摘要：阐述丝网印花的工艺过程,分析丝网印花的印花特点,并在此基础上举例说明丝网印花在针织T恤衫设计中的应用。结果表明,丝网印花能够使普通文化衫表现出直观的艺术性,反映着装者的精神面貌、品位、志趣和个性,灵活表达设计师的设计创意,深受消费者和设计师喜爱。

摘要：During advanced water detection using the transient electromagnetic method, the exploration effect for water-rich area is often poor due to the interference of bolts that are distributed in different positions in working face. Thus, the study on the interference characteristics of bolts in different states has important directive significance for improving the acquisition quality and data processing method in water detection. Based on the analysis of the distribution laws of magnetic field excited by small multi-turn coincident loop in full space of homogeneity, the test on the interference of bolts has been designed in the mine. Through drilling 18 holes around the overlapping coil in the working face, mass data are collected in order with the posi- tion change and the exposed bolt length. The results of comprehensive data analysis show that the transient electromagnetic field is strongly interfered as the distance between the bolt and the center of the coil is less than 3 m, and the interference varies greatly as the distance varies. On the other hand, the field induced by the bolts can be ignored as the distance exceeds 3 m. The findings can help to improve data acquisition and correction during advanced water detection when using the transient electromagnetic method.

摘要：To create a scaffold that is suitable for the construction of tissue-engineered skin, a novel asymmetric porous scaffold with different pore sizes on either side was prepared by combining a collagen-chitosan porous membrane with fibrin glue. Tissue-engineered skin was fabricated using this asymmetric scaffold, fibroblasts, and a human keratinocyte line (HaCaT). Epidermal cells could be seen growing easily and achieved confluence on the fibrin glue on the upper surface of the scaffold. Scanning electron microscopy showed typical shuttle-like fibroblasts adhering to the wall of the scaffold and fluorescence microscopy showed them growing in the dermal layer of the scaffold. The constructed composite skin substitute had a histological structure similar to that of normal skin tissue after three weeks of culture. The results of our study suggest that the asymmetric scaffold is a promising biologically functional material for skin tissue engineering, with prospects for clinical applications.

摘要：本文从四个层次对景观艺术设计进行思考,第一个层次从时空的概念看待景观,把景观视为视觉所触及的一切物体与空间的总和,它有自然景观及人为景观之分;第二个层次认为景观必须具有审美意义,把景观视为主体与客体之间存在的艺术,客体(景物)只有被主体(人)赋予了审美情感,它才能称其为景观艺术;第三个层次把“天人合一”的思想视为景观艺术设计的最佳观念,惟有自然与人和睦共处才能营造最佳的景观;第四个层次指出人既是景观的一分子,又是景观的设计者、使用者和监护者。

摘要：大气中CO_(2)浓度不断上升导致大量的环境问题,如冰川融化、温室效应、极端天气等,利用电化学方法将CO_(2)经还原反应(CO_(2)RR)转化为有价值的燃料或化学品是解决该问题的可行策略.由于CO_(2)具有稳定的化学键(C=O,806 kJ mol^(-1)),需设计具有优异活性和高选择性的催化剂.近年研究结果表明,过渡金属锚定在N掺杂碳载体上而制得的催化剂(M-N-C)具有较高的原子利用率、独特的活性金属中心电子结构以及存储量丰富,因而被认为是CO_(2)还原为CO的理想电催化剂.目前已经提出了多种方法来制备M-N-C催化剂,包括原子层沉积、基于金属-有机骨架的离子交换、基于载体修饰策略的吸附固化和受限热解.然而,这些方法存在制备过程繁琐或难以大规模生产的问题.同时,采用高温热解制备的M-N-C催化剂,金属活性位点易被其致密的结构包裹,难以完全暴露出来.但有效的活性位点对M-N-C的催化性能起着至关重要的作用,因此有必要研制一种简便、高效的方法来抑制金属原子聚集.超薄二维碳骨架已被证明可以缩短反应物的扩散路径并有利于暴露催化剂活性位点.本文将NiZn层状双金属氢氧化物(NiZn-LDHs)在多羟基化合物中进行剥离形成单层,同时通过控制单层NiZn-LDHs、多羟基化合物和三聚氰胺共同热解,宏量化制得Ni-N-C催化剂.X射线衍射(XRD)和透射电子显微镜(TEM)结果表明,在焙烧过程中,可通过改变单层NiZn-LDHs在多羟基化合物中的含量控制Ni-N-C材料中镍纳米颗粒的生成;焙烧过程中Zn挥发能使Ni-N-C材料形成更多中孔,增加碳骨架比表面积和孔径.中孔通道和碳基底超薄特性结合可以促进CO_(2)向内部活性位点扩散,增加反应物与活性位点的接触.XPS结果表明,Ni-N-C材料中Ni原子通过与N配位,锚定在超薄碳骨架上,且存在Niδ+中心(0<δ<2).X射线近边吸收和扩展X射线吸收精细结构分析表明,Ni-N-C-1中的Ni处于低价态(0<δ<2),这与XPS分析一致,且Ni为原子级分散;小波变换分析表明,Ni和N的配位数为3.9.利用H型电解池评估Ni-N-C材料电催化CO_(2)还原性能表明,Ni-N-C-1具有优异的CO_(2)还原活性,在-0.6至-1.0 V电位范围内,FE_(CO)都大于90%,且在-4.9 V时,FE_(CO)为95.2%,CO电流密度为24 mA cm^(-2);在-0.8 V电位,工作25 h后Ni-N-C-1的CO电流密度基本保持不变,说明Ni-N-C-1为稳定的CO_(2)RR催化剂.通过密度泛函理论计算研究了Ni-N-C材料电催化CO_(2)还原为CO的电化学演化历程,结果表明,该反应过程分四个步骤:CO_(2)吸附到单个Ni原子位点上;转移形成*COOH的质子/电子对;*COOH在释放H_(2)O的同时获得质子形成*CO;*CO从Ni位点解吸.相应步骤的吉布斯自由能分别为0.54,1.69,-0.99和-0.98 ***-N-C中Ni原子与配位N原子之间的强相互作用导致Ni原子的电子损失,Ni原子有0.85 e缺陷,周围的N原子有0.15 e堆积,这有利于CO_(2)的吸附.总之,本文采用单层NiZn-LDHs为金属源,开发了一种简便且可宏量化制备CO_(2)RR单原子催化剂的新方法.

