The theoretical basis of surface engineering for improvement of biocontact properties of polymeric biomaterials as well as the current state-of-the-art of the surface engineering of polymeric biomaterials are presented. The book also includes information on the most used conventional and advanced surface engineering methods.
The theoretical basis of surface engineering for improvement of biocontact properties of polymeric biomaterials as well as the current state-of-the-art of the surface engineering of polymeric biomaterials are presented. The book also includes information on the most used conventional and advanced surface engineering methods.
2M-S3, IKI, Oct C. dUston : Laser methods for planetary surface composition 3 In situ surface analysis goals To explore the planetary environments To gain knowledge of the geological history -To provide identification and characterisation of minerals and biomarkers. -general mineralogical information for igneous, metamorphous, and sedimentary processes, especially water-related geo-processes. To investigate the relationship between water and climate change. To identify organic compounds and search for life
0083] 10 relief plate [0084] 20 top surface [0085] 40 relief print [0086] 50 printed dot [0087] 60 relief plate [0088] 70 top surface [0089] 80 relief print [0090] 90 printed dot [0091] 100 relief plate [0092] 110 top surface [0093] 112 hole [0094] 120 relief print [0095] 130 printed ink [0096] 132 printed hole [0097] 210 relief plate with surface pattern [0098] 220 top patterned surface [0099] 240 relief print [0100] 250 printed dot [0101] 260 relief plate with surface pattern [0102] 270 top patterned surface [0103] 280 relief print [0104] 290 printed dot [0105] 300 relief plate with surface pattern [0106] 310 top patterned surface [0107] 312 hole [0108] 320 relief print [0109] 332 hole [0110] 330 printed ink [0111] 400 relief plate with surface pattern [0112] 410 top patterned surface [0113] 420 bottom of surface pattern [0114] 430 relief plate [0115] 440a halftone dots with second surface pattern [0116] 440b halftone dots with second surface pattern [0117] 440c halftone dots with second ...
BACKGROUND: We present the synthesis, characterization and initial structure-function analysis of a new class of bioactive agent that allows the application of techniques from colloid science to biological surfaces. Stable colloidal suspensions can be generated by immobilizing a dense brush of soluble polymer at the colloidal surface, creating a zone protected against the adhesion of approaching particles, a phenomenon termed polymeric steric stabilization. This is often accomplished for aqueous colloidal dispersions using adsorbing block copolymers. We demonstrate that water-soluble block copolymers can be designed to adsorb onto heterogeneous biological surfaces and block cell-cell and cell-surface adhesion, using polymer compositions and architectures that are quite different from surfactants used for stabilizing nonbiological colloidal dispersions. RESULTS: Comb copolymers were synthesized having polycationic backbones (poly-L-lysine, PLL), serving as the anchor for binding to the net ...
TY - CHAP. T1 - Laser Surface Engineering of Polymeric Materials for Enhanced Mesenchymal Stem Cell Adhesion and Growth. AU - Waugh, David. AU - Cosgrove, Daniel. AU - Hussain, Issam. AU - Lawrence, Jonathan. PY - 2019/5/3. Y1 - 2019/5/3. N2 - Owing to them being relatively inexpensive and easy to manipulate, polymers are becoming more widely used within the biomedical industry for several different applications. As an example, because of its high wear resistance, low moisture absorption and high chemical resistance, poly(ether ether ketone) is commonly used as a biomaterial in the healthcare and biomedical industries. However, poly(ether ether ketone) surface properties are not optimum for efficient or enhanced bio-functionality, leading it to have somewhat inferior wettability and adhesion characteristics. On account of this, many researchers are now looking to employ surface engineering techniques to improve and enhance the surface properties of poly(ether ether ketone), enhancing its ...
Superhydrophobic-superhydrophilic patterned surface is widely investigated due to its combination of fast water nucleation and efficient droplet departure, which are important factors to lower interfacial thermal resistance and then enhancing water harvesting efficiency. Preparation methods used nowadays are photolithography, inkjet printing, sol-gel and so on, which either involves complicated and non-scalable procedures or is not able to prepare well-defined patterns. This work demonstrates a facile surface engineering method to prepare superhydrophilic patterns on superhydrophobic substrate which is grown with closely packed TiO2 nanorods. The pattern size can be well controlled by using different masks under UV shinning. With different UV irradiation time, patterns with microscale and nanoscale sizes are able to prepare. The relationship between pattern size and its water harvesting efficiency is studied. Preliminary result shows that the water collection rate of biphilic patterned surface ...
The surface parts of an image which is stored in the form of a bit-representation in a raster image memory may be filled with a surface pattern using the following steps: generating a bit-representation of the surface pattern defined uniformly over the entire image surface; generating a mask function, which gives a specific logic value to those raster points which are situated within the boundaries of the surface parts; generating a filling pattern by performing a logic operation on the bit-representation of the surface pattern and the mask function; and transferring the filling pattern to the raster image memory.
The Surface Engineering Group carries out research on the use of plasma and other surface treatments to modify the properties of polymers, ceramics and metals. Using plasmas the mechanical, physical and chemical properties of these materials can be modified at the nm and micron level. Coatings can be deposited which can enhance surface properties, for example, to tailor wettability, cell/protein adhesion, tribological properties as well as enhancing the adhesive bond strength. The depositon of functional coatings can also be used to achieve enhanced biocompatibility or to improve anti-bacterial performance. The group has a range of equipment for the deposition of coatings/layers including ...
Ubiquinone and plastoquinone are two of the main electron and proton shuttle molecules in biological systems, and monogalactosyldiacylglycerol (MGDG) is the most abundant lipid in the thylakoid membrane of chloroplasts. Saturated MGDG, ubiquinone-10 (UQ) and MGDG:UQ mixed monolayers at the air/water interface have been studied using surface pressure-area isotherms and Brewster Angle Microscopy. Moreover, the transferred Langmuir-Blodgett films have been observed by Atomic Force Microscopy. The results show that MGDG:UQ mixtures present more fluid phase than pure MGDG, indicating a higher order degree for the later. It is also observed an important influence of UQ on the MGDG matrix before UQ collapse pressure and a low influence after this event, due to UQ expulsion from the MGDG matrix. This expulsion leads to a similar remaining UQ content for all the tested mixtures, indicating a limiting content of this molecule in the MGDG matrix at high surface pressures. The thermodynamic studies confirm ...
