2.1 Thermal treatment of physical properties of polyethylene Märksõnad: polyethylene, thermal treatment, physical properties Otsiprofiilid: polyethylene AND thermal treatment polyethylene AND physical properties polyethylene AND properties polyethylene AND treatment polyethylene AND thermal AND treatment polyethylene AND physical AND properties 2.1.1 a) polyethylene AND thermal AND treatment: 1441 artiklit polyethylene AND physical AND properties: 7410 artiklit b) polyethylene AND thermal AND treatment: 143 artiklit kasutades Ei controlled terms Polyethylene AND physical AND properties: 866 artiklit kasutades Ei controlled terms 2.1.2 Malle Krunksile leidsin 60 artiklit 2.2 2.2.1 http://search.proquest.com/docview/230171400/13CC363D7D13127162A/1? accountid=28786 a) Jim Brown heads a management consulting firm, Tech-Clarity Inc. in Media, Pa. he also serves as the product lifecycle management specialist for the PLM Evaluation Center at Technology
Infootsing raamatukogu andmebaasidest 2.1. Otsing andmebaasist Compendex Engineering Village platvormil. 2.1.1. a) Thermal treatment and physical properties and polyethylene b) ((((thermal treatment) WN All fields) AND ((physical properties) WN All fields)) AND ((polyethylene) WN All fields)) c) 200 artiklit d) Thermal treatment and physical properties and polyethylene e) (((((thermal treatment) WN CV) ) AND ((physical properties) WN CV) ) AND ((polyethylene) WN CV) ) f) 4 artiklit 2.1.2 a) 69 artiklit 2.2. Otsing andmebaasist ProQuest Science Journals. 2.2.1 a) Jim Brown heads a management consulting firm, Tech-Clarity Inc. in Media, Pa. b) Valisin advanced search. Sealt sisestasin otsiprofiili "Tools for all jobs" in Document title. Tegin linnukese full texti ette, autoriks kirjutasin "Jim Brown". Dokumendi tüübiks valisin Article. 2.2.2 a) · laiemad märksõnad: environment
adhesiooniga. Polüetüleeni saadakse etüleeni polümeriseerumisel (Remichem, n.d.). Polüeteeni kaubanduslik kasutatavus on piiratud, kuna tema sulamistemperatuur on madal võrreldes teiste termoplastidega. Polüeteen ei ime vett üldse, gaas ja veeaurude läbilaskvus on madalam kui teistel plastidel. Päikesevalguse käes muutub polüetüleen rabedaks. Seda kasutatakse peamiselt pakendites (kilekotid, kilekiled, geomembraanid, konteinerid koos pudelitega jne) (Wikipedia, Polyethylene, n.d.). Polüeteen on klassifitseeritud mitmesugustesse kategooriatesse, peamiselt tiheduse ja hargnemise järgi (Vikipeedia, Polüeteen, n.d.). Eristatakse: HDPE (high density polyethylene)-kõrgtihe polüetüleen LDPE (low density polyethylene)-madaltihe polüetüleen LLDPE (linear low density polyethylene)-lineaarne madaltihe polüetüleen UHMWPE (ultra high molecular weight polyethylene)-ülikõrge molekulmassiga polüetüleen.
