Heinrich's theories Article Example | Topics and Well Written Essays - 500 words

Heinrich's theories - Article Example Freud A. Manuele, the writer of this article reports that Heinrich’s law about the industrial accidents and its causes does not apply to the current situations and thinking. In his article He quotes work of different people who has worked on the same area. He is of the view that knowledge derived from those works seem to have been evolved in the aspects of how accidents take place and their contributing factors.Heinrich by calling him the ‘pioneer’ in the field of accident prevention and considering him to be the promoter of occupational safety and health. Though the article is about dislodging Heinrich’s law it also seems to appreciate his work to be the literature and background to the study which is the positive aspect to Heinrich’s work.This article continues with Heinrich, focusing on the negative aspects of his work by stating his work to be unsound and not valid because of the un- authentication of the kind of methodology and survey documents used by him for the analysis.The Article considers Heinrich’s work to be a non- researched work and makes a call that such work should not be used as a source, but the focus should be driven towards the current knowledge. He supports his view by quoting approved researches and work done on industrial accidents. For example he quotes Walton who is of the view that 85% of the problems in any operation are within the system and are dependably of management, while only 15% lie with the worker which is opposite to what Heinrich’s point of view.

Shear Bond Strength of Nanocomposite Resin

Shear Bond Strength of Nanocomposite Resin ABSTRACT OBJECTIVE: To compare the shear bond strength of nanocomposite resin to superficial dentin and deep dentin using two different dentin bonding systems. METHOD All teeth were sectioned at various levels (Superficial Dentin: Dentin within 0.5-1 mm of DEJ; Deep Dentin: Dentin within 0.5 mm of the highest pulp horn) using a carborundum Disc and embedded in acrylic block of specific size. Selected specimens (60 premolar teeth) were grouped randomly into three groups, the groups were differentiated into superficial dentin, deep dentin and control group which were further divided into sub group a and subgroup b containing 10 teeth each, depending on the bonding agents used. In subgroup A, Tetric-n-bond, and in subgroup B Single bond universal was used. In the control group no bonding agent was used. The specimens were thermocycled for 500 cycles between 5 degree c and 55 degree c water bath for 40 seconds. Finally the specimens were subjected to shear bond strength study under INSTRON machine (UNIVERSAL TESTING MACHINE). The maximum shear bond strengths were noted at the time of fracture (de-bonding) of the restorative material. Results were analysed using ANOVA test, Bonferroni test and paired t test. RESULTS Bond strength values of fifth generation bonding system (Tetric n bond) showed higher mean shear bond strength compared to seventh generation bonding system (single bond universal). There was a significant fall in bond strength values as one reaches deeper levels of dentin from superficial to deep dentin. CONCLUSION- There was a significant difference between the bond strength of fifth generation bonding system (Tetric n bond) and seventh generation bonding system (single bond universal).Decrease in the bond strength values is seen for deeper level of dentin as compared to superficial dentin. INTRODUCTION The success of any dental restoration is based on the high adhesive property of the material. Various materials are available which utilizes this adhesive property such as, glass ionomer cement restoration, composite restorations and pit and fissure sealants. Among these composite resins have been developed since few years in order to provide the best esthetics to the anterior restorations as well as for posterior restorations. Dental adhesive systems are agents used to promote adhesion between composite resin and dental structure, and they should present similar performance on enamel and dentine. Bonding to enamel and dentin has been known to be clinically reliable with the advent of acid etching technique. It differs from enamel, as it has more organic contents, presence of fluid inside the dentinal tubules, smear layer and inherent wetness on the surface[1]. Dentin has been characterized as a biologic composite of a collagen matrix filled with sub-micron to nanometer sized calcium deficient carbonate rich apatite crystallites dispersed between hyper mineralized collagen poor hollow cylinders. It is very well understood that the density of dentinal tubules varies with