Flagellate grazing on bacteria with different surface properties.The present study demonstrated that three common species of freshwater nanoflagellates fed on bacteria having very different physicochemical surface properties at comparable rates. Differences in the electrostatic surface charges of the bacteria did not influence the flagellate feeding rates. Moreover, we found no evidence that less hydrophobic bacteria are less vunerable to ingestion by flagellates. The twofold variation in the feeding rates for each flagellate species was related neither to CSH values measured by the BATH assay nor to the HIC index. Bacterial cell size did not influence the outcome.. Zeta potentials revealed that all of the test bacteria had negative net charges, and the values were within the range of values found for other bacterial isolates (13, 52). Lower ingestion rates for highly negatively charged particles were not observed. To date, this phenomenon has been described only by Hammer et al. (23), who ...
The effect of surface roughness on capillary imbibition. . Biblioteca virtual para leer y descargar libros, documentos, trabajos y tesis universitarias en PDF. Material universiario, documentación y tareas realizadas por universitarios en nuestra biblioteca. Para descargar gratis y para leer online.
TY - JOUR. T1 - Cell-cycle-dependent Changes of the Negative Surface Charges in L929 Cells. AU - Doi, Akitaka. AU - Tokuda, Masaaki. AU - Itano, Toshifumi. AU - Matsui, Hideki. AU - Ohmura, Yoshiaki. AU - Hatase, Osamu. PY - 1984/1/1. Y1 - 1984/1/1. N2 - The negative charges of cell surface were studied by the adsorption method of methylene blue in the synchronized cultures of L929 cells and its spontaneously transformed cell strain.The negative surface charges of the transformed cells were twice those of the original cells through all cell cycle phases.The surface charges cell-cycle-dependently changed in both cell systems and there were two maximum peaks at early Gx and S phase.. AB - The negative charges of cell surface were studied by the adsorption method of methylene blue in the synchronized cultures of L929 cells and its spontaneously transformed cell strain.The negative surface charges of the transformed cells were twice those of the original cells through all cell cycle phases.The ...
TY - JOUR. T1 - Adsorption of BSA on highly carboxylated microspheres - Quantitative effects of surface functional groups and interaction forces. AU - Yoon, Jeong Yeol. AU - Park, Ham Yong. AU - Kim, Jung-Hyun. AU - Kim, Woo Sik. PY - 1996/2/10. Y1 - 1996/2/10. N2 - In order to elucidate the relations between the amount of surface functional groups and interaction forces, BSA adsorption experiments were performed, using highly carboxylated PS/PMAA microspheres as well as conventional ones. Two kinds of interaction forces were considered in this study, hydrogen bonding and hydrophobic interactions, while ionic interactions were assumed to be small or constant. Hydrophobic interactions were dominant in the low Nc (number density of surface carboxyl groups) region, below 1 carboxyl group nm-2, and were relatively sensitive to pH, while hydrogen bonding was dominant in the high Nc region, above 2 carboxyl groups nm-2, irrespective of pH. The transition region between these two interaction forces was ...
Chemical surface treatment machine : Comparison and purchase of Chemical surface treatment machine in the section Production equipment and quote requests online.
1. Introduction/Overview 2. Surface Structure Analysis 2.1. 2D Crystallography & Reciprocal Space 2.2. Real Space (STM, Microscopy) 3. Electron Spectroscopy 3.1. for Surface Chemistry Analysis 3.2. for Electronic Structure 4. Ion Scattering 5. Elementary Processes at Surfaces 5.1. Vibrational Properties & Excitations 5.2. Adsorption/Desorption: Binding and Release from Atoms & Molecules at Surfaces 5.3. Surface Diffusion & Mass Transport: Mobility on a 2D Crystal Lattice 5.4. Surface Chemical Reactions & Heterogeneous Catalysis 5.5. Magnetism at Interfaces/Spintronics/Nanomagnetism/Molecular Magnets 5.6. Interaction with Light/Plasmonics 6. Biological Molecules & Self-Assembly at Surfaces 7. Nanostructures/Thin Film Epitaxy/Self-Organized Growth 8. Atomic/Molecular Manipulation and Quantum Confinement 9. Electron Transport in Nanosized Objects 10. Molecular ...
Surface Modification on Ti-30Ta Alloy for Biomedical Application. . Biblioteca virtual para leer y descargar libros, documentos, trabajos y tesis universitarias en PDF. Material universiario, documentación y tareas realizadas por universitarios en nuestra biblioteca. Para descargar gratis y para leer online.
Purpose: The main purpose of this study was evaluate a polymer-gel-dosimeter (PGD) for three-dimensional verification of dose distributions in the lung that is called lung-equivalent gel (LEG) and then to compare its result with Monte Carlo (MC) method. Materials and Methods: In the present study, to achieve a lung density for PGD, gel is beaten until foam is obtained, and then sodium dodecyl sulfate is added as a surfactant to increase the surface tension of the gel. The foam gel was irradiated with 1 cm × 1 cm field size in the 6 MV photon beams of ONCOR SIEMENS LINAC, along the central axis of the gel. The LEG was then scanned on a 1.5 Tesla magnetic resonance imaging scanner after irradiation using a multiple-spin echo sequence. Least-square fitting the pixel values from 32 consecutive images using a single exponential decay function derived the R2 relaxation rates. Moreover, 6 and 18 MV photon beams of ONCOR SIEMENS LINAC are simulated using MCNPX MC Code. The MC model is used to calculate ...
A new method is provided for the creation of interconnect lines. Fine line interconnects are provided in a first layer of dielectric overlying semiconductor circuits that have been created in or on the surface of a substrate. A layer of passivation is deposited over the layer of dielectric, a thick second layer of dielectric is created over the surface of the layer of passivation. Thick and wide interconnect lines are created in the thick second layer of dielectric. The first layer of dielectric may also be eliminated, creating the wide thick interconnect network on the surface of the layer of passivation that has been deposited over the surface of a substrate.
A new method is provided for the creation of interconnect lines. Fine line interconnects are provided in a first layer of dielectric overlying semiconductor circuits that have been created in or on the surface of a substrate. A layer of passivation is deposited over the layer of dielectric, a thick second layer of dielectric is created over the surface of the layer of passivation. Thick and wide interconnect lines are created in the thick second layer of dielectric. The first layer of dielectric may also be eliminated, creating the wide thick interconnect network on the surface of the layer of passivation that has been deposited over the surface of a substrate.
A new method is provided for the creation of interconnect lines. Fine line interconnects are provided in a first layer of dielectric overlying semiconductor circuits that have been created in or on the surface of a substrate. A layer of passivation is deposited over the layer of dielectric, a thick second layer of dielectric is created over the surface of the layer of passivation. Thick and wide interconnect lines are created in the thick second layer of dielectric. The first layer of dielectric may also be eliminated, creating the wide thick interconnect network on the surface of the layer of passivation that has been deposited over the surface of a substrate.
