1,722,868 research outputs found
Standardiserat vårdförlopp – Lymfom/KLL,hur ingången påverkar utgången, vilka kriterier som ärvanligast och vilka diagnoser patienter får istället förlymfom/KLL
No full textBakgrund: Vid välgrundad misstanke om lymfom eller KLL (kronisk lymfatisk leukemi) skapatienten utredas enligt SVF (standardiserat vårdförlopp) för lymfom/KLL. Patienten måsteuppfylla minst ett av sex kriterier för att uppnå detta. SVF-programmen infördes för att kortaväntetiderna och minska regionala skillnader inom cancervården.Syfte: Att se hur ingången i SVF-utredningen (vilket kriterium patienten uppfyllde för remiss)påverkar utgången. I studien undersöks också vilka kriterier och lymfomdiagnoser som ärvanligast, vilka diagnoser patienter får istället för lymfom och hur stor andel av patienternasom remitteras på fel grund.Metod: En retrospektiv journalgranskning genomfördes med alla patienter som remitteratsenligt SVF lymfom/KLL inom Region Örebro län från starten 2016 till november 2020 somstudiepopulation. Totalt granskades 549 journaler, 546 patienter inkluderades i resultatet.Information inhämtades om: ålder vid start av SVF, kriterium som föranledde välgrundadmisstanke om lymfom/KLL, vilken lymfomdiagnos patienten fick och vilken diagnospatienten fick vid avsaknad av lymfom/KLL. Resultat: Kriterierna som starkast korrelerade med diagnos av lymfom/KLL var lymfocytos,M-komponent i serum, och biopsi. Vanligaste lymfomdiagnosen var aggressivt Bcellslymfom(N=162, 49,5%). Vanligaste diagnosen istället för lymfom/KLL varospecificerad lymfkörtelförstoring (N=90, 50,3%). Vanligaste kriterierna för välgrundadmisstanke var bilddiagnostik (N=210, 41,7%) och biopsi (N=197, 39,1%). 42 (7,7%) avpatienterna saknade välgrundad misstanke. 45 (8,9%) patienter fick någon annancancerdiagnos än lymfom/KLL.Slutsats: Relativt många patienter remitterades på fel grund och denna andel var större hoskvinnorna. Palpabel mjälte som kriterium var mycket ovanligt och ledde inte till någonlymfom/KLL-diagnos. Om resultatet av denna studie är generaliserbart för hela landet skullekriteriet kunna rekommenderas att uteslutas
Reliability Evaluation and Fault Tolerant Design for KLL Sketches
No full textQuantile estimation is a fundamental task in big data analysis. In order to achieve high-speed estimation under low memory consumption, especially for streaming big data processing, data sketches which provide approximate estimates at low overhead are usually used, and the Karnin-Lang-Liberty (KLL) sketch is one of the most popular options. However, soft errors in KLL memory may significantly degrade estimation performance. In this paper, the influence of soft error on the KLL sketch is considered for the first time. Firstly, the reliability of KLL to soft error is studied through theoretical analysis and fault injection experiments. The evaluation results show that the errors in the KLL construction phase may cause a large deviation in the estimated value. Then, two protection schemes are proposed based on a single parity check (SPC) and on the incremental property (IP) of the KLL memory. Further evaluation shows that the proposed schemes can significantly improve the reliability of KLL, and even remove the effect SEUs on the highest bits. In particular, the SPC scheme that requires additional memory, provides better protection for middle bit positions than the IP scheme which does not introduce any memory overhead
X-ray lines close to KLL auger electron energies from Fe, Co, Ni, and Cu monocrystals
