A centrifuge is a piece of equipment that puts an object in rotation around a fixed axis, applying a force perpendicular to the axis of spin that can be strong. The centrifuge works using the sedimentation principle, where the centrifugal acceleration causes denser substances and particles to move outward in the radial direction. At the same time, objects that are less dense move to the center. In a laboratory centrifuge that uses sample tubes, the radial acceleration causes denser particles to settle to the bottom of the tube, while low-density substances rise to the top. There are three types of centrifuge designed for different applications. Industrial scale centrifuges are used in manufacturing and waste processing to sediment suspended solids, or to separate immiscible liquids. An example is the cream separator found in dairies. High speed centrifuges and ultracentrifuges able to provide high accelerations can separate fine particles down to the nano-scale, molecules of different masses.
Large centrifuges are used to simulate high acceleration environments. Medium-sized centrifuges are used in washing machines and at some swimming pools to wring water out of fabrics. Gas centrifuges are used for isotope separation, such as to enrich nuclear fuel for fissile isotopes. English military engineer Benjamin Robins invented a whirling arm apparatus to determine drag. In 1864, Antonin Prandtl proposed the idea of a dairy centrifuge to separate cream from milk; the idea was subsequently put into practice by his brother, Alexander Prandtl, who made improvements to his brother's design, exhibited a working butterfat extraction machine in 1875. A centrifuge machine can be described as a machine with a rotating container that applies centrifugal force to its contents. There are multiple types of centrifuge, which can be classified by intended use or by rotor design: Types by rotor design: Fixed-angle centrifuges are designed to hold the sample containers at a constant angle relative to the central axis.
Swinging head centrifuges, in contrast to fixed-angle centrifuges, have a hinge where the sample containers are attached to the central rotor. This allows all of the samples to swing outwards. Continuous tubular centrifuges do not have individual sample vessels and are used for high volume applications. Types by intended use: Laboratory centrifuges, are general-purpose instruments of several types with distinct, but overlapping, capabilities; these include superspeed centrifuges and preparative ultracentrifuges. Analytical ultracentrifuges are designed to perform sedimentation analysis of macromolecules using the principles devised by Theodor Svedberg. Haematocrit centrifuges are used to measure the volume percentage of red blood cells in whole blood. Gas centrifuges, including Zippe-type centrifuges, for isotopic separations in the gas phase. Industrial centrifuges may otherwise be classified according to the type of separation of the high density fraction from the low density one. There are two types of centrifuges: the filtration and sedimentation centrifuges.
For the filtration or the so-called screen centrifuge the drum is perforated and is inserted with a filter, for example a filter cloth, wire mesh or lot screen. The suspension flows through the filter and the drum with the perforated wall from the inside to the outside. In this way the solid material can be removed; the kind of removing depends on the type of centrifuge, for example manually or periodically. Common types are: Screen/scroll centrifuges Pusher centrifuges Peeler centrifuges Inverting filter centrifuges Sliding discharge centrifuges Pendulum centrifuges Sedimentation centrifugesIn the centrifuges the drum is a solid wall; this type of centrifuge is used for the purification of a suspension. For the acceleration of the natural deposition process of suspension the centrifuges use centrifugal force. With so-called overflow centrifuges the suspension is drained off and the liquid is added constantly. Common types are: Separator centrifuges. Though most modern centrifuges are electrically powered, a hand-powered variant inspired by the whirligig has been developed for medical applications in developing countries.
