Why Do Apple Slices Turn Brown

Apples and other produce (e.g., pears, bananas, peaches) contain an enzyme called polyphenol oxidase or tyrosinase. When you slice open or bite into a piece of fruit, this enzyme reacts with oxygen in the air and iron-containing phenols that are also found in the fruit. This oxidation reaction causes a sort of rust to develop on the surface of the fruit. You will notice browning whenever a fruit is cut or bruised because these actions damage the cells in the fruit, allowing oxygen in the air to react with the enzyme and other chemicals inside. The reaction can be slowed or prevented by inactivating the enzyme with heat (cooking), reducing the pH on the surface of the fruit (by adding lemon juice or another acid), reducing the amount of available oxygen (by putting cut fruit under water or vacuum packing it), or by adding certain preservative chemicals (like sulfur dioxide). On the other hand, using cutlery that has some corrosion (common with lower quality steel knives) can increase the rate and amount of the browning by making more iron salts available for the reaction.

The Effects Of Air Pollution On The Environment - 749 Words

In the past fifty years, our world has seen remarkable poverty alleviation. Access to running water, electricity, and high-quality healthcare are becoming more common globally as countries continue to develop. The increased mechanization of production has alleviated many problems that poor countries have faced in the past such as hunger, high infant mortality rates, and disease; but the increased industrialization of low-income nations has placed a huge burden on policymakers. Populations continue to face a growing list of unfortunate externalities. One dire consequence of industry that requires urgent attention is environmental pollution. Increased economic activity produces an increasing amount of waste that producers must dispose of. Of particular interest to policymakers are air pollutants, which are easily disposed of through pipes and vents by producers at a minimal cost. Air pollution has been shown to increase respiratory disease, cardiovascular disease, and increased cancer rates. Additionally, air pollution has substantially increased the amount of greenhouse gases in the earth s atmosphere. Such changes in our climate will lead to species extinction, loss of biodiversity, and increased social issues. The wide-ranging effects on humans include a decreasing supply a safe drinking water, food shortages, and natural disasters. Among the methods that governments use in response to these alarming realities are emissions trading programs. By turning to the concept ofShow MoreRelatedThe Effects Of Air Pollution On The Environment Essay1198 Words   |  5 PagesEnvironmental pollution will cause direct damage to the ecosystem and impact, such as desertification, forest destruction, water eutrophication, will also give ecological systems and human society caused by indirect harm, and sometimes this indirect environmental effects than the harm caused Of the direct harm is greater, more difficult to eliminate. For example, the greenhouse effect, acid rain, and ozone depletion are the environmental effects of air pollution. This environmental effect derived fromRead MoreThe Effects Of Air Pollution On The Environment Essay755 Words   |  4 PagesBackground and Analysis Air pollution is the infiltration of chemicals or toxic molecules into the atmosphere. In the global context many countries including China, the United States, Mexico, and others are haunted by pollution in the air. However each has a certain degree of air pollution different from the other. Air pollution kills animals and plants by intoxicating our bodies with harmful bacteria and chemicals. Unless our bodies become immune or we learn to clear the pollution earth s ecosystemRead MoreThe Effects Of Air Pollution On The Environment Essay785 Words   |  4 PagesAir pollution can result from both human and natural actions. Natural events that pollute the air include forest fires, volcanic eruptions, wind erosion, pollen dispersal, evaporation of organic compounds and natural radioactivity. Pollution from natural occurrences is not very often. 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Pollution is caused by the toxic release of chemicals and pollutants; releasing pollutants into the atmosphere harm the planet and pose a threat to human lives. Some of these pollutants include Carbon Monoxide, lead, acid gases, and Nitrogen oxides. Most of these pollutants are caused by industrial factories and vehicle exhaust. Air pollution is a global battle and preventing it will only help decrease the existing damage. In China, airRead MoreAir Pollution And Its Effects On The Environment1613 Words   |  7 Pagesvarious exhaust gases today, a level of air pollution has significantly increased in the environment. The smog enveloping the city is the most visible and obvious sign of urban pollution. However, even invisible harmful particles can have a big impact on the quality of airspace. In general, any substance released into the environment and having an adverse effect, is an air pollution. Hazardous substances present in the air, not only affect the environment but to a greater extent on the person whoRead MoreAir Pollution And Its Effect On The Environment814 Words   |  4 PagesAir is vital to our planet, life is simply impossible without it. Air pollution â€Å"refers to the contamination of the air, irrespective of indoors or outside. A physical, biological or chemical alteration to the air in the atmosphere can be termed as pollution. It occurs when any harmful gases, dust, smoke enters into the atmosphere and makes it difficult for plants, animals and humans to survive as the air becomes dirty.