4 May

USS Roosevelt Ends Replenishment-at-Sea

first_imgBack to overview,Home naval-today USS Roosevelt Ends Replenishment-at-Sea Authorities View post tag: Ends Arleigh Burke class guided-missile destroyer USS Roosevelt (DDG 80), successfully completed a replenishment-at-sea (RAS) with the Military Sealift Command USNS Richard E. Byrd (T-AKE 4) the afternoon of July 20. July 23, 2014 The RAS lasted roughly two hours with more than 120,000 gallons of fuel being transferred to Roosevelt. Byrd is one of 12 dry cargo/ammunition ships operated by Military Sealift Command that provide underway replenishment of fuel to U.S. Navy ships at sea. Byrd pulled alongside the Roosevelt to coordinate the transfer of fuel lines from one ship to the other.The RAS began when the two ships were traveling parallel to each other moving at the same speed. Once the ships are at a close enough proximity, Sailors shot a phone and distance line from the receiving ship to Byrd to establish communication and help keep accurate distance between each ship. Once communications were established, the process of transferring the fuel lines began.“Without proper teamwork, the whole evolution could completely come apart,” said Cmdr. Jason Reller, commanding officer of Roosevelt. “It takes the diligence of both ships to ensure a successful RAS.”Once the fuel transfer hoses successfully coupled the ships, the refueling could begin.Roosevelt is deployed as a part of the George H.W. Bush Carrier Strike Group supporting maritime security operations and theater security co-operation efforts in the U.S. 5th fleet area of responsibility.[mappress]Press Release, July 23, 2014; Image: Wikimedia View post tag: News by topic View post tag: Navy View post tag: Replenishmentcenter_img View post tag: americas USS Roosevelt Ends Replenishment-at-Sea View post tag: Defence View post tag: sea Share this article View post tag: USS Roosevelt View post tag: Navallast_img read more

21 Dec

Local Roundup: HSU’s Barker helps Team USA win gold at Maccabiah Games

first_imgArcata >> “Breathtaking” is how Humboldt State third baseman Rachel Barker described her experience in the Maccabiah Games.Barker was recently invited to play in the Maccabiah Games in Israel, a competition sponsored by the Maccabi World Union. According to its website, the Union is “the largest and longest running Jewish sports organization spanning over five continents, more than 60 countries, 450 clubs, and 400,000 members” which “utilizes sports as a means to bring Jewish people of all …last_img read more