System and method for coating a medical appliance are provided. In accord with one embodiment, a system for applying a coating to a medical appliance having accessible patterned surfaces is provided. The system may include: a processor, an appliance support, and a solenoid type fluid dispensing head having an electromagnetically controlled valve. In the system, the appliance support may be adapted to hold the medical appliance and to provide direct access for a coating to contact the exposed external patterned surfaces of the medical appliance. The solenoid type fluid dispensing head in this system may move with respect to the medical appliance and may be in communication with a source of coating and with the processor. The processor in this system may contain commands that instruct the solenoid type fluid dispensing head to force coating onto the accessible patterned surfaces of the medical appliance in a pattern that correlates with the accessible patterned surfaces of the medical appliance.
Stock Photo of Orca at surface. High Quality Orca Images and Gloss Prints are available from Oceanwide Images Stock Photo Library.
We demonstrate nanoparticle surface patterning, which utilizes thermodynamically driven segregation of polymer ligands from a uniform polymer brush into surface pinned micelles following a change in solvent quality. Patch formation is reversible but can be permanently preserved using a photocrosslinking step. The methodology offers the ability to control the dimensions of patches, their spatial distribution and the number of patches per nanoparticle, in agreement with a theoretical model. The versatility of the strategy is demonstrated by patterning nanoparticles with different dimensions, shapes and compositions, tethered with various types of polymers and subjected to different external stimuli. These patchy nanocolloids have potential applications in fundamental research, the self-assembly of nanomaterials, diagnostics, sensing and colloidal stabilization.. ...
TY - JOUR. T1 - Biofilm formation affects surface properties of novel bioactive glass-containing composites. AU - Hyun, Hong Keun. AU - Salehi, Satin. AU - Ferracane, Jack. PY - 2015/12/1. Y1 - 2015/12/1. N2 - Objectives This study investigated the effects of bacterial biofilm on the surface properties of novel bioactive glass (BAG)-containing composites of different initial surface roughness. Methods BAG (65 mol% Si; 4% P; 31% Ca) and BAG-F (61% Si; 31% Ca; 4% P; 3% F; 1% B) were synthesized by the sol-gel method and micronized (size ∼0.1-10 μm). Composites with 72 wt% total filler load were prepared by replacing 15% of the silanized Sr glass with BAG, BAG-F, or silanized silica. Specimens (n = 10/group) were light-cured and divided into 4 subgroups of different surface roughness by wet polishing with 600 and then up to 1200, 2400, or 4000 grit SiC. Surface roughness (SR), gloss, and Knoop microhardness were measured before and after incubating in media with or without a Streptococcus mutans ...
TY - JOUR. T1 - Removal of Cu2+ and SO4 2- from aqueous solutions on surface functionalized dehydrated carbon from date palm leaflets. AU - El-Shafey, El Said I. AU - Al-Busafi, Saleh. AU - Al-Lawati, Hiader A J. AU - Al-Shibli, Aisha S.. PY - 2015/12/14. Y1 - 2015/12/14. N2 - Dehydrated carbon (DC) was prepared from date palm leaflets via sulfuric acid dehydration at 200°C. DC surface was functionalized using ethylene diamine via amide coupling to produce basic dehydrated carbon (BDC). DC possesses high content of carboxylic groups acting as cation exchanger, however, BDC possesses amine and amide groups that are capable of chelating Cu2+. However, when protonated, the amine group acts as anion exchanger for SO4 2-. ∼81% of the carboxylic groups on DC were successfully functionalized to amide-amine groups on BDC surface. Sorption of Cu2+ and SO4 2- was investigated at different initial pH, contact time and ion concentration. Initial pH values for maximum sorption were found to be 5 and 2 for ...
Surface energy is a measure of disruption of chemical bonds that occurs when a surface is created. Most of the hydrophobic surfaces are known to show low surface energy values. It is also well known that hydrophobicity has a role in cell attachment to the surface and biofilm formation. As the biofilm progresses the adhesion is higher and chemical bonding is more hence lower the surface energy. Few studies were carried out on adhesion of biological systems such as proteins, microbes, algae and invertebrates. They all show minimal long-term adhesion associated with surfaces having low energy surfaces. However, all surfaces rapidly become modified on immersion in natural waters through the adsorption of conditioning films, which may influence subsequent adhesive events associated with the permanent attachment of organisms. The results show that surface energy can elicit different responses in different organisms. For most organisms, minimal adhesion is associated with low surface energy. According ...
The aim of the course is to improve knowledge of PhD students about structure and properties of material surfaces. The attention is paid to processes taking place at surfaces, interfaces and in thin layers. The special attention is paid to modern technologies of surface engineering, especilly plasma technologies and thermal coatings. Applications of the most important technologies are demonstrated on practical examples. Basic techniques of structure and property characterisation of material surfaces are discussed ...
Lectures: · Surfaces and interfaces of condensed matter. Utility properties of solids dependent on the surface. Professional discipline dealing with the study, assessment and surface treatment. Damage to solids / metals processes induced effect of stressful events / stressors on the surface. · Surface structure of solids / metals. Important surface properties of solid substances. Geometric, physical, chemical surface properties. Interface Chemistry in solids. · Happens at the interface solid - liquid. Sorption happening. Interaction surface gases, oxygen, hydrogen. The consequences of the interaction metal - oxygen, metal - hydrogen thermodynamic and kinetic aspects of the process, their impact on properties metal surfaces to damage the metal. Erosion, cavitation. · Happens at the interface solid / metal - electrolyte. Double layer. Electrically charged interface. Electrochemical properties of electron-conductive materials, especially metals. Thermodynamic description of processes at the ...
Drug-eluting stents (DESs) have been used for the treatment of cardiovascular diseases including stenosis. However, in-stent restenosis, thrombosis, and delayed re-endothelialization represent challenges for their clinical applications. Here, we demonstrate a novel work to overcome these limitations through surface modification technology. The cobalt-chromium (Co-Cr) surface was modified with antioxidants such as gallic acid (GA) and rutin (Ru) and the corresponding persulfates derivatives (i.e., GAS, and RuS) through a simple conjugation procedure. Various analyses tools such as ATR-FTIR, XPS, water contact angle, SEM, and AFM characterized the functionalized surface. The surface characterization confirmed that the antioxidant and the additional persulfates were successfully bonded to the Co-Cr surface. The results of in vitro endothelial cells proved that the persulfates derivatives showed the highest tendency to get rapid re-endothelialization especially RuS. In addition, it showed inhibition ...