† (Jacobson, 2017) Air pollution has introduced countless negative effects toRead MoreThe Effects Of Air Pollution On The Environment1261 Words   |  6 Pagescovered by plastic, and people have already used most of our sources from 29% of the earth. Air pollution is also really bad right now especially in developing countries. They burn coal so much that the carbon dioxide amount in the air is too high. On the other hand, companies do not pay attention at all on the cleaning environment where people work; therefore, it causes a lot of people ill due to the dirty environment. People waste s o many product and materials that they could recycle and use again, howeverRead MoreThe Effects Of Indoor Air Pollution On The Environment996 Words   |  4 PagesHumans, animals, and plants need air to survive, but how can they survive if the air that they breathe is polluted? Every cell in your body needs oxygen in order to live. The air that everyone breathes contains oxygen and other gases. Hazardous chemicals escape into the environment to pollute the air from numerous human activities. The ever growing combustion of fossil fuels in the last century is responsible for the biggest progressive change in the atmosphere. Despite the other numerous environmentalRead MoreThe Effects Of Air Pollution On The Environment2797 Words   |  12 PagesThe typical public, particularly sick people with upper or inferior respiratory symptoms know that severe respiratory impacts can take place due to air pollution based on the information from the media. It is vital for the relevant specialis ts to possess present information of the probable health impacts as well as the manner in which they might influence their clients in order to instruct them adequately. In particular, the specialists in the field should meticulously know that both gaseous as well

Essay about A Time in History - 674 Words

A Time in History I’ve been asked before: â€Å"What time period in history would you most like to visit and experience the most?† And I would have to stop and wonder where exactly I would want to go. I use to have much trouble in answering this question. There are countless events and points of time in history that I would absolutely love to get to see with my own eyes and experience with my own body and mind. However, I now find it rather easier to respond without having to stop and think for so long. Somewhere along thereabouts of the 13th century would definitely be one of my choices now. There are many things I would like to see for myself. For one, the works of art produced during that time period would be first on my to-do†¦show more content†¦His works range from his realistic Madonna Enthroned painted tempera on wood in 1310 to his ever-famous painting, The Lamentation over the Dead Christ, painted fresco in the Arena Chapel in Padua, Italy earlier in 1305. Be cause of his advances, artists thereafter began to accomplish the same. His works I would definitely like to see for myself. The accomplishments in architecture during that time, I have to say, are simply genius. Just to think of how these mass cathedrals, palaces, and such other buildings were precisely thought of and built absolutely fascinates me and blows my mind. Gothic architecture, I think, would be a good sight to see. I’d like to see the hard ships of the labor done on such high structures as well as how exactly they put together everything. For example, the stained-glass windows that are found in most Gothic-style cathedrals must have been a long time consuming process. The meticulous work done on these windows is extraordinary. There are too many chapels and cathedrals for me to specifically name all the ones I would like to witness being built. I will name, however, the abbey church of Saint Denis, the Florence Cathedral in Italy and the Palazzo Pubblico, w hich is also found in Italy. Finally, the last thing I would admire about the time is the literature. There is nothing better than trying to analyze exactly what an author was thinking at the time he or she was writing hisShow MoreRelatedThe Missing Time : The History Of Human History1345 Words   |  6 Pagesmissing time, the several months just before the arrival of the volunteers era. The more Phillip thought about it the more he was almost certain of that. They must have been watching us at that point in our history. The world was at its all time worst then, at a critical juncture, a precipice, and they changed all that. They altered the course of human history almost instantly and caused all of civilization to do a complete turnaround. 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Structure and Features of CGC’s New System

