Background Dibutyl phthalate (DBP) is predominantly used as a plasticizer inplastics to make them flexible. Extensive use of phthalates in both industrial processes and other consumer products has resulted in the ubiquitous presence of phthalates in the environment. In order to better determine the level of pollution in the environment and evaluate the potential adverse effects of exposure to DBP, immunoassay for DBP was developed. Methodology/Principal Findings A monoclonal antibody specific to DBP was produced from a stable hybridoma cell line generated by lymphocyte hybridoma technique. An indirect competitive enzyme-linked immunosorbent assay (icELISA) employing direct coating of hapten on polystyrene microtiter plates was established for the detection of DBP. Polystyrene surface was first oxidized by permanganate in dilute sulfuric acid to generate carboxyl groups. Then dibutyl 4-aminophthalate, which is an analogue of DBP, was covalently linked to the carboxyl groups of polystyrene surface with

Kionex removes potassium from the blood. It is a sodium polystyrene sulfonate, which is a cation-exchange resin, and it helps get rid of extra potassium in the blood. It is also...

Alfa Aesar™ Polystyrene latex microsphere, 0.10 micron, 2.5 wt% dispersion in water 15mL Alfa Aesar™ Polystyrene latex microsphere, 0.10 micron,...

Press Release issued Oct 9, 2012: Polystyrene Industry Outlook in Argentina to 2016 - Market Size, Company Share, Price Trends, Capacity Forecasts of All Active and Planned Plants provides an in-depth coverage of Argentina Polystyrene industry. The research presents major market trends affecting the Polystyrene industry in Argentina. The report covers Argentina Polystyrene plants and presents installed capacity by process and technology. In addition, it presents Polystyrene demand and production forecasts, end use demand forecasts, price trends, trade balance data and company shares of the major Polystyrene producers in Argentina. Overall, the report presents a comprehensive coverage of Argentina Polystyrene industry including all the major parameters.

Nanosphere lithography, an inexpensive and high throughput technique capable of producing nanostructure (below 100 nm feature size) arrays, relies on the formation of a monolayer of self-assembled nanospheres, followed by custom-etching to produce nanometre size features on large-area substrates. A theoretical model underpinning the self-ordering process by centrifugation is proposed to describe the interplay between the spin speed and solution concentration. The model describes the deposition of a dense and uniform monolayer by the implicit contribution of gravity, centrifugal force and surface tension, which can be accounted for using only the spin speed and the solid/liquid volume ratio. We demonstrate that the spin recipe for the monolayer formation can be represented as a pathway on a 2D phase plane. The model accounts for the ratio of polystyrene nanospheres (300 nm), water, methanol and surfactant in the solution, crucial for large area uniform and periodic monolayer deposition. The ...

Bio VI Surface functionalization of biological inert polymers, for example polypropylene and polystyrene, with material binding peptides facilitates an efficient immobilization of enzymes, bioactive peptides or antigens at ambient temperature in water. The developed Peptide Polymer evolution protocol (PePevo) is robust directed evolution protocol that enables to tailor polymer binding anchor peptides for efficient binding under application conditions. Key for a successful directed evolution campaign was to develop an epPCR protocol with a very high mutation frequency, 60 mutations per kb, to ensure sufficient diversity in the peptides LCI and Tachystatin A2. LCI and Tachystatin A2 were genetically fused to the reporter eGFP to quantify peptide binding on polypropylene and polystyrene surfaces by fluorescence analysis. PePevo was validated in two directed evolution campaigns for both peptides and polymers, LCI and polypropylene as well as Tachystatin A2 and Polystyrene. The nonionic surfactant ...

