Instruct: Given a question, retrieve documents that can help answer the question.
Query: What kind of needles are used for knitting?
A knitting needle or knitting pin is a tool in hand-knitting to produce knitted fabrics. They generally have a long shaft and taper at their end, but they are not nearly as sharp as sewing needles. Their purpose is two-fold. The long shaft "holds" the active (unsecured) stitches of the fabric, to prevent them from unravelling, whereas the tapered ends are used to "form new stitches". Most commonly, a new stitch is formed by inserting the tapered end through an active stitch, catching a loop (also called a bight) of fresh yarn and drawing it through the stitch; this secures the initial stitch and forms a new active stitch in its place. In specialized forms of knitting the needle may be passed between active stitches being held on another needle, or indeed between/through inactive stitches that have been knit previously.
Needlestick injuries are among the top three injuries that occur among material-recovery facility workers who sort through trash to remove recyclable items from the community-collected garbage. Housekeeping and janitorial workers in public sites, including hotels, airports, indoor and outdoor recreational venues, theaters, retails stores, and schools are at daily risk of exposure to contaminated syringes. Needlestick injuries that occur in children from discarded needles in community settings, such as parks and playgrounds, are especially concerning. Not only for families but also for the entire community. While the exact number of needlestick injuries in children in the US is unknown, even one injury in a child is enough to cause public alarm. Studies in Canada have reported 274 injuries from needlesticks in children with the majority being boys (64.2%) and occurring from needles discarded in streets and/or parks (53.3%).
Wire has many uses. It forms the raw material of many important manufacturers, such as the wire netting industry, engineered springs, wire-cloth making and wire rope spinning, in which it occupies a place analogous to a textile fiber. Wire-cloth of all degrees of strength and fineness of mesh is used for sifting and screening machinery, for draining paper pulp, for window screens, and for many other purposes. Vast quantities of aluminium, copper, nickel and steel wire are employed for telephone and data cables, and as conductors in electric power transmission, and heating. It is in no less demand for fencing, and much is consumed in the construction of suspension bridges, and cages, etc. In the manufacture of stringed musical instruments and scientific instruments, wire is again largely used. Carbon and stainless spring steel wire have significant applications in engineered springs for critical automotive or industrial manufactured parts/components. Pin and hairpin making; the needle and fish-hook industries; nail, peg, and rivet making; and carding machinery consume large amounts of wire as feedstock.
Another tattoo alternative is henna-based tattoos, which generally contain no additives. Henna is a plant-derived substance which is painted on the skin, staining it a reddish-orange-to-brown color. Because of the semi-permanent nature of henna, they lack the realistic colors typical of decal temporary tattoos. Due to the time-consuming application process, it is a relatively poor option for children. Dermatological publications report that allergic reactions to natural henna are very rare and the product is generally considered safe for skin application. Serious problems can occur, however, from the use of henna with certain additives. The FDA and medical journals report that painted black henna temporary tattoos are especially dangerous.
The earliest known surviving textiles are samples of fiberwork found in Guitarrero Cave, Peru dating back to 8000 BCE. Early fiberwork by the Norte Chico civilization consisted of plant fibers that were intertwined and knotted to form baskets and other containers. Surviving examples of finely spun thread and simple cloths indicate that knowledge of spinning and weaving had already been well-established and developed in the area.
While needlestick injuries have the potential to transmit bacteria, protozoa, viruses and prions, the risk of contracting hepatitis B, hepatitis C, and HIV is the highest. The World Health Organization estimated that in 2000, 66,000 hepatitis B, 16,000 hepatitis C, and 1,000 HIV infections were caused by needlestick injuries. In places with higher rates of blood-borne diseases in the general population, healthcare workers are more susceptible to contracting these diseases from a needlestick injury.
Somewhat less common are surface anchors, commonly made from surgical implant-grade titanium. A surface anchor has two parts: a base or foot which is inserted under the dermis during the piercing process and which incorporates a stem exposed to the surface, and a decorative disc or ball of jewelry which typically appears flush with the surface of the skin. Surface anchor nape piercings are most commonly found placed symmetrically on either side of the spine at the nape.
