Aflatoxins Essays

Aflatoxins Essays Aflatoxins Essay Aflatoxins Essay Drumhead Aflatoxins are extremely toxic fungal metabolites found in human and carnal nutrients. Aflatoxin B1 is the most carcinogenic and mutagenic metabolite nowadays in animate being, feedstuff and alterations to Aflatoxin M1 in milk. Aflatoxin M1 has a considerable hygienic hazard for human wellness. Previous researches have been shown different attacks for decontamination of this metabolite. Removal of Aflatoxin M1 by chemical, physical and biological methods has been studied. In old surveies, some species of Fungis and bacteriums have been demonstrated to degrade or adhere the Aflatoxin M1 in liquid media. In this research, two species of Lactic Acid Bacteria ( LAB ) are used. Lactobacillus delbrueckii subsp. Bulgaricus and Streptococcus thermophilus have the of import function in yoghurt production and agitation. In this survey, adhering activities of these two strains will be assessed in milk and yogurt and binding degrees of strains will be compared with each other. Besides, the degra ding ability in milk and yogurt will be considered and compared. Then the treatment will be made that which type of merchandise has been shown more binding ability and analyzing the chief factors and chief grounds that will be done for the achieved consequences. Description of scientific aim Mycotoxins are the secondary toxic metabolite of Fungis, produced in the terminal of logarithmic growing stage. Production of mycotoxins depends on handiness of sufficient and suited of indispensable foods for growing, suited environment such as the specific humidness, temperature, PH, and the presence of toxigenic molds. They affect on the undermentioned factors: growing rate in immature animate beings and babies, interfere in mechanism of organic structure, fondness on immunological system and cause reactivity ( Pier, 1981 ) . Higher degree of these factors leads to decease by damaging the kidney and liver ( Hayes, 1980 and Dvorackova, 1990 ) . Harmonizing to the Food and Agriculture Organization ( FAO ) ,25 % of the universe s harvest contaminated by mycotoxins ( Giessen, 1998 ) . Aflatoxins are one of the chief groups of mycotoxins. They have extremely toxic, mutagenic, carcinogenic, teratogenic and immunosuperssive effects on assorted carnal species and homo. They are produced by three strains of fungi Aspergillus flavus, A.parasiticus and A.nominus. Aflatoxin s best temperature for growing is between 12oc- 40oc ( Koehler et al. , 1985 ) . Four types of toxins have been found in these metabolites which are divided in two groups B ( B1, B2 ) and G ( G1, G2 ) . Aflatoxin B1 has the inveterate toxic effects on mammals produced by A.flavus and A.parasiticus ( Palmgreen and Hayes 1987 ) . Aflatoxin B1 is normally found in carnal grocery and taint occur during harvest home, storage, processing, transporting and silage. Corn, peanuts, cottonseed and rice are the chief harvests contain the high degree of Aflatoxins. Aflatoxin M1 ( AFM1 ) is the hydorxylated metabolite of Aflatoxin B1 in the milk. This metabolite was foremost detected in cow milk. It had been fed the contaminated maize and peanut by Aflatoxin B1. There is a relationship between the sum of AFM1 in the milk and ingestion of contaminated grocery by AFB1 ( Sassahara et al. , 2005 ) . After consumption and digestion of AFB1 by ruminant, it is synthesized to AFM1 in the milk. Metabolizing of AFM1 occur in animate being s liver ( Frobish et al. , 1988. , Van Egmond and Paulsch, . 1986 ) . Previous studied have been estimated that about 0.3- 6.2 % of AFB1 in animate being s ration convert to AFM1 in milk ( Creppy, 2002 ) . AFB1 transition to AFM1 includes four stairss. The carcinogenic authority and toxicity of aflatoxin M1 is 10 times less than aflatoxin B1 but the acutely hepatotoxic is same as AFB1 ( Cullen et al. , 1987 and Lafont et al. , 1989 ) . The European Commission ( EC ) has accepted a bound of 50 ng/l for AFM1 for milk ( European Commission, 2001 ) while the US nutrient and Drug Administration ( US FDA, 1 996 ) has recommended the maximal degree of 500 ng/l for AFM1 in milk. In existent fact, taint of milk and milk merchandises by AFM1 depends on several environmental factors such as season, geographics, state. The degree of AFM1 in dairy merchandises is variable between hot and cold conditions. In spring and summer, animate beings are fed by grass, grazing land, weed while in winter dressed ores used less than leafy vegetables. It causes a autumn in AFM1 degree ( Galvano et al. , 1996 ; Pitet, 1998 ; Sarimehmetoglu et al. , 2003 ) . In old surveies, AFM1 is non destroyed during the heat processes like pasteurization or alterations are non obvious ( Yousef and Marth, . 