Fish Evolved by Sunbathing

first_img(Visited 6 times, 1 visits today)FacebookTwitterPinterestSave分享0 A new slant on how the first land creatures evolved is found in New Scientist: sunbathing fish received more energy, and this made them better predators.  In all seriousness, James Randerson writes,Our distant fishy ancestors first hauled themselves on to land in order to warm up in the Sun.  So claims a team that says basking would have provided an energy boost that made the fish more agile in the water, improving their chances of snaring prey.  It was also an evolutionary milestone that heralded the rise of all land vertebrates, including us.”Jennifer Clack, Ms. tetrapod evolution (see 08/09/2003 and 07/03/2002 headlines), is apparently a convert to this suggestion.  Presumably the new fad of sun-worshipping started a land rush, and all the fish tried to get the best spots on the beach.  Our ancestors were the ones that remembered to pack the umbrellas and sunscreen.Does anyone need better evidence that Darwinism is not so much a scientific theory as the eternal quest for a good story?  (See 12/22/2003 headline).  The best candidates are those that lend themselves to cartoons by Johnny Hart and Gary Larson.  How the destructive energy of raw sunlight was able to generate lungs and legs and other specialized organs for land habitation is inconsequential, as long as the plot has possibilities for visualization.  Write here with your suggested caption:Roll me over, Melba, I’m done on this side.Charlie Tuna here, out to catch some rays, and shrimp, too.Now you know why they call us sunfish.That’s not skin cancer; it’s an evolving leg.Let’s try another beach; there’s nothing to eat here (see 04/30/2002 headline).The original fish fry.Storm the beach: the marines are looking for a few good men.last_img read more

Bacterial Flagellum Multitasking and Assembly Described

first_img1Evans et al, “An escort mechanism for cycling of export chaperones during flagellum assembly,” Proceedings of the National Academy of Sciences USA, 10.1073/pnas.0605197103, published online before print November 6, 2006.2David DeRosier, “Dispatch: Bacterial Flagellum: Visualizing the Complete Machine In Situ,” Current Biology, Volume 16, Issue 21, 7 November 2006, Pages R928-R930, doi:10.1016/j.cub.2006.09.053.3Y. Magariyama, S. Sugiyama, K. Muramoto, Y. Maekawa, I. Kawagishi, Y. Imae and S. Kudo, “Very fast flagellar rotation,” Nature 371 (1994), p. 752.Finally we found a source corroborating the claim made in the film that some of these flagella can rotate at 100,000 rpm.  Most sources mention much lower (though still impressive) values of around 18,000 rpm.  DeRosier cites a case in the 102,000 rpm range; we will reproduce this source as footnote 3 above for those interested.3    None of the three sources cited in the entry above mention evolution.  We have to keep saying that.  None of them, either, mentioned the fact that it is the intelligent design community that has brought these molecular machines to the attention of the public as examples of biological structures that defy Darwinian explanations.  They’d rather not touch that subject with a ten-foot propeller.    They should, though.  The more young people watching Unlocking the Mystery of Life, the more might become interested in science.  The more scientists interested in these molecular machines, the more funding might become available.  This is another way ID can stimulate scientific research.  What’s Darwin got to do with it?  Nothing but spin doctoring.(Visited 17 times, 1 visits today)FacebookTwitterPinterestSave分享0 Since the bacterial flagellum has become a de facto icon of the intelligent design movement, it’s instructive to see what new discoveries come to light on the molecular machine par excellence.  Two papers appeared recently.Ferry Boats:  A Cambridge team publishing in PNAS1 studied how the parts get to the assembly site.  The studied one of the many flagellum proteins, FliJ:We reveal that the essential export protein FliJ has a novel chaperone escort function in the pathway, specifically recruiting unladen chaperones for the minor filament-class subunits of the filament cap and hook-filament junction substructures….  The data show that FliJ recruits chaperones and transfers them to subunits, and indicate that this is driven by competition for a common binding site.  This escort mechanism provides a means by which free export chaperones can be cycled after subunit release, establishing a new facet of the secretion process.  As FliJ does not escort the chaperone for the major filament subunit, cycling may offer a mechanism for export selectivity and thus promote assembly of the junction and cap substructures required for initiation of flagellin polymerization.Slogan spin:  “Thanks to the new work of Murphy et al., we now have a view of the bacterial flagellum in situ and quick-frozen in time as if a flash bulb had stopped its action.”  David DeRosier wrote this in Current Biology2 in response to the paper mentioned here on 09/01/2006.  DeRosier included two of the stunning new 3D models of the intricacies of the rotor and stator.  Two other sample images can also be found at Caltech E&S (Volume LXIX, Number 3, 2006, p. 6), recently released for publication.    DeRosier’s opening sentences confirm statements made in the film Unlocking the Mystery of Life:The flagellum, with its complexity of structure and multiplicity of function, is a machine that boggles the mind.  While musing on possible phrases that might catch the reader’s attention, I was reminded of the memorable 1926 slogan for the Hoover vacuum cleaner: “It beats as it sweeps as it cleans.”  The flagellum self-assembles as it propels as it responds; that is, the flagellum not only pushes the cell along, it also responds to intracellular signals and it assembles itself.  It seems as amazing as the old Hoover did in its heyday.  But, I thought, the bacterial flagellum does not really ‘beat’; the eukaryotic flagellum, an entirely different machine, does that.  Instead, the prokaryotic flagellum spins, driven by a rotary motor at speeds of over 100,000 rpm in at least one species.  The torque generated by the motor is converted to thrust by the corkscrew-shaped filament or propeller (for a review see [4]).    Of the 40 genes needed to code for a flagellum, at least 24 produce proteins found in the final structure….After describing the wonders of this machine, DeRosier once again found inspiration in commercials: “Let us end with another familiar slogan but this time applied to the tomograms of the flagellum: ‘It’s the real thing.’”last_img read more

