Polyurethane pur or pu is a polymer composed of organic units joined by carbamate or urethane links. Isocyanate and resin blend.
Modeling the fire dynamics of burning polyurethane foam slabs is difficult and requires in depth knowledge of the various decomposition processes and chemical reactions involved.
Polyurethane foam chemical reaction. Pu are formed by chemical reaction between a di poly isocyanate and a diol or polyol forming repeating urethane groups generally in presence of a chain extender catalyst and or other additives. The combustion process is characterized by a two phase decomposition of tdi and polyol that is complex to simulate. Some foam mattresses are also treated with chemical flame retardants.
Material is mostly used in mattresses padding construction automotive and toys. Wound healing biomaterials 2016. Isocyanate designated in most instances by the letter a is a highly reactive organic.
Often ester ether urea and aromatic rings are also present along with urethane linkages in pu backbone. The components spf is the product of two basic chemical ingredients. The chemical resistances listed below should always be checked with manufacturing data.
Description of foam decomposition under sustainable flaming because after ignition any available oxygen is assumed to be consumed within the flame before reaching the fuel bed to cause oxidation 4. Note that polyurethane is not a uniform class of material. Additional classifications are used as an indication of the smoke production for building materials.
This post lists facts about polyurethane foam also known as urethane a light firm hydrothermal insulation material. Pu foams are formed by the reaction between an isocyanate prepolymer and a polyol in the presence of a blowing agent and an amine catalyst. Polyurethane rigid insulation reaches a classification from b to e in reaction to fire depending on a number of factors such as formulation and type of facings.
Multiple chemical sensitivity is a state by which some people develop allergic reactions to their surroundings. Polyurethane foam contains 61 toxic chemicals which emit fumes into the air according to researchers from duke university. Therefore the two pyrolysis reactions listed above remain as a simplified mean of describing the combustion of polyurethane foam.
S1 s2 and s3 where in the case of s3 there is no restriction on the smoke production.
Archimedes is particularly famous for designing war machines for his home state of syracuse during the punic wars. 287 bc by historians.
The windmills of holland are an example of using the archimedes screw to drain water from low lying areas.
Archimedes most famous invention. According to plutarch the famous greek biographer archimedes had a low opinion of the mechanical contraptions he invented and for which he was recognized in the entire ancient world. The device sometimes called the archimedes heat ray was. He may have observed them in egypt and later popularized them in greece.
Archimedes may not have discovered this invention since there is some evidence they existed for hundreds of years before his life. He was born in syracuse sicily and the year of his birth is estimated to be c. The 2nd century ad author lucian wrote that during the siege of syracuse c.
Archimedes invented archimedes screw archimedes was a greek mathematician physicist engineer and inventor of the 3rd century b c. Also known as the iron hand this was invented to protect the coastal areas against marine assaults. And is considered one of the greatest mathematicians of all time.
Archimedes also had inventions with the purpose of defending syracuse from the invading romans. One famous device was called the iron claw which is also known as the claw of. The claw would have a claw connected to ropes that would be attached to an end of a boat then it would be lifted from the water then released by doing so the boat would land end first.
An ancient greek engineer inventor astronomer and a mathematician he is known for devising a range of mathematical concepts including infinitesimals and the method of exhaustion for determining famous geometrical theorems like area of a circle the approximation of the value of pi and a system of exponentiation for defining very. 1 he formulated the archimedes principle one of the most famous contributions of archimedes is the archimedes principle. War machines and heat ray.
This is perhaps his most significant invention where archimedes designed a structure that allowed water from a low lying plain to reach irrigation canals without laborious effort. Archimedes may have used mirrors acting collectively as a parabolic reflector to burn ships attacking syracuse. Thus making the boat sink.
Archimedes first war invention was a claw that was said to be able to lift ships out of the water and then smash them. 214 212 bc archimedes destroyed enemy ships with fire. Centuries later anthemius of tralles mentions burning glasses as archimedes weapon.
The ss archimedes was a ship named after the great inventor which was the first steamship to come with a screw propeller. It is said to have been found by him when he was tasked to determine the purity of the gold crown of king hiero ii of syracuse. The three most famous inventions developments that archimedes made are the archimedes claw mirrors to burn ships and the catapult.
Concrete and sand bags are good materials for this part. Do the math if your particular project is bigger.
Make sure that your base is heavy.
How to build a homemade windmill. Another brilliant diy project designed by an expert that is bound to power your off the grid home. Cut out the hexagon template. This will be used to.
To build a wind turbine you ll first need to assemble a spindle and spokes for the turbine. Then mount magnet rotors on the turbine and weld the spindle flange to the tower. While the tutorial is detailed and shows you picture by picture how to proceed you do need some engineering skills.
Draw a polygon shape on a large sheet of cardboard or paper. Step 1 create your side templates. For a windmill that is 5 feet high for instance you will need a base that is at least 18 inches square and 20 lbs.
Build the windmill base. Cut out the template. You will need to build coils and work them in specific series according to diagrams.
Diy 1000 watt wind turbine. Once you ve done that mount the main assembly of the turbine on the tower and secure it into place. Draw a hexagon with 9 5 sides on a sheet of cardboard or heavy paper.
This will be used to create the sides of your windmill step 2 create the template for the top. If you use paper use a heavyweight paper such as butcher paper or posterboard. The shape should be 9 inches on top 12 inches on bottom and 20 inches tall.
Nicotine is highly addictive and harmful. Irregular heartbeat or palpitations occur you get symptoms of nicotine overdose such as nausea vomiting dizziness weakness and rapid heartbeat keep out of reach of children and pets.
