Saturday, October 5, 2019
Corporate Social Responsibility Strategy for your financial Assignment
Corporate Social Responsibility Strategy for your financial organisation for the 21st Century - Assignment Example suggests that corporations have a duty to society to act in ways that benefit everyone and promotes social justiceââ¬âto try to neuter the capitalist impulses that allow companies to be competitive and make profits. Nevertheless, many companies have done it to try to burnish their reputations in crowded marketplaces. The truth is that there are many ways to go about instilling this kind of thinking within the company. Part of it can be external, with us investing in causes that we think are appropriate. Another way to do it is through values and codes of ethics. Some say that spending money on CSR is a waste and that we should focus on improving profitability and returning money to our shareholders. That idea may be short-sighted. As one leading researcher recently wrote: Opinion and research has been divided regarding the relationship between CSR and financial performance. On the one had, conventional wisdom would assume that CSR has been considered as a zero-sum tradeoff with profitability: more money spent on CSR means less spent on increasing market share, or re-investment. Conversely, academic thought has also suggested that those companies, who appear to be more responsible in the areas of environment and societal behavior, would more attractive for investors, and therefore perform better financially (Cavett-Goodwin 2007). All of these are important considerations as we look at the pluses and minuses of this possible strategy in the next section. We must be mindful that CSR is not zero-sum, but that everyone can benefit from using it. It can do a lot of good for a great many people. A question that has troubled many people since the dawn of time is how should a person lead a good, ethical life? Furthermore, how should a business behave in an ethical manner? There are as many theories as there are grains of sand on the beach, but a few ideas over the years have been more popular than others. Some people are born into religions where these questions are
Friday, October 4, 2019
Critical Resource Review Essay Example | Topics and Well Written Essays - 500 words
Critical Resource Review - Essay Example (McGrath, 2006, p. 8) Though bullying has been detected in all levels of the educational system, it is widespread in middle school, as pointed out in three studies. There is, then, this marked increase in the incidence of bullying as students graduate from elementary and move on to middle school. (Monitor Online website, 1999) In general, schools can do more to address student bullying within its campus by fostering organizational trust. The more the students trust their teachers to be concerned with their safety and well-being, the less prone they become to being victimized by bullies. The conclusion of a study contends that trust in the faculty has its way of serving as protection for the students against the assaults of bullies, whether verbal or physical. (Smith & Birney, 2005, p. 480) Other than working on the studentsââ¬â¢ trust in the school faculty, the school can implement some other forms of intervention to address bullying amongst them. Examples of such interventions include curriculum-based strategies to increase the level of awareness of the students regarding bullying as a possible barrier against their overall development. Thus, video films can be shown, theatre plays can be staged and open forums can be held to encourage students to be open about bullying as a threat that would have to be tackled by the faculty and the students together. (Smith & Sharp, 1994, p. 24) These collective actions of the school teachers against bullying must be established as a program that would be continually advocated for the welfare of the students. Schools must send out the messages that they will fight the occurrence of all sorts of bullying activities not just for a time but perpetually (Olweus, 1993, p. 77). Meanwhile, the bully whose behavior has gone unchecked is generally set to grow up as an antisocial person who has no adequate capability for empathy with others and who, therefore, turns out to be selfishly intolerant of
Thursday, October 3, 2019
The Natural Key passage analyisis Essay Example for Free
The Natural Key passage analyisis Essay In this passage of Bernard Malamuds The Natural, Roy Hobbs is in a batting slump. Though at the end of the passage, he rises from his slump to once again hit a home run. This event occurs during his game in Chicago, right after the beginning of his batting slump which in turn occurs right after his first and only date with Memo. This game is the first encounter between Roy and Iris Lemon, the true vegetative goddess who is a suitable partner for Roy. This passage is located in the Falling Action of Freytags pyramid that starts off with a dark and gloomy mood as a result of the diction that is used, cursed, booed, harrowed, sick and miserable. The employments of these words introduce the passage as dark period of time which directly reflects to both the mental and physical state that Roy is in at the time. As mentioned above, at the end of this passage, Roy rises from his batting slump, which makes this a turning point for Roy that propels the book towards its climax. This passage could be considered a turning point for Roy not only because he rises from his slump, but also because he finally meets his rightful vegetative goddess who gives him strength to hit the homerun at the end of the passage. Although this passage is not only the turning point for Roy, but also a comparison between Memo Paris and Iris Lemon. His fate is determined by his final decision between the two women and this passage acts as a sign for both the reader and Roy that Iris Lemon is his true vegetative goddess who he must marry in order to achieve his full potential as a vegetative god who can rejuvenate the Fisher King, symbolizing Pop Fisher. In the first line of this passage, Wonderboy is compared to a sagging baloney. This comparison is ambiguous because one can interpret it as if Wonderboy physically looks like a sagging baloney or that Wonderboy like King Arthurs Excalibur which was powerful and firm, is