How to Make Pure Sand (Silicon Dioxide) in a Lab

How to Make Pure Sand (Silicon Dioxide) in a Lab Sand that you find on a beach consists of several minerals and organic matter. If you could separate out the impurities, you would have pure sand, which is silica or silicon dioxide. Here is how to prepare pure sand yourself in the lab. It is an easy project that only requires a few chemicals. Ingredients for Sand sodium silicate (make sodium silicate yourself)sodium bisulfatewater Make Pure Sand Mix together 5 ml sodium silicate solution and 5 ml water.In a separate container, use a glass stirrer to mix 3.5 grams sodium bisulfate into 10 mL of water. Keep stirring until the sodium bisulfate dissolves.Mix the two solutions together. The resulting gel that forms at the bottom of the liquid is orthosilicic acid.Place the orthosilicic acid into a heat-safe glass or porcelain dish and heat it over a burner flame for about 5 minutes. The orthosilicic acid dries to form silicon dioxide, SiO2, which is your pure sand. Sand is non-toxic, but it presents an inhalation hazard since the small particles could become trapped in your lungs if inhaled. Therefore, enjoy your sand, but dont play with it like you might with natural sand.

20 Extremely Easy Ways to Building Confidence at Work

20 Extremely Easy Ways to Building Confidence at Work Successful people tend to have at least one thing in common: confidence. If confidence isn’t already your strong point, it can be tough to figure out how to get some and apply it to your own life. Where do people find this mysterious elixir that lets people crush it, and let others know they’re crushing it? Unfortunately for us, there’s no magic involved in building confidence at work. But there is some good news: there are plenty of simple things you can do to boost your own confidence, and boost your career in the process.According to The Muse, building  confidence at work has three basic components:Comfort level in what you’re doing and what your goals are.Your understanding of what your strengths and talents already are, as well as your limitations.Your ability to trust your instincts (or ignore them), depending on the situation.Broken down this way, this gives you a very basic attack plan for boosting your own confidence in your work, and setting yo urself up for future success. Confidence is a unique skill in that there’s an art to it, sure, but also plenty of manageable, concrete things you can do to try to build your confidence. [via Happify]Let’s look at some of the things you can do to raise that confidence factor.1. Know your comfort zone.Are you comfortable with your daily tasks at work? Do you feel secure at your company, with the parameters of your work? Once you’ve sat down to figure out how you fit into the bigger picture at work, and how everything works, you can let go a little and feel more relaxed about your role.2. Make a list of things that would make you feel more comfortable at work.Maybe it’s working with your boss to adjust your workload, or taking on new responsibilities that are more in line with your long term goals. Maybe it’s connecting more with coworkers so that you work better with them on projects. Or maybe it’s as simple as promising to take a lunch break every day, or clean off your desk before you leave in the evening so that things don’t feel chaotic when you come back in the morning. Whatever is on the list, it should include tasks that will make you feel happier and more in tune with your job.3. Communicate more openly.If you have concerns, vent them! If these are issues you feel comfortable discussing with your manager, great. If not, it’s totally fine to have a trusted confidante (at or outside of work) with whom you can talk about anxieties and frustrations. Don’t keep things bottled up, because then they fester and become longer-held resentments. Similarly, if you have issues with a coworker, don’t just sit on them. Discuss them in a rational, professional way before miscommunications pile on miscommunications, and everyone’s ticked off. Being open about things (and getting in the habit of doing it) can make you feel like you have more control over a situation, as well as what the next step s are.4. Get outside feedback and help prioritizing.Confident people know they can handle what’s on their plate. That’s not because they can magically handle everything, but because they know what’s important and what they can do. If you feel overwhelmed, work with your boss to figure out how to restructure your tasks and make sure your head is in the game for the most important ones.5. Learn new skills.One of the best ways to feel more confident is to go out and get more skills. Feel a little insecure about your tech know-how? Find online tutorials. Scared of presenting? Take an improv class. Anxiety and self-doubt often stem from being unsure about how to tackle new things. If you dive right in and discover that you have the skills to take on new things, it’ll start to bolster your general confidence.6. Expand your network.Nobody is an island, right? Make sure you’re adding to your network all the time. It’s like having a virtual posse beh ind you, and can make you feel less like you’re out there on the high wire all alone. Feeling supported is key to confidence. You can build your network by trying to find open social