A nicotine patch is a transdermal patch that releases nicotine into the body through the skin.
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What do nicotine patches do. Endorsed and approved by the u s. Any part of nicotine patch. Uses of nicotine patch.
What do i need to tell my doctor before i take nicotine patch. It s a transdermal patch meaning it delivers a specific amount of nicotine through the skin and into the bloodstream once applied. Put it in same spot as i had the last one.
Ust read ur not suppose to do that. If you are allergic to nicotine patch. It is used to curb the craving to smoke.
Or any other drugs foods or substances. Nicotine replacement products including gum and transdermal patches are on the world health organization s list of essential medicines. It is used to treat nicotine withdrawal.
Find out what nicotine does to the heart lungs arteries and brain of an. Used patches have enough nicotine to poison children and pets. Nicotine patches allow you to stop smoking straight away so they help you break the physical connection immediately.
I put my second patch on 24 hrs later and took old one first. You still are getting nicotine and are able to control the dosages the idea being that you reduce it over time and eventually break the addiction to smoking and nicotine. Food and drug administration it is considered one of the safer nrts available.
It is normally smoked in cigarettes but can lead to further drugs misuse also. One of these tools is the nicotine patch a type of nicotine replacement therapy that works by releasing a measured dose of nicotine into the skin helping to wean smokers off their nicotine. Tell your doctor about the allergy and what signs you had.
A nicotine patch is a form of nicotine replacement therapy nrt designed to help people quit smoking. It is used in nicotine replacement therapy a process for smoking cessation. I ust started over counter nicotine patches yesterday.
Patch strength is reduced over time allowing the user to wean themselves off of nicotine gradually. The nicotine patch provides a steady controlled dose of nicotine throughout the day thereby reducing the effects of nicotine withdrawal.
For nearly 70 years canon has produced only the best cameras and lenses and continued to put that expertise and experience into all the optical electrical and electronic technology products. The history of canon s 35mm slr cameras began with the canonflex although a lot of technology had been incorporated into the slr camera around the fall of 1964 there had been growing calls both inside and outside of the company for canon to embark on production of a very advanced slr camera to meet the requirements of.
Seamless transfer of images and movies from your canon camera to your devices and web services.
Where are canon cameras made. The eos system 30th anniversary interviews 2017 marked the 30th anniversary of the birth of the eos system. In the year 2154 the very wealthy live on a man made space station while the rest of the population resides on a ruined earth.
Canon has a primary listing on the tokyo stock exchange and is a. The large aperture ef mount made possible the brightest lens in the world designed for a 35mm slr camera the ef50mm f 1 0l usm lens. The last non eos based slr camera produced by canon the canon t90 of 1986 is widely regarded as the template for the eos line of camera bodies although the t90 employed the older fd lens mount standard.
Canon began with the establishment of precision optical instruments laboratory in 1933 1962 1975 in 1962 canon developed its first five year plan in preparation for full fledged entry into the business machine market 1976 1987 in 1976 canon launched its premier company plan with the aim of becoming an excellent global company 1988 1995. F 1 responding to the needs of professional photographers. From easy craft ideas to origami style 3d models bring the paper fun into your daily life and add personalise with the editing function.
Canon currently makes 64 65 of its cameras in japan and the new plant will raise the figure to around 70 mitari indicated adding that the remaining 30 are entry level models. Canon is committed to continuing that tradition of quality into the 21st century in which rapidly changing digital media will play an increasingly. For a detailed list of eos film and digital slr cameras see canon eos.
Movies filmed with canon and nikon dslr cameras. Creative park creative park creative park. A man takes on a mission that could bring equality to the polarized worlds.
With regard to daily testing there are subtle differences between testing at a bottled water plant and a public water system pws treatment plant. The water is filtered through tiny holes that keep microorganisms and sediment from tainting the water.
Beyond the basic rules for packaged food the fda has specific rules for bottled water.
Bottled water production process. While water goes through such a stringent process of cleaning there are other ways that water can be contaminated. I will be giving a run down of the production process of sachet water and bottled water and the detailed guide on ways to establish sachet water firm quickly. Critics of bottled water argue that the industry should take in to account not just water used in its production and packaging process but the total.
They include purification and packaging of water for consumption. In simple terms bottled water production involves two major processes. Have you ever pondered on the process of bottled water production.
Bottled water production process. In sachet water company called distilled water is just like any other company the leading top priority ought to be solution to humankind then money will certainly be moving normally. The purecare approach by parker.
Ph adjustment aeration flocculation chlorine or ozone injection preliminary filtration treatment. Bottled water facilities use water from protected underground sources such as springs or artesian aquifers as well as from pws. Filtration solutions from parker domnick hunter are supported through a structured pre and after sales program called purecare.
Source water pre treatment. Sand filter activated carbon filter softener microfiltration final treatment. The bottles then get rinsed and sanitized with an ozone solution ozone is about 1500 more powerful than chlorine and finally the bottles are rinsed again with finished product water the good stuff.
Or the modus operandi of the machines. Both bottled water and pws plants typically test more frequently than the minimum number of samples required each month by respective fda and epa regulations often on an hourly basis. The jet of water is about 1 2 inch in diameter and just scours the entire inside of the bottle.
Fda regulations for bottled water safety start with the most basic regulation for all food products bottled water must be packaged in a sanitary container and in a sanitary environment. Filtration is considered a treatment in the water bottle manufacturing process. Bottled water production process we aim to offer value added filtration solutions which adhere to our application led philosophies of increasing process efficiency and reducing wastage.
