... database, and the type discussed here, is a relational database A relational database is a collection of tables with relationships A database is designed to describe a situation A situation is a ... hoc data management tasks are performed on data that is already in the database Most of the analyses for LCTA are based on the data that are found in the installation database, thus, this task ... year of data collection a total of 42,822 pages would have accumulated This equates to 85.65 reams of paper or a stack of paper that would stand 14.27 feet Unfortunately there is no automatic tool...
Ngày tải lên: 16/03/2014, 16:20
... transition of Lotus Engineering to a new CATIA V5/Delmia/Smarteam CAD installation Anthony Baxendale is Head of Advanced Engineering and Innovation at MIRA Ltd, a leading UK automotive design engineering ... Equally, this linkage appears to provide the company with a significant base load of work Customers include major automakers such as GM, Ford, DC, Honda and Nissan, and also aerospace manufacturers ... key milestones that go towards delivering programmes successfully Their CAD capability covered all the major software platforms such as Alias, CATIA V4 and V5, and Unigraphics CAD data management...
Ngày tải lên: 28/04/2014, 11:11
A Practical Introduction to Structure, Mechanism, and Data Analysis - Part 2 pptx
... substance that can act as an electron pair acceptor, and a L ewis base is any substance that can act as an electron pair donor In many enzymatic reactions, protons are transferred from one chemical ... Potential energy diagram for the van der Waals attraction between two helium atoms [Data adapted from Gray (1973) and fit to Equation 2.14.] by a critical distance known as the van der Waals contact ... the atom Table 2.4 provides the van der Waals radii for the most abundant atoms found in proteins Imagine drawing a sphere around each atom with a radius defined by the van der Waals contact radius...
Ngày tải lên: 13/08/2014, 07:20
A Practical Introduction to Structure, Mechanism, and Data Analysis - Part 3 pot
... cysteine residues Another example of covalent cofactor incorporation is the pyridoxal phosphate cofactor of the enzyme aspartate aminotransferase Here the cofactor is covalently linked to the protein ... nonequivalent ligand binding sites The data and fit to Equation 4.27 are the same as for Figure 4.5 in all fields put a great deal of emphasis on finding mathematical transformations of data that would ... wishes to compare the affinities of a number of ligands for a particular receptor For example, given a natural ligand for a receptor (e.g., a substrate for an enzyme), one may wish to design nonnatural...
Ngày tải lên: 13/08/2014, 07:20
A Practical Introduction to Structure, Mechanism, and Data Analysis - Part 4 ppsx
... of a typical chromatographic run for an HDC experiment From generation of a standard curve (i.e., signal as a function of known concentration of ligand), the signal units can be converted into ... noncovalently associated as a multiprotein complex This supercomplex, referred to as CAD, comprises the enzymes carbamyl phosphate synthase, aspartate transcarbamylase, and dihydroorotase Because the active ... EXPERIMENTAL MEASUREMENT OF kcat AND Km 129 Figure 5.7 Experimental strategy for estimating Km and Vmax (A) A limited data set is collected over a broad range of [S] to get a rough estimate of the...
Ngày tải lên: 13/08/2014, 07:20
A Practical Introduction to Structure, Mechanism, and Data Analysis - Part 5 docx
... protonation, appears to ? be a dominant factor Studies of the rates of catalysis by a common nucleophile on a series of leaving groups demonstrate a clear correlation between rate of attack and ... is a required cofactor for the majority of enzymes catalyzing chemical reactions at the alpha, beta, and gamma carbons of the -amino acids (Chapter 3) CHEMICAL MECHANISMS FOR TRANSITION STATE ... CHEMICAL MECHANISMS FOR TRANSITION STATE STABILIZATION 155 Approximation (i.e., proximity) of reactants Covalent catalysis General acid—base catalysis Conformational distortion Preorganization of...
Ngày tải lên: 13/08/2014, 07:20
A Practical Introduction to Structure, Mechanism, and Data Analysis - Part 6 pot
... recommended names, alternative names, catalytic activities, information on cofactor utilization, and associated diseases for a very large collection of enzymes A complete description of the data bank and ... noise and having a reasonable signal to Figure 7.10 Deviation from Beer’s law Over a small concentration range, the absorption at some analytical wavelength tracks linearly with analyte concentration, ... absorption of as little as 0.001) and can greatly increase productivity by allowing up to 96 samples to be assayed simultaneously Most plate readers are based on optical filters rather than monochromators,...
