Utilização de técnicas de análise de franjas para a avaliação de dimensões de lesões na pele
bons momentos que passamos juntos neste período.
Materials Literature
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Impact of Local Lattice Disorder on Spin and Orbital Orders in Ca$_{2-x}$Sr$_x$RuO$_4$
We have studied relationship between local lattice disorder, Ru 4$d$ spin-orbit interaction, and global spin/orbital orders of Ca$_{2-x}$Sr$_x$RuO$_4$ in the Sr-rich and Ca-rich regions of its phase diagram by using unrestricted Hartree-Fock calculation on a $8\times8$ RuO$_4$ lattice model. The calculations show that…
An evaluation of oyster stocks, grow-out conditions, and off-bottom culture methods for increasing commercial production of eastern oysters (Crassostrea virginica) in the northern Gulf of Mexico
This project examined the ecologically and economically valuable eastern oyster (Crassotrea virginica) in Louisiana with two field experiments. Little information has been gathered on the performance of local Louisiana oyster stocks and no study has focused on a comparison of stocks among variable estuarine conditions…
Polymer Microgels for Catalysis
Abstract In this article, the recent advances in polymer‐based microgels for catalysis are reviewed. Discussion is directed to the smart design of catalyst‐embedded microgels and the catalytic performance. Polymer microgels consist of intramolecularly cross‐linked globular architectures with the dimensions of nano‐ or…
The synthesis and mesomorphic properties of 4-n-alkoxyphenyl 4-[(4-n-alkoxy-2,3,5,6-tetrafluorophenyl)ethyl]benzoates
4-n-Alkoxyphenyl4-[(4-n-alkoxy-2,3,5,6-tetrafluorophenyl)ethynyl]benzoates (compound A) are synthesised by a convenient method. These compounds exhibit only enantiotropic nematic phases and have very high clearing points. These compounds (As) can be transformed into corresponding ethane derivatives, via hydrogenation…
xAu/α-MnO2催化剂的结构及催化氧化VOCs气体性能
以NaOH为沉淀剂,采用沉积-沉淀法制备了α-MnO2负载Au催化剂xAu/α-MnO2（x=1.0%～7.0%,质量分数）,利用X射线衍射（XRD）、N2吸附-脱附、H2程序升温还原（H2-TPR）、透射电子显微镜（TEM）和X射线光电子能谱（XPS）等技术对所得样品进行了表征,并对其催化氧化挥发性有机化合物（VOCs,苯和甲苯）的性能进行了研究.XRD结果表明,负载Au对α-MnO2载体结构影响不大,但对其晶粒大小和比表面积略有影响.随着Au含量的增加,α-MnO2结晶度增强,颗粒增大,Au粒径明显增大.XPS结果表明,随着Au负载量的增加,xAu/α-MnO2的晶格氧（O2-）,Mn4＋和Au3＋的浓度增加.H2-TPR结果…
The Use of chitosan in The Formation of Silver Nanoparticles, Chitosanic Nanoparticles and Fibrous Structures.
North Carolina State University Theses Textile Engineering, Chemistry and Science.
Evaluation of alkali metals salts solubility
Calculation of alkali metals salts solubility is made using two approaches: thermodynamic (or power) and on values of charge and ionic radius sizes. The estimation of salts and oxyhydroxides solubility for elements of 1А subgroups of periodic table is given.
