Database Integration :: essays research papers

1. System Architektur Folgende Tools werden von uns fà ¼r verwendet, die es uns erlauben unseren Partnern eine sichere E-commerce Là ¶sung anzubieten.  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Apache Web Server  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Mod_SSL – Ein Modul fà ¼r SSL (Secure Socket Layers)  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  OpenSSL – Open Source Toolkit (benà ¶tigt fà ¼r Mod_SSL)  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  MySQL – Ein SQL Datenbank-Server  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  PHP4/Zend – Eine Server Sided Scripting Language Diagramm 1; System Architektur 2. Datenbank Integration Um den Kunden online Preisvergleiche anbieten zu kà ¶nnen, mà ¼ssen wir unsere Partner integrieren. Dazu benà ¶tigen wir eine Datenbank, die uns erlaubt die Politzen zu kalkulieren und es Ihnen ermà ¶glicht durch unser Back End die Daten mit einem Klick zu erneuern. Zur Integration der Datenbank mà ¶chten wir folgende Schritte vorschlagen:  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Festhaltung Ihres Datenbanksystems  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Eruierung der Variablen die fà ¼r die Kalkulation benà ¶tigt werden  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Erstellung der Datenbank die Sie zum uploaden verwenden kà ¶nnen (Praktisch werden in der bereits bestehenden RDBMS (Relational Database Management System) neue Tabellen erstellt, die die Variablen zur Berechnung enthalten. Sollten sich Tarife à ¤ndern kà ¶nnen Sie dann selbstà ¤ndig Ihre Daten erneuern (Back End))  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Entwicklung des Back End (siehe 3. Das Back End) Systems Diagramm 2; Datenbank Integration 3. Das Back End Das Back End ermà ¶glicht es unseren Partnern Ihre Datenbank selbstà ¤ndig up-zuloaden. Dafà ¼r entwickeln wir eine Userplattform, in der Sie mit einem Username/Passwort – Erkennung Ihre Datenbank uploaden kà ¶nnen. Weiters checken wir Ihre IP – Adresse um sicher zu gehen, damit niemand anders Zugriff auf die Daten hat. Das Back End ist eine Webseite, auf die unter der URL http://www.versicherungsmarkt.at, mit einer anderen Portnummer (:2001) auf die mit den Sicherheitsdevicen zugegriffen werden kann. Username/Passwort – Erkennung  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Die Username/Passwort – Erkennung wird mit PHP4/Zend erstellt, und ermà ¶glicht es Ihnen im Gegensatz zu einer Apache – Erkennung „auszu-loggen.â€Å"  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Es ermà ¶glicht uns die Zugriffszeit zu limitieren. Zum Beispiel, wenn jemand fà ¼r im System eingeloggt ist und die Seite fà ¼r 30 Minuten nicht gebrowst hat, wird bei erneuten Zugriff eine Username/Passwort – Erkennung verlangt.  ·Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Die Erkennung erfolgt pro Seite. Sie kà ¶nnen auf Seitenbasis bestimmen, fà ¼r welche Seiten eine Erkennung zu erfolgen hat. Checking IP – Address Durch das Checken der IP – Adresse kà ¶nnen wir sicherstellen, dass nur bestimmte Rechner auf das Back – End Zugriff haben.