now weak and soft. However, the comparison between Roys baseball bat and a sagging baloney has a greater meaning. When Wonderboy is compared to a sagging baloney, one can say that this is a reference to Wonderboys phallic representation. The comparison between Roys Excalibur as well as manhood, a symbol of his masculine strength and sagging baloney degrades Roys strength and power as a vegetative god. This further shows his loss of power during his slump, as he felt sick. The reason for his slump is directly related to Memo Paris. Following his first and only date with Memo, he is overjoyed, even though it was disastrous. She claims to be strictly a dead a mans woman. This man refers to the dead Bump Bailey, who symbolizes those without life. This indicates that she is not the destined and right woman for Roy, as he is the vegetative god, the god of life. His existence is contradictory to her ideal man, which means that they are not destined to be together. She further states that her breasts are sick and Dont touch it When he tries to touch them, a womans breast symbolizes her fertility and thus Memos womanhood is sick. Therefore, it would be contradictory for Roy to be with Memo because he is the vegetative god and his vegetative goddess must be a woman with a strong life force and fertility. After the date, Memo rejects Roy and claims that she is going to see Gus Sands. Following this, Roy becomes troubled and falls into a batting slump as a result of Memos negligence towards Roy. After the second strike that Roy hits, a lady in the stands hesitantly rose for the second time. This lady later on turns out to be Iris Lemon, Roys destined wife and vegetative goddess. When she rises again, Roy stole a quick look and gains hope, because he became aware that the night had spread out in all directions and was filled with an unbelievable fragrance. In the presence of Iris Lemon, Wonderboy regains its hardness and power and shoots the ball through the light and up into the dark, like a white star seeking an old constellation. When Iris, the vegetative goddess who like Roy is a force of life and rejuvenation stands up, a stranger next to her feels a strong sexual urge. This shows that Iris is a true vegetative goddess whose very presence causes a stranger to feel a strong sexual urge. Her very presence also rejuvenates Wonderboy, Roys metaphorical phallus. Iris, who has such a strong life force, brought a child into the world at an early age, becomes a grandmother at the age of thirty three and she also reveals at the end of the book that I am pregnant from their one and only encounter on the beach. This transfer of life and strength to Roy and Wonderboy from Iris allows Roy to hit the baseball so hard, that it metaphorically flies into space, towards a distant star. This description of the baseball that is hit into space is so implausible that it seems godly and brings a magic realism and supernatural touch into Roys abilities. Roy who smashes the baseball so hard was only able to do so due to Iriss help, because at the presence of his vegetative goddess, he can truly achieve his full potential as a vegetative god who is destined to revive the Knights and Pop Fisher like Sir Perceval who is destined to revive King Fisher and the wasteland. As mentioned earlier, Memo is a destructive force that sucks the life and energy out of Roy and as a result, he falls into a batting slump. Her surname, Paris, is a mythological allusion to the Greek mythology of the city Troy. Paris was a young prince of Troy who abducted the queen of Sparta, Helen who was considered to be the most beautiful woman on earth. Because of this, Menelaus, the king of Mycenaean Sparta along with his brother and the Greek army invaded Troy and tore it down into ruins. In the process, most of Pariss family was killed, all due to the fact that he fell in love with Helen. This mythological reference is a warning to both the reader and Roy that his childish lust for Memo will eventually lead to his ultimate downfall. This warning is also given out by Pop Fisher after Roys date with Memo, she is unlucky and always has been and I think that there is some kind of whammy in her that carries her luck to other people. Thats why I would like you to watch out and not get too tied up with her. In Greek mythology, the sirens are bird-women who sing songs to enchant sailors to their death through shipwreck. Memo is similar to the sirens in a way that she is the temptress who like the sirens lead Roy to his death, that is, the death of his baseball career. Memo is the temptress who leads Roy to his downfall, but Iris on the other hand can be seen as her direct opposite, the woman can lead Roy to fulfill his destiny, that is to heal Pop Fisher and the Knights. This healing to the Knights is accomplished when The long rain had turned the grass green and as the grass on the field grew, the team starts win games. When Iris hesitantly rose for the second time, she is seen wearing a red dress with dark hair. After Bump died Memo is seen wearing black mourning dress and black pyjamas with red hair. Iriss hair having the colour as Memos dress and Memos hair having the same colour of Iriss dress is a reference to the fact that Memo and Iris are complete opposites, while one sucks the energy and life out of Roy, the other rejuvenates and provides a life-giving force that gave him energy. Although towards the end of the book, Roy makes the wrong choice of choosing Memo instead of Iris due to his childish lust and sexual impulse. He continues to seek to break records instead of focusing on his true goals to rejuvenate Pop Fisher and the Knights. Despite Iriss gentleness, powers that helped him though his slump and dissimilarity from Memo as she is not the type of dame I always fell forthey werent like you. He ignores the hints that Iris is the one that he is destined to be with, because he is afraid of the responsibilities of being with Iris, as she is a grandmother, which in turn would make him a grandfather. Warned multiple times, by Pops warning, she weakens a man, her surname name Paris, her sick breast and her complete opposite nature to Iris, Roy does not realize that Memo is the temptress and his true goals as a vegetative god along with his potential destiny with Iris until it was too late.
