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临沧阴道分泌物有腥味黄
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发布时间: 2025-06-02 12:43:29北京青年报社官方账号
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  临沧阴道分泌物有腥味黄   

Being home more during the pandemic, and with less traffic on the roads from stay-at-home orders, many people have heard more bird calls and the sounds of nature in urban areas. Scientists now say at least one bird species has been able to adjust their bird song because of the lack of human noise to compete with.Researchers have been studying the white-crowned sparrows in and around San Francisco for more than two decades. They compare their songs in recent years with recordings made in the 1970s.They found as traffic levels increased over the decades, the lowest frequencies of the sparrows’ song rose. This allowed their song to be heard above the low hum of vehicles. The top frequencies remained the same, so the total frequency bandwidth of their communication was narrowed.Degrading their songs this way, and limiting their range, makes them less effective at deterring rivals, attracting mates, or hearing their own chicks, according to researchers. In noisy environments, birds have to sing louder, which research has shown can result in stress and can speed up a bird’s aging and disrupt their metabolisms.When stay-at-home orders and coronavirus pandemic safety measures were put in place in March, the lead researcher, Elizabeth Derryberry, remembers seeing an image of the Golden Gate Bridge in San Francisco completely empty of cars or humans. She wondered how the sparrows were responding.They compared audio recordings of the bird songs from spring 2015 and 2016, to those taken this spring. The recordings were made in a variety of urban and rural locations around the greater San Francisco area.“We found that birds sung at lower minimum frequencies, achieving greater bandwidth songs in newly open acoustic space. An increase in frequency bandwidth results in the transmission of more information and greater vocal performance,” the study states.The samples taken in 2020 revealed the white-crowned sparrows had changed their tune, so-to-speak, and were singing softer and using a wider range of frequencies. They also were able to communicate twice as far as previous recordings.“This doubling in communication distance could elevate fitness by reducing territorial conflicts and increasing mating potential,” researchers stated.Researchers also say this explains why more people report hearing birds during the pandemic. Since the songs are traveling farther distances, humans are able to hear more of them.They also say the changes in the birds’ songs were more pronounced in urban areas compared to the rural location samples. This would make sense, they say, because the traffic noise did not change as drastically in the rural locations during the pandemic.“Our findings indicate that songbirds like white-crowned sparrows have a striking capacity to exploit newly empty soundscapes following acute but ephemeral amelioration of noise pollution, suggesting that lasting remediation might engender even more promising outcomes, such as demographic recovery and higher species diversity in urban areas,” they concluded. 3055

  临沧阴道分泌物有腥味黄   

Brazilian President Jair Bolsonaro announced Tuesday that he has tested positive for the coronavirus.Bolsonaro made the announcement in a televised address.“I’m well, normal. I even want to take a walk around here, but I can’t due to medical recommendations,” Bolsonaro said, according to The Associated Press. “I thought I had it before, given my very dynamic activity. I’m president and on the combat lines. I like to be in the middle of the people.”Bolsonaro has repeatedly trivialized the pandemic since it reached Brazil. He's often photographed without a mask in crowds and shaking hands with government officials and supporters.Bolsonaro wore a mask during Tuesday's address.During his speech, he encouraged Brazilians to continue living their lives normally, saying that the country needed to get its "economy in gear."The country has more than 1.6 million confirmed cases of the virus — the second-most in the world, behind the U.S. — and more than 65,000 deaths linked to the disease. 1002

  临沧阴道分泌物有腥味黄   

BOISE, Idaho — The Idaho Anne Frank Human Rights Memorial in Boise has been vandalized by stickers featuring a swastika and the words "we are everywhere." The Wassmuth Center for Human Rights posted on Facebook the stickers had been placed there on Tuesday. 266

  

