Einsteinium Facts - Element 99 or Es

Einsteinium Facts - Element 99 or Es   Einsteinium is a soft silver radioactive metal with atomic number 99 and element symbol Es. Its intense radioactivity makes it glow blue in the dark. The element is named in honor of Albert Einstein.   Discovery Einsteinium was first identified in the fallout from the first hydrogen bomb explosion in 1952, the Ivy Mike nuclear test. Albert Ghiorso and his team at the University of California at Berkeley, together with Los Alamos and Argonne National Laboratories, detected and later synthesized Es-252, which exhibits a characteristic alpha decay with an energy of 6.6 MeV. The American team jokingly named element 99 pandamonium because the Ivy Mike test had been codenamed Project Panda, but the name they officially proposed was einsteinium, with element symbol E. The IUPAC approved the name but went with the symbol Es. The American team competed with a Swedish team at the Nobel Institute for Physics in Stockholm for credit discovering elements 99 and 100 and naming them. The Ivy Mike test had been classified. The American team published results in 1954, with the test results declassified in 1955. The Swedish team published results in 1953 and 1954. Properties of Einsteinium Einsteinium is a synthetic element, probably not found naturally. Primordial einsteinium (from when the Earth formed), if it existed, would have decayed by now. Successive neutron capture events from uranium and thorium could theoretically produce natural einsteinium. At present, the element is only produced in nuclear reactors or from nuclear weapon tests. It is made by bombarding other actinides with neutrons. Although not a lot of element 99 has been made, it is the highest atomic number produced in sufficient quantities to be seen in its pure form. One problem studying einsteinium is that radioactivity of the element damages its crystal lattice. Another consideration is that einsteinium samples quickly become contaminated as the element decays into daughter nuclei. For example, Es-253 decays into Bk-249 and then Cf-249 at the rate of about 3% of the sample per day. Chemically, einsteinium behaves much like other actinides, which are essentially radioactive transition metals. Its a reactive element that exhibits multiple oxidation states and forms colored compounds. The most stable oxidation state is 3, which is pale pink in aqueous solution. The 2 phase has been shown in a solid state, making it the first divalent actinide. The 4 state is predicted for the vapor phase but has not been observed. In addition to glowing in the dark from radioactivity, the element releases heat on the order of 1000 watts per gram. The metal is noteworthy for being paramagnetic. All isotopes of einsteinium are radioactive. At least nineteen nuclides and three nuclear isomers are known. The isotopes range in atomic weight from 240 to 258. The most stable isotope is Es-252, which has a half-life of 471.7 days. Most isotopes decay within 30 minutes. One nuclear isomer of Es-254 has a half-life of 39.3 hours. The uses of einsteinium are limited by the small quantities available and how quickly its isotopes decay. It is used for scientific research to learn about the elements properties and to synthesize other superheavy elements. For example, in 1955 einsteinium was used to produce the first sample of the element mendelevium. Based on animal studies (rats), einsteinium is considered a toxic radioactive element. Over half of ingested Es is deposited in bones, where it remains for 50 years. A quarter goes to the lungs. A fraction of a percent goes to reproductive organs. About 10% is excreted. Einsteinium Properties Element Name: einsteinium Element Symbol: Es Atomic Number: 99 Atomic Weight: (252) Discovery: Lawrence Berkeley National Lab (USA) 1952 Element Group: actinide, f-block element, transition metal Element Period: period 7 Electron Configuration:  [Rn] 5f11  7s2 (2, 8, 18, 32, 29, 8, 2) Density (room temperature):  8.84  g/cm3 Phase: solid metal Magnetic Order: paramagnetic Melting Point:  1133  K   (860  Ã‚ °C, 1580  Ã‚ °F) Boiling Point:  1269  K (996  Ã‚ °C, 1825  Ã‚ °F)  predicted Oxidation States:  2,  3, 4 Electronegativity: 1.3 on the Pauling scale Ionization Energy:  1st:  619  kJ/mol Crystal Structure: face-centered cubic (fcc) References: Glenn T. Seaborg, The Transcalifornium Elements., Journal of Chemical Education, Vol 36.1 (1959) p 39.