No full textBy x-ray bombardment of metal monocrystals (Fe, Co, Ni, and Cu), x-rays of KLL radiative Auger electrons (KLL RAE) can be observed on the low energy side of the Ka lines. The energies of the KLL RAE x-rays of each monocrystal are the same for different lattice planes and when different kinds of x-ray tubes. Mo, W, and Cu target tubes, are used. Therefore, the peak energies detected within the KLL Auger electron energy limit are interpreted as KLL RAE x-rays. The measured intensity ratios of KLL/Ka are about 0.3%. Additionally, the ratio of I(K/9)/I(Ka) and I(Si escape peak)/I(Ka) are measured. All of these values agree well with theoretical values. The beam shapes of KLL RAE x-rays are studied by taking pictures on x-ray films. The intensity distribution for Ni and Cu are measured by changing the crystal angle with respect to the incident x-ray beam near the Bragg angles of the KLL RAE x-rays. It is shown that the KLL RAE x-rays are very sharp and stimulated when the crystal is set at the Bragg angle of the KLL RAE with respect to the incident beam, which contains both the pumping radiation and Bremsstrahlung of frequencies in the KLL RAE range in which the KLL x-rays stimulation is achieved
Électrons Auger KLL : théorie et expérience
No full textNous présentons, dans ce travail, une mise au point de la théorie de l’émission d’électrons Auger KLL dans les différentes approximations de couplage, afin de montrer l'importance relative, en fonction de Z, des effets d’interaction électrostatique et de couplage spin-orbite. L'analyse des résultats expérimentaux montre le besoin de renseignements plus nombreux pour les valeurs élevées de Z où les doublets constituent un test de l'hypothèse du couplage intermédiaire ainsi que de la validité des extrapolations utilisées dans cette région.A cet effet, l’étude du spectre Auger KLL émis dans la désintégration [math] a été réalisée avec mise en évidence des doublets des raies KL1L2 et KL1L3
Analysis of the Be KLL Auger transition of beryllium nitride and beryllium carbide by AES
No full textSecondary phase particles of beryllium nitride and beryllium carbide in beryllium were analysed by Auger Electron Spectroscopy. Survey spectra as well as high resolution Be KLL, N KLL and C KLL transitions were collected and are presented. The primary beryllium KLL Auger transitions for the nitride and carbide were recorded at 96.7 and 100.4 eV respectively. The homogeneity and composition of the secondary phase particles was confirmed by energy dispersive x-ray spectroscopy
Analysis of the Be KLL Auger transition of beryllium nitride and beryllium carbide by AES
No full textSecondary phase particles of beryllium nitride and beryllium carbide in beryllium were analysed by Auger Electron Spectroscopy. Survey spectra as well as high resolution Be KLL, N KLL and C KLL transitions were collected and are presented. The primary beryllium KLL Auger transitions for the nitride and carbide were recorded at 96.7 and 100.4 eV respectively. The homogeneity and composition of the secondary phase particles was confirmed by energy dispersive x-ray spectroscopy
Analysis of the Be KLL Auger Transition on Beryllium and Beryllium Oxide by AES
Full text linkAs-received beryllium, beryllium scribed in vacuum and beryllium oxide were analysed by Auger Electron Spectroscopy. As-received beryllium was analysed at low and high take off angles. Spectra produced demonstrate the change in the KLL structure with increasing oxygen concentration. Survey spectra as well as high resolution Be KLL and O KLL transitions were collected and are presented
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Detailed analysis of shake structures in the KLL Auger spectrum of H2S
Full text linkShake processes of different origin are identified in the KLL Auger spectrum
of H2S with unprecedented detail. The KLL Auger spectrum is presented together
with the S 1s−1 photoelectron spectrum including the S 1s−1V−1nλ and S
1s−12p−1nλ shake-up satellites with V−1 and nλ indicating a hole in the
valence shell and an unoccupied molecular orbital, respectively. By using
different photon energies between 2476 and 4150 eV to record the KLL Auger
spectra two different shake-up processes responsible for the satellite lines
are identified. The first process is a shake-up during the Auger decay of the
S 1s−1 core hole and can be described by S 1s−1→2p−2V−1nλ. The second process
is the Auger decay of the shake-up satellite in the ionization process leading
to S 1s−1V−1nλ→2p−2V−1nλ transitions. By combining the results of
photoelectron and Auger spectra the involved V−1nλ levels are assigned
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