Science Essays
1,638 Science Essays: 1,351 - 1,380
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Synthèse De Polymères Dendronisés Par Polymérisation Anionique Vivante - Variation De Leur Caractère Hydrophile/hydrophobe Par Modification De Surface (french)
Les polymères dendronisés constituent une nouvelle classe de matériaux macromoléculaires. Ils sont constitués d'un squelette polymère où chaque unité de répétition porte une structure arborescente (dendron), comme schématisé ci-dessous. Mentionnés pour la première fois dans la littérature en 1990, ces matériaux ont fait l'objet d'un nombre limité de travaux. Selon
Rating:Essay Length: 411 Words / 2 PagesSubmitted: July 4, 2011 -
Synthesis of 2,4-Dnp: Nucleophilic Aromatic Substitution
Exercise 1: Synthesis of 2,4-DNP: Nucleophilic Aromatic Substitution (SnAr) INTRODUCTION Nucleophilic Aromatic Substitution involves two steps and it has a resonance-stabilized intermediate, called a Meisenheimer complex. This intermediate exhibits a negative charge that is resonance stabilized throughout the ring. Nucleophilic aromatic substitution involves the ring being attacked by a negatively
Rating:Essay Length: 2,189 Words / 9 PagesSubmitted: March 4, 2017 -
Synthesis of Banana Oil
Abstracts The purpose of this experiment was to synthesize banana oil which is also known as Isopentyl acetate using isopentyl alcohol and acetic acid; and also obtaining the pure product which was determined by their boiling, IR and NMR. In this experiment synthesis of banana oil, it is carried out
Rating:Essay Length: 465 Words / 2 PagesSubmitted: May 28, 2012 -
Synthesis of Isoamyl Acetate Using the Fischer Esterification Method
Synthesis of Isoamyl Acetate Using the Fischer Esterification Method Mark Jason Santos, Grace Sharmine Sotto, Chrio Sta. Ana, Lorenzo Terania* Department of Biological Sciences, College of Science University of Santo Tomas, España, Manila 1008 Abstract The objective of this experiment is to produce isoamyl acetate and to determine the yield
Rating:Essay Length: 1,322 Words / 6 PagesSubmitted: August 29, 2011 -
Synthesis of Trans-Benzalacetophenone
Chem 44.1 exer 5 Organic compounds with a carbonyl functional group, C=0, include aldehydes and ketones. Hydrogen or alkyl or aryl substituents can occupy the two left bonds on the carbon atom of this group. An aldehyde compound has at least one hydrogen substituents while a ketone has no hydrogen.
Rating:Essay Length: 592 Words / 3 PagesSubmitted: January 13, 2013 -
System Development Life Cycle
The system development life cycle (SDLC) is a way to plan and implement an information system in an organization. The SDLC has four major phases within this cycle, which are planning and analysis, design, implementation, and maintenance. The four phases identify the scope of the new system. The phases help
Rating:Essay Length: 768 Words / 4 PagesSubmitted: December 10, 2012 -
Tardigrades Case
Tardigrades more commonly known as "water bears" are the most desiccation and radiation tolerant animals known, this being so they are also the only known and recorded animal to ever survive a space vacuum and solar radiation combined. Bacteria and Lichens have also been known to survive these harsh conditions,
Rating:Essay Length: 852 Words / 4 PagesSubmitted: March 7, 2013 -
Tay-Sachs Disease: Good Genes Gone Bad
Running head: TAY-SACHS DISEASE: GOOD GENES GONE BAD Tay-Sachs Disease: Good Genes Gone Bad Daniel Perlmutter Blythe Academy Tay-Sachs is a relatively rare, but fatal genetic disease that is characterized by the progressive destruction of the neurons in the central nervous system. In its most common form, the disease affects
Rating:Essay Length: 1,625 Words / 7 PagesSubmitted: November 7, 2015 -
Team Work: Cultural and Personality Differences
Team Work: Cultural and Personality Differences The expansion into Mexico and Eastern Europe increased diversity in Lablog. As you stated, the impact of diversity is negatively affecting production among team members. My suggestion is to have a meeting including all team members and staff to discuss the changes, expectations and
Rating:Essay Length: 858 Words / 4 PagesSubmitted: January 6, 2012 -
Technical Communication Methods and Practices