Bmgt 488 Chp 8 Exercise 6

Page 286-287 6. You have prepared the following schedule for a project in which the key resource is a backhoe. This schedule is contingent on having 3 backhoes. You receive a call from your partner, Brooker, who desperately needs 1 of your backhoes. You tell Brooker you would be willing to let him have the backhoe if you are still able to complete your project in 11 months. Develop a resource schedule in the loading chart that follows to see if it is possible to complete the project in 11 months with only 2 backhoes.Be sure to record the order in which you schedule the activities using scheduling heuristics. Activities 5 and 6 require 2 backhoes, while activities 1, 2, 3 and 4 require 1 backhoe. No splitting of activities is possible. Can you say yes to Brooker’s request? Legend |ES |ID |EF | |SL |RES |SL | |LS |DUR |LF | RESOURCE | | |Schedule the resources load chart with ES and Slack updates | 1 2 3 4 5 6 7 8 9 10 11 12 13 ID |RES |DUR |ES |LF |SL | | | | | | | | | | | | | | | | | | | | | | |1 | | | | | | | | | | | |1 |1 |1 |0 |5 |4 | | | | | | | | | | | | | | |2 |1 |2 |0 |3 |1 |1 |1 | | | | | | | | | | | | |3 |1 |3 |0 |3 |0 |1 |1 |1 | | | | | | | | | | | |4 |1 |2 |2 |7 |3 | | | | | | | |1 |1 | | | | | |5 |2 |4 |3 |7 |0 | | | |2 |2 |2 | | | | | | | | |6 |2 |2 |7 |9 |0 | | | | | | | | | |2 |2 | | | RESOURCES SCHEDULES |2 |2 |2 |2 |2 |2 |2 |1 |1 |2 |2 | | | |RESOURCES AVAILABLE |2 |2 |2 |2 |2 |2 |2 |2 |2 |2 |2 |2 |2 | | Yes, you can give Brooker one backhoe, however, you have increased the risk of being late if a delay should occur. List the order in which your activities were scheduled. (3, 2, 1, 5, 4, 6)

Patient Risk Essay

This example of a reflective essay is presented in association with Price, B and Harrington, A (2013) Critical Thinking and Writing for Nursing Students, London, Learning Matters. Readers are introduced to the process of critical and reflective thinking and the translation of these into coursework that will help them to achieve better grades in nursing courses. Stewart, Raymet, Fatima and Gina are four students who share their learning journey throughout the chapters of the book. In this essay on the assessment of pain, Raymet demonstrates her reflective writing skills near the end of her course. Raymet had by this stage written several reflective practice essays and gained good marks. This time though she was encouraged to deepen her reflections, speculating selectively on how the account of pain experienced by a patient (Mrs Drew) might help her to work more creatively with patient perceptions and reported needs. N.B. Remember, copying essays such as this, submitting them as a whole or in part for assessment purposes, without attributing the source of the material, may leave you open to the charge of plagiarism. Significant sanctions may follow for nurses who do this, including referral to the Nursing and Midwifery Council. Assessing Mrs Drew’s Pain Mc Caffery and Pasero (1999) state that pain is what the patient says it is. If we accept that point, then nurses need to explore the patient’s perceptions of pain, as well as their report of experiences. The two are not quite the same. Patients may report their pain in a variety of ways, dependent on the nature and the intensity of pain and the context in which it is felt (e.g. whether they are ever distracted from the pain). Their perception of pain is a little more though and it includes the meaning that the pain has for them. It includes explanation of why the pain is there in the first place, what it indicates about their body and what it could  suggest might happen in the future (getting better, getting worse). The nurse assesses the account of pain shared by the patient, and this may be given in the form of a story. This is how it began, this is how it felt, this is what that meant to me and this is what I did about it (Mishler et al. 2006) In this essay I explore the assessment of pain as conducted with one 60 year old patient whom I will call Mrs Drew. Whilst the essay describes an assessment of pain with a single patient, I try to share too some ideas and questions that this provokes within me about pain assessment more generally. Mrs Drew made me think about other patients, future assessments and what I had to do as a nurse to help patients. To help structure this essay I use the framework described by Gibbs (1988). Whilst the episode concerned relates a stage in Mrs Drew’s illness when she challenged her treatment protocol, it also includes some of the memories and thoughts that this patient refers to regarding her earlier illness and past ways of coping with pain. In particular, it prompted me to question to what extent I as a nurse should recommend analgesia, drawing on what I had been taught about the effective control of pain. I had learned that it was better to control rather than to chase pain ( e.g. Mann and Carr, 2006; Forbes, 2007). Mrs Drew was diagnosed with lung cancer a year earlier and had initially had her illness treated by chemotherapy. This had helped her to achieve a remission that lasted for nearly ten months (Hunt et al, 2009 describe the prognosis of this disease). The cancer had returned though and spread to her spine and it was here that she experienced most of her pain.It was at this stage that the doctors explained that her care would now be directed towards her comfort rather than a cure—to which she had replied, ‘you mean palliative care’. Mrs Drew was supported at home by her husband Neil and visited on a regular basis by community