ARTICLE'S
        


_________________________________________________________________________________________________________________________________________ ஜ۩۞۩ஜஜ۩۞۩ஜஜ۩۞۩ஜஜ۩۞۩ஜஜ۩۞۩ஜஜ۩۞۩ஜஜ۩۞۩ஜஜ۩۞۩ஜஜ۩۞۩ஜஜ۩۞۩ஜஜ۩۞۩ஜஜ۩۞۩ஜஜ۩۞۩ஜஜ۩۞۩ஜஜ۩۞۩ஜஜ۩۞۩ஜஜ۩۞۩ஜஜ
 
Tampilkan postingan dengan label Knowledge. Tampilkan semua postingan
Tampilkan postingan dengan label Knowledge. Tampilkan semua postingan

Jumat, 29 Maret 2013

Unique General Knowledge

0 komentar

Why is milk good for the body??
Milk is a drink which is perfect because we can live only with milk without eating anything. Milk contains all the nutrients the body needs, such as proteins, carbohydrates, fats, calcium, phosphorus, iron, and vitamins. The food is another perfect egg.

Is it true there strawberries in strawberry flavored milk??
Fruits which has the highest content of vitamin C are strawberries. The composition is 80 mg per 100 g strawberries. Total vitamin Cnya two times more than oranges. When you eat 5-6 per day, the same thing has been meeting the needs of vitamin C per day (50 mg). Better yet, if eaten with milk or cream. Milk or cream relieves sour strawberry, and meet nutrient lacking in strawberries, the fat and protein.

Why are hard cooked rice is high in the area??
The air pressure in the lower mountains than in the lowlands so boiled water before the temperature reaches 100 degrees Celsius. Therefore, the rice cooked in the mountains because the water will be less mature mature first. For that, you should put a heavy object on the lid of the pot when cooking on the mountain in order to increase the air pressure inside the pan and prevent moisture out.

Why when boiled shrimp, the color change??
Skin pigment astaxanthin in shrimp, lobster, crab united with the protein. If the animal type of crustacean is heated, proteins and astaxanthin are separated so that the skin showed pink, natural color astaxanthin.

Why do we hiccup when eating chili??
The diaphragm is a partition between the chest and abdominal cavity, below the lungs. Hiccups are caused by the vibration of the sound when the stomach enlarged diaphragm. Hiccups can be caused by spicy foods or hot-eaten as time breathing. The way to stop it is to hold your breath or surprised, can also inhale water ice or carbon dioxide in plastics that have been blown.

What is the difference Fruits and Vegetables??
In terms of the wider community, the plant type and yield of fruit trees called soft stemmed plants called vegetables. Examples of fruits are apples, mango, guava, and others. Examples of vegetables are tomatoes, strawberries, pineapple, peppers, eggplants, cucumbers, and so on.

In general, fruit is fleshy, sweet, fragrant and juicy, while the vegetables are grown in the fields for edible roots, stems, and leaves. But in terms of botany / biology, an organ of the fruit of flowering plants that are further modified ovary (ovarian). So, in this sense, tomatoes, peppers, corn, rice including fruit.

HEALTH
Why Teeth can decay if too many sweets??
The main cause of tooth decay is the leftovers. The rest of the sweet foods will continue to stick to the teeth and it is food for germs. Therefore, it is better to avoid eating too many sweets.

Why not better eat charred meat??
Cooking with fire chemically modify proteins. In this process, will form cancer-causing substances, "benzopiren" in some of the food, especially the already charred. In the exhaust gas, smoke factory chimneys, and smoke was discovered benzopiren.

Why drugs should be taken after 30 minutes??
The purpose of the prescription the doctor "take the medicine 30 minutes after eating" is a suitable time to take medication. This reduces the stimulation of the drug on the mucous membrane, and the food is being digested will not reduce the effect of the drug while protecting the mucous membranes of the digestive organs.

There is a difference of some drugs, especially drug fever, pain relievers, blood booster, which must be taken in order to reduce the blockage in the intestinal tract.

Why not either Running after every meal??
The spleen is part of the intestine that lies deeper than the stomach and liver, is between the diaphragm and the left kidney. The spleen produces lymph nodes that serve to break down old blood cells. When the body needs more blood submission, the spleen will shrink while removing it.

