Climate Change And The Disaster Environmental Sciences Essay

Climate Change And The Disaster Environmental Sciences Essay Climate change and the disaster of the environment have driven the planet in a crucial state. Although it is irreversible, countries all over the world have entered a route of mitigating this disaster. In this essay we are going to talk about how Hamburg, one of the largest cities in Europe and one of the largest and busiest ports worldwide, have managed to solve in a big percentage, regardless of its big population, issues, among others, like reduction of CO2 emissions and management of waste disposal and recirculation. We are also going to see one environmental issue that hasnt been solved yet and we are going to explore the various impacts of this as well as what Hamburg is planning to do about it in the future.2 The city of Hamburg and the importance of its port The Free and Hanseatic City of Hamburg is a city state and the second largest city in Germany with 1,7 million of inhabitants. It is a cultural and a commercial center for Northern Germany, its metropolitan region consisting of approximately 4 million people. Hamburg municipal area is equal to 755,3 km2 and embraces 14 districts around the City of Hamburg.(HPA,2011) It is the third biggest industrial area In Germany after Ruhr and Berlin, with business related to aircraft and ship building industry, automotive industry and mineral oil processing. However the highest importance is the industry that is related to the harbor and all its activities. The port of Hamburg is the largest port in Germany, the third largest port in Europe and one of the ten largest ports worldwide. Only the port by itself employs around 75,000 people and more than 133,000 jobs are directly or indirectly related to the port due to its high importance as it is one of the most important trading centers in Northern Europe. As for this reason Hamburg sustainability has become very topical as environmental protection has turned into a major factor for business decisions. 3 Environmental issues solved 3.1 Reduction of CO2 emissions Hamburg has gone too far investigating and researching new methods of contributing in the mitigation of climate change. One major issue that has been solved at a considerable percentage is the reduction of CO2 emissions. The efforts are great considering the scale of energy demand, the citys population and the ports traffic. The government itself has gone into an ECO-partnership with the commercial sector, encouraging companies to go beyond statutory requirements regarding CO2 emissions. As for the port, Hamburg has established the Automated container taxis which in fact eliminates the transportation of containers via trucks and instead containers are transported from one terminal to the other, through long distance railway. (New European Economy, 2012) In the city, again Hamburg gives the example, having many cleaner means of transportation for short and long ranges. Not only the worlds biggest fleet of hydrogen-fuelled buses, but also an exclusive bicycle network exists in the city, with additional bike lanes and cycle-hire schemes. (European Union, 2011) Last but not least Hamburg has in many places around the city heating plants which provide district heating. This system produces and provides heating to some districts using, as basic energy consumption renewable energy such as solar energy, wind energy and biomass, combined with fossil fuels. All these have a huge impact on the environment and people because it has a considerable reduction in CO2 emissions, great noise reduction, less need for fossil fuel consumption, so that means, a healthier and greener way of life. 3.2 Waste water management Sustainable waste water management has been a top priority is Hamburg for more than a decade. Mainly the Public Sewage Company HSE but also other organizations have invested a considerable amount of money so that Hamburg will reach a satisfactory percentage of prevention of waste water to go to lakes and waterways. The key issues that were achieved were the storage of waste water in tanks, the treatment of waste water, which actually is the dehydration of the waste water, the separation of ammonia in the waste water (de nitrification) and the energy production from the separated sludge. Especially in the energy production from the sludge, HSE has done a great job, equipping all the treatment plants with a new chain process which exploits energy resulting from the treated sludge. So as a result of this sewage gases are transformed to electric energy, further decreasing CO2 emissions that stated before. (European Union, 2011) C:UsersPanosDocumentsenviromental engineering Sources2012_04_26_Abb Konzept mit Garrest_eng_skaliert.jpg Also there is a concept to come into force from the HWC company in the near future that will be a great innovation. According to that concept every residence will be able to manage, treat, and recycle the waste water disposal and also convert it to energy. All of the above have as a result the creation of a better environment for the flora and fauna in the lakes and waterways, the recycling of the evaporated water which comes in terms of rain and the increase in the oxygen expulsion. 