一级

In order to investigate the effect of temperature on the vitamin C in jujube juice and decrease the loss of vitamin C in the processing of jujube juice, the thermal degradation kinetics of Ascorbic Acid at 303, 313, 323, 333 and 343 K in the clarified jujube juice were investigated, and a mathematical model to predict Dehydroascorbic Acid concentration was also established.

为了了解加热温度对红枣汁中维生素C含量变化的影响，降低红枣汁在加工过程中维生素C的损失，该文以红枣澄清汁为材料，采用可逆的一级反应模型研究了不同加热温度下还原型维生素C的降解规律并推导出氧化型维生素C含量变化的数学模型。

Results show that ascorbic acid and dehydroascorbic acid of cloudy strawberry juice in the storage process are unstable to the heat treatment; the degradation of ascorbic acid and dehydroascorbic acid accords with first-order dynamic, which indicates that this degeneration dynamic model is logical and effective, and can be used in selection of storing temperature and prediction of storage period at different temperatures.

结果表明：草莓浑浊汁在贮藏过程中还原型维生素C和氧化型维生素C对热不稳定，还原型维生素C和氧化型维生素C降解符合一级反应动力学。经过验证表明该降解动力学模型有效，可用于草莓浑浊汁贮藏温度的选择和预测不同温度下的贮藏期。

Long-term modulation of spine density, but not number of primary dendrites, by BDNF was gated by cAMP.

研究表明，BDNF 对突触后树突棘密度的长时程作用也受cAMP 的门控调节，但是BDNF 对神经元一级树突数目的调节并不受cAMP 的调控。

However, none of the 3 athletes had any other phenotypic features of HCM on further noninvasive testing and none had first-degree relatives with features of HCM. One of the 3 athletes agreed to detrain for 12 weeks, which showed resolution of electrocardiography and echocardiographic changes confirming physiologic left ventricular hypertrophy.

然而这3例非侵入检查未发现其他HCM表型特征，且他们无一级亲属有HCM特征。3例中有1例同意脱离锻炼12周，其心电图和超声心动图变化消失，证实左室肥厚为生理性改变。

The photocatalytic degradation of dichloroacetic acid and trichloroacetic acid solution with titanium dioxide(TiO_2) thin films is investigated in the paper.

用常压化学气相沉积法镀TiO2薄膜，以紫外灯为光源，对二氯乙酸和三氯乙酸溶液进行光催化降解，并证实了此过程符合一级反应动力学方程。

This is not surprising, given the closer proximity of Pengyang to the Asian inland dust sources; The average content of calcium carbonateis of Pengyang section is not only higher than that of central loess plateau, but also higher the west of Chinese Loess Plateau, which reflected Pengyang loess had been deposited by near Liupanshan\'s substances that contained more calcium carbonateis; The content of diffluent element of 10m depth in the section increased fast, which indicated that the modern eluviation and the leaching depth of loess may be stronger than our guess; The soil growth index can reflect the intensity of soil forming and the climatic changes; The "abrupt chang" of glacial and interglacial period was caused by strong soil-forming processes that enlarged the discrepancy of granularity between loess and paleosol. However, the magnetic susceptibility nearly cannot reflect the existence of S_8 and the magnetic susceptibility of S_7 is highest in the whole section, which is inconsistent with other studies that S_5 has the highest magnetic susceptibility.Thin-section examination shows that the micro-texture of the soil layers is divided into both cementing texture in S_7, S_5 and S_1, and granular texture in all others.

与其它剖面相比，彭阳剖面粒度总体上要比东部的洛川、西安，甚至西部的兰州、新疆东湾要粗；CaCO_3平均含量不仅高于黄土高原中部，也高于高原西部，反映出本剖面富含碳酸盐的六盘山近源沉积起到了很重要的作用；易溶元素含量在剖面10m处快速升高，淀积特征明显，反映出黄土受现代淋溶成土作用影响较大，黄土直立、疏松、多孔特性和高温与多雨组合的气候特点，使得元素淋溶、淀积的强度和深度超出了传统的认识和判断；烧失量与其它指标相比，不仅能区分冰期、间冰期；而且能够区分出次一级的冰阶、间冰阶，有较高的分辨率；土壤发育指数、红度能够反映土壤强度差异，是反映气候波动的较好指标；然而，磁化率不能反映古土壤S_8的存在，且S_7的磁化率在全剖面中最高，这与大多剖面S_5磁化率最高的特点不一致。4。

A new form of energy dissipater named suspended grid plunge pool is posed through the hydraulic model experiment of diversion tunnel in Jilintai first-or.

悬栅消力池是在新疆喀什河吉林台一级水电站引水隧洞水力学模型试验中提出的一种新型消能工型式。

Compared with model experiment data of the Jilintai hydropower station, a two-dimensional numerical model is developed to simulate the flow filed in energy dissipater in non-pressure tunnel by using the volume of flow method and RNG k-εtwo equations turbulent model.

本文结合喀什河吉林台一级水电站引水深孔无压隧洞洞内消能工进行的水工及水力学模型试验，对无压隧洞洞内消能工进行了全面深入的研究。

A new form of energy dissipater named suspended grid plunge pool is posed through the hydraulic model experiment of diversion tunnel in Jilintai first-order hydropower station,which is located on the bank of Kashi River, Xinjiang.

悬栅消力池是在新疆喀什河吉林台一级水电站引水隧洞水力学模型试验中提出的一种新型的消能工型式。

A new form of energy dissipater named suspended grid plunge pool is posed through the hydraulic model experiment of diversion tunnel in Jilintai first-order hydropower station, which is located on the bank of Kashi river, Xinjiang.

悬栅消力池是在新疆喀什河吉林台一级水电站引水隧洞水力学模型试验中提出的一种新型消能工型式。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。