Home
Search results “The chemical methods analysis” for the 2014
Analytical chemistry
 
19:11
Analytical chemistry is the study of the separation, identification, and quantification of the chemical components of natural and artificial materials. Qualitative analysis gives an indication of the identity of the chemical species in the sample, and quantitative analysis determines the amount of certain components in the substance. The separation of components is often performed prior to analysis. Analytical methods can be separated into classical and instrumental. Classical methods (also known as wet chemistry methods) use separations such as precipitation, extraction, and distillation and qualitative analysis by color, odor, or melting point. Classical quantitative analysis is achieved by measurement of weight or volume. Instrumental methods use an apparatus to measure physical quantities of the analyte such as light absorption, fluorescence, or conductivity. The separation of materials is accomplished using chromatography, electrophoresis or field flow fractionation methods. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 11174 Audiopedia
QUANTITATIVE ANALYSIS
 
06:13
For more information: http://www.7activestudio.com [email protected] http://www.7activemedical.com/ [email protected] http://www.sciencetuts.com/ [email protected] Contact: +91- 9700061777, 040-64501777 / 65864777 7 Active Technology Solutions Pvt.Ltd. is an educational 3D digital content provider for K-12. We also customise the content as per your requirement for companies platform providers colleges etc . 7 Active driving force "The Joy of Happy Learning" -- is what makes difference from other digital content providers. We consider Student needs, Lecturer needs and College needs in designing the 3D & 2D Animated Video Lectures. We are carrying a huge 3D Digital Library ready to use. QUANTITATIVE ANALYSIS:This analysis gives the percentage composition of elements present in an organic compound.A known mass of an organic compound is burnt in the presence of excess of oxygen and copper II oxide.Carbon and hydrogen in the compound are oxidised to carbon dioxide and water respectively. The mass of water produced is determined by passing the mixture through a weighed U-tube containing anhydrous calcium chloride. Carbon dioxide is absorbed in another U-tube containing concentrated solution of potassium hydroxide. These tubes are connected in series. The increase in masses of calcium chloride and potassium hydroxide gives the amounts ofwater and carbon dioxide from which the percentages of carbon and hydrogen are calculated.Let the mass of organic compound be m g, mass of water and carbon dioxide produced be m1 and m2 g respectively;Percentage of carbon=12x m2 x100/ 44 x m.Percentage of hydrogen = 2 x m1 x 100/ 18 x m. Nitrogen:There are two methods for estimation of nitrogen: 1. Dumas method and 2. Kjeldahl's method. 1. Dumas method:The nitrogen containing organic compound, when heated with copper oxide in an atmosphere of carbon dioxide, yields free nitrogen in addition to carbon dioxide and water.The mixture of gases so produced is collected over an aqueous solution of potassium hydroxide which absorbs carbon dioxide. Nitrogen is collected in the upper part of the graduated tube.Let the mass of organic compound = m g. Volume of nitrogen collected = V1 ml. Room temperature = T1K. Volume of nitrogen at STP= T1K. Volume of nitrogen at STP=p1 v1 x 273 / 760 x T1. Where p1and V1are the pressure and volume of nitrogen, value of p1 is obtained by the relation:p1= Atmospheric pressure - Aqueous tension. 22400 ml N2 at STP weighs 28 g Vml N2 at STP weighs =28 x V /22400 grams. Percentage of nitrogen =28 x 100/2240xM. 2. Kjeldahl's method:The compoundcontaining nitrogen is heated withconcentrated sulphuric acid. Nitrogen in thecompound gets converted to ammoniumsulphate. The resulting acidmixture is then heated with excess of sodium hydroxide.The amount of ammonia produced is determined by estimating the amount of sulphuric acid consumed in thereaction.It is done by estimating unreacted sulphuric acid left after the absorption of ammonia by titrating it with standard alkali solution. The difference between the initial amount of acid taken and that left after the reaction gives the amount of acid reacted with ammonia.Let the mass of organic compound taken = m g. Volume of H2SO4 of molarity, M,taken = V mL.Volume of NaOH of molarity, M, used for titration of excess of H2SO4 = V1 mL.V1mL of NaOH of molarity M = V1 /2 mL of H2SO4 of molarity M. Volume of H2SO4 of molarity M unused = V - V1/2mL.V- V1/2 mL of H2SO4 of molarity M = 2 V-V1/2 mL of NH3 solution of molarity M.
Views: 33806 7activestudio
Titration introduction | Chemistry | Khan Academy
 
