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Development of plastic scintillation detector (PSD) systems for dosimetry has been evolving for two decades now. The subject area has been a topic of a keen research interest that has generated lot of publications lately. PSD systems are being introduced in the market place. Numerous PSD systems for External Beam Radiation Therapy and Brachytherapy have been proposed, most times differentiating from the original systems by slight changes in one or more components, such as the photodetector. However, few major technological and engineering innovations have enabled this new technology to be embraced by the community which helped launching these systems for commercialization (Standard Imaging, Radiadyne, etc.). Scintillation materials (plastic, scintillating fibers and liquid) have many properties that make them ideal for dosimetry including water equivalence and energy independence for MV photons, linearity with dose, dose rate independence, high spatial resolution and nanosecond fast response time.
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Graphene laminate - multilayer stacks of graphene layers piled on top of each other - is a promising material for thermal coating applications. Researchers have investigated thermal conductivity of graphene laminate films deposited on PET substrates. They found that the compressed laminates have higher thermal conductivity for the same average flake size owing to better flake alignment. This shows a possibility of up to 600-times enhancement of the thermal conductivity of plastic materials by coating them with the thin graphene laminate films.
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As a leader in domestic plastics industry, Kingfa Sci & Tech Co., Ltd. mainly produces modified plastics, specialty engineering plastics, completely biodegradable plastics, carbon fiber and composite materials, of which, the 30 kt/a PBS and polybutylene succinate adipate (PBSA) has been put into operation in Zhuhai in 2011, the Phase II 90 kt/a PBSA expansion project will be launched. Meanwhile, Kingfa is also increasing intensity of downstream demand expansion. The company has signed biodegradable plastic mulch demonstrative application agreements with Xinjiang Production and Construction Corps, Guizhou, Shandong and other provinces and cities in early 2014 ...
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FANTASY PLUS blistering machine, with its practical and compact shape, is suited for the production of industrial quality blisters for clinical trials, stability testing, marketing samples and small batches to carry out in R&D Laboratories or pharmaceutical plants. This innovative blister machine, equipped with PLC and printer, can produce from pre-cut foils high quality blisters both in plastic material with aluminum or different covering, and ALU-ALU (Tropical). Operations such as thermoforming of plastic material, cold forming, sealing /coding/perforation and blister die cutting are carried out on the same machine due to a rapid and simple change of tools and without extra keys or experienced staff. The standard output is 4 blisters mm100x60 per stroke in plastic material with aluminum covering, and for ALU-ALU its 1 blister per cycle with max dimension mm 155×80. On demand, tailor-made projects can be developed according to the customers real needs, manufacturing moulds with different ...
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Living four days without consuming plastics hasnt been such a challenge yet; nevertheless it became more fun. As a quick reference to my last blog post, I aim to reduce my plastic use significantly for 30 days and reuse the products that I already have. My main motivation to do this is to help drawing attention to the Great Pacific Garbage Patch and other marine debris around the world.. Plastics can live longer than human beings. It takes 100 years for a plastic bottle to degrade in a marine environment. Given that plastics were invented only in the 19th century, almost all of the plastic content that was produced still exists somewhere in the world.. It is indeed very easy to live without plastic bags and plastic bottles. I bring my own shopping bag when I go grocery shopping and I reuse my old bottles and try to avoid plastic bottles in any kind. It was hard to give up some of beverages that I like. However, I can find access to drinking water easily in many developed cities. Hence, glass ...
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0033]Processes for production of TPU are well known. By way of example, the thermoplastic polyurethanes can be produced via reaction of (a) isocyanates with (b) compounds reactive toward isocyanates and having a molar mass of from 500 g/mol to 10 000 g/mol and, if appropriate, (c) chain extenders having a molar mass of from 50 g/mol to 499 g/mol, if appropriate in the presence of (d) catalysts, and/or of (e) conventional auxiliaries and/or additives. The inventive plasticizers (i) can be added either to the compounds (b) reactive toward isocyanates prior to or during the production of the TPUs or else to the finished TPU, for example to the molten or softened TPU. The thermoplastic polyurethane can be processed thermoplastically, without loss of the action of the inventive plasticizers. The starting components and processes for production of the preferred TPUs will be described below. The components (a), (b), (c), and also, if appropriate, (d) and/or (e) usually used in the production of the ...
