Nuts (2012 film)
Nuts is a 2012 French comedy film directed by Yann Coridian. Known under the title Nuts, it stars Éric Elmosnino, Sophie Quinton and Valeria Golino. At the age of 41 François seems to be happy, he is married to his first and only love Anne and together they have two children. When a minor incident triggers a tantrum, François finds himself soon in an asylum for the mentally insane. After his release he is shunned by Anne. Desperate to get Anne back he tries to redeem himself but his parents as well as his best friend are less supportive than he hoped, it is the first film directed by Yann Coridian. It is the debut film of singer Luce. Nuts on IMDb
Gahan Wilson is an American author and illustrator known for his cartoons depicting horror-fantasy situations. Wilson was born in Illinois, he was married to author Nancy Winters from 1966 until her death in 2019. Wilson's cartoons and illustrations are drawn in a playfully grotesque style and have a dark humor, compared to the work of The New Yorker cartoonist and Addams Family creator Charles Addams, but while both feature vampires and other traditional horror elements in their work, Addams' cartoons are gothic and old-fashioned, while Wilson's work is more contemporary and confrontational, featuring atomic mutants, subway monsters and serial killers. Addams' work appears to be funny without significant satirical intent, while Wilson has a specific point to make. Wilson was inspired by the irreverent work of the various satiric Mad and Punch cartoonists, as well as the science fiction monster films of the 1950s, his cartoons and prose fiction appeared in Playboy, Collier's and The New Yorker for 50 years.
In addition to his cartoons for The Magazine of Fantasy & Science Fiction, he wrote movie and book reviews for that publication. From 1992 through end of publication, he prepared all the front covers for the annual book Passport to World Band Radio, he has been a movie review columnist for The Twilight Zone Magazine and a book critic for Realms of Fantasy magazine. His comic strip Nuts, which appeared in National Lampoon, was a reaction against what he saw as the saccharine view of childhood in strips like Peanuts, his hero, The Kid, sees the world as dark and unfair—but occasionally a fun place. Wilson illustrated a short story for Harlan Ellison's anthology Again, Dangerous Visions; the "title" is a black blob, the story is about an ominous black blob that appears on the page, growing at an alarming rate. He has contributed short stories to other publications as well. Wilson created Gahan Wilson's The Ultimate Haunted House, with Byron Preiss; the goal is to collect 13 keys in 13 hours from the 13 rooms of a house by interacting in various ways with characters and the house itself.
Wilson wrote the 1992 animated short Diner. In 2009, Fantagraphics Books released Gahan Wilson: 50 Years of Playboy Cartoons, a slipcased, three-volume collection of Wilson's cartoons and short stories for that magazine. A collection of his work, Fifty Years of Gahan Wilson, was published in 2010. Fantagraphics announced a "complete" edition of Nuts in the spring of 2011. In 2019, his stepson announced. In 2005, Wilson was recognized with Lifetime Achievement from the World Fantasy Awards, he received the World Fantasy Convention Award in 1981. He received the National Cartoonists Society's Milton Caniff Lifetime Achievement Award in 2005. Wilson is the subject of a feature-length documentary film, Gahan Wilson: Born Dead, Still Weird, directed by Steven-Charles Jaffe, he was an influence on alternative cartoonists, including Gary Larson, John Callahan and Bill Plympton. Gahan Wilson's Graveside Manner The Man in the Cannibal Pot I Paint What I See Playboy's Gahan Wilson Gahan Wilson's Cracked Cosmos The Weird World of Gahan Wilson And Then We'll Get Him!
Nuts Playboy's Gahan Wilson Is Nothing Sacred? ISBN 978-0-312-43707-7 Gahan Wilson's America Eddy Deco's Last Caper Everybody's Favorite Duck A Night in the Lonesome October Still Weird The Big Book of Weirdos Even Weirder The Big Book of Freaks The Cleft and Other Odd Tales Gravediggers' Party Monster Party The Best of Gahan Wilson Pop Art Gahan Wilson: 50 Years of Playboy Cartoons Nuts: A Graphic Novel by Gahan Wilson Gahan Wilson Sunday Comics Gahan Wilson's Out There Matthew Looney series written by Jerome Beatty, Jr. illustrated by Gahan Wilson: Matthew Looney's Voyage to the Earth Matthew Looney's Invasion of the Earth Matthew Looney in the Outback Matthew Looney and the Space Pirates Maria Looney on the Red Planet Maria Looney and the Cosmic Circus Maria Looney and the Remarkable Robot Harry, the Fat Bear Spy Harry and the Sea Serpent The Bang Bang Family Spooky Stories for a Dark and Stormy Night Gahan Wilson's Favorite Tales of Horror The First World Fantasy Awards Charles Addams Robert Crumb Edward Gorey Gary Larson Lorin Morgan-Richards Angus Oblong Shel Silverstein Some bibliographical information derived from The Encyclopedia of Fantasy ed. John Clute and John Grant.