based nurses to whom I was attached as part of my student nurse training. She was prescribed oral morphine and could decide within stated limits how many tablets she could take in any one 24 hour period. The situation I had visited Mrs Drew on several occasions over the period of a month when the community nurse and I were confronted by a tearful patient who announced that she did not wish to take the oral opiates quite as often as we were recommending. As she spoke she held her husband’s hand tightly, looking across to him as she described her experiences and feelings about the matter. Yes, there had been some bad nights when the pain had woken her and she had to sit up and watch television to try and distract herself. Yes, sometimes the pain made her feel nauseous, but she was alarmed at how frequently she was taking the ‘pain tablets’ and how this made her feel about herself. However well meant the medication was, it didn’t feel dignified to be so reliant on drugs, or quite so sleepy and unresponsive for such a high percentage of the day. Whilst the analgesia was working well when she took the tablets, the quality of life wasn’t what she wanted. The community nurse listened patiently to Mrs Drew and then explained that it was normal to have panic moments about such medication. Morphine had a reputation, one that people associated with misuse of drugs, rather than their therapeutic use. Used on a regular basis, the drug wouldn’t cause addiction and it would provide a great deal of reassurance to Mr Drew as well. The community nurse stated that she was quite sure that he respected his wife’s need to sleep when she wished and to build the rhythm of the day around her needs. At this point Mrs Drew shook her husband’s hand, and said, ‘tell her†¦tell her what we’ve talked about!’ Mr Drew then explained that his wife was used to dealing with pain, she had suffered recurrent pain in her neck and shoulder after a road traffic accident some years before. The pain had sometimes been severe, but he had massaged her shoulders and used heat packs that she found soothing. They had decided that they wished to use this technique now, keeping the morphine for absolute emergencies, when she was losing sleep and couldn’t eat as a result of the discomfort. The community nurse assured them that they were in charge of the analgesia and would be allowed to make their own decisions. She started to make notes though, and announced that she was making a referral to the cancer pain clinic, something that would help them to take stock of the situation. There was very good reason to suppose that this might be a problem associated with choosing the right dosage of the  morphine, rather than using supplemental pain relief measures. Mrs Drew responded sharply, ‘You’re not listening to me though Jane (the community nurse’s name—a pseudonym is used here), I want to use heat packs instead of morphine, at least during the day. I want to be more alive with my husband.’ The community nurse assured Mrs Drew that she had heard what she had said and respected her point of view. There would though be nothing lost by using the clinic to gain a further check on this matter. With that she excused us, explaining that we had a further appointment that morning and we left, having checked that Mrs Drew had a sufficient supply of her different medicines. As we walked to the car the community nurse empathised with Mrs Drew’s plight, saying that if she had lung cancer she would probably grasp at straws too. She would reach out for things that seemed more normal, and then observed, ‘but this isn’t normal is it, the pain she has isn’t normal. It’s not just a whip lash injury and old age.’ Feelings I remember that during this episode feeling a mixture of confusion, surprise, anger and impotence. Mrs Drew had surprised me by the way she had spoken, using what seemed to be a planned announcement. They had waited for and perhaps rehearsed this moment. Nothing in my experience to date had prepared me for such an encounter, at least in such circumstances, where we as nurses were so obviously working to support the patient. It was only later that I called the episode a confrontation. Mr and Mrs Drew had confronted the community nurse and I had been the largely silent witness to the event. As the discussion proceeded I remember making supportive noises, remarking how useful heat packs sometimes were and glancing across at Jane, who seemed to be signalling with her expression that I should leave this debate to her. I was trying to read her reactions to the Drew’s points and concluded that if I couldn’t support her arguments to the patient, then I should remain silent. The re were issues here that I perhaps hadn’t enough experience to deal with, at least, whilst ‘thinking on my feet’. My initial anger (with Mrs Drew for not acknowledging all that we were trying to do) quickly became displaced towards my colleague Jane. During the event I couldn’t explain why that was, but afterwards, when I made notes, I realised that it was because she seemed to have set the agenda in her own mind and to be requiring the patient to comply with concerns of her own. Put rather crudely, Jane seemed to be saying, listen I know about these things, this is a phase, an anxiety; you can work through all this. I believed at this point that she had missed the significance of the event, the way in which the Drew’s had arranged the conversation. For them, this was not a phase at all, but a considered and very important decision, one that they wanted the