Allelopathy Paper Essay Example for Free

Allelopathy Paper Essay Introduction: Considering the beneficial properties of plants, not only to us, but the environment as well, it is important to understand the nature of Allelopathy and how it affects plant ecology. According to the Topics in Biology Laboratory Manuel, allelopathy refers to â€Å"the beneficial or harmful effects of one plant on another plant, by the release of chemicals from plant parts in both natural and agricultural systems. † By secretion of biochemical materials, allelopathy involves a plant’s ability to inhibit germination or growth of the surrounding germination. In our exercise, we tested for the presence of allelopathic chemicals in plant shoots and the effect of the allelopathic chemicals (our I. V. ) on the germination and growth (our D. V. ) on radish seeds. The question proposed became, â€Å"Does Rose seed extract affect the germination and growth of radish seeds? † Keeping the allelopathic effects in mind, our working hypothesis became, â€Å"If radish seeds get exposed to the rose leaf extract, then their percent successful germination and the average length will be less than the percent successful germination and the average length of the radish seeds which do not get exposed to the Rose leaf extract. Materials: For week 1 and week 2 the following materials were used: 10 grams of fresh leaves (rose), sandwich-type plastic bag, a scale, a blender, 100 mL of distilled water, folded cheesecloth, a funnel, one stock bottle, 3 pieces of filter paper, two Petri dishes, and 40 radish seeds. Methods: According to the Topics in Biolo gy Laboratory Manuel, the experiment was conducted as follows: First we needed to collect fresh leaves from one plant species, and fill up a plastic sandwich bag, which we were to bring with us to the lab. Next in groups we were to weigh 10 grams of leaves from the one plant species and place the measured sample in a blender. Next we added the 100 mL of distilled water to the blender. Holding the lid of the blender, we blended the mixture completely. Then we placed some folded cheesecloth into a funnel and sat it into a stock bottle. Finally we poured the blended mixture through the funnel/cheesecloth to filter the solution. To test the Allelopathic effects, we then needed to place 3 pieces of filter paper in each of the bottoms of the two Petri dishes. In one Petri dish (labeled with the leaf extract) we added 10 mL of the filtered solution, so that it soaked the filter paper layers. In the second Petri dish (labeled control), we added 10 mL of distilled water so that the water soaked the filter paper layers as well. Next in each of the Petri dished we added 20 radish seeds on top of the 3 pieces of filter paper, evenly spaced. Then we placed another piece of filter paper on top of the seeds in both dishes. Finally, we placed the lids on top of both Petri dishes to prevent excessive evaporation and stored them at room temperature, giving them a week to germinate, then be evaluated. Results: For our results, after careful observations and measurements, the percentages of successful germination were as follows: For the Experimental group, that is the group treated with extract, had a 70% success rate in which 14 of the 20 radish seeds had sprouts. However, the Control group, which had been treated with distilled water, had an 85% of successful germination in which 17 of the 20 seeds had sprouted. When comparing the seedlings length, the experimental group recorded 3. 0 mm being the shortest, and 13. 0 mm being the longest, making 4. mm the average length of the seedlings, all which is indicated on the following two pages by bar graph representations on average seed length and percentage rates of both groups. When looking at the control group, however, the shortest length measured was 12. 0 mm and the longest was 62. 0 mm, making their average 42. 0 mm. When observing each of the radish seed’s conditions, it was obvious that the control group produced healt hier, more vibrant seedlings with an extended root system and hair. However the experimental group contained more so dry, yellowish seeds with little to no root hair. Discussion: When observing the results of the Allelopathy experiment, it is evident that the results reflect and indeed support my hypothesis which stated that, â€Å"If radish seeds get exposed to the rose leaf extract, then their percent successful germination and the average length will be less than the percent successful germination and the average length of the radish seeds which do not get exposed to the Rose leaf extract. † So again when comparing the average length of seedlings between the control group and the experimental group, there really is no comparison; the experimental group had a mere 4. mm length verses that of the control group which had a remarkable 42. 0 mm length. Although noted both had a high percentage rate of germination, it really comes down to Allelopathy and the competitive â€Å"chemical warfare,† present in our experimental group. As for leaving room for error, a number of problems could have taken place, such as if small amounts of water needed to be added to re-saturate the filter paper, or if fungus appeared due to the high temperatures, etc. Over all I believe the experiment did a good job of explaining and demonstrating the Allelopathic effects on plant economy.

