Friday, May 22, 2020
The Use Of Dna Tests For Hair And Blood Samples - 897 Words
Evidence to Convict Innocent People Scientific breakthroughs now allow the use of DNA tests for hair and blood samples that are about as reliable as fingerprint matching. While the evidence assists law enforcement, it allows defense attorneys to reopen cases to reevaluate solving crimes. Introduction When was the last time you have mistaken someoneââ¬â¢s identity? What did the last person in class have on today? Wrongful convictions may begin during the investigative process. Police misconduct or mistaken eyewitness testimony can ruin the rest of a personââ¬â¢s life. The criminal justice system can be changed to prevent the latter by reforming the type of evidence allowed to be used when convicting a person. Most cases of wrongful conviction are either police initiated, which begin with the assumption that a specific person is guilty, or witness initiated, which contains an articulate eyewitness testimony. Police Initiated Police investigations often begin with tunnel vision. Tunnel vision occurs when the police focus on one suspect and do not go through a thorough investigation. Tunnel vision usually obtains biases and the real criminal gets off free. They contain faulty labs, the ââ¬Å"old boy methodâ⬠, and manufacturing evidence to fill in holes. They also contain police misconduct by the use of snitches (con game), accomplices (turning in of a partner for a lighter sentence), and coerced confessions. Witness Initiated Witness initiated convictions are usually forShow MoreRelatedThe Importance of Dna Evidence1575 Words à |à 7 PagesThe Importance of DNA Evidence What is DNA? Is it these winding strands that look like ladders or is it what gives a person blonde hair and blue eyes? Actually, DNA is both of these things. DNA is a personââ¬â¢s genetic makeupââ¬âtheir hereditary blueprint passed on by their parents. It is a part of almost every cell in the human body. In each cell, a personââ¬â¢s DNA is the same; it stays the same throughout their lifetime. 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This principal hinges on the fact that any time there is contact between two surfaces an exchange of material will take place. (Oien, 2009) In this paper, I will prove how Forensic Hair Analysis and Forensic Hair comparison and studies if properlyRead MoreDna Analysis : Dna Profiling725 Words à |à 3 PagesTammy Venhuda Mrs. Paris P.4 English 7-8 10-20-17 DNA Profiling Hook: Have you ever thought about your personal DNA and why it is important to you? Besides showing factors of how you grow, develop, and function, your DNA has more to it. What is DNA profiling? DNA profiling is when someone uses DNA to identify someone, make sure someone is not being wrongly accused, or to claim criminals. But there are pros and cons to DNA profiling. This is because some people are for it and others are againstRead MoreA Brief Look at DNA Profiling1366 Words à |à 6 PagesDNA profiling has several advantages in helping solve crimes, however, there are still disadvantages to this technique. DNA profiling can be beneficial, as well as detrimental to the society we live in. DNA profiling has become the most widely used tool in the field of forensics because of the advantages it has to offer, although there are some drawbacks when it comes to utilizing this technique. DNA profiling has greatly enhanced law enforcement investigation by helping determine the suspect i nRead MoreForensic Examination Of Forensic Science1434 Words à |à 6 Pagespossibly lead to a suspect. The reliability of forensic evidence testing is a widely debated topic in the world of forensic science. The new ââ¬Å"Goldâ⬠standard in evidence is DNA analysis, because of its reliability. Finger printing as well as ballistics are often used but are said to be imperfect compared to DNA analysis. DNA analysis is deemed the most reliable because it has faced rigorous scientific experimentation. Fingerprinting is one of the oldest tool of forensic analysis. Fingerprinting isRead MoreDna Profiling And The Criminal Justice System1372 Words à |à 6 Pagesalthough police were able to obtain a semen sample from her murderer the case remained unsolved. In 1986 the killer struck again murdering 15 year old Dawn Ashworth, once again leaving behind semen, but this time the police were able to use DNA profiling to match the semen to a suspect. Colin Pitchfork became the first person to be caught based on mass DNA screening, and the first to be convicted based on DNA profiling. The use of Deoxyribonucleic Acid (DNA) in the criminal justice system has greatlyRead More Dna And Crime Essay1288 Words à |à 6 Pages DNA and Crime nbsp;nbsp;nbsp;nbsp;nbsp;Deoxyribonucleic Acid - the fingerprint of life also know as DNA was first mapped out in the early 1950ââ¬â¢s by British biophysicist, Francis Harry Compton Crick and American biochemist James Dewey Watson. They determined the three-dimensional