35 research outputs found
Divine Prayers and epopees
In our epic narratives, heroism is not limited to the bravery and warfare in the battlefield and hero is not the one who has the power, but wisdom, kindness and justice, generosity and enlightenment, and especially monotheism and praying to God is the highest heroism. During widespread recent research, the significant and effective role of the Shahnameh was studied on the epics after it. However, the study of ethics and wisdom of epics is less considered and most research dealt with mythological and heroic narratives as well as epics. There is not yet an independent study about the evaluation of divine prayers and remembrance of God in these epics and comparing them with Shahnameh. This research, by studying the prayer, traditions, conditions and their frequency in each epic, represents the influence of Shahnameh on these works
A genetic algorithm-Bayesian network approach for the analysis of metabolomics and spectroscopic data: application to the rapid detection of Bacillus spores and identification of Bacillus species
Background
The rapid identification of Bacillus spores and bacterial identification are paramount because of their implications in food poisoning, pathogenesis and their use as potential biowarfare agents. Many automated analytical techniques such as Curie-point pyrolysis mass spectrometry (Py-MS) have been used to identify bacterial spores giving use to large amounts of analytical data. This high number of features makes interpretation of the data extremely difficult We analysed Py-MS data from 36 different strains of aerobic endospore-forming bacteria encompassing seven different species. These bacteria were grown axenically on nutrient agar and vegetative biomass and spores were analyzed by Curie-point Py-MS.
Results
We develop a novel genetic algorithm-Bayesian network algorithm that accurately identifies sand selects a small subset of key relevant mass spectra (biomarkers) to be further analysed. Once identified, this subset of relevant biomarkers was then used to identify Bacillus spores successfully and to identify Bacillus species via a Bayesian network model specifically built for this reduced set of features.
Conclusions
This final compact Bayesian network classification model is parsimonious, computationally fast to run and its graphical visualization allows easy interpretation of the probabilistic relationships among selected biomarkers. In addition, we compare the features selected by the genetic algorithm-Bayesian network approach with the features selected by partial least squares-discriminant analysis (PLS-DA). The classification accuracy results show that the set of features selected by the GA-BN is far superior to PLS-DA
Divine Prayers and epopees
In our epic narratives, heroism is not limited to the bravery and warfare in the battlefield and hero is not the one who has the power, but wisdom, kindness and justice, generosity and enlightenment, and especially monotheism and praying to God is the highest heroism. During widespread recent research, the significant and effective role of the Shahnameh was studied on the epics after it. However, the study of ethics and wisdom of epics is less considered and most research dealt with mythological and heroic narratives as well as epics. There is not yet an independent study about the evaluation of divine prayers and remembrance of God in these epics and comparing them with Shahnameh. This research, by studying the prayer, traditions, conditions and their frequency in each epic, represents the influence of Shahnameh on these works
Divine Prayers and epopees
In our epic narratives, heroism is not limited to the bravery and warfare in the battlefield and hero is not the one who has the power, but wisdom, kindness and justice, generosity and enlightenment, and especially monotheism and praying to God is the highest heroism. During widespread recent research, the significant and effective role of the Shahnameh was studied on the epics after it. However, the study of ethics and wisdom of epics is less considered and most research dealt with mythological and heroic narratives as well as epics. There is not yet an independent study about the evaluation of divine prayers and remembrance of God in these epics and comparing them with Shahnameh. This research, by studying the prayer, traditions, conditions and their frequency in each epic, represents the influence of Shahnameh on these works.Hoje, estudos comparativos e a investigação da relação entre textos baseados em
várias teorias estão entre as questões mais comuns e importantes que atraíram muitos
acadêmicos e pesquisadores, incluindo as teorias, a teoria de intertextualidade de Harold Bloom
e a teoria de transtextualidade de Gérard Genette, usando essas teorias. Podemos ver a relação
de um texto com outros textos. Em nossas narrativas épicas, o heroísmo não se limita à bravura
e à guerra no campo de batalha e o herói não é quem tem o poder, mas a sabedoria, a bondade
e a justiça, a generosidade e a iluminação e, principalmente, o monoteísmo e a oração a Deus é
o maior heroísmo. . Durante uma pesquisa recente generalizada, o papel significativo e eficaz
do Shahnameh foi estudado nos épicos posteriores a ele. No entanto, o estudo da ética e da
sabedoria dos épicos é menos considerado e a maioria das pesquisas trata de narrativas
mitológicas e heróicas, além de épicas. Ainda não há um estudo independente sobre a avaliação
das orações divinas e a lembrança de Deus nesses épicos e comparando-as com Shahnameh.