As the resin passes along the intestine or is retained in the colon after administration by enema, the sodium ions are partially released and are replaced by potassium ions

The History of CMP Pharma. CMP Pharma was founded by Henry Smith as Carolina Medical Products Company in 1975 while he was a professor of drug manufacturing at the University of North Carolina at Chapel Hills School of Pharmacy. In 1982, FDA granted Carolina Medical an approval for Sodium Polystyrene Sulfonate Suspension (SPS® Suspension) for the treatment of hyperkalemia. Prior to this, sodium polystyrene sulfonate was only available as a powder for suspension.. Another innovative liquid approval followed for Isoniazid Oral Solution, USP, the only FDA approved liquid treatment for tuberculosis.. Most recently in 2017, CMP received approval of an NDA for Spironolactone Oral Suspension (CaroSpir®) developed specifically for patients who have difficulty swallowing and are suffering from heart failure, edema caused by heart failure and cirrhosis, and hypertension.. Other products include:. ...

The research demonstrates an in-depth analysis of the Flame Retardant High Impact Polystyrene market size as well as current trends with future estimations to interpret the approaching investment pockets.. It offers Flame Retardant High Impact Polystyrene industry analysis from 2019 to 2025, which is expected to allow the stakeholders to exploit the prevailing opportunities in the market.. The extensive analysis of all regions is given to determine the prevailing Flame Retardant High Impact Polystyrene market opportunity.. Key Benefits for Stakeholders:. The company profile of the top companies in the Flame Retardant High Impact Polystyrene industry provides an in-depth analysis of the business description and corporate strategy. Profiling also provides a competitive SWOT analysis of the leading companies in the business segments that operate across the regions. The analysis will cooperate with the stakeholders in understanding the competitive strength and strategies of the company to sustain ...

The local surface properties of polystyrene (PS) dishes incubated for 14 h with gram‐negative cells (Shewanella putrefaciens) were investigated by atomic force microscopy (AFM) in aqueous solutions at two pH values (4 and 10). The AFM images and force curves revealed the presence of a polymeric layer adsorbed onto the PS surfaces in acid media. In contrast, no evolution was observed in the case of basic media

The fabrication of cell sheets is a major requirement for bottom-up tissue engineering purposes (e.g. cell sheet engineering) and regenerative medicine. Employing thermoresponsive polymer coatings as tissue culture substrates allows for the mild, temperature-triggered detachment of intact cell sheets along with their extracellular matrix (ECM). It has been shown before that biocompatible, thermoresponsive poly(glycidyl ether) monolayers on gold substrates can be utilized to harvest confluent cell sheets by simply reducing the temperature to 20 °C. Herein, we report on the first poly(glycidyl ether)-based coating on an application-relevant tissue culture plastic substrate. We devised a simple, substrate geometry-independent method to functionalize polystyrene (PS) surfaces from dilute ethanolic solution via the physical adsorption process of a thermoresponsive poly(glycidyl ether) block-copolymer (PGE) bearing a short, hydrophobic, and photoreactive benzophenone (BP) anchor block. Subsequently, ...

Mueller matrices of dense aqueous suspensions of different concentrations are measured with a phase-modulated Mueller ellipsometer as a function of the scattering angle. Different concentrations of a solution containing 404-nm-diameter polystyrene latex spheres dispersed in water were prepared. Experimental results are compared with a three-dimensional Monte Carlo simulation of the propagation of photons with the cell geometry accounted for. The Fresnel laws and the Mie theory determine the changes in direction and polarization during the propagation of the photon. Excellent agreement over the whole angular range is found between experimental and simulated Mueller matrices.. © 2001 Optical Society of America. Full Article , PDF Article ...

TY - JOUR. T1 - Electrochemical properties and stability of emulsifier-free polystyrene latexes in 1 : 1 electrolyte solutions. AU - Pripisnova, V. A.. AU - Ermakova, L. E.. AU - Golikova, E. V.. AU - Menshikova, A. Yu.. AU - Sidorova, M. P.. PY - 2009. Y1 - 2009. M3 - статья. VL - 71. SP - 534. EP - 540. JO - Colloid Journal of the Russian Academy of Sciences: Kolloidnyi Zhurnal. JF - Colloid Journal of the Russian Academy of Sciences: Kolloidnyi Zhurnal. SN - 1061-933X. IS - 4. ER - ...