Thallus: foliose, single lobed attached by a single umbilicus and with 14-60 mm wide lobes upper surface: gray, with epinecral layer consisting of air filled hyphae upper cortex: 130-240 µm thick with the outermost 10-20 µm brown medulla: 180-350 µm thick lower cortex: 90-110 µm thick with the outermost 15-40 µm brown, the lower cortex cells are angular and in distinct vertical columns, uneven lower surface were 2-4 cell rows thick outgrowths cause the farinose lower surface of the species lower surface: brown, farinose and often reticulate, occasionally with rhizinomorphs Perithecia: obpyriform to almost globose, 200-530 x 170-440 µm, primarily with a hyaline exciple that is light brown to brown in the uppermost part, rarely hyaline throughout asci: clavate or cylindrical, 8spored ascospores: simple, hyaline, 12-17 x 5-9 µm Pycnidia: not found in Sonoran material, elsewhere immersed, ostiolum similar to that of the perithecium conidia: bacilliform, 4-6 x 1 µm Spot tests: all negative ...
Activation energy of time-dependent martensite formation in steel. / Villa, Matteo; Somers, Marcel A. J.. Proceedings of the International Conference on Martensitic Transformations (ICOMAT 2017). ed. / Aaron Stebner; Greg Olson; Valery Levitas; Emmanuel De Moo; Othmane Benafan; Ibrahim Karaman; Mohsen Asle Zaeem; Peter Anderson; David Rowenhorst; Avadh Saxena; Reginald Hamilton; Alan Pelton; Peter Müllner; Michael Mills; Ricardo Komai. 2018.. Publication: Research - peer-review › Article in proceedings - Annual report year: 2018 ...
The technological evolution of ceramics and polymers during the last three decades makes it possible to apply these materials to medical devices; in fact, many metal devices have been replaced with those made of ceramics and polymers. In spite of this event, over 70 per cent of implant devices still consist of metals because of their high strength, toughness and durability. At present, it is difficult to replace the metals in medical devices with ceramics or polymers.. A disadvantage of using metals as biomaterials is that they are typically artificial materials and have no biofunction. To add biofunction to metals, surface modification is necessary because biofunction cannot be added during manufacturing processes such as melting, casting, forging and heat treatment. Surface modification is a process that changes a materials surface composition, structure and morphology, leaving the bulk mechanical properties intact. With surface modification, the tissue compatibility of the surface layer can ...
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Bionanoprobes were created using cytochromes c isolated from horse heart (HCc) or yeast (YCc); and citrate-stabilized AuNPs. The two cytochromes c generated bionanoprobes with remarkably distinct surface properties. The combination of spectrophotometric pH-titrations and circular dichroism spectroscopy provided information on the protein layer of the bionanoprobes, revealing distinct protonation patterns for the two systems as reflected by its pH-induced aggregation. The YCc bionanoprobe revealed changes in the secondary structure of its protein layer that were practically absent in the protein layer of the HCc bionanoprobes. Atomic force microscopy and dynamic light scattering and determination of -potencial, provided insights on the layer structure and surface coverage and potential. These techniques confirmed a thick protein layer for the YCc bionanoprobe of ca. 4 nm whereas the HCc bionanoprobe presented a protein layer with ca. 2 nm that can be removed by sample drying. The surface potential of
Considering the added cost for impact modification and cast formed sheet the vast majority of acrylic glazed skylights utilize general purpose extruded acrylic.. Specify surface finish. Surface finish may be smooth. Textured finishes have very little effect on the mechanical and thermal properties of the acrylic however surface finish may have a significant impact on optical properties. The most common texture utilized by skylight manufacturers is prismatic. The prismatic texture on a clear acrylic will produce a 95% to 100% haze/diffusion. Whereas a smooth surface on a clear acrylic will have 0% to 3% haze/diffusion. Medium white smooth acrylic and medium white prismatic acrylic are very similar in their haze/diffusion of 95%.. Specify color. Color has no affect on mechanical or thermal properties but it will affect the optical properties of light transmission and haze/diffusion as previously noted.. Many colors are available however white, bronze and gray are the most common with white the ...
The strength degrading effects of sharp-contact damage are examined for Y-TZP ceramic plates bonded to a plastic substrate. Contacts are made with Vickers and Berkovich diamond indenters at low loads (0.1 N to 100 N) in the ceramic lower surfaces prior to bonding to the substrates. The indentations remain in the subthreshold region, that is, without visible corner radial cracks, over the lower region (| 10 N) of the load range. A concentrated load is then applied sinusoidally to the ceramic upper surface, with the loading axis centered on the subsurface indentation flaw, thereby subjecting the flaw to cyclic tension. Relative to polished surfaces, the indentations diminish the single-cycle strength by an amount that increases with increasing indentation load. The critical number of cycles required to cause failure from the indentation flaws is then measured at specified maximum lower surface tensile stresses. At each indentation load, the strength of the ceramic plates diminishes with increased cycling.
2012 (English)In: Journal of Quantitative Spectroscopy and Radiative Transfer, ISSN 0022-4073, E-ISSN 1879-1352, Vol. 113, no 1, p. 117-117Article in journal (Refereed) Published ...
Li C. Surface Phase Transformation of TiO2 and its Photocatalytic Significance Studied by UV Raman Spectroscopy[C]. 见:III International Conference Catalysis:Fundimentals and Application. Russia. 2007-7-4 ...
Acrylic pressure sensitive adhesives (PSAs) have a range of applications in industry, such as medical products, aircraft, space shuttles, electrical devices, optical products, and automobiles, etc. In this study, acrylic PSAs with fluorinated groups were synthesized using 2,2,2-trifluoroethyl methacrylate (TFMA) under UV radiation. The surface properties and adhesion strength were measured. The results showed that the addition of TFMA reduced the surface energy of the PSAs and improved the adhesion strength. POLYM. ENG. SCI., 2013. © 2013 Society of Plastics Engineers ...
