nuclear magnetic resonance approaches to characterize
Nuclear Magnetic Resonance 2 doc
... Guarna, E O Occhiato, L M Spinetti, M E Vallecchi, and D Scarpi, Tetrahedron, 51, 1775-1788 (1995) 19F Quantitative Analysis: TFA Salt Stoichiometry Solid-state Nuclear Magnetic Resonance NMR ... Briefly describe the current AFM-derived devices used to detect electron spins What advances need to be made to take the technique forward to nuclear spins? 14 ... molecules reorient and diffuse quickly, leading to narrow isotropic resonances In solids, the fixed orientation of individual crystallites leads to a range of resonance frequencies for anisotropic interactions...
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Nuclear Magnetic Resonance 1 pot
... nucleons (protons and neutrons) inside the atomic nucleus This little electromagnet has a magnetic moment (J T-1) – The magnetic moment is proportional to the current flow through the nuclear loop” ... things of interest to chemists… History of NMR 1920-1930: physics begins to grasp the concepts of electron and nuclear spin 1936: C J Gorter (Netherlands) attempts to study 1H and ... Electromagnetic Spectrum NMR, MRI EPR/ESR What is NMR? NMR is an experiment in which the resonance frequencies of nuclear magnetic systems are investigated NMR always employs some form of magnetic...
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Báo cáo khoa học: "Proton nuclear magnetic resonance spectroscopy based investigation on propylene glycol toxicosis in a Holstein cow" potx
... of three cows resembling PG toxicosis and the present study aimed to investigate the metabolites responsible for PGinduced toxicosis using proton nuclear magnetic resonance (NMR) spectroscopy ... abnormally to PG was characterized by lower intensities of signals assigned to isopropanol and isobutyrate (1.17 ppm), βhydroxybuturate (1.22 ppm), acetate (1.93 ppm), acetone (2.22 ppm) and acetoacetate ... line-broadening function of 0.3 Hz was applied to the free induction decay (FID) prior to Fourier transformation (FT) All spectra were referenced to the TSP signal at ppm To aid spectral assignment 2D 1H-1H...
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Nuclear magnetic resonance spectroscopy (NMR)
... 1H-1H COSY Đây loại phổ cho biết mối tương quan proton-proton với nhau: proton gem (germinal, hai proton gắn cacbon); proton vic (vicinal, hai proton gắn hai cacbon kề nhau) 2.2 Phổ 1H-13C HETCOR ... ghép cặp Giả sử có n số proton tương đương Ha kề bên m số proton tương đương Hb hai proton ghép từ phổ 1H-NMR thấy proton Ha cho tín hiệu mũi đa, có tất m+1 mũi; proton Hb cho tín hiệu mũi đa, ... trình bày sau) Do hai proton ghép từ nên khoảng cách mũi đa tín hiệu hai loại proton Khoảng cáh gọi số ghép (coupling constant), ký hiệu J đơn vị Hz Cách biểu diễn proton Ha, Hb ghép từ với J...
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Magnetic Resonance Angiography Basics to Future Edited by Wael Shabana potx
... to Practical Protocols 1st ed Lippincott Williams & Wilkins, December 14 22 Magnetic Resonance Angiography Basics to Future Lima, João A C, and Milind Y Desai 2004 “Cardiovascular magnetic resonance ... vital interest to image the vascular anatomy The MRA can be classified to time of flight (TOF) and phase contrast MRA [5] In TOF MRA the blood flow is assumed to be perpendicular to the plane of ... Introduction Contrast-enhanced Magnetic Resonance Angiography (CR-MRA) is remarkable technique to image the vascular system from head to toe in diagnostic imaging armoury Computed tomography is still an...
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Báo cáo y học: "Dynamic magnetic resonance of the wrist in psoriatic arthritis reveals imaging patterns similar to those of rheumatoid arthritis" pps
... C-reactive protein, and IgM rheumatoid factor by standard laboratory methods In addition, a control group of eight healthy volunteers, who did not report any history of joint disease and were negative ... and laboratory characteristics of patients with psoriatic arthritis, rheumatoid arthritis, and controls Characteristic Psoriatic arthritis Rheumatoid arthritis (group I) Matched rheumatoid arthritis ... (range 0.5% to 14.3%) and 2.8% (range 0% to 5.1%), respectively, in 18 wrists Intraand inter observer mean percentage variation for RE were 1.9% (range 0% to 9.3%) and 1.9% (range 0.05% to 6.4%)...
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Báo cáo y học: " Impairment of chondrocyte biosynthetic activity by exposure to 3-tesla high-field magnetic resonance imaging is temporar" pptx
... normalized to the densities of the territorial/interterritorial zones RNA isolation and RT–PCR For total RNA extraction, chondrocytes were isolated from cartilage explants of 100 to 150 mg wet ... (Bio-Rad Laboratories, Hercules, CA, USA), we determined color densities of 20 randomly selected areas of both the pericellular and the territorial/ interterritorial zones on a total cartilage ... purposes) uted into 24-well plates (Costar, Cambridge, MA, USA), in quadruplicate at 100 to 150 mg of cartilage wet weight per well, for isotope incorporation assays The ratio of medium to tissue (1.5...
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Báo cáo y học: "Use of T2-weighted magnetic resonance imaging of the optic nerve sheath to detect raised intracranial pressure" pps
... ICP monitoring We therefore undertook a retrospective analysis of MRI scans in a cohort of TBI patients with ICP monitoring in order to study the relationship between ONSD and ICP and to assess ... corresponds to no visible intracranial damage on CT scan; DI category II corresponds to a midline shift of to mm; DI category III corresponds to absent or compressed cisterns, with a midline shift of to ... using a 3T Magnetom Total Imaging Matrix Trio (Siemens Medical Solutions, Munich, Germany) The axial proton density/T2-weighted turbo spinecho fat-suppressed sequence was used to measure ONSD...
