Inventions of the Renaissance Clocks The first mechanical clock was invented in the early 1300’s. With this invention time began to be measured in hours (24 hours equaling a day). Galileo‚ an Italian scientist‚ discovered the pendulum in 1581. The pendulum greatly improved the constant movement of the hands or bell of a clock. The average error with the pendulum varied only by seconds each day. Before this the error was from 10 to 15 minutes a day. During the 1600’s the metallic gear‚ or toothed
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Some food in this world are made using microorganism to produce a desire flavour‚ taste and texture of the food. For examples: yogurt‚ tapai‚ cheese‚ bread and others. Starter cultures is used in these food production. A starter culture is a microbiological culture which actually perform fermentation. These starters usually consist of a cultivation medium‚ such as grains‚ seeds‚ or nutrient liquids that have been well colonized by the microorganisms used for the fermentation. These starters are formed
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CHAPTER I INTRODUCTION 1.1 Background Food is one of human sources of calorie‚ protein‚ fats‚ and nutrition. Yet‚ because of the highly nutritious content‚ food is susceptible to growth of microorganisms. By the presence of microorganisms in food‚ the food is more likely to have shorter shelf life. Thus‚ mostly it is resolved by the addition of antimicrobial substances to food‚ such as condiments and preservatives. Condiments and preservatives could inhibit the growth of microorganisms
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Detection of plasmids in arsenic (As) resistant bacteria isolated from As-contaminated groundwater Mahima Rani and Pinaki Sar* Department of Biotechnology‚ Indian Institute of Technology‚ Kharagpur‚ West Bengal–721302‚ India mahima06bt11@gmail.com‚ Ph: +91 8348523016 Abstract Role of plasmids in conferring resistance to several heavy metals and antibiotics to naturally occurring bacteria is well known. In contaminated environments‚ presence of metal resistant genes on plasmids often provide
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It has been called the pill that transformed America‚ the single most important invention of the 20th century. The invention being referred to is the birth control pill. Before the actual pill‚ there had been various forms of birth control‚ but none of them seemed to be very effective or simple to perform. One of the oldest references to birth control was the “withdrawal” method referenced in the Bible. In the 1870’s‚ a wide assortment of birth control devices were available in America -- such as
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The mobile phone—world’s best invention On 10th of March‚ 1876 Alexander Graham Bell transmitted the first speech using electricity. From that day forward‚ the telephone system changed every aspect of life. Although it did not immediately change the world‚ it set communication on a path that would change the future of communication. Mobile phones appeared in the early 1980’s and today there are millions in use. Today‚ mobile phones do much more than just allow for voice conversation‚ mobile phones
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Originally‚ a tribe of stone tool using hunter-gatherers‚ this civilization evolved into a sophisticated people who harnessed the command of gunpowder‚ medicine‚ and the arts among other things (Sayre‚ 2012‚ pg 208). Although little remains from China’s early history‚ the luxurious items carefully buried with royalty are a testament to the nation’s power. For example‚ emperor Shihuangdi of the Quin dynasty was buried in 210 BCE with an extensive army of unique terracotta soldiers‚ each painstakingly created
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states‚ and even other countries. But have you ever wondered how different today’s world would be without the invention of the telephone? In my opinion‚ the telephone has brought about the most far reaching and lasting changes in our civilization. The invention of the telephone has caused both positive and negative outcomes to our society. Some of the advantages of the invention of the telephone are: We can now instantly contact our family and friends‚ businesses can spread their services
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BIO 162 Microbiology for Allied Health D. Page Baluch Microbiology Many technical terms‚ names of cell structures are formed from Latin or Greek roots micro - very small; bio – life; ology – study study of very small living organisms that cannot be seen with unaided eyes Microorganisms or microbes They are virtually everywhere - ubiquitous Types of Microorganisms Bacteria Fungus Yeast & molds Bacillus E. coli Algae Archaebacteria Diatom Dead Sea salt pillar
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Major Inventions of the Late 19th Century and Early 20th Century They have been many major inventions within the late 19th and early 20th century. Throughout history‚ these inventions have made great impacts on society. Three of these inventions that made the greatest impact are the telephone‚ the telegraph‚ and the light bulb. Each of these inventions has made a different impact in some way but they are still some of the greatest inventions. The telephone has left a huge impact on the world
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