摘要：目的研究系列化文创产品开发中多元化设计模式的应用。方法首先,从系列化文创产品设计的构成要素出发,搜集多类型文创产品样本,采用聚类分析法、分析比较法、归纳总结法、图谱分析法等方法对设计对象类型、文化元素提取角度、设计方法、产品类型、色彩方案等方向进行研究。在此基础上,形成多元化设计流程框架,构建系列化文化创意产品多元化设计模型。最后,通过赛珍珠文化案例验证文创产品多元化设计模式并进行设计实践。结论多元化设计模式能够在系列化文创产品开发中,充分发掘设计对象的文化特征、结构化设计流程、明晰设计步骤、提炼设计要素,从而达到管控整个设计活动,提升整体的产出效率的结果,以此激发文化市场的活力,满足当前市场巨大的消费缺口。

摘要：Due to the popularity of English, English language teaching has taken up an important position in China＇s education. Teachers of English may seldom consider the power behind this widely-used language during the teaching process. This article starts with revealing the power behind language so as to let teachers be aware of the hidden power behind English language and be conscious that English language is not neutral. At the same time, it reminds teachers of English to have a critical attitude on their teaching practice and help students to balance the study of Chinese and English.

摘要：水润滑轴承是单螺杆压缩机的热点技术,目前还不成熟。因气体力作用于星轮齿对星轮轴形成轴向气体力和弯矩,单螺杆压缩机的星轮轴承需承受轴向力和径向作用力。开展了水润滑单螺杆压缩机的星轮轴承受力的数值仿真模拟,得到不同轴承规格下星轮轴承接触面的接触应力大小。结果表明:轴承直径越大,接触面的最大接触应力和平均接触应力越小;轴承长度越长,接触面的平均接触应力越小,但最大接触应力先增大后减小。从水润滑液膜角度,轴承尺寸越大,变形和装配误差引起的轴承间隙变化将会增加,不利于轴承润滑水膜的形成。因此,在给定受力条件下,水润滑轴承的设计尺寸存在最佳值。

摘要：[目的]克隆小白杏(Prunus armeniaca)PaLOX基因全长并对其进行序列分析。[方法]根据已有的ESTs序列,设计3'和5'端RACE引物,利用RT-PCR和RACE技术克隆小白杏PaLOX基因c DNA全长。[结果]PaLOX c DNA全长序列为2 723 bp,含有一个1 002 bp的ORF开放阅读框,编码334个氨基酸,含有PLAT高度保守的特异结构域,预测蛋白质的相对分子质量为26.558 1 k Da,推测理化等电点为8.77,分子式为C1689H2635N459O490S13;该蛋白主要表现为亲水性,α-螺旋和延伸链则散布于整个蛋白质中,空间结构不稳定,无信号肽和跨膜结构,可能存在于线粒体中。进化分析表明,PaLOX氨基酸序列与梅、碧桃、苹果、梨、草莓等蔷薇科聚为一类,相似性依次为98%、99%、78%、77%、63%。[结论]获得了编码小白杏脂氧合酶的基因PaLOX全长序列,登录号为KM067451。

摘要：In the research, trees along 42 roads in Chongqing were explored and es- timated in terms of aesthetics, and aesthetic tendency and major influential factors of aesthetic value of street greenbelts in Chongqing arterial roads were estimated with phychophysical method to establish SBE model of arterial road greenbelts land- scape.