Definition and Examples of Abstract Nouns in English

Definition and Examples of Abstract Nouns in English In English grammar, an abstract noun  is a  noun or noun phrase  that names an idea, event, quality or concept - for example, courage, freedom, progress, love, patience, excellence and friendship.  An abstract noun names something that cant be physically touched. Contrast that with a  concrete noun. According to A Comprehensive Grammar of the English Language, abstract nouns are typically non-observable and nonmeasurable.†Ã‚  But, as James Hurford explains, the distinction between abstract nouns and  other common nouns is relatively unimportant, as far as grammar is concerned. (James Hurford, Grammar: A Students Guide. Cambridge University Press, 1994) Examples and Observations Love is an irresistible desire to be irresistibly desired.(Robert Frost)Her face, which was long and dark chocolate brown, had a thin sheet of sadness over it, as light but as permanent as the viewing gauze on a coffin.(Maya Angelou, I Know Why the Caged Bird Sings. Random House, 1969)Creativity requires the courage to let go of certainties.(Erich Fromm)Silence can be  a source of great strength.Men say they love independence in a woman, but they dont waste a second demolishing it brick by brick.(Candice Bergen, quoted by Catherine Breslin in The Mistress Condition. Dutton, 1976)When love is gone, theres always justice.And when justice is gone, theres always force.And when force is gone, theres always Mom.Hi, Mom!(Laurie Anderson, O Superman. 1981)Fear is the main source of superstition, and one of the main sources of cruelty. To conquer fear is the beginning of wisdom.(Bertrand Russell, An Outline of Intellectual Rubbish. Unpopular Essays. Simon Schuster Inc., 1950) More than any other time in history, mankind faces a crossroads. One path leads to despair and utter hopelessness. The other, to total extinction. Let us pray we have the wisdom to choose correctly.(Woody Allen, My Speech to the Graduates. The New York Times, 1979) The Nature of Abstract Nouns Abstract and concrete are usually defined together or in terms of each other. The abstract is that which exists only in our minds, that which we cannot know through our senses. It includes qualities, relationships, conditions, ideas, theories, states of being, fields of inquiry and the like. We cannot know a quality such as consistency directly through our senses; we can only see or hear about people acting in ways that we come to label consistent. (William Vande Kopple, Clear and Coherent Prose. Scott Foresman Co., 1989) Countable and Uncountable Abstract Nouns Although abstract nouns tend to be uncountable (courage, happiness, news, tennis, training), many are countable (an hour, a joke, a quantity). Others can be both, often with shifts of meaning from general to particular (great kindness/many kindnesses).(Tom McArthur, Abstract and Concrete. The Oxford Companion to the English Language. Oxford University Press, 1992) Inflection of Abstract Nouns [M]any abstract nouns are generally not inflected for number (lucks, nauseas) or they do not occur in the possessive (the commitments time). (M. Lynne Murphy and Anu Koskela, Key Terms in Semantics. Continuum, 2010) The Grammatical Unimportance of Abstract Nouns [R]ecognizing abstract nouns is relatively unimportant, as far as grammar is concerned. This is because there are few, if any, particular grammatical properties that affect just the set of abstract nouns. ... One suspects that the reason for the recurrent mention of abstract nouns is the clash between their (abstract) meanings and the traditional definition of a noun as the name of a person, place or thing. The existence of obvious nouns such as liberty, action, sin and time is a sore embarrassment to such a definition, and the pragmatic response has been to apply a distinctive label to the problematic words. (James R. Hurford, Grammar: A Students Guide. Cambridge University Press, 1994) The Lighter Side of Abstract Nouns It represents Discipline, said Mr. Etherege. ... And to the uninstructed mind, Uniformity. His abstract nouns were audibly furnished with capital letters. But the latter notion is fallacious.No doubt, said Fen. He perceived that this incipient homily required punctuation rather than argument.Fallacious, Mr. Etherege proceeded, because the attempt to produce Uniformity inevitably accentuates  Eccentricity. It makes Eccentricity, as it were, safe. (Bruce Montgomery [aka Edmund Crispin], Love Lies Bleeding. Vintage, 1948)

Controls for Information Security Essay Example | Topics and Well Written Essays - 500 words

