简介：

简介：

简介：

简介：在数学竞赛中往往碰到形如ab±(a+b)+1=(a±1)(b±1)的式子，我们若巧妙地应用它去解决问题，往往能收到事半功倍的效果，现结合例子说明常用技巧。

简介：

简介：

简介：AbstractStroke is a devastating disease that occurs when a blood vessel in the brain is either blocked or ruptured, consequently leading to deficits in neurological function. Stroke consistently ranked as one of the top causes of mortality, and with the mean age of incidence decreasing, there is renewed interest to seek novel therapeutic treatments. The Scavenger Receptor Class B type 1 (SR-B1) is a multifunctional protein found on the surface of a variety of cells. Research has found that that SR-B1 primarily functions in an anti-inflammatory and antiatherosclerotic capacity. In this review, we discuss the characteristics of SR-B1 and focus on its potential correlation with the modifiable risk factors of stroke. SR-B1 likely has an impact on stroke through its interaction with smoking, diabetes mellitus, diet, physical inactivity, obesity, hypercholesterolemia, atherosclerosis, coronary heart disease, hypertension, and sickle cell disease, all of which are critical risk factors in the pathogenesis of stroke.

简介：

简介：公司在决定是否配置Weblog时更多的是取决于策略,而不是与软件配置相关的技木问题。许多保守的公司都认为Weblog太不正式,并且太不易控制,不能排除一些安全隐患。Weblog,也即Blog的简称,也就是允许多个用户将文本轻易地粘贴到Web网站上的一种技术,并且让最新贴的贴子在最上面,Weblog已经出现了好些年,但只是最近才受到广泛关注,并且它正在向企业界进军。一些公司已经在内部网或外部网的交流上配置了blog。尽管到目前为

简介：

简介：WeinvestigateindetailtheeffectsofR-parityleptonnumberviolationonthedecay~↑b1→b~↑x1^0intheR-parityviolatingminimalsupersymmetricstandardmodel(Rp-MSSM)underthepresentexperimentalconstraintsonRpparameters.Inournumericalcalculationsweconsidertwocasesofinputparametersofthesquarkandsleptonsectors,MsquarkMslepton,forcomparison.TheresultsshowthattherelativeR-parityviolatingcorrectionisnotverysensitivetothemassofthelightestneutralino-0↑x1andthedegenerateR-parityviolatingcouplingparameterλ2′,butstronglydependsonMsquark,Mslepton,tanβandthedegenerateR-parityviolatingcouplingparameterλ1′.Therelativecorrectionisabout-4～3%andcanexceed-6%insomeregionofparameterspace.Therefore,preciseexperimentanalysesonthedecay~↑b1→b~↑x1^0mayprovideaprobeoftheR-parityviolation.

简介：

简介：

简介：在解决一元二次方程的变化率问题,我们常用这样一个公式来解答：a（1±x）^n=b,其中a为原始量,b变化后的量,x表示变化率（包括增长率和降低率）,n表示变化的次数.若是增长率问题,可将数据直接代入公式a（1＋x）^n=b中求解.若是降低率问题,

简介：

简介：了解维生素B1：和其他所有复合维生素B族一样，硫胺素也是水溶性的，不会存储在孩子的身体里，必须每日进行补充。精神压力大时身体对它的需求量会增加。

简介：在历届全国各地的初中数学竞赛试题中，经常遇到有关化简形如(或可化为)式子√(a+√b)±√(a-√b)的问题．这类问题通常有下面三种化简方法，举例说明．

简介：

简介：

简介：