Many designs have been shared for free and open-source centrifuges that can be digitally manufactured. The open-source hardware designs for hand-powered centrifuge for larger volumes of fluids with a radial velocity of over 1750 rpm and over 50 N of relative centrifugal force can be 3-D printed for about $25. Other open hardware designs use custom 3-D printed fixtures with inexpensive electric motors to make low-cost centrifuges or CNC cut out OpenFuge. A wide variety of laboratory-scale centrifuges are used in chemistry, biology and clinical medicine for isolating and separating suspensions and immiscible liquids, they vary in speed, temperature control, other characteristics. Laboratory centrifuges can accept a range of different fixed-angle and swinging bucket rotors able to carry different numbers of centrifuge tubes and rated for specific maximum speeds. Cont
Zero Gravity Corporation is an American company based in Arlington, Virginia of Fort Lauderdale, which operates weightless flights from United States airports. Unlike NASA, ZERO-G is governed under Part 121 of FAA regulations enabling the company to cater to both tourists and researchers alike. Founded by entrepreneur Peter Diamandis, astronaut Byron K. Lichtenberg, NASA engineer Ray Cronise, the company has been operating weightless flights since 2004. Over 15000 were clients as of November 2017. A number of notable passengers have been on weightless flights run by the company, including Penn Jillette and Teller, Martha Stewart, Burt Rutan, Buzz Aldrin, Casey Neistat, John Carmack, Tony Hawk. Theoretical physicist Stephen Hawking completed a shortened flight on April 26, 2007. In April 2006, ZERO-G became the first commercial company to gain permission from the Kennedy Space Center to use its space shuttle runway and landing facilities. On April 21, 2007, it began regular flights from Las Vegas for the general public at ticket prices of US$3,675.
Good Morning America aired promotional footage featuring the show's weatherman Sam Champion during a preview flight in Ohio. On December 9, 2007, Zero G hosted Adam Savage and Jamie Hyneman of MythBusters to disprove the conspiracy theory that the Apollo Moon landing was a hoax. In March 2008, the company was acquired by Space Adventures. On April 20, 2011, a Safety Approval was granted to ZERO-G by the FAA which allows the company to "...offer reduced gravity parabolic flights to prospective suborbital launch operators to meet the applicable components of the crew qualification and training requirements outlined in the Code of Federal Regulations." As of March 2018, the price of a flight for a single passenger is US$5,400 plus tax. The unique Weightless Weddings Experience is included in the list of services Noah and Erin Fulmor were the first couple to get married in weightlessness. Fliers undergo a brief training session before embarking. A flight lasts 90 to 100 minutes, consists of fifteen parabolas, each of which simulates about 30 seconds of reduced gravity: one that simulates Martian gravity, two that simulate Lunar gravity, 12 that simulate weightlessness.
Each parabola begins with the aircraft climbing at a 45-degree angle at 23,000 feet, peaks at 32,000 ft, ends with the aircraft pointed down at a 30-degree angle. The company owns and operates a Boeing 727-227F Advanced, registration N794AJ, dubbed "G-FORCE ONE", it flies parabolic arcs similar to those of NASA's KC-135 reduced gravity aircraft. NASA has a microgravity services contract with ZERO-G, which provided the first flights under this contract on September 9 and 10, 2008. Flight time from Ellington Field near Johnson Space Center was provided for the FASTRACK Space Experiment Platform; the flights were funded by NASA's Strategic Capabilities and Assets Program. Reduced-gravity aircraft Official website Farewell to Gravity Notes on Zero-G flight by John Carmack
Eric Bachmann is an American musician/producer. He is the lead singer of Crooked Archers of Loaf, he grew up in Asheville, North Carolina. He lives in Georgia, he made two atmospheric instrumental albums as Barry Black. His first solo effort, Short Careers was recorded as a score to the film Ball of Wax, his second, To the Races, was released by Saddle Creek Records in 2006. The album, written while living out of his van outside Seattle the previous year, features contributions from Miranda Brown and DeVotchKa violinist Tom Hagerman. From 2013-2016, he was a member of Neko Case's touring band, playing piano. On March 25, 2016, Bachmann released his third solo album, titled Eric Bachmann. On September 7, 2018, he released No Recover on Merge Records, embarked on a tour of both clubs and full band living room shows produced by Undertow Music. Icky Mettle Archers of Loaf Vs the Greatest of All Time Archers of Loaf Vee Vee Archers of Loaf Barry Black, Alias Records – Under the pseudonym Barry Black, featuring appearances from Ben Folds.