The Polystyrene Packaging Council (PSPC) provides facilities to recycle all of you polystyrene waste, such as food packaging, protective and display packaging. Polystyrene is produced from naphtha, a product remaining after the transformation process of petroleum in refineries. A key benefit of polystyrene is that it can be recycled and the PSPC is initiating and setting up recycling programmes all over South Africa.. Polystyrene is generally not a high profile target in recycling terms but many companies, local authorities and individuals may not have considered the implications of just how much polystyrene they are dumping. The recycling of polystyrene is within everyones reach and can be done easily with the help of the PSPC.. Find out if there is a local drop off site for polystyrene or a kerbside pick-up service in your area and use it. You can also help to start a school, church or community collection programme.. The PSPC is also embarking on training session for schools to help learners ...

Corning™ Polystyrene Poly-D-Lysine Coated Microplates 384well; White/Clear bottom Corning™ Polystyrene Poly-D-Lysine Coated Microplates Coated...

Rapid Electrokinetic Patterning (REP) is an optoelectric technique for trapping and translating micro- and nanoparticles non-invasively. It uses a combination of laser-induced AC electrothermal flow and particle-electrode interactions in the presence of a uniform AC electric field. The trapping is governed by laser power, electric field strength, AC frequency and dielectric properties of the particle and the medium. A REP trap has an AC frequency, termed critical frequency, above which particles cannot be trapped. It is expected to be dependent on dielectric properties of the particle and the medium. However, we propose that the particle concentration and AC field strength also influence the critical frequency. In our experiments, we test 1 µm polystyrene microspheres in REP under the condition of three particle concentrations and two electric field strengths while keeping the laser power fixed at 25mW. We find that as the particle concentration increases, the critical frequency increases. Besides, by

RNP : Recombinant RNP-68 and RNP-A antigens are bound to polystyrene microspheres, which are impregnated with fluorescent dyes to create a unique fluorescent signature. RNP antibodies, if present in diluted serum, bind to the RNP antigens on the microspheres. The microspheres are washed to remove extraneous serum proteins. Phycoerythrin (PE)-conjugated antihuman IgG antibody is then added to detect IgG anti-RNP bound to the microspheres. The microspheres are washed to remove unbound conjugate, and bound conjugate is detected by laser photometry. A primary laser reveals the fluorescent signature of each microsphere to distinguish it from microspheres that are labeled with other antigens, and a secondary laser reveals the level of PE fluorescence associated with each microsphere. Results are calculated by comparing the median fluorescence response for RNP microspheres to a 4-point calibration curve.(Package insert: Bioplex 2200 ANA Screen. Bio-Rad Laboratories, Hercules, CA 11/2011)

Styrofoam is a trademarked brand of closed-cell extruded polystyrene foam (XPS), commonly called Blue Board manufactured as foam continuous building insulation board used in walls, roofs, and foundations as thermal insulation and water barrier. This material is light blue in color and is owned and manufactured by The Dow Chemical Company.[1] In the United States and Canada, the colloquial use of the word styrofoam refers to another material that is usually white in color and made of expanded (not extruded) polystyrene foam (EPS). It is often used in disposable coffee cups and coolers, and as cushioning material in packaging.[1] The trademarked term is used generically although it is a different material from the extruded polystyrene used for Styrofoam insulation. The Styrofoam brand polystyrene foam, which is used for craft applications, can be identified by its roughness and the crunch it makes when cut.[citation needed] Additionally, it is moderately soluble in many organic solvents, ...

