Learn What pH Stands For and How the Term Originated

Learn What pH Stands For and How the Term Originated Have you ever wondered what pH stands for or where the term originated? Here is the answer to the question and a look at the history of the pH scale. Key Takeaways: Origin of pH Term pH stands for power of hydrogen.The H is capitalized because it is the hydrogen element symbol.pH is a measure of how acidic or basic an aqueous solution is. It is calculated as the negative logarithm of hydrogen ion concentration. pH Definition and Origin pH is the negative log of hydrogen ion concentration in a water-based solution. The term pH was first described by Danish biochemist Sà ¸ren Peter Lauritz Sà ¸rensen in 1909. pH is an abbreviation for power of hydrogen where p is short for the German word for power, potenz and H is the element symbol for hydrogen. The H is capitalized because it is standard to capitalize element symbols. The abbreviation also works in French, with pouvoir hydrogen translating as the power of hydrogen. Logarithmic Scale The pH scale is a logarithmic scale that usually runs from 1 to 14. Each whole pH value below 7 (the pH of pure water) is ten times more acidic than the higher value and each whole pH value above 7 is ten times less acidic than the one below it. For example, a pH of 3 is ten times more acidic than a pH of 4 and 100 times (10 times 10) more acidic than a pH value of 5. So, a strong acid may have a pH of 1-2, while a strong base may have a pH of 13-14. A pH near 7 is considered to be neutral. Equation for pH pH is the logarithm of the hydrogen ion concentration of an aqueous (water-based) solution: pH -log[H] log is the base 10 logarithm and [H] is hydrogen ion concentration in the units moles per liter Its important to keep in mind a solution must be aqueous to have a pH. You cannot, for example, calculation pH of vegetable oil or pure ethanol. What Is the pH of Stomach Acid? | Can You Have Negative pH? Sources Bates, Roger G.  (1973). Determination of pH: Theory and Practice. Wiley.Covington, A. K.; Bates, R. G.; Durst, R. A. (1985). Definitions of pH scales, standard reference values, measurement of pH, and related terminology (PDF). Pure Appl. Chem. 57 (3): 531–542. doi:10.1351/pac198557030531

Analysis & Estimation of Travel Demand Assignment

Analysis & Estimation of Travel Demand - Assignment Example The questions provides a practical basis for collecting the required information for analysis and estimation of the travel demand. Large volumes of information could also be collected from many respondents within the targeted transportation companies in the city. This is typically possible within a relatively short time period. Because no much movement is required when trying to reach the respondents, the survey as a whole is very cost effective. With this survey instrument, the aspects of validity and reliability of the collected data is preserved. The research results can easily and quickly be quantified. Nevertheless, the survey instrument is disadvantageous in that to a certain extent, it is inadequate in understanding certain forms of information that is completely implied such as behaviour, emotions, and feelings with regard to the posed questions. To some extent, the data collected may not be valid enough especially where estimates are considered for answers. There is also the possibility of the respondents interpreting the questions different. Trip generation is basically the fundamental step in the process of initiating transportation forecasting. In this regard, there is the need to acquire all the necessary information that could ultimately lead to an effective travel demand forecasting. Trip generation would help the authorities of the City of Omaha predict number of that could be destined for the city’s traffic analysis zone. In order to achieve the objective of the trip generation step, the questionnaire focuses on residences through the companies offering the transport services. In this case, the first thing considered in designing the questions was the key aspects required in trip generation. The questions were then structured with respect to the variables required for the analysis. The companies involved were some of the key

Popular Culture Media The Production of Popular Culture ( See Essay

Popular Culture Media The Production of Popular Culture ( See questionsessay thesis below) - Essay Example Retro presents history as an essential entity presented in a historical way giving historical references while reviving associated trends acts in conditions that comes under the conditions of discontinuity, rupture, and multiplicity. The boost in consumerism through retro vision and philosophy is because of the synchronous understanding that the retro would present the past as inspiration and bringing back the realities of life in a reflection. Though there is nothing like historic or authentic but is powerful enough to present the whole as a fusion of old and new. The aspects that are selected from the past are only positive. This position is not too concerned with the diversity within retro but looks at the various manifestations separately. The extreme swinging of retro of the present would led to the emergence of for instance from 1950s ladylike style with its prim to pretty look in the mid-1990s would help in bein