The proposal, aiming in the long term to reduce plastic, implies the creation of biodegradable and ecological materials based on Geen Cemistry. Apart from this, it allows on-site analysis which is simple and fast and in most cases doesn´t require external energy sources. Biodegradable materials will probably be the definitive substitutes of plastic researcher at the Department of Analytical Chemistry at UV and one of the authors of the article, Neus Martínez Jornet, highlights.. The biosensors are devices which incorporate natural, biological materials (enzymes, microorganisms, anti-bodies, proteins etc.) into non-biodegradable frames and used to measure biological or chemical parameters. Some of the things that can be thus measured are levels of glucose and cholesterol or nitrares in blood, as well as phosphates and amonnium in water.. Most of this kind of devices are made from non-degradable materials, and their use is rising. Once they are used up, they create a great quantity of residue ...
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Phthalate esters (PEs) belong to a class of organic compounds used as plasticisers in plastic materials such as polyvinyl chloride (PVC), polypropylene (PP), polyethylene terephthalate (PET) and so on, including those used in the food packaging industry. Phthalate plasticisers are not chemically bound to plastic materials and hence, migrate into items such as foodstuffs they house. The study aimed at investigating the prevalence of selected phthalate esters from plastic wrappers into food as well as the presence of food and/or pathogenic microorganisms. Plastic-wrapped cheese, vienna sausages and polony samples purchased from commercial stores in the four regions of Pretoria (Tswane), South Africa, were analysed for the presence of plasticisers; di-2-ethylhexyl adipate (DEHA), di-n-butyl phthalate (DnBP), benzyl-butyl phthalate (BBP), di-butyl phthalate (DBP) and dimethyl phthalate (DMP). Soxhlet extraction using hexane with florisil column cleanup was carried out. Analysis of PEs was by Gas ...
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The word Hard is used to describe only one characteristic, the stiffness, of the plastic material these lenses are made from. The word Rigid is used in exactly the same way.. A separate issue is the Gas Permeability of the material. The gases we are talking about are Carbon Dioxide and Oxygen - both of critical importance to the healthy functioning of the cornea. Ideally Carbon Dioxide molecules leaving the cornea would pass freely (permeate) through the contact lens and escape to the air: Oxygen from the air would pass freely (permeate) in the opposite direction to bring fresh oxygen to the cornea - keeping it clear.. Traditional Hard / Rigid plastic material did not allow any gas to pass through at all. For more than 40 years however we have used Rigid lenses of increasingly excellent Gas Permeability. Hence Rigid Gas Permeable (RGP) lenses. The surface of these lenses is easy to clean and not prone to contamination, typically lasting about 3 years - sometimes more, before being ...
In recent years, colloidal quantum dots (QDs) have strongly attracted attention in the field of lighting and display technologies [1]. These are crystals from inorganic semiconductors in the size of a few nanometers which leads to quantum effects which dictate their optical and electronical behavior. The smaller these crystals get, the more confined are the charge carriers which increases the gap between the energy bands of the QDs. This means the wavelength of the emitted light of the QDs can be tuned by their size. Other advantages are the high quantum efficiency, small full width at half maximum (FWHM), chemical stability, and the possibility to process from a solution.. These advantages are used in light-emitting diodes based on QDs (QD-LEDs) which give them a few benefits over their organic counterparts. It is possible to produce QD-LEDs in nearly every wavelength of the visible light with the same material by using different sized QDs as the emitting layer and the FWHM is much smaller (30 ...
February 24, 2005. Agricultural Research Service (ARS) scientists who have developed a method to turn chicken feathers into plastic products are continuing to bring the technology closer to the marketplace. ARS chemist Walter Schmidt developed the technology to clean feathers and separate them into chopped fibers and quill pieces. Now Schmidt and fellow ARS chemist Justin Barone have developed and applied for a patent for a process to convert cleaned and chopped feather material into plastic products on a laboratory scale. Schmidt and Barone work in ARS Environmental Quality Laboratory in Beltsville, Md. According to Barone, the material is made on traditional plastics processing equipment using chopped chicken feathers and other easily obtainable, naturally derived materials. The feather-derived plastic can be molded just like any other plastic and has properties very similar to commodity plastics such as polyethylene and polypropylene. This makes the feather-derived plastic a unique material ...
Natural News) The future looks brighter as researchers have discovered a way to create plastic thats not harmful to nature. Scientists from the Centre of Sustainable Chemical Technologies (CSCT) at the University of Bath has successfully created a plastic material that doesnt use highly toxic substances that could pose problems not only to the environment but also to our health. This biodegradable plastic will be made from sugar and carbon dioxide instead of crude oil and bisphenol-A (BPA) - a material banned from use in baby bottles - and phosgene, a highly toxic chemical that was even used as a weapon in World War I.. With an ever-growing population, there is an increasing demand for plastics. This new plastic is a renewable alternative to fossil-fuel based polymers, potentially inexpensive, and, because it is biodegradable, will not contribute to growing ocean and landfill waste, said Dr. Antoine Buchard, Whorrod Research Fellow in the Universitys Department of Chemistry. Our process ...
