What are the possible links between facial expressions and emotion? One link is arousal, which is the level of activity or preparedness for activity in an organism. Intense contraction of facial muscles, such as those used in signifying fear, heightens arousal.
Self-perception of heighten...

Joy and sadness are experienced by people in all cultures around the world, but how can we tell when other people are happy or despondent? It turns out that the expression of many emotions may be universal. Smiling is apparently a universal sign of friendliness and approval. Baring the teeth in a...

Nowadays, the gap between the city and the countryside becomes more and more overt, which arouses colossal concerns. To understand the solution, let’s take a closer look at the causes of the gap at first.
The main reason of the gap is the unequal investment between city and rural ar...

With the development of society, our life and working pressure are greater and greater. In this way, a lot of people have become smokers. Tobacco, as a kind of drugs, prevails in the society. Some people especially who is working in

There has long been controversy over the legality and apparent acceptance of tobacco in society. Some hold that cigarette and other tobacco containing products should be banned, that is, treated as narcotics. Of course it is more difficult than create new type

The birth of cars have made an enormous change to our life.in the past, we travel from one place to another only by foot, nowadays, cars can do it. It goes withour saying that the invention of cars bring great benefit to all of us.but as proverb goes:no garden without weeds.car is no exception.

Cone crusher is suitable for broken of metallurgy, construction, construction, chemical and silicate industry raw materials, etc. it can break all kinds of ore and rock with medium and above medium hardness. In addition, cone crusher has big crushing ratio, high efficiency, low energy consumption...

The impact crusher produced is mining equipment professionally used in breaking ore, which is also called mining impact crusher or stone impact crusher. At present, we launch a new brand of impact crusher: mobil...

In order to eliminate equipment failure and accidents, avoid losses of state property and life, problems of cement production equipment should be carefully treated. Bulk cement plant equipment fault refers to the equipment whic...

Globalization creates conditions for widening international exchanges, strengthening mutual understanding between nations, expanding cultural, educational, and scientific cooperation between nations and countries, enjoying the cultural achievements of people around the world which encourages the ...