1989 ) . Besides, in yogurt and cheese production the pollution degree of AFM1 does non alter and remains stable. ( BARBIERI et al, 1994 ; CREPPY, 2002 ; GALVANO et al. , 1996 ; PITET, 1998 ) . Another survey has been confirmed 9 % of addition in AFM1 when the yogurt was produced from contaminated milk ( Van Egmond et al. , 1977 ) . The best manner to avoid the presence of AFM1 in dairy merchandises is to command the carnal grocery during crop, storage and maintain them in suited status to forestall AFB1 formation. Different methods and factors are available and have been tested before to detoxicate the aflatoxins from nutrient and provender stuffs. Three methods are common to utilize to degrade the degree of aflatoxins in nutrients and provenders. Chemical, mechanical and biological methods are applied to diminish the degree of taint in different types of nutrients. The FAO needs some conditions to accept the decontamination procedure. Any detoxification process must extinguish, demobilize or destruct toxins. Decontamination method should non bring forth any toxic in the concluding merchandises. These methods must take any fungous spores that could increase and bring forth new toxins. In physical detoxification, heat interventions, gumma radiation, UV or seeable visible radiation are applied. Chemical debasement is more practical and reasonable method. Sodium bisulphate Converts AFM1 to H2O soluble merchandise ( Doyle and Marth, . 1978, Hagler et al. , 1982 ) . Treatment with ammonium hydroxide, Ca hydrated oxide, methanal and clays are the chemical methods to cut down the hazard of aflatoxicosis. Some strains of lactic acid bacteriums ( LAB ) and barms have been reported to degrade of aflatoxins level in dairy merchandise ( El- Nezami et Al. , 1998 a ) . Work Plan In this research, the biological method will be applied to adhere the ability of AFM1 in milk and yoghurt. Two types of Lactic Acid Bacteria ( LAC ) , Lactobacillus delbrueckii subsp. Bulgaricus and Streptococcus thermophilus, will be used for this intent. Lactobacillus delbrueckii subsp. Bulgaricus is used for yoghurt production and found in other fermented merchandises. This strain is regarded as acidophilous bacteria PH ( 4.6- 5.4 ) and unable to ferment any sugar except Lactose. During fermenting to yogurt, it produces ethanal that is one of the yoghurt olfactory property elements. Streptococcus thermophilus converts lactose to lactic acid and ethanal. It is counted as a probiotic. In add-on, this strain alleviates the symptoms of lactose intolerance. In this method, samples of assorted types of milk and yoghurt will be collected from different stores. Whole milk, semi-skimmed milk, skimmed milk, low fat yogurt and high fat yogurt are traveling to be used in this research. The research processes include, civilization readying, taint with AFM1 in PBS, milk taint with AFM1, yogurt taint with AFM1, statistical analysis and consequences. At first, Lactobacillus delbrueckii subsp.Bulgaricus and Streptococcus thermophilus is cultivated and incubated so these bacteriums are centrifuged and washed with buffer. The following measure is suspending bacterial pellets in PBS, which is contaminated with AFM1. Then the bacterial pellets is incubated and centrifuged. Extracting the unbound AFM1 will be done by Immunoaffinity Columns ( IAC ) method and the process will be completed harmonizing to R-biopharm GmbH recommendation. This method will be repeated in milk and yogurt samples. Again, prepared bacterial pellets will be suspended in contaminated milk or yogurt with AFM1. Removing the unbound AFM1 will be done by IAC method after the incubation and extractor of milk and yoghurt samples. The statistical analysis will be based on the discrepancy comparing. Differences between discrepancies show the difference between adhering sums of AFM1 in two medium of two bacteriums. ANOVA and DUNCAN trial are suggested analyses methods in this research. The most of import thing in this undertaking is showing the adhering ability of LAB. Which type of these two strains has a more binding ability in comparing of another one? In add-on, another mark of this undertaking is to place the binding ability of milk and yogurt. Which