Ngày tải lên: 13/08/2014, 07:20
A Practical Introduction to Structure, Mechanism, and Data Analysis - Part 7 pdf
... the peak as a function of mass for a standard sample of the analyte of interest Let us again use the reaction of dihydroorotate dehydrogenase as an example Both the substrate, dihyroorotate, and ... commonly used alternative methods are available to quantify peaks from strip-chart recordings The first is to measure the peak height rather than integrated area as a measure of analyte mass This is ... details of the separation being attempted SEPARATION METHODS IN ENZYME ASSAYS 227 Figure 7.16 Autoradiograph of a TLC plate demonstrating separation of 14C-labeled dihydroorotate and orotic acid,...
Ngày tải lên: 13/08/2014, 07:20
A Practical Introduction to Structure, Mechanism, and Data Analysis - Part 8 docx
... to the rate of enzyme turnover and have overall dissociation constants that are large in comparison to the total concentration of enzyme present We are able to analyze the interactions of these ... structure of the reaction transition state 298 REVERSIBLE INHIBITORS This approach has been applied to the design of transition state analogues of renin, an aspartyl protease (Blundell et al., 1987) ... novo design of transition state analogues as enzyme inhibitors has been applied only to a limited number of enzymes by a handful of laboratories With improvements in the computational methods associated...
Ngày tải lên: 13/08/2014, 07:20
A Practical Introduction to Structure, Mechanism, and Data Analysis - Part 9 ppt
... inhibitors of dihydrofolate reductase (as anticancer drugs), inhibitors of the HIV aspartyl protease, (as anti-AIDS drugs), and inhibitors of metalloproteases (as potential cartilage protectants) ... Biochem Pharmacol 24, 2187 Copeland, R A (1994) Methods of Protein Analysis, A Practical Guide to L aboratory Protocols, Chapman & Hall, New York Copeland, R A. , Lombardo, D., Giannaras, J., and DeCicco, ... nucleophile Several groups have taken advantage of the ability of boron to adopt a tetrahedral ligand sphere in preparing transition state analogues as inhibitors of serine proteases Kettner and Shervi...
Ngày tải lên: 13/08/2014, 07:20
A Practical Introduction to Structure, Mechanism, and Data Analysis - Part 10 doc
... inhibitor of threonine deaminase Another classic example of feedback inhibition comes from aspartate carbamoyltransferase This enzyme catalyzes the formation of carbamoylaspartate from aspartate and ... sampling of what is available The material is provided for the convenience of the reader; I make no claims as to the quality or accuracy of the programs COMPUTER SOFTWARE Cleland’s Package of Kinetic ... kinetic data Reference: F W Perrella, Anal Biochem 174, 437 (1988) Graphfit A commercial package for data management and graphic display of enzyme kinetic data and other scientific data graphing...
Ngày tải lên: 13/08/2014, 07:20
Optimal design of PEM fuel cells to generate maximum power: A CFD study
... The material parameters, cell design, and cell operating conditions that give optimal performance depend on the application area Stationary, portable, and transportation applications all have ... the base case operating conditions are taken from reference [2] and are listed in Table Table Geometrical and operational parameters for base case conditions Parameter Channel length Channel ... model has been performed and discussed in detail The study quantifies and analyses the impact of operating, design, and material parameters on fuel cell performance and get an optimal design...
Ngày tải lên: 05/09/2013, 14:58
Báo cáo khoa học: Investigations into the ability of an oblique a-helical template to provide the basis for design of an antimicrobial anionic amphiphilic peptide pot
... centrally located in the apolar face of the AP1 a- helix, and previous studies have shown that similarly located glutamate residues are important for the antimicrobial action of other a- AMPs also ... of action of linear amphipathic alpha helical antimicrobial peptides Biopolymers 47, 451463 48 Tytler EM, Segrest JP, Epand RM, Nie SQ, Epand RF, Mishra VK, Venkatachalapathi YV & Anantharamaiah ... is Avogadros number (Table 1) The ability of AP1 to spread on an aqueous surface and to form a stable monolayer was investigated The barriers of the Langmuir-Blodgett trough were adjusted to...