Technical communication can be looked at in two ways: as the process of making and sharing information and ideas with others in the workplace, and as a set of applications. Technical communication is the process of finding and using information and sharing meaning. The brief conversations you have with your
Rating:Essay Length: 1,223 Words / 5 PagesSubmitted: May 16, 2011 -
Technology Case
Read Ch. 4, "Data and Knowledge Management," of Introduction to Information Systems: Supporting and Transforming Business. Read Technology Guide 3, "Protecting Your Information Assets," of Introduction to Information Systems: Supporting and Transforming Business. Read Ch. 3, "Managing Data to Improve Business Performance," of Information Technology for Management: Improving Performance in
Rating:Essay Length: 290 Words / 2 PagesSubmitted: November 16, 2011 -
Technology Curse or Blessing
Whether we like it or not, we're hooked on technology. Whereas not that many years ago, cell phones, laptops, desktops and tablets were more likely to be found in science fiction novels than in our homes, we've come to not only like technology, but rely on it. However, is all
Rating:Essay Length: 519 Words / 3 PagesSubmitted: January 24, 2013 -
Technology in the Renaissance and Early Modern Period
Technology in the Renaissance and Early Modern Period I. Science and Technology in the Renaissance - "rebirth"; interest in newly recovered classical texts - humanists - travel, adventure and navigation - increased use of military technology results requires lots of money: increased taxation, wealth - leads to formation of new
Rating:Essay Length: 2,544 Words / 11 PagesSubmitted: October 4, 2012 -
Technology, Good or Bad
Technology, Good or Bad Natural curiosity of man has developed the subject matter of science. The development and modernization of the world is due to scientific approach. Scientific technology has improved the work of cosmic exploration. It has modernized the whole world, even the countries of the third world in
Rating:Essay Length: 431 Words / 2 PagesSubmitted: October 5, 2011 -
Teen Drivers
Teen Drivers Name Course Institution Date Abstract Teen driving is one of the emerging issues across many states in the world. With the increase in the number of vehicle production, many teens are driving in most roads across the states. However, this has not come without consequences. Many teens are
Rating:Essay Length: 4,650 Words / 19 PagesSubmitted: December 3, 2013 -
Temperature and Enzyme Activity
Temperature and enzyme activity - Shobiga Peiris Aim: To investigate the effect of temperature on enzyme activity. Hypothesis: Enzyme activity is more effective at room temperature (37 degrees) Materials: * Seven test tubes ( one test tube is the controlled test tube) * Six beakers (used as water baths) *
Rating:Essay Length: 672 Words / 3 PagesSubmitted: November 1, 2012 -
Terrorism Is No Longer a Threat to the U.S.
Terrorism Is No Longer A Threat To The U.S. Since the 9/11 terrorist attacks, many experts claimed that it only proves the vulnerability of the United States to big and devastating terrorists attacks. This means that even the United States is considered as the most powerful country in the world
Rating:Essay Length: 1,801 Words / 8 PagesSubmitted: February 6, 2014 -
Tesla Green Energy
„To accelerate the world transmission to renewable energy“ This ist the missions statement of the company I want to introduce to you today. Tesla. First of all I am going to give you an overview of the company in general and tell you something about ist CEO Elon Musk. Afterwards
Rating:Essay Length: 648 Words / 3 PagesSubmitted: October 25, 2018 -
The "tragedy of the Commons" in Today's World
The "Tragedy of the Commons" In Today's World Our world has, in nature, provided us with a number of resources for a healthy living, but the main question remains as to how can we utilize those resources without depleting them? In 1968, an ecologist name Garret Hardin of the University
Rating:Essay Length: 1,478 Words / 6 PagesSubmitted: April 7, 2012 -
The Acceleration Due to Gravity
Objective: In this experiment we will determine that the displacement of a free falling body from the rest is directly related to the square of the falling time and that the acceleration due to gravity does not depend on the mass of the object. We will also determine the experimental
