安阳大功率工业吸尘器(驻马店工业吸尘器) (今日更新中)

The stock market is on the comeback trail.After another wobbly session, the Dow soared 287 points, or 1.2%, on Friday. It was the index's best day since August.The Dow had soared 400 points at the open before giving up most of those gains and then resuming its rally. The Dow lost 1,378 points over Wednesday and Thursday.The broader S&P 500 jumped 1.4% on Friday. The Nasdaq, which has taken the brunt of the recent stock market turbulence, spiked 2.3%.Despite Friday's rebound, all three major indexes suffered their worst weeks since March. And the S&P 500 is down three straight weeks. That hasn't happened since the Brexit referendum of June 2016.Investing experts weren't exactly sure what turned stocks negative by midday. The driving forces behind this week's downturn -- trade war and interest rate fears -- were around before this week, and yet market volatility is spiking."The sellers have control right now," said Justin Walters, co-founder of Bespoke Investment Group. "The scariest sell-offs are the ones you can't tie to a specific reason."Stocks had turned sharply south over the past week because investors are concerned about rising interest rates. As the Federal Reserve raises rates to keep the economy from overheating, investors have been getting out of bonds, driving down their price and driving up their yields. Suddenly, the return on bonds has become competitive with some stocks — particularly risky tech stocks.Rising interest rates also increase borrowing costs for households and businesses, eating into corporate profits."What we are seeing now is changing sands. The ground isn't stable and people are figuring out where to go next," said JJ Kinahan, chief market strategist with TD Ameritrade.Tech stocks have come under fire because they are some of the riskiest and most expensive parts of the market. Investors fear that tech companies may not hold up well in a downturn, particularly as interest rates spike. A proxy for the tech sector had its sharpest plunge in seven years on Wednesday.But Big Tech on Friday regained some of its losses. Facebook (FB), Apple (AAPL), Amazon (AMZN), Netflix (NFLX) and Google (GOOGL) were all up.Asian and European markets also came back Friday. The Hang Seng soared 2.2%. Stocks in Shanghai rose 0.9% and the Nikkei rose 0.5%. Stocks in London, Germany and France all rose about a half percentage point.Markets had bounced back Friday morning following news that President Donald Trump plans to meet next month with Chinese leader Xi Jinping at the G-20 summit. That eased some of the investors' fears about another trade war escalation. China also reported its exports rose nearly 15% in September, stronger than expected. That suggests China is weathering the first waves of new tariffs that the Trump administration imposed on billion of Chinese exports this summer.But Kinahan is still worried about US-China trade talks. He thinks that a deal is key in order for the markets to get back on track, adding that a full-blown trade war could undo much of the positives from the Trump administration's pro-business policies."The concern is that if nobody blinks, it could negate all the tax cuts we had," he said.Earnings season also kicked off Friday morning, with JPMorgan (JPM) and Citigroup (C) reporting their quarterly finances before the bell. Wall Street analysts expected the financial sector to post another incredibly profitable quarter — and JPMorgan managed to?beat their already lofty expectations.In times of market turbulence, there's nothing like soaring profits to calm investors' nerves.Rebounds after disastrous market selloffs are common. Investors who think the market may be oversold look to buy stocks they think are suddenly cheap.But markets are fickle. 3804

The Smithsonian announced the reopening of two prominent Washington, D.C., area attractions that have been shuttered during the spread of the coronavirus.The National Zoo located in Washington and the National Air and Space Museum in nearby Chantilly, Virginia, are scheduled to reopen Friday with a number of safety precautions in place. All other Smithsonian attractions will remain closed. Most other prominent D.C. destinations, including the White House and Capitol, also remain closed to visitors.Both at the zoo and the National Air and Space Museum, all visitors age 6 and over will be required to wear face coverings. The zoo and museum are also requiring timed tickets, and has scaled back its hours to close at 4 p.m.“As a public entity, we thrive on serving our visitors and making our collections readily available to them, virtually and in person,” said Lonnie Bunch, Secretary of the Smithsonian. “However, the safety and well-being of our staff, visitors and volunteers come first and are paramount, so we are taking a deliberate, phased and cautious approach to reopening. Our goal is to be safe and measured in order to adjust and pivot as necessary.” 1177

