Acid Rain Essays (1865 words) - Inorganic Solvents, Acid Rain, Fish

Acid Rain INTRODUCTION: Acid rain is a great problem in our world. It causes fish and plants to die in our waters. As well it causes harm to our own race as well, because we eat these fish, drink this water and eat these plants. It is a problem that we must all face together and try to get rid of. However acid rain on it's own is not the biggest problem. It cause many other problems such as aluminum poisoning. Acid Rain is deadly. WHAT IS ACID RAIN? Acid rain is all the rain, snow, mist etc that falls from the sky onto our planet that contains an unnatural acidic. It is not to be confused with uncontaminated rain that falls, for that rain is naturally slightly acidic. It is caused by today's industry. When products are manufactured many chemicals are used to create it. However because of the difficulty and cost of properly disposing of these products they are often emitted into the atmosphere with little or no treatment. The term was first considered to be important about 20 years ago when scientists in Sweden and Norway first believed that acidic rain may be causing great ecological damage to the planet. The problem was that by the time that the scientist found the problem it was already very large. Detecting an acid lake is often quite difficult. A lake does not become acid over night. It happens over a period of many years, some times decades. The changes are usually to gradual for them to be noticed early. At the beginning of the 20th century most rivers/lakes like the river Tovdal in Norway had not yet begun to die. However by 1926 local inspectors were noticing that many of the lakes were beginning to show signs of death. Fish were found dead along the banks of many rivers. As the winters ice began to melt off more and more hundreds upon hundreds more dead fish (trout in particular) were being found. It was at this time that scientist began to search for the reason. As the scientists continued to work they found many piles of dead fish, up to 5000 in one pile, further up the river. Divers were sent in to examine the bottom of the rivers. What they found were many more dead fish. Many live and dead specimens were taken back to labs across Norway. When the live specimens were examined they were found to have very little sodium in their blood. This is typical a typical symptom of acid poisoning. The acid had entered the gills of the fish and poisoned them so that they were unable to extract salt from the water to maintain their bodies sodium levels. Many scientist said that this acid poising was due to the fact that it was just after the winter and that all the snow and ice was running down into the streams and lakes. They believed that the snow had been exposed to many natural phenomena that gave the snow it's high acid content. Other scientists were not sure that this theory was correct because at the time that the snow was added to the lakes and streams the Ph levels would change from around 5.2 to 4.6. They believed that such a high jump could not be attributed to natural causes. They believed that it was due to air pollution. They were right. Since the beginning of the Industrial revolution in England pollution had been affecting all the trees,soil and rivers in Europe and North America. However until recently the loses of fish was contained to the southern parts of Europe. Because of the constant onslaught of acid rain lakes and rivers began to lose their ability to counter act their affects. Much of the alkaline elements; such as calcium and limestone; in the soil had been washed away. It is these lakes that we must be worried about for they will soon become extinct. A fact that may please fishermen is that in lakes/rivers they tend to catch older and larger fish. This may please them in the short run however they will soon have to change lakes for the fish supply will die quickly in these lakes. The problem is that acid causes difficulties the fish's reproductive system. Often fish born in acid lakes do not survive for they are born with birth defects such as twisted and deformed spinal columns. This is a sign that they are unable to extract enough calcium from the water to

