Different pollutants released from the vehicles would cause different impacts to the human body. The first one is Nitrogen oxides (NOx). When the fuels are burning at a very high temperature combined with the electric sparks in the vehicles causing the nitrogen and oxygen in the atmosphere combined together but then the formation of nitrogen oxide will react with the oxygen to form nitrogen dioxide(NO2) rapidly. If people inhaled a low level of NO2‚ the gas will irritate your eyes‚ nose‚ throat‚
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Before Surgery in the early 19th century is dangerous and painful. There is no way to relieve the pain felt by patients during operations. Surgeons do not yet know how to control blood loss or infection‚ and operating theatres are dirty and dangerous places to be.Some surgeons superstitiously prefer to wear their ‘lucky’ coat in the operating theatre – a coat worn during a successful operation in the past. They do not wash their ‘lucky’ coat between operations in case this breaks their run of
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protects environment‚ but also is in line with the public policy documents on response to energy conservation‚ emission reduction and low carbon. The lime quality of horizontal lime kiln production first is dependent on the amount of calcium oxide and magnesium oxide‚ the second is to look at birth burnt lime burning rate‚ and burning of birth is part of the incomplete decomposition of limestone‚ whereas more than burned calcined limestone. This lime activity of the part is low‚ it is difficult to distinguish
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Specimen Paper Centre Number Surname Other Names Examiner’s Initials Candidate Signature Question Mark Candidate Number For Examiner’s Use General Certificate of Secondary Education Foundation Tier 1 2 3 4 5 6 7 Science A Unit Chemistry C1 Chemistry 1F Chemistry Unit Chemistry C1 For this paper you must have: • a ruler • the Data Sheet (enclosed). You may use a calculator. F 8 9 TOTAL Time allowed ! 60 minutes Instructions ! ! ! ! Use black ink or black ball-point
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How does the concept of chance relate to knowledge and knowing? When did something happen to you unexpectedly or by chance? A good number of things in everyday life might seem like a coincidence‚ or a lucky chance‚ also known as serendipity. Chance affects our everyday thinking. How much safer is it to travel by car than by bike? Should I drink another beer? Should I take a risk? We might claim we know something if it is very likely or highly probable. For example‚ in your study of science you
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Substance abuse- Inhalants The term substance refers to chemical compound that are ingested in order to alter mood or behavior. Substance use: It is the ingestion of psycho active substance (which alters mood or behavior) in moderate amount that does not significantly interfere with social‚ educational or occupational functioning. Eg: Drinking a cup of coffee in the morning in order to wake up. Substance intoxication: It means our physiological reaction to ingested substances that is getting high
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they are man made in factories. There are four main types of inhalants which are volatile solvents‚ gases‚ aerosols‚ and nitrites. Some examples of these are household products such as glue‚ paint thinner‚ and aerosol cans. Inhalants such as nitrous oxide (laughing gas) are used for medical purposes which put a person to sleep. Other than that there are no real medical uses for inhalants. Some ways Inhalants can be used are "sniffing" or "snorting" fumes from containers; spraying aerosols directly into
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properties of refractory of rotary kiln‚ it can be divided into alkaline‚ acidic and neutral refractories; 2. The chemical composition of refractory material of rotary kiln‚ it can be divided into silicon‚ aluminum‚ aluminum silicate‚ magnesium oxide‚ alumina‚ silicon carbide‚ carbon‚ etc. 3. According to the combination of rotary kiln refractory material‚ it can be divided into cement‚ chemical composition‚ condensing combination‚ etc. 4. During installation the refractory material of
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considerably evens a little action. Therefore‚ I did carpool when I have the same destination with my friends or family. This is because‚ all the transport we use such as motorcycles‚ cars‚ buses‚ and so on will release the greenhouse gases (nitrous oxide) that can lead to global warming. Besides‚ carpool can save the energy sources of petroleum and money. For instance‚ if we drive the car individually then we have to pay more money for using more petroleum and there are more petroleum had been used
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Joyce C. Villamar Assignment No. 4 IV – Calcium November 26‚ 2012 Sterile Bandage A sterile bandage‚ also known as a sterile dressing‚ is any material that is free from infectious matter and that is used to cover an open wound or injury to help control bleeding and prevent additional contamination from the environment. One of the principle functions of the skin is to act as a guard against microorganisms‚ commonly called germs; debris; chemicals‚ and other substances from the
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