Making mountain skis · Although Estonia is geographically not best suited for mountain skiing, · The most common materials for the outer part of the skis are it is still quite popular. The largest market is perhaps in the United States, but also in mountainous parts of Europe. fiberglass, carbon fibers, or a type of epoxy. Polyethylene is the most · Throughout history, alpine skis have been made out of light wood, popular material used in the bottom part of modern skis. One of the usually hickory or ash, steel edges were introduced on the bottom for drawbacks of the polyethylene base is its softness, and with time the ski can
· Most common materials · The Manufacturing Process Different types · Laminated most common · Torsionbox more expensive · Singleshell lightest History · Light wood, usually hickory or ash · Depletion of inexpensive wood · Metal skis became common in the mid1950s · Aluminum bottom tends to freeze · Modern solutions Most common materials · Outer part of the skis fiberglass, carbon fibers, epoxy · Polyethylene in the bottom part · Coat of wax for maintaining polyethylene · Edges steel, usally hard tempered The Manufacturing Process · Milling the core - the material is put through a mill for precise cutting and finishing · Assembling the layers - the core and layers, are placed into a mold and then into a press. Heat and pressure result in a rudimentary ski, then epoxy resin is used to seal the layers together
ERINEVAD PLASTIKU TÜÜBID (Numbrit loe pakendi alt). Nr 1 PET; PETE (polüetüleen tereftalaat Polyethylene Terephthalate) on kõige laiemalt kasutusel olev plastik vee ja limonaadi, salatikastmete, mooside jt pakendites/pudelites. Päikese ja kuumaga kokkupuutel hakkab konteiner lagunema. See ei ole nähtav, aga kahjulikud kemikaalid vabanevad pudeli materjalist. Neid pudeleid ei tohi korduvalt kasutada. Materjal on poorne ning bakterid peetuvad seal kergesti. N2 HDPE (Kõrge tihedusega polüetüleen- High Density Polyethylene) on kasutusel
Ülesanne 2 Infootsing raamatukogu andmebaasidest 2.1. Otsing andmebaasist Compendex Engineering Village platvormil. 2.1.1 b) ((Thermal treatment of physical properties of polyethylene.) WN All fields) c) 189 artiklit e) (((((thermal treatment) WN CV) ) AND ((physical properties) WN CV) ) AND ((polyethylene) WN CV) ) f) 4 artiklit 2.2. Otsing andmebaasist ProQuest Science Journals. 2.1.2 a) 68 articles found in Compendex for 1969-2014: ((({KRUNKS MALLE}) WN AU) OR (({KRUNKS M.}) WN AU)) 2.2.1 a) Jim Brown heads a management consulting firm, Tech-Clarity Inc. in Media, Pa. b) Otsistrateegia : Kõige pealt kirjutasin otsingulahtrisse Tools for all jobs seejärel panin Advanced Search ja sealt kirjutasin teise otsingukasti Jim Brown ja panin in Autors-
Individuaalne töö nr 2 2.1 Otsing andmebaasidest Compendex Engineering Village platvormil. 2.1.1 Leia kompleksotsinguga Quick Search artikleid teemal Thermal Treatment of physical properties of polyethylene. a) ,,All Field" leidsin 158 kirjet b) ,,Ei controlled terms" leidsin 1 kirje 2.1.2 Leia Tehnikaülikooli teaduri Malle Krunksi Artikleid andmebaasis Compendex. a) Leidsin 55 artiklit 2.2 Otsing andmebaasist ProQuest Science Journal 2.2.1 Leia Jim Browni artikkel Tools of jobs a) Jim Brown juhatab Tech-Clarity Inc. In Media, Pa. b) Kasutasin Basic Search otsingut, kuhu sisestasin artikli nime. Leidsin ühe artikli,
MAIN POINTS History About the Company GrabCAD HISTORY Stratasys was founded in 1989, by S. Scott Crump and his wife Lisa Crump in Minnesota. IDEA He decided to make a toy frog for his daughter using a glue gun loaded with mixture of polyethylene and candle wax. The shape was created layer by layer and he tought the way to automate the process. In April 1992 Stratasys sold its first product, the 3D Modeler. In January 1995, Stratasys employed 16 former IBM engineers. By the year 2007, Stratasys was the unit market leader for the sixth consecutive year. In January 2010, Stratasys signed an agreement with HP to manufacture HPbranded 3D printers. In August 2012, the agreement was discontinued.