In the united states bottled water production represents 0 011 of annual water consumption.
It has no chain brakes and pedals. The penny farthing came after the development of the french velocipede and other versions of early bikes.
Once again germany was the center of innovation when philipp moritz fischer who had used the draisine since he was 9 years old for going to school invented the very first bicycle with pedals.
The first bicycle invented. It is a two wheeled and steerable running machine. 1853 and the invention of the first bicycle with pedals tretkurbelfahrrad by philipp moritz fischer. When was the first bicycle invented.
It was a work of karl von drais a german baron. Technically it was a velocipede a 2 wheeled human powered vehicle. It had no pedals to operate it you had to run.
The first bicycle was invented in 1817 by german baron karl von drais. The penny farthing is also referred to as the high or ordinary bicycle. For this reason it was nicknamed the hobby horse.
After several models of simple bicycles and velocipedes a true revolution in bicycle history happened during early 1860s. It was in 1817 when the first bicycle was developed. The rider pushes the bike using his feet.
Who invented the first bicycle. The first one was invented in 1871 by british engineer james starley. Two french carriage makers pierre michaux and pierre lallement improved design of then popular daisy horse and added mechanical crank drive with pedals on it.
For this reason karl von drais is hailed as the father of bicycle.
Some high grade cigarette paper is made from flax. Cotton and linen rags are used in fine grade papers such as letterhead and resume paper and for bank notes and security certificates.
Our paper machines remove water from the fibre solution.
Process and procedure to make paper. At the wet end of the paper machine sits the headbox which distributes a uniform jet of watery stock. Lay one out on a chopping board ready to receive the first sheet of paper. Preparation of the fibers sheet formation and drying.
Diluting the paper fibres this way allows us to make thin uniform paper. At the start of the papermaking process the solution comprises of roughly 1 fibre and 99 water. Whatever your chosen vat add about a cupful of your beaten sized pulp and then top up with water.
Most paper is made by a mechanical or chemical process. Before making your pulp into paper place a stack of slightly damp j cloths or other similar non woven kitchen cloths beside your vat. Preparation of the fibers.
Hemp and jute fibers are commonly used for textiles and rope making but they can also be used for paper. The fact that mankind ever stumbled upon this process is shear genius as the paper making process follows three steps.
Silkworms mainly feed on mulberry leaves as well as other mulberry species. They are dyed to give them the desired color.
Silkworms spew out fibroin through small holes in their jaws to make silk.
How does a silkworm make silk. Silk is mainly produced by silkworm which is the larva of the silkmoth. This entire production takes a mere 72 hours during which time they produce between 500 1200 silken threads. Tasar silk is produced by the silkworm antheraea mylitta and antheraea paphia and it is copperish in color.
It is an economically important insect and the chief producer of silk. Silkworm produces up to 1200 silken threads within 72 hours which helps create a soft silver cocoon. Silkworms offspring of moths produce their highly desirable pricey silk by spewing out thread from tiny holes in their jaws which they use to spin into their egg bearing cocoons.
The fibroin consists of digested leaves and protein. Janaki venkatraman wife of the former president asked if she could get a silk saree that is made without. And then silk farmers harvest the threads with steam.
Rajaiah says he started giving a serious thought to ahimsa silk when in the 1990s. Domestic silkmoth scientifically referred to as bombyx mori is a moth belonging to the family bombycidae. Mulberry leaves usually produce yellow silk and a very small quantity of white silk.
Silkworms are available in various colors. Do they kill silkworms make silk. Usually silk farmers will throw live cocoons of silkworm into boiling water to kill silkworms.
The worm rotates itself in the direction that forms the number 8. Some have stripes while some are pure white. The silk thread formed out of one entire cocoon is around 300 m long and a silkworm takes 3 to 4 days to spin the cocoon completely.
Silkworms wrap themselves in a cocoon made of raw silk after they have molted at least four times. This vox video shows how silk is extracted from silkworms. After dying the silk thread is allowed to dry.
This silk cocoon is made of one single thread of raw silk that ranges from 1 000 to more than 3 000 feet in length. Once dried silk is fed into large rollers and weavers which produce the final piece of silk apparel. The silk is produced in the salivary glands of the silkworm and it is used for protection during the silkworm s pupal stage.
The striped ones have either chocolate or black stripes on them. This is because silkworm will transform into a bombyx mori moth after it has spun it cocoon and it excretes a fluid that dissolves a hole in the silk once the transformation is complete.
Go through the circuit board and record the values of all the parts that have values. On a schematic you will also see a electrical components symbol next to it will have a identification number next to its abbreviation ie.
In circuit diagrams there are many electrical symbols that are used to represent different electrical components and devices.
How to read a circuit board. List in a column the labels of all the parts and their values found on the board. The abbreviation for a resistor r followed by a number to identify it on a pcb r102. For most symbols polarity is included in the symbol.
To find out the polarity of the physical part a general rule of thumb is to look for which metal lead wire on the part is longer. You will see the symbol for a resistor. Recognizing circuit diagrams symbols once you know the language or terms of circuit diagrams you are half way of being able to reading them.
In the the photos below you will find a guide to distinguishing polarity for various symbols. Next to the symbol you will also see its value 2 2k. This means you have to attach it in a certain way.
Here is an overview of the most used symbols in circuit diagrams. Some components to a circuit board are polarized meaning one side is positive and the other is negative. Many components use colored bands to record their values instead of numbers.
This is the side.
Check out the sticker on the lens. Anti reflective coating works better and is easier to apply to plastic lenses.