The equipment typically includes new syringes and needles, alcoholic swabs, rinse eye drops as sterile water, filter (cotton or syringe filter like Sterifilt), tourniquet, and a clean spoon or Stericup. In order to minimize the chance of bacteria or viruses entering the bloodstream, people are advised to wash their hands with soap and warm water. However, as people do not always have access to hot water and soap when they are injecting, the philosophy of harm reduction seeks to find the most realistic and reliable option that drug users will take; a process that takes much time or access to material is unlikely to be used frequently. Alcohol swabs are commonly distributed with injecting equipment, and while they are less effective than hand washing, their use is more effective than nothing. Any sharing of injecting equipment, even tourniquets, is highly discouraged, due to the high danger of transmitting bacteria and viruses via the equipment.
Flax is believed to be the oldest fiber that was used to create textiles, as it was found in the tombs of mummies from as early as 6500 B.C. The fibers from the flax are taken from the filaments in the stem of the plant, spun together to create long strands, and then woven into long pieces of linen that were used from anything from bandages to clothing and tapestries. Each fiber's length depends on the height of the leaf that it is serving, with 10 filaments in a bundle serving each leaf on the plant. Each filament is the same thickness, giving it a consistency that is ideal for spinning yarn. The yarn was best used on warping boards or warping reels to create large pieces of cloth that could be dyed and woven into different patterns to create elaborate tapestries and embroideries. One example of how linen was used is in the picture of a bandage that a mummy was wrapped in, dated between 305 and 30 B.C. Some of the bandages were painted with hieroglyphs if the person being buried was of importance to the community.
Textiles are often dyed, with fabrics available in almost every colour. The dyeing process often requires several dozen gallons of water for each pound of clothing. Coloured designs in textiles can be created by weaving together fibres of different colours (tartan or Uzbek Ikat), adding coloured stitches to finished fabric (embroidery), creating patterns by resist dyeing methods, tying off areas of cloth and dyeing the rest (tie-dyeing), or drawing wax designs on cloth and dyeing in between them (batik), or using various printing processes on finished fabric. Woodblock printing, still used in India and elsewhere today, is the oldest of these dating back to at least 220 CE in China. Textiles are also sometimes bleached, making the textile pale or white.
Textiles are sometimes finished by chemical processes to change their characteristics. In the 19th century and early 20th century starching was commonly used to make clothing more resistant to stains and wrinkles.
The material of choice for producing these screws is stainless steel typically 18-8 (303). At the tip of the screw most commonly a stainless steel ball is either pressed or glued into place to provide a single point contact for the surface being moved. Common usage has shown the glue method of attaching the ball to be troublesome in many applications as some commonly used glues (Super Glue) tend to outgas and degrade over time in this application.
Modern commercial sea anchors are usually made of cloth, shaped like a parachute or cone, and rigged so that the wider end leads and the narrower end trails. When deployed, this type of sea anchor floats just under the surface, and the water moving past the sea anchor keeps it filled. Some varieties are cylindrical, with an adjustable opening in the rear that allows the amount of braking to be adjusted when deployed.
American mechanic Walter Hunt is regarded as the inventor of the safety pin that bears resemblance to those used today. The safety pin included a clasp that covered the point and kept it from opening, and a circular twist at the bend to act as a spring and hold it in place. Charles Rowley (Birmingham, England) independently patented a similar safety pin in October 1849, although the company no longer makes these.
Indigo is natural dye from a plant (Indigofera tinctoria, suffructicosa, or arrecta) that can be added to henna or layered on top of it to create brown to black colors in the hair. Henna is orange, and indigo is blue, so as complementaries on a standard color wheel, the two colors' combined effect is to create brown tones. Like henna, indigo may fade after one application, but it becomes permanent on the hair with repeated use.
De Mestral gave the name "Velcro", a portmanteau of the French words "velour" ("velvet") and "crochet" ("hook"), to his invention as well as his company, which continues to manufacture and market the fastening system.
Longships for the most part used two different kinds of anchors. The most common was a natural wood yoke formed from a tree branch. The weight was supplied by a stone passing laterally through the U of the yoke. The top of the yoke was closed by either a length of hardwood or a curved iron head, which kept the stone in place. One side of the head stuck out so it could dig into mud or sand. In the Ladby ship burial in Denmark, a unique iron anchor has been found, resembling the modern fisherman's anchor but without the crossbar. The cross bar may have rusted away. This anchor—made of Norwegian iron—has a long iron chain to which the hemp warp was attached. This construction has several advantages when anchored in deep waters or in rough seas.