structure of DNA, the substance that passes on the genetic characteristics from one generation to the next. DNA is found in the chromosomes in the nucleus of a cell. quot;Every family line has itââ¬â¢s own unique patternRead MoreEffects Of Temperature On The Quality Of Dna Extracted From Manila Envelopes1526 Words à |à 7 Pagesquality of DNA extracted from Manila envelopes Research Proposal Janet Boateng November 15,2014 First draft Forensic Biology 5410 Abstract/summary: In the case of mail threat to an individual, it is possible that DNA evidence could be left by the perpetrator on the adhesive strip of a manila envelope. The process of delivery mail via U.S. Postal Services may take from 3-7 business days, with temperature factoring into the quality of analysis of any DNA. If mailRead MoreThe Crime Scene Investigation Training1735 Words à |à 7 PagesTraining Report includes a brief outline of two training modules: Hair and Crime Scene Training-Blood Crime Scene Training. These modules provide Crime Scene Investigation trainees with the adequate information they need to prepare them to know what to look for when looking for blood and hair samples at a crime scene. This also instructs the trainee the significance of how to avoid tampering with evidence and how to properly collect a sample. The men and women trainees have classroom tutorials on the
Saturday, May 9, 2020
Types Of Households Ladera Ranch - 1720 Words
Types of Households in Ladera Ranch The total number of households in Ladera Ranch is 7,161 at the time of this report. Out of these households, 71.9% are occupied by homeowners. There are 5,890 families in Ladera Ranch. These families comprise of 4,996 two-parent homes and 894 single-parent homes. The average number of people in one home is 3.15 (ââ¬Å"Current,â⬠2014). The median home value is $624,300 (United States, 2012). With this high rate of home ownership and family occupation in Ladera Ranch, residents are more inclined to invest their time and money into their community. These homeowners are interested in investments which increase their quality of life and the value of their properties. Exhibit D, above, is an extract fromâ⬠¦show more contentâ⬠¦Family Entertainment Center According to the White Hutchinson, a Family Entertainment Center (FEC) is a community-based facility. FECs are usually located near residential areas. A successful FEC needs to have an average annual frequency of visits of more than 6 times. The average length of a visit ranges from 2 to 2.5 hours and the average spending per visit ranges from $8 to $14. An FEC needs to include multiple anchor attractions in various categories to attract and retain visitors. Examples of these attractions are bowling lanes, skating rinks, laser tag facilities, miniature golf courses, climbing walls, childrenââ¬â¢s edutainment experiences, video arcades, simulator / motion theater attractions, etc. In addition, birthday party and food and beverage facilities are also major parts of an FEC due to the large percentage of income they generate (White Hutchinson). According to Bederka (2014), there has been a decrease in participation rate and average spending in FECs since 2003. However, there is ââ¬Å"no (spending) change in the top 20 percent of income householdsâ⬠on FEC facilities. This signals a potential market for an FEC in the Ladera Ranch community as the average income of this town is nearly double the average income of the state of California. The market profitability for this business also proves to be stable during economic and technological changes. Moreover, Bederka (2014) also highlights that the FEC market is ââ¬Å"shifting to both
Wednesday, May 6, 2020
Vinegar Battery Investigatory Project Free Essays
Vinegar as Alternative Battery An Investigatory Project Presented to The Faculty of the High School Department Surigao Education Center Km. 2, Surigao City _______________________________________________ In Partial Fulfillment of the Requirements in Physics IV _______________________________________________ By: Edradan, Dhaniel Jefferson Yaun, Mary Allyssa Concon, Leonel Galos, Jancirfil Jimena, Rimar Villarojo, Kerr March 2013 APPROVAL SHEET Vinegar as Alternative Battery Prepared Submitted by MARY ALLYSSA YAUN, DHANIEL JEFFERSON EDRADAN, LEONEL CONCON, JANCIRFIL GALOS, RIMAR JIMENA, KERR VILLAROJO has been examined and is recommended for approval and acceptance for ORAL EXAMINATION. GIOVANNI P. We will write a custom essay sample on Vinegar Battery Investigatory Project or any similar topic only for you Order Now DOSANO Adviser ââ¬âââ¬âââ¬âââ¬âââ¬âââ¬âââ¬âââ¬âââ¬âââ¬âââ¬âââ¬âââ¬âââ¬âââ¬âââ¬â- PANEL OF EXAMINERS APPROVED by the committee on ORAL EXAMINATION with the grade of__ on February 2013. ZALDY P. BELOY, Ph. D _______________ ______________ Member Member ___________________ Member ACCEPTANCE in partial fulfillment of the requirements for SCIENCE IV Acknowledgement There are a lot of people