Esta pesquisa, estudando a oração, tradições, condições e sua frequência em cada épico,
representa a influência de Shahnameh nessas obras. O objetivo deste artigo, Estudo
comparativo, é o princípio do monoteísmo e da invocação. De acordo com a teoria da
intertextualidade de Harold Bloom
Thermodynamic and kinetic studies on interaction of some transition metal ions with tryptophan
Amino acid of tryptophan (Trp) was chosen as a drug. A systematic approach was made to study its interaction with some transition metal ions, and qualitatively and quantitatively examine the thermodynamic and kinetic phenomena on this model drug. To accomplish these tasks, the stability constants of Trp complexes with Fe(III), Co(II), Ni(II), Cu(II), Zn(II) and Pb(II) at temperatures of 25, 30, 35, and 40 °C were determined potentiometrically, utilizing modified Bjerrum’s method. Potentiometric titrations were carried out in water, and water:dioxane mixture (50:50, v:v). Our findings showed that the stability constants of the complexes increased as the dioxane content was raised or temperature was elevated. The negative values of ΔG° are indication of spontaneity of the processes. ΔH° values are positive, conveying the complex formation is an endothermic process and ΔS° values are positive contributing more to spontaneity, causing reaction favoring and disordering. The variations of natural logarithm of the stability constants versus 1/T are linear leading to evaluation of the stability constant of the complexes at any temperature. Moreover, kinetic study gave rise to estimation of rate constant and activation energy for each complex formation process. It was concluded that the order of increasing stability of the complexes is: kf Co(II)-Trp » kf Zn(II)-Trp < kf Pb(II)-Trp < kf Ni(II)-Trp < kf Cu(II)-Trp < kf Fe (III)- Trp. Furthermore the activation energy values for the aforementioned complexes in water-dioxane mixture obeyed the following trend Ea Zn(II)-trp < Ea Fe(III)-Trp < Ea Ni(II)-trp < Ea Co(II)-trp <Ea Cu(II)-trp <Ea Pb(II)-trp
Binary Complexes of Aspartic Acid with Some Metal Ions in Aqueous Solution and Water-dioxane Mixtures
The reaction between amino acids and metal ions has been used as a model for transferring the metallic ions to body tissues. How stable these complexes are formed is our concern. The stability constants of the complexes between L-aspartic acid (Asp) and Co(II), Ni(II), Cu(II), Zn(II), Cd(II) and Ce(III) metal ions were determined by potentiometric titrations in aqueous solution and in 25-75%(v/v) of water-dioxane mixtures(I = 0.1 M, NaNO3) at 15, 20, 25, 35, and 45°C.The observed increasing stability order for the corresponding complexes in water and water-dioxane mixtures were as follows:
Kf Cd (II)-Asp< Kf Zn (II)-Asp < Kf Co (II)-Asp< Kf Ni (II)-Asp < Kf Ce(III)-Asp< Kf Cu(II)-Asp
Mixed solvents such as water-dioxane provide a better model for in vivo reactions. It was observed that with increase in the percentage of dioxane, the stability constants were elevated. The results showed that the reactions were exothermic and spontaneous
Density estimation of normal alkanes from the statistical-thermodynamic perturbation theory based equation of state
591-594An analytical equation of
state (EoS) proposed by Ihm-Song-Mason (ISM) is employed to calculate the
density of normal alkanes from methane to decane. The best available values of
the Lennard-Jones (12,6) parameters have been used to evaluate the second
virial coefficient of the EoS for each compound. The second virial coefficient
is not very sensitive to the feature of the intermolecular potential. The
remaining parameters in the EoS depend only on the repulsive part of the
potential. Consequently, they are insensitive to the details of the interaction
potential. The calculated second virial coefficients in conjunction with other
temperature-dependent parameters of the EoS are employed to predict the density
of all alkanes (C1-C10). There is a
good agreement comparison between the experimental values of density and the
calculated values from ISM EoS for all of the compounds
Wavelength pair selection for bacterial endospore detection by use of terbium dipicolinate photoluminescence
Effect of cultural conditions on deep UV resonance raman spectra of bacteria
Bacteria grown on trypticase soy agar (TSA), trypticase soy broth (TSB), and Davis minimal media, and harvested at times ranging from 4.5 to 48 h have been excited at 242.54 and 222.65 nm for the purpose of generating resonance Raman spectra. When excitation with 242.54-nm light occurs, simple spectra of tyrosine and tryptophan and various nucleic acids are observed. Large changes in the relative intensities of major nucleic acid peaks at 1485 and 1575 cm -~, on the one hand, as compared to a prominent protein tyrosine + tryptophan peak at 1616 cm -~, on the other, have been attributed to very large variations in the RNA content of bacterial cells from culture to culture. The spectral changes are observed whenever differences in growth rates or variations in cultural media result in substantial changes in the amount of ribosomal RNA. In spite of very large cultural effects on peak intensities it has been possible to obtain bacterial G+C/A+T ratios from these spectra. Specifically, the ratio of the intensity of the C (1530 cm -~) peak to the intensity of the A+G peak (1485 cm -~) when plotted against the known molar percent G+C of the corresponding bacterial DNA produces a straight line. Plots have been shown to be very nearly growth-time and media independent for fourteen different types of bacteria, which range in DNA G+C content from 32 to 66%. Spectra obtained with 222.65- nm light, in contrast with spectra obtained with 242.54-nm excitation, have been found to be nearly growth-rate and media independent. The excitation wavelength, 222.65 nm, appears to be the best yet found for use in rapid Raman identification of bacteria. All strong peaks which have been assigned have been attributed to protein modes. Relative intensities of 1556-cm ~ tryptophan and 1616-cm -~ tryptophan + tyrosine bands have been found to be strongly correlated with bacterial Gram type and nearly independent of cultural media or stage of growth. © 1993 Society for Applied Spectroscopy