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Carien van Aubel. Conservation Science intern, University of Amsterdam. Collections with objects dating from the late-nineteenth-century onwards often include a variety of plastics. As there are numerous different types of plastics it would be hoped that specific identification would be stated in the records but it is not easy for those not experienced with plastics to identify them. For unambiguous identification it is necessary to carry out technical analysis, mostly time-consuming, costly and not always accessible for every collection. Plastics that are easy to identify often already show degradation signs, like a specific smell, crazing or discolouration. By knowing the nature of materials in a collection, better care can be taken of objects.. The Museum of Design in Plastics (MoDiP) at the Arts University Bournemouth (AUB) developed a flowchart to identify plastics for curators and others with little knowledge of plastic materials.1 It was written in collaboration with experts from ...
We showed previously that confluent ARPE-19 cells grown on different matrices had different transcriptional profiles from native RPE, and that cells grown on plastic had the closest transcriptome to native RPE.2 To improve the transcriptional proximity of ARPE-19 cells grown on plastic to native RPE, we varied the culture conditions and evaluated global expression trends, a more informative benchmark than individual gene expression. With this end point, CSW and DSW cells were most similar to native RPE. While each culture condition preserved the expression of the most abundant genes, significant transcriptional differences exist between native and cultured cells including the number of genes on the array that were expressed and not expressed, the number and function of differentially expressed genes, and the number of expressed low abundance genes. Our results suggest that the global expression profiles can be improved by varying the culture conditions, but significant widespread differences ...
Plastics that decompose in the nature by the action of microorganisms are generally referred as biodegradable plastics. These plastics are divided into different categories such as bio-based and petro-based biodegradable plastics.
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Plastic is one of the most environmentally unfriendly materials, because it takes so long for this plastic to completely break down naturally.. Plastic materials are not stored for long when compared to metals. They are easy and often thrown away when they are not used anymore.. Much effort has been made to reduce plastic waste to find ways to destroy plastic faster.. Reported by detikINET from Ubergizmo the good news is that Singapore researchers at Nanyang Technological University (NTU) have found a possible alternative to plastic substitutes using shells and fruits.. This arises when researchers try to make chitin, a food thickener or stabilizer and also those used in antimicrobial food packaging.. A large amount of shrimp waste has sparked industrial interest because it is an abundant source of chitin. However, there are problems in extraction methods that are unsustainable and dangerous for the environment, said Professor William Chen, Chief Researcher.. Our new method of taking ...
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Microbial degradation: The primary purpose of biodegradable plastics is to replace traditional plastics that persist in landfills and harm the environment. Therefore, the ability of microorganisms to break down these plastics is an incredible environmental advantage. Microbial degradation is accomplished by 3 steps: colonization of the plastic surface, hydrolysis, and mineralization. First, microorganisms populate the exposed plastics. Next, the bacteria secrete enzymes that bind to the carbon source or polymer substrates and then split the hydrocarbon bonds. The process results in the production of H2O and CO2. Despite the release of CO2 into the environment, biodegradable plastics leave a smaller footprint than petroleum-based plastics that accumulate in landfills and cause heavy pollution, which is why they are explored as alternatives to traditional plastics.[19]. Municipal solid waste: According to a 2010 report of the United States Environmental Protection Agency (EPA) the US had 31 ...