dentinal depth and as well as the water content of dentin is lowest in superficial dentin and highest in deep dentin. In superficial dentin which contains fewer tubules and the permeation of resin into intertubular dentin will be responsible for most of the bond strength. In deep dentin, dentinal tubules are more in number and hence, intratubular permeability of resins will be responsible for higher bond strength. Two major simplified bonding approaches have been developed namely. Total etch technique –involves the simultaneously removal of the smear layer from both enamel and dentin surface followed by the application of one bottle agent that combines the primer and adhesive in one solution. Self-etching technique – their bonding mechanism is based upon the simultaneous etching, priming and adhesive of the dentin surface in a single bottle[2]. Bonding to enamel was achieved earlier and easier (Buonocore,1955) because enamel is mostly composed of hydroxyapatite crystals. Although it is possible to obtain predictable and reliable adhesion to enamel, adhesion to dentin, which is the largest part of the tooth, has proved to be more challenging because of its heterogeneous nature. The mechanism of dentin adhesion, enhanced by hybrid layer formation between the resin and dentin, was proposed by Nakabayashi (1982). The adequate hybrid layer formation is believed to be essential to create a strong and durable bond between resin and dentin. Adhesive restorations have been widely accepted for both anterior and posterior use in restorative dentistry. Patient’s demands for esthetic restorations have caused a recent increase in the use of tooth colored restorative materials. To achieve clinical success with such restorations, good adhesion between restorative materials and tooth substrates is of crucial importance in order to ensure good marginal sealing, reinforcement of the tooth structure, and longer life of the restoration. During the last two decades, a variety of adhesive systems have been continuously developed in order to produce good adhesion to dental substrates. These great advances in the adhesive dentistry have changed the concepts of cavity preparation based on the principals proposed by GV Black (1955) into more conservative and minimally invasive ones. The current self-etching adhesives provide monomer formulation for simultaneous conditioning and priming of both enamel and dentin. As of today less research are available to indicate the effectiveness of new generation self-etching primers against superficial and deep dentin. Shear bond strength measurements are commonly used to evaluate effectiveness of dentin bonding systems. The aim of the study was to evaluate the Shear Bond Strength of the newer bonding systems on superficial dentine and deep dentin. MATERIALS AND METHOD: The present in- vitro study was conducted in the department of conservative dentistry and endodontic, M.R.Ambedkar Dental College and Hospital, Bangalore. Sixty intact human maxillary pre molar teeth extracted for orthodontic reasons were collected from Oral and Maxillo-Facial Department at M.R.Ambedkar Dental College Hospital. The teeth were stored, disinfected and handled as per the recommendations and guidelines laid down by OSHA and CDC. Teeth selected were randomly divided into three groups of twenty teeth each. Group A, Group B and Control group. Group A and B were further subdivided into Subgroup A Subgroup B, of ten each. All teeth were sectioned at various levels using a Carborundum Disc under copious water and embedded in acrylic block of specific size. Group I: Superficial Dentin – 20 specimens Sub group A – Superficial Dentin (Tetric N Bond) 10 specimens Sub group B – Superficial Dentin (Single Bond Universal) 10 specimens Group II: Deep Dentin – 20 specimens Sub group A – Deep Dentin (Tetric N Bond) 10 specimens Sub group B – Deep Dentin (Single Bond Universal) 10 specimens Group III: Control Group – 20 specimens Sub group A – Superficial Dentin 10 specimens Sub group B – Deep Dentin 10 specimens The occlusal surfaces of teeth were ground on a water-cooled trimming wheel to prepare flat dentin surfaces. Group 1 (Superficial Dentin) Subgroup A All the specimens were etched on the prepared dentinal flat surface with (N Etch), and washed. The surface was blotted with gauze to produce a visible moist dentin surface. The total-etching adhesive (Tetric N Bond) was applied on the prepared dentinal flat surface left undisturbed for 20 seconds and the excess solvent was removed with a gentle stream of air. Light curing was done for 40 seconds with a visible light curing unit. After curing the bonding agent, nanocomposite resin (Tetric N Ceram) was placed on the prepared dentinal surface