cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Forests, floods and channel processes : illuminating links between forest harvesting, the flood regime and channel response in snowmelt headwater streams
Creators: name: Green, Kim Cordelia
Publisher: name: University of British Columbia
Year: 2014

description: A meta-analysis of four snowmelt catchments with moderate harvest levels (30% to 40%) utilizing a frequency-based approach demonstrates, despite a century’s-worth of studies to the contrary, how harvesting increases the magnitude and frequency of all floods on record including the largest floods (R.I. = 1:50 yrs.) and how such effects increase unchecked with increasing return period as a consequence of changes to both the mean and standard deviation of the flood frequency distribution. Additionally, meta-analysis outcomes reveal up to three-fold increases in the number and duration of peak flows with return periods ranging from 0.6*Q₁.₅ to Q₁₀, which includes floods capable of mobilizing bedload and altering the form of gravel-bed streams. A frequency-based meta-analysis provides new insights concerning the physical processes governing the relation between forests and floods in snowmelt environments that were previously unrecognized using traditional chronological-pairing methods. The dominant process responsible for flood regime changes following harvesting is the increase in basin-average snowmelt rates that are amplified or mitigated by physical characteristics such as aspect distribution, elevation range, slope gradient and amount of alpine area. The outcomes of a high-resolution, nested-monitoring investigation of hydrologic and geomorphic controls on bedload mobility indicate that flow regime changes from harvesting in snowmelt streams can alter rates of bedload transport, a first-order determinant of channel form in fluvial systems. Regression analysis shows that annual sediment yield is controlled by the number of peaks-over-threshold discharge. During peak events, repeated destabilization of channel armor and re-mobilization of sediment temporarily stored behind LWD generates bedload transport across the entire snowmelt season. However, the potential for channel response to changes in the flow regime depends on characteristics of channel morphology. Study results indicate that patterns of bedload entrainment and mobility are influenced by flow resistance associated with channel form, grain size and LWD while the value of the critical dimensionless shear stress varies with channel gradient, relative and absolute grain effects and flow resistance. Differences in bed texture, gradient and channel form contributes to variations in rates and characteristics of bed mobility, hence differences in potential for alteration due to changes in the flow regime.
High-Performance CMOS-Compatible Micromachined
Edge-Suspended Coplanar Waveguides on Low-
Resistivity Silicon Substrate
Creators: name: Leung, Lydia L. W.
name: Zhang, Jinwen
name: Hon, Wai Cheong
name: Chen, Kevin J.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: This paper reports a novel low-loss CMOScompatible
coplanar waveguide (CPW) structure based on the
micromachined edge-suspension of the signal line. It is
revealed that, at radio or microwave frequencies, the current
is highly concentrated along the edges of the signal line. Since
the coupling to the low resistivity silicon substrate is
dominated by the current carrying part, the substrate
coupling and loss can be effectively suppressed by removing
the silicon along and underneath the edges of the signal lines.
The edge-suspended structure has been implemented by a
combination of deep reactive ion etching and anisotropic wet
etching. The suspended structure shows much reduced loss
(0.5 dB/mm at 39 GHz) and strong mechanical strength that is
provided by the silicon underneath the center of the signal line.
Impact of PDF uncertainties at large x on heavy boson production
Creators: name: Brady, L. T.
name: Accardi, A.
name: Melnitchouk, W.
name: Owens, J. F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We explore the sensitivity of W and Z boson production in hadronic collisions to uncertainties in parton distribution functions (PDFs) at large x arising from uncertainties in nuclear corrections when using deuterium data in global QCD fits. The W and Z differential cross sections show increasing influence of nuclear corrections at high boson rapidities, particularly for the d quark, which is diluted somewhat in the decay lepton rapidity distributions. The effects of PDF uncertainties on heavy W' and Z' bosons beyond the Standard Model become progressively more important for larger boson masses or rapidities, both in p-p collisions at the LHC and in p-pbar scattering at the Tevatron.
description: 23 pages, 9 figures; to appear in JHEP
Die historische, prothetische Sammlung des Zentrums für Zahn-, Mund- und Kieferheilkunde der Martin-Luther-Universität Halle-Wittenberg
Creators: name: Godau, Kerstin
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2005
Subjects: subject: Elektronische Publikation
subject: Zsfassung in engl. Sprache
subject: 617.69