Pilot square round and rectangular.
Are ray ban lenses glass or plastic. Most if not all ray bans come with an option for crystal gradient lenses as well. Ray ban is the global leader in premium eyewear market and by far the best selling eyewear brand in the world. Whether you choose crystal glass lenses or plastic lenses ray ban makes a guarantee of clear vision comfort 100 uva uvb protection and durability.
Ray ban sunglasses are known for their high quality so if the pair s logo is flaking or peeling there s a good chance the sunglasses are fake. The sunglasses were redesigned with a metal frame the following year and patented as the ray ban aviator. All genuine ray ban products are crafted from high quality materials using the finest manufacturing processes.
Notably the plastic body of ray ban sunglasses are cut from a single piece of acetate and are hand polished. The prototype created in 1936 and known as anti glare had plastic frames and green lenses that could cut out the glare without obscuring vision. As a general rule of thumb glass lenses will cost you more than plastic ones.
Take a look at all the shapes available. Made out of plastic and very durable plastic gradient lenses are better than crystal gradient lenses in terms of durability as well. Discover the full ray ban eyeglasses collection featuring unmistakable glasses and frames for men and women.
Because of this you shouldn t be able to detect any nicks rough spots or especially seams on your glasses. All brand new ray ban sunglasses feature a gold sticker on the lens with both the ray ban logo and a black font lens type. Glass lenses are clearer than polycarbonate plastic and will provide you with the crispest visual experience.
Ray ban lenses glass or plastic january 13 2021 by the author if you are a severe cyclist or a periodic rider it is essential that you have a great set of sunglasses to assist protect your eyes from the sun and the glare from the roadway surface area. Ray ban lenses are crafted and designed from both crystal and plastic and are available in both options with almost all design models. Impact resistant lenses were added in 1938.
Ray ban frames are available in a number of iconic styles to suit all face shapes and provide timeless looks. The brand takes great pride in the creation and manufacture of the design of its lenses which are built with the sole purpose in view to ensure the great comfort and safety of the user.
What methods of making steel changed the steel industry. In the traditional form of steel making steel comes from a material known as pig iron.
Limiting dissolved gases such as nitrogen and oxygen and entrained impurities in the steel is also important to ensure the quality of the products cast from the liquid steel.
Improved the process of making steel. It was named after the british inventor sir henry bessemer who worked to develop the process in the 1850s. Steelmaking is the process of producing steel from iron ore and or scrap. Other processes which are developing are the fuel oxygen scrap fos process and spray steelmaking which consists in pouring iron through a ring the periphery of which is provided with jets through which oxygen and fluxes are blown in such a way as to atomise the iron the large surface to mass ratio provided in this way giving extremely rapid chemical refining and conversion to steel.
We have gathered all our steel manufacturing information and created a. The bessemer steel process was a method of producing high quality steel by shooting air into molten steel to burn off carbon and other impurities. The bessemer process and the open heart process.
Traditional methods of steel making. Bessemer process improved the process of making steel. This person s name is synonymous with electricity because of his development of and inventions for its use.
In steelmaking impurities such as nitrogen silicon phosphorus sulfur and excess carbon are removed from the sourced iron and alloying elements such as manganese nickel chromium carbon and vanadium are added to produce different grades of steel. Inventor who developed the idea of a central electric power station weegy. Whether you re producing steel from iron ore or scrap and your end product is several inch thick slabs or galvanized sheet less than a millimeter thick you are always looking for technologies that improve each stage of the steel manufacturing production process from incoming raw materials to the final coating line.
Improved the process of making steel weegy. Steel making is an selective oxidation process by which the impurities are removed. Thomas edison is the inventor who developed the idea of a central electric power station.
The modern day process for how steel is made is far more effective than methods used in the past and technological developments have further improved upon the steel manufacturing process.
They also carry the supertag ink tag which does not have eas protection but instead the more traditional concealed vial of ink that will be released if the item is tampered with. These clothing tags are placed on the items when checked into inventory.
Sensormatic has several lines under their hard tag family that are either eas electronic article surveillance or ink tags.
Types of ink tags. The only way to get a tag off once the two pieces are secure is with a special removal device which detaches the two pieces. The stronger the magnetic lock the harder the tag is to illegally remove which is why a minimum strength of superlock is recommended. Security tags are used on items in retail stores to help prevent thieves from leaving with the item or items.
There are several different types of security tags used such as super gator clam and ink pins. Ink security tags consist of two pieces held together by a narrow pin. Types of security tags used in retail shops.
The pin goes through the item of clothing and secures the two pieces together. Radio frequency rf tag. The above video shows how to remove just about every common type of anti theft tag that can t be removed with just your finger.
The ultra ink tag in particular is a combination of ink and eas providing extra theft deterrent for merchants concerned with protecting high value items. Inside the ink security tag is a sealed vial of dye. Watch this video https invidio us watch v hlt3zad8r8i.
This ink tag offers retailers an attractive and secure am or rf hard tag benefit denial ink tag combination. The tag is equipped with two ink vials an am or rf circuit and a superlock clutch. Items are protected with many different types of security tags including ink tags eyeglass tags pencil security tags barcode labels checkpoint alarming butterflies and cigarette labels.
A clear plastic dome shaped pin is used to connect the tag to retail merchandise. There are two widely used types of locking mechanisms available. Magnetic and mechanical with magnetic tags available in a series of strengths ranging from standard to superlock hyperlock and multi polar.
Pencil tag remove before washing or wearing tag.