Calculation-experimental determination of material functions of stainless steel 12Х18H10Т
The paper considers the main points and the equations of the theory of elasto-plastic deformation. There are allocated the material functions, trailing the theory. The basic experiment and the method of identification of material functions are formulated. On the basis of the experiment there are determined material fu…
Deformation of a three-layer spherical shell with compressible filler under the influence of acoustic pressure waves
The exact solution of the problem of the dynamic response of a three-layer spherical shell immersed in a fluid under the action of external hydrodynamic pressure is built in the acoustic approximation. The system of differential equations of motion of the shell of the 14th order, taking into account the transverse she…
Studi Tentang Ekologi dan Habitat Planaria, Sp. di Subang: Kelimpahan dan Biomassa Merupakan Indikator Kualitas Air Bersih
Planaria sp. in Bukit Tunggul (Lembang) is rare within 10 years. This animal is sensitive to polluted water. Beside that, the number of this animal is decreasing due to alteration of landuse and climate change. This animal plays an important role as a bioindicator for clean water and as a media in learning of biology…
PREPARATION OF QUERCETIN-NI(Ⅱ) IMPRINTED POLYMER BY ELECTRON BEAM RADIATION POLYMERIZATION AND ITS RECOGNITION CHARACTERISTICS
以电子束为辐照射线源,采用辐射聚合法成功制备了槲皮素-Ni(Ⅱ)金属配位分子印迹聚合物.通过紫外光谱研究了槲皮素与Ni(Ⅱ)之间的配位结构、配位作用方式及配位比,并按照1∶2的比例形成稳定配合物,同时也验证了槲皮素、Ni(Ⅱ)及功能单体甲基丙烯酸三者发生了金属配位印迹作用.利用红外光谱对产物的结构进行了表征.透射电镜、扫描电镜、吸附动力学实验分别考察辐射剂量对聚合物的微观形貌、吸附动力学性能的影响,结果表明辐射剂量对印迹聚合物的吸附性能有显著影响.同时选择性吸附实验结果显示该印迹聚合物对槲皮素-Ni(Ⅱ) 配合物表现出明显的吸附选择性和特异性,最大结合量可达82.22 mol/g.对黄芩素和柚皮素的吸附选择性较差,分离因子分别为3…
The Impact of Synthesis Conditions on the Structure and Properties of Di-(Stearylamidoethyl) Epoxypropyl Ammonium Chloride
Both alkylketene dimer (AKD) and alkenyl succinic anhydride (ASA) are widely used neutral papermaking sizing agents. However, AKD has the issue of sizing hysteresis, while ASA requires on-site emulsification. In addition, both reagents are readily hydrolyzed. Di-(stearylamidoethyl) epoxypropyl ammonium chloride (DSEAC…
Catalytic destruction of organic contaminants by galvanochemical oxidation
The possibility of intensifying the catalytic destruction of phenol by galvanochemical oxidation was confirmed experimentally. The treatment time can be reduced due to the sluggish occurrence of chain radical oxidation (aftereffect). The oxidation can be performed in less acidic media in the presence of chlorides. The…
Study on FBR core concepts to increase proliferation resistance of plutonium in LWR–FBR transition period
The possibility to enhance proliferation resistance of discharged plutonium in fast breeder reactor (FBR) has been investigated in terms of reactor core-design aspects. The provisional target for proliferation resistance measures based on Saito's attractiveness (ATTR) is defined. It is found that a few percent of plut…
Kinetics of the oxidation of hexacyanoferrate(III) with pyrolusite
It is established that the oxidation of potassium ferricyanide at pH 7–11 proceeds as a pseudo-second-order reaction with rate constants of 2.93, 4.19, 6.16, 8.66, and 9.22 L/(mol min) at 313, 323, 333, 343, and 353 K, respectively. The activation energy of the reaction is found to be 27.82 kJ/mol. The second order of…
1,1′-(Ethane-1,2-diyl)dipyridinium bis(1,2-dicyanoethene-1,2-dithiolato-κ2S,S′)cuprate(II)
In the title ion-pair complex, (C12H14N2)[Cu(C4N2S2)2], the complex anion exhibits a highly twisted coordination environment around the tetra-coordinated Cu(II) atom. The dihedral angles between the 1,2-di-cyano-ethene-1,2-di-thiol-ato ligands and between the two pyridine rings in the cation are 37.49 (3) and 29.18 (1…
A Facile and Rapid Sonochemical Route to Synthesize Highly Ordered Mesoporous Silicas MCM‐48 and Al‐MCM‐48 with Ia3d Cubic Structure Using Gemini Surfactant
Abstract Highly ordered cubic mesoporous silicas MCM‐48 and Al‐MCM‐48 with high surface areas were successfully synthesized using Gemini surfactant as template under basic conditions within a very short time period with the aid of ultrasonic irradiation. The introduction of ultrasonic irradiation as an intermediate sy…
Effect of interfacial interactions on the crystal growth rate in model PE/SiO 2 nanocomposites: Comparing experiments with Lauritzen‐Hoffman model and MD simulation
Nanoparticles with engineered surface chemistry represent novel means in controlling the in‐situ formation of property‐specific supramolecular structure in advanced processing technologies of semicrystalline polymers. Often, the published experimental data on effects of interfacial adhesion on the crystallization kine…
Physicochemical properties and catalytic activity of metal tetraphenyl porphins in the oxidation of alkylaromatic hydrocarbons
We consider the effect of complexing metal in a tetraphenylporphin molecule on its catalytic activity in oxidizing alkylaromatic hydrocarbons by molecular oxygen. The catalytic activity of metal porphyrins (Co, Cu, Zn, Mn, and In TPP) is found to depend on their oxidation potentials and the distribution of electron de…