循环

The main achievements could be summarized as follows.1. The basic stress-strain characteristics and related physical mechanisms for sands under cyclic rotation of principal stress axes were investigated based on three kinds of drained tests including fixed principal stress axes, cyclic rotation of principal stress axes with magnitudes of principal stresses kept constant, and cyclic changes of principal stresses in both their axes and magnitudes. The main deformation behavior of sands with inherent anisotropy under cyclic rotation of principal stress axes with magnitudes of principal stresses kept constant was obtained in the following.

本文从试验研究、规律分析、数学建模和工程应用四个方面，对应力主轴循环旋转条件下砂土的变形特性进行了较为深入的研究，取得了如下主要研究成果：(1)基于对饱和砂土进行的主轴固定单调剪切、纯应力主轴循环旋转以及主应力幅值与应力主轴耦合循环变化的三类完全排水试验成果，分析和揭示了应力主轴循环旋转条件下砂土的基本变形规律，并探讨了其受力变形的内在机理。

The study on the meaning, the importance, the realization way, as well as the practice of the mining circular economy in China has been carried out in this part. The new "3R" principle is put forward by analyzing the quiddity of "reduce" of mining circular economy.

对矿业循环经济的内涵，矿业领域发展循环经济的重要性，矿业循环经济的实现方式和我国矿业循环经济的实践进行了研究评述。

Coronary artery bypass graft, Off-pump coronary artery bypass or minimally invasive direct coronary artery bypass were utilized to correct the myocardial bridging and coronary artery aneurysm. Reimplantation of the anomalous orifice of coronary artery and Takauchi procedure were used to repair coronary artery anomalous origin from pulmonary artery.

其中冠状动脉起源于肺动脉手术采用冠脉开口移位于主动脉1例，Takauchi手术1例；冠状动脉瘘体外循环下修补6例、冠状动脉下瘘口切线缝扎1例，非体外循环下左前降支－肺动脉之间瘘管结扎1例；左前降支心肌桥行MIDCAB 4例，OPCAB 8例，体外循环下行心肌桥松解术2例；冠状动脉瘤采用体外循环下CABG术2例，OPCAB 8例，其中冠状动脉瘤成形术1例，冠状动脉瘤切除术1例。

The conventional economy was an one-way flowing economy of "resources-production-pollution", while the circular economy was an economy development model on the basis of recycling, circulate vicariousness and circulate flushing.

传统经济是由"资源－产品－污染排放"的物质单向流动的经济，循环经济则是建立在物质不断循环利用，循环替代，循环净化基础上的经济发展模式。

The results show that the sample is well dispersed particles with high purity and an average size of about 1 μm. Favorable substances of Ca2 and Sn appear during the cycling of zinc electrode containing CaSn6, Ca2 has continues to react with ZnO to produce calcium zincate, which can highly reduce the dissolvability of anode active materials and greatly improve the cycling performance of zinc electrode. The simulated Ni/Zn battery using CaSn6 and ZnO as the active material of zinc electrode has a high discharge plateau and an excellent cycling ability, and it can retain about 72.6% of initial discharge capacity after 50 charge-discharge cycles.

研究结果表明：通过共沉淀方法合成的CaSn6粒度分布均匀，平均粒径在1 μm左右，并且具有较高的纯度；添加CaSn6的锌负极在循环过程中游离出了Ca2和金属锡等有益物质，并进一步与ZnO反应生成锌酸钙，降低了锌负极活性物质在电解液中的溶解性，从而显著提高了锌电极的循环性能；以CaSn6与ZnO的混合物为负极活性物质的模拟锌镍电池具有较高的放电平台和优良的循环性能，经过50次循环后，电池放电容量保持为起始容量的72.6%。

This paper,based on the theory of circular economy,and the experiences of the development in overseas and Tianjin,brin...

本文运用循环经济理论，结合天津发展循环经济的模式以及国外发展循环经济的状况，提出发展循环经济的措施和建议，促进中国新型工业化的发展。

The formation of SEI is related to the structure and BET surface of the carbonous materials. This causes the main irreversible capacity of carbonous electrode at the first charge and discharge cycle. It will play an active ...

初始的充放电循环中在碳材料的表面会形成SEI膜，其形成与碳材料的结构和比表面积有关，并造成碳电极在首次充放电循环时的不可逆容量；稳定的SEI膜一旦形成，在随后的充放电循环中将对电极的循环稳定性产生积极作用。

Circulative function and construction of circulatory economy from economic field to the whole social system has proven that circulatory society is the only way to sustainable development.

循环经济从经济领域的循环运行到整个社会系统的循环型建设的实践过程证明：循环型社会才是可持续发展的必由之路。

Based on the present situation of the auto industry development in China, this paper analyses the ?resources and environmental problems in the booming auto industry with the circular economy theory. The paper holds that the development of Chinese auto industry should be under the direction of the circular economy theory and puts forward the circulative model of the auto industry and the sustainable development measures.?

根据我国汽车产业的发展现状、面临的资源和环境问题，本文运用循环经济理论对我国飞速发展的汽车产业中存在的资源与环境问题，进行了分析讨论，认为汽车产业经济的发展应以循环经济作为发展方向，并提出了以循环经济理论为指导的汽车产业的循环模式和可持续发展的应对措施。？

At last, By using the factorization properties of cyclotomic polynmials on finite fields and the construction characteristic of cyclic codes, we present the relation of the period distribution of cyclic codes and the period distribution of their dual codes, establish the explicit formula for the number of the codewords without inner-period of the cyclic codes and their dual codes, find the method for computing the dimension and the period distribution of narrow-sense primitive BCH codes,and study the inverse question of period distribution of cyclic codes.

最后，利用有限域上分圆多项式的分解特性和循环码的构造特点，揭示了循环码的周期分布与其对偶码周期分布之间的内在联系，确定了一般循环码及其对偶码内无内周期码字的精确计数公式，决定了狭义本原BCH码的维数与周期分布，讨论了循环码周期分布的反问题。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。