using Teflon mold and cured according to manufacturers instructions. The same procedure was carried out on the 10 specimens in this group. Subgroup B The self-etching adhesive (single bond universal) was applied on the prepared dentinal flat surface left undisturbed for 20 seconds and the excess solvent was removed with a gentle stream of air. Light curing was done for 40 seconds with a visible light curing unit. After curing the bonding agent, nanocomposite resin was placed on the prepared dentinal surface using Teflon mold and cured according to manufacturers instructions. The same procedure was carried out on the 10 specimens in this group. Group II (Deep Dentin) Subgroup A The same procedure as carried out in the group I, subgroup A is carried out on all specimens in this group. Sub group B The same procedure as carried out in the group I, subgroup B is carried out on all specimens in this group. Group III (Control Group) No bonding agent was applied. Nanocomposite resin was placed and cured according to manufacturers instructions. Specimens were then stored under room temperature for 48 hours. The specimens were then thermocycled for 500 cycles between 50 c and 550 c water bath. A dwell time of 40 seconds were used for each bath. All the sixty specimens were transferred to the Instron testing machine individually and subjected to shear bond strength test. STATISTICAL ANALYSIS: The statistical data derived from the four subgroups were analysed using ANOVA test, Bonferroni test and paired t test . RESULTS: For superficial dentin Higher mean shear bond strength was recorded in Fifth generation bonding system followed by seventh generation bonding system and control respectively. The difference in mean shear bond strength between the groups was not statistically significant (P>0.05). Deep dentin Higher mean shear bond strength was recorded in fifth generation bonding agent followed by seventh generation bonding agent and Control respectively. The difference in mean shear bond strength between the groups was found to be statistically significant (P The difference in bond strength using fifth generation bonding agent in superficial dentin and deep dentin was not statically significant. (P>0.05). The difference in bond strength using seventh generation bonding agent in superficial and deep dentin was statically significant. (P DISCUSSION Adhesion to acid etched enamel was proposed by Buonocore in 1955. Bond strength to enamel or dentin is an important indicator of an adhesive system’s effectiveness. The bonding layer must not only support composite shrinkage stress, but also occlusal loads in stress bearing area to avoid gap formation leading to micro leakage, secondary caries and post operative sensitivity[3]. Bond strength testing and measurement of marginal – sealing effectiveness are the two most commonly employed methodologies to determine bonding effectiveness in the laboratory in predicting clinical performance. Dentin is a dynamic tissue. It represents a challenge to resin based adhesives while the bond strength of enamel has been studied extensively, bonding to dentin with the generation of bonding systems has remain unsolved. The dentin substrate has been characterized as a biologic composite of collagen matrix filled with apatite crystals dispersed between parallel micrometer sized hypermineralized collagenpoor dentinal tubules containing peritubular dentin. The composition of dentin substrate is made up of 50 % minerals, 20% of water and 30% of organic matrix. But as the dentin deepens this composition may change accordingly. This is due to the fact that the superficial dentin has few tubules and is composed predominantly of intertubular dentin. Deep dentin is composed mainly of larger funnel shaped dentinal tubules with much less intertubular dentin[4]. The intertubular dentin plays an important role during hybrid layer formation in superficial dentin and the contribution to resin retention is proportional to the intertubular dentin available for bonding[5]. Adhesive dentistry is based on the development of materials which establish an effective bond with the tooth tissues. Successful adhesive bonding depends on the chemistry of adhesive, on appropriate clinical handling of the material as well as on the knowledge of the morphological changes caused on the dental tissue by different bonding procedures[6]. The rationale behind the bond strength testing is that higher the actual bonding capacity of an adhesive, the better it will withstand such stresses and longer the restorations will survive in vivo. Bond strength testing is relatively easy and fast and remains most popular methodology for measuring the bonding effectiveness of adhesive systems[7]. The results