Ionizing Radiation Resistance in Deinococcus Radiodurans

Deinococcus radiodurans is unmatched among all known species in its ability to resist ionizing radiation and other DNA-damaging factors. It is considered a model organism in the study of DNA damage and repair. Treatment of D. radiodurans with an acute dose of 5,000 Gy of ionizing radiation with almost no loss of viability, and an acute dose of 15,000 Gy with 37% viability. The extreme radiation resistance of this bacterium is due to efficient DNA repair capacity, high antioxidant activities, and unique cell structure. Based on the latest findings, the general characteristics and ionizing radiation resistance mechanisms of D. radiodurans are reviewed and discussed in this paper

Developments of electric cars and fuel cell hydrogen electric cars

The world continues to strive in the search for clean power sources to run the millions of different vehicles on the road on daily basis as they are the main contributors to toxic emissions releases from internal combustion engines to the atmosphere. These toxic emissions contribute to climate change and air pollution and impact negatively on people's health. Fuel cell devices are gradually replacing the internal combustion engines in the transport industry. Some notable challenges of the PEMFC technology are discussed in this paper. High costs, low durability and hydrogen storage problems are some of the major obstacles being examined in this investigation. The paper explores the latest advances in electric cars technology and their design specifications. The study also compares the characteristics and the technologies of the three types of electric cars now available in the market.interna

Predicting Thermodynamic Properties of PBXTHs with New Quantum Topological Indexes.

Novel group quantitative structure-property relationship (QSPR) models on the thermodynamic properties of PBXTHs were presented, by the multiple linear regression (MLR) analysis method. Four thermodynamic properties were studied: the entropy (Sθ), the standard enthalpy of formation (ΔfHθ), the standard Gibbs energy of formation (ΔfGθ), and the relative standard Gibbs energy of formation (ΔRGθ). The results by the formula indicate that the calculated and predicted data in this study are in good agreement with those in literature and the deviation is within the experimental errors. To validate the estimation reliability for internal samples and the predictive ability for other samples, leave-one-out (LOO) cross validation (CV) and external validation were performed, and the results show that the models are satisfactory

Molecular structure of 2,8-DBXTH.

<p>Molecular structure of 2,8-DBXTH.</p

Thermodynamic Data and the Quantum Topological Indices <i>XP</i>₁、<i>XP</i>₂ of XTH and 135 PBXTHs.

<p>Thermodynamic Data and the Quantum Topological Indices <i>XP</i>₁、<i>XP</i>₂ of XTH and 135 PBXTHs.</p

Molecular structure and atomic numbering of XTH.

<p>Molecular structure and atomic numbering of XTH.</p

The plot of group structure tree.

<p>The plot of group structure tree.</p

The predicted values versus calculated values in literature[19]of Δ_f<i>H</i>^θ.

<p>The predicted values versus calculated values in literature[<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0147126#pone.0147126.ref019" target="_blank">19</a>]of Δ_f<i>H</i>^θ.</p

The predicted values versus calculated values in literature[19]of Δ_f<i>G</i>^θ.

<p>The predicted values versus calculated values in literature[<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0147126#pone.0147126.ref019" target="_blank">19</a>]of Δ_f<i>G</i>^θ.</p