Dr Costerton pioneered the development of the biofilm theory of which bacteria grow enclosed in a protective, biopolymeric matrix forming a film that is adherent to solid surfaces (a sessile organism). Together with University of Copenhagens Dr. Niels Høiby, he strongly promoted the view that bacteria in biofilms differ from their planktonic (free-floating) counterparts (Costerton et al., Sci Am 1978).. Dr Costerton published over 700 peer-reviewed papers that provide a solid basis for the understanding of bacterial processes in environmental, dental and medical microbiology. The research led to many industrial and medical relevant breakthroughs, confirming that biofilms cause chronic infections and biofilm implant-related infections represent one of the most difficult-to-treat infections in humans.. Dr John William Costerton died on 12 May 2012.. ...
Agricultural drought - A drought that extends only a short period of time and has noticeable effects on plants.. Aquifers - A rock or soil formation capable of storing and transmitting usable ground water to the surface of the land.. Bacteria (fecal coliform) - a type of coliform bacteria found in the intestines of humans and warm blooded animals that aids in the digestion process and is used as an indicator of fecal contamination and/or possible presence of pathogens.. Baseflow - The basic level of water in a stream or river.. Best Management Practices (BMPs) - Individual methods, practices, or structures designed to reduce or prevent possible water pollution while maintaining economic returns.. Deep percolation - Water that moves below the root zone of plants.. Denitrification - The bacterial process of converting nitrate into atmospheric nitrogen.. Dissolved oxygen (DO) - Oxygen gas (O2) dissolved in water.. Drought - A long period of abnormally low rainfall.. Erosion - the wearing away of ...
Unique bacterial process, trans-translation, has been studied to be an important process in many bacteria. However, there was nothing known about the significance of this process in mycobacteria, especially in relation to drug susceptibility. Consistent with findings in Escherichia coli, Salmonella typhimurium, and Synechocystis sp., we found that interfering with the expression of tmRNA and the smpB gene (critical components of trans-translation) in Mycobacterium smegmatis caused increased bactericidal activity of antimicrobial agents that target the ribosomes. Moreover, exposure to ribosome inhibitors increased the expression of tmRNA. This increase was driven by the tmRNA gene promoter which activity seemed to utilize a de-repression mechanism. Not only is trans-translation important to the bacterial response to ribosome inhibitors, evidence from this laboratory suggests that trans-translation is essential in mycobacteria. Thus, we believe that trans-translation may represent a new important ...
SE «Dnepropetrovsk Medical Academy, Ministry of Health of Ukraine», Dnepr, Ukraine The article based on the literature demonstrated a role in the development of cellular immune reactions in response pneumonia caused by Pseudomonas aeruginosa. The mechanisms described of recruitment and activation of pro-inflammatory immune cells, killing the bacterial processes that ensure effective sanogenesis infection by Pseudomonas aeruginosa and prevent the formation of a chronic inflammatory process. Key words: pneumonia, Pseudomonas aeruginosa, bacterial killing, immune cells References 1. Abaturov AE. 2009. Meaning metallosvyazyvayuschih nonspecific proteins in protection of the respiratory tract. 1. Lactoferrin. Child Health. 4(19): 125-128. 2. Abaturov AE, Volosovets AP, Yulish EI. 2013. The role of prooxidant and antioxidant systems in inflammatory diseases of the respiratory. Kharkov, Planet Print: 496. 3. Abaturov AE, Gerasimenko ON, Vysochina IL, Zavgorodnyaya NJ. 2011. Defensins and ...
To talk about hei cha, or dark tea, these definitions need to be kept in mind:. - In Chinese usage, red tea means those fully oxidized teas like keemun or Yunnan dian hongs.. - Black, or dark teas refers to those teas that undergo a "post-fermentation," a bacterial process beyond the realm of processing most green, wulong, and red teas.. - Puer is a class/category of dark teas (hei cha), but only one of several.. - Hei cha has been around for centuries. It was commonly traded with other countries/regions. But today you could ask the average Chinese person under the age of 45 in Beijing or Shanghai, and 7 out of 10 could tell you almost nothing about hei cha.. For more on categories or classes of Chinese tea, see my July post.. So I went to my tea colleagues to hear what they had learned about hei cha.. Bill Waddington (a.k.a. BW) is founder of Tea Source. He has been travelling to Hunan to do detective work on and source hei cha for several years now.. Gingko Seto (a.k.a. GS) owns and operates ...