South Africa aims for more women in water sector

first_imgMelissa Javan2 September 2015The conversation needed to be changed, according to Nomvula Mokonyane. The water and sanitation minister spoke at a conference in Pretoria on Monday on getting women, who were breadwinners of households, to be providers in national sectors.“How do we inform, incentivise and invest in women-owned businesses and women leaders in water and sanitation,” she asked delegates at the National Women in Water Consultative Conference, where she encouraged them to change the conversation.“How do we change the debate from one of victimisation to one of transformational leadership. We are here to create wealth and prosperity.”Mokonyane spoke of women who walked for more than an hour to fetch water for their households. “An old lady said she was raped along the way. But that will not stop her from fetching water,” she said.More than 200 million hours were spent each day around the world on fetching water. Businesspeople, Mokonyane urged, should not forget people like the women fetching water for their families.“Water is perceived to be a women’s business but the business of water lacks women.” She was planning to shape the Department of Water and Sanitation. “Women should not only fetch water for their households, but they must also be suppliers of pipes and manage reservoirs.”Mokonyane wanted women to be part of the planning, designing and implementation processes of things such as building dams or toilets.New programmeFor this reason, her department had launched the three-year national Women in Water Programme. “The programme comprises a mentorship programme, a women in water business incubator and a women in water forum. The scope of the programme covers all women-owned businesses that are competent and excellent in the provision of services to the department.”It would also focus on women in science and engineering, those in innovation, those in construction, and women in local community initiatives. Other businesses owned by women may be considered based on merit.Mokonyane said the first incubators would be made known in January 2016.Other speakersFemale speakers addressed the conference commission sessions, during which the audience could engage with the speakers and give their input on topics like science and engineering, innovation, construction and local community initiatives.In the construction commission, Dr Thandi Ndlovu, chief executive officer of Motheo Construction Group, said the money the government pumped into infrastructure had been reduced. Despite this, she felt the concern of the country was what would happen to women.The government policy was that at least 30% of its business should go to women-headed companies. Ndlovu said it was important to have a niche for yourself. “Look for the low-hanging fruit. Dams will be built by the grade 9 contractors. Don’t expect to build a dam if it’s not your niche.”She also said the value of partnership was very important in making your business succeed.Khungeka Njobe, the chairperson of South Africa’s Technology Innovation Centre and Aveng Water, said before she had started a business, she asked herself how she could do things differently from what was on the market.She agreed that forming partnerships in business was vital. “Before partnerships, it starts with relationships. Partnerships must be complementary, not just about who you know. We got to know our strengths and skills [before entering a partnership].”She also said that investing should not be postponed. “We’ll keep on saying we do not have the skills. To understand the situation better, investment in things like research should be done.”last_img read more

