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发布时间: 2025-05-25 13:14:55北京青年报社官方账号
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LA JOLLA, Calif. (KGTV) - Scientists at the Sanford Consortium at UC San Diego will send brain tissue to space on Saturday, as part of the latest Space X launch."It sounds like science fiction, but it's actually happening right now," says Dr. Alysson Muotri, the Director of the UC San Diego Stem Cell program.He's leading a research team to study how zero-gravity environments will affect brain growth."We know from several previous studies that the human body has not evolved to deal with micro-gravity," Muotri says. "We suffer under these conditions. And the brain is also vulnerable."Muotri's team uses stem cells to create microscopic brain-organoids, tiny brain cells that will grow like a human brain.They'll send 100 of the brain-organoid cells to the International Space Station for 30 days.When the cells return, the scientists will compare them to similar cells grown in the lab on Earth, to find any differences caused by a month in space.Muotri says this study is key to helping humans in the quest to live off of Earth."The cells might age faster," he says. "That's a consequence of being under micro-gravity for long periods of time. So the brain might age. That might make you susceptible to cognitive decline, dementia or maybe Alzheimer's."Muotri says it's also essential to find out how a developing brain would grow because it could impact any pregnancy and gestation that happens in outer space."The human brain during gestation grows in a speed that's amazingly fast," says Muotri. "In space, we think that will be aggravated. It will be even bigger. So you can imagine a baby with a large brain, it might not pass through the birth channel. That might be a problem for humans in space."For more detailed information on the study, click here. 1773

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LAKESIDE, Calif. (KGTV) -- Officials with the Lakeside Union School District confirmed the closure of Winter Gardens Elementary School due to a COVID-19 outbreak.In a letter sent to families and school personnel Thursday, LUSD Superintendent Dr. Andy Johnsen acknowledged that “there have been 12 positive cases identified at Winter Gardens over the last two weeks” and because of the outbreak, the campus on 8501 Pueblo Rd. would be closed for 15 days starting Dec. 4.The school’s Extended School Services (ESS) will also be shut down.Dr. Johnsen said they closed the school Friday as, "all of the other cases we've had up until this point no other person has been identified as a close contact."Winter Gardens Elementary will proceed with distance learning from Dec. 4-18, according to Dr. Johnsen. The initial plan is to reopen the campus for in-person learning on Jan. 4.Dr. Johnsen noted that “staff members and students that may have come into close contact with the positive individuals have been directly contacted by San Diego County Public Health with further instructions.”“Because of how COVID-19 spreads, public health officials have indicated that all of us should consider ourselves as being potentially exposed,” Dr. Johnsen said in the letter.Dr. Johnsen said the infections likely originated off-campus. A La Jolla Immunologist agreed with that theory, saying on the molecular level adults are more likely to pass the virus to each other and not get it from children.Dr. Johnsen said the 12 infections is out of 308 students and staff combined. He said public health officials recommend closing schools when they reach a 5% infection threshold.He said students and staff were wearing masks, socially distant and the district hired cleaning staff to sanitize high touch points each hour and classrooms overnight. When the school reopens, Dr. Johnsen said they will not make any changes to their protocol, adding the district and public health officials support the procedures they have in place.Johnsen would not identify how many students and staff each were infected, due to privacy laws. 2115

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LA JOLLA, Calif. (KGTV) - University of California San Diego Police are investigating threats of violence to the campus during finals week. The generalized, non-specific threats were written on three women’s bathroom doors in Geisel Library, officials said. Police were notified about the threats Sunday night and Monday afternoon, according to University Police Chief David S. Rose. “Our University takes every threat of violence extremely seriously and the UC San Diego Police Department has responded and is investigating,” Rose said. Officers interviewed potential witnesses and are reviewing video to identity the person or persons responsible for the postings. UC San Diego officials consulted with police, the Behavioral Threat Team, local and federal law enforcement, and a threat assessment expert before deciding to continue with its regular finals week schedule, Rose said. More police will be present on campus, according to Rose. Anyone with information is asked to call UC San Diego Police at 858-534-4357 or email detective@ucsd.edu. 1056

  

Linkin Park did not and does not endorse Trump, nor authorize his organization to use any of our music. A cease and desist has been issued.— LINKIN PARK (@linkinpark) July 19, 2020 188

  

LA MESA, Calif. (KGTV) — The La Mesa community has continued to show its strength and resilience. But as we head into the weekend, the city's 7 p.m. curfew continues and some fear there could be more violent riots.Colorful murals now cover La Mesa businesses, destroyed by rioters and looters last weekend. For Kenny Siler, Friday is a big win. "It means the world to be able to come in here," Siler said.He drove his legally blind friends to the Vons grocery store on the first day it reopened. "If there's a good sale, [I get] a whole bunch of Gatorade, and if there's a good chunk of meat I can smoke," he laughed. He's one of the hundreds of La Mesans supporting local businesses as soon as they can. Some shop, some clean, some donate.Next to Vons, California Coast Credit Union still has not reopened. "Both ATM's and inside, everything has been just butchered," the credit union's Sr. VP of Communications, Rene McKee said.They were victims of the riots, but they are also stepping up to help. Friday, the credit union donated ,000 to the La Mesa Business Disaster Recovery Fund. The online Gofundme account continues to grow every hour, far past the original goal of ,000."It's helping to bolster the spirits of the residents here in La Mesa and these small businesses," McKee said. While glimmers of hope begin to flicker, La Mesans still face the reality that what happened last weekend, could happen again. One hundred national guard troops continue to provide added security and prevent property damage, with 100 more on standby in case the situation worsens. For Siler, who is a proud military veteran, he hopes this weekend will bring peace and order. "I support my constitution," Siler said. "Protest. But don't do what you've done," he pointed at the boarded-up walls.The money donated to the La Mesa Business Disaster Recovery Fund will be collected on June 25, 2020. Any La Mesa businesses affected by the riots can contact the East County Chamber of Commerce to apply for support funds. 2019

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