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What to Do When You Lose a Filling from Your Tooth. Earlier this week, I wrote about what you should do when a crown falls off. If you’re planning ahead and trying to make a dental first aid kit, then it may be a cheaper option to buy online. These are all different brands of pretty much the same thing. Make sure you get an appointment to see your dentist as soon as possible. Conclusion. When you lose a filling, make sure you take care of the tooth and call your dentist. Why Do I Have A Crack In My Fingernail Fell Off Will It GrowIf it hurts, you can take some pain medicine, but you should probably go get some temporary filling material to fill the tooth until you can see your dentist. Mommy On My Lap Ch. Incest/Taboo. She was wearing her favourite Venosan Ultima Lycra- Nylon Leggings. The sheer fabric moulded to her cunt and it was obvious she wasn't wearing panties underneath. Her feet were bare and she wore a loose fitting vest, which was slack enough for me to see her satin bra through the armhole. My cock was hard and despite my best efforts I couldn't take my eyes off her. We were both pretending to watch TV but we were very aware of each other. Her perfume wafted across the room. Why Do I Have A Crack In My Fingernail Fell Off And Is GrowingI could hear mom rummaging around in the kitchen. She licked her lips and contemplated the erection pushing at the front of my shorts. Shelly pushed a finger into her pussy; the lycra tights would only allow it to enter a little, but god it looked so sexy. I stroked my cock through my shorts and Shelly grinned. We had fucked most of the night away and I wanted to fuck her again tonight but mom said she had to go out as she had already made the date. She didn't want either of us behaving differently now that we were lovers; she didn't want to raise anyone's suspicions. Mom stood beside me and I wondered if she did it on purpose. Her skirt was very short and I could just see the dark band of her control- top pantyhose. I sneaked a finger out and stroked her leg but mom pushed it away and gave me a scowl. According to police, Best’s loved ones just want his possessions back, describing them as important to the family. Portland Police have released surveillance. Everything you ever wanted to know about cork flooring all in one place. I have tried most of the suggestions here with only minor success. Six months ago I came across a Bulgarian discussion on the same topic and one of the solutions. It’s increasingly difficult to do anything on your phone nowadays without sharing your geolocation information. Certain Snapchat filters, Facebook status updates. ![]() It's not all plain-sailing! Full-steam ahead for Ivanka in a nautical-themed shirt as it emerges she is desperate to lower expectations of what she can do in her dad. If you would like a response, enter your email address in this box: Please type in the security code You may also listen to a recording of the characters. To write with a broken pencil is pointless. What's the definition of a will? Even though Shelly couldn't see me do it I knew it was dangerous.? She must know what mom and I had been up to in the back of her car! A horn hooted from outside and mom gave me a 'don't worry; nothing will happen' look and kissed me primly on the cheek and wiped away the lipstick she left there with her thumb. She smiled at Shelly. I freed my erection from my shorts and bought a pair of mom's soiled panties to my face; I wrapped my cock in a pair of Shelley's panties and frantically masturbated. I filled my sister's panties with creamy sperm in about thirty seconds and cleaned up the mess; burying the soiled panties at the bottom of the laundry basket. I went to my room and surfed the net for about an hour or so, trying not to look too often at the time. Ten o'clock couldn't come around fast enough. I wanted to fuck my mother again! I went down stairs about an hour later to get my dinner and was surprised to see that my sister was still here. She was lounging on the couch again, in the same position as before. I was wearing a pair of shorts and was barefoot and shirt- less. I took her in. Her bottle- blonde hair had been teased out and framed her pretty face which was heavily made up; black mascara and eyeliner, mauve eyeshadow, rouged cheeks and ruby- red lipstick glistened her lips. She was wearing a blue mini- dress, the long sleeves and shoulders were made of semi- transparent black nylon material; the dress itself was a blue spandex blend and clung to her body like a glove. The hem rested at the top of her thighs; her legs were swathed in expensive 1. Her feet were shod in four- inch black patent leather 'fuck- me' pumps. She looked hot and my cock began to engorge, seeing her dressed that way sprawled on the couch, legs akimbo. She had been drinking; a half- empty bottle of Shiraz rested on the coffee table and she was gulping a glass of the dark red liquor. Her eyes drifted across the room and met mine as she sensed my presence. He stood ME up! My