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Worse with the effects of climate change. If were expecting more extreme weather events, whether that is freeze thaw cycles, more extreme Wind Event and rainfall events, these can have an impact on the rate at which our roads deteriorate. And while local councils are calling for more regular and consistent funding to deal with them, across several british universities, Engineering Solutions also promise some answers. Our roads are either made out of concrete or asphalt. The majority of our roads are asphalt, although a lot the damage in both starts with cracks. Those cracks turn into potholes through free thaw cycles and wear and tear. The University Of Cambridge is working on a range of solutions, from sensors in the roads to investigating 3 d printed fixes and the materials that can adapt to temperature changes. We are trying to enhance these materials through, you know, their environmental impact or performance by adding things
chamber, and natural wear and tear that occurs over the years, and that s what resulted in this not working well, put stress on the heart, had the heart attack back in october, he s 58 years old, that s pretty young, but that s what happened. john: describe the graphic, what are we looking at. bicuspid valve is regulating the back flow so when you see the valve at the bottom, which is two leaflets on the left side of the screen, you see the two leaflets close every time the chamber empties and that prevents the back flow, allows the heart to function efficiently. when that does not close well from wear and tear over the years, more strain on the heart and you can get a heart attack. john: normal involve has three leaflets, that s on the left, and the bicuspid is almost a congenital defect from birth, and typically it not a problem until later in life. the tricuspid valve, it s a
crack on the phone. thank you so much. similar boeing planes remain grounded nationwide for emergency inspections, which the fha says will include looking at. all of this causing major air travel disruptions with flights canceled today. let s dig teacher with tom foreman you joins us live at the magic. talk this through the key steps that the ntsb is going to take the figure out how all of this happen. basically what they are going to do is look at the timeline of events. how it happened. this is a new plane. it only started flying in october. you are not talking about the traditional years of wear and tear, maybe something built up over time. what they are going to be doing is exactly what we are talking about. they are looking at the components involved. say how does actually break loose? the are relating things leading
The Noida elevated road, built six years ago, is in need of repairs as it is showing signs of wear and tear. Potholes and damaged road surfaces are present on various stretches, along with gaps at the expansion joints of the flyover. This poses risks for two-wheeler riders, leading to concerns of fatal accidents. The Noida Authority plans to inspect and repair the road.