多孔钛材料制备工艺研究进展

多孔钛材料由于其优异的物理化学性能因此其制备及相关性能研究得到广泛关注,但其作为骨植入材料时因存在表面惰性制约其在生物医学方面应用。目前,用于多孔钛材料制备方法有空间占位法、金属粉末注射成形和树脂浸渍钛替代技术等。其中着重叙述采用碳酸氢铵和尿素作为造孔剂使用空间占位法时在该材料的运用,并且对比不同造孔剂在该方法中的优缺点。此外进一步分析阐明因表面惰性问题而造成多孔钛材料在生物医学方面应用的制约因素。     

基于木材的电磁屏蔽材料的研究进展

随着信息技术的不断发展,电磁干扰（EMI）等问题日益严重,需要构建更先进的电磁干扰屏蔽材料。天然木材本身有着多孔的结构,碳化后保留为三维（3D）骨架,构成巨大导电网络,可作为电磁干扰屏蔽的理想材料。将木基多孔材料与磁性材料、导电材料复合,优化材料的结构与性能,为屏蔽材料的优化提供了思路。本文介绍了天然木材的复合方法,着重综述了木材作为电磁屏蔽材料的最新研究进展,并对其发展前景进行了展望。     

丝素多孔海绵的研究进展

丝素多孔海绵材料在组织工程、组织诱导、药物控释等生物医学领域具有广阔的应用潜力.其制备方法主要有冷冻干燥法、盐析法和发泡法.通过与其他高分子的共混,可进一步调节多孔海绵的性能.本文综述了丝素多孔海绵的制备方法、结构和性能的研究进展.     

生物质基柔性气凝胶的制备及应用

气凝胶是一种新型多孔材料,具有许多优异的性能.无论是有机的、无机的还是混合的气凝胶,都被证明具有生物相容性.基于独特的三维网状结构和优异的力学性能,以气凝胶为基础合成的材料在建筑学和医学等领域引起了广泛的关注.本文综述了气凝胶材料的一般特性及合成方法,重点介绍了生物质基柔性气凝胶的制备及应用.     

多孔二氧化钛材料在光催化转化CO2中的应用研究进展

近年来,CO2的排放使温室效应加剧,因此减少CO2的排放刻不容缓.多孔TiO2材料在光催化转化CO2中表现了优异的催化性能.首先介绍了多孔TiO2材料在催化转化CO2中的应用研究进展,包括单一孔TiO2材料光催化转化CO2和掺杂改性多孔TiO2材料光催化转化CO2.其次对多孔TiO2材料的制备和优势也进行了简单的介绍....     

多孔阳极氧化铝模板在纳米材料方面的制备及应用

纳米材料因其优异的光、电、磁等性能受到越来越多的关注,如何获得排列规整的纳米结构阵列成为研究热点。文章介绍了多孔阳极氧化铝模板的制备和采用多孔阳极氧化铝模板制备纳米材料的方法,以及基于多孔阳极氧化铝模板的纳米材料的应用。     

植物纳米纤维薄膜研究进展

植物纳米纤维具有良好的力学及光学性能、精细的纳米结构、优异的生物相容性,可用于制备层状多孔的纳米纤维薄膜。文章概述了植物纳米纤维的制备、成膜的主要方法及其原理,详细介绍了植物纳米纤维薄膜优异的力学、光学及阻隔等性能及其在包装材料、防伪印刷、生物医药、储能材料和柔性显示器件等领域的应用研究进展,并对其未来应用前景进行了展望。     

静电纺多级结构空气过滤材料的研究进展

为促进静电纺纳米纤维在空气过滤领域中的应用,开发性能更加优异的新型纳米纤维空气过滤膜,以近年来国内外静电纺丝技术制备多级结构纳米空气过滤材料的相关研究为基础,综述了静电纺制备具有微纳米凸起、纳米蛛网、层层复合、多孔、刺状、树枝状及核壳等结构空气过滤材料的最新研究进展,分析和讨论了多级结构微纳米空气过滤材料的制备方法,指出了现有研究中存在的不足,并对未来的发展方向进行了总结和展望。认为多级结构可有效实现过滤材料高效率、低阻力、高强度、阻燃等的功能化,相较于传统的纳米纤维过滤材料具有更好的应用前景。     

