Premium Essay

Crimelab - Bloodstain Analysis

In: Science

Submitted By witchinglights
Words 3131
Pages 13
LAB REPORT

BLOODSTAIN ANALYSIS

(http://www.crimescene-forensics.com/images/Blood_Spatter_001B.gif)

COURSE: CHM 1107: Introduction to Forensic Science - Professor Ira S. Krull

DATE: 10.27.11

INTRODUCTION

Blood is a biological fluid found in animals that delivers necessary nutrients and oxygen throughout the body and carries away metabolic waste products. The average adult has a blood volume of roughly 5 liters, comprising of plasma, blood cells and platelets, and it is usually red in color, though not always. The most abundant cells in vertebrate blood are red blood cells, constituting about 45% of whole blood. These cells contain hemoglobin, an iron-containing protein, which distributes oxygen throughout the human body.

Blood is circulated around the body through blood vessels by the pumping action of the heart. In humans, blood is pumped from the strong left ventricle of the heart through arteries to peripheral tissues and returns to the right atrium of the heart through the superior vena cava (see Fig 1). It then enters the right ventricle and is pumped through the pulmonary artery to the lungs and returns to the left atrium through the pulmonary veins. Blood then enters the left ventricle to be circulated again.

(Fig 1: http://upload.wikimedia.org/wikipedia/commons/thumb/e/e5/Diagram_of_the_human_heart_%28cropped%29.svg/220px-Diagram_of_the_human_heart_%28cropped%29.svg.png)

Blood is a type of evidence found most often at violent crime scenes and submitted to forensic laboratories for further identification and analysis. The investigators at the crime scene always seek to answer three questions when in contact with bloodstains: (1) Is this blood? (2) Is it from a human? (3) How closely does it match the blood of the victim or suspect? Answers to these questions can be found through several analyses and tests carried out by the forensic…...

Similar Documents

Premium Essay

Analysis

...Analysis & interpretation of financial statements – Ratio Analysis 1 Ratio Analysis Application • Ratio analysis is a means to an end. The end being to understand a company’s results for a year using its financial statements. • Ratio analysis may highlight unusual results or clarify trends, enabling various users of accounts to make informed decisions relating to the company. • For ratios to be useful, comparisons must be made - on a year to year basis, or between companies. On their own they are useless for any sensible decision making. 2 Ratio Analysis 1 Lecture example 1 How do the following users of financial statements benefit from ratio analysis? (a) Shareholders (b) Potential investors (c) Bank and other capital providers (d) Employees (e) Management (f) Suppliers (g) Government 3 Ratio Analysis Lecture example 1 (a & b) Shareholders and potential investors will use ratios to help them come to a decision on buying or selling the share of the company. (c) Banks and other providers of loan capital will assess whether further loans should be made to the company. (d) Management will use ratios to highlight weak performing areas in order to focus their attention on these areas. (e) Employees may use them as a basis for wage negotiation. (f) Suppliers may use ratios to assess creditworthiness. (g) Governments may use them for statistics or for assessing the worthiness of a government grant. 4 Ratio Analysis 2 Categories of......

Words: 1991 - Pages: 8

Free Essay

Macbeth Character Analysis

...Macbeth Character Analysis Macbeth: At the start of Shakespeare’s ‘Macbeth’, Macbeth the main character is the "bravest" soldier and the honorable Thane of Glamis. His rank and nobility are of great value, and he seems to be fit for his status. But his encounter with the witches awakens in him a deep impatient ambition. Immediately after the first prophecy of being Thane of Cawdor becomes true the "horrid image" of the murder of King Duncan in order to become king himself crosses his mind. He is not totally cold and solely ambitious as shown by his terror of the murder image, which thoroughly defies his loyalty. There is love in Macbeth as shown by his letter to Lady Macbeth in which he calls her his "dearest partner of greatness." Macbeth is already thinking about being king but he is undecided about whether it is better to succumb to the temptation presented by the witches or to wait for Fate to crown him. Banquo warns him that at times evil forces "tell us truths . . . to betray's in deepest consequence." Even though he does not state it out loud, Macbeth does care about morality and religion, as demonstrated in his soliloquy (act 1 scene 4 line 12-28) where he lists the three reasons why he should not kill Duncan: he is "his kinsman," "his subject" and "his host." Macbeth adds that "Duncan hath born his faculties so meek, hath been so clear in his great office, that his virtues will plead like angels." Lady Macbeth knows her husband and feels that he is "too full......