of the present study revealed that superficial dentin presented bond strength values that were statistically higher and different from values obtained in dentin at deep level. Tagami J et al (1990) attributed this either to differences in chemical composition or regional differences in wetness (dentin permeability). Thus there are several factors that may contribute to high coefficient of variation that is often reported in dentin shear bond strength studies. Several earlier reports indicate that the bond strength of resin is highest on superficial dentin and lowest in deep dentin[8]. Suzuki T et al (1988) studied the efficacy of dentin bonding systems based on the site of dentin with reference to the observation of Causton et al that bond strengths to deep dentin were considerably lower than those to superficial dentin. The present study has confirmed the observation of Causton et al that the efficacy of dentin adhesives depends upon the dentin surface from superficial to deep dentin in the tooth tested[8]. Different from etch and rinse adhesives, self-etch adhesives do not require a separate etching step as they contain acidic monomers that simultaneously condition and prime the dental substrate. Consequently, this approach has been claimed to be user friendlier and less technique sensitive, thereby resulting in a reliable clinical performance. Self-etch adhesives are user friendly because of shorter application time and less steps and less technique sensitive because of no wet bonding but simple drying. Comparatively with the self-etch adhesives there is lower incidence of post-operative sensitivity experienced by the patient. This should to a great extent be attributed to the less aggressive and thus more superficial interaction with the dentin leaving tubules largely obstructed with smear layer[9]. This study is in consensus with Suzuki et al, with regard to, higher bond strength at all levels of dentin with TETRIC N BOND which belongs to the-etch and rinse approach. Pegadu Rafeal et al (2010)[4]compared the effect of different bonding strategies on adhesion to deep and superficial dentin and concluded that bond strength obtained in superficial dentin was significantly higher than that in deep dentin for all adhesives tested. They further concluded that the bond strengths of dentin bonding agents at any depth is dependent on the area occupied by resin tags, the area of intertubular dentin that is infiltrated by the resin and the area of surface adhesion. In the present study, comparison (paired t test) among the tetric n bond group, higher mean bond strength was recorded at the superficial dentin level than deep dentin. And comparison (paired t test) among the single bond universal group higher bond strength was recorded at the superficial dentin level than deep dentin. Van Meerbeek et al (2011) [9] recommended that for further optimization of the self-etch approach, synthesis of functional monomers tailored to exhibit good chemical bonding potential following a mild self-etch approach. The approach appears to guarantee the most durable bonding performance at dentin provided that it deals adequately with the debris smeared across the surface by the bur. Micromechanical interlocking is still the best strategy to bond to enamel. Selective phosphoric acid etching of enamel cavity margins is therefore today highly recommended followed by applying a self-etch procedure to both the earlier etched enamel and un-etched dentin. Such mild self-etch adhesives should contain functional monomers with a high chemical affinity to hydroxyapatite. CONCLUSION: At superficial dentin level higher mean shear bond strength was recorded in Fifth generation bonding system followed by Seventh generation bonding system and control group respectively. The difference in mean shear bond strength between the groups was not statistically significant (P>0.05). At deep dentin level, higher mean shear bond strength was recorded in Fifth generation bonding system followed by Seventh generation bonding system and control group respectively. The difference in mean shear bond strength between the groups was found to be statistically significant (P At deep dentin level, statistically significant results were obtained with the Fifth generation (Tetric N Bond) bonding system which had higher mean shear bond strength values compared to the Seventh generation self-etch bonding system (Single Bond Universal). There was a statistically significant difference in shear bond strength values with Fifth generation bonding system and control group ( without bonding system) at deep dentin. There was a significant fall in bond strength values as one reaches deeper levels from Superficial dentin to Deep dentin.