Produced by Caleb Southern. Speed of Cattle Archers of Loaf All the Nations Airports Archers of Loaf Tragic Animal Stories, Alias Records – As Barry Black. White Trash Heroes Archers of Loaf Crooked Fingers Crooked Fingers Warm Electronic Recordings Bring on the Snakes Crooked Fingers Warm Electronic Recordings Short Careers, Merge Records Reservoir Songs Vol. 1 Crooked Fingers Merge Records Red Devil Dawn Crooked Fingers Merge Records Dignity and Shame Crooked Fingers Merge Records To the Races, Saddle Creek Records Forfeit/Fortune Red Pig/Constant Artists Records Reservoir Songs Vol. 2 Crooked Fingers Foreign Leisure Records Breaks in the Armor Crooked Fingers, Merge Records Eric Bachmann, Merge Records Eric Bachmann and Jon Rauhouse, Merge Records No Recover, Merge Records Azure Ray - Drawing Down The Moon, Saddle Creek Azure Ray – Hold On Love, Saddle Creek Azure Ray – Burn and Shiver, Warm Electronic Recordings Azure Ray – Azure Ray, Warm Electronic Recordings Micah P. Hinson – Micah P. Hinson and the Opera Circuit, Jade Tree Liz Durrett – Outside Our Gates, Warm Electronic Recordings Spoon – Gimme Fiction, Merge David Dondero – South of the South, Team Love Damien Jurado – On My Way to Absence, Secretly Canadian Laura Minor – Let Evening Come Neko Case – Hell-On, Anti- Eric Bachmann's official website Crooked Fingers official website Saddle Creek Records
John P. Morse is an American former politician, a state senator in the Colorado Senate from 2007 to 2013, serving as president of the senate in 2013, he is a member of the Democratic Party. Morse represented Senate District 11, which encompasses Manitou Springs and eastern Colorado Springs. On April 17, 2009, he was selected to become Colorado's next Senate Majority Leader, following the resignation of Senate President Peter Groff and the promotion of previous Majority Leader Brandon Shaffer. On September 10, 2013, Morse was recalled from office as a reaction to his involvement in passing gun control laws, he was the first legislator to be recalled in the state's history. Morse was born on November 4, 1958 in Petersburg, Virginia into a military family, the eldest of ten children, he earned the Eagle Scout rank in the Boy Scouts of America as a teenager. He graduated from Mitchell High School in Colorado. After working as a Certified Public Accountant, Morse began to pursue a career in public affairs, earning first an MBA from Regis University in 1984 a Master of Public Administration degree from the University of Colorado at Colorado Springs in 1996 and a Ph.
D. in public affairs from the University of Colorado at Denver in 2001. While pursuing advanced degrees, Morse worked for the Colorado Springs Police Department, advancing to the rank of Sergeant. After nine years in Colorado Springs, Morse joined the police staff in Fountain, just south of Colorado Springs. In October 2002, he became acting police chief and was appointed as the permanent police chief in February 2003, he held the chief of police position until November 2003, just nine months later. In 2004, Morse became the President and CEO of Silver Key Senior Services, a Colorado Springs-based non-profit. Morse ran for the Colorado Senate in 2006, won a decisive victory in a competitive district, defeating incumbent Republican legislator Ed Jones. Although Morse had lived in Colorado Springs for over three decades, Colorado Republicans accused Morse of "carpetbagging" for moving into the district from his previous residence just outside district boundaries only a year before the 2006 election.
Advertisements aired during the campaign accused Morse of incompetence as police chief of Fountain, but were pulled from broadcast because of inaccuracies. In the 2007 legislative session, Morse served on the Senate Health and Human Services Committee, the Senate Finance Committee, was Vice-Chair of the Senate Judiciary Committee. During his first term, Morse sponsored legislation to create a pilot mental health services program for discharged combat veterans in Colorado, to change Colorado's concealed carry permit system for firearms. Following the regular legislative session, Morse served on the interim legislative Health Care Task Force and was vice-chair of the Police Officers' and Firefighters' Pension Reform Commission. In November 2007, Morse was elected by the Democratic caucus to serve on the influential Joint Budget Committee. In the 2008 session of the General Assembly, Morse sat on the Joint Budget Committee and chaired the Senate Appropriations Committee, he sat on a special ethics panel investigating possible conflicts of interest for Colorado State Fair engineering contracts received by Sen. Abel Tapia.
