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Encyclopedia results for Low density polyethylene

Low density polyethylene





Encyclopedia results for Low density polyethylene

  1. Linear low-density polyethylene

    Linear low density polyethylene LLDPE is a substantially linear polymer polyethylene , with significant numbers of short branches, commonly made by copolymerization of ethylene with longer chain olefin s. Linear low density polyethylene differs structurally from conventional low density polyethylene LDPE because of the absence of long chain branching. The linearity of LLDPE results from the different manufacturing processes of LLDPE and LDPE. In general, LLDPE is produced at lower temperatures and pressures by copolymerization of ethylene and such higher alpha olefins as butene , hexene , or octene . The copolymerization process produces an LLDPE polymer that has a narrower molecular weight distribution than conventional LDPE and in combination with the linear structure, significantly different rheological properties. Production and properties The production of LLDPE is initiated by transition metal catalysts, particularly Ziegler or Philips type of catalyst. The actual polymerization process can be done either in solution phase or in gas phase reactors. Usually, octene is the comonomer in solution phase while butene and hexene are copolymerized with ethylene in a gas phase reactor. LLDPE has higher tensile strength and higher impact and puncture resistance than does Low density polyethylene .... range 20 to 60 C See also Cross linked polyethylene PEX Low density polyethylene LDPE High density polyethylene HDPE Medium density polyethylene MDPE Ultra high molecular weight polyethylene UHMWPE ... when elongated. As the deformation rate of the polyethylene increases, LDPE demonstrates a dramatic ... has penetrated almost all traditional markets for polyethylene it is used for plastic bags and sheets ... Study Polyethylene LLDPE publisher http www.ceresana.com en Ceresana Research url http www.ceresana.com en market studies plastics polyethylene lldpe ref LLDPE is manufactured by using metallocene catalysts labeled mLLDPE . Physical Properties Property Value Density 0.92 g cm Surface hardness SD48 ...   more details



  1. Low-density polyethylene

    . ref cite web title Plastic Properties of Low Density Polyethylene LDPE publisher http www.dynalabcorp.com ... atoms than high density polyethylene HDPE , so its intermolecular force s instantaneous dipole ... s, screen cards, and optical disc drive s Playground slide s Plastic wrap s See also Linear low density polyethylene LLDPE High density polyethylene HDPE Medium density polyethylene MDPE Ultra high molecular weight polyethylene UHMWPE Stretch wrap References reflist Category Polyolefins Category ..., its density is lower. LDPE contains the chemical elements carbon and hydrogen . Chemical resistance ...   more details



  1. Medium-density polyethylene

    Here is a table of data skip past it to edit the text. border 0 cellpadding 2 cellspacing 0 align right style margin none 1em style margin 10px border solid 1px black width 400px colspan 2 align center bgcolor cccccc MDPE Density 0.926 0.940 gram g cubic centimetre cm sup 3 sup Young modulus E modulus Tensile modulus 172 379 Mega M Pascal unit Pa Tensile strength sub t sub 12.4 19.3 Mega M Pascal unit Pa Elongation break 100 150 Brittleness , low temperature 118 Degree Celsius C Vicat softening point Vicat 99 124 Degree Celsius C Specific heat capacity Specific heat c 1.916 Kilo k joules J kilogram kg . Kelvin K Dead note vic Deformation temperature at 10 kN needle load small colspan 2 align left small Source J.Brandrup, E. H. Immergut & E.A. Grulke, Polymer Handbook Fourth edition, ISBN 0 471 48171 8 small Medium density polyethylene MDPE is a type of polyethylene defined by a density range of 0.926 0.940 g cm sup 3 sup . It is less dense than HDPE , which is more common. MDPE can be produced by chromium silica catalysts, Ziegler Natta catalysts or metallocene catalysts . MDPE is defined by a density range of 0.926 0.940 g cm sup 3 sup . ref http www.plasticmoulding.ca polymers polyethylene.htm Polyethylene ref MDPE has good shock and drop resistance properties. It also is less notch sensitive than HDPE. Stress cracking resistance is better than that of HDPE. MDPE is typically used in gas pipes and fittings, sacks, shrink film, packaging film, carrier bags, and screw closures. ref http www.humes.co.nz Municipal view.php?id 1094342335&origin prange&application Polyethylene Fittings Medium Density Polyethylene MDPE ref See also Cross linked polyethylene PEX Low density polyethylene LDPE Linear low density polyethylene LLDPE High density polyethylene HDPE Ultra high molecular weight polyethylene UHMWPE Stretch wrap Plastic recycling References Reflist External links http www.usplastic.com catalog item.aspx?itemid 25184 Medium Density Polyethylene Specialty Rinse Tan ...   more details



  1. High-density polyethylene

    advantages over glass, metal and cardboard. See also Cross linked polyethylene PEX Linear low density polyethylene LLDPE Low density polyethylene LDPE Medium density polyethylene MDPE Phillips Disaster Plastic recycling Resin identification code Ultra high molecular weight polyethylene UHMWPE Stretch ... higher temperature s 120 C 248 F for short periods, 110 C 230 F continuously . High density polyethylene ... http www.ides.com pm 1 hdpe.asp HDPE Advantages & Disadvantages DEFAULTSORT High Density Polyethylene ... th High density polyethylene vi V i a k thu t ch ng th m HDPE ...   more details



