Business and Trade Relationships between the United States and China Term Paper

Business and Trade Relationships between the United States and China - Term Paper Example As the business relationship between these two nations have gone through a many high points as well as low points, it has been an interesting topic of study for many researchers throughout the world. Furthermore, it is important to understand the different details of the trade relationship in order to get a better idea on how the relationship would continue in the future. This article focuses on exploring the business relationship between the United States and China. Traversing through historical trends, current state of business and future trends, this study would try to identify any potential opportunities for the future and how they can be utilized. In addition, it will also look at the possible challenges and ways to overcome those challenges. A Historical Perspective Early 18th century to World War II Before exploring the current and the potential of future relationships, it is necessary to take a look at way in which trade relations shaped historically. The first trade interact ion between two countries began around the late 1700s through the sea route. After the American Revolution, there was an attempt at sea exploration and American trader ship known as the ‘Empress of China’ arrived in the port of Canton (Dudden, 1992). This arrival of this ship in China was a very remarkable event because of the needs of both these countries. China had a huge demand for raw materials and Americans were on the hunt for anything exotic and oriental (Ng, 1983). This paved the way for a trade relationship between the two nations, which began to be popularly known as the Old China trade. The Americans were very interested in products like tea, cotton and silk, where as the Chinese were interested... Business relationships between the United States and China is a topic of discussion in this term paper. The researcher chose it because of the complex economic relationships between two countries and the way. The United States and China economic relationship has been one that has seen tremendous high points and equally strong low points. During the 1970s, the trade interactions between the United States and China were very less. However, the establishment of good bilateral relationship between both these countries resulted in the expansion of economic ties and hence, there was a considerable surge in the way in which trade and business grew. In due course of time, that is analyzed in the paper China become one of the top five trading partners of the United States and has become the largest market for the exported goods from China. The U.S companies have also been investing in China at a steady pace, especially during the past decade in avenues such as information technology. It is ve ry interesting to note how the trade and business relationship between two nations is heavily dependent on the way in which the political relationship between these nations is at a particular point of time. In conclusion, the researcher stets that while it is clear that trade between these countries have proven to be mutually beneficial, it would require a tremendous effort from the political and economic leadership of both nations to ensure that a strong momentum is maintained in times to come.

The psycology of Love Research Paper Example | Topics and Well Written Essays - 2250 words

The psycology of Love - Research Paper Example Nonetheless, even this basic concept takes in an extensive spectrum ranging from passion, intimate romantic love to the platonic love or the close, emotional non-sexual familial love that one may feel for a friend . Something about love that has been a subject of recurrent debate is its nature, although by determining what love is not, one can clarify various aspects. Frequently, love is contrasted with hate, the latter being the most extreme. All the same, when focusing on the contrast between an emotionally intimate and a sexual form of romantic attachment, the difference in consideration is between love and lust. Various Western authorities classify love into two main categories namely the narcissistic and the altruistic. In his work, exploring the definitions of love and evil through applied psychology, , who , defines love as a combination of simple narcissism and ‘the will to extend one's self with the aim of nurturing another's or one's own spiritual growth’ repre sents this view. He adds that by combining these, love is perceived to be an activity rather than a feeling. Different theories of love, according to researchers and psychologists exist. These theories explain love, emotional attachment and liking. Triangular Theory of Love Robert J. Sternberg developed the Triangular Theory of Love. Robert J. Sternberg developed the Triangular Theory of Love. He was a Tufts University’s psychologist and according to his theory, passion, commitment and intimacy are the three elements that encompass any instance of an interpersonal association. Passion refers to conditions of physiological and emotional arousal. It includes physical attraction and sexual arousal in addition to other types of strong emotional experiences. Passion is the most common love form and is evident in both infatuation as well as romantic love. Infatuation results when passion alone rules – it is an almost wanton physical desire. Commitment on the other hand invol ves a resolution to commit to love the other and endeavoring to uphold that love over time. It is based on the prospect that the relationship is permanent. Intimacy is defined as two people sharing their personal lives’ details and confidences, generally illustrated within romantic love affairs and friendships it involves emotional support closeness and caring. In all love forms, changing levels of all three of these components are supposedly evident (Reddy, 2011 and Cohen, 2011). Different types of love result from different combinations of passion, commitment and intimacy. For instance, a combination of intimacy and passion brings about passionate love whereas a combination of commitment and intimacy brings about compassionate love (Cherry, 2005). Cherry (2005) adds that according to Sternberg, in contrast to relationships based upon only one component, relationships built on two or more elements are more lasting. To describe a blend of commitment, passion, and intimacy, St ernberg (1986) uses the phrase consummate love. He suggests that this type of love is the most enduring and the strongest. However, it is not common. According to Sternberg (1986), ‘consummate love’ is an equal relationship with all the three elements. Generally, people strive after this ideal. All the other six love forms bring out one or two of the points predominating on the triangle. These can be categorized into complex or simple permutations –