The effects of invasive species on recreational fishing Research Paper

The effects of invasive species on recreational fishing - Research Paper Example First is that the species show very high rate of reproduction. The plant species that are invasive have a much higher rate of reproduction than any other species, which raises the second reason why they are so (Coulatti 138). Second is that the species fall prey to little or no predation at all. This fact gives the species leeway to reproduce and not worry about any form of predation. Thirdly, the invasive species are mostly hardy in nature. Being hardy means that the species can thrive in virtually any kind of environment, including different climates and habitats (Coulatti 140). The impact that invasive species cause on the environment are gross and sometimes irreversible (Verling 272). Destruction of landscape and severe loss of habitats and loss of life by both animals and humans are just but a few of the impacts. The effects the invasive organisms have on the environment include negative impact on bio-diversity, they can cause species extinction, soil erosion and land degradation and change in life cycles of organisms (Verling 273). The weeds found in lakes and rivers, for example the water hyacinth could cause destruction to water bio diversity. First, the weeds in the water destroy all other plant organisms in the water in order to establish their roots some of them even feed on other organisms. This ensures that the weeds remain the apex plant organisms on these water sources thus getting rid of any chance of bio-diversity in the water sources (Callaway 265). Second is the cause of species extinction in water sources (Coullatti 57). In order to fish, it is logical that there be something to catch in the water sources. The invasive species make sure that fishing does not happen. They do this by first, as mentioned above, eating up all the plant life in the water and thus rendering the fish without food. This the main reason for fish extinction. Land and soil