description: Im Rahmen der Umbauarbeiten der Zahnklinik war es notwendig die sich bis dato dort befindliche prothetische Sammlung umzulagern und neu zu strukturieren. Die Sammlung war aufgrund einer fehlenden Strukturierung und eines nichtvorhandenen Inhaltsverzeichnisses in keinster Weise sowohl wissenschaftlich als auch für die Studentenausbildung nutzbar. Die Aufgabe bestand nun darin, ein den wissenschaftlichen Ansprüchen genügendes Archiv aus der bestehenden prothetischen Sammlung unter Nutzung modernster Kommunikationstechniken zu erstellen. Zu diesem Zwecke wurden die Ausstellungsstücke umgelagert, gesäubert und soweit notwendig rekonstruiert. Anschließend wurden sie fotografiert und in einer PowerPoint-Datei untergebracht. Es erfolgte eine Einordnung der Exponate in vier Hauptgebiete der Prothetik (Totalprothetik, Teilprothetik, Werkstoff- und Materialkunde und Artikulationslehre). Es schlossen sich aufwendige Recherchearbeiten in Büchern, Zeitschriften der damaligen Zeit an. Diese führten zu einer Benennung und einer übersichtliche Beschreibung des Exponates. Es entstand eine Archivierungsdokumentation in Bild- und Schriftform. Das auf CD-Rom gespeichert Archiv kann von jederman eingesehen und genutzt werden. Aufgrund einer entsprechenden Systematisierung des Aufbewahrungsortes und einer übersichtlichen Zugangsmöglichkeit stellt es keine Schwierigkeit dar, das entsprechende Exponat herauszusuchen und für wissenschaftliche Arbeiten oder zu Lehrzwecken zu verwenden. Auch ist es für auswärtige Interessenten möglich dieses historische Erbe zu nutzen.
description: Due to the reconstruction of the dental clinic it had become necessary to rearrange the prosthetic collection. Because of a non-existing table of contents and structuring, the collection had been useable neither for scientific research nor for educational purposes. The taste was now to construct an archive of the prosthetic collection sufficient to scientific demands while using newest techniques of communications. For this end the exhibits were relocated, cleaned an, if necessary, restored. Afterwards they were photographed and stored in a Power-Point file. The exhibits were classified into four main areas of prosthetics (full set, partial denture, materials an Articulator construction). Followed by intense researches in books and magazines of that time it was then possible to name and describe the exhibits. Thus, a documentation of the archive in pictures and writings was developed. The archives are saved on CD and are accessable by anyone even for foreign prospective customers who are interested in the historical exhibits. Now, due to an orderly arrangement of the repository, it is not difficult to search for certain exhibits to use them for scientific work or for educational purposes.
Figure S6 from The histone deacetylase NlHDAC1 regulates both female and male fertility in the brown planthopper, Nilaparvata lugens.
Creators: name: Zhang, Jin-Li
name: Yuan, Xiao-Bo
name: Chen, Sun-Jie
name: Chen, Hao-Hao
name: Xu, Nan
name: Xue, Wen-Hua
name: Fu, Sheng-Jie
name: Zhang, Chuan-Xi
name: Xu, Hai-Jun
Publisher: name: The Royal Society
Year: 2018

description: Histone acetylation is a specific type of chromatin modification that serves as a key regulatory mechanism for many cellular processes in mammals. However, little is known about its biological function in invertebrates. Here, we identified 12 members of histone deacetylases (NlHDACs) in the brown planthopper (BPH), Nilaparvata lugens. RNAi-mediated silencing assay showed that NlHdac1, NlHdac3 and NlHdac4 played critical roles in female fertility via regulating ovary maturation or ovipositor development. Silencing of NlHdac1 substantially increased acetylation level of histones H3 and H4 in ovaries, indicating NlHDAC1 is the main histone deacetylase in ovaries of BPH. RNA sequencing (RNA-seq) analysis showed that knockdown of NlHdac1 impaired ovary development via multiple signalling pathways including the TOR pathway. Acoustic recording showed that males with NlHdac1 knockdown failed to make courtship songs, and thus were unacceptable to wild-type females, resulting in unfertilized eggs. Competition mating assay showed that wild-type females overwhelmingly preferred to mate with control males over NlHdac1-knockdown males. These findings improve our understanding of reproductive strategies controlled by HDACs in insects and provide a potential target for pest control.
Intersubband polaritonics revisited
Creators: name: Kyriienko, Oleksandr
name: Shelykh, Ivan A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We revisited the intersubband polaritonics - the branch of mesoscopic physics having a huge potential for optoelectronic applications in the infrared and terahertz domains - and found that, contrary to the general opinion, the Coulomb interactions play crucial role in the processes of light-matter coupling in the considered systems. Electron-electron and electron-hole interactions radically change the nature of the elementary excitations in these systems. We show that intersubband polaritons represent the result of the coupling of a photonic mode with collective excitations, and not non-interacting electron-hole pairs as it was supposed in the previous works on the subject.
Additional file 1 of Community-based screening of Chagas disease among Latin American migrants in a non-endemic country: an observational study
Creators: name: Ramos-Sesma, Violeta
name: Navarro, Miriam
name: Llenas-García, Jara
name: Gil-Anguita, Concepción
name: Torrus-Tendero, Diego
name: Wikman-Jorgensen, Philip
name: García-López, María
name: Amador-Prous, Concepción
name: Ventero-Martín, María-Paz
name: Guevara-Hernández, Pedro
name: Garijo-Saiz, Ana
name: Sanchez-Sanchez, Ares
name: Bernal-Alcaraz, Cristina
name: Pujades-Tarraga, Ana-Isabel
name: Muñoz-Perez, Roser
name: Flores-Chávez, María
name: Ramos-Rincón, José-Manuel
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Figure S1. Map of the region showing the three cities where the community-based screening campaigns were performed. In 2016 and 2017 the program was held in Alicante city (setting A) and in 2018, the campaign was scaled up into two primary healthcare centers in Callosa d’en Sarrià, a city located about 40 km north of Alicante city (setting B) and Álvarez de la Riva in Orihuela, which is 60 km to the south (setting C). Figure S2. Participant flow chart. File S1. Questionnaire given to participants with sociodemographic data, epidemiological risk factors for T.cruzi infection, knowledge and beliefs on CD (Spanish version). File S2. STROBE Statement—Checklist of items that should be included in reports of cross-sectional studies. Table S1. Knowledge about Chagas diseases (CD) by sex and educational level. Table S2. Level of knowledge according to sociodemographic factors.
Additional file 2: of A single bacterium restores the microbiome dysbiosis to protect bones from destruction in a rat model of rheumatoid arthritis
Creators: name: Pan, Hudan
name: Guo, Ruijin
name: Ju, Yanmei
name: Wang, Qi
name: Zhu, Jie
name: Xie, Ying
name: Zheng, Yanfang
name: Li, Ting
name: Liu, Zhongqiu
name: Lu, Linlin
name: Li, Fei
name: Tong, Bin
name: Xiao, Liang
name: Xu, Xun
name: Leung, Elaine
name: Li, Runze
name: Yang, Huanming
name: Wang, Jian
name: Zhou, Hua
name: Jia, Huijue
name: Liu, Liang
Publisher: name: figshare
Year: 2019
Subjects: subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Ecology
subject: Sociology
subject: FOS: Sociology

