新冠病毒会不会像非典一样突然消失呢?

庄有猫,日本北海道大学硕士/ 丁香医生签约作者
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昨天,在白宫谈及尚未被研发出的新冠病毒疫苗时,特朗普说「没有疫苗,新冠病毒也将消失」。一种病毒自行消失,这并不是不可能。举个例子,SARS 过去 17 年了,至今为止也没有特效药和疫苗上市,但是 SARS 就是在 2003 年的初夏突然消失的。在讲一种病毒是否会消失之前,我们需要先了解传染病的本质。无论是什么病毒还是细菌,传染病的三要素是传播源(Source)、传播途径(Transmission)和易感人群(Susceptible Pe…

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日漫里的小钢珠到底是什么?

艾菲趣日本,日本文化.动漫.艺术.旅行
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写在前面,大小轻重,无论何种形式的成瘾,都是一件值得警惕的事。日本有一种店,每次路过这些店都能听到那异常喧嚣的噪音,透过玻璃缝还能看见一排大爷大妈的脚,这就是玩小钢珠的店铺。小钢珠【パチンコ】是一种游戏玩法,它对于游客来说可能有点陌生,但是如果你留意,会发现这种店铺在当地简直是遍地开花,门店规模大小不尽相同,尤其会出现在商店街上,堪称标配。那么它到底是什么,又有什么特殊的吸引力搞得这人魂不守舍不要命的去玩呢?今天我们就来聊一聊这颗让人又爱又恨的…

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Euro Forecast: How Low Can EUR/USD Go?

EUR/USD has fallen steeply on a bearish German court ruling and some dire economic forecasts from the European Commission. The question for the week ahead is whether all the bad news is now priced in.

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How To Trade with Fibonacci Retracements?

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Should Sentiment Trades Be Held Over Night?

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Trading the Trend – two stakebuilder ideas

The market sold off this week only to rally into the close. When an instrument prints near the high of the day at the close, this tells me two things. Firstly, the market is bullish (at this moment). And secondly, those holding long positions are bulli…

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Dollar Retreats After Recovering From Early Fall

The U.S. dollar recovered a bit Friday morning after data showed a slightly smaller than expected drop in U.S. employment in the month of April, although the fall was quite steep and the biggest in several decades.

However, the dollar’s recovery prov…

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Treasuries Come Under Pressure After Early Volatility

Treasuries showed a lack of direction in morning trading on Friday before coming under pressure over the course of the afternoon.

Bond prices slid more firmly into negative territory after spending the morning bouncing back and forth across the uncha…

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Oil Futures End Notably Higher For The Day, Gain Over 25% In Week

Crude oil prices moved up sharply on Friday amid slight improvement in demand for petroleum products.

With several countries easing lockdown restrictions and reopening some crucial businesses, it is widely expected that the demand for energy will gra…

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Gold Settles Lower For The Session, Posts Modest Gain In Week

Gold prices drifted lower on Friday, despite data showing U.S. unemployment to have plunged to a historic low in April.

The dollar’s weakness limited gold’s downside. The dollar index, which dropped to 99.46 around mid-morning, edged up slightly afte…

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用勺子挖掉一块脑组织会失去意识吗?

赵浪,眼望星空,脚踏实地
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1-2cm 的损伤范围,只有脑干会导致昏迷或者死亡。尤其是中脑的网状系统,很容易持续昏迷。而整个颅内最危险的是延髓闩部,是呼吸循环中枢,大概就几个毫米,一旦损伤可以直接心跳呼吸停掉死亡。丘脑基底节区 2cm 范围一般也只能偏瘫。基底节区脑出血的手术指征是 30ml,也就是直径 4cm 的球体。临床上这么大的血肿一般不会昏迷。还有一个比较妖的地方就是下丘脑,也不大。损伤后虽然不直接导致死亡,但是水电解质紊乱和体温调节紊乱可以让人昏迷死亡。至于大脑,最多可以切掉…

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