However, when the stomach or liver blood needed to digest food, and during that time we exercise, the spleen had to send blood to the ototpada time. If so, it would be too puckered spleen causing pain.

Why so bruised body when hitting a hard object??
Bruising occurs due to bleeding under the skin layer. If you experience bruising, bleeding occurs in frozen capillaries and around the veins located in the skin or tissues hypodermic. When a black eye, rub section with eggs because it can increase blood circulation eliminate darahdan frozen. Eggs are often used because of its size that fit to be grasped.

Why is injected in the buttocks??
Injections in the ass that we usually experience is the muscle injection. Because the muscles are full of blood vessels, fast cure liquid inside. Muscular injections are usually done in the hand or on the buttocks. However, because many memilikilebih butt muscles, the doctor or nurse is usually injected in the butt.

Why if it was hit, our brains can go wrong??
Our brains are very weak, but has a perfect protection system. The brain is protected by the skull and meninges, and strong enough to withstand impact due to lymph nodes.

However, brain cells can die from lack of oxygen that is inhaled. Number since birth is 1300 and continue to die without reproducing. Although this may not be the brain cells die from being hit a little bit, but we still have to be careful.

How to awaken the unconscious
If there is a faint, lay people and loosen her clothes. Straighten your head and raise your legs a bit. Usually 2-3 minutes and then he would wake up. If not sober too, let him smell ammonia or wash her face with a towel soaked in ice water.

Although already aware, better left first for 20-30 minutes. If breathing is not normal, it is possible central nervous disturbed. Quick penggilkan doctor.

Why Vitamin C taste sour??
Vitamin supplements we used to drink must also contain a vitaim C. The official name of vitamin C is ascorbic acid. and from its name, we can know the taste sour. Vitamin C is water soluble and will come out with urine, it is better kerna consumed before bed.

Really would be stupid if too often drink coffee??
If you drink coffee in moderation, the brain will be stimulated to improve digestion and blood circulation. So if drinking coffee on sleepy or tired, the head will feel lighter and concentration power increases. But because coffee slow time for the brain to receive new information, we will feel the brain becomes sluggish.

Moreover, the speed of the body to destroy the caffeine in older children than adults. Therefore, it is better to avoid children. According to research, when children drink coffee with cola and chocolate, kemampan learning will decrease.

Our Bodies
Really angry when we can not digest food properly??
Some of the organ and its function in the human body is controlled by the "Nerves Not Aware", such as heart rate, breathing, digestion, and others. When we eat, the stomach will automatically mengeluarkangetah stomach to digest food through the small intestine and the body will absorb the nutrients. This is the function of nerve unconscious.

But if we are angry, anxious, or experiencing other negative feelings, then it will be difficult to stomach sap exit normally. Inilahyang circumstances result in stomach ulcers or indigestion. So, when we were eating, we must keep our emotions calm. That way your body will be able to digest and absorb the nutrients that enter through the food properly.

Why do we rang stomach when hungry??
The sound produced when the hungry stomach is actually a sound that comes from the stomach and intestines. By the time we breathe, there is air swallowed into the stomach. Moreover after digesting a meal, intestinal gas is produced.

Currently, that is when the food is finished digested, the stomach continues to react and cause major brain produces feelings of hunger. these gases swirling in the stomach, and a sound-krucuk krucuk!

Why do we carsick??
As I rode cars, boats. aircraft and other transportation equipment, some people will feel carsick, seasick, even airsickness. For example, feeling sick, like vomiting, no appetite, anxious to sleep, sweating, and so forth. However, carsick is not a disease, it is caused by the body that rocked irregular.

This results in the center of oscillation of the body balance system in the inner ear was not able to function properly so that the brain reacts in the form of the head dizzy and dizzy eyes, and some symptoms of hangover that was mentioned above. Provided a brief rest, we will feel much better.

Why do we shake hands when walking??
While walking, our hands will swing forward and backward. It is an instinct, just like a new born child spangle, though not taught, it can run itself. Even a child who is just learning to walk would be shaking his hand. This is done to balance the body when walking!

Why do we wink??
Outer surface of the eye is covered by a layer of tears. The tear layer not only serves to lubricate the eye, but also to clean the dust ang into the eye. Wink can cause tears in the surface of the eyeball.