Words: 1287 - Pages: 6

Premium Essay

Analysis

...Forecasting and Valuation Analysis Our group is going to use Discounted Discount Method to calculate the value of per share about Medtronic, and we assume that the terminal year is the 6th year. Assumptions According to the 10-K, we can easily get the basic information (shown in the form below), and by using the function of equity value equal to dividend divide require cost of equity(r) minus growth rate and the assumption of the constant growth rate, we can calculate the growth rate to be 15.17%.And we also assume the number of shares outstanding to be constant in the next 6 years. | |2012 |2011 |2010 | |Number of shares outstanding |1053.9 |1077.4 |1106.3 | |Dividend to shareholders | $1,021.00 | $969.00 | $907.00 | |EPS | $3.43 | $2.87 | $2.80 | | ROE |21.14% |19.39% |21.18% | |DPS | $0.97 | $0.90 | $0.82 | |Net earing | $3,617.00 | $3,096.00 | $3,099.00 ...

Words: 419 - Pages: 2

Premium Essay

Analysis

...Starbucks Strategy Analysis | Business Strategy | Assignement | 24/05/2010 | | | | “Making your organisation fit for purpose” Starbucks Coffe Company is the world leading brand in roasting and distributing coffee. The company owns now more than 15 000 coffee shops around the globe: it is settled in North America, Latin America, Europe, Middle-East and Asia. The diversity and depth of its offer (from smooth to extra roasted coffee, African, Arabian or Latin, and all the muffins, cookies and sandwiches) allow them to count on an international exposure that has last for many years. Still, their business tends to be flattening. And the number of competitors in their core-business market, even if the competition stays way back them, is growing constantly. Considering these facts, the objective of Starbucks is to strengthen its leadership on the market. We were then approached by Starbucks in this particular goal. In this folder, you will find an entire analysis of the external environment of Starbucks Coffee Company: the macro-environment, the competitors and market and the stakeholders’ expectations will lead to being aware of opportunities and threats. Then, we went on the study of the internal capabilities: the resources and competences, the sustained competitive advantage and the diagnosis of strategic capability that will permit us to define Starbucks’ strengths and weaknesses. [Thus, owing to the results obtained, we endeavour to recommend Starbucks......

Words: 285 - Pages: 2

Premium Essay

Analysis

...strategy? * And consider the organisation's culture. * How has this influenced past strategies and is it likely to influence future strategy or constrain attempts to change strategy? * Beware of regarding different frameworks of analysis as distinct and separate; they relate to each other. For instance, the results of a value chain analysis could be put in the context of data from a PESTEL and 5-Forces analysis and are likely to provide more insight if they are. * Pull together your analyses and ask: 'What are the major issues that future strategy needs to address?'. * In all of this consider what information is there in all the tables, annexes and appendices? What are they and how do they relate to and inform the questions above? Step 3: Develop and Evaluate Strategic Options (Planning – Assignment B) * Use the results of these analyses as a starting point for developing strategic options. You will have begun to think of what the organisation might do during your analyses. Note these down. * But don't just rely on these. Generate more systematically other options by using some of the frameworks in part II, in particular Chapter 10, of Exploring Corporate Strategy – for example a TOWS matrix builds on a SWOT analysis that you have carried out; and Chapter 10 provides checklists of generic strategic options. * Evaluate the options by asking the following questions: * Which are most suitable in terms of the strategic position of the......

