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1,029 results for “Absorption”
Assessment of the Human Systemic Absorption of Sunscreen Ingredients
ClinicalTrials.gov study NCT03582215. IPD Sharing: YES. Countries: 1. Publications: 3.
High absorptivity nanotextured powders for additive manufacturing
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Decoupling of uptake and transport-related traits in absorptive roots across coexisting herbaceous species in alpine meadows
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Contrasting effects of indigenous arbuscular mycorrhizal fungi on nitrogen absorption of C3 and C4 grasses: Evidence from microcosm and 15N labeling experiments
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Positioning absorptive root respiration in the root economics space across woody and herbaceous species
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T cell cholesterol transport links intestinal immune responses to dietary lipid absorption
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Data from: C,N-codoped MoSi2 ceramic with excellent heat resistance for microwaves absorption application
Microwaves absorption (MA) materials with high heat resistance have a wide range of applications in many fields. In this work, a C,N-codoped-MoSi2 ceramic was prepared via a facile solid phase reaction method and its MA properties was investigated. On the one hand, the results indicate that this ceramic possesses excellent heat resistance and the weight of the MoSi2 is almost constant when the temperature is lower than 800 ℃. On the other hand, this ceramic shows good MA performance when the filler loading ratio increases to 30 vol%, the value of reflection loss(RL) could reach to -17.70 dB at 7.44 GHz with the thickness of 2.0 mm and the effective EM absorption bandwidth (RL below -10 dB) could reach to 1.88 GHz (9.28 GHz–11.16 GHz) with the thickness of 1.5 mm. Multi-polarization resonance loss is considered as the predominant attention mechanism on the MA performance of this MoSi2 ceramic. This research provides a new idea for understanding resonance mechanism and greatly expands the application scope of MoSi2 ceramic in MA area.
Aerosol light absorption in Nanjing, China during the 2020 COVID-19 lockdown period
<p>This file contains the data in aerosol light absorption measured by Aethalometer AE33 in Nanjing, China from January 3 to March 31, 2020.</p>
Enhancement of microwave absorption bandwidth of MXene nanocomposites through macroscopic design
<p><span>MXene, the new family of 2D materials having numerous nanoscale layers, is being considered as a novel microwave absorption material. However, MXene/functionalized MXene loaded polymer nanocomposites exhibit narrow reflection loss (RL) bandwidth (RL ≤ -10 dB). In order to enhance the microwave absorption bandwidth of <span>MXene hybrid-matrix materials</span>, for the first time, macroscopic design approach is carried out for TiO<sub>2</sub>-Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene and Fe<sub>3</sub>O<sub>4</sub>@TiO<sub>2</sub>-Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene hybrids through simulation. The simulated results indicate that use of pyramidal meta structure of MXene can significantly tune the RL bandwidth. For optimized <span>MXene hybrid-matrix materials</span> pyramid pattern, the bandwidth enhances to 3-18 GHz. Experimental RL value well matched with the simulated RL. On the other hand, for optimized Fe<sub>3</sub>O<sub>4</sub>@TiO<sub>2</sub>-Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> hybrid exhibits two specific absorption bandwidths viz. 3-18 GHz (minimum RL value - 47 dB). Compared to other 2D nanocomposites such as graphene or Fe<sub>3</sub>O<sub>4</sub>-graphene, <span>MXene hybrid-matrix materials</span> shows better microwave absorption bandwidth in macroscopic pattern. </span></p>
VOLUMETRIC ABSORPTIVE MICROSAMPLING OF BLOOD (VAMS) FOR UNTARGETED LIPIDOMICS
<p>In the present, proof-of-concept paper, we explore the potential of one common solid support for blood microsampling (dried blood spot, DBS) and a recently developed device (volumetric absorptive microsampling, VAMS) for the untargeted lipidomic profiling of human whole blood, performed by high-resolution LC-MS/MS. Dried blood microsamples obtained by means of DBS and VAMS were extracted with different solvent compositions and compared with fluid blood to evaluate their efficiency in profiling the lipid chemical space in the most wide way. Although more effort is needed to better characterize this approach, our results indicate that VAMS is a viable option for untargeted studies and its use will bring all the corresponding known advantages, like, for example, haematocrit independence, in the field of lipidomics. </p>
Two- and one-photon absorption spectra of aqueous thiocyanate anion highlight the role of symmetry in the condensed phase
<p>The snapshots.zip contains the snapshots extracted from QM/MM AIMD simulations used in 2PA calculations</p><p>The 2pa_inp_out.zip contains the 2PA calculation input and output files for each of the snapshots. </p>