People generally winked 20 times per minute. However, when we watch television or play computer for a long time, we will be less wink. Our eyes are so dry and uncomfortable. So, when we are very old wearing sunglasses, 50 minutes or so we had to turn a blind eye to mengistirahatkannya.

If you get tired Sprue Why??
Swelling of the mucous membranes in the mouth called thrush. The cause is a virus or germs, malnutrition, immune system decline, keteganga with emotion and stress. Thrush is particularly true in the mucous membranes in the mouth and on the tip of the tongue. It could even happen because of injuries caused by the end of the toothbrush. Therefore, be careful when brushing your teeth too.

Why get nosebleeds when too Tired??
When the body is tired, the liver becomes hot. Heat is ushered to the upper body, so it bleeds. When a nosebleed, do not bend the head back because you could choke to death. Better tilt the body in the back of the head and point forward. Then put the cotton into the nostrils. Press hard part ends with two fingers. Within 5-6 minutes later, the blood will stop. If it does not work, see your doctor.

ENVIRONMENT
How to distinguish the eggs are cooked and raw eggs??
When the egg is cooked and is still raw echoed into one, we can not tell just by looking at it or touch it! The trick is very simple. We just need to play it like an egg twist tops!

Because it's a solid, egg that has been boiled, it is very easy to spin. Conversely, because the inside is still liquid, raw eggs will continue to move so it is difficult to rotate the balance.

Germs Is it so important??
Most people think harmful germs, but germs actually have a very important role in nature. Germs can decipher the plants and animals that have died, could also change the nitrogen in the air into a variety of nutrients for living things.

In addition, foods such as pickles, kaju, beer, and yogurt is a food made from the fermentation process. Even in the human gut also contained bacteria to help digest food!

Is a new dress can be directly used??
Newly purchased clothes better not be directly used. That's because the manufacture of clothing terkadan using dyes or chemical drugs to strengthen the color of your dress, give antitoxin, and antikusut. So if sejenismintak smell on clothes bar, it is the aroma of chemical drugs.

Drugs that are attached to the shirt is harmful to health. Especially when in direct contact with the skin will easily cause penyakitkulit or cough, inflammation of the eyes, and other diseases. So, if you buy clothes to be washed before use, yes. It would be better for your health!

Why splashed water if exposed to hot oil??
When heated to 100 degrees Celsius, the water will boil boil. Water is a liquid yangtadinya barubah forms will also be a "vapor" which is a gas. When the water droplets into the hot oil heat reaches 160-200 degrees Celsius, water would instantly change from liquid to gas form and splashed. While it seems like a splash of oil, in fact, that splashed airlah.

Do not microwave food char??
Microwave will not make food burn because it uses microwaves from electromagnetic waves to heat and maintain the content of the food. Once the supply of microwave energy to the food molecules that are inside and outside of the food would vibrate due to the suction energy.

In this process, every second of the molecules will vibrate as much as 2 billion 450 million times. Consequently, the molecular friction produces heat and then go and quickly heats food. But in this process such as heating, water content in foods will slowly diminish. Therefore, the longer it is in the microwave, food will become dry and hard.

Why Chewing Gum is packed with silver paper??
Materials gum wrapper paper is not actually silver, but aluminum foil. To maintain fragrance substances in chewing gum, protects from external conditions such as temperature and humidity, beautify packaging, and hygiene, candy karetdikemas with aluminum foil. If it is packed with plain paper, in hot weather gum is definitely faster melting and sticking to the paper.

How Shark giving birth??
Consists of various shark species. Different species, different forms of the eggs as well. There shark egg shaped and some are spiral shaped pouch. In addition, different species breeding of different ways as well. There are sharks that saves eggs in the uterus. Once cooked, the eggs were broken, and so was born the baby shark. There are sharks lay eggs outside the body, but some are actually giving birth like humans.

Is the fish can hear??
Fish also have ears, but they do not have the bone structure outside, only the deep inner ear bones of the head so we can not see. Actually, the sound moves faster in water than in air. Plus, in addition to the ear, the lateral line on both sides of the fish's body can also react terhadapgetaran sound waves. Thus, compared to humans, fish are more sensitive to noise.

Dinosaur Fossils of the earliest part of which was found??
Mantell was the first person who first discovered dinosaur bones. In 1822 he saw in a stone tucked his wife brought home a very large teeth. Since then he studied day and night and just be sure that it was a plant-eating animals.