08:50
Introduction to acid-base titrations using example of titrating 20.0 mL of HCl of unknown concentration with 0.100 M NaOH. Covers indicators, endpoint, equivalence point, and calculating the unknown concentration. Created by Jay. Watch the next lesson: https://www.khanacademy.org/science/chemistry/acid-base-equilibrium/titrations/v/titration-calculation-example?utm_source=YT&utm_medium=Desc&utm_campaign=chemistry Missed the previous lesson? https://www.khanacademy.org/science/chemistry/acid-base-equilibrium/buffer-solutions/v/ways-to-get-a-buffer-solution?utm_source=YT&utm_medium=Desc&utm_campaign=chemistry Chemistry on Khan Academy: Did you know that everything is made out of chemicals? Chemistry is the study of matter: its composition, properties, and reactivity. This material roughly covers a first-year high school or college course, and a good understanding of algebra is helpful. About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Chemistry channel: https://www.youtube.com/channel/UCyEot66LrwWFEMONvrIBh3A?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Webinar -- Water Quality Sampling and Analysis
 
34:43
This webinar provides a review of water sampling methods and subsequent analysis for water operators, field sample technicians, and others. The presenter will be talking about equipment used, calibrating, cleaning, and maintaining instruments, common field measurements, sample collection and testing, and evaluating results. The presenter is Ernie Rector, Market Manager at the LaMotte Company in Chestertown, Maryland. Ernie began working as the Market Manager handling the Industrial, Water and Wastewater sections for the LaMotte Company in 2010. His previous experience was as a Water Operator and Laboratory Technician at a public drinking water utility for 25 years. He graduated from the Delaware Technical and Community College with an AAS in Chemistry Technology. Visit us at http://www.lamotte.com
Views: 36425 LaMotte Company
Mod-01 Lec-31 Iterative Methods for Solving Linear Algebraic Equations: Convergence Analysis
 
46:32
Advanced Numerical Analysis by Prof. Sachin C. Patwardhan,Department of Chemical Engineering,IIT Bombay.For more details on NPTEL visit http://nptel.ac.in
Views: 2814 nptelhrd
512 Lesson 10 - tour of ISU Soil and Plant Analysis Laboratory
 
12:38
Closed Captions available. From the Introduction: "Soil testing is a valuable diagnostic tool for growers. Soil testing laboratories, such as at Iowa State University, often evaluate soils for their available nutrient status, organic matter content, pH, and lime requirement..." Contents: - Receiving and recording the sample - Drying - Grinding - Extraction - Measurement - Interpretation - Summary
Views: 4421 M.S. Agronomy
Calibration Methods
 
15:04
Comparison of external standards, internal standards and standard addition method. For students of analytical chemistry and instrumental analysis.
Mod-01 Lec-16 Orthogonal Collocations Method for Solving ODE - BVPs and PDEs
 
01:03:48
Advanced Numerical Analysis by Prof. Sachin C. Patwardhan,Department of Chemical Engineering,IIT Bombay.For more details on NPTEL visit http://nptel.ac.in
Views: 11625 nptelhrd
Analysis of a Split Point
 