  1. Very low-density lipoprotein

    Unreferenced date November 2010 Very low density lipoprotein VLDL is a type of lipoprotein made by the liver . VLDL is one of the five major groups of lipoproteins chylomicrons , VLDL, LDL low density lipoprotein , intermediate density lipoprotein , high density lipoprotein that enable fats and cholesterol to move within the water based solution of the bloodstream. VLDL is assembled in the liver from triglycerides , cholesterol , and apolipoprotein s. VLDL is converted in the bloodstream to low density lipoprotein LDL . VLDL particles have a diameter of 30 80 nanometers nm . VLDL transports endogeny endogenous products, whereas chylomicrons transport exogenous dietary products. Function VLDL transports endogenous triglycerides , phospholipids , cholesterol , and cholesteryl esters. It functions as the body s internal transport mechanism for lipids. Changes during circulation Nascent VLDL released from the liver contains Apolipoprotein B100 , apolipoprotein C1 apoC1 , apolipoprotein E apoE , cholesterol , Cholesteryl ester cholestryl esters , and triglycerides . As it circulates in blood, it picks up apolipoprotein C II apoC II and additional apoE donated from high density lipoprotein HDL . At this point, nascent VLDL becomes a mature VLDL. Once in circulation, VLDL will come in contact with lipoprotein lipase LPL in the capillary beds in the body adipose, cardiac, and skeletal muscle . LPL will remove triglycerides from VLDL for storage or energy production. VLDL now meets back up with HDL where apoC II is transferred back to HDL but keeps apoE . HDL also transfers cholesteryl ... hyperlipidemia Lipid profile Lipoproteins reflist DEFAULTSORT Very Low Density Lipoprotein Category Lipoproteins ca Lipoprote nes de molt baixa densitat de Very Low Density Lipoprotein es Lipoprote na ... ru fi Very low density lipoprotein tr ok d k yo unluklu lipoprotein ... and CETP enzymes, the composition of the molecule changes, and it becomes intermediate density lipoprotein ...   more details



  1. Low-density-lipoprotein receptor kinase

    enzyme Name low density lipoprotein kinase EC number 2.7.11.29 CAS number 107445 00 1 IUBMB EC number 2 7 11 29 GO code 0050063 image width caption In enzymology , a low density lipoprotein receptor kinase EC number 2.7.11.29 is an enzyme that catalysis catalyzes the chemical reaction ATP low density lipoprotein receptor L serine math rightleftharpoons math ADP low density lipoprotein receptor O phospho L serine Thus, the two substrate biochemistry substrates of this enzyme are adenosine triphosphate ATP and low density lipoprotein receptor L serine , whereas its two product chemistry products are adenosine diphosphate ADP and low density lipoprotein receptor O phospho L serine . This enzyme belongs to the family of transferase s, specifically those transferring a phosphate group to the sidechain oxygen atom of serine or threonine residues in protein s protein serine threonine kinase s . The systematic name of this enzyme class is ATP low density lipoprotein receptor L serine O phosphotransferase . Other names in common use include ATP low density lipoprotein L serine O phosphotransferase , LDL receptor kinase , low density lipoprotein kinase , low density lipoprotein kinase , low density lipoprotein receptor kinase phosphorylating , and STK7 . References reflist 1 cite journal author Kishimoto A, Brown MS, Slaughter CA, Goldstein JL date 1987 title Phosphorylation of serine 833 in cytoplasmic domain of low density lipoprotein receptor by a high molecular weight enzyme resembling casein kinase II journal J. Biol. Chem. volume 262 pages 1344&ndash 51 pmid 3100530 issue 3 cite journal author Kishimoto A, Goldstein JL, Brown MS date 1987 title Purification of catalytic subunit of low density lipoprotein receptor kinase and identification of heat stable activator protein journal J. Biol. Chem. volume 262 pages 9367&ndash 73 pmid 3597414 issue 19 enzyme stub Category EC 2.7.11 Category Enzymes of unknown structure ...   more details



  1. Low density lipoprotein receptor gene family

    Pfam box Symbol Ldl recept a Name Low density lipoprotein receptor domain class A image PDB 1ldl EBI.jpg width caption Structure of a cysteine rich repeat from the low density lipoprotein receptor. ref name pmid7603991 cite journal author Daly NL, Scanlon MJ, Djordjevic JT, Kroon PA, Smith R title Three dimensional structure of a cysteine rich repeat from the low density lipoprotein receptor journal Proc. Natl. Acad. Sci. U.S.A. volume 92 issue 14 pages 6334 8 year 1995 month July pmid 7603991 pmc 41512 doi 10.1073 pnas.92.14.6334 url ref Pfam PF00057 InterPro IPR002172 SMART SM00192 PROSITE PS50068 SCOP 1ldl TCDB OPM family OPM protein PDB PDB2 1ajj , PDB2 1cr8 , PDB2 1d2j , PDB2 1d2l , PDB2 1f5y , PDB2 1f8z , PDB2 1hj7 , PDB2 1hz8 , PDB2 1i0u , PDB2 1ijq , PDB2 1j8e , PDB2 1jrf , PDB2 1k7b , PDB2 1ldl , PDB2 1ldr , PDB2 1n7d , PDB2 1v9u , PDB2 1xfe , PDB2 2fcw , PDB2 2gtl , PDB2 2i1p , PDB2 2jm4 , PDB2 3bps Pfam box Symbol Ldl recept b Name Low density lipoprotein receptor domain class B image PDB 1n7d EBI.jpg width caption Structure of the LDL receptor extracellular domain at endosomal pH. ref name pmid12459547 cite journal author Rudenko G, Henry L, Henderson K, et al. title Structure ... protein PDB PDB2 1ijq , PDB2 1n7d , PDB2 1npe The low density lipoprotein receptor gene family genetic ... author Nykjaer A, Willnow TE title The low density lipoprotein receptor gene family a cellular Swiss ... in the blood is captured by low density lipoprotein LDL and removed in the liver by the endocytosis ... title Differential functions of members of the low density lipoprotein receptor family suggested by their distinct ... of the low density lipoprotein receptor gene family with cytosolic adaptor and scaffold proteins ... Listed below are human proteins containing low density lipoprotein receptor domains Class A Complement ... SORL1 VLDLR See also Soluble low density lipoprotein receptor related protein sLRP impaired function ... Receptors Category Low density lipoprotein receptor gene family Category Signal transduction ...   more details