One day, she saw teeth that grow in large lizard rahangbawah similar to the tooth. Therefore, he decided to name the teeth "dental big lizard", and show it to the world. Later known, these animals are Iguanodon.

Why Hippos like a dip in the river??
Hippos often soak in water. In addition to protecting the skin, the main reason was because of her weight. By utilizing the buoyancy of water, the movement will be more agile in the water than on land. Interestingly, the newly released sweat hippos initially clear, but after a few minutes turned red. Pigments (dyes) in keringatini can help resist Ultraviolet Hippopotamus, in other words, oil is a natural sunscreen.

CEKIDOOTTZS ..!!

Benefit of Orange Peel

0 komentar
Okay, now I want to discuss about the benefits of Orange, most people only know about the benefits of oranges that just as an addition to vitamin C, but there are many benefits that are contained in Citrus fruits, one of which is the skin.
nah, orange rind turns out to have many benefits to relieve various symptoms. What are the benefits? Let me describe the benefits of orange peel:


1) To prevent motion sickness. One hour before a car, take a piece of fresh orange peel to continue to hold your nose and breathe in the scent of orange peel. After a car ride, keep sipping orange peel oil to prevent motion sickness.


2) Prevent frostbite (cold sore). Burn some orange peel and grind up into powder, mix with vegetable oil and rub into the area which was swollen from the cold weather.


3) Treating bronchitis (inflammation of the gastrointestinal lung) infection. Put 5 to 15 grams of orange peel into a glass, add boiling water to make a glass of "orange peel tea". Drink as much as possible.

4) Treating cough. Put 5 grams of dried tangerine peel into 2 cups of water and boil for 10 to 15 minutes then add some ginger and brown sugar. Drink it while warm.

5) Treat konstipasti (constipation / bowel obstruction). Boil 12 grams of fresh orange peel or 6 grams of dried orange peel with water for 10 to 15 minutes. Drink 2 times a day to prevent constipation (difficult bowel movements).


6) hangover cure (feeling sick in the morning when I wake up after drinking too much). Boil 30 grams of fresh orange peel with water for 15 to 20 minutes, add a little salt and drink.

7) Treating pain molars. Put a small piece of fresh orange peel in your mouth for 10 minutes before you sleep. Stay leave it in until you feel less comfortable.

8) Maintain and treat sensitive teeth. Are your teeth to be sensitive after eating oranges? Put the peel into a glass and add boiling water, cover glass for 5 to 10 minutes then drink.

9) Treating mastitis (breast feels swollen when excess milk production). Boil 30 grams of fresh orange peel and 6 grams of licorice (liquorice) with water. Drink twice a day.

10) Eliminate bad breath. Chewing a small piece of fresh orange peel to eliminate bad breath.


11) Eliminate allergy symptoms after eating fish and crabs. Boil a few pieces of fresh orange peel with water and drink.

12) Stop treating vomiting and abdominal pain. Boil a few pieces of orange peel with fresh ginger with water and drink.

13) Prevent tightness in the chest (shortness of breath). Add boiling water into a glass of fresh orange peel, cover for 10 minutes, and add the sugar before you drink it, he can stop the feeling of tightness in the chest and a sore throat.

14) Treating digestive problems. Soak 50 grams of orange peel with white wine for about 20 days, this is very good for digestion, dizziness and vomiting. If you eat too much fatty food and feeling the heat in, try this way.

15) Eliminate phlegm in the lungs. Soak a piece of orange peel in a white wine for about 20 days and drink, the longer soaked, the better the results.

16) Overcoming cold. Boil some orange peel and fresh ginger in water for about 15 to 20 minutes, add sugar, and drink like tea. This method can treat cold, flu, vomiting and coughing.

17) Restores lack of appetite. Take a fresh orange peel and jemurlah to dry. Combine orange peel with tea leaves. When you're no appetite, add the cooking water into a glass and stir bikinlah "orange peel tea". This way you can restore lost appetite.

18) Treating inflammation of the pancreas. Boil 30 grams 10 grams orange peel and licorice (liquorice) with water.

Senin, 25 Maret 2013

Overclocking

0 komentar

Overclocking is not a official technical term, overclocking is a popular term computer in English. Overclocking consists of 2 main words are "over" and "clock."