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The present invention is a tape product suitable for use in the protection of semiconductor devices from alpha-particles. The product comprises a heat resistant support film, a pressure sensitive adhesive layer on one side of the support film, a least one alpha-particle protector member formed of a plastic material capable of protecting the semiconductor device releasably supported on the pressure sensitive adhesive, and a layer of heat resistant adhesive bonded to the plastic material on its side lying opposite to the side bonded to the pressure sensitive adhesive. Preferably, a primer layer lies between the heat resistant support film on the pressure sensitive adhesive to insure that clean removal of the support film and pressure sensitive adhesive from the surface of the alpha-particle protector member. In order to aid in this removal the surface of the alpha-particle protector member facing the pressure sensitive layer is also coated with a release coating. The product is used by bonding the heat
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To investigate the carcinogenicity of styrene by reanalysing data from a previous international cohort study of workers in the reinforced plastics industry. Methods Mortality from cancers of prior interest was analysed with more detailed consideration of exposure-response relations and an updated classification of leukaemias and lymphomas in data from a previous international cohort study of 37 021 reinforced plastics workers exposed to airborne styrene. Results Increased mortality from non-Hodgkins lymphoma (NHL) was associated with the mean level of exposure to styrene in air (relative risk (RR) 2.31, 95% CI 1.29 to 4.12 per 100 ppm), but not with cumulative styrene exposure. Similar associations with mean exposure were observed for the oesophagus (RR 2.44, 95% CI 1.11 to 5.36 per 100 ppm) and pancreas (RR 1.89, 95% CI 1.17 to 3.09). Oesophageal cancer mortality was also associated with cumulative styrene exposure lagged 20 years (RR 1.16, 95% CI 1.03 to 1.31). No other cancer, including lung ...
Approved containers. Approved residential solid waste containers shall consist of metal or plastic containers with tight-fitting covers and suitable handles, commonly referred to as garbage cans, or plastic garbage bags which are closed by means of a tie. Approved containers shall be a maximum of 30 gallons in size. Containers, including contents, shall not exceed in weight that which one person can safely lift (50 pounds). Metal garbage cans shall be of sufficient thickness to resist denting during normal handling by collection crews. Plastic garbage cans shall consist of plastic material not damaged by freezing and not susceptible to melting. They shall be capable of being handled during hot and cold weather without damage during normal handling by collection crews. Plastic bags shall be of sufficient strength to allow lifting and loading of contents without tearing. Each unit will be allowed to dispose of rubbish (not garbage) in small cardboard boxes (no more than nine cubic feet in ...
Plastic bottles are not sustainable, no matter what weve been told. Using vast quantities of fossil fuels and water, these bottles are manufactured, filled, and shipped around the globe. (Not a good carbon footprint!) Neither are bottles biodegradable in any meaningful way: what you drink in a few minutes can stick around for a thousand years. Even with recycling efforts, 6 out of 7 plastic bottles consumed in the U.S. are downcycled-sent somewhere out of sight and out of mind where, for the next millennia, toxins from degrading plastic containers can leach into watersheds and soil. Thats just not something we need to give to global neighbors and future generations. Most bottled water is glorified tap water at 10,000 times the cost. The label on your bottled water may depict a peaceful mountain stream, but that doesnt mean the water inside is pure and pristine. Only some bottled water comes from springs or groundwater sources. It turns out that approximately 25% of bottled water is sourced ...
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Disclosed is an intrauterine device contraceptive to avoid pregnancy. The device comprises a vector and contraceptor, said vector consisting of a vertical stem having two horizontal arms, the arm at the end of said vertical stem being longer than the second arm, said vertical stem being twisted by a copper wire having a surface area of above 200 square millimeters. The vertical stem is made from a plastic material, generally polyethylene. The present intrauterine device contraceptive has the advantage of a complete reduction of the expulsion in view of its new particular shape.
Some plastic products contain a variety of additives, some of which can be toxic. For example, plasticizers like adipates and phthalates are often added to brittle plastics like polyvinyl chloride to make them pliable enough for use in food packaging, toys, and many other items. Traces of these compounds can leach out of the product. Owing to concerns over the effects of such leachates, the European Union has restricted the use of DEHP (di-2-ethylhexyl phthalate)and other phthalates in some applications. Some compounds leaching from polystyrene food containers have been proposed to interfere with hormone functions and are suspected human carcinogens ...
Kimberly-Clark Corporation, 2100 Winchester Road, Neenah, WI 54956, U.S.A.. Abstract. Starch, such as Cassava starch, is an abundant, low-cost feedstock which has been used in a number of relatively low-value industrial applications such as paper sizing materials. Use of starch for thermoplastic applications is of great business interest to replace petroleum-derived plastic materials which are several times more expensive than starch. Due to the lack of thermoplasticity of starch, it had to be modified into thermoplastic starch, i.e. TPS. However, TPS also lacks the required mechanical properties for packaging applications. In this presentation, a systematic approach was demonstrated to create effective polymer blends to overcome the inherent weakness of pure TPS, the polymer films made from thermoplastic starch and biodegradable modifying polymers were developed. The films contain multiple bio-based and biodegradable polymer components including thermoplastic starch, bio-based polylactic acid ...
