| 1. |
- Aidas, Kestutis, et al.
(författare)
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The Dalton quantum chemistry program system
- 2014
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Ingår i: WIREs Computational Molecular Science. - : Wiley. - 1759-0876 .- 1759-0884. ; 4:3, s. 269-284
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Tidskriftsartikel (refereegranskat)abstract
- Dalton is a powerful general-purpose program system for the study of molecular electronic structure at the Hartree-Fock, Kohn-Sham, multiconfigurational self-consistent-field, MOller-Plesset, configuration-interaction, and coupled-cluster levels of theory. Apart from the total energy, a wide variety of molecular properties may be calculated using these electronic-structure models. Molecular gradients and Hessians are available for geometry optimizations, molecular dynamics, and vibrational studies, whereas magnetic resonance and optical activity can be studied in a gauge-origin-invariant manner. Frequency-dependent molecular properties can be calculated using linear, quadratic, and cubic response theory. A large number of singlet and triplet perturbation operators are available for the study of one-, two-, and three-photon processes. Environmental effects may be included using various dielectric-medium and quantum-mechanics/molecular-mechanics models. Large molecules may be studied using linear-scaling and massively parallel algorithms. Dalton is distributed at no cost from for a number of UNIX platforms.
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| 2. |
- Forsberg, Karin, et al.
(författare)
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Novel antibodies reveal inclusions containing non-native SOD1 in sporadic ALS patients
- 2010
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Ingår i: PLOS ONE. - : Public library of science. - 1932-6203. ; 5:7, s. e11552-
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Tidskriftsartikel (refereegranskat)abstract
- Mutations in CuZn-superoxide dismutase (SOD1) cause amyotrophic lateral sclerosis (ALS) and are found in 6% of ALS patients. Non-native and aggregation-prone forms of mutant SOD1s are thought to trigger the disease. Two sets of novel antibodies, raised in rabbits and chicken, against peptides spaced along the human SOD1 sequence, were by enzyme-linked immunosorbent assay and an immunocapture method shown to be specific for denatured SOD1. These were used to examine SOD1 in spinal cords of ALS patients lacking mutations in the enzyme. Small granular SOD1-immunoreactive inclusions were found in spinal motoneurons of all 37 sporadic and familial ALS patients studied, but only sparsely in 3 of 28 neurodegenerative and 2 of 19 non-neurological control patients. The granular inclusions were by confocal microscopy found to partly colocalize with markers for lysosomes but not with inclusions containing TAR DNA binding protein-43, ubiquitin or markers for endoplasmic reticulum, autophagosomes or mitochondria. Granular inclusions were also found in carriers of SOD1 mutations and in spinobulbar muscular atrophy (SBMA) patients and they were the major type of inclusion detected in ALS patients homozygous for the wild type-like D90A mutation. The findings suggest that SOD1 may be involved in ALS pathogenesis in patients lacking mutations in the enzyme.
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| 3. |
- Janssen, Xander J. A., et al.
(författare)
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Rapid manufacturing of low-noise membranes for nanopore sensors by trans-chip illumination lithography
- 2012
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Ingår i: Nanotechnology. - : IOP Publishing: Hybrid Open Access. - 0957-4484 .- 1361-6528. ; 23:47
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Tidskriftsartikel (refereegranskat)abstract
- In recent years, the concept of nanopore sensing has matured from a proof-of-principle method to a widespread, versatile technique for the study of biomolecular properties and interactions. While traditional nanopore devices based on a nanopore in a single layer membrane supported on a silicon chip can be rapidly fabricated using standard microfabrication methods, chips with additional insulating layers beyond the membrane region can provide significantly lower noise levels, but at the expense of requiring more costly and time-consuming fabrication steps. Here we present a novel fabrication protocol that overcomes this issue by enabling rapid and reproducible manufacturing of low-noise membranes for nanopore experiments. The fabrication protocol, termed trans-chip illumination lithography, is based on illuminating a membrane-containing wafer from its backside such that a photoresist (applied on the wafers top side) is exposed exclusively in the membrane regions. Trans-chip illumination lithography permits the local modification of membrane regions and hence the fabrication of nanopore chips containing locally patterned insulating layers. This is achieved while maintaining a well-defined area containing a single thin membrane for nanopore drilling. The trans-chip illumination lithography method achieves this without relying on separate masks, thereby eliminating time-consuming alignment steps as well as the need for a mask aligner. Using the presented approach, we demonstrate rapid and reproducible fabrication of nanopore chips that contain small (12 mu m x 12 mu m) free-standing silicon nitride membranes surrounded by insulating layers. The electrical noise characteristics of these nanopore chips are shown to be superior to those of simpler designs without insulating layers and comparable in quality to more complex designs that are more challenging to fabricate.
