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PubMed Journals Articles About "Telescope Featuring Optics From Rigaku Innovative Technologies Europe" RSS

21:29 EDT 23rd September 2018 | BioPortfolio

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Showing "Telescope Featuring Optics from Rigaku Innovative Technologies Europe" PubMed Articles 1–25 of 5,400+

Three-mirror anastigmat for cosmic microwave background observations.

An off-axis three-mirror anastigmat is proposed for future cosmic microwave background observations. The telescope has a 5 m diameter primary, giving 1.5angular resolution at λ=2  mm, which is sufficient for measurements of gravitational lensing and for galaxy cluster surveys. The design includes several key features, not previously combined in a large telescope, that are important for sensitive measurements, especially on large angular scales: (1) high throughput (8° diameter diffraction-limited fi...


Wide field-of-view crossed Dragone optical system using anamorphic aspherical surfaces.

A side-fed crossed Dragone telescope provides a wide field of view. This type of telescope is commonly employed in the measurement of cosmic microwave background polarization, which requires an image-space telecentric telescope with a large focal plane over broadband coverage. We report the design of a wide field-of-view crossed Dragone optical system using anamorphic aspherical surfaces with correction terms up to the 10th order. We achieved a Strehl ratio larger than 0.95 over 32×18 square degrees at 150...

Ray tracing method for the evaluation of grazing incidence x-ray telescopes described by spatially sampled surfaces.

The nested grazing incidence telescope can achieve a large collecting area in x-ray astronomy, with a large number of closely packed, thin conical mirrors. Exploiting the surface metrological data, the ray tracing method used to reconstruct the shell surface topography and evaluate the imaging performance is a powerful tool to assist iterative improvement in the fabrication process. However, current two-dimensional (2D) ray tracing codes, especially when utilized with densely sampled surface shape data, may...


Innovative technologies and social inequalities in health: A scoping review of the literature.

The aim of this study was to systematically review the range, nature, and extent of current research activity exploring the influence of innovative health-related technologies on social inequalities in health, with specific focus on a deeper understanding of the variables used to measure this connection and the pathways leading to the (re)production of inequalities. A review process was conducted, based on scoping review techniques, searching literature published from January 1, 1996 to November 25, 2016 us...

Telescope-based cavity for negative ion beam neutralization in future fusion reactors.

In future fusion reactors, heating system efficiency is of the utmost importance. Photo-neutralization substantially increases the neutral beam injector (NBI) efficiency with respect to the foreseen system in the International Thermonuclear Experimental Reactor (ITER) based on a gaseous target. In this paper, we propose a telescope-based configuration to be used in the NBI photo-neutralizer cavity of the demonstration power plant (DEMO) project. This configuration greatly reduces the total length of the cav...

Innovative digital technologies for quality assurance of diagnosis of human African trypanosomiasis.

Hiroaki Shimokawa MD PhD: In the latest of our series featuring pioneers in cardiology, Mark Nicholls speaks to Hiroaki Shimokawa, Professor and Chairman, Department of Cardiovascular Medicine at Tohoku University, Japan, about his career, research and innovative work.

Contemporary Aspects of Marketing in Clinical Trials Including Segments of IT and Technology Transfer.

The aim of this paper is to present the marketing strategy and the application of management (marketing management) and advertising in order to increase the efficiency of innovative approach in clinical trials that include and involve the use of new technologies and transfer of technologies.

Cancer Core Europe: A European cancer research alliance realizing a research infrastructure with critical mass and programmatic approach to cure cancer in the 21st century.

Translational cancer research covers the whole cancer research continuum from basic to preclinical to early clinical, late clinical and outcomes research. Basic-preclinical research is the "engine" for early clinical research bridging the early translational research gap. Cancer Core Europe has been created to construct a sustainable, high level, shared research infrastructure platform with research collaborations and taskforces (data sharing, clinical trials, genomics, immunotherapy, imaging, legal & ethic...

Emerging Food Processing Technologies and Factors Impacting their Industrial Adoption.

Innovative food processing technologies have been widely investigated in food processing research in recent years. These technologies offer key advantages for advancing the preservation and quality of conventional foods, for combatting the growing challenges posed by globalization, increased competitive pressures and diverse consumer demands. However, there is a need to increase the level of adoption of novel technologies to ensure the potential benefits of these technologies are exploited more by the food ...

The genomic history of southeastern Europe.

Farming was first introduced to Europe in the mid-seventh millennium bc, and was associated with migrants from Anatolia who settled in the southeast before spreading throughout Europe. Here, to understand the dynamics of this process, we analysed genome-wide ancient DNA data from 225 individuals who lived in southeastern Europe and surrounding regions between 12000 and 500 bc. We document a west-east cline of ancestry in indigenous hunter-gatherers and, in eastern Europe, the early stages in the formation o...

Investigation of return photons from sodium laser beacon excited by a 40-watt facility-class pulsed laser for adaptive optical telescope applications.

The brightness of the artificial beacon is one critical performance parameter for adaptive optics. Here, a 40-watt level narrow-linewidth microsecond pulsed yellow laser is produced at 589 nm with a high repetition frequency of 600 Hz and a pulse duration of 120 μs. An experiment to project the pulse beam up to the sky and measure the fluorescence photon returns of the Na atoms has been held on the 1.8-meter telescope in Lijiang observatory. During the sky test, a laser guide star (LGS) spot is firstly...