吸声隔音功能纺织材料的研究现状及进展

由于纺织材料在中低频声波段的吸声隔音能力薄弱，为提高其在中低频区域的降噪性能，制备出吸声隔音性能更加优异的纺织材料，对相关研究现状进行了综述。文章首先介绍了纺织材料的吸声隔音的优势和吸声隔音机制；随后详细介绍了多孔吸声复合降噪材料、多孔与共振复合降噪材料、多孔与阻尼复合降噪材料这3种纺织复合降噪材料的研究进展；最后指出未来吸声隔音纺织材料的开发应朝着结构多样化、材料复合化、方式智能化以及绿色环保的方向发展。     

植物模板法多孔材料的制备及在卷烟中的应用

基于天然植物在宏观、微观和化学组分上所展现出的优异特性,以天然植物紫茎泽兰为模板进行复杂结构的多孔材料开发。以具有特殊空间结构的紫茎泽兰茎为模板,利用简单易行的路线合成具有多级结构、高比表面积的复合多孔材料,并初步进行卷烟烟气有害成分降低效果评价。结果表明,所制备的复合多孔材料在不改变卷烟抽吸品质的前提下,对主流烟气中的巴豆醛、氨和苯酚具有选择性降低效果,同时对卷烟的危害性指数也有一定程度的降低。     

Reliable identification of grapevine rootstock varieties using RAPD PCR on woody samples

Since grapevine ( Vitis spp .) rootstock material is being traded increasingly as disbudded woody material a lack of distinctive morphological features on such material necessitates an alternative and reliable means of identification. Methods described here were developed for rapid and efficient extraction of DNA from woody samples rich in phenolic compounds and polysaccharides, and for subsequent identification of varieties by RAPD PCR. Using these methods, and with the application of only one selected RAPD primer, we were able to differentiate sixteen rootstock varieties, including the seven varieties most commonly used in Germany. Problems commonly encountered with reproducibility of RAPD patterns were avoided by choosing primers with a dinucleotide sequence and a high G/C content that allowed a rather high annealing temperature of 45°C. Methods described here should also be useful for other horticultural crops, especially those with woody tissues rich in phenolic compounds and polysaccharides.     

Aroma characterization of various apricot varieties using headspace–solid phase microextraction combined with gas chromatography–mass spectrometry and gas chromatography–olfactometry

The characterization of the aromatic profile of several apricot cultivars with molecular tracers in order to obtain objective data concerning the aromatic quality of this fruit was undertaken using headspace–solid phase microextraction (HS–SPME). Six apricot cultivars were selected according to their organoleptic characteristics: Iranien, Orangered, Goldrich, Hargrand, Rouge du Roussillon and A4025. The aromatic intensity of these varieties measured by HS–SPME–Olfactometry were defined and classified according to the presence and the intensity of grassy, fruity and apricot like notes. In the six varieties, 23 common volatile compounds were identified by HS–SPME–GC–MS. Finally, 10 compounds, ethyl acetate, hexyl acetate, limonene, β-cyclocitral, γ-decalactone, 6-methyl-5-hepten-2-one, linalool, β-ionone, menthone and (E)-hexen-2-al were recognized by HS–SPME–GC–O as responsible of the aromatic notes involved in apricot aroma and considered as molecular tracers of apricot aromatic quality which could be utilized to discriminate apricot varieties.     