Special Education and Needs Essay Example | Topics and Well Written Essays - 2500 words

Special Education and Needs - Essay Example (Florian 2006).These children need special attention and care and that is why special education is needed. The quality of educating special children should improve. Inclusive education is not made compulsory in all the countries. Inclusive education is modifying the existing system to suit the needs of these special children. The government should take measures to provide proper education and other facilities to the special children. Though there is an increase in the number of schools, the people selecting these schools are still less. Most of the disabled children are not enrolled in any of the schools and they feel they are different from others. Educational institutions all over the world are trying hard to provide the necessary facilities for the disabled children. Government should provide the resources required to manage the special children. Inclusion helps in providing the essential opportunities to all students. It helps in increasing the involvement of students in all types of activities. The existing government and their policies on special education and inclusion are better than how it was before. But this is not sufficient, as disabled people find it difficult to mingle with the normal people. Although there are several institutions that help these children and include them, this has to be increased. In countries like U.K and America, where the number of service organizations are limited, it becomes difficult for the parents to manage such children. More service organizations should be established and they should take the initiative to help these children. Government must organize all this and make sure the special education is provided to everybody without any discrimination. Inclusion is done to enable all students including the disabled to participate in all activities. They should not be separated from others; doing so will spoil the child's mind. America When compared to other countries, America has the major number of schools that educate students with disabilities. The number of students in the special education is rapidly increasing, which in turn leads to the increase in the special education schools. Generally it is difficult to make out the student who has disability from the normal students, as not all of the disabled people will be severe. American education system is being inclusive as it includes people with all sorts of disability. (Mitchell 2005).Disabled students will not be able to perform well when compared to the other students. Hence special care should be taken to make them excel in the academics. Most of the special children pursue their high school, where as there is a decline in the disabled students completing the high school. Once they complete their education, most of them try and engage in any employment and some continue their higher education. This information was revealed by a recent survey conducted in Am erica. America is definitely growing at a fast pace in improving the special education institutions. As seen in the survey report, America is better than the other countries in terms of the inclusion and education for all. There are so many schools that concentrate on educating these special and disabled children. To enhance the existing education system, the schools should be made aware of the disabilities and special children. The teachers and the faculties must have knowledge about the problems and how to help them in continuing their education. New strategies can be adapted

Report about the museum printing Essay Example | Topics and Well Written Essays - 500 words

Report about the museum printing - Essay Example This painting exhibits exception for its realism and sensitive handling of the subjects. The painting is remarkable because it conveys the message of the low class occupied by the rural Africans. The workers are represented by as graceful and majestic figures (Los Angeles County Museum of Art, 89). The message of feeling sympathy and respect for the peasants is vividly exhibited in this painting. The art is a sculpture designed and constructed by the Tamil sculptors of the Chola dynasty. The sculptor measures 76.20 by 57.15 by 17.78 cm. The designers completed the sculpture to reflect the Siva as the lord of yoga. The sculpture represents the Indian civilization. The physical appearance resonates with the message of the sculptors that Siva is Supreme Being that represents the source of the cosmic dance. In addition, the sculpture’s representation of the source of dance is evident on the upper right hand of Siva, which holds a drum (Los Angeles County Museum of Art, 97). The drum represents a primeval sound at the creation of the earth. The artwork is a painting, which is among the first paintings to be acquired by the Los Angeles County Museum of art. The painting measures 102.07 by 106.83 cm. This painting is best known and it has been often reproduced in the American painting industry. The painting was designed and constructed by George Bellows in 1913. The painting conveys a message of hard work of the homemakers among the low class urbanites (Los Angeles County Museum of Art, 114). The blend of various colours ranging from red to orange conveys all aspects of life and integration in early city life. In conclusion, the artworks discussed in this essay successfully convey the intended message to the audience. The Cotton Pickers painting conveys the message of rural African American lifestyle, the Shiva as the Lord of Dance conveys the message of supremacy and source of dance

Bleak House Commentary Essay Example for Free

