Tag: 重庆品茶 你懂

January 17, 2021 | |Post a Comment

first_imgBy Sharon DowdyUniversity of GeorgiaUniversity of Georgia scientists are using DNA technology and old-fashioned animal instinct to find the best ways to control wood-destroying carpenter ants.“Carpenter ants are a major pest problem nationwide,” said Dan Suiter, an entomologist with the UGA College of Agricultural and Environmental Sciences. “They cause significant damage each year.”Wood-chewersUnlike termites, carpenter ants don’t eat wood. They chew it. “They expand it into a nest gallery that looks like Swiss cheese,” Suiter said. “Then they live in the galleries.” Carpenter ants are big and black and live mostly in trees, he said. In the Northeast, carpenter ants destroy more wood than termites.Based on the UGA Griffin, Ga., campus, Suiter and CAES genetic entomologist Tracie Jenkins test baits designed to kill the ants. They are monitoring 20 sites in the local city park because the hardwood trees there replicate those found in a typical suburban neighborhood. They monitor the test sites at night when the ants forage for food.Huge and nocturnal“During the day, they live up in the leaves and in hollowed-out tree holes and knotholes,” Jenkins said. “At night, they come down, and you can literally see the well-worn foraging trails they habitually use.”Ant samples are taken from the park back to the laboratory where Jenkins uses DNA biotechnology to determine the ants’ lineage or family relationships, which form colony structure.“We assume each colony has a single queen, so knowing the queen’s maternal fingerprint will help us track her progenies’ movements,” she said. “The winged ants are the ones that mate. We’ve discovered colonies that are physically far apart can actually be descended from the same female queen.”Once a colony’s genetic structure and movements are known, Suiter and Jenkins can develop management strategies and determine which baits are effective.Families don’t fightTo find out if colonies are related, Suiter said, you can also do what he calls “ant behavioral studies.”He places ants from different sites in a Petri dish. The ants that fight each other are not related.“The ants have colony-specific smells on their bodies,” Suiter said. Ants pick fights by using their antennae to spar, he said. Then it gets aggressive. “They grab each other by a leg, and one will take another’s leg off,” he said. “Then they lock jaws and do a circle-dance.”Deadly acidThen somebody brings out the heavy artillery.“Carpenter ants can spray formic acid,” Suiter said. “So, the first one to turn around and spray formic acid is the winner. It’s like getting a face full of tear gas, and they have to be very irritated to do it.”After six months have passed, Suiter and Jenkins will return to the test sites at the park. If they find ants, they will again take samples and run DNA analyses to determine if the ants are from the same colony that initially occupied the site.“We want to eliminate the ants in a colony by using the baits, then go back and see if the ants that come back are from the same colony,” he said. “To truly know how well the baits work, we have to know if the same colony of ants or a different colony move in after we eliminate the first colony.”To see carpenter ants, go outside after 9 p.m. armed with a flash light. “You may see a couple in the daytime, but you’ll see hundreds if not thousands at night,” Suiter said.last_img read more

September 25, 2020 | |Post a Comment

first_imgILOILO City – Flights from Singaporeto Iloilo and vice versa must be temporarily halted, too, according Mayor JerryTreñas, as a precautionary measure against the spread of the novel coronavirus(2019-nCoV). In letters to three airlines, he pointed out the “rising cases ofthe novel coronavirus globally.” The Iloilo Airport services twointernational flights – Iloilo to Singapore and vice versa, and Iloilo to HongKong and vice versa. Yesterday, Treñas wrote letters toCebu Pacific Air, Philippine Airlines and Air Asia that they “voluntarily ceaseyour international flights to and from countries positive with the 2019 novelcoronavirus immediately.” Treñas did not mention theSingapore-Iloilo flights in his letter to the three airlines but in mediainterviews he pointed out such service. Itseems to start with a fever, followed by a dry cough and then, after a week,leads to shortness of breath. Thethermal scanner has also been activated to detect passengers with fever – oneof the symptoms of those infected with the 2019-nCoV. Cebu Pacific already halted its HongKong-Iloilo flight beginning Feb. 4. This would stretch up to March 29,according to the Civil Aviation Authority of the Philippines (CAAP). “Konmag ginutok to sila sa Kalibo kag may magmasakit, waay man na sila ibannga kadtuan kundi diri man gihapon sa aton. We are concerned. Ginaproteksyunan ta ang aton pumoluyodasun sige ila pa pasulod,” Treñas lamented. Both Hong Kong and Singapore havereported 2019-nCoV infections (18 and 28, respectively). PAL and Air Asia actually have noSingapore and Hong Kong flights from and to the Iloilo Airport in Cabatuan,Iloilo. Only Cebu Pacific has. Hospitalauthorities would be contacted for an ambulance that would take the passengersto the hospital for further examination. “Thesuspected cases won’t be passing the passenger terminal but through the ramp ingoing to the waiting ambulance,” Parreño stressed. Yesterday, Singapore raised itsDisease Outbreak Response System Condition (Dorscon) level from yellow toorange. This means that the nCoV infection is deemed severe and spreads easilyfrom person to person but has not spread widely and is being contained. “Feverishpassengers would be ushered to an isolation room,” said Parreño. At the Iloilo Airport, CAAP’s Parreñosaid hisagency tightened medical quarantine protocols. Bureau of Quarantine personnelhave been posted on Aerobridge 3, the designated passageway of passengers arrivingfrom Singapore. From Wuhan City, China, the 2019-nCoVhas now spread to more than 25 countries. There have been more than 28,000cases worldwide but only two of the deaths have been outside mainland China(one in the Philippines and one in Hong Kong). He also expressed concern over thecontinued entry of international flights at the Kalibo International Airport,although those from China have been temporarily stopped. Thefast-moving infection, which causes pneumonia-like symptoms, has been declareda global emergency by the World Health Organization. However, the airline is maintainingits Singapore to Iloilo flights and vice versa, according to Iloilo Airportterminal supervisor Arthur Parreño. Butin more severe cases, infection can cause pneumonia, severe acute respiratorysyndrome, kidney failure and even death. Areport on the early stages of the outbreak by the Lancet medical journal saidmost patients who died from the virus had pre-existing conditions. (BBC/PN)last_img read more