Among the legislation sponsored by Morse during the 2008 legislative session were a bill to increase drivers license fees to fund trauma care and require $5000 of trauma care to be covered in car insurance policies, a bill to increase marriage license fees to fund Court Appointed Special Advocate programs. Another of Morse's bills, to establish a database of school security practices for use by Colorado schools and create the Colorado School Safety Resource Center to help school districts with safety plans, was passed by the legislature and signed into law by Gov. Ritter. Morse was the Senate sponsor of successful legislation encouraging judges to consider restorative justice as part of juvenile sentencing, he sponsored legislation to grant public hospitals taxing authority so that they can satisfy the federal definition of a "public hospital" and qualify for federal funding. During the session, Morse was the lone legislator to vote in committee in favor of a proposal to require the use of paper ballot in all 2008 Colorado elections.
As a member of the Joint Budget Committee, Morse was a prominent voice supporting Democratic Party priorities in the state 2008-09 state budget, arguing in favor of increased spending on education and health care. In July 2008, Morse publicly called for an investigation of 4th Judicial District DA John Newsome amid reports that Newsome inappropriately used taxpayer money to pay for over $500 in expenses surrounding a trip to a college football game. Newsome, who faced a challenger in the Republican primary for the district attorney's position, denied wrongdoing and alleged that Morse's accusations were "politics of personal destruction." Both the Colorado Bureau of Investigation and the Colorado Attorney General's office launched investigations into Newsome's conduct. During the 2008 election, Morse was an outspoken critic of El Paso County Clerk and Recorder Bob Balink, whom he accused of implementing a "12-point strategy" to disenfranchise voters including improperly interpreting rules regarding voter registration for students at Colorado College.
Balink's office denied any improper conduct. Following the 2008 general election, Morse was nominated for the posts of Senate President Pro-Tem and Senate Assistant Majority Leader, but lost the caucus' vote for each post to
Rilu Rilu Fairilu is a character franchise created in collaboration by Sanrio and Sega Sammy Holdings, illustrated by character designer Ai Setani. It is the second Sanrio franchise, handled by two companies, the first being Jewelpet; the franchise was launched in December 2015. An anime adaptation produced by Studio DEEN, titled "Rilu Rilu Fairilu ~Yousei no Door~", aired on all TXN stations in Japan from February 6, 2016 to March 25, 2017. A second season titled "Rilu Rilu Fairilu ~Mahou no Kagami~" began airing from April 7, 2017 to March 30, 2018. A 3rd season titled "Oshiete Mahou no Pendulum ~Rilu Rilu Fairilu~" began its airing from July 7, 2018 to January 5, 2019. In a strange magical world of Little Fairilu live the Fairilus: small magical fairies representing flowers and other entities who are all born from the Fairilu Seed; each Fairilu is born with its own key, the Fairilu Key, that can open magical doors, casting magic spells. If the Fairilu finds the right door, it can mature into a full-fledged fairy.
The doors link to the human world. Fairilus must study and go to school to learn about the world in which they live, while meeting new friends; the anime series focuses on Lip, a newly-born Flower Fairilu, her friends in Little Fairlu. The series follows Lip's overall life in Little Fairilu while making new friends and learning from everything around her, growing up day after day, it tells about the Fairilu friends' adventures in the human world, where they can meet their human partners who support their dreams and are willing to help each other fulfill them. The anime tells about a human girl called Arisu Hanazono, who by chance discovered a magical pendulum and book, summoning Fairilus, she is a girl with many worries, but by meeting the friendly Fairilus and traveling into their homeworld, Little Fairilu, she gets a chance to solve her problems and change herself. Lip Voiced by: Yumiri Hanamori A pink tulip Fairilu, she cries but has a kind heart and does not give up. When she was about to be born from her Fairilu Seed, she couldn't open the Door of Birth but was encouraged by Nozomu.