Words: 879 - Pages: 4

Premium Essay

Blood Spatter Analysis

...Running Head: Blood Splatter Analysis Blood Spatter Analysis Kenisha Callahan AJS 592 Dr. Steven Gilbert Blood Spatter Analysis Blood spatter analysis is “the systematic assessment of the visual patterns of bloodstains at crime scenes based on the physics of fluids” (Brodbeck, 2012, p. 51). It has been studied since 1895 when Dr. Eduard Piotrowski published "Concerning the Origin, Shape, Direction and Distribution of the Bloodstains Following Head Wounds Caused by Blows." The next acknowledgment of BPA was in 1955 when Dr. Paul Kirk entered blood splatter evidence in the State of Ohio v. Samuel Sheppard case. Dr. Herbert MacDonell started training personnel of law enforcement about blood spatter analysis in 1971. Since that time, bloodstain pattern analysis has grown and continues to develop. Blood pattern analysis is used in a lot of crime scene investigations and can hold valuable information. Blood spatters can indicate important clues such as, the number of blows to the victim, the force of the blows, weapon used, and position and/or movement of the victim and suspect. Blood spatter can be classified into three categories, low velocity, medium velocity, and high velocity (Saferstein, 2011). Low velocity spatter consists of large separate or compound drops with diameters measuring three millimeters or more. It is usually the result of dripping blood.......

Words: 737 - Pages: 3

Premium Essay

Analysis

...purpose of this analysis is to examine a case that I have chosen written by one of my cohorts. While analyzing this case I will focus on key points from the readings to highlight how this case does, in fact, pertain to this reading and other articles that are relevant to the class. Upon conclusion of this analysis, my hope is that the reader will have a better insight of different aspects of management and management conflicts in this workplace. Case Synopsis The particular case at hand involves change in management in the workplace. When a new manager replaces a manger that has been a part of an organization for a while, conflicts can and almost always occur for the manager. The new manager in the particular case simply came in and tried to do his job. He tried to enforce the rules that were in place, but before he was there, these rules were not enforced as much. Once the rules were enforced, conflicts began to arise. After such conflicts arose, a large number of employees left. When the employees left, the star employees that stayed decided to give advice to the mew manager on his working skills and he listened. He implemented what the employees told him and there was almost an immediate change. The branch started performing even better than they were before the other employees left and even became one of the highest performing branches in the company. This case highlights several factors discussed in the readings related to this course. In this analysis I will......

Words: 1925 - Pages: 8

Free Essay

Blood Pattern Analysis

...Blood Spatter Pattern Analysis Kimberley Kanuch-Brown Everest University Abstract Given that blood spatter analysis is an emergent field, with rapidly occurring developments have significant probative implications for the court system, this project will seek to examine the multi-faceted elements of blood spatter analysis to provide an overview of the field’s different dimensions. Focusing on technical developments, analytical interpretation and court relevance, the project will propose that blood spatter’s analysis as a mainstream element of the CSI toolkit results from the combination of physical sciences and analytical rigor which lies at its core. Beginning with questions of technical and physical science, the project will examine the manner in which blood spatter analysis is increasingly capable of understanding how human usage of different weapons impacts the static nature of a given crime scene. Moving to questions of interpretation, the project will touch upon the manner in which information technology is improving the rigor and caliber of analysis, and thus leading to greater continuity and replicability in blood spatter analysis. Concluding, it will examine the manner in which the court system is now viewing blood spatter analysis with greater heft because of these developments. Blood Spatter Analysis and Science Beginning with questions of science, the work of Randall (2009) demonstrates how even the most esoteric of weapons can be analyzed using......