Innovation award 2018 for intelligent beacons GIL honors Fliegl Counter SX

first_imgShare Facebook Twitter Google + LinkedIn Pinterest The German Society for Computer Science in Agriculture, Forestry and the Food Industry (GIL) has awarded the Fliegl Counter SX with the Innovation Award 2018 during its 38th Annual Meeting in Kiel, thereby honoring an “outstanding, innovative contribution in agricultural computer science”.From the official communication of the GIL: The GIL e.V. awards the prize to the joint submission of the companies Fliegl Agrartechnik GmbH, Pöttinger Landtechnik GmbH and Sigfox for the development of the Beacon + GPS + Sigfox (Fliegl COUNTER SX, Pöttinger PÖTPRO Guide), submitted by Franz Höpfinger (Fliegl Agrartechnik GmbH).The Fliegl COUNTER SX is an innovative beacon that extends the beacon technology to include an acceleration sensor, GPS module, Sigfox wireless technology and data memory. The features are intelligently interlinked and together they provide a new application range and data depth: The Fliegl COUNTER SX can usefully generate, store and transfer data in a variety of different processes. The beacon opens up completely new fields of application, not only in agriculture and livestock farming.The Fliegl COUNTER SX proves that beacons can do more than just count operating hours. Mounted on a machine, it recognizes when and what kind of work is being done — all by itself. The beacon can store and document this information, not only with time but also with location data and make it available in real time or subsequently via Sigfox or smart app. It intelligently generates data and makes it available directly where it is needed for documentation purposes and for further data processing.The Fliegl COUNTER SX is universally applicable – the beacon is not limited to specific processes in agriculture and not even to the application in agriculture itself. It is also suitable for applications such as the tracking of containers or truck trailers, machinery and parts. For enterprises operating in both, logistics and machinery contracting, the Fliegl Beacon technology fits in both worlds. But also in the areas of theft protection, gate monitoring, weather station, temperature or silo monitoring, the application possibilities are manifold. The Fliegl COUNTER SX is small, however, the possibilities it offers as part of the internet and as a basis for smart farming are great.The German Society for Computer Science in Agriculture, Forestry and the Food Industry (GIL) is a scientific society for the promotion of agricultural computer science. The GIL sees itself as a forum for the interdisciplinary exchange of information between various traditional subject areas with an interest in topics of applied computer science and information management. The events and publications of the GIL serve to gain knowledge and disseminate it. The service is aimed at students, teachers, users, experts and decision-makers in research, teaching, economy, administration and politics. The annual meetings of the GIL serve as an information exchange and discussion forum for contributions from the entire specialist field. At each conference, a selected topic will be discussed more intensively. In 2018, the headline is “Digital Marketplaces and Platforms.”last_img read more

Wife, paramour held for man’s murder in Ganjam

first_imgThe Ganjam police has solved the murder of a man whose body parts were recovered from different areas with the arrest of his wife and her lover on Saturday.According to the police, Rina Sahu (35), wife of Koko Sahu (40), had committed the murder with with help of her paramour Sunil Pradhan on March 31. One of their sons was the witness to the murder, police sources said. Sunil is a distant relative of Rina.A torso was recovered near Mardarajpur on April 2. During the next few days, chopped hands and legs were located from nearby areas. On April 10, a severed head was found near the Dengapadar canal. As there was no missing person complaint, the local police were unable to identify the victim. The victim was finally identified when his brother Golak Sahu filed a complaint with the police regarding his missing brother. The police had taken Rina into custody on May 10 for interrogation. During interrogation, she spilled the tbeans about the gruesome murder, which led to the arrest of her paramour.Illicit relationshipAccording to Sub-Divisional Police Officer (SDPO) Dilip Das, who monitored investigation of the case, Rina had developed relationship with Sunil as her husband was a migrant worker in Surat. After returning home in March, her husband had come to know about their illicit relationship and warned them to refrain from it. It had irked Rina and Sunil, who had decided to murder Koko.Another caseEarlier this month a similar case had come to fore in Ganjam district. Decomposed body of Laxmi Narayan Patra (38) from Mohana of Gajapati district was recovered from a locked rented house at Ankushpur village on May 4. Investigation revealed that he had been murdered on April 7 by his wife Jamuna Patra and her paramour Narayan Sahu. Both of them have been arrested.last_img read more

