Oya Gal o lu Atici, Ahmet Akar, Yusuf Ayar, O uz Mec t,
Polymerization and copolymerization of vinyl monomers such as acrylamide, acrylonitrile, vinyl acetate, and acrylic acid with a redox system of Ce(IV) and organic reducing agents containing hydroxy groups were studied. The reducing compounds were poly(ethylene glycol)s, halogen-containing polyols, and depolymerization products of poly(ethylene terephthalate). Copolymers of poly(ethylene glycol)s-b-polyacrylonitrile, poly(ethylene glycol)s-b-poly(acrylonitrile-co-vinyl acetate), poly(ethylene glycol) ...
Tópico(s): biodegradable polymer synthesis and properties
1999 - Wiley | Journal of Applied Polymer Science
Metin Uz, Sacide Alsoy Altınkaya,
In this study, cellulose acetate (CA) based mono and multilayer films including potassium sorbate (Psb) as an antimicrobial agent were prepared using dry phase inversion technique. To achieve appropriate controlled release of Psb, the structure of the films was changed by manipulating the film preparation conditions. In particular, the initial casting composition, wet casting thickness and drying temperature were varied. Results indicate that Psb release rate decreased as the CA content in the casting ...
Tópico(s): Polydiacetylene-based materials and applications
2011 - Elsevier BV | LWT
A. Zehra Aro uz, Bahatti̇n M. Baysal,
The miscibility of the binary and ternary blends of poly(2,6-dimethyl-1,4-phenylene oxide), brominated polystyrene, and polystyrene was investigated using a differential scanning calorimeter. The morphology of these blends was characterized by scanning electron microscopy. These studies revealed a close relation between the blend structure and its mechanical properties. The compatibilizing effect of poly(2,6-dimethyl-1,4-phenylene oxide) on the miscibility of the polystyrene/brominated polystyrene ...
Tópico(s): Advanced Physical and Chemical Molecular Interactions
2000 - Wiley | Journal of Applied Polymer Science
A. Mushtaq, Massod Iqbal, Ishtiaq Hussain Bokhari, Tariq Mahmood, Tayyab Mahmood, Zahoor Ahmad, Qamar Uz Zaman,
Neutronic and thermal hydraulic analysis for the fission molybdenum-99 production at PARR-1 has been performed. Low enriched uranium foil (<20% 235U) will be used as target material. Annular target designed by ANL (USA) will be irradiated in PARR-1 for the production of 100 Ci of molybdenum-99 at the end of irradiation, which will be sufficient to prepare required 99Mo/99mTc generators at PINSTECH and its supply in the country. Neutronic and thermal hydraulic analysis were performed using various codes. ...
Tópico(s): Nuclear Materials and Properties
2007 - Elsevier BV | Annals of Nuclear Energy
Gürsel Yanık, Fahri Esenli, Veli Uz, Vildan Esenli, Bektaş Uz, Tacıt Külah,
The Kesan–Karlikoy kaolin occurrence is located in the SW Thrace (Turkey) and was formed by the alteration of tuffaceous rocks. The tuff and tuffaceous units are made up of (1) bentonite, (2) kaolin and (3) zeolite (mordenite-rich), from bottom to top. The 20–40 m thick kaolin level is beige, yellowish and whitish beige in color and sandy tuff in appearance. The alteration of the rock to kaolin was explained by chemical, optical and scanning electron microscope (OM and SEM) and X-ray diffraction (XRD) ...
Tópico(s): Clay minerals and soil interactions
2010 - Elsevier BV | Applied Clay Science
The Pa-fraction and the Th-fraction of UX were separated using an IMAC C 240 ion-exchange column. Carrier-free UZ sources could be prepared contaminated with only 0.8% of the radiations of UX1 and UX2. The half-life of UX2 was estimated to be 1.175 ± 0.003 minutes.
Tópico(s): Radiation Detection and Scintillator Technologies
1951 - Elsevier BV | Physica
Alexander Kharlamov, Jin‐Yang Joo, Tolga Uz, Hari Manev,
A reproducible brain lesion can be triggered in rats by treating them systematically with rose bengal and irradiating their skulls with light. This procedure is often referred to as the photothrombotic model of stroke/ injury. Recently we reported that in this model some cells show signs of apoptosis, programmed cell death. Apoptosis can be attenuated by inhibitors of macromolecular synthesis. In the work described here, we tested the hypothesis that the protein synthesis inhibitor cycloheximide ...