description: Figure S2. The growth states of CMC-Na or MRS pretreated L. casei after culturing for 48â h in MRS agar. (PDF 29 kb)
A 22-GHz Ultra Low Phase Noise Push-Push
Dielectric Resonator Oscillator Using MMICs
Creators: name: Chang, Hong-Yeh
name: Wang, Huei
name: Wang, Yu-Chi
name: Chao, P. C.
name: Chen, Chung-Hsu
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: In this paper, we present a 22-GHz ultra low
phase noise push-push dielectric resonator oscillator (DRO)
using MMICs fabricated by 2- m GaAs HBT process. 
This circuit demonstrated a low phase noise of -114 dBc/Hz and -134 dBc/Hz at offset frequency of 100 kHz and 1 MHz,
respectively. The second harmonic output power is above 6
dBm with a fundamental suppression of over 30 dBc. This
DRO exhibits good phase noise performance based on the
figure-of-merit carrier frequency, offset frequency, and dc
power compared with the reported push-push DRO, which
is due to low 1/f noise HBT and reproducible MMIC chips.
In addition, this is the first reported push-push DRO
implemented using MMICs.
Radiative corrections in nucleon time-like form factors measurements
Creators: name: Van de Wiele, Jacques
name: Ong, Saro
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The completely general radiative corrections to lowest order, including the final and initial state radiations, are studied in proton-antiproton annihilation to an electron-positron pair. Numerical estimates have been made in a realistic configuration of the PANDA detector at FAIR for the proton time-like form factors measurements.
description: 17 pages, 10 figures
Millimetre-wave MMIC packaging compatible with
surface-mount technology (SMT)
Creators: name: Galière, J.
name: Valard, J.L.
name: Estèbe, E.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: This paper presents an interconnect and packaging solution for millimetre-wave MMIC, based on collective wiring and surface mount technologies. 
The designed structure consists of an SMT CSP (Chip Scale
Package) mounted on printed circuit board (PCB). 
This packaging concept has been applied to a millimetre-wave
LNA and has been measured up to 60 GHz, exhibiting
results close to bare die measurements (insertion loss per
millimetre-wave transition lower than 0.5dB) and
demonstrating the potential of this technology up to V-band.
Additional file 1 of Factors associated with access to assistive technology and telecare in home-dwelling people with dementia: baseline data from the LIVE@Home.Path trial
Creators: name: Puaschitz, Nathalie Genevieve
name: Jacobsen, Frode Fadnes
name: Mannseth, Janne
name: Angeles, Renira Corinne
name: Berge, Line Iden
name: Gedde, Marie Hidle
name: Husebo, Bettina Sandgathe
Publisher: name: figshare
Year: 2021
Subjects: subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Additional file 1. Description on available assistive technology and telecare devices among 154 people with dementia with accessible data, and information over devices offered by the three municipalities A-C.
Floating-Body Effects in AlGaN/GaN Power HFETs
Creators: name: Nuttinck, S.
name: Pinel, S.
name: Gebara, E.
name: Laskar, J.
name: Harris, M.
name: Shealy, J.R.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: ING-INF/01 Elettronica