nurses to accept (Freshwater, 2002 and Edwards and Elwyn, 2009 emphasize the importance of negotiated care planning). My feelings of impotence were associated strongly with my lack of clinical experience. I have met this before. No matter how many placements I do, no matter how good the mentoring I receive, I keep meeting situations where I am unsure about how to respond next. I feel younger, less knowledgeable than I should be at this stage in my training. I want to reassure patients, to support colleagues and to give good advice, but there is not enough confidence to do that. If I felt unsettled and uncertain about Jane’s response to the Drew’s, right then I couldn’t easily explain that. I couldn’t offer a second opinion, couldn’t suggest an idea that might help support the patient. To my annoyance I couldn’t manage that either as we left the house. Jane had made some fair points, she  clearly seemed concerned about the patient’s needs, but perhaps she hadn’t spotted the right need—for Mrs Drew to determine in greater part how she de alt with her illness. Experience evaluated Afterwards, this short episode prompted doubts and debates about several important aspects of nursing for me. Setting aside the etiquette of learning in clinical practice, not challenging a qualified nurse in front of a  patient, there were problems here associated with supporting patient dignity, with my assumptions relating to analgesia and pain control strategies, and I realised, with my assumptions about types of pain and who had the expertise to define these. Dignity is more than simply using the appropriate terms of address, protecting the privacy of patients and attending to their expressed concerns (Price, 2004). It is about clarifying the ways in which they live and accommodate illness or treatment. It is about finding out what benchmarks they use to say that ‘yes, I am doing well here, this makes me feel good about myself’. Upon reflection, I sense that we on this occasion had not worked hard enough to discover how Mr and Mrs Drew define quality of life, or being in charge of their situation. We were more concerned with providing resources, sharing research or theory about medication and questioning the familiar misconceptions associated with morphine. To put it simply, we were ‘missing a trick’, reading the encounter as something that had happened many times before—the report of problems or anxieties, a request for help, rather than a decision that the patient and her carer had already come to. Reading situations well seemed, with the benefit of hindsight, to be the first basis for dignified care. ‘What is happening here, what will help the patient most?’ were questions that we perhaps assumed that we already knew the answer to. I realised that in my training I had already accepted the argument that patients would wish to remain pain free come what may and that the tackling of fears about prospective pain, was something that nurses engaged in. I assumed that because cancer pain represented such a major threat, because it was greater and more all encompassing, that there was little or no doubt that it should be removed. What was so unsettling, and took so much time to examine, was that Mrs Drew acknowledged the possible severity of metastatic cancer pain, but that she still preferred to respond to it using measures that had worked for her whiplash neck injury. Mrs Drew was willing to trade off a pain free state for something that gave her a greater sense of control and which perhaps enabled her husband to express his support for her in a very tangible way (preparing heat packs, massaging her back, rather than simply giving her the tablets). Mr and Mrs Drew questioned all my assumptions about best analgesia pr actice, and seemed to write a large  question mark on the textbooks I had read about chasing rather than controlling pain in palliative care situations (Mann and Carr, 2006). Reflections (learning opportunities) The episode with Mrs Drew left me uncomfortable because my past approach to pain management was theoretical. I (and I believe Jane too) regularly made use of science to decide what could be done as regards pain relief and to assume that patients would wish to achieve all of those benefits. This wasn’t about local applications of heat versus morphine, Mrs Drew could use both, it was about choice and how patients made choices—why they reached the decisions that they did. It was for me, about accepting very personally, that providing that patients are given all the relevant facts, alerted to the options, that they really are able to make choices that work for them. The very fact that Mrs Drew’s illness was now incurable, that she and her husband usually tackled pain together, meant that her solution to the challenge was different to those that many other patients arrived at. Having dealt with this pain for some time, knowing that it could and probably would get wors e, meant that she was better equipped than other less experienced patients to make a decision here. This took nothing away from the benefits of sharing further discussion with pain clinic experts. I thought, Mrs Drew will stand her ground, she will insist on doing things her way if her husband is strong too. What it did highlight though was the importance of listening to patients, hearing how they perceive pain, how they narrate not only the pain but what they did about it. In this instance the narration was all about dignity, and coping, and finding ways to help one another and how this enables us to feel in the face