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Characterization and Study of Biodegradation Effect on the Creep Behavior of High Density Polyethylene/ Cellulose Blend

Michael Nakitare Waswa、Richard B. Kipkemboi、Martin Riara2013-09-14OpenAlex

High density polyethylene (HDPE) and cellulose (CELL) were used to prepare the samples used in this study. A fungal strain was isolated from the dumpsite capable of adhering to HDPE surface.The fungal strain was identified as Aspergillus niger. Blend composition was varied and the effect of Aspergillus niger on the cr…

Natural Fiber Reinforced Compositesbiodegradable polymer synthesis and propertiesMicroplastics and Plastic Pollution

Preparasi Ion Cu yang didukung oleh ZnAl2O4

Eka Angasa、Ghufira、Sal Prima Yudha S 等 6 位作者2013-09-14Prosiding SEMIRATA 2013

Preparasi ion Cu yang didukung oleh ZnAl2O4 dilakukan melalui dua tahap. Pertama sintesis ZnAl2O4 dengan metoda keramik dan kedua impregnasi ion Cu pada ZnAl2O4. Material yang dihasilkan dikarakterisasi dengan XRD, EDX, dan SEM. Difraktogram ZnAl2O4 mempunyai pola difraksi yang sama dengan ion Cu yang didukung ZnAl2O4…

Catalytic Processes in Materials ScienceCatalysis and Hydrodesulfurization StudiesNanomaterials for catalytic reactions

Analysis of surface polyimide composite films with SiO filled by atomic force microscope

А В Мурадов、А. И. Купчишин2013-09-14Chemical Bulletin of Kazakh National University

\nМетодом атомной силовой микроскопии исследована морфология поверхности полиимидной пленки и системы «Полиимид – SiO наполнитель». На поверхности композита визуализированы неровности различного масштаба, представляющие собой глобулы полимера и их композиций с частицами наполнителя. Выявлены изменения поверхности поли…

Synthesis and properties of polymersTribology and Wear AnalysisMaterial Properties and Applications

Characterization of CpdC, a Large-Ring Lactone-Hydrolyzing Enzyme from Pseudomonas sp. Strain HI-70, and Its Use as a Fusion Tag Facilitating Overproduction of Proteins in Escherichia coli

Yali Xu、Stephan Große、Hiroaki Iwaki 等 5 位作者2013-09-14Applied and Environmental Microbiology

There are few entries of carbon-carbon bond hydrolases (EC 3.7.1.-) in the ExPASy database. In microbes, these enzymes play an essential role in the metabolism of alicyclic or aromatic compounds as part of the global carbon cycle. CpdC is a ω-pentadecalactone hydrolase derived from the degradation pathway of cyclopent…

Enzyme Catalysis and ImmobilizationEnzyme Structure and FunctionEnzyme Production and Characterization

The experimental and theoretical investigations of the influence of electron irradiation on the IR spectra of polyimide materials

K.B. Tlebaev、V. Z. Gabdrakipov、Ф. Ф. Комаров 等 6 位作者2013-09-14Chemical Bulletin of Kazakh National University

The IR spectrum of polyimide films produced on the basis of Hydroxy-4, 4-dianiline and lacquer ABimida was measured. The carried out quantum-chemical calculations of the spectra within the Hartree-Fock approximation MDDP PM3 on the model material (a copolymer of dianhydridethreecyclodetsentetra carboxylic acid and dia…

Synthesis and properties of polymersPhotopolymerization techniques and applicationsMaterial Properties and Applications

Nucleation and growth of cadmium sulfide and telluride nanoparticles

М. Б. Дергачева、N. Gudeleva、K. Leontyeva 等 5 位作者2013-09-14Chemical Bulletin of Kazakh National University

Методом хроноамперометрии изучена кинетика процесса нуклеации и роста электроосажденных нанокристаллов CdS и CdTe для тонкопленочных солнечных элементов. Проведено сопоставление экспериментальных данных с теоретическими моделями. Установлено, что в зависимости от условий электроосаждения, нуклеация и рост CdTe и CdS о…

Chalcogenide Semiconductor Thin FilmsSolidification and crystal growth phenomenananoparticles nucleation surface interactions