the researchers would wish to thank for their generous and unselfish help in realization of this study. First and foremost, Almighty God for giving the researchers the patience and perseverance to tackle the study; To their parents who gave them their full support, financially and morally. To Sir Giovanni Dosano, who became the researchers great and dearly research paper adviser who patiently helped and encourage them finish the study. The researchers salute for the continuous help and guidance. And most especially, Sir Zaldy P. Beloy, Ph. D. for helping the researchers to understand revise and emphasize the importance of the study. TABLE OF CONTENTS Title Page (i) Approval Sheet (ii) Acknowledgement (iii) Abstract (iv) Table of Contents (v) CHAPTER I: THE PROBLEM AND REVIEW OF RELATED LITERATURE Introduction 4 Review and Related literature 5 Statement of the Problem 5 Significance of the Study 5 Scope of Limitations 5 Definition of Terms 7-8 CHAPTER II: METHODOLOGY Research Design 9 Materials 9 General Procedure 9-10 Observation 10 Flow Chart of Methodology 11 CHAPTER III: RESULTS AND ANALYSIS CHAPTER IV: SUMMARY, CONCLUSION, AND RECOMMENDATION Summary 13 Findings 13 Conclusion 13 Recommendation 13 References 14 APPENDICES 15 à CHAPTER I THE PROBLEM AND REVIEW OF RELATED LITERATURE Introduction We all know that the world is now facing an energy crisis and everyone is trying to do something about that. Now you can show everyone that electrical energy or electricity can be made from air and vinegar. After all, vinegar are freely available everywhere. Battery is a device that converts chemical energy directly to electrical energy. It consists of a number of voltaic cells; each voltaic cell consists of twoà half-cellsconnected in series by a conductive electrolyte containing anions and cations. One half-cell includes electrolyte and the electrode to whichà anionsà (negatively charged ions) migrate, i. e., theà anodeà or negative electrode; the other half-cell includes electrolyte and the electrode to whichà cationsà (positively charged ions) migrate, i. e. , the cathodeà or po sitive electrode. In theà redoxà reaction that powers the battery, cations are reduced (electrons are added) at the cathode, while anions are oxidized (electrons are removed) at the anode. The electrodes do not touch each other but are electrically connected by theà electrolyte. Some cells use two half-cells with different electrolytes. A separator between half-cells allows ions to flow, but prevents mixing of the electrolytes. Vinegar is a solution of acetic acid and water. Acids donate H+ ions into a solution. The concentration of these ions is what determines whether a solution is a strong electrolyte (conductor) or a weak one. Since vinegar has a low concentration of acetic acid(about 5%) it only has a pH of only ~2. 4 and so is a weak acid. Review of Related Literature According to Doctor Sergey stated that vinegar have lots of electronic magnet cells that can because electricity will small megabytes. During the experimentation, the researchers found out that 4 pieces of calamodins are enough to light a certain bulb. It is also found out that a coin which is hot copper and copper wires are not the appropriate materials in making the experiment. Instead of the materials mentioned used the copper coin and alligator wire. The galvanized nail also matter in lightning the bulb. Use the 1. inches galvanized nail to balanced the flow of the current. Statement of the Problem The researchers aimed to answer the following: 1. How much amount of vinegar that can make the light emitting diode bulb light? 2. Can vinegar bean alternative battery? Significance of the Study This activity is done by the researcher with an important purpose. This activity is launched solely for the Fourth Year High school students of Surigao Education Center. Scope and Limitations This study focused only on commercial vinegar as an alternative source of energy. Definition of Terms Battery ââ¬â a device consisting of one or moreà electrochemical cellsà that convert stored chemicalà energyà into electrical energy. Vinegar ââ¬â a liquid substance consisting mainly ofà acetic acidà (CH3CO2H) andà water, the acetic acid being produced through theà fermentationà ofà ethanol byà acetic acid bacteria. Electricity ââ¬â is the set of physical phenomena associated with the presence and flow ofà electric charge. Acids ââ¬â is a substance which reacts with aà base Electric Source ââ¬â aà physical propertyà ofà matterà that causes it to experience aà forceà when near other electrically charged matter. Cat ion ââ¬â the ion in an electrolyzed solution that migrates to the cathode;à broadlyà :à a positively charged ion Anion ââ¬â the ion in an electrolyzed solution that migrates to the anode;à broadlyà :à a negatively charged ion | | Anode ââ¬â the electrode of an electrochemical cell at which oxidation occurs: as Cathode ââ¬â à the electrode of an electrochemical