Tests of potential functional barriers for laminated multilayer food packages. Part I: Low molecular weight permeants

The advent of the functional barrier concept in food packaging has brought with it a requirement for fast tests of permeation through potential barrier materials. In such tests it would be convenient for both foodstuffs and materials below the functional barrier (sub-barrier materials) to be represented by standard simulants. By means of inverse gas chromatography, liquid paraffin spiked with appropriate permeants was considered as a potential simulant of sub-barrier materials based on polypropylene (PP) or similar polyolefins. Experiments were performed to characterize the kinetics of the permeation of low molecular weight model permeants (octene, toluene and isopropanol) from liquid paraffin, through a surrogate potential functional barrier (25 μm-thick oriented PP) into the food simulants olive oil and 3% (w/v) acetic acid. These permeation results were interpreted in terms of three permeation kinetic models regarding the solubility of a particular model permeant in the post-barrier medium (i.e. the food simulant). The results obtained justify the development and evaluation of liquid sub-barrier simulants that would allow flexible yet rigorous testing of new laminated multilayer packaging materials.     

Analysis of benzo[a]pyrene in spiked fatty foods by second derivative synchronous spectrofluorimetry after microwave-assisted treatment of samples

A simple, rapid and inexpensive method has been developed for the determination of benzo[a     

The development of reference materials for paralytic shellfish poisoning toxins in lyophilized mussel. II: Certification study

This paper describes the second part of a project undertaken to develop certified mussel reference materials for paralytic shellfish poisoning toxins. In the first part two interlaboratory studies were undertaken to investigate the performance of the analytical methodology for several PSP toxins, in particular saxitoxin and decarbamoyl-saxitoxin in lyophilized mussels, and to set criteria for the acceptance of results to be applied during the certification exercise. Fifteen laboratories participated in this certification study and were asked to measure saxitoxin and decarbamoyl-saxitoxin in rehydrated lyophilized mussel material and in a saxitoxin-enriched mussel material. The participants were allowed to use a method of their choice but with an extraction procedure to be strictly followed. The study included extra experiments to verify the detection limits for both saxitoxin and decarbamoyl-saxitoxin. Most participants (13 of 15) were able to meet all the criteria set for the certification study. Results for saxitoxin.2HCl yielded a certified mass fraction of <0.07 mg/kg in the rehydrated lyophilized mussels. Results obtained for decarbamoyl-saxitoxin.2HCl yielded a certified mass fraction of 1.59+/-0.20 mg/kg. The results for saxitoxin.2HCl in enriched blank mussel yielded a certified mass fraction of 0.48 +/- 0.06 mg/kg. These certified reference materials for paralytic shellfish poisoning toxins in lyophilized mussel material are the first available for laboratories to test their method for accuracy and performance.     

Announcing a new international peer-reviewed journal:Food Science and Human Wellness now accepting manuscript submission in English

<正>We are pleased to announce the launch of a new international peer-reviewed journal-Food Science and Human Wellness,ISSN 2213-4530,which is an open access journal,produced and hosted by Elsevier B.V.on behalf of Beijing Academy of Food Sciences.Food Science and Human Wellness is an international peer-reviewed English journal that provides a forum for the dissemination of the     

Chinese CTP Market

According to Printing and Printing Equipment Industries Association of China（PEIAC）＇s statistics to the plate manufucturer in China, in 2013, the actual offset plate production has reached 346 million square meters in China. Among them, the CTP production volume was 245 million square meters, up by 11% than that of last year; the total sales of the CTP plate was 239 million square meters, up by 13%.     

Preparatory Work of Print China 2015 is Going Smoothly

正Held at Guangdong Modern International Exhibition Center,Print China 2015 will cover 7exhibition halls,besides the original Hall No.3,4,5,6,7,the newly built F zone of Hall 3 will be used too.The total area will be140,000 square meters.Hall 3:Offset and large printing equipment,package printing equipment,post press     

INFOPRINT 2014 was Successfully Held in Dongguan

Sponsored by Printing and Printing Equipment Industries Association of China （PEIAC） and organized by Print China magazine, the Seventeenth Beijing International Printing Information Conference （INFOPRINT 2014） was successfully held on 11th Dec. 2014 at Dongguan Exhibition International Hotel.