Water fluoridation
Water fluoridation ABSTRACT The safety and efficacy of water fluoridation has been a topic of great controversy throughout Americas communities. Scientific evidence has shown that ingesting low to moderate levels of fluoride can benefit the dental health of a community, especially those populations in a community that may be classified as having low socioeconomic status. Children in all areas, but especially those with low SES, are at greatest risk for developing dental caries and having a community water fluoridation program (CWFP) will help them reduce their dental caries. Moderation of fluoride ingestion for individuals is the key. Low to moderate daily ingestion of fluoride, averaging 1.0 mg/liter per day is optimum. Dental and skeletal fluorosis can occur if ingestion levels are greater than 3.0 mg/liter per day for long periods of time. This is a discussion on the safety and efficacy of water fluoridation. INTRODUCTION This commentary presents the on-going controversy on community water fluoridation in the United States, and I will attempt to analyze science-based evidence in support of water fluoridation. There have always been questions on the safety and efficacy of fluoride in drinking water, some school of thought believes that fluoridation has some adverse effects to exposed human populations, especially in infants and children. Another school of thought believes that water fluoridation is essential in preventing tooth decay, and therefore the practice should be sustained. According to the Center for Disease Control and prevention (CDC) water fluoridation is one of the 10 great public health achievements of the 20th century in the United States (CDC, 1999), which is attributable for increased lifespan of Americans by 25 years ( Bunker et al., 1994). This paper will discuss science-based evidence that proves the efficacy and safety of water fluoridation among children as well as offer some reco mmendations to the various stakeholders. POSITION STATEMENT Water fluoridation is the adjustment of the concentration level to the optimally regulated level of which the naturally occurring fluoride presents in public or community drinking water supplies. In most cases, deflouridation is needed when the naturally occurring fluoride level exceeds recommended limits. The recommended fluoride concentration in drinking water by the U.S. Public Health Service (PHS) is 0.7-1.2mg/L, to effectively prevent dental caries and minimize the occurrence of dental fluorosis (NRC, 2006). Low decay rates were found to be associated with continuous use of water with fluoride content of 1ppm (Meskin, 1995). There has been serious questions as to the efficacy of fluoride intervention in preventing both tooth decay, as it benefit is said to be merely cosmetic or topical (CDC, 1999). Such topical effect of fluoride can be achieved by the use tooth without the risking the overexposure from ingested fluoride (NRC, 2006). However, it has also been reported that fluor ide exposure provides both systemic and topical protection. Ingested fluoride deposited on tooth surface during tooth formation, and fluoride contained in saliva provides long-lasting systemic protection against booth tooth decay than topical application using tooth paste or fluoride foams (CDC, 2001). WHAT IS FLUORIDE Fluoride is a naturally occurring element. It is found in rocks and soil everywhere. Fluoride can be found in fresh water and ocean water. Naturally occurring fluoride levels ranges from 0.1ppm to over 12ppm (NRC, 2006).Fluoride is present in the customary diets of people and in most portable water sources. The average dietary intake of fluoride is approximately 0.5mg daily from either naturally occurring fluoride in the water or the fluoride found in produce. It is also a normal component of tooth enamel and bone studies have shown that the calcified tissues of both enamel and bone are made up of a combination of hydroxyl- and fluor-apatites of varying composition depending on the abundance of fluoride at the site of formation. These tissues are the principal sites of deposition of fluoride (NRC, 2006). HOW FLUORIDE PREVENTS AND CONTROLS DENTAL CARIES Dental caries is an infectious, transmissible disease in which bacterial by-products (i.e., acids) dissolve the hard surfaces of teeth. Unchecked, the bacteria can penetrate the dissolved surface, attack the underlying dentin, and reach the soft pulp tissue. Dental caries can result in loss of tooth structure, pain, and tooth loss and can progress to acute systemic infection. Cryogenic bacteria (i.e., bacteria that cause dental caries) reside in dental plaque, a sticky organic matrix of bacteria, food debris, dead mucosal cells, and salivary components that adheres to tooth enamel. Plaque also contains minerals, primarily calcium and phosphorus, as well as proteins, polysaccharides, carbohydrates, and lipids. Cryogenic bacteria colonize on tooth surfaces and produce polysaccharides that enhance adherence of the plaque to enamel. Left undisturbed, plaque will grow and harbor increasing numbers of cryogenic bacteria. An initial step in the formation of a carious lesion takes place when cryogenic bacteria in dental plaque metabolize a substrate from the diet (e.g., sugars and other fermentable carbohydrates) and the acid produced as a metabolic by-product demineralizes (i.e., begins to dissolve) the adjacent enamel crystal surface (CDC,2009). Demineralization involves the loss of calcium, phosphate, and carbonate. These minerals can be captured by surrounding plaque and be available for reuptake by the enamel surface. Fluoride, when present in the mouth, is also retained and concentrated in plaque. Fluoride works to control early dental caries in several ways. Fluoride concentrated in plaque and saliva inhibits the demineralization of sound enamel and enhances the remineralization (i.e., recovery) of demineralized enamel (Featherstone, 1999 Koulourides, 1990). As cryogenic bacteria metabolize carbohydrates and produce acid, fluoride is released from dental plaque in response to lowered pH at the tooth-plaque interface. The released fluoride and the fluoride present