Tópico(s): Eicosanoids and Hypertension Pharmacology
1997 - Taylor & Francis | Neurological Research
M. Khaleeq-ur-Rahman, K.A. Bhatti, Muhammad Shahid Rafique, A. Latif, Sultana fou-uz-Zia,
Tópico(s): Magnetic properties of thin films
2012 - Elsevier BV | Optics & Laser Technology
We address the key issues of temporal data modeling and temporal integrity constraints in the temporal extensions to the relational data model in attribute and tuple time stamping. These issues include representation of temporal data, temporal grouping identifiers, primary keys of temporal relations and other forms of temporal integrity constraints. We extend the traditional integrity constraints to the temporal domain. In tackling subtle issues temporality creates, we conceptualize that a temporal ...
Tópico(s): Data Management and Algorithms
2004 - Springer Science+Business Media | Lecture notes in computer science
İskender Işık, Veli Uz, George S. Austin, C. Eren Işık,
In this study, the characterization of nodular sepiolites (“right” and “sandy” meerschaum) from Eskisehir (Turkey) Province was studied in order to determine the cause of cracking in “sandy” meerschaum products. Significant differences between the two types of meerschaum were only observable with SEM and BET analyses. Thus, it was concluded that the microstructure of “sandy” meerschaum was the main factor for its cracking.
Tópico(s): Mineralogy and Gemology Studies
2010 - Elsevier BV | Applied Clay Science
Shahood uz Zaman, Xuyuan Tao, Cédric Cochrane, Vladan Končar,
E-textiles reveal a new and hybrid sector of the industry that is created by the integration of electronic components or textile-based electronics in our daily life textile products. They are facing problems in terms of washability, reliability, and user acceptance. This manuscript explains the mechanical stresses acting during the washing process and their impact on e-textile systems. Different washing programs were investigated in terms of total process duration. This washing process duration ...
Tópico(s): Color Science and Applications
2021 - Multidisciplinary Digital Publishing Institute | Sensors
Silvia de la Uz, José Francisco Carrasco, Carmen Rodrı́guez, Jacobo López,
Pilot experiments are required and helpful to identify optimal release strategies in restocking and stock enhancement programs. The selection of a suitable habitat has been identified as an important factor determining sea urchin recruitment success. Substrate complexity and adult abundance offer physical refuges and reduce mortality of juvenile sea urchins. The present study evaluated the effect of substrate shelters on the survival of Paracentrotus lividus juveniles released in the field. Previously, ...
Tópico(s): Coastal and Marine Management
2018 - Elsevier BV | Regional Studies in Marine Science
Abstract Es wird eine Vorschrift zur Abtrennung des, β‐aktiven Pa‐Isotops UZ vom Th‐Isotop UX angegeben, nach welcher das UZ mit nur 1 mg Tantal als Trägersubstanz erhalten wird.
Tópico(s): Nuclear Materials and Properties
1945 - Wiley | Helvetica Chimica Acta
Abdullah Uz Tansel, Canan Eren Atay,
We introduce a nested bitemporal relational data model that allows arbitrary levels of nesting. Bitemporal data is attached to attributes. The fundamental construct for representing temporal data is a bitemporal atom that consists of three parts: transaction time, valid time and a value. We have defined algebra for the nested bitemporal relational model. The algebra includes operations to manipulate bitemporal data, to restructure nested bitemporal relations and to rollback database to a designated ...
Tópico(s): Semantic Web and Ontologies
2006 - Springer Science+Business Media | Lecture notes in computer science
S. Pasynkiewicz, T. D łk uż niewski, Georg Sonnek,
The reactions of 1,1-bis(diisobutylaluminium)hexane (1) with diethylamine, N-methylaniline, methanol and m-cresol have been studied. During partial protolysis both the aluminiumi-butyl bond and the aluminiumcarbon bond in the aluminiumcarbonaluminium bridge undergo cleavage. The route of protolysis mainly depends on the protolytic agent used. The reaction of (1) with acetone has also been studied. Acetone was reduced to i-butanol with a 95% yield. The ratio of the i-butyl to hexylidene groups ...
