VANCOUVER, British Columbia — It only took Joe Pavelski half-a-period to do what he does best: score goals.The Sharks captain netted his 38th of the season just 10:47 into his first game since March 16, burying a blocked shot that bounced out to him on the doorstep. Despite a seven-game absence to recover from a lower-body injury, Pavelski led all Sharks forwards in shots (6) and attempts (9) while logging 16:45 of ice time.Unfortunately for the Sharks, Pavelski’s return wasn’t enough to stop …
If comets repeatedly break up and re-coagulate, how long could that recur?A new paper in Nature from the Rosetta team suggests a strange new theory about comets. Their Comet 67P has two prominent lobes, like a dumbbell, but it’s not unique. Four other comet nuclei also have a bilobed appearance. This suggests a new theory of how they got that way:Here, we study the structure and dynamics of 67P’s nucleus. We find that sublimation torques have caused the nucleus to spin up in the past to form the large cracks observed on its neck. However, the chaotic evolution of its spin state has so far forestalled its splitting, although it should eventually reach a rapid enough spin rate to do so. Once this occurs, the separated components will be unable to escape each other; they will orbit each other for a time, ultimately undergoing a low-speed merger that will result in a new bilobate configuration. The components of four other imaged bilobate nuclei have volume ratios that are consistent with a similar reconfiguration cycle, pointing to such cycles as a fundamental process in the evolution of short-period comet nuclei. It has been shown that comets were not strong contributors to the so-called late heavy bombardment about 4 billion years ago. The reconfiguration process suggested here would preferentially decimate comet nuclei during migration to the inner solar system, perhaps explaining this lack of a substantial cometary flux.It’s a destructive process, in other words. How long could that go on?This is grist for someone’s research mill – someone open to the idea that billions of years are neither necessary nor empirically tenable. (Visited 21 times, 1 visits today)FacebookTwitterPinterestSave分享0
Share Facebook Twitter Google + LinkedIn Pinterest By Peter Thomison, Ohio State University ExtensionRecent heavy rains have caused widespread flooding and ponding, especially in river bottoms and along streams. In some localized areas, this may have resulted in partial and complete immersion of corn in nearby fields, especially in low spots. When water drains off these fields, plants may be covered to varying degrees with a layer of mud. Will corn plants covered by a layer of mud survive and can it perform normally? The layers of silty mud covering plants will limit or prevent leaf photosynthesis. Bacteria deposited in leaf whorls by flooding can result in disease and kill plants.On the positive side, most corn in Ohio was at a stage of growth less vulnerable to flood damage when it occurred. Most corn is well beyond V6 (the six leaf collar stage) when the growing point is at or above the soil surface and less sensitive to flooding and associated anaerobic soil conditions. If the duration of flooding was brief, limited to several hours, and temperatures are moderate (which they are supposed to be the remainder of the week), flooding injury damage should be minimal. If corn was subjected to flooding at mid-vegetative stages of development, most leaves on affected plants should not be severely impacted by the mud coatings (assuming that mud in the whorl does not inhibit normal emergence of subsequent leaves). Corn plants produce up to 21 leaves, so at V10, about half the corn leaves have yet to emerge from the whorl. The leaves that have yet to emerge are the most important for the corn plant because the upper canopy produces most of the corn plant’s yield potential.According to the National Crop Insurance Service’s defoliation charts, complete leaf loss at about V10 results in 28% yield loss. However, it’s unlikely that the photosynthetic capacity of leaves has been completely destroyed in plants covered with mud. What’s needed now? More rain (without flooding) to wash silt off leaves allowing for resumption of photosynthesis. It will also help wash mud out of leaf whorls allowing new leaves to emerge.