Although there are several studies of the ultraviolet (UV) light-mediated photofunctionalization of titanium for use as implant material, the underlying mechanism is not fully understood. However, the results of in vitro and in vivo studies are very encouraging. The use of UV photofunctionalization as a surface treatment on other implant materials, as the Cr-Co-Mo alloy, has not been explored in depth. Using sandblasted Cr-Co-Mo discs, the surface photofunctionalization was studied for ultraviolet A (UVA, 365 nm) and ultraviolet C (UVC, 254 nm), and the surfaces were evaluated for their ability to sustain hydroxyapatite crystal growth through incubation in simulated body fluid for a seven-day period. The variation of the pre- and post-irradiation contact angle and surface composition was determined through the quantification of the weight percentage of Ca and P crystals by the EDAX ZAF method (EDS). Statistically significant differences (p < 0.05) were found for samples irradiated with UVA over 48 h,
The direct coupling of complex, functional organic molecules at a surface is one of the outstanding challenges in the road map to future molecular devices. Equally demanding is to meet this challenge without recourse to additional functionalization of the molecular building blocks and via clean surface reactions that leave no surface contamination. Here, we demonstrate the directional coupling of unfunctionalized porphyrin molecules-large aromatic multifunctional building blocks-on a single crystal copper surface, which generates highly oriented one-dimensional organometallic macromolecular nanostructures (wires) in a reaction which generates gaseous hydrogen as the only byproduct. In situ scanning tunneling microscopy and temperature programmed desorption, supported by theoretical modeling, reveal that the process is driven by C-H bond scission and the incorporation of copper atoms in between the organic components to form a very stable organocopper oligomer comprising organometallic edge-to-edge
The quantification of local surface morphology in the human cortex is important for examining population differences as well as developmental changes in neurodegenerative or neurodevelopmental disorders. We propose a novel cortical shape measure, referred to as the shape complexity index (SCI), that represents localized shape complexity as the difference between the observed distributions of local surface topology, as quantified by the shape index (SI) measure, to its best fitting simple topological model within a given neighborhood. We apply a relatively small, adaptive geodesic kernel to calculate the SCI. Due to the small size of the kernel, the proposed SCI measure captures fine differences of cortical shape. With this novel cortical feature, we aim to capture comparatively small local surface changes that capture a) the widening versus deepening of sulcal and gyral regions, as well as b) the emergence and development of secondary and tertiary sulci. Current cortical shape measures, such ...
correlation function, target detection, random rough surface, ROC. Abstract. We consider the problem of detection of a conducting target on a random rough surface and introduce a new method based on exploiting angular correlation function (ACF) of the backscattered signal to improve detection performance. We show that ACF exhibits better signal to clutter ratio than that of backscatter RCS. We analyze the probability distribution function of the expected returned signal and the correlation function to generate the respective ROC curves and compare performance. Download the PDF version. ...
The approaches used for bone repair problems encountered in fracture treatment, joint replacement revision surgery and spinal fusion procedures including utilization of autografts, allografts and synthetic grafts were described. The scaffolds with grafted biological groups and both cellular adhesion and osteogenic cell differentiation were also analyzed. The adhesion of K 100 cells to 3-aminopropyltriethoxysilane (APTES) and RGD on APTES were determined to examine the roles of non-specific and specific forces on αvβ3 integrin-mediated cell adhesion. The biomaterials designed with positively-charged surfaces could amplify the effectiveness of tethered RGD peptides to stimulate cell activity.
Surface finish must be appropriate for the design objectives. If the part roughness is much greater than the coating thickness, then the coating cannot work properly. In a sliding wear application, the peaks of the roughness can shear off, exposing substrate material. In some applications, a part should not be too smooth either. In these applications a mirror finish can lead to sticking caused by suction between parts. A micro-rough finish can be advantageous to break the vacuum between parts allowing air to penetrate. BryCoat has finishing capabilities to change surface finish in many cases ...
Mechanism of anodic dissolution and passivation of iron - II. Comparison of the behavior in neutral benzoate and acetate buffer solutions
Etchit offers a wide range of secondary services in addition to our photochemical process including Metal Plating, Heat Treating, Passivation, Forming and Bending./
A multi port apparatus (220,440) provides for the treatment of material. Such apparatus comprises at least one wafer (240,320,410), each wafer comprising a central area (246,325,416) providing a plurality of members (18,303,309,360) arranged in a plurality of layers (262,306,308,432) first peripheral support means (241,321,411) encompassing the central area and having upper and lower surfaces (244,245,324,414,415); second peripheral support means (248,326,418), having upper and lower surfaces (251,252,330,421,422) and carried radially outwardly from the first peripheral support means; and a plurality of separate bore fluid chambers (253-256, 335-338, 423-426) defined between the first and second peripheral support means and communicable with the central area; vessel means (228,448) providing a first port (221,441) a second port (222,442) and a plurality of separate bore fluid port means (223-226, 443-446) communicating with the four separate bore fluid chambers; and means for compressing (234,454)
An avionic tray assembly comprising a tray (12) having upper and lower surfaces (28, 30) with an opening (24) is formed in the tray to let the passage of air therethrough. A U-shaped channel member (26) is secured to the lower surface of the tray beneath the peripheral edge (40) of the opening with the opening located above a central portion of the channel to create an overhanging lip above the channel. An elastomeric gasket is located in the channel with a lower portion occupying substantially all of the space within the channel and beneath the overhanging lip and an upper portion extending out of the channel and above the surface of the tray to engage and support an object positioned above the opening in the tray.
When measuring the surface properties of biomaterials, researchers and also manufacturers face special challenges. A main objective is to predict how a material will react when implanted into the human body and how it will interact with biological tissues, fluids, etc. Clinical trials on immune response are costly so measuring everything before that, with the aim of predicting the materials behavior, is key. Other research fields are devoted to the development of new, better materials to advance medical treatment of a range of illnesses, or to providing better medical products for their customers. Typical studies on biomaterials include surface roughness analysis, measuring hardness and structural properties, but also characterization of surface charge, surface interaction, hydrophobic/hydrophilic properties, and many more. Anton Paar has developed specialized solutions for the surface analysis of biomaterials such as prostheses, implants, tissues, biopolymers and biofilms, teeth, various ...
When measuring the surface properties of biomaterials, researchers and also manufacturers face special challenges. A main objective is to predict how a material will react when implanted into the human body and how it will interact with biological tissues, fluids, etc. Clinical trials on immune response are costly so measuring everything before that, with the aim of predicting the materials behavior, is key. Other research fields are devoted to the development of new, better materials to advance medical treatment of a range of illnesses, or to providing better medical products for their customers. Typical studies on biomaterials include surface roughness analysis, measuring hardness and structural properties, but also characterization of surface charge, surface interaction, hydrophobic/hydrophilic properties, and many more. Anton Paar has developed specialized solutions for the surface analysis of biomaterials such as prostheses, implants, tissues, biopolymers and biofilms, teeth, various ...
Water, while simple in structure, contains many unusual physicochemical properties such as a distinct polar charge distribution which leads to the formation of hydrogen bonds. In solutions, these strong water-water interactions lead to relatively weak or unfavorable interactions with nonpolar solutes which indirectly drives the association of hydrophobic materials. This indirect driving force is known as a hydrophobic interaction (HI) which is critical to protein folding/misfolding, ligand-substrate binding, and colloidal self-assembly. Understanding the relationship between HIs and the properties of functionalized surfaces is vital to the design of new materials that enhance control over complex self-assembly and adsorption in aqueous environments. Conventionally, the strength of HIs between surfaces is attributed to interfacial chemical properties, such as the available nonpolar solvent-accessible surface area. However, recent experiments demonstrated that HIs between functionalized ...