September 18, 2020 | |Post a Comment

first_imgIndyCar donates $1 million to establish diversity program INDIANAPOLIS (AP) — IndyCar and Indianapolis Motor Speedway are making an active effort to increase diversity throughout the industry with a $1 million donation to a new “Race for Equality & Change” initiative. The initiative will support both internal and external programs. IndyCar does not have any Black drivers. Bubba Wallace is the only full-time black driver in NASCAR’s top Cup Series. The initiative announced before Saturday’s race at Indianapolis Motor Speedway is aimed at both developing diversity within the sanctioning body and at the speedway, as well at the grassroots racing levels. F1-AUSTRIAN GRAND PRIX Pacesetter Serpentine goes wire-to-wireEPSOM, England (AP) — The first English Derby to take place without spectators has taken a surreal turn as 25-1 shot Serpentine went out as the pacemaker and was never caught for a stunning six-length victory at an empty Epsom Downs. The nature of Serpentine’s wire-to-wire victory added to the bizarre feel of the 241st running of the classic. The course was fenced off and there were only a few hundred people on site at a prestigious event that usually attracts as many as 100,000 race-goers. Irish trainer Aidan O’Brien claimed a record eighth win in the race.It marked another triumphant day for O’Brien, who saddled the winner of the Oaks hours earlier. Race favorite Love was his eighth winner of the classic for fillies.MLB-BRUMMETT OBIT Ex-MLB pitcher Tyson Brummett, 3 others die in plane crashAMERICAN FORK, Utah (AP) — A former Philadelphia Phillies pitcher and three others died in a plane crash in rural Utah. The Utah County Sheriff’s Office says ex-pitcher 35-year-old Tyson Brummett of Salt Lake City was flying the small plane, which crashed near Box Elder Peak in American Fork Canyon just before 8 a.m. Friday. A witness said the plane went into a downward corkscrew motion as it crashed. TV station WPVI reports all four people on board did not survive. The National Transportation Safety Board is investigating. NBA announces schedule for Florida scrimmagesUNDATED (AP) — The NBA announced the schedule Saturday for scrimmages at the Disney complex in Florida, with 33 games set for between July 22 and July 28.Each of the 22 teams that will be part of the season restart has been scheduled for three games.All three arenas at the ESPN Wide World of Sports complex that will be used for the restart will also play host to the scrimmages.There will be between three and six games per day during that six-day span. The season will officially resume with the start of seeding games on July 30. Update on the latest sports July 4, 2020 Frances Tiafoe has coronavirus, exits Atlanta tennis eventATLANTA (AP) — Frances Tiafoe has tested positive for the coronavirus and withdrawn from the All-American Team Cup tennis tournament. He was scheduled to face Tennys Sandgren on Saturday in the weekend tournament in Atlanta involving eight top American men’s players.The event is allowing a limited number of fans and not requiring masks, though will provide them if requested.Tiafoe defeated Sam Querrey on Friday, but was showing symptoms after the match and a test was positive. He says he had tested negative for the virus as recently as a week ago.INDYCAR-DIVERSITY PROGRAM Johnson missing Brickyard 400 after testing positiveINDIANAPOLIS (AP) — NASCAR’s extravagant weekend at Indianapolis Motor Speedway has been rocked by its first driver testing positive for the coronavirus. Seven-time NASCAR champion Jimmie Johnson will miss what was supposed to be his final Brickyard 400 as he quarantines following the Friday test result. He was asymptomatic but wife Chani had tested positive, so Johnson had himself checked. Johnson on Sunday had hoped to tie Jeff Gordon and Michael Schumacher as the only drivers with five victories at Indianapolis. Instead, Justin Allgaier will drive the Hendrick Motorsports No. 48 Chevrolet. INDYCAR-INDIANAPOLIS Manager Brian Snitker says the four players, including right-hander Touki Toussaint and infielder Pete Kozma, agreed to have the team disclose their positive tests.Snitker says Freeman had a negative intake test before