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The characteristics of non-azide compositions including high nitrogen compounds such as tetrazoles,guanidine,improved thermites,oxidants,binders and process assistants are discussed.Because of their advantages such as adjustable burning rate,nontoxicity and high gas yield,non-azide gas generant to replace azide gas generant will put into use widely.

对出现的四唑类、胍类、铝热剂类等非叠氮配方的高氮化合物燃料、氧化剂、黏合剂、工艺助剂等特点和发展做了总结和讨论,指出非叠氮高氮化合物有无毒、燃速范围宽、产气量大、燃温低等优点,正在取代叠氮配方燃气发生剂,得到广泛应用。

The rbcL gene sequences of six species representing five subfamilies of the Hamamelidaceae and the Platanaceae were determined and used in the phylogenetic analysis on the "lower" Hamamelidae sensu Endress (1989) and its allies newly suggested.

测定了悬铃木科和金缕梅科5个亚科的6个代表种的rbcL基因序列,对低等金缕梅类植物及新近提出的相关类群进行了分子系统发育分析,获得4个最简约树。简约树步长为893,其CI值和RI值分别为0.558和0.591。

The newly collected DNA sequence data were analyzed with data collected in the previous studies involving species representing all the above families but the African Myrothamnaceae to address the phylogenetic questions of the"lower"Hamamelidae and the core family Hamamelidaceae.

主要结论包括:传统低等金缕梅类是一个复系类群;金缕梅科也是一个复系类群;ITS序列分析支持将连香树科包含在金缕梅科内,但是,rbcL资料和matK资料不支持将连香树科包含在金缕梅科内。

Compared with original hypoplastic model, the revised hypoplasticmodel can reflect mechanics of sand in cycle loading. That includes accumulation ofdeformation and accumulation of pore water pressure and decrease of effective stress.

相比原亚塑性模型而言,改进的亚塑性模型能够反映循环荷载下砂土的力学特性,包括变形的累积效应,孔隙水压力的累积效应以及有效应力的降低等

Two main problems of the main road pedestrian environment have found out: first, the main pedestrian realm of the main roads is incontinuous, lack genius loci and low service level; second, the joint part of the main pedestrian realm, including crosswalks and bus stops, are unsafe and inconvenient.The main causes of those problems from macroscopic viewpoint are analyzed.

提出目前城市干道步行环境存在两大问题:一、以人行道空间为主的&城市干道两侧主体步行空间&,存在空间不连续、缺乏领域感、部分设施服务等级过低等问题;二、以人行横道、公交车站等为主的&进入主体步行空间的交接性步行设施&,存在缺乏安全性和方便性的问题。

Results MRI appearances of acoustic neuromas were:(1)The turmor's growth round the internal auditory canal,the Ⅶ,Ⅷ nerves affected side were thickened than that of opposite side.There was no marked demarcation between the main bodies of the tumors and the affected nerves.The connection between tumors and affected nerves could be showed at contrast enhanced imaging.(2)The tumors were of hypo or isohypo intensity on T1 weighted images and hyper or iso hyper intensity on T2 weighted images.(3)After Gd DTPA administration the tumors were homogeneously or inhomogeneously or circularly enhanced.(4)The margins of the tumors were smooth and well delineated.(5)The affected internal auditory canal usually became shorter in depth and larger in posterior anterior diameter.(6)MRI appearances of micro acoustic neuromas were that the affected Ⅶ,Ⅷ nerves were normal in size or nodularly thickened and the tumor reveaed nodular or point enhancement at contrast enhanced MRI.

结果 听神经瘤的MRI表现主要为:(1)肿瘤以内听道为中心生长,第Ⅶ、Ⅷ神经束较对侧增粗,与肿瘤主体多无明确分界,增强后可见两者相连,颇为特征;(2)肿瘤在T1加权图像上呈低信号、略低信号或低等混合信号,T2加权呈高信号或高等混合信号;(3)注射Gd DTPA后肿瘤呈均匀、不均匀或环状强化;(4)肿瘤边界清晰,边缘光整;(5)绝大多数肿瘤患侧内听道前后径扩大,深径缩短;(6)微小听神经瘤的MRI表现为第Ⅶ、Ⅷ神经束正常或局部结状增粗,造影后呈结节状或点状增强。

The application of immunosuppressive agent s in the treatment of nephrotic syndrome;2. Investigation and analysis of the use of immunosuppressive agent s of 247 renal transplantation patients;3. The article introduces a new immunosuppressive agent ,FTY720,which comes from Isaria sinclairii.

介绍了一种来源于冬虫夏草的新型免疫抑制剂 FTY720,该药具有免疫抑制效果显著,药理作用独特,与CsA和FK506有协同作用,毒副作用低等特点,显示了良好的临床应用前景。

Lower vascular plants coextensive with the family Lycopodiaceae; in some classifications includes the Selaginellaceae and Isoetaceae.

与石松科同延的低等脉管植物;在某些分类中,包含卷柏目和水韭目。

The lower detection limit was 0.0006 mg/L Conclusion: Compared with the conventional isonicotinic acid 3-methy-1-pheny 1-5-pyrazolone spectrophotometry method, the advantages of the method are auto-sampling, rapid analysis speed and lower reagent consumption, etc.

与传统异烟酸-吡唑啉酮分光光度法相比,该方法具有自动进样、分析速率快、试剂耗量低等优点,可应用于大批量常规地表水分析。

To obtain a better understanding of the microbiota inhabiting the intestinal tract of wood-feeding lower termites, the European subterranean termite, Reticulitermes santonensis (Isoptera: Rhinotermitidae), was used as a model system.

为了对木食性白蚁肠道共生微生物有一个全面的了解,以揭示白蚁肠道共生微生物在木质纤维素消化中的作用,本论文在国际上首次报道了应用分子克隆,DNA指纹分析,及荧光原位杂交等多种先进的分子生物学技术,以散白蚁Reticulitermes santonensis为模式系统研究低等木食性白蚁肠道内不同微生态环境中细菌的区系结构及多样化和主要细菌类群在该白蚁肠道的分布与定位等问题,并研究了与散白蚁Reticulitermes flavipes肠道共生鞭毛虫P.vertens相关的共生细菌的系统发育类型。

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This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。

There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.

双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。