  1. YWTD domain of low-density lipoprotein receptor

    The Low density lipoprotein receptor gene family low density lipoprotein receptor LDLR regulates cholesterol homeostasis in mammalian cells. LDLR binds cholesterol carrying LDL, associates with Endocytosis Clathrin mediated endocytosis clathrin coated pits , and is internalized into acidic endosome s where it separates from its ligand. The ligand is degraded in lysosome s, while the receptor returns to the cell surface ref name PUB00017008 cite journal author Brown MS, Goldstein JL title A receptor mediated pathway for cholesterol homeostasis journal Science volume 232 issue 4746 pages 34 47 year 1986 pmid 3513311 doi 10.1126 science.3513311 ref . The LDLR has several domains. The ligand binding domain contains seven LDL receptor class A repeats, each with three disulphide bonds and a coordinated Ca sup 2 sup ion. The second conserved region contains two EGF repeats, followed by six YWTD or LDL receptor clas s B repeats and another EGF repeat ref name PUB00003391 cite journal author Springer TA title An extracellular beta propeller module predicted in lipoprotein and scavenger receptors, tyrosine kinases, epidermal growth factor precursor, and extracellular matrix components journal J. Mol. Biol. volume 283 issue 4 pages 837 862 year 1998 pmid 9790844 doi 10.1006 jmbi.1998.2115 ref . This conserved region is critical for ligand release and recycling of the receptor ref name PUB00017009 cite journal author Russell DW, Brown MS, Goldstein JL, Davis CG, Sudhof TC, Anderson RG title Acid dependent ligand dissociation and recycling of LDL receptor mediated by growth factor homology region journal Nature volume 326 issue 6115 pages 760 765 year 1987 pmid 3494949 doi 10.1038 326760a0 ... from Drosophila melanogaster , low density lipoprotein LDL receptor ref name PUB00000798 cite journal ... growth factor, and nidogen entactin . References reflist InterPro content IPR000033 Category Low density lipoprotein receptor gene family ...   more details



  1. Low-density parity-check code

    In information theory , a low density parity check LDPC code is a linear block code linear error correcting code , a method of transmitting a message over a signal noise noisy transmission channel, ref David J.C. MacKay 2003 Information theory, Inference and Learning Algorithms, CUP, ISBN 0 521 64298 1, also http www.inference.phy.cam.ac.uk mackay itila book.html available online ref ref Todd K. Moon 2005 Error Correction Coding, Mathematical Methods and Algorithms. Wiley, ISBN 0 471 64800 0 Includes code ref and is constructed using a sparse bipartite graph . ref Amin Shokrollahi 2003 LDPC Codes An Introduction ref LDPC codes are Category capacity approaching codes capacity approaching codes , which means that practical constructions exist that allow the noise threshold to be set very close or even arbitrarily close on the binary erasure channel BEC to the theoretical maximum the Shannon ... Impractical to implement when first developed by Gallager in 1963, ref Gallager, R. G., Low Density ... in low density parity check codes have seen them surpass turbo codes in terms of error floor ... of Capacity Approaching Irregular Low Density Parity Check Codes, IEEE Transactions in Information ... richardson01b Thomas J. Richardson and R diger L. Urbanke, Efficient Encoding of Low Density Parity .... Kou et al. in 2001. ref name Kou1 Y. Kou, S. Lin and M. Fossorier, Low Density Parity Check Codes ... Turbo, Low Density Parity Check and Repeat Accumulate Codes Source code for encoding, decoding, and simulating ... LDPC decoder in MATLAB CCSDS state collapsed DEFAULTSORT Low Density Parity Check Code Category ... Low Density Parity Check Code es ldpc he LDPC nl Low density parity check code ja ru ... in 1996. ref name MacKay96 David J.C. MacKay and Radford M. Neal, Near Shannon Limit Performance of Low Density Parity Check Codes, Electronics Letters, July 1996 ref Turbo code s, another class of capacity ... results http www.sigpromu.org ldpc DE index.php Online density evolution for LDPC codes ...   more details



