Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
33,754
datasets available to search
ShareScore release 0.9.0
Dataset results
33,754 results for “Enhancers”
Video from: Two-dimensional hybrid model of gradient drift instability and enhanced electron transport in a Hall thruster
<p>The video data for Fig. 3 in "Two-dimensional hybrid model of gradient drift instability and enhanced electron transport in a Hall thruster."</p>
Clustering of Catalytic Nanocompartments for Enhancing an Extracellular Non-Native Cascade Reaction
<p>Data underlying the figures in the publication “Clustering of Catalytic Nanocompartments for Enhancing an Extracellular Non-Native Cascade Reaction”, published in <em>Chemical Science</em> <strong>2021</strong>.</p> <p>Table of contents:</p> <p><strong>1. Figure 2</strong>; Zip. archive containing the experimental data of the graphs in <em>Figure 2</em>.</p> <p><strong>2. Figure 3</strong>; Zip. archive containing the experimental data of the graphs in <em>Figure 3</em>.</p> <p><strong>3. Figure 4</strong>; Zip. archive containing the experimental data of the graphs in <em>Figure 4</em>.</p> <p><strong>4. Figure 5</strong>; Zip. archive containing the experimental data of the graphs in <em>Figure 5</em>.</p> <p><strong>5. Figure 7</strong>; Zip. archive containing the experimental data of the graphs in <em>Figure 7</em>.</p>
Raw data for the article: Mind the stimulation site: Enhancing and diminishing sentence comprehension with anodal tDCS
<p>In a previous sham-controlled study, we showed the feasibility of increasing language comprehension in healthy participants by applying anodal transcranial direct current stimulation (atDCS) over the left inferior frontal gyrus (LIFG). In the present work, we present a follow-up experiment targeting with atDCS the left inferior parietal cortex (LIPC) while participants performed the same auditory comprehension task used in our previous experiment. Both neural sites (LIFG and LIPC) are crucial hubs of Baddeley’s model of verbal short-term memory (vSTM).</p> <p>AtDCS over LIPC decreased accuracy as compared to sham and LIFG stimulation, suggesting the involvement of this area in sentence comprehension. Crucially, our results highlighted that applying tDCS over different hubs of the same neural network can lead to opposite behavioural results, with relevant implications from a clinical perspective.</p>
FIGURE 3 in Typhlodromalus Aripo De Leon (Acari: Phytoseiidae) Development And Reproduction On Major Cassava Pests At Different Temperatures And Humidities: An Indication Of Enhanced Mite Resilience
FIGURE 3: Mean daily fecundity of Typhlodromalu aripo female on cassava green mite Mononychellus progresivus in absence and presence of B. tabaci crawlers.
FIGURE 2 in Typhlodromalus Aripo De Leon (Acari: Phytoseiidae) Development And Reproduction On Major Cassava Pests At Different Temperatures And Humidities: An Indication Of Enhanced Mite Resilience
FIGURE 2: Mean daily consumption rate by Typhlodromalus aripo female of cassava green mite in absence and presence of Bemisia tabaci crawlers.
FIGURE 1 in Typhlodromalus Aripo De Leon (Acari: Phytoseiidae) Development And Reproduction On Major Cassava Pests At Different Temperatures And Humidities: An Indication Of Enhanced Mite Resilience
FIGURE 1: Leaf disk unit showing dimensions (0.4 cm-depth × 1.5 cm-diameter) of feed area of Typhlodromalus aripo life stage cohorts on cassava green mite (eggs and active), Bemisia tabaci and Phenacoccus manihoti.
