The last century saw dramatic challenges to the Laplacian predictability which had underpinned scientific research for around 300 years. Basic to this was Alan Turing’s 1936 discovery (along with Alonzo Church) of the existence of unsolvable problems. This paper focuses on incomputability as a powerful theme in Turing’s work and personal life, and examines its role in his evolving concept of ma...

Prior to a software upgrade and hardware maintenance on March 17th 2009 on the Frankin Cray XT4 machine at the National Energy Research Scientific Computing (NERSC) Center, MPI-IO shared file performance saw only a small percentage of file-per-processor performance POSIX performance. The March 17th upgrade unintentionally increased I/O performance significantly for a number of applications. Thi...

Curves relating left ventricular end-diastolic pressure (LVEDP) to echocardiographically determined end-diastolic diameter (LVEDD) were obtained before and after ischemic arrest in 15 patients during open heart surgery. LVEDP ranged from 0-20 mm Hg during routine operation of the heart-lung machine. Ischemic arrest ranged from 0-94 minutes. In eight patients averaging 21 ± 7 (SEM) minutes of ar...

We measured the form factor of bottle-brush macromolecules under good solvent conditions with small-angle neutron scattering and static light scattering. The systems under investigation are brushes, synthesized via the grafting-from route, built from a poly(alkyl methacrylate) backbone to which poly(n-butyl acrylate) side chains are densely grafted. The aim of our work is to study how the syste...

A multiple magnetic mirror array is formed at the Large Plasma Device LAPD W. Gekelman, H. Pfister, Z. Lucky, J. Bamber, D. Leneman, and J. Maggs, Rev. Sci. Instrum. 62, 2875 1991 to study axial periodicity-influenced Alfvén spectra. Shear Alfvén waves SAW are launched by antennas inserted in the LAPD plasma and diagnosed by B-dot probes at many axial locations. Alfvén wave spectral gaps and co...

The article covers the method of preparing microsections for microstructural analysis disc saw fiber-extracting machine DP-130 brand. All stages preparation sections and features their manufacture are described. Moreover, results experimental studies after laser hardening a presented.

First there was Peter Toma, the idealistic, Hungarian-born inventor of the system who saw machine translation as a contribution towards achieving world peace. In recent years he has set up private university faculties in New Zealand and Argentina in those areas of the globe which are least likely to be affected by nuclear fallout. Then came Sadao Kawasaki, a Tokyo businessman who had made a few...

BACKGROUND Pulmonary-delivered gene therapy promises to mitigate vaccine safety issues and reduce the need for needles and skilled personnel to use them. While plasmid DNA (pDNA) offers a rapid route to vaccine production without side effects or reliance on cold chain storage, its delivery to the lung has proved challenging. Conventional methods, including jet and ultrasonic nebulizers, fail to...