  1. Soluble low density lipoprotein receptor-related protein

    Soluble low density lipoprotein receptor related protein sLRP is a biological substance naturally produced by the human body. ref cite journal author Quinn KA, Pye VJ. et al. title Characterization of the soluble form of the low density lipoprotein receptor related protein LRP journal Exp. Cell Res. year 1999 volume 251 issue 2 pages 433 441 pmid 10471328 doi 10.1006 excr.1999.4590 ref ref cite journal author Quinn KA, Grimsley PG, et al. title Soluble low density lipoprotein receptor related protein LRP circulates in human plasma journal J. Biol. Chem. year 1997 volume 272 issue 38 pages 23946 23951 pmid 9295345 doi 10.1074 jbc.272.38.23946 ref This protein has been found to bind to and neutralize anywhere from 70 to 90 percent of the amyloid beta peptide that also naturally circulates in healthy human or mouse blood plasma plasma . ref cite web title Draining away brain s toxic protein to stop Alzheimer s url http www.eurekalert.org pub releases 2007 08 uorm dab080907.php accessdate 2007 10 25 ref Impairment of this function is strongly associated with, and may soon be shown definitively to be the principal cause of, Alzheimer s Disease . ref cite journal author Sagare A, Deane R. et al. title Clearance of amyloid beta by circulating lipoprotein receptors. journal Nat. Med. year 2007 volume 13 issue 9 pages 1029 1031 pmid 17694066 pmc 2936449 doi 10.1038 nm1635 ref References reflist Category Alzheimer s disease Category Low density lipoprotein receptor gene family ...   more details



  1. Low density lipoprotein receptor-related protein 4

    PBB geneid 4038 Low density lipoprotein receptor related protein 4 LRP 4 , also known as multiple epidermal growth factor like domains 7 MEGF7 , is a protein that in humans is encoded by the LRP4 gene . ref name entrez cite web title Entrez Gene low density lipoprotein receptor related protein 4 url http www.ncbi.nlm.nih.gov sites entrez?Db gene&Cmd ShowDetailView&TermToSearch 4038 accessdate ref ref name pmid9693030 cite journal author Nakayama M, Nakajima D, Nagase T, Nomura N, Seki N, Ohara O title Identification of high molecular weight proteins with multiple EGF like motifs by motif trap screening journal Genomics volume 51 issue 1 pages 27 34 year 1998 month July pmid 9693030 doi 10.1006 geno.1998.5341 url issn ref LRP 4 is a member of the Lipoprotein receptor related protein family and may be a regulator of Wnt signaling pathway Wnt signaling . Clinical significance Mutations in this gene are associated with Cenani Lenz syndactylism . ref name pmid20381006 cite journal author Li Y, Pawlik B, Elcioglu N, et al. title LRP4 mutations alter Wnt beta catenin signaling and cause limb and kidney malformations in Cenani Lenz syndrome journal Am. J. Hum. Genet. volume 86 issue 5 pages 696 706 year 2010 month May pmid 20381006 pmc 2869043 doi 10.1016 j.ajhg.2010.03.004 url http linkinghub.elsevier.com retrieve pii S0002 9297 10 00147 3 ref References reflist Further reading refbegin 2 cite journal author Nakayama M, Kikuno R, Ohara O title Protein protein interactions between large proteins two hybrid screening using a functionally classified library composed of long cDNAs. journal Genome Res. volume 12 issue 11 pages 1773 84 year 2002 pmid 12421765 doi 10.1101 gr.406902 pmc ... of the low density lipoprotein receptor related protein 10, a new member of the LDLR gene .... title Mutations in the gene encoding the low density lipoprotein receptor LRP4 cause abnormal limb ... New sequence variants associated with bone mineral density. journal Nat. Genet. volume 41 issue 1 pages ...   more details



  1. Low density lipoprotein receptor-related protein 8

    PBB geneid 7804 Low density lipoprotein receptor related protein 8 is a protein that in humans is encoded by the LRP8 gene . ref name pmid8626535 cite journal author Kim DH, Iijima H, Goto K, Sakai J, Ishii H, Kim HJ, Suzuki H, Kondo H, Saeki S, Yamamoto T title Human apolipoprotein E receptor 2. A novel lipoprotein receptor of the low density lipoprotein receptor family predominantly expressed in brain journal J Biol Chem volume 271 issue 14 pages 8373 80 year 1996 month Jun pmid 8626535 pmc doi 10.1074 jbc.271.14.8373 ref ref name pmid9079678 cite journal author Kim DH, Magoori K, Inoue TR, Mao CC, Kim HJ, Suzuki H, Fujita T, Endo Y, Saeki S, Yamamoto TT title Exon intron organization, chromosome localization, alternative splicing, and transcription units of the human apolipoprotein E receptor 2 gene journal J Biol Chem volume 272 issue 13 pages 8498 504 year 1997 month May pmid 9079678 pmc doi 10.1074 jbc.272.13.8498 ref ref name entrez cite web title Entrez Gene LRP8 low density lipoprotein receptor related protein 8, apolipoprotein e receptor url http www.ncbi.nlm.nih.gov sites entrez?Db gene&Cmd ShowDetailView&TermToSearch 7804 accessdate ref Low density lipoprotein receptor related protein 8 , or LRP8 also Apolipoprotein E Receptor 2 ApoER2 is a member of the Low density lipoprotein receptor gene family LDL receptor family that plays a role in endocytosis and signal transduction. Together with VLDLR it is able to bind reelin , leading to the phosphorylation of DAB1 , which ... an apolipoprotein E receptor, a member of the low density lipoprotein receptor LDLR family. Apolipoprotein ... remnants, very low density lipoprotein VLDL , and high density lipoprotein HDL . The apolipoprotein ... url http www.jbc.org cgi pmidlookup?view long&pmid 17314095 ref Interactions Low density ... SL, Ng HK, Baum L, et al. title Low density lipoprotein receptor related protein 8 apolipoprotein E ... Receptors Category Low density lipoprotein receptor gene family neuroscience stub gene 1 stub receptor ...   more details