Hassan and Amir Essay Example for Free

Hassan and Amir Essay The texts in section A focus on cosmetic surgery on teenagers. Write a paper (700-1000 words) in which you answer the following questions. Answer the questions separately. 1. Give an outline of the various views on plastic surgery for teenagers, which are presented in texts 1 and 2 2. How dies Valerie Ulene engage the reader in the subject in text 1? Illustrate your answer with examples from the text. 3. Taking your starting point in text 3, discuss whether cosmetic surgery on teenagers should be banned. 1. Both given texts, â€Å"Plastic surgery for teens† by Valerie Ulene and â€Å"Seeking Self-Esteem. Through Surgery† by Camille Sweeny, have very similar views on plastic surgery for teenagers in America. They both hold the view that teenagers are pressured by set beauty standards, which are displayed by media and other industries. In the first text â€Å"Plastic surgery for teens† Valerie Ulene, the author and a specialist for preventive surgery in the US, says that America’s teenagers feel the need to undergo plastic surgery because they think of the beauty standards as the given norm and want to achieve those norms. Ulene is of the opinion that plastic surgery shouldn’t be the alternative to diets and exercise, because most teens are very impatient and change their opinions quickly, so they might regret their choice shortly after. She believes teens will obtain a better view on themselves, as they grow older and go through the process of growing up. It’s not entirely unwise to get a plastic surgery, according to Valerie Ulene, she thinks some teenagers, who have had the wish for a long time, should have the opportunity, but preferably when they are legally aloud to sign consent, until then parents and doctors should determine whether or not the teen should turn to a surgeon’s knife. The second text â€Å"Seeking Self-Esteem Through Surgery† by Camille Sweeny, the author is of the fairly same opinion as given in the first text. Sweeny also believes that the growing figures of teenage plastic surgery emanate from unreachable beauty standards. She quotes critics who think that the growing number of plastic surgery, especially among adolescent girls, stems from the fact, adolescents have low self esteem and because plastic surgery has become easy to access. Sweeny also thinks a lot of teenagers are unaware of the long-term effects, like pain Elena Haig 2C English or follow-up surgeries. She feels it is important to challenge the given standards and preach different ones, also it is important to accept one’s own appearance. 2. Valerie Ulene engages the reader by telling about herself and how she â€Å"disliked [her] nose as a teenager would be an understatement† (l. 1), this way the reader feels like she is honest and respectable. Furthermore she uses pronouns like â€Å"I† (l. 2, l. 3) to make clear that she states her own opinion. Ulene also makes use of modern terms like â€Å"getting it â€Å"done†Ã¢â‚¬ (l.3) and â€Å"fixed† (l. 62) and by doing that she seems closer to the teenagers, whom she wants to reach. Ulene appeals to logos and persuades the audience by reason, an example of this is â€Å"The American Society of Plastic Surgeons estimates that more than 330,000 adolescents (†¦)† (l. 6) where she uses data from a respected American institution and thus the reader trusts her and her opinion and she seems credible. Expressive adjectives like â€Å"ridiculous† (l. 17) or â€Å"tremendous† (l. 60) underline her statement on plastic surgery or beauty standards. Later on in the text she makes use of pathos to appeal to the readers’ emotions and convince them to believe in her argument by creating an emotional response. â€Å"With a 14-year-old daughter of my own, I recognize how difficult that [saying no to plastic surgery] can be. While I’d like to think that I’d dissuade – if not forbid – her from having cosmetic work done†. (ll. 58-59) With this quote the reader empathizes with Ulene, because it’s now a lot more understandable why she’s against plastic surgery on teenagers, and in the next paragraph she uses another example from her life where she diminishes the wish for plastic surgery by saying â€Å"as far as my own nose goes, I’ve never really grown to love it. I have grown used to it, however, and have no regrets that it was never fixed† (ll. 61-62). 3. â€Å"If they aren’t old enough to sign their own surgical consent for a medically necessary procedure, then they shouldn’t be able to induce their parents to do it for cosmetic surgery which is a personal, subjective, value-based decision, not a decision of medical necessity. † Dr. Pete Costantino According to this quote, the ban of cosmetic surgery for teenagers is a good idea. The topic of plastic and cosmetic surgery has been open for a lot of debate. The question whether it should Elena Haig 2C English be banned or not bears more than one problem and can be viewed from different sides. The main question is though, where a medically necessary procedure ends and becomes cosmetic surgery? On the one hand, there is the problem of the promoted unreachable beauty norms, which teenagers are exposed to everyday. These norms make some teenagers believe that their features are ugly or an abnormality, but they are mostly completely normal. A general ban of cosmetic surgery could help them rethink the view on their bodies. Also, a lot of teenagers are very impatient, and if they don’t have access to these kinds of surgeries, they are forced to wait and maybe they’ll rethink their decision. In contrast to this, some teenagers are so unbearably unhappy with their features that they don’t go to school, don’t interact socially or are confronted with bullying from their classmates. If cosmetic surgery is prohibited for citizens under 18 