enzyme activity was determined by measuring the increased amount of protein-SH groups formed from a protein fraction... Activities of protein disulfide reductase were first shown by Nickerson and Falcone in yeast and later on by Hatch and Turner in germinating seeds of peas. Similar enzyme activities have been observed in mammalian tissues in our preliminary studies.In the present paper some results on the partial purification and properties of protein disulfide reductase in regenerating rat liver are reported.The enzyme activity was determined by measuring the increased amount of protein-SH groups formed from a protein fraction prepared from rat liver used as substrate.Protein-SH groups were estimated by a modified amperometric titration technique.By means of ammonium sulfate fractionation, followed by DEAE-cellulose adsorption and eluation, the enzyme was purified approximately 200 fold and separated completely from the activity of glutathione reductase. The enzyme preparation requires NADPH or NADH for its activity. The optimum pH is about 7.5. It is strongly inhibited by Zn~(++), Cu~(++), Hg~(++), iodoacetic acid and p-chloromercuribenzoate in a final concentration of 10~(-5)M. Reduced glutathione has no stimulatory effect on the enzyme activity. Besides oxidized glutathione, the purified enzyme preparation is also inactive towards some other disulfide compounds of low molecular weight such as lipoic acid and cystine. It is also inactive towards some crystalline proteins such as insulin, ribonuclease, bovin serum albumin and lysozyme. However, a low activity was noticed with bovin serum albumin as substrate when a boiled extract of the liver protein was added.Higher enzyme activities were found in some proliferating tissues such as regenerating liver, liver tumor and mouse embryo. 本文报告在大鼠组织中存在有促使肝蛋白—S—S—还原为蛋白—SH的酶活力,而以再生肝、肝癌、小鼠胚胎等组织的活力为高。利用硫酸铵分步沉淀及DEAE-纤维素吸附等法,可将再生肝中酶活力提纯约200倍,并可与谷胱甘肽还原酶活力完全分开。酶活力需要NADPH或NADH作为供氢体。最适pH为7.5。受Cu~(++)、Zn~(++)、Hg~(++)、对氯汞苯甲酸、一代碘乙酸等物质抑制。谷胱甘肽对酶活力无激活作用。提纯酶制剂不含有还原小分子—S—S—化合物的活力,对一些含—S—S—链的结晶蛋白质也无活力。 << 更多相关文摘
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