Melin, starting with the idea of Australian bamboo "exercise hoops". Hooping The past few years have seen the re- emergence of hula hooping, generally referred to as either "hoopdance" or simply "hooping" to distinguish it from the children's playform. An International Holiday World Hoop Day has become the hula hoop holiday celebrating the circle around the world. Many modern hoopers make their own hoops out of polyethylene tubing. They are much larger and heavier than hoops of the 1950s. The size and the weight of the hoop affects style of the hooper. Heavier, larger hoops are more often used for slow hooping and body tricks while lighter, thinner tubing is used for quick hand tricks. These hoops may be covered in a fabric or plastic tape to ease the amount of work in keeping a hoop twirling around the dancer, and can be very colorful. World records
Ülesanne 2 Infootsing raamatukogu andmebaasidest 2.1. Otsing andmebaasist Compendex Engineering Village platvormil 2.1.1.Leia kompleksotsinguga Quick Search artikleid teemal Thermal treatment of physical properties of polyethylene a) otsivälju "All Fields" - leidsin 176 kirjet b) otsivälju "Ei controlled terms"- leidsin 4 kirjet 2.1.2. Leia Tehnikaülikooli teaduri Malle Krunksi artiklid andmebaasis Compendex a) mitu artiklit leidsid? Leidsin 59 artiklit 2.2. Otsing andmebaasist ProQuest Science Journals 2.2.1.Leia Jim Browni artikkel Tools for all jobs. a) Ava artikli täistekst ja leia, millist firmat Jim Brown juhatab - Tech-Clarity Inc
emulsioonides ja teistes nahahooldustoodetes, mida on looduslikuks nimetatud.Tavaline etoksüülitud koostisosa sisaldab naatrium laureth sulfaati ja polüetüleenglükooli (PEG). Selleks, et neid aineid vältida, ära 3 kasuta tooteid, mis sisaldavad selliseid koostisained: myreth, oleth, laureth, ceteareth (või mõni teine -eth), PEG, polyethylene, polyethylene glycol, polyoxyethylene või oxynol. Naftakeemia ehk mineraalõlid on saadud toornaftast. Naftapõhised koostisained on liquid paraffin, paraffin wax, petrolatum (saadud mitteuuenevatest looduslikest allikatest). Mineraalõlid, petrolaatum jt on kõrvalproduktid, mis saadakse petrooleumist bensiini valmistamisel. Kuna see on kõrvalprodukt ja seda saadakse alati väga suurtes kogustes, ei maksa see peaaegu mitte midagi ja seetõttu kasutavad seda enamus
märksõnad (keyword), täpsustada sai ka autorit (author), pealkirja (title) ja publitseerijat (publisher). Samuti puudus võimalus täpsustada dokumenditüüpi (type of document), keelt (language) ja käsitluse tüüpi (type of treatment). Kui võtsin Referex'ilt linnukese eest, avanes otsiprofiilide sisestamiseks järgmine vaatepilt: Täpsustuse koha pealt selline vaatepilt: 2.1.1. Leia kompleksotsinguga Quick Search artikleid teemal Thermal treatment of physical properties of polyethylene. Moodusta otsiprofiil kasutades. a) otsivälju "All Fields". Mitu kirjet leidsid? Sisestasin terve lause ja sain 177 artiklit. Kui sisestasin otsiprofiili thermal treatment AND physical properties AND polyethene, leidsin 177 artiklit. b) otsivälju "Ei controlled terms" Mitu kirjet leidsid? Sisestasin terve lause ja sain 1 artikli. Kui sisestasin otsiprofiili thermal treatment AND physical properties AND polyethene, leidsin null artiklit. 2.1.2
