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Search results for: pectin gel
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Stability of an Innovative Cold-Formed GEB Section
PublicationThis paper is focused on the numerical analysis and experimental test of stability of the cold-formed profile with an innovative GEB cross-section. For the shell model of the axially compressed member, the linear buckling analysis and the nonlinear static analysis were carried out. In the numerical research, the buckling load and the limit load for variable section heights were obtained. Some of the results were compared with the...
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Determination of changes in viscosity of pectin gel depending on shear rate (1.1 to 55 s-1).
Open Research DataThe rheological characteristic of pectin gel (with concetration 0,45% m/m, in three independent repetition of sample) was made on the basis of a viscosity measurement using a Brookfield viscometer, using LV SC4 - 25 spindle and shear rates from 1.1 to 55 s-1.The data allowed to characterize the used hydrogel preparations and assess their functional...
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Determination of changes in viscosity of pectin gel depending on shear rate (1.7 to 85 s-1).
Open Research DataThe rheological characteristic of pectin gel (with concetration 0,25% m/m, in two independent repetitions) wasmade on the basis of a viscosity measurement using a Brookfield viscometer, using LV SC4 - 27 spindle and shear rates from 1.7 to 85 s-1, in temperature of 25 C degee .The data allowed to characterize the used hydrogel preparations and assess...
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Innovative cold-formed GEB section under compression
PublicationCold-formed steel sections extensively affect the modern steel construction industry. Not only are they used as secondary elements like purlins or sheeting, but also they can serve as primary load-bearing members in fabricated steel panels and trusses. A new cross-section called shortly a GEB may serve as that member. However, its existence of the metal building structures industry depends on the exact, optimal dimensional parameters...
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Innovative Cold-formed GEB Section under Bending
PublicationThis paper is concerned with the numerical bending capacity study of the innovative cold-formed GEB sections. Both linear buckling analysis and non-linear static analysis incorporating geometric and material nonlinearity were carried out employing a shell structural model. The magnitudes of buckling load and limit load with respect to GEB section depth and thickness were obtained. The opened cold-formed section was tested assuming...
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Determining optimal gel sensitivity in optical CT scanning of gel dosimeters
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Carbon–silica gel adsorbents
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Experimental Testing of Innovative Cold-Formed "GEB" Section / Badania Eksperymentalne Innowacyjnego Kształtownika Giętego Na Zimno Typu „Geb“
PublicationOne of the major advantages of light gauge steel structures made of cold-formed steel sections is their low weight, so manufacturers are increasingly using the possibilities of those sections for the production of typical single-storey steel structures systems. Well known profiles, such as Z, C and the so called hat sections that have been studied and described in the literature, are used mainly as purlins or truss components....
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Radiation dose distributions in three dimensions from tomographic optical density scanning of polymer gels: II. Optical properties of the BANG polymer gel
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Apple pectin complexes with whey protein isolate
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Utilization of a sol–gel method for encapsulation of doxorubicin
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New procedure of silica gel surface modification
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The photoconductivity of sol-gel derived TiO2 films.
PublicationPrzygotowano metodą zol-żel warstwy TiO2 na podłożu kwarcowym. Zbadano ich fotoprzewodnictwo w różnych warunkach. Stwierdzono, że fotoprąd w próżni jest o trzy rzędy większy niż w powietrzu. Jako wyjaśnienie zaproponowano absorpcję tlenu na powierzchni warstwy.
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ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE
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Sol-gel technique - a versatile tool for adsorbent preparation
PublicationPrzygotowanie próbek do analizy, w tym przede wszystkim izolacja i/lub wzbogacanie analitów stanowi kluczowy element każdej procedury analitycznej z zakresu oznaczania składników śladowych. Wyzwania analityczna są związane zarówno z właściwościami fizykochemicznymi samych analitów jak i składników matrycy oraz stosowanych sorbentów. Choć gama znanych sorbentów i faz stacjonarnych, które można wykorzystać w praktyce analitycznej...
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Enantioselective Gel Phase Synthesis of Metal–Organic Materials
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Emulsion-Based Gel Loaded with Ibuprofen and Its Derivatives
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The Influence of Limiters UEL and OEL (The power angle, stator's current and excitation current) ot the possibility of voltage collapse development
PublicationVoltage stability has been a major concern for power system utilities because of event of voltage collapses in the recent past. Sometimes, power system events have shown the need for generators to operate in the overexcited and underexcited region to support stable operation. Modern excitation systems include devices for controlling or limiting machine terminal voltage (overvoltage limiters), volts per hertz ratio (V/Hz limiters),...
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Dosimetric evaluation of a novel polymer gel dosimeter for proton therapy
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The Effect of Adhesive Additives on Silica Gel Water Sorption Properties
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Studies of the separation performance of silanized silica gel for simulated distillation
PublicationWe present the results of investigations of the chromatographic (sorptive) properties of silanized silica gel as a stationary phase for gas chromatography used for simulated distillation. Commercially available silanized sorbent (particle diameter range 63–200 m, average pore size 60 Å) was sieved to obtain the 80–100 mesh fraction (180–150 m). The obtained results revealed that silanized silica gel allows the complete separation...