in saliva are then taken up, along with calcium and phosphate, by de-mineralized enamel to establish an improved enamel crystal structure. This improved structure is more acid resistant and contains more fluoride and less carbonate (Featherstone, 1999). Fluoride is more readily taken up by demineralized enamel than by sound enamel. Cycles of demineralization and remineralization continue throughout the lifetime of the tooth. Fluoride also inhibits dental caries by affecting the activity of cryogenic bacteria. As fluoride concentrates in dental plaque, it inhibits the process by which cryogenic bacteria metabolize carbohydrates to produce acid and affects bacterial production of adhesive polysaccharides. In laboratory studies, when a low concentration of fluoride is constantly present, one type of cryogenic bacteria, Streptococcus mutans, produces less acid. Whether this reduced acid production reduces the carcinogenicity of these bacteria in humans is unclear (Van Loveren, 1990). Saliva is a major carrier of topical fluoride. The concentration of fluoride in ductal saliva, as it is secreted from salivary glands, is low approximately 0.016 parts per million (ppm) in areas where drinking water is fluoridated and 0.006ppm in non fluoridated areas. This concentration of fluoride is not likely to affect cryogenic activity. However, drinking fluoridated water, brushing with fluoride toothpaste, or using other fluoride dental products can raise the concentration of fluoride in saliva present in the mouth 100- to 1,000-fold. The concentration returns to previous levels within 12 hours but, during this time, saliva serves as an important source of fluoride for concentration in plaque and for tooth remineralization (Murray,1993). Applying fluoride gel or other products containing a high concentration of fluoride to the teeth leaves a temporary layer of calcium fluoride-like material on the enamel surface. The fluoride in this material is released when the pH drops in the mouth in response to acid production and is available to remineralize enamel. In the earliest days of fluoride research, investigators hypothesized that fluoride affects enamel and inhibits dental caries only when incorporated into developing dental enamel (i.e., preeruptively, before the tooth erupts into the mouth) (Murray,1993). Evidence supports this hypothesis, but distinguishing a true preeruptive effect after teeth erupt into a mouth where topical fluoride exposure occurs regularly is difficult. However, a high fluoride concentration in sound enamel cannot alone explain the marked reduction in dental caries that fluoride produces . The prevalence of dental caries in a population is not inversely related to the concentration of fluoride in enamel, and a higher concentration of enamel fluoride is not necessarily more efficacious in preventing dental caries (Mcdonagh etal.,2000). The laboratory and epidemiologic research that has led to the better understanding of how fluoride prevents dental caries indicates that fluorides predominant effect is post eruptive and topical and that the effect depends on fluoride being in the right amount in the right place at the right time. Fluoride works primarily after teeth have erupted, especially when small amounts are maintained constantly in the mouth, specifically in dental plaque and saliva (Mcdonagh etal., 2000). Thus, adults also benefit from fluoride, rather than only children, as was previously assumed. RISK FOR DENTAL CARIES The prevalence and severity of dental caries in the United States have decreased substantially during the preceding 3 decades. National surveys have reported that the prevalence of any dental caries among children aged 1217 years declined from 90.4% in 19711974 to 67% in 19881991; severity (measured as the mean number of decayed, missing, or filled teeth) declined from 6.2 to 2.8 during this period (Burt, 1989). These decreases in caries prevalence and severity have been uneven across the general population; the burden of disease now is concentrated among certain groups and persons. For example, 80% of the dental caries in permanent teeth of U.S. children aged 517 years occurs among 25% of those children. Populations believed to be at increased risk for dental caries are those with low socioeconomic status (SES) or low levels of parental education, those who do not seek regular dental care, and those without dental insurance or access to dental services (Meskin,1995). Persons can be at high risk for dental caries even if they do not have these recognized factors. Children and adults who are at low risk for dental caries can maintain that status through frequent exposure to small amounts of fluoride (e.g., drinking fluoridated water and using fluoride toothpaste). Children and adults at high risk for dental caries might benefit from additional exposure to fluoride (e.g., mouth rinse, dietary supplements, and professionally applied products). All available information on risk factors should be considered before a group or person is identified as being at low or high risk for dental caries. However, when classification is uncertain, treating a person as high risk is prudent until further information or experience allows a more accurate assessment. This assumption increases the immediate cost of caries prevention or treatment and might increase the risk for enamel fluorosis for children aged NATIONAL GUIDELINES FOR FLUORIDE USE PHS recommendations for fluoride use include an optimally adjusted concentration of fluoride in community drinking water to maximize caries prevention and limit enamel fluorosis. This concentration ranges from 0.7ppm to 1.2ppm depending on the average maximum daily air temperature of the area (PHS, 1991). In 1991, PHS also issued policy and research recommendations for fluoride use. The U.S. Environmental Protection Agency (EPA), which is responsible for the safety and quality of drinking water in the United States, sets a maximum allowable limit for fluoride in community drinking water at 4ppm and a secondary limit (i.e., non-enforceable guideline) at 2ppm (EPA,1998). The U.S. Food and Drug Administration (FDA) is responsible for