kergemini. See materjal sobib suurepäraselt särksangaga ja auksangaga kottide jaoks. Loomulikul kujul on HDPE ilma läiketa ja matt, krabisev. Kasutusvaldkond: kile, kilekotid, palstpudelid/kanistrid. LDPE hakkab madalamal temperatuuril sulama, sest sellel on kergem molekule lõhkuda. HDPE'l on suurem tihedus, sest tema molekulid on lineaarse struktuuriga aga LDPE struktuur on hargnemisi. UHMWPE- Ultra-high Molecular Weight Polyethylene (Ülikõrge molekulmassiga polüetüleen) - seda kasutatakse põhiliselt konveieritel liugpindadeks ja muudel kulumiskindlust nõudvates kohtades. 6. Homopolümeer Kopolümeer Kasutatakse näiteks (plast)kile Kasutatakse kummiliimide ja ja anumate valmistamisel; vahtplastide valmistamisel; koosneb ühesugustest elem- koosneb erisugustest elem- entaarlülidest
korrosioonile). Kõrgtihe polüetüleen (HDPE) omab kõige lihtsama ehituse, sest koosneb korduvatest etüleeni ühikutest -(CH2CH2)n-. Madaltihe polüetüleen omab sama keemilist valemit, aga erineb sellega, et omab hargnenud struktuuri -(CH2CHR)n-, kus R on -H, -(CH2)nCH3 või keerulisema ehitusega (joonis 1). Lineaarse HDPE molekulkaal on 200 000 ... 500 000, saadakse ka ülikõrge molekulkaaluga (3 000 000 ... 6 000 000) polüetüleeni (UHMWPE, ultra high molecular weight polyethylene). LDPE madaltihe polüetüleen LLDPE lineaarne madaltihe polüetüleen HDPE kõrgtihe polüetüleen Joonis 1. PE struktuurid PE on poolkristalliline (kristalliinne) termoplast, mis tähendab, et:
17.05.2012 segatud plastikust tooted 13.10.2014 37 13.10.2014 38 Märgid (plast)pakenditel Märgid (plast)pakenditel PET või PETE (polyethylene terephthalate) HDPE (high density polyethylene) Eripära: Enimlevinud soodne plastik Eripära: Kõrge lekkivuskindlusega Kasutuskohad: vee -ja karastusjookide
When installed, the two barb fittings should be pointing at one another. You may find that the male end of the elbow sticks out about 1/4" on the inside of the 4" pipe. To remedy this I sanded down the excess with a Dremel and sanding drum. However, you may wish to use a bench grinder or sander to remove the excess before installing. Leaving the extra threads protruding will make it difficult to put project material into the chamber, once assembled. 6. Cut the polyethylene tubing to length. It should be able to be fitted onto both barb fittings while as straight as possible as shown in the picture. This tube will serve as a solvent "sight tube". It will show you how high your solvent is inside your chamber. Attach a small hose clamp to each end to ensure a positive seal on the barbed ends. About the sight tube... The site tube is merely there to check the fluid level. It's helpful in that if you know how wide
MATERIAL: TIRO TB L: S30251 TIRO TB L: S30253 TIRO TB L S13304 100% Polyester, plain weave, 475g, 100% BLACK/WHITE BOLD BLUE/WHITE POWER RED/WHITE Polyester, plain weave, 116g, 100% Polyethylene, re-order re-order re-order foam TRAININGWEAR / ACCESSORIES TIRO TEAMBAG BC SIZE S: 34.95 € SIZE M: 39.95 € SIZE L: 44.95 €
Nitroühenditel on suur tööstuslik tähtsus. Neid Nendest tuntuimad on polüetyleen, polüpropüleen, PVC konteinerite, pudelite vormimiseks. kasutatakse nii kõrgmolekulaarsete ühendite lahustitena ja polüstüreen; Polüpropüleen (PP) kui ka lisanditena kõrgtsetaansete diislikütuste 1. Väikese tihedusega PE (Low-density polyethylene, n CH2 = CHCH3 ................[- CH2 - CHCH3 - ]n tootmisel. Nitrobenseeni kasutatakse vaheproduktina LDPE) Sulamistemp. 175 C aniliinvärvide ja farmaatsiatööstuses. [- CH2 - CH2 - ] n Tänapaeval PP tootmiseks kasutatakse mitmeid
