太原骨骼与内脏关系模型(湖南六倍大下颌磨牙剖) (今日更新中)

A Philippine Airlines jet with flames spurting from one engine has returned safely to Los Angeles International Airport shortly after takeoff.Ian Gregor of the Federal Aviation Administration says Flight 113, a Boeing 777 bound for Manila, reported a problem with the right engine after takeoff Thursday morning. It turned around and landed at about noon.Passengers and people on the ground videotaped blasts of flame coming from the right engine.Passenger Walter Baumann tells KABC-TV he heard a series of booms and saw "balls of fire."LAX spokesman Heath Montgomery says there was no flame showing from the plane when it landed but firefighters were on hand as a precaution.The airline says all 342 passengers and 18 crewmembers are safe. 752

A new bill proposed in the North Carolina General Assembly is proposing a 15-point grading scale, changing an F grade from a 59 percent to a 39 percent.Under the proposed scale, these would be the new benchmarks for each letter grade:A - 85-100B - 70-85C - 55-69D - 40-54F - 0-39The bill also prohibits other designations related to performance measures from being added, including "plus" or "minus."The North Carolina school system is currently on a traditional 10-point scale. 490

A police department in Texas has apologized to a man after two mounted police officers leashed him to their horses during an arrest.The photos, taken by bystanders in Galveston, Texas, prompted outrage and accusations of racism against the police department.According to the Galveston Police, 43-year-old Donald Neely was arrested for criminal trespassing on Saturday. During his arrested, two officers — identified only as P. Brosch and A. Smith — clipped a rope to his handcuffs, which was being held by one of the officers.The officers' body cameras were activated at the time. The department did not say whether the two officers had been disciplined. 666

A melee marred the end of Thursday's NFL game that saw the Cleveland Browns defeat the Pittsburgh Steelers 21-7, in a battle between two traditional rivals. With just eight seconds remaining, Browns defender Myles Garrett ripped the helmet off of Steelers quarterback Mason Rudolph. Garrett then used the helmet to strike Rudolph. This came as players from both the Browns and Steelers were exchanging punches and shoves. The incident began when Rudolph made a short pass while Garrett was attempting a sack. As the two players were on the ground, it appeared Rudolph may have been either trying to remove Garrett's helmet, or had his hand stuck in Garrett's helmet. Then Garrett pulled Rudolph's lid off, and Rudolph responded by getting into a shoving match with Garrett. That is when Garrett struck Rudolph in the head with Rudolph's helmet. In a postgame interview with Fox Sports' Erin Andrews, Browns quarterback Baker Mayfield called Garrett's actions inexcusable, and predicted that Garrett would be suspended. "I don't care rivalry or not, we can't do that," Mayfield said. "That is just endangering the other team."Garrett himself called his actions "foolish.""I shouldn't allow myself to slip like that. It's out of character," Garrett said.Browns QB Baker Mayfield joined 1296

Although scientists study space every day, what’s been difficult learning more about "deep space." But there's one company helping NASA and the U.S. Air Force go where no satellite has gone before."Deep space" is well outside the Earth's atmosphere, lying beyond the Earth-moon solar system. It's also known as "interstellar space." Deep space is a mystery to a lot of scientists. NASA's Voyager spacecraft that was launched in 2011 reached the edge of our solar system.Many scientists are wanting to make their way past Jupiter to learn even more, but there are limitations in the space engine technology today. A company called Roccor, based in Longmont, Colorado, is doing their best to change that.“We are just getting in a contract with NASA to do solar sailing where we are going to leave earths orbital realm and go much farther away,” said Bruce Davis, who works for Roccor.Davis and his team are working on a project called the "solar cruiser."They created what’s called a "solar sail." It essentially gets attached to a spacecraft and acts as a propeller, ultimately upping its performance by pushing it farther into deep space.“We are capturing whatever is coming off the sun — that’s radiation, that’s photons — we call it a collective pressure," Davis said. "That’s what we are trying to grab to give ourselves propulsion.”When the sail opens up, it’s as big as an office building. Right now, they are only in creation mode, but they hope to have it done soon. 1490

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