Questions: 1. Discuss the criteria to consider in specifying the structure and features of CGCs new system. 2. Identify the data that should be incorporated into CGCs new system to provide adequate planning capability. Explain why each data item it is important and the level of detail needed for the data to be useful. Answers: Introduction CGC at present is a champion amongst the most hunt down after relationship by ethicalness of outsider gas suppliers. In like way, the weight on the relationship to go on the required measure of fundamental gas is vital. The affiliation has considered a strategy to get together to the making eagerness for the commonplace gas. In doing likewise, CGC has built up a point of confinement plant for the trademark gas that it gets from the affiliations that it has contracts with. The affiliations should store their gas in the farthest point that CGC has. The relationship along these lines give a specific volume of trademark gas on the first of September which the affiliation considers as their start of year. Regardless, the adherence to a solitary date gives a test to the affiliation that it doesn't permit it to figure the careful entire that it requires. The philosophy accordingly brings a hellfire up in the affiliation's number of totally the total it requires. The measures to contemplate in stipulating the structure and features of CGCs new system Division of Customers Quickly coming about to the usage of natural gas is never predicted that would stay tried and true, the customers require particular volumes of gas every year. If all else fails, it makes an immense partition in the full scale. The alliance has countered this issue by cutting down certain supplies (J. Pacua and cianowski, 2016). The connection has shut down operations in different front line and business places and plans to display their positive circumstances for the family division. The running with table is a representation of how much the connection is spilled over the particular ranges that it works in. Class Customers Sales in Cubic Feet Revenues Residential 160,000 80 billion $160 million Commercial 38,000 15 billion $ 25 million Industrial 2,000 50 billion $ 65 million Selling Priority At present, the relationship in like way has a total offer of 145 billion cubic feet and pay of $250 million. The alliance along these lines has an examined the general strategies in a year. The alliance has, notwithstanding, been not talented go on the required whole and along these lines drew in additional on the family department (Konrath, 2010). The near to gas customers are further divided into segments depending on their employments. The customers are given the choice of a standard delivery system or a crucial delivery system. The customers who have a utilization of under 50000 warm units would advantage the standard delivery system while those using more than that ought to use the fundamental delivery system. Developing supplementary choices While portraying the new system, it ought to be reviewed that the general system ought to be kept with a couple of minor changes. The advancement of a course of action must recall that the new system must figure a way to deal with oversee give each one of the customers from each one of the groupings with whatever they require. The customers ought to be given choice actuates if not unequivocally the same that is to be supplied. While the alliance is on an extremely fundamental level focused on the supply of natural gas, advancement of some other choice sources would not be risky to the connection (2011-12 estimates, 2012). The new system ought to likewise parcel the time range in a way that the association can pick the volume of gas that is required for a changed measure of time. Isolating the time explore presentation shorter areas would give the connection the by and large required control over the required volume. The statistics which should be merged into CGCs new system to deliver appropriate planning ability Statistics of the Distinct Volume Most importantly, the statistics that is required for the change of the new system would be the data as for the measure of volume of gas is used by each customer and that circuits both the range gas customers in addition the present day and business customers. This is, regardless, impossible by a format system as diagrams are not in light of current circumstances solid and the slants of the customers will without a doubt change after the study has happened. Along these lines, the system of finishing a study is not for the most part a remarkable measure for picking the volume of gas used by the customers (Hohmann and Holzmann, 2013). To pick this section, the customers ought to be pulled back, not by a system, yet rather by approaches, the customers should be outfitted with different arrangements according to their specific occupations. The division of game-plans would outfit the customers with the ability to pick an approach as appeared by their utilization and as necessities be, wou ld nearly give the association an unmistakable considered the measure of a customer under each strategy. The division of the customers would thusly outfit the association with the ability to plot the unmistakable measure of natural gas to be disengaged and picked up from the contracted affiliations (Faed, Hussain and Chang, 2013). The running with table is a sensible structure for the strategies that could be made with a particular finished objective to detach the customer base. Scheme Customers covered General Non-Heating Delivery Organizations that use natural gas only for handling commitments (Mao, 2014) General Heating Delivery