Encountered LCD screen stencil how to do?

1. Check whether the connection between the LCD splicing screen and the graphics card is loose. Poor contact can cause "clutter" or "noise"-like flower screens to be the most common phenomenon.

2, check whether the video card is overclocked. If the video card is over-used excessively, irregular and intermittent stripes will appear. At this time, the frequency of overclocking should be appropriately reduced. Note that we must first reduce the memory frequency.

3, check the quality of the video card. If the video card appears after the replacement of the video card, and after the first and second strokes fail to work, check whether the anti-electromagnetic interference (EMI) and the quality of the electromagnetic shielding of the video card are over. The specific method is: Place some components that may produce electromagnetic interference away from the video card installation (such as hard disk) as far as possible, and then see if the video screen disappears. If it is determined that the electromagnetic shielding function of the graphics card is off, the graphics card or the self-made shielding cover should be replaced.

4. Check whether the resolution or refresh rate of the LCD splicing screen is set too high. LCD splicing screen resolution is generally lower than the crt display, if more than the manufacturer's recommended optimal resolution, there may be Huaping phenomenon.

5. Check if an incompatible graphics driver is installed. This situation is generally easy to ignore, because the graphics card driver update faster and faster (especially nvidia video card), some users can not wait to install the latest version of the driver. In fact, some of the latest drivers are either test versions or versions that are optimized for a particular graphics card or game. Using such drivers can sometimes lead to the appearance of flower screens. Therefore, it is recommended that you use Microsoft-certified drivers as much as possible. It is best to use drivers provided by the graphics card manufacturers.

If you can't solve the problem after using the above five strokes, you may have problems with the quality of the LCD splicing screen. At this point, replace the other monitor for testing.

What are food additives?

Substances that are added to food to maintain or improve the safety, freshness, taste, texture, or appearance of food are known as food additives. Some food additives have been in use for centuries for preservation – such as salt (in meats such as bacon or dried fish), sugar (in marmalade), or sulfur dioxide (in wine).

Many different food additives have been developed over time to meet the needs of food production, as making food on a large scale is very different from making them on a small scale at home. Additives are needed to ensure processed food remains safe and in good condition throughout its journey from factories or industrial kitchens, during transportation to warehouses and shops, and finally to consumers.

The use of food additives is only justified when their use has a technological need, does not mislead consumers, and serves a well-defined technological function, such as to preserve the nutritional quality of the food or enhance the stability of the food.

Food additives can be derived from plants, animals, or minerals, or they can be synthetic. They are added intentionally to food to perform certain technological purposes which consumers often take for granted. There are several thousand food additives used, all of which are designed to do a specific job in making food safer or more appealing. WHO, together with FAO, groups food additives into 3 broad categories based on their function.

Flavouring agents
Flavouring agents – which are added to food to improve aroma or taste – make up the greatest number of additives used in foods. There are hundreds of varieties of flavourings used in a wide variety of foods, from confectionery and soft drinks to cereal, cake, and yoghurt. Natural flavouring agents include nut, fruit and spice blends, as well as those derived from vegetables and wine. In addition, there are flavourings that imitate natural flavours.

Enzyme preparations
Enzyme preparations are a type of additive that may or may not end up in the final food product. Enzymes are naturally-occurring proteins that boost biochemical reactions by breaking down larger molecules into their smaller building blocks. They can be obtained by extraction from plants or animal products or from micro-organisms such as bacteria and are used as alternatives to chemical-based technology. They are mainly used in baking (to improve the dough), for manufacturing fruit juices (to increase yields), in wine making and brewing (to improve fermentation), as well as in cheese manufacturing (to improve curd formation).

Other additives
Other food additives are used for a variety of reasons, such as preservation, colouring, and sweetening. They are added when food is prepared, packaged, transported, or stored, and they eventually become a component of the food.

Preservatives can slow decomposition caused by mould, air, bacteria, or yeast. In addition to maintaining the quality of the food, preservatives help control contamination that can cause foodborne illness, including life-threatening botulism.

Colouring is added to food to replace colours lost during preparation, or to make food look more attractive.

Non-sugar sweeteners are often used as an alternative to sugar because they contribute fewer or no calories when added to food.

What are feed additives?

According to the European Commission's commonly accepted definition,

Feed additives are products used in animal nutrition for purposes of improving the quality of feed and the quality of food from animal origin, or to improve the animals` performance and health, e.g. providing enhanced digestibility of the feed materials."

You thought that animals ate plants, or grass or some other `food` natural to their ilk. But in reality, in today`s factory farms, feeding livestock is a complicated endeavor fraught with controversy and split opinions.

According to a 2010 report by MarketsandMarkets, a market research company, the global feed additives market is expected to reach $18.7 billion by 2016. That`s no small industry.

There are four general types of feed additives:

- Sensory Additives – these stimulate an animals appetite so that they naturally want to eat more.

- Nutritional Additives – these provide a particular nutrient that may be deficient in an animal`s diet.

- Zootechnical Additive – these improve the overall nutritional value of an animal`s diet through additives in the feed.

- Coccidiostats and Histomonostats – these are feed additives which are antibiotics, intended to kill or inhibit protozoa (bacteria/micro-organisms). These have been banned in Europe since 2009 and replaced with probiotic alternatives.