This is the timeline of modern antimicrobial anti infective therapy. The years show when a given drug was released onto the pharmaceutical market.
Production of antibiotics is a naturally occurring event that thanks to advances in science can now be replicated and improved upon in laboratory settings.
Where are antibiotics found. As with the initial discovery of penicillin most. However people are also turning to natural antibiotics. They treat bacterial infections not viruses.
Antibiotics include a range of powerful drugs that kill bacteria or slow their growth. This is not a timeline of the development of the antibiotics themselves. One report found resistant bacteria in 81 of ground turkey meat 69 of pork chops 55 of ground beef and 39 of chicken breasts wings.
If used incorrectly or overused there is a risk that the. Concentrations of antibiotics found in some of the world s rivers exceed safe levels by up to 300 times the first ever global study has discovered. Prescription antibiotics such as penicillin have helped people to recover from otherwise fatal diseases and conditions since the 1940s.
Mary s hospital in london. Researchers looked for 14 commonly used. A limited number of antibiotics also possess antiprotozoal activity.
In a new study that surveyed 91 rivers around the world researchers found antibiotics in the waters of nearly two thirds of all the sites they sampled from the thames to the mekong to the tigris. An antibiotic is a type of antimicrobial substance active against bacteria it is the most important type of antibacterial agent for fighting bacterial infections and antibiotic medications are widely used in the treatment and prevention of such infections. But it was not until 1928 that penicillin the first true antibiotic was discovered by alexander fleming professor of bacteriology at st.
Of these 84 were resistant to at least one antibiotic. Due to the discovery of penicillin by alexander fleming and the efforts of florey and chain in 1938 large scale pharmaceutical production of antibiotics has been made possible. They may either kill or inhibit the growth of bacteria.
The word antibiotics was first used over 30 years later by the ukrainian american inventor and microbiologist selman waksman who in his lifetime discovered over 20 antibiotics. Alexander fleming was it seems a bit disorderly in his work and accidentally discovered penicillin. Returning from holiday on september 3 1928 fleming began to sort through petri dishes containing colonies of staphylococcus bacteria that cause boils sore throats and abscesses.
Sponge flies also known as spongilla flies neuroptera sisyridae are specialist predators of freshwater sponges. Today the sponges you buy at the store are likely made from synthetic materials and produced in a factory.
Humans have a lot in common with the humble sea sponge according to research that changes the way we think about animal evolution.
How are sponges used by humans. They use their elongated mouthparts to pierce the sponge and suck the fluids within. The larvae hatch and drop into the water where they seek out sponges to feed on. A research team report that a collaborative study found sponges.
The female lays her eggs on vegetation overhanging water. A human made sponge is called a sponge because humans used to use sea sponges. But natural sponges are animals that come from the sea and have been used for a long.
Recycling centers use magnets to help sort steel objects such as tin cans from other recyclables. Magnets are also used in compass needles which are helpful for navigational purposes.
The magnet won t help pick out the soda cans however because aluminum isn t magnetic.
What are magnets used for today. An mri magnet is very strong thousands of times more powerful than common kitchen magnets. The bar magnet is one of the simplest types of magnets used today. Uses of magnets in medicine.
The tiny magnetic regions on a computer hard disk are only 200nm 200 billionths of a meter wide. Magnets are found in some commonly used medical equipment such as and magnetic resonance imaging machines. Magnets are used to store data in computers and are important in scanning machines called mris magnetic resonance imagers which doctors use to look inside people s bodies.
According to ancient chinese inscriptions lodestones were used in acupuncture treatments. Mris use powerful magnetic fields to generate a radar like radio signal from inside the body using the signal to create a clear detailed picture of bones organs and other tissue. Magnets are used in mri machines which are used to create an image of the bone structure organs and tissues.
Even magnets are used to cure cancer. Magnets can also be found inside computers doorbells and soda machines. At home you use magnets when you stick a paper on the refrigerator in order to remember something.
Magnets help electric can openers hold cans in place and compasses point north. Hindu sacred writings also refer to the use of magnets in surgical applications. Attaching a magnetic bottle opener to the fridge can come in handy.
Another medical use for magnets is for treating cancer.
Crazy Ex-Girlfriend just got one as well. Whether you are jealous at the thought of seeing your ex with someone new nostalgic at the thought of losing a close friend or terrified at the thought of being alone and dating again you might.
According to relationship experts here are the 6 most common reasons we stay with men who are all wrong for us.
Ex girlfriend wont leave me alone. A Renton teen arrested over the weekend has been charged with killing his 17-year-old ex-girlfriend and setting her familys home on fire. We are all responsible for what we say and how we act and if your narcissistic ex decided to make you feel worthless and unloved it was never because of something you did. This leaves you vulnerable to further manipulation.
But if you live in a small town or know a lot of the same people you might have a harder time completely. Greg finally breaks free of West Covina Paula made a Huge decision and Rebecca well shes no Miss Douche. Her girl friend eventually came over and we all talked i calmed a bit and eventually gave in and agreed to say ok.
I know that you have plenty to talk about besides your stupid ex so remind me of why I enjoy your company. Jarod wont leave me alone she said in a. She also shared a message about her ex saying I wish I could say I wish him the best but I dont and I never will.
She moved out of state and they have been pen pals for some time now. Its sometimes easy to avoid crossing paths with an ex-partner after a breakup. But not to me apparently.
Our date turned out wonderfulhe was funny successful hot blah blah blahthe perfect guy. Entertain yourself with his new life and leave mine alone she said. First lets talk about whats going on with your ex-girlfriend.
