简介：他们对信息有着天生的敏感，问题只在于，如果我们不带他们去领略中国味儿的传统文化，那么，这一代的孩子就被淹没在世界大同的汪洋大海里。把课间操改成ParaPara舞不放3D动画而放水墨动画；不学街舞学舞狮……在全球化与传统之间，教育如何链接中国传统与全球化?

简介：<正>TheDalianInstituteofChemicalPhysicsofCAShasmadegreatstridesinselectiveoxidationstudiesafterhavingperformedsuccessfulcommercialtestingofthenovelcatalystforoxidationofparaxyleneinthe100kt/ascale.

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简介：AbstractPapillary thyroid carcinoma (PTC) has a high propensity for regional metastases, however, the impact of such metastases on the outcome of the patients is minimal. The central compartment of the neck is considered the first and the most common echelon of metastases from thyroid carcinoma. Physical examination along with ultrasonography are the gold standard pre-operative evaluation of patients with PTC. Ultrasonography is highly sensitive in evaluating lateral neck nodes, however, its value in evaluating the central compartment is limited, resulting in a relatively high rate of occult metastases in this compartment. The main potential complications of para-tracheal neck dissection (PTND) are recurrent laryngeal nerve paralysis and hypocalcemia and these may be higher in patients undergoing PTND compared to thyroidectomy alone. New histological data is available showing no evidence of lymph nodes in the central compartment above a level parallel to the inferior border of the cricoid cartilage. These findings support withholding dissection of the upper para-tracheal region routinely as a part of PTND in patients with well-differentiated thyroid cancer. By doing that, the complications may be lower and identical to thyroidectomy alone, thus may abolish arguments against more common use of elective PTND in patients with thyroid carcinoma.

简介：Theorientationalorderoftwoliquidcrystals,namely,6-［4-(4-nitrophenylazo)phenyloxy］hexyldiethanolamines(C6)and10-1-bromo［4-(nitrophenylazo)phenyloxy］alkane(B10)wasstudiedbymeansof2HNMRspectroscopywithhexamethylbenzene-d18astheprobemolecule.TheresultsshowthatthedirectorsinthesmecticAphaseofC6andthenematicphaseofB10couldbealigned,whichwasparalleltothemagneticfield.TheorientationalorderparameterofthesolutemoleculesinC6wasabout0.2,whileitisonly0.1inB10,whichisexpectedbecausethemoreorderedsmecticphasetendstoalignsolutemoleculestoahighlevel.ComparedtotheorientationalorderparameterofthesoluteintheSmCphaseof4［3,4,5-tris(4-dodecyloxybenzyloxy)-benzoyloxy］-4-(4′-dodecyloxybenzoyloxy)biphenyl(Ⅰ)(P2=0.14),itislargerinSmAphaseofC6.TherelativelyhigherorientationalorderparameterofthesoluteinC6isattributedtotheformationofintermolecularH-bondsintheSmAphaseofC6.

简介：ＥＸＰＲＥＳＳＩＯＮＯＦＥＢＶＬＡＴＥＮＴＭＥＭＢＲＡＮＥＰＲＯＴＥＩＮＩＮＥＳＯＰＨＡＧＥＡＬＣＡＲＣＩＮＯＭＡＡＮＤＰＡＲＡＣＡＮＣＥＲＯＵＳＭＵＣＯＳＡＷｕＭｉｎｇｙａｏ吴名耀ＬｉａｎｇＹｉｎｇｒｕｉ梁英锐ＷｕＸｉａｎｙｉｎｇ吴贤英Ｄｅｐａｒ...

简介：这研究被组织看作为一种强壮的抗氧化剂，维生素E是否能影响para-nonylphenol(p-NP)在它的发展期间引起的睾丸结构的畸形。在交配以后的32只女Wistar老鼠的一个总数被划分成四个组(n=8)：控制，维生素E(100mgkg-1每天)，p-NP(250mgkg-1每天)并且p-NP+维生素E。老鼠从怀孕的第七天被对待到第二十一天为止。在断奶以后，男小狗被划分成一样的组并且口头上地被对待90天。最后，正确睾丸用stereological方法被修理，处理，染色并且学习。当时，睾丸，生精的小管的体积和它的直径，地下室膜的厚度，幼芽的上皮的高度，类型A和Bspermatogonia的全部的数字，spermatocyte，spermatid和Sertoli房间的重量和体积显著地在p-NP组被减少与另外的组相比。在上述参数上补偿p-NP的不利效果的维生素E和p-NP的合作管理。另外，有仅仅维生素E的处理在直径，地下室膜厚度和幼芽的上皮的高度引起了重要增加，spermatogonia和spermatocytes的数字。有p-NP的维生素E的合作管理能在它的发展期间在睾丸结构上阻止p-NP的不利效果。

简介：Becauseofthezerodispersionwavelength(ZDWL)randomfluctuations,thegainandnoisefiguresdeteriorateinopticalparametricamplifiersbasedonhighlynonlinearfibers(HNLFs).ThedetrimentalroleofZDWLfluctuationsonthegainandnoiseperformanceindual-pumpfiberopticalparametricamplifiers(FOPAs)ispresented.Numericalinvestigationsofnoisefigure(NF)fordifferentfiberswithrandomfluctuationareanalyzed.Thenoisefiguresfordifferentfibersarevaryingeveniftherandomfluctuationissmall.ThroughchoosingHNLFswithlowZDWLfluctuationandlargenonlinearcoefficient,high-gainandlow-noiseperformancecanbeobtained.

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