events in your field, or by using social media.7. Engage experts in your field.This is kind of like building your network, but adds the step of trying to start dialogues with people in your field who Know Their Stuff. With social media, it’s easier than ever to follow someone’s posts, then offer comments and ask questions accordingly. It may not be the most personal connection, but it gets you in the habit of dialoguing about your own experience while learning from others’.8. Accept self-doubt.Even the most confident people have self-doubts. The key is in not letting those define your decisions, or just ignoring them completely. Self-doubt is kind of a mental check on our instincts. When you feel them, think about whether the concern is valid or not, and what you can do to fe el comfortable enough to push past those doubts.9. Sit up straight.This is a very physical thing you can do to start feeling more powerful and confident right away. Flash back to all those times your parent or a teacher told you to stop slouching. They weren’t doing it to be annoying- there are studies that show that good posture correlates strongly to confident thinking.10. Get physical.If you’ve got your head down working on something, it can start to feel like you’re in a bubble, with your own perspective swirling around and around. Taking a break to get up and walk around, do yoga for half an hour, etc. gives your brain some space, allowing you to come back and feel confident that you know what you need to do next.11. Drop a few off-color words.Of course, this one really depends on your audience- a meeting with colleagues and higher-ups is not the time to debut your new Swear Like a Pirate policy. But using strong words makes us feel strong and confident.12. Try some power posing.Body language is everything, according to social psychologist Amy Cuddy. Throwing a few power poses into your repertoire at work can make you feel more self-assured. You can channel your inner superhero while you stand with hands on hips, lean forward with hands flat on a desk or table, or sit back with your hands behind your head. These poses get you into an ownership mindset where you feel strong and self-assured.13. Use some daily affirmations.Okay, so gazing into the mirror and whispering sweet nothings to yourself sounds a little weird. I get it. But having a quick set of positive things that you say to yourself can help you feel more confident as you get ready to go about your day. Make statements like, â€Å"I WILL achieve _____ today,† or â€Å"I am so ready for this† as you’re getting ready for work.14. Envision success.Vision boards may not be everyone’s cup of tea- the arts and crafts part is optional. But having a clear image in your head of what your success looks like (on a project, in a year on the job, or whatever parameters you want to use) can make you feel more self-assured on your path to get there.15. Work on your physical appearance and confidence.You know the old clichà © â€Å"dress for success†? Well, it’s a pretty true clichà ©. Wear clothes that make you feel put-together and ready for the world. (Work appropriate ones, of course.) If that means getting up ten minutes earlier so that you have time to pick an outfit that makes you feel strong and attractive, do it! Personally, I’m guilty of defaulting to â€Å"what’s clean and readily available as I scramble to get ready?† and I always feel more ready to take on the world if I spend a little more time and wear what I want, rather than what’s easy.16. Be selective about who you spend time with.Your time is valuable, so you shouldn’t spend it with people who make you feel bad, or who ar e (quite frankly) a waste of time.17. Stop putting everyone and everything else first.Your career is the most important one (and mine is for me, and Aunt Sally’s is for her.) Whenever you make decisions, it’s fine to evaluate your needs and priorities above others.18. Live in the present.It’s so easy to get caught up in what happened back then, or what’s likely to happen in the future. Focusing on other times let’s self-doubt creep in about what you’re doing now. Try to stay focused on what’s directly in front of you.19. Speak your mind.This doesn’t mean brutal honesty all the time (as fun as it would be to remove all filters sometimes), but rather speaking up when you have something to contribute. Whether it’s in a meeting or a social occasion, don’t wait for the perfect moment to speak up- that moment may never come. Make your voice heard, even if you’re expressing an unpopular or dissenting opinion.20. F orgive yourself.The most important one is this: forgive yourself for mistakes, and move on. Getting caught up in a cycle where you blame yourself, and let that cause anxiety about how to act in the future is not a healthy place to be. Confident people know that stuff happens, and you learn from it and move on to the next thing. If it’s your fault, acknowledge that you’ll learn from it and do better next time, and let it go.All of these are things that you can start phasing in to your daily routines. There’s no need to overhaul your way of seeing the world- just adding in some practices that will help you get a stronger sense of yourself and your goals. That’s really the heart of confidence- knowing where you want to go, and the strengths you have in trying to get there.

