Diversity of culturable endophytic fungi of common reed ( Phragmites australis) in coastal wetland

内生真菌在植物生长以及抵御环境胁迫过程中起着非常重要的生态作用.本研究从黄河三角洲滨海湿地1350个芦苇组织切片中分离得到318株内生真菌,通过对rDNA ITS的分型、测序及系统进化分析,研究了该地区芦苇植株根、茎、叶中可培养内生真菌的种类组成及在不同盐度、不同组织中的分布情况.根据序列相似性(以98%为阈值),共获得12个真菌分类操作单元(OTUs).在门级分类水平上,子囊菌门为绝对优势菌群,在各组织和站位中均有分布.芦苇根组织中分离得到的内生真菌OTU数相对较多,叶组织和茎组织中分离到的OTU数相同,且叶中的OTU在根中均存在.潮上区(低盐区)内生真菌OTU数最多,高潮区次之.根中可培养..

Research on Lingnan Banished Poets of Tang Dynasty

唐代谪岭诗人是唐代诗坛上一个特殊而引人注目的诗人群体，他们最大的共同点是因政治失意而被贬谪到岭南。他们身份既是贬官又是诗人，皆有诗篇传世。据统计，有唐一代被贬岭南的官员429人，其中属诗人身份的有91人，在岭南有诗作传世的有23人，诗篇合计近约264首。这为数不少的诗歌既是唐代贬谪文学的重要组成部分，也是唐代岭南文学与岭南文化的重要版块。本文主围绕这23位谪岭诗人及其创作进行考察和研究。 本文分为引言、正文、结语三个部分。引言部分简要介绍选题缘由、研究现状及意义，正文部分分为三章： 第一章主要从唐代岭南道的政治地域界定、谪岭诗人考订两个方面做简要考证和数据统计。 第二章主要论述谪岭诗人在...Lingnan Banished Poets are a peculiar and noticeable poets group in the circle of poets in Tang Dynasty. One thing the poets have in common is that they were banished to Lingnan, the South of Five Ridges, due to their thwarted political careers. They were officials in exile and poets as well, whose works have been handed down from the ancient times. According to a rough statistics, there were 429 ...学位：文学硕士院系专业：人文学院_中国古代文学学号：1022012115225

网络语料辅助翻译研究

翻译是传递信息的语言文化活动,丰富的网络资源为翻译提供了便利与服务。目前,网络辅助翻译已经成为翻译研究领域的一个新课题。文章主要阐述和分析网络对于翻译理论研究和翻译实践产生的影响,建议译者充分利用网络资源,以提高翻译的质量和效率。一、引

A Study on Subtitle Translation of Verbal Humor in The Big Bang Theory in light of Skopostheorie

近年来，美剧的研究逐渐增多。在中国，字幕翻译也已经成为一个新兴的行业。人们认识到，与配音的外国影片相比，有字幕的影片不仅能帮助观众克服语言上的障碍，而且有助于观众更好地了解异域文化。尤其是美剧中的言语幽默，能让人开怀大笑，给生活带来欢乐。毋庸置疑，美剧中言语幽默的翻译对幽默效果的实现至关重要。然而，随着越来越多的美剧涌入中国，美剧的字幕翻译质量很难得到保证。因此，本文通过美剧中的幽默言语来分析字幕翻译的策略并探讨幽默效果的实现。《生活大爆炸》是时下非常受欢迎的美剧，其独特的言语幽默特点适合字幕翻译研究。 目的论是功能翻译理论的核心理论。根据目的论的观点，字幕翻译既是重呼吁型文本，也是视听功能...Recent years have witnessed an increasing number of researches on American sitcom (situation comedy), and the subtitle translation has also been a new emerging industry in China. People realize that subtitled foreign videos, unlike dubbed ones, not only can help audiences overcome language barriers but also are conductive to acquiring a better knowledge of the culture and custom of other countries...学位：翻译硕士院系专业：外文学院英语语言文学系_翻译硕士学号：1202009115235

Effects of magnesium intake on expression of insulin receptor in type 2 diabetes rats