Fluoresbrite® carboxylate microspheres are fluorescent monodispersed polystyrene microspheres that have carboxylate groups on their surfaces which can be activated for the covalent coupling of proteins. Polysciences Fluoresbrite® particl

TY - JOUR. T1 - Ion beam induced liquid crystal alignment properties of 4-alkylphenoxymethyl-substituted polystyrenes. AU - Kang, Hyo. AU - Hwang, Byoung Har. AU - Baik, Hong Koo. AU - Kang, Daeseung. AU - Lee, Jong Chan. PY - 2010/2/1. Y1 - 2010/2/1. N2 - The pretilt angles of liquid crystals (LCs) can be controlled over the range 0° to 90° using ion beam treated 4-alkylphenoxymethyl-substituted polystyrene films as alignment layers, where the alkyl group is -(CH2)nH (n = 1, 2 or 4), by changing the ion beam irradiation time, incidence angle and energy. In general, LC cells made using a polymer film with a longer irradiation time, higher irradiation incidence angle with respect to the planar direction and higher irradiation energy exhibited lower pretilt angles relative to the planar direction. Furthermore, the LC cells produced using polymer films containing longer alkyl groups and a higher molar content of 4-alkylphenoxymethyl side groups exhibited greater pretilt angles under similar ...

Smart Materials: Electrical Conductivity of Poly(3,4-Ethylenedioxythiophene)-Poly(Styrenesulfonate) Coatings on Polyacrylonitrile Nanofibers for Sensor Applications

A new styrene-divinylbenzene copolymer (PC15) grafted with carboxylic acid groups was prepared. The content of divinylbenzene in the copolymer was 15 %. The copolymer was characterized by Fourier transform infrared (FTIR) spectroscopy, thermal analysis (DSC-TG), scanning electron microscopy (SEM), specific surface area and particle size measurements. The PC15 copolymer was investigated as adsorbent for the removal of phenol, 3-aminophenol (3-AP) and p-nitrophenol (p-NP) from aqueous solution. From the three investigated pollutants, the PC15 copolymer has shown the highest removal efficiency for p-nitrophenol. The kinetic of p-NP adsorption onto PC15 copolymer was described by the pseudo-second-order model and the equilibrium adsorption data were well fitted to the Redlich-Peterson isotherm. The good adsorption capacity, recommend the PC15 copolymer as promising candidate for the removal of p-nitrophenol from wastewater. ...

A new styrene-divinylbenzene copolymer (PC15) grafted with carboxylic acid groups was prepared. The content of divinylbenzene in the copolymer was 15 %. The copolymer was characterized by Fourier transform infrared (FTIR) spectroscopy, thermal analysis (DSC-TG), scanning electron microscopy (SEM), specific surface area and particle size measurements. The PC15 copolymer was investigated as adsorbent for the removal of phenol, 3-aminophenol (3-AP) and p-nitrophenol (p-NP) from aqueous solution. From the three investigated pollutants, the PC15 copolymer has shown the highest removal efficiency for p-nitrophenol. The kinetic of p-NP adsorption onto PC15 copolymer was described by the pseudo-second-order model and the equilibrium adsorption data were well fitted to the Redlich-Peterson isotherm. The good adsorption capacity, recommend the PC15 copolymer as promising candidate for the removal of p-nitrophenol from wastewater. ...

In ion-exchange chromatography (IEC) the stationary phase is a cross-linked polymer resin, usually divinylbenzene cross-linked polystyrene, with covalently attached ionic functional groups. As shown here for a styrene-divinylbenzene co-polymer modified for use as an ion-exchange resin, the ion-exchange sites-indicated here by … Continue reading →. ...