Discrimination Against Women in Songs essays

Discrimination Against Women in Songs essays Women are still stereotyped today and often portrayed as helpless victims. Our songs represent gender stereotypically as the American White Male keeps the humankind safe from democracy as women are degraded to a second class. The stereotyping of women is seen in several areas of the media, in the lyrics to our popular songs and in our movies. Our children have become so exposed to songs and their lyrics that degrade women that many young adolescents think the song, I am a Barbie Girl is just a song sung by the Ken doll as a reflection of what Barbies plastic world is all about. But I have a hard time tolerating some of the sexist issues. That actually goes along with the image of Barbie in this song. This song suggests that blondes can not think for themselves. Therefore Barbie must do things like beg on her knees to get her male partners attention. The song states to young children that, you, as the owner of Barbie, can make her perform. You can undress her anywhere, you can brush her hair, and you can even run your fingers through her blonde hair. These words send a powerful double meaning to young girls listening to this song. Young girls get the image that they too can be a, Barbie Girl and live in this Plastic World. Barbie sings of life as your creation; therefore, life is what you make of it. But Barbies life is what the owner of the doll makes of it. Barbie sings about herself as being a girl in a fantasy world. In the song, she tells her owner to, dress me up make it tight, I am your dolly tonight. The song sings of all the things the owner of this dolly can do with the doll. This also suggests what a young girl can do to catch her mans eye. But actually what this song is teaching young women is to let someone else lead you, you can not think on your own, and this is because you are a woman and as a women remember you have no personal rights. This ...

Legal Environment of Business2 Essay Example | Topics and Well Written Essays - 250 words

Legal Environment of Business2 - Essay Example Laws relating to equal pay are violated. However, the employer may take advantage of the provisions of Equal Pay Act to justify his action. These provisions allow for varied compensation if the employees are of different productivity under the same working conditions. Nesser is likely to win the case against the Airline. This is because, the Airline’s refusal for Nesser to work from home shows that the Airline only needs his services when he is perfect health condition. Employment laws do not allow this kind of treatment when employees fall ill in their line of duty. Failure to include all the required information was a breach of the requirements that govern securities. The experienced scenario resulted from the actions of the outside entities and thus security laws were violated, specifically contract law. However, the outside entities have a defense since what unfolded was not intentional. Pearl cannot require the bank to make good on the check since it has already been identified that Sharpe’s account does not have sufficient funds. The bank can only make good out of the transaction if Sharpe makes the substantial deposit she had promised to make. Franklin is entitled to the credit as he demands. This is because, he expressed his concern to have payments ceased on an issued check. The cashier notified the other tellers about Franklin’s directive. If no attention was paid by the teller who made the payment, it is the teller and the bank that are liable to the mistake and not

You can decide the topic whatever you want by those requirements I Essay

You can decide the topic whatever you want by those requirements I pasted - Essay Example Hanna is a police detective who is highly interested in bringing the criminal activities of De Niro and his group to an end. In the quest to complete his mission, Hanna faces several difficulties as well as issues in the family. On the other hand, De Niro if quite successful in his endeavors but admits of the feeling of loneliness. The two individuals are obsessed with their carriers and encounter loneliness in different instances, in the movie. This research introduces the film by reviewing it general storyline. Crime has incorporation in the film. The work of the detective is clearly stated and the hurdles to face in the search for fight crime in Los Angeles. The research tries to bring out the effects of work ethics and the way commitments affect different people in their line of duty. This research reviews the film ‘Heat’ focusing mainly on the elements of filming and they have been put together to bring out best quality views that concur with the film’s theme. The report analyses camera movements and it is of use to compliment other elements in the movie. The sound quality and perfect inclusion in the film have a clear analysis in the research paper’s body. The research also analyses Cinematography as used in the film, ‘Heat’ how the cinematographer was able to present real life experiences of different characters in the film. This has accomplishment by looking into the film’s main theme and how the cinematographer was able t o presents this theme to attract the attention n of public. The research reviews how the producer was able to combine the professionalism of the crew including the actors, writers, cinematographers, directors and the engineering team to produce such quality work. The research paper concludes by giving the setbacks of combining drama and crime in the film eliminating it from thriller category. The conclusion