03:43
Analyzes a splitting point and explains why modeling this type of system is different from other types of systems. Made by faculty at Lafayette College and the University of Colorado Boulder, Department of Chemical & Biological Engineering. Check out our Material & Energy Balances playlists: https://www.youtube.com/user/LearnChemE/playlists?view=50&flow=list&shelf_id=8 Check out our website for screencasts organized by popular textbooks: http://www.learncheme.com/screencasts/mass-energy-balances Check out our website for interactive MEB simulations: http://www.learncheme.com/simulations/mass-energy-balances
Views: 7618 LearnChemE
Analytical Research on Cell Response Mechanisms Related to Diseases
 
04:25
At Keio University, the Imoto Laboratory, in the Department of Biosciences and Informatics, utilizes research methods from molecular biology and cell biology, primarily chemical biology, to analyze cell control abnormalities related to cancer and neurodegenerative disorders at the level of genes and proteins. The researchers also aim to develop low-molecular-weight compounds that could become drug leads. Q "Our research is in the field of chemical biology. Chemical biology is a research field utilizing compounds to investigate biological phenomena. For example, firstly we look for compounds that can suppress the proliferation of cancer cells, or cause cancer cells to die. When we find such compounds, we investigate why they kill cancer cells or suppress the reproduction of cancer cells, by looking for target proteins of those compounds, and identifying genes that code those target proteins, to find out how the compounds work. That's what the research method of chemical biology involves." The 60 trillion cells that make up our bodies maintain our normal biological activities through high-level control. Currently, however, much is still unknown about cell control mechanisms. Consequently, analyzing cell control mechanisms is an extremely important research topic for understanding biological phenomena. So, what is this research method like? Q "First of all, we collect microorganisms. Our lab currently has seven thousand species of microorganisms. We culture each species, to make a culture fluid. Then, we apply the culture fluid to, for example, cancer cells. In other words, we treat the cells. When we do this, we look for microbes that make cancer cells revert to a normal cell form. We culture those microbes, and we isolate the active substances they contain -- the compounds that, for example, convert cancer cells to a normal form. After generating those compounds in isolation, we analyze their structures using NMR and other spectroscopic analyses. If the structures are novel, that's a good thing, and if even some of their effects are new, we're happy. Next, we try to identify the proteins that bind to the compound in cancer cells. Once we've found such proteins, to see whether they're really related to the differences between cancer cells and normal cells, we do a gene knockdown. After checking that, we analyze the genes for those proteins. Then, we look at overexpression; for example, we check whether the cancer is actually cured, or promoted even more. Next, we do cancer control tests of those compounds in animal models, or clinical trials in patients with neurodegenerative disorders." If this research progresses, the Imoto Laboratory continues to the next stage: developing lead compounds for drugs to treat cancer and neurodegenerative disorders. Each step of the process is analogous to treasure hunting or solving puzzles. Q "The first thing we do is look for compounds that could be the seeds for drugs. That really is a treasure hunt. Another aspect of our work is finding out why those compounds have medicinal effects, by analyzing their mechanisms. That's like solving puzzles. Treasure hunting and puzzle solving are very exciting fields of research. So, I hope students will be enthusiastic, and of course, I hope they'll study the basic prerequisites. This is a field that people can be passionate about, so we'll be glad if students participate in this research with us."
Phosphorus Bray Extraction
 
05:38
See http://soilweb.landfood.ubc.ca/labmodules/ Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Rust : Prevention and treatment | Chemistry for All | The Fuse School
 
04:51
Learn the basics about Rust, it's prevention and treatment. What causes rust? Why do only metals rust? How do you prevent rust? Find out more in this video! This Open Educational Resource is free of charge, under a Creative Commons License: Attribution-NonCommercial CC BY-NC ( View License Deed: http://creativecommons.org/licenses/by-nc/4.0/ ). You are allowed to download the video for nonprofit, educational use. If you would like to modify the video, please contact us: [email protected] SUBSCRIBE to the Fuse School YouTube channel for many more educational videos. Our teachers and animators come together to make fun & easy-to-understand videos in Chemistry, Biology, Physics, Maths & ICT. This video is part of 'Chemistry for All' - a Chemistry Education project by our Charity Fuse Foundation - the organisation behind The Fuse School. These videos can be used in a flipped classroom model or as a revision aid. Find our other Chemistry videos here: https://www.youtube.com/playlist?list=PLW0gavSzhMlReKGMVfUt6YuNQsO0bqSMV Twitter: https://twitter.com/fuseSchool Access a deeper Learning Experience in the Fuse School platform and app: www.fuseschool.org Follow us: http://www.youtube.com/fuseschool Friend us: http://www.facebook.com/fuseschool
12. Thin Films: Material Choices & Manufacturing, Part I
 
