摘要：女人我最大...

奋斗

New COVID Sub-Variant BA 2.75 Detected in India, WHO Says_我的网站

小遥17岁

A | IT之家 7 月 22 日消息，据《芯势产业深谈》上周消息，复旦博士赵新就中国芯片问题与中芯国际联合创始人谢志峰博士展开对话，谢志峰指出，目的最重要，手段不重要。 The World Health Organization (WHO) has revealed that the new BA.2.75 sub-lineage of the Omicron variant of COVID has been detected in India.,"In Europe and America, BA.4 and BA.5 are driving waves. In countries like India, a new sub-lineage of BA.2.75 has also been detected, which we're following," WHO Director-General Tedros Adhanom Ghebreyesus said at a press briefing on Wednesday.,He said that new COVID cases reported worldwide have spiked by nearly 30 percent.,Experts say the BA.2.75 variant includes new mutations in the spike protein, in addition to mutations that are already present in the Omicron variant.,This allows it to evade several antibodies and can infect people who have been vaccinated or infected previously. The detection of BA.2.75 has led scientists across the globe to dive deep into the research to learn more about the new variant and the possibility of another COVID wave.,In India, the BA.5 sub-variant has been detected in the states of Tamil Nadu, Karnataka, West Bengal, Maharashtra, Telangana, Delhi, Haryana, Gujarat, and the Ladakh union territory as well.,WHO Chief Scientist Soumya Swaminathan said in a video posted on Twitter that there has been an emergence of a sub-variant called the BA.2.75, "first reported from India and then from about 10 other countries.",Swaminathan said there are still limited sequences available of the sub-variant to analyze, "but this sub-variant seems to have a few mutations on the receptor-binding domain of the spike protein. So obviously, that's a key part of the virus that attaches itself to the human receptor.","So we have to watch that. It's still too early to know if this sub-variant has properties of additional immune evasion or indeed of being more clinically severe. We don't know that," she added.,Last week, Dr. Shay Fleishon, an Israeli scientist, claimed that a new coronavirus variant had hit 10 Indian states and sparked concerns of a fourth wave of the COVID-19 pandemic.,The current daily positive test rate is, however, is around 4.32 percent, down from around 16-17 percent in January 2022, the peak of the first Omicron wave.。在国产 EUV 没有之前，我们还是有过渡办法的。谢志峰表示，在逻辑芯片（CPU GPU 等）领域，中国目前还处于 7nm 5nm 水平，但是中芯国际的技术命名并不是 7nm 5nm，而是从 14nm 开始，之后叫 N+1、N+2、N+3。谢志峰认为，从赶超的角度来说，我们只要达到等效的一个性能，你叫它 5nm、2nm、1.8nm 根本不重要。关键就是系统性能可以达到这个水平，那么怎么去做呢，你可以用三维堆叠的方法，华为韬定律就是讲全面地在芯片级别、封装级别、系统级别减少延迟。谢志峰还称，目的最重要，手段不重要，最后做成芯片客户满意，目的达到就 OK 了。他觉得中国还是非常有希望的，中国工程师足够聪明，能够在我们现有的资源下达到同样的目的。 IT之家注意到，在谈到中芯国际的多重曝光技术 DUV 时，谢志峰表示，多重曝光技术并不是今天才发明的，很多年前就有了。但是随着新技术的光刻机出来，DUV 的多重曝光就显得没有必要。一旦设备停掉了，比如 EUV 买不到了，这时候就可以继续沿用 DUV 的多重曝光技术。谢志峰认为，DUV 的多重曝光技术能够生产出同样性能的芯片，7nm 甚至 5nm，但还是有很多缺点，比如制造流程变长、成本增加很多倍，不太适合大规模生产，作为一种小批量生产是可以的。谢志峰还指出，芯片行业存在一个误区，认为制程工艺越先进芯片就越好。