There are four stages of Non-REM sleep. During Stage 1‚ the eyes are closed. One can be awakened without difficulty; however‚ if aroused from this stage of sleep‚ a person may feel as if he or she has not slept. The heart rate slows and the body temperature decreases during Stage 2. At this point‚ the body prepares to enter deep sleep. Stages 3 and 4 are deep sleep stages‚ with stage 4 being more intense than Stage 3. These stages are known as slow-wave‚ or delta‚ sleep. If aroused from sleep during
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any significant increase in assimilable organic carbon (AOC). Research has confirmed that UV effectiveness is relatively insensitive to temperature and pH differences. In addition‚ researchers found that UV application does not convert nitrates to nitrites‚ or bromide to bromines or bromates. Recent pilot studies show that UV-treated drinking water inhibits bacterial growth and replication in the distribution system; however‚ conditions within distribution systems‚ such as leaks‚ still require additional
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26/08/2013 CARDIOVASCULAR SYSTEM PHARMACOLOGY To generate the force that moves the blood through circulatory system 1 26/08/2013 Learning Objectives: After completing this chapter you should able to: •Name categories of cardiovascular drugs •Describe the therapeutics effects of drugs •Identify the side effects 2 26/08/2013 Heart & Blood Circulation 3 functional parts: • • • Cardiac muscle Conduction system Nerve supply Main Diseases CHF – Congestive heart failure
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nitrogen and chlorine is the same. But nitrogen is inert at room temperature whereas chlorine is highly reactive. xvi) Pure PH3 does not burn but impure sample of PH3 burns in air xvii) Nitric acid turns yellow in sunlight. xviii) Nitrate and nitrite cannot be distinguished by the action of concentrated H2SO4. xix) NO2 cannot be dried by means of NaOH solution. xx) On heating Pb(NO3)2 produces a pale yellow gas which on strong heating produces a brown gas. xxi) Nitric acid mostly
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Life cannot exist without energy Energy flows in one direction thru the ecosystem eg. Green plants (autotrophs) harness light energy from the sun. An another consumers eat the autotrophs and other consumers. This flow of energy is a consequence on the laws of thermodynamics‚ were in sense that energy can neither be stored or created‚ but is transferred from one type to another. At which sun is converted to heat. The transfer of energy in an ecosystem‚ can be showed in a number of ways eg as a
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food additives for humans‚ livestock or plant fertilizers with a brief description of their chemical composition and structure Additives in foods include vitamins‚ minerals (calcium‚ iron etc)‚ flavors (sugar‚ salt etc)‚ preservatives (nitrates‚ nitrites‚ sulfites)‚ coloring‚ stabilizers‚ The rationale behind using these additives The advantages and disadvantages of having these additives NOTE: these must not be based on your own opinion but based on research; at least two reference sources are
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Chemical Bonds Chemical Bond: is the force that holds atoms together in a compound. They form because they lower the potential energy of the charged particles that compose atoms. Chemical bonds can be broadly classified into two types: Ionic and Covalent. Ionic: metal & nonmetal Metals have a tendency to lose electrons and nonmetals have a tendency to gain them. The metal atom becomes a cation and a nonmetal becomes an anion. The oppositely charged ions attract one another and form an ionic
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Coordination Complexes of Cobalt Advanced Inorganic Chemistry Lab 02/27/2015 Abstract When the transition metal‚ cobalt‚ forms a complex involving a nitrate ion‚ the ligand has the ability to coordinate via N or O. The ability of the nitrate to attach via the N or O gives rise to the term‚ linkage isomers and can affect the functionality of the complex with other molecules. To explore structural differences between complexes‚ pentaaminechlorocobalt (III) chloride‚ pentaaminenitritocobalt (III)
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described previously with quinoline as the sole carbon‚ nitrogen and energy source(Geng‚ et al.‚ 2015). It 88 has the ability to completely degrade quinoline into carbon dioxide and water‚ and convert nitrogen in 89 pyridine ring into ammonia‚ nor into nitrite(Geng‚ et al.‚ 2015). 90 91 2.2. Reactor operation 92 The accidental wastewater‚ stored in an emergency overflow pond of the plant‚ was taken as raw 93 wastewater for treatment. The property of water was shown in Table 1. It was characterized as reddish
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Ionic Reactions Abstract This experiment is designed to study the nature of ionic reactions‚ and write net ionic equations for precipitation reactions‚ as well as to identify spectator ions‚ perception reactions and solubility of different compounds. Experiment and Observations In this experiment I was using a 96-well plate to add two drops of the following solutions into seven wells in rows A through E: cobalt (II) nitrate‚ copper (II) nitrate‚ iron (III) nitrate‚ barium
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