目的观察补镁对2型糖尿病大鼠胰岛素受体(InSulIn rECEPTOr,Ir)表达水平的影响。方法将高脂饲料喂养加链脲佐菌素注射方法诱发的2型糖尿病大鼠随机分为4个组,高、中、低剂量组在高脂饲料中分别加入氧化镁2000、1000、200Mg/kg(以镁离子计),糖尿病对照组只喂饲高脂饲料,正常对照组喂饲普通饲料。动物自由进食,连续4周,用葡萄糖氧化酶法测定空腹尾尖血的血糖含量,腹主动脉取血用放免法测定血清胰岛素含量,用免疫组化法测定胰腺和骨骼肌组织Ir表达水平。结果经IMAgE-PrO PluS图像分析,高剂量组的胰腺和骨骼肌组织中Ir表达水平分别为0.341±0.001和0.346±0.002,均较糖尿病对照组升高,而血糖水平则较糖尿病对照组降低,差异均有显著性意义(P<0.05)。结论镁补充可以提高2型糖尿病大鼠胰腺和骨骼肌组织中Ir的表达水平,降低空腹血糖水平。Objective To investigate the effects of magnesium intake on expression of insulin receptor in type 2 diabetes rats.Methods The models of type 2 diabetes rats were established by feeding with high-fat-diet and injecting streptozotocin(STZ).Rats were randomly assigned to four groups.The high-fat-diets were administrated magnesium at a dose of 2000(high magnesium group),1000(medium magnesium group)and200(low magnesium group).Model control group was only fed with high-fat-diet.Normal control group was fed with common diet.Rats ate freely for four weeks.Fasting blood glucose was detected by glucose oxidase method..Insulin was detected by radio-immunity method.The expression levels of IR of pancreas and skeletal muscle were detected by immunohistochemistry method.Results The immunohistochemistry pictures were analyzed by Image-Pro Plus.Compared with model control group,the expression levels of IR of pancreas and skeletal muscle were 0.341±0.001 and 0.346±0.002,increased and fasting blood glucose decreased significantly in high magnesium group(P<0.05).Conclusion Magnesium intake may increase the expression levels of IR of pancreas and skeletal muscle,and decrease fasting blood glucose in type 2 diabetes rats

The Influence of Magnesium Supplementation on Glucose and Lipid Metabolism of Rats with Type 2 Diabetes Mellitus

目的:研究镁补充对2型糖尿病大鼠糖脂代谢的影响。方法:将用高脂饮食联合链脲佐菌素(STz)方法诱发的2型糖尿病大鼠随机分为四个组,糖尿病对照组喂饲高脂饲料,高、中、低剂量组在高脂饲料中分别加入2000、1000、200 Mg/kg的镁(以镁离子计)。自由饮食喂养四周,处死动物。用放射免疫法测血清胰岛素(InS)水平、用葡萄糖氧化酶法测空腹血浆葡萄糖(fASTIng PlASMAgluCOSE,fPg),并计算胰岛素敏感指数(InSulIn SEnSITIVITy IndEX,ISI)。比色法检测糖化血红蛋白(glyCOSylATEd HEMOglObIn,HbA1C)。用全自动生化分析仪测高密度脂蛋白胆固醇(HIgH-dEnSITy lIPOPrOTEIn CHOlESTErOl,HdlC)、甘油三酯(TrIglyCErIdE,Tg)、总胆固醇(TOTAl CHOlESTErOl,TC)。结果:高剂量组的空腹血糖、空腹血清、糖化血红蛋白、甘油三酯、总胆固醇水平均较糖尿病对照组显著性降低(P<0.05),而高密度脂蛋白胆固醇、胰岛素敏感指数较糖尿病对照组显著性升高(P<0.05)。结论:镁补充可以提高2型糖尿病大鼠胰岛素敏感性,改善糖尿病大鼠的糖脂代谢情况。Objective: To investigate the effect of magnesium supplementation on glucose and lipid metabolism of rats with type 2 diabetes mellitus.Method: Rats with type 2 diabetes mellitus were induced with high fat diet and intraperitoneal injection with small dose of STZ,then they were divided into 4 groups randomly: high,medium,low magnesium supplementation groups and diabetes mellitus control group.Diabetes mellitus control group was feed with high-fat feed only.The dosage added in high-fat feed of the high,medium,low magnesium supplementation groups are 2000,1000,200 mg/kg(measured by Mg2+).All the rats ate and drunk freely.All rats were killed after four weeks.The serum insulin(Ins) level were tested with radiation immune method,fasting plasma glucose(FPG)were mea-sured with glucose oxidase method,and calculation the insulin sensitivity index(ISI).Glycosylated hemoglobin(HbA1c) was measured by chromatometry.High-density lipoprotein cholesterol(HDLC),triglyceride(TG),total cholesterol(TC) were measured by automatic biochemical analyzer.Results: FPG,Ins,TG,TC levels of high dose group was significantly lower compared with that in the diabetic control group(P<0.05),while HDLC,ISI increased significantly compared with that in the diabetic control group(P<0.05).Conclusion: Magnesium supplement can improve insulin sensitivity,improve glucose and lipid metabolism in type 2 diabetic rats