01:09:25
MIT 2.627 Fundamentals of Photovoltaics, Fall 2011 View the complete course: http://ocw.mit.edu/2-627F11 Instructor: Tonio Buonassisi This lecture introduces thin film solar technologies: generic advantages and disadvantages, device structures and performance, fabrication by vapor deposition, and market issues. The lecture ends with with a look at cadmium telluride (CdTe). License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 23453 MIT OpenCourseWare
Instrumental Analysis: week 2 - Demo  ICP AES or OES in the lab
 
03:48
Instrumental Analysis course for Dr/ VICKI COLVINE Course content : Error, calibration, QA/QC Spectroscopy: Atomic Mass Spectrometry Chromatography Spectroscopy: Infrared Electrochemical Sensors - English sub. http://www.mediafire.com/download/za77uafqubfqidc/week_2__english_sub..rar - week 1 resourses http://www.mediafire.com/download/uy9aru2p0zx2wb7/week_2_resourses.rar
Views: 22968 Ahmed Sadek
Spectroscopy Basics - Magic Marks
 
02:09
Basics of Spectroscopy: This video explain the basics of spectroscopy with the help of live example. The Video content is a copyright of Dragonfly Masterclass, an education company providing animated & visual based courseware to engineering institutions. Our channel gives a glimpse of the various modules provided in our courseware. Watch engineering come alive from those text books! Video after Video, learn with us, visually. Subscribe to keep learning the SMART way! http://www.youtube.com/subscription_center?add_user=dragonflyeducation Like us on Facebook https://www.facebook.com/magicmarks/ Send a tweet to friends https://twitter.com/magicmrks Website: http://www.magicmarks.in
Views: 112322 Magic Marks
Chemical Analysis
 
07:35
Chem 20
Views: 136 Lindsay Rous
Psychological Research - Crash Course Psychology #2
 
10:51
Want more videos about psychology every Monday and Thursday? Check out our sister channel SciShow Psych at https://www.youtube.com/scishowpsych! So how do we apply the scientific method to psychological research? Lots of ways, but today Hank talks about case studies, naturalistic observation, surveys and interviews, and experimentation. Also he covers different kinds of bias in experimentation and how research practices help us avoid them. -- Table of Contents The Scientific Method 2:06 Case Studies 3:05 Naturalistic Observation 3:48 Surveys and Interviews 4:15 Experimentation 6:35 Proper Research Practices 8:40 -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 3068195 CrashCourse
9.1 Winkler Experiment for Dissolved Oxygen (Chemical equations too) [SL IB Chemistry]
 
15:04
Cartoon, actual experiment then chemical calculation and explanation
Views: 94235 Richard Thornley
Thin-Layer Chromatography (TLC)
 
10:17
Fundamentals of the TLC Method
Views: 523115 CapilanoUChemlab
Fecal Floatation Video
 
03:55
How to properly float a fecal sample and prepare it for analysis.
Views: 44397 Matt Porter
Introduction to Degrees of Freedom
 
08:34
Explains how to calculate degrees of freedom and performs two examples on single unit processes. Made by faculty at Lafayette College and produced by the University of Colorado Boulder, Department of Chemical & Biological Engineering. Check out our Material & Energy Balances playlists: https://www.youtube.com/user/LearnChemE/playlists?view=50&flow=list&shelf_id=8 Check out our website for screencasts organized by popular textbooks: http://www.learncheme.com/screencasts/mass-energy-balances Check out our website for interactive MEB simulations: http://www.learncheme.com/simulations/mass-energy-balances
Views: 41703 LearnChemE
Colorimetric measuring principle
 