years, they don’t have any chance of improvement in their lives. Often, parents have very different morals and convictions than adolescents, and wouldn’t understand their child’s struggle, and in the long run the adolescent is the one who has to live with the given facial or physical features. All in all, I am only partly for a general ban of plastic surgery for minors. I think there should be a certification that the person undergoing plastic surgery is completely aware of the consequences the procedure will have and that this person has considered positive and negative effects of this decision. What I don’t agree with is that the government decides what distinguishes necessary medical surgery from cosmetic surgery. It’s not always visible if the person needs this surgery or not, there are often mental problems linked to the choice that is made. Words: 963 (without quote) Elena Haig 2C English 1) Later on in the text she makes use of In diesem Satz war ein Kongruenzfehler, denn in der 3. P singular â€Å"she† muss dem Verb ein â€Å"s† hinzugefugt werden. 2) By doing that she seems closer to the teenagers, whom she wants to reach. Hier muss â€Å"whom† verwendet werden, da es sich auf das Praposition â€Å"to† bezieht. 3) Nachstes mal werde ich in meiner Outline darauf achten, keine bis wenig Fluchtigkeitsfehler zu machen, um meine Sprache zu verbessern. Auch die grammatischen Strukturen mochte ich mehr beachten, so dass sie komplexer, vielfaltiger und korrekt sind. Auch von dem Inhalt her mochte ich versuchen ein wenig mehr auf Standpunkte einzugehen die ich eventuell nicht als wichtig empfinde. Um den Text leichter lesbar zu machen, versuche ich alle dargestellten Haltungen klarzustellen und genau zu erlautern. Beim zitieren versuche ich nachstes mal noch mehr auf das Integrieren in den Text zu achten, damit er flie? ender zu lesen wird. View as multi-pages Topics in this document Surgery, Plastic surgery, Reconstructive surgery, Microsurgery, Adolescence, Hand surgery, Hospital Related Documents Plastic Surgery Essay An Ugly Trend Plastic surgery is defined as repair, restoration, or improvement of lost, injured or defective body parts. It can also be used as a synonym for â€Å"fake† or â€Å"superficial. † Although the meaning of plastic surgery fluctuates between different people, the origin of the word â€Å"plastic† comes from the Greek â€Å"plastikos,† meaning able to be molded. † Throughout history, society values beauty. Individual’s pursuit in 1267 Words | 6 Pages Plastic Surgery Essay. PLASTIC SURGERY Plastic surgery is a special type of surgery that greatly improves not just your appearance, it improves self esteem and health at the same time it gives you a better quality of life. The name â€Å"Plastic surgery† which includes the word plastic doesnt mean patients who have this surgery end up with a face full of fake stuff. The name isnt taken 1267 Words | 3 Pages Essay on Teenage Girls and Plastic Surgery Mr. Archer English 11 AP 1 April 2011 Underage Girls Going Under the Knife Should teenage girls under the age of eighteen be allowed to undergo plastic surgery? According to recent statistics, rhinoplasty was performed on nearly 35,000 patients between the ages of thirteen and nineteen in 2009. The procedure accounted for nearly fifty percent of all cosmetic surgical procedures performed on this age group. If all cosmetic procedures like chemical peels, 1267 Words | 5 Pages Plastic Surgery Superficial or Necessary? Essay Plastic surgery is a very necessary form of surgery. It is needed by millions of Americans every year, not only to improve life, but in some cases, to save it. There are two types of plastic surgery: cosmetic and reconstructive. Cosmetic surgery consists of certain procedures used to â€Å"improve† a person’s natural features, or give a more youthful appearance, while reconstructive surgery is used to 1267 Words | 7 Pages Essay about rationale of plastic surgery ? The Rationale of Plastic Surgery Plastic surgery is a controversial issue among the society now. For some people, there is not agreed about undergo plastic surgery because they are grateful and appreciative with their natural beauty appearance what god gave to them and for Muslim’s religion does not give Muslim’s change appearance have been given by Allah. Every countries now has a 1267 Words | 5 Pages Plastic Surgery Beauty or Beast? Essay Swan 2, she morphed into a beauty queen after a slew of plastic surgery proceduresa brow lift, lower eye lift, mid-face lift, fat transfer to her lips and cheek folds, laser treatments for aging skin, tummy tuck, breast lift, liposuction of her inner thighs and dental procedures. The Fox show gives contestants plastic surgery and then has them compete in a beauty pageant, which last year Stiles won. The Swan and other such 1267 Words | 5 Pages. Essay about Plastic Surgery Cosmetic surgery is very common these days it is no longer only accessible to rich and famous. Any person in the world can have the procedure they want done, most people think cosmetic surgery is unsafe but it is only unsafe if your surgeon is not qualified. Here are the 5 top reasons why most people get cosmetic surgery. 1. Health Reasons. Some people may have gone through rough times caused by sickness or massive weight loss, so its only 1267 Words | 5 Pages Should Teenagers Be Discouraged from Doing Plastic Surgery? Essay. doing plastic surgery? What is plastic surgery? Plastic surgery is ‘the process of reconstructing or repairing parts of the body by the transfer of tissue, either in the treatment of injury or for cosmetic reasons’ (Oxford Dictionaries, 2010). Sushrutha from India, who is known as the ‘Father of Plastic Surgery’, had carried out plastic surgery a 1267 Words | 5 Pages Cite This Document APA (2015, 04). plastic surgery outline.