mafia Essay -- essays research papers

Their guns terrorized the streets of New York. They were murderous, brutal thugs that killed with no feelings of remorse. They were bank-robbers, drug dealers, casino owners, hit men and pimps. They were the Mafia of the 1920's and 1930's. These degenerates played an important role in American history, they were more than just bank-robbers and gunslingers, and they were men that affected all facets of society. They were celebrities, some of the most recognized men in America. Their evil deeds made the front page of every newspaper. They were some of the richest men in America, but most of all; they were the scapegoats for America's problems. They were hated by many, respected by few and feared by all. In times of poverty and despair, they were looked upon as the "problem", which needed to be "fixed". The fear they imposed on America gave Americans something to unite over and fight against together. Sometimes, a person is most courageous when they are most fearful. They made America "roar" in the twenties and they took "the wrath" of thirties. They were some of America's most dangerous men and some of its most famous as well. In order to obtain an objective view towards the Mafia, one must know a little about its history. The Mafia was first started in the ninth century, in Sicily. At this time, Arab forces were occupying Sicily. The natives were being oppressed, so they took refuge in the surrounding hills and formed a secret society to protect against the foreign invaders. This secret society was named Mafia, after the Arabic word for refuge. The society's intentions were to create a sense of family, based on ancestry and Sicilian heritage. During the 1700's, Mafia leaders began to force their way to the head positions in the Sicilian government and used government funds for their own private endeavours. In the early 1900's, when Mussolini and the Fascists came to power, he vowed to rid the country of all the Mafia. Keeping this in mind, and the fact that there was money to be made through extortion, prostitution, gambling and bootlegging in the United States, many Mafioso's decided to come west to America. Charles "Lucky" Luciano, the eventual organizer of the New York Mafia, was born in Sicily in 1897, and came to New York. Luciano climbed the "criminal ladder" and by 1935, he was known ... ...titution was so profitable, because it offered the most easily marketable and vendible product in the world; sex. The Mafia used the prostitutes as tools to make more business. They placed their "girls" throughout their clubs, so they could lure some high roller in the back for a drink or two. They worked the bars, and listened to lonely middle class men who needed a shoulder to cry on. They were on the streets mingling with the crowd, looking for their next perverted customer. The bosses often used prostitutes to "sweeten" deal between rival leaders or crooked politicians. They were as dangerous as the trained killers were, because they possessed something more powerful than guns. They were just as ruthless as the men that put holes in people's heads; they only came in a nicer package. The Mafia men of the 1920's and 1930's were some of the most influential men in American history. They robbed banks, killed people, stole, cheated, lied and corrupted an already corrupt country. They were not role models, and they did not aspire to be. They were businessmen, men who had only two objectives, money and power. They saw a need for something and they produced it.