  1. Low density lipoprotein receptor adapter protein 1

    PBB geneid 26119 Low density lipoprotein receptor adapter protein 1 is a protein that in humans is encoded by the LDLRAP1 gene . ref name entrez cite web title Entrez Gene LDLRAP1 low density lipoprotein receptor adaptor protein 1 url http www.ncbi.nlm.nih.gov sites entrez?Db gene&Cmd ShowDetailView&TermToSearch 26119 accessdate ref The PBB Summary template is automatically maintained by Protein Box Bot. See Template PBB Controls to Stop updates. PBB Summary section title summary text The protein encoded by this gene is a cytosolic protein which contains a phosphotyrosine binding PTD domain. The PTD domain has been found to interact with the cytoplasmic tail of the LDL receptor . Mutations in this gene lead to LDL receptor malfunction and cause the disorder autosomal recessive hypercholesterolaemia. ref name entrez Interactions LDLRAP1 has been shown to Protein protein interaction interact with AP2B1 ref name pmid16189514 cite journal last Rual first Jean Fran ois authorlink coauthors Venkatesan Kavitha, Hao Tong, Hirozane Kishikawa Tomoko, Dricot Am lie, Li Ning, Berriz Gabriel F, Gibbons Francis D, Dreze Matija, Ayivi Guedehoussou Nono, Klitgord Niels, Simon Christophe, Boxem Mike, Milstein Stuart, Rosenberg Jennifer, Goldberg Debra S, Zhang Lan V, Wong Sharyl L, Franklin Giovanni, Li Siming, Albala Joanna S, Lim Janghoo, Fraughton Carlene, Llamosas Estelle, Cevik Sebiha, Bex Camille, Lamesch Philippe, Sikorski Robert S, Vandenhaute Jean, Zoghbi Huda Y, Smolyar Alex, Bosak Stephanie, Sequerra Reynaldo, Doucette Stamm Lynn, Cusick Michael E, Hill David E, Roth Frederick P, Vidal ... RG, et al. title The modular adaptor protein ARH is required for low density lipoprotein LDL binding ... by low density lipoprotein LDL binding and modulates endocytosis of the LDL LDL receptor complex ... journal author Jones C, Hammer RE, Li WP, et al. title Normal sorting but defective endocytosis of the low density lipoprotein receptor in mice with autosomal recessive hypercholesterolemia. journal J ...   more details



  1. Renewable Polyethylene

    200000 ST kg , and will produce high density polyethylene HDPE and low density polyethylene LDPE ...Original research date March 2008 Main Bioplastics Polyethylene Biopolyethylene also known as renewable polyethylene is polyethylene made out of ethanol , which becomes ethylene after a dehydration process. It can be made from various feedstocks including sugar cane , sugar beet , and wheat grain . ref http www.nnfcc.co.uk metadot index.pl?id 10220 isa Category op show. Life Cycle Assessment Workbooks for a Selection of Major Renewable Chemicals ref The final product polyethylene is identical to naphta or gas based polyethylene, therefore maintaining the physical properties for conversion into plastics products and also maintaining its recycling properties. The first plant World s first announced ethanol based chemical pole, totally integrated from sugarcane to polyethylene, was recently announced by The Dow Chemical Company , in conjunction with Crystalsev, a large sugar and ethanol producer in Brazil. ref http www.dow.com commitments studies sugar.htm Dow and Crystalsev Announce Plans to Make Polyethylene from Sugar Cane in Brazil ref The pole is said to be projected to produce 770 million pounds per year of renewable LLDPE linear low density polyethylene , will begin construction in 2008, and is slated to start production in 2011. The amount of ethanol needed to make one metric ton of polyethylene is roughly two metric tons, as dehydration takes half of the weight in water, from the sugar cane based ethanol, before converting into ethylene chem C 2 H 4 . Benefits One of the main environmental benefits of this project will be the sequestration of roughly 2 kg of CO2 per kg of polyethylene produced, which comes from the CO2 absorbed by the sugar cane while growing, minus ... activities for producing green polyethylene from sugar cane. Braskem will build a new facility ...,en Braskem & Toyota Tsusho start joint marketing activities for green polyethylene from sugar cane ...   more details



  1. Polyethylene microspheres

    Polyethylene microspheres are a group of polymer microspheres , sometimes also referred to as polyethylene spheres, polyethylene beads, polyethylene balls and polyethylene microparticles . They are commercially available in particle sizes from 10  um to 1000  um 1mm . Low melting temperature and fast phase transition s make this material especially suitable for creating porous structures in ceramics and other materials. Polyethylene microspheres are widely used in cosmetics, skin care and personal care industries, as well as biomedical and health science research, microscopy techniques, fluid visualization and fluid flow analysis, and process troubleshooting. ref http www.pcimag.com Articles Feature Article BNP GUID 9 5 2006 A 10000000000000723862 Paint and Coatings Industry Magazine, January 1st, 2010 Opaque Polyethylene Microspheres for the coatings applications ref Polyethylene microspheres are widely used in cosmetics industry as gentle and effective exfoliating agents. Sphericity and particle size uniformity create ball bearing effect in creams and lotions, resulting in a silky texture and spreadability. Exceptional smoothness and roundness also provides lubrication during application. Micropsheres in different colors add visual appeal to cosmetic products. In addition, microspheres minimize the appearance of fine lines and wrinkles by both filling them and scattering ... and Toiletries, April 2010 Issue Solid Polyethylene Microspheres for effects in color cosmetics ref Fluorescent polyethylene microspheres are commonly used to run blind test s on laboratory and industrial ... a bright fluorescent response under UV light . Colored polyethylene microspheres are used for fluid .... Black polyethylene microspheres can have magnetic or conductive functionality, and have ... Reflist External links http www.cospheric microspheres.com Polyethylene Microspheres vs Glass Microspheres s 42.htm Glass vs Polyethylene Microspheres Category Cosmetics chemicals ...   more details



