wn777

wn777 WACO, Texas (AP) — Georgia's Dasha Vidmanova and Columbia's Michael Zheng won NCAA singles tennis titles on Sunday. Vidmanova, a 21-year-old senior from the Czech Republic, beat DJ Bennett of Auburn 6-3, 6-3 for the Bulldogs' first women's singles championship since 2010. Zheng, a 20-year-old junior from Montville, New Jersey, beat Ozan Baris of Michigan State 6-2, 4-6, 6-2 to become the first Ivy League player to collect an NCAA men's singles crown since 1922. The final between Zheng and Baris was the first men's NCAA tennis singles final between two Americans since 2017. More AP tennis: https://apnews.com/hub/tennis

Citigroup Lowers HP (NYSE:HPQ) Price Target to $36.50

New research from Northwestern University demonstrates how coated solar cells deliver a solar power conversion efficiency of 26 percent. This development could offer far higher performance for homes and businesses. Currently, perovskite solar cells offer a lower-cost energy alternative to silicon solar cells, but they tend to degrade over time (a consequence of prolonged exposure to sunlight, extreme temperature fluctuations, moisture and humidity). This has led to silicone dominating solar technology for many years. While silicon is durable and reliable, it is expensive to produce and is approaching its ceiling of efficiency. Seen as a low-cost alternatives, perovskite solar cells typically use an ammonium-based coating layer to enhance efficiency. While effective, ammonium-based layers degrade under environmental stress, including heat and moisture. To counter this, the researchers showed that by using amidinium ligands they could increase the degradation of passivation layers by ten times. Amidinium ligands are stable molecules that can interact with perovskite to provide long-lasting. The amidinium-based molecules comprise a central carbon atom bonded to two amino groups. Because their structure allows electrons to spread out evenly, amidinium molecules are more resilient under harsh conditions. The amidinium-coated cells also tripled the cell’s T90 lifetime (defined as the time it takes for a cell’s efficiency to drop 90 percent of its initial value when exposed to harsh conditions). This was based on 1,100 hours of testing. By chemically reinforcing the protective layers, the scientists significantly advanced the durability of the cells without compromising their efficiency. This introduces the steps towards practical, low-cost alternative to silicon-based photovoltaics. The coating also led to a power conversion efficiency over 26 percent (this means the cells successfully converted 26.3 percent of their absorbed sunlight into electricity). According to lead researcher Bin Chen: “The field has been working on the stability of perovskite solar cells for a long time. So far, most reports focus on improving the stability of the perovskite material itself, overlooking the protective layers. By improving the protective layer, we were able to enhance the solar cells’ overall performance.” The research has been published in the journal Science . The paper is titled “Amidination of ligands for chemical and field-effect passivation stabilizes perovskite solar cells.” Dr. Tim Sandle is Digital Journal's Editor-at-Large for science news.Tim specializes in science, technology, environmental, business, and health journalism. He is additionally a practising microbiologist; and an author. He is also interested in history, politics and current affairs.

Kamala Harris could already have an opponent if she runs for Governor of California: 'I would destroy her' Caitlyn Jenner is mulling a bid for governor of California as a Republican Sign up for the latest with DailyMail.com's U.S. politics newsletter By SARAH EWALL-WICE, SENIOR U.S. POLITICAL REPORTER FOR DAILYMAIL.COM IN WASHINGTON, DC Published: 21:46, 25 November 2024 | Updated: 21:48, 25 November 2024 e-mail 3 View comments As Vice President Kamala Harris considers her next move after her brutal presidential election defeat, she could face a well-known opponent should she run for governor. The defeated Democratic presidential nominee is reportedly mulling a bid for governor in her home state of California as she prepares to leave office in January. Democratic Governor Gavin Newsom is term-limited, so the governor seat will be open in 2026. But celebrity Caitlyn Jenner , a well-known Trump supporter, is also hinting at a bid for governor. 'If I ran, and it was ultimately against Harris, I would destroy her,' the transgender former Olympian wrote on X. Jenner previously ran for governor as a Republican replacement in the recall election against Newsom in 2021, but she received just one percent of the vote. But lately, Jenner has been dropping hints she will run again in the regular 2026 election for governor. Reality TV star Caitlyn Jenner claims if she runs as a Republican against Kamala Harris for governor of California she would 'destroy her' Jenner is a vocal supporter of Trump, who proudly voted for him in the 2024 election despite the president-elect demonizing transgender people as part of his campaign messaging. The reality TV star referred to her last failed bid for governor in a recent post 'Should we do it again? Have been getting a lot of calls with a lot of strong opinions. Newscum is out in 2026.' The day after the presidential election was called for Trump, she posted a picture of her with the president-elect and supporter Elon Musk, writing 'Hope is back in America.' But Jenner's political ambitions and hopes to take on Harris directly would be a long stretch in California, which is a blue state. Caitlyn Jenner speaking at a news conference as she ran in the recall election against Governor Gavin Newsom in 2021. The recall effort failed and Jenner received only 1 percent of support as a replacement Jenner suggesting she would run against Kamala Harris for governor For one, it's not clear Harris will make a play for governor or if she could potentially run for president again in 2028. Advisers and allies said they have been instructed by the vice president to 'keep her options open,' according to Politico. At the same time, winning liberal California statewide is an uphill climb for any Republican candidate. While Trump won the election, Harris won the state by more than 58 percent to Trump's 38 percent with more than 9.1 million votes to the president-elect's 5.9 million votes. But Republicans were able to gain grounds in The Golden State after President Biden won the state by more than 63 percent in 2020 and 11.1 million votes. Jenner has been a vocal supporter of Trump and posted this image of her with the president-elect and Elon Musk one day after his 2024 election victory Jenner noted the state has shifted more red in the most recent election. When it was pointed out that she could not win the recall election, the 75-year-old acknowledged the challenge. Recalls are quite different. Times are also quite different. But ofc point taken,' she wrote on X. But she is keeping followers on social media guessing writing on Monday in response to reports she is considering it 'MAKE CA GREAT AGAIN!' Politics Share or comment on this article: Kamala Harris could already have an opponent if she runs for Governor of California: 'I would destroy her' e-mail Add commentSAG Awards Predictions: ‘Wicked’ and ‘Saturday Night’ Lead Ensemble Race; Why Ceremony Should Add Categories for Supporting TV Performers

Indigenous boy donating hair to cancer patients, raising money for Kemptville hospital

HIGH POINT, N.C. (AP) — D'Maurian Williams scored 18 points as High Point beat Pfeiffer 81-50 on Saturday. Williams went 8 of 13 from the field (2 for 3 from 3-point range) for the Panthers (8-1). Kezza Giffa scored 14 points, going 3 of 8 from the floor, including 1 for 3 from 3-point range, and 7 for 8 from the line. Kimani Hamilton shot 4 for 8, including 1 for 3 from beyond the arc to finish with 11 points. Javascript is required for you to be able to read premium content. Please enable it in your browser settings.

Mbappé scores as Madrid moves closer to Barcelona in Spanish league ahead of tough test at Liverpool

NoneMLAs from Udupi will meet CM before legislature session: Minister

House contempt power under scrutinyAaron Rodgers explains why decision on New York Jets future is likely to be delayed