Here’s news about wonders in the human body you may not know about.Body fireworks: Given that tonight fireworks will light up the skies around America for Independence Day, Live Science posted a timely and interesting infographic called “Fireworks and You.” It shows how the same elements that add color and sparkle to explosive light shows—potassium, calcium, lithium, copper and iron—perform numerous vital functions in our bodies. Most of the body is composed of just 4 elements: in decreasing abundance, they are oxygen, carbon, hydrogen and nitrogen. The others make up just 4%, but “without them, life would be impossible.” Maybe we should serenade these vital minerals with a passionate rendition of “You light up my life.”Polarized society: Here’s an amazing trick humans share with cuttlefish: the ability to detect polarized light. Science Daily shares this little-known secret:Animals, like bees and ants, use polarization patterns in the sky as a navigation aid. But few, even in the scientific community, are aware that humans can perceive the polarization of light with the naked eye too. We do so using ‘Haidinger’s brushes’, a subtle visual effect, which appears like a yellow bow tie at right angles to the polarization angle.The article explains how you can test this with your own eyes on the computer screen or outdoors: stare at a white screen or the sky and tilt your head back and forth. Look for the bow-tie-shaped “brushes” in your field of view that vanish rather quickly. That effect is due to polarization of the light source. (Some people are better at sensing this than others are.)Bladder protection: The lining of your bladder avoids infections by capturing germs in tiny balloons called vesicles, and sending them out with the urine. Read about how this works in Science Magazine. “This response is analogous to having indigestion and vomiting to rid the stomach of harmful substances,” Science Daily says. It sounds gross, but it’s less gross than a bladder infection; be glad it usually works.Immune discovery: A textbook-changing find was announced by Medical Xpress:In a stunning discovery that overturns decades of textbook teaching, researchers at the University of Virginia School of Medicine have determined that the brain is directly connected to the immune system by vessels previously thought not to exist. That such vessels could have escaped detection when the lymphatic system has been so thoroughly mapped throughout the body is surprising on its own, but the true significance of the discovery lies in the effects it could have on the study and treatment of neurological diseases ranging from autism to Alzheimer’s disease to multiple sclerosis.Nature’s lubricant: Your joints are well-greased by a substance called lubricin. How well does it work in normal joints? Medical Xpress lavishes on how it makes your body a “well-oiled machine” (and the word “machine” is used on purpose, since “in many ways it is not far from the truth”)—Chances are, you have not given much thought to your body’s lubrication. And in many ways, this is testament to just how effective it is at protecting against damage and wear. One reason that the sliding surfaces of the body are so resilient is because of a little known protein called lubricin which is nature’s most effective “grease”.This protein is not like artificial grease. It has feet!These adhesive feet attach themselves to virtually any surface, forming a loop in the central non-adhesive string. As more and more lubricin attaches to a surface, it self-assembles to form a dense, carpet-like layer of lubricating loops. This layer is known as a “polymer brush“, and it cushions surfaces where they contact, reducing friction as they slide.Noseprint: You may have a “smell fingerprint” unique to your nose, Science Daily reports. It’s hard to prove that any two individuals experience the same sensation with particular odors, but scientists can map the distribution of odorant receptors. What’s most interesting is the design of the olfactory system as stated in the first sentence: “Each of us has, in our nose, about six million smell receptors of around four hundred different types.” Viewers of Illustra Media’s new film Living Waters can see a dramatic animation of how olfactory receptors work in the nose of a fish—the Pacific salmon. The system is so sensitive and accurate, it allows the fish to find its native birth stream after years at sea, thousands of miles away. Human noses work on much the same principle.Instant energy boost: Ever face a “fight or flight” response? A grizzly bear chasing you, perhaps? The heart pounds faster, and you find yourself with superpowers you didn’t know about. Science Daily describes how this works. The mitochondria (power plants) in heart muscle increase the uptake of calcium ions. We’ve heard about adrenaline; here’s how it interacts with calcium and molecular machines:In the fight-or-flight response, the release of adrenaline activates numerous systems in the body to prepare for the perceived stress. A key aspect of this response is an increase in cardiac contractility. Adrenaline increases calcium cycling in the heart to drive contraction. That same calcium enters mitochondria through a channel known as the mitochondrial calcium uniporter (MCU).DNA damage alarm: Science Daily also tells about a “novel DNA damage alarm” that was discovered by researchers at Erasmus MC. DNA breaks or loops that prevent transcription set off alarms, including a protein called ATM, that bring the repair crews to the damage site.Anybody need Darwin here? Anyone? He can’t be found; he’s off yonder tending to his persistent headaches and stomach aches.We just keep piling on the evidence of design. Some day, it may sink in with design deniers. Hey! That’s it. Since it’s so popular to call people denialists, let’s apply the label to those who deny intelligent design: Design Denialists! Actually, Paul had the idea first (Romans 1:18-22).(Visited 35 times, 1 visits today)FacebookTwitterPinterestSave分享0
Share Facebook Twitter Google + LinkedIn Pinterest Are you looking for a way to increase profitability on your farm? Or are you looking to make some production changes that might offer more sustainability in the long run? Transitioning to organic production may help a farm achieve these goals. There are costs and challenges to making the three year transition on a crop or livestock farm and a lot of careful consideration should be given before making the switch.One of the best ways to learn is from those who have been through the process before. Join a panel of organic crop and livestock farmers to learn the ins and outs of transitioning and maintaining organic crops and livestock herds.The panelists include:Ron Burns- corn, soybeans, wheat Doug Yoder- corn and wheat Wesley Krabill- corn and soybeans Kevin Bell- row crops, hay, pasture, beef cattleThis will be an informal setting where the panelists will share their experiences and farmers can ask questions they have about organic production. The event will take place on February 21, 2018 in Conference Room B of the Champaign County Community Center, 1512 South US Hwy 68, Urbana.Dinner, sponsored by Kalmbach Feeds and Crop Production Services, will be available at 6pm and the program will begin at 6:30. Please RSVP by Feb 19 to 937-484-1526 or Douridas.firstname.lastname@example.org.