19 Dec

Sponge Bobs Upward in Respect

first_imgThe simplest group of multicellular animals, the sponges, is not so simple.  “Researchers have long regarded sponges as the most primitive form of animal life,” wrote Helen Pilcher in Nature;1 “At first glance, sponges seem simple.  They have no gut, no brain, no obvious front or back, left or right.  Adults pump water through a system of canals and cavities to extract food.”  That apparent simplicity belies some pretty advanced technologies possessed by these creatures.  Pilcher mentions several (emphasis added in all quotes):They contain a diversity of cell types; one species contains “at least 11 specialized cell types arranged in a particular pattern.”They contain collar cells with whip-like tails that create currents in the body to ingest food and excrete waste.They produce sperm and egg cells.They have an epithelial layer that provides protection.They make use of a cellular adhesive, integrin, that works with collagen to provide a tether.They communicate with signals that tell developing embryonic cells where to go.  “Like more complex animals,” Pilcher writes, “sponges solve this problem by using specific molecules to guide differentiation and migration as the cells develop in their embryos.”These and other characteristics of sponges suggest to evolutionary biologists that the genetic toolkit for these functions was already present in a putative unicellular ancestor before the first metazoan emerged.  It seems that the unknown ancestor must have already been “a sophisticated creature.”    Later, in Science,2 more marvels about the sponge called Venus Flower Basket were revealed (see 03/01/2004 entry).  Not only does it know how to create high-performance, flexible fiber optic cable at low temperatures; now, says MSNBC News, it is able to “build glass cages that have biologists and materials scientists oohing, ahhing and taking notes for future bio-inspired engineering projects and materials.”  Reporter Daniel B. Kane continues, “These glass cages have at least seven levels of structural organization, many of which follow basic principles of mechanical engineering,” referring to the paper by Aizenberg et al.  who wrote in the abstract, “The ensuing design overcomes the brittleness of its constituent material, glass, and shows outstanding mechanical rigidity and stability.  The mechanical benefits of each of seven identified hierarchical levels and their comparison with common mechanical engineering strategies are discussed.”  Their opening paragraph puts this discovery in context:Nature fascinates scientists and engineers with numerous examples of exceptionally strong building materials.  These materials often show complex hierarchical organization from the nanometer to the macroscopic scale.  Every structural level contributes to the mechanical stability and toughness of the resulting design.  For instance, the subtle interplay between the lattice structure, fibril structure, and cellulose is responsible for the remarkable properties of wood.  In particular, it consists of parallel hollow tubes, the wood cells, which are reinforced by nanometer-thick cellulose fibrils wound helically around the cell to adjust the material as needed.  Deformation occurs by shearing of a matrix rich in hemicelluloses and lignin, “gluing” neighboring fibrils, and allowing a stick-slip movement of the fibrils.  Wood is an example that shows the wide range of mechanical performance achievable by constructing with fibers.  Bone is another example of a hierarchically assembled fibrous material.  Its strength critically depends on the interplay between different structural levels—from the molecular/nanoscale interaction between crystallites of calcium phosphate and an organic framework, through the micrometer-scale assembly of collagen fibrils, to the millimeter-level organization of lamellar bone.  Whereas wood is fully organic material, bone is a composite, with about half organic and half mineral components tightly interconnected at the nanoscale.  However, nature has also evolved almost pure mineral structures, which—despite the inherent brittleness of most minerals—are tough enough to serve as protection for the organism.  In mollusk nacre, for example, the toughening effect is due to well-defined nanolayers of organics at the interfaces between microtablets of calcium carbonate.  In such structures, the stiff components (usually mineral) absorb the bulk of the externally applied loads.  The organic layers, in turn, provide toughness, prevent the spread of the cracks into the interior of the structure, and even confer a remarkable capacity for recovery after deformation.From here, they discuss how the Venus Flower Basket builds its glass house from the bottom up with each level of organization contributing to the high performance of the end product.  Their concluding paragraph seems to contain mixed metaphors: design and evolution—The structural complexity of the glass skeleton in the sponge Euplectella sp. is an example of nature’s ability to improve inherently poor building materials [e.g., glass].  The exceptional mechanical stability of the skeleton arises from the successive hierarchical assembly of the constituent glass from the nanometer to the macroscopic scale.  The resultant structure might be regarded as a textbook example in mechanical engineering, because the seven hierarchical levels in the sponge skeleton represent major fundamental construction strategies such as laminated structures, fiber-reinforced composites, bundled beams, and diagonally reinforced square-grid cells, to name a few.  We conclude that the Euplectella sp. skeletal system is designed to provide structural stability at minimum cost, a common theme in biological systems where critical resources are often limited.  We believe that the study of the structural complexity of unique biological materials and the underlying mechanisms of their synthesis will help us understand how organisms evolved their sophisticated structures for survival and adaptation and ultimately will offer new materials concepts and design solutions.In the same issue of Science,3 John Currey provided details on six of the levels of organization investigated by Aizenberg et al.:Euplectella is a deepwater sponge whose glassy skeleton is a hollow cylinder.  On the first level of structural hierarchy, nanometer-sized particles of silica are arranged around an organic axial filament.  On the second level, alternating layers of silica and organic material form spicules.  On the third level, these small spicules are bundled together to form larger spicules.  On the fourth level, the larger spicules are arranged in a grid, with struts in longitudinal, circumferential, and diagonal directions, resisting all load modes (see the figure).  In the mature animal, these larger spicules are coated with a cementing layer of silica.  On the fifth level, this grid is wrapped into a curved cylinder.  Finally, on the sixth level, helical surface ridges further resist torsion and stiffen the structure. Currey was most intrigued with level four, a “most remarkable feature” with its cross-beams and struts providing load strength and protection from shear.  The MSNBC article contains three photos illustrating the architecture in this “primitive” metazoan.  Aizenberg told the reporter, “It puzzles me.  In my wildest dreams I can’t imagine how these fibers are assembled to make the nearly perfect, highly regular square cells, diagonal supports and surface ridges of the cage.”  Despite the simplicity of the sponge’s anatomy, possessing no brain or nervous system, these structures represent “some of the most complex and diverse skeletal systems known.”1Helen Pilcher, “Back to our roots,” Nature 435, 1022-1023 (23 June 2005) | doi: 10.1038/4351022a.2Aizenberg et al., “Skeleton of Euplectella sp.: Structural Hierarchy from the Nanoscale to the Macroscale,” Science, Vol 309, Issue 5732, 275-278 , 8 July 2005, [DOI: 10.1126/science.1112255]3John D. Currey, “Materials Science: Hierarchies in Biomineral Structures,” Science, Vol 309, Issue 5732, 253-254 , 8 July 2005, [DOI: 10.1126/science.1113954].Wild dreams and imagination are not science; they indicate that Aizenberg is in a philosophical slumber by attributing engineering to evolution.  If evolution produced this sponge’s architecture, as assumed by faith by these investigators, each stage must have contributed to an end result.  Stage four would not help unless the lower stages in the hierarchy were already conferring their benefits; it would be like trying to build struts out of crumbly styrofoam or bits of broken glass.  But end results are prohibited by evolutionary theory which stresses that evolving organisms have no goal in mind.  In the Nature article, Simon Conway Morris extolled Tinker Bell: “Evolution is an extremely dynamic system and paradoxically a very lazy one.  It will co-opt whatever it can.”  Evolutionists preach that laziness and tinkering with available parts produced wonders of engineering that are the envy of materials science.    It’s time to replace Darwin’s tomb in Westminster Abbey with Kepler’s, and change the objective of science from explaining away God back to thinking God’s thoughts after Him.  This will lead to productive inquiry in science.  Notice that the researchers here were oohing and ahhing not over Charlie’s little outworn myth, but over the engineering design apparent in the lowly sponge.(Visited 30 times, 1 visits today)FacebookTwitterPinterestSave分享0last_img read more

