降低

In successional process of wetlands, bare land Suaeda salsa community, Tamarix chinensis community organic matter content decreased by 81.0%、67.4% and 59.5% separately compared to Imperata cylindrical community,total N decreased 61.1%,59.6%,41.2%,available N decreased 69.2%,60.1%、46.8%,available P decreased

在湿地演替过程中，光板地、翅碱蓬群落、柽柳群落有机质含量与白茅群落相比，降低了81.0%、67.4%、59.5%，全氮含量降低了61.1%，59.6%，41.2%。

Comparative studies of electroactive components and voltammetric behaviors different between the MCF-7 cell without estrogen and the MCF-7 cell with estrogen showed that the concentration of the guanine and xanthine bases in the cytoplasm decreased, which resulted in the decrease of secretion ability of the MCF-7 cell without estrogen decreased, and these result in the decreasing of the voltammetric response of the cells, impling that the cell vaibility decreases.

结果发现，去激素MCF-7细胞质中的黄嘌呤和鸟嘌呤浓度降低，使细胞分泌黄嘌呤和鸟嘌呤能力降低，导致细胞和细胞质的伏安信号减弱，说明去激素MCF-7细胞的活性下降；研究了标准雌激素雌二醇、环境雌激素壬基酚和双酚A对去激素培养的MCF-7细胞增殖的影响，发现其均存在剂量-效应关系和时间-效应关系，并且雌激素效应由大到小的顺序为：雌二醇＞壬基酚＞双酚A；同时使用3-(4，5-Dimethylthiazol-2-yl)-2，5-diphenyltetrazolium bromide法验证了电化学法评价雌激素效应的可靠性。

Results are as followed:1 Exposure of HELF cells to BP caused c-Jun activation,and increased the activity of MAPK,PI-3K,p53 and cyclin D1 pathway.2 BP-induced c-Jun activation was inhibited by dominant negative mutants of extracellular signal-regulated protein kinase or c-Jun NH_2-terminal kinase,but not by p38,impling that JNK and ERK pathways medicate c-Jun activation induced by BP.3 Overexpression of dominant-negative mutants PI-3K and Akt potently blocked phosphorylations of c-Jun and ERK,but not JNK in response to BP,suggesting that PI-3K/Akt pathway positively regulates BP-induced c-Jun activation through ERK.4 Inhibition of p53 by its chemical or molecular inhibitor markedly increased the phosphorylation levels of c-Jun,Akt and ERK upon BP stimulation,indicating that p53 negatively medicates BP-induced c-Jun activation through PI-3K/Akt/ERK pathway.5 The cell lines expressed TAM67 exhibits no significant affecting normal cell growth properties.6 TAM67 was able to significantly block G_1-S transition and subsequent cell proliferation,suggesting that c-Jun is essential for cell cycle alternations elicited by BP.7 Overexpression of TAM67 impaired BP-induced cyclin D1 activation,decreasing expression of E2F1 and pRb,indicating that c-Jun participates in the modulation of BP-induced activation of cyclin D1/pRb/E2F1 pathway.8 Stably expression of TAM67 led to the increases in the expression levels of p53 and p21,elevating phosphorylation level of p53,clearly indicating that c-Jun regulates p53/p21 pathway activation induced by BRCollectively,PI3K/Akt/ERK pathway mediated BP-induced c-Jun activation through p53-dependent mechanism.

结果显示：1BP刺激细胞可促进c-Jun活化，并伴随着MAPK、PI-3K、p53和cyclinD1通路各组成成分的活性增强。2利用MAPK通路的显性失活突变体分别阻断细胞外信号调节激酶和c-Jun氨基末端激酶活性，均可明显抑制BP诱导的c-Jun活化，但阻断p38活性对BP引起的c-Jun活化无明显影响，提示JNK和ERK通路参与调控BP诱导的c-Jun活化。3过表达PI-3K和Akt的显性失活突变体也可显著抑制BP诱导的c-Jun活化，并降低磷酸化ERK的表达水平，但对磷酸化JNK的表达水平无明显影响，说明PI-3K/Akt通路通过ERK正性调控了BP诱导的c-Jun活化。4p53的化学/分子抑制剂能使BP作用的细胞内c-Jun活性明显增加，并同时诱导Akt和ERK的磷酸化水平的升高，表明p53可通过PI-3K/Akt/ERK通路对BP诱导的c-Jun活化进行负性调控。5随后观察转染细胞的生长情况，发现TAM67对细胞正常生长和形态无明显影响。6稳定表达TAM67可有效抑制BP诱导的S期细胞数的增加，提示c-Jun在BP致细胞周期改变的过程中发挥了重要作用。7TAM67过表达能够抑制BP诱导的cyclin D1活化，降低磷酸化Rb以及E2F1蛋白表达水平，表明c-Jun参与调控BP诱导的cyclin D1/Rb/E2F1通路的活化。8过表达TAM67可使BP刺激的细胞中p53、p21总蛋白以及p53磷酸化的表达水平明显升高，可见c-Jun也参与调控BP诱导的p53/p21通路活化。

That result confirm that the activate spleen-energy method can reduce the concentration of CCK-8S to inhibit the inactivation of IA current to selectively suppress the whole excitability of VMH neurons by the CCK-8S acceptor. This process can suppress excitability of satiety center and promote ingestive behavior.

