Study on Planning of Library Data Center Virtualization Network

针对厦门大学图书馆虚拟数据中心的网络设计问题,对底层虚拟网络进行分析和调优,提出数据隔离、链路冗余、带宽共用的虚拟网络设计原则,以期实现一个兼顾性能和可靠性的虚拟化数据中心网络设计方案。This paper targets on the network design problems in virtual data center of Xiamen University Library,including analysis and tuning of virtualized infrastructural network.It proposes the design principles of data segregation,links redundancy,and bandwidth sharing in order to implement a virtualized data center network with balance between performance and reliability

Treatment and reuse of beer wastewater using the system of phytosysthetic bacteria and spirulina maxima

应用PSb将啤酒废水中的有机质降解处理为无机质，用甲壳质絮凝沉降除去PSb后加入螺旋藻进行培养.小型动态模拟实验结果表明PSb和螺旋藻不仅能高效地净化啤酒废水，对COd和nH＋4n的去除率达100%，而且能回收数量可观（781Mg（干重）/（l·d）），营养价值高（蛋白质含量为493g/100g（干重））的螺旋藻，还研究了PH、溶解氧、光照、光合细菌密度等因子对PSb去除废水有机质的影响.A study on the install of phytosysthetic bacteria (PSB) and Spirulina maxima (SM) for beer wastewater treatment and reuse was carried out.The beer wastewater was treated with PSB to decompose organic matter.Chitin was then added for PSB precipitating.Finally,SM was added to remove organic matter and reuse nitrogen and phosphorus.The effects of pH,DO,illumination,the density of PSB and SM etc.on the removal of COD by PSB and on the growth of SM were discussed.The results of a dynamic model experiment showed that the system of PSB SM not only have a high removal efficiency for COD and NH + 4 N (100%),but can also yield a large amount of SM (78.1mg (dry weight)/(L·d)) and protein in SM (49.3mg/100g (dry weight))

氧化石墨烯/碱式硫酸铝掺杂聚醚砜/聚酰胺复合纳滤膜的制备及其性能

先由氧化石墨烯（GO）、硫酸铝和尿素通过水热法制得氧化石墨烯/碱式硫酸铝（GO-BAS）复合物,继与哌嗪（PIP）溶液共混作为水相;均苯三甲酰氯（TMC）溶于正己烷作为有机相;采用界面聚合法使两相单体在聚醚砜（PES）基膜表面形成聚酰胺（PA）功能层,制得氧化石墨烯/碱式硫酸铝复合物掺杂的聚醚砜/聚酰胺（PES-PA-GO-BAS）复合纳滤平板膜,并在较低的工作压力（0.3 MPa）下对其进行性能研究。其对无机盐溶液的截留率依次为:Na——2SO4（91.08%）>MgSO4（83.42%）>MgCl——2（68.97%）>NaCl（17.62%）;纯水通量可达24.19 L·m-2·h-1,较之聚酰胺纳滤膜提高了近60%,且具备良好的稳定性和耐碱性

Layer-by-layer self-assembly preparation and performance of GO-ceramics composite nanofiltration membrane