The Most Favoured Colour Used in Food Packaging Design Essay

The Most Favoured Colour Used in Food Packaging Design - Essay Example After a literature review, primary data was collected through surveys. Data was collected on how humans associate colors with emotions and then certain packaged products were displayed to catch their immediate responses. The study revealed that while most associated red with a positive emotion when it came to buying the actual product, the product attributes bear significance on the packaging. This was also found in the case of Heinz ketchup and McDonalds – their sales were not adversely impacted when they changed their color from red to green. Culture and global trends also influence the purchase decision. For instance, since the trend today is for a greener environment, Coke, while still maintaining its red logo, has changed its packaging to a more eco-friendly material. The study concludes that red is not the most favored color in food packaging. However, the study has its own limitations which have been highlighted and areas for further studies have been recommended. Most products require good packaging. Packaging not only can protect the product from damage but can also promote sales. Sales occur through visual perception and this is where the color of the packaging plays an important role in consumer expectations. The color associations and conceptions exist in the memory and affect how people make choices. This is particularly relevant in the context of the supermarkets where consumers are constrained for time. However, market research indicates that 90% of consumer purchases are the result of a deliberate search and only 10% of purchases are made on impulse. And of those planned purchases, 60% of the decision to buy involves color (Rodemann 1999, p170).  

Ice Cream Production Essay Example | Topics and Well Written Essays - 1000 words

Ice Cream Production - Essay Example It also has beautiful packaging, creative in the field. We are targeting all health conscious people including those who have diabetes, athletes and have extra weight to shed. We are hoping to supply free samples initially and hope to get feedback. It will be advertised in the diet section of the magazines, and will be exhibited in food shows. It is highly economical cost wise as 1000 grams are produced at the cost of mere 3.47. "Despite the simplicity of the ingredients, the interactions between the components of ice cream are quite complex; because it is an emulsion, a foam and a dispersion at the same time, scientists have always struggled to classify it among the colloid family. This too is a lengthy process and intends to use oats instead of cream. It is necessary to emphasize that strict methods of production are used to produce a healthy alternative to the present form of ice cream and Ice Supreme has the capabilities of reducing obesity being a healthier food. As mentioned earlier, ground oats are used instead of cream and they give a thick creamy texture due to the starch in them. Frozen raspberries and riabena concentrate are blended together and this concentrate is added to milk, which is in turn is pasteurised by boiling it for five minutes. It is left to cool before 3 egg yolks stirred in and the solution is put in ice-cream maker for 30 minutes. Meringue is made using three egg whites, and adding sugar after 15 minutes. It is possible to face problems of too low cereal quantity and too weak flavour after using normal fruit juice. Product has to pass microbiological testing. It is necessary to mention that Ice cream ingredients could be replaced by diverse ingredients, though here we are sticking to the above. "Many commercial, large-scale manufacturers make ice cream from fat, water, milk proteins, sugar, stabilisers and emulsifiers http://www.chemsoc.org/chembytes/ezine/2001/davies_jul01.htm Ice cream is supposed to contain a considerable amount of milk fat and all the conventional ice cream adheres to this fat content. "Ice cream must legally contain more than 10% milk fat. The product also contains up to 15% sucrose, as well as flavorings and emulsifiers. The major component of ice cream is air and the product is essentially a frozen foam" http://www.foodprocessing-technology.com/projects/wells Suggested ingredients are much healthier. Basic ice cream manufacturing steps are mixing, pasteurisation, homogenisation, cooling, ageing, freezing, filling/packing, hardening, and storage and distribution. Mixing involves the initial binding of all ingredients in a suitable vessel which could be preheated. Usually a steam-jacketed, stainless steel vessel is fitted with an agitator and is connected to a pasteuriser and if done so, a calibrated recording deviser should be connected to record temperatures at different stages of heat treatment and the length of time taken should be noted down. It could also be fitted with a homogeniser that could mix the product at a high shear to break up the fat globules in pre-pasteurisation homogenisation or if fitted