merchandises adhering capableness is much greater than other? Alternatively, does the sum of fat have any consequence on AFM1 debasement? All the consequences will be discussed. The biological and chemical environment of each merchandise must be considered. To happen out the chief ground several factors must be intended. For illustration, medium PH, available enzymes in the merchandise, agitation, types of protein in each merchandise, sum of fat and type of bacteriums. To accomplish the best determination, utilizing the old researches related to this topic is advised. After accurate probes and sing all facets of this research, the concluding decision will be suggested. Different methods are available to pull out the unbound AFM1 from supernatant. Thin Layer Chromatography ( TLC ) , High Performance Liquid Chromatography ( HPLC ) , Enzyme Linked Immunosorbent Assay ( ELISA ) and Immunoaffinity Columns ( IAC ) . Immunoaffinity column is the most suited method for this research. This method purifies the substance from a mixture into a buffering solution, cut down the sum of substance in a mixture and purify and concentrate the enzyme solution. OBJECTIVES A ; GOALS The end of this undertaking is to diminish the degree of AFM1 in dairy merchandises with biological method to avoid the harmful consequence of this aflatoxin and suggest the new technique for this planetary job. The chief aims include: O Roll uping the samples O Fixing the LAB and AFM1 O Adding the LAB and AFM1 to supply samples O Detecting the unbound AFM1 with IAC method O Statistical analysis by ANOVA and DUNCAN trial O Geting the consequences To avoid prejudice in this undertaking some facets must be considered O Choosing the appropriate statistical trial O Sing the immaterial factors O Accuracy in sample collection O Applying sufficient volume and degree of used stuffs O Sing the truth of used equipments Timeline No Activities Date 1 Submit Grant Proposal December, 2009 2 Expected Grant Notification January, 2010 3 Provide Laboratory February, 2010 4 Obtain Materials and Equipments March, 2010 5 Project Start up April, 2010 6 Prepare Results Report June, 2010 7 Submit Project July, 2010 BENEFITS OF RESEARCH Aflatoxin M1 has been related with assorted diseases. It is diagnosed farm animal, domestic animate beings and homo in the worldwide. Certain environmental factors cause the happening of aflatoxins in animate beings. Such as geographical location, agricultural and agronomic process, bring forthing of Fungis that cause mycotoxins presence during preharvest, storage and processing. Aflatoxin M1 cause liver and kidney disfunction and malignant neoplastic disease in animate being and human. These are well depends on age, sex, species and nutrition. Clinical symptoms in carnal include ammonium hydroxide, reduced reproductivity, disfunction in nutrient use and GI jobs Evidence of aflatoxins wellness impact on homo has been reported from different country of universe particularly in 3rd universe states and the acute status of disease leads to human decease. Overall, because of all the issues that mentioned above aflatoxins have the irreparable impact on the universe economic system. Ineluctable presence of aflatoxins in nutrients and provenders and do the harmful consequence on homo and animate beings leads to detect and research the new methods for detoxification and degrading of these mycotoxins. In this undertaking, it is attempted to measure the consequence of lactic acid bacteriums on diminishing the degree of AFM1 in milk and yoghurt. If the result can be acceptable, it will be used for the remotion of AFM1 from dairy merchandises. The other account to utilize LAB for decontamination of AFM1 is the side effects of some mechanical and chemical methods. These techniques are non appropriate to use in dairy merchandises and the biological method in these instances has been advised Budget MATHERIALS 1 SOLID AFM1 ( SIGMA ) ?200 2 Lactobacillus delbrueckii subsp. bulgaricus ?250 3 Streptococcus thermophilus ?250 4 Phosphate Buffer Saline ( PBS ) ?100 5 Milk A ; Yoghurt ?50 6 Incubator ?1000 7 Centrifuge ?2500 8 Pipets 1-10 milliliters ?200 9 UV Light box and beginning ?500 10 Other equipments ?300 11 TOTAL ?5350 IAC EQUIPMENTS AFLASCAN KIT COMPONENTS 1 Aflascan unsusceptibility columns ?150 2 Florisil tips ?200 3 Glass syring barrel ?100 4 Plastic syring pump unit ?150 5 Rubber connection ?100 6 Fluroscent comparator card ?300 7 Sum ?1000 PROJECT MANAGEMENT