Conscience Essays -- essays research papers

Conscience Webster's Seventh New Collegiate Dictionary defines conscience as "the sense or consciousness of the moral goodness or blameworthiness of one's own conduct, intentions, or character together with a feeling of obligation to do right or good." In A Man for All Seasons, each character's conscience plays the ultimate role in the outcome of the story. "Individual conscience" is trait that each character possesses. This trait differs in intensity throughout the play in each of the main characters. Sir Thomas More and King Henry VIII show their unchangeable conscience, by their actions. More refuses to accept the King's divorce of Catherine, and marriage to Anne. The King appoints More to Lord Chancellor, hoping to persuade Sir Thomas to accept his marriage. King Henry wants everyone to accept his divorce. He believes he is right for going against Pope's ruling, and he wants all his royal subjects, and men of popularity to accept his decision. This is the King's "individual conscience" talking . He fears that without the acceptance from Thomas, Lord Chancellor, that he has made God angry, and he will pay for his unsupported decision. Sir Thomas More was the only character that believed and stuck with his conscience, by doing so, it cost him his life. Sir Thomas was a very prominent member of the King's council, he was the only member whom did not take bribes to sway his decision. Sir Thomas had always trusted ...

The Last Holy Book

Quran is the last Holy book of Allah revealed upon His last Prophet Muhammad (PBUH). Surah Al-Fatiha means â€Å"The Opening† as it is the first chapter of Holy Quran. It contains seven verses which are a prayer for the guidance, lordship and mercy of Allah. The meaning of the entire Quran is summarized in this Surah. It has its different names indicating it as a special blessing of Allah. Surah Al-Fatiha is one those chapters of Quran which holds great importance as Allah (SWT) said in the words given below:†And, Indeed, We have bestowed upon thee seven of the often repeated (verses), and this sublime Quran.†Surah Al-Fatiha is very important as one has to start with it when he begins his prayer. Reciting Surah Al-Fatiha five times a day shows the nature of its greatness as a chapter as well as a Dua so that we can be benefitted. In any situation a person may be, be it a difficulty, an illness or a state of suffering or any other problems a person may face in his life Surah al-Fatiha is the cure of all the sufferings. This Surah is a prayer to your Lord for seeking guidance and mercy so that He showers His blessings upon us.Virtues of Surah Al-FatihaThere are many virtues of Surah Al-Fatiha. Starting with the first virtue, it is the greatest chapter in the Quran. It mainly covers the topics discussed in Quran. Another virtue is that as it is recited five times a day during prayers so it is a pillar of prayer. Prophet Muhammad (PBUH) said:†Whoever does not recite Surah Al-Fatiha in his prayer, his prayer is invalid.†This Surah is contains the cure for the diseases as a companion once recited Surah Al-Fatiha to a person who got bit by a Scorpio and he was cured. It is not just a cure for diseases but it is also a cure for the heart from the evil. It is a light to direct us towards the righteous path. As it has so many virtues it is known as the Mother of Quran.b)Tafseer of Surah Al-Fatiha1. In the name of Allah, the Beneficent, and the Most Merciful†In the name of Allah, the Beneficent, and the Most Merciful† is the first ayah of this Surah. This is also known as Bismillah which is good to recite before doing anything so that we are showered with the blessings of Allah Almighty.The letter BaaThe letter Baa can have three different meanings. First is with/ in the name of Allah. The second is seeking help of the name of Allah and the last seeking blessings with the name of Allah.Al-Rehman and Al-Raheem Al-Rehman and Al-Raheem are the names of Allah which mean mercy. They are derived from the words raa, haa, meem and their meaning is mercy. Whether someone is a Muslim or a non-Muslim, good or bad he is always bestowed with Allah's mercy. Not only humans but animals and every creature in this universe have His mercy. â€Å"My mercy encompasses all.†The difference between both of them is that Al-Rehman shows the vastness of mercy of Allah and Al-Rehman refers to the Allah's (SWT) mercy which is specific for the believers. 