A two-and-a-half-year-old girl was allegedly raped and killed in Pune, a police official said on Wednesday.The girl, the daughter of a labourer, was abducted from a shanty at a construction site in Pimple Saudagar area on the city’s outskirts while her family members were asleep, he said.When the girl’s family members were unable to trace her, they lodged a missing complaint with Sangavi police.“Her body was found in the same area on Tuesday. The autopsy report revealed she was sexually assaulted before being killed,” the official said.Some people from the area have been detained and are being questioned, police said.
Top seeds in both the men’s and women’s singles event advanced to the semifinals of the Fenesta Open National Tennis Championships on Thursday.Top seed Jeevan Nedunchezhiyan breezed his way into the last four of men’s singles with a clinical performance against fifth seed Ashwin Vijayaraghawan. The Tamil Nadu lad had little trouble during his 6-1, 6-2 victory. He will next face third seed Siddharth Rawat, who came from a set down to defeat Vaidik Munshaw 1-6, 6-2, 6-1.In the other quarterfinal matches, Ramkumar Ramanathan was at ease against local hope Saurabh Singh, winning 6-1, 6-2 setting up a semifinal clash with Maharashtra’s Arjun Khade emerged victorious after a hard-fought battle. Khade had a tough battle but managed to hold on to his nerves to get the better of 11th seed Mohit Mayur Jayaprakash 7-5, 6-4.The women’s singles appeared to be following a similar script before Sri Vaishnavi Peddireddy caused an upset, knocking out fourth seed Shweta Rana in three sets. Vaishnavi fought her way back after being a set down to oust Shweta 1-6, 6-2, 6-1.Her reward for coming through the tough match is a semifinal clash against Delhi girl Prerna Bhambri. Bhambri eased past state mate Simran Kaur Handa 6-0 6-4 but going by the way Vashnavi has played in this tournament so far, Bhambri will have to be cautious.The other semifinal will see top seed Rishika Sunkara, who proved her credentials with a 6-1 6-2 thrashing of eighth seed Vaniya Dangwal, take on third seed Natasha Plaha. Natasha fought a tough first set against fifth seed Eettee Mehta before getting her act together to advance into the next stage with a 7-6 (5) 6-3 victory.advertisementIn the ladies doubles semifinals, Treta Bhattacharya and Natasha had it easy against the fourth-seeded combine of Tarannum Handa and Manya Nagpal, winning 6-1 6-1 to set up a title clash with third-seeded Prerna Bhambri and Rishika Sunkara. Bhambri and Sunkara, who may well end up playing against each other in the singles final, registered a 3-6, 6-1, 10-8 win against top seeds Sri V Peddireddy and Prarthana Thombare.In the boys Under-18 doubles final, top seeded Anvit Bendre and Abdullah Shaikh convincingly won 6-4 6-0 against Shailender Boniface and Gary Tokas. In boys singles, top seeded Andhra Rishab Agarwal beat M Sai Nikhil by 6-1, 6-0 while second seeded Shaikh Abdullah beat Ranjeet Singh by 6-0, 7-5. Third seeded Karan Salwan of Delhi beat Hardeep Sandhu 7-5, 6-4.The Girls singles, though, saw an upset with second seed Tarranum Handa getting past top seed Simran Sethi 6-3, 6-4 to enter the semifinals while Pranjala Yadlapalli outplayed 11th seed Amrita Mukherjee 6-3, 6-3. Fourth seed Sai Samhitha beat Rimpledeep Kaur 6-4, 6-0.