Free Essays on THE ODYSSEY BY A WOMAN

Many times throughout â€Å"The Odyssey† women are given the characteristics of men and men the characteristics of women. Contrary to the fact that kings and rulers are males, the females obviously possess more power and control leading one to believe that â€Å"The Odyssey† was written by a woman. The author sets the tone by introducing Odysseus, the main character as a damsel in distress and Athena as the â€Å"knight in shining armor†. (I, 1-119) Odysseus is being held on the island of Ogygia by the nymph Kalypso after his ship and crew were destroyed leaving him shipwrecked on her island. Athena seems to feel empathetic for Odysseus and asks Zeus, king of the gods, to send Hermes to order Kalypso to allow Odysseus off the island of Ogygia (I, 53, 64). Athena was definitely the one who has to save the day, as a male author would most likely not think the same thing. Penelope establishes dominance over the suitors by keeping them at bay for almost four years. She told the suitors that it would be dishonorable not to have a shroud to bury Lord Laertes, Odysseus’s father in when he died and that she must finish it before she can choose a suitor to marry (II, 103-107). Everyday she would work on a loom weaving the shroud and each night by torchlight she would unravel what she had woven (II, 110-111). Penelope was labeled cunning by the leading suitor, Antinoos, because of this deceit and trickery (II, 93). The female Penelope obviously possesses a lot of control here keeping over a hundred men at bay by deceiving them. In book V, where Telemakhos is returning home, Zeus has Athena act as a â€Å"body guard† for him (V, 28-30). The suitors were planning to kill Telemakhos when he returned home by ambushing him between the islands of Ithaca and Same (IV, 875-882). Athena escorted Telemakhos home to avoid the suitor’s ambush, therefore serving as his â€Å"bodyguard†. This definitely shows complete control of the situ... Free Essays on THE ODYSSEY BY A WOMAN Free Essays on THE ODYSSEY BY A WOMAN Many times throughout â€Å"The Odyssey† women are given the characteristics of men and men the characteristics of women. Contrary to the fact that kings and rulers are males, the females obviously possess more power and control leading one to believe that â€Å"The Odyssey† was written by a woman. The author sets the tone by introducing Odysseus, the main character as a damsel in distress and Athena as the â€Å"knight in shining armor†. (I, 1-119) Odysseus is being held on the island of Ogygia by the nymph Kalypso after his ship and crew were destroyed leaving him shipwrecked on her island. Athena seems to feel empathetic for Odysseus and asks Zeus, king of the gods, to send Hermes to order Kalypso to allow Odysseus off the island of Ogygia (I, 53, 64). Athena was definitely the one who has to save the day, as a male author would most likely not think the same thing. Penelope establishes dominance over the suitors by keeping them at bay for almost four years. She told the suitors that it would be dishonorable not to have a shroud to bury Lord Laertes, Odysseus’s father in when he died and that she must finish it before she can choose a suitor to marry (II, 103-107). Everyday she would work on a loom weaving the shroud and each night by torchlight she would unravel what she had woven (II, 110-111). Penelope was labeled cunning by the leading suitor, Antinoos, because of this deceit and trickery (II, 93). The female Penelope obviously possesses a lot of control here keeping over a hundred men at bay by deceiving them. In book V, where Telemakhos is returning home, Zeus has Athena act as a â€Å"body guard† for him (V, 28-30). The suitors were planning to kill Telemakhos when he returned home by ambushing him between the islands of Ithaca and Same (IV, 875-882). Athena escorted Telemakhos home to avoid the suitor’s ambush, therefore serving as his â€Å"bodyguard†. This definitely shows complete control of the situ...

Enterprise Resource Planning (operations management)1 Assignment

Enterprise Resource Planning (operations management)1 - Assignment Example ment is the success formula to get going through the development phases, they provide incremental improvement over time since they slot in the four steps of continuous development i.e., PDCA – Plan, Do, Check and Act (ASQ). Continuous improvement sweeps in a lot of finances and is a tiresome activity on part of the practioners since the assimilation of Total Quality Management, Sigma and Lean emphasize teamwork and computing systematizing processes. Since this process is so expensive to setup and involves an uphill movement, organizations hold the right to save their efforts and codify their labors using high tech Information Technology tools. To maximize the advantages of ERP and overcome the threats of innovation, the ERP systems should be enriched with customization tools. Following are some of the methodologies that can be integrated to overcome the limitations of ERP towards

