Determination of Partition Coefficient

Determination of Partition Coefficient

Breast Reconstruction :: essays research papers

Post-mastectomy breast reconstruction is not a simple procedure. Reconstruction of a breast is done when the natural breast has to be removed due to cancer or other diseases. Breast removal is referred to as mastectomy. The best candidates are women whose cancer has been eliminated by breast removal. Women with other health conditions such as obesity, high blood pressure or smoking, may be advised to wait. Surgeons are now able to create a breast that can come close to looking like a natural breast. Reconstruction can be done immediately following mastectomy. The patient will wake up with a breast mound already in place. So the woman does not have to go through the trauma of waking up without her other breast. A tissue expander is inserted following the mastectomy to prepare for reconstruction. The expander is gradually filled with saline through a separate tube to stretch the skin enough to accept an implant beneath the chest muscle. After the surgery the breast mound is restored. The areola is reconstructed at a later date. With flap surgery, tissue is taken from the back and tunneled to the front of the chest wall to support the reconstructed breast. The transported tissue forms a flap for a breast implant, or it may provide enough bulk to form the breast mound without an implant. Tissue may be taken from the abdomen and tunneled to the breast or surgically transplanted to form a ne w breast mound. After surgery, the breast mound, and areola are restored. Scars at the breast, and abdomen will fade with time, but may never disappear entirely. Your reconstructed breast may feel firmer and look rounder or flatter than your natural breast. It may not have the same shape as your breast before mastectomy, and it will not match your other breast. But the difference will only be noticeable to you. For most mastectomy patients, breast reconstruction dramatically improves their appearance and quality of life following surgery.

Future Goals of Nursing Essay

During my childhood and early teenage years, I can remember my English teachers asking things like â€Å"what do you want to be when you grow up?† and â€Å"What do you want to study in college?† As a child I would give a quick sentence or a couple of words of how I wanted to be a teacher, a counselor, or a marine biologist. As a student I have been expected to outline and prepare written papers about what I wanted to be when I grow up. My answers varied each and every year. I can remember many kids saying they wanted to become a nurse or a doctor. I can never remember wanting to become a nurse myself. It is through hearing the many stories I have heard from family members that are in the medical field and a sister that became a CAN and had planned to be a nurse that made me really begin thinking about nursing as a possible career. The further I learned and read about nursing, the more I was intrigued. I chose to take Health Occupations 1 at KEC this year, my senior yea r in High School. By the end of this course I will become a CNA. Through this experience, it has not only provided me a deeper look into the medical field, but also has given my hands-on experience. I have come to realize that working in this environment and doing some of the dirtiest jobs seems to be a natural fit for me. I have surprised myself at my ability to do some of the jobs that most dread. It is my personality to want to help others and be there for them during their hard times, being the medical field can allow me to do just that. I am aware that the training required to become a nurse is challenging and I am ready and willing to take this challenge on to get the training needed in order to become a nurse. I am excited about learning all that I need to learn. My future goal is to go through medical school, and become a Union Registered Nurse where I can help others and be in the midst of the medical field, which I love.

Horny Toad Lizard Facts (Phrynosoma)