18 Dec

Help clean South Africa ‘to honour Madiba’

first_img10 July 2014 The government has called on all South Africans to honour former president Nelson Mandela by actively participating in the Clean South Africa campaign this Mandela Month. The campaign was first mooted by President Jacob Zuma during his State of the Nation Address last month, when he called on South Africans to begin planning for a major clean-up of cities, towns, townships, villages and schools. Speaking to reporters in Pretoria on Thursday following the Cabinet’s latest fortnightly meeting, Communications Minister Faith Muthambi said a Clean South Africa award would be presented to the country’s top three municipalities for Mandela Month. “We all have a responsibility to honour [Mandela’s] life by cleaning, improving and beautifying our communities,” Muthambi said. Celebrated across the globe in honour of the late statesman’s birthday on 18 July, the day gives everyone the opportunity to emulate Mandela’s role as public servant. “Mandela Day is not only about doing good, it is about service,” Nelson Mandela Foundation CEO Sello Hatang said at the launch of this year’s event in April. “It is an opportunity to build upon Mr Mandela’s lifelong belief that we must live to serve every day, in whatever we do.” Mandela Day, Hatang said, creates an opportunity for society’s “haves” and “have nots” to work together to confront social ills within their communities and to build a better world. This year’s Mandela Day will be particularly symbolic in that it offers South Africans, and the world, an occasion to honour the ethos of the late Mr Mandela in the year that marks South Africa’s 20th year of democracy. The idea of Mandela Day was inspired by Mandela at his 90th birthday celebrations in London’s Hyde Park in 2008, when he said: “It is time for new hands to lift the burdens. It is in your hands now.” The United Nations officially declared 18 July as Nelson Mandela International Day in November 2009, recognising Mandela’s “values and his dedication to the service of humanity” and acknowledging his contribution “to the struggle for democracy internationally and the promotion of a culture of peace throughout the world”. The Mandela Day campaign asks that individuals, groups and corporates pledge 67 minutes of their time on 18 July, and every day thereafter, to give back. This can be by supporting a charity or serving the community. No matter how small the action, the aim is to change the world for the better – just as Mandela did. SAnews.gov.za and SAinfo reporterlast_img read more