03:34
Nutrients, metals or carbon components in a liquid can be measured using the colorimetric measuring principle with or without digestion. This video shows what it is about and how this measuring principle work. www.endress.com/analysis
Views: 57494 Endress+Hauser
Total Organic Carbon Analysis
 
05:14
Views: 12281 Bob Burk
Analasys of Flue gases by Orsat method
 
04:20
Orsat method by H&S Department from Laqshya Institute of Technology & Science
Soil Test - pH and NPK Nitrogen Phosphorus and Potassium
 
04:54
Visit http://www.jandjacres.net for more hobby farm activities. The results were - in a word - terrible. In two words, heart wrenching. In interpreting the results, the chart that came with my soil tester says I need to add the following pounds per 100 square foot of these nutrients: (N) Nitrogen: .64 (P) Potassium: .13 (K) Phosphorus: .28 This translates roughly in to a ratio of: N -5 P - 1 K - 2 I have found an organic fertilizer with the ratio of 7-1-2. Should I apply this organic fertilizer or is there something I can use that is on our property to fix the issue?
Views: 75647 J&J Acres
Centrifugation - MeitY OLabs
 
02:59
This video channel is developed by Amrita University's CREATE http://www.amrita.edu/create ▶ For more Information @ http://amrita.olabs.edu.in/?sub=73&brch=2&sim=96&cnt=1 ▶ Online Labs for School lab Experiments (Olabs) http://www.olabs.edu.in/ ▶ Learn more about Amrita University http://www.amrita.edu ▶ Subscribe @ http://www.youtube.com/amritacreate https://www.facebook.com/onlinelabs Copyright © 2013 Amrita University Developed by CDAC Mumbai & Amrita University under research grant from Department of IT, Government of India Centrifugation :- Sometimes the solid particles in a liquid are very small and pass through a filter paper. For such particles the filtration technique cannot be used for separation. Such mixtures are separated by centrifugation. So centrifugation is the process of separation of insoluble materials from a liquid where normal filtration does not work well. This video explains how to separate cream from milk.
Views: 60316 amritacreate
5-Urine Chemical Examination
 
11:44
Reagents for Urine Experiments , Dumm and Shipley https://www.mediafire.com/folder/f2hc990cp023n/Urine_Chemical_Examination
Views: 18697 Abdullah Punjabi
Mod-01 Lec-16 ARC Length and Gradient Based Methods
 
55:08
Numerical Methods in Civil Engineering by Dr. A. Deb,Department of Civil Engineering,IIT Kharagpur.For more details on NPTEL visit http://nptel.ac.in
Views: 2820 nptelhrd
AQA A-Level Chemistry - Organic Analysis
 
19:35
This video runs through the analytical techniques portion of the AQA Unit 2 spec. It DOES NOT go into huge detail about the process of mass spectrometry and IR spectroscopy as this is not required for the exam!
Views: 64332 Eliot Rintoul
Soil Sample Preparation
 
05:05
See http://soilweb.landfood.ubc.ca/labmodules Sample preparation and storage depend on the type of samples and the desired analysis. It is best to always check with the laboratory technicians who will be doing the sample analysis to find out what is required in terms of sample processing, transport, and storage. Preparation of air-dried, less than 2 mm samples is standard for many nutrient analysis. Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Atomic Absorption Spectroscopy Quantitative Analysis
 
10:59
See more videos at: http://talkboard.com.au/ In this video, we will look at how data obtained from AAS can be utilised, along with standard solutions, to find the concentration of a given substance.
Views: 50014 talkboard.com.au
Analysis of Pesticides in Beer and Wine
 