prick teasing, sanctimonious, self- centred sister had been stood up! It was poetic justice. Shelly gulped down the last of her wine and poured herself another glass, as she sat up to pour the wine her legs parted and I could see up her skirt; her slim thighs, encased in the sheer taupe nylons led my eyes to her crotch. She was wearing red satin panties; clearly visible through her sheer- to- the- waist pantyhose, her ample breasts clung to the translucent material of her dress, the matching bra just visible. My cock twinged.! They only have one thing on their fucking mind! I'm your fucking sister for god sake! Guilty because you watched me fuck that guy at the wedding last night; guilty because you watched me masturbate while you hid in the bougainvillea. But probably mostly guilty because you are fucking our mother!! And then you went to her room and rutted all night; I came to the bedroom door and listened,? An attractive woman in her forties, fucking her grown up son. Her own son for fuck sake!? Expose you both? Blackmail mom? Blackmail you? When you wank into my pantyhose later, which you are sure to do, please don't put a runner in them; they're expensive. You'll have to wait for our mother to come home. I managed to get my legs between hers and pried them open and thrust forward so my hard cock was rubbing against her groin. Her skirt had ridden up and my cock, still trapped in my shorts, rubbed against her panty and pantyhose clad mound. I groaned and inhaled her perfume. I lowered my face to hers and she turned away from me. I squeezed her wrists and her head sprang back. I lowered my face to hers and crushed my lips against hers. Her legs writhed in the air and she tried to buck me off her, her fists hammering my back. I slid my tongue into her mouth and she gave a muffled groan. I realised that if she actually wanted to, she could really hurt me. She could rake me with her nails as I was only wearing shorts, she could bite my tongue, and she could knee me in the balls. She was putting up a sham struggle and we both knew it. I reached down and freed my cock; it sprang out of my shorts and rubbed on Shelley's sleek, hosed thighs; I could feel my pre- seminal fluid soaking into the sheer nylon. Her legs were now wrapped around my torso; rubbing on my sensitive skin, spurning me on. The hem of her dress was up around her hips; the sheer bodice slid against my chest; this was the most intense feeling I had ever felt. Her hot, wine- laden breath panted into my mouth, her perfume pervaded my nostrils. I growled; the sound resonating from the back of my throat. Shelley rose to meet my thrusts. Her makeup was smeared; her eyes black and smoky where her mascara and eyeliner had run; she looked like a whore. She looked hot! I lowered myself onto her again. The wine she had drunk was obviously effecting her; but I didn't care. I wanted her. My cock was rampant, rubbing on her pantyhosed thighs, which although delightful, would soon bring me to orgasm and I didn't want that yet. I moved my cock so it rested in the V of her crotch; it now rubbed on the front panel of her slippery satin panties. Shelly put a hand down there and adjusted me so that my cock slid inside her panties and rested in the folds of her labia; only the diaphanous material of her pantyhose gusset prevented it from entering her. She groaned and writhed under me and I felt her cunt lubricating; her sweet juices lubricated the head of my cock as her pantyhose gusset became saturated; the musky smell of cunt wafted from her. Her tongue was wriggling and thrusting in my mouth and she kept squirming to keep my cock in the folds of her pussy lips. I heard the gossamer material tear and then my sister's hand wrapped around my shaft. She guided the head of my penis into the hole she torn out of her pantyhose gusset. My glans snuggled in the sweet, slick folds of my sister's cunt. She raised her derriere and I thrust forward. I slid into my sister's sweet buttery cunt; impaling her on my cock. Shelley pushed back against me and began to buck. I couldn't believe it! I was fucking my beautiful, cock- teasing sister. I grasped her hips and began to grind myself against her so that her nylon- clad thighs rubbed against the delicate skin my own thighs. My sister lifted her buttocks up off the lounge and wriggled her crotch; her sopping vagina squeezed my shaft, it was devine. She was much tighter than my mother. With reluctance I pulled my cock all the way out of her velvety tunnel. I was close to coming and I wanted to do a little teasing of my own. I rubbed my glans on her hard clitty and she yelped and wriggled. She was gasping with lust. She reached up for me. Fuck your sister Mike! She wrapped her arms around me and lifted her legs and wrapped them around my lower back. She kissed me and let her tongue slide inside my mouth. She broke the kiss and bit my earlobe and then she drove her tongue into my ear. My cock filled her tight snatch and then my groin ground against hers; the base of my thick cock stimulated her clitoris and she ground