Words: 2999 - Pages: 12

Premium Essay

Analysis

...Harley-Davidson Case Analysis Harley-Davidson Case Analysis Rayzhaun Jones Mississippi Valley State University Strategic Management Dr. Jimmie S. Warren Abstract With the growing global economy, companies are looking for ways to improve their market share. Many excellent firms have learned how to beat their competitors through the implementation of new management, marketing, and manufacturing techniques. Harley-Davidson is one of those excellent companies whom have challenged traditional ideas. We intend to show through this case study that any company can follow Harley-Davidson’s techniques and lead them to excellence. Mission Statement “We fulfill dreams through the experiences of motorcycling by providing to motorcyclists and too the general public an expanding line of motorcycles, branded products, and services in selected market segments.” Vision Statement “Harley-Davidson is an action-oriented, international company, a leader in its commitment to continuously improve its mutually beneficial relationships with stakeholders. Harley-Davidson believes the key to success is to balance stakeholders’ interests through the empowerment of all employees to focus on value-added activities. Company Profile and Case Analysis Harley-Davidson Inc. is an American motorcycle manufacturer. Harley-Davidson specializes in the sales of heavyweight motorcycles that are designed for cruising on highways. Harleys have a distinct design and exhaust sound that have......

Words: 1011 - Pages: 5

Free Essay

Bloodstain Pattern Analysis

...14 December 2014 Blood and Guns The world of Forensic Scientist is an amazing and fascinating place. There are so many aspects that go into forensic science but in this paper we are only covering bloodstain spatter patterns. Bloodstain spatter patterns are not solely used to solve crimes but I do feel it is one of the most important. Bloodstains never lie. A bullet is traveling at its fastest speed when it leaves the barrel of the gun. Bullets traveling after firing is said to be using kinetic energy. Kinetic energy is the energy the bullet has due to its motion from the firing pin striking the gun powder causing an explosion that forced the bullet to discharge from the barrel. Now this bullet possess kinetic energy and will do harm to anything lying within its targeted path. (Kinetic Energy website) The kinetic energy given to bullets fried from rifles will be a higher velocity then that of a pistol or shot gun. Rifles barrels are longer and constructed to with stand more pressure and thus leading to a greater velocity of kinetic energy on a bullet (Warlow 67). Death can occur from firing a bullet straight up in the air. When the bullet is returning to the earth due to the gravitational pull it will pick up velocity. However the bullet can return either base or head side up (89). Powders also have different burning rates for different guns. When you have a longer barrel your burning rate of powder will be longer but if your barrel is shorter then you will have a......

Words: 2889 - Pages: 12

Premium Essay

Analysis

...CHAPTER IX STRENGTHS, WEAKNESS, OPPORTUNITIES, AND THREATS ANALYSIS Strategic planning is a tool for organizing the present on the basis of the projections of the desired future. A strategic plan is a road map to lead an organization from where it is now to where it would like to be in five or ten years.It is necessary to have a strategic plan for your organization. In order to develop a comprehensive plan for your organization which would include both long- range and strategic elements.One of the most important parts of the strategic planning process is the examination of the internal and external environment of the business. The strengths or weaknesses of the business can be seen by considering its internal environment. On the other hand, the external environment factors of the business define the threats and opportunities it will face. Strengths, Weaknesses, Opportunities, and Threats analysis can be used for all sorts of decision making and proactive thinking rather than relying in habitual or instinctive reactions in the business. Specifically, SWOT analysis is basic straight-forward model that assesses what an organization can and cannot do as well as its potential opportunities and threats. SWOT analysis is essential in a business in accomplishing its objectives and what obstacles must be overcome or minimized to achieve the desired result. It is but inevitable for business enterprises to be faced with serious problems and be burdened with critical decision......

Words: 380 - Pages: 2

Free Essay

Bloodstain Pattern Analysis

...Bloodstain Pattern Analysis Bloodstain Pattern Analysis (BPA) is the examination of the shapes, locations, and distribution of patterns of bloodstains, in order to provide an interpretation of the physical events that gave rise to their origin. When BPA is done properly, many things can be discerned including distance from the blood source to the target, direction of travel and impact angles, nature of the force used to cause the bloodshed, sequencing of multiple bloodshed events, and interpretation of contact or transfer patterns. When it has been properly documented, BPA can also be used to confirm of refute the position of a victim, witness, suspect, or defendant, determine if there is evidence of a struggle, or if the assault was “one sided”, and confirm or refute statements made by the principles in a case, as in telling if the patterns match accounts given by victims, witnesses or defendants. Blood has specific characteristics that are exhibited in the way it behaves when separated from the blood source. Blood is always spherical in shape until it impacts a particular surface. This is due to the fact that blood naturally pulls in on itself, both horizontally and vertically, due to its specific surface tension. Spatters of blood occur when blood is acted upon by force and travels through the air before landing on a target surface. Transfers occur when a blood source comes in direct contact with the target surface area. Depending on the surface texture of the area,......