honeybees to produce honey from clover and fireweed. Industry Alberta is the largest producer of conventional crude oil, synthetic crude, natural gas and gas products in the country. Alberta is the world's 2nd largest exporter of natural gas and the 4th largest producer. Two of the largest producers of petrochemicals in North America are located in central and north central Alberta. In both Red Deer and Edmonton, world class polyethylene and vinyl manufacturers produce products shipped all over the world, and Edmonton's oil refineries provide the raw materials for a large petrochemical industry to the east of Edmonton. The Athabasca Oil Sands (sometimes known as the Athabasca Tar Sands) have estimated unconventional oil reserves approximately equal to the conventional oil reserves of the rest of the world, estimated to be 1.6 trillion barrels. With the development of new extraction methods such
Bituumenpaanid on membraanisarnased tugevalt anisotroopsete omadustega liitmarjalid. Nad koosnevad kandekihist, mis on bituumeniga immutatud ning seejärel kaetud kaitsekihiga. Kantakse seinale eriviisidel, kas kuumutades, keevitades, kleepides. [5] 8 2.2 Hüdroisolatsioonmaterjalide tutvustus 2.2.1 GRACE Bithuthene 4000 Bithuthene 4000 on tumehall-must elastne veekindel membraan, milles ristlamineeritud HDPE (high density polyethylene) membraan on ühendatud külmalt kleepuva kummibituumeniga. See tagab hea rebimis-, torke- ja löögikindluse. Membraani paigaldustemperatuur ulatub -100 °C kuni +350 °C. Võib kasutada nii horisontaalseks kui ka vertikaalseks vundamentide hüdroisolatsiooniks. Läbiviikude ja membraani lõppude tihendamiseks on saadaval lisatooted nagu LiquidMembrane, Mastic ja spetsiaalsed teibid. Enne membraani paigaldust tuleb aluspind tasandada ning kruntida lisamaterjaliga Primer 2
Parabeenid (alkyl parahydroxy Benzoates butyl/metyl/etyl/propyl/isobutyl paraben) parabeene kasutatakse säilitusainena. On avastatud nõrk vastumõju paljunemisvõimele ja soodustav mõju vähi tekkele (igapäevasest kasutamisest tulenevat mõju pole uuritud). Jälgida keemiliste ühendite nimetust, mille lõpus on "parabeen". Põhjustavad allergiat, naha ärritust, võivad olla mürgised, kogunevad organismi. Polyethylene Glycol (PEG)- kiirendab naha vananemist, nahkaärritav, vähendab naha kaitsevõimet bakterite ja mikroobide suhtes, tungib kudedesse. PPD (p-fenüleendiamiin, p-phenylenediamine) PPD kasutatakse värvainena. Seos vähi tekkega (eriti kosmeetikute puhul), mutageen ning nahaärritaja, allergeen, võib imenduda läbi naha. Leitud tumedates juuksevärvides ja nn. mustas hennas (kasutatakse ajutistes tattoo'des) ja värvainena.
thethriftshopper.com/sections/magazine/2007/mayimages/Galalith%20buttons.jpg (Alla laetud 9.11.2011.) [14] Kulu, P., Kübarsepp, J., Hendre, E., Metusala, T., Tapupere, O. Materjalid. (Loengukonspekt) Tallinna Tehnikaülikool, Tallinn, 2001. http://www.ene.ttu.ee/leonardo/materjalid/Materjalid.pdf (Alla laetud 9.11.2011.) [15] Bellis, M. Invention of Polystyrene and Styrofoam http://inventors.about.com/od/pstartinventions/a/styrofoam.htm (Alla laetud 9.11.2011.) [16] A Plastics Explosion - Polyethylene, Polypropylene, and Others. Packagingtoaday. http://www.packagingtoday.com/introplasticexplosion.htm (Alla laetud 8.11.2011.) [17] Bellis, M. Teflon. http://inventors.about.com/library/inventors/blteflon.htm (Alla laetud 8.11.2011.) [18] Polüetüleen. Veterinaar- ja toiduameti kodulehekülg. http://www.vet.agri.ee/static/body/files/881.Polyetyleen.pdf (Alla laetud 1.11.2011.) [19] Reiche, B. ,,Polly" the All Star Plastic. Popular Mechanics, USA, 1949. [20] Mieszkowski, K
103 Top Window Codend "BACOMA" 104 Wire scrape marks on flattened `soft' sediment with feeding trail mark evident. 105 106 107 108 109 Exhibit 7 Experimental Results Tricolor Elite Regular Type of Polyethylene High Tenacity % change Braided Netting Braided Gear Tension (kg) 3150 2,890 8.3% Door Spread (m) 35.4 37.3 +5.4% Wing Spread (m) 14.66 14.77 +0.8% Headline Height (m) 5.88 6.04 +2.7