her crotch against mine and began to fuck me. She controlled the rhythm, gradually increasing the pace until our bodies were slamming together making 'schlock- schlock- schlock' sounds as our bodies slammed into each other. She made sure that I kept stimulating her clitty, wriggling her sexy ass to keep the pressure of the base of my cock on her sensitive bud. I was close to coming; my senses were overloaded; my cock was throbbing inside my sister's tight tunnel; the feel of her body against mine, the taste of her mouth, the smell of her sex mingled with her perfume, the sensation of her pantyhose- clad legs sliding along my flanks and back, the scratching of her high- heels as she encouraged me to fuck her faster. Shelley dug her heels into me, using them like spurs. I felt my cock begin to spasm and Shelley knew that I was about to come; she pulled my face to hers and kissed me and lifted her crotch up off the lounge and ground her pubis against mine; she writhed shamelessly underneath me and I felt her release approaching. I groaned and my cock exploded; hot streams of semen spurted from my spasming cock and I went into an orgasmic paroxysm. She gripped my buttocks and squeezed, digging in her nails and pulling my groin hard against hers; her pulsating vagina milked me of my seed. I ran my hands along my sister's legs enjoying the feel of her silken- hosed legs on my body. She responded to my kisses, entwining my tongue with hers; my scrotum contracted, propelling the last of my issue deep inside her. Shelley writhed and wriggled underneath me; she raked my back with her fingernails and grazed my flanks and lower back with her heels. ![]() ![]() ASRock is no stranger to mini-PCs. Their Vision series (using custom mobile processor-based motherboards with an optional discrete mobile GPU), larger than the NUCs. This page contains the list of HP drivers available for download. To download the proper driver, please find the category of your HP device and click the link. HP 2133 Mini-Note PC netbook (front view, compared to a pencil). Netbook - Wikipedia. Netbook. HP 2. 13. Mini- Note PC netbook(front view, compared to a pencil)Type. Laptop computer. Inception. A low- cost Craig netbook with Android. Netbooks compete in the same market segment as tablet computers and Chromebooks (a variation on the portable network computer). At their inception in late 2. Over the course of their evolution, netbooks have ranged in size from below 5. A typical weight is 1 kg (2. Often significantly less expensive than other laptops. By August 2. 00. 9, when comparing a Dell netbook to a Dell notebook, CNET called netbooks . With the rise of Chromebooks in 2. Microsoft began a new effort at creating viable netbooks, with Windows 8. Bing. HP re- entered the non- Chromebook netbook market with the Stream 1. Apple also had a line of Power. Book Duos that were ultra- portable Macintosh laptops in the mid 9. More recently, Psion's now- discontinued net. Book line, the OLPC XO- 1 (initially called US$1. Palm Foleo were all small, portable, network- enabled computers. Originally designed for emerging markets, the 2. And while the OLPC XO- 1 targets a different audience than do the other manufacturers' netbooks, it appears that OLPC is now facing competition. Developing countries now have a large choice of vendors, from which they can choose which low- cost netbook they prefer. This is illustrated by the fact that typical system performance of a netbook is on the level of a mainstream PC in 2. While this performance level suffices for most of the user needs, it caused an increased interest in resource- efficient applications such as Google's Chrome, and forced Microsoft to extend availability of Windows XP to secure market share. It is estimated that almost thirty times more netbooks were sold in 2. Europe). These were provided under Prime Minister Kevin Rudd's Digital Education Revolution, or DER. The netbooks ran Windows 7 Enterprise. These netbooks were secured with Computrace Lojack for laptops that the police can use to track the device if it is lost or stolen. The NSW DET retains ownership of these netbooks until the student graduates from Year 1. The Government of Trinidad and Tobago—Prime Minister Kamla Persad Bisseser—is also providing HP laptops to form 1 Students (1. Greece provided all 1. Students were given one unique coupon each, with which they redeemed the netbook of their choice, up to a . These netbooks came bundled with localised versions of either Windows XP (or higher) or open source (e. Linux) operating systems, wired and wireless networking functionality, antivirus protection, preactivated parental controls, and an educational software package. Microsoft and Intel have tried to . The companies have limited the specifications of netbooks, but despite this original equipment manufacturers have announced higher- end netbooks models as of March 2. Buyers drove the netbook market towards larger screens, which grew from 7 in (1. Asus Eee PC 7. 