About the authors vii Preface ix. Chapter 1 Introduction to oral microbiology 2. Commensals and pathogens. Oral diseases. Chapter 2 In the beginning 4. The first microbes. Microbial basis of infectious disease. Miller and the chemoparasitic theory of caries. Oral and dental research. Chapter 3 Caries as an infectious disease 6. Dental caries as a transmissible disease. Streptococcus mutans. Mutans group streptococci. Link between S. mutans and dental caries. Immunity to caries. Chapter 4 General properties of saliva 8. Saliva production. Protective role of saliva. Salivary pellicle. Saliva as a nutrient. Chapter 5 Salivary mucins and agglutinins 10. Composition of mucins. Properties of mucins. Bacterial agglutination. Chapter 6 Secretory Immunoglobulin A 12. Production of S-IgA. Functions of S-IgA. Inactivation of salivary defenses. Development of S-IgA. The window of infectivity. Selective IgA deficiency. Chapter 7 Anti-microbial properties of saliva 14. Anti-microbial components in ...
Oral Microbiology, 5th Edition y Philip D. Marsh BSc PhD, Michael V. Martin MBE BDS BA PhD FRCPath FFGDPRCS (UK), Michael A. O. Lewis PhD BDS FDSRCPS FDSRCS(Ed
This paper examined the local structural properties of Pt nanoparticles on SiO 2, TiO 2-SiO 2, and ZrO 2-SiO 2 supports to better understand the impact of oxide-support type on the performance of Pt-based catalysts. In situ X-ray absorption fine structure (XAFS) measurements were taken for the Pt L3-edge in a temperature range from 300 to 700 K in He, H 2, and O 2 gas environments. The XAFS measurements demonstrated that Pt atoms were highly dispersed on TiO 2-SiO 2 and ZrO 2-SiO 2 forming pancake-shaped nanoparticles, whereas Pt atoms formed larger particles of hemispherical shapes on SiO 2 supports. Contrary to the SiO 2 case, the coordination numbers for Pt, Ti, and Zr around Pt atoms on the TiO 2-SiO 2 and ZrO 2-SiO 2 supports were nearly constant from 300 to 700 K under the different gas environments. These results are consistent with the improvements in thermal stability of Pt nanoparticles achieved by incorporating TiO 2 or ZrO 2 on the surface of SiO 2 supports. XAFS analysis further ...
This paper examined the local structural properties of Pt nanoparticles on SiO 2, TiO 2-SiO 2, and ZrO 2-SiO 2 supports to better understand the impact of oxide-support type on the performance of Pt-based catalysts. In situ X-ray absorption fine structure (XAFS) measurements were taken for the Pt L3-edge in a temperature range from 300 to 700 K in He, H 2, and O 2 gas environments. The XAFS measurements demonstrated that Pt atoms were highly dispersed on TiO 2-SiO 2 and ZrO 2-SiO 2 forming pancake-shaped nanoparticles, whereas Pt atoms formed larger particles of hemispherical shapes on SiO 2 supports. Contrary to the SiO 2 case, the coordination numbers for Pt, Ti, and Zr around Pt atoms on the TiO 2-SiO 2 and ZrO 2-SiO 2 supports were nearly constant from 300 to 700 K under the different gas environments. These results are consistent with the improvements in thermal stability of Pt nanoparticles achieved by incorporating TiO 2 or ZrO 2 on the surface of SiO 2 supports. XAFS analysis further ...