48:43
There are hundreds of commercial pesticides in use in industrial and private agriculture. The concern over human pesticide exposure over the past few decades has led to the monitoring of these pesticides. In this study, commercial red wine and beer samples were examined for their pesticide concentrations. In addition to the examination of the finished alcoholic beverage, the constituent agriculture products of wine and beer production (grains, malts hops and wine grapes) were also examined to determine the levels of pesticides found in those products. The sample preparation and extraction process were examined by processing samples using manual versus high-throughput techniques. The QuEChERS method was used to process a greater number of samples in a shorter period of time than other extraction methods. Topics of discussion during the webinar include: • Sample preparation • Improving efficiency and accuracy with High throughput techniques • Use of QuEChERS with a variety of types of agricultural products Download the slides from http://www.spexcertiprep.com/news-and-events/news.aspx?id=235
Views: 1966 SPEX CertiPrep
Method of Standard Addition with Excel
 
13:35
How to use the the method of standard addition in Excel - this video is based on the description provided in Harris Quantitative Chemical Analysis Chapter 5.
Views: 22575 Robert LeSuer
Converting Between Grams and Moles
 
10:47
We'll learn how to convert back and forth between grams and moles. For each example, we'll do it two ways. First, a thinking through it approach, that shows how you multiply moles by the molar mass to convert from moles to grams, and how you divide grams by the molar mass to convert from grams to moles. Second, we'll use a conversion factor method where we write units based on molar mass information, and set up fractions to correctly cancel the units. For part two, check out the video http://youtu.be/0RXB8xNmJNM
Views: 1187013 Tyler DeWitt
Solvent Extraction Technique
 
04:53
VOL OIL APP AROMA ( 3315716 ) Department of Pharmacognosy & Pharmaceutical Botany Faculty of Pharmaceutical Sciences Chulalongkorn University
Views: 13659 chayapol tungphatthong
Extraction of Antioxidants from Plants
 
01:53
Dr. Jonathan Wenzel speaks about the chemical engineering behind extracting antioxidants from plants.
Views: 4056 Kettering University
Antibody Labeling Webinar: Antibody conjugation methods - which one is best for you?
 
25:22
Nick Gee, the CEO and CSO of Innova Biosciences, explains the benefits of using directly conjugated antibodies and the various approaches and techniques that researchers can use to make these tools in their own labs. Webinar topics include: 1. Why conjugate your antibody? 2. What are the main chemical approaches? 3. Is there a 'best' method? 4. What technical skills do you need? 5. Why is Lightning-Link unique? 6. Benefits and applications This video was produced by Innova Biosciences which is now fully integrated with Expedeon Ltd. - If you want to learn more about the Lightning-Link® product range, please visit: https://bit.ly/2N3E8jL
Views: 17799 Expedeon
Intro to Psychology - Crash Course Psychology #1
 
10:54
Want more videos about psychology every Monday and Thursday? Check out our sister channel SciShow Psych at https://www.youtube.com/scishowpsych! What does Psychology mean? Where does it come from? Hank gives you a 10 minute intro to one of the more tricky sciences and talks about some of the big names in the development of the field. Welcome to Crash Course Psychology!!! -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Subbable: http://subbable.com/crashcourse
Views: 7330555 CrashCourse
Mod-01 Lec-03 Vectors and Tensors
 
01:00:00
Fundamentals of Transport Processes - II by Prof. V. Kumaran,Department of Chemical Engineering,IISc Bangalore.For more details on NPTEL visit http://nptel.ac.in
Views: 63795 nptelhrd
Hazard, Risk & Safety - Understanding Risk Assessment, Management and Perception
 