运脾复方可能是降低了CCK-8S的浓度，通过CCK-B受体的作用减少了CCK-8S对VMH神经元的IA电流的抑制作用，进而选择性地抑制了VMH神经元的整体兴奋性使饱中枢兴奋性降低，从而达到促进摄食的目的。

In the application of the OFDM system, combined with the adaptive modulation, adaptive coding and the receive diversity based on the accurate estimation of the characteristic of the subchannels, we can increase the spectrum usage, reduce the transmission power, the intercarrier interference and the peak-to-average power rate. So the system performance is optimized.

在OFDM系统的应用中，在对各子信道特性的准确快速估计的基础上，通过对各子载波进行自适应调制，自适应信道编码，以及和接收端的分集接收相结合，能够提高频谱利用率，降低发射功率，抑制子载波间干扰和降低功率峰均比，从而能够使系统的性能达到最优。

Due to the fact that the intercarrier spacing in OFDM is relatively small, OFDM transceivers are somewhat more sensitive to phase noise compared to single carrier transceivers. Thus this problem must be carefully considered in designing an OFDMbased system since an accurate prediction of the tolerable phase noise can allow designer to relax system specifications. According to spectrum theorem, two components of phase noise were analyzed: common phase error and intercarrier interference. On the basis of the analysis, the performance of OFDM was given for the case where phase noise has been added to the signal, and an optimal design criterion for OFDM parameters was proposed that allows to improve the phase noise error correcting capabilities in OFDM receiver.

由于采用子载波间相互正交的结构，OFDM系统对于由本地振荡器不稳定性所导致的相位噪声影响非常敏感，针对公共相位误差CPE和载波间干扰ICI两种影响表现形式不同的干扰项，从功率谱密度函数这一独特角度分析了相位噪声对OFDM系统性能的影响，提出了旨在提高接收机抵抗相位噪声能力的OFDM系统关键参数优化与设计准则，可在对所设计OFDM系统性能加以提高的同时，有效降低对接收机前端模拟振荡器件和相位噪声抑制单元的性能指标要求，从而降低接收机硬件实现成本。

Percentage of dressing, eviscerated carcass decreased significantly as dietaryω6/ω3 was reduced; percentage of abdominal fat, subcutaneous fat and intermuscular fat were higher in birds fed lower ratio diets. Drip loss in both breast and thigh muscle increased significantly in birds fedω6/ω3 ratio from 18 to 2.6. Except b* value in breast muscle decreased as birds fed dietary ratio from 5 to 2.6, the tendency for breast and thigh muscle were almost similar; a* values progressively increased as the diets contained increasingω3 content, changes in b* were also significant but the pattern was almost the reverse for changes in a*. Decreasing the dietaryω6/ω3 clearly increased the contents of ALA, EPA and DPA, but not for DHA.

结果表明：①饲喂10：1的日粮显著增加6周龄AA鸡的体重和日采食量；②随着日粮ω6/ω3比值的降低，屠宰率和净膛率显著下降；低ω6/ω3比值的日粮增加腹脂率、皮下脂肪和肌间脂肪；③日粮ω6/ω3比值从18下降到2.6时，胸、腿肌滴水损失显著下降；除日粮比值从5降到2.6时胸肌b*值下降外，胸、腿肌变化规律相似，a*值和b*值变化趋势相反：a*值下降，b*值上升；④日粮ω6/ω3的降低，ω3 PUFA中ALA、EPA和DPA显著增加；⑤肝脏中ALA含量低于胸肌，而其长链衍生物C20：3、EPA和DHA的含量则是肝脏中含量较高。

Ten rats in each group were randomly sacrificed 14 and 28 days after intratracheal instillation.

强的松组摘要：动物体重减轻80%（ P ＜0.01），肺胶原蛋白降低35.3%（ P ＜0.01），羟脯氨酸含量降低44.2%（ P ＜0.01）。

Ten rats in each group were randomly sacrificed 14 and 28 days after intratracheal instillation.

强的松组：动物体重减轻80%（ P ＜0.01），肺胶原蛋白降低35.3%（ P ＜0.01），羟脯氨酸含量降低44.2%（ P ＜0.01）。

Resu1ts:0ur exprimemts manifest NtaC can prominently regu1ate1 ipid metabo1 ism, improve condition of hemorrheo1ogy, maintain homosta-sis of TXfu/6--keto--PGF,. l resist oxidation, lower liver index, reducethickness and stage of atherosclerosis p1aque, and promote remembrancefunct ion.

结果：脑力康胶囊可显著地调节血脂、改善血液流变性、维持TXB2与6－keto－PGF10的平衡、抗氧化、降低主动脉脂质含量、降低肝脏系数、病理学观察可减轻动脉粥样硬化程度、减少斑块厚度，且有促智作用。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。