Hemingway’s The Green Hills of Africa CRH Essays -- Green Hills of Af

Hemingway’s The Green Hills of Africa CRH The Green Hills of Africa is Hemingway’s second non-fiction work, set in 1933, following the author and his second wife, Pauline, on a big-game safari in Africa. It was first serialized and then published in 1935. The first run was of 10,500 copies selling at $2.75 a piece. While many smaller critics passed their typical glossy review of Hemingway, those at the height of literary criticism bombarded it. Particularly with respect to what Hemingway claimed the novel was. In the foreword of the novel, Ernest Hemingway writes, â€Å"The writer has attempted to write an absolutely true book to see whether the shape of a country and the pattern of a month’s action can, if truly presented, compete with a work of the imagination.†1 Fittingly the critical response to Hemingway’s second non-fiction work examined the novel in that respect, as well as in its achievement as a free-standing novel. The initial responses to the Green Hills of Africa fall into three categories: poor, indifferent, and promising. Starting with the poor reviews, always Hemingway’s favorites, John Chamberlain of the New York Times calls the novel â€Å"simply an overextended book about hunting†, not the â€Å"profound philosophical experience† that the foreword proposes it is. Further, it is â€Å"not one of Hemingway’s major works.†2 Newsweek says, â€Å"He said he wanted to write a novel and earn enough money to go back to Africa to "learn more about lions" and that is all he did.†3 Perhaps the most biting criticism comes from Edmund Wilson: As soon as Hemingway begins speaking in the first person, he seems to lose his bearings, not merely as a critic of life, but even as a craftsman.... Almost the only thing we learn abou... ...al format. 5. http://www.hemingwaysociety.org/virthem.htm This site provides many useful links to all aspects of Hemingway, including his writing, criticism, and other useful links. 1 Foreword, Ernest Hemingway, Green Hills of Africa 2 http://www.nytimes.com/books/99/07/04/specials/hemingway-green2.html 3 Africa: Book Hemingway Wrote So He Could Rejoin the Lions Newsweek, 6, October 26, 1935, 39-40 4 http://www.theatlantic.com/unbound/flashbks/hemingway.htm 5 pg. 157, Ernest Hemingway: The Critical Reception, Burt Franklin and Co. 1977 6 pp22, 50, The Literary Reputation of Hemingway in Europe, Leteres Modernes, 1965 7 pg. 157, Ernest Hemingway: The Critical Reception, Burt Franklin and Co. 1977 8 pg. 154, Ernest Hemingway: The Critical Reception, Burt Franklin and Co. 1977 9 152, Ernest Hemingway: The Critical Reception, Burt Franklin and Co. 1977