Bleak House Commentary Essay The following is an analysis of a passage from Charles Dickens novel, Bleak House, in which a bleak and dreary atmosphere is conveyed. The first thing that is mentioned by the narrator in the first paragraph of the passage is mud, and this plays a significant part in the depiction of a filthy, dirty environment. The beginning line, As much mud in the streetsand it would not be wonderful to meet a Megalosaurus, forty feet long or so, waddling like an elephantine lizard up Holborn Hill uses hyperbole to suggest that the streets are so muddy that its almost like the beginning of the world, and it wouldnt be strange to see a dinosaur roaming around because of that. Also, the line Dogs, undistinguishable in mire. Horses, scarcely better; splashed to their very blinkers is an exaggeration of how the streets are so dirty that one cannot tell the different between the mud and the dogs, and even horses are up to their eyes in it. This shows us just how much mud and grime there is, and how dirty everything is. Another aspect in this passage is the dreariness and the bleak environment. This is expressed in the line Foot-passengers, jostling one anothers umbrellas, in a general infection of ill temper, and losing their foot-hold at street-corners, where tens of thousands of other foot passengers have been slipping and sliding since the day broke (if this day ever broke), adding new deposits to the crust upon crust of mud Firstly, the line jostling one anothers umbrellas suggests that the place is so overcrowded and uncomfortable that people are all bumping into each other, and that their ill temper is spread like a disease every time they come into contact, and it stirs in us a sense of claustrophobia because the people are all packed together. This adds to the implication that its a miserable and unpleasant place to be. Also, the fact that the foot-passengers are using umbrellas suggests that it is or has been raining, strengthening the general feeling of gloominess. Furthermore, the fact that the part of the line slipping and sliding since the day broke (if this day ever broke) is written in parenthesis suggests the sarcastic voice of the narrator, that he is mocking the foot-passengers ill temper and derisively commenting on the cold and depressing atmosphere, and this in turn reinforces that very fact. The use of sibilance in slipping and sliding further increases the effect of the dismal environment. The following line, Smoke lowering down from chimney-pots, making a soft black drizzle with flakes of soot in it as big as full-grown snowflakes gone into mourning, one might imagine, for the death of the sun is very effective in expressing how unpleasant the place is. The fact that the smoke is lowering down, instead of drifting upwards as it normally does, implies that the atmosphere is so oppressive that even smoke cant escape and is being pushed down. In addition, there is a personification of the soot and snow, as they have gone into mourning for the death of the sun. This could be an implication that the place is so gloomy and polluted that you can no longer see the sun, and that is why it has died, and is also why everything is black. This effectively intensifies the feeling of despair and dreariness that is hanging over the city, and the bleakness of the environment. The second paragraph of this passage concentrates mainly on fog and how it has been personified into a shadowy demon from which there is no escape. The first line of the second paragraph begins with Fog everywhere, and this alone is a very abrupt, aggressive statement that makes us feel, once again, slightly claustrophobic, as though there is fog pressing in all around us and that there is no escape from it. Subsequently, the lines Fog in the eyes and throats of ancient Greenwich pensioners, wheezing by the firesides, and Fog cruelly pinching the toes and fingers of his shivering little prentice boy on deck are examples of how the fog is personified, and made to seem sinister, omnipresent, like an oppressor that takes pleasure in attacking weak, vulnerable people like ancient Greenwich pensioners and the shivering little prentice boy. Another very effectual line is Chance people on the bridges peeping over the parapets into a nether sky of fog, with fog all round them, as if they were up in a balloon, and hanging in the misty clouds. The use of the verb peeping is very interesting because it means the people are looking quickly or secretly over the bridges, and it creates a sense of nervousness and apprehension, as though the people are frightened of the fog, thus making the fog seem all the more threatening. In addition to this, the use of parapets may not be just a reference to the sides of the bridge, as it also makes us think of castles, and so people peeping over parapets makes it seem as though they are under siege or under attack from an army of fog, which goes back to the allusion that the fog attacks weak or vulnerable people. Furthermore, the last part of the line, as if they were up in a balloon, and hanging in the misty clouds conveys a sense of helplessness, because when youre in a balloon you have very limited control, and this has been used as a metaphor to suggest how the people have no control over the fog and that they are trapped by it. Once again, this creates the feeling of claustrophobia and makes it seem overwhelming as there is so much fog and theres no way out. The structure of these this passage is very interesting to note. The first paragraph is almost conversational, as though the narrator is describing to us the many events of the day, while the second paragraph suddenly switches to more somber, grave narrative of the fog, and this affects us and makes us feel uneasy of the fog. This is also partly because the passage is written in the present, and so it involves us, makes us feel as if we are there in the dreary environment. Additionally, the elongated syntax of the sentences mirrors the long, miserable day and the never-ending fog, and this intensifies the gloomy feeling we get from it. In conclusion, this passage from Bleak House uses many different techniques such as personification, hyperbole and tone of voice to effectively express the dirty and gloomy environment and the general feeling of misery and despair.