00 to 1. While Steve Jobs rebuked the netbook at the i. Pad's introduction, the i. Pad owes a bit of debt to the little laptops. The netbook demonstrated the potential of an inexpensive, portable second computing device, with a screen size of about 1. Dvorak in PC Magazine claimed that the term . Chromebooks, a variation on the network computer concept, in the form of a netbook, require internet connections for full functionality. Chromebooks became top selling laptops in 2. The threat of Google Chrome OS based Chromebooks prompted Microsoft to revive and revamp netbooks with Windows 8. Bing. HP re- entered the non- Chromebook netbook market with the Stream 1. Trademark 7. 5,2. Trademark 7. 5,2. Psion's statement said that the company was withdrawing all of its trademark registrations for the term . Some netbooks do not even have a conventional hard drive. Mobile data plans are supplied under contract in the same way as mobile telephones. Currently, one netbook uses the Nano; the Samsung NC2. Some very low cost netbooks use a system- on- a- chip. Vortex. 86 processor meant for embedded systems, just to be . In 2. 01. 1, AMD launched Fusion netbook processors which are included in Asus Eee PC 1. T and many others. For comparison a common dual- core Core 2 Duo T5. GHz with 2 MB L2 cache used in low- end laptops has a Pass. Mark score of about 1. The following table shows benchmarks for most common netbook CPUs. In particular, the recent ARM Cortex- A9 MPCore series of processor cores have been touted by ARM as an alternative platform to x. Smartbooks promised to deliver features including always on, all- day battery life, 3. G connectivity and GPS (all typically found in smartphones) in a laptop- style body with a screen size of 5 to 1. QWERTY keyboard. These systems do not run traditional x. Microsoft Windows, rather custom Linuxoperating systems (such as Google's Android or Chrome OS). These include the Skytone Alpha- 4. As Linux systems normally install software from an Internet software repository, they do not need an optical drive to install software. As of August 2. 01. The reason for this change of stance is unclear, although it coincides with the availability of a 'netbook' version of Windows XP, and a later Windows 7 Starter and a strong marketing push for the adoption of this OS in the netbook market. However, companies targeting niche markets, such as System. Za. Reason, continue to pre- install Linux on the devices they sell. Netbooks have sparked the development of several Linux variants or completely new distributions, which are optimized for small screen use and the limited processing power of the Atom or ARM processors which typically power netbooks. Examples include Ubuntu Netbook Edition, Easy. Peasy, Joli OS and Mee. Go. Both Joli OS and Mee. Go purport to be . In comparison to Home Premium, Starter has reduced multimedia functionality, does not allow users to change their desktop wallpaper or theme, disables the . Additionally, Microsoft began to offer low- cost licenses for a variant of the operating system set up to use Microsoft's Bingsearch engine by default. Google has made efforts to provide access to the Android ecosystem within Chrome OS, including the 2. Google Play Store and a compatibility layer for Android applications to the platform. The platform is designed to leverage online services, cloud computing, and its namesake Chromeweb browser as its shell—so much so that the operating system initially used a full screen web browser window as its interface, and contained limited offline functionality. It was first announced at Mobile World Congress in February 2. Intel and Nokia in a joint press conference, with the stated aim being to merge the efforts of Intel's Moblin and Nokia's Maemo former projects into one new common project. It is programmed in C++ and comes from Linux OS Family. It was initially released on 2. May 2. 01. 0. The latest stable release available is 1. May 2. 01. 1. Official website http: //www. As of 2. 7 September 2. Mee. Go has ceased in favour of the newer project Tizen. Official website http: //www. Netbooks have been demonstrated running other operating systems including Free. BSD, Net. BSD, Open. BSD, and Darwin. The user interface is limited to a browser application only. Mac OS X has been demonstrated running on various netbooks as a result of the OSx. The principal objection to netbooks in this context is the lack of good video performance for streaming online video in current netbooks and a lack of speed with even simple games. Adults browsing for text content are less dependent on video content than small children who cannot read. Netbooks in education. The need to prepare children for 2. First, their compact size and weight make for an easy fit in student work areas. Similarly, the small size make netbooks easier to transport than heavier, larger sized traditional laptops. In addition, prices ranging from $2. Despite the small size and price, netbooks are fully capable of accomplishing most school- related tasks, including word processing, presentations, access to the Internet, multimedia playback, and photo management. Smartbooks will tend to be designed to work with online applications. The Wall Street Journal. Business Technologies blog. December 8, 2. 