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Determination of the active ingredient in pharmaceutical gel formulation by NIR spectroscopy
PublicationPharmaceuticals of their intended must be thoroughly controlled. The traditional analytical methods are very costly and time consuming. NIR spectroscopy allows to analyze pharmaceutical materials very quickly and with very low costs. First pharmaceutical applications of the NIR spectroscopy appeared with some incuriosity in the late 1960s. Application of NIR in the contemporary pharmaceutical industry is very large. The most common...
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Raman investigation of sol-gel-derived hybrid polymers for optoelectronics
PublicationPrzedstawiono wykorzystanie spektroskopii ramanowskiej do kompleksowej diagnostyki polimerów hybrydowych stosowanych w optoelektronice. Zbadano efektywność kolejnych etapów procesu technologicznego: od monomerów do etapu produktu finalnego - cienkich warstw.
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Raman Spectroscopy for Investigation of Sol-Gel Materials and Ceramic Materials.
PublicationPrzedstawiono rezultaty prac nad zastosowanie spektroskopii ramanowskiej do badania polimerów hybrydowych wytwarzanych metodą zol-żel oraz ceramik ferroelektrycznych. Wykonano pomiary dla próbek objętościowych i struktur cienkowarstwowych. Zademonstrowano możliwośc monitorowania procesu syntezy w czasie rzeczywistym.
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Preparation and structure of nanocrystalline sol-gel derived lithium titanate powder
Publicationw pracy szczegółowo opisano nowatorską metodę wytwarzania nanokrystalicznych proszków tytanianu litu. przedstawiono wyniki badań wykonanych próbek.
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Superconducting properties of NbN-SiO2 sol-gel derived thin films
PublicationPraca przedstawia wyniki badań właściwości nadprzewodzących cienkich warstw xNbN-(100-x)SiO2, gdzie x = 80 mol%, o różnych grubościach (od 450 do 1950 nm. Badania przeprowadzono w oparciu o pomiary przewodnictwa elektrycznego w polu i bez pola magnetycznego. Właściwości nadprzewodzące warstw zależą od ich grubości. Przejście nadprzewodzące warstw jest szerokie, co związane jest z aktywowanym termicznie pełzaniem strumienia pola...
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Degradation of Gel-Coat Layer in Glass/Polyester Laminate in Seawater Environment
PublicationGlass/polyester laminate coated with gelcoat layer of different thickness 0,5; 1,5; 3 mm was studied in terms of blistering behaviour and water sorption in hot water environment. Blistering was found to be accelerated for thin (0,5 mm) gel-coat layer compared to the thick (1,5; 3 mm), however no significant difference in blistering behaviour was observed between the laminates with gel-coat thickness 1,5 and 3 mm which may suggest...
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Characterization of Modified Silica Gel as a Source of Ethene for Standard Gaseous Mixtures
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Initial evaluation of commercial optical CT‐based 3D gel dosimeter
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Image registration of BANG® gel dose maps for quantitative dosimetry verification
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Two-dimensional gel-based serum protein profile of growing piglets
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Luminescence kinetics in silica gel doped with Tb3+ ions and ZnS:Mn2+ nanocrystals
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Degradation of Gel-Coat Layer in Glass/Polyester Laminate in Seawater Environment
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The influence of thermal conditions on V2O5 nanostructures prepared by sol-gel method
PublicationThis work presents the result of structure investigations ofV 2O5 nanorods grown from thin films and powders prepared by sol-gel method. To examine the best temperature of nanorods crystallization, thin films deposited by spin-coating method on quartz glass or silicon substrates and bulk xerogel powders were annealed at various temperatures ranging from 100∘C to 600∘C. The structure of the samples was characterized by X-ray diffraction...
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Preliminary Studies on a Lightweight Porous Cement-Based Composite – Gel Concrete
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Structure of sol-gel derived Nb2O5 films for active coating devices
PublicationW artykule przedstawiono wyniki badań struktury cienkich warstw nb2o5 otrzymywanych metodą zol-żel. wytworzone warstwy charakteryzowano pod kątem zastosowania jako materiałów na aktywne pokrycia fotoniczne.
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Transport Properties of Nitrided VN-SiO2 Sol-Gel derived films
PublicationPraca dotyczy transportu elektrycznego stałoprądowego cienkich warstw xVN-(100-x)SiO2 (gdzie x = 90, 80, 70, 60 mol%)otrzymanych w wyniku termicznego azotowania warstw tlenkowych otrzymanych metodą zol-żel. W warstwach obserwuje się granule VN rozdyspergowane w amorficznej matrycy SiO2. Warstwy wykazują przejście nadprzewodzące w temperaturze około 7,5K. W stanie normalnym ich przewodnictwo można opisać modelem charaktrystycznym...
