Химики СПбГУ создали простой спектрофотометр на основе напечатанной люминесцирующей кюветы
Ученые Санкт‑Петербургского государственного университета разработали компактное устройство для количественного анализа образцов — «спектрофотометр в кювете». Для этого они модифицировали полимер для 3D‑печати с помощью люминесцентных молекул и создали кювету для образца, которая одновременно служит и источником света. При таком подходе для быстрого определения содержания вещества в растворе помимо кюветы потребуются только фонарик и камера телефона. Подход уже показал свою эффективность при анализе модельных и реальных образцов.
Химики СПбГУ создали простой спектрофотометр на основе напечатанной люминесцирующей кюветы
Ученые Санкт‑Петербургского государственного университета разработали компактное устройство для количественного анализа образцов — «спектрофотометр в кювете». Для этого они модифицировали полимер для 3D‑печати с помощью люминесцентных молекул и создали кювету для образца, которая одновременно служит и источником света. При таком подходе для быстрого определения содержания вещества в растворе помимо кюветы потребуются только фонарик и камера телефона. Подход уже показал свою эффективность при анализе модельных и реальных образцов.
"There are several million Russians who can lift their head up from propaganda and try to look for other sources, and I'd say that most look for it on Telegram," he said. The War on Fakes channel has repeatedly attempted to push conspiracies that footage from Ukraine is somehow being falsified. One post on the channel from February 24 claimed without evidence that a widely viewed photo of a Ukrainian woman injured in an airstrike in the city of Chuhuiv was doctored and that the woman was seen in a different photo days later without injuries. The post, which has over 600,000 views, also baselessly claimed that the woman's blood was actually makeup or grape juice. If you initiate a Secret Chat, however, then these communications are end-to-end encrypted and are tied to the device you are using. That means it’s less convenient to access them across multiple platforms, but you are at far less risk of snooping. Back in the day, Secret Chats received some praise from the EFF, but the fact that its standard system isn’t as secure earned it some criticism. If you’re looking for something that is considered more reliable by privacy advocates, then Signal is the EFF’s preferred platform, although that too is not without some caveats. Following this, Sebi, in an order passed in January 2022, established that the administrators of a Telegram channel having a large subscriber base enticed the subscribers to act upon recommendations that were circulated by those administrators on the channel, leading to significant price and volume impact in various scrips. The news also helped traders look past another report showing decades-high inflation and shake off some of the volatility from recent sessions. The Bureau of Labor Statistics' February Consumer Price Index (CPI) this week showed another surge in prices even before Russia escalated its attacks in Ukraine. The headline CPI — soaring 7.9% over last year — underscored the sticky inflationary pressures reverberating across the U.S. economy, with everything from groceries to rents and airline fares getting more expensive for everyday consumers.
from vn
