Mermaid Purse vs. Skate Case

Mermaid Purse vs. Skate Case Perhaps youve found a mermaids purse on the beach. Mermaids purses blend really well with seaweed, so you may also have walked right by one. Upon further investigation, you can learn more about what they are. The enchantingly named structures are the egg cases of skates and some sharks. This is why they are also known as skate cases. While some sharks bear live young, some sharks (and all skates) release their embryos in leathery egg cases that have horns and sometimes long tendrils at each corner. The tendrils allow them to anchor to seaweeds or other substrates. Each egg case contains one embryo. The case is made up of a material that is a combination of collagen and keratin, so a dried egg case feels similar to a fingernail.   In some areas, such as in the Bering Sea, skates seem to lay these eggs in nursery areas.  Depending on the species and sea conditions, the embryo may take weeks, months or even years to fully develop. When they hatch out of one end, the baby animals look like miniature versions of their skate or shark parents.   If you find a mermaids purse on the beach or are lucky enough to see a live one in the wild or in an aquarium, look closely if the developing skate or shark is still alive, you may be able to see it wiggling around.  You also may be able to see it if you shine a light through one side. The egg cases on the beach are often light and already opened, which means the animal inside has already hatched and left the egg case.   Where to Find a Mermaids Purse Mermaids purses usually get washed or blown to the high tide line of the beach, and they often get wrapped up in (and blend in well with) seaweeds and shells. As youre walking along the beach, walk in the area where shells and ocean debris seems to have washed up, and you might be lucky enough to find a mermaids purse. You may be more likely to find one after a storm.   Mermaids Purse Identification Found a mermaids purse on the beach and want to know where it is from?  Skate and shark species vary by region, but there are some identification guides out there for you beachcombers wanting to identify your finds. Here are the ones Ive found so far: Egg Cases of Alaska (great pamphlet about where baby skates come from)Shark Trust Egg Case Identification Key (UK) Conservation Factors To learn about population sizes and reproduction, some organizations have launched citizen science efforts to have people report and send in egg cases they find on the beach. Click on the links below for more information on reporting mermaids purses that you may find. The Great Egg Case Hunt (Shark Trust, UK)Marine Dimensions (Ireland) References and More Information Florida Museum of Natural History. Shark Biology. Accessed February 28, 2015.Florida Museum of Natural History. Ray and Skate Biology. Accessed February 28, 2015.Shark Trust. The Great Egg Case Hunt Project: Frequently Asked Questions. Accessed February 28, 2015.Weis, J. S. Do Fish Sleep? Fascinating Answers to Questions About Fishes. Rutgers University Press. 217pp.

Name the year - Emphasis

Name the year Name the year Almost a month into the first year of the new decade and the time may have come to pick a side: is it twenty-ten or two thousand and ten? Most people seem to be automatically going with the latter, but they are wrong to do so, claims one American group. This is NAGG (the National Association of Good Grammar), a small group that may actually just be one bloke, a cat and a kettle (they dont even have their own website). Despite their size, they are reportedly very vocal on this subject. Theyre adamant it should be twenty ten and are, frankly, exceedingly put out that we spent the last ten years saying two thousand. Founder Tom Torriglia points out that we are not following the pattern of the twentieth century. Prince never sang, Tonight were going to party like its one thousand nine hundred and ninety-nine, thats for sure.

