服务承诺
资金托管
原创保证
实力保障
24小时客服
使命必达
51Due提供Essay,Paper,Report,Assignment等学科作业的代写与辅导,同时涵盖Personal Statement,转学申请等留学文书代写。
51Due将让你达成学业目标
51Due将让你达成学业目标
51Due将让你达成学业目标
51Due将让你达成学业目标私人订制你的未来职场 世界名企,高端行业岗位等 在新的起点上实现更高水平的发展
积累工作经验
多元化文化交流
专业实操技能
建立人际资源圈- · [更多范文]
Lasers 时间:2013-11-13
Lasers Light Amplification by Stimulated Emissions of Radiation By Jason Lasers are used more in our everyday life than we could ever imagine. They are used by the police as a way to monitor the speed of a vehicle, used for cutting in minor surgeries, or just used for you remote to your television to change the channel. There are many different kinds of lasers that have a large array
- · [更多范文]
Lung_Cancer 时间:2013-11-13
Lung Cancer Coughing may occur if the irritation is severe and cannot be cleared. This can be severe enough to crack rib and damage small blood vessels in the lungs. The second most common symptom occurring in about 1 in 5, is a chest infection. This is due to an inflammation of the lining over the lungs. A chest infection may cause chills, fever, night sweats, loss of appetite and w
- · [更多范文]
Lung_Cancer 时间:2013-11-13
Lung Cancer Lung Cancer I am doing my report on lung cancer so I can learn the effects, symptoms and preventions that I can take to avoid getting this disease. Cancer is a disease in which cells multiply without control, destroy healthy tissue, and endanger life. About 100 kinds of cancer attack human beings. Lung cancer is the leading cause of cancer deaths in the U
- · [更多范文]
Lesser_Pandas 时间:2013-11-13
Lesser Pandas In the wild, red pandas eat mostly bamboo leaves. They supplement this diet with berries, mushrooms, grasses and bark. Red pandas do eat some meat. They eat insects, bird eggs, bird nestlings, and may even catch an occasional mouse or bamboo rat. In zoos, wahs eat a specially formulated "panda biscuit" supplemented with cut fresh bamboo. The panda can grasp bamboo stalks wi
- · [更多范文]
Life_Without_Petroleum 时间:2013-11-13
Life Without Petroleum The world's petroleum supply has run out due to it's inefficient use by consumers. The nonrenewable resource that once made up almost all materials and products no longer exists. Petroleum was the source of petrochemicals. Petrochemicals include plastics, alcohol, medicines, sweeteners, perfumes, dyes, and explosives, just to name a few (ChemCom, 175). Alth
- · [更多范文]
Linus_Pauling 时间:2013-11-13
Linus Pauling "I wanted to understand the world!" replied Linus Pauling, a two-time Nobel laureate, when asked why he became a scientist. To him, the only way to understand the world was to understand the structures of the simplest molecules. This mind-set eventually led to the elucidation of chemical bonding, amino acid and protein structures, and the molecular basis of sickle-cell anem
- · [更多范文]
Linus_Pauling 时间:2013-11-13
Linus Pauling Linus Pauling Linus Pauling was one of the greatest, most influential chemists and activists of all time. He is the only individual to receive two unshared Nobel Prizes. He was recognized as one of the 20 greatest scientists of all time. Others included on the list were Galileo, Darwin, Newton and the only other person of the 19th century, Einstein. Linus Pauling ap
- · [更多范文]
Linus_Pauling 时间:2013-11-13
Linus Pauling "I wanted to understand the world!" replied Linus Pauling, a two-time Nobel laureate, when asked why he became a scientist. To him, the only way to understand the world was to understand the structures of the simplest molecules. This mind-set eventually led to the elucidation of chemical bonding, amino acid and protein structures, and the molecular basis of sickle-cell anem
- · [更多范文]
Liquid-Fuel_Rockets__Past,_Present,_Future 时间:2013-11-13
Liquid-Fuel Rockets Past, Present, Future Liquid Fueled rockets that are used today are inefficient and ineffective, therefore they will eventually have to be phased out. They are not very effective way to transport in space because they require there own supply of oxygen that is required for the propellant to burn. A rocket is essentially a chamber, from one end of which gases are e
- · [更多范文]
Love_And_Pheromones 时间:2013-11-13
Love And Pheromones They see each other from across the room and all of a sudden, it is as if an unbendable force has been inserted between them. They cannot be separated. They are in love and it only took about one millisecond to happen! We see this happen in many different novels and plays including Romeo and Juliet, Chaereas and Callirhoe, and An Ethiopian Story, as well as in all