Growth Factors in Periodontal Regeneration

Growth Factors in Periodontal Regeneration GROWTH FACTORS IN PERIODONTAL REGENERATION ABSTRACT : Periodontitis and all periodontal diseases are bacterial infections that destroy the attachment fibers and supporting bone. Left untreated, these diseases can lead to tooth loss. The main cause of periodontal disease is a bacterial plaque, many options are available to treat this disease including non-surgical,surgical,and recent regenerative materials. GFs are natural biological mediators that regulate key cellular events that are part of the process of tissue repair and regeneration. Recent advances in the areas of cellular and molecular biology allowed better understanding of the functions of GFs and their participation in the different phases of wound healing. In vitro and in vivo studies have confirmed that GFs can enhance the capacity of tissues to regenerate by regulating cell chemo attraction, differentiation and proliferation. This review focuses on five growth factor families that have potential for inducing periodontal regeneration based on their ability to stimulate osteo blast and periodontal ligament cells in vivo and vitro. Key words: platelet-derived growth factor, insulin-like growth factor, transforming growth factor-beta, fibroblast growth factor, and bone morphogenetic protein. INTRODUCTION : Periodontitis is a widely prevalent inflammatory disease of the tissues supporting the teeth, characterized by a progressive loss of bone and attachment. The ultimate goal of periodontal therapy is the regeneration of periodontal tissues, which consists in stimulating new cementum formation, new alveolar bone apposition, and a functionally-oriented periodontal ligament reconstruction. Conventional treatment procedures may be ineffective in achieving bone regeneration, leaving both the clinician and the patient dissatisfied with the outcome. Growth factors (GFs) have long been believed to have the potential to accelerate the healing process and, therefore, enhance tissue regeneration in challenging clinical scenarios.1 MODE OF ACTION OF GROWTH FACTORS: To evoke a biologic effect, a growth factor must be synthesized by an originating cell, travel to its target receptor, interact with target receptor, or binding protein, and activate second messengers or terminal effectors.2,3 Local mode of action is more associated with the term growth factor and involves Paracrine, Autocrine, Juxtacrine, and Intracrine modes. Autocrine mode of action – Growth factors synthesized by one cell, secreted in a soluble form outside the cell and then bind to surface receptors on the same cell to evoke an effect is autocrine mode of action. Example includes: TGF ÃŽ ², which are produced and act on epithelial cells, and BMP’s, which are produced and act on osteoblastic cells. (fig 1) Intracrine mode of action–Growth factors produced by one cell and not secreted, but acts intracellularly to facilitate its effects is intracrine mode of action. (fig 2) Paracrine mode Growth factorsproduced by one cell, with receptors present on another cell in the local micro environment is the paracrine mode of action. Here the mediators are secreted in soluble form and binds to its receptors on the target cell to evoke its effect. (fig 3) Juxtacrine mode It is similar to paracrine effects except that the factor produced by the cell of origin is cell surface bound and requires cell contact by the target cell to evoke a response. (fig 4) RECEPTORS FOR GROWTH FACTORS:4,5 For a growth factor to exert an effect, its designated receptor must be present in sufficient quantity, orientation, and functional activity to transmit appropriate stimuli. Growth factor receptors can be divided into 2 broad categories: Cell surface receptors Intracellular receptors The most common prototype growth factor receptor is the cell surface receptor, which can be further divided into three main categories: G- protein linked Receptor tyrosine kinases Serine threonine receptor kinases POTENTIAL ROLES OF GROWTH FACTORS IN PERIODONTAL REGENERATION: To stimulate cell proliferation. E.g. Platelet derived growth factor (PDGF). To enhance function of cells and cell differentiation. E.g. Bone morphogenetic protein (BMP). To stimulate matrix synthesis. E.g. Transforming growth factor- ÃŽ ² (TGF- ÃŽ ²). To act as co-factors for gene expression. DISADVANTAGES OF GROWTH FACTORS: They were intended to be made by cells, stored than used locally. They have short half-lives i.e., when used as drug, doses must be greater than actual in vivo concentrations. They affect various cells in individual ways i.e., cells growing in high concentrations of growth factor had an