The oral pathogen Tannerella forsythia possesses a unique surface (S-) layer with a complex O-glycan containing a bacterial sialic acid mimic in the form of either pseudaminic acid or legionaminic acid at its terminal position. We hypothesize that different T. forsythia strains employ these stereoisomeric sugar acids for interacting with the immune system and resident host tissues in the periodontium. Here, we show how T. forsythia strains ATCC 43037 and UB4, displaying pseudaminic acid and legionaminic acid, respectively, and selected cell surface mutants of these strains, modulate the immune response in monocytes and human oral keratinocytes (HOK) using a multiplex immunoassay ...
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Pt [email protected] Metal-Organic Frameworks: Efficient Hydrogen Evolution via Synergistic Photoexcitation and Electron Injection
A facile and effective photo-reduction approach to deposit Pt nanoparticles on MIL-100(Fe) by using a metal-organic framework (MOF) itself as a photoactive catalyst has been developed. The synthesized samples were characterized using X-ray diffraction (XRD), UV-vis diffuse reflectance spectroscopy (DRS), X-r
Page contains details about TiO2 nanotubes decorated with Pt nanoparticles . It has composition images, properties, Characterization methods, synthesis, applications and reference articles : nano.nature.com
MC 224. Microbiology. 6 Units.. The biology of microorganisms that cause disease, including caries, and periodontal and endodontic infections. Microbial structure, metabolism, genetics, and virulence factors; molecular diagnostics and recombinant DNA technology. Pathogenesis, epidemiology, clinical syndromes, laboratory diagnosis, treatment, and prevention of infectious diseases. Innate, humoral and cell-mediated immunity, hypersensitivity and vaccines. Antibacterial, antiviral and antifungal agents. Bacterial infections, including oral manifestations; oral microbiology. Virology, with emphasis on HIV, herpesviruses, and hepatitis viruses; oral manifestations of viral infections. Mycology, with emphasis on oral infections. Parasitology, with emphasis on global public health. Microbiology laboratory, focusing on the human skin and oral microbiome. (57 lecture hours, including independent study hours; 15 laboratory hours. Quarters 4-5 ...
Diagnosis: Although initially I was concerned about a bacterial lymphangitis, I now think this is most consistent with lymphangitis secondary to insect bite rather than a sign of a bacterial etiology. Yeat knows the initial lesions are bites and he feels well otherwise. I suppose a bite could have been superinfected with strep, so the Augmentin makes sense; but it could also be based on another mechanism. There are a few pertinent references including one from the BMJ which Mr. Yeat found (# 2). I am not convinced this is from bedbugs as many types of arthropod bites apparently can cause lymphangitis. Its curious that so few cases have been reported. This may be because the patients appear to have a bacterial process, are treated with antibiotics and get better as they would over a few days even without the medications. It would be important to know if bed bugs have been found in his dormitory ...
BackgroundDNA adenine methylation plays an important role in several critical bacterial processes including mismatch repair, the timing of DNA replication and the transcriptional control of gene expression. The dependence of bacterial virulence on DNA adenine methyltransferase (Dam) has led to the proposal that selective Dam inhibitors might function as broad spectrum antibiotics.Methodology/Principal FindingsHerein we report the expression and purification of Yersinia pestis Dam and the development of a continuous fluorescence based assay for DNA adenine methyltransferase activity that is suitable for determining the kinetic parameters of the enzyme and for high throughput screening against potential Dam inhibitors. The assay utilised a hemimethylated break light oligonucleotide substrate containing a GATC methylation site. When this substrate was fully methylated by Dam, it became a substrate for the restriction enzyme DpnI, resulting in separation of fluorophore (fluorescein) and quencher (dabcyl)
The presence of Escherichia coli (E. coli) in food and drinking water is a chronic problem worldwide. Protecting food against bacterial contamination and rapid diagnosis of infection require simple and rapid assays for detection of bacterial pathogens, including E. coli O157:H7. Here we report a rapid and novel colorimetric method for detecting E. coli O157:H7. This colorimetric method is based on the catalytic oxidation of the peroxidase substrate 3,3,5,5-tetramethylbenzidine by hydrogen peroxide using 4-mercaptophenylboronic acid-functioned [email protected] nanoparticles adsorbed on the surface of E. coli O157:H7. The assay showed excellent sensitivity both with the naked eye and based on absorbance measurements. The absorbance at 652 nm was proportional to the concentration of E. coli O157:H7 ranging from 7 to 6 × 10(6) cfu mL(-1) with a limit of detection of 7 cfu mL(-1). The total detection time was less than 40 min.