of such a terrible illness. So, in telling us about her pain, what she did about it, using morphine when it was ‘absolutely required’, Mrs Drew was not reporting her ignorance of what could be achieved if the medication was used differently, but what she preferred to do as it enabled her to achieve different goals. Mrs Drew’s goals were about liveliness, alertness and stoicism, showing that she could bear at least a measure of pain. I wondered why I hadn’t listened carefully enough to such a story? Was it because of time pressure, or perhaps complacency, that Jane and I felt that we already knew what account would be  shared? Did we think that the patient would ask for help, more help, as the pain continued? If so, then our guesses had prompted us to behave as experts, and problem solvers, on the patient’s behalf. Perhaps hearing a patient narrative is about discovering what sort of role they would like you to fulfil. If so, then it might be a difficult role. I thought hard about how hard this was for Jane. She was going to be asked to witness Mrs Drew’s future pain, one that was now less perfectly controlled. She was going to be asked to reassure, to suggest measures that might help, without reminding the patient that she ‘already knew that you couldn’t manage pain that way!’ When I think about it now, that is very stressful for a nurse. It is about caring and allowing patient’s to make choices that we personally might not make. Conclusions I have drawn then three conclusions from the above reflection. First, that being patient centred is never easy and requires real listening and interpretation skills. My criticism of what Jane chose to do, to try and dissuade Mrs Drew from a course of action, recommending further appraisal of the situation, is an easy one to make. Nurses confront situations such as this relatively unprepared and react as considerately as possible. It is easy in hindsight to recommend other responses, a further exploration of what motivated Mrs Drew’s pain management preferences. Second, that experience can be a valuable teacher, the equal of textbooks. If nurses are interested in care, then we should be concerned with the sense that patients make of their own illness, the treatment or support that they receive. We need to understand what patients have to teach us and have to acknowledge that this means that we won’t always seem in control ourselves, expert and knowledgeable. Our expertise might be elsewhere, helping patients to reach their own decisions. Third, that one way to understand patient perspectives on illness or treatment, on pain management in this example, is to hear how they talk  about the situation. How do they describe the pain, how do they refer to what they did about it? The way in which the story is shared, how we coped, how this made us feel, is as important as the facts related. Sometimes a patient needs to feel stalwart, even heroic in the face of illness. Future care It would be foolish and unprofessional to recommend to other patients that they might not wish to remove pain, or that overcoming pain doesn’t always mean we don’t continue to experience it. For every Mrs Drew there may be many other patients who would welcome the complete removal of pain, so that they can die calmly, quietly, with their own version of dignity. But it does seem to me, that it will be worth thinking about the diversity of patients and how they prefer to cope when I assess pain and help manage this problem in the future. I won’t be able to walk away from the responsibility of debating whether I have explained all that I could, detailed the strengths and limitations of different ways of coping. I will need to find reflection time to ponder what patients have said and if necessary to go back and say, ‘I’ve been thinking some more about your words last week..’ knowing that this doesn’t make me any the less professional. References Edwards, A and Elwyn, G (2009) Shared decision-making in health care: achieving evidencebased patient choice, 2nd ed. Oxford, Oxford University Press Forbes, K (2007) Opiods in cancer pain, Oxford, Oxford University Press Freshwater, D (2002) Therapeutic nursing: improving patient care through self awareness, London, Sage. Gibbs G (1988) Learning by doing: a guide to teaching and learning methods, Oxford, Oxford Polytechnic Further Education unit Hunt, I., Muers, M and Treasure, T (2009) ABC of lung cancer, Oxford, Wiley-Blackwell/BMJ Books Mann, E and Carr, E (2006) Pain management, Oxford, Blackwell McCaffery, M and Pasero, C (1999) Pain: Clinical manual, Mosby, Philadelphia Mishler, E., Rapport, F and Wainwright, P (2006) The self in health and illness: patients, professionals and narrative identity, Oxford, Radcliffe Publishing Ltd Price, B (2004) Demonstrating respect for patient dignity, Nursing Standard, 19(12), 45-51

Reactivity of Metals with Water and Acid Essay