When using disposable food containers, the public and the trade should minimise the time for the food being in contact with the container, and hence reduce the risk of migration of toxic chemicals from the container to the food. If the container is deformed after holding hot food, stop using the container and discard the food. When using a microwave oven to reheat take-away meals, ensure that the container is suitable for use in microwave ovens. For example, EPS containers are not microwaveable. If in doubt, reheat the food in a microwaveable container. Generally speaking, disposable plastic containers that are microwaveable should not be reheated in microwave ovens more than once.. To help the food trade to select and use appropriate disposable containers, the CFS has published guidelines on the use of disposable plastic containers. According to the guidelines, the trade should adopt the following measures when using disposable plastic containers for take-away meals: When choosing disposable ...
Aluminum Plastic Tube Market Report by Material, Application, and Geography - Global Forecast to 2021 is a professional and in-depth research report on the worlds major regional market conditions, focusing on the main regions (North America, Europe and Asia-Pacific) and the main countries (United States, Germany, United Kingdom, Japan, South Korea and China).
This paper reports the fabrication and testing of two configurations of optical sensor systems based on Surface Plasmon Resonance (SPR) at the interface of a liquid sample and sandwiched structures realized starting from the exposed core of a Plastic Optical Fiber (POF). The proposed geometries have proven to be suitable for measuring the refractive indexes of liquids whose refractive index falls around 1.35. Furthermore, the proposed sensing head, being low cost and relatively easy to realize, may be very attractive for biosensor implementation.
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Desktop Metal and Markforged were inspired by a different manufacturing method called metal injection molding. In this system, the metal powder is mixed with plastic binders. The mixture is heated and injected into molds that form it into complex shapes. The part is then baked in high-temperature ovens that burn off the plastic material and turn the object into solid metal.. Metal 3-D printing takes the same general approach, but without the expensive molds. Instead, engineers can design a complex part using standard computer-aided design programs from companies like Autodesk. The digital file goes straight to the printer.. The Desktop Metal and Markforged machines squirt the metal powder and binder through tiny nozzles. Each object is built up layer by layer, hour by hour. When the print job is done, the object is placed in the same kind of oven used in metal injection molding, producing solid metal parts.. Ironically, Desktop Metals printers are partly made out of injection-molded plastic. ...
High Impact Polystyrene Sheet (HIPS). Styrene is a low cost plastic material that is easy to machine and fabricate. Styrene is often specified for low strength structural applications when impact resistance, machinability, and low cost are required. It is frequently used machining pre-production prototypes since it has excellent dimensional stability and is easy to fabricate, paint and glue. Natural (translucent white) Styrene is FDA compliant for use in food processing applications. The following physical property information is based on typical values of the base high impact polystyrene resin.. Styrene offers a consistent, easily printed matte surface for either one or two sided printing applications. This polystyrene product, available in sheet or roll stock form, is especially suitable for Lithographic or Flexographic printing of displays, POP graphics, signs, tags and cards.. ...
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Nitrocellulose (also known as cellulose nitrate, flash paper, flash cotton, guncotton, and flash string) is a highly flammable compound formed by nitrating cellulose through exposure to nitric acid or another powerful nitrating agent. When used as a propellant or low-order explosive, it was originally known as guncotton. Partially nitrated cellulose has found uses as a plastic film and in inks and wood coatings. In 1862 the first man-made plastic, nitrocellulose (branded Parkesine), was created by Alexander Parkes from cellulose treated with nitric acid and a solvent. In 1868, American inventor John Wesley Hyatt developed a plastic material he named Celluloid, improving on Parkes invention by plasticizing the nitrocellulose with camphor so that it could be processed into finished form and used as a photographic film. Celluloid was used by Kodak, and other suppliers, from the late 1880s as a film base in photography, X-ray films, and motion picture films, and was known as nitrate film. After ...
The Formosa Plastics Propylene Explosion was a propylene release and explosion that occurred on October 6, 2005, in the Olefins II Unit at the Formosa Plastics plant in Point Comfort, Texas, United States. The subsequent fire burned for five days. The Point Comfort facility is the largest Formosa Plastics plant in the United States. Opened in 1983, it covers 1,800 acres (7.3 km²) and employs 1,400 full-time employees and 400 contract workers. Among the employees are 120 personnel making up the plants Emergency Response Team (ERT) whose members are trained in hazardous material emergencies and fire fighting. There are 17 operating units on the plant producing a variety of petroleum and plastic products. The Olefins II Unit uses furnaces to convert naphtha or natural gas into a hydrocarbon mixture containing methane, ethane, ethylene, propylene, and propane. Distillation columns separate the hydrocarbon mix. Some of the gases (such as propylene) are liquified and sent to storage while others are ...