  1. Polyethylene glycol

    2 sub CO sub 3 sub are used to prepare low molecular weight polyethylene glycol. Medical uses It is the basis of a number of laxative s e.g., macrogol containing products such as Movicol and polyethylene glycol 3350 , or SoftLax, MiraLAX or GlycoLax . Whole bowel irrigation polyethylene glycol with added ... Other uses Polyethylene glycol has a low toxicity and is used in a variety of products. ref cite book ...chembox Verifiedfields changed verifiedrevid 458439406 ImageFile Polyethylene glycol.png ImageSize 200 ... C sub 2n sub H sub 4n 2 sub O sub n 1 sub MolarMass variable Appearance Density MeltingPt BoilingPt Solubility Section3 Chembox Hazards MainHazards FlashPt 182 287 C Autoignition Polyethylene glycol ... also been known as polyethylene oxide PEO or polyoxyethylene POE , depending on its molecular ... PEG 16 macadamia glycerides PEG 10 Sunflower Glycerides discuss Talk Polyethylene glycol Merger proposal ... PEG and PEO are liquids or low melting solids, depending on their molecular weight s. PEGs are prepared ... 109158199225620 ref File SArfus PEO.3D.jpg thumb right Polyethylene oxide PEO, Mw 4kD nanometric crystallites ... Dow ref Production Polyethylene glycol is produced by the interaction of ethylene oxide with water, ethylene glycol , or ethylene glycol oligomers. ref http chemindustry.ru Polyethylene Glycol.php Polyethylene glycol , Chemindustry.ru ref The reaction is catalyzed by acidic or basic catalysts. Ethylene ... the creation of polymers with a low polydispersity narrow molecular weight distribution . Polymer ... one to obtain PEG with a low polydispersity . Polymerization of ethylene oxide is an exothermic ... can lead to runaway polymerization, which can end with an explosion after a few hours. Polyethylene oxide or high molecular polyethylene glycol is synthesized by suspension polymerization . It is necessary ... 10.1111 j.1572 0241.2007.01365.x title A Randomized, Multicenter Comparison of Polyethylene Glycol ... When attached to various protein medication s, polyethylene glycol allows a slowed clearance of the carried ...   more details



  1. Polyethylene synovitis

    mergeto Joint replacement Discuss Talk Joint replacement date February 2010 unreferenced date September 2009 wikify date September 2009 Polyethylene synovitis is an inflammation caused by increased quantities of polyethylene wear particles in the synovial fluid of patients who have had joint replacement surgery. These patients experience pain in the replaced joint, a swollen joint with signs of increased volume of synovial fluid, and x ray changes demonstrating increased wear of the polyethylene components. Samples of synovial fluid taken from these patients showed that the synovial fluid was laden with polyethylene particles scratched from the polyethylene joint surfaces. References Reflist External links cite journal pmid 1774577 year 1991 last1 Finkelstein first1 JA last2 Anderson first2 GI last3 Richards first3 RR last4 Waddell first4 JP title Polyethylene synovitis following canine total hip arthroplasty. Histomorphometric analysis volume 6 Suppl pages S91 6 journal The Journal of arthroplasty DEFAULTSORT Polyethylene Synovitis Category Inflammations ...   more details



  1. Polyethylene amine

    Polyethylene amine is a polymer of aziridine with the molecular formula CH sub 2 sub CH sub 2 sub NH sub n sub . It is a structural analogue of polyethylene glycol with NH in place of oxygen atoms. It is produced by the polymerization of aziridine. Oligomeric polyethylene amines with a small number of units are used as Curing chemistry curing agents for epoxy resin s. They are water soluble. The gelling properties of higher polyethylene amines are useful for resin formulas that require high viscosity during application and curing. Polyethylene amine can form gel s. Due to the rich content of easily protonated amine groups, in acidic solutions it behaves as a polyelectrolyte polycation . Polyethylene amine may have applications as a component of ion exchange resin s. High selectivity semipermeable membranes, permeable for carbon dioxide and retaining oxygen , can be made from this material as well. These are important for life support systems. http www.dsls.usra.edu meetings bio2001 pdf EVAcomplete.pdf See also Ethylene diamine Diethylene triamine Triethylene tetramine Polyethylenimine Category Organic polymers Category Polyelectrolytes Category Polyamines ...   more details