Manganiyar singer thrashed to death in Rajasthan village; families flee homes

first_imgAbout 20 families belonging to the Manganiyar community of folk musicians have fled their native village in Jaisalmer district of Rajasthan after a community member was allegedly beaten to death following a dispute over a ritual in a local temple. The folk singer was held responsible for failure of a temple ritual.A faith healer, Ramesh Suthar, who belongs to the ‘Bhopa’ (exorcist) clan, had claimed that Amad Khan (45) had failed to perform a specific melody at the temple in Dantal village during the Navratra festival, because of which the spirit of the temple goddess did not enter his body. He allegedly thrashed the singer and broke his musical instruments.Suthar allegedly entered the house of Khan, along with some accomplices on September 27 night and assaulted him again, leading to his death. Police have arrested Suthar and launched a hunt for two other accused after registering a murder case under Section 302 of Indian Penal Code.The frightened Manganiyar families have fled Dantal village and about 200 persons are camping at Balad, 20 km away, under the police protection. Some of them shifted to the Jaisalmer town earlier this week and are staying at a night shelter near the railway station.Though the police have assured them of security if they return to their native village, Manganiyars claim that they were being threatened by the dominant Rajput and Suthar castes. Gunasar Lok Sangeet Sansthan president Baksh Khan said the Manganiyars expected the district administration to help in their rehabilitation.last_img read more

Pingris wants to see more from Acox amid subpar showing in semis

first_img“As an import, I’m not satisfied,” Pingris said in Filipino after Star suffered a 98-74 beatdown in Game 2 Tuesday night.Acox is known for his rebounding and that’s also the primary reason why Star opted to replace the prolific scorer Malcolm Hill.FEATURED STORIESSPORTSWATCH: Drones light up sky in final leg of SEA Games torch runSPORTSSEA Games: Philippines picks up 1st win in men’s water poloSPORTSMalditas save PH from shutoutHe is posting 14 boards a game in the semis. But with the situation that his team is in, he needs to do more than that if the Hotshots would keep their season alive in Game 3 on Thursday.On the other hand, Allen Durham is playing like the reigning Best Import and is showing why he’s tipped to win the award again. Stalzer returns to PSL, jumps ship from Foton to Petron BSP sees higher prices in November, but expects stronger peso, low rice costs to put up fight Brace for potentially devastating typhoon approaching PH – NDRRMC Fire hits houses in Mandaluyong City MOST READ LOOK: Loisa Andalio, Ronnie Alonte unwind in Amanpulo for 3rd anniversary Read Next PBA IMAGESVeteran Star forward Marc Pingris wants to see more production from import Kris Acox, who has been subpar in the Hotshots’ semifinals series against the Meralco Bolts.Through two games, Acox only has had little to show on offense, averaging just 8 points on 35% shooting from the field.ADVERTISEMENT Fire hits houses in Mandaluyong City Nonong Araneta re-elected as PFF president Frontrow holds fun run to raise funds for young cancer patients  “It’s going to be hard [to win in Game 3] but we’re going to try. It’s really going to be tough.” Durham has been nothing short but menacing, averaging 22 points, 24 rebounds and 4.5 assists in the semis.But the Hotshots’ woes aren’t just due to Acox’s poor play.Pingris said the locals should also step up.In Game 2, Star only had two players in double-digit scoring with Mark Barroca tallying 16 points. The other was Mon Abundo, the third-string point guard, who got extended playing time with Paul Lee nursing a left knee injury.“We also need to help him (Acox). It shouldn’t be just all him. The locals also need to help out,” said Pingris, who also has his fair share of struggles in the series, averaging 4.5 points and 5.5 rebounds.ADVERTISEMENT Typhoon Kammuri accelerates, gains strength en route to PH Trending Articles PLAY LIST 00:50Trending Articles00:50Trending Articles00:50Trending Articles01:37Protesters burn down Iran consulate in Najaf01:47Panelo casts doubts on Robredo’s drug war ‘discoveries’01:29Police teams find crossbows, bows in HK university01:35Panelo suggests discounted SEA Games tickets for students02:49Robredo: True leaders perform well despite having ‘uninspiring’ boss02:42PH underwater hockey team aims to make waves in SEA Games Don’t miss out on the latest news and information. LATEST STORIES View commentslast_img read more