Lacson: SEA Games fund put in foundation like ‘Napoles case’ For the complete collegiate sports coverage including scores, schedules and stories, visit Inquirer Varsity. “It always gives you satisfaction when you win, especially since it’s our first of the season, and my first one as the coach,” said FEU coach Olsen Racela. “But we’re still far from what we want to be. We still have a lot of things to do and take care of.”Arespacochaga, meanwhile, downplayed the back-to-back 20-point victories to start the season, saying the Eagles still have their work cut out for them if they want to reach the finals again.“Our mentality and philosophy is ‘next game’ and it might have been a 20-point win for us, but we want to keep on improving,” he said. “We don’t want to look at that 20-point win and get big-headed. It doesn’t show how hard we had to fight, especially defensively against all their (UP’s) good guards.” Ateneo guard Tyler Tio wasted little time showing the skills that made him a blue-chip recruit a year ago, while the rest of the Blue Eagles once again stamped their class against another contender.ADVERTISEMENT MOST READ Trump signs bills in support of Hong Kong protesters The Eagles extended a 44-36 halftime lead to 11 points in the third period, before enjoying a 24-point buffer late in the game as Tio, who missed the opening-day win over Adamson due to an ankle injury, caught fire with 10 of his output in the final period.“We’re just happy for Tyler because he’s been working hard since last season,” said Ravena. “We always knew he can contribute.”“I was just doing my job for the team,” said Tio, a standout from Xavier High School, who initially only had Canadian citizenship before applying for a Philippine passport last year.Three days after hitting the triple that lifted the Maroons to a 74-73 win over University of Santo Tomas, Paul Desiderio was held to just nine points on 4-of-18 shooting as he struggled to find his rhythm. But rookie Juan Gomez De Liano got going early and finished with 16 points for the Maroons, who fell to a tie with Far Eastern U at 1-1.The Tamaraws turned back University of the East, 90-83, earlier after another strong game from Ron Dennison, who had 16 points. Prince Orizu also finished with a double-double of 15 points and 16 rebounds aside from anchoring FEU’s interior defense.ADVERTISEMENT Bombers try to keep distance vs Knights Ethel Booba on hotel’s clarification that ‘kikiam’ is ‘chicken sausage’: ‘Kung di pa pansinin, baka isipin nila ok lang’ Robredo should’ve resigned as drug czar after lack of trust issue – Panelo NATO’s aging eye in the sky to get a last overhaul LATEST STORIES With Tio delivering one of the finest debuts in recent memory, the Eagles rolled past the University of the Philippines Fighting Maroons, 92-71, last Wednesday to grab the early lead in the UAAP Season 80 basketball tournament at Smart Araneta Coliseum.Tio, who sat out last season after he was unable to get a Philippine passport in time for the tournament, finished with 14 points in just 11 minutes, going 6-for-6 from the field as the Eagles brandished the depth of their squad to seize the early lead in the tournament.FEATURED STORIESSPORTSSEA Games: Biñan football stadium stands out in preparedness, completionSPORTSPrivate companies step in to help SEA Games hostingSPORTSBoxers Pacquiao, Petecio torchbearers for SEA Games openingThirdy Ravena once again led the Eagles with 16 points and six rebounds, while Chiz Ike followed up his strong opening-day performance with a nine-point, seven-rebound haul for the Eagles. Aaron Black also had a solid game of nine points and 10 boards.“Hats off to the guys who stepped up for us,” said Ateneo assistant coach Sandy Arespacochaga. “One of the things that coach Tab (Baldwin) said at halftime was we needed to play better defense and take care of the ball and we saw some improvement in the second half.” Robredo: True leaders perform well despite having ‘uninspiring’ boss PLAY LIST 02:49Robredo: True leaders perform well despite having ‘uninspiring’ boss02:42PH underwater hockey team aims to make waves in SEA Games01:44Philippines marks anniversary of massacre with calls for justice01:19Fire erupts in Barangay Tatalon in Quezon City01:07Trump talks impeachment while meeting NCAA athletes02:49World-class track facilities installed at NCC for SEA Games Celebrity chef Gary Rhodes dies at 59 with wife by his side Celebrity chef Gary Rhodes dies at 59 with wife by his side Hotel says PH coach apologized for ‘kikiam for breakfast’ claim Don’t miss out on the latest news and information. Sports Related Videospowered by AdSparcRead Next View comments