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Approaches to Establish a Modeling WWTP with a Case Study in Qinghe WWTP
... the final step is to join them into the object WWTP With mathematic models brought into WWTP software, and software combined into the monitoring and control system, the monitoring and control ... still many things to to before it works in the real WWTP The mathematic models should be adjusted to real plant behavior, which means to adjust the parameters and calibrate the model to adapt the ... correspond to the sensors It also needs to some programme to achieve the data transfer from sensors or apparatus to the control system After the whole network is established, we still need to test...
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Slide an investigation into some approaches to vocabulary teaching and learning and the application of games in teaching and learning vocabulary at pre – intermediate level at foreign language center – haiphong university
... allow students to practice language skills (Lee, 1995) Games encourage learners to interact and communicate with one another When taking part in the games learners have to talk to express or ... your classmates help you to learn vocabulary through games? a b c d Help you to guess unknown words Help you to recall the words you have learnt but forgotten Help you to remember words from the ... bringing fun to classes Games can provide language practice Games encourage learners to interact and communicate with one another Games can motivate learners by bringing fun to classes Games...
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Tài liệu Community Approaches to Child Health in Malawi: Applying the Community Integrated Management of Childhood Illness (C-IMCI) Framework docx
... growth monitoring Multi-sectoral platform: Linking health efforts to those of other sectors in order to address determinants of ill health and sustain improvements in health The multi-sectoral platform ... women come together in a Care Group every two weeks to learn life-saving health messages from a health educator Each woman is then responsible to teach the health lessons they learn to 10–15 of ... Participatory research methods and community-based monitoring and evaluation efforts are important tools for communities to learn about and assume responsibility for these behaviors Ibid Community Approaches...
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Tài liệu Magnetic resonance imaging and gynecological devices doc
... artifacts is the so-called magnetic susceptibility artifact The magnetic susceptibility of a tissue showcases its capability to acquire self-magnetization when submitted to a magnetic field Such acquired ... PubMed-Medline/Ovid using the keywords Magnetic Resonance and “Intra-Uterine Device” allowed us to find three more articles related to in vitro studies carried out in order to assess the safety of performing ... substance exhibits positive magnetic susceptibility, thus strengthening the resulting magnetic field Such a substance is called paramagnetic (substances which show strong positive magnetic susceptibility...
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Tài liệu Báo cáo khoa học: Chemical approaches to mapping the function of post-translational modifications ppt
... common to organic synthesis but not yet amenable to protein modification As new methodologies emerge, the study of other PTMs and that of regulatory PTMs will hopefully provide a powerful tool for ... pastoris Nat Biotechnol 24, 210–215 Choi B-K, Bobrowicz P, Davidson RC, Hamilton SR, Kung DH, Li H, Miele RG, Nett JH, Wildt S & Gerngross TU (2003) Use of combinatorial genetic libraries to ... specific glycosylation of proteins Tetrahedron Lett 32, 6793–6796 38 Ito Y, Hagihara S, Matsuo I & Totani K (2005) Structural approaches to the study of oligosaccharides in glycoprotein quality control...
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Tài liệu A Comparison of Approaches to Large-Scale Data Analysis pdf
... required DBMS-X to be running in order to adjust them, it was unfortunately easy to lock ourselves out with no failsafe mode to restore to a previous state Vertica was relatively easy to install as ... required us to (1) write to a custom tuple object using Hadoop’s API, (2) modify our data loader program to transform records to compressed and serialized custom tuples, and (3) refactor each benchmark ... are two ways to load data into Hadoop’s distributed file system: (1) use Hadoop’s command-line file utility to upload files stored on the local filesystem into HDFS or (2) create a custom data loader...
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Tài liệu Báo cáo khoa học: Combinatorial approaches to protein stability and structure pdf
... long day), we want to be able both to understand what makes proteins ÔtickÕ and to engineer proteins with native-like properties In this review we discuss combinatorial approaches toward understanding ... function can be tied to the survival of a cell or some easy -to- observe phenotypic property Ultimately, one would like to be able to study proteins whose There is no straightforward way to identify a ... sequence resemblance to each other or to proteins known in nature [69] However, these proteins were not sufficiently soluble to be examined in vitro except as fusions to maltose binding protein...
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Tài liệu Báo cáo khoa học: Computational approaches to understand a-conotoxin interactions at neuronal nicotinic receptors doc
... subtype, thanks to the large amount of the receptor obtained from the electric organ of the Torpedo marmorata ray and availability of selective pharmacological tools like the snake a-neurotoxins The ... determinants have been mapped and a-conotoxins appear to bind mainly to loop C, but also clearly extend to microsites above this loop and on the b9b10 hairpin Indeed, a-conotoxins act at the competitive ... subtype of human [18], human D-tubocurarine–metocurine complex [19], mouse [20], mouse D-tubocurarine complex [21], torpedo ray [22,23], torpedo a-bungarotoxin complex [24], nAChR DEG-3 mutant [25],...
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Tài liệu Functional Magnetic Resonance Imaging – Advanced Neuroimaging Applications Edited by Rakesh Sharma doc
... stimulates the photoreceptors (rods and cones) These photoreceptors transform radiant energy into electrical activity, which is transmitted to retinal bipolar cells and then into retinal ganglion ... which leads to distorted vision In normal retinotopic organization, labels relate position in the distal stimulus to position upon the retina Strabismic amblyopia is thought to be due to disordered ... provides an opportunity to eliminate the need of behavioral responses to cognitive tasks However, there are many reasons to fail to observe expected activations: a patient’s neuroanatomy may have been...
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