The risks associated with ionising radiation in medical imaging Assignment

The risks associated with ionising radiation in medical imaging practice, and the precautions required to protect aginst them - Assignment Example Due to the in effective training and inadequate awareness given to the staff as well as the patients they are exposed to more unnecessary radiation (Koenig et al 2001). Ionizing radiation is used in applications such as medical imaging in the hospitals and to perform diagnostic imaging. In the medical imaging, the most common forms of the ionizing radiations are the gamma rays and the x-rays. These medical imaging practices are important in the medical field because of the determination of the diseases and different injuries in the human body. However, aside from these benefits and life saving tool, these ionizing radiations has certain limits and conditions to be applied on the patients and people. The reason for this is due to the fact that high doses of these ionizing radiations are responsible for the formation of cancers. The ionizing radiation in the medical imaging is found to be one of the most important discoveries of the medical science. Even with the use of the new technol ogy, the equipments are highly capable of posing high radiation doses if the treatment procedure is not well maintained and followed (ICRP 2000). Whereas there is a strong debate going that the usage of these ionizing radiations may cause genetic mutations and cancers. As it is well known that there is no such dose below which there is no risk of any harm to the exposed one or a zero risk (ICRP 1990). So it is important to avoid the exposure to these ionizing radiations but how can this be possible. Of course someone that needs medical attention and for different diagnosis, one has to go through these treatments, but on the first hand the primary cure is to improve the life styles and the determinants that may cause the health damage to be improved. Below is the typical effective dose from x-ray radiation. Exam Effective Dose mSv (mrem)1 Chest (LAT) 0.04 (4) Chest (AP) 0.02 (2) Skull (AP) 0.03 (3) Skull (Lat) 0.01 (1) Pelvis (AP) 0.7 (70) Thoracic Spine (AP) 0.4 (40) Lumbar Spine (A P) 0.7 (70) Exam Effective Dose mSv (mrem)2 Mammogram (four views) 0.7 (70) Dental (lateral) 0.02 (2) Dental (panoramic) 0.09 (9) DEXA (whole body) 0.0004 (0.04) Hip 0.8 (80) Hand or Foot 0.005 (0.5) Abdomen 1.2 (120) By improving our health status and also improving our physical mental and social states, we can avoid these threats even at the first place to be exposed by such ionizing radiations even for the diagnosis. However the main concern regarding the ionizing radiation is the induced cancer among the young children from the CT scans. As the young children are more susceptible to get the cancer as compared to the elders, so the more controlled experiments and discoveries are to be made in order to avoid this risk of more cancer due to these ionizing radiations. But another debate that why the need for these medical imaging are increasing day by day even with the more sophisticated technology and new era of research, does that means that science failed to improve the health st atus of the world’s population even with the advancement. The answer could be controversial as the health is comprehensive phenomena and does not depend on one facto but many. So there is a need to improve the

Development of Prostitution Essay Example | Topics and Well Written Essays - 1000 words

Development of Prostitution - Essay Example s â€Å"profession† vary greatly among those involved, the most common of which relate to poverty and destitution, although according to an unnamed Google-sponsored informative website (2010), other reasons such as a desire for drugs and/or alcohol, also exist. Despite its controversial nature, it is sometimes pondered whether its legalization would do greater harm than good. Thus, this article aims to discuss the pros and cons if ever prostitution were to be legalized, and to come up with a stand. Asia, America, Europe, wherever one goes, a very much active sex industry is sure to exist. Most industrialized nations have cities with their own red-light district, complete with clubs with neon signs, where those interested can experience a close encounter of the carnal kind. But regardless of where it occurs, prostitution is an issue worthy of note. Where it started, why it goes on, and why anyone would be drawn to it in the first place are just some questions people ask pertaining to this subject. An article by Iris Hickenbottom (2002) states that this particular trade dates back to ancient Mesopotamia, emerging in Victorian-era America in the middle of the 19th century. Public perception of the sex industry and of prostitutes in general varied greatly within this period, ranging from understanding and sympathy to indifference and finally to flat, outright rejection. While they had hitherto been thought of as life-draining demons in human guise, early feminists instead viewed them as victims of a male-dominated society – a viewpoint which slowly but surely altered the status of women all over. The same site goes on to note Dr. William Sanger, whose research on the topic was highly regarded due to being both accurate and detailed. Among the most important things he discovered was the general profile of a prostitute: they were said to mostly be in their late teens or early adulthood, and usually came from a background of poverty and illiteracy. Since at the time,