White, Dale Andrew. "Little and Green": an interview with macabre cartoonist Gahan Wilson. Twin Rivers Press. ASIN B004WTUMGC. Wiater, Stanley. "Gahan Wilson: Overheard In Appreciation". In Bosto
Siege of Bastogne
The Siege of Bastogne was an engagement in December 1944 between American and German forces at the Belgian town of Bastogne, as part of the larger Battle of the Bulge. The goal of the German offensive was the harbour at Antwerp. In order to reach it before the Allies could regroup and bring their superior air power to bear, German mechanized forces had to seize the roadways through eastern Belgium; because all seven main roads in the densely wooded Ardennes highlands converged on Bastogne, just a few miles away from the border with neighbouring Luxembourg, control of its crossroads was vital to the German attack. The siege was from 20 to 27 December, until the besieged American forces were relieved by elements of General George Patton's Third Army. After the successful invasion of Normandy and the subsequent eastward push through France, the Allied front lines extended from Nijmegen in the north down to neutral Switzerland in the south; the valuable port city of Antwerp had been captured during the push, by the time winter arrived, the Allies had control of German territory near the city of Aachen.
Adolf Hitler soon laid out a plan to attack the Allied lines in Luxembourg. Despite major misgivings from his senior commanders, including Gerd von Rundstedt and Walther Model, the plan was not modified and the jump-off date was set as 16 December 1944. Meanwhile, the Allied commanders considered the Ardennes area to be unsuitable for a large-scale German attack because of terrain issues. In addition, intelligence reports suggested that the only German divisions stationed in the area were weary, in the weeks leading up to the assault, no Allied commander saw reason to believe that an attack was imminent. Bastogne, a hub city that commanded several important roads in the area, was defended by the 28th Infantry Division, which had seen continuous fighting from 22 July to 19 November, before being assigned to this quiet area; the Allies believed only an infantry division was present opposite the 28th Infantry, they believed any attack along this sector would be limited in scale. The seven roads in and out of Bastogne were critical to the movement of German armor, making Allied retention of the roads imperative.
Hasso von Manteuffel—commanding the 5th Panzer Army—gave Heinrich Freiherr von Lüttwitz′s XLVII Panzer Corps the responsibility of capturing Bastogne, before crossing the Meuse near Namur. Lüttwitz planned to attack a 7 mi front with three divisions: the 26th Volksgrenadier and the 2nd Panzer would lead the assault, with the Panzer-Lehr-Division behind them. Opposing this significant force were two battalions of the 110th Infantry Regiment, responsible for a 9 mi front along the Our River which forms the border between Germany and neighbouring Luxembourg; the Allied forces were gathered into small groups at major Luxembourgish villages, with outposts along the river manned only during the daytime. The forces were too thin to maintain an battle line, they focused their attention on the four roads that crossed the Our. Due to heavy rain preceding the German attack, only one of the roads was in good enough condition to be used as a crossing point—the northernmost road, which crossed the Our at Dasburg on its way to the Luxembourgish town of Clervaux and Bastogne.
The 2nd Panzer Division was assigned to cross the river along this road, while the 26th Volksgrenadier Division would construct a bridge near Gemünd for its crossing. Lüttwitz realized the importance of the road network of Bastogne—he knew that the town had to be captured before his corps could venture too far westward. Therefore, he ordered the Panzer-Lehr Division' to push forward to Bastogne as soon as his other troops had crossed the Clerf River in Northern Luxembourg. On the evening of 15 December, the 26th Volksgrenadier established an outpost line on the west bank of the Our, something they did during the nighttime. At 03:00, engineers began ferrying men and equipment over the river where they began assembling at the departure point, quite close to the American garrisons. At 05:30, the German artillery began bombarding the American positions, knocking out telephone lines, as the infantry started to advance; the Germans attacked swiftly, their advances made possible by sheer weight of numbers.