氧化石墨烯(GO)的片层边缘含有COOH等含氧官能团,因而带负电荷,可以在带正电荷多孔基体上通过层层自组装实现快速沉积。以由3-氨丙基三乙氧基硅; 烷(APTES)修饰的多孔氧化铝管式陶瓷膜为基膜,令GO和聚乙烯亚胺(PEI)以溶液形态在其表面交替沉积实现自组装,继以环氧氯丙烷(ECH)交联; 之,制备新型氧化石墨烯-陶瓷复合纳滤膜。最佳制备工艺是,PEI浓度5 g·L~(-1)、pH=9,NaCl浓度0.3; mol·L~(-1),GO浓度0.6 mg·ml~(-1)、pH=4.5,层数2层,ECH用量6.25 ml·L~(-1),50℃条件下处理70; min。层数为1~4层的自组装膜在0.6 MPa操作压力下对2; g·L~(-1)的MgCl_2的截留率分别为90.16%、93.71%、97.54%、92.93%,其中1层自组装膜的渗透通量为21.92; L·m~(-2)·h~(-1)。氧化石墨烯-陶瓷复合纳滤膜对4种无机盐的截留率大小为MgCl_2>MgSO_4>NaCl>Na_2SO_4,符合; 典型正电荷纳滤膜的特征。Graphene oxide (GO) can be quickly deposited on a positively charged; porous matrix via a layer-by-layer self-assembly strategy because GO; nanosheets contain rich negatively charged, oxygen-containing function; groups, such as COOH. In this paper, the GO-ceramics composite; nanofiltration membrane was prepared via layer-by-layer deposition of GO; solution and eolyethyleneimine (PEI) solution alternately, and then; cross-linked by epoxy chloropropane (ECH) on; 3-aminopropyltriethoxysilane-modified porous Al_2O_3 supports. The; optimum preparation conditions were: PEI 5g·L~(-1), pH=9; NaCl 0.3; mol·L~(-1); GO 0.6 mg·L~(-1), pH=4.5; ECH 6.25 ml·L~(-1) and heat; treatment 50℃/70 min. Under the conditions of 0.6 MPa, when the; self-assembly layer number increased from 1 to 4, the rejection to 2; g·L~(-1) MgCl_2 were 90.16%, 93.71%, 97.54%, and 92.93% respectively,and; the flux of self-assembled monolayer membrane was 21.92 L·m~(-2)·h~(-1).; The rejection orders of inorganic salts of GO-ceramics composite; nanofiltration membrane were as follows: MgCl_2>MgSO_4>NaCl>Na_2SO_4,; therefore they showed the typical positively charged nanofiltration; membrane characteristics

Treatment and Reuse of the Wastewater of Bean Products with the Phytosynthetic Bacteria and Spirulina maxima

应用光合细菌将黄泔水中的有机物降解转化为无机氮磷后养殖螺旋藻.结果表明，在实验条件下光合细菌对黄泔水COdCr的去除率可达70%，处理后的黄泔水用甲壳质絮凝澄清后加入螺旋藻并曝气进行培养，藻生长周期为22d、生长速率为20~30Mg/l·d.藻体蛋白质含量平均为52.6g/100g（干重），游离氨基酸平均含量为2.41g/100g（干重）A try on the treatment and reuse of the waste water of bean products with the phytosynthetic bacteria(PSB) and S.maxima(SM)was introduced.First the waste water of bean products was treated with PSB to decompositing organic matter,and then chitin was added for precipitating PSB,the last SM was added into the treated waste water for removing organic matter further and reusing nitrogen and phosphorous.The results of an dynamic modled experiment showed that PSB have a high removal efficiency for COD(70%) on the waste water of bean products,and SM cultured in the treated waste waster grow well,the rate of growing is 2030mg dryweight/(Ld),and the content of protein and free amino acid in SM are 52.6g/100g dryweight and 2.41g/100g dryweight respectively

Application of Fluorescent Probe Technique in Study of Polymer Self-Assembly

采用自组装技术制备新型功能性材料已成为聚合物材料的一个热门研究领域。大部分两亲性聚合物,如嵌段聚合物、接枝聚合物、星型聚合物、树枝状聚合物和部分无规聚合物及聚电解质,在特定条件下可发生自组装。在聚合物自组装的研究中,荧光技术已经得到了广泛的应用,尤其是荧光探针技术。根据荧光探针分子荧光光谱特征峰荧光波长、强度、偏振以及寿命等参数的变化,可以简便而又准确地研究聚合物的临界胶束浓度、温度和PH敏感性、结构与自组装形态的关系、微环境变化等信息。本文综述了荧光探针技术在两亲性聚合物自组装行为研究中的应用,重点介绍了荧光探针技术研究聚合物亲水亲油平衡值(Hlb值)、浓度、温度、PH、溶剂组成及离子强度等因素对聚合物自组装形貌和微观特性参数的影响。此外,结合我们的研究工作对本征荧光光谱方法在聚合物研究中的应用做了阐述和展望,以期为两亲性聚合物的设计合成、自组装行为控制及应用提供参考。Preparation of new functional materials by self-assembly technique has become a hot research field of polymeric materials science.Most of the amphiphilic polymers,such as block copolymers,graft copolymers,star copolymers,dendrimers,part of the random copolymer and polyelectrolyte,etc.can self-assemble under certain conditions.In the study of polymer self-assembly,fluorescent technique has been widely used,especially fluorescent probe technique.According to the changes of the characteristic fluorescence parameters of the probe molecules,such as wavelength,intensity,polarization,lifetime,etc.the critical micelle concentration,temperature and pH dependence,the relationship of structure and self-assemble morphology of the polymer could be easily and accurately studied.This paper is focused on the application of the fluorescent probe technique in investigation of self-assembly behavior of amphiphilic polymers.The effects of hydrophilic lipophilic balance(HLB),concentration,temperature,pH,solvent composition,ionic strength,etc.on self-assemble morphology and microscopic characteristics parameters of amphiphilic polymers are particularly reviewed.Furthermore,based on our own research work,the applications of intrinsic fluorescence spectroscopy method in polymer investigation are elaborated.It will characterize the conformation transitions of macromolecules during the self-assembly process more truly.This paper aims at providing reference for design,polymerization,self-assembly controlling and applications of amphiphilic polymers.国家自然科学基金项目(No.51103123); 福建省自然科学基金项目(No.2012J01234)资