"Over" in the English dictionary means "above" or "beyond", while the "clock" states the crystal clock that controls the speed of the processor. Then overclock is to go beyond clock speed.

The complete terms of overclocking the processor means operating the processor at speeds beyond the speed of a standard. If there is then also a term overclock underclock, underclock have a meaning opposite to overclock, the processor operates at a lower speed. There is no benefit to be gained from the underclock, it is certain that there are users who do not underclock the processor computers.

Overclocking is the effort made in order to maximize / increase the speed of computer system performance by increasing the multiplier or bus speed.

By increasing the multiplier or bus speed or both would result in CPU clock speed is higher, the increase in CPU clock speed of the processor, the speed also increases. Besides the need to achieve overclocking a computer system that remains stable and secure in the sense of not crash or hang when used.

The main answer why overclocking done is to get the increased speed of the processor, but there are some more specific reasons, among others:

1. Gaining speed increase system performance computer permanently without charge or at a minimal cost far less when compared to buying a new processor.

2. Limited to just try computer skills.

3. Trying to find out how much improvement is obtained before deciding to replace the processor with higher speeds and the same type. For example overclock Pentium 75MHz to 90MHz before replacing the old processors (Pentium 75MHz) with a 90MHz Pentium true.

4. Extending the life of the old processor in an effort to save costs, before buying a new processor.

5. Extending the life of the processor time while waiting for a new type of processor released / produced.

6. To estimate the ability of the processor to be produced later in the higher speed version, overclock the processor with this purpose is usually performed in a short time and very extreme (very much improved speed).

Overclock is also aimed to determine the maximum (margin) the ability of a processor if the overclock. Achieved speeds of course limited by the capabilities of the processor, motherboard and supporting components. An example is to overclock a Pentium II 233MHz to 333MHz (100MHz increase). Overclock is mostly done by the user and hardware tester who then published on the Internet.

Overclocking is not the best way to get the increased speed of the computer system works, because it is the easiest way to purchase and replace it with a new processor or processor-overdrive. As mentioned above overclocking done to obtain increased performance / overall computer system performance with minimal cost or even no cost at all because it only requires a few configuration changes on the motherboard so that the computer system can operate faster. In other cases require some additional components such as coolant for heat problems.

Why processors can be overclocked?

There must be a reason why a processor can be overclocked. Surely not since the beginning of a processor designed to be overclocked because it is detrimental to the manufacturer.

The cause of the processor can be overclocked processors is because manufacturers to label their products with the word "certified for" not "designed for". This condition allows overclocking done on the processor. "Certified for" states the ability of the processor to operate at those speeds, while "designed for" express specialization processor speed is just for speed.

For example: an Intel Pentium processor by the manufacturer declared "certified for" 166MHz, the processor is a proven and recognized capable of operating at speeds of 166MHz, whereas when the processor manufacturer Intel Pentium declared "designed for" the 166MHz processor is made to operate only on speed of only 166MHz.

High quality standards preferred by the manufacturer before the product is released, is caused by intense competition among PC manufacturers processors, in addition to producing high-quality processor will cause the well to the plant.

Sometimes the processor is made on the same die with the processor die another class that has a higher speed.

For additional information necessary to explain that not every processor manufacturer does as explained below. More specifically the following explanation is based on the fact that occur in the processor manufacturer Intel. The factory always create a design for a processor capable of operating at top speed, after each processor is tested to see if the processor is operating properly at the given speed of the initial specification. If the processor is an indication not operate at 100% speed, the processor is retested at lower speeds, and so forth until the processor passes the test. The processor will then be marked / labeled in accordance speed test results are successfully passed. It is believed that when the factory test their processors to label processor speeds at 1 level lower than the results of tests that passed, this was done to further ensure the reliability of the processor. For example, a processor that passes the test at a speed of 200 MHz will be labeled 166 MHz. That is a 166 MHz processor the computer has been certified ("certified for") by the plant was able to operate at a speed of 166 MHz, even in extreme conditions. The condition in question is extreme temperature or elevated temperatures (above 60 ° C), a wide range of voltage change (no stable source of electric current), the use of
continuous operation (a few years of non-stop), and how the use of other weight.