CIS 206 U1 Discussion Essay Example | Topics and Well Written Essays - 250 words

CIS 206 U1 Discussion - Essay Example Ubuntu is a fork of Debian, that is on of the oldest Linux distributions available and is sponsored by Canonical. The features to look at in comparing the Linux distribution are stability, performance, software availability and installation, user interface and update support and release schedule. Fedora and Ubuntu are both stronger than Arch Linux. Ubuntu users have reported more application crashes that Fedora users. The reason behind this is the high number of third party applications in Ubuntu. Therefore, Fedora is more stable than Ubuntu and Arch Linux. Fedora, Ubuntu and Arch Linux are very fast Linux distributions. Fedora has a high I/O performance than Ubuntu but on the other hand Ubuntu starts up quickly. From some test by OpenBenchmarking.org fedora 20 outperforms Ubuntu 13.10 when working with large number of files as in a business setting. Fedora scored 279.22 files/second as compared to 184.10/second files in Ubuntu. Performance in graphical applications was almost similar in Fedora and Ubuntu of around 31.4 frames/second. Therefore, fedora outscores Ubuntu in performance. Hardware support in Linux is still a bigger problem than other commercial distributions like Windows and OS X. In Linux, Ubuntu has a better hardware compatibility than both arch and fedora, and different drivers will quickly work in it. Ubuntu outperforms both fedora and arch in software availability. Ubuntu has a lot of developers working on their applications, and it also supports personal package archives. Fedora has a large library of applications but not as extensive as Ubuntu. Fedora uses a package manager called yum and rpm; Ubuntu uses apt-get and Deb while Arch Linux uses a package manager called Pacman. Arch Linux outperforms both Fedora and Ubuntu in building customized multimedia production workstation. Arch also has a user repository hundreds of user supported packages. All the distributions have constant updates and full