Controls for Information Security - Essay Example The combination of preventive, detective and corrective controls are suitable for the security of an organization’s information system because the multiple control layers work together to avoid a single point of failure. The detective controls comprise of log analysis, intrusion detection systems and constant monitoring of the system (Romney, et al, 2012). Similarly, the preventive mechanism identifies the probability of an attack and initiates control measures, such as IT solutions, physical security or change of controls and management. The preventive control functions towards identifying and blocking the malicious risk. It involves the observation of safe computing practices that hinder unwarranted access by others. After the prevention measures, the corrective controls ensure that the affected data can be restored to usefulness. Considering this, the combination or the detective, preventive and corrective controls work through the entire systems by recognizing threats both internally and externally. Controls must always be in place in an organizational system since they protect the deletion, copying or transfer of data. This implies that controls also serve as data security that may reach the hands of unauthorized parties. It is essential to install all the control strategies that function together towards achieving the organizational performance (Romney, et al, 2012). This is because it is easy to thwart fraud cases that might involve the fabrication of data to suit the cybercriminals.

Aircraft Maintenance Training Needs Coursework

Aircraft Maintenance Training Needs - Coursework Example . . . . . . . . . . . . . . . . . . . . . . . . . 43 4. PRESENTATION, ANALYSIS AND INTERPRETATION OF DATA . 45 Presentation of the study . . . . . . . . . . . . . . . . . . . . . . . . . 45 5. SUMMARY, CONCLUSIONS, AND RECOMMENDATIONS . . . . 60 SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 THE FINDINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Testing Hypothesis No. 1 . . . . . . . . . . . . . . . . . . . . . . . 61 Testing Hypothesis No. 2 . . . . . . . . . . . . . . . . . . . . . . . 62 Testing Hypothesis No. 3 . . . . . . . . . . . . . . . . . . . . . . . 62 Testing Hypothesis No. 4 . . . . . . . . . . . . . . . . . . . . . . . 62 Testing Hypothesis No. 5 . . . . . . . . . . . . . . . . . . . . . . . 62 Testing Hypothesis No. 6 . . . . . . . . . . . . . . . . . . . . . . . 63 Testing Hypothesis No. 7 . . . . . . . . . . . . . . . . . . . . . . . 63 CONCLUSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 RECOMMENDATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 64 Abstract The interest of this dissertation is to ascertain the needs of aircraft maintenance training in both the commercial and light aviation sectors in the U K. Apparently there is huge shortage of licensed engineers as per... The aerospace industries which is at the forefront of wealth production worldwide, and continue to be of crucial importance to the economic strength of the UK rely on skills in a sound understanding of engineering and science areas relating to aircraft design and manufacture. Avionics institutions productions and outputs in terms of graduates in the field of engineering were surveyed by way of mailed questionnaires to gain the perspective on the prospects of manpower supply to satisfy the demand for avionics engineers. It was also geared towards awareness of the limiting factors confronting potential candidates for training. The study revealed that: all male composed the aircraft maintenance engineers' population; Most of the respondents were 36 - 40 years old (16 or 53.33 %) which is the highest value, and it is in close proximity to the retirement age; Majority of the respondents were married; Majority of the respondents were bachelor's degree holder only; The present numbers of master's degree holder and post graduate degree holder will increase in the near future; Minimal numbers of qualified aircraft maintenance engineers are in the UK airlines; The higher is the educational attainment of the respondents, the lower is their frequency; The respondents know that there is aircraft maintenance training in