Assigment Essay Example | Topics and Well Written Essays - 500 words

Assigment - Essay Example In addition, some companies have reviewed their policies in order to embrace changes that have occurred in relation to changes of gender roles. The attitude and behavior of how men and females are expected to act within the society has been changing tremendously, and some have a positive effect towards development of the society while others generate negative effects to the society (Lindsey 120). Traditionally, females were expected to earn less than males in society, but it is no longer an issue in the society today. Gender roles are learnt through the socialization process. The way a child is brought by the parent determines what roles the child will learn from the parents. Usually, children learn through examples from the parents and view their parents as their role models. Through this process, the children acquire gender roles. In addition, other institutions such as schools help in learning of the gender roles. Majority of males are not able to deal with the changes that occur in the society. Several changes have occurred regarding biological, education, parenting and genetic factors. As gender roles change, they have created new opportunities for females. Males face a huge dilemma trying to adjust to the changing gender roles. Take, for example, some males are not capable of adjusting when they find out that their wives earn more money than they earn. Men should be capable of embracing change whenever there is an adjustment of conventional gender roles (Lindsey 119). Because of the changing conventional gender roles, females have encountered many opportunities that open up from this change. These opportunities usually come with a price making some things take a slower change. Women no longer face discrimination in the workplace, which they used to face before because of adoption of new gender roles. However, though gender roles are changing, there are some things, which a female is always associated with, and there are those things,

Reaction Paper about Communicating Through Nonverbal Behaviors Essay - 1

Reaction Paper about Communicating Through Nonverbal Behaviors - Essay Example ean my cupboard and I had replied with an â€Å"Okay Mum† but I received a thrashing in return and when I inquired as to the reason behind it, my mother said that I shrugged my shoulders and rolled my eyes which exuberated a lot of negativity. That day onwards I became watchful of my body language. A common misconception is that a person’s body language is the only form of non-verbal communication. That is not quite the case, other categories of non-verbal communication include: paralanguage, spatial usage and self-presentation. These encompass the pitch and tone of a person’s voice, the posture and use of space as also the attention a person pays to his/her appearance, even to the point of minute details such as the perfume a person is wearing. The multitude of cues which fall under non-verbal communication have the ability of perplexing people with how to react under different situations. A lot of conscious effort is required if a person wants to communicate a single message through his verbal as well as nonverbal cues. Sometimes, for example in front of elders decency would not permit a person to disagree blatantly with what the elders are saying, so through our verbal message we tend to agree with them, however our non-verbal communication reveals our true in tentions. Therefore, it is important to exercise ample control over our nonverbal communication, since with the progress of time awareness regarding nonverbal communication and its significance is