INFLUENCE of MAGNESIUM SUPPLEMENTATION ON INSULIN RESISTANCE AND THE INFINITY of RECEPTOR IN RATS WITH TYPE 2 DIABETES MELLITUS

目的观察镁补充对2型糖尿病大鼠胰岛素受体亲和力的影响。方法将用高脂饮食联合链脲佐菌素(STz)方法诱发的2型糖尿病大鼠随机分为4个组,糖尿病对照组喂饲高脂饲料,高、中、低剂量组在高脂饲料中分别加入2000、1000、200Mg/kg的镁(以镁离子计)。每周检测空腹血糖1次。自由饮食喂养4 W,处死动物。用放射性受体分析法测肝细胞胰岛素受体亲和力、放射免疫法测血清胰岛素(InS)水平、比色法检测糖化血红蛋白(HbA1C)和血浆丙二醛(MdA)、葡萄糖氧化酶法测空腹血浆葡萄糖(fPg),并计算胰岛素敏感指数(ISI)和抵抗指数(IrI)。结果高剂量组的高亲和力胰岛素受体结合常数(k1)为(4.76±0.08)x108l/MOl,低亲和力胰岛素受体结合常数(k2)与结合容量(r2)分别为(1.10±0.14)x106l/MOl,(8.49±0.43)x1013/Mg蛋白,均较糖尿病对照组显著性升高(P<0.05)。补镁第3 W开始高剂量组空腹血糖较糖尿病对照组显著性降低,高剂量组的胰岛素敏感指数较糖尿病对照组显著性升高,而胰岛素抵抗指数则显著性降低。结论镁补充可以提高2型糖尿病大鼠胰岛素受体亲和力,降低胰岛素抵抗。Objective To observe the influence of magnesium supplementation on the infinity of insulin receptor in rats with type 2 diabetes mellitus.Method The rats with type 2 diabetes mellitus were induced with high fat diet and intraperitoneal injection with small dose of STZ.They were randomly divided into 4 groups,i.e.high,medium,low magnesium(2000,1000,200 mg/kg Mg2+) supplementation groups and diabetes mellitus control group.FPG was measured weekly.All rats were killed after 4 w,and liver cells were tested with radiation receptor analysis of their combination constants and combined capacity.The serum insulin(Ins) level was determined with radioimmunoassay.FPG,glycosylated hemoglobin(HbA1c) and plasma malondialdehyde(MDA) were also measured,and insulin resistance index(IRI) and insulin sensitivity index(ISI) were calculated.Results: High affinity insulin receptor combination constant(K1),low affinity insulin receptor combination constant(K2) and combination capacity(R2) of high dosage group were(4.76±0.08)×108 L/ mol,(1.10±0.14)×106 L/ mol,(8.49±0.43)×1013 /mg protein respectively,significantly increased than those in diabetes mellitus control group(P<0.05).FPG was decreased since the 3th week during magnesium supplementation.The insulin sensitivity index(ISI) of high dosage group was significantly increased than that of model control group,but insulin resistance index(IRI) was decreased.Conclusion Magnesium supplementation could improve insulin receptor affinity and reduce insulin resistance in type 2 diabetic rats