She eventually born into the world. From on, she always think of him. In season 3, she acts like Spica's younger sister, she is in love with Drop. Himawari Voiced by: Aya Uchida A sunflower Fairilu, she is simple and innocent, yet cheerful and full of energy. She loves the sun, she is popular with everyone. Sumire Voiced by: Rina Hidaka A violet Fairilu, she likes beautiful things that bring a little happiness. She is sensitive, her dream is to be a fashion designer. Rose Voiced by: Aina Kusuda A red rose Fairilu, she sometimes can be a bit clumsy. She is a hard-worker. At first she saw Lip as her rival and tended to be alone, but with Lip's effort, she gets along with others. In season 3, she is good at cosmetic blending, she is in love with Juli. Rin Voiced by: Satomi Satō A gentian Fairilu, she is always sleepy. She was born one year than the other Fairilus of Lip's generation, her Fairilu Seed was picked up and kept by Karen. She, as an unborn Fairilu encouraged Karen, in a hospital, she was born into the world with Karen's encouragement, becomes friends with Lip and others.
In season 3, she likes hoping to create perfumes that can support others' feelings. Olive Voiced by: Atsushi Abe An olive Fairilu. Dante Voiced by: Megumi Toyoguchi A dandelion Fairilu. Suzu and Ran Voiced by: Rina Hidaka A pair of lily of the valley Fairilu twins. Ajisai Voiced by: Misaki Kuno A lavender hydrangea Fairilu. Sakura Voiced by: Hitomi Ōwada A cherry blossom Fairilu. Higan Voiced by: Yusuke Shirai A red spider lily Fairilu. Kasumi Voiced by: Yuto Suzuki A baby's breath Fairilu. Azami Voiced by: Yuka Nishigaki A thistle Fairilu. Dahlia Voiced by: Saki Ogasawara A pink dahlia Fairilu. Jasmine Voiced by: Miho Wataya A jasmine Fairilu. Gerbera Voiced by: Satomi Satō A yellow gerbera Fairilu. Akoya Voiced by: Megumi Toyoguchi A mermaid Fairilu, with her name comes from the Akoya pearl. Sango Voiced by: Chiaki Shimogama A mermaid Fairilu, with her name comes from coral. Wakame Voiced by: Hitomi Ōwada A mermaid Fairilu, with her name comes from seaweed. Fish Voiced by: Atsushi Abe A mermaid Fairilu, with his name comes from fish.
Mesh Voiced by: Yusuke Shirai A mermaid Fairilu. Ruka Voiced by: Aina Kusuda A mermaid Fairilu. Misty Voiced by: Yuka Nishigaki A mermaid Fairilu. Pen Voiced by: Yuto Suzuki A mermaid Fairilu. Kabuto Voiced by: Yui Watanabe A rhinoceros beetle Fairilu. Kuwa Voiced by: Yui Watanabe A stag beetle Fairilu. Akiakane Voiced by: Aya Uchida An autumn darter Fairilu. Miruru Voiced by: Yui Watanabe A honeybee Fairilu. Hotaru Voiced by: Misaki Kuno A firefly Fairilu. Shiro Voiced by: Atsushi Abe A small cabbage white Fairilu. Kamakiri Voiced by: Yusuke Shirai A mantis Fairilu. Spider Voiced by: Chiaki Shimogama A spider Fairilu. Lady Voiced by: Saki Ogasawara A ladybug Fairilu. Shijimi Voiced by: Tomoyo Kurosawa A pale grass blue Fairilu
Devadas Devaprabhakara was an Indian organic chemist and a professor at the department of chemistry of the Indian Institute of Science. He was known for his studies on medium-ring dines, his researches on the reduction and isomerization of them and his synthesis of a number of cyclic hydrocarbons have assisted in rationalizing the understanding of the substrates. He published his researches by way of several peer-reviewed articles, he was an elected fellow of the Indian Academy of Sciences. The Council of Scientific and Industrial Research, the apex agency of the Government of India for scientific research, awarded him the Shanti Swarup Bhatnagar Prize for Science and Technology, one of the highest Indian science awards, in 1976, for his contributions to chemical sciences, he died on 12 January 1978, at the age of 45. Cyclic hydrocarbons Bal Krishan Kaul. "Investigation of temperature dependence of the interaction second virial coefficient using gas–liquid chromatography". J. Chem. Soc. Faraday Trans.
1. 69: 1821–1826. Doi:10.1039/F19736901821