The Tulsa Athletic, a semi-pro soccer team in Oklahoma, announced on Wednesday that they will no longer play 'The Star-Spangled Banner' before home matches.Team officials said they want to ensure an inclusive environment for athletes, supporters, and the community. 273

The surviving members of a grief-stricken Oregon family who believe a 13-year-old boy died while trying to save his grandmother in a wildfire detailed their harrowing attempts to escape the fire. The Statesman Journal reported that 13-year-old Wyatt Tofte of Lyons, Oregon, and his 71-year-old grandmother Peggy Mosso are among the six reported fatalities in the state from the ongoing fires. Wyatt, who was found Wednesday with his dog, is survived by his parents Angela Mosso and Chris Tofte. Angela Mosso is being treated at a burn center in Portland. More than 40,000 Oregonians have been evacuated from their homes so far and about 500,000 are in different levels of evacuation zones.The West Coast wildfires so far have consumed more land area than the size of Connecticut. In California, 10 people have died so far, with more missing. 850

The spread of COVID-19 is tough to trace and even tougher to predict, but researchers at Pittsburgh’s Carnegie Mellon University created an early warning system to help protect you from the virusMathematics professor Po-Shen Loh developed an app called NOVID, a contact-tracing app, to help communities see the virus coming before they get infected.On top of creating a brand new app, Loh teaches math to middle-school students online from his own office-turned-broadcast studio. He’s also the national coach for the United States Math Olympiad team that competes around the world.But when the pandemic hit, Loh wanted to take on one more project. “I like things that are supposed to be impossible, that can’t be done,” said Loh. Stopping the spread of the coronavirus seemed to fit the bill.“The problem with COVID is it spreads before you know you have it, that’s what makes COVID different," Loh said. "The only way you can control this disease is in helping people to know whether or not COVID is coming close to them in advance."That’s where the NOVID app can help, said Loh. “Shows the virus coming towards you based on your relationship network, so that you can protect yourselves from others before you actually get infected," Loh explained of the app. "This is in contrast to most other contact tracing apps that are designed to protect others from you."The app shows you positive cases in degrees of separation. A positive case in the first degree would be someone you live with. The second degree could be your coworker or a friend. The third degree would be that person’s spouse or child. Each degree of separation is a possible pathway for you to come in contact with COVID-19.“This thing shows you the virus coming towards you, kind of like a hurricane satellite shows you a hurricane coming towards you,” said Loh.In addition to showing you cases as they pop up around you, the app can track the distance between phones down to the inch.It uses both Bluetooth and ultrasound waves to give you that measurement to make sure you’re safely social distancing.“We don’t know of any other contact-tracing app in the entire world which will tell you, ‘here’s how far away we think the device was,’” said Loh.The safety of your personal information is one of the most important features of this app. It collects data, while you stay completely anonymous.“Many people are distrustful of an app that does contact tracing,” said Loh. “We never ask for your phone number or email."Those who are positive can self-report their case in the app. Loh is also working with cities and counties to integrate NOVID into health departments across the country. He said the health departments would issue a ticket with a number to each person who tests positive for the virus.That person would enter the number into their NOVID app, anonymously reporting the positive case in the community.“If this thing actually caught on, you’d see in all the cities and towns, whether it’s rural or urban, whenever COVID starts to rise up, you’d start to see everyone take caution. Not because anyone forced them to, but because they saw this is what would be useful,” said Loh.To create the powerful community resource Loh is hoping for, he said more people need to know about the app.“Right now, we only respond when the intensive care units are full, and then it’s too late, and people die on the sidewalk. But, what we wish would happen, is that people could see it coming, and then, everyone starts to be careful at the right time. With more traction, we can save more lives,” he said.Loh is hoping he can not only help save lives but help bring back life as we knew it.“The goal of what we’re trying to do is to give people headlights to drive in the dark. Our app is not designed to let other people control you; our app is designed to help you control your life,” said Loh.For more information on NOVID or to download it, click HERE. 3928

来源：资阳报