4 Issue that has not been yet solved Since there isnt any city, state or country in the world that has solved all the environmental problems, same goes for Hamburg that has one critical environmental problem that troubles scientists and researchers for long time now and that goes with river Elbe. Due to Hamburgs location and topography there is a need for dredging of accumulating sediments. Since 1990s, it was decided that the deepening of river Elbe was a critical matter since it was found that the sediments were highly contaminated and they needed to be treated before they could go into disposal. 4.1 River Elbe River Elbe is the third largest river in Central Europe after Danube and Rhine and in terms of length it covers a distance of 1091 km (727 km in Germany, 364 km in Czech Republic). Its catchment area goes through Prague, Dresden, Berlin and Hamburg. Especially around the city of Hamburg, where the port of Hamburg is allocated, river Elbe is influenced by the tide. 4.2 Environmental problems on River Elbe As we mentioned before river Elbe is influenced by the tide. This has as a result to have several sediments staying at the bottom of the river, and following that, the level of the seabed of the river is rising through time. In order to sustain the trade of the harbor by having free passage to ships, as well as keeping the harbor fully operational, the depth of river Elbe and thus the depth of navigation needed to be assured. Constant dredging was the answer to the problem to achieve that depth. At the beginning of the idea, the sediments that were dredged from river Elbe were used again for agriculture. However it was found that the dredged sentiments were contaminated with heavy metals (As, Cd, Hg, Zn) and organic contaminants (PCB, Dioxins, PAHs) which had great negative impacts to the environment (Heise, 2005). This pollution was a result of upstream industrial activities in the former GDR (German Democratic Republic) and Czech Republic such as pharmaceutical, chemicals from mini ng, pulp and paper, and leather-processing industries (Netzband et al., 2002). Until 2000 there were some measures that were taken in order to reduce this contamination, such as the treatment of the dredged sediments. This system was aparted from two sections. The first section was the pre-treatment which was the separation of the sediments into sand and contaminated silt fraction, and the main treatment was the dewatering process followed by the environmentally safe disposal of the silt. Both treatments were carried out by one large scale plant named METHA (Netzband, 2002). Since 2000 the sediments have been increasing 3 to 4 million m3 per year (HPA, 2005b). This is of great importance to Hamburg and its environment because from one point the sediments have to be dredged more quickly, due to the current needs of the harbor area and from another point the capacity of METHA has already been exceeded. As it is understandable the continuously dredging of river Elbe destroys its morphological environment, and from at the part of the pollutants we already have a decrease in oxygen, combined with the existence of contaminants we have a progressive destruction of the environment. Especially the summer time the oxygen depletion of river Elbe is great which results in a large number of fish kills. 4.3 Possible solutions Although the dredging of river Elbe is an issue that troubles researchers for over two decades, the impacts are not irreversible. Since the reason for deepening river Elbe is solely financial, it is suggested by the Federal Ministry for the Environment, that a second port should be opened as a deep water port, located at Wilhelmshaven and acting as a hub (HA, 2004a). This is one of the best ideas if it will be financially supported, so that the need of 24 hour navigation on river Elbe, regardless of the tide, will be eliminated as well as the need for dredging. Apart from that, the European WFD (Water Framework Directive) implements new quality standards for chemicals used in agriculture.