Words: 790 - Pages: 4

Premium Essay

Analysis

...1. EXECUTIVE SUMMARY Financial analysis is the starting point for making plans, before using any sophisticated forecasting and planning procedures. Understanding the past is a prerequisite for anticipating the future. Financial analysis is the process of identifying the financial strength and weakness of the firm by properly establishing relationship between the items of the balance sheet and the profit and loss account. Financial analysis can be undertaken by management of the firm, or by parties outside the firm, viz. owners, creditors, investors and others. The nature of analysis will differ depending on the purpose of the analyst. 1. Investors: Who invested their money in the firm’s shares, are most concerned about the firm’s earnings. They more confidence in those firm’s that show steady growth in earnings. As such, they concentrate on the analysis of the firm’s present and future profitability. They are also interested in the firm’s financial structure to that extent influence the firm’s earning ability and risk. 2. Trade creditors and financial institution: they are interested in firm’s ability to meet their claims over a very short period of time. Their analysis will, therefore, confine to the evolution of the firms liquidity position. And the financial institutions are interested in the financial statements of the borrowing concern to ascertain its short- term as well as long-term solvency and also it profitability. 3. Suppliers: On the other hand, are......

Words: 2052 - Pages: 9

Free Essay

Bloodstains

...Bloodstain pattern analysis are as the examination of shapes, locations and distribution patterns of bloodstains, in order to provide an interpretation of the physical events Bloodstain patterns can help investigators understand the actions and motions of the victim and the suspect throughout the crime scene. The patterns may indicate that a crime first thought of as a suicide was in fact a homicide. The analysis of bloodstain patterns is a complicated discipline and requires much experience with many different situations to learn to do an accurate reading. The bloodstain pattern analysis plays a very important role in the reconstruction of many crime scenes. The various types of bloodstains account for how the blood was projected from the body. Blood may be dripped out of the body, sprayed from an artery, oozed out through a large wound or flung off a weapon that has struck another person. Through bloodstain pattern analysis, analysts can determine, among other things, the type of injuries received, the order in which the injuries were received, whose blood is present at the scene, the types of weapons used in the crime, whether or not the victim was in motion at the time the injury was inflicted, and how far the blood droplets fell before hitting the surface upon which they were found. The shape of drops of blood can reveal all sorts of significant information. Some experienced analysts are even able to use some of the bloodstains to recreate the event. Three......

Words: 304 - Pages: 2

Premium Essay

Analysis

...Topic Gateway Series Strategic Analysis Tools Strategic Analysis Tools Topic Gateway Series No. 34 Prepared by Jim Downey and Technical Information Service 1 October 2007 Topic Gateway Series Strategic Analysis Tools About Topic Gateways Topic Gateways are intended as a refresher or introduction to topics of interest to CIMA members. They include a basic definition, a brief overview and a fuller explanation of practical application. Finally they signpost some further resources for detailed understanding and research. Topic Gateways are available electronically to CIMA Members only in the CPD Centre on the CIMA website, along with a number of electronic resources. About the Technical Information Service CIMA supports its members and students with its Technical Information Service (TIS) for their work and CPD needs. Our information specialists and accounting specialists work closely together to identify or create authoritative resources to help members resolve their work related information needs. Additionally, our accounting specialists can help CIMA members and students with the interpretation of guidance on financial reporting, financial management and performance management, as defined in the CIMA Official Terminology 2005 edition. CIMA members and students should sign into My CIMA to access these services and resources. The Chartered Institute of Management Accountants 26 Chapter Street London SW1P 4NP United Kingdom T. +44 (0)20 7663 5441 F.......

Words: 3971 - Pages: 16