- · [更多范文]
Memory 时间:2013-11-13
Memory Although we have long- term memory we still tend to forget things from the past. Here are some theories why people tend to forget and secondly, what do researchers suggest about the accuracy and permanence of long-term memory. One of the first scientists to experiment the theory of forgetting is a British psychologist named Sir Frederic Bartlett. Bartlett proved that people tend
- · [更多范文]
Louis_Pasteur 时间:2013-11-13
Louis Pasteur Pasteur served on the faculty of science of Dijon for a brief period and then was transferred to Strasbourg University where he continued his studies on molecular asymmetry. In Strasbourg, Pasteur had the immense good fortune to meet and marry the University Rector's daughter Marie Laurent, who was to be his devoted wife, mother and scientific helpmate through the remainder
- · [更多范文]
Lyme_DIsease 时间:2013-11-13
Lyme DIsease During the late 1970s, an outbreak of what was then called Lyme Arthritis in and around Lyme Connecticut, started the events that have become a nightmare for those stricken with it and has since spread from coast to coast. In 1981, Dr. Willy Burgdorfer and colleagues, managed to isolate the source as a corkscrew spirochete transferred to humans from ticks. They named
- · [更多范文]
Lysosomes__Hurlers_Disease 时间:2013-11-13
Lysosomes/ Hurlers Disease Hurlers disease could quite possibly be considered as one of the most dangerous types of lysosomal diseases because it is not really detectable until 6 and 24 months after birth. Once the disease is recognized though many times it is too late considering that the individual is already mentally retarded. Children that are affected by this disease have enlarge
- · [更多范文]
Adrenoleukodystrophy 时间:2013-11-13
Adrenoleukodystrophy Adrenoleukodystrophy Adrenoleukodystrophy is a genetic disease that is passed on from mother to son. ALD is an X-linked disorder. That means it affects only males and is transmitted by a female carrier. This disorder is called X-linked since the genetic abnormality involves the X-chromosome. Women have two X-chromosomes while men only have one. In women, the aff
- · [更多范文]
Advancements_in_Telecommunications 时间:2013-11-13
Advancements in Telecommunications Today, telecommunications technology affects lives to a greater degree than ever before. Communication has evolved over many years from the earliest attempts at verbal communication to the use of sophisticated technology to enhance the ability to communicate effectively with others. Every time a telephone call is made, a television is watched, or a pe
- · [更多范文]
Marie_Curie 时间:2013-11-13
Marie Curie Curie, Marie 1867 -- 1934 Physicist. Born Manya Sklodowska, on November 7, 1867 in Warsaw, the youngest of the five children of Wladislaw and Bronislava Boguska Sklodowska. Marie was a brilliant student, gaining a gold medal upon completing her secondary education in 1883. As girls could not attend universities in Russian-dominated Poland, Marie at her father's suggestio
- · [更多范文]
Aerobic_and_Anaerobic_Respiration_in_Yeast_Cells 时间:2013-11-13
Aerobic and Anaerobic Respiration in Yeast Cells The...Yeastiest way to produce energy' Dave Phillipich February 28, 2001 Dr. Krufka MWF 1:30-3:30 Lab Living organisms catabolize organic molecules within their cells and use the energy released to manufacture ATP by phosphorylating ADP. Many prokaryotes and virtually all Eukaryotes phosphorylate ADP either through fermentation
- · [更多范文]
Meat_Contamination 时间:2013-11-13
Meat Contamination Meat Contamination Meat is one of the most dangerous foods that a consumer can eat. Meat has thousands of microorganisms on it, and while most of them are harmless, it only takes one dangerous microorganism to kill a person. Bacteria can infect unprotected meat, once again leading to the illness or death of the consumer. Viruses can run rampant through meat, com
- · [更多范文]
Mining 时间:2013-11-13
Mining The importance of mining is definitely significant to Canada. Mining, is an important industry, and Canadians are very advanced in their mining technology, but during the mining process, there is certain level of pollution produced. The Canadian government and the mining companies have very good plans and controls toward this problem, while ensuring the smooth running of t