Factors Affecting Human Intelligence Psychology Essay

Factors Affecting Human Intelligence Psychology Essay The objective of this context is to discuss human intelligence. To achieve the following sub titles constituted as guidelines for the discussion; anatomy of human of intelligence, theories of human intelligence and factors affecting human intelligence Anatomy of Human Intelligence Human nature has intelligence that governs the human mental ability and to as cognitive ability. Despite being a widely studied and debated topic there is still lack of a universal definition for intelligence because of its compound and many-faceted nature i.e it engages multiple areas of the brain, instead of just having one intelligence center. Intelligence facilitates the gaining of knowledge and consequent wide applications in solving problems. The roots of intelligence are biological and it is believed to have evolved over time and is connected to structure of the brain and its development in that the intelligence quotients are related to the brain volume (Frohlich, 2004). According to Sternberg (1981), psychologists and laymen agree that intelligent people are characterized by their capacity for solving problems, their expertise with language and their open-minded nature to innovation. According to Flinn et al (2004), the evolution of human intelligence has been so rapid compared to other species such that the human brain increased by about 250% in less than 3 million years. This is evidenced by remarkable behavioral changes of the past few generations. They further argue that the high evolution rates leading to greatest complexity in human are due to the demand of their environment citing ecological demands, such as hunting or climatic variability and selective pressures favoring other species compared to them. Research on human intelligence has become intense in trying to answer the several questions raised on basic structure and mechanisms of intelligence following the discoveries made in relation to genetics of intelligence and its functioning in the most recent stages of human development. In trying to classify intelligence, the following three classes were arrived at; social intelligence, natural or potential intelligence and academic intelligence. The social intelligence is a practical mode of intelligence used in making day to day life decisions in all fields. Natural or potential intelligence helps in acquisition of knowledge and cognitive abilities essential for easy interaction with the surrounding environment. The third form of intelligence is more of as measure of the cumulative levels of the former two types of intelligence describing the complexity of intelligence and is characterized by the IQ tests. Modern psychology classifies intelligence in two categories namely fluid int elligence and crystallized intelligence. Fluid intelligence is mainly the use of self acquired knowledge through life experiences to solve challenges and crystallized intelligence is more like academic knowledge as it largely depends on long-term memory. However all these different forms of intelligence are dependent and do not operate in isolation (Colom Pueyo 2000). Theories of Human Intelligence In an endeavor to understand human intelligence, there are various theories advanced to explain it. They can be divided into the unilateral construct based on unitary entity of general intelligence and those based on multiple dissimilar activities. Some of the theories discussed below include Psychometric approach theories, Piagets stages of cognitive development, Sternbergs Triarchic theory of intelligence and Gardners multiple intelligences theory. Psychometric approach to understanding intelligence is the most used and is based on psychometric tests. Some of the theories advanced based on this include; Charles Spearman in 1904 came up with Two-factor Theory of intelligence as a way of measuring general intelligence using Tetrad Differences. His basic inputs were common sense (native capacity) and sensory discriminations. It stated that every test can be divided into a g factor and an s factor. Where the g-factor measures the general factor or common function among ability tests and the s-factor measures the specific factor unique to a particular ability test. This however had its limitations because the g factor showed that any cognitive ability regardless of how different they were had a positive correlation (Spearman, 1904). Following the shortcomings of Spearman, L.L. Thurstone came up with the Centroid method for modern factor analysis. Modern factor analysis took in seven orthogonal factors referred to as Primary Mental Abilities; verbal comprehension, word fluency, numerical capability, spatial visualization, associative memory, speed of understanding and reasoning to yield multi factors, unlike Spearmans single factor yield (Thurstone, 1934). Raymond B. Cattel spotted a weakness in the former theories as a result of the use of single generation in trying to measure intelligence. He developed The Gf-Gc Theory measuring intelligence using fluid intelligence (Gf) and crystallized intelligence (Gc) to account for differences between children/adolescents and adults. The Gf represented the ability to discriminate and perceive relations while Gc represented the ability to differentiate earlier established relations using Gf. He supposed that crystallized intelligence increases gradually to old age where it slowly declines whereas fluid intelligence reaches a peak in adolescents and remains almost constant through adulthood (Carroll,1993). J. P. Guilford ventured more into the adulthood intelligence developing a Structure-of-Intellect model (SI model). The model had a 3-D cube shaped model with five categories of how the information is presented on a test, six operation categories of what is done on a test and six product categories of the form in which information is processed on a test. Upon conducting a test and filling all the categories, the point of intersection provides foundation for generating hypothesis of intelligence (Carroll, 1993). Using re-analysis of several data sets John B. Carrol proposed the Three Stratum Theory. This consists of three different levels of intelligence. The first layer represents narrow abilities that are highly specialized, the second level represents moderate abilities but in several areas and Spearmans concept was a sufficient representation for the third level (Carroll, J. B. 1993). The latest work using psychometric approach is the Cattel-Horn-Carrol (CHC) Theory. This is an amalgamation of The Gf-Gc theory, Horn theory and The Three-Stratum Theory. According to Horward Gardner (1999) psychometric tests had ignored other forms