00. Retrieved 2. 00. 9- 0. The New York Times. Retrieved 2. 01. 0- 0. The Guardian. Retrieved 2. Retrieved 2. 0 June 2. Those 1. 0- and 1. Ultrabook laptops and smaller- screened tablets, they've been disappearing from the computer landscape. One significant 1. Mac. Book Air. When it debuted in late 2. Netbook Generation. Now it stands alone, not only as a speedy ultraportable, but as one of the few 1. Ultrabook- class laptops around. The closest Windows equivalent we've reviewed recently, the Dell XPS 1. Ultrabooks, PC Magazine^Enterprise Mobility: Ultrabooks Will Succeed Where Netbooks Failed: 1. Reasons Why, e. Week^The Ultrabook Revolution, PC World, Aug 2. Where Did All the Netbooks Go? Dvorak, August 2. PC Magazine^i. Pad vs ultrabook vs netbook: Which is right for you?, CNET UK.^Asus (and the rest) won't make any more in 2. The Guardian^ abc. Andrew Cunningham (6 December 2. Ars Technica. PC Magazine. Retrieved 2. 00. 8- 1. Retrieved 2. 01. 3- 1. Digitalaid. gr. Retrieved 2. Computerworld. Retrieved 2. Retrieved 2. 01. 0- 0. Seattle Times. The Prognosis Is Grim Netbook sales are declining precipitously. By Loyd Case, PC World, Feb 2. Engadget. com. Retrieved 2. Trademark 7. 7,5. G NETBOOK' rejected 3. October 2. 00. 8.^U. S. Trademark 7. 7,5. MSI's 'WIND NETBOOK'^U. S. Trademark 7. 7,5. Coby Electronics' 'COBY NETBOOK' rejected 1. January 2. 00. 9.^How To Lose A Trademark: “Netbook” Is Probably Generic. Patent Hands. Wired (magazine). Retrieved 2. 00. 9- 0. Retrieved 2. 00. 9- 0. Electronista. Retrieved 2. Processor Discussions. Retrieved 2. 01. 1- 0. Hardware Central. Retrieved 2. 01. 1- 0. Prospero on August 1. Laptopmag^Gateway LT3. Cisco Cheng, PC Magazine^Gateway LT3. Review By Catharine Smith, reviewed August 2. Computer Shopper US^Ken Mingis (2. Mac. Book Air: Don't call it a netbook. Computerworld. Retrieved 2. Cpubenchmark. net. HP Store Laptops, Desktops, Printers, Tablets & More. Prices, specifications, availability and terms of offers may change without notice. Price protection, price matching or price guarantees do not apply to Intra- day, Daily Deals or limited- time promotions. Quantity limits may apply to orders, including orders for discounted and promotional items. Despite our best efforts, a small number of items may contain pricing, typography, or photography errors. Correct prices and promotions are validated at the time your order is placed. These terms apply only to products sold by HP. Items sold by HP. Orders that do not comply with HP. Contract and volume customers not eligible. HP’s MSRP is subject to discount. For more information about Microsoft’s support, please see Microsoft’s Support Lifecycle FAQ at. In- home warranty is available only on select customizable HP desktop PCs. Need for in- home service is determined by HP support representative. Customer may be required to run system self- test programs or correct reported faults by following advice given over phone. On- site services provided only if issue can't be corrected remotely. Service not available holidays and weekends. HP will transfer your name and address information, IP address, products ordered and associated costs and other personal information related to processing your application to Bill Me Later. Bill Me Later will use that data under its privacy policy. Ultrabook, Celeron, Celeron Inside, Core Inside, Intel, Intel Logo, Intel Atom, Intel Atom Inside, Intel Core, Intel Inside, Intel Inside Logo, Intel v. Pro, Itanium, Itanium Inside, Pentium, Pentium Inside, v. Pro Inside, Xeon, Xeon Phi, and Xeon Inside are trademarks of Intel Corporation in the U. S. Systems may require upgraded and/or separately purchased hardware, drivers and/or software to take full advantage of Windows functionality. See http: //www. microsoft. Microsoft Windows 1. Not all features are available in all editions or versions of Windows 1. Systems may require upgraded and/or separately purchased hardware, drivers, software or BIOS update to take full advantage of Windows 1. Windows 1. 0 is automatically updated, which is always enabled. ISP fees may apply and additional requirements may apply over time for updates. See http: //www. microsoft. Intel Processor: Intel's numbering is not a measurement of higher performance. AMD Processor: AMD's model numbering is not a measurement of clock speed. Dual/Quad/Triple Core is a new technology designed to improve performance of multithreaded software products and hardware- aware multitasking operating systems and may require appropriate operating system software for full benefit. Not all customers or software applications will necessarily benefit from use of this technology. Hard Drive: Actual formatted capacity is less. A portion of the hard drive is reserved for system recovery software — for notebooks up to: 3. GB (Windows 8. 1 & Windows 7), 1. GB (MCE); for desktops up to: 3. GB (Windows 8. 