Novel concept for visible and near infrared spectro-interferometry: laser-written layered arrayed waveguide gratings.

With the growing complexity of astronomical instruments devoted to interferometry, such as MATISSE (a 4 telescope beam combiner) or FIRST (a 9 sub-apertures beam combiner), and the rebirth of space projects such as LIFE (a mid-infrared interferometer), integrated optics devices can be an interesting and complementary approach for beam combination of a large number of apertures. Moreover, one of the approaches for beam combination is pairwise combination of the inputs (either from individual telescopes or fr...

Image registration for daylight adaptive optics.

Daytime use of adaptive optics (AO) at large telescopes is hampered by shot noise from the bright sky background. Wave-front sensing may use a sodium laser guide star observed through a magneto-optical filter to suppress the background, but the laser beacon is not sensitive to overall image motion. To estimate that, laser-guided AO systems generally rely on light from the object itself, collected through the full aperture of the telescope. Daylight sets a lower limit to the brightness of an object that may ...

Compact, circular, and optically stable multipass cell for mobile laser absorption spectroscopy.

Compact and lightweight laser absorption spectrometers for accurate trace gas measurements are of great scientific and commercial importance. In these instruments, the multipass cell (MPC) represents a critical element in terms of achievable size and sensitivity. Herein, we introduce a versatile MPC concept which unifies compactness, mechanical rigidity, and optical stability. Relying on fundamental cavity design principles and modern diamond turning techniques, we have developed a segmented circular MPC th...

Translation of innovative chemistry into screening libraries: an exemplar partnership from the European Lead Factory.

The identification of high-quality starting points for drug discovery is an enduring challenge in medicinal chemistry. Yet, the chemical space explored in discovery programmes tends be limited by the narrow toolkit of robust methods that are exploited in discovery workflows. The European Lead Factory (ELF) was established in 2013 to boost early-stage drug discovery within Europe. In this Feature, we describe an exemplar partnership that has led to the addition of 21 119 distinctive screening compounds to th...

Towards the risk of Yellow Fever transmission in Europe.

Yellow fever (YF) is an emerging expanding fatal arboviral disease that has been imported at least six times in Europe during the first half of 2018, while only seven travel-associated YF cases have been reported in the last 20 years, and none from Brazil. YF has a history of transmission in Europe which could become recurrent considering the wide globalization of competent vectors. This article argues that epidemiological current changes put Europe at risk of YF transmission. Risk assessment and strategies...

Low-order aberration correction of the TMT tertiary mirror prototype based on a warping harness.

A warping harness is proposed to simply and efficiently correct low-order aberrations that occur during manufacturing and operation of a telescope. For the Thirty Meter Telescope (TMT) tertiary mirror, the issue to be solved by the warping harness is particularly challenging due to its complicated load conditions and limited mounting space. In this study, first, a new type of whiffletree-based warping harness configuration applied to a ¼-prototype TMT tertiary mirror is presented and optimized using finite...

Which End of the Telescope Brings Trauma Triage into True Focus?

Are computational applications the "crystal ball" in the IVF laboratory? The evolution from mathematics to artificial intelligence.

Mathematics rules the world of science. Innovative technologies based on mathematics have paved the way for implementation of novel strategies in assisted reproduction. Ascertaining efficient embryo selection in order to secure optimal pregnancy rates remains the focus of the in vitro fertilization scientific community and the strongest driver behind innovative approaches. This scoping review aims to describe and analyze complex models based on mathematics for embryo selection, devices, and software most wi...

Infectious disease profiles of Syrian and Eritrean migrants presenting in Europe: A systematic review.

In the past decade, a large influx of migrants presented in Europe. Their country of origin was mainly either Syria or Eritrea. Public health institutions in host countries in Europe are challenged to screen and care for migrant populations with regard to infectious diseases.

Bounding the outcome of a two-photon interference measurement using weak coherent states.

The interference of two photons at a beam splitter is at the core of many quantum photonic technologies, such as quantum key distribution or linear-optics quantum computing. Observing high-visibility interference is challenging because of the difficulty of realizing indistinguishable single-photon sources. Here, we perform a two-photon interference experiment using phase-randomized weak coherent states with different mean photon numbers. We place a tight upper bound on the expected coincidences for the case...

The removal of DAA restrictions in Europe - one step closer to eliminating HCV as a major public health threat.

Of ∼10.2 million people with chronic HCV infection in Europe, most are living in Eastern Europe (6.7 million) followed by Western Europe (2.3 million) and Central Europe (1.2 million). HCV transmission continues to occur - mainly through injection drug use and to a lesser degree, via nosocomial transmission - in parallel with an increasing HCV-related liver disease burden, the result of an ageing population infected during peak HCV epidemics decades prior. In 2016, the World Health Organization set target...

Imaging and applied optics: introduction to the feature issue.

This special issue of Applied Optics contains selected papers from OSA's Imaging Congress with particular emphasis on work from mathematics in imaging, computational optical sensing and imaging, imaging systems and applications, and 3D image acquisition and display.

The evolutionary history of human populations in Europe.

I review the evolutionary history of human populations in Europe with an emphasis on what has been learned in recent years through the study of ancient DNA. Human populations in Europe ∼430-39kya (archaic Europeans) included Neandertals and their ancestors, who were genetically differentiated from other archaic Eurasians (such as the Denisovans of Siberia), as well as modern humans. Modern humans arrived to Europe by ∼45kya, and are first genetically attested by ∼39kya when they were still mixing with...


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