There are a number of behaviours you should expect when you split up with one. The scariest thing Max told me is thinking that someone else loves my ex girlfriend just as much as I didthat they have the thing that we had which at one time felt so sacred and. Narcissists can mess with your mind.
When your loved ones wont listen to you you probably feel pretty alone. But back to the filmmaker. She talked me through asking my ex for my things back.
Blaming your issues on Mom Dad your siblings or the. Weve split up but she wont leave Lesley Garner 08 August 2006 0001 am In her new column author Lesley Garner tackles the anxieties and dilemmas that beset modern life. The next day my ex and her girl friend came to my house to get her stuff she had there furniture and other little things for she had started moving in with me.
Your ex is not the reason we became friends the 21-year-old says. It must have been very hard to be honest after three years together. The person abusing you may pull you back in with kindness even.
Theres a lot to discuss about Crazy Ex-Girlfriend Season 2 Episode 4 so lets just get right to it. His ex wont leave us alone. My ex is the one who had the affairs and she has the financial capacity to leave yet she wants to stay because she feels an emotional attachment to the apartment.
They reminded me that all was not lost. Marie and Olivia helped me rebuild a foundation of my strongest happiest and most present self. He dated this ex-girlfriend for a few years more than five years ago.
My ex girlfriend doesnt want me but she wont let me go Your ex is obviously confused about her feelings but shes also messing you around it should be brought to an end The. But stay strong youll soon be thankful they are out of your life. I have to hand it to her she was honest at least at first.
He has a stage five clinger ex-girlfriend. When we were planning his recent move she got very inquisitive about the details. So we get into bed and I move my hand down and there it wasa baby.
My family made me do it. She told me she doesnt want a boyfriend right now so on and so forth.
Both these materials are made of carbon and hydrogen formed into monomers and. Ethylene is derived from natural gas and petroleum.
Plastic bags white grocery store bags green garbage bag etc are generally made of polypropylene or polyethylene.
Chemical composition of plastic bags. High density polyethylene hdpe low density polyethylene ldpe or linear low density polyethylene lldpe. Instead of being recycled as new plastic bags many bags are used to create other synthetic materials such as composite lumber. Thermoplastics can be softened by heating reshaped and then hardened by cooling.
The polyethylene used in most plastic shopping bags is either low density resin identification code 4 or more often high density resin identification code 2. The other category of plastics is made up of heterochain polymers. High density polyethylene hdpe low density polyethylene ldpe or linear low density polyethylene lldpe.
Those thick glossy shopping bags from the mall are lldpe while grocery bags are hdpe and garment bags from the dry cleaner are ldpe. Here attached to every other carbon atom is a pendant methyl group ch 3. While shopping bag plastic is recyclable it cannot be remade into an organic state and once created must stay as a synthetic substance for the rest of its life.
The structure of polypropylene can serve as an example. In general plastic bags are the preferred. Typically thermoplastics are shaped into pellets sheets fibers tubes or films before being molded into a variety of products.
These compounds contain atoms such as oxygen nitrogen or sulfur in their backbone chains in addition to carbon. Plastic bags typically are made from one of three basic types. Plastic bags are made from low density polyethylene ldpe a form of thermoplastic.
Traditional plastic bags are usually made from polyethylene which consists of long chains of ethylene monomers. Plastic bags typically are made from one of three basic types. Those thick glossy shopping bags from the mall are lldpe while grocery bags are hdpe and garment bags from the dry cleaner are ldpe.
In that case go to town. Then place tracing paper over the design and trace it with a pencil.
The most important part of your tattoo journey be it permanent or temporary should be the.
How are temporary tattoos made. White paper you ll need this to print out some black and white clip art for your child to color in. 1 freaking out your mother 2 costume party cosplay etc3 figuring out if you really really want to get that tattoo you ve been thinking about for weeks i was a smart ass teen and whenever my mother was angr. Remove the tracing paper then sprinkle your skin with baby powder the baby powder acts as a fixative.
Temporary tattoo paper this is a very important material needed to make diy tattoos for kids. Therefore temporary tattoos can be easily changed to suit the whims of fancy and fashion. Make a temporary tattoo using tape and printer.
To apply the tattoo the user simply moistens the paper and the film slides off the backing layer carrying the image onto the skin. Trace the image that you drew on the tracing paper remember to trace gently so that the paper won t rip continue tracing until the image on the tracing paper fades a bit. This project has three main purposes.
Pick an area where you d like the tattoo to go such as your wrist or arm. The name of your temporary tattoo game can be whittled down to one word. Get the small chopstick.
Place the ink side of the paper face down on your skin and spray it with perfume once applied. To make your own temporary tattoo first draw or print out the design you want to use. How to make temporary tattoos.
Trace over the design again with a non toxic black felt tip marker to make it dark then cut off the excess paper around the design with scissors. Decal style temporary tattoos are made by printing an image onto special paper coated with a transfer film. Spray the side of the paper that you re sticking onto your skin with perfume.
Materials needed to make homemade tattoos for kids. How to make a temporary tattoo with an eyeliner. Follow this step by step guide to make your temporary tattoo with an eyeliner.
Unless you have a fine tipped pen and are an artist of course. Apply the tattoo to your skin. This is one of the easiest tricks on the market for diy temporary tattoos.
When you freeze crab meat the texture might change. Store crab meat in home freezers at 10вєf or below for up to 3 months.
This is an extremely simple way to freeze the crab.
How to freeze crab meat. Use some aluminum foil to wrap the sealed bag and put it in your freezer right away. You may wish to remove the meat and use an airtight freezer bag instead. Place the cooked dungeness crab in a food storage bag meant for the freezer.
