COMBUSTION PROCESS BEFORE USING DTS-I TECHNOLOGY The orthodox single cylinder‚ four-stroke‚ spark ignition engine is generally equipped with a single spark plug. The fresh charge (air – fuel mixture) that entered the cylinder during the suction stroke is compressed during the compression stroke resulting the increase of pressure and temperature of the charge. The spark plug‚ usually situated at one end of the combustion chamber‚ ignites the air-fuel mixture and the ensuing flame spreads
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Organic Chemistry II Laboratory (ABCT357/ABCT3757) Lab Manual 2014-2015 Lee Hang Wai‚ Alston (alston.lee@polyu.edu.hk) Dr. Lee Cheng Hao‚ Samuel (chenghao.lee@polyu.edu.hk) Organic Chemistry II Laboratory (ABCT357‚ ABCT3757) (Group one) Contact: Alston Lee (alston.lee@polyu.edu.hk) Tuesday 8:30-11:30 ‚ Laboratory: Y1315 Lab supporting staffs: YK Au / Kan Chan/Arnold Demonstrators: Dr. Samuel Lee‚ Alston Lee‚ Fu Wai Chung‚ Guo Shuai‚ Yuen On Ying‚ Sep 16 Tue Acetylation of α-D-glucopyranose (Expt
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patient feels when a pneumothorax occurs. A chest tube is surgically inserted‚ either at bedside or operating room‚ directly to the trapped air. Depending on how bad the pneumothorax is‚ the chest tube may or may not be connected to a machine where it suctions out the air that is trapped. Removing the air can take days or even weeks before the lung is fully inflated. During the procedure‚ there is a risk of the vocal cords of the patient to be damaged. There are patients whose vocal cords are fine after
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Introduction An electrophile is a reagent attracted to electrons and accepts an electron pair in order to bond to a nucleophile. Electrophiles will attack benzene and result in hydrogen substitution. However‚ this is not thermodynamically favoured because a sp3 hybridized carbon is generated‚ which disrupts the cyclic conjugation. In order to regenerate the aromatic ring‚ a proton is lost at the sp3 hybridized carbon. Thus‚ p-Nitroaniline can be prepared by means of electrophilic aromatic substitution
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For each question‚ choose your answer‚ and then give the rationale behind your choice. This will give you the opportunity to earn up to 10 points to be directly applied to exam 2. This must be submitted by the beginning of class 8/2. Multiple Choice Identify the choice that best completes the statement or answers the question. ___B_ 1. A 45-year-old client with excess fluid volume because of an acute kidney dysfunction is placed on a 1‚000 ml fluid restriction per 24-hour period. The client
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Induce abortion has various methods including Vacuum aspiration‚ manual vacuum aspiration‚ medical abortion‚ or dilation and evacuation. Vacuum aspiration is the most common abortion in the United States‚ and is a “surgical procedure that uses a suction tube to evacuate the contents of the uterus‚ which can be used through the first weeks and the second trimester” (Greenberg‚ Bruess & Conklin‚ 2010). The manual vacuum aspiration (MVA) is a variation of vacuum aspiration that can be used from the
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Abortion Abortion has been and continues to be a controversial topic in the United States. For many years there have been disputes for women’s life and the life of the child. Some people view it as someone not taking responsibility‚ others see it as a personal choice. The World Health Organization estimated in 2004 that unsafe abortions caused 68‚000 maternal deaths worldwide each year (“AbortionsProcon.org”). Women tend to have unsafe abortions when they are denied abortions or do not have access
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Sypnopsis In this experiment‚ acetylsalicylic acid was synthesized from the acidification of salicylic acid and acetic anhydride. The objective was to convert a specific amount of salicylic acid into the same amount of aspirin that was high in purity. Furthermore‚ the other objectives were to enable students to conduct the synthesis of aspirin‚ reinforce skills or recrystallisation and the technique of melting point determination. The amount of each compound should be the same because there is
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Task1 - Birthing Environment and Labour Choices In order to support woman through labour and birth‚ a choice of three birthing environments are provided. All of which are equipped with suitable birth facilities. NCT (2009) states that‚ women are entitled to choose where they give birth‚ with the support of their midwife- who are there as an aid to ensure a straightforward vaginal birth. Despite these options‚ in some cases- changes can be made at the last minute. Home birth A home birth proves
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In the morning‚ have you ever had to grab your glasses to see the blaring alarm clock? Do you consider yourself "blind as a bat"? If you nodded your head to either of these questions‚ you’ve probably heard about the LASIK eye surgery that can‚ in some cases‚ fix all of those problems. LASIK is a relatively new procedure for select candidates who know both the benefits and risks of the operation. LASIK stands for Laser- Assisted In Situ Keratomileusis. This is an operation in which the shape of
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