  1. Sintered polyethylene

    Orphan date October 2008 Sinter plate filter elements were developed in Germany during the years of 1981 and 1982. These rigid filter elements are used in dust collectors and will produce clean gas values of 0.1 to 1.0 mg m3 with emissions of 0.001 pounds per hour with a maximum of 0.0004 gr ft3, even with dusts of D50 1 m. The EPA http www.epa.gov defines high efficiency as removal of 0 to 5.0 m particulates. http www.epa.gov eogapti1 module6 matter control control.htm ffadvantages The filter element matrix consists of molded sintered polyethylene PE with a reinforced mounting header. An additional PTFE coating gets into the pores of the PE basic body and forms a micro porous, non sticking surface resulting in surface loaded filtration. This combined material is chemical resistant and unaffected by slight moisture. The rigid sinter plate filters have an extremely stable structure and can be recycled. The average useful life of a sinter plate filter element can exceed 10 years. Sinter plate PE filter elements are environmentally compatible. They produce no toxic waste in themselves and can be washed off and reused. There is no contamination of material from filter fibers like fabric and cartridge media elements. Dust collector Fabric Collectors The rigidity of the matrix results in no wear from abrasive material. Cleaning is accomplished by on line, low pressure reverse air jet pulse. Standard elements will handle temperatures up to 158 F with improved elements designed for up to 230 F The separation efficiency exceeds that required by the BIA certificate regarding dust classification M. Category Filters ...   more details



  1. Polyethylene naphthalate

    This the polymer other uses of the acronym PEN disambiguation Polyethylene naphthalate PEN Poly ethylene 2,6 naphthalate is a polyester with good barrier properties even better than Polyethylene terephthalate . Because it provides a very good oxygen barrier, it is particularly well suited for bottling beverages that are susceptible to oxidation, such as beer . It is also used in making high performance sailcloth . It also has been found to show supreme scintillation properties and is expected to replace classic plastic scintillator s. ref http iopscience.iop.org 0295 5075 95 2 22001 Nakamura et al., Evidence of deep blue photon emission at high efficiency by common plastic Europhysics Letters ref Production Polyethylene Naphthalate PEN, Poly ethylene 2,6 naphthalene dicarboxylate, CAS No 25853 85 4 is a polyester polymer of Naphthalene Dicarboxilate and Ethylene Glycol. There are two major manufacturing routes for PEN, i.e. an ester or an acid process, named according to whether the starting monomer is a diester or a diacid of naphthalene, respectively. In both cases for PEN, the glycol monomer is Ethylene Glycol. Solid state polymerization SSP of the melt produced resin pellets is the preferred process to upgrade the molecular weight of PEN. Applications Significant commercial markets have been developed for its application in textile and industrial fibers, films, and foamed articles, containers for carbonated beverages, water and other liquids, and thermoformed applications. Benefits when compared to PET Polyethylene Terephthalate The two condensed aromatic rings of PEN confer on it improvements in strength and modulus, chemical and hydrolytic resistance, gaseous barrier, thermal and thermo oxidative resistance and ultraviolet UV light barrier resistance compared to PET. PEN is also the medium for Advanced Photo System film. PEN is also used for manufacturing high performance ... DEFAULTSORT Polyethylene Naphthalate Category Polyesters Category Plastics polymer stub de Polyethylennaphthalat ...   more details



  1. Density

    if it is gently poured into a container, the density will be low if the same sand is then compacted ...about mass density semiprotected small yes pp move indef The mass density or density of a material is defined as its mass per unit volume . The symbol most often used for density is the Greek letter Rho letter rho . In some cases for instance, in the United States oil and gas industry , density is also ... Density definition in Oil Gas Glossary publisher Oilgasglossary.com date accessdate 2010 09 14 ref ... different densities, so density is an important concept regarding buoyancy , purity and packaging . Osmium .... If the average density including any air below the waterline of an object is less than water 1000 ... cases density is expressed as the dimensionless quantities specific gravity SG or relative density RD , in which case it is expressed in multiples of the density of some other standard material ... in water. The mass density of a material varies with temperature and pressure. The variance is typically ... decreases the volume of the object and therefore increase its density. Increasing the temperature of a substance with some exceptions decreases its density by increasing the volume of that substance ... to top of the fluid due to the decrease of the density of the heated fluid. This causes it to rise relative to more dense unheated material. The reciprocal of the density of a substance is called its specific volume , a representation commonly used in thermodynamics . Density is an intensive property in that increasing the amount of a substance does not increase its density rather it increases its ... in the Bath , Scientific American , December 2006. ref Mathematically, density is defined as mass divided by volume math rho frac m V , math where math is the density, math m is the mass, and math V is the volume. From this equation, mass density must have units of a unit of mass per unit of volume ... number of units for mass density in use. The SI unit of kilogram per cubic metre math kg m and the cgs ...   more details