05:31
(subtitles available in English, French, Dutch, Spanish, Chinese and Russian, German, and a French version is available here: https://youtu.be/wRmfvFYDNr8) Hazard, Risk & Safety Danger, risques et sécurité Gevaar, risico's en veiligheid Peligro, riesgo y seguridad Опасность, риск и безопасность Gefahr, Risiko und Sicherheit We all hear these terms on a daily basis. So and so a chemical, physical or a biological agent poses a risk; This or that product is a hazard or behaving a certain way is unsafe. A lot of the time “hazard” and “risk” are freely used to mean the same thing. However they are not. Hazard is the potential to cause harm. Risk on the other hand is the likelihood of harm in defined circumstances. In a nutshell, hazard and risk are not always aligned as the risk depends on the exposure to the hazard ; similarly, risk, safety and perception of risk are not always aligned; this can make political decisions regarding safety levels difficult to make, in these cases it is especially important to base them on facts rather than on subjective perceptions. http://www.greenfacts.org
Views: 362737 GreenFacts.org
Introduction to Process Hazard Analysis using HAZOP
 
47:42
This webinar covers the HAZOP methodology in the context of the overall process safety management lifecycle. It first provides a high level overview of the process hazards analysis (PHA) work process, detailing process safety management (PSM) expectations for the PHA. Process safety information is covered, explaining how it is needed in order to conduct the review and management of change (MOC) is shown in the overall PHA work process to illustrate the relationship between PHA and MOC. With the foundation set, details of the HAZOP methodology, including report documentation are presented.
Views: 14183 exidaLLC
Two Reactions (Extent of Reaction Method)
 
10:54
Example with two reactions, one desired and one undesired, occurring in a reactor. Calculates reactant conversion, yield, selectivity, and percent excess. Made by faculty at the University of Colorado Boulder, Department of Chemical & Biological Engineering. Reviewed by faculty from other academic institutions. Check out our Material & Energy Balances playlists: https://www.youtube.com/user/LearnChemE/playlists?view=50&flow=list&shelf_id=8 Check out our website for screencasts organized by popular textbooks: http://www.learncheme.com/screencasts/mass-energy-balances Check out our website for interactive MEB simulations: http://www.learncheme.com/simulations/mass-energy-balances
Views: 21648 LearnChemE
Introduction to infrared spectroscopy | Spectroscopy | Organic chemistry | Khan Academy
 
09:25
Basic principles of spectroscopy. Light absorption and bond vibration. Created by Jay. Watch the next lesson: https://www.khanacademy.org/science/organic-chemistry/spectroscopy-jay/infrared-spectroscopy-theory/v/bonds-as-springs?utm_source=YT&utm_medium=Desc&utm_campaign=organicchemistry Organic Chemistry on Khan Academy: Carbon can form covalent bonds with itself and other elements to create a mind-boggling array of structures. In organic chemistry, we will learn about the reactions chemists use to synthesize crazy carbon based structures, as well as the analytical methods to characterize them. We will also think about how those reactions are occurring on a molecular level with reaction mechanisms. Simply put, organic chemistry is like building with molecular Legos. Let's make some beautiful organic molecules! About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Organic Chemistry channel: https://www.youtube.com/channel/UCNKPjijOc0WEJ7DIV_Vay3g?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Mod-01 Lec-25 Solving Linear Algebraic Equations and Methods of Sparse Linear Systems
 
53:12
Advanced Numerical Analysis by Prof. Sachin C. Patwardhan,Department of Chemical Engineering,IIT Bombay.For more details on NPTEL visit http://nptel.ac.in
Views: 1131 nptelhrd
Physical & Chemical Properties Analysis Seminar - Konica Minolta Sensing
 
02:48
Learn More at :http://sensing.konicaminolta.us/ Seminar Details:http://sensing.konicaminolta.us/events/workshops-and-seminars/mettler-toledo-workshop/ Join Konica Minolta Sensing Americas and Mettler Toledo for an exclusive seminar discussing the analysis of color, density, refractive index, and pH levels. This educational seminar will enhance each guest’s knowledge of evaluating a sample’s physical and chemical properties through an efficient and streamlined process to produce high quality products.
Osman Bakr - Physical & Chemical Characterization of Nanoparticle Constructs ...
 