- · [更多范文]
Mitichondria_And_Chloroplasts 时间:2013-11-13
Mitichondria And Chloroplasts Mitochondria and Chloroplasts Mitochondria are found in nearly all eukaryotic cells. There may be only one, but usually there are hundreds to thousands per cell. The Mitochondria is like the powerhouse of the cell. It is directly correlated to the cells activity. It is approximately 1-10um (micrometer) long and 1um wide. They are often oval but can cha
- · [更多范文]
Moisture_&_Atmospheric_Stability 时间:2013-11-13
Moisture & Atmospheric Stability Moisture and Atmospheric Stability The stability of air in the atmosphere depends on the temperature of rising air relative to the temperature of the stationary surrounding air that it passes through, which varies from place to place and with changing atmospheric conditions. Air stability determines whether clouds form when air is uplifted, and the typ
- · [更多范文]
Momentum_Conservation 时间:2013-11-13
Momentum Conservation Abstract: In this experiment we analyzed the effects of causing collisions between two objects of equal and different masses. We found that different colliding circumstances cause different effects to happen. However, the one common thing about each collision was that the momentum of the system was conserved each time; this was the point of this experiment.
- · [更多范文]
Most_Dangerous_Species 时间:2013-11-13
Most Dangerous Species The Most Dangerous Species As long as humans have existed, we have posed a threat to our own environment. During Neolithic times, agriculture was born. This was just the beginning of the destruction of Earth. The Neolithic people would farm one area of land and then, once the soil was completely used up, they would move to a new area. Now we have evolved so m
- · [更多范文]
Nuclear_Fission 时间:2013-11-13
Nuclear Fission Nuclear Fission Nuclear energy the energy stored in the nucleus of an atom and released through fission, fusion, or radioactivity. In these processes a small amount of mass is converted to enormous amounts of energy according to the relationship E = mc2, where E is energy, m is mass, and c is the speed of light. Nuclear fission was first discovered in 1938 by two sci
- · [更多范文]
Mr_Darwin 时间:2013-11-13
Mr Darwin Charles Darwin Like many modern students, Charles Darwin exceeded only in subjects that intrigued him. Although his father was a physician, Darwin was uninterested in medicine and he was unable to stand the sight of surgery. He did eventually obtain a degree in theology from Cambridge University, although theology too was of minor interest to him. What Darwin real
- · [更多范文]
Muscular_Dystrophy 时间:2013-11-13
Muscular Dystrophy At least 1 in 3000 people is affected by a serious inherited neuromuscular disorder; muscular dystrophy makes up an appreciable amount of these. (Azofeifa,1995) Muscular Dystrophy is a heterogeneous group of inherited disorders characterized by progressive muscle wasting and weakness. There are six types of muscular dystrophy: Duchenne muscular dystrophy (DMD), Bec
- · [更多范文]
My_Left_Foot 时间:2013-11-13
My Left Foot Christy Brown was born in Rotunda Hospital, on June 5th, 1932. He was the victim of the Cerebral Palsy. Cerebral Palsy is disability caused by brain damage before or during birth, or in the early years of the baby, in result that the baby had loss voluntary muscular control. However, the exact cause is unknown, because some of the factors that might cause the disease are;
- · [更多范文]
Mystery_Of_Time 时间:2013-11-13
Mystery Of Time The Mystery of Time Ever since people have had the ability to question the world around them, one of the topics on their mind has always been What is time' Does time exist' Weve wondered if we can manipulate time. Are there multiple dimensions of time' Can we freeze or even move through time, witness past events, or look at the future' There has never been any
- · [更多范文]
Myths_And_Facts_On_Heart_Disease 时间:2013-11-13
Myths And Facts On Heart Disease Myths About Heart Disease MYTH # 1: Those medicines for cholesterol will mess up your liver. Don't take them! MYTH # 2: "I'll know when it's time to stop smoking . . . I'll do it when I start to cough or get short of breath." MYTH# 3: "My blood pressure (or cholesterol, or blood sugar) is running good on these pills, so I can stop them now.