Should be questioned about the differences between the official clock speed Pentium processors. An example is the Pentium 150 and Pentium 166. Strangeness is on differences in the use of the type of voltage. Pentium 150 using standard, while the 166 uses voltage Pentium VRE. Yet the fact that there is a Pentium 150 can operate at 166MHz only by changing the voltage of a standard type to VRE. It can be concluded that Intel sells Pentium 166 Pentium 150 with labels only to meet the needs of the market. At the end of 1997, there are rumors that Intel high-speed processor label with a lower speed, this is done 'just to' meet the market demand, re-labeling is done on a Pentium 200MHz MMX Pentium MMX166MHz MMX166 MHz Pentium because the demand is high while
processor is no longer manufactured. The issue may not be true, but there is no way to prove it because Intel has never issued an official statement.

Then what is the difference between an Intel Pentium MMX 166MHz with 200MHz MMX?

Actually that distinguishes architecture processor design is the size of transistors, a faster processor and a 0.25 micron colder than 0.35 microns. Between MMX 166MHz to 200MHz using the same transistor size is 0.35 microns. Users can only trust the specifications given on the product manufacturer. If labeled 166MHz means it can operate optimally at 166MHz, and it is possible to operate at 200MHz. There is a possibility that Intel will do the same for the other processors in the future.

With the 'difference' tolerance limits or margins do factory for component processors, then in ideal conditions it is possible to "force" components on the processor for higher speeds than the rate given by the manufacturer. The ideal condition in question is a good cooling, power supply quality and fairly, motherboard and memory are of high quality, and so on. There is further information on the factors that affect the overclocking results.

The process of forcing the processor components to work at higher speeds than the rate given plant then known as "overclocking". Based on the above information, it is advisable to overclock the processor speed of the higher level is the same as the speed of the processor at the speed of return in accordance with the test results which it passes (valid only for Intel processors), in the limit that is considered safe overclocking.

Formerly it should be emphasized that not every system or computer configuration capable of operating faster than ever with overclocking. The reason is that the previous system was maximized by the manufacturer or store selling computers in order to compete. Factory / shop typically uses the motherboard, memory, power supply of low quality which can suppress selling prices. Means the computer is very difficult or even impossible to do overclocking. If forced labor made possible the computer system will be uninterrupted or permanent damage. Besides overclocking is not recommended to be done on the computer / PC built-up assembly plant. Why? Factory Built-up PC assemblers have design components such as the motherboard, memory, vga, monitor the individual components are also designed specifically for each of the types of processors used, the components of the PC are labeled / special seals to ensure your PC is not 'touched' by the user or any other party. Built-up PC also rarely include motherboard manual and components specific to the buyer. User manual is needed for overclocking. Without books overclocking is done is to 'try' a highly risky, in addition to the warranty provided by the manufacturer will be lost if the label / official seal given order.

Which many believe now is overclocking was not safe, but then again knowing the right techniques and perform a variety of prevention then open opportunities for overclocking without "burning" the processor used.

Overclocking has risks that can result in damage to the computer system as it tries to operate the computer system faster than its specifications. This damage can be damage to the components or data corruption. If you know or have never experienced before, back up important data beforehand or that the data is secure. Better yet, if overclocking experiments conducted using a backup hard disk that does not contain important data.

Overclocking will shorten the processor, how long is unknown, but it all depends on the extent of overclocking is done.

The processor can be damaged so called electromigration electromigration had occurred in the area of ​​silicon chip processor that operates at very high temperatures, electromigration can cause permanent damage to the processor. Electromigration does not directly damage the processor, electromigration is a long process, so it can also be said electromigration shortens the life of the processor. Suppose the normal life of a processor is less than 20 years of work. But with rapid technological change, it can be confirmed before the 10-year users have upgraded or even buy a new computer.

If you want to avoid electromigration then one important thing to do is to keep the temperature of the processor to remain at normal operating temperature. How that can be implemented include using cooling heatsink and fan are good, if the level is high enough overclock is done then you should use a heatsink and fan are larger, or use a peltier cooler, use thermal grease, and make good air circulation in the casing CPU.

There is the possibility of problems that are not known to look before it is too late. An example is when the process of calculating the 2 +2 produces 5, this situation indicates the processor is damaged. Therefore it is not recommended for overclocking on the important work environment (databases & programming).

The risk of computer system crashes or hangs when the higher-clocked processor. No one wants the computer system crashes or hangs, especially for the business professional environment, prevent system crashes or hangs very important.