A quantitative research based on CT three dimensional reconstruct of personalized hip prosthesis and porcine femoral canal fixed

目的基于CT三维重建个性化设计猪股骨髋关节假体与骨髓腔接触率的定量研究。方法选择猪股骨,拍摄实验前正侧位,双斜位片,再运用CT进行横断面扫描,获得CT数据后三维重建。基于CT三维重建数据,运用机器人磨削个性化假体,使其成为与髓腔完全匹配的定制假体。匹配后,拍摄实验后正侧位片,计算定制假体与髓腔接触的骨皮质或者骨松质的表面积以及接触率。结果通过计算,个性化假体近端表面与骨髓腔直接接触率为90.8%,与医疗机器人辅助扩髓组获得的假体表面与骨髓腔直接接触率相近,远较传统手工扩髓组获得的假体近端表面与骨髓腔直接接触率高。结论基于CT三维重建个性化股骨假体与猪股骨髓腔初始固定直接接触率为90.8%,可获得良好的接触率。Objective A quantitative research based on CT three dimensional reconstruct of personalized hip prosthesis and porcine femoral canal fixed.Methods Choose a pig femur and get photos of its lateral and double oblique positions before the experiment, then use CT scanning in cross-section.Reconstruct three-dimension on obtaining CT datas, grind personalized prosthesis by using robot and making it perfectly matched with femoral canal of customized prosthesis.Take photos of its lateral when personalized prosthesis matched with femoral canal of pig after the experiment.Then calculate the surface area and contact rate of the cancellous bone or cortical bone respectively where the personalized prosthesis contact with femoral canal.Results Through calculation, personalized prosthesis proximal surface directly contact with the bone marrow cavity at a rate of 90.8% which is close to the rate that prosthesis surface directly contact with the bone marrow cavity which acquired by the medical robot-assisted reaming group.And further the rate is higher than the rate obtained by the traditional manual expanding medullary group.Conclusion The direct contact rate based on CT three dimensional reconstruct of personalized femoral prosthesis and porcine femoral canal initial fixed is 90.8% making it possible to have a good fixed

Photochemical route for synthesizing atomically dispersed palladium catalysts

该工作由校内外多个课题组共同努力，历时三年多完成。我校郑南峰、傅钢等课题组紧密协作负责催化剂的合成、表征、催化测试及机理研究；中科院物理研究所谷林研究员主要负责催化剂的球差校正透射电子显微研究；加拿大达尔豪斯大学的张鹏课题组参与催化剂的同步辐射X-射线吸收谱研究。该研究工作的第一、二作者刘朋昕、赵云均为我校博士生。【Abstract】Atomically dispersed noble metal catalysts often exhibit high catalytic performances, but the metal loading density must be kept low (usually below 0.5%) to avoid the formation of metal nanoparticles through sintering. We report a photochemical strategy to fabricate a stable atomically dispersed palladium–titanium oxide catalyst (Pd 1 /TiO2 ) on ethylene glycolate (EG)–stabilized ultrathin TiO2 nanosheets containing Pd up to 1.5%.The Pd 1 /TiO2 catalyst exhibited high catalytic activity in hydrogenation of C=C bonds, exceeding that of surface Pd atoms on commercial Pd catalysts by a factor of 9.No decay in the activity was observed for 20 cycles. More important, the Pd 1 /TiO2 -EG system could activate H2 in a heterolytic pathway, leading to a catalytic enhancement in hydrogenation of aldehydes by a factor of more than 55.Supported by Ministry of Science and Technology of China grant 2015CB932303; National Natural Science Foundation of China grants 21420102001, 21131005, 21390390, 21133004, 21373167, 21573178, and 21333008; a NSERC CGS Alexander Graham Bell scholarship (D.M.C.); and a NSERC Discovery grant (P.Z.)