Dr. Tiffany Wang graduated from the Herman Ostrow School of Dentistry at the University of Southern California. In her years at USC, she has provided comprehensive care in various settings for pediatric, adult and geriatric patients. Dr. Wangs experiences include surgical procedures, endodontic procedures, operative dentistry, removable dentistry, cosmetic and implant restorations.. Dr. Wang is published in the journal of molecular oral microbiology for her research in subgingival plaque. She has volunteered at the Union Rescue Mission at downtown Los Angeles and international humanitarian programs providing care in Nairobi, Kenya and Ensenada, Mexico. She is also an active member of the California Dental Association and the Chinese American Dental Society of Southern California. Dr. Wang loves talking to her patients and getting to know all her patients on a person level. On her free time she likes to hike, paint and take landscape photography.. "Hello I am Dr. Tiffany Wang and I am passionate ...
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NORTHBROOK, Ill., May 14, 2014-- Nanosphere, Inc., a company enhancing medicine through targeted molecular diagnostics, today announced that six studies performed by various U.S. and international medical facilities have been presented at the 24 th European Congress of Clinical Microbiology and Infectious Diseases this week.
Stay up to date with real time RMZFF stock quotes, historical charts and the latest financial news and investing data for NanoSphere Health Sciences Inc.
In the conventional non-invasive cancer treatments, such as photodynamic therapy (PDT) and photothermal therapy (PTT), light irradiation is precisely focused on tumors to induce apoptosis via the generation of reactive oxygen species (ROS) or localized heating. However, overconsumption of oxygen and restrict 2017 Nanoscale HOT Article Collection
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NORTHBROOK, Ill., Oct. 10, 2012-- Nanosphere, Inc.,, a leader in the development and commercialization of advanced molecular diagnostics systems, announced the appointment of Roy N. Davis to the Board of Directors.
Nanowerk Nanotechnology Products and Applications database provides an overview of how nanomaterials and nanostructuring applications are used today in industrial and commercial appplications across industries. Product: NanoSphere
Some adenine methyltransferases have been shown not only to protect specific DNA restriction sites from cleavage by a restriction endonuclease, but also to play a role in various bacterial processes and sometimes in bacterial virulence. This study focused on a type I restriction-modification system (designated yrmI) of Y. pseudotuberculosis. This system is composed of three adjacent genes which could potentially encode an N 6-adenine DNA methylase (YamA), an enzyme involved in site-specific recognition (YrsA) and a restriction endonuclease (YreA). Screening of 85 isolates of Y. pestis and Y. pseudotuberculosis indicated that the yrmI system has been lost by Y. pestis and that yamA (but not yrsA or yreA) is present in all Y. pseudotuberculosis strains tested, suggesting that it may be important at some stages of the epidemiological cycle of this species. To further investigate the role of yamA in Y. pseudotuberculosis survival, multiplication or virulence, a ΔyamA mutant of Y. pseudotuberculosis IP32953
Sensitive sensors must be isolated from their environment as much as possible to avoid disturbances. Scientists at ETH Zurich have now demonstrated how to remove from and add elementary charges to a nanosphere that can be used for measuring extremely weak forces.. A tiny sphere and a laser beam inside of which it hovers as if by magic - with these simple ingredients Martin Frimmer and co-workers at the Photonics Laboratory of ETH Zurich have developed a highly sensitive sensor. In the future this device is expected to measure, amongst other things, extremely weak forces or electric fields very precisely. Now the researchers have taken a major step in that direction, as they write in a recently published scientific paper.. Nanosphere in a laser beam. Martin Frimmer, a post-doctoral researcher in the group of ETH professor Lukas Novotny, explains the working principle of a sensor very plausibly: "First I need to know how the object acting as a sensor is influenced by its environment. Anything that ...
