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Engineered iron oxide nanoparticles (IO-NPs) have been used extensively for environmental remediation. It may cause the release IO-NPs to the environment affecting the functions of ecosystems. Plants are an important component of ecosystems and can be used for the evaluation of overall fate, transport and exposure pathways of IO-NPs in the environment. In this work, the effects of engineered ferrihydrite and hematite NPs on the germination and growth of maize are studied. The germination and growth of maize were done with treatments at different concentrations of hematite and ferrihydrite NPs, namely 1, 2, 4, and 6 g/L. Biological indicators of toxicity or stress in maize seedlings were not observed in treatments with engineered hematite and ferrihydrite NPs. In contrast, the NPs treatments increased the growth of maize and the chlorophyll content, except for hematite NPs at 6 g/L, where non-significant effects were found. The translocation of engineered ferrihydrite and hematite NPs in maize stems was demonstrated using confocal laser scanning microscopy.

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Objectives The aim of this study was to evaluate 1-year clinical outcomes of diabetic patients treatedwith the Absorb bioresorbable vascular scaffold (BVS).Background Clinical outcomes of diabetic patients after BVS implantation have been unreported.Methods This study included 101 patients in the ABSORB Cohort B trial and the first consecutive 450patients with 1 year of follow-up in the ABSORB EXTEND trial. A total of 136 diabetic patients werecompared with 415 nondiabetic patients. In addition, 882 diabetic patients treated with everolimuselutingmetal stents (EES) in pooled data from the SPIRIT trials (SPIRIT FIRST [Clinical Trial of the AbbottVascular XIENCE V Everolimus Eluting Coronary Stent System], SPIRIT II [A Clinical Evaluation of the XIENCEV Everolimus Eluting Coronary Stent System], SPIRIT III [Clinical Trial of the XIENCE V Everolimus ElutingCoronary Stent System (EECSS)], SPIRIT IV Clinical Trial [Clinical Evaluation of the XIENCE V EverolimusEluting Coronary Stent System]) were used for the comparison by applying propensity score matching.The primary endpoint was a device-oriented composite endpoint (DoCE), including cardiac death, targetvessel myocardial infarction, and target lesion revascularization at 1-year follow-up.Results The cumulative incidence of DoCE did not differ between diabetic and nondiabetic patientstreated with the BVS (3.7% vs. 5.1%, p » 0.64). Diabetic patients treated with the BVS had a similarincidence of the DoCE compared with diabetic patients treated with EES in the matched study group(3.9% for the BVS vs. 6.4% for EES, p » 0.38). There were no differences in the incidence of definite orprobable scaffold/stent thrombosis (0.7% for both diabetic and nondiabetic patients with the BVS; 1.0%for diabetic patients with the BVS vs. 1.7% for diabetic patients with EES in the matched study group).Conclusions In the present analyses, diabetic patients treated with the BVS showed...

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Transition probabilities on the interaction of the ground and the lowest excited states of gold Au ((2)S:5d(10)6s(1), (2)D:5d(9)6s(2), and (2)P:5d(10)6p(1)) with silane (SiH(4)) are studied through ab initio Hartree-Fock self-consistent field calculations, where the atom's core is represented by relativistic effective core potentials. These calculations are followed by a multiconfigurational self-consistent field study. The correlation energy is accounted for through extensive variational and perturbative second order multireference Moller-Plesset configuration interaction analysis of selected perturbations obtained by iterative process calculations using the CIPSI program package. It is found that the Au atom in the ((2)P:5d(10)6p(1)) state inserts in the Si-H bond. In this interaction its corresponding D (2)A(') potential energy surface is initially attractive and only becomes repulsive after encountering an avoided crossing with the initially repulsive C (2)A(') surface linked to the Au((2)D:5d(9)6s(2))-SiH(4) fragments. The A, B, and C (2)A(') curves derived from the Au((2)D:5d(9)6s(2)) atom interaction with silane are initially repulsive, each one of them showing two avoided crossings, while the A (2)A(') curve goes sharply downwards until it meets the X (2)A(') curve interacting adiabatically, which is linked with the Au((2)S:5d(10)6s(1))-SiH(4) moieties. The A (2)A(') curve becomes repulsive after the avoided crossing with the X (2)A('), curve. The lowest-lying X (2)A(') potential leads to the HAuSiH(3) X (2)A(') intermediate molecule. This intermediate molecule, diabatically correlated with the Au((2)P:5d(10)6p(1))+SiH(4) system which lies 3.34 kcal/mol above the ground state reactants, has been carefully characterized as have the dissociation channels leading to the AuH+SiH(3) and H+AuSiH(3) products. These products are reached from the HAuSiH(3) intermediate without any activation barrier. The Au-SiH(4) calculation results are successfully compared to experiment. Landau-Zener theory of avoided crossings is applied to these interactions considering the angle theta instead of the distance r as the reaction coordinate.

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Se desarrolló un prototipo para la electroforesis de campo pulsante en gel de agarosa, que permite separar moléculas de ADN de hasta 2 000 kb. El equipo se fundamenta en la propiedad que tienen las moléculas grandes de ADN, de fraccionarse en geles de agarosa si son sometidas alternadamente a dos campos eléctricos no homogéneos de orientación perpendicular. En los experimentos, los tiempos de pulso fueron 60s, y se estudió la influencia de la fuerza iónica y el tiempo de corrida sobre la resolución de las bandas. El método fue utilizado para obtener el cariotipo electroforético de dos cepas de Saccharomyces cerevisiae. El trabajo describe las distintas partes del equipo, el protocolo electroforético, y la caracterización parcial de algunas bandas mediante hibridización ADN-ADN con sondas específicas para diferentes cromosomas

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