Importance of Computer Essay

Science is one of the greatest blessings in modern life. Scientific advancement has led to many important inventions. One of them is the computer. About a decade back, a computer was seen as a wonder machine. A few years later, this wonderful machine came closer to us as the Personal Computer (PC) entered the household scene. The computer today plays a significant role in our everybody’s life. Computers are used practically everywhere. The use of computer in our country in the past two decades has taken a big jump. Today computers do much more than simply compute, super market scanners calculate our grocery bill while keeping store inventory; computerised telephone switching centres play traffic cop to millions of calls and keep lines of communications untangled, and Automatic Teller Machines (ATM) let us conduct banking transactions from virtually anywhere in the world. The extensive use of computers in all fields of business has improved efficiency of the industry and the economy of the country. Computers have the capacity to do extremely complicated work in all branches of learning. Computers can be effectively used in solving the most difficult and complex mathematical problems. The other use of computers can be in compilation of information. Thus there will be a saving of time in research works. Computers can provide information to prevent traffic accidents. They can do such works which make the worker dull to repeat a process hundred times or more. Automation of work through computer will save the time and energy of human life. Thus human beings will get more leisure than they have today. Computer is the result of human mind exercises. It is a machine. It can help in any physical action. It can be used in progressing a physical work. It cannot think independently. We have to feed it before taking any mental work. We can find the answers based and limited to feeding material. First, we have to feed for a particular field to find some answers related to that field, we cannot find an answer from a vacuum because there is no ndependent feeling and thinking to answer without any base. Computers will never be able to replace man as they need detailed instructions from man and can never lead independent lives. In the Armed Forces computers are being widely used for collecting complex data for the aircrafts, missile and guns. The radar system is controlled with complex computers to give early warnings of coming enemy unit. Computers are also being widely used in mass communication and medical science. Today the police have started storing data on crimes and criminals on computers. Computers now have become a need of the day, in modern life. They are being used in every field of work. Due to importance of computer, its knowledge has been thought an essential qualification for a job. No doubt computers are capable of doing everything, but it is falling short of thinking. This is still only reserved form of man. So here computers are only machines; it cannot compete with man though they have overcome him in many ways

Essay on Social Aspect of Substance Abuse - 1001 Words

Addiction is a difficult disease that involves several different factors including biological, psychological and sociological aspects. Anderson (1997) states that substance use refers generally to the ingestion of illicit drugs such as marijuana, cocaine, opiates, barbiturates, benzodiazepines, PCP, amphetamines, etc. The use of illicit drugs, such as alcohol and nicotine, are less frequently included in this definition, despite their widespread use and undisputed potential for harm. Substance abuse, however, is a more value-laden term which implies substance use, probably over time, which is somehow detrimental or harmful. Thus, substance use need not constitute substance abuse, although they often coexist. Wormer, Davis (2010) indicates†¦show more content†¦This can be used as the stepping stone to better understanding the undertaking that the counselor will have to overcome. The social aspect is critical for a number of reasons. One reason is that as the foundation of the disability rights and independent living movement, the individual control has become a major issue. People with alcohol and drug addictions know their situations best and given the proper resources can make the best decisions about they need. The individual control, however, has been compromised in those situations in which people cannot make the best decision for themselves. In these cases, parents, and relatives have to step in and assume the responsibility. In some situations a medical or clinician has to assume the responsibility concerning the needs to the individual with the alcohol and drug addictions. The client has to understand that enabling is inherent part of alcohol and drug addictions. The family members that are constantly enabling the client are causing severe problems also. 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Bullying and School Violence Essay - 701 Words

The article title states exactly what the article talks about, the many different cases of bullying and violence in schools. The title tells you exactly what to expect from the abstract but does not give away any information on what it includes. The author did a good job deciding on the title because although it is simple, it grabs your attention, it certainly did mine. Bullying is a very common happening among young children so the title having the word bully in it, draws your attention. It could have been a little more creative but I do like the title and feel that it is both effective and appropriate. The purpose of the study is evident and can clearly and easily be derived from the title of the article. The author, Dawn†¦show more content†¦The everyday bullying that goes on in schools all over the country. Pennington, with the help of some of her colleagues describes different theories and reasons why violence occurs in schools. Dennis Murphy feels that it is parentsâ⠂¬â„¢ false sense of security that allows violence to perpetuate. Most parents have the feeling of â€Å"not my kids, not at their school†. Jill Riethmayer feels that it is children’s inability to deal with their problems and the lack of friendly adult figures to confide in. Pennington, however, feels that children just need someone to talk to about being bullied and that the bullies are just misunderstood and are probably abused themselves and duplicate what they know. She writes very factually and gets straight to the point of what she is talking about and is rather effective at doing so. Pennington is a savvy researcher. She used some of her own research as well as the research of others who have studied the topic. Her methods are appropriate and they do offer some explanation for the problem. By her using the Columbine incident, she manages to paint a very vivid picture of in-school violence. 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Statistically schools students have a one in seven chance of being on the receiving end of a bullies rage (NBNBD). In the United States, there is an estimated 160,000 children miss school every day due to fear of attack or intimidation by other students (NEA), but what are the contributing factors in school violence? What and why do bullies to want to inflict pain on someone? We need to find the