increased susceptibility to cell death upon growth factor withdrawal. They need a delivery system for sustained or, controlled release (in low concentration) of a biologically active growth factor or, cocktail of growth factors. POLYPEPTIDE GROWTH FACTORS : Polypeptide growth factors are a diverse group of hormone-like agents that regulate growth and differentiation through cell surface receptors. They are generally represented by homologous families containing several members with distinct overlapping receptor interactions and hence, responsive tissue specificities. Similarly, their receptors are also clustered in family groups of sequence-related proteins. COMMON FEATURES OF POLYPEPTIDE GROWTH FACTORS :6 Natural cell products: Growth factors are natural cell products that are released or activated when cell division is needed.This action typically occurs during such events as wound healing or, tissue regeneration. Local actions: With few exceptions,growth factors are locally acting. Receptor activity: Because growth factors cannot diffuse across the cell membrane, growth factors must exert their activity by first binding to high-affinity cell membrane receptors.The capacity of a cell to respond to a given factor is therefore dependent on the presence of these receptors. Regulation: The production of polypeptide growth factors is tightly regulated in normal cells. In contrast, unregulated production of growth factor is thought to be an important component of proliferative disorders, such as fibrotic disease and cancers. Multifunctional activities: Polypeptide growth factors are multifunctional, meaning that they may stimulate a wide variety of cellular activities, which include growth, migration, differentiation and production of extracellular matrix proteins. Mechanism of action: In some cases, growth factors can stimulate the same cell that synthesizes the molecule (autocrine stimulation) or can affect nearby cells (paracrine stimulation). Regeneration: Tissue regeneration in vivo probably reflects the combined effect of several different growth factors. GROWTH FACTOR APPLICATIONS FOR ORAL AND PERIODONTAL TISSUE ENGINEERING : Therapeutic application of growth factors to restore damaged tissues aims at regeneration through biomimetic processes, or mimicking the processes that occur during embryonic and post-natal development.7 The complexity of these events suggests that creating an optimal regenerative environment requires the combination of different growth factors as found in natural reparative processes. The use of a single recombinant growth factor may also induce several molecular, biochemical and morphological cascades that will result in tissue regeneration.8 The most studied growth factors for periodontal regeneration have been PDGF, IGF, FGF-2, TGF-ÃŽ ² and different BMPs. SI. NO GROWTH FACTOR ALTERNATIVE NAMES SOURCE 1 Platelet-derived growth factor Fibroblast-derived growth factor. Glioma-derived growth factor Degranulating platelets Endothelial cells Smooth muscles Macrophages- Fibroblasts 2 Insulin-like growth factor Erythropoetic factor Growth-promoting activity for vascular endothelial cells Macrophages- Osteoblasts- Plasma stored in bone 3 Transforming growth factor-ÃŽ ² Epithelial cell specific growth inhibitor Tumour-inducing factor-1 Platelet ÃŽ ± granules 4 Fibroblast growth factor family Heparin binding growth factor Macrophage and osteoblasts stored in bone. PLATELET DERIEVED GROWTH FACTOR: The PDGFs are a family of dimeric disulfide – bound growth factors that exert their biologic effects by activating 2 structurally related tyrosine kinase receptors, the PDGF- ÃŽ ± and PDGF – ÃŽ ² receptors. PDGF was the first growth factor to be evaluated in preclinical periodontal and peri-implant regenerative studies. Proliferation, migration and matrix synthesis were observed on cultures of periodontal cells stimulated by PDGF, including gingival and PDL fibroblasts, cementoblasts, preosteo-blasts and osteoblastic cells [9-14]. These effects were shown to be time- and dose dependent 14. The PDGF family is composed of four growth factors: PDGF- A, -B, and the most recently discovered PDGF-C and -D 15. All of these participate in the wound-healing process, but, until now, only the three isoforms PDGF-AA, BB and AB were evaluated in periodontal therapy. PDGF-BB is the most effective on PDL cell mitogenesis and matrix biosynthesis 16,17. INSULIN LIKE GROWTH FACTOR: These are a family of single chain serum proteins that share 49% homology in sequence with pro- insulin. IGF-1 and IGF- 2 are two polypeptides from this group. IGF-1 acts as progression factor, also stimulates bone formation and have an effect on periodontal ligament