Ancient Indian Mathematics Essay Example for Free

Ancient Indian Mathematics Essay There are opposing views prevalent regarding the prominence of mathematics in ancient India. One, there are those who make excessive claims for the antiquity of Indian mathematics with the motive of emphasizing the uniqueness of Indian mathematical achievements. Whereas, the other conflicting views denies the existence of any ‘real’ Indian mathematics before A. D. 500. This view is the result of deeply entrenched Euro centrism that does not negotiate with the idea of independent developments in early Indian mathematics. Whereas mathematics grew out of philosophy in ancient Greece, it was an outcome of linguistic developments in India. In fact the algebraic character of ancient Indian mathematics is but a byproduct of the well-established linguistic tradition of representing numbers by words. ? Around 800 B. C. Vedic mathematics declined and Jains School of mathematics gradually which was to do notable work in the field. ? From about 200 B. C. was period of instability and fragmentation due to foreign invasions but also of useful cross cultural contacts. Probably the only piece of existing mathematical evidence from this period is the Bakhshali manuscript. ? This period ranges from 3rd to 12th centuries and is referred to as the classical period of Indian civilization. Mathematical activities reached a climax with the appearance of the famous quartet: Brahmagupta, Mahvika and Bhaskracharya. Indian work on astronomy and mathematics spread westward, reaching the Islamic world where it was absorbed, refined and augmented before being transmitted to Europe. This last period described as the medieval period of Indian history, saw the migration of astronomy and mathematics from the north to south. Particularly in present day state of Kerala, this was a period marked by remarkable studies of infinite series and mathematical analysis that predated similar works in Europe by about three hundred years. Harappan society was a highly organized society. There is every possibility that the town dwellers were skilled in mensuration and practical ar ithmetic of a bid similar to what was practiced in Egypt and Mesopotamia. Archaeological findings from that period provide the following indications of the numerate culture of that society: ? It shows uniformity of weights over such a wide area and time which is quite unusual in the history of metrology. Taking 27. 584 grams as a standard, representing 1, the other weights form a series of 0. 05, 0. 1, 0. 2, 0. 5, 2, 5, 10, 20, 50, 100, 200 and 500. Such standardization and durability is a strong indication of a numerate culture with wellestablished, centralized system of weights and measures. Scales and instruments for measuring length have also been discovered with remarkably high accuracy. A notable feature of Harappan culture was its extensive use of kiln-fired bricks and the advanced level of its brick-making technology. These bricks are exceptionally well baked and of excellent quality and may still be used over and over again provided some care is taken in removing them in the first place. Fifteen different sizes of Harappan bricks have been identif ied with standard ratio of the three dimensions as 4:2:1. It was thought until recently that from them evolved first the Bakhshali Number system and then the Gwalior system which is recognizably close to our present day number system. In both Bakshati and Gwalior number systems, ten symbols were used to represent 1 to 9 and zero. With them it became possible to express any number, irrespective of its largeness, by a decimal place value system. Long lists of number- names for powers of 10 are found in various early sources. In the Ramayana, it is reported that Rama had an army of 1010 +1014 +1020 +1024 +1030 +1034 +1040 +1044 +1052 +1057 +1062 +5 men. The very existence of names for powers of ten up to sixty two indicates that the Vedic Indians were quite at home with very large numbers. This is to be compared with ancient Greeks, who had no words for numbers above the myriad (104). The Jains who came after the Vedic Indians were particularly fascinated by even larger numbers which were intimately tied up with their philosophy of time and space. For units of measuring time, the Jains suggested following relationship: 1 purvis = 756 * 1011 days 1 shirsa prahelika = (8,400,000)28 purvis The last number contains 194 digits! The word numeral system was the logical outcome of proceeding by the multiples of 10. Such a system presupposes a scientifically based vocabulary of number names in which the principles of addition, subtraction and multiplication are used. Â  Due to oral mode of preserving and disseminating knowledge, the wordnumeral system persisted in India. As a replacement to this, a new concrete system was devised to help versification and memory, known as bhutasamkhya, wherein numbers were indicated by well-known objects or ideas.