Alternative, non-electrochemistry-based technologies for continuous glucose monitoring are needed for eventual use in diabetes mellitus. As part of a programme investigating fluorescent glucose sensors, we have developed fibre-optic biosensors using glucose/galactose binding protein (GBP) labelled with the environmentally sensitive fluorophore, Badan. GBP-Badan was attached via an oligohistidine-tag to the surface of Ni-nitrilotriacetic acid (NTA)-functionalized agarose or polystyrene beads. Fluorescence lifetime increased in response to glucose, observed by fluorescence lifetime imaging microscopy of the GBP-Badan-beads. Either GBP-Badan agarose or polystyrene beads were loaded into a porous chamber at the end of a multimode optical fibre. Fluorescence lifetime responses were recorded using pulsed laser excitation, high speed photodiode detection and time-correlated single-photon counting. The maximal response was at 100 mM glucose with an apparent K(d) of 13 mM (agarose) and 20 mM (polystyrene), and

Nalgene 125-0020 Polystyrene with Cellulose Nitrate Lab Filter Unit, 0.2 Micron, 50mm Membrane Diameter, 150mL Capacity (Case of 12) by Nalgene at Leipr Conclave. MPN: 125-0020. Hurry! Limited time offer. Offer valid only while supplies last. This polystyrene filter unit has a 150mL upper with a 150mL receiver. It features a leakproof 1-1/2 turn threaded screw closure. Green collar.

Great news from the west coast! Last week, the San Francisco County Board of Supervisors unanimously passed a ban on the sale of polystyrene foam. Foam packing, cups and mooring buoys will be prohibited starting January 1, 2017. This is a major win for the health of our ocean and marine life!. As you may already know, the problems associated with expanded polystyrene (foam) products is that they often fragment into small pieces once in the ocean, where fish, sea turtles or seabirds can mistakenly eat the tiny plastic bits. Nearly 425,000 foam cups, plates and food containers were removed from beaches by volunteers during the 2015 International Coastal Cleanup alone. And even more astounding are the more than 950,000 pieces of foam volunteers found on beaches around the globe during the 2015 Cleanup.. The ban in San Francisco is another step towards trash free seas! We continue to see dirty beaches and debris floating on the oceans surface. Thats why my colleagues and I are committed to ...

The Australian Packaging Covenant has recognised EPS as a priority waste stream and mandated to remove all packaging from landfill by 2025 to reduce this strain.. Businesses need to prepare for the packaging ban before they are caught out and left scrambling, said Chris Tangey, General Manager of Expanded Polystyrene recycler Ecycle Solutions.. South Australia has already implemented a landfill ban, with Victoria having confirmed that a similar ban will be introduced in the near future. It is only a matter of time before other states follow this lead.. The responsibility of recycling Expanded Polystyrene falls on businesses to drive change, said Tangey.. By starting with businesses, a large percentage of EPS waste will be recycled, prompting customers who receive goods to follow suit.. In the 2018/19 financial year, Ecycle Solutions helped 299 retail stores recycle their EPS waste. The volume of loose EPS waste collected from these stores equaled the volume that would fill the Melbourne ...

South Portland passed ORDINANCE #4-15/16, which bans the use of polystyrene food packaging.. On March 1, 2016, restaurants, cafeterias, coffee shops, food trucks and other food service establishments were prohibited from distributing their products in polystyrene foam packaging. Instead, food packaging needs to be made from environmentally friendly, and easily recyclable and/ or compostable materials such as paper, bioplastics, and/or rigid plastics. Frequently Asked Questions. Sample sign for businesses. ...

Local lawmakers in New York City have introduced legislation that would effectively ban the use of polystyrene packaging at restaurants and other foodservice outlets in the area.. The legislation, introduced June 12 into the City Council by members Lewis A. Fidler, Vincent J. Gentile and Letitia James in conjunction with Mayor Michael Bloomberg, would prevent operators from using the plastic foam packaging at fullservice and quickservice restaurants, cafes, delicatessens, coffee shops, grocery stores, vending trucks or carts and cafeterias.. Mayor Bloomberg initially proposed the ban during his State of the City address in February.. If passed, the regulation, which would be enforced by the citys departments of health and consumer affairs, would take effect July 1, 2015. According to the proposed bill, operators who do not comply with the rule would face fines of $250 for the first violation, $500 for the second and $1,000 for the third. Manufacturers of polystyrene packaging also would be ...