Recent advances in the use of plasmonic metamaterials to improve absorption of light in thin-film solar photovoltaic devices has created a demand for a scalable method of patterning large areas with metal nanostructures deposited in an ordered array. This article describes two methods of fabricating ordered 2D nanosphere colloidal films: spin coating and interface coating. The two methods are compared and parameter optimization discussed. The study reveals that: ...
Nanooze. We need to better understand the impact at the human scale of something developed at the nanoscale. Nanotechnology is developing rapidly in many fields because the demand for faster production and greener products is increasing globally. (10+7) In Health Building News, Penny Bonda questions if nanotechnology is making something really safer or better in NanoSphere - Friend or Foe. "Designtex recently announced the addition of Schoeller Technologys NanoSphere to its repertoire of textile finishes, as a replacement for highly toxic perfluorocarbon stain and water repellants…The [Hohenstein Research] Institute tested the biological safety of NanoSphere for possible biological activity (cytotoxicity and genotoxicity and HET-CAM) and confirms that the new formulation passed these tests with excellent ratings." These tests are at the scale of cells (10-6) and DNA (10-8). "Cytotoxicity is the quality of being toxic to cell health. It is typically measured by treating cells in culture and ...
This week, .US has selected Nanosphere as the "Site of the Week." A great example of American-based scientific innovation at its core, Nanosphere is a molecular diagnostic platform that helps hospitals around the cou ... ...
Platinum has been established as the most powerful electrocatalyst for the 4-electron reduction of oxygen to water in acid medium in a conventional fuel cell. The reaction becomes less efficient and its efficiency suffers from the formation of the hydrogen peroxide intermediate at lower Pt loadings or at higher current densities. Recent progress in the area concerns fabrication of electrocatalysts in a form of carbon-supported platinum nanoparticles assembled within organized multilayers or inks deposited on a proton-conducting membrane. Important issues include the stabilization of Pt nanoparticles (to prevent their agglomeration causing decrease of the active surface area), the enhancement of their reactivity (e.g. by modification of their surfaces or by formation of novel bimetallic systems), the interfacial protection of nanostructured Pt from poisoning (e.g. by the development of methanol or CO tolerant systems using Ru-Se nanoparticles), and the activation of metal nanoparticles through ...
An exact full-wave analysis of plane-wave scattering by a multilayer nanosphere is proposed. The code is then used to study the behavior of N-layered plasmonic spherical particles. Our primary interest lies in achieving extraordinary scattering or transparency in the infrared regime by judicious pairing of plasmonic materials and control of the core-shell ratio. Numerical results and physical insights of these extraordinary phenomena are provided. © 2008 American Institute of Physics ...
NanoSphere Health Sciences, Inc. (CSE: NSHS) (OTC: NSHSF), the biotechnology leader behind the patented NanoSphere Delivery System™, today announced the expansion of its CBD-dominant product-the Evolve Formulas Transdermal NanoSerum™CBD with Resveratrol-across Colorado due to co...
The molecular imprinting techniques have been extensively studied for molecular recognition and their potential applications to separation and catalysis. The traditional imprinting method uses the crosslinking polymerization in the presence of a substrate molecule followed by grinding the bulk system to microparticles with an irregular shape. In addition, the imprinting is restricted to a hydrophobic substrate because the polymerization reaction is usually done in the organic solvent using hydrophobic monomers. In this case, the irregular shape and microparticle size might be a concern for microelectromechanical system (MEMS) application as a biosensor. In this study, we investigated a well-defined nanosphere with a core-shell structure for molecular imprinting. The hydrophilic substrates including D-glucose (D-Glu) or L-phenylalanine (L-Phe) were imprinted on the surface (shell) of nanosphere and their binding behavior were investigated. Their enantiomer (L-Glu or D-Phe) binding behavior to the ...