Introduction This report discusses an experiment to study the relationship of the physical and chemical properties of elements in groups and periods to the atomic structure of the elements. The objective of the experiment is to observe what happens when seven metals (magnesium, calcium, iron, lead, copper, aluminum, and zinc) are placed in water and/or hydrochloric acid. The hypothesis is that not all metals will react with the water and/or hydrochloric acid. This report presents the experiment’s procedures, results, analysis and questions. Purpose To observe relationships between the reactivity of elements and their location on the periodic table. Materials Part A: Reactivity of Metals in Water 1. 2. chemical safety goggles 3. 250 mL beaker 4. test tube (18 mm x 150 mm) 5. test-tube rack 6. scoopula 7. spark lighter 8. Bunsen burner clamped to a retort stand 9. test-tube clamp 10. pH paper 11. paper towel 12. small samples of 1. calcium, Ca(s) 2. magnesium, Mg(s) 3. copper, Cu(s) 1. wooden splint Part B: Reactivity of Metals in Hydrochloric Acid 1. 2. chemical safety goggles 3. 20 mL graduated cylinder 4. 4 test tubes (18 mm x 150 mm) 5. test-tube rack 6. scoopula 7. small samples of 1. magnesium, Mg(s) 2. iron, Fe(s) 3. zinc, Zn(s) 4. aluminum, AI(s) 1. dilute hydrochloric acid (0.5 mol/L) 2. spark lighter 3. Bunsen burner clamped to a retort stand 4. paper towel 5. wooden splint 6. masking tape or test-tube stopper Procedure Part A: Reactivity of Metals in Water The materials were selected and brought to the station. Safety protocol was followed and safety glasses were worn throughout the experiment. The appropriate data tables were drawn in which to record the data observations. The beaker was filled with approximately 250 mL of tap water. The water was tested with pH paper and the results were recorded. On a folded piece of paper towel, the professor placed a small piece of calcium (Ca). Observations of physical properties were recorded. A test tube filled with tap water was placed, mouth down, into the beaker (figure 1) and the calcium was placed in the beaker(amendment: the original procedure asked to select a metal that produced a gas to collect the gas after first attempting the procedure. To avoid wasting time, the gas [if there was] was collected on the first and only attempt). The reaction was observed and recorded. After the reaction was complete, the water was tested with pH paper. This procedure was repeated using samples of magnesium and copper. All results were recorded. The test tube was extracted from the beaker and without flipping it, was placed mouth down in the test tube rack. Using a spark lighter, the Bunsen burner was lit and a wooden splint was lit from the flame. The burner was turned off. Using a test tube clamp, the test tube was lifted and with it’s opening at the bottom; the burning splint was inserted into the mouth. Observations were recorded. The splint was extinguished with water from the tap and all waste was disposed of. Part B: Reactivity of Metals in Hydrochloric Acid The materials were selected and brought to the station. Safety protocol was followed and safety glasses were worn throughout the experiment. The appropriate data tables were drawn in which to record the data observations. A graduated cylinder was filled with approximately 20.0 mL of dilute hydrochloric acid. 5.0 mL were poured into four clean test tubes, which were then placed on the test tube rack. On a folded piece of paper towel, the professor placed small quantities of magnesium, iron, zinc, and aluminum. The physical properties of each of the metals were recorded. One at a time, each of the metals was carefully dropped into a different test tube of hydrochloric acid. Reactions were observed for a 20 minute period (amendment: because of the lack of time, reactions were only observed for five minutes) and observations were recorded. Masking tape was used to lightly cover the test tube in order to collect gas from the elements that bubbled in the acid. After the reactions were complete, a wooden splint was lit using a Bunsen burner and the masking tape was removed. The glowing splint was held just inside the mouth of the test tube. Observations were recorded and the waste was disposed of. Observations Part A: Reactivity of Metals in Water Element Calcium Magnesium Copper Physical properties Solid, silver, metallic, soft Long, thin, solid, smooth, malleable, silver, shiny Thin, solid, malleable, bronze in colour, shiny Reaction Upon putting the calcium in water, it bubbled and released gas. The water in the test tube was displaced when it was held above the calcium while it was reacting pH before reaction: 7 pH after reaction: 8/9 There was no reaction when the magnesium was placed in the water, therefore no gas. There was no reaction when the copper was placed in the water, therefore no gas. Part B: Reactivity of Metals in Hydrochloric Acid Element Zinc Iron Aluminum Magnesium Physical properties Solid, shiny, silver in colour Rusty, small individual solid flakes, dull Powder, grey/silver Long, thin, solid, smooth, malleable, silver, shiny Reaction Slow reaction, but it eventually started to bubble. Very slow reaction. Few bubbles were produced. Though there was no observed reaction from the aluminum and the hydrochloric acid, further research shows that it does react. It releases heat and the water evaporates. Upon putting the magnesium in the hydrochloric acid, it quickly started to bubble and fizz. Throughout the observation, it also releasedlots of heat. Analysis The objective of the experiment was to observe what happens when seven metals are placed in water and/or hydrochloric acid. Calcium, magnesium, and copper were all placed in water and of the three, only the calcium reacted. Zinc, iron, aluminum, and magnesium were placed in the hydrochloric acid. There was a reaction in every test tube, but the magnesium showed the greatest reaction with iron being the least reactive to the acid. Even though the metals may be in the same period, how it reacts to the water or hydrochloric acid depends on the type of metal. Error(s) When the lit splint was held just above the mouth of the test tube with the magnesium, there was no reaction, unlike the high-pitched popping sounds emitted by other groups’ experiments. Perhaps this is because the masking tape was removed from the mouth of the test tube minutes before the wooden splint was lit, giving the collected gas enough time to diffuse. A reason for the zinc and aluminum not reacting with the hydrochloric acid could have involved dirty glassware or the lack of time allowed for observation. Conclusion The purpose of this lab was to explore the patterns in reactivity in the periodic table. Through careful observation and planning during this experiment, the hypothesiswas deemed successful. Not all metals react with water and hydrochloric acid. Questions 1. Rank the elements tested in Part A from least reactive to most reactive. 