This Bug Is Whiter than White, Brighter than Bright

first_imgDetergent manufacturers should get a load of this beetle.  Cyphochilus, a resident of southeast Asia, is clothed in one of the brightest white surfaces (per unit thickness) known.  British scientists reporting in Science1  were intrigued how the bug accomplishes this shining performance.  Most bright-white surfaces, such as paint and paper, need a hundred times the thickness to achieve such brilliance.    Some insects and birds are able to intensify particular colors using photonic crystals, which are regularly-spaced pits or shapes on scales or wings (see 01/29/2003, 10/13/2003).  The microscopic geometric patterns serve to add up particular wavelengths and cancel others.  White light, though, requires a high degree of scattering across the spectrum.  The scientists found that the 5-micron thick scales of Cyphochilus contain “a random network of interconnecting cuticular filaments with diameters of about 250 nm.”    Imitating this trick may lead to several applications.  Brighter paints and paper could be in our beetle-inspired future, and maybe even whiter teeth.  See also the articles on Live Science, BBC News and University of Exeter.1Pete Vukusic, Benny Hallam, and Joe Noyes, “Brilliant Whiteness in Ultrathin Beetle Scales,” Science, 19 January 2007: Vol. 315. no. 5810, p. 348, DOI: 10.1126/science.1134666.Good science can discover, understand, and imitate the natural world without any need for evolutionary storytelling.  That’s another reason why biomimetics can provide a nonsectarian, nonphilosophical escape hatch for disillusioned Darwinists.  The authors did not need to mention evolution.  Intelligent design was not mentioned either, but was implicit.(Visited 71 times, 1 visits today)FacebookTwitterPinterestSave分享0last_img read more

