14,576 research outputs found
Higher Efficiency In Prediction Of TIBO Activity By Evolutionary Neural Network
The treatment of acquired immunodeficiency syndrome (AIDS) is a challenging medical problem. TIBO is a nonnucleoside reverse transcriptase inhibitor, which binds non-competitively to the hydrophobic pocket on the p66 subunit of RT enzyme. We used a dataset consisting of physicochemical properties and reverse transcriptase inhibitor activities of 88 set of 4,5,6,7-tetrahydro-y-imidazo-[4,5,1-jk][1,4]-x-benzodiazepin-2-(1h)one derivatives that are variously substituted by halogens, alkyl groups. The dataset was taken from the BIOBYTE database at (www.davidhoekman.com). The concentration of the compound leading to 50% effect has been measured and expressed as IC50. The logarithm of the inverse of this parameter has been used as biological end points (log 1/C) in the QSAR studies. The evolutionary neural network (ENN) is a new system for modeling multivariate data. The strengths of ENN’s are that they can extract insignificant predictors, choose the size of the hidden layers and nodes and fine tune the parameters needed in training the network. We have used an ENN to predict the biological activities of Reverse Transcriptase Inhibitors. We have found out that Evolutionary Neural networks are better predictor of activity values than Multiple linear regression and Multilayered Perceptrons. We have calculated the correlation coefficient of each of the methods where we have found ENNs are the best
Tensors, monads and actions
We exhibit sufficient conditions for a monoidal monad T on a monoidal
category C to induce a monoidal structure on the Eilenberg--Moore category C^T
that represents bimorphisms. The category of actions in C^T is then shown to be
monadic over the base category C.Comment: v4: Minor corrections; added dedicatio
In-silico Predictive Mutagenicity Model Generation Using Supervised Learning Approaches
With the advent of High Throughput Screening techniques, it is feasible to filter possible leads from a mammoth chemical space that can act against a particular target and inhibit its action. Virtual screening complements the in-vitro assays which are costly and time consuming. This process is used to sort biologically active molecules by utilizing the structural and chemical information of the compounds and the target proteins in order to screen potential hits. Various data mining and machine learning tools utilize Molecular Descriptors through the knowledge discovery process using classifier algorithms that classify the potentially active hits for the drug development process.

Whole-grain foods and chronic disease: evidence from epidemiological and intervention studies
Cereal-based foods are key components of the diet and they dominate most food-based dietary recommendations in order to achieve targets for intake of carbohydrate, protein and dietary fibre. Processing (milling) of grains to produce refined grain products removes key nutrients and phytochemicals from the flour and although in some countries nutrients may be replaced with mandatory fortification, overall this refinement reduces their potential nutritional quality. There is increasing evidence from both observational and intervention studies that increased intake of less-refined, whole-grain (WG) foods has positive health benefits. The highest WG consumers are consistently shown to have lower risk of developing CVD, type 2 diabetes and some cancers. WG consumers may also have better digestive health and are likely to have lower BMI and gain less weight over time. The bulk of the evidence for the benefits of WG comes from observational studies, but evidence of benefit in intervention studies and potential mechanisms of action is increasing. Overall this evidence supports the promotion of WG foods over refined grain foods in the diet, but this would require adoption of standard definitions of 'whole grain' and 'whole-grain foods' which will enable innovation by food manufacturers, provide clarity for the consumer and encourage the implementation of food-based dietary recommendations and public health strategies
A Study of Light Mesons on the Transverse Lattice
We present results from a study of light meson spectra and structure obtained
within the framework of light-front QCD formulated on a transverse lattice. We
discuss how imposing Lorentz covariance conditions on meson dispersion
relations allows determination of parameters in the transverse lattice
Hamiltonian. The pion distribution amplitude obtained in this framework is
rather close to its asymptotic shape.Comment: 41 pages, sprocl.sty, corrected typos, added more results, added
another section on comments and comparison
Equipping Children and Pre–Teens to Read and Study Their Bibles
There is a shortage of material which teaches children and pre–teens how to read and study the Bible. It is important for educators to help them become good Bible readers and interpreters. This paper presents five crucial steps that are important to instruct children and pre–teens in the skills necessary to work out the appropriate meaning and application of the Biblical text. Because children and adolescents learn by “doing,” this article suggests core activities to help them understand and develop Bible interpretation skills
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