2. All praise to Allah, the Lord of all the worlds All praise to Allah, the Lord of all the worlds is the second ayah.Many scholars consider that there is not any difference between hamd and shukar. Hamd means praise which is done in love for someone but shukr is different. Shukr is thanking someone in return of something. The meaning of Rabb The word Rabb usually refers to Lord but it also means sustainer, master, nourisher and cherisher. Rabb usually shows the mastery and someone who has control over everything. The meaning of Aalameen The Arabic word Aalameen comes from the root word ‘Ayn-Lam-mim' which means to know, be aware, knowledge, science or by means of which something can be known. It comes from the word Alam and carries the significance of the meaning world or universe. 3.The Beneficent, the Most MercifulThis is the third ayah of Surah Al-Fatiha. The meaning of these words are already given before but the reason to repeat it again is that Allah (SWT) is giving emphasis on the fact that He is the only Lord who is forgiving and merciful. 4. The Only Owner of the Day of the RecompenseThe fourth ayah is: â€Å"The Only Owner of the Day of the Recompense†. God is the Lord of the Day when all generations of mankind gather together on order to render an account of their conduct, and when each person will be finally rewarded or punished for his deeds. The description of God as Lord of the Day of Judgment following the mention of his benevolence and compassion indicates that we ought to remember another aspect of God as well-namely, that He will judge us all, that He is so absolutely powerful, that on the Day of Judgment no one will have the power either to resist the enforcement of punishments that He decrees or to prevent anyone from receiving the rewards that He decides to confer. Hence, we ought not only to love Him for nourishing and sustaining us and for His compassion and mercy towards us, but should also hold Him in awe because of His justice, and should not forget that our ultimate happiness or misery rests completely with Him. 5. You (alone) we worship and you (alone) we ask for help The fifth ayah is: You (alone) we worship and you (alone) we ask for help. In this ayah it is being addressed that we worship Allah. The concept of worship is often misunderstood by people that it is only about prayers, fasting, and charity etc. Basically worship is everything one says or does for the pleasure of Allah. In other words worship is to obey. The ayah affirms the Lordship of Allah and affirms that worship is due to Him.6. Guide us on the straight pathThe sixth ayah is: Guide us on the straight path. This ayah is a Dua which make to Allah asking Him to guide us on the straight path. We humans get so much involved in the daily affairs of our life and living with different people who may get us involved in bad deeds. Thus we ask for guidance from Allah so that He helps us stay away from the bad deeds and we follow the right path, the one He wants us to follow which is Siraat-e-Mustaqeem. Siraat means path which should reach its goal and should be the shortest route to get there. Mustaqeem means straight, correct etc. thus Siraat-e-Mustaqeem is the straight path or in other words the right path. 7. The path of those you have blessed, not of those with anger on them, nor of those who are astrayAllah (SWT) has explained the above ayah in another ayah:†Whosoever obeys Allah and the Messenger, they are with those whom Allah has favored, and the Prophets, the sincere, the martyrs and the righteous, and these are the best company. † The people who have who have anger on them and who are astray are like Jews and Christians and are not favored and blessed by Allah the way the righteous people are. c)Impact of Surah Al-Fatiha on the life of a Muslim as servant of AllahSurah A-Fatiha has a great impact on the hearts of a Muslim as we recite it five times a day in our Namaz or Salah. And to start our Duas we need to recite it first. This is because of the nature of its greatness as a Dua and as a chapter of Holy Quran. Whenever a person is suffering from any difficulty or problem he needs to recite Surah Al-Fatiha. This Surah contains guidance and cure. Whoever reads Surah Al-Fatiha with belief he will definitely find guidance. Surah al-Fatiha is a cure for physical and also spiritual ailments. Without this Surah, even the daily prayers are incomplete. It is indeed a great treasure that has been given to us by Allah (SWT) through the Holy Prophet (PBUH). As a servant of Allah this Surah guides us towards the right path and good deeds. It creates a sense of gratitude among us as we realize that the hardships were actually the tests which were supposed to bring us closer to Allah (SWT). This makes us praise and thank Allah for all his blessings. This Surah makes us realize that as a servant we have to worship Allah only and ask Him for help so that he guides us on the right path and we are blessed by Him on the Day of Judgment.