description: AlGaN/GaN power HFETs grown on a 200nm thick AlN sub-buffer layer are investigated. The presence of a steady kink in the static and dynamic drain-to-source current characteristics is attributed to floating-body (FB) effects that result from the AlN sub-buffer layer. A method to extract the off-state body-to-source voltage (VBS) is applied and the coherence of the results confirms that FB effects are present in this type of structures. To our knowledge, this is the first time that floating-body effects are reported and modeled in AlGaN/GaN HFETs.
Glassy Critical Points and Random Field Ising Model
Creators: name: Franz, Silvio
name: Parisi, Giorgio
name: Ricci-Tersenghi, Federico
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We consider the critical properties of points of continuous glass transition as one can find in liquids in presence of constraints or in liquids in porous media. Through a one loop analysis we show that the critical Replica Field Theory describing these points can be mapped in the $ϕ^4$-Random Field Ising Model. We confirm our analysis studying the finite size scaling of the $p$-spin model defined on sparse random graph, where a fraction of variables is frozen such that the phase transition is of a continuous kind.
description: The paper has been completely revised. A completely new part with simulations of a p-spin glass model on random graph has been included. An appendix with the Mathematica worksheet used in the calculation of the diagrams has also been added
Additional file 1 of Clinical course and predictors of 60-day mortality in 239 critically ill patients with COVID-19: a multicenter retrospective study from Wuhan, China
Creators: name: Xu, Jiqian
name: Yang, Xiaobo
name: Yang, Luyu
name: Zou, Xiaojing
name: Wang, Yaxin
name: Wu, Yongran
name: Zhou, Ting
name: Yuan, Yin
name: Qi, Hong
name: Fu, Shouzhi
name: Liu, Hong
name: Xia, Jia’an
name: Xu, Zhengqin
name: Yu, Yuan
name: Li, Ruiting
name: Ouyang, Yaqi
name: Wang, Rui
name: Ren, Lehao
name: Hu, Yingying
name: Xu, Dan
name: Zhao, Xin
name: Yuan, Shiying
name: Zhang, Dingyu
name: Shang, You
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Environmental Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Science Policy
subject: Mental Health
subject: Virology
subject: Computational Biology

description: Additional file 1: S1. Symptoms of 239 critically ill patients with COVID-19.
Gallium Nitride on Silicon HEMTs for Wireless Infrastructure Applications, Thermal Design and Performance
Creators: name: Singhal, S.
name: Brown, J.D.
name: Borges, R.
name: Piner, E.
name: Nagy, W.
name: Vescan, A.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: ING-INF/01 Elettronica

description: GaN HEMTs are being touted as the next generation microwave power transistor. Many research groups have reported outstanding DC and RF results on small periphery devices. However, the data on larger devices is somewhat limited. This paper will present results on large periphery devices (18 mm total gate width). Results from DC, RF and Linearity measurements will be presented. In addition a detailed thermal analysis based on simulation and measurement will be discussed. To our knowledge this is the first time the thermal characteristics of large periphery GaN -on-Si devices has been presented. Finally, the thermal model is used to study the thermal performance of these devices on different substrates. The results illustrate that GaN-on-Si is a viable approach for handling the large thermal dissipation requirements of microwave power transistors.
Additional file 3 of Mapping regulatory variants controlling gene expression in drought response and tolerance in maize
Creators: name: Liu, Shengxue
name: Li, Cuiping
name: Wang, Hongwei
name: Wang, Shuhui
name: Yang, Shiping
name: Liu, Xiaohu
name: Yan, Jianbing
name: Li, Bailin
name: Beatty, Mary
name: Zastrow-Hayes, Gina
name: Song, Shuhui
name: Qin, Feng
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 3. Review history.
Geometric reconstruction methods for electron tomography
Creators: name: Alpers, Andreas
name: Gardner, Richard J.
name: König, Stefan
name: Pennington, Robert S.
name: Boothroyd, Chris B.
name: Houben, Lothar
name: Dunin-Borkowski, Rafal E.
name: Batenburg, Kees Joost
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Electron tomography is becoming an increasingly important tool in materials science for studying the three-dimensional morphologies and chemical compositions of nanostructures. The image quality obtained by many current algorithms is seriously affected by the problems of missing wedge artefacts and nonlinear projection intensities due to diffraction effects. The former refers to the fact that data cannot be acquired over the full $180^\circ$ tilt range; the latter implies that for some orientations, crystalline structures can show strong contrast changes. To overcome these problems we introduce and discuss several algorithms from the mathematical fields of geometric and discrete tomography. The algorithms incorporate geometric prior knowledge (mainly convexity and homogeneity), which also in principle considerably reduces the number of tilt angles required. Results are discussed for the reconstruction of an InAs nanowire.
High Power Performances of AlGaN/GaN HEMTs On Sapphire Substrate At F=4GHz
Creators: name: Vellas, N.
name: Gaquiere, C.
name: Guhel, Y.
name: Werquin, M.
name: Ducatteau, D.
name: Boudart, B.
name: De Jaeger, J.C.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: ING-INF/01 Elettronica

