At this stage, Beijing is in the epidemic flu season, have you noticed more and more squirting buddies around? The mask is a natural barrier to maintain the respiratory tract and can reasonably prevent diseases. But wearing a mask looks easy, but in fact, there is a lot of knowledge. Take the most common disposable masks, very thin masks actually have two sides, you can tell which side should be rushed in, which side against the outside? Today, we asked the head technician of the Beijing CDC Infectious Diseases Endemic Disease Manipulation Institute, Shi Wei Xian, to introduce to the group the big questions of wearing a mask.

Mask type multi-selected questions compared to choose expensive more critical

Shi Wei Xian details, the mask can give full play to the maximum legal effect, the focus is on the one hand need to see the mask selected right, and then on the one hand mask wear way Right. The guideline for everyone to select a mask is the "sufficient but" standard. How to choose a mask under different conditions? There are various types of masks on the sales market, and they are divided into three categories based on different materials and filtration efficiency.

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Cotton masks are a kind of foot-operated over-consideration masks, which give full play to the over-consideration efficacy according to the layer-by-layer isolation of pure cotton cloth. Cotton masks have the least filtration efficiency, and only fine particles as thick as a hair have some actual effect of blocking, but their breathability and comfort are the best. In the cold winter, when it is cold to go out and have a runny nose, cotton masks are the best choice for better protection against cold and warmth.

Disposable masks are made of non-proof cloth as the key material, and the actual effect is a little higher than cotton masks. When you have a fever and a cold, rush to the hospital, the best choice at this time is this type of disposable medical mask. Disposable medical masks are splash-proof, and there are many atmospheric aerosols of respiratory patients suspended in the air when you go to the hospital, so it is best to wear disposable medical masks for self-protection or to prevent infection. In addition, spring is in full swing, willow flakes are flying all over the sky, allergic rhinitis along with "self-driving". This time, or pick disposable masks. Shi Wei first detailed, for the very fine fine particles, disposable masks safety protection actual effect is not as good as the protective masks. But for very large fine particles, such as anti-smoke, bee pollen, flutter, enough.

Protective masks are the most efficient protective masks. The protective power is high, but at the same time the breathability and water absorption of the mask also decreases, which means that its wearing comfort is reduced, and the wearing time should not be too long. The N95 mask is a common protective mask for everyone, and even if the particle diameter is below 0.3μm, the actual effect can be more than 95%.

The mask "out of the air ventilation" role discount

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Shi Wei first prompted the guys, according to the main use of the right mask is the first step. Below, if the mask is worn wrong, the actual effect will be very much affected. The most important thing is to ensure the seal when wearing the mask, which needs to pick the right model specifications for itself. For example, for children and teenagers, it is good to apply child and teenager type masks that are compatible with different age groups and facial sizes.

When disposable medical masks are worn, the folding surface should be thoroughly carried out, and the mouth, nose and jaws should be thoroughly wrapped up, followed by a tight nasal bridge, so that the mask and the face are thoroughly catered for. Also need to pay attention to the disposable mask has the difference between inside and outside, the light-colored face has moisture-absorbing effect, should be close to the mouth and nose, dark brown face outside.

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Finally teach the guys a small way to check the seal of the mask . Shi Wei first detailed, to test whether the mask is tightly closed with your face, the way very simple, a deep breath, and then quickly blow two breaths, you can find your nose side, mouth side is not leakage of steam.

In addition, we must also remind everyone to pay attention to the first hand washing and disinfection, and then wear a mask. After wearing the mask, you do not have to touch the mask as much as possible. If you must touch it, you need to remember to wash your hands and disinfect it before and after touching it. When removing the mask, do not touch the sides of the mask as much as possible, and remember to wash and disinfect the mask immediately after removing it. Disposable medical masks should not be reused as many times as possible. Once the mask is broken or dirty, it must be immediately removed and replaced with a new mask.

Posted by: lshtares at 09:18 AM | Comments (1) | Add Comment
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1、轉配股

是我國股票市場特有的產物。國有股、法人股持有人放棄配股權，溢價將配股權轉讓給其他法人或者社會公眾。

2、認股權

證由上市企業公司通過發行，給予學生持有權證的投資者在未來發展某個時間或某一段時間以事先進行確認的價格可以購買一定量該公司對於股票的權利。其實質是一種可以買入股票期權。

3、備兌權證

也給予持有者以某一特定產品價格進行購買具有某種股票的權利，但和一般的認股權證不同，備兌權證由上市管理公司發展以外的第三者發行，發行人通常我們都是一個資信卓著的金融服務機構。

4、績優股績

優股就是企業業績優良傳統公司的股票，但對於績優股的定義以及國內外卻有所了解不同。在中國，每股稅後利潤和收益閥是投資者衡量股票表現的主要指標。一般而言，每股稅後利潤在全體上市公司中處於中上列，淨資產收益率連續三年超過10%的股票就屬於績優股。

5、垃圾股：

垃圾股指的是業績較差的公司的股票。其中一些公司甚至因為行業前景不佳或管理不善而虧損。其股票在市場表現低迷，股價低，交易不活躍，年終分紅也差。

6、A股

B股A股的正式名稱是人民幣特種股票。它是由我國境內公司發行，供境內機構、組織或個人(不含台灣、香港、澳門投資者)以人民幣認購和交易的普通股股票。

7、B股

B股，即人民幣特種股票，是以人民幣標明面值，以外幣認購和買賣，在上海和深圳兩個證券交易所上市交易的股票。它的投資人限於：外國的自然人、法人和社會其他企業組織，香港、澳門、台灣發展地區的自然人、法人和一些其他國家組織，定居在國外的中國作為公民。中國證監會相關規定的其他企業投資人。

8、H股、N股、s股

H股是指注冊地在我國內地、上市地在香港的外資股。香港的英文是Hong Kong，取其字首，在香港上市外資股就稱為H股。依此進行類推，紐約的第一個使用英文學習字母是N，新加坡的第一個就是英文字母是S紐約和新加坡公司上市的股票就分別可以叫做N股和s股。

9、國有股

國有股是指國有資產代表同一投資部門或者同一投資機構投資於公司而形成的股份。包括由公司現有國有資產轉換而成的股份。由於目前我國對於大部分股份制管理企業發展都是由原國有大中型企業通過改制而來的，岡此，國有股在公司股僅中占有較大的比重。

10、法人股

法人股指企業對於法人或具有中國法人資格的事業建設單位和社會主義團體以其依法可經營的資產向公司非卜中流通股權結構部分國家投資所形成的股份。

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