Development of scientific basis of obtaining technology and study the properties of dielectric materials based on polymers and ionic crystals with the use of irradiation

K.B. Tlebaev、А. И. Купчишин2013-09-14Chemical Bulletin of Kazakh National University

\nThe scientific and methodological fundamentals of new composite materials were developed, as well as the experimental studies depending on stress-strain and thermal properties of the various polymers, dielectrics (KBr, KCL, etc.) and their compositions using irradiation. The most interesting results were obtained fo…

Material Properties and ApplicationsAerospace, Electronics, Mathematical ModelingPolymer Science and Applications

Peculiarities of methylene blue adsorption on the diatomite surface

Kuralay Korzhynbayeva、R. Medetkhan、Marisol Morales Díaz 等 5 位作者2013-09-14Chemical Bulletin of Kazakh National University

Изучена адсорбция красителя метиленового голубого на поверхности диатомита. Установлено, что адсорбция протекает за счет электростатического взаимодействия катионов красителя и силанольных групп диатомита. Исследование влияния рН среды на эффективность адсорбции показало, что величины адсорбции повышаются с ростом рН…

Diatoms and Algae Research

Some peculiarities of bitumen emulsion modification

A. Batyrbayev、S. V. Rodivilov、B. Myrzakhmetov2013-09-14Chemical Bulletin of Kazakh National University

Изучен процесс модификации эмульсий из битума отечественного производства с использованием ряда промышленных эмульгаторов. Рассмотрено влияние концентрации полимерного модификатора на физико-механические показатели эмульсий с различным содержанием битума. Показана возможность получения модифицированных эмульсий с высо…

Asphalt Pavement Performance EvaluationIndustrial Engineering and TechnologiesMaterial Properties and Failure Mechanisms

Potentiometric determination of peroxodisulfuric acid during electrolysis sulfuric acid

Fedor Malchik、K. Tishenko、Svetlana Kalugina 等 4 位作者2013-09-14Chemical Bulletin of Kazakh National University

Предложены два потенциометрических метода определения пероксодисерной кислоты в процессе электролиза серной кислоты (потенциометрическое титрование и метод прямой потенциометрии), основанных на ее взаимодействии с известным избытком титрованного раствора Fe2+.

Analytical Chemistry and SensorsAdvanced Chemical Sensor TechnologiesThermal and Kinetic Analysis

Palladium - potassium humate coated by Polymetallic catalysts for the process of hydrogenation of nitrocompounds

E. Yermoldina、Zhaksyntay Kairbekov2013-09-14Chemical Bulletin of Kazakh National University

\nResults of studies of humic substances in the quality of natural polymeric modifier for the coated palladium catalysts are presented in the paper. Synthesis of new catalysts based on palladium - potassium humate fixed on various inorganic carriers and their catalytic properties have been studied. The catalysts of 0,…

Material Properties and ApplicationsMaterial Science and ThermodynamicsAquatic and Environmental Studies

Hydrocarbon composition products of the catalytic recycling plastics waste

Zhaksyntay Kairbekov、Yermek Aubakirov、Zheneta Tashmukhambetova 等 4 位作者2013-09-14Chemical Bulletin of Kazakh National University

В работе представлены результаты анализа углеводородного состава продуктов каталитической переработки отходов пластмасс методом ИК-спектроскопии. Установлены оптимальные условия проведения процесса гидрогенизации с получением жидкого продукта, обогащенного ароматическими, парафиново-нафтеновыми и ненасыщенными углевод…

Material Properties and ApplicationsAdvanced Theoretical and Applied Studies in Material Sciences and GeometryCoal Combustion and Slurry Processing

Excellent magnetocaloric effect exhibited in the dense inorganic framework material Gd(OH)CO3

Yan‐Cong Chen、Zhao‐Sha Meng、Lei Qin 等 11 位作者2013-09-14arXiv (Cornell University)

The excellent magnetocaloric effect of a dense inorganic framework, orthorhombic Gd(OH)CO3, is evaluated by isothermal magnetization and heat capacity measurements. The large -ΔSm, both in gravimetric and volumetric units, place it as a great candidate for cryogenic magnetic cooler.