Use a marker to label the bag with the date and type of crab. Prepare the meat a few hours before serving. Freezing the crab is extremely easy.
The first step in freezing crab meat is to determine what is the amount of crab meat that you have. Protect it from freezer burn by double bagging it in a second freezer bag. Now you know how to freeze crab.
Place canned crab meat inside a food safe storage bag. All you need to do is follow some steps and you are good to go. Place the wrapped crab in a freezer bag with a zip top.
Use a marker to write the date and the type of crab you re freezing on the bag. Fill the bag with milk until it covers the crab meat entirely. Suck the air out of the bag with a straw then seal the bag.
Keep the freezer at 0 degrees fahrenheit to keep it safe according to the usda food safety and inspection service website. Want to know more about them. But if you have a bigger amount of crab meat or if you have a whole crab then you have to use freezer bags that are much larger or special freezer paper.
There are three ways in which you can freeze the crab. Place the bag in the freezer and allow milk to freeze solidly over crab meat. Use a straw to suck the air out of the bag and then seal it.
Take a food grade sealed bag don t vacuum seal milk will need room to expand and place your crab meat inside. Freeze it and enjoy crab for up to a solid 6 months maybe longer. All you need to do is get a vacuum sealer.
To remove the crab meat from the legs you can use a pair of shears a nut cracker or an old table fork to get the meat from the crab legs. It will be dry and the moisture will be out of it. Put the cooked dungeness crab in the freezer.
Once you have all the meat you can package it and freeze it in freezer bags. Put the wrapped crab in a heavy duty sealable freezer bag. To freeze opened canned crab meat you should follow these guidelines.
Wrap the crab or crab meat in plastic wrap. The plastic containers are susceptible to cracking. Freezing crab meat alone is better than freezing the whole crab.
Wrap the sealed bag in aluminum foil and immediately store in the freezer. If your freezer will not maintain 10вєf then shorter shelf life will result. Store the crab meat in proportions in separate bags.
But don t worry because the taste will stay the same. Pour milk whole milk is recommended until the entirety of the meat is submerged. You will notice that there is quite a bit of crab meat in the thigh area that is pretty easy to get at.
If you have only a small amount of this meat then you can simply use a freezer bag that is in size of a gallon. Pick the crab and freeze the meat. You should clean the crab first and separate the meat from its body.
Wrap the crab meat tightly in plastic wrap.
Cylinder connected to a flow and pressure regulator. For the oxygen component p o 2 p f o 2.
High pressure cylinders can range anywhere from around 1800psi up to around 4000 psi and i have even seen large special cylinders at 10 000 psi.
Pressure of oxygen cylinder. P o 2 partial pressure of oxygen p total pressure f o 2 volume fraction of oxygen content. Cylinders are built from steel aluminum composit and even titanium. 1 2 indicates that gas is available.
Manufacturers label the cylinders to confirm this. Minimum pressure in tanks is around 300 psi with delivery systems operating at pressure below 400 psi. As volume is a constant and temperature is usually constant in the hospital environment the pressure gauge can provide an accurate reading for volume as well as for pressure.
Oxygen cylinders have black body with a white top. Oxygen cylinders contain oxygen under pressure and the pressure gauge gradually falls as the cylinder is depleted. You must always take temperature into account when estimating how much acetylene the cylinder contains.
The answer is it depends on the cylinder construction. The minimum safe partial pressure of oxygen in a breathing gas is commonly held to be 16 kpa 0 16 bar. In contrast the storage and delivery system of liquid oxygen in a hospital pressures are usually around 50 0 55 1 psi.
Contains gaseous oxygen pressure drops linearly as oxygen is depleted method of insertion and or use. A pressure gauge fig. A full acetylene cylinder which has a pressure of 250 psi at 700f 1725 kpa at 20 c will have a pressure of 315 psi at 900f 2175 kpa at 310c and a pressure of 190 psi at 500 f 1300 kpa at 90c.
A full size e cylinder the size fitted to most anaesthetic machines contains approximately 680 l of gas. In scuba diving the united states measures cylinder volume by the amount of free air of standard pressure of about 1 bar that can be compressed into the cylinder. Typically stored at 13 700 kpa 137 bar may vary between 12 000 17 000kpa depending on the cylinder.
Pressure varies from cylinder to cylinder. United states 19 cubic feet international 3 liter at 180 bar. The amount of oxygen present inside the cylinder is measured by the pressure at the outlet nozzle.
This concept is derived from the famous formula pv t constant where p is pressure in the cylinder v is the volume of the cylinder and t is the temperature. Europe and most of the rest of the world measure the cylinder volume as the internal volume water capacity and specifies the working pressure of the cylinder. Partial pressure total absolute pressure volume fraction of gas component.
What are the 7 main types of bridges. A suspension bridge is a type of bridge in which the deck the load bearing portion is hung below suspension cables on vertical suspenders.
The underspanned suspension bridge is a rare type of suspension bridge that was created in the early 19th century.
Types of suspension bridges. The main forces in a suspension bridge of any type are tension in the cables and compression in the pillars. Suspension bridges are a type of structure where the deck is hung below a series of suspension cables that are on vertical suspenders. This type of bridge has cables suspended between towers.
The tops of pylons have to accommodate the cable saddles where practically all the load of the half bridge is concentrated. It is also known as a rope bridge swing bridge suspended bridge hanging bridge and catenary bridge and is the oldest variant of the suspended bridge. The first modern examples of this design began to appear in the early 19th century.