Hi! I bought my two ADFs about a month and a half ago and now their legs are red on the inside and one of them keeps hanging out at the surface. he can go to the bottom and stay there, but then he swims back up and floats. I do weekly water changes (20%) and have no idea what it could be D: they live with one betta in a 10 gallon. I read it could be a bacterial infection? What should I do ?!
***Thank You to Vicky Marlow for gathering this important information The post approach which I employ is traditionally known as the muscle sparing approach and the anterior and anterolateral approaches which is very popular in the U.S and some parts of Europe are the muscle compromising approaches. The muscle here refers to the Abductor group…
A method of cleaning a substrate includes: (1) lathing a substrate surface with a cutting fluid composition containing (A) an antioxidant, (B) a surfactant, (C) a lubricant, and (D) water; (2) rinsing the lathed substrate surface with high quality deionized water having a resistivity of at least 2M ohm-cm; (3) immersing the rinsed lathed substrate surface in a bath of high quality deionized water having a resistivity of at least 2M ohm-cm; and (4) removing the substrate from the bath of deionized water at a rate low enough to prevent water droplets from forming on the substrate.
Thermally sprayed (TS) coatings are widely used for surface engineering across a range of industries, including aerospace, infrastructure and biomedical. TS materials are formed via the successive impingement, rapid quenching and build-up of molten powder particles on a substrate. The impacted splats are thus the fundamental microstructural constituents of the coatings, and their intrinsic properties, as well as intersplat bonding and morphology, dictate coating behavior. Beyond the obvious practical considerations, from a scientific standpoint, splats represent a fascinating template for study, due to the highly non-equilibrium processing conditions (rapid deceleration from sub-sonic velocities, million-degree/sec cooling rates). In the literature, many studies of isolated splats on substrates have been carried out, but these have focused on overall morphology (disc-shape vs fragmented). Direct observations of microstructure, in particular cross-section, are limited in the specimen ...
Obata, Y; Stockert, E; Snyder, S O.; and Old, L J., "G(rada1). A new surface antigen of mouse leukemia defined by naturally occurring antibody and its relationship to murine leukemia virus." (1978). Subject Strain Bibliography 1978. 1760 ...
The article of Kim Calders, John Armston, Glenn Newnham, Martin Herold and Nicholas Goodwin: Implications of sensor configuration and topography on vertical plantprofiles derived from terrestrial LiDAR, has been published in Agricultural and Forest Meteorology, Volume 194, Pages 104-117
Electric Surface Properties of Delrin Used for High Voltage Insulation.POMPES PAR TRANSITIONS MULTIPLES , Electric Surface Properties of Delrin Used for High Voltage Insulation.POMPES PAR TRANSITIONS MULTIP... , کتابخانه دیجیتال دانشگاه آزاد اسلامی خوراسگان
LLPC may also be used to detect conformational changes occuring upon binding of antigen by antibody. Antigen-antibody complexes formed by different lgG antibodies against a large antigen like HSA all had similar surface properties. different from those of both antigen and antibody. In contrast, the surface properties of complexes formed by small antigens haptens are related to those of the lgG antibody ...
An azimuthally-averaged radial surface brightness profile. In the catalogs, it is given as the average surface brightness in a series of annuli. This quantity is in units of maggies per square arcsec. The number of annuli for which there is a measurable signal is listed as nprof, the mean surface brightness is listed as profMean, and the error is listed as profErr. This error includes both photon noise, and the small-scale ``bumpiness in the counts as a function of azimuthal angle. When converting the profMean values to a local surface brightness, it is not the best approach to assign the mean surface brightness to some radius within the annulus and then linearly interpolate between radial bins. Do not use smoothing splines, as they will not go through the points in the cumulative profile and thus (obviously) will not conserve flux. What frames pipeline does, e.g., in determining the Petrosian ratio, is to fit a taut spline to the cumulative profile and then differentiate that spline fit, ...
A liquid discharge head that records by discharging recording liquid is provided with polymer having a first portion with lyophilic group for lyophilic processing on a partial surface formed at least on a part of the inner face having recording liquid internally filled to be in contact therewith, and a second portion with a group having substantially the same or the same interfacial energy as the surface energy of the partial surface but different from the interfacial energy of the lyophilic group, while the second portion being orientated toward the partial surface, and the first portion being orientated in the direction different from the partial surface. With the structure thus arranged, the surface energy of the inner face of the liquid discharge head is essentially uniformalized, hence preventing air accumulation from being generated in the portion having lower surface energy.
A single pair of alleles determine surface pattern, the allele producing lined surface pattern being dominant (since lined surface is most frequent in F2). Therefore, the F2 should show a ratio of 3 lined: 1 plain. Any deviation from this ratio is due to chance alone ...
Video created by Instituto Avançado de Estudo de Ciência e Tecnologia da Coreia do Sul (KAIST) for the course Intro to Acoustics (Part 1). You will now learn when the waves meet on a flat surface of discontinuity. It will be explained with the ...
Any information on the Jogging track such as. How many laps equal a mile? Time limitations? Surface composition. Is the track undercover or exposed to the...
A device for the quantified evaluation of surface characteristics including a first radiation structure which is arranged in a first predetermined angle with respect to a surface to be analyzed and which directs radiation onto the surface to be analyzed, wherein the radiation directed onto the surface has at least one component with wavelengths in the infrared area, a detection apparatus arranged in a second predetermined angle with respect to the surface to be analyzed detecting the radiation radiated onto the surface and being thrown back from it.
Surface Engineering: Microstructural Evaluation of High Oxidation Resistant CrAlSiN Hard Coating at Elevated Temperature in Air Atmosphere
Mackays is an established surface engineering company with expertise in providing dynamic and innovative coating solutions for wear, corrosion and erosion problems by increasing service life and improving the performance of vital components.. Mackays has a complete in-house coating facility with a large machine shop and extensive grinding and super-finishing capabilities, thereby retaining control of finished items. Our coating and plating equipment is constantly being developed, upgraded and calibrated to ensure conformity to the highest standards. These factors ensure that Mackays maintains a leading position in the fields of thermal spraying, plasma transfer arc (PTA) and micro welding, plating and finishing.. ...
The Nuclear Advanced Materials Research Centre NAMRC Rotherham is running a seminar on surface and particulate engineering Tuesday 6 November 2012.. The Materials Knowledge Transfer Network presents an introduction to opportunities for surface and particulate engineering in the nuclear new build programme.. This timely seminar will give an insight into how the surface engineering particulate companies can become engaged with nuclear new build.. The day includes an introduction to the Nuclear AMRCs Fit for Nuclear (F4N) assessment for engineering manufacturing companies. The F4N assessment will identify any gaps in your companys performance in terms of meeting standards expected by the reactor vendors and their supply chain partners in key areas of business operations.. Companies and universities will be given the opportunity to describe their capabilities through a five minute presentation. Please contact Keith Harrison if you would like to give a presentation.. There will also be an ...
