3,060 research outputs found
S.P. Harrison (2013) – Plant and Animal Endemism in California
No full textS.P. Harrison (2013) – Plant and Animal Endemism in Californi
Code to compare model outputs and pollen-based reconstructions
No full textProvides code used to generate Figure 8 in Harrison, S.P., Gaillard, M-J., Stocker, B., Vander Linden, M., Klein Goldewijk, K., Boles, O., Braconnot, P., Dawson, A., Fluet-Chouinard, E., Kaplan, J.O., Kastner, T., Pausata, F.S.R., Robinson, E., Whitehouse, N., Madella, M., Morrison, K.D., 2019. Development and testing of scenarios for implementing Holocene LULC in Earth System Model Experiments. Geoscientific Model Development Discussions, https://doi.org/10.5194/gmd-2019-125 7</p
An electrochemical impedance study of bare and anodized AZ31 Mg alloy in dilute Harrison solution
No full textAnodic oxides were grown on AZ31 Mg alloy by micro-arc anodic oxidation in phosphate-based alkaline solutions with and without silicate and aluminate ions. The anodic oxides were characterized by SEM and XRD. Impedance spectra were recorded before and after single cycle anodic polarization in dilute Harrison solution (DHS), which is constituted by amixture of ammonium sulfate and sodiumchloride. Addition of silicate and aluminate oxyanions to the phosphate-based anodizing solution provided anodic oxides with improved morphology and thickness. Nevertheless, the protection performance in DHS is relatively poor due to the high reactivity of Mg in the presence of NH4+. The dissociation of this species into NH3 and H+ as local pH increases promotes further metal corrosion and hinders precipitation of Mg(OH)2. The likely better protection indicated
only silicate-rich oxide results from favored film compaction and blocking effect of Mg(OH)2 due to interactions between the oxide bulk phase and NH4+
Climate simulations of impact of LULC on mid-Holocene climate
No full textExtracted data from climate simulations by Smith et al., 2016 with and without landuse-landcover changes at 6000 yr BP., used to construct Figure 8 in Harrison, S.P., Gaillard, M-J., Stocker, B., Vander Linden, M., Klein Goldewijk, K., Boles, O., Braconnot, P., Dawson, A., Fluet-Chouinard, E., Kaplan, J.O., Kastner, T., Pausata, F.S.R., Robinson, E., Whitehouse, N., Madella, M., Morrison, K.D., 2019. Development and testing of scenarios for implementing Holocene LULC in Earth System Model Experiments. Geoscientific Model Development Discussions, https://doi.org/10.5194/gmd-2019-125 7</p
Pollen-based reconstructions of bioclimatic variables at 6000 yr BP
No full textGridded reconstructions of mean annual precipitation, mean annual temperature, temperature of the coldest month, growing degree days and plant available moisture (alpha) derived from the Bartlein et al. (2011) data set. These data are used to generate Figure 8 in Harrison, S.P., Gaillard, M-J., Stocker, B., Vander Linden, M., Klein Goldewijk, K., Boles, O., Braconnot, P., Dawson, A., Fluet-Chouinard, E., Kaplan, J.O., Kastner, T., Pausata, F.S.R., Robinson, E., Whitehouse, N., Madella, M., Morrison, K.D., 2019. Development and testing of scenarios for implementing Holocene LULC in Earth System Model Experiments. Geoscientific Model Development Discussions, https://doi.org/10.5194/gmd-2019-125 7</p
Implicit large-eddy simulation of the stratocumulus-topped boundary layer: A grid sensitivity study
No full textA range of implicit large-eddy simulations of the stratocumulus-topped boundary layer is performed to study the influence of grid resolution on selected parameters including liquid water path and second and third moments of vertical velocity fluctuations. The simulations are based on two sets of aircraft measurements, which are also used to evaluate the results of the simulations. The specific case presented here indicates that simulations with a grid aspect ratio accounting for the anisotropic nature of the turbulence near the surface and at the top of the boundary layer lead to better agreement with measurements than simulations with an isotropic grid
Entrainment and detrainment rates from the piv measurements at the top of laboratory analogs of stratocumulus and cumulus clouds
No full textWe analyze mixing at the top of laboratory analogs of convective clouds: stratocumulus and cumulus to investigate entrainment of environmental air into the cloud. We retrieve two components of air velocity using Particle Image Velocimetry technique. Suitable image processing allows to determine cloud–clear air interface. Using velocity differences between cloudy and clear sides of the interface we calculate entrainment / detrainment rates
Prof. S.P. Fedorov — founder of urology in Russia (150th anniversary of the birthday)
No full textThis article presents the important scientific achievements of S.P. Fedorov as a urologist. S.P. Fedorov is the author of over 120 scientific papers. It was noted that in 1892 he was the first in Russia to prepare and use cholera antitoxin for the treatment of patients, then tetanus toxin and antitoxin, found that antitoxin protects against tetanus if it is administered simultaneously with the toxin. Abroad S.P. Fedorov studied the system of aseptic mode of operation from K. Schimmelbush, and L. Casper studied the method of cystoscopy and catheterization of the ureters and other endoscopic methods that appeared at that time. It was shown that S.P. Fedorov developed new surgeries — in situ pyelotomy, subcapsular nephrectomy, and new surgical instruments were proposed. He is rightly called the father of Russian urology. The circumstance is analyzed that the main direction of S.P. Fedorov's scientific activity was the problems of surgery of the urinary and biliary tracts. He summarized the extensive experience of the surgeon in the Atlas of Cystoscopy and Rectoscopy (1911), the Surgery of the Kidneys and Ureters (1923-1925), and others. Galpernom edition of the surgical journal «New Surgical Archive», essentially the first Soviet surgical journal, created in the difficult years of the Civil War and post-war devastation. He was the editor of the 1st edition of the BME, together with S.S. Girgolavom and A.V. Martynov was the editor of the multivolume Guide to Practical Surgery. S.P. Fedorov created a major domestic surgical school, from which dozens of specialists, heads of surgical departments of medical universities in various cities of the USSR graduated. The name of S.P. Fedorov was given to the department of hospital surgery of the Military Medical Academy. S.M. Kirov. It is noted that he was the first of the Soviet surgeons to be awarded the Order of Lenin (1933)
Measurements of turbulence at stratocumulus top
No full textUsing 1m resolution airborne data from research flights we divide stratocumulus top region into sublayers and characterize properties of turbulence in each sublayer. Results indicate, that there are no clear differences of turbulence properties between thermodynamically different "calassical" and "non-classical" stratocumulus regimes, but there are clear signs of turbulence ainsotropy in stably stratified sublayers in the cloud top region
sweeney-l/European_Holocene_tree_cover: 02/05/24
No full textCode and data for paper - Sweeney, L.F., Harrison, S.P. and Vander Linden, M. (2024) "European forest cover during the Holocene reconstructed from pollen records
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