Consider the business model Essay

The easiest way to start a design is to consider the business model that you sat down with when starting these designs. You now need to recreate that structure in Active Directory using Organizational Units as the building blocks. Create a complete Organizational Unit structure that exactly mirrors your business model as represented by that domain. In other words, if the domain you are designing is the Finance domain, implement the finance organizational structure within the Finance domain. You don’t create the entire organization’s business model within each Organizational Unit; you create only the part of the model that would actually apply to that Organizational Unit. Draw this structure out on a piece of paper. Figure 8-3 shows the Organizational Unit structure of mycorp.com’s domain. We’ve expanded only the Finance Organizational Unit here for the example. Figure 8-3. The Mycorp domain’s internal Organizational Unit structure Once you have drawn an Organizational Unit structure as a template for your Active Directory hierarchy within the domain, you can begin to tailor it to your specific requirements. The easiest way to tailor the initial Organizational Unit design is to consider the hierarchy that you wish to create for your delegation of administration. Two Tier Hierarchies A two tier hierarchy is a design that meets most company’s needs. In some ways it is a compromise between the one and Three Tier hierarchies. In this design there is a Root CA that is offline, and a subordinate issuing CA that is online. The level of security is increased because the Root CA and Issuing CA roles are separated. But more importantly the Root CA is offline, and so the private key of the Root CA is better protected from compromise. It also increases scalability and flexibility. This is due to the fact that there can be multiple Issuing CA’s that are subordinate to the Root CA. This allows you to have CA’s in different geographical location, as well as with different security levels. Manageability is slightly increased since the  Root CA has to be brought online to sign CRL’s. Cost is increased marginally. Marginally speaking, because all you need is a hard drive and Windows OS license to implement an Offline Root. Install the hard drive, install your OS, build your PKI hierarchy, and then remove the hard drive and store it in a safe. The hard drive can be attached to existing hardware when CRLs need to be re-signed. A virtual machine could be used as the Root CA, although you would still want to store it on a separate hard drive that can be stored in a safe. Three Tier Hierarchies Specifically the difference between a Two Tier Hierarchy is that second tier is placed between the Root CA and the issuing CA. The placement of this CA can be for a couple different reasons. The first reason would be to use the second tier CA as a Policy CA. In other words the Policy CA is configured to issue certificates to the Issuing CA that is restricted in what type of certificates it issues. The Policy CA can also just be used as an administrative boundary. In other words, you only issue certain certificates from subordinates of the Policy CA, and perform a certain level of verification before issuing certificates, but the policy is only enforced from an administrative not technical perspective. The other reason to have the second tier added is so that if you need to revoke a number of CAs due to a key compromise, you can perform it at the Second Tier level, leaving other â€Å"branches from the root† available. It should be noted that Second Tier CAs in this hierarchy can, like the Root, be kept offline. Following the paradigm, security increases with the addition of a Tier, and flexibility and scalability increase due to the increased design options. On the other hand, manageability increases as there are a larger number of CAs in the hierarchy to manage. And, of course, cost goes up.

The Power of Nathaniel Hawthorne Essay - 3056 Words

The Power of Nathaniel Hawthorne New England in the early 1800s, before the Civil War, was a place teeming with artists, intellectuals, and reformers of every sort. Many of Americas great literary geniuses came out of this era; and among the greatest of these was Nathaniel Hawthorne. He was, as Q. D. Leavis put it, the critic and interpreter of American cultural history and thereby the finder and creator of a literary tradition (Kaul 27), and, a sociological novelist in effect, employing a poetic technique which communicates instead of stating his findings (Kaul 28). In his stories, Hawthorne pointed out many characteristics of American society and of human nature, and brought about a new tradition in American literature.†¦show more content†¦They did so again the next summer, and in 1818 became, in Elizabeths words, permanent residents of Raymond (Van Doren 11). In the Maine wilderness, Nathaniel, who because of his injury had become gloomy and listless with the belief that he would never be active again, learned once more to have a good time. His foot had gradually healed, and the woods of Raymond were a place for him to run free and recuperate from the town life that had cramped him. He enjoyed the time in Raymond thoroughly, and hated to leave when, in 1819, his mother decided it was time for him to prepare for the rest of his life. Nathaniel was sent back to Salem, to live once more with his Manning relatives while he was being tutored by Benjamin Oliver in preparation for college. For admission to Bowdoin College, he had to learn to write Latin grammatically, and to be well versed in Geography, in Walshs Arithmetic, Ciceros Select Orations, the Bucolics, Georgics, and the Aeneid of Virgil, Sallust, the Greek Testament, and the Collectanea Graeca Minora (Van Doren 16). This was accomplished by the fall of 1821, and then he entered Bowdoin College in Maine. During his years there he made many friends, two of which were to remain his closest friends throughout his life: Franklin Pierce, later to be President; and Horatio Bridge. Hawthorne was not an outstanding student. He had never liked school, which in those days wasShow MoreRelatedEssay Nathaniel Hawthorne1152 Words   |  5 PagesNathaniel Hawthorne’s hatred of Puritanism was so big that he described in many of his writing such as The Scarlet Letter and The Minster Black Veil. He usually satirized them as evildoers and sin creators, not holy and Christ zealous as they described themselves. Hawthorne also used the effects of mysterious human mind and spontaneous action to describe the Puritan as satanic worship and God disobedience. In result, his writing reflected much of his Puritan ancestry affections. 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