Analyzing Talk Among Friends Essay Example for Free

Analyzing Talk Among Friends Essay In the preceding example, the utterance Ahma git me Ð ° gig! was interpreted differently by the participants in the interaction. So the question to be asked about Ahma git me Ð ° gig! is, what does it mean (how did the listeners arrive at their understandings), and what particular features of language and/or social situation signal that meaning? To arrive at an understanding of what the utterance meant, interpretations are not constructed solely from the speakers perspective but are also gathered from the participants who heard the utterance. Later, others may be asked to listen to Ð ° recording and share their understandings of the utterance(s). Then, the analysts task is to make an in-depth study of the selected instances of verbal interaction, observe whether or not actors understand each other, elicit participants interpretations of what goes on, and then (Ð °) deduce the social assumptions that speakers must have in order to act as they do, and (b) determine empirically how linguistic signs communicate in the interpretation process ( Gumperz 1982: 35). In the analysis of the example noted here, for instance, Gumperz was able to show that most white speakers did not seem to understand the utterance other than as Ð ° lapse into dialect or saw the switch to Black English as Ð ° rejection of whites and the speaker addressing himself only to other black students. Black students, however, explained the students remark as an attempt to justify himself by appealing to others in the group, Іm just playing the game as we blacks must do if we are to get along in Ð ° white world, while also identifying Ð ° particular rhythm in the utterance that led them to their interpretation. Thus, features of language carry social meaning that plays Ð ° significant role in interpreting what speakers mean (see Gumperz 1982: 29-37 for Ð ° detailed explanation of this example and its interpretation). While this example should make any interpreter wonder how they are interpreting meaning of speakers who differ in some way, such as region of the country, age, ethnicity, gender, my point here is about the analysis of natural language and how discourse analysts determine what speakers mean and how language conveys elements of meaning. Using these methods to analyze interpreted discourse is Ð ° way of understanding how the participants in an interpreted interaction understand each other at the time. Gumperz proposed that Ð ° theory of discourse must take into account both the linguistic and socio-cultural knowledge that an interlocutor must have to maintain involvement in an interaction, Accounting for such knowledge demonstrates two things: (1) meanings are jointly constructed between speakers as they talk, and (2) conversations contain internal evidence of their outcomes, that is, the ways in which participants share, partially share, or do not share, mutual conventions for meaning and how they succeed in achieving their communicative ends. Tannen reached Ð ° similar conclusion. She called such linguistic and social knowledge conventions by which meaning is communicated in social interaction (1984: 151). In Conversational Style: Analyzing Talk Among Friends, Tannen (1984) analyzed two and Ð ° half hours of conversation over Ð ° Thanksgiving dinner. She defined and discussed features of conversational involvement, such as topic, pacing (how relatively fast or slow one spoke), narrative strategies (in what order events are told, how speakers made their point, etc.), and expressive paralinguistic (intonation, pitch, and others), which together pattern in different ways the speech of different participants. For three of the speakers, these features combined in acceptable ways of having Ð ° conversation, but three other speakers experienced the same conversation as unusual and their participation faltered. When speakers share conventions for signaling meaning, they can be said to share Ð ° conversational style ( Tannen 1984). Tannens approach to studying discourse, modeled after Gumperz, is characterized by (1) recording naturally occurring conversations; (2) identifying segments in which communication may seem to flounder or be troublesome; (3) looking for patterned differences in signaling meaning that could account for trouble; (4) playing the recording, or segment of it, back to participants to elicit their spontaneous interpretations and reactions, and also, perhaps later, eliciting their responses to the researchers interpretations; and (5) playing segments of the interaction for other members of the cultural groups represented by the speakers to discern patterns of interpretation. Tannens study suggests that within an interpreted interaction speakers who do not share Ð ° common language also have conversational styles that they do not necessarily share with the interpreter. For example, Tannen (1994) has demonstrated that Ð ° discourse approach to gender and language, following in the tradition of Gumperz, can be understood by looking for differences in the way women and men signal meaning in conversation. This has great implications for interpreters: what happens when interpreter’s do not share Ð ° conversational style with one or both speakers? Many interpreters are women who interpret for men. Do they understand male strategies for asking questions or giving information? Do men understand female strategies? As her research demonstrates, the notion of cross-cultural encompasses more than just speakers of different languages or from different countries; it includes speakers from the same country of different class, region, age, and even gender ( Tannen 1985: 2o3). Gumperzs analysis of brief utterances located within Ð ° social scene and Tannens analysis of Ð ° single extended interaction via the same analytical and interpretive framework provide Ð ° rigorous methodology for analyzing conversational interactions, including interpreted conversations. Their emphasis on soliciting participant reactions and interpretations, along with close transcription of contextualization cues in language, provides Ð ° framework for going beyond Ð ° mere structural description of an interpreted encounter to an intense scrutiny of turn-taking as experienced by the participants, including phenomena such as simultaneous turn-taking.