Get no-till corn off to a great start: Tips from CTTC

first_imgShare Facebook Twitter Google + LinkedIn Pinterest Ohio has a long history of university no-till plots, but so does Nebraska. And, while Nebraska has not been no-tilling for as long as Ohio, the state does have one man that has been there for all of the 37 years of no-till plot research — agricultural engineer Paul Jasa with the University of Nebraska-Lincoln.Jasa brought his tremendous amount of no-till experience to the popular Conservation Tillage and Technology Conference in Ada yesterday. Today is the second day of the conference.“We have done some dumb things with tillage in the past. Mother Nature has roots living in the soil year round, but our ancestors started tilling and have roots growing only five or six months a year,” Jasa said. “We created a plow pan five or six inches deep. Then we broke up that plow pan at five or six inches with a chisel plow and after a few years we created a chisel pan down at 12 inches. Then we started sub-soiling. We lowered our plow pan from eight to 12 to 20 inches deep without thinking about the soil. We try to fix the dumb things we have done by doing something else and often times that other thing is just as dumb. Let’s stop that and part with tillage tools and go with no-till to get the system to start working with you. We need everything to start working together.”With a no-till system in place, a diverse crop rotation and the use of cover crops, water infiltration, soil structure, soil temperatures, and soil biology all can move in a positive direction, Jasa said. But to maximize yields through a no-till system, consistency is crucial and that starts with planting.For no-till, planters need to accomplish four steps:Cut and handle residue,Penetrate the soil to the desired seeding depth,Establish proper seed-to-soil contact,Close the seed-v.“Keeping these four items in mind, producers can evaluate the strengths or weaknesses of their planter and make any adjustments or changes necessary to make no-till successful,” Jasa said. “Fortunately, most planters can be used for no-till with few, if any, modifications.” Here is more from Jasa in an interview with Dale Minyo.Dale Minyo with Paul Jasa at CTTC 2017Jasa compiled the following tips for ideal no-till planting. Maintain sharp openersDouble-disk openers, if sharp and properly maintained, can cut through residue without coulters or residue movers. Adjust the disk openers so they work together as a single cutting edge with about two inches of blade contact on the standard disks or about 1.5 inches on the heavy-duty, thicker disks. (Staggered disks should be adjusted to just touch.) When replacing the disk openers, also replace the seed tube protector as it holds the disks apart to reduce blade flexing and acts as a scraper to help keep the disks clean. If hair pinning residue is a problem, increase the planting depth some to improve the residue cutting angle of the disks. Don’t seed between the old rowsBy planting down the old rows, the seeds will be placed in the most biologically active area of the field. The decaying roots from last year leave channels in the soil for the new roots to grow in. Avoid planting in the heart of the wheel track from last year as that is the most compacted area in the field. Planting about 4 inches to the side of the old row works well for corn on corn where uniform depth control is critical. This also reduces tire wear compared to driving on the root stumps to plant between the old rows. Watch planting speedKeep the speed around five miles per hour to reduce planter unit bounce and deliver the seeds uniformly. Be wary of ads that say a planter can “meter seed” at seven to eight mph. That doesn’t mean it can deliver the seeds to the soil uniformly at higher speeds, especially on rough fields. Often the resulting non-uniformity from operating at higher speeds reduces yields enough to justify a larger planter (or a second planter) to complete planting in a timely manner. Increase the down pressureThe residue of no-till, especially in hard, dry soil, requires down pressure springs and extra weight (as necessary) on the planter to cut through and penetrate the soil to achieve desired seeding depth. Enough down pressure should be on the row units to make sure that the depth gauging wheels are actually gauging planting depth. Check the down pressure on the row units as conditions change to avoid over-compacting wet soils, creating sidewall compaction.Place seeds at a uniform depth. Make sure all the seeds are placed at the bottom of the seed-v into good soil moisture for uniform emergence. Keeton Seed Firmers or Schaffert Rebounders are recommended for a more uniform planting depth for more uniform emergence. These units also provide convenient in-furrow fertilizer application options. The Keeton Seed Firmers also improve seed-to-soil contact as the name implies. Keep residue uniformConsider residue movers on the planter to “even up” and create a uniform residue layer, especially if the residue was not uniformly spread during harvest or some residue was drifted by the wind. However, if the residue cover is already uniform, such as in long-term no-till, residue movers can do more harm than good. In these cases, the movers break residue loose from the soil and some of the residue can then blow back over the row, creating non-uniform conditions. In addition, some of the emerging corn may leaf out under the residue and have difficulty surviving. Close the seed-vThe seed-v should be properly closed for good seed-to-soil contact and to reduce drying out of the seed zone. Spoked closing wheels are often added to planters to help close the seed-v. They serve three purposes:Drying the soil with tillage,Closing the seed-v while fracturing the sidewall, andProviding loose soil above the seed.The loose soil created by the spoked wheels reduces the chances of the seed-v opening back up as the soil dries, especially on wet clay soils. However, depending on the moisture situation, the tillage of the closing wheels might dry out the soil too much. In some cases, growers get better results using one spoked wheel and one regular closing wheel. Also, some closing wheel brands have less aggressive spokes than others and some provide some soil firming to reduce drying. Level the planterThe planter should be level to slightly tail down in back, with the toolbar at the proper height so that the parallel links run parallel to the soil surface. If the planter runs nose down, the openers will tend to bulldoze and may plug with residue. When operated tail down, the cutting edge on the double disk openers is in a better position to cut residue on the soil surface. Also, as the planter runs nose down, the tail assembly of the closing wheels doesn’t run level. As the pivot point of the closing wheel arm gets lower (either by leveling the planter tail down or by planting deeper), the angled closing wheels have more of a pinching action and they will do a better job of closing the seed-v. Consider planting deeperPlanting the seeds deeper puts them into a more buffered soil environment with a more uniform soil temperature and soil moisture. This improves uniformity of emergence, which increases yields. Also, by planting deeper, the root system is better established, improving standability and allowing the plant to better handle stresses. Corn should be planted at least two inches deep as most corn planters were designed for planting depths of two to three inches. Consider the three-inch planting depth in dry years and low residue conditions to reduce the chances of the seed zone drying out.last_img read more