There are many variations and designs. Women usually apply mehndi designs to their hands and feet, though some, including cancer patients and women with alopecia occasionally decorate their scalps. The standard color of henna is brown, but other design colors such as white, red, black and gold are sometimes employed.
Also known as a cook's knife or French knife, the chef's knife is an all-purpose knife that is curved to allow the cook to rock the knife on the cutting board for a more precise cut. The broad and heavy blade also serves for chopping bone instead of the cleaver, making this knife the all purpose heavy knife for food preparation. Chef's knives are most commonly available between 15 cm and 30 cm (6 and 12 inches), though 20 cm (8 inches) is the most common size.
Condoms, Needles and Negotiations was born out of the necessity of failing marital monogamy. CNN stands for Condoms, Needles and Negotiation. In sub-Saharan Africa, Uganda included, married women in monogamous relationships are at a disadvantage due to the lack of rights within marriage, bargaining power, and domestic violence. The need was discovered as most new HIV cases come from HIV women contracting the disease in their marriage through their husbands. In this way, AB abstinence-only education falls short for protecting the lives of those practicing it. The Condoms part of CNN is two-fold to reduce condom stigma and promote use within the B (Be Faithful) section of AB. Women are still practicing faithfulness, but in order to protect their health, they still need to be able to understand and use condoms. The next N in CNN covers needle exchange, which doesn't relate to abstinence-only sex education. But the third N stands for Negotiation, which again plays a part for individuals practicing faithfulness who could still be harmed. Negotiation informs partners of the risks they might encounter if their partner is not being monogamous and teaches them skills to bargain in their position in the relationship.
Walter Hunt invented the safety pin by forming an eight-inch brass pin into a bent pin with a spring and guard. He sold the rights to his invention to pay a debt to a friend, not knowing that he could have made millions of dollars.
Nakiri bōchō (, translation: knife for cutting greens) and usuba bōchō (, thin knife) are Japanese-style vegetable knives. They differ from the "deba bōchō" in their shape, as they have a straight blade edge suitable for cutting all the way to the cutting board without the need for a horizontal pull or push. These knives are also much thinner. While the "deba bōchō" is a heavy blade for easy cutting through thin bones, the blade is not suitable for chopping vegetables, as the thicker blade can break the vegetable slice. The "nakiri bōchō" and the "usuba bōchō" have a much thinner blade. This does not help with cutting small bones in fish or meat, but is useful for cutting vegetables.
Circular knitting or knitting in the round is a form of knitting that creates a seamless tube. When knitting circularly, the knitting is cast on and the circle of stitches is joined. Knitting is worked in rounds (the equivalent of rows in flat knitting) in a spiral. Originally, circular knitting was done using a set of four or five double-pointed needles. Later, circular needles were invented, which can also be used to knit in the round: the circular needle looks like two short knitting needles connected by a cable between them.
Originally, circular knitting was done using a set of four or five double-pointed knitting needles. Circular needles were later invented making this type of knitting easier. A circular needle resembles two short knitting needles connected by a cable of varying length between them. A circular knitting needle with a long cable can be used in place of straight needles to create larger flat-knitted pieces of fabric. Both types of circular knitting are used in creating pieces that are circular or tube-shaped, such as hats, socks, mittens, sleeves, and entire sweaters.
The oldest type of needle is the straight double-pointed needle. Double-pointed needles are tapered at both ends, which allows them to be knit from either end. They are typically used (and sold) in sets of four and five, and are commonly used for circular knitting. Since the invention of the circular needle, they have been most commonly used to knit smaller tube-shaped pieces such as sleeves, collars, and socks. Usually two needles are active while the others hold the remaining stitches. Double-pointed needles are somewhat shorter than single-pointed or circular needles, and are usually used in the 13–20 cm length range, although they are also made longer.
The most widely recognized form of needle is the single-pointed needle. It is a slender, straight stick tapered to a point at one end, with a knob at the other end to prevent stitches from slipping off. Such needles are always used in pairs and are usually 10-16 inches (25.4–40.6 cm) long but, due to the compressibility of knitted fabrics, may be used to knit pieces significantly wider. The knitting of new stitches occurs only at the tapered ends. Fictional depictions of knitting in movies, television programs, animation, and comic strips almost always show knitting done on straight needles. Both Wallace and Gromit and Monty Python, for example, show this type of knitting.