Plasmonic Metasurface Resonators to Enhance Terahertz Magnetic Fields for High-Frequency Electron Paramagnetic Resonance _experimental dataset
<p>This dataset contains the raw experimental data for Tesi et al., Plasmonic Metasurface Resonators to Enhance Terahertz Magnetic Fields for High-Frequency Electron Paramagnetic Resonance, Small Methods 2021, 2100376, DOI <a href="https://doi.org/10.1002/smtd.202100376">10.1002/smtd.202100376</a>. </p>
Enhanced RAVDESS Speech Dataset
<p>This is a modified version of the speech audio contained within the Ryerson Audio-Visual Database of Emotional Speech and Song (RAVDESS) dataset. The original dataset can be found <a href="https://zenodo.org/record/1188976#.YKvCMKhKhPY">here</a>. The unmodified version of just the speech audio used as source material for this dataset can be found <a href="https://www.kaggle.com/uwrfkaggler/ravdess-emotional-speech-audio">here</a>. This dataset performs speech enhancement and bandwidth extension on the original speech using HiFi-GAN. HiFi-GAN produces high-quality speech at 48 kHz that contains significantly less noise and reverb relative to the original recordings.</p> <p>If you use this work as part of an academic publication, please cite the papers corresponding to both the original dataset as well as HiFi-GAN:</p> <blockquote> <p>Livingstone SR, Russo FA (2018) The Ryerson Audio-Visual Database of Emotional Speech and Song (RAVDESS): A dynamic, multimodal set of facial and vocal expressions in North American English. PLoS ONE 13(5): e0196391. <a href="https://doi.org/10.1371/journal.pone.0196391">https://doi.org/10.1371/journal.pone.0196391</a>.</p> <p>Su, Jiaqi, Zeyu Jin, and Adam Finkelstein. "HiFi-GAN: High-fidelity denoising and dereverberation based on speech deep features in adversarial networks." <em>Proc. Interspeech</em>. October 2020.</p> </blockquote> <p>Note that there are two recent papers with the name "HiFi-GAN". Please be sure to cite the correct paper as listed here.</p>
Supplementary Dataset for: Enhancement of superexchange due to synergetic breathing and hopping in corner-sharing cuprates
<p>The following data are included in the dataset:</p> <ul> <li>Cluster geometries</li> <li>Point charge embedding files</li> <li>Inputs and output files</li> <li>Orbital files for calculations with large active spaces</li> <li>Data for density difference plots</li> </ul> <p>It is fast to see the contents of the archive with help of <a href="https://github.com/vasi/pixz">pixz</a>:</p> <pre><code class="language-bash">pixz -l data.tar.xz</code></pre> <p>Then the files of interest can be easiliy extracted:</p> <pre><code class="language-bash">pixz -x dir/file < data.tar.xz | tar x </code></pre>
Global warming enhances nitrogen-limitation in a temperate reservoir system under consistent external load.
<p>Data belonging to AGU<em>:Water Resources Research</em> submission:</p> <p>Global warming and continued external loading increase nitrogen limitation in a temperate reservoir system.</p> <p>Climate change impacts hydrology, geochemistry, and biology of lakes and reservoirs worldwide, also affecting surface water concentrations of the essential nutrients nitrogen (N) and phosphorus (P). Few studies have illustrated climate change’s impact on nutrient processing due to compounded effects of both climate change and catchment inputs. In this study, we have evaluated monitoring data from the years 2000 to 2019 in the Franconian Lake District (FLD), which consists of one shallow (hypertrophic) and three deep reservoirs (meso- to eutrophic), interconnected by a transfer canal. The cascade configuration and consistent external load buffer catchment variations, making nutrient trends attributable to internal processing. Mass balances were set up and statistical analyses were conducted for trends in stratification, hypolimnetic anoxia and nutrient concentrations. Warming significantly increased water temperature (+0.35-1.0°C decade<sup>−1</sup> ), stratification (+7-18 days decade<sup>−1</sup>), and hypolimnetic anoxia (+15-35 days decade<sup>−1</sup>). TP increased in deep reservoirs (+0.006-0.01 mg-P L<sup>−1</sup> decade<sup>−1</sup> ) and TN decreased in all reservoirs (−0.2-0.4 mg-N L<sup>−1</sup> decade<sup>−1</sup> ). The increased rates of NO<sub>3</sub>-loss could be related to enhanced denitrification rates and earlier algal uptake. Increased TP-concentrations were attributable to increased sediment P-release, induced by prolonged stratification and hypolimnetic anoxia. Primarily, the decrease in TN drove a strong decrease in TN:TP-ratio (-4 to -15 mol:mol decade<sup>−1</sup>), triggering a biogeochemical regime shift towards N-limitation, associated with proliferation of harmful algae blooms. The identified impacts emphasizes the need to consider the potential disruptive effects of intensifying climate change on the health and restoration efforts for temperate, eutrophic lakes worldwide.</p>
Data of publication Cavity-enhanced spectroscopy of a few-ion ensemble in Eu3+:Y2O3
<p>Data corresponding to the figures of the publication "Cavity-enhanced spectroscopy of a few-ion ensemble in Eu3+:Y2O3" by B. Casabone et al. (New J. Phys. 20(2018) 095006 https://doi.org/10.1088/1367-2630/aadf68). A text file describes data in each compressed folder, please refer to the caption in the publication for more details. </p> <p>These data can be also found together with the article manuscript at https://zenodo.org/record/1546139</p>
Thermally coupled