approving prescription and over-the-counter fluoride products marketed in the United States and for setting standards for labeling bottled water and over-the-counter fluoride products (e.g., toothpaste and mouth rinse) (ADA,2007). Nonfederal agencies also have published guidelines on fluoride use. The American Dental Association (ADA) reviews fluoride products for caries prevention through its voluntary Seal of Acceptance program; accepted products are listed in the ADA Guide to Dental Therapeutics (ADA, 2007). A dosage schedule for fluoride supplements for infants and children aged 16 years, which is scaled to the fluoride concentration in the community drinking water, has been jointly recommended by ADA, the American Academy of Pediatric Dentistry (AAPD), and the American Academy of Pediatrics (AAP) (Meskin,1995). In 1997, the Institute of Medicine published age-specific recommendations for total dietary intake of fluoride. These recommendations list adequate intake to prevent dental caries and tolerable upper intake, defined as a level unlikely to pose risk for adverse effects in almost all persons. COST-EFFECTIVENESS OF FLUORIDE MODALITIES Documented effectiveness is the most basic requirement for providing a health-care service and an important prerequisite for preventive services (e.g., caries-preventive modalities). However, effectiveness alone is not a sufficient reason to initiate a service. Other factors, including cost, must be considered. A modality is more cost-effective when deemed a less expensive way, from among competing alternatives, of meeting a stated objective (Garcia,1989). In public health planning, determination of the most cost-effective alternative for prevention is essential to using scarce resources efficiently. Dental-insurance carriers are also interested in cost-effectiveness so they can help purchasers use funds efficiently. Because half of dental expenditures are out of pocket (Garcia, 1989), this topic interests patients and their dentists as well. Potential improvement to quality of life is also a consideration. The contribution of a healthy dentition to quality of life at any age has not been quantified, but is probably valued by most persons. Although solid data on the cost-effectiveness of fluoride modalities alone and in combination are needed, this information is scarce. In 1989, the Cost Effectiveness of Caries Prevention in Dental Public Health workshop, which was attended by health economists, epidemiologists, and dental public health professionals, attempted to assess the cost-effectiveness of caries-preventive approaches available in the United States (Downer et al., 1981). Community Water Fluoridation Health economists at the 1989 workshop on cost-effectiveness of caries prevention calculated that the average annual cost of water fluoridation in the United States was $0.51 per person (range: $0.12$5.41) (Burt, 1989). In 1999 dollars, this cost would be $0.72 per person (range: $0.17$7.62). Factors reported to influence the per capita cost included: size of the community (the larger the population reached, the lower the per capita cost); number of fluoride injection points in the water supply system; amount and type of system feeder and monitoring equipment used; amount and type of fluoride chemical used, its price, and its costs of transportation and storage; and expertise of personnel at the water plant. When the effects of caries are repaired, the price of the restoration is based on the number of tooth surfaces affected. A tooth can have caries at >1 location (i.e., surface), so the number of surfaces saved is a more appropriate measure in calculating cost-effectiveness than the number of teeth with caries. The 1989 workshop participants concluded that water fluoridation is one of the few public health measures that results in true cost savings (i.e., the measure saves more money than it costs to operate); in the United States, water fluoridation cost an estimated average of $3.35 per carious surface saved ($4.71 in 1999 dollars). Even under the least favorable assumptions in 1989 (i.e., cities with populations A Scottish study conducted in 1980 reported that community water fluoridation resulted in a 49% saving in dental treatment costs for children aged 45 years and a 54% saving for children aged 1112 years (Downer et al., 1981). These savings were maintained even after the secular decline in the prevalence of dental caries was recognized. The effect of community water fluoridation on the costs of dental care for adults is less clear. This topic cannot be fully explored until the generations who grew up drinking optimally fluoridated water are older. School Water Fluoridation Costs for school water fluoridation are similar to those of any public water supply system serving a small population (i.e., Assessment of the Adverse Health Effects of fluoride Evidence of the adverse health effects of prolonged exposure to high concentrations of fluoride are well documented by several peer reviewed studies, which are examined in this paper. Higher concentrations of total ingested fluoride from potential sources like drinking water, food and beverages, dental-hygiene products such as toothpaste, and pesticide residues can have adverse health effects on humans (NRC, 2006). Some of the adverse health effects of fluoride in drinking water are enamel fluorosis, skeletal fluorosis, bone cancer and bone fracture. (NRC, 2006, PHS, 1991). Fluorosis is caused mainly by the ingestion of fluoride in drinking water (Viswanathan et al., 2009). Fluoride has high binding affinity for developing enamel and as such high concentration of cumulative fluoride during tooth formation can lead to enamel fluorosis, a dental condition from mild to severe form characterized by brown stains, enamel loss and surface pitting (DenBesten Thariani, 1992). These dental ef fects are believed to be caused by the effects of fluoride on the breakdown rates of early-secreted matrix proteins, and on the rates at which the degraded by-products are withdrawn from the maturing enamel (Aoba Fejerskov, 2002). Children are much more at risk of enamel fluorosis, especially in their critical