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XAFS investigations of nitrided NbN-SiO2 sol-gel derived films
PublicationPraca poświęcona jest wykorzystaniu analizy widm XAFS zmierzonych na krawędzi K atomów Nb do badania struktury cienkich warstw NbN-(100-x)SiO2 (x = 100, 80, 60 mol%) otrzymanych techniką zol-żel poprzez wysokotemperaturowe wygrzewanie warstw Nb2O5-SiO2 w atmosferze NH3. Otrzymana struktura filmu jest złożona z granul NbN ulokowanych w matrycy SiO2. Analiza XAFS pokazuje, że we wszystkich próbkach w lokalnym otoczeniu niobu znajduje...
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Investigation of energy deposition and its optical imaging in polymer gel dosimeters
PublicationThis following chapter describes methods for verifying the absorbed dose during radiotherapy. Special attention is paid to the method using polymer-gel dosimeters, the dose reading of which is performed by means of Laser Computed Tomography. The chapter also includes considerations on alternative solutions for dosimetric measurements and various types of radiotherapy and their pros and cons. In addition, both the methods of structural...
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Structure and electrical properties of nitrided NbN-TiN sol-gel derived films
PublicationW pracy przedstawiono rezultaty badań struktury oraz właściwości elektrycznych warstw NbN-TiN (o różnym stosunku molowym NbN/TiN)otrzymanych w wyniku termicznego azotowania warstw tlenkowych otrzymanych metodą zol-żel. Badania struktury przeprowadzono metodami AFM, XRD oraz XPS. Wynika z nich, iż głównymi fazami w wartstwach są NbN i TiN o rozmiarach ziaren około 100 nm. Jednakże zaobserwowano również istnienie niewielkiej ilości...
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Structural and optical investigations of sol-gel derived lithium titanate thin films
Publicationin this paper structural and optical studies of lithium titanate (lto) thin films are presented. nanocrystalline thin films with 800 nm thickness were prepared by sol-gel method. to examine the influence of the annealing time on as-prepared films crystallization, the coatings were heated at 550 °c for 10, 20 and 80 h. structure of manufactured thin films was investigated using x-ray diffraction (xrd). the most visible lithium titanate...
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Superconducting properties of vn-sio 2 sol-gel derived thin films
Publicationin this work studies of structure and superconducting properties of vnsio2 films are reported. the films were obtained through thermal nitridation (ammonolysis) of solgel derived v2o3sio2 coatings (in a proper v2o3/sio2 ratio) at 1200 ◦c. this process leads to the formation of disordered structure with vn metallic grains dispersed in the insulating sio2 matrix. the structural transformations occurring in the lms as a result...
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On electrical and photoconductive properties of mixed Nb2O5/TiO2 sol-gel thin films
PublicationPraca prezentuje wyniki przewodnictwa elektrycznego i fotoprzewodnictwa cienkich warstw TiO2 i Nb2O5/TiO2 otrzymanych metodą zol-żel. Pomiary przeprowadzono w funkcji temperatury i natężenia oświetlenia zarówno w próżni jak i w powietrzu. Struktura warstw została zbadana metodami XRD oraz AFM. W pracy zaobserwowano zaobserwowano spadek fotoprzewodnictwa wraz z zawartością Nb2O5
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Structural investigations of nitrided Nb2O5 and Nb2O5-SiO2 sol-gel derived films
PublicationPraca zawiera badania struktury azotowanych warstw Nb2O5-SiO2 (o różnym stosunku molowym Nb2O5/SiO2)otrzymanych metodą zol-żel. Azotowanie przeprowadzono w różnych temperaturach z zakresu 800-1200C. W wyniku azotowania w warstwach powstają metaliczne granule NbN w amorficznej matrycy SiO2. Przemiany strukturalne zachodzące podczas azotowania badano metodą dyfrakcjii rentgenowskiej (XRD), rentgenowską spektroskopią fotoelektronów...
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Synthesis of sol-gel mesoporous silica materials providing a slow release of doxorubicin
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Synthesis and characterization of modified silica gel as an intermediate in the generation of gaseous standard mixtures
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Spectroscopic studies of sol-gel derived thin film structures for integrated optics
PublicationPrzedstawiono wyniki badania struktur cienkowarstwowych wykonywanych dla zastosowań w optyce zintegrowanej z polimerów hybrydowych (np. w postaci ścieżek śwaitłowodów planarnych). Jakość i jednorodność stuktur badano za pomocą mikroskopii ramanowskiej, mikroskopii optycznej i profilometrii światła białego. Wykonano porównanie wyników uzyskanych tymi trzema metodami.
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Magnetic resonance imaging of radiation dose distributions using a polymer-gel dosimeter
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SU‐GG‐T‐290: A Fast Optical CT Scanner for Gel Dosimetry
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Gel-based separation of single-walled carbon nanotubes for metallic and semiconducting fractions
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