Nitrile Gloves - Medical Gloves - Medical Supply Group- nitrile gloves 4.0 mil nitrile plastic sheeting ,Nitrile Gloves. Sort By: Products per page: Viewing Page 1 of 2: 1 2 , ,, Nitrile Exam Gloves. Our Price: $22.99. In stock. Confiderm® 3.5 Nitrile Exam Glove Large (6978C) Our Price: $13.99. Out of stock. Confiderm® 3.5 Nitrile Exam Glove Small (6974C) Our Price: $13.99. Out of stock ...PRODUCT SPECIFICATION Nitrile Powderfree Examination ...May 31, 2011·Nitrile Powderfree Examination Gloves (Textured) SECTION I: PRODUCT DESCRIPTION 1. 1 Type Nitrile Examination Glove, Powderfree, Non-sterile 1. 2 Material 100% Synthetic Nitrile Latex 1. 3 Color ( Pigment ) o Off white o Blue o Black 1. 4 Design and Feature Ambidextrous, textured, beaded cuff 1. 5 Powder No powder lubricant ...
The depletion of fossil resources and the environmental impact of petroleum-based plastic materials have driven a strong global interest in renewable biobased polymers and composites derived from natural resources. Since biodegradable polymers have their own drawbacks, it is often combined as a composite with other fillers. Polypropylene (PP)/Poly(3-hydroxybutyrate) (PHB) composite films and lignocresol (LC)/PP/PHB composite films were cast by blending methods. This study investigated the effects of the amounts of added PP fiber and LC on the mechanical and thermal properties in the corresponding composite films. The overall properties of LC/PP/PHB composite films were best with 8 wt.% PP fiber content and 3 wt.% LC content. The tensile strength (13.00 MPa) was up to 1.25 times that of the original PHB film (10.44 MPa), and the thermal properties of the composite films were improved by adding 3 wt.% LC. Thermogravimetry (TG) analysis indicated that the onset temperature (382.0 °C) rose by 50.7 ...
In a re-usable coupling means for securing flexible disposable bags for collecting intestinal wastes from ostomies and which consists (a) of a retainer plate of a comparatively stiff plastic material having an opening to lie around the stoma and having a gas passage duct communicating with a deodorizing filter, and (b) a flexible, sealing adhesive member for releasable adherence of the retainer plate to the skin and indirectly secured to the rear of the retainer plate, the gas passage duct is arranged in an annular bead protruding from the front of the retainer plate and communicates via gas inlet openings with the interior of the bag and via the filter and gas outlet openings in the coupling means with the outer world. The disposable bag may be releasably affixed to the holding means by the aid of a pressure-sensitive adhesive or by the aid of ring coupling systems known per se. This coupling means is particularly well suited for use in ostomy bag systems of the kind consisting of a wc-flushable inner
TY - JOUR. T1 - Contrast-free microscopic assessment of glioblastoma bioposy specimens prior to biobanking. AU - Georges, Joseph. AU - Zehri, Aqib. AU - Carlson, Elizabeth. AU - Nichols, Joshua. AU - Mooney, Michael A.. AU - Martirosyan, Nikolay L.. AU - Ghaffari, Layla. AU - Kalani, M. Yashar S.. AU - Eschbacher, Jennifer. AU - Feuerstein, Burt. AU - Anderson, Trent. AU - Preul, Mark C.. AU - Van Keuren-Jensen, Kendall. AU - Nakaji, Peter. PY - 2014/2/26. Y1 - 2014/2/26. N2 - Glioblastoma is the most common primary brain tumor with a median 12- to 15-month patient survival. Improving patient survival involves better understanding the biological mechanisms of glioblastoma tumorigenesis and seeking targeted molecular therapies. Central to furthering these advances is the collection and storage of surgical biopsies (biobanking) for research. This paper addresses an imaging modality, confocal reflectance microscopy (CRM), for safely screening glioblastoma biopsy samples prior to biobanking to ...
Beyond Pesticides, May 6, 2010) The European Commission has announced that triclosan has been formally withdrawn from the European list for use as a food contact additive; however, plastic materials that are intended to come in contact with food and placed on the market before November 2010 may still be sold until November 2011. The decision follows the European Unions 2009 regulations to impose limits on the amount of triclosan contained in cosmetics. Ciba, the Swiss-based company that is a subsidiary of BASF, announced last year that they had withdrawn the application of triclosan as a food contact additive so that they could instead focus their sales in the personal hygiene, health care and medical device sector. The company declared this to be a strategic business decision and declared that triclosan use as as an additive in plastics intended to come into contact with food was no longer appropriate. In the U.S. in 2009, Ciba requested a voluntarily cancellation of the registrations for ...