In the Luxembourgish village of Weiler, one American company, supported by some mortars and a platoon of anti-tank guns, lasted until nightfall against repeated attacks from multiple German battalions. German engineers completed bridges over the Our before dark, armor began moving to the front, adding to the Germans' vast numerical superiority, but in the end, the Germans were delayed by the American defenders—their plan to cross the Clerf River by nightfall on the first day was delayed by two days. On 19 December, the 28th Division command post transferred to Bastogne from Wiltz, a large Luxembourgish town to the southeast. At Wiltz, the division put up its last stand; the 44th Engineer Battalion was set up north of the town, but they were soon overwhelmed and retreated into the town, blowing up a bridge behind them. This small force—numbering no more than 500 in total—held out until the evening, when their position became untenable and they retreated to the west. With the 110th Infantry destroyed as an effective combat unit, it would be up to the rest of the Allied army to defend Bastogne.
Despite several notable signs in t
A nut is a type of fastener with a threaded hole. Nuts are always used in conjunction with a mating bolt to fasten multiple parts together; the two partners are kept together by a combination of their threads' friction, a slight stretching of the bolt, compression of the parts to be held together. In applications where vibration or rotation may work a nut loose, various locking mechanisms may be employed: lock washers, jam nuts, specialist adhesive thread-locking fluid such as Loctite, safety pins or lockwire in conjunction with castellated nuts, nylon inserts, or oval-shaped threads. Square nuts, as well as bolt heads, were the first shape made and used to be the most common because they were much easier to manufacture by hand. While rare today due to the reasons stated below for the preference of hexagonal nuts, they are used in some situations when a maximum amount of torque and grip is needed for a given size: the greater length of each side allows a spanner to be applied with a larger surface area and more leverage at the nut.
The most common shape today is hexagonal, for similar reasons as the bolt head: six sides give a good granularity of angles for a tool to approach from, but more corners would be vulnerable to being rounded off. It takes only one sixth of a rotation to obtain the next side of the grip is optimal. However, polygons with more than six sides do not give the requisite grip and polygons with fewer than six sides take more time to be given a complete rotation. Other specialized shapes exist for certain needs, such as wingnuts for finger adjustment and captive nuts for inaccessible areas. A wide variety of nuts exists, from household hardware versions to specialized industry-specific designs that are engineered to meet various technical standards. Fasteners used in automotive and industrial applications need to be tightened to a specific torque setting, using a torque wrench. Nuts are graded with strength ratings compatible with their respective bolts. An SAE class 5 nut can support the proof load of an SAE class 5 bolt, so on.
Castellated nut Distorted thread locknut Centerlock nut Elliptical offset locknut Toplock nut Interfering thread nut Tapered thread nut Jam nut Jet nut Keps nut with a star-type lock washer Nyloc plate nut Polymer insert nut Security locknut Serrated face nut Serrated flange nut Speed nut Split beam nut BINX nut Note that flat sizes differ between industry standards. For example, wrench sizes of fastener used in Japanese built cars comply with JIS automotive standard. In normal use, a nut-and-bolt joint holds together because the bolt is under a constant tensile stress called the preload; the preload pulls the nut threads against the bolt threads, the nut face against the bearing surface, with a constant force, so that the nut cannot rotate without overcoming the friction between these surfaces. If the joint is subjected to vibration, the preload increases and decreases with each cycle of movement. If the minimum preload during the vibration cycle is not enough to hold the nut in contact with the bolt and the bearing surface the nut is to become loose.
Specialized locking nuts exist to prevent this problem, but sometimes it is sufficient to add a second nut. For this technique to be reliable, each nut must be tightened to the correct torque; the inner nut is tightened to about a quarter to a half of the torque of the outer nut. It is held in place by a wrench while the outer nut is tightened on top using the full torque; this arrangement causes the two nuts to push on each other, creating a tensile stress in the short section of the bolt that lies between them. When the main joint is vibrated, the stress between the two nuts remains constant, thus holding the nut threads in constant contact with the bolt threads and preventing self-loosening; when the joint is assembled the outer nut bears the full tension of the joint. The inner nut functions to add a small additional force to the outer nut and does not need to be as strong, so a thin nut can be used. Bickford, John H..