period from 6 to 8 years of age, than adults. Fluoride uptake into enamel is possible only as a result of concomitant enamel dissolution, such as caries development (Fejerskov, Larsen, Richards, Baelum, 1994). There is a 10% prevalence of enamel fluorosis among U.S. children in communities with water fluoride concentrations at or near the EPAs MCLG of 4 mg/L (NRC, 2006). The CDC estimates that 32% of U.S. children are diagnosed with dental fluorosis (CDC, 2005). Today, there are convincing evidence that enamel fluorosis is a toxic effect of fluoride intake, and that its severe forms can produce adverse dental effects, and not just adverse cosmetic effects in humans (NRC, 200 6). Burt and Eklund (1999) states: ââ¬Å"The most severe forms of fluorosis manifest as heavily stained, pitted, and friable enamel that can result in loss of dental functionâ⬠. Epidemiological data from both observational and clinical studies have been examined. Sowers, Whitford, Clark Jannausch (2005) investigated prospectively for four years bone fracture in relation to fluoride concentrations in drinking water in a cohort study, by measuring serum fluoride concentrations and bone density of the hip, radius, and spine. The authors reported higher serum fluoride concentrations in the communities with fluoride concentrations at 4 mg/L in drinking water; and higher osteoporotic fracture rates in the high fluoride areas that were similar to those in their previous studies in 1986 and 1991. It is unclear in their recent study whether existing factors in the population like smoking rates, hormone replacement and physical activity were examined as potential cofounders for fractures. Fasting serum fluoride concentrations are considered a good measure of long-term exposure and of bone fluoride concentrations (Whitford, 1994; Clarkson et al., 2000). Findings by t he Sowers studies were complemented in several ways by Li et al. (2001) in a retrospective cohort ecologic study. The combined findings of Sowers et al. (2005) and Li et al., (2001) lend support to the biological gradients of exposures and fracture risk between 1 and 4 mg/L of fluoride concentration. Evidently, the physiological effect of fluoride on ââ¬Å"bone qualityâ⬠and the fractures observed in the referenced animal studies are consistent with the effects found in the observational studies. RECOMMENDATIONS Before promoting a fluoride modality or combination of modalities, the dental-care or other health-care provider must consider a persons or groups risk for dental caries, current use of other fluoride sources, and potential for enamel fluorosis. Although these recommendations are based on assessments of caries risk as low or high, the health-care provider might also differentiate among patients at high risk and provide more intensive interventions as needed. Also, a risk category can change over time; the type and frequency of preventive interventions should be adjusted accordingly. Continue and Extend Fluoridation of Community Drinking Water Community water fluoridation is a safe, effective, and inexpensive way to prevent dental caries. This modality benefits persons in all age groups and of all SES, including those difficult to reach through other public health programs and private dental care (CDC, 2001a). Community water fluoridation also is the most cost-effective way to prevent tooth decay among populations living in areas with adequate community water supply systems. Continuation of community water fluoridation for these populations and its adoption in additional U.S. communities are the foundation for sound caries-prevention programs. In contrast, the appropriateness of fluoridating stand-alone water systems that supply individual schools is limited. Widespread use of fluoride toothpaste, availability of other fluoride modalities that can be delivered in the school setting, and the current environment of low caries prevalence limit the appropriateness of fluoridating school drinking water at 4.5 times the optimal concentration for community drinking water. Decisions to initiate or continue school fluoridation programs should be based on an assessment of present caries risk in the target school(s), alternative preventive modalities that might be available, and periodic evaluation of program effectiveness (CDC, 2001a). Frequently Use Small Amounts of Fluoride All persons should receive frequent exposure to small amounts of fluoride, which minimizes dental caries by inhibiting demineralization of tooth enamel and facilitating tooth remineralization. This exposure can be readily accomplished by drinking water with an optimal fluoride concentration and brushing with fluoride toothpaste twice daily(CDC, 2001a). Supervise Use of Fluoride Toothpaste among Children Aged Childrens teeth should be cleaned daily from the time the teeth erupt in the mouth. Parents and caregivers should consult a dentist or other health-care provider before introducing a child aged Use an Alternative Source of Water for Children Aged 8 Years Whose Primary Drinking Water Contains >2 ppm Fluoride In some regions in the United States, community water supply systems and home wells contain a natural concentration of fluoride >2ppm. At this concentration, children aged 8 years are at increased risk for developing enamel fluorosis, including the moderate and severe forms, and should have an alternative source of drinking water, preferably one containing fluoride at an optimal concentration. In areas where community water supply systems contain >2ppm but 8 years. For families receiving water from home wells, testing is necessary to determine the natural fluoride concentration (CDC, 2001a). Label the Fluoride Concentration of Bottled Water Producers of bottled water should label the fluoride concentration of their products. Such labeling will allow consumers to make informed decisions and dentists, dental hygienists, and other health-care professionals to appropriately advise patients regarding fluoride intake and use of fluoride products (CDC, 2001). CONCLUDING POSITION STATEMENT When used appropriately, fluoride is a safe and effective agent that can be used to prevent and control dental