Atmospheric Absorption Tables for AMSU-A Channels 4 through 9, RSS oxygen model
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Geometries for "X-ray Absorption Spectra for Aqueous Ammonia and Ammonium: Quantum Mechanical versus Molecular Mechanical Embedding Schemes"
<p>195 clusters of ammonia and ammonium in water, used in <em>"X-ray Absorption Spectra for Aqueous Ammonia and Ammonium: Quantum Mechanical versus Molecular Mechanical Embedding Schemes"</em></p> <p>The geometries were first used in <em>J. Am. Chem. Soc.</em> 2017, 139, 36, 12773–12783, and later in <em>J. Phys. Chem. Lett.</em> 2021, 12, 36, 8865–8871</p> <p> </p> <p> </p>
A new method for eliminating dust effects when quantifying the light absorption properties of brown carbon
<p>Accurate quantification of the absorption properties of brown carbon (BrC) aerosols is crucial to assess the Earth-atmosphere radiative impacts of BrC. However, the BrC absorption properties were often misestimated in field observations, due to neglecting the contribution of dust absorption. This study solved this problem by coupling a method for calculating the dust concentration into the traditional model for quantifying BrC absorption. The results show that dust absorption was up to 16.8% of the sum of BrC and dust absorption in northwestern China. The potential contribution of dust to the sum of BrC and dust absorption was significantly higher in the Asia-located studies (0.4−16.8%) than in the Americas-located (<1.2%) and Europe-located (<2.3%) studies. This work underscores the necessity of eliminating the negative effect of dust in BrC quantitative model. It prompts us to revisit the BrC absorption properties resolved by previous studies, especially in dust-influenced areas such as Asia.</p> <p>The data file contains data from the AE31 aethalometer, aerodynamic particle sizer spectrometer (APS), tapered element oscillating microbalance machine (TEOM), and high-resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS) used in this study, as well as data from each figure in this study.</p>
Studying energy materials under operating conditions by X-ray absorption spectroscopy using the new OÆSE endstation at BESSY II
<div>For the "Predicted undulator gap offset", ID of binary files in "undulator gap detuning" folder are:</div> <div>[474,475,476,477,478] for oxygen K-edge measurements with corresponding offset gap values of [20,15,10,5,-1.672]</div> <div>[466,468,469,470,472,473] for nickel L23-edge measurements with corresponding offset gap values of [30,43,35,10,20,-1.672]</div> <div> <div> </div> <div>For the "Beam blocking between data acquisition" data, files uploaded for "maximum flux" ("high_dose_5MH3PO3.txt") and "beam blocker" ("low_dose_5MH3PO3.txt")</div> <div> </div> <div>For the "Operation of the cell at different temperatures" data, files uploaded for 25°C ("CV_planarPt_5MH3PO3_25C.txt") and for 72°C ("CV_planarPt_5MH3PO3_72C.txt")</div> <div> <div> </div> <div> <div>For the "Detuning the undulator gap minimizes the radiation-induced oxidation" plot, in the "Undulator detuning P K-edge" folder the files are:</div> </div> </div> <div> <div>["w_AuMesh,Ugap=6p0_I0=58nA_t=10min.txt",</div> <div>"w_Aumesh_Ugap=6p15_I0=9nA_t=20min.txt",</div> <div>"w_AuMesh_Ugap=6p11_I0=18nA_t=30min.txt",</div> <div>"w_AuMesh_Ugap=6p05_I0=40nA_t=40min.txt"] with [100,69,31,16]% of maximum flux respectively</div> <div>"aqueous_1M_H3PO3_exp_PK_XAS.txt" and "aqueous_1M_H3PO4_exp_PK_XAS.txt" are the reference spectra of aqueous 1M H3PO3 and 1M H3PO4 respectively</div> <div> </div> <div> <div>For the "Variation of the position of the irradiated sample", in the "NCA degradation damage" folder the files are:</div> <div> <div>[1271,1272,1273] for oxygen K-edge measurement for 1st, 2nd and 3rd scan in the same position</div> <div>[1297,1298,1299] for nickel L3-edge measurement for 1st, 2nd and 3rd scan in the same position</div> <div>[1304] for nickel L3-edge spectra for measurement in a new position</div> </div> </div> <div> </div> <div>For the "Cu samples electrodeposited under different conditions " in the "Different Cu electrodeposition protocols" folder, the files are:</div> <div>at the Cu L3-edge:</div> <div> <div>electrolyte = "Scan_1107_2022_10_08_aq_CuSO4.sdat"</div> <div>Cu2O = "Scan_2020_2022_11_02_Cu2O_in_CuSO4.sdat"</div> <div>Cu = "Scan_2028_2022_11_02_Cu_in_CuSO4.sdat"</div> <div>at the Cu K-edge:</div> <div> <div>electrolyte = "Scan_2007_2022_11_02_aq_CuSO4.dat"</div> <div>Cu2O = "Scan_2021_2022_11_02_Cu2O_in_CuSO4.dat"</div> <div>Cu = "Scan_2033_2022_11_02_Cu_in_water.dat"</div> <div>and the electrochemistry:</div> <div>"scan_2027" for the Cu electrodeposition</div> <div>"3_ED_CA_XXX_CuSO4_RHE_YYY.mpr" for the 5 files related to the Cu2O electrodeposition</div> </div> </div> </div> <div> </div> <div>The spectromicrographs are the files:</div> <div>1247 for the TFY mode</div> <div>1248 for the PFY mode</div> <div> </div> <div>The FEXRAV signals are given by the following IDs:</div> <div> <div> <div>[1998,2002,2009] for the chemical species ["sXAS-Main peak (Cu2O)","sXAS-Secondary peak (Cu(0))","hXAS-Main peak"]</div> </div> </div> <div> </div> </div>