It was inaugurated 75 years ago in the year 1937 and is also listed as one of the world s longest suspension bridges. Simple suspension bridge is a bridge that has no towers nor piers and is suspended on the cables that are anchored at their ends and nothing else. This bridge also only spans smaller areas and is commonly made from iron.
Simple bridges without the suspenders have been in place in the mountainous regions of the world for many centuries. D stain lined frame. A pure suspension bridge is one without additional stay cables and in which the main cables are anchored in the ground.
We will now take a look at the different types of bridges and how they work. This includes most simple suspension bridges and suspended deck suspension bridges and excludes self anchored suspension bridges. Different types of bridges.
Suspension bridges have cables that suspend between its. The first modern examples of this type of bridge were built in the early 1800s. It spans up to 4 200 feet and consists of 6 lanes with one pedestrian and bicycle lane on both sides.
Typical layouts of suspension bridge towers in size ascending order. E stain lined truss. A beam bridge is one of the simplest types of bridge.
This bridge is similar to the simple suspension bridge however it has trusses located below the deck that increase strength. The golden gate bridge is one of the most iconic suspension bridges in the world. Simple suspension bridges which lack vertical suspenders have a long history in many mountainous parts of the world.
Since almost all the force on the pillars is vertically downwards and they are also stabilized by the main cables the pillars can be made quite slender as shown in the pictures above. Arch bridge stringer bridge beam bridge cable stayed bridge truss bridge with pictures and action of forces on bridges components of bridges. Some suspension bridges are of unusual hybrid types.
Because of these it can reach high temperature before melting. The reason tungsten is used is because it has the highest melting temperature of any element at 3600k.
The filament of an electric bulb is made of tungsten.
An electric bulb has a filament made of. 1906 william coolidge developed ductile tungsten from sintered tungsten for making filaments. Filaments in incandescent light bulbs are made of tungsten. Hence the filaments are made of tungsten.
For a typical incandescent light bulb the tungsten filament operates at approximately 2500 celsius. The tungsten is arranged in a double coil in order to fit it all in a small space. Whenever an electric current goes through the filament the filament glows.
1911 general electric company started marketing first incandescent bulbs made of ductile tungsten. I a wire made of tungsten is used for filament of electric bulb because it has a high melting point and high resistivity. Ii a nichrome wire is used as a heating element for a room heater because the resistivity of nichrome is high and increase in its value with increase in temperature is high.
It may also be known as the electron emitting element in a vacuum tube. The filament of an electric bulb is made of tungsten because it has some amazing properties including the highest melting point 3422oc lowest vapor pressure and greatest tensile strength out of all the metals. The filament in a light bulb is made of a long incredibly thin length of tungsten metal.
That is the filament is wound up to make one coil and then this coil is wound to make a larger coil. An incandescent light bulb incandescent lamp or incandescent light globe is an electric light with a wire filament heated until it glows. To make the bulb produce more light the filament is usually made of coils of fine wire also known as the coiled coil.
The filament is enclosed in a glass bulb with a vacuum or inert gas to protect the filament from oxidation current is supplied to the filament by terminals or wires embedded in the glass. In a typical 60 watt bulb the tungsten filament is about 6 5 feet 2 meters long but only one hundredth of an inch thick. 1917 a coiled coil filament was developed and patented by burnie benbow.
I would like to use one of my key ingredients m ms as an example and prove to those who are currently unaware of the amazing things that can be done with them. Sugar cocoa mass skimmed milk powder cocoa butter lactose starch milk fat palm fat glucose syrup shea fat stabiliser gum arabic dextrin glazing agents beeswax carnauba wax colours e100 carmine e132 e133 e150a e150c e150d e153 e160a e160e e162 e163 e170 beetroot concentrate emulsifiers soya lecithin.
M M S Fudge Brownie 9 Oz Bag Sharing Size M M S Mms Com
Get nutrition information for m m s items and over 200 000 other foods including over 3 000 brands.
Ingredients of m and ms. M m s milk chocolate candiesmilk chocolate sugar chocolate skim milk cocoa butter lactose milkfat soy lecithin salt arti cia avors sugar cornstarch less than 1 corn syrup dextrin coloring includes blue 1 lake yellow 6 red 40 yellow 5 blue 1 yellow 6 lake red 40 lake yellow 5 lake blue 2 blue 2 lake gum acacia. Dark chocolate was added in 2009 replacing mocha. M ms have two main components hardened liquid chocolate and the hard candy shell.
M ms so many ingredients i find are completely disregarded despite their true unappreciated quality. M m s brand peanut chocolate candies milk chocolate sugar chocolate skim milk cocoa butter lactose milkfat peanuts soy lecithin salt artificial and natural flavors sugar peanuts cornstarch palm oil corn syrup dextrin coloring includes blue 1 lake red 40 yellow 6 yellow 5 blue 1 red 40 lake yellow 6 lake yellow 5 lake blue 2 lake blue 2 carnauba wax gum acacia m m s brand peanut butter chocolate candies milk chocolate sugar cocoa butter. The chocolate liquor is a thick syrup that is made from the grinding of cocoa beans.
M m s premiums do not have a candy shell but are coated with carnauba wax and color. Liquid chocolate comes from a blend of whole milk cocoa butter sugar and chocolate liquor among other ingredients. Track calories carbs fat sodium sugar 14 other nutrients.
They come in five flavors chocolate almond mint chocolate mocha raspberry almond and triple chocolate milk dark and white chocolate which are sold in small upright cartons with a plastic bag inside.
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