Organizations using natural gas for the resolves of treating and space reheating Large Volume Delivery The Industries that ingest more than 300,000 thermos yearly Compressed Natural Gas (CNG) Delivery The organizations that use natural gas for the manufacturing of compressed natural gas that would be used in CNG automobiles (Farzaneh-Gord et al., 2015) High Load Delivery Industries that ingest over 2,000,000 thermos yearly Industrial Delivery Industries that use natural gas all through the year for the manufacturing measures and other usages. Commercial Delivery Industries that use natural gas for cookery and other linked resolves (Smart, Gaisford and Basit, 2014). Large Volume Interruptible Delivery Industries that ingest more than 500,000 thermos usually The table demonstrates a portrayal of the impelled customers, in any case, there ought to be the system for the sales of the neighboring customers moreover. The system of the customers in such a way would give the connection the key data that is required with a particular last objective to empower a figuring of the measure of gas is to be required. Doing in like manner would make a free market movement adapt that would not end up being a weight on the alliance's central focuses. Division of Time Frame of Operations Current division of time frame The running with step would be the division of the time. The relationship at present uses the yearly game-plan to detail the getting system of the natural gas. The date is the first of September when the association gets the gas from the ten affiliations that it has a concurrence with (Samantaray, Kamwa and Joos, 2010). The affiliations ought to give the required measure of gas to CGC on the date and the gas is used for the year. In any case, this system is not particularly practical as the association can't ensure about the volume of gas to be used as a part of the center of this period. The connection ought to as necessities be pack the time into semi-dependably or quarterly or better still month to month divisions. Perfect circumstances of Divisions of time assignment into shorter areas The shorter time part would give the alliance the key considered what volume to buy according to the prerequisites (Snchez Martn, 2012). Keeping such a high measure of time for the decision of the volume can end up being shaky for the connection and as necessities be, the division of the time into more unassuming parts would give the alliance what it needs to focus on the asking for of the customers. The seeing of the customers would give alliance to a great degree required figures for the usage and credit cost. The connection can then keep purchasing the definite aggregate that they would require. The division of the time frame would enable the relationship to see the instance of usage (Dhayalan and Preethi, 2016). The instance of use in the latest month would outfit the association with a considered the aggregate to buy before the next month. Moreover, the expansion in customers would be less requesting to control for this circumstance. In perspective of yearly figuring, it is fund amentally more difficult to enroll the aggregate more gas is to be remote made remembering the final objective to fulfill the asking for of the new customers. In such a case, the use of even a specific customer exhibits an endless number. The closeness of such a wide volume will in fact make partitions of estimations that would influence the alliance. Regardless, when the time portion is isolated into smaller regions, it is less requesting to join the required volume of gas that ought to be obtained for supplying to the customers. A little detachment here and there can be controlled through different means. Subsequently, including new customers would be less requesting in this system. Use of the new time frame In the crucial system, customers are required to apply for the relationship of gas delivery and the supply begins basically after September 1. The clarification for this is the connection needs to outline the measure of customers that it gets one year from now (Coffe, 2015). The estimation then encounters a whimsical methodology that considers the standard usage of each customer. The connection then demands the undefined whole more than the past deals remembering the picking focus to supply to each customer. The system in this manner furthermore finishes a wide number of customers not measuring up with respect to the present circumstance for the affiliation inferable from the obstacle in getting the delivery. The procedure can be enhanced by taking after a philosophy of benefitting for a month to month supply. The connection can buy the required natural gas on a month to month premise from the suppliers and after that go on them in the process unraveling the estimation of the total m ore to demand next time (Martnez-Snchez, 2012). The system would attract more customers as the customers would basically need to apply the earlier month and the connection would be set up with their stipulated volume of natural gas the next month. The proximity of such a number would likewise empower a strategy that would not perform wastage of points of interest inducing a system that would outfit the association with the key volume that it needs to buy to fulfill the asking for the following month. Figure 1. Overhauling the system of Calculating Customers