caries. Fluoride has contributed profoundly to the improved dental health of persons in the United States and other countries. Fluoride is needed regularly throughout life to protect teeth against tooth decay. To ensure additional gains in oral health, water fluoridation should be extended to additional communities, and fluoride toothpaste should be used widely. Adoption of these and other recommendations in this paper could lead to considerable savings in public and private resources without compromising fluorides substantial benefit of improved dental health. What is consistent from the literature review is the fact that infants and children are much more at risk of overexposure and the development of adverse health effects. A community water fluoridation program (CWFP) is very safe and efficient, not only in terms of reducing dental caries, but also on the communitys budg et (CDC, 2001a). A CWFP can especially help those communities who have populations in the low SES category. These populations have children whose parents or guardians dont always have access to dental insurance and so regular dental checkups to curb the dental caries is not always an option. Reducing dental caries before they lead into more extreme oral morbidity can be very beneficial to these children. Implementing a fluoridated water program can also be beneficial to a whole community in terms of saving communities thousands and millions of dollars. Implementing a water program would follow strict guidelines set by the EPA, so the optimum level of fluoride would be followed, staying in the range of 0.7 to 1.2, where people would ingest no more than an average of 1 mg/liter of fluoride per day. Moderation is the key. There are studies confirming that ingestion of fluoride greater than the optimum level could produce dental fluorosis. Though unconfirmed by studies, individual reports have even suggested that ingestion of fluoride >8 mg/liter per day over a long period of time could produce skeletal fluorosis. However, with proper surveillance and reporting of fluoride in water systems, the greater population could be served, increasing the dental health of all individuals, especially the youth and saving dollars from excessive health care costs (ADA, 2009). Remember, a little prevention now can go a long way later. REFERENCES ADA (2005).Fluoridation Facts: ADA statement commemorating the 60th anniversary of community water fluoridation. Retrieved October 19, 2009 from www.ada.org/public/topics/fluoride/facts/fluoridation_facts.pdf ADA.(2007). ADA Guidelines to Dental Therapeutics. Retrieved October 23, 2009 from http://www.ada.org/prof/resources/pubs/advocacy.asp ADA (2009). Fluoride: Natures tooth decay fighter. J of the Am. Dental Ass., 140(1), 126-126. Alphajoh, C.(2009). (PhD Student). Service Learning Activity: Environmental Health. Walden University. Assessed November 13, 2009 from http://environmentalhealthtoday.wordpress.com/2009/05/13/commentary-and-position-statement-on-the-safety-and-efficacy-of-water-fluoridation/ Aoba, T., Fejerskov, O. (2002). Dental fluorosis: Chemistry and biology. Crit. Rev. Oral. Biol. Med., 13(2), 155-170. Bowden, G.(1990). Effects of fluoride on the microbial ecology of dental plaque. J Dent Res 1990; 69(special issue):653ââ¬â9 Brunelle, J.(1987. The prevalence of dental fluorosis in U.S. children. J Dent Res.(Special issue) 68:995. Bunker, J.P., Frazier, H.S., Mosteller, F. (1994). Improving health: measuring effects of medical care. Milbank Quarterly,72, 225-58. Burt, B. (1989).(Ed.). Proceedings for the workshop: Cost-effectiveness of caries prevention in dental public health, Ann Arbor, Michigan, May 1719, 1989. J Public Health Dent 1989; 49(special issue):3317. Burt, B.A., Eklund, S.A. (1999). Dentistry, dental practice, and the community. Philadelphia, Pennsylvania: WB Saunders Company, 204-20. CDC (1999). Ten great public health achievements United States, 1900 1999. MMWR,48(12), 214-243. CDC (2001a). Promoting oral health: intervention for preventing dental caries, oral and pharyngeal cancers and sport-related craniofacial injuries a report on recommendations of the Task Force on Community Preventive Services. MMWR 2001, 50(21), 1-12. CDC. (2001). Recommendations for using fluorideto prevent and control dental
Wednesday, October 2, 2019
divorce :: essays research papers
I intend to look at all the different aspects of children in what would typicaly be called a disfunctional family. There have been many studies on this fact. It has been shown time and time again that children that do not come from stable environments are far more likely to be delinquents. Ã Ã Ã Ã Ã I will refrence several of these studies, such as the studies done in Rochester, Denver and Pittsburgh. This research shows many different ways that emotional family transitions affect childhood behavior. The magnitude of difference between youth with no family transitions and those with many family transitions is amazing. One out of every two marriages today ends in divorce and many divorcing families include children. Parents who are getting a divorce are frequently worried about the effect the divorce will have on their children. During this difficult period, parents may be preoccupied with their own problems, but continue to be the most important people in their children's lives. Children often believe they have caused the conflict between their mother and father. Many children assume the responsibility for bringing their parents back together, sometimes by sacrificing themselves. Vulnerability to both physical and mental illnesses can originate in the traumat ic loss of one or both parents through divorce. With care and attention, however, a family's strengths can be mobilized during a divorce, and children can be helped to deal constructively with the resolution of parental conflict. Ã Ã Ã Ã Ã I will elaborate on how many families can support each other even during these rough transitions. How new partners or parents can get involved and assist the child with the conflict he or she is having. Some kids do not have the opportunity to do certain things because of their families financial situation.