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| 4. |
- Jonsson, Magnus P., et al.
(författare)
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Plasmonic Nanopore for Electrical Profiling of Optical Intensity Landscapes
- 2013
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Ingår i: Nano letters (Print). - : American Chemical Society. - 1530-6984 .- 1530-6992. ; 13:3, s. 1029-1033
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Tidskriftsartikel (refereegranskat)abstract
- We present a novel method for sensitive mapping of optical intensity distributions at subdiffraction-limited resolution. This is achieved with a novel device, a plasmonic nanopore, which combines a plasmonic bowtie nanoantenna with a 10 nm-in-diameter solid-state nanopore. Variations in the local optical intensity modulate the plasmonic heating, which we measure electrically through changes in the ionic conductance of the nanopore. We demonstrate the method by profiling the focal volume of a 10 mW laser beam that is tightly focused by a high-numerical-aperture microscope objective. The results show a complex three-dimensional intensity distribution that closely matches predictions obtained by theoretical calculations of the optical system. In addition to laser profiling, the ionic conductance of a nanopore is also shown to provide quantitative estimates of the temperature in the proximity of single plasmonic nanostructures.
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| 5. |
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| 6. |
- Melby, V, et al.
(författare)
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Patient comfort in pre-hospital emergency care : A challenge to clinicians.
- 2012
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Ingår i: Journal of Paramedic Practice. - : M A Healthcare Ltd.. - 1759-1376. ; 4:7, s. 389-399
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Tidskriftsartikel (refereegranskat)abstract
- Aim: The aim of this paper is to report on a study that compared ambulance clinicians' views of two different types of patient coverings, focusing on core caring concepts such as comfort, dignity, and safety. Design: Ambulance clinicians' views were gathered in respect of two types of patient coverings, and 128 ambulance patients were randomly distributed into a control or experimental group receiving respectively either the traditional cotton blanket or a multi-layered TelesPro rescue covering. Views were gathered using a short questionnaire developed by the authors. Findings: Ambulance clinicians, in their own view, maintained the core caring concepts no matter which type of covering was used. Findings suggest strongly that the rescue covering provided for a superior patient experience in respect of all core concepts and one functional aspect. Conclusions: Ambulance clinicians undertake caring that encompasses the core caring concepts of comfort, safety, and dignity, while remaining vigilant to threats to these constituents of caring.
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| 7. |
- Soni, Gautam V., et al.
(författare)
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Periodic Modulations of Optical Tweezers Near Solid-State Membranes
- 2013
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Ingår i: Small. - : Wiley-VCH Verlag. - 1613-6810 .- 1613-6829. ; 9:5, s. 679-684
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Tidskriftsartikel (refereegranskat)abstract
- Optical tweezers operated near solid-state membranes show unexplained periodic modulations in the optical trap position. An experimental study of the oscillations is presented, as well as optical simulations based on the finite-difference time-domain method, providing insight into the underlying interference phenomenon. This work provides a complete description as well as a solution to the enduring problem of modulations in optical traps near solid-state membranes.
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