The horny toad is actually a lizard (a reptile) and not a toad (an amphibian). The genus name Phrynosoma means toad bodied and refers to the animals flattened, round body. There are 22 species of horned lizard and several subspecies. Fast Facts: Horny Toad Lizard Scientific Name: PhrynosomaCommon Names: Horny toad, horned lizard, short-horned lizard, horntoadBasic Animal Group: ReptileSize: 2.5-8.0 inchesLifespan: 5-8 yearsDiet: CarnivoreHabitat: Deserts and semi-arid parts of North AmericaPopulation: Decreasing to stableConservation Status: Least Concern to Near Threatened Description The horny toad has a squat, flattened body and a blunt nose like a toad, but its life cycle and physiology are that of a lizard. Each species is distinguished by the number, size, and arrangement of the crown of horns on its head. The lizard has spines on its back and tail that are modified reptile scales, while the horns on its head are true bony horns. Horny toads come in shades of red, brown, yellow, and gray and can change their color to a certain extent to camouflage themselves against their surroundings. Most horny toads are less than 5 inches long, but some species reach 8 inches in length. Habitat and Distribution Horny toads live in arid to semi-arid regions of North America, from southwestern Canada through Mexico. In the United States, they occur from Arkansas west to California. They live in deserts, mountains, forests, and grasslands. Diet The lizards are insectivores that prey primarily on ants. They also eat other slow-moving ground-dwelling insects (sow bugs, caterpillars, beetles, grasshoppers) and arachnids (ticks and spiders). The toad either slowly forages or else waits for prey and then catches it with its sticky, long tongue. Horny toads use their sticky tongues to catch prey. Â  ebettini / Getty Images Behavior Horny toads feed early in the day. When ground temperature becomes too hot, they seek shade or dig themselves into the ground to rest (aestivation). In the winter and when temperatures drop in the evening, the lizards brumate by digging into the ground and entering a period of torpor. They may cover themselves completely or leave only their nostrils and eyes exposed. Horny toads have interesting and distinctive methods of self-defense. In addition to camouflage, they use their spines to make their shadows blurry and to deter predators. When threatened, they puff up their bodies so their large size and spines make them harder to swallow. At least eight species can squirt a directed stream of blood from the corners of their eyes up to 5 feet. The blood contains compounds, presumably from the ants in the lizards diet, that are distasteful to canines and felines. Reproduction and Offspring Mating occurs in late spring. Some species bury eggs in the sand, which incubate for several weeks before hatching. In other species, eggs are retained in the females body and the young hatch shortly before, during, or after egg-laying. The number of eggs varies by species. Between 10 and 30 eggs may be laid, with an average clutch size of 15. The eggs are about a half inch in diameter, white, and flexible. Hatchlings are 7/8 to 1-1/8 inches long. They have horns like their parents, but their spines develop later. The hatchlings receive no parental care. Horny toads reach sexual maturity when they are two years old and live between 5 and 8 years. Juvenile horny toads resemble their parents, but are smaller in size. Â  Design Pics / Getty Images Conservation Status Most horny toad species are classified as least concern by the IUCN. Phrynosoma mcallii has a conservation status of near threatened. There is insufficient data to evaluate Phrynosoma ditmarsi or the Sonoran horned lizard, Phrynosoma goodei. Some species populations are stable, but many are decreasing. Threats Humans pose the greatest threat to horny toad survival. The lizards are collected for the pet trade. In areas near human habitation, pest control threatens the lizards food supply. Horny toads are also affected by fire ant invasions, as they are selective about the ant species they eat. Other threats include habitat loss and degradation, disease, and pollution. Sources Degenhardt, W.G., Painter, C.W.; Price, A.H. Amphibians and Reptiles of New Mexico. University of New Mexico Press, Albuquerque, New Mexico, 1996.Hammerson, G.A. Phrynosoma hernandesi. The IUCN Red List of Threatened Species 2007: e.T64076A12741970. doi:10.2305/IUCN.UK.2007.RLTS.T64076A12741970.enHammerson, G.A., Frost, D.R.; Gadsden, H. Phrynosoma mcallii. The IUCN Red List of Threatened Species 2007: e.T64077A12733969. doi:10.2305/IUCN.UK.2007.RLTS.T64077A12733969.enMiddendorf III, G.A.; Sherbrooke, W.C.; Braun, E.J. Comparison of Blood Squirted from the Circumorbital Sinus and Systemic Blood in a Horned Lizard, Phrynosoma cornutum. The Southwestern Naturalist. 46 (3): 384–387, 2001. doi:10.2307/3672440Stebbins, R.C. A Field Guide to Western Reptiles and Amphibians (3rd ed.). Houghton Mifflin Company, Boston, Massachusetts, 2003.