Pet Overpopulation: Cause and Effect of Homeless Pets Essay -- cause a

A harmless visit to the neighborhood pet store turns into a ruthless encounter for me. Every Saturday, Pecan (my dog) and I visit a local pet store to purchase food and treats for her. Pecan and I pass by a dozen of shelter volunteers eagerly showcasing homeless dogs before entering the pet store. Shelter volunteers are special because they are willing to devote their Saturday morning to help homeless pets. On the way I stop and great each volunteer and dog, then I walk away emotionally grieving and trying to holding back tears. My sadness soon turns into anger, when I realize I cannot adopt every homeless pet. The pet population is a increasing crisis in America. In this essay I will discuss the cause and effect of homeless pets, I will begin by explain the anatomy that contributes to pet overpopulation, then I will discuss the consequences encompassing animal breeding, then I will examine the social stance that effects pets, lastly I will conclude by suggesting soluti ons. First, I will begin by introducing the correlation between anatomy and the pet population. T...

Determining The Longetivity Of E.Coli’s Gaining Resistance Ability: A Comparison Between The Bacteriophage T-4 And Antibiotic

The surfacing of a variety of drugs for resisting antibiotic for disease-inflicting bacteria has already been a big issue and at the same a vital dilemma in treating all types of human diseases. This immediately requires another option, a substitute way of providing therapy to the human diseases. It has been found in previous researches and experiments the wonders of having bacteriophages highly considered to be â€Å"healing viruses. † John MacGregor (2003) has brought up an intriguing issue regarding bacteriophages when he wrote his research article entitled â€Å"Set A Bug To Catch A Bug†.Apart from the title, his words were â€Å"As the power of antibiotic wanes, viruses that hijack bacteria and smash them into pieces could be the answer to our prayers†¦Ã¢â‚¬ . He explained in his article the possibilities of replacing antibiotics as the solution to a lot of virus-causing diseases including virus infections. Bacteriophages were first discovered by a British c hemist named E. H. Hankin. It was considered to be a virus in 1915 by Frederick Twort, a British bateriologisy. The occurrence of that first intrigue found by Dr.Hankin paved its way for more discoveries performed by a Canadian microbiologist named Felix d’Herelle. He agreed with Twort when he also considered it to be a virus and then later he named it as a â€Å"bacteriophage†. Upon his successful experimentations, he was confident that these bacteriophages will be very helpful and at the same time when he used them with the children who were almost dying dysentery at a hospital in Paris. The test solutions were distributed to every patient hoping that it will be effective, and fortunately, these cured the children for just one night.With D’Herelle’s primary success, the use of phage therapy was further studied. From then on, the advantages it provides were widely spread globally. These page therapies are utilized in a variety of ways. It can be taken or given topically, orally, can be injected, using enemas and aerosols. Diseases that were treated by this phage therapy included urinary tract infections, typhoid and cholera. The use of phage therapy slowly faded when AMA or the American Medical Association reported contradictory results of using phages. Antibiotic age came in when penicillin was discovered by Alexander Fleming in 1982.Fleming’s discovery flourished for 20 years making the phage therapy out of sight. But still a lot of microbiologists became very attractive to what bacteriophages could provide medically, improving different aspects of health and curing more diseases. There was a time after the Communist era when phages were considered to be the â€Å"last resort† antibiotics when the decline for antibiotics took place. This was indeed an alarming situation worldwide. But this did not become hindrance in reviving the hidden attributes of bacteriophages.Bacteriophages are defined by Toronto, Funke and Ca se (2001) as viruses that host in bacteria and in bacterial cultures, they can be grown easily. This has been significant since bacteriophages are the main sources of multiplying viruses. How do bacteriophages multiply? The basic procedure in which multiplication of viruses happens is just the same as the other viruses and it is not affected by any means by which the entering and the exiting of a virus into a host cell differs. Most life cycles of a virus are difficult to understand but a bacteriophage is an exception.They are the easiest to be learned and be understood. Bacteriophages, also called â€Å"phages†, can be multiplied using two substitute processes. The first one is called the lytic