  1. Low

    , per Wikipedia Manual of Style disambiguation pages wiktionary low Low or LOW may refer to tocright Music Low band , an American indie rock group from Duluth, Minnesota Low David Bowie album Low David Bowie album , 1977 Low Testament album Low Testament album , 1994 Low Low EP Low Low EP , 1994 Low Kelly Clarkson song Low Kelly Clarkson song , 2003 Low Cracker song Low Cracker song , 1993 Low Flo Rida song Low Flo Rida song , 2007 Low Foo Fighters song Low Foo Fighters song , 2002 Low Camp Mulla song , 2010 Low , a song by Coldplay on the album X&Y Low , a song by R.E.M. on the album Out of Time album Out of Time Low , a song by Silverchair on the album Young Modern People Abiel Abbot Low 1811 1893 , American entrepreneur and philanthropist Albert Peter Low 1861 1942 , Canadian geologist and athlete Archibald Low 1888 1956 , British scientist and inventor Dave Low died 1916 , Australian rules footballer David Low agriculturalist 1786 1859 , Scottish agriculturalist David Low cartoonist 1891 1963 , New Zealand political cartoonist Edward Low 1690 1724 , English pirate Frank J. Low 1933 2009 , American physicist G. David Low 1956 2008 , American astronaut George Low 1926 1984 , American NASA administrator George Low Medal of Honor born 1847 , U.S. Navy sailor Hugh Low 1824 1905 ... and current manager of the Germany national football team Norman Low 1914 1994 , Scottish footballer and football manager Rochelle Low born 1969 , Canadian field hockey player Seth Low 1850 1916 , American educator and politician Other uses Low complexity , a concept in computational complexity theory Low computability Low, Quebec , Canada LOW Festival , a cultural festival Low pressure area , a concept in meteorology Lo Wu Station , a rail station, MTR code LOW Louise Weiss building , the seat ... lunar occultations . See also Low Island disambiguation L w disambiguation L we disambiguation Lowe disambiguation disambiguation surname de Low es Low eo LOW fr Low it LOW nl Low ja pl Low ...   more details



  1. This Is a Low

    Song infobox Name This Is a Low Type Song Artist Blur band Blur alt Artist Album Parklife Published Released April 25, 1994 track no 15 Recorded 1993 Genre Britpop Length 5 07 Writer Composer Damon Albarn Label Food Records Producer Stephen Street Chart position Tracks prev Jubilee prev no 14 next Lot 105 next no 16 Misc Extra tracklisting Album Blur The Best Of Type compilation prev track On Your Own Blur song On Your Own prev no 15 this track This is a Low track no 16 next track For Tomorrow next no 17 This Is a Low is a song by English alternative rock band Blur band Blur for their third studio album, Parklife . Music and lyrics The song is in the key of E major ref name Parklife album booklet, page 16 Parklife album booklet, page 16 ref and is in Time signature 4 4 time . In total, the song contains two verses, two choruses, a guitar solo and two further choruses. The music commences with a four chord guitar progression, before moving straight into the first verse. The music is based in the mixolydian mode , highlighted by the fact the V chord B minor is minor instead of major. The song s lyrics reference a low pressure area of weather hitting Britain. The lyrics are based on the Shipping Forecast , with references made to the various areas surrounding the country. In the lyric sail on by with the tide , passing reference is also made to the tune Sailing By , which ends each day s broadcast of BBC Radio 4 . According to bassist Alex James musician Alex James in his 2007 autobiography Bit of a Blur, Damon was struggling with the words. For Christmas I brought him a handkerchief with a map of the shipping forecast regions on it... you can never tell where the muse is going ... , Long Forties Forties Up the Tyne, Forth and Cromarty There s a low in the High Forties Malin ... s End , as well as Blackpool and its famous lights and The Thames . Reception This Is a Low is often ..., this is proved by the surprise inclusion on Blur s Blur The Best Of Best Of compilation album. This Is a Low ...   more details



  1. Maximum density

    The maximum density of a Chemical substance substance is the highest attainable density of the substance under given conditions. Attaining maximum density Almost all known substances undergo thermal expansion in response to heating, meaning that a given mass of substance contracts to a low volume at low temperature s, when little thermal energy is present. Substances, especially fluid s in which intermolecular force s are weak, also undergo compression physical compression upon the application of pressure . Nearly all substances therefore reach a density maximum at very low temperatures and very high pressures, characteristic properties of the solid State of matter state of matter . Water see Water molecule Density of water and ice An especially notable irregular maximum density is that of water , which reaches a density peak at convert 3.98 C F . This has important ramifications in Earth s ecosystem . Fact date March 2007 Citation help is here http www.google.com search?&q Wetzel 3.98 Density of water References Unreferenced date December 2006 references Reflist See also List of elements by density Density Specific Gravity Specific weight Charge density Buoyancy Hydrometer Category Density Category Condensed matter physics Category Physical chemistry Category Physical quantities physical chemistry stub ...   more details



  1. Urban density

    density . Urban density is considered an important factor in understanding how cities function. Research related to urban density occurs across diverse areas, including economics, health, innovation, psychology and geography as well as sustainability . Urban density and sustainability File Revised petrol use urban density.JPG thumb A graph showing the relationship between urban density and petrol use. It is commonly asserted that higher density cities are more sustainable than low density cities ... experts on sustainable urbanism , including prominent urban designer Jan Gehl , argue that low density ...Urban density is a term used in urban planning and urban design to refer to the number of people inhabiting ... growth . However, the link between urban density and aspects of sustainability remains a contested ... the total energy consumption of a city and its overall urban density, i.e. the lower the density ... 1559636602 ref Measuring urban density Urban density is a very specific measurement of the population ..., agriculture and water bodies. There are a variety of other ways of measuring the density of urban areas ... on Residential density the number of dwelling units in any given area Population density the number of people in any given area employment density the number of jobs in any given area Gross density any density figure for a given area of land that includes uses not necessarily directly relevant to the figure usually roads and other transport infrastructure Net density a density figure for a given area of land that excludes land not directly related to the figure. Weighted density a density metric which measures the density at which the average citizen lives. It is determined by calculating the standard density of each census tract, assigning each a weight equal to its share of the total population, and then adding the segments. See also List of cities proper by population density Transportation ... conc8en urbanenergy.html Urban Density and Energy Consumption http www.planetizen.com node 23176 Deriving ...   more details




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