1), 1. GB (Windows 7), 1. GB (MCE). For hard drives and storage drives 1. GB = 1 billion bytes and 1. TB = 1 trillion bytes. HD (High Definition) content required to view HD images. Blu- ray Drive requires the following disclaimer: As Blu- ray is a new format containing new technologies, certain disc, digital connection, compatibility and/or performance issues may arise, and do not constitute defects in the product. Flawless playback on all systems is not guaranteed. In order for some Blu- ray titles to play, they may require a DVI or HDMI digital connection and your display may require HDCP support. This Blu- ray drive does not support writing to ultra- high speed CDRW media (1. X to 3. 2X advertised performance). HD- DVD movies cannot be played on this PCWireless LAN: Wireless access point and Internet service required and not included. HP ProLiant DL380 G4 Storage Server. Introduction: The HP ProLiant DL380 G4 Storage Server is a network attached storage (NAS) solution with multi-protocol file. HP ProLiant Server Updates through System Center Configuration Manager 2007 Software Distribution Contents Introduction. HP’s flagship rack server gets the Gen9 treatment and shows off Intel’s new E5-2600 v3 Xeons. Computer Servers, Workstations & Home Servers. Newegg. com - A great place to buy computers, computer parts, electronics, software, accessories, and DVDs online. With great prices, fast shipping, and top- rated customer service - once you know, you Newegg. If you are reading this message, Please click this link to reload this page.(Do not use your browser's . Install Microsoft Windows Server 2003 Service Pack 1 (SP1) to help secure your server and to better defend against hackers. Windows Server 2003 SP1 enhances security. Shop Desktop Workstations and Servers from Lenovo, HP, Dell, Fujitsu, Wyse and more with the best prices and fast shipping. Once you know, you Newegg. ![]()
Siemens Nx CAD Basic Modeling Training Tutorial for Beginner - 1 . This tutorial shows step by step how to create model in Siemens Nx. Interview Questions and Answers, Job Interview Tips, Advice, Guide. Introduction. Please note that most of these Brand Names are registered Trade Marks, Company Names or otherwise controlled and their inclusion in this index is. Free Ebooks Akira Manuel Antonio quinlan vos jedi in darkness stardust kapitel geschichte gesichts retouched still life painting atelier an introduction.![]() ![]() The HERA project is a European voluntary initiative launched by the suppliers and manufacturers, AISE and CEFIC, of household cleaning products to provide a common. Fawley Refinery and Petrochemical Plant, located in Fawley, Hampshire, is the largest integrated facility of its kind in the UK. It was opened in 1951. The facility. The four coking drums of the new delayed coker stand prominently in the complex's east plant. The enclosed coke-conveyer system stretches to the Mississippi River. The Incredible Process of Turning Crude Oil into Jet Fuel. The oil industry is booming stronger than ever. ![]() Crude oil is the base product for a large majority of products on Earth; Fuels, plastics, roads, and much more rely on the extraction and refinement of crude oil. Although companies are devising new methods to eradicate the necessity of fossil fuels, most countries remain reliant on the massive oil industry. However, converting sludge into enough fuel to meet humanity’s demands requires an extensive network of oil refineries. Most people understand crude oil as the dino- goop that is extracted from the ground. Although, a much lesser known fact is the remarkable process that permits the conversion of crude oil into jet fuel. For once, the movies got it right – oil products begin their journey far into the reaches of the ground as a thick black liquid. Crude oil, the raw base of most fuels, contains a mixture of hydrocarbons ranging from kerosene to gasoline. The Sines refinery began operating in 1978. This strategic industrial unit, which is vital to Portugal’s economic activity, is strategically located in Sines port. Refining, gas and petrochemical processing industry articles. Regulators are highly technical, highly specialised fluid-handling components. The chemicals bear similar resemblance, although for them to be of any use, they need to be refined. The process of refining crude oil requires a few basic steps and a little knowledge of chemistry. When oil arrives at the refineries, it contains a mixture of fuels that can be extracted through several industrial processes. Almost every refinery uses a series of similar steps to extract the various types of fuels contained within crude oil. The process calls for Distillation, Cracking, Treating, and Reforming. Distillation. The composition of crude oil contains a plethora of fuels that need to be separated before the products can be of any use. Each hydrocarbon within the oil has a specific boiling point and molecular mass. Using this property, specific types of oil can be extracted with a high degree of precision by using what us known as a distillation column. Distillation