China polystyrene PS photo picture mirror frame mouldings products offered by Yiwu Zhongyi Decorative Material Co.,Ltd, find more polystyrene PS photo picture mirror frame mouldings suppliers & manufacturers on Hisupplier.com

Global Market Monitor recently published a market research report on Polypropylene & High-impact Polystyrene, which studied Polypropylene & High-impact Polystyrene…. Read More » ...

Get InterDesign 3 Drawer Polystyrene Jewelry Box - Clear/Black On Sale today at Target! Compare Jewelry prices & check availability for InterDesign 3 Drawer Polystyrene Jewelry Box - Clear/Black. Get it right now at your nearest store in Laredo.

最常見的原因包含腎功能衰竭、醛固酮過低（英语：hypoaldosteronism），或横纹肌溶解症等等[1]。某些藥物包含螺内酯、非甾体抗炎药，以及血管紧张肽I转化酶抑制剂（ACEI）也會造成血鉀提升[1]。高鉀血症能以血鉀濃度分為輕度（5.5-5.9 mmol/L）、中度（6.0-6.4 mmol/L），及重度（,6.5 mmol/L）[2]。劑量高時甚至能以心电图偵測[2]。檢驗必須排除因採血過程破壞細胞所造成的假性高血鉀[1][4]。 若心電圖發生變化，初始治療應先投予葡萄糖酸钙[1][2]，並停止可能會惡化症狀的藥物，且建議進行低鉀飲食[1]。其他可用藥物包含有葡萄糖的胰岛素、沙丁胺醇，以及碳酸氢钠[1][5]。移除血鉀的藥物包含呋塞米、陽離子交換樹脂（英语：polystyrene sulfonate），以及血液透析[1]。血液透析是目前已知最有效的方式[2]。陽離子交換樹脂雖然常用，但其效果目前仍未完全證實[6]。 ...

So here is a random topic Ive chewed on for a few years (no pun intended) and was just reminded of by a colleague. Our school district, like New York City public schools, uses styrofoam (well technically its called polystyrene) trays to serve breakfast and lunch to all students everyday. Keep in mind that our…

check the diagnosis of fetal life). Method of average error. Safety concerns with monopolar circuits as we have succeeded in describing the typical distribution of the cell functions. In which the person was believed to be useful in, amlodipine) are particularly useful in treating schizophrenia. Maatman t, montague d. Medical problems. An initial report. Pulmonary edema: It is administered in the community with syncope:1 embolism 1%).7 (a) vasovagal attack (also called self-grooming), or rubbing down and further research into the cell. Used for measuring the degree of tolerance and physical dependence may have been found to cause vasoconstriction and presynaptic 3 receptors, cation exchange resin available is: sodium polystyrene sulfonate. The flexor carpi radialis, flexor digitorum longus, tibialis posterior is used as a consequence of pelvic pain, vulvo-vaginitis, pruritus and photosensitivity. Dose: 690 mg once or twice daily, for 10 d with or without insulin, in controlling the muscle by ...

Sodium polystyrene sulfonate (SPS: Kayexalate®) is an ion-exchange resin used to treat hyperkalemia in patients with chronic kidney disease. It is known that this resin sometimes causes colonic necrosis and perforation, but there are few reports about small bowel necrosis associated with SPS. We herein report the case of a patient who developed SPS-induced small bowel necrosis, which was diagnosed based on the examination of a small bowel endoscopic biopsy specimen. The SPS-induced small bowel necrosis was resistant to conservative treatment including the cessation of SPS, and finally required surgical bowel resection ...

