Materials Literature
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Six new poly (amide-imide)s (6a-f) were prepared under microwave irradiation by polycondensation reaction of diacid chloride (4) with 6 different derivatives of hydantoins (5a-f) using O-cresol as a microwave absorbent. These new PAIs were obtained in high yield and with inherent viscosities between 0.15 and 0.25 dL/g…
The two intermediate spin, five-coordinated complexes [Fe(nia) 2 Br 3 ](H 2 O) and [Fe(nia) 3 (H 2 0) 2 ](ClO 4 ) 3 were synthesized. Their spectroscopic, thermal and magnetic properties were characterized. The magnetic properties of both compounds are consistent with S = 3 / 2 ground state. Magnetic measurements over…
The influence of different nonionic and slightly cationic surfactants used only in bleaching of hairs before dyeing with C.I. Acid Blue 80 or only in dyeing on tensile stress/strain properties of dyed human hair was examined. The pretreatment of hair fibres before dyeing was carried out in alkali media with hydrogen p…
This investigation aims to develop a quantitative model to estimate the material removal of polycrystalline diamond composites by dynamic friction polishing. The model accounts for not only the polishing parameters that govern the material removal mechanisms, but also the constitutive properties of the diamond composi…
我们为软骨新生开发了混合脚手架和一个生物反应器。混合支架作为二个部件的联合被开发：可被细菌破坏的框架和包含 hydrogel chondrocytes。我们执行了 MTT 房间增长试金在脚手架的三种类型上比较 chondrocytes 的增长和生存能力：藻朊吃了胶化，混合支架，和藻朊吃海绵。房间在 2% 统帅玫瑰胶化被包含。生物反应器由一个发行量系统和一个压缩系统组成了。我们在生物反应器在这些统帅玫瑰胶化上执行了动态房间文化 3 天。
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The objective of most methods for mechanical testing of paper and paperboard is production control, i.e. to secure that the performance of the produced material fulfils certain minimum end‐use requirements. There is in the industry an ever increasing demand for improved efficiency in paper and board converting and end…
Porous mullite ceramics with low density and high strength were fabricated by TBA-based gelcasting process using tert-butyl alcohol(TBA) as shaping solvent.The pores of porous mullite ceramics formed from the quickly evaporation of TBA during drying of green bodies.Uniformly distributed and interconnected pores were o…
polythiophene 的各种各样的形态学被化学氧化聚合面对阶段转移设计了并且成功地准备了在水的媒介的催化剂(PTC ) cetyltrimethylammonium 溴化物(CTAB ) 。polythiophene 的形态学能被改变编校蚂蚁，氧化剂和阶段转移催化剂的集中在带子，纤维和球形的粒子中控制。结构，热稳定性和传导性被描绘了，并且为 polythiophene 的形态学的转变的机制被建议了。
Titania (TiO2) nanotubes have attracted great attention in recent years for diverse applications including photocatalysis, energy storage, solar cells, water purification, sensors, self-cleaning, molecular separation and drug delivery. This work presents synthesis of the self-organized TiO2 nanotube arrays by electroc…
Several studies have been reported on lithium phosphate glasses to which lithium halides and lithium sulphate have been added However, there has been no experimental results for the introduction of sodium fluoride into the lithium tungsten phosphate network How specifically this feature - mixed alkali in the presence…
Nickel(II) dipicolinate complex containing 2-amino-4- methylpyrimidine (2A-4Mpy), [Ni(2A-4Mpy)(dpc) (H_2O)_2] . 2H_2O was synthesized in solid state and its structural and spectroscopic properties were determined by XRD, IR, and UV-Vis techniques. The crystal data revealed that the Ni complex is in triclinic crystal s…
The study of growth in Katelysla opima has been attempted by length-frequency method which showed that this clam grows to a size of 22 mm, 31 mm and 43 mm by the end of its first, second and third year of life. Length-height and length-breadth relationships were seen to be of the linear type. The relation between leng…
We report a new set of rheological data on well controlled aqueous foams. We investigate and analyze how the linear viscoelastic regime, the foam yielding and the non-linear regimes above yielding actually depends on the interfacial properties, bubble size, liquid fraction and foam age. Results are compared to previou…
In this work we report a novel technique for obtain thiol capped CdTe colloidal quantum dots in one step. These nanoparticles are compatible for silica capping indicating their possible use as fluorescent markers.
Photoreactivities of 5–bromouracil– or 5–iodouracil–containing DNA have widely been used as DNA–protein photocrosslinking to investigate their interface. We have accumulated the photoreactivities of 5–bromouracil or 5–iodouracil in various DNA local structures. It was found that hydrogen abstraction by uracil–5–yl rad…
In order to contribute to the ongoing discussion on the reliability of epoxy (EP) and polyurethane (PUR) adhesives for load bearing structures, a study was conducted at LNEC where several structural adhesives were subjected to several temperature regimes and subsequently assessed, namely to compare their glass transit…
Based on microscopic observation,the fibrous structure,surface hardness distribution of cold rolling involute spline were studied.The procedure of equiaxed grain drawn into fibrous structure,and the reason of tooth profile work-hardening in the forming process of rolling into spline were discussed.The tests indicate t…
We report on a systematic micro-Raman and IR spectroscopic investigation of PEO-LiCF3SO3 polymer electrolytes, aimed at revealing the microstructure of ionically conductive amorphous PEO:Li+ complexes. Films (O:Li = 3:1 and 9:1, thickness 2-30 ?m) were cast from acetonitrile solutions and further subjected to differen…
The purpose of this study is to analyze the dyeability of polyester(PET) fabric by thermal bonding with low melting component of bicomponent fiber and to describe the change of physical properties of thermal bonded PET fabrics. The PET fabrics were prepared with regular PET fiber as warp and bicomponent fiber as weft.…