Lift & Extract in Premiere Pro: Moving Clips

first_imgThe useful thing about this is the exact portion you wanted from the original ‘camera sequence’ is now on your clipboard and ready for you to paste it into your main sequence.At this point you may get a little worried that while it will paste in, it will overwrite whatever is present in your master sequence.  You may feel the need to do an INSERT edit rather than an OVERWRITE edit.Instead of just doing the normal shortcut for paste (on a Mac it’s Command and V, on a PC it’s Control and V), simply add a SHIFT to the combination and you will end up with an insert edit of the clips you lifted or extracted from your camera sequence.  This will push the existing footage down the timeline to make room for the copied clips.SHIFT + CNT/CMD + V = Insert Edit of All Clips From the ClipboardUse Lift & Extract in Premiere Pro to move portions of the clips you want into a new timeline with ease. Getting the right portions of selected clips from one sequence to another is simple in Premiere Pro using the ‘Lift’ & ‘Extract’ options.  Here’s how to use this timesaving tool.Sometimes it’s useful to seperate cameras into sequences of their own to simply the editing process.  You may want to put all the media clips from one camera end-to-end in a single sequence and call it “Camera 1”.  Of course, this may result in multiple sequences each representing different cameras.The question then is how to grab footage from each of these sequences and bring them into a master sequence for the main edit.  You could select clips and cut/paste them into the master sequence, but more often than not you don’t want whole clips.  Instead, what you need is select portions of clips.You could nest each of these sequences into the main sequence, but this is a very difficult way of working and not recommended.This is where the “Lift and Extract” option comes into play in Premiere Pro.  In this post, we’ll take a look at how to use Lift and Extract, a quick way of moving portions of clips around from one sequence to another.  Before we start, it’s worth noting that some people don’t like to have a work area bar and a time ruler in the sequence/timeline window and just like to work with IN and OUT points. Did you know you can turn both of them off in Premiere Pro CS6? Just go to the panel menu and un-check these options.Options to Un-Check to De-Clutter TimelineThe end result is that your timeline looks like this (you don’t have to do it, but it certainly leads to a cleaner looking timeline):After Un-Checking OptionsNow, it’s just a case of going through your footage with the sequence selected and choosing IN (shortcut is i) and OUT (shortcut is o) points in the TIMELINE of the ‘camera’ sequences.  This can include as much or as little of the clips as you’d like, and doesn’t have to be complete clips.IN and OUT Point Selected In The TimelineIn Premiere Pro, the ‘Lift’ & ‘Extract’ buttons are found here in the Program Monitor:LIFT & EXTRACT Buttons in the Program MonitorLIFT (keyboard shortcut is ; ) will copy the clip to your clipboard and remove the selected portion from the timeline, leaving a hole in the timeline shown below:LIFTWhereas EXTRACT (keyboard shortcut is #) will copy the clip to your clipboard, remove the selected portion from the timeline AND close up the resulting hole as shown below:EXTRACT (with gap closed)last_img read more

Schoolteacher arrested for molesting six-year-old

first_imgA six-year-old student was allegedly molested by a teacher at a government-aided girls’ school in south Kolkata. The incident led to a major protest by parents of students outside the school on Tuesday. The protesters threw stones at the police team which reached the spot for investigation, forcing the police to resort to baton charge to disperse them. The accused teacher was arrested and four persons were taken into custody for throwing stones at the police. The school authorities could not be reached for comments.Two separate casesJoint Commissioner of Kolkata Police (Headquarters) Supratim Sarkar said two separate cases were lodged regarding the alleged molestation and assault on police. “We have lodged a case against the accused teacher under Sections 323 (voluntarily causing hurt), 354 (assault or criminal force to woman with intent to outrage her modesty) and the Protection of Children from Sexual Offences Act,” he said.A brawl broke out in front of the school between the police and the guardians when the latter tried to break open the school gate. Both sides allegedly traded blows and a section of the protesters tried to pull off the helmets of the police personnel who retaliated with baton charge. Several guardians and police personnel were injured in the clash. “Eight police personnel, including two officers incharge, were injured,” said Mr. Sarkar. He denied allegations that there was not adequate deployment of women police personnel to deal with the situation.A section of guardians eventually broke open the main gate of the school and ransacked several rooms inside the premises. They also allegedly heckled other teachers when they tried to leave the premises. The situation was such that some of the teachers had to be taken out of the area in police vehicles.West Bengal Commission for Protection of Child Rights chairperson said that the commission will monitor the probe and seek the CCTV footages of the school from the police if required.last_img read more