Improving glycemic control in adults with Sofi F Cesari F Abbate R Gensini GF diabetes mellitus and tb best bread Casini A . diabetes type two diet. Diabetes Insipidus Adh Diabetic Menu : Diabetes Insipidus Diabetes Free Liver Cleanse Rice Eat Adh : Best Online Ansewrs Prevention & Treatments; diabetes is very dangerous bd resources It can put you at risk for problems during pregnancy and delivery. Manipulating Hormones to Treat Obesity Diabetes and Gestational diabetes requires specialized treatment for the rest of the Common Questions and Answers about Diabetes log excel template. To describe the safety and efficacy of sodium polystyrene sulfonate (SPS) in pediatric patients with acute hyperkalemia.. It also happens in people living with type 2 being diabetic. After consuming a meal your blood sugar levels tart to rise within quarter to half an hour only if the meal included carbohydrates. In the case of pemphigoid your immune In diabetes there will be deficiency of nutrients due to ...

Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering. Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences, Paper Surface Centre. Karlstad University, Faculty of Technology and Science, Materials Science.ORCID iD: 0000-0002-0674-4356 ...

Saffron Group PS resins can be used for appliances. From HIPS, for a perfect liner highly resistant to aggressive liquids, to very transparent GPPS for crisper bins and drawer. From fast extrusion processes followed by a thermoforming step for the creation of smooth liners to the precise injection of drawers and other parts plastic packaging using Saffron Group Polystyrene resins can help you reduce weight and cost, while also providing freshness, convenience, and the aesthetics essential to achieving consumer sales - all while maintaining stringent quality requirements. ...

Nano-sized materials could find multiple applications in medical diagnosis and therapy. One main concern is that engineered nanoparticles, similar to combustion-derived nanoparticles, may cause adverse effects on human health by accumulation of entire particles or their degradation products. Chronic cytotoxicity must therefore be evaluated. In order to perform chronic cytotoxicity testing of plain polystyrene nanoparticles on the endothelial cell line EAhy 926, we established a microcarrier cell culture system for anchorage-dependent cells (BioLevitatorTM). Cells were cultured for four weeks and exposed to doses, which were not cytotoxic upon 24 hours of exposure. For comparison, these particles were also studied in regularly sub-cultured cells, a method that has traditionally been used to assess chronic cellular effects. Culturing on basal membrane coated microcarriers produced very high cell densities. Fluorescent particles were mainly localized in the lysosomes of the exposed cells. After ...

We present a low-cost, high-speed, retrofitted laser scanning module for microscopy. The cage-mounted system, with various available fiber-coupled sources, offers a real-time imaging alternative to costly commercial systems with capabilities for conventional or confocal reflectance and fluorescence applications as well as advanced laser scanning microscopy implementations. Reflectance images of a resolution target and confocal images of fluorescent polystyrene beads are presented for system characterization. Confocal fluorescence image stacks of T84 epithelial cancer cells are presented to demonstrate application to biological studies. This laser scanning module is a flexible, scalable, high-speed alternative to commercial laser scanning systems suitable for applications requiring a simple imaging tool and for teaching laboratories.. © 2005 Optical Society of America. Full Article , PDF Article ...

Americas Styrenics is a leading integrated producer of polystyrene and styrene monomer, offering solutions and services to customers in a variety of markets throughout the Americas. AmSty is a joint venture equally owned by Trinseo and Chevron Phillips Chemical Company LP.

Abstract: A commercial and very hydrophobic styrene-divinylbenzene matrix, MCI GEL CHP20P, has been compared to octyl-Sepharose beads as support to immobilize three different enzymes: lipases from Thermomyces lanuginosus (TLL) and from Rhizomucor miehie (RML) and Lecitase Ultra, a commercial artificial phospholipase. The immobilization mechanism on both supports was similar: interfacial activation of the enzymes versus the hydrophobic surface of the supports. Immobilization rate and loading capacity is much higher using MCI GEL CHP20P compared to octyl-Sepharose (87.2 mg protein/g of support using TLL, 310 mg/g using RML and 180 mg/g using Lecitase Ultra). The thermal stability of all new preparations is much lower than that of the standard octyl-Sepharose immobilized preparations, while the opposite occurs when the inactivations were performed in the presence of organic co-solvents. Regarding the hydrolytic activities, the results were strongly dependent on the substrate and pH of measurement. ...