description: The high potential at microwave frequencies of AlGaN/GaN HEMTs on sapphire substrate for power application has been demonstrated in this paper. An output power density close to 5W/mm has been measured on a 2x25x0.5µm² HEMT on sapphire substrate. This result is very interesting because the devices have not been passivated. At present time, it is the best power result in Europe on this substrate.
Noninvasiveness and time symmetry of weak measurements
Creators: name: Bednorz, Adam
name: Franke, Kurt
name: Belzig, Wolfgang
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Measurements in classical and quantum physics are described in fundamentally different ways. Nevertheless, one can formally define similar measurement procedures with respect to the disturbance they cause. Obviously, strong measurements, both classical and quantum, are invasive -- they disturb the measured system. We show that it is possible to define general weak measurements, which are noninvasive: the disturbance becomes negligible as the measurement strength goes to zero. Classical intuition suggests that noninvasive measurements should be time symmetric (if the system dynamics is reversible) and we confirm that correlations are time-reversal symmetric in the classical case. However, quantum weak measurements -- defined analogously to their classical counterparts -- can be noninvasive but not time symmetric. We present a simple example of measurements on a two-level system which violates time symmetry and propose an experiment with quantum dots to measure the time-symmetry violation in a third-order current correlation function.
description: 19 pages, 5 figures, more information at http://www.fuw.edu.pl/~abednorz/tasym/
Additional file 2 of Factors associated with access to assistive technology and telecare in home-dwelling people with dementia: baseline data from the LIVE@Home.Path trial
Creators: name: Puaschitz, Nathalie Genevieve
name: Jacobsen, Frode Fadnes
name: Mannseth, Janne
name: Angeles, Renira Corinne
name: Berge, Line Iden
name: Gedde, Marie Hidle
name: Husebo, Bettina Sandgathe
Publisher: name: figshare
Year: 2021
Subjects: subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Additional file 2. Baseline characteristics of 202 people with dementia with access to assistive technology and telecare, stratified by severity of dementia.
Q-Band Monolithic GaAs PHEMT Low Noise Amplifiers: Comparative Study of Depletion and Enhancement Mode Transistors
Creators: name: Aja, B.
name: De La Fuente, L.
name: Pascual, J.P.
name: Cryan, M.
name: Artal, E.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: ING-INF/01 Elettronica

description: Two Q-band monolithic low noise amplifiers have been designed and characterized. A study about depletion and enhancement mode HEMTs with the same technology has been performed in order to apply these results to the design of the low noise amplifiers. These circuits have been developed for being used in the Back End module of the radiometers in the European Scientific mission Planck, because there are not commercial circuits available in this frequency band. The main goals for these amplifiers are low noise with a small DC consumption. A minimum noise figure of 2.8 dB with an associated gain of 23.1 dB at 40.4 GHz has been measured for the E-HEMT MMIC LNA and its DC current consumption was 15.4 mA. The D-HEMT MMIC LNA has a minimum noise figure of 3 dB with an associated gain of 23.2 dB at 42 GHz and 30 mA of DC current consumption.
HEMT's Design for Applications beyond 100GHz
Creators: name: Bollaert, S.
name: Parenty, T.
name: Wallart, X.
name: Happy, H.
name: Dambrine, G.
name: Cappy, A.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: ING-INF/01 Elettronica

description: Non disponibile - not available
Non-Gaussian structure of the lensed CMB power spectra covariance matrix
Creators: name: Benoit-Lévy, Aurélien
name: Smith, Kendrick M.
name: Hu, Wayne
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Gravitational lensing of the Cosmic Microwave Background (CMB) encodes cosmological information in the observed anisotropies of temperature and polarization. Accurate extraction of this additional information requires precise modeling of the covariance matrix of the power spectra of observed CMB fields. We introduce a new analytical model to describe the non-Gaussian structure of this covariance matrix and display the importance of second-order terms that were previously neglected. When compared with direct numerical simulations our model captures parameter errors to better than a few percent for cases where the non-Gaussianity causes an order unity degradation in errors. We also provide a detailed comparison between the information content of lensed CMB power spectra and ideal reconstruction of the lensing potential. We illustrate the impact of the non-Gaussian terms in the power spectrum covariance by providing Fisher errors on the sum of the masses of the neutrinos, the dark energy equation of state, and the curvature of the Universe.
description: Modified to match published version. References added
Additional file 3 of Factors associated with access to assistive technology and telecare in home-dwelling people with dementia: baseline data from the LIVE@Home.Path trial
Creators: name: Puaschitz, Nathalie Genevieve
name: Jacobsen, Frode Fadnes
name: Mannseth, Janne
name: Angeles, Renira Corinne
name: Berge, Line Iden
name: Gedde, Marie Hidle
name: Husebo, Bettina Sandgathe
Publisher: name: figshare
Year: 2021
Subjects: subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Additional file 3. Regression plot. Illustrates the association between assistive technology and telecare with dementia severity in home-dwelling people with dementia. The y-axeis demonstrates the probability (OR) and 95% confidence interval of having installed assistive technology and telecare , while the x-axis presents the severity of dementia (referring to the MMSE total score). The model is stratified by tertiles of age groups and adjusted for sex. The p-value is calculated by comparing agegroups 79-86 yeras and 86-97 years with the agegroup 66-79 years.
Additional file 2 of Incidence and missed diagnosis risk of occult posterior malleolar fractures associated with the tibial shaft fractures: a systematic review
Creators: name: Wang, Zhongzheng
name: Chen, Wei
name: Zhu, Yanbin
name: Tian, Siyu
name: Zhao, Kuo
name: Guo, Jialiang
name: Hou, Zhiyong
name: Zhang, Qi
name: Zhang, Yingze
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: Additional file 2. Methodological Quality Assessment.
Low Power Single-Ended Active Frequency Doubler for a 60 GHz-Band Application
Creators: name: Masuda, Toru
name: Landen, Lars
name: Zirath, Herbert
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: ING-INF/01 Elettronica