1. From the elements tested in Part A, calcium reacted the most with water (it produced hydrogen), while both copper and magnesium did not have a reaction. 1. Sort the elements that you tested into groups. State the apparent order of reactivity as one proceeds down a group. Does reactivity increase or decrease? 1. Group 2 (alkaline earth metal): magnesium, calcium Group 8: iron Group 11 (coinage metal?): copper Group 12: zinc Group 13: aluminum For the metals, the reactivity increases as one proceeds down the group. This is because it is easier for electrons to be given farther down the periodic table. 1. Sort the elements that you tested into periods. State the apparent order of reactivity as one proceeds across a period. Does reactivity increase or decrease? 1. Period 3: magnesium, aluminum Period 4: calcium, iron, copper, zinc For the metals, the reactivity decreased as one moves from left to right across periods, because it is easier for electrons to be taken away farther to the left of the periodic table. 1. Is the solution that is produced when a metal reacts with water acidic or basic? 1. The solution that is produced when a metal reacts with water is basic, because the pH increased. 1. Based on your gas test observation in Step 16, what gas is produced? 1. Based on the gas test observation in Step 16, hydrogen gas is produced. This can be determined by the ‘squeaky pop’ sound that is heard when the lit wooden splint is placed at the mouth of the test tube. 1. Rank the elements tested in Part B from least reactive to most reactive. 1. In part B, copper would be the least reactive, because there was little-to-no reaction with it and the hydrochloric acid. Iron is the second least reactive, as its reaction was slow but there were a few observed bubbles. Zinc would be the second most reactive and magnesium the most reactive, with a quick reaction and the plenty of heat that was released. 1. Does the reactivity increase or decrease as one moves across a period of elements? 1. As one moves across the periodic table from left to right, for the metals, the reactivity decreases, this is because the farther to the left, the easier it is for electrons to be given or taken away. But for the non-metals, the reactivity increases(excluding the nobles gases), because the farther right, the higher the electronegativity, resulting in a greater exchange of electron. 1. Based on your gas test results, what is the gas produced in these reactions (Steps 16 and 25)? 1. Based on the gas test results and the similar ‘squeaky pop’ sound the elements emitted, the gas produced from the magnesium and hydrochloric acid reaction and also the calcium and water reaction is hydrogen gas. 1. Does the reactivity increase or decrease as one moves down a group of elements? 1. As one moves down a group of elements on the periodic table, for the metals, the reactivity increases, this is because the farther down, the easier it is for electrons to be given or taken away. But for the non-metals the reactivity decreases as one goes down because the farther up, the higher the electronegativity, resulting in a greater exchange of electron. 1. Evaluate this investigation. Did the design enable you to collect enough evidence to answer the questions? How could it have been improved? Would your suggested improvements raise any safety concerns? 1. The design was decent, but it did provide all the evidence needed to answer all the questions; a few of the questions required further research. I think the investigation could have been improved by writing clearer instructions and being more descriptive to avoid confusion. Also, students should be able to experiment with different metals to help them expand their understanding of the reactivity of metals in water and hydrochloric acid (this may raise a few safety concerns). 1. Predict what might happen if you were to drop a piece of potassium (or lithium) into a beaker of water. 1. Because potassium is an alkaline metal (lithium as well), it is extremely reactive. I predict that dropping it in water would cause it to react quickly and intensely, and produce hydrogen gas. 1. Connect the trends observed in Parts A and B to atomic radius, ionization energy, and electron affinity. Write a paragraph to explain the trends. 1. The elements moving from left to right across a period, the atomic radius decreases, as does the ionization energy(the nucleus of the atom gains protons).The atomic radius increases moving down a group, but the ionization energy decreases moving down a group (gains protons and new energy shells of electrons).And opposite to the ionization energy, electron affinities increase from left to right across a period. Electron affinities change little moving down a group, becoming slightly more positive.