Methods for improving layered manufacturing techniques to improve an objects surface properties and shorten manufacturing time for support structures. One aspect of the invention forms surfaces having reduced or no concavities between layers having improved crack resistance. One method deposits alternate, surface improvement material on each layer near the future location of the main material surface, followed by deposition of the main material, the edges of which conform to the previously deposited and solidified alternate material. In this method, the center of the main material layers can be concave rather than the interlayer regions. Another aspect of the invention provides removable structures to support the deposition of main material. The support structures provide support over main material cavities for depositing the material to form the cavity ceilings, while minimizing the time and material required to build the support structures. Minimized support structures include structures formed
Objective: help catalyse the creation of collaborative r & d projects in the field of surface engineering. This will be done through the operation of a network of people in the participating countries ...
At low molecular areas, fluorocarbon-hydrocarbon diblocks (CnF2n+1CmH2m+1, FnHm), when spread as Langmuir monolayers on water, form organized monodisperse circular self-assembled domains, one molecule high and tens of nanometers in diameter. Whether such domains form at high molecular areas (low surface pres Surface chemistry and interface science
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Mono- and multilayer Langmuir films floating on aqueous subphase solutions are prepared and their spreading properties investigated by using a rectangular trough (see photo), type BAM 601 of Nima Technology, Ltd. (Coventry, UK). During the film compression and expansion, surface pressure and surface potential is simultaneously measured with a Nima PS-4 surface pressure sensor and an integrated 320C-H-CE non-contact voltmeter with 3250 probe of Trek, Inc. (New York, USA) working as surface potential sensor, respectively. Moreover, the film surface is continuously imaged with 2 µm lateral resolution, during the compression-expansion cycling, with a Brewster angle microscope type EP3-BAM of NFT-Nanofilm Technologie, GmbH (G ttingen, Germany). This microscope can also be used for imaging of the Langmuir-Blodgett (LB) films transferred onto solid substrates ...
From Paramount Industries¡¦ significant experience with Selective Laser Sintering, Paramount Industries knows the material performance and mechanical properties of a given SLS material is correlated directly with many material as well as process parameters that must be optimized to achieve the required performance parameters of strength, modulus, porosity, dimensional accuracy, surface roughness, and the compliance of any post-processing that may improve mechanical properties, enhance surface finish, or provide protective coating. However the optimization and processing of existing HT materials for SLS presents a dual technical challenge the optimization of the material properties and the optimization of the SLS process. The proposed Paramount Industries innovation includes the use of two high performance proven HT resistant materials that have been previously screened for SLS. To demonstrate the feasibility of delivering a mission supportive solution and adapting advanced SLS HT materials and ...
An investigation of the mechanical and surface properties of weft knitted fabrics and their influence on sewability during garment ...
This is a list of changes made recently to pages linked from a specified page (or to members of a specified category). Pages on your watchlist are bold. ...
human download surface chemistry of froth flotation volume 1 of major laboratory with fertility system: an web-based mile options practice. Fertil Steril 2013; 100: 492-499. second download surface chemistry after weed of met, were detailed Average identity.
|p|Something to play with or something to chew on? The Bite & Play is equally suited for both and enables babies to quickly forget their teething troubles.|/p| |p| |/p| |ul| |li||strong|Various surface structures |/strong|and materials mak
This process comprises selectively etching silicon to expose the underside of metal stripes, terminals, contact holes, oxide interfaces and other elemen...
Part of the yadCKLM-htrE-yadVN fimbrial operon. Could contribute to adhesion to various surfaces in specific environmental niches.
Conversion coating is a film of a chemical compound formed in the reaction of the substrate substance with another substance. This reaction distinguishes conversion coating from a conventional coating applied on the substrate surface without changing its chemical state. Examples of conversion coating are black oxide, which is formed on the metal surface as a result of a chemical reaction of the metal atoms with an oxidizing agent (air, aqueous solution, molten salts) and Phosphating (coating consisting of an insoluble crystalline metal-phosphate salt formed in a chemical reaction between the substrate metal and a phosphoric acid solution ...
Systems and methods are provided that include a plate member engageable to the spinal column with an anchor assembly. The anchor assembly includes a coupling member having a post extending through at least one opening of the plate member and an anchor member pivotally captured in a receiver member of the coupling member below a lower surface of the plate member. A locking member secures the plate member to the coupling member. The coupling member includes an extended post with a proximal removable portion. The extended post facilitates placement of the plate member in position relative to the anchor assembly when engaged to the patient and be employed to reduce the plate member toward the anchor assembly when engaged to a vertebra.
Mugwort is a slightly aromatic perrenial herb, growing up to 1.5m.. Flowerheads are oval and up to 4mm.. Bracts are lanceolate and woolly.. Ray florets are female and disk florets are hermaphrodite.. Both are yellow or brownish purple.. Leaves dark green and pinnately divided.. The lower surfaces are grey and woolly.. Stems are reddish, grooved and angled.. ...
Field studies conducted on three separate well pads showed that one 2K7 Water Soluble Pak (WSP) per 10 m3 (63 bbl) surface water effectively reduced bacterial levels from ,106 to,104 with agitation of the fluid reducing the reaction time. This fluid was then used for CT bridge plug milling operations and bacteria levels monitored at various fluid locations in the closed loop throughout the operations.. Evaluation of flowback from the wellbore indicated consistently lower bacterial concentrations than the injected surface water. Despite this, bacteria levels at surface were rebounding. Therefore, the observed increases in surface bacteria were due to the population rebounding while sitting in the surface tanks.. This rebound effect was because the CT fluid for the mill-out operations was reused for each successive pad well. As flowback water was introduced into the surface tanks, so were the additives (polymers, surfactants) from stimulation operations that, along with dissolved formation ...
Field studies conducted on three separate well pads showed that one 2K7 Water Soluble Pak (WSP) per 10 m3 (63 bbl) surface water effectively reduced bacterial levels from ,106 to,104 with agitation of the fluid reducing the reaction time. This fluid was then used for CT bridge plug milling operations and bacteria levels monitored at various fluid locations in the closed loop throughout the operations.. Evaluation of flowback from the wellbore indicated consistently lower bacterial concentrations than the injected surface water. Despite this, bacteria levels at surface were rebounding. Therefore, the observed increases in surface bacteria were due to the population rebounding while sitting in the surface tanks.. This rebound effect was because the CT fluid for the mill-out operations was reused for each successive pad well. As flowback water was introduced into the surface tanks, so were the additives (polymers, surfactants) from stimulation operations that, along with dissolved formation ...