description: The design and characterization of a 28-56 GHz frequency doubler based on a commercial foundry GaAs pHEMT process is described. To realize low power consumption and high conversion gain with small input power at the same time, we employed a simple circuit topology composed of a single-ended active frequency doubler and a frequency selective buffer amplifier. The doubler chip occupies 2 mm 2 chip area and delivers 4 dBm with an input power of 0 dBm. The excellent unwanted harmonics suppression of 29 dB and low power operation of 40 mW were obtained.
A new polyoxygenated abietane diterpenoid from the rattans of Bauhinia championii (Benth.) Benth
Creators: name: Hua, Li-Ping
name: Zhang, Yu-Qin
name: Ye, Miao
name: Xu, Wen
name: Wang, Xiao-Ying
name: Fu, Yan-Hui
name: Xu, Wei
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biochemistry
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified

description: A new polyoxygenated abietane diterpenoid, bauchampine A (1), together with seven known compounds (2–8), were isolated from the rattans of Bauhinia championii (Benth.) Benth. The structure of 1 was elucidated by extensive spectroscopic methods and the known compounds were identified by comparison with the data reported in the literature. New compound 1 was evaluated for its anti-rheumatoid arthritis activity via examining its anti-proliferative effect on synoviocytes in vitro. Compound 1 exhibited inhibitory effect on the proliferation of synoviocytes with IC50 value comparable to that of methotrexate.
Coplanar High Performance MMICs in MHEMT and PHEMT Technology for Applications up to 100 GHz
Creators: name: Schwörer, C.
name: Tessmann, A.
name: Leich, M.
name: Leuther, A.
name: Kudszus, S.
name: Bessemoulin, A.
name: Schlechtweg, M.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: ING-INF/01 Elettronica

description: In this paper we present coplanar MMICs based on both, metamorphic (MHEMT) and pseudomorphic (PHEMT) high electron mobility transistor technologies. Starting with a modulator-driver MMIC for optical transmission systems, we describe state of the art MMICs like a 94 GHz low-noise amplifier, a 35 GHz and a 60 GHz medium power amplifier and finally we demonstrate the feasibility of a monolithically integrated 94 GHz single-chip FMCW radar sensor.
A Converter MMIC with Integrated LO Amplifier and Doubler
Creators: name: Bös, Thomas A.
name: Satoh, Tomio
name: Kajii, Kiyoshi
name: Camargo, E.
name: Hasegawa, Yuichi
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: ING-INF/01 Elettronica

description: A highly linear converter MMIC with integrated LO amplifier and doubler is presented. Operating from a single 5V supply, the converter achieves 8 dB conversion loss as upconverter and 10dB as downconverter over the 21 – 32 GHz frequency band. With an IM3 suppression of – 50 dBc for Pin = 0 dBm, the converters are attractive for LMDS systems requiring high linearity.
Additional file 10 of Antifungal prophylaxis for prevention of COVID-19-associated pulmonary aspergillosis in critically ill patients: an observational study
Creators: name: Hatzl, Stefan
name: Reisinger, Alexander C.
name: Posch, Florian
name: Prattes, Juergen
name: Stradner, Martin
name: Pilz, Stefan
name: Eller, Philipp
name: Schoerghuber, Michael
name: Toller, Wolfgang
name: Gorkiewicz, Gregor
name: Metnitz, Philipp
name: Rief, Martin
name: Prüller, Florian
name: Rosenkranz, Alexander R.
name: Valentin, Thomas
name: Krause, Robert
name: Hoenigl, Martin
name: Schilcher, Gernot
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 10. 90-day ICU survival according to antifungal prophylaxis
A tiny and fully integrated differential VCO for LMDS application
Creators: name: Cortese, P.
name: Camiade, M.
name: Domnesque, D.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: ING-INF/01 Elettronica

description: A fully integrated GaAs HBT dual frequency VCO providing a high frequency 18 GHz signal but also a half-frequency 9 GHz signal to a PLL is described. The key advance is achieving good phase noise performance, over a wide frequency band, with very good temperature behaviour and harmonics suppression, at a low cost and small size. More than 3 GHz tuning range is achieved at the 18 GHz port, with 25 dB suppression of fundamental frequency (9 GHz).The 18 GHz VCO yields 5 dBm output power, while on the 9 GHz port it shows more than –10 dBm output power. The chip was assembled in a test jig, then a phase noise of –95 dBc/Hz @ 100 kHz offset was obtained at 9 GHz.
Figure S4 from The histone deacetylase NlHDAC1 regulates both female and male fertility in the brown planthopper, Nilaparvata lugens
Creators: name: Zhang, Jin-Li
name: Yuan, Xiao-Bo
name: Chen, Sun-Jie
name: Chen, Hao-Hao
name: Xu, Nan
name: Xue, Wen-Hua
name: Fu, Sheng-Jie
name: Zhang, Chuan-Xi
name: Xu, Hai-Jun
Publisher: name: The Royal Society
Year: 2018