of intelligence of equal importance; that our minds handle different tasks using several cognitive mechanisms and not through a single centralized system. He therefore developed Theory of Multiple Intelligences basing his studies on both the normal and abnormal personnel coming up with eight different components of intelligence with the eighth one just added in 1999. Robert Sternberg came up with Triarchic Theory of intelligence based on three aspects of intelligence. These were creative intelligence (experiential), analytic (componential) intelligence and practical (contextual) intelligence; where analytical intelligence deals with academic brilliance, creative intelligence deals with insights, fusion and reaction to events while practical intelligence deals with acquiring knowledge, understanding and dealing with life challenges. He was of the opinion that general intelligence is only but part of analytic intelligence and therefore cannot give a full insight of intelligence. Following its use in evaluation of individual success in the modern times this has later been named as Theory of Successful Intelligence by Sternberg (Sternberg, 1984, p.271). Jean Piaget advanced one of the used theories in the development of school curriculums. He used the development approach in the study of intelligence. His view was that growing up is a process that has stages and every stage bracket has its maximum capabilities. The group stages of development he came up with are Sensimotor stage (0-2 years), preoperational stage (2-7 years), Concrete stage (7-11 years)Â  and formal operational stage (11 years and above). At Sensimotor stage (0-2) intelligence is based on perception and how other objects work, the thoughts occur mentally and cannot be expressed. In the preoperational stage (2-7 years) one learns to speak, image representation of objects with the thoughts being external. Concrete stage (7-11 years)Â  involves logic reasoning and thinking. The formal operational stage (11 years and up) is the final stage of development of human intelligence. His theory suggests that growth of intelligence is continuous process of assimilation and acc ommodation of new ideas and which lead to expansion of field of applications. Factors affecting Human Intelligence Human intelligence is affected by biological factors, environmental factors and ethical factors. Biologically genes pass cognitive abilities from parents to the children through the DNA. This is evidenced by a number of factors that include the correlation of IQs between an individual and the parent, hereditary brain diseases, similar IQs in identical twins, similarity in brain language areas among family members and cognitive skill such as verbal and spatial abilities, reaction times, and even some personality qualities, including emotional reactions to stress. Intelligence is connected to structure of the brain and its development in that the intelligence quotients are related to the brain volume. Since intelligence is affected by the brains some factors like ratio of brain weight to body weight, the ratio in for instance of brain weight to body weight in a fish is 1:5000 whereas in humans it is 1:50. Occasionally brains metabolic activity may lower intelligence for big brains. The size of the frontal lobe critically affects fluid intelligence tests Other factors affecting intelligence related to the brain include location of the grey matter tissue and its volume and the overall thickness of the cortex (Colom Pueyo, 2000). Environmental effects are affect intelligence of human population both at individual and group levels. Some environmental factors are either enhanced or suppressed by the genes of the individual. The social set up has impacts on the level of intelligence attained by an individual as it dictates things like what he does, what he values and how he lives. This is attested by the different level of intelligence of different communities living in different locations say urban-rural places. Their different tend to improve one aspect of intelligence compared to the other set up. Occupation of individuals also tends to affect their intelligence depending with the scope pr demand of their job jurisdiction. Education is also a major factor influencing level of intelligence; this will depend on the level of education where highly educated individual is likely to have a high level of intelligence compared to one with low levels of education in general skills and problem-solving and abstract thin king. Another environmental factor affecting intelligence is nutrition, it has been largely converged that prolonged malnutrition during childhood has long-term effects on level of intelligence. Intelligence is also affected by the manipulation of existing normal conditions; eugenics is currently being practiced to improve the human species by improving human genes. This is mainly to correct congenital disorders and cognitive skills. There are also studies being conducted to try coming up with artificial intelligence through increasing IQs and also using machines. There major cognitive skills of interest are reasoning, knowledge, perception and reaction (Flinn, 2005) Ethical issues also affect human intelligence. In this work the ethical issues discussed are privacy, accuracy and accessibility. Human intelligence is likely to be compromised by wrong information availed to it leading to wrong conclusions or decisions. Lack of information or refrained access to vital information required later translates to lack of knowledge which limits the level of operation of the human intelligence. Human intelligence is surely a not so well understood phenomenon that still requires more research to give a clear insight and understanding of its complex nature. Simulation and improvement of the advanced theories will be key to any further development in these field

Hegel and the Relation of Master and Servant Essay -- essays research

Relation of Master and Servant According to Hegel, â€Å"the self conscious is itself and for itself† meaning that it has to come outside of itself, so that it can do two things. One is to cancel out the other otherness. The second is to try to become recognized. This recognition process is called Master and Servant self-conscious. The conflict between master and servant is one in which the historical themes such as dependence and independence are introduced. It sets up the realization of the self conscious through the recognition of and by another, through mutual recognition. The relation between the self and the otherness is necessary to define human awareness and more importantly desire. This desire is part of the primordial human experience. The problem is that, the consciousness respond...