having a positive test on Friday. Snitker said Freeman has a fever and “is not feeling great.” He says “it will be a while” before Freeman can return to the team.The Braves signed Smith, the former Giants reliever, to a three-year, $39 million deal in the offseason.MLB-BRAVES-NAMEBraves give no indication of considering name change Teams begin arriving at Disney for a brief quarantine followed by the start of their training camps on Tuesday.SOCCER-FC DALLASMLS tournament match postponed by Dallas positivesDALLAS (AP) — The MLS Is Back tournament match between FC Dallas and the Vancouver Whitecaps has been postponed after six FC Dallas players tested positive for COVID-19.The group stage match was scheduled to take place Thursday. MLS officials announced the postponement Saturday and said a new time and date would come later. Associated Press Tanaka’s hat flew off and he immediately collapsed to the ground, cradling his head at Yankee Stadium. Trainers quickly ran to Tanaka, who stayed down for a few minutes before sitting up.Trainers appeared to treat the left side of his head.Tanaka was helped to his feet and walked off the field with help.MLB-BRAVES-FREEMAN TESTS POSITIVEFreeman, Smith among four Braves testing positiveATLANTA (AP) — Atlanta Braves four-time All-Star Freddie Freeman, premier reliever Will Smith and two teammates have tested positive for the coronavirus. Share This StoryFacebookTwitteremailPrintLinkedinRedditYANKEES-TANAKA INJUREDYankees pitcher Tanaka hit in the head by drive from StantonNEW YORK (AP) — Yankees pitcher Masahiro Tanaka was hit in the head by a line drive off the bat of slugger Giancarlo Stanton during live batting practice Saturday. It was a frightening scene during the team’s first official summer camp workout. Bottas takes pole position for season-opening Austrian GPSPIELBERG, Austria (AP) — Valtteri Bottas has upstaged Mercedes teammate Lewis Hamilton by taking pole position for Formula One’s season-opening Austrian Grand Prix. The Finnish driver edged out the world champion by .012 seconds at the Red Bull Ring in Spielberg. Red Bull driver Max Verstappen was back in third place and Lando Norris gave McLaren a boost by finishing fourth. Verstappen has won the past two years in Austria. Hamilton was chasing a record-extending 89th career pole. Ferrari struggled with Charles Leclerc nearly one second behind in seventh and Sebastian Vettel a miserable 11th.HORSE RACING-ENGLISH DERBY FC Dallas confirmed Wednesday that players had tested positive upon their arrival in Florida for the month-long tournament. The entire FC Dallas delegation is quarantining in their rooms at the walt Disney World Swan and Dolphin Resort.Vancouver’s team is scheduled to arrive in Orlando on Monday.MLS said the postponement would allow both teams to have additional training days in Orlando before opening tournament play.FC Dallas will now play its first tournament match July 15 against the Seattle Sounders.VIRUS OUTBREAK-TENNIS-TIAFOE Dixon takes first IndyCar Grand Prix winINDIANAPOLIS (AP) — Scott Dixon retook the lead with 17 laps to go and pulled away from Graham Rahal to earn his first IndyCar Grand Prix victory. The five-time series champion beat Rahal to the checkered flag by 19.9469 seconds. It’s the first time in Dixon’s 20-year career he has opened the season with back-to-back victories. He won the season opener last month at Texas. Dixon, of Chip Ganassi Racing, also broke Team Penske’s five-year reign on the IndyCar GP title. Dixon’s 48 career wins are third all-time behind A.J. Foyt and Mario Andretti.NBA ATLANTA (AP) — With teams in two pro sports taking a second look at names deemed offensive to Native Americans, the Atlanta Braves are giving no indication they are willing to consider a similar change.The Cleveland Indians said Friday they’re reconsidering their name following the furor over the NFL Washington Redskins name.The Braves released a statement saying the team “honors, supports, and values the Native American community. That will never change.” The Braves said they “have much work to do on and off the field.”The Braves have not said if they will encourage the tomahawk chop and chant by fans this season.NASCAR-BRICKYARDlast_img read more