description: Histone acetylation is a specific type of chromatin modifications that serves as a key regulatory mechanism for many cellular processes in mammals. However, little is known about its biological function in invertebrates. Here, we identified 12 members of histone deacetylases (NlHDACs) in the brown planthopper (BPH), Nilaparvata lugens. RNAi-mediated silencing assay showed that the NlHdac1, NlHdac3 and NlHdac4 played critical roles in female fertility via regulating ovary maturation or ovipositor development. Silencing of NlHdac1 substantially increased acetylation level of histones H3 and H4 in ovaries, indicating NlHDAC1 is the main histone deacetylase in ovaries of BPH. RNA sequencing (RNA-seq) analysis showed that knockdown of NlHdac1 impaired ovary development via multiple signalling pathways including the TOR pathway. Acoustic recording showed that males with NlHdac1 knockdown failed to make courtship songs, and thus were unacceptable to wild-type females, resulting in unfertilized eggs. Competition mating assay showed that wild-type females overwhelmingly preferred to mate with control males over NlHdac1-knockdown. These findings improve our understanding of reproductive strategies controlled by HDACs in insects and provide a potential target for pest control.
Quantum gravity in Heisenberg representation and self-consistent theory of gravitons in macroscopic spacetime
Creators: name: Vereshkov, Grigory
name: Marochnik, Leonid
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The first mathematically consistent exact equations of quantum gravity in the Heisenberg representation and Hamilton gauge are obtained. It is shown that the path integral over the canonical variables in the Hamilton gauge is mathematically equivalent to the operator equations of quantum theory of gravity with canonical rules of quantization of the gravitational and ghost fields. In its operator formulation, the theory can be used to calculate the graviton S-matrix as well as to describe the quantum evolution of macroscopic system of gravitons in the non-stationary Universe or in the vicinity of relativistic objects. In the S-matrix case, the standard results are obtained. For problems of the second type, the original Heisenberg equations of quantum gravity are converted to a self-consistent system of equations for the metric of the macroscopic spacetime and Heisenberg operators of quantum fields. It is shown that conditions of the compatibility and internal consistency of this system of equations are performed without restrictions on the amplitude and wavelength of gravitons and ghosts. The status of ghost fields in the various formulations of quantum theory of gravity is discussed.
description: 15 pages; v2: Expanded explanation of the reasons why the vast majority of papers on the quantum theory of gravitons published in 1977-2008 is erroneous
Ossäres und intraartikuläres Heilverhalten zweier verschiedener mittels β-TCP "press fit" fixierter Kreuzbandplastiken in einer Schafstudie
Creators: name: Fraedrich, Franz Otto
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2011
Subjects: subject: Online-Publikation
subject: Hochschulschrift
subject: 617

description: Im Lauf der Geschichte der Kreuzbandchirurgie wurden bereits viele Methoden und Techniken bezüglich der Wahl der Sehnentransplantate und deren knöcherner Fixierung untersucht und diskutiert. Bis zum heutigen Tage ist keine ideale Methode bezüglich der Transplantatfixierung gefunden worden. In dieser Studie sollte eine primär belastungsstabile „press fit“-Fixierung zweier verschiedener autologer Bandplastiken mittels eines Passzylinders (Durchmesser = 7 mm; Länge = 25 mm) aus mikroporösem (5 μm), interkonnektierendem β-Tricalciumphosphat (β-TCP) untersucht werden. Für drei postoperative Standzeiten (6, 12 und 24 Wochen) wurde an jeweils 14 randomisiert zugeteilten Schafen ein Kreuzbandersatz durchgeführt. Für jeden Standzeitraum erhielten jeweils 7 Schafe ein Patellasehnentransplantat und 7 Schafe ein Flexorsehnentransplantat. Nach der jeweiligen Standzeit erfolgte die vergleichende histologische und histomorphometrische Auswertung der beiden Transplantate. Sowohl die Flexorsehne als auch die Patellasehne wurde im zeitlichen Verlauf komplett ossär integriert. Das Patellasehnentransplantat zeigte lediglich ein zeitlich schnelleres Integrations- und Remodellingverhalten. Nach 24 Wochen zeigten sich histologisch keine Unterschiede mehr zwischen den Transplantaten. Das verwendete β-TCP erwies sich als osteokonduktiv, resorbier und wurde knöcherne ersetzt. Sowohl der Integrations- und Remodellingprozess der Transplantate als auch die Biodegradation des β-TCP waren nach 24 Wochen noch nicht abgeschlossen. Das verwendete mikroporöse, interkonnektierende β-TCP-Implantat ist somit für die „press fit“-Fixierung von autologen Sehnentransplantaten mit und ohne Knochenblöcke geeignet.
Species discovery and evolutionary history of marine gregarine apicomplexans
Creators: name: Wakeman, Kevin C.
Publisher: name: University of British Columbia
Year: 2014