Haidilao Touchpoint Essay

Haidilao is an emerging restaurant brand in China. I like it because it brings me delightful dining experience. When I am waiting for a table in the restaurant, the waiters will bring me some free food, and it also offers free nail art service for women and free shoeshine service for men. When I am ordering dishes, the waiter will even remind me how much food is enough for how many people. So every time I go there, I feel respected and delighted. Touch points: 1. Service and price: Haidilao is famous for its high-end service and ordinary price. In essence, it applies the excellent customer service in hotel industry to a hot pot restaurant. When customers are waiting for a table, it offers tea, food, nail art and shoeshine service for free. When customers sit down, the waiters will bring some hair bands, aprons, phone shells, hot towel and so on. There are even cosmetics and hand cream in the bathroom. Although most people won’t use the cosmetics, it still shows how considerate the company is. Many people call this abnormal service because it lets people fully feel the customer is God. 2. Food: Haidilao offers authentic Sichuan hot pot. The dishes are clean, fresh, and customers can even order half of a dish. They can also make their own sauce with the ingredients offered by Haidilao. 3. Employee: The waiters are very passionate. They always wear a smile on their face. They care about customers from the bottom of their heart. As I just mentioned, when you order too many dishes, they will remind you. 4. Culture: The culture of the Haidilao company is people-oriented and customer first. Many companies only think about how to satisfy their customers while neglect how to satisfy their employees. However, Haidilao cares about its employees very much. Although its workforce is mostly composed of young employees born in underdeveloped suburban areas, the CEO treats them like family members. Therefore, they are enthused and motivated to deliver extraordinary service to customers creatively. 5. Word of mouth: Haidilao is a hot topic in China. Many people post their experience in Haidilao online and there are many bewildering stories you can’t imagine, which makes people who haven’t been there more curious about it. 6. Media: Haidilao doesn’t do any advertising, but many media report the story of Haidilao because of the founder’s unique entrepreneurial values and compares it with Foxconn, which also increases its popularity.

