Filetype
Common harmonic oscillator topologies, such as class-B and class-C, are typically unable to meet ultra stringent phase noise requirements, due to the exceedingly large capacitance (and, symmetrically, low inductance) that would be required in the parallel resonator. In this paper, we show that an oscillator making use of series resonators is ideally able to overcome this limitation, with the addit
The spectrum emitted from a nickel hollow cathode has been recorded with a Fourier transform spectrometer. Two dense groups of lines just above 18 000 Å have been identified as the transitions 3d8 (3F)5f-3d8 (3F)6g and 3d8 (3F)5g-3d8 (3F)6h in Ni II. The level structure of the configurations involved in these transitions has been studied by fitting the Slater parameters of the energy matrices to t
A material parameter identification is presented for a fully thermo-mechanically coupled material model based on full field displacement and temperature measurements. The basic theory of the inverse problem is recapitulated, focusing on the choice of the objective function, proposing a new formulation, and explaining in detail the necessary numerical treatment of experimental data during the pre-p
We study the distribution of sequences of the form (qny)∞n=1, where (qn)∞n=1 is some increasing sequence of integers. In particular, we study the Lebesgue measure and find bounds on the Hausdorff dimension of the set of points γ ∈ [0, 1) which are well approximated by points in the sequence (qny)∞n=1. The bounds on Hausdorff dimension are valid for almost every y in the support of a measure of pos
In this report heat quantity measuring and temperature regulation of smaller heating networks have been studied. At lower flows, as well as at lower difference temperatures, the accuracy of the measurement is very low. Today's control of a heating plant endeavour to let the temperature of the water into the heating network follow the heat requirement. This control strategy leads to small heat
Understanding the spatiotemporal dynamics of dissolved organic carbon (DOC) is essential for predicting aquatic carbon fluxes and managing water quality in boreal catchments. Traditional DOC modelling approaches are limited in their ability to represent seasonal dynamics, event-driven responses, and riparian-zone contributions. Here, we evaluate the performance of the Krycklan-HYPE model in simula
World quinoa production is increasing due its high nutritional value. As a consequence, large quantities of stalks accumulate as unused byproducts. Here, we verify the presence of saponins in the stalks and present a biorefinery approach with quinoa stalks as feedstock, using an integrated processing scheme to separate saponins, xylan and cellulose. Saponins were extracted using pressurized hot wa
When developing products, engineering designers often face the problem that their candidate for a technical solution, ranging from a concept to a detailed design, needs to be analyzed by a design analyst before it is approved or rejected and the engineering designer can continue his/her activities within the product development process. If engineering designers have to send every solution candidat
With an increasing population, a growing middle class and increased resource use, our current ways of living and doing business are unsustainable. Next to the implementation of innovative technology, sustainable development based on innovative business models, better understating of customer needs and behavioural change are crucial. This research aims at combining principles from both sustainable
1 RQ08 Research Quality Assurance for the Future A Quality Review of Research at Lund University 2007/08 2 © Lund University 2008 Editors GS Boulton and B Söderström www.lu.se/forskning/utvaerdering-av-forskning---rq08 www.lu.se/lund-university/research/research-evaluation---rq08 Graphic design: Petra Francke, Corporate Communications, Lund University Cover photo: Mikael Risedal Printed by: 08 Try
https://www.lu.se/sites/www.lu.se/files/rq08_review_lund_university.pdf - 2026-06-30
Background: Fetal cardiovascular magnetic resonance (CMR) imaging may provide a valuable adjunct to fetal echocardiography in the evaluation of congenital cardiovascular pathologies. However, dynamic fetal CMR is difficult due to the lack of direct in-utero cardiac gating. The aim of this study was to investigate the effectiveness of a newly developed Doppler ultrasound (DUS) device in humans for
The development of a mathematical model and a computer program to facilitate the study of the multi-cylinder paper drying process is presented. Experimentally determined values far different heat and mass transfer coefficients are used to ensure the physical validity of the model. A unique feature of the model is its inclusion of a mass transfer coefficient for the dryer fabric. Thus far, the mass
Kursguide - Course Syllabus • • • Details of approval The syllabus was approved by the board of the Department of Service Management and Service Studies on 2015-01-27 and was last revised on 2017-01-25. The revised syllabus applies from 2017-02-01, spring semester 2017. General Information The course may not be included in a main field of study. The course is included in the second semester of the
https://www.ses.lu.se/en/sites/ses.lu.se.en/files/kp_smmr23_rev170125.pdf - 2026-06-30
Kursguide - Course Syllabus • • • Details of approval The syllabus was approved by the board of the Department of Service Management and Service Studies on 2015-01-27 and was last revised on 2017-01-25. The revised syllabus applies from 2017-02-01, spring semester 2017. General Information The course may not be included in a main field of study. The course is included in the second semester of the
https://www.ses.lu.se/en/sites/ses.lu.se.en/files/kp_smmr25_english1.pdf - 2026-06-30
Recent revisions in the sunspot records illustrate the challenges related to obtaining a 400-year-long observational record of past solar-activity changes. Cosmogenic radionuclides offer the possibility of obtaining an alternative and completely independent record of solar variability. Here, we illustrate that these records offer great potential for quantitative solar-activity reconstructions far
Microsoft Word - halvtid, blankett.doc Certificate, Halfway review for PhD-education Name of doctoral student: Personal identity number: Department: Email address: THE DOCTORAL STUDENT'S PERFORMANCE AT THE SEMINAR Component Comments and recommendation Written summary of the thesis project. Oral presentation. Discussion/handling of questions. ACTIVITY, PROGRESS AND QUALITY OF RESEARCH WORK Componen
https://www.intramed.lu.se/en/sites/intramed.lu.se.en/files/2024-11/Certificate%20half%20way%20review%20241126.pdf - 2026-06-30
Background: Emerging evidence indicates that estrogen receptor-low (ER-low)/human epidermal growth factor receptor 2 negative (HER2-) breast cancer (BC) may more closely resemble ER-negative (ER-zero, < 1%) rather than ER-positive disease in terms of biological and clinicopathological characteristics. In Sweden, ER-low (ER 1–9%) BC is managed as triple-negative breast cancer (TNBC) and is thus eli
The configuration-dependent cranked Nilsson-Strutinsky model is used to study the band structures in La-131. Shape coexistence and band termination are investigated for several configurations. The calculations indicate that La-131 is a gamma-soft nucleus. The theoretical results are compared with experimental data. The calculated pi( h(11/2))(2) circle times nu( h(11/2))(8) configuration with (pi,
he valence photoemission spectra of alkali metals exhibit multiple plasmon satellite structure. The calculated spectral functions within the GW approximation show only one plasmon satellite at too large binding energy. In this Letter we use the cumulant expansion approach to obtain the spectral functions of Na and Al from ab initio calculations including the effects of band structure. The GW spect