cells. IGF-I is also important for bone remodeling and maintenance of skeletal mass and plays significant role in age-related osteoporosis. IGF-1 is capable of preventing apoptosis in fibroblasts by activation of multiple signal transduction pathways. IGF-1 has also been shown to regulate DNA and protein synthesis in periodontal ligament fibroblasts in vitro and to enhance soft tissue wound healing in vivo. Furthermore, studies have suggested variable responses of periodontal tissues to IGF-1 depending upon anatomical sites and a differential involvement of IGF-1 in periodontal wound healing and regeneration.18 FIBROBLAST GROWTH FACTOR: The angiogenic and fibroblast stimulatory properties of FGF-2 during wound healing and its chemotactic and proliferative effects on PDL cells suggest its use for periodontal regenerative therapeutic approaches19,20. In preclinical studies, this growth factor was evaluated for the treatment of different types of periodontal bone defects, in dogs and non-human primates. Despite different concentrations of FGF-2 and different delivery systems used in the studies, all showed an improvement in the periodontal tissue regeneration, compared with control groups. Studies that evaluated more than one concentration of FGF-2 suggested that its effects are dose dependent.21,22 TRANSFORMING GROWTH FACTOR ÃŽ ²: It is a member of a large family of biologically active protein hormones that are structurally related but differ markedly in their function. TGF ÃŽ ² consists of 2 subunits held together by covalent bonds. Five different genes are identified that encodes TGF- ÃŽ ² polypeptide TGF-ÃŽ ² has 5 closely related isoforms in vertebrates, out of which 3 are found in mammals (TGF-ÃŽ ²1, TGF-ÃŽ ²2, TGF-ÃŽ ²3). The three major activities of TGF-ßinclude inhibition of cell proliferation, enhancement of extracellular matrix deposition and the exhibition of complex immune regulatory properties. It is a major regulator of cell replication and differentiation. It can stimulate or inhibit cell growth. It can also modulate other growth factors like PDGF, EGF and FGF. It inhibits epithelial cell proliferation and stimulates mesenchymal cells. TGF-ÃŽ ²1, the most abundant isoform of the TGF-ÃŽ ² family and found primarily in the platelets and osseous tissue, has been used for this application.It has a role in recruiting and stimulating osteoprogenitor cells to proliferate and suggests to support periodontal wound healing and regeneration.23 BONE MORPHOGENETIC PROTEINS: The name Bone Morphogenetic Protein was given in 1965 by Urist .Bone morphogenetic proteins (BMPs) are a group of regulatory glycoproteins that are members of the transforming growth factor-beta superfamily.24They stimulate angiogenesis and migration, proliferation and differentiation of mesenchymal stem cells into cartilage and bone forming cells. More than 20 BMP-related proteins have been identified, several of which induce bone formation.25 In the field of periodontal regeneration, much of the research interest has focused on BMP-2, BMP-3 (osteogenin), and BMP-7. Recent studies have utilized recombinant human BMP to determine their potential for correcting intrabony, supra-alveolar, furcation, and fenestration defects. BMPs also show much promise in promoting dental implant wound healing.24 GROWTH FACTOR DELIVERY SYSTEMS: Several matrices and delivery systems have been used and evaluated for their efficacy and biocompatibility as carrier for growth factors. Two common types of polymeric materials used in growth factor delivery strategies are natural collagen-derived materials and synthetic polymers of lactic and glycolic acid (i.e., Poly [lactide-co-glycolide]). Extracellular matrix-derived macromolecules such as collagen have been used for many years in biomaterial application, and it is now possible to create artificial analogues of extracellular matrix proteins using recombinant DNA technology.1 Carriers can be of different types such as solids, gels or combinations.25A variety of new injectable materials such as hydrogels are also being developed for growth factor delivery applications and have been of special interest. These injectables are especially attractive because, in clinical application, they can allow for minimally invasive delivery of inductive molecules.1 CONCLUSION: Growth factors may regulate the repair and/or regenerative process which are impaired in presence of bacteria and their products in periodontal disease. Thus, the objective of growth factors administration in the treatment of periodontitis is to mimic the normal developmental process enhance normal wound healing response to promote complete regeneration of all attachment structures. Basic and clinical research is in progress to evaluate the role of growth factors in periodontal wound healing. BIBLIOGRAPHY: DARNELL KAIGLER, GUSTAVO AVILA, LESLIE WISNER-LYNCH, MARC L. NEVINS, MYRON NEVINS, GIULIO RASPERINI. Platelet-Derived Growth Factor Applications in Periodontal and Peri-Implant Bone Regeneration .Expert OpinBiolTher. 