cell at which reduction occurs: Current ââ¬â a flow of electricity Voltage ââ¬â electric potential or potential difference expressed inà volts Galvanized Nail ââ¬â Galvanizedà nails are a special type ofà nailà used in construction. They have undergone a special galvanizationà process, which involves covering them with aà zincà coating in order to form a protective barrier. This barrier also works as aà sacrificial anode, which means the coating will dissolve before the metal inside does, if the barrier itself becomes damaged. Copper Wire ââ¬â Copperà has been used inà electric wiringà since the invention of theà electromagnetà and theà telegraphà in the 1820s. The invention of theà telephoneà in 1876 created further demand for copper wire as an electrical conductor. CHAPTER II METHODOLOGY Research Design The descriptive and experimental design was used in this study. Materials/Equipment * Vinegar (Commercial) * 1 meter Alligator Wires * 1.5 inch Galvanized Nails * 1.5 inch Copper wires * Tape * 2 Cups * Led bulb General Procedure A. Preparation on Materials 1. Prepare and check all the materials needed B. Set up the prepared materials 1. Share first the vinegar in packs 2. Fill the cups with vinegar 3. Then place a type at the top of the cups then put two different holes C. Connecting the wires 1. Attach the galvanized nail and copper wires both side. Do not allow the copper wire and galvanized nail touch each other. . Attach the alligator wire to the copper wires and galvanized nails 3. Attach the alligator clip to the bulb and it will light up. C1. Observation C2. Collection of Data C3. Tabulation C4. Evaluation C5. Conclusion Flow Chart of Methodology Conclusion Tabulation Collection of Data Evaluation Observation Experimentation Setting up the Prepare Materials Preparation CHAPTER III RESULTS AND DISCUSSION Table. 1 TRIAL| AMOUNT OF VINEGAR| OBSERVATION| 1| 200 ml| The led bulb havenââ¬â¢t produced light| 2| 400 ml| The led bulb still havenââ¬â¢t produced light| 3| 800 ml| The led bulb produced little light| | 1000 ml| The led bulb produced great light| Based on the table above, the researchers first prepared in trial with the amount of vinegar 200ml but it does not make the led bulb light. On the second trial, they prepared 400ml but again it does not work. By the third trial, with the amount of 800ml of vinegar, it only produced a little amount of light on the led bulb. On their last trial, they tried to use more vinegar with the amount of 1000ml, and then it already made the led bulb produced great light. CHAPTER IV SUMMARY, FINDINGS, CONCLUSION AND RECOMENDATIONS In this chapter the researchers will be giving the summary of the findings of their study. The conclusions on the different problems that arose and to the recommendations on the kinds of improvement their readers can do in the near future. Summary With the use of vinegar it is proven effective when the copper wire and galvanized nail is inserted in it. Based on the observation of the researchers through experimentation it was proven that Vinegar can be an alternative battery and can be a good source of electricity and further justified based on the result of the study. Findings Based on the experiment conducted, the following were the findings of the study: 1. With the amount of 1000ml of vinegar, it can make the led bulb light with the use also of galvanized nail and copper wire 2. Vinegar contains small amounts of acetic acid that can make the led bulb light Conclusions Based on the findings the researchers have conducted, the researchers therefore conclude that vinegar can be an alternative battery and a good example of producing light. With the galvanized nail and copper wire as the negative and positive the two components shouldnââ¬â¢t be attach with other with the flow of electricity there should only be one direction Recommendations The experiment is easy, you can spend lesser. This is recommended to all the people. By this study, a lot of people can get and get idea how to save money, and energy at home. Someday, vinegar will be a source of electricity. The researchers also recommend this to the following: * Students ââ¬â this can help them to be their guide anf for them to try something new and develop their skills in investigatory. Teachers ââ¬â to take this as an example to the students for them to encourage themselves to discover other kinds of alternative battery. The researchers recommend two title of further studies: 1. ââ¬Å"Animal Urine as Alternative batteryâ⬠2. ââ¬Å"Vinegar as a battery for Calculatorâ⬠REFERENCES http://tag. wonderhowto. com/vinegar-battery/ http://hilaroad. com/camp/projects/lemon/vinegar_battery. html http://www. youtube. com/watch? v=pq9NuvdLZaUfeature=gv http://www. termpaperwarehouse. com/search_results. php? query=vinegar+alternative+battery+ APPENDICES How to cite Vinegar Battery Investigatory Project, Essay examples
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