Delrin acetal resins are thermoplastic polymers manufactured by the polymerization of formaldehyde. The use of Delrin in total hip prostheses was first suggested in the mid-1960s. The attraction of Delrin is that the creep resistance is ten times that of ultrahigh molecular weight polyethylene, the most usually used plastic material. In addition, Delrin is about five times harder than ultrahigh molecular weight polyethylene and thus will resist the abrasive action of bone chips and acrylic cement particles.. Since 1970, Delrin acetal polymer has been used in the Christiansen total hip prosthesis and in the Christiansen endoprosthesis. Up to the end of 1977, approximately 7000 surgical procedures had been carried out with the prosthesis. The results have been very good. Prostheses removed for cases of infection or loosening have not shown wear on the articulating Delrin components. Furthermore, histological studies of the surrounding tissue show a benign tissue response similar to that seen ...
Disposable plastic cups are long gone. Nowadays when everyone is doing his/her part in promoting a clean and green environment, consumers play a vital role in helping to create a healthier environment by reusing most everything that used to be disposable. Plastic cups used to be the bane of environmental activists existence. However, consumers are now more aware of the consequences of disposing plastic cups after a single use, so now reusing plastic cups is being actively practiced. So plastic cups have now joined the likes of ceramics, stainless steel, and glasses when it comes to reusability. Why should we reuse plastic cups anyway? Here are five reasons why ...
Establishments primarily engaged in manufacturing paints (in paste and ready-mixed form); varnishes; lacquers; enamels and shellac; putties, wood fillers, and sealers; paint and varnish removers; paint brush cleaners; and allied paint products. Establishments primarily engaged in manufacturing carbon black are classified in Industry 2895; those manufacturing bone black, lamp black, and inorganic color pigments are classified in Industry 2816; those manufacturing organic color pigments are classified in Industry 2865; those manufacturing plastics materials are classified in Industry 2821; those manufacturing printing ink are classified in Industry 2893; those manufacturing caulking compounds and sealants are classified in Industry 2891; those manufacturing artistspaints are classified in Industry 3952; and those manufacturing turpentine are classified in Industry 2861 ...
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The Complete Book On Biodegradable Plastics And Polymers (recent Developments, Properties, Analysis, Materials & Processes) by Niir Board Of Consultants & Engineers, ISBN: 8178330350, Rs. 1275.00 / US$. 125.00
Books, Directory and CD databases, Project consultancy, Profiles, related publications and information on Environmentally friendly , eco-friendly Products, Natural Products, Biodegradable Plastics, Natural Dyes and Pigments, Jute Products, Natural Fibers from NPCS
TY - JOUR. T1 - Malignant biliary obstruction. T2 - A comparison of cost for a use of metal or plastic stent for palliation in Japanese health care system. AU - Fukami, Norio. AU - Inoue, Haruhiro. AU - Kudo, Shin Ei. PY - 2004/11/19. Y1 - 2004/11/19. N2 - Endoscopic treatment with endoprosthesis for obstructive jaundice is a well-accepted method for palliation of obstructive jaundice and its associated symptoms. Yet, there is no consensus whether a plastic stent or metal stent to be used. The longer patency period with metal stent is a definite advantage but its high cost limits its routine use. The best use of metal stent is accomplished with consideration of patients predicted prognosis and a medical cost in Japan. We used a simulated case scenario to calculate a cost for metal stent and non-metallic stent. Metal stent use would cost about 437 000 yen per patient at 6 months compared with 276 000-329 000 for non-metallic stents, and thus metal stent use appears to be more costly in current ...
Article Anaerobic digestion of aliphatic polyesters. Anaerobic processes for the treatment of plastic materials waste represent versatile and effective approach in environmental protection and solid waste management. In this work, anaerobic biodegrad...