Nuts (1987 film)
Nuts is a 1987 American drama film directed by Martin Ritt and starring Barbra Streisand and Richard Dreyfuss. The screenplay by Tom Topor, Darryl Ponicsan, Alvin Sargent is based on Topor's 1979 play of the same name, it was both Robert Webber's final feature film. It included Leslie Nielsen's last non-comedic role; when call girl Claudia Draper kills client Allen Green in self-defense, her mother Rose and stepfather Arthur attempt to have her declared mentally incompetent by Dr. Herbert Morrison in order to avoid a public scandal. Claudia knows that, if her parents succeed, she will be remanded to a mental institution indefinitely, so she is determined to prove she is sane enough to stand trial; the attorney her parents hire to defend her quits after Claudia assaults him, so the court appoints public defender Aaron Levinsky to handle her case. She resists him as well until she accepts that he is on her side. Aaron begins to probe her background to determine how the child of model upper middle class parents could find herself in this situation, with each piece of her past he uncovers, he receives additional, disturbing insight into what brought Claudia to this crossroads in her life.
During a cross-examination, it is revealed. Claudia takes the stand in her own defense, asserts that she is not insane because she doesn't fit society's image of what a woman should be. In the end, the judge decides she is competent to stand trial and she leaves the courtroom on her own recognizance while she awaits her trial; the movie ends with information stating Claudia stood trial for first-degree manslaughter, with Aaron as her attorney, she was acquitted. Barbra Streisand as Claudia Draper Richard Dreyfuss as Aaron Levinsky Maureen Stapleton as Rose Kirk Karl Malden as Arthur Kirk Eli Wallach as Dr. Herbert Morrison Robert Webber as Francis MacMillan James Whitmore as Judge Stanley Murdoch Leslie Nielsen as Allen Green William Prince as Clarence Middleton Dakin Matthews as Judge Lawrence Box In 1980, Universal Studios purchased the film rights to Tom Toper's off-off-Broadway play and financed its move to Broadway; the studio greenlighted the film adaptation in January 1982 and announced Mark Rydell would produce and direct Debra Winger in the low-budget film.
Barbra Streisand had campaigned for the role, but filming was scheduled to begin in the summer of 1982 and Rydell was unwilling to postpone the project while she completed Yentl. Universal was concerned about the controversial nature of Nuts and sold it to Warner Bros. where it remained in limbo until 1986, when Streisand was signed for $5 million plus a percentage of the gross. Topor and Rydell clashed about the film's focus and Rydell quit, citing scheduling problems, budgetary concerns, artistic differences, it was his second time. Streisand assumed producing duties but declined to direct, Martin Ritt was hired to replace Rydell. Streisand hired Andrzej Bartkowiak, who had filmed the documentary chronicling the making of The Broadway Album, as director of photography, she researched her role by studying schizophrenic patients in a mental ward and interviewing prostitutes at a Los Angeles brothel, began to work on her own draft of the screenplay. Although she received no screen credit for her work, the studio publicly acknowledged her contribution.
Richard Dreyfuss was offered the role of Aaron Levinsky, when he passed Dustin Hoffman suggested himself, but Warner refused to meet his artistic and salary demands. At various times the media reported Marlon Brando, Paul Newman, Al Pacino were considered. Original choice Dreyfuss was cast, filming was postponed yet again to allow him to complete Tin Men; this film has the distinction of being Leslie Nielsen's final dramatic film role. Nielsen had been establishing himself in comedy and the next year would star in The Naked Gun. Aside from a few days of exterior shooting in Manhattan, the film, budgeted at $25 million, was made in Los Angeles. Principal photography ended in early February; when the film previewed in October 1987, audience feedback was positive, leading Streisand to believe it was powerful enough to sell itself. She refused to promote it other than in a three-part interview with Gene Shalit on The Today Show, although she participated in a press conference when the film was released in foreign markets.
Nuts received mixed reviews from critics and holds a 36% rating on Rotten Tomatoes based on 22 reviews. Janet Maslin of The New York Times observed, "The film is entirely adrift. A group of three screenwriters... have not succeeded in giving it any momentum at all... The material is exceptionally talky and becalmed, the central question none too compelling, the visual style distractingly cluttered … Still, Miss Streisand... manages to be every inch the star."Roger Ebert of the Chicago Sun-Times rated the film two out of four stars and noted that "the movie's revelations are told in such dreary, weather-beaten old movie terms that we hardly care … As the courtroom drama slogs its weary way home, Streisand's authentic performance as a madwoman seems harder and harder to sustain... Nuts is just a futile exercise in courtroom cliches, surrounding a good performance that doesn't fit."Rita Kempley of The Washington Post called the film "a consistent character study, paced like a good thriller" and cited Barbra Streisand's "bravissimo performance".