3 Dec

Why no questions raised on 182-m high Sardar Patel statue, Mayawati asks in SC

first_img She said the years of the Congress regime have seen statues of Jawaharlal Nehru, Indira Gandhi, Rajiv Gandhi and P.V. Naraismha Rao sprout all across the country at the expense of the public exchequer.The affidavit said the 182-metre ‘Statue of Unity’ of Sardar Patel has spurred other state governments to kick off statue projects of their own at public expense. Most of them are meant to shrink the BJP-ruled Gujarat government’s ‘Statue of Unity’.She said the U.P government has already set aside ₹200 crore to acquire land for a “gigantic” 221-metre high Ram statue at the banks of river Sarayu in Ayodhya. The Maharashtra government Shivaji statute project is expected to come up on the Arabian Sea near the Mumbai coast. Likewise, Karnataka government has proposed a 350-feet tall Mother Cauvery statue, Andhra government wants to install a 32-metre tall statue worth ₹155 crore of former chief minister and actor N.T. Rama Rao in Amaravati city and Tamil Nadu government has an idea to construct a statute of Jayalalithaa at Marina Beach for ₹50.08 crore.Violation of Article 14 of the ConstitutionMayawati said the elephant statues do not represent the party symbol of her party. They are ornamental or architectural designs. “Elephants standing in welcome posture is not a new phenomenon,” she said. Elephants were subject matter of welcome arches in ancient times. They also feature as a welcome sign over the Speaker’s chair in the parliament. They are part of the State emblems for Kerala and Karnataka. In fact they feature in ₹10 currency note to the logo of Delhi University. They are seen in the Red Fort and the Ajanta and Ellora Caves to other historic places. “Elephants represent peace, strength and energy.. In Hinduism, elephants are considered sacredband symbolises the deity Lord Ganesha,” she said.The affidavit is in response to February 8 remarks made by the Supreme Court, indicating a “tentative view” that Mayawati would have to cough up and pay back to the public exchequer the money she spent on erecting statues of herself and party symbol ‘elephant’ in public parks across Lucknow and Noida.A Bench led by Chief Justice of India Ranjan Gogoi posted the petition filed by Supreme Court advocate Ravi Kant in 2009 alleging that crores of public money was spent by then Uttar Pradesh Chief Minister Mayawati on these acts of self-aggrandisement.Mr. Kant has alleged that about ₹2,000 crore was used from the state budget for 2008-09 and 2009-10 to ‘falsely glorify’ the then chief minister. The petitioner has said the State government should be directed to remove the statues of Mayawati and her party symbol ‘elephant’ from public land.“The said activity is being carried out as a State policy, which is arbitrary and violative of Article 14 of the Constitution. Sixty statues of elephant were installed at a cost of ₹52.20 crore at public places by utilising state funds,” the petition had alleged in 2009. Mayawati has to repay public money spent on erecting her statues, BSP symbols in parks: SC Bahujan Samajwadi Party (BSP) supremo Mayawati on April 2 countered criticism in the Supreme Court against her statues and elephant sculptures dotting the Uttar Pradesh landscape, asking why no questions are raised either in the court or media about the 182-metre high statue of Sardar Vallabhai Patel in Gujarat, Yogi Adityanath’s proposed 221-m tall Lord Ram or the Chhatrapati Shivaji statue project pegged at a whopping Rs. 3643.78 crore.In an affidavit, Mayawati said her statues are a show of respect by the people for a “contemporary dalit woman leader”.The affidavit provides a personal note in which Mayawati conveys the deep impression which the poverty and backwardness of the backward communities left in her mind. How she decided to “sacrifice her life” for their betterment. “I decided to give up my life to espouse their cause… to dedicate my life for the downtrodden and for this I also took a decision to remain unmarried,” she told the Supreme Court.Politically motivated caseThe statues are a recognition of her noble deeds and welfare measures as Chief Minister, she said. The funds for the memorials, sthals and parks in which her statues find a place were passed by the State legislatures, which are the final authority in such matters of funding. How could she question the legislature which represents the will of the people? The case against her is politically motivated, Mayawati told the court.Mayawati said these memorials and parks dedicated to social reformers and leaders educate the public about them and are also a source of revenue from visitors.”Construction of statues and memorials is not a new phenomenon,” Mayawati pointed out.Also Readlast_img read more

1 Dec

BJP councillor attacks man with sword

first_imgThe Ujjain police on Thursday arrested a Bharatiya Janata Party (BJP) councillor for allegedly attacking a man with a sword. A case under section 307 (attempt to murder) was registered against thim.According to the first information report (FIR) filed by the victim, the councillor, Mangilal Kadel, allegedly attacked him following an altercation in front of the victim’s house, said Sachin K. Atulkar, Ujjain Superintendent of Police. History-sheeterFormer State Cabinet Minister Paras Chandra Jain told The Hindu: “The victim is a history-sheeter and sold illicit alcohol in the area. During the scuffle, the councillor was also injured.” The SP clarified that the other cases registered against the victim in the past had no relation to the current incident.last_img read more

28 Nov

Lease burden and filth deal deadly blow to Talkatora Stadium

first_imgIt was with great festivity that the Talkatora Stadium, a start-of-the-art and environment-friendly stadium, was inaugurated by Chief Minister Sheila Dikshit as a venue for the boxing event scheduled during the 2010 Commonwealth Games (CWG). Two years down the line, the venue is being used for everything with the exception of boxing.An Indian Boxing Federation official told Mail Today that no boxing event has taken place at the venue since the conclusion of the CWG. The ring, where three of the Indian boxers clinched gold medals, is biting the dust in the basement of another building within the premises. In the name of promotion of the sport, a lone Indian Boxing Federation-registered training centre is now functioning on the premises, where 40 trainees come to practice. Other than trials for volleyball, karate and basketball, the venue is used for school functions, political rallies and award ceremonies.The massive second building in the stadium, initially meant to provide accommodation for sportsmen, has been rented out to government agencies in the absence of any clear policy by those in charge – NDMC.However, Raj Kumar Sharma, the stadium manager, says that the stadium is utilised for “15 to 20” days in a month. “On most of the days, the stadium is occupied with sports activities, school functions and political rallies,” he said.Another factor working against the stadium are the unsightly garabage bins around the premise.In spite of rent charges being the lowest for sports activities, most federations can’t afford it. “We can spend money on getting Talkatora only if we get some AIBA-level competition. Otherwise, shelling out so much money for small tournaments are unaffordable,” Sharma added.advertisementlast_img read more