Weve enriched ODAR with technical Primaloft® Gold Insulation Luxe and honed every detail of it; from the sealed stand-up collar to the adjustable hood to conserve your bodys natural heat. Stay warm. Details: Taurex® technology Nanosphere™ technology Adjustable drawstring hood Primaloft® Gold Insulation Luxe Shell fabric and lining: 100% Polyamide Care: Dry clean only Avoid ironing print
Proton-exchange membrane fuel cells (PEMFCs) are expected to provide a complementary power supply to fossil fuels in the near future. The current reliance of fuel cells on platinum catalysts is undesirable. However, even the best-performing non-noble metal catalysts are not as efficient. To drive commercial viability of fuel cells forward in the short term, increased utilization of Pt catalysts is paramount. We have demonstrated improved power and energy densities in a single PEMFC using a designed cathode with a Pt loading of 0.1 mg cm−2 on a mesoporous conductive entangled carbon nanotube (CNT)-based architecture. This electrode allows for rapid transfer of both fuel and waste to and from the electrode, respectively. Pt particles are bound tightly, directly to CNT sidewalls by a microwave-reduction technique, which provided increased charge transport at this interface. The Pt entangled CNT cathode, in combination with an E-TEK 0.2 mg cm−2 anode, has a maximum power and energy density of ...
TY - PAT. T1 - Nanosphere/Microsphere Delivery System for the Treatment of Spinal Cord Injury. AU - Stelzner, Dennis J.. AU - Osterhout, Donna J.. AU - Hasenwinkel, Julie M.. PY - 2011/9/1. Y1 - 2011/9/1. N2 - A formulation including injectable biodegradable nanospheres and/or microspheres as a delivery system for chondroitinase ABC (cABC) or a functional derivative of cABC to treat acute and chronic spinal chord injury in a mammal having the same is provided. The biodegradable nanosphere/microsphere formulation releases cABC or a functional derivative of cABC in a time-released manner at the site of the spinal cord injury. cABC infusion can promote axon regrowth and some behavioral recovery. The nanospheres and/or microspheres provided herein include cABC or a functional derivative of cABC loaded within and/or on a biodegradable polymer matrix. In some embodiments of the present invention, the surface of the biodegradable polymer matrix can be modified to target a specific scar site. In ...
A label-free amperometric immunosensor based on graphene sheet(GS)-nafion(Nf)/thionine(TH)/Pt nanoparticles modified electrode is proposed for the ultrasensitive detection of kanamycin. The anti-kanamycin antibody was immobilised onto the GS-Nf/TH/Pt modified glassy carbon electrode (GCE) through electrostatic adsorption. TH was selected as an electron transfer mediator, and the synergistic effects among GS, TH ...
PubMed journal article Poly(glycerol adipate)-fatty acid esters as versatile nanocarriers: From nanocubes over ellipsoids to nanosphere were found in PRIME PubMed. Download Prime PubMed App to iPhone, iPad, or Android
TY - JOUR. T1 - Preparation of Pt/zeolite-Nafion composite membranes for self-humidifying polymer electrolyte fuel cells. AU - Son, Dong Hoon. AU - Sharma, Raj Kishore. AU - Shul, Yong Gun. AU - Kim, Hansung. PY - 2007/3/20. Y1 - 2007/3/20. N2 - A novel Pt/zeolite-Nafion (PZN) polymer electrolyte composite membrane is fabricated for self-humidifying polymer electrolyte membrane fuel cells (PEMFCs). A uniform dispersion of Pt nanoparticles with an average size of 3 nm is achieved by ion-exchange of the zeolite HY. The Pt nanoparticles embedded in the membrane provide the catalytic sites for water generation, whereas the zeolite HY-supported Pt particles absorbs water and make it available for humidification during cell operation at elevated temperature. Compared with the performance of ordinary membranes, the performance of cells with PZN membranes is improved significantly under dry conditions. With dry H2 and O2 at 50 °C, the PZN membrane with 0.65 wt.% of Pt/zeolite (0.03 mg Pt cm-2) gives ...