材料燃烧失效与防火阻燃特色课程体系建设的探索

阐述材料燃烧失效与防火阻燃课程建设的基本构想、定位和教学思路;从教材及教学内容优化、加强实验教学与革新教学方法、强化实践教学、规范课程管理模式入手,将其建设成材料学科的特色课程。国家自然科学基金(51173153;51103123); 福建省重大科技平台建设基金(2009J1009)、产学重大专项(2010H6021)、科技重点项目(2007T0013;2008H0033)、自然科学基金项目(2012J01234); 厦门市科技项目(3502Z20031078;3502Z20041054;3502Z20070010;3502Z20073006;3502Z20081045;3502Z20103004;3502Z20120015); 福建省产学研联合开发(省属)专项(闽经贸计

南海北部天然气水合物的形成分解与微生物的偶联关系

微生物在天然气水合物的形成和分解中扮演了重要的角色.南海北部是我国天然气水合物未来开发的战略选区之一,目前已多次在该海域采集到天然气水合物样品,证实了南海北部蕴藏着丰富的天然气水合物资源.通过分析天然气水合物形成与分解同微生物的偶联关系,综述了与天然气水合物形成分解有关的微生物类型及其标志化合物,结合我国南海北部天然气水合物赋存或潜在赋存区的微生物相关研究工作进展,提出未来使用微生物地球化学方法勘探天然气水合物的技术指标和相关的研究方向.国家自然科学基金(41773078,41276046);;厦门大学校长基金(0050-ZK1104

防火涂层材料研究及产业化中的关键技术开发的研究进展

综述了近年来钢结构建筑防火涂料、隧道防火涂料领域的国内外研究进展,重点叙述了本课题组在该领域近10年来取得的研究成果和产业化情况.在防火涂层材料的研究中,本课题组凝练出以下关键技术:功能性填料复配技术,提高功能组分的协同作用;功能性填充料的表面处理技术,解决了涂料相结构稳定性和膨胀炭层强度、均匀性、膨胀倍率等制约涂层防火性能的关键技术;聚合物/层状硅酸盐纳米插层技术在隧道防火涂料领域的首次应用;聚合物粘结剂和无机凝胶材料复配技术,提高涂层粘结性能的高温连续性,改善涂层耐水性、柔韧性;复合纤维自替代技术,实现耐火性能的连续性;超细活性粉料低温烧结技术,使涂层在较宽的温度下烧结形成陶瓷面(体),极大地提高了涂层高温下的强度和耐火性能

基于原位自由基共聚技术的复合水凝胶制备及表征

以聚乙二醇与马来酸酐的双酯化产物(MAh-PEG-MAh)、丙烯酰胺(AM)为单体,N,N’-亚甲基双丙烯酰胺(BIS)或对二乙烯基苯(DVB)为交联剂,通过原位自由基共聚法合成了一种复合水凝胶。利用FT-IR、1H-NMR、SEM、TEM表征了凝胶结构和形态;利用XRD研究了凝胶的结晶性;研究了单体用量、分子链段长度、交联剂等因素对凝胶力学性能的影响。研究表明,柔性链段MAh-PEG-MAh以一定尺寸的聚集微区分散于PAM连续相,增强水凝胶的结晶性,且分散相与连续相之间有良好的作用力,当MAh-PEG1K-MAh与AM的物质的量比为1∶8,复合水凝胶的压缩强度达到18.2 MPa左右,力学性能最佳