Sökresultat

Filtyp

Din sökning på "*" gav 529632 sökträffar

A Technique for Remote Detection of Certain Virtual Machine Monitors

The ability to detect a virtualized environment has both malicious and non-malicious uses. This paper reveals a new exploit and technique that can be used to remotely detect VMware Workstation, VMware Player and VirtualBox. The detection based on this technique can be done completely passively in that there is no need to have access to the remote machine and no network connections are initiated by

Measurement of the inclusive W-+/- and Z/gamma* cross sections in the e and mu decay channels in pp collisions at root s=7 TeV with the ATLAS detector

The production cross sections of the inclusive Drell-Yan processes W-+/- -> l nu and Z/gamma* -> ll (l = e, mu) are measured in proton-proton collisions at root s = 7 TeV with the ATLAS detector. The cross sections are reported integrated over a fiducial kinematic range, extrapolated to the full range, and also evaluated differentially as a function of the W decay lepton pseudorapidity and the Z b

A Heteroleptic Ferrous Complex with Mesoionic Bis(1,2,3-triazol-5-ylidene) Ligands: Taming the MLCT Excited State of Iron(II).

Strongly σ-donating N-heterocyclic carbenes (NHCs) have revived research interest in the catalytic chemistry of iron, and are now also starting to bring the photochemistry and photophysics of this abundant element into a new era. In this work, The efficient synthesis of a heteroleptic Fe(II) complex (1) is based on sequentially furnishing the Fe(II) center with the benchmark 2,2'-bipyridine (bpy)

On the influence of bimodal size distributions in particle sizing using laser-induced incandescence

Time-resolved laser-induced incandescence (LII) is a technique for in-situ soot particle size distribution measurements with the limitation that the distribution function has to be assumed (often monodisperse or lognormal) in the signal analysis. Since it is established that size distributions sometimes are bimodal, it is of interest to understand the influence from such distributions on the LII s

Subgroup Analyses in Randomized Controlled Trials: The Need for Risk Stratification in Kidney Transplantation

Although randomized controlled trials (RCT) are the gold standard for establishing causation in clinical research, their aggregated results can be misleading when applied to individual patients. A treatment may be beneficial in some patients, but its harms may outweigh benefits in others. While conventional one-variable-at-a-time subgroup analyses have well-known limitations, multivariable risk-ba

Crosstalk between metal ions in Bacillus subtilis ferrochelatase

Ferrochelatase (EC 4.99.1.1), the terminal enzyme in the heme biosynthetic pathway, catalyzes the insertion of Fe2+ into protoporphyrin IX, generating heme. In vitro assays have shown that all characterized ferrochelatases can also incorporate Zn2+ into protoporphyrin IX. Previously Zn2+ has been observed at an inner metal binding site close to the porphyrin binding site. Mg2+, which stimulates Zn

Spatial and temporal variation of polychlorinated biphenyl (PCB) in precipitation in southern Sweden.

Spatial and temporal variations in polychlorinated biphenyl (PCB) concentrations were studied in precipitation at 11 sampling-sites over a period of 1 year and compared with PCB concentrations in the air. The study was carried out in a region of southern Sweden approximately 11 000 km2 in area. The PCB concentration in precipitation ranged between 1.18 and 81.4 ng l(-1). Two of the sampling sites

Health profile of middle-aged women: The Women's Health in the Lund Area (WHILA) study.

BACKGROUND: Middle-aged women experience various health-related problems. The aim of this study was to evaluate the impacts of menopause status and hormone intervention on women's health. METHODS: In an ongoing, population-based study, 4943 women, born 1935 to 1945 and living in the Lund area of Southern Sweden, were included in this analysis. They completed a generic questionnaire pertaining to s

Leukotriene D(4) affects localisation of vinculin in intestinal epithelial cells via distinct tyrosine kinase and protein kinase C controlled events

Local inflammatory reactions affect the integrity of intestinal epithelial cells, such as E-cadherin-mediated cell-cell interactions. To elucidate this event, we investigated the effects of an inflammatory mediator, leukotriene D(4 )(LTD(4)), on the phosphorylation status and properties of vinculin, a multi-binding protein known to interact with both the E-cadherin-catenin complex and the cytoskel

Changes in lipid and lipoprotein profile in postmenopausal women receiving low-dose combinations of 17 beta-estradiol and norethisterone acetate

Objective: To evaluate the modification of lipid and lipoprotein by use of low doses of continuous-combined formulations of 17beta-estradiol (E-2) and norethisterone acetate (NETA) in healthy postmenopausal women. Design: The study was designed as a double-blind, randomized, placebo-controlled trial. A total of 120 healthy postmenopausal women were randomized to one of three treatment arms: (1) pl

Patients with heart failure in primary health care: effects of a nurse-led intervention on health-related quality of life and depression

Aims: To determine the effects of a nurse-led intervention designed to improve self-management of patients with heart failure in a primary health care setting regarding health-related quality of life and depression. Methods: Patients at eight primary health care centres were screened by the Diagnosis Related Groups registry for the diagnosis of heart failure and eligibility for a cluster randomise

Investigation of polymethylmethacrylate resist residues using photoelectron microscopy

Quantitative photoelectron spectromicroscopy has been used to study polymethylmethacrylate (PMMA) resist residues on SiO2 surfaces after electron beam exposure and resist development, It was found that correctly exposed and developed PMMA leaves residues with an average thickness of about 1 nm. Higher exposure doses result in the decrease in film thickness, but with residues of about 0.5 mn. The t

Consumption patterns, complexity and enrichment in aquatic food chains

The interactions between consumers and prey, and their impact on biomass distribution among trophic levels, are central issues in both empirical and theoretical ecology. In a long-term experiment, where all organisms, including the top predator, were allowed to respond to environmental conditions by reproduction, we tested predictions from `prey-dependent' and `ratio-dependent' models. Prey-depend

Integrated modeling of the Euro50

The Euro50 is a proposed 50 m optical and infrared telescope. It will have thousands of control loops to keep the optics aligned under influence of wind, gravity and thermal loads. Cross-disciplinary integrated modeling is used to study the overall performance of the Euro50. A sub-model of the mechanical structure originates from finite element modeling. The optical performance is determined using

JunB Protects against Myeloid Malignancies by Limiting Hematopoietic Stem Cell Proliferation and Differentiation without Affecting Self-Renewal

Loss of the JunB/AP-1 transcription factor induces a myeloproliferative disease (MPD) arising from the hematopoietic stem cell (HSC) compartment. Here, we show that junB inactivation deregulates the cell-cycle machinery and increases the proliferation of long-term repopulating HSCs (LT-HSCs) without impairing their self-renewal or regenerative potential in vivo. We found that JunB loss destabilize

The future of PID control

This paper presents the state of the art of PID control and reflectson its future. Particular issues discussed include specifications,stability, design, applications, and performance of PID control. Thepaper ends with a discussion of alternatives to PID and its future.