Columns. Oil refineries are renowned for their massive metallic towers. Although the towers appear rather basic from the outside, they serve as a critical component in the oil refining process. The main function of the tower is to separate the oil based on molecular structure and composition. As previously mentioned, different types of products in oil have different boiling temperatures. With this feature in mind, engineers have devised a distillation tower that can extract different products within crude oil based on their chemical properties – specifically their boiling point. How it works. The process begins by transporting oil into massive heaters that causes the substance to evaporate. Since each product within the oil has a different mass and boiling temperature, the products can be made to precipitate from a gas into a liquid at varying levels inside a distillation column. Separating and collecting products from crude oil. At the bottom of the distillation column, the oil is heated to a balmy temperature of 3. Degrees Celsius. At the top, the column remains at a much lower 1. Degrees Celsius. The temperature gradient is imperative to the distillation process. As vapor travels through the column, it begins to cool until it precipitates back into a liquid once it cools below its boiling temperature. Large perforated trays span the column at strategic points that line up with the precipitation points. The small perforations in the tray allow the vapor to continue to rise up while collecting the liquids as they precipitate back into a liquid at a specific level. Since each product within crude oil has a different boiling point, different oil types will collect separately on specific trays. The lighter products, like propane and butane, rise to the top of the column. Slightly heavier products like gasoline, jet fuel and diesel fuels, collect and condense in the middle. The heaviest of the molecules, known as gas oils, condense towards the lower portions of the distillation column. At the very top of the column is a pipe that extracts the excess gasses and uses it as fuel to power the heaters that evaporate the oil entering the distillation column. Distillation Column in use at oil refineries. However, reducing residual products from the distillation process increases profits for oil refineries, giving the incentive to maximize their profits by minimizing their waste. A thick black residual oil remains at the bottom of the distillation column after the other fuels have been extracted through the distillation process. However, the residue can be re- processed through another series of distillation columns that exists under lower pressures to further enhance the evaporation and separation of the oil. The extra processes ensure the refineries produce minimal waste products. Cracking. Maximizing profits requires maximizing the yield of high- value products. The thick residue that is left over from the distilling process contains larger hydrocarbon chains. However, the longer hydrocarbons are significantly less valuable than the lighter distillates. The biggest difference between products is not their atomic composition, but rather, the length of their molecular structure. Heavier crude oil products have longer (but similar) chains to the lighter (and more valuable) short- chain fuels. Oil refineries try and maximize profits by splitting the larger chains into smaller ones of greater value.“At the Pascagoula Refinery, we convert middle distillate, gas oil and residuum into primarily gasoline, jet and diesel fuels by using a series of processing plants that literally “crack” large, heavy molecules into smaller, lighter ones.” states the oil refinery company, Chevron. Splitting the longer chains requires the addition of a catalyst – a material that reduces the amount of energy needed to break a bond – and of course, heat. There are three processes that can break down the molecular structure of oil: Fluid catalytic cracking (FCC), hydrocracking (Isomax), and coking (or thermal- cracking). Catalytic Cracking. Catalytic cracking splits longer chains by introducing a catalyst and increasing temperatures. The catalysts prompts the long chains to change molecular structure by “cracking” the chains. The process is ideal for manufacturing gasoline. The system, however, remains under high pressure and temperatures to ensure smaller sections of chains are broken. As a result, the method can produce both jet fuel and gasoline. The Coker processes low- value residuum and converts it into higher- value products. Large coke drums contain the residuum under high temperatures for prolonged periods of time. Eventually, the large molecules once again “crack” into smaller chains. The leftover product is known as petroleum coke and is predominantly used as a fuel source or cement agent. Combining. While the main purpose of the cracking methods is to break molecules down into smaller segments, combining involves the opposite function. The cracking process generates some molecules that are lighter than gasoline. Many refineries specialize in the production of transportation fuels, making the extremely small chains of no particular value as they stand. However, there exists a process that reverses the effects of cracking, causing the small chains to expand. For combining to occur, sulfur and an acidic catalyst are added to convert the small chains into high octane* gasoline. Through the various cracking and combining processes, oil refineries can maximize the useful product extraction and keep the toxic waste material to a minimum. High- performance vehicles typically have a high compression ratio requiring a high octane fuel so the gasoline does not prematurely ignite.