Rating:Essay Length: 1,485 Words / 6 PagesSubmitted: August 18, 2013 -
The Advantages of Cloning
THE ADVANTAGES OF CLONING The Advantages of Cloning Name College In 1997, scientists from Scotland cloned a sheep named Dolly, and the possibility of cloning became a reality to the world. Scientists see cloning as possible solutions to the following issues: infertility, organ transplantation, disease research treatment, genetic engineering to
Rating:Essay Length: 581 Words / 3 PagesSubmitted: November 26, 2016 -
The Age of the Earth
Summarize advances over time in determining the age of the Earth, including the importance of the discovery or radioactivity. * Scientists have settled on the age of the earth to be 4.5 to 4.6 billion years as a result of research started many years ago. This conclusion was based upon
Rating:Essay Length: 507 Words / 3 PagesSubmitted: February 13, 2013 -
The Aldol Condensation Reaction: Preparation of Benzalacetophenones
Image result for uitm logo AS202 Pure Chemistry CHM556 Organic Chemistry II Experiment 4 The Aldol Condensation Reaction: Preparation of Benzalacetophenones (Chalcone). Student’s name: ABDUL NIAT MODEN (2016644598) Partner’s name: MOHD FARIS BIN ABDUL RASHID Date: 16/11/2017 Submission date: 23/11/2017 Lecturer’s name: Madam Nur Vicky binti Bihud OBJECTIVES: Performing aldol
Rating:Essay Length: 1,267 Words / 6 PagesSubmitted: December 2, 2017 -
The Analysis of Event Attendance Rates
Introduction The analysis of event attendance rates can play a great role in improving the level of preparedness by counties and business for such events. There is a competitive advantage for event organizers and participants while the local authorities can also benefit by gaining significant insights on facility usage and
Rating:Essay Length: 383 Words / 2 PagesSubmitted: July 29, 2018 -
The Arctic Life - Global Warming
The global warming is affecting the earth's atmosphere and will continue affecting it over the next several years. As oceans water warms up, the glaciers in the Arctic will start to melt. The coastlands, cities and surrounding towns may get flooded if the glaciers keep melting over the next
Rating:Essay Length: 773 Words / 4 PagesSubmitted: April 4, 2011 -
The Beauty and the Beast
The Beauty and the Beast The wind suddenly picks up, and the trees begin to shake violently. A loud whistling noise suddenly screams throughout the air, piercing the ears of everyone who hears it. The city is evacuated except for the unfortunate few who could not escape what was coming.
Rating:Essay Length: 594 Words / 3 PagesSubmitted: October 12, 2011 -
The Big Thaw
The Big Thaw This article is about the melting ice sheets across the world. According to the author these ice sheets are melting because of human interactions in the environments and they are melting at a much quicker rate than previously predicted. Greenland's ice sheet is melting even quicker than
Rating:Essay Length: 610 Words / 3 PagesSubmitted: December 8, 2011 -
The Book "fahrenheit 451"
The book "Fahrenheit 451" is set in the 24th century where their world it is different from the one we live in today. This 'new world' is controlled by the media, censorship and overpopulation. The Television replaces family and the individuals are not acknowledged. The book fits the theme of
Rating:Essay Length: 436 Words / 2 PagesSubmitted: December 17, 2012 -
The California Endowment: A Parent Organization
The California Endowment: A Parent Organization Linda My Huynh Student ID Number: 49464640 Public Health 2 Dr. Zuzana Bic Spring 2015 Introduction In 1966, California’s not-for-profit Blue Cross of California insurance plan converted to a for-profit status, leaving at least 3 billion dollars in community assets to be re-invested –
Rating:Essay Length: 1,440 Words / 6 PagesSubmitted: July 4, 2015 -
The Case of Roberta Alden
Case study - The case of Roberta Alden The Aldens are an African American family from a remote rural area. It is highly likely that Mr and Mrs Alden are distant relatives. When they moved to England they had seven healthy children, 4 boys and 4 girls. Their eighth child
Rating:Essay Length: 254 Words / 2 PagesSubmitted: January 8, 2012