2011 March ; 11(3): 375–385 RIPAMONTI U, HERBST NN, RAMOSHEBI LN. Bone morphogenetic proteins in craniofacial and periodontal tissue engineering: experimental studies in the non-human primate Papioursinus. Cytokine Growth Factor Rev 2005;16(3):357–368. ANUSAKSATHIEN O, GIANNOBILE WV. Growth factor delivery to re-engineer periodontal tissues. Curr. Pharm. Biotechnol 2002;3(2):129–139. FRECHETTE JP, MARTINEAU I, GAGNON G.Platelet-rich plasmas: growth factor content and roles in wound healing. J Dent Res 2005; 84(5): 434-439. LAURIE K. MC CAULEY MARTHA J. Somerman. Biologic modifiers in periodontal regeneration. Dent Clin N Am , Advances in Periodontics, part I 1998; 43(2): 361-387. GARRY R. GROTENDORST. Connective tissue growth factor : A mediator of TGF- ÃŽ ² action on fibroblasts. Mini Review. Cytokine and growth factor reviews 1997, 8(3); 171 – 179. SCHILEPHAKE H. Bone growth factors in maxillofacial skeletal reconstruction. Int. J. Oral Maxillofac. Surg 2002;31(5):469–484. RIPAMONTI U, HERBST NN, RAMOSHEBI LN. Bone morphogenetic proteins in craniofacial and periodontal tissue engineering: experimental studies in the non-human primate Papioursinus. Cytokine Growth Factor Rev 2005;16(3):357–368. NISHIMURA F, TERRANOVA VP. Comparative study of the chemotactic responses of periodontal ligament cells and gingival fibroblasts to polypeptide growth factors. J. Dent. Res 1996;75(4):986–992. SAYGIN NE, TOKIYASU Y, GIANNOBILE WV, SOMERMAN MJ. Growth factors regulate expression of mineral associated genes in cementoblasts. J. Periodontol 2000;71(10):1591–1600. STRAYHORN CL, GARRETT JS, DUNN RL, BENEDICT JJ, SOMERMAN MJ. Growth factors regulate expression of osteoblast-associated genes. J. Periodontol 1999;70(11):1345–1354. CANALIS E. Effect of platelet-derived growth factor on DNA and protein synthesis in cultured rat calvaria. Metabolism 1981;30(10):970–975. BARTOLD PM, RABEN A. Growth factor modulation of fibroblasts in simulated wound healing. J.Periodontal Res 1996;31(3):205–216. OJIMA Y, MIZUNO M, KUBOKI Y, KOMORI T. In vitro effect of platelet-derived growth factor-BB on collagen synthesis and proliferation of human periodontal ligament cells. Oral Dis 2003;9(3): 144–151. REIGSTAD LJ, VARHAUG JE, LILLEHAUG JR. Structural and functional specificities of PDGFC and PDGF-D, the novel members of the platelet-derived growth factors family. FEBS J 2005;272 (22):5723–5741. BOYAN LA, BHARGAVA G, NISHIMURA F, et al. Mitogenic and chemotactic responses of human periodontal ligament cells to the different isoforms of platelet-derived growth factor. J. Dent. Res 1994;73(10):1593–1600. MATSUDA N, LIN WL, KUMAR NM, CHO MI, GENCO RJ. Mitogenic, chemotactic, and synthetic responses of rat periodontal ligament fibroblastic cells to polypeptide growth factors in vitro. J.Periodontol 1992;63(6):515–525. XIAOZHE HAN AND SALOMON AMAR. Role of Insulin-Like Growth Factor-1 Signaling in Dental Fibroblast Apoptosis. J Periodontol 2003;74:1176-1182. TAKAYAMA S, MURAKAMI S, MIKI Y, et al. Effects of basic fibroblast growth factor on human periodontal ligament cells. J. Periodontal Res 1997;32(8):667–675. TERRANOVA VP, ODZIEMIEC C, TWEDEN KS, SPADONE DP. Repopulation of dentin surfaces by periodontal ligament cells and endothelial cells. Effect of basic fibroblast growth factor. J. Periodontol 1989;60(6):293–301. ROSSA C JR. MARCANTONIO E Jr, CIRELLI JA, et al. Regeneration of class III furcation defects with basic fibroblast growth factor (b-FGF) associated with GTR. A descriptive and histometric study in dogs. J. Periodontol 2000;71(5):775–784. TAKAYAMA S, MURAKAMI S, SHIMABUKURO Y, KITAMURA M, OKADA H. Periodontal regeneration by FGF-2 (bFGF) in primate models. J. Dent. Res 2001;80(12):2075–2079. KI-TAE KOO,CRISTIANO SUSIN, ULF M.E. WIKESJOÂ ¨, SEONG-HO CHOI, AND CHONG-KWAN KIMI. Transforming Growth Factor-b1 Accelerates Resorption of a Calcium Carbonate Biomaterial in Periodontal Defects. J Periodontol 2007;78:723-729. KARUPPANAN P. SASIKUMAR, SUGUMARI ELAVARASU, AND JAYAPRAKASH S. GADAGI. The application of bone morphogenetic proteins to periodontal and peri-implant tissue regeneration: A literature review. J Pharm Bioallied Sci. Aug 2012; 4(Suppl 2): S427–S430. SUBRAMANIAM M RAO, GAURI M UGALE, AND SHIVARAJ B WARAD. Bone Morphogenetic Proteins: Periodontal Regeneration. N Am J Med Sci. Mar 2013; 5(3): 161–168.