cycle which leaves the host cell to a lysis or death. The second one is called the lysogenic cycle where the host cell lives. T-even bacteriophages such as T2, T4 and T6 are the phage types that are most studied. Using the bacterium Escherichia coli (E. coli) as a host, with the use o f lytic cycle, multiplication of the T-even bacteriophages can be demonstrated easily from one process to another.There are 5 stages involved starting from attachment, penetration, biosynthesis, maturation and release. During the first stage, attachment, the particles of the bactriophage and the bacteria collide. A chemical connection occurs between the attachment site from the virus and the bacterial cells’ complementary receptor site. A chemically produced interaction from the connection enables bonds that are weak to be formed from the two sites by using their fibered tail ends. During the stage of penetration, DNA is being injected by the T-even bacteriophages into the bacterium after connecting occurs.This is done when an enzyme called the phage lysozyme is released by the tail of the bacteriophage which in turn destroys the walls of the bacterial cell. In the penetration process, the phage’s sheath tail contracts and the core of the tail enters the cell wall. If the core’s tip has already reached the plasma membrane, the DNA from the head of the bacteriophage will pass through the tail core, it will eventually enter the bacterial cell. During the stage of biosynthesis, the DNA of the bacteriophage will initiate synthesis direction of the components of the virus by the host cell.Once the components of the virus are being put in place and are brought together into virions, the maturation stage occurs. When the lyses of the host cell and the new virions have already been released, it is referred to as the release stage (Toronto, Funke and Case; 2001). Bacteriophages have been found to exhibit a lot of features. They are tested to be of big use with local infections in relation to poor supply of blood like diabetic ulcers and infections of the bone. Unlike antiobiotics, these phages were keenly observed to multiply inside their host cell which enables them to penetrate more deeply to the area being infected.Another distinguishing feature of phage therapies is its ability to inflict no allergies, resulting to a fewer side effects. Phage therapies in addition are easier and are cheaper to produce than antibiotics. On the other hand, bacteriophages have their limitations concerning their fatality once they have already killed the harmful bacteria. But these issues should not lower the hopes of the society depending on the future developments of phages. In an interview (Society for Gen. Micro. , 2008), they have shared that modern scientists and researchers have already found ways of prolonging the lifespan of viruses.This new and possible idea is by combining them chemically with polymers but still this is limiting since it will likely cause poisoning of the blood and is surely a big threat to one’s life. The main objective of this project is to determine the longetivity of the bacterium Escherichia coli’s gaining resistance ability in two different viral invaders: the bacteriophage T-4 and an antibiotic . At the end of this project, results should report a comparison between these two, answering which has the longest and the most effective invading mechanism. B. METHODS AND PROCEDURES (EXPERIMENT PROTOCOL)Throughout the following procedures of this project, a strict Aseptic Technique will be used. During the whole duration of the experiment, a strict technique called the Aseptic Technique will be applied. According to a web article research, written by Hauswirth and Sherk (2007), they defined the aseptic technique as an accumulation of unique practices acquired and a set of processes undergone whose conditions are carefully controlled with an objective of minimizing pathogen contamination. In any type of clinical setting, the technique is used to maximize and stabilize pathogenic organisms’ absence.Its main goal is to simply protect a patient from infection and cease any possible spreading to other body parts. Prevention of infections are not achieved simply by sanitizing or disinfecting. In about more than 27 million surgical operations, surgical sites are the third most prone to more hospital infections prolonging, in effect, the hospital stay of the patient and at the same time, hospital bills become so expensive. The estimate was according to CDC or Center for Disease Control and Prevention (Hauswirth and Sherk, 2007).The main objective of performing this experiment is to identify the required length of time for a common bacterium called Escherichia coli (E. coli) to achieve its maximum log phase growth. When these cells have already arrived in its expression of maximum amount of bacteriophage receptors, it will eventually lead to