Magnetic and transport properties of perovskites and related materialsMagnetism in coordination complexesThermal Expansion and Ionic Conductivity

Non-labelled surface sensitive techniques as platforms for pharmaceutical nanotechnology research

Huamin Liang2013-09-14Työväentutkimus Vuosikirja

Insufficient delivery of drugs to the target sites like tumors and cells has been a barrier for achieving satisfying therapeutic effects in many diseases. Distribution and exposure of drugs to normal and healthy tissues may enhance the possibility of side effects and toxicity in vivo. Nanoparticle (NP) drug delivery s…

Advanced biosensing and bioanalysis techniquesPolymer Surface Interaction StudiesNanofabrication and Lithography Techniques

Estimating statistical uncertainties on powder diffraction and small angle scattering data from 2-D planar x-ray detectors

Xiaohao Yang、Pavol Juhás、Simon J. L. Billinge2013-09-14arXiv (Cornell University)

This paper describes optimal methods for obtaining 1D powder pattern intensities with correct standard deviations from 2D planar detectors. We describe methods to estimate uncertainties when the same image is measured in multiple frames as well as from a single frame. We show the importance of considering the correlat…

Medical Imaging Techniques and ApplicationsNuclear Physics and ApplicationsX-ray Diffraction in Crystallography

Inelastic neutron scattering studies of YFeO$_3$

Steven Hahn、A. Podlesnyak、R. S. Fishman 等 8 位作者2013-09-14arXiv (Cornell University)

Spin waves in the the rare earth orthorferrite YFeO$_3$ have been studied by inelastic neutron scattering and analyzed with a full four-sublattice model including contributions from both the weak ferromagnetic and hidden antiferromagnetic orders. Antiferromagnetic (AFM) exchange interactions of $J_1 = -4.23 \pm 0.08$…

Magnetic and transport properties of perovskites and related materials

Construction of Lie superalgebras from triple product systems

Susumu Ôkubo2013-09-14OpenAlex

Abstract. Any simple Lie superalgebras over the complex field can be constructed from some triple systems. Examples of Lie superalgebras D(2,1;α), G(3) and F(4) are given by utilizing a general construction method based upon (−1,−1) balanced Freudenthal-Kantor triple system. 1. LIE AND ANTI-LIE TRIPLE SYSTEMS The trip…

Mesoporous Materials and CatalysisAdvanced Topics in Algebra

Theoretical thermodynamic analysis of a closed-cycle process for the conversion of heat into electrical energy by means of a distiller and an electrochemical cell

A. Carati、Massimo Marino、Doriano Brogioli2013-09-14arXiv (Cornell University)

We analyse a device aimed at the conversion of heat into electrical energy, based on a closed cycle in which a distiller generates two solutions at different concentrations, and an electrochemical cell consumes the concentration difference, converting it into electrical current. We first study an ideal model of such a…

Advanced Thermoelectric Materials and DevicesAdvanced Thermodynamics and Statistical MechanicsAdvanced battery technologies research

Fredholm indices and the phase diagram of quantum Hall systems

J. E. Avron、Lorenzo Sadun2013-09-14OpenAlex

The quantized Hall conductance in a plateau is related to the index of a Fredholm operator. In this paper we describe the generic “phase diagram ” of Fredholm indices associated with bounded and Toeplitz operators. We discuss the possible relevance of our results to the phase diagram of disordered integer quantum Hall…

Graphene research and applicationsQuantum and electron transport phenomenaTopological Materials and Phenomena

Growth of hexagonal polyaniline fibers with polyacrylamide pendants

Xiaoxu Chen、Hongyuan Cai、Qunwei Tang 等 6 位作者2013-09-14Polymer Composites

A new concept of synthesizing hexagonal polyaniline (PANi) fibers with polyacrylamide (PAAm) pendants in PAAm oligomer (oligo‐PAAm) colloid is proposed. The size and morphology of the composite fibers can be controlled by adjusting the synthesis conditions. A possible growth mechanism of the PANi microstructures based…

Supercapacitor Materials and FabricationAdvanced Sensor and Energy Harvesting MaterialsConducting polymers and applications