Tópico(s): Synthesis and characterization of novel inorganic/organometallic compounds
1987 - Elsevier BV | Journal of Organometallic Chemistry
Garima Tripathi, Khalid Badi-Uz-Zama, Gurunath Ramanathan,
Tópico(s): Supramolecular Self-Assembly in Materials
2016 - Elsevier BV | Chemical Physics Letters
Abdulraheem Okehi Anumah, Hitler Louis, Saud Uz Zafar, Adejoke T. Hamzat, Oluwatobi O. Amusan, Amos I. Pigweh, Ozioma Udochukwu Akakuru, Aderemi Timothy Adeleye, Thomas O. Magu,
The pursuit of rapid development in the area of catalysis, solar energy, environmental remediation, wastewater treatment and other aspects of ecological and sustainable chemistry has prompted substantial research by material chemists, physicists, academics and other scientists for the development of porous material. A lot of energy had been invested in this course by scientist, research organizations and public sector agencies from antiquity, but the resulting solution has been somewhat undesirable ...
Tópico(s): Nanomaterials for catalytic reactions
2019 - | Chemical Methodologies
Silvia de la Uz, José Francisco Carrasco, Carmen Rodrı́guez,
Reproductive cycle of the sea urchin Paracentrotus lividus was investigated from an intertidal population of Asturias, northern Spain. Sea urchins were collected monthly from March 2006 to August 2008, and during spring 2009 (March–June). In order to assess the influence of environmental factors on temporal pattern of sea urchin reproduction, photoperiod, sea temperature and phytoplankton abundance were monitored. Gonad index and histological examination of the gonads revealed a well-defined annual ...
Tópico(s): Ocean Acidification Effects and Responses
2018 - Elsevier BV | Regional Studies in Marine Science
Fakhr uz Zaman, Bing Xie, Jinyang Zhang, Tianyu Gong, Kai Cui, Linrui Hou, Jiali Xu, Zhirou Zhai, Changzhou Yuan,
It is still a challenge for wastewater treatment to develop efficient yet low-cost photocatalysts on a large scale. Herein, a facile yet efficient method was devised to successfully synthesize ZnO/Fe2O3 nanoflowers (NFs) by using metal organic framework ZIF-8 as the precursor. The photocatalytic activities of the as-prepared hetero-ZnO/Fe2O3 NFs are purposefully evaluated by photocatalytic degradation of methylene blue (MB) and methyl orange (MO) under UV light irradiation. The resulting ZnO/Fe2O3 ...
Tópico(s): Covalent Organic Framework Applications
2021 - Multidisciplinary Digital Publishing Institute | Nanomaterials
H. J. V. Tyrrell, J. G. Firth, Md. Wahad Uz Zaman,
H. J. V. Tyrrell, J. G. Firth and M. Zaman, J. Chem. Soc., 1965, 3613 DOI: 10.1039/JR9650003613
Tópico(s): Adsorption, diffusion, and thermodynamic properties of materials
1965 - Chemical Society | Journal of the Chemical Society (Resumed)
Shagufta Zulfiqar, M. Zafar‐uz‐Zaman, Arshad Munir, I.C. McNeill,
The thermal degradation behaviour of poly-N-methyl-N-tertbutyl-aminoethyl methacrylate (PMTBAEM) has been studied using thermogravimetry, differential thermal analysis and thermal volatilisation analysis, with programmed heating at 10 °C/min. Subambient TVA was used to separate the volatile degradation products, which were characterised by mass spectrometry and IR spectroscopy. The main volatile products were found to be isobutene and carbon dioxide. The less volatile liquid components of this product ...
Tópico(s): Advanced Polymer Synthesis and Characterization
1997 - Elsevier BV | Polymer Degradation and Stability
Peter Lange, H. Schneider, J. W. L. De Villiers,
Tópico(s): Neutrino Physics Research
1959 - Italian Physical Society | Il Nuovo Cimento
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation F. S. Crawford; A response to A. Horzela, E. Kapúscik, and C. A. Uzes’ ‘‘Comment on ‘Magnetic monopoles, Galilean invariance and Maxwell’s equations’ ’’. Am. J. Phys. 1 May 1993; 61 (5): 472. https://doi.org/10.1119/1.17246 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends ...