Ngày tải lên: 07/03/2014, 12:20
Báo cáo khoa học: Hepatocyte growth factor activator (HGFA): a serine protease that links tissue injury to activation of hepatocyte growth factor pdf
... Miyazawa K, Tsubouchi H, Naka D, Takahashi K, Okigaki M, Arakaki N, Nakayama H, Hirono S, Sakiyama O, Takahashi K et al (1989) Molecular cloning and sequence analysis of cDNA for human hepatocyte ... Sakiyama O, Takahashi K, Miyazaki H, Hashimoto S & Daikuhara Y (1988) Purification and partial characterization of hepatocyte growth factor from plasma of a patient with fulminant hepatic failure J ... growth factor activator K Miyazawa agonist ⁄ antagonist activity J Biol Chem 271, 13110– 13115 31 Kaibori M, Inoue T, Sakakura Y, Oda M, Nagahama T, Kwon AH, Kamiyama Y, Miyazawa K & Okumura T (2002)...
Ngày tải lên: 15/03/2014, 11:20
báo cáo hóa học: "Design of a complex virtual reality simulation to train finger motion for persons with hemiparesis: a proof of concept study" docx
... combines training of the hand and arm into an integrated task-based simulation This unique training modality is practical and accommodates and safely challenges subjects with a range of hand impairments ... feedback is both intrinsic and meaningful to the task of piano playing in this simulation Adding haptic feedback to auditory and visual feedback has been identified as an important adjunct to skill ... collection, and data analysis and manuscript revision processes GGF participated in the study design, subject recruitment, data collection, data analysis, initial manuscript preparation and manuscript...
Ngày tải lên: 19/06/2014, 08:20
Báo cáo hóa học: "Research Article A Novel Approach to the Design of Oversampling Low-Delay Complex-Modulated Filter Bank Pairs" doc
... EURASIP Journal on Advances in Signal Processing delay can always be obtained that ranges below the group delay of a corresponding LP FIR filter However, the absolute minimum value of the passband ... passband and the transition bands As the objective function to be minimised we adopt a particular representation of the group delay [20], while the stopband magnitude specifications of the prototype ... coefficients as close as possible to a ideal delay In this contribution, a new iterative approach for the design of analysis and synthesis prototype filters of oversampling uniform complex-modulated FIR...
Ngày tải lên: 21/06/2014, 19:20
Báo cáo hóa học: "Research Article Design of a Versatile and Low Cost μVolt Level A to D Conversion System for Use in Medical Instrumentation Applicatio" pdf
... in this instance to provide a conventional sample and hold facility which, in the case of a hand-held instrument, allows for a “snapshot” of the data stream to be made manually at a time chosen ... the total circuit and incidental noise is random with a worstcase peak to peak spread of 3.87 mV As the negative and positive excursions are relatively uniform about a mean, EURASIP Journal on Advances ... necessary to include an appropriate calibration factor in order to provide automatic interpretation of the output pulse train and to offer a direct readout in the numerical units desired In the case...
Ngày tải lên: 22/06/2014, 01:20
Báo cáo hóa học: " Application of Evolution Strategies to the Design of Tracking Filters with a Large Number of Specifications" potx
... Complex and Adaptive Laboratory, involved in artificial intelligence applications His main interests are radar data processing, navigation, and air traffic management, with special stress on data fusion ... transversal maneuver, and a second transition to come back to uniform motion When the target is far enough from the radar, a pure radial approach to the radar leads to the worst case for transversal ... and after maneuver segments (CV1 and CV2), and maximum RMSE during maneuver (PV) The design of a tracking filter aims at attaining a satisfactory trade-off among all specifications The quality of...
Ngày tải lên: 23/06/2014, 00:20
báo cáo khoa học: "Marketing depression care management to employers: design of a randomized controlled trial" doc
... number from a random numbers table created by the principal investigator at a centralized location blinded to all company names Each participating employer is matched to another participating employer ... indicator of high quality care Clinical effectiveness of DMW Care Organizational effectiveness of DMW Obtaining HEDIS indicators for outpatient depression management DMW Calculator Description of ... mental healthcare While causal evidence is lacking, a study reports that these plan characteristics are associated with better HEDIS indicators for antidepressant medication management [26] Because...
Ngày tải lên: 10/08/2014, 10:22