12.12) Brookscole, 2012. The chemical structure of soap. http://www.brookscole.com/chemistry_d/ templates/student_resources/0030012910_kotz/appchem/ch11/carbon10.html (kasutatud 09.11.12) Chemblink, 2013. Benzyl salicylate. http://www.chemblink.com/products/118-58-1.htm (kasutatud 06.01.13) Chemblink, 2013. Pigment red 5. http://www.chemblink.com/products/6410-41-9.htm (kasutatud 04.01.13) Chemical book, 2008. Nonylphenol polyethylene glycol ether (9016-45-9). http://www.chemicalbook.com/ProductMSDSDetailCB1159958_EN.htm (kasutatud 04.01.13) Chemicalland21, 2013. Tetrasodium Ethylenediaminetetraacetate. http://chemicalland21.com/lifescience/foco/TETRASODIUM %20ETHYLENEDIAMINETETRAACETATE.htm (kasutatud 01.01.13) Columbus foods, 2002. Lanolin. http://soaperschoice.com/soapoils/lanolin.html (kasutatud 04.01.13) Cosmetics info, 2012
increased number of turns of the helix, additional turbulence is generated inside the tube and therefore the heat transfer coefficient of the helical coil is larger that of the corresponding straight tube. In chemical industries there are many applications, which use coils as heat exchangers such as in small nonindustrial boiler systems where water is heated up or steam is generated inside the helical coil by direct heating via burning fuel such as diesel oil or other burning materials. Polyethylene is also manufactured inside helical coils, where oxidation of ethylene takes place. The heat from this exothermic reaction is taken away by cooling water circulating around the helical coils. In many industrial applications helical coils are used to heat up cold liquid circulating around the coils, by steam condensation inside the coil. In addition to heating up the liquid around, coils can also be used to cool it down, if the bulk
safety, and sensory properties, without direct potassium sorbate into a coating material addition of active agents to the product (Limjaroen et al. 2003). Antimycotics and (Camo et al. 2008). Inclusion of the active antimicrobials have been added to food pack- agents, be they antioxidants, antimicrobials, aging films to delay outgrowth of mold. or any other, within the packaging material Potassium sorbate release from low-density 256 Chapter 13 polyethylene (LDPE) and high-density poly- dation in beef, leading to the enhanced ethylene (HDPE) films has been studied in display life of the meat. Additionally, Camo food systems. In such systems, release rates et al. (2008) investigated and compared the and migration amounts must be closely mon- effect of two natural antioxidant sources itored for the system to effectively preserve (rosemary and oregano extracts) incorpo- the contents of the package (Han 2000)
ucts in a vast national network of door-to-door neighborhood sales. The company, which has grown from a basement-run operation to a $1.5 billion yearly sales busi- ness, makes use of the free sample in a device called the BUG. The BUG consists of a collection of Amway products-bottles of furniture polish, detergent, or shampoo, spray containers of deodorizers, insect killers, or window cleaners-carried to a cus- tomer's home in a specially designed tray or just a polyethylene bag. The confiden- tial Amway Career Manual then instructs the salesperson to leave the BUG with the customer "for 24, 48, or 72 hours, at no cost or obligation to her. Just tell her you would like her to try the products ....That's an offer no one can refuse." At the end of the trial period, the Amway representative is to return and pick up orders for the products the customer wishes to purchase. Since few customers use up the entire
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