The Victory of Banquo in Shakespeares Macbeth :: Free Essay Writer

The Victory of Banquo in Macbeth      Ã‚  Ã‚   The audience sees in Shakespeare's Macbeth that the one who ends up victorious, the one whose family will provide kings for the kingdom, is the innocent, spiritually inclined Banquo. It is he about whom this essay will deal.    In Shakespeare and Tragedy John Bayley discusses Banquo shortly before his murder:    [. . .] like Banquo, who, in the tense hour before the murder, expresses in more forceful form the idea of evil speculation and possibility as ranging in the mind:    Merciful powers, Restrain in me the cursed thoughts that nature Gives way to in repose. II.i.7-9    At such a moment the activities of the mind become almost palpable and express themselves in bodily form, as they do in the other two mind tragedies. In the speech which he imagines the thoughts that may come to him when he goes to rest, Banquo hands his sword to his son Fleance, and then - with a dream-like precision - hands over his belt with its dagger too:    Hold, take my sword. There's husbandry in heaven; Their candles are all out. Take thee that too. (188-89)    Lily B. Campbell in her volume of criticism, Shakespeare's Tragic Heroes: Slaves of Passion, discusses how fear enters the life of Banquo with the murder of Duncan and his two attendants:    And as Lady Macbeth is helped from the room, we see fear working in the others. Banquo admits that fears and scruples shake them all, even while he proclaims his enmity to treason. But Banquo fears rightly the anger or hatred of the Macbeth who has power to do him harm. (222)    Clark and Wright in their Introduction to The Complete Works of William Shakespeare comment that Banquo is a force of good in the play, set in opposition to Macbeth:    Banquo, the loyal soldier, praying for restraint against evil thoughts which enter his mind as they had entered Macbeth's, but which work no evil there, is set over against Macbeth, as virtue is set over against disloyalty.   (792)    In Fools of Time: Studies in Shakespearean Tragedy, Northrop Frye explains the rationale behind Banquo's ghost in this play:    Except for the episode of Hercules leaving Antony, where mysterious music is heard again, there is nothing really supernatural in Shakespeare's tragedies that is not connected with the murder of the order-figures.

Man is like a fraction

Man Is like a fraction whose numerator Is what he Is and whose denominator is what he thinks. The greater the denominator, the lesser the fraction. † -Lev Tolstoy We should take note that in a fraction, as the denominator becomes larger, the value of the traction becomes lesser. Man is also like a traction as what Lev Tolstoy said in his quotation. Life Is full of choices, full of situations. Where sometimes all our way to run away is by pretending, Pretending is one way of escaping. In my life, I have met people who are pretentious. I don't understand why they are like that.Why o people appear to be something theyre not? Does it make them feel better about themselves or does It make them have something to hide behind? People feel that if they can lead a life that isnt their own and be pulled along by someone else they may be able to achieve better things. Therefore, hiding behind masks makes people lives a lot easier, they don't have to face up to doing something wrong. The ap pearance of being greater than you are has led to many unfortunate happening in the world around us. Nevertheless it shows us how appearing to be something you're not, can become your reality and even the world's reality.We need to be less influenced by the world around us. Reality is hard to find as people are working their way around It, forcing themselves to appear to be something they're not. If we feel that we can get ahead by doing this then we should realize that we will only get hurt. Let us not be a person who sees himself larger than who he really is. Iva Rhiana C. Santiago LG 4218 APOLLONIUS OF PERGA As what I have researched, Apollonius ot Perga was a Greek geometer and astronomer noted for his writings in the conic section. It was him who gave the ellipse. the parabola, and the hyperbola the names by which we know them.And these things are our lessons this term. The work of Apollonius of Perga has had such a great impact on the development of mathematics, that he is kno wn as â€Å"The Great Geometer†. In fact, in his book Conics he Introduces terms, such as parabola, ellipse, and hyperbola that are still used today. Apollonius also was an important person in founding Greek mathematical astronomy. He used geometrical models to explain planetary theory. He made a lot of contributions In his times that until now we are benefiting from them. We are still learning from them. He did his work very well.He was able to help many people nowadays even f he existed a long, long time ago. His contributions to mathematics helped many people to become very good like him. Mathematician like ‘Of2 Apolllonlus 0T Perga makes numerous contrl learn and it helped me a lot. Iva Rhiana C. Santiago 4218 The Importance Of Saving outlons. HIS conlcs Tor me were easy to For me, teenagers or children nowadays should learn how to save money since young. Saving money helps to lessen the heavy responsibility of our parents as what I have observed. We can also buy th eir own items without asking money from our parents.Saving money also helps us to be more independent. Although I did not complete the required number of weeks I have to deposit, I think I was only able to deposit four times out of eight weeks, I am lucky to learn a lesson from this. I can benefit from saving money at young age. I realized that after high school, college is expensive and then â€Å"real† life begins, with expenses such as food and rent. If I can hold onto a good portion of the money I earned as a teen, going to college and buying a house will be much easier. The earlier I will begin saving, the more time the money has to grow.