description: Gregarine apicomplexans are a diverse but poorly understood group of single-celled parasites infecting a wide range of invertebrates in marine, freshwater and terrestrial environments. My thesis focuses on marine gregarines. Gregarines from marine hosts are unique because some (archigregarines) have maintained a set of pleisiomorphic characteristics from the ancestor of gregarines and apicomplexans alike. Other lineages of marine gregarines (eugregarines) are thought to have been modified from this archigregarine morphotype, and represent a wide-range of diversity with regard to general morphology, motility, and feeding strategies. My work has broadly applied molecular phylogenetics to novel species of marine gregarines from areas around British Columbia, Canada and Okinawa, Japan, with the goal of placing the evolution of gregarines in a molecular phylogenetic context. I amplified mainly SSU rDNA from a distinct life history stage (trophozoites), and coupled that with morphological data I gathered from light, confocal, as well as electron microscopy. Although my work was unable to resolve deep phylogenetic relationships among gregarines (and apicomplexans), this work did improve our understanding of evolution within gregarines. With the discovery of Veloxidium leptosynaptae from the gut of an echinoderm in Bamfield, British Columbia, and Surculinium glossobalanae from a hemichordate in Okinawa, I was able to show the paraphyly of the archigregarine morphotype, and polyphyly of other gregarine lineages, including some groups of neogregarines and eugregarines in terrestrial and freshwater environments. With the description Polyplicarium, my work uncovered and identified an ambiguous environmental sequence clade and, along with other work on Selenidium, was able to show that SSU rDNA can be reliably isolated from single cells as a method for delimiting closely related or morphologically similar species. In my final data chapter, I conducted an in-depth study on the morphology and molecular phylogenetic relationships between two sister species from the same host, Selenidium terebellae, and a newly discovered species, Selenidium melitzanae. Results from this data gave me the first opportunity to compare character evolution and niche partitioning among closely related gregarines, and provided another example of convergence of the eugregarine morphotype.
Light emission spectra of commercial pseudomorphic HEMTs biased in the impact ionization regime
Creators: name: Cova, Paolo
name: Chioato, Elena
name: Conti, P.
name: Dall'Aglio, Sandra
name: Fantini, F.
name: Manfredi, Manfredo
name: Menozzi, Roberto
name: Necchi, Riccardo
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1994
Subjects: ING-INF/01 Elettronica

description: The aim of this investigation is to study hot electron phenomena leading to impact ionization and light emission in commercial InGaAs-channel pseudomorphic HEMTs. Optical measurements have been performed at several temperatures by rneans of a single-photon counting technique in the range 1.1 eV - 3.0 eV, while biasing the devices in the impact ionization regime. The observed spectra show a sharp peak that denotes band-to-band recombinations of cold carriers and a high energy tail corresponding to hot electron transitions.
Seiberg-Witten invariants of 3-orbifolds and non-Kähler surfaces
Creators: name: Chen, Weimin
Publisher: name: arXiv
Year: 2011
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: A formula is given which computes the Seiberg-Witten invariant of a 3-orbifold from the invariant of the underlying manifold. As an application, we derive a formula for the Seiberg-Witten invariant of a non-Kähler complex surface, which was originally due to O. Biquard \cite{Biq} and S.R. Williams \cite{W} independently.
description: 27 pages, no figures, published
HBT technology and applications, today and tomorrow
Creators: name: Lee, F.
name: Kinoshita, G.
name: Chang, M.F.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1994
Subjects: ING-INF/01 Elettronica

description: This paper briefly reviews the status of GaAs Heterostructure Bipolar Technology (HBT) material, process and device developments. Representative device performance being achieved today is reported. System applications of digital and mixed signal circuits are described. Finally, further development of the HBT technology necessary for commercial applications is discussed.
Electroweak Supersymmetry around the Electroweak Scale
Creators: name: Cheng, Taoli
name: Li, Jinmian
name: Li, Tianjun
name: Nanopoulos, Dimitri V.
name: Tong, Chunli
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Inspired by the phenomenological constraints, LHC supersymmetry and Higgs searches, dark matter search as well as string model building, we propose the electroweak supersymmetry around the electroweak scale: the squarks and/or gluinos are around a few TeV while the sleptons, sneutrinos, bino and winos are within one TeV. The Higgsinos can be either heavy or light. We consider bino as the dominant component of dark matter candidate, and the observed dark matter relic density is achieved via the neutralino-stau coannihilations. Considering the Generalized Minimal Supergravity (GmSUGRA), we show explicitly that the electroweak supersymmetry can be realized, and the gauge coupling unification can be preserved. With two Scenarios, we study the viable parameter spaces that satisfy all the current phenomenological constraints, and we present the concrete benchmark points. Furthermore, we comment on the fine-tuning problem and LHC searches.
description: RevTex4, 28 pages, 8 figures, 8 tables, version to appear in EPJC
1.5 Gb/s, 6.6 mW 8-bit multiplexer using two-phase dynamic FET logic
Creators: name: Lassen, Peter S.
name: Long, Stephen I.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1994
Subjects: ING-INF/01 Elettronica

description: GaAs Two-Phase Dynamic FET Logic (TDFL) gates are used in the design of a high-speed, low-power 8-bit multiplexer. Operation of the multiplexer is demonstrated at 1.5 Gb/s with an associated power dissipation of 6.6 mW. The operation of the multiplexer demonstrates the high equivalent gate count of TDFL gates, direct compatibility between TDFL and Direct-Coupled FET Logic (DCFL), and the advantages of shift register architectures when simple, low-power dynamic latches are available in GaAs circuits.