Comparison of Techniques in Acne Scar Treatment

Comparison of Techniques in Acne Scar Treatment Punch excision techniques are utilized for depressed scars such as ice pick and boxcar scars. According to the diameter of the scar, a biopsy punch of appropriate size is used to excise the scar. If the scar is > 3.5 mm in size, it is excised and sutured after undermining, in a direction parallel to the relaxed skin tension lines. Procedure: Surgical preparation is done. Local anaesthesia infiltration and marking of the scar is done. Initial undermining of the scar is done. Based on the diameter of the scar, a biopsy punch of appropriate size is inserted till the subcutaneous fat layer and the punch graft is removed and discarded. After removal of the plug, the area becomes elliptical. Undermining with an artery forceps is done and is followed by suturing with 6-0 prolene. (Illustration 33.5) A linear scar ensues lying along the RSTL. Dressing is done. Antibiotics and NSAIDs are administered for 7 days. Depressed pitted ice pick scars up to 4 mm in diameter, are excised and replaced with an autologous, full-thickness punch graft. The donor site is commonly the post-auricular region or the gluteal region. Care should be taken to avoid cobblestoning, which is a common complication. Procedure: Surgical preparation is done. Local anaesthesia infiltration and marking of the scar is done. Initial undermining of the scar is done. Based on the diameter of the scar, a biopsy punch of appropriate size is inserted till the subcutaneous fat layer and the punch graft is removed and discarded. From the donor site, a full thickness punch graft> 0.5 mm than the excised scar is taken. This is then fit into the recipient area( Area of excised scar), if needed it is trimmed. Sutures or surgical glue is applied. (Illustration 33.6) Dressing is done. Antibiotics and NSAIDs are administered for 7 days. All the punch techniques require a postoperative follow up after 1 week to check for the donor/ recipient site and removal of sutures, if required. In selected cases, when scarring is linear and extensive, scar revision techniques such as Z, M and Y plasty may be useful. These need to be performed by a dermatosurgeon properly trained in performing these procedures. [41, 42] Various techniques such as microneedling, threadlifts are being used in atrophic acne scars. Intralesional steroids and cytotoxics along with silicone sheets are the mainstay for hypertrophic scars. Skin needling, also called â€Å"collagen induction therapy† or â€Å"needle dermabrasion† is the technique of rolling a device composed of a barrel studded with hundreds of needles, which create thousands of micropunctures in the skin to the level of the papillary to mid-dermis. [ 43] The optimal scars to treat with skin lesion are the same as fractional laser resurfacing— rolling acne scars, superficial boxcar scars, or erythematous or hypopigmented macular scars. A dermaroller device is used with needles of length 1.5 to 2.5mm is rolled across the skin with pressure in multiple directions until the area demonstrates uniform pinpoint bleeding through thousands of micropuncture sites. One study describes rolling the device four times in four different directions (horizontally, vertically, and diagonally right and left) for a total of 16 passes. [44] In the author’s experience, the number of passes required to achieve uniform pinpoint bleeding of the treat ment area is variable and is inversely proportional to the density of the needles on the rolling barrel. Usually, three or more treatments are required to achieve optimal clinical benefit, separated by four-week intervals. Figure 33.6 shows good results with dermaroller microneedling. Microneedling with fractional radiofrequency (MFR) technology is now being used for acne scars. MFR is useful for distensible scars and non- distensible scars with associated volume loss. The procedural details and clinical studies have been detailed in Chapter 10. Non-surgical face lifts with threads are also being used for acne scar treatment. Polydioxanone (PDO) threads are used for lifting and tissue tightening and scar resurfacing; it stimulates production of collagen and fibroblasts in response to its implantation. Threadlift with PDO is indicated in patients of scars who cannot come repeatedly for multiple number of sittings for derma roller, or do not want to undergo laser/ lights or radiofrequency treatments. Evidence based studies are lacking with this technique. The procedure has been detailed in chapter 15. Intralesional triamcinolone 10-40 mg/mL with or without cytotoxics, like 5-fluorouracil, is indicated for the treatment of hypertrophic scars and keloids. These are repeated at 3-4 weekly intervals until resolution; care is taken to avoid atrophy. [45, 46, 47, 48] Administration of fluorouracil (5-FU) or bleomycin into the scars, results in gradual flattening of the scars. [49, 50, 51] 5-FU inhibits rapidly proliferating fibroblasts found in dermal wounds. [52]The therapy is efficacious for facial acne scars as monotherapy, [53, 54] and in combination with intralesional corticosteroids and a 585 nm pulsed dye laser. [50 ] Studies with 5-FU use a concentration of 50 mg/mL with a total dose per session ranging from 50 mg to 150 mg and can be given multiple times a week to increase treatment efficacy. Bleomycin is another antineoplastic agent that inhibits collagen synthesis through cytotoxic effects on rapidly dividing fibroblasts. [55, 56] Silicone dressings are chemically and biologically inert; silicon sheets or gels are found to be useful in flattening keloids and hypertrophic scars, reducing discoloration and making scars cosmetically acceptable. [57, 58] Scarring in areas which are subjected to repeated movements (chin, marionette lines) are prone to become more obvious with aging. The synergistic combination of botulinum toxin and fillers may prove to be a useful modality in these scars. Botulinum toxin relaxes the muscles and hence decreases the tensile forces surrounding the scar. [20] Combining 2 or 3 modalities of acne scar treatment in a single session or sequential planning of the procedure can prove advantageous to a monotherapy. Various combination therapies are practiced. Combination of different interventions can result in satisfactory improvement of acne scarring. It is useful to combine subcision with various modalities. Subscision treatments followed by microneedling performed immediately the day after and TCA 15% peel done a fortnight later was found to improve the grade of scar. [59] Another sequential combination therapy is TCA peeling, subcision, and subsequent fractional laser irradiation. Dot peeling and subcision is done twice at an interval of 2-3 weeks and fractional laser irradiation is done every 3-4 weeks. The duration of therapy is 12 months. A marked decrease in acne scar severity was noted. [60] Combination of PRP with microneedling, fractional CO2 and erbium YAG also constitutes an effective alternative that produces synergistic benefits with fewer adverse effects. [61, 62, 63] The aim of good postoperative care is to prevent or minimize complications and ensure early recovery. Preventive actions must be taken promptly to avert complications, which may lead to unacceptable aesthetic or functional result. This is most important in ablative resurfacing procedures, particularly in darker skinned patients, where pigmentary alterations are common. Supportive medical therapy and a careful maintenance program are essential to maintain results of surgical treatment in most patients. Complications related to individual procedures are discussed in details in respective chapters. In general, the complications include conditions such as active herpes simplex, immunosuppressive conditions, which may predispose to infection and delayed healing. Post inflammatory hyperpigmentation is a common and dreaded complication of acne surgery, especially in dark skinned patients. Patients with unrealistic expectations or uncooperative patients who do not follow treatment regimens are more prone to develop complications. Adequate counselling, priming the skin and supportive medical therapy, apart from good intra- and postoperative care are essential for satisfactory surgical outcomes. The tips for management based on the author’s experience are outlined in Box 33.4 Box 33.4: Pearls and Pitfalls Procedural treatment in acne provides gratifying results. These are an adjunct treatment in active acne, however post acne scarring is being better managed with the advent of various procedural interventions. Fractional resurfacing lasers have proven to be one of the most beneficial technologies for post acne scarring. Judicious use of combination therapies in a single or sequential sessions have a synergistic role and are increasingly being used in clinical practice. Appropriate patient selection and a good understanding of patient expectations are vital to achieve an optimal therapeutic outcome. Acne surgery involves the use of appropriate surgical interventions for treatment of active acne as well as improving cosmetic outcomes in postacne scarring. In active acne, surgical intervention is used as an adjunctive to medical therapy. The treatment of post acne scars involves a multimodal approach as different types of scars may exist in an individual. Each scar and each patient must be evaluated and treated accordingly. The main goal of treatment is to achieve maximal improvement rather than perfection. The procedures can be classified as resurfacing, lifting, excisional modalities.For superficial scars, non-invasive or minimally invasive techniques such as microdermabrasion, superficial chemical peels or the newer non ablative lasers, are better treatment options. For deeper scars, a combined approach with subcision, punch excision techniques in conjunction with resurfacing procedures, are essential to achieve optimum results. Many complications can be prevented by thorough p reoperative evaluation, sound surgical technique, and careful follow-up care. Good patient rapport and effective communication with patients are invaluable.