Aerosol light absorption alleviates particulate pollution during wintertime haze events
<p>Observed and simulated data presented in Figs. 1-4.</p>
Absorptive roots drive a larger microbial carbon pump efficacy than transport roots in alpine coniferous forests
<p>Root activity creates a unique microbial hotspot in the rhizosphere and profoundly regulates soil carbon (C) dynamics, but empirical assessments of the soil microbial carbon pump (MCP, the iterative accumulation of necromass after microbial anabolism) and associated ecological consequences on soil C storage based on insight of the rhizosphere are still neglected, especially for different root functional modules.</p> <p>We assessed the soil MCP efficacy (i.e., the contribution of microbial necromass to SOC) by investigating the divergent contribution of microbial necromass based on amino sugar extrapolations to soil organic C (SOC) in the rhizosphere of two root functional modules (i.e., absorptive roots and transport roots) and the bulk soil in an alpine coniferous forest.</p> <p>The results showed that the MCP efficacy in both rhizosphere and bulk soil was more than 50%, suggesting that microbial necromass plays a key role in SOC formation. More importantly, absorptive roots drove a greater MCP efficacy (56%) in the rhizosphere than transport roots (51%).</p> <p><em>Synthesis</em>. These observations suggest that the microbial necromass is a major contributor to SOC storage in both rhizosphere and bulk soil in alpine coniferous forests. The magnitude of the contribution of microbial necromass to rhizosphere SOC depends on root functional differentiation. Our study provides novel and direct empirical evidence for the active soil MCP functions in SOC sequestration from the perspective of the rhizosphere.</p>
Spectral dependence of light absorption and direct radiative forcing of rural carbonaceous aerosol in TSP, PM10, PM2.5, and PM0.1 in northwestern China
<p>Black carbon (BC) and brown carbon (BrC) are major light absorbing components of aerosol, affecting visibility, radiative forcing balance and human health. In this study, we investigated the light absorption and radiative forcing of carbonaceous aerosol in the total suspended particle (TSP), coarse particle (PM<sub>10</sub>: particulate matter with an aerodynamic diameter less than 10 μm, Dp≤10 μm), fine particle (PM<sub>2.5</sub>: Dp≤2.5 μm), and nanoparticle (PM<sub>0.1</sub>: Dp≤0.1 μm) in a rural area of Guanzhong Plain, China. Similar variations of light absorption coefficients and the absorption Ångstrom exponent (AAE) of TSP, PM<sub>10</sub>, and PM<sub>2.5</sub> were observed. Lower light absorption coefficients and higher AAEs were obtained for PM<sub>0.1 </sub>compared with other particle sizes. The direct radiative forcing (DRE) efficiency of BC decreased with size bins of TSP, PM<sub>10</sub>, PM<sub>2.5</sub>, and PM<sub>0.1</sub>, respectively. The DRE of BCs for all particle sizes at top atmosphere (TOA), surface atmosphere (SUF) and the whole atmosphere (ATM) were estimated, and the levels in TSP were ~3.7 times higher than those in PM<sub>0.1</sub>. The optical properties of primary and secondary BrC (PBrC and SBrC) in PM<sub>0.1</sub> were further analyzed. The levels of AAEs indicated that the light absorbing of SBrC was more wavelength dependent than PBrC in PM<sub>0.1</sub>. The DRE of BC, PBrC, and SBrC in PM<sub>0.1</sub> were estimated firstly with the values of 19.9, 2.1, and 1.1 Wm<sup>-2</sup> in the ATM, respectively.</p>
Impact of Cloud Process in the Mixing State and Microphysical Properties of Soot Particles: Implications in Light Absorption Enhancement
<p>The data of paper of "Impact of Cloud Process in the Mixing State and Microphysical Properties of Soot Particles: Implications in Light Absorption Enhancement".</p>
Ammonia recovery from food waste digestate using solar heat-assisted stripping-absorption
<p>The highest costs of stripping-absorption processes for ammonia recovery are related to energy (for heating and air supply) and chemical addition (for pH adjustment). In this paper, a simplified system that used no chemicals, and a renewable source of energy for heating, was tested to recover nitrogen as ammonium sulfate from food waste digestate. pH adjustment was achieved by CO<sub>2</sub> stripping, and vacuum tube solar collectors were used to provide heating. The effect of different temperatures (25 °C and 45 °C) and gas to liquid ratios (1700 and 2600) on ammonia removal and recovery were assessed. Ammonia removal efficiencies higher than 91% were achieved for all evaluated experimental conditions. The solar heater showed adequate capacity to increase the temperature of the liquid digestate by 21 °C and maintain the temperature at 45 °C throughout the experiment. Tests carried out at 45 °C achieved the highest ammonia removal efficiency (98%) at the lowest evaluated G/L ratio (1700). Better absorption efficiencies could potentially have been achieved if lower inlet airflow rates and packing material had been used in the absorption column.</p>
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