Overview of Race Conflict Theories

Overview of Race Conflict Theories Placid Tankie Race is a term that can be defined using many different ways within the society. In the United States of America, for example, research indicates that white people looks black people as having a darker skin color than black people normally have (Hills, 2002). In addition, the meaning and importance of race does not only varies from place to place, but also changes over time. For example, today, the Census Bureau allows people to describe themselves using different racial category which include six single race options and fifty-seven multiracial categories (U.S. Census Bureau 2012). People can classify each another racially based on their physical characteristics such as skin color, facial structures, body structures, and hair texture. George Riter (2003), define race as a socially constructed category of people who share a common biologically traits that member of a society consider important. According to Loveman (1999), in her article titled IsRaceEssential? outline Eduardo Bonilla-Silva ideology and explanation about the limitations on the study of racial phenomena. Eduardo Bonilla-Silva showed that racial phenomena can be better understood if it is considered as a structural theory of racism. According Loveman (1999), Eduardo Bonilla-Silva identified several limitations of the existing approaches toward racial phenomena including the narrow way racism was considered by sociologists as opposed to systematic and rational, contemporary structure, both overt and covert behavior. The article also stipulates that Eduardo Bonilla-Silva believes that the structural theory of racism based on the concept of radicalized social system can be used to overcome the limitations of racial phenomena in order to improve the understanding of the causes, mechanism, and consequences of racial phenomena. According to Loveman (1999), Eduardo Bonilla-Silva concept of improving the understandin g of racial phenomena was based on confounding categories, reifying race, and analytical distinction between race and ethnicity. In addition, Loveman (1999) demonstrated in her work that the theoretical frame work proposed by Eduardo Bonilla-Silva in order to improve the understanding of the meaning of race and the consequences of racism related to the structural theory of racism was undermined by the different concepts Eduardo Bonilla-Silva used. These include: confounding categories, reifying race, and analytical distinction between race and ethnicity. Loveman (1999) and other sociologists agree with Eduardo Bonilla-Silva about the importance of improving our understanding on racial phenomena, but argued that his structural theory of racism was not the best analytical frame work for understanding the meaning of race and its consequences on the society. Furthermore, these sociologists demonstrated that in order to understand how race shape social relation in the society, race should not be considered as a category of analysis, but race should focus on the processes of boundary construction, maintenance, and d ecline which is a comparative sociology of group making that was built on Weberian concept of social closure (Loveman, 1999). More ever, the view of Eduardo Bonilla-Silva on racial phenomena was supported by other researchers such as Omi and Winant. These two sociologists defended the ontological condition of race based on the circular definitions and essentialist reasoning. In addition, their argument for a distinction between race and ethnicity was based on a particular reading of U.S. history rather than on any analytical foundation. Furthermore, Omi, Winant, and Eduardo Bonilla-Silva never define racial category without referencing to race. Mean while Loveman (1999) and other sociologists like Wacquant argued that this analytical pitfall of referencing to race in the definition of racial category can be avoided successfully by considering race as a category of analysis in order to gain analytical study of race as a category of practice.Adopting this analytical frame work which focus on the processes of group making and categorization of essentializing schemas. Generally, one can explore to what extent a particular essentializing vocabulary is related to a particular form of social closure and its consequences. Therefore, it becomes a question to what extent, systems of classification, stratification, and social injustices can be supported by ideas that race can be distinct from those informed by a discourse of ethnicity or nationality (Loveman, 1999). Again, conflict of race occurs when the majority group of the society feels that the different cultures, morals, and values of the minority group causes deviance to the society. The conflict perspective is a frame work for building theory that looks society as an arena of inequality that generates conflict and changes. The race-conflict theory sees the society as an inequality and conflict between people of different racial and ethnic categories. The race-conflict theory is in accordance with the content of race because it highlights how race factors are linked to inequality in terms of several factors such as education, power, money, and social prestige. For example, the United States of America, which has people from different countries worldwide, is considered as the land of opportunity and freedom, and it is also a country that is considered notorious for racial discrimination. From the beginning of this country, just like men have power over women, white people have numerous adv antages over people of color, including higher income, more schooling, better health and longer life expectancy. Racism has been one of the most important issues that the society have been facing and fighting for the past decades. Currently, racism has declined, but it is still an important issue that needs to be addresses always. Although removing racism from the world will caused a lot of sacrifices and suffering, I hope that people will be able to overcome racism, and live in a world where they do not care about an individual skin color or nationality. References Hill, Mark E. Race of the Interviewer and Perception of the Skin Color: Evidence from the Multi-City Study of Urban Inequality. American Sociology Review. Vol. 67, No.1 (Februrary 2002): 99-108. Loveman, Mara. Is Race Essential? America Sociological Review: Vol. 64, No.6 (December 1990): 890-98. U.S. Department of Labor, Occupational Employment Statistics. National Occupation Employment and Wage Estimate. 2012. Available at http://www.bls.gov/oes/current/oes_nat.htm