教学课程资源库 更多>>

关键词： DIY   圣诞树   圣诞节  

摘要： 虽然距离圣诞节还有足足一个月,但是圣诞节的气氛早已开始慢慢的酝酿了,圣诞节的元素也逐渐开始走进人们的眼球。今天为大家展示的是一个圣诞树,这不是一棵普通的圣诞树,这是一上百个啤酒罐堆积而成的圣诞树,而且属于环保、可DIY的行列中,如果喜欢可以回家自己打造一个哟!

关键词： 轻工业品   零售店铺   生产制造基地   供应链   国际贸易   玩具   产业链   圣诞节  

摘要： 没有玩具和礼品的圣诞节,那还是圣诞节吗?目前,一场供应链的危机正在席卷全球,令得美国、英国、法国等许多西方国家的家长们焦灼不安。由于担心无法采购到心仪的应节礼物,他们纷纷涌入各地商场及零售店铺抢购玩具,这比起往年足足提早了一个多月。而据相关分析,这一场供应链的危机或将持续到明年上半年,才会有所缓解。造成供应链危机的原因很多,新冠肺炎疫情是最大的催化剂。受疫情影响,全球轻工业品最主要的生产制造基地,除了中国内地之外,印度、越南、泰国、马来西亚等今年以来一直饱受困扰,常处于停工停产,或间歇性停工停产的状态,产能受到严重抑制。同样是受到疫情影响,国际贸易间最主要的运输方式——海运也阻梗不畅,具体表现为欧美英等多个重要港口货柜堆积如山,装卸及运输工人严重缺乏;货轮舱位紧张,货柜供不应求;海运费用快速攀升……

关键词： Hemophilia   Osteoporosis   Skeletal fragility   Thrombin   Coagulation   Clotting factor  

摘要： Osteopenia and osteoporosis have increasingly become a recognized morbidity in those persons with hemophilia (PwH) receiving inadequate prophylactic clotting factor replacement. Animal models can control or eliminate genetic and environmental factors and allow for invasive testing not clinically permissible. Here, we describe the skeletal phenotype of juvenile and adult male mice with a genetically engineered deficiency in coagulation factor IX (FIX KO). Although the somatic growth of FIX KO mice matched that of their wild-type (WT) littermates at 10 and 20 weeks of age, the FIX KO mice displayed reduced bone mineral density (BMD), reduced cortical and cancellous bone mass, and diminished whole bone fracture resistance. These findings coupled with parallel observations in a murine model of hemophilia A (FVIII deficiency) point to an effector downstream of the coagulation cascade that is necessary for normal skeletal development. Further study of potential mechanisms underlying the bone disease observed in rare clotting factor deficiency syndromes may lead to new diagnostic and therapeutic insights for metabolic bone diseases in general.

关键词： MG动画   广告创意   设计  

摘要： 在新时代的媒介背景下,MG(Motion Graphics)动画凭借简约概括的设计风格、较低的制作资本成为当今品牌广告设计、企业宣传、科学普及的重要手段,本文以MG动画的广告设计为研究对象,结合笔者自身制作的具体品牌广告案例,分析MG动画广告中的创新与应用.

关键词： 常绿小灌木   一品红   圣诞花   花卉   大戟科   开花期   多年生   圣诞节  

摘要： 一品红又名圣诞花,是大戟科多年生常绿小灌木花卉,自然开花期在12月下旬,在欧美是装点圣诞节的珍贵花卉,故得名"圣诞花"。一品红也是我国冬季装点庭院和布置客厅的一种很好的花卉,它的"花"十分鲜润艳丽,可为"元旦"节增添节日的喜庆气氛。

关键词： 五星上将   麦克阿瑟   军事才能   朝鲜战争   圣诞节   王者归来   道格拉斯   菲律宾  

摘要： 或许在1950年12月24日之前,没有人会质疑道格拉斯·麦克阿瑟的军事才能,毕竟这位美国军队中屈指可数的“五星上将”,虽然其曾在菲律宾的巴丹半岛“走过麦城”,却也终究在菜特湾以一场华丽的“王者归来”洗刷了所有耻辱。而在美国高调介入朝鲜战争之后,麦克阿瑟力排众议所发动的“仁川登陆战”,更几乎将其推上了美国军神的宝座。

关键词： 香港市民   旅顺口   投降书   驻港英军   九龙半岛   圣诞节   黑色  

摘要： 1941年圣诞节,香港总督杨慕琦与驻港英军司令莫德庇少将在九龙半岛酒店签署投降书,命令驻港英军向日军投降,这一天被香港市民称为“黑色圣诞节”。英军号称能坚守香港半年,日军预计需要20多天才能攻克香港。但是仅仅18天,这座有着“东方马奇诺防线”、“第二个旅顺口”之称的城市就失守了,其速度之快令人咋舌。

关键词： 平均等待时间   供应链   集装箱船   数据统计   中国和美国   港口   排队等候   圣诞节  

摘要： 目前美国已进入圣诞节前的购物季热潮,商品库存仍维持在低位,西海岸进口货量不断增加,集装箱供应链瓶颈持续加剧。根据Vessels Value的数据统计,9月下旬,中国和美国港口外排队等候的船舶达141艘。9月份洛杉矶港的集装箱船平均等待时间约为8.7天,比8月份增长了2.5天。

关键词： Extracellular polymeric substances   Microorganisms   Exopolysaccharides   Nod Factors   NoeL  

摘要： A growing body of evidence suggests that Nod Factors molecules are the critical structural components in nitrogen fixation. These molecules have been implicated in plant-microbe signaling. Many enzymes involved in Nod factors biosynthesis;however, the enzymes that decorate (modify) nod factor main structure play a vital role. Here, the computational analysis of GDP-mannose 4,6-dehydratase (NoeL) proteins with great impact in modification of nod factor structure in four genomes of agriculturally important rhizobia (Bradyrhizobium, Mesorhizobium, Rhizobium, Sinorhizobium) presented. The NoeL number of amino acids was in the range of 147 (M5AMF5) to 372 (A0A023XWX0, Q89TZ1). The molecular weights were around 41 KDa. The results showed that the strain-specific purification strategy should apply as the pI of the sequences varied significantly (in the range of 5.59 to 9.12). The enzyme sequences and eight 3-dimensional structures predicted with homology modeling and machine learning representing the phylogenetic tree revealed the stability of enzymes in different conditions (Instability and Aliphatic index);however, this stability is also strain-specific. Disulphide bonds were observed in some species;however, the pattern was not detected in all members of the same species. Alpha helix was the dominant secondary structure predicted in all cytoplasmic NoeL. All models were homo-tetramer with acceptable sequence identity, GMEAN and coverage (60, - 1.80, 88, respectively). Additionally, Ramachandran maps showed that more than 94% of residues are in favored regions. We also highlight several key characterizations of NoeL from four rhizobia genomes annotation. These findings provide novel insights into the complexity and diversity of NoeL enzymes among important rhizobia and suggest considering a broader framework of biofilm for future research.