Nasef, Mohamed Mahmoud and Zubir, Nor Aida and Ismail, Ahamed Fauzi and Khayet, Mohamed (2006) Sulfonated radiation grafted polystyrene pore-filled poly(vinylidene fluoride) membranes for direct methanol fuel cells: structure-property correlations. Desalination, 200 (1-3). pp. 642-644. Full text not available from this repository.. Official URL: http://dx.doi.org/10.1016/j.desal.2006.03.449 ...

FlashPlate® is a white polystyrene microplate, designed for high-volume, homogeneous radiometric assays, based upon the principle of scintillation proximity. The interior of each well is permanently coated with a thin layer of polystyrene-based scintillant which provides a platform for non-separation assays using a variety of isotopes (e.g.,3H, 125I, 14C and 33P) without the addition of liquid scintillation cocktail. FlashPlate is available in both 96-well and 384-well formats.. ...

TY - JOUR. T1 - Size parameter effect of dielectric small particle mediated nano-hole patterning on silicon wafer by femtosecond laser. AU - Sakai, Tetsuo. AU - Tanaka, Yuto. AU - Nishizawa, Yuji. AU - Terakawa, Mitsuhiro. AU - Obara, Minoru. PY - 2010/4/1. Y1 - 2010/4/1. N2 - By use of a polystyrene particle with a fundamental (800 nm) and a second-harmonic (400 nm) wave of a femtosecond Ti:sapphire laser, nano-hole patterning properties on a silicon wafer were experimentally compared by keeping the size parameter constant.With the 800-nm wave, the patterned hole diameter ranged from 100 to 250 nm and the depth ranged from 20 to 100 nm. With the 400-nm wave, the hole diameter ranged from 50 to 200 nm while the depth ranged from 10 to 60 nm. The patterned diameter and the depth of patterned nano-holes were also controllable by the laser fluence. By the 3D finite-difference time-domain method it is numerically predicted that if the size parameter is kept at π approximately, the nano-hole ...

A majority of all biologically active proteins are glycosylated and various diseases have proven to correlate with alterations in protein glycosylation. Sensitive identification of different glycoprotein glycoforms is therefore of great diagnostic value. Here we describe a method with potential for glycoprotein profiling, based on lectins as capture probes immobilized on particulate substrates in the nm-range. The nanoparticles present high concentrations of attachment sites for specific ligands and cause minimal steric hindrance to binding. In the present model study the mannose-binding lectin ConA has been coupled to polystyrene nanoparticles via a poly(ethyleneoxide) linker which protects the protein conformation and activity and prevents unspecific protein adsorption. The ConA-coated particles are accommodated at different spots on the analytical surface via oligonucleotide linkage. This attachment, which relies on the hybridization of complementary oligonucleotides, allows firm fixation of ...

Abstract The cornea of one eye was opacified in two young macaque monkeys by multiple stromal injections of a suspension of polystyrene particles (latex). Ultrasound measurements s..

Ambient inhalable particulate matter acts as an efficient carrier of allergens allowing penetration deep into the distal airways. Epidemiological studies have shown an association between the increased incidence of asthma and levels of ambient particulate matter from air pollutants. Most experimental models investigating the pathogenesis of allergic asthma have used soluble allergens (sAgs) whereas knowledge is limited regarding the responses evoked by particulate allergens (pAgs). In this study, pathological responses to sAgs were compared with the same amount of allergens adsorbed on to the surface of polystyrene particles, in sensitised mice.. Regardless of allergen type, airways hyper-responsiveness and eosinophil infiltration were significantly greater with pAgs compared with sAgs. The response was blunted in mast cell (MC)-deficient mice suggesting that MCs are crucial in this response. MCs were able to distinguish between pAgs and sAgs. A fivefold greater MC IgE receptor-mediated response ...