55:53
Watch on LabRoots at http://labroots.com/user/webinars/details/id/313 Colloidal nanoparticles have become important materials in biomedicine, catalysis, and optoelectronics. Their unique nanoscale properties stem from their size (particularly of the inorganic particle core) and surface composition of their organic ligand-shell. Given the polydispersity of nanoparticles, and complex composition, no technique other than Analytical Ultracentrifugation (AUC) has the potential to provide detailed information on the overall particle size, density, molecular weight and aggregation state in solution. While AUC has become a standard tool for bioscientists to quantitatively study the size, confirmation, and interaction of macromolecules and proteins in solution for many decades, it has not had the same success with nanoparticles. Unlike nanoparticles, most proteins have a well-known partial specific volume, and hence it’s straightforward to convert quantities measured from AUC, such as the sedimentation coefficients, into parameters that provide physical insights into the macromolecule, such as frictional ratio (i.e. shape) and molecular weight. Recent advancements in the mathematical modeling of the sedimentation boundaries have enabled the parameterization of the sedimentation and diffusion coefficients of all the species detected in solution during centrifugation in terms of their partial specific volume and molecular weight. This advancement opens the door to quantitative investigation of most nanoparticle systems by AUC - without a priori knowledge of their partial specific volume - since most nanoparticles have a constant shape which can be assessed by electron microscopy. In this tutorial webinar I will introduce some of the latest methods and procedures to analyze nanoparticles in solution with AUC. I will also provide insights on avoiding common experimental challenges that researchers face when studying nanoparticles with the AUC, which may lead to artifacts in the experimental data.
Views: 1841 LabRoots
Fragmentation Methods: Bridging the Gap between Quantum Chemistry and Large Systems
 
33:26
Talk from The Frontiers in Computational Chemistry International Workshop --------------------------------- Fragmentation Methods: Bridging the Gap between Quantum Chemistry and Large Systems Xiao HE East China Normal University Routine quantum mechanical (QM) calculation on macromolecules is still a formidable task in computational chemistry and biology. The major computational limitation of QM methods is the scaling problem, since the cost of ab initio calculation scales n-th power or even worse with the system size. In the past decade, the fragmentation approach based on the chemical locality has become one of the central focuses in developing linear-scaling QM method for large systems. The attractive aspect of fragmentation approach is that it can be highly parallelized on massive computer nodes and also applied to all levels of ab initio electronic structure theories with a minimum of development efforts. In my talk, two fragmentation methods and their applications to macromolecules will be discussed. They are the electrostatically embedded generalized molecular fractionation with conjugate caps (EE-GMFCC) method and automated fragmentation quantum mechanics/molecular mechanics (AF-QM/MM) approach. The EE-GMFCC method is developed from the MFCC approach, which was initially aimed to obtain accurate protein-ligand QM interaction energy. By introducing the electrostatic embedding field in each fragment calculation and two-body interaction energy correction on top of the MFCC approach, the EE-GMFCC method is capable of accurately reproducing the QM molecular properties (such as the dipole moment, electron density and electrostatic potential), total energy and electrostatic solvation energy from full system calculations for proteins. On the other hand, the AF-QM/MM was aimed for efficient QM calculation of protein NMR parameters including chemical shift, chemical shift anisotropy tensor and spin-spin coupling constant. In the AF-QM/MM approach, each amino acid and all the residues in its vicinity are automatically assigned as the QM region through a distance cutoff for each residue-centric QM/MM calculation. Local chemical properties of central residue can be obtained from individual QM/MM calculation. The AF-QM/MM approach precisely reproduces the NMR chemical shifts of proteins in gas phase from full system QM calculations. Furthermore, by incorporating implicit and explicit solvent models, the protein NMR chemical shifts calculated by the AF-QM/MM method are in excellent agreement with experimental values. The applications of the AF-QM/MM method may also be extended to more general biological systems such as DNA/RNA and protein-ligand complexes.

My teacher hero essay 250 words about the flags
Layout of essay book review
Essay writing comics
Free fort sumter essay
Phyletic classification definition essay