an immediate vulnerability to infection. The bacterium E. coli must always be utilized at this stage of growth all through out the procedures to be able to achieve desirable results upon comparing of two different experiments.In beginning the procedures of the experiment, first, an overnight growth of culture will be prep ared to be able to supply the growth curve with inoculum. The growth of the culture will be done in a shaking incubator with a temperature of 37 degrees Centigrade. The culture preparation will also be dependent on what culture is available, its slope, its colony or plate, and inoculate broth of the culture. Second, a 1 ml of culture that will be prepared overnight and a 99 ml of inoculate nutrient broth (NB) will be taken and will be placed in a flask that is sterilized and flat-bottomed type.Through a process called resuspension, a sterilized tube containing a sample of 5 ml will be gently swirled, will be collected and will be marked Time Zero. The sterilized flat-bottomed flask will be placed inside the shaking incubator. Third, samples containing 5 ml each will be collected at a per hour interval. This will be done for 8 consecutive 8 hours and will be marked Time 1, Time 2, Time 3, Time 4 . . . Time 8. All samples will be stored at +4 degrees Centigrade. Fourth, the remains of the culture that has been prepared overnight will be left for one more night.At exactly 9 am the next day, a last sample of the culture remains will be collected. Fifth, from a sample of 400 nm and another sample of 450 nm, the OD of each sample will be measured. The LB or NB will be used but will be left blank if necessary. If in case, the OD will exceed 1. 0, both sample 1 and sample 2 that were used in LB and NB will be diluted and will be read for the second time. Sixth, the strict aseptic technique will be used in preparing for colony counts in each sample. The amount of workable cells (per ml) will be identified.Seventh, plotting will be done. A growth curve will be plotted and both the cell number and time will be involved in doing this. Eighth, another growth curve will be plotted. This time cell number and OD will be involved in the plotting. Ninth, the required time to reach the midway of the log phase growth will be identified. In doing this, cells within the time length , identified prior to the succeeding experiment, will be grown. Tenth and last step of these experiment procedures, the connection between the cells and the OD will be analyzed.All results acquired all through out the process of this experiment will be recorded and will be evaluated accordingly. References: Hauswirth, K. & Sherk, S. D. (2007) Aseptic Technique [Internet]. Available from < http://www. surgeryencyclopedia. com/A-Ce/Aseptic-Technique. html> [Accessed 8 May 2008] Tortora, Funke & Case (2001) Microbiology: An Introduction. 7th ed. Addison-Wesley Longman, Inc. Craigie, J. (2002) The Significance and Applications of Bacteriophage in Bacteriological and Virus Research [Internet]. Available from [Accessed 8 May 2008]

Foreign Policy Judiciary Politics Essay

1. Although the power of the national government increased during the early republic, these developments often face serious opposition. Compare the motives and effectiveness of those who opposed the growing power of the national government in TWO of the following: Whiskey Rebellion, 1794 Virginia and Kentucky Resolutions, 1798-1799 Hartford Convention, 1814-1815 2. To what extent did the Jeffersonian Republican’s of economic boycott in the years 1807 – 1812 affect the new nation? 3. To what extent was the early United States foreign policy a primarily defensive reaction to actual or perceived threats from Europe? Evaluate with regard to United States foreign policy on TWO major issues during the period from 1789 – 1815. 4. Analyze the contributions of TWO of the following in helping establishing a stable government after the adoption of the Constitution John Adams Thomas Jefferson George Washington 5. Explain the influence of TWO of the following on the U.S. decision to go to war in 1812. Embargo policies of Jefferson and Madison British impressment of American seamen Settlers’ conflicts with Native Americans Expansionist goals of the war hawks 6. Compare and contrast the political and economic views of the Hamiltonian Federalists and the Jeffersonian Republicans. When, why and how did the differences between the two parties blur? 7. Evaluate the relative importance of domestic and foreign affairs in shaping American politics in the 1790s. 8. â€Å"Since the treaty of Ghent addressed none of the issues for which the United States had fought, the War of 1812 has no positive consequences for the American nation. Assess the validity of this statement 9. To what extent was the Election of l800 aptly named the Revolution of l800? Respond with reference to 2 of the following areas Economics