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Showing 1 to 20 of 29 for “"paraffin wax"”.
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Immunophenotypic classification of canine malignant lymphoma in formalin-fixed, paraffin wax-embedded specimens using CD3 and CD79a cell markers
Inconsistent use of nomenclature in different canine malignant lymphoma (CML)classification systems, which lead to incorrect diagnosis and prognosis, necessitated a retrospective study of 103 cases of CML. Histological classification was done according to the Working Formulation, on H&E sections, …
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Human Papillomavirus DNA extraction and genotype analysis by multiplex real time polymerase chain reaction from formalin fixed paraffin wax-embedded cervical carcinoma specimens
Introduction: Cervical squamous cell carcinoma is most commonly caused by persistent infection by high risk human papillomavirus (hrHPV) genotypes. The exact type of hrHPV varies geographically and is the basis for HPV–based vaccination for cervical squamous cell carcinoma prevention. Little is …
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Thermal performance of backflow solar air heating with integrated nanoparticle enhanced pcm absorber storage system
… thermal storage, with thermal storage using paraffin wax as a PCM and with thermal storage using Al2O3-paraffin wax. A three-dimensional Navier-Stokes equation coupled with the energy balance equation is solved using the computational fluid dynamics (CFD) software program to implement …
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Radiation shielding calculations by means of MCNPX
… of homogeneous materials such as iron, paraffin wax containing boron carbide for the attenuation of neutrons, and lastly, lead as an outer photon shield layer. The thickness of lead necessary to attenuate photons transmitted from the neutron capture reactions and those from the decay of …
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A structural and thermodynamic study of non-aqueous solvent/wax systems
Non-aqueous wax/solvent systems of industrial relevance for the manufacture of paste polishes have been investigated. These mixtures have been modelled using a paraffin wax of Japanese origin (Nippon Seiro 140/145°F) in a solution of pure heptane to which dopant components are added.The stability …
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Design and Simulation of Passive Thermal Management System for Lithium-Ion Battery Packs on an Unmanned Ground Vehicle
… matrix infiltrated with a phase-changing paraffin wax. The redesigned battery pack was similarly modeled, showing a decrease in the maximum temperature to 50.3 <strong>°</strong>C after 630 seconds at the same power draw. The proposed passive thermal management system kept the batteries …
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Scratch tests : a new way of evaluating the fracture toughness of materials
… set-up of controlled laboratory tests on paraffin wax allows us to identify fracture processes as predominant. An analytical model for scratch tests with a rectangular blade and a back-rake angle is then developed. This model applies to linear elastic isotropic brittle materials and links …
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Impact and melting dynamics of micron-sized particles on a liquid pool
… in which impact and subsequent melting of paraffin wax particles (melting point: ≈60°C, diameter: 200-800 μm, impact velocity: 0.3-1.9 m/s) onto a pool of liquid paraffin with temperatures 100-130<sup>o</sup>C was investigated. The micron-sized paraffin particles were created using a bulk …
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Nonelectric, standalone heating element for an infant incubator
… Anya requires a nonelectric heating method. Paraffin wax, a phase change material with high latent heat storage, was selected as the heating element for study. The wax can be melted in boiling water, used to deliver heat to the incubator, then melted again once the material has solidified. A …
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Phase separation spinning of porous polypropylene hollow fibers
… systems were studied: polypropylene-paraffin wax, and polypropylene-naphthalene. A tube-in-orifice spinneret design was used. All attempts to spin hollow fibers using the polypropyleneparaffin wax system failed. Initial attempts to produce hollow fibers from polypropylene-naphthalene …
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An experimental study of OH uptake by surfaces of tropospheric importance under dry and wet conditions
… OH exposure of hydrophobic organic surfaces (paraffin wax, pyrene, and methane soot) did not result in measurable change in their relative hydrophilic properties, the presence of water vapor enhanced the OH reactivity on a hydrophilic organic surface (glutaric acid). The RH effect on OH uptake …
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Performance optimization of low-to-moderate temperature thermal systems: a multi-pronged investigation
… work, with a maximum deviation of 7.2%. Then, paraffin wax based phase change material (PCM) is incorporated into the collector tube. With the CPC-involute reflector, the paraffin wax PCM was able to achieve 100% melting, whereas conventional system without reflector only reached a maximum of …
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Molten Salt Nanomaterials for Thermal Energy Storage and Concentrated Solar Power Applications
… materials (such as synthetic oil, fatty acid, or paraffin wax) are typically used for TES. This limits the operating temperature of CSP units to below 400 degrees C. Increasing the operating temperature to 560 degrees C (i.e., the creeping temperature of stainless steel), can enhance the …
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Development of Lattice-Augmented Fuels for Hybrid Rocket Applications
… introduction of liquefying solid fuels, such as paraffin wax, have helped overcome some of the scaling issues traditionally associated with hybrid rockets, but a number of key challenges relating to combustion efficiency and the structural properties of wax-based fuels remain. The current work …
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Electrical treatment of waxy model oil to improve its cold mobility
Wax precipitation at low temperatures can pose significant flow assurance challenges during offshore transportation of waxy crude oils. The sharp increase of viscosity due to wax precipitation increases the pressure drop and thus raises the capital and operating cost of transportation. Conventional …
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Improved stabilization of 2-acetyl-1-pyrroline zinc chloride complex using spray chilling encapsulation and its practical application in foods
… spray-chilling encapsulation process using paraffin wax (octacosane) was achieved. The physical properties of the microcapsules were measured by scanning electron microscopy (SEM) and X-ray micro-computed tomography (CT). The microcapsules were shown to have matrix type structure and possess …
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New applications of heteroarylzinc nucleophiles
… reactions. The reagent can also be stored in paraffin wax capsules for significant added stability. Chapter 2. Synthesis of Heteroaryl Sulfonamides from Organozinc Reagents and 2,4,6- Trichlorophenyl Chlorosulfate. A method for the preparation of aryl and heteroaryl sulfonamides using …
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Investigations into the use of continuous low-level medication for the control of helminths in the ruminant
… (based on fatty acids, palmitic acid and paraffin wax) when the boluses were dosed singly or in pairs. The development of a stable "carrier" on which to load a suitable matrix is also described, the majority of the experiments undertaken utilising this "carrier". The effect on the drug …
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Novel Gel-Infused Additively Manufactured Hybrid Rocket Solid Fuels
… micro aluminum, nano aluminum) and polymeric (paraffin wax) gellants. The particle structure of the aluminum powders was characterized by means of microscopic imaging, particle size measurement, and thermal mass response analysis. The rheological behavior of the gels was characterized in order …
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The Varied Thermal Response of Magnetic Iron-Oxide Nanoparticles During Induction Heating in Liquid and Solid-Liquid Phase Change Mediums
… Nanoparticles embedded in a solid PCMs of Paraffin wax and D-Sorbitol were investigated to reasonably characterize the SAR output of Néel relaxation dominated heating. The SAR results of the two PCM mediums correspond well at each concentration and field frequency demonstrating the Néel …
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