降等

It was found that the thermodynamically unfavourable isomerization of quadracyclane to norbornadiene could be accomplished in the presence of toluene or durene as a co-sensitizer.

首次发现在甲苯、杜苯等芳烃共敏化下，可以使原来不能进行的、热力学不利的四环烷→降冰片二烯异构化得以进行，并根据CIDNP结果提出这是由于生成了敏化剂/底物/芳烃三元基激络合物使反应的势能面改变造成的并促进单线态的系间窜跃。

The water content of the water content of the paper, directly influenced the business card printing and membership card to make the quality of the water content, right now, paper strength that is slowing down, the role of the epigene, the paper fiber will be pulled out, so that the plastic deformation increases brand drying rate affected; if the moisture content is too small, the paper will be issued with a crisp, easily damaged, generate static electricity.

纸张的含火量纸张的含火量的多多，间接感化着制卡和会员卡制息品的质量，含火量功多，纸张的不弱量会降矮，在边辛的功用下，纸张纤维会被不推出，使不不弹性变形加不弱，使痕迹的潮湿速量施到感化；如含火量功多，纸张会不收不韧，便当变不败毁坏，爆发静电等。

Objective To study the effects of hericium erinaceus polysacchrideson the cellular and humoral immune function in mice.

多糖类具有多种显著的生物活性和药理作用，如降血糖〔1〕，增加NK细胞活性〔2〕、抗衰老〔3〕等作用。

In the past several decades, great achievements have been made by the marine foraminiferal boron isotope researches on the following aspects: analytical techniques, offsets between laboratories, isotopic fractionation factor, long-term changes in seawater boron isotopic compositions and vital effects.

最近，海洋浮游有孔虫硼同位素的研究在实验分析技术、实验室偏差、同位素分馏系数、海水硼同位素长期变化以及各种次要因素等方面都取得了长足的进步，尤其是全蒸发负热电离质谱法的建立使硼同位素分析的样品需求量降到纳克级以下。

Methods:The origin,course,branches and distribution of the descending genicular artery and morphology and blood supply of great adductor muscle tendon were observed on 40 sides adult lower limbs perfused with red latax.

在40侧经动脉灌注红色乳胶成人尸体下肢标本上，对膝降动脉的起始、走行、分支和分布，以及大收肌腱的形态、血供等解剖观察。

According to Hofmann[2] et al., this approach preserves the vascularity of the patella by sparing the intramuscular articular branch of the descending genicular artery and preserves the quadriceps tendon, providing more stability to the patellofemoral joint in total knee arthroplasty.

Hofmann等人认为此法不但保留了膝降动脉的肌内关节支从而保存了髌骨的血运，而且保存了股四头肌腱从而使全膝关节置换术中髌股关节获得了更大的稳定性。

The results showed that at the beginning stage of being attacked by Chinesis white pine beetle and their symbiotic blue-stain fungus, PAL, PPO, SOD activities and MDA content significantly increased in the phloem of P. armandi, and decreased with the increase of the number of D. armandi and the attacking on the xylem and phloem of P. armandi from blue-stain fungus, then reached the minimum level in withering stage of P. armandi. But the contents of nutrition materials in the phloem, such as water, protein, glucide, fat, amylum and so on, declined with the infestation of D. armandi and symbiotic fungus. In summary, the resistance of physiology and biochemistry in the phloem of P.

结果表明，在华山松大小蠹和共生蓝变真菌危害初期，华山松韧皮部内的苯丙氨酸解氨酶、多酚氧化酶、超氧化物歧化酶活性均显著提高，丙二醛含量明显增加；但随着华山松大小蠹种群数量的增加和蓝变真菌对华山松韧皮部和木质部组织危害的加剧，韧皮部组织内的PAL、PPO和SOD活性逐渐降低，在枯立木阶段降至最低；与此同时，华山松韧皮部内的水分及蛋白质、糖类、粗脂肪、淀粉等营养物质含量，则随华山松大小蠹和共生蓝变真菌危害的加剧而不断减少。

Gymnemic Acid, which is extracted from the Gymnema Sylvestre ,is a natural and multi-functional composition.

森林匙羹藤酸(GymnemicAcid ，GA)是一种从森林匙羹藤中提取的多功能天然功效成分，它除了具有独特的甜味抑制功能，还可用于减肥、降血糖等方面，是一种很有前景的功能性基料。

We use this technology to measure some rock and oil sample taken from Liaohe or Tarim basin. We identified many series of biomarker with dividing-era significance. These series are C26 steranes, C30 methylsteranes; and methly hopanoid alkanes, hexacyclic hopanoid alkanes, which two series were measured first by our laboratory in China.

本论文建立地球化学样品GOMS／MS分析方法；并对辽河盆地和塔里木盆地岩石及原油样品进行GC／MS／MS分析，鉴定出多个系列具有划时代意义的生标组分，这些组分是用GC／MS技术无法检测的极微量的生标组分：C26降胆甾烷系列、C30甲基甾烷系列等：还有高碳数甲基藿烷系列和六环藿烷系列见图1，图2，在国内被我们实验室首次检出。

The huari board, felt and pipe products made of this material have been used in heat preservation, thermal insulation and sound absorption in construction, chemical industry, electronic industry, electric power, metallurgy, energy industry and transportation, presenting very good result.

用该材料制成的板、毡、管已大量用于建筑、化工、电子、电力、冶金、能源、交通等领域的保温隔热、吸声降噪，效果十分显著。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失