She added, "She is so dazzling, in fact, that she blinds us to the pat psychology of the facile script... There's heat in the moment, but there's nothing to chew on afterward... N
A ball screw is a mechanical linear actuator that translates rotational motion to linear motion with little friction. A threaded shaft provides a helical raceway for ball bearings; as well as being able to apply or withstand high thrust loads, they can do so with minimum internal friction. They are made to close tolerances and are therefore suitable for use in situations in which high precision is necessary; the ball assembly acts as the nut. In contrast to conventional leadscrews, ballscrews tend to be rather bulky, due to the need to have a mechanism to re-circulate the balls. Another form of linear actuator based on a rotating rod is the threadless ballscrew, a.k.a. "rolling ring drive". In this design, three rolling-ring bearings are arranged symmetrically in a housing surrounding a smooth actuator rod or shaft; the bearings are set at an angle to the rod, this angle determines the direction and rate of linear motion per revolution of the rod. An advantage of this design over the conventional ballscrew or leadscrew is the practical elimination of backlash and loading caused by preload nuts.
Ball screws are used in aircraft and missiles to move control surfaces for electric fly by wire, in automobile power steering to translate rotary motion from an electric motor to axial motion of the steering rack. They are used in machine tools and precision assembly equipment. High precision ball screws are used in steppers for semiconductor manufacturing; the ball screw was invented by Rudolph G. Boehm of Texas, he was granted in 1929 US Patent 1,704,031 titled "Antifriction nut". Early precise screwshafts were produced by starting with a low precision screwshaft, lapping the shaft with several spring-loaded nut laps. By rearranging and inverting the nut laps, the lengthwise errors of the nuts and shaft were averaged; the repeatable shaft's pitch is measured against a distance standard. A similar process is sometimes used today to produce reference standard screw shafts, or master manufacturing screw shafts. A ball screw is used to expand the Deployable Tower Assembly structure on the James Webb Space Telescope To maintain their inherent accuracy and ensure long life, great care is needed to avoid contamination with dirt and abrasive particles.
This may be achieved by using rubber or leather bellows to or enclose the working surfaces. Another solution is to use a positive pressure of filtered air when they are used in a semi-sealed or open enclosure. While reducing friction, ball screws can operate with some preload eliminating backlash between input and output; this feature is essential when they are used in computer-controlled motion-control systems, e.g. CNC machine tools and high precision motion applications. Depending upon their lead angle, ball screws can be back-driven due to their low internal friction, they are undesirable for hand-fed machine tools, as the stiffness of a servo motor is required to keep the cutter from grabbing the work and self-feeding, that is, where the cutter and workpiece exceed the optimum feedrate and jam or crash together, ruining the cutter and workpiece. Cost is a major factor as Acme screws are cheaper to manufacture. Low friction in ball screws yields high mechanical efficiency compared to alternatives.
A typical ball screw may be 90 percent efficient, versus 20 to 25 percent efficiency of an Acme lead screw of equal size. Lack of sliding friction between the nut and screw lends itself to extended lifespan of the screw assembly, reducing downtime for maintenance and parts replacement, while decreasing demand for lubrication. This, combined with their overall performance benefits and reduced power requirements, may offset the initial costs of using ball screws. Ball screws may reduce or eliminate backlash common in lead screw and nut combinations; the balls may be preloaded so that there is no "wiggle" between the ball ball nut. This is desirable in applications where the load on the screw varies such as machining tools. Ball screw shafts may be fabricated by rolling, yielding a less precise, but inexpensive and mechanically efficient product. Rolled ball screws have a positional precision of several thousandths of an inch per foot. High-precision screw shafts are precise to one thousandth of an inch per foot or better.
They have been machined to gross shape, case hardened and ground. The three step process is needed. Hard whirling is a recent precision machining technique that minimizes heating of the work, can produce precision screws from case-hardened bar stock. Instrument quality screw shafts are precise to 250 nanometers per centimeter, they are produced on precision milling machines with optical distance measuring equipment and special tooling. Similar machines are used to produce optical mirrors. Instrument screw shafts are made of Invar, to prevent temperature from changing tolerances too much; the circulating balls travel inside the thread form of the screw and nut, balls are recirculated through various types of return mechanisms. If the ball nut did not have a return mechanism the balls would fall out of the end of the ball nut when they reached the end of the nut. For this reason several different recirculation methods have been developed. An external ballnut employs a stamped tube which picks up balls from the raceway by use of a small pick up fi
Cyperus rotundus is a species of sedge native to Africa and central Europe, southern Asia. The word cyperus derives from the Greek κύπερος, rotundus is from Latin, meaning "round"; the earliest attested form of the word cyperus is the Mycenaean Greek, ku-pa-ro, written in Linear B syllabic script. Cyperus rotundus is a perennial plant; the names "nut grass" and "nut sedge" – shared with the related species Cyperus esculentus – are derived from its tubers, that somewhat resemble nuts, although botanically they have nothing to do with nuts. As in other Cyperaceae, the leaves sprout in ranks of three from the base of the plant, around 5–20 cm long; the flower stems have a triangular cross-section. The flower is bisexual and has three stamina and a three-stigma carpel, with the flower head having three to eight unequal rays; the fruit is a three-angled achene. The root system of a young plant forms white, fleshy rhizomes, up to 25 mm in dimension, in chains; some rhizomes grow upward in the soil form a bulb-like structure from which new shoots and roots grow, from the new roots, new rhizomes grow.