Phone Charging Qi Wireless Charger For Volvo New XC90 S60 XC60 S90 C60 V90 V90CC V60 For Samsung Note 9 S9 S8 Features: 1.With Standard USB power supply interface, it can charge two mobile phones at the same time without affecting each other. 2.Made of hard plastic material, fine workmanship. 3.Easy installation, with cigarette lighter, plug and play. 4.Automatic power off after charging full, protect your battery more safety. 5.Sensitive, even phone with protective cases could be charged. 6.Durable and long service life Specification: -Type: Wireless Charger -Placement on Vehicle: Front -Product Modle: MG-SPA -Input Voltage: 9-18V -Output Power: 10W -Operating Temperature: -40??~+80??C -Efficiency: >70% -Operating Frequency??110KH2-205KHz -Size: 12.5x7.5x5.5cm -Color: Black Fitment: For Volvo XC90 S60 XC60 S90 C60 V90 V90CC V60 Compatible Products: For SAMSUNG GALAXY S6 GALAXY S6 Edge GALAXY S6 Edge+ GALAXY S7 GALAXY S7 Edge GALAXY S8 GALAXY S8+ GALAXY Notes GALAXY Note7 GALAXY Note8 For APPLE ...
Add to favorites. How do we save whales and other marine animals from ocean plastic? Our new reviews show that reducing plastic pollution can prevent the death of favorite species. Over 700 marine species, including half of the worlds cetaceans (such as whales and dolphins), all of its sea turtles, and a third of its seabirds, are known to ingest plastic. When animals eat plastic, it can impede their digestion, leading to long, slow deaths from starvation. Sharp pieces of plastic can also pierce the intestinal wall, causing infection and sometimes death. A piece of plastic ingested can kill an animal.. About eight million tons of plastic enter the ocean each year, so solving the problem may seem overwhelming. How do we reduce the damage to whales and other marine life from so much plastic? We also triage like a hospital overwhelmed by patients. By identifying the deadliest items for the most vulnerable species, we can apply solutions that target these deadliest items.. Some plastics are ...
With LC to LC termination, this high quality fibre optic patch cable is specifically designed for Fast Ethernet, fibre channel, ATM and Gigabit Ethernet applications. The small LC connectors satisfy the need for higher port density both in the telecom room and the work area, and offer twice the port density of traditional SC and ST fibre connectors. The LC connector with its RJ-style latch clip design is easy to engage and disengage, and gives each connection greater durability in resisting pulls, strains, snags, and impacts during cabling installs and maintenance. The Low Smoke Zero Halogen (LSZH / LS0H) jacket is composed from materials that lessen the smoke and halogen emissions when the cable is exposed to extreme temperatures. This reduces the amount of harmful toxic and corrosive gases that cabling made with plastic materials would otherwise emit into the air during combustion. This construction makes LSZH cables ideal for use where the protection of people and equipment from harmful corrosive
With LC to LC termination, this high quality fibre optic patch cable is specifically designed for Fast Ethernet, fibre channel, ATM and Gigabit Ethernet applications. The small LC connectors satisfy the need for higher port density both in the telecom room and the work area, and offer twice the port density of traditional SC and ST fibre connectors. The LC connector with its RJ-style latch clip design is easy to engage and disengage, and gives each connection greater durability in resisting pulls, strains, snags, and impacts during cabling installs and maintenance. The Low Smoke Zero Halogen (LSZH / LS0H) jacket is composed from materials that lessen the smoke and halogen emissions when the cable is exposed to extreme temperatures. This reduces the amount of harmful toxic and corrosive gases that cabling made with plastic materials would otherwise emit into the air during combustion. This construction makes LSZH cables ideal for use where the protection of people and equipment from harmful corrosive
Quick non-destructive assessment of leaf chlorophyll content material (LCC) is very important to studying phenotypes linked to plant growth and stress resistance. changed white in color and everything pigments had been extracted. Thereafter, the leaf pigment blend was shifted to a 50ml volumetric 88495-63-0 flask with 95% ethanol and one area of the blend was centrifuged in plastic material tubes using a rotational swiftness of 3200 r/min for 10min. The supernatant was decanted through the tubes and its own absorbance immediately assessed using a Rabbit polyclonal to c-Myc (FITC) Lambda 900 spectrophotometer (Perkin-Elmer, Waltham, MA, USA). Chl articles (g/cm2) was computed regarding to Wintermans and De Mots (1965). Data evaluation A lot more than 30 released Chl indices (Desk 1) for estimation from spectral evaluation were examined using the experimental data. A lot of the examined indices could be categorized into five classes: (i) single-band reflectance or single-difference (SD) index ...
An envelope usually made of paper or plastic material which permits steam and heat penetration and the exhaustion of air in the sterilization process. It may be self or heat sealed. It is used in the sterilization of syringes, needles, small surgical instruments, pipettes and the like. Excludes BAG, STERILIZATION; BAG, STERILIZATION-BIOHAZARD DISPOSAL; and WRAPPER, STERILIZATION. ...