BOSTON (AP) — Basketball Hall of Famer K.C. Jones, who won eight NBA championships as a Celtics player in the 1960s and two more as the coach of the Celtics team that took the titles in 1984 and '86, has died. He was 88.The Celtics said Jones' family confirmed on Friday that he died at an assisted living facility in Connecticut, where he had been receiving care for Alzheimer's disease for the past few years.In a statement, the Celtics said Jones was both a "fierce competitor and a gentleman.""He made his teammates better, and he got the most out of the players he coached," the Celtics said. "Never one to seek credit, his glory was found in the most fundamental of basketball ideals – being part of a winning team. The Celtics family mourns his loss, as we celebrate his remarkable career and life."In 1955-56, Jones and Bill Russell led San Francisco to back-to-back NCAA championships, the Associated Press reported. Russell and Jones also won Olympic gold medals at the 1956 Games in Melbourne while playing basketball on the U.S. team.Jones joined Russell in the NBA when the Celtics drafted Jones in the second round of the 1956 NBA Draft, and they both went on to win eight-straight NBA championships from 1959-66.In 1967, Jones retired, and the Celtics hung his No. 25 from the rafters. After retiring as a player, Jones began coaching, first in college and then joined the Los Angeles Lakers in 1971. In 1972, he won another NBA title.Jones earned three more NBA championships with the Celtics, first as an assistant coach in 1981, and then as head coach in 1984 and 1986. 1595

  

BALTIMORE, Md. - The pitches Brandon Woody has bent on the trumpet have brought him to places many kids who were born in West Baltimore and grew up over East Baltimore only dream of.“The trumpet has allowed me to fly,” Woody said. “It’s allowed me to leave my city. It’s allowed me to go college in New York and California for free.”He started out playing drums at Leith Walk Elementary in East Baltimore.He quickly realized he wanted to make a change from percussion to brass.“I couldn’t take the instrument home for a whole two weeks, because we couldn’t take an instrument home until we got a sound out of it. Until we were able to play it.”After two weeks he could make a sound and has been bending pitches since.He’s been able to meet his idols like Theljon Allen, Christian Scott, and Clarence Ward.“They have made me more curious about being a black creator. About pushing the envelope, pushing the boundaries of the trumpet. Not putting it in a box. People that just inspired me to be myself my 100% raw self.”He said music saved his life and has allowed him to grow from the rich flow of musical culture in his hometown while creating his own sound.“It’s not really real if you’re not acknowledging where the notes, the culture, the sound, the tone, the intonation that you’re playing, where that was influenced by.”He’s featured in Calvin Klein’s One Future #CKOne global campaign.According to the press notes from Calvin Klein, the goal of campaign is to highlight young voices against the backdrops of their hometowns.Here’s a quote from Woody in one of the ads.“They make us out to be so angry, so violent, so hateful. We need to normalize our vulnerability, our honesty, our sensitivity.”Woody is appreciative of the opportunity to showcase his and his friend's talents.More importantly, he hopes connecting with the global company creates a path forward for the city and its young people.“Who are the young kids with potential that want to play the trumpet or that already play the trumpet?” Woody said. “How can I make it easier for you? How can I bridge the gap?”The name of his band is Upendo, which means love in Swahili.They are in talks to do virtual lessons for kids.Drummer Devron Dennis teaches in Baltimore City.“My main goal is to inspire in any way I can,” Dennis said. “I like to do that by playing drums and teaching.”Keyboardist Troy Long’s fingers found the keys when he couldn’t walk or play trumpet because of back surgery.“I just got this keyboard a month before surgery. While I was in recovery, I taught myself how to play.”With his friends by his side and his trumpet in his hands, he’s pushing the limit of three valves and creating a sound that’s his own.“I can play like ya know a young man that’s growing up in Baltimore and had experiences that you have when you grow up in Baltimore,” said Woody. “That’s all I can sound like. I can’t sound like nothing else.”Proud sons of Baltimore showing the beauty that lives in our city.Woody plans on releasing his first album sometime next yearThis story was first reported by Eddie Kadhim at WMAR in Baltimore, Maryland. 3113

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