Regardless of the way that the connection uses particular allots to find the measure of customers that are required remembering the finished focus to pick the volume of gas to be picked up, there ought to be an adjustment meanwhile. Figuring the measure of customers is key at any rate it ought to be reviewed that it is deficient (Monir and Asif, 2014). The estimation ought to be more on a level that considers the volume of natural gas that is eaten up. Since CGC ways to deal with focus on the zone gas supply market, it ought to be looked into that such a business range gives a separating legit picture before the association. Fundamentally figuring the measure of customers does not give any idea in light of the route that in a family unit market, finding an ordinary measure of utilization is unprecedented (Plug, Ballard extend supply deal, to target NA forklift market, 2010). The necessities and use will surely changes in such a business part in a matter of months or even weeks. The c heck of a general use volume thusly ought to be brought into spot. Learning in matters of volume would thusly outfit the association with the most ideal approach to manage technique the total required in the running with session. Such a vigilant system may be more difficult to finish however there is no isolating choice to such a technique(Bajaj, Gill and Kumar, 2015). Figure 2. Conclusion CGC has been encountering an issue in the relationship of motivations behind interest inferable from its lacking estimation systems. For this condition, the redesign can be competent if there is an attainable procedure to screen the mindful level of offers and supply. The numbers for diagrams and supply ought not to be in a course number of clients but instead in an estimation of the volume. The system ought to, in any case, be streamlined. In doing in light of current circumstances, the system would be one where the clients are segregated. Division of the clients would furnish the relationship with the hugely required thought for setting their needs as appeared by the requesting of the client base. The report utilized three spots where the redesign could be fit checking on the last goal to keep up a concordance between the free market headway. The covered step is the depiction of the client base as appeared by their use and fields of use. The second step is to withdraw the time peri od in making orders. The third system is the alteration in the midst of the time spent picking use. Depiction of the clients gives the association the liberally required considered setting inclines. Division of the time task makes it less asking for the relationship to portray the measures for the figuring of the measure of requesting is to be made. Likewise, last walk would be an update of the arranging strategy. The present system is one where the measure of clients is the segment that is considered. Clearly maybe, there ought to be a system for the check of the volume that is required. The utilization of these three variables would give the affiliation the generously obliged capacity to change free market development and in the process direct assets sensibly. References 2011-12 estimates. (2012). [Ottawa?]: Human Resources and Skills Development Canada. Bajaj, N., Gill, J. and Kumar, R. (2015). An Approach for Similarity Matching and Comparison in Content based Image Retrieval System.IJIEEB, 7(5), pp.48-54. Coffe, H. (2015). Time use among New Zealand Members of Parliament.Time Society. Dhayalan, D. and Preethi, R. (2016). Overcoming Circumstances Caused by Jammer Using Time Interval / Sampling Method.International Journal Of Engineering And Computer Science. Faed, A., Hussain, O. and Chang, E. (2013). A methodology to map customer complaints and measure customer satisfaction and loyalty.SOCA, 8(1), pp.33-53. Farzaneh-Gord, M., Niazmand, A., Deymi-Dashtebayaz, M. and Rahbari, H. (2015). Effects of natural gas compositions on CNG (compressed natural gas) reciprocating compressors performance.Energy, 90, pp.1152-1162. Konrath, J. (2010).Snap selling. New York: Portfolio. Hohmann, D. and Holzmann, H. (2013). Semiparametric location mixtures with distinct components.Statistics, 47(2), pp.348-362. Pacua, A. and cianowski, J. (2016). Terpenes As Green Starting Materials For New Organoselenium and Organotellurium Compounds.Current Green Chemistry, 3(1), pp.36-50. Mao, K. (2014). Heating Coil and Delivery Pipe Design of Asphalt Heating Equipment.AMM, 635-637, pp.52-55. Martnez-Snchez, F. (2012). TIME TO MARKET AND IMPATIENT CUSTOMERS.Bulletin of Economic Research, 65(2), pp.194-202. Monir, A. and Asif, I. (2014). Grooming those microfinance fails to accommodate in: System needs major overhauling.African Journal of Business Management, 8(12), pp.393-440. Plug, Ballard extend supply deal, to target NA forklift market. (2010).Fuel Cells Bulletin, 2010(8), p.3. Samantaray, S., Kamwa, I. and Joos, G. (2010). Ensemble decision trees for phasor measurement unit-based wide-area security assessment in the operations time frame.IET Gener. Transm. Distrib., 4(12), p.1334. Snchez Martn, F. (2012). The smallest divisions of time: terminological and lexicographical aspects.Verba Hispanica, 20(1), p.325. Smart, A., Gaisford, S. and Basit, A. (2014). Oral peptide and protein delivery: intestinal obstacles and commercial prospects.Expert Opinion on Drug Delivery, 11(8), pp.1323-1335.