电磁血流计由一对电极a和b以及磁极N和S构成，磁极间的磁场是均匀的。使用时，两电极a、b均与血管壁接触，两触点的连线、磁场方向和血流速度方向两两垂直，如图所示。由于血液中的正负离子随血流一起在磁场中运动，电极a、b之间会有微小电势差。在达到平衡时，血管内部的电场可看作是匀强电场，血液中的...
Sept. 11: How Much Is Too Much? How Much Is Too Little?
18 more IMDb.com, Inc. takes no responsibility for the content or accuracy of the above news articles, Tweets, or blog posts. This content is published for the entertainment of our users only. The news articles, Tweets, and blog posts do not represent IMDb's opinions nor can we guarantee...
pgvectoris a PostgreSQL extension that allows you to store, query, and index vectors. Postgres does not have native vector capabilities as of Postgres 16, and pgvector is designed to fill this gap. You can store your vector data with the rest of your data in Postgres, do a vector similar...
This makes it much quicker to spin up and deploy Postgres anywhere you need it. Containerization also separates your data from your database application. Should your application fail, it’s easy to launch another container while shielding your data from harm. This is simpler than installing ...
where the amount of electricity generated is more or less uniform through time,” says Heta Gandhi, a PhD student at the University of Rochester who has studied how vehicle-to-grid charging can benefit both the grid and drivers. “It depends on how much wind we have, or how much sun we...
This allows customers to monitor how much they are spending on DBaaS resources and helps them manage their budget more effectively, especially when negotiating volume purchases with cloud providers. 2. CDO Account DBaaS: An example is Mongo Atlas, which operates from the service provide...
( pg ), for example. while the s&p 500 isn't designed to beat the broader stock market, it is built to match it, and that's enough for investors who understand that stocks are among the highest-performing asset classes wall street can offer. all told, there was approximately $2.2 ...
In a situation when the ROE is negative because of negative shareholder equity, the higher the negative ROE, the better. This is so because it would mean profits are that much higher, indicating possible long-term financial viability for the company. ...
but recent research has emphasized the much wider role hydrogen could play as a decarbonization tool across various sectors,while also linking different parts of the transitioning energy chain.This presents both a potential threat to gas and an opportunity,depending on how hydrogen is produced and ...