The Battle Of The Punic Wars - 1506 Words

Joel Medero History Western Civilization Professor Smail THE PUNIC WARS During the 3rd and 2nd centuries B.C., three wars were fought between Rome and Carthage. The name given to describe the wars Punic, is a divided word from the Latin and Greek words for Phoenician. The city of Carthage, situated in what is now Tunisia in North Africa, was founded in 814 B.C. by the Phoenicians. The first two wars were the longest 23 years and 17 years, separated by an interval of 23 years. The last and third war lasted only three years. It started 52 years after the end of the second Punic War. All three wars were won by Rome, which automatically emerged as the greatest military power in the Mediterranean Sea. The hostility of Carthage impelled Rome to build up its large army and create a strong navy just like the one Carthage had. Strong military leaders of the war for Carthage and his sons Hasdrubal and Hannibal. Rome’s outstanding leaders were Scipio Africanus. Belief holds that Phoenician settlers from the Mediterranean port of Tyre discovered the city-stat e of Carthage on the northern coast of Africa. By 265 B.C., Carthage was the richest and the most advanced city in the region, as well as its prominent naval power. Through Carthage had clashed forcefully with several other powers in the region, notably Greece, its relations with Rome were historically friendly, and its cities had signed several treaties defining trading rights over the years. By 275 B.C. Rome had broughtShow MoreRelatedThe Battle Of The Punic Wars2439 Words   |  10 PagesThe Punic Wars, a century-long conflict between Rome and Carthage started in 264 B.C. and continued until 146 B.C. when Carthage gets destroyed. Carthage, a Phoenician colony, came to be a superpower of the Mediterranean and posed a threat to the Romans. The First Punic War focuses on gaining control over the islands of Sicily and Corsica. The two powerful countries entered into a dispute between the Sicilian cities of Messana and Syracuse and established their presence on the island. Neither s uperpowerRead MoreThe Battle Of The Punic Wars3659 Words   |  15 PagesIntroduction The Punic Wars were a defining moment in the expansion of the Roman Republic, with the Second Punic War (218 – 201 BC (Grant, 1960)) playing the part of a corner stone in the bridge to create the powerful Roman Empire. Moreover, this was the first time that Rome had expanded into territories outside of Italy which was pivotal in the development of the Roman Republic, and furthermore the Rome Empire, as it marks the beginning of an imperial Roman power (Rickard, 2001). Accordingly, this war has capturedRead MoreThe Battle Of The Second Punic War2071 Words   |  9 PagesCarthage and the Roman Republic fought the second Punic War for control of the lands bordering the Mediterranean Sea, considered the entire civilized world at the time. The battles of the second Punic War show Hannibal Barca to be not only the greatest military leader of his age, but perhaps one of the greatest generals of all time. By examining one of Hannibal’s most spectacular victories, the paradigm for a battle of annihilation, military professionals can learn how the Roman commanders mightRead MoreThe Punic Wars973 Words   |  4 PagesThe Punic Wars were made of three major wars. The last war was kind of a punishment for Carthage from Rome. The two powers in these wars were Rome and Carthage. Rome was controlling the main peninsula of Italy while Carthage was controlling the islands and trade of the Mediterranean. Rome and Carthage were once on a friendly term until things went south well. The Punic Wars have major historical content that involve both leaders on opposite side as well as the battles among the two city-states. TheseRead MoreHannibal And The First Punic War1406 Words   |  6 Pagesthe First Punic War (264–241 BC) to conquer much of Iberia. Hannibal grew up in military service, and following the 221 BC assassination of his brother-in-law Hasdrubal, who had replaced Hamilcar, Hannibal took charge of the Carthaginian army. He soon proved a brilliant fiel d commander who applied his intellect and martial skills to the singular end of winning battles. Hannibal, a sworn enemy of all things Roman, declared war against them and this was the start of the Second Punic War (218–201 BC)Read MoreThe Ancient Roman Civilization1316 Words   |  5 Pagesencountered many wars and battles, they didn’t win all of their battles; however, they’ve learned through their failures to improve upon the progress of their society. In 264 BC to 146 BC the Romans were involved in a prolonged war with the Carthaginians, known as the Punic War. (Chris Scarre, 24-25) The word Punic comes from the Latin derivation of the word Punicus which translates to Carthaginian, referring to the Carthaginian’s Phoenician ancestors. (Keith Sidwell, 16) The Punic war was broken intoRead MoreEssay on the Punic Wars650 Words   |  3 PagesThere were three Punic or Carthaginian Wars is Roman history. These were between 264 and 146 BC. These wars were the first great wars of Roman expansion outside Italy. The enemy of Rome had a large empire that stretched along the coast of North America and southern Spain and some parts of Sicily. This empire was known as Carthage. The purpose of these wars was to decide which power would become the dominant force around the Mediterranean Sea. The first Punic War lasted from 264-241 BC. It wasRead MoreThe Battle Between Carthage And Rome1728 Words   |  7 PagesThe three Punic Wars was a series of battles fought between Carthage and Rome that lasted almost a century from 264 BC to 149 BC. As Carthage had the leading power of Western Mediterranean and Rome’s control over the peninsula of Italy. However, both of the two states had different intensions over the island of Sicily leading to the battles of the Punic Wars that soon later ended in a total defeat for Carthage. With the desire of controlling the island of Sicily, Carthage would still have the dominanceRead MoreEssay about Punic Wars929 Words   |  4 Pages Discuss the Roman Punic Wars, in terms of their circumstances and overall effect on Rome’s economic and social development Also discuss the ensuing â€Å"Gracchan turbulence† from the same perspective. The circumstance for the Roman Punic Wars towards Rome was a simple human reaction. If an outsider such as Italy, Carthage, or Greece make threats towards Rome, Rome will simply fight. The Punic Wars lasted in 3 stages, all resulting to the obsessive pride and higher standings of Rome. Rome’s initialRead MoreAncient Carthage Vs. Rome1320 Words   |  6 PagesCà ¡rthage. I would argue that while Rome was ultimately the greater military power, Cà ¡rthage from a geopolitical and commercial viewpoint was equally, if not more successful than Rome in the same period of time leading up to the start of the first Punic war (264 BCE). Origins The cities of Cà ¡rthage and Rome were founded within one hundred years of each other. Jona Lendering suggests that carbon dating conducted in the 1990s, traces the founding of Cà ¡rthage to the last quarter of ninth century BCE (2015)