Tópico(s): Geomagnetism and Paleomagnetism Studies
1993 - American Institute of Physics | American Journal of Physics
Muhammad Yousaf, Muhammad Pervaiz, Ameer Fawad Zahoor, Abdullah Ijaz Hussain, Muhammad Kaleem Khosa, Sadia Ashraf, Muhammad Sagir, Ashar-uz-Zaman, Khurram Shehzad,
The bis-{µ-2,2′- [ethane-1,3-diyl-bis(nitrilomethylidyne)]diphenolato}dicopper (II) with the molecular formula [Cu2(C16H14N2O2)2] shows the dimeric complex.Distorted square pyramidal geometry is formed in the community of CuII distinct by the two nitrogen atoms and two oxygen atoms of the [N,N´-bis-(salicylidene)-1,2-ethylene-diamine] (ligand) and one oxygen atom commencing both ligand performing as bridge between two ligand molecules, which are wraped in parallel path among each other.In toluene the ...
Tópico(s): Thermal and Kinetic Analysis
2013 - ASIAN PUBLICATION CORPORATION | Asian Journal of Chemistry
M.S. Uddin, Ingo Spahn, Syed Mohammad Hossain, Md. Rumman-uz-Zaman, M. Rakib-uz-Zaman, S.M. Qaim,
Abstract Integral cross sections of the reactions 46 Ti( n , p ) 46 Sc, 47 Ti( n , p ) 47 Sc, 48 Ti( n , p ) 48 Sc, 60 Ni( n , p ) 60 Co and 64 Zn( n , p ) 64 Cu were measured with fast neutrons ( E n > 1.5MeV) from an Am/Be source. The results were compared with data calculated using the neutron spectral distribution and the excitation function of each reaction given in the data libraries ENDF/B-VII.0, IRDF-2002, JEFF-3.2 and JENDL-4.0. In general, the integral measurement and the integrated value agreed within ±4%, except ...
Tópico(s): Nuclear Materials and Properties
2014 - R. Oldenbourg Verlag | Radiochimica Acta
Fahri Esenli, Bektaş Uz, Fikret Suner, Vildan Esenli, Ö. Işık Ece, Işık Kumbasar,
A 33 metre thick pyroclastic-rich zone of the Mezardere formationof Oligocene age is exposed in the Keşan region of Thrace, Turkey.In this zone, vitreous tuffs of dacitic composition have altered primarilyto zeolites, including mordenite, heulandite–clinoptilolite andanalcime. Silicification and alteration to clay minerals are common.Zeolite minerals have developed from volcanic glass, whereas somemordenites have formed from dissolution of heulandite-group zeolites.Although authigenic mineral paragenesis ...
Tópico(s): Geochemistry and Geologic Mapping
2005 - Institute of Geology Zagreb | Geologia Croatica
This paper is concerned with the frictional contact between beams. The purpose is to compare the results obtained by the penalty and Lagrange multiplier methods. The advantages and disadvantages of both methods are generally known and widely discussed but not in the quantitative manner and not specifically for the problem of beam-to-beam contact. The paper sketches briefly both formulations pointing out the main differences and features of both methods. The section with examples presents several ...
Tópico(s): Adhesion, Friction, and Surface Interactions
2005 - De Gruyter Open | Civil And Environmental Engineering Reports
Nabeela Shaheen, Shahiq uz Zaman,
Flurbiprofen belongs to Biopharmaceutical Classification System (BCS) class II drugs which are poorly soluble in water. The objective of present research work was to prepare fast dissolving tablets of Flurbiprofen using varying concentrations of three different sublimating agents to improve the dissolution rate. Seven formulations were prepared containing different concentrations of camphor, ammonium bicarbonate and thymol as sublimating agent along with primogel as a superdisintegrant. Tablets were ...
Tópico(s): Advanced Drug Delivery Systems
2018 - UNIVERSIDADE DE SÃO PAULO | Brazilian Journal of Pharmaceutical Sciences
A Wiener system, i.e. a cascade system consisting of a linear dynamic subsystem and a nonlinear memoryless subsystem is identified. The a priori information is nonparametric, i.e. neither the functional form of the nonlinear characteristic nor the order of the dynamic part are known. Both the input signal and the disturbance are Gaussian white random processes.
Tópico(s): Fault Detection and Control Systems
2001 - De Gruyter Open | International Journal of Applied Mathematics and Computer Science
In this study, the use of sepiolite, formed as fibers in nature, in the production of fiber‐diopside crystals and its effect on crystallization were researched. Sintering process was performed for both pellet and powdered samples. Grain–grain interactions in pellets were effective in diopside crystallization during sintering. It was determined that poor grain–grain interactions and grains with pores formed local glassy phase and crystallization. Dendritic structure was largely formed than eutectic ...
Tópico(s): Building materials and conservation
2014 - Wiley | International Journal of Applied Ceramic Technology