Building a power base Essay Example | Topics and Well Written Essays - 500 words

Building a power base - Essay Example This will happen if and only if I strictly follow the power-building plan that I have. Being a professional and team player tops the list of actions in the power-building plan. To become a supervisor, one needs to prove to the organization that they know their work and that they can work well with the other members of the staff. I am no exception to this and so I have to behave in a manner that shows that I understand what is expected of me. To achieve this, I need to have a decent dress code that will show that I am a nurse; I have to come to work on time and spend extra time socializing with my patients and knowing what is affecting them. To show my professionalism, I need to respect my supervisor and always ensure that I follow their instructions carefully. Every place has its set rules and the healthcare agency is not an exception. To show that I have the ability to become a supervisor, I have to ensure that I know the hospital rules and follow them effectively. This includes reporting time, the dressing code, the way to interact with the patients and the entire w orkforce (Yoder. 2011). Effective communication is one most important element in achieving the goals. This means that I have to effective communicate with all the players in the agency. I have to ensure that through my communication I am able to recognize ranks and ensure that I do not spoil things with my communication. Getting outside help is also important. I have to look at various supervisors and what they did to achieve their current positions. After this, I have to develop leadership qualities. There is no better way of doing this than following the rules of the agency. I also have to ensure that I always see problems in the agency and report them for fixture. Ensuring that the needs of the workforce are met is also an important tool as it allows one to be loved by other members of the workforce. Lastly, I have to get empowerment from other

Principles of Microeconomics Essay Example | Topics and Well Written Essays - 1250 words - 1

Principles of Microeconomics - Essay Example The limitations need to be worked upon so that sanity could prevail within the related domains. The limits and constraints that make it so hard to achieve include the fact that man has at times over-utilized these resources which has made them scant. The limitations have come about with the passage of time and need to be analyzed and researched upon properly within the future. 2. A big debate in both politics and economics is the extent to which the government should be involved in stabilizing the economy through taxing and spending measures. Do you think that government is involved too much, too little, or just enough these days? The role of the government within the taxing and spending measures is a bit too much. It should work upon making sure that the goals and objectives of its very basis are being handled well more than anything else. This will resolve a number of disputes and long standing issues within the relevant scheme of things. The economic role should be allotted to the people who can do the best possible jobs. This could even include the relevant departments and units which are specialized to undertake such tasks and activities. This will make sure that the taxing and spending measures are being amicably taken care of within any nation of the world. 3. Over the past several years, prices for personal computers and related computer equipment have fallen dramatically, but suppliers have offered more and more of them for sale. Does this refute the law of supply? Explain how this situation may have occurred in the market for personal computers. The supply and demand philosophy banks on the more the customers buy over a period of time, the demand goes up and the supply becomes lesser. This is vice versa in the case of the supply being more and demand being less, and hence the price variations are very direct and have a long-lasting consequence. The law of supply has not been refuted under such a situation as there is an overall increase in the wake of understanding the supply and demand of personal computers and computer related equipment. The situation has come about in the wake of the personal computers because people have relied more on laptops and hence the price ranges of the personal computers have come down considerably. 4. Discuss this statement: "Health care is too expensive. The government should limit the prices doctors charge so that everyone can afford health care." It is a fact that the price of health care has crossed the limits. This is the reason why doctors have been able to make big bucks out of the related settings that the patients find themselves engulfed within. The role of the government under such situations is of immense significance. This is because the government has to wrest its initiatives more than anything else. It needs to make sure that the health care is reasonably priced and is not too costly for the poor and needy. In fact, the people should receive it free of cost as health is essential oneà ¢â‚¬â„¢s priority number one. The prices that these doctors charge is just too much and the affordability aspect is an important consideration that must be taken into proper perspectives before one can suggest that the health care is not expensive any more. 5. You hear a candidate for the United States Congress state that a tax on corporate stocks is an equitable way for the government to raise revenue, because it only affects the very wealthy. Evaluate this statement. The United States C

Taiwan or hong kong (asian) rituals Essay Example | Topics and Well Written Essays - 2500 words

Taiwan or hong kong (asian) rituals - Essay Example It has to be believed that the concrete religious practices, such as community festivals, calendrical festivals, rites of cosmic renewals, and family oriented and individual religious rituals of Taiwan are culminated from the fusion of local and national traditions. Thus, it is an attempt at unraveling intricacies of rituals in the sphere of: (1) how does the ritual reflect the values of a community; (2) what are the underlying consequences of the ritual; (3) what is the stated purpose of the ritual; and (4) what behavior does this ritual make it seem natural or normal, in the socio-cultural Taiwanese perspective. Anthropologists and sociologists are interested in ritual studies, because discussions about rituals have key cultural importance and social concern. They take ritual events as â€Å"a mirror to reflect the larger problems of particular interests in an ethnographic case that become amenable to analysts† (Husken). Rituals are viewed to act as powerful mechanisms for constructions of the self and the other, of personal and collective identities, and are generally held to have benign effects. They bring core cultural values, ideology, knowledge and dramatic style to bear on real social relationships, problems and difficulties, often at key moments of transition or intensification. Social scientists view that ritual action is a conscious social mechanism of symbolic actions that reinforces the status quo by overwhelming the practitioner with a feeling of moral obligation to adhere to societal sentiments, which stress the importance of maintaining social structure.In short, ritual s are often at the centre of the play of social and cultural forces operating in a society. The cultural attributes of marriage, death, as well as religious practices are considered fundamental to the cultural make-up and identity of a country. Taiwan is a country where past, present and future