Sharad Pawar drops plan to visit ED office over cooperative bank scam case

first_imgTwo days after announcing that he would be voluntarily visiting the Enforcement Directorate’s office in Mumbai to clear the air about a purported cooperative bank scam in which he has been named, Nationalist Congress Party chief Sharad Pawar on Friday cancelled his visit. “I was informed by the ED that I am not required to come… and in order to maintain law and order in the city, I have decided not to go to the ED office,” Mr. Pawar said outside his residence in Mumbai. Mumbai Police Commissioner Sanjay Barve visited Mr. Pawar earlier in the day requested him not to visit the ED office as it may create a law and order situation. “I had been Home Minister in the past and do not want to disturb peace in the city and affect daily lives of people,” Mr. Pawar added.Mr. Pawar thanked his party workers, ally Congress and its leaders Manmohan Singh and Rahul Gandhi for their support. Mr. Pawar also thanked Shiv Sena leader Sanjay Raut, who had spoken in favour of him. “I will be going to Pune, Baramati and Purandar areas, which was affected by floods and will monitor rescue work,” Mr. Pawar said. Mr. Pawar’s decision would have given relief to the Mumbai Police, which had increased the security near Mulund since morning.The workers of NCP and Congress were starting to gather outside ED office and Mr. Pawar’s residence since morning.last_img read more

With Mary Ann Mendrez out, UE seniors get time together on the floor

first_imgCayetano: Senate, Drilon to be blamed for SEA Games mess Jasmine Alcayde, who rode the bench for most of the season, took Mendrez’ spot in the starting six joining other graduating players Judith Abil, Lai Bendong, Roselle Baliton, and Kath Arado,“Ate Jas got to be in the starting six since this is her last playing year,” said Mendrez. “I think it’s also a good thing so those who will graduate got to play at the same time.”Sports Related Videospowered by AdSparcRead Next SEA Games hosting troubles anger Duterte MANILA, Philippines—With the season winding out, star hitter Mary Ann Mendrez had to sit out University of the East’s second to the last game in the UAAP Season 81 on Wednesday.ADVERTISEMENT Magalong: Albayalde also got SUV out of ‘agaw bato’ operation in 2013 PLAY LIST 01:19Magalong: Albayalde also got SUV out of ‘agaw bato’ operation in 201300:50Trending Articles00:50Trending Articles02:42PH 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 Games02:11Trump awards medals to Jon Voight, Alison Krauss LATEST STORIES View comments Duterte wants probe of SEA Games mess Private companies step in to help SEA Games hosting Magnolia closer to PBA finals return, overcomes Rain or Shine in Game 5 Philippine Arena Interchange inaugurated Hontiveros presses for security audit of national power grid Mendrez, UE’s second-leading scorer in the tournament with 13.3 points per game, was suffering from tonsilitis, which got worse over the Holy week break.Without her output, the Lady Warriors absorbed a 25-17, 25-16, 25-19 loss to defending champion La Salle whcih sent them to a 3-10 record.FEATURED STORIESSPORTSPrivate companies step in to help SEA Games hostingSPORTSPalace wants Cayetano’s PHISGOC Foundation probed over corruption chargesSPORTSSingapore latest to raise issue on SEA Games food, logistics“When I got back in Manila, things got worse and that was when I got fever and tonsillitis,” said Mendrez in Filipino. “Coach [Karl Dimaculangan] didn’t let me train since Monday, although on Sunday I joined the practice but I didn’t finish it.”Mendrez, though, saw her illness as a blessing in disguise as her graduating teammates got a chance to be on the floor at the same time. Panelo: Duterte ‘angry’ with SEA Games hosting hassles MOST READ Don’t miss out on the latest news and information. DA eyes importing ‘galunggong’ anewlast_img read more