Medium to large tree with a rounded, often irregular crown from a few spreading branches. Trunks often leaning, to 3 feet in diameter, but usually much smaller. Bark thick, pale gray broken into numerous ridges and furrows. Leaves are thick and stiff, the edges rolled downward, dark green above, the lower surface downy, usually 1-2 1/2 inches long. ...
This lesson will define antimicrobial and antibacterial. Youll learn how the two terms are similar and how their definitions, while at surface...
The idea of a bioactive surface coating that enhances bone healing and bone growth is a strong focus of on-going research for bone implant materials. Enamel matrix derivate (EMD) is well documented to support bone regeneration ...
I cant really let you up.". "Here," said the woman from the executive office who had curled around the aperture leading into the security cage, "you cannot just go upstairs to the fourth floor…". "Thats what I told him.". "…and interview people.". "As much as I would like to do that," said Gary, the good-humored man keeping watch at Surface Transit Headquarters.. The woman from the fourth floor had come down because some recent packages had disappeared. There were people coming in for interviews. I certainly didnt want to get Gary in trouble. But Broadway Junctions twisted wonders had rekindled my desire to know more about transit. But I had been spoiled by the hospitality I received at Yonkers City Hall.. Gary had an intimate knowledge of the city. He has contributed several invaluable articles to Forgotten New York. We talked of Chases troubling tendency to gobble up old bank buildings and sully them with their dreaded branding. I mentioned Pat Robertsons religious awakening on the ...
I cant really let you up.". "Here," said the woman from the executive office who had curled around the aperture leading into the security cage, "you cannot just go upstairs to the fourth floor…". "Thats what I told him.". "…and interview people.". "As much as I would like to do that," said Gary, the good-humored man keeping watch at Surface Transit Headquarters.. The woman from the fourth floor had come down because some recent packages had disappeared. There were people coming in for interviews. I certainly didnt want to get Gary in trouble. But Broadway Junctions twisted wonders had rekindled my desire to know more about transit. But I had been spoiled by the hospitality I received at Yonkers City Hall.. Gary had an intimate knowledge of the city. He has contributed several invaluable articles to Forgotten New York. We talked of Chases troubling tendency to gobble up old bank buildings and sully them with their dreaded branding. I mentioned Pat Robertsons religious awakening on the ...
During what has been a near catastrophic market decline for the iPad, in the Surface Pro, Microsoft has created what the iPad should have really been.
The goal of this Ph.D. project is to investigate and improve the methods for describing the surface of 3D objects, with focus on modeling geometric texture on surfaces. Surface modeling being a large field of research, the work done during this project concentrated around a few smaller areas corresponding to the research papers presented here. One of those areas is formulating surface priors by utilizing local surface properties. A well defined prior can, in a Bayesian framework, assist many common task in geometry processing, like denoising, object recovery, object matching and classification. Some of the priors described here are defined on the main entities of the triangular mesh, vertices, edges and faces. Other priors are defined on small planar patches, denoted surfels. Another area of research deals with textures which cannot be described by height fields, for example biological features like thorns, bark and scales. Presented here is a simple method for easy modeling, transferring and ...
Little Smilemakers Studio was founded in 2011 by Maaike Boot. Our studio focusses on creating a strong visual language for our clients. Building visual branding strategies, researching world wide trends and creating a steady signature for clients and their products in design; with our illustrations, logo designs and surface pattern designs ...
Pair potentials afford a quantitative starting point for studying the vacancy formation energy E-v in hot close-packed crystals such as Ar. A summary will be given of the relation of E-v to the melting temperature T-m, via liquid structure, and a brief comment made on the role of three-body-forces. This leads into a discussion of criteria characterizing the solid-liquid phase transition, one of these being the assertion that a close-packed crystal melts when the internal energy required to create a localized hole (the unrelaxed vacancy in the hot crystal) is equal to the change in internal energy at T-m required to expand the liquid by one atomic volume. When N-body forces become important and are treated by so-called glue models, exemplified in the work of R. A. Johnson (1988, Physical Review B, 37, 3924), on a model of Cu metal, the important role of the shear modulus in determining both E-v (now at T = 0) and the divacancy binding energy is stressed. Finally, E-v in, for example, Al is ...
Alfa Laval tank covers are high-quality openings that provide quick, easy and convenient entry and egress to tank interiors in the dairy, food and beverage, and biopharm industries. We offer more than 50 different types of oval, circular and rectangular covers, providing a quick, easy and convenient entry and access to tank interiors. Available with a variety of surface finishes and seal materials, these securely fit the openings of high/low or non pressure tanks.. ...
Intracellular trafficking pathways that control surface expression of vascular myocyte ion channels are poorly understood. The aim of this study was to identify mechanism(s) and functional significance of BKα trafficking and to investigate regulation by vasoactive agents in arterial myocytes. Our data indicate that 1) BKα is primarily plasma membrane-localized and is trafficked to the plasma membrane via a rab4A-dependent, but not rab11A or rab11B-dependent, pathway; 2) ANG II stimulates a PKC-dependent reduction in surface and total BKα, whereas nitric oxide (NO) does not alter BKα surface expression; 3) ANG II did not alter surface or total β1 protein; 4) ANG II-induced reduction in surface BKα is blocked by inhibitors of endocytosis and lysosomal and proteasomal degradation; and 5) ANG II-induced BKα internalization and degradation reduces BK currents in arterial myocytes, elevates myogenic tone, and decreases vasoactive responses to iberiotoxin and NS1619. These data indicate that ANG ...
Frühjahrstagung DPG, Sektion Kondensierte Materie, Fachverband Dünne Schichten, Regensburg, 10.-15. März 2013 Verhandlungen der Deutschen Physikalischen Gesellschaft, R.6, B.48(2013), DS ...
The original goals of the JET ITER-like wall included the study of the impact of an all W divertor on plasma operation (Coenen et al 2013 Nucl. Fusion 53 073043) and fuel retention (Brezinsek et al 2013 Nucl. Fusion 53 083023). ITER has recently decided to install a full-tungsten (W) divertor from the start of operations. One of the key inputs required in support of this decision was the study of the possibility of W melting and melt splashing during transients. Damage of this type can lead to modifications of surface topology which could lead to higher disruption frequency or compromise subsequent plasma operation. Although every effort will be made to avoid leading edges, ITER plasma stored energies are sufficient that transients can drive shallow melting on the top surfaces of components. JET is able to produce ELMs large enough to allow access to transient melting in a regime of relevance to ITER. Transient W melt experiments were performed in JET using a dedicated divertor module and a ...