*The octane rating of gasoline describes how much the fuel can be compressed before it spontaneously ignites. A high octane rating means the fuel will not easily ignite under high pressures. If the fuel prematurely ignites as a result of compression and not the spark plug, the engine will begin to knock and will quickly become damaged. Treating and Removing Impurities. While the distillation process separates and recollects various fuel types, it cannot separate out impurities that naturally collect in crude oil. Removing sulfur, nitrogen, and other impurities require a process known as hydrotreating – a milder version of hydrocracking. Hydrotreating removes impurities to reduce air pollution when the fuel combusts. To extract the unwanted chemicals, extra catalysts are introduced to convert sulfur into hydrogen sulfide. A Sulfur Unit can then extract elemental sulfur from the compound. The nitrogen that remains in the fuel is converted into ammonia using another catalyst. After the nitrogen is transformed, it is removed by water- washing the ammonia out of the distilled product. Once it is removed, the ammonia is recovered from the water as a pure product. Later, it is sold or used to manufacture fertilizer. Reforming. For a car to run well, the fuel on which it runs must have a high octane level. High levels of octane are generally a good measure of the quality of the fuel. Much of the oil that streams from the Cracking Units or low- pressure distillation columns maintain a low octane level that will not burn well in a car. Using another catalyst system made from platinum and rhenium, the compounds can be reformed to boost the octane levels by rearranging the molecular structure by splitting bonds and removing hydrogen. The process strips some hydrogen from the molecules, allowing the fuel to compress more before the fuel spontaneously combusts. A single oil refinery typically manufactures a wide variety of products intended for many applications. The fuel is shipped off to be further processed into fuels, plastics, and many other products. The incredible process of oil refining enables companies to convert thick dinosaur goop (or ancient plant matter) into a fuel that will power a car, train, or plane. Via Chevron Pascagoula Refinery. Featured Image Source: Wikimedia Commons. Introduction to Linux. Why partition? Most people have a vague knowledge of what partitions are, since every operating system has the ability to create or remove them. This principle dates from the days when Linux didn't have journaled file systems and power failures might have lead to disaster. Partition layout and types. There are two kinds of major partitions on a Linux system: data partition: normal Linux system data, including the root partition containing all the data to start up and run the system; and swap partition: expansion of the computer's physical memory, extra memory on hard disk. Glossaire, Lexique, traduction anglais français informatique: Javascript, lexique anglais français informatique (réseaux, Windows, hardware). Eine der umfangreichsten Listen mit Dateierweiterungen. Erweiterung Was; 000 (000-600) Paperport Scanned Image: 000 (000-999) ARJ Multi-volume Compressed Archive. Most systems contain a root partition, one or more data partitions and one or more swap partitions. Mount points. All partitions are attached to the system via a mount point. ![]() Amobee Privacy Policy for Consumers. Effective July 13, 2017. We at Amobee offer digital advertising solutions to the largest publishers, advertisers and agencies and. JAXP See JAXP Release Notes for known bugs and issues in this release. Platform Time Zone Detection on Microsoft Windows. Describes cumulative update package 1 for SQL Server 2016 SP1. Port Manteaux churns out silly new words when you feed it an idea or two. Enter a word (or two) above and you'll get back a bunch of portmanteaux created by jamming. Webopedia's list of Data File Formats and File Extensions makes it easy to look through thousands of extensions and file formats to find what you need. The MRAN website offers info about R and its packages as well as archives of past R package versions and downloads of Microsoft R Open. Who should read this book? This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and. ![]() Another blue screen, boot issue or frozen screen in Windows. |
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