com/content/10/1/46 RESEARCH Open Access Misleading measures in Vitamin D analysis: A novel LC-MS/MS assay to account for epimers and isobars Iltaf Shah1‚ Ricky James1‚ James Barker2‚ Andrea Petroczi1 and Declan P Naughton1* Abstract Background: Recently‚ the accuracies of many commercially available immunoassays for Vitamin D have been questioned. Liquid chromatography tandem mass spectrometry (LC- MS/MS) has been shown to facilitate accurate separation and quantification of the major
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Spain‚ being recently unified‚ wanted spices and gold. The gold to them could purchase anything. So they offered Christopher Columbus ten percent of the profit‚ if he would bring back gold and spices. Christopher Columbus was sent to Asia with three ships: the Nina‚ the Pinta‚ and the Santa Maria. Columbus sailed for thirty-three days not sighting land. It wasn’t until early October of 1492 that he and his crew finally landed. He supposedly was the first to sight land and received a ten thousand
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WATER QUALITY AND CONTINMINANTION Introduction I. Body Paragraph #1 – Background~ Water quality is decided by assessing three classes of attributes: biological‚ chemical‚ and physical. There are criteria of water quality set for each of these three categories of properties. The standards for drinking water are developed by the Environmental Protection Agency (EPA)‚ World Health Organization (WHO) etc. All municipal (public) water supplies must be measured against these standards. Testing how
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2. Objectives The objectives of this experiment are to observe the keeping quality of some food products‚ study the various simple methods of moisture determinations using different drying method. And determine the water activity in some food samples such as biscuits‚ bread‚ flour and instant noodles by using water activity measurement machine. 3. Theory To determine the moisture content in the food‚ methods such as open dish method and infrared balance method are used. 3.1 Hypothesis
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Exam Assignment – Philosophy of Science 2012 This essay will contain a comparison of the two philosophers Karl Popper and Thomas Kuhn and their respective scientific theories. It is relevant because they both focused on the same problems and tried to find an explanation. They each had their own unique ideas and strived to answer the same questions‚ but their theories often clashed‚ leading to great discussion. Even with different views‚ their work has a great number of similarities and they often
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A Work in Progress by Connor Franta is a 212 page non-fiction book written about his life experiences. In this book he tells the reader about growing up in Minnesota‚ moving to California‚ his childhood‚ his family‚ his friends‚ his high school experience‚ becoming a YouTuber‚ and much‚ much more. Connor starts the book by giving us a back story from when he was six years old‚ explaining a 5K. He says that his dad always had a camera with recording the running events and the family‚ and Connor thought
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Harriet Abramowitz James Click October 2014 Post Colonial Literature Progress & Ideology Reflection happens when there is an absence of action. In the case of colonization the role of the inferior is imposed onto the colonized by the self-proclaimed superior‚ the colonizer. Simplifying the actions for both sides in relation to ideology‚ the inferior’s actions are placed on a spectrum of accepting that ideology to rebelling against it and the superior on a spectrum of the action of imposing
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values for each expression. Write your response in interval notation. 10 Ϫ5 a. b. 3x ϩ 4 1x Ϫ 8 2. Perform the operations indicated. a. 1Ϫ18 ϩ 1Ϫ50 b. 11 Ϫ 2i2 2 3i c. d. 12 ϩ i132 12 Ϫ i132 1ϩi 3. Solve each equation or inequality. a. Ϫ2x3 ϩ 4x2 ϭ 50x Ϫ 100 b. Ϫ3x4 Ϫ 375x ϭ 0 c. Ϫ2Ϳ3x ϩ 1Ϳ ϭ Ϫ12 4 x d. Ϫ3 ` Ϫ 5 ` Յ Ϫ12 e. v3 ϭ 81 3 1 f. Ϫ21x ϩ 12 4 ϭ Ϫ6 Solve for the variable indicated. 2 1 4. V ϭ r2h ϩ r3; for h 5. 3x ϩ 4y ϭ Ϫ12; for y 3 3 Solve as indicated‚ using
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Name: Jack Lin Personal Progress Assessment Due ____________/ Worth 35 points Part 1: Worth 10 points For this assignment‚ visit Moodlerooms and look at your grades on Thursday or Friday of the 8th week of classes to view your midterm progress grade. Midterm progress grades will have been updated when you see an announcement showing the midterm grade breakdowns. Once you have viewed your grades and compared your points to the announcement showing progress grade breakdowns‚ answer the following
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Management‚ Changchun University of Science and Technology 7989 Weixing Road‚ Changchun 130022‚ China Tel: 86-431-8628-7978 E-mail: blessyandm@163.com Yan Wang (Corresponding author) School of Economics and Management‚ Changchun University of Science and Technology 7989 Weixing Road‚ Changchun 130022‚ China Tel: 86-431-8521-7930 Abstract At present‚ the world economy is shifting to the model of knowledge-based economy‚ knowledge and technology to economic growth has greatly exceeded the sum of the contribution
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