Other rhizomes grow horizontally or downward, form dark reddish-brown tubers or chains of tubers. It prefers dry conditions, but will tolerate moist soils, grows in wastelands and in crop fields. C. rotundus was part of a set of starchy tuberous sedges that may have been eaten by Pliocene hominins. It was a staple of Aboriginal populations in Central Australia. Biomarkers and microscopic evidence of C. rotundus are present in human dental calculus found at the Al Khiday archaeological complex in central Sudan dating from before 6700 BC to the Meroitic pre-Islamic Kingdom of 300–400 AD. It is suggested that C. rotundus consumption may have contributed to the low frequency of dental caries among the Meroitic population of Al Khiday because of its ability to inhibit Streptococcus mutans. C. Rotundus was employed in ancient Egypt, Mycenean Greece, elsewhere as an aromatic and to purify water, it was used by ancient Greek physicians Theophrastus, Pliny the Elder, Dioscorides as both medicine and perfume.
C. rotundus has many beneficial uses. It is a staple carbohydrate in tropical regions for recent hunter-gatherers and is a famine food in some agrarian cultures. In traditional Chinese medicine, C. rotundus is considered the primary qi-regulating herb. The plant is mentioned in the ancient Indian ayurvedic medicine Charaka Samhita. Modern ayurvedic medicine uses the plant, known as musta or musta moola churna, for fevers, digestive system disorders and other maladies. Arabs of the Levant traditionally use roasted tubers, while they are still hot, or hot ashes from burned tubers, for wounds and carbuncles. Western and Islamic herbalists including Dioscorides, Serapion, Paulus Aegineta, Avicenna and Charles Alston have described its use as a stomachic and deobstruent, in emollient plasters; the antibacterial properties of the tubers may have helped prevent tooth decay in people who lived in Sudan 2000 years ago. Less than 1% of that local population's teeth had cavities, abscesses, or other signs of tooth decay, though those people were farmers.
Several chemical substances have been identified in C. rotundus: α-cyperone, β-selinene, patchoulenone, sugeonol and isokobusone. A sesquiterpene, rotundone, so called because it was extracted from the tuber of this plant, is responsible for the spicy aroma of black pepper and the peppery taste of certain Australian Shiraz wines. Extract from leaves and tubers of Cyperus rotundus L. increase the adventitious rooting of different species. These extracts contain a large amount of auxins and phenolic compounds that promote the rooting of cuttings and seedlings. Despite the bitter taste of the tubers, they have nutritional value; some part of the plant was eaten by humans at some point in ancient history. The plant has a high amount of carbohydrates; the plant is eaten in Africa in famine-stricken areas. In addition, the tubers are an important nutritional source of minerals and trace elements for migrating birds such as cranes; the well dried coco grass is used in mats for sleeping. Cyperus rotundus is one of the most invasive weeds known, having spread out to a worldwide distribution in tropical and temperate regions.
It has been called "the world's worst weed" as it is known as a weed in over 90 countries, infests over 50 crops worldwide. In the United States it occurs from Florida north to New York and Minnesota and west to California and most of the states in between. In the uplands of Cambodia, it is described as an important agricultural weed, its existence in a field reduces crop yield, both because it is a tough competitor for ground resources, because it is allelopathic, the roots releasing substances harmful to other plants. It has a bad effect on ornamental gardening; the difficulty to control it is a result of its intensive system of underground tubers, its resistance to most herbicides. It is one of the few weeds that cannot be stopped with plastic mulch. Weed pulling in gardens results in breakage of roots, leaving tubers in the ground from which new plants emerge quickly. Ploughing distributes the tubers in the field, worsening