Canterbury Tales - Downfall of the Church in Chaucer’s General Prologue :: Canterbury Tales

Canterbury Tales - Downfall of the Church in Chaucer’s General Prologue Light-hearted yet bitingly satirical, Chaucer’s â€Å"General Prologue† to his Canterbury Tales is a commentary on the corruptions of the Church at the time. Chaucer, being of noble estate, retains his witticism in his narrator. The narrator devotes many a line to the vivid portrayals of the Prioress and the Frere. Through the actions of these two members of the clergy, it is seen that the lust for material goods, the need for flaunting one’s estate, and the development of hypocrisy all contribute to the shaking of the Church’s foundations. Enfolded in the coils of luxury, the Prioress and the Frere can hardly recall their missions as part of the clergy. Is not gluttony evil in the eyes of the Church? Although not allowing any â€Å"morsel from hir lippes falle† (Chaucer, l. 128) can be viewed as a sign of â€Å"wasting not† in the Prioress, Chaucer’s narrator’s detailed and realistic descriptions of the Prioress’s table manners impress upon one that food and drink is the quintessence of this woman’s faith in the Church. The Frere, too, delights in merry living. Not only does he know the taverns in every town, he also knows â€Å"every hostiler and tappestere,/Bet than a lazar or a beggestere† (ll. 240-242). The Frere spends most of his time playing the rote and singing ballads (ll. 236-237); he also showers â€Å"faire wives† with gifts such as â€Å"knives† and â€Å"pinnes† (ll. 233-234). How is it then that the Frere needs to be g? He is the â€Å"beste beggere in his hous† (l. 252), and he can coax a â€Å"widwe [who] hadde nought a sho† (l. 255) to give him money. Is this not ridiculous when, during love-dayes, the Frere can - like a butterfly breaking out of its cocoon - shed his begging clothes and wear ceremonial gowns as rich and as fine as a maister’s or a pope’s? Contrary to the Church’s belief in not hoarding material goods, the Prioress delights in dressing fashionably in a neat cloak, with coral around her arms, and a gold brooch about her neck (ll. 157-162). As feasting and dressing shrewdly seem to occupy the bulk of these religious’ time, it must be that the Church is now based on hedonism instead of faith and humility!

Million

Since this is a website concerning the sell of pixels for a dollar and having the public buy and advertise their pages or business for only a dollar. According to the innovator, who thought of the idea to pay for his college degree achieved a sold out audience achieving one million dollars. The milliondollarsailor.com is trying to achieve the same goal but to use the funds generated to give 50% to the creator of the site and the other half to the Navy and Marine Corps Relief Society. Although, the intention for the purpose of the money is a great idea, the case arises in how to promote a new idea in informational technology. First, the website should be clear on its goal and purpose for the site. Presently, the website lacks explanation and what the customer should see as the outcome. If the person does not go to the milliondollarhomepage.com, than it is not aware of the end result. The site is sort of an advertising mall that you pick the box that can get you the product. Marketing a website like this a bit of the problem because what is the gimmick to attack people to it. In order, for someone to want to buy a pixel it must have a business or be offering service in order to advertise. However, for this site good way to spread the word about the site is through search engines, spreading flyers to the public, and placing banners through sources like myspace.com and sites that support the armed forces. Another way how the site can get promotion is through college students that are studying web design and marketing strategies to design links to the site from their pages to connect to yours. Also by offering that the site is a permenanted avenue for them to get hits to their website or corporate sites people are more likely to buy because it is something that will always generate customers. The most important tool your website can do is provide information to those interested in purchasing a pixel and letting them know it is a great investment that will generate business relationships or contacts. In the long run, the customers generate more business and the creator and the corps get a winning result. References: Tew Alex (2005) The Million Dollar Page; Copyrighted by Alex Tew 2005. The Million Dollar Sailor (2006) The Million Dollar Sailor: Copyrighted by milliondollarsailor.com http://www.themilliondollarsailor.com/link.php