Music Listening Report :: essays research papers

When I sat down to do a Listening report last night, I started thinking, "Who am I kidding?". I am never going to push myself to listen to 15 Jazz CD’s in a week and a half, so I am going to do the remainder of my listening reports on music that I like to listen to. You may think it defeats the purpose of listening reports, but that’s not true. What these guys play may sound like heavily distorted noise, and too much yelling played at way too high of volumes to the average adult, and honestly, it is. But there is music, and every day 1000’s of kids are trying to teach themselves their favorite headliners, and that’s how we learn to play our instruments in the first place. So, now that I’ve convinced you WHY I am doing this listening report, here is the actual thing: The song (the only one by this group) on the CD is New Skin by Incubus which is really cool, because to most people it sounds a lot like rap, but to me it is a really fast-paced alternative music song because of the actual instrument playing (not featured in the basic drum tracks of rap music) and the repeated chorus, which sounds really cool because the bassist and lead vocals play and sing on a perfect 4th. The second group on the tour is Orgy. Their biggest headliner is Blue Monday, which is a really kickass remake of the David Bowie Original. Its about some guy who hated Mondays, so he went out and shot a bunch people, mostly kids I think, at some convention WAY back in the day. Then David Bowie wrote a song about it, and it was under a lot of heat. But now, Orgy made the song HUGE. It is an amazing song. Orgy has a very unique sound. They are sort of an Electro-Punk band. They have some really hardcore guitar riffs, but they also got some sweet Synth tracks and stuff like that. The best thing about them, though, has got to be their Vocal Distortions. They got this cool echo-y noise added to their voice. Orgy also performs Dissention and Gender. The next group is Limp Bizkit. These guys co-starred the tour, and performed such songs as Faith, you’ve probably heard people singing this song. Its another remake, I have no idea who wrote the original or why, but it’s a cool song, "Wouldn’t it be nice, If I could touch your body . . . ." That’s the opening of the song. They also redid an old House of Pain song, "Jump Around".