TY - CHAP. T1 - PT/mesoporous carbon nanocatalysts for polymer electrolyte fuel cell. AU - Hayashi, Akari. AU - Kimijima, Kenichi. AU - Yagi, Ichizo. PY - 2010/1/1. Y1 - 2010/1/1. N2 - Mesoporous materials are attractive because of their highly controllable ordered pore structure, and they are possibly used as catalytic nanoreactors if catalysts are successfully deposited within the pores. Among those mesoporous materials, mesoporous carbon (MC) materials were chosen owing to their high electric conductivity, and Pt was deposited inside the pores in order to apply for electrode materials. MC materials are commonly synthesized using mesoporous silica template, but the resulting pores are 2-3 nm sized and probably not large enough to deposit catalyst particles in the pores. Here, MC with relatively large pores was synthesized through self-organization of a surfactant and carbon precursors followed by carbonization. The obtained MC had 7-8 nm sized pores, and Pt nanoparticles were deposited inside ...
Soft but resilient, our technical outer coat is fitted over a supersoft inner jacket with a lambskin hood. With a classic tailored cut and progressive technologies like Taurex® and Nanosphere™, OGMA brings strong lines with gentle edges. Details: Taurex® technology Nanosphere™ technology Adjustable drawstring at the hips Outer Jacket: 100% Polyamide Inner Jacket Shell Fabric A: 100% Lambskin Inner Jacket Shell Fabric B: 81% Polyamide, 19% Elastane Padding: 100% Polyester Care: Outer Jacket Dry clean only Remove inner jacket before dry cleaning Avoid ironing print Inner Jacket Remove outer jacket before dry cleaning Special leather care
The impregnation method was used to synthesize Pt and Pt3Co supported on MWCNTs applying NaBH4 as the reducing agent. The structure, morphology, and chemical composition of the electrocatalysts were characterized through SEM, XRD, and EDX. X-ray diffraction showed a good crystallinity of the supported Pt nanoparticles on the composites and showed the formation of Pt3Co alloy. The SEM images revealed that the particles of Pt3Co were deposited uniformly on the surface of MWCNT with a diameter of 10 nm. EDX analysis confirmed the surface segregation of Co and Pt occurred (1:3 surface atomic ratio Pt-Co) for the Pt3Co/MWCNT nanocomposite. The Pt3Co/MWCNTs and Pt/MWCNTs electrocatalysts electrochemical performance was assessed against the methanol oxidation reaction (MOR) in 0.5 M H2SO4 solution using the chronoamperometry (CA) and the cyclic voltammetry (CV) methods. The minimum onset potential and the largest oxidation current density were obtained at Pt3Co/MWCNTs electrocatalyst. The Pt3Co/MWCNT catalyst
Mission Workshop has some awesome apparel. I gotta get me some of these!! Check them out HERE!. "The Division chino is designed to be hard wearing and long lasting. Constructed using Swiss-made Schoeller®-Dryskin fabric with Nanosphere® water repellent treatment. This durable 4-way stretch nylon fabric is engineered to provide breathability and moisture management in addition to wind and water repellency. All waist sizes feature a 34" inseam.". ...
Prevotella intermedia (formerly Bacteroides intermedius) is a gram-negative, obligate anaerobic pathogenic bacterium involved in periodontal infections, including gingivitis and periodontitis, and often found in acute necrotizing ulcerative gingivitis. It is commonly isolated from dental abscesses, where obligate anaerobes predominate. P. intermedia is thought to be more prevalent in patients with noma. P. intermedia use steroid hormones as growth factors, so their numbers are higher in pregnant women.[citation needed] It has also been isolated from women with bacterial vaginosis. Oral microbiology List of bacterial vaginosis microbiota http://www.oralgen.lanl.gov/oralgen/bacteria/pintnew/ Africa, Charlene; Nel, Janske; Stemmet, Megan (2014). "Anaerobes and Bacterial Vaginosis in Pregnancy: Virulence Factors Contributing to Vaginal Colonisation". International Journal of Environmental Research and Public Health. 11 (7): 6979-7000. doi:10.3390/ijerph110706979. ISSN 1660-4601. PMC 4113856 . PMID ...
Article Fabrication of highly ordered nanohoneycomb (ZnO/Pt) arrays. The double nanohoneycombs (ZnO/Pt) on glass and Si substrates were fabricated by the two-step process of nanosphere lithography (NSL). The working parameters of the fabrication proc...