Apert Syndrome :: essays research papers fc
Apert Syndrome (AKA Alport syndrome) is a genetic defect which can be inherited from a parent who has Apert or a fresh mutation. It falls under the broad classification of craniofacial/limb anomalies. Approximately 1 per 160,000 to 200,000 live births inherit it. Some symptoms that Apert sufferers have are various heart defects, ear infections, severe acne, increased incidence of eye injuries, and many more. The skull is prematurely fused and unable to grow normally, and the fingers and toes are fused together in varying degrees. à à à à à If your child gets Apert Syndrome they may have many physical defects as well as a few other problems such as slower learning, a cleft palate, vision problems, and problems with acne during puberty. I donââ¬â¢t think Apert Syndrome children die, expecially because you can pass Apert through genetics. A child with Apert Syndrome could live a pretty normal life. à à à à à The mutation which causes Apert Syndrome is found on chromosome number 10 called Fibroblast Growth Factor Receptor 2 (FGFR2). You have two copies of this gene, one from the mother, one from the father, which is composed of a string of about 2000 of the chemical building blocks that make up the genetic material called DNA. When Apert Syndrome occurs, just one particular building block in one of these two gene copies has been exchanged for another. The other gene is entirely normal. The one tiny change in FGFR2 results in the physical features of Apert Syndrome. à à à à à There is no link between anything the mother does or doesnââ¬â¢t do during her pregnancy to cause Apert. Doctors believe Apert Syndrome occurs when a gene mutates early in the pregnancy. The chances of having a second child with Apert are almost non-existent. However if one parent has Apert Syndrome there is a 50% chance that their child will also have Apert Syndrome. And studies have shown that Apert occurs more often to babies with older fathers.
Tuesday, October 1, 2019
One World
Different factors that affect speed limits on the road s for vehicles. ? Speed limit is the maximum speed at which a vehicle can travel in a certain area. Usually they are indicated by signs next to the road. As you can see from the graph below, speed limits are extremely important. If speed limits wouldnââ¬â¢t be there, a lot more accidents would resolve into death. Speed of the vehicle in miles/hourPercentage of chance of death 207 3044 4086 Those speed limits arenââ¬â¢t just chosen by people. Many things have to be considered while deciding about a speed limit. A lot of environmental and human factors affect those limits.Some of these are: â⬠¢The weather â⬠¢Traffic â⬠¢The driver â⬠¢The vehicle â⬠¢The road condition â⬠¢The type of environment The weather can affect a lot of things that then affect speed limits. This we can notice by the temporarily change in speed limits when there are bad weather circumstances. For example when it is raining very heav ily or there is snow, speed limits will be changed until it stops raining or the snow melts. These changes are usually indicated by electrical signs on the road. Even when it is not indicated, drivers should be responsible enough to slow down in these circumstances.The traffic is also a very important factor. In areas where there is a lot of traffic, the speed limits will generally be set lower. Since in these areas a lot of cars come together at the same time accidents can easily happen. Those areas with a lot of traffic are usually where there are traffic lights or pedestrian crossings. The speed limit will be indicated by a road sign. The driver is one of the most important factors. The bad thing about this factor is that the driver is very unpredictable and the drivers behavior is different all the time.Speed limits can obviously not be set according to every driverââ¬â¢s mood so generally they look at the other factors: weather, traffic, vehicle, road condition and type of e nvironment to predict the driverââ¬â¢s behavior. Generally drivers will tend to drive fast when there isnââ¬â¢t a lot of traffic and when there are no obstacles. This can be very dangerous as unexpected things can happen. In these areas the speed limit could be decreased based on that. The vehicle and the state of the vehicle are also very important when setting speed limits.Obviously the speed limit canââ¬â¢t be set according to every individual vehicle so usually the speed limit is chosen in a way which is not too fast so that the older vehicles can keep up and not too slow so the people with faster vehicles wonââ¬â¢t get annoyed. They also look at the type of area in which the speed limit has to be set. If itââ¬â¢s in a country area with farms, they will take in consideration that also tractors will be driving there and animals can be around. The road condition has to be very good in order to be able to drive on it in the first place.In sandy roads or areas where a lot of mud may occur, the speed limits will be set lower so that the vehicle has a lower chance of slipping. Bumps in the road will also cause the speed limit to be lower than in straight areas. Thatââ¬â¢s also the reason why speed bumps are used. They make people drive slower as they can damage their vehicle in case they donââ¬â¢t. The type of environment has to do with the people that live around but also the buildings that are close or nature around the roads. In urbanized areas where a lot of people live, the speed limit will be set quite low to cause as less danger for pedestrians as possible.Then, talking about buildings in the surrounding area, if there is a mall or a school they will have to take in consideration that children or families with children will be walking around there and crossing the streets. Therefore the speed limits will be adjusted so that even if there is a collision the chance of death wonââ¬â¢t be very high. In some cases, very polluted environ ments can cause the speed limit to be set lower but in some cases even higher. This is because the pollution of a car is lower when it either drives at a very low speed or quite a high speed as shown in the graph below.As the speed increases you can see that the fuel consumption and therefore also the pollution increases. But when you reach a certain speed, that fuel consumption will start decreasing again. So for the least amount of pollution you should driver very slow or faster than about 60 miles per hour. Bibliography onlinemanuals. txdot. gov/â⬠¦ /factors_affecting_safe_speed. htm www. ibiblio. org/rdu/sl-irrel. html www. transport. qld. gov. au â⬠º â⬠¦ â⬠º Safety â⬠º Road â⬠º Speeding www. wellington. govt. nz/projects/new/â⬠¦ /lowerspeed-facts. pdf www. conference. noehumanist. org/â⬠¦ /Proceedings-HUMANIST-S6. 6. pd
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