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Novel chitosan derivative with long alky groups as the hydrophobic moieties and carboxymethyl groups as the hydrophilic moieties was synthesized. The chemical structure of N-octyl-O, N-carboxymethyl chitosan was characterized via FTIR, 1H NMR and elemental analysis. The physical properties were analyzed with wide angle X-ray diffraction and differential scanning calorimetry.

以天然可生物降解的壳聚糖为原料，通过在壳聚糖6位羟基上引入羧甲基，在2位氨基上引入疏水烷基链，制得N-辛基－O，N-羧甲基壳聚糖两亲性衍生物，分别用FTIR、1H NMR和元素分析等技术对其结构进行表征，用广角X射线衍射和差示扫描量热法对具物理性质进行分析，并考察其在各种溶剂中的溶解性能及其对难溶性药物的增溶能力。

This study analyzed the current situation and figures out strategies to reinforce the college Dragon and Lion Dance :make culture into forerunner and give wide publicity about Dragon and Lion Dance culture in college;establish long-term development stratagem and management system; deeply dredge up advantage of the resource of college to enhance Dragon and Lion Dance of college ;strengthen the course and teaching reformation of college;go back to society and anabasis market to realize the continuance development model of produce-study-research .

针对目前我国高校龙狮运动的发展现状，本文提出并论证了今后我国高校龙狮运动的发展对策：以文化为先导，加大龙狮运动宣传力度；制定长远发展战略，建立健全管理体制；深入挖掘高校资源优势，做大做强龙狮项目；以课程改革为契机，加强高校龙狮运动课程与教学改革；加大高校龙狮运动师资培养力度；回归社会，进军市场，实现产学研一体化的可持续发展模式。

To restore the ability of chromium can be dissolved in sulfuric acid, hydrochloric acid and High-FE acid and release hydrogen, but also of pure chromium with aqua regia does not work, when there is the presence of halogen ions in the acid can not be long-term stability, high temperature with alkali, hydrogen sulfide, sulfur steam, phosphorus, ammonia, such as carbon monoxide and water vapor reaction of the corresponding compounds, in the high temperature reaction of silicon into the silicide also chromium, chromium alloys with many metals generate a wide range of industrial applications, such as chromium-manganese stainless steel is used extensively for chemical plants.

铬的还原能力强，能溶于硫酸、盐酸和高FE氯酸而放出氢气，但纯铬连王水也不起作用，当有卤素离子存在时，在酸中不能长期稳定，高温时能与强碱、硫化氢、硫蒸汽、磷、氨、一氧化碳和水蒸汽等反应生成对应的化合物，在高温下还能与硅反应成硅化铬，铬能与许多金属生成合金广泛在工业上应用，如铬锰不锈钢大量用于化工设备。

Univar and Dow Corning have been long-term colleagues in successfully selling and marketing a wide range of silicone-based specialties in the Benelux and all over the world.

Univar与道康宁公司，长久以来一直在成功地销售和营销的有机硅广泛的长期的同事为基础的专业和比荷卢经济联盟在世界各地。

In "Orrorin tugenensis Femoral Morphology and the Evolution of Hominin Bipedalism," the authors articulate that the analysis and morphological comparisons among femora from the fossils showed that O. tugenensis is distinct from those of modern humans and the great apes in having a long, anteroposteriorly narrow neck and wide proximal shaft.

在图根原人股骨形态与两足动物的进化问题上，作者确认：经分析与比较它们的股骨化石形态表明，图根原人与现代人和类人猿有明显的不同，它们的骨杆较长且细，近端骨干较为宽大。

Today, has covered the entire Pearl River Delta until radiation to Guangxi, Guizhou, Henan, Hebei, Chongqing, Jiangsu, Zhejiang and Fujian provinces and cities, the ultra-large-scale cargo throughput close harmony with our domestic and foreign plastic materials manufacturers, suppliers To the relationship between the formation of Japan-wook, Toray Japan, the United States GE, Bayer, Taiwan Chi Mei, Taiwan's chemical, petrochemical wide, LG Chemical and so on and we established a long-term, friendly and cooperative relations group.

如今客户已覆盖整个珠江三角洲及至辐射到广西、贵州、河南、河北、重庆、江苏、浙江、福建等省市，超大规模的货物吞吐量亲密融洽了我们跟国内外塑胶原料制造商、供应商之间的关系，日本旭化成、日本东丽、美国GE、德国拜耳、台湾奇美、台湾化学、广石化、LG化学等都与我们建立了长期，友好的合作伙关系。

And he made the cover all of gold, two and a half cubits long and a cubit and a half wide.

6用精金做施恩座，长二肘半，宽一肘半。

In especial he has been making a thorough study for physics of edge plasma, limiter and divertor plasma in tokamaks for long time, he has wide academic exchanges and collaboration with the scientists at home and abroad.

对托卡马克边界层等离子体物理、限制器和偏滤器物理有长期和深入的研究，国内外有广泛的学术交流和合作。

In the world wide, whistle as an art also has a very long history and has been mass-based, many whistle music schools and associations are established, too. Lots of works are very famous, such as the "Whistle and Dog","Goodbye, Friend!"

在国外，口哨同样具有悠久的历史和广泛的群众基础，口哨学校、口哨协会早已屡见不鲜，《口哨与小狗》、《啊，朋友再见！

We started with a powerful 12", long-excursion low frequency driver for abundant bass punch and accurate low midrange. Next we joined a high-resolution 1" HF driver for clarity and brilliance with a groundbreaking horn design, ensuring smooth frequency response and ultra-wide sound dispersion so you can move around the stage.

这款产品配有功率强大的 12 英寸长冲程低频驱动器，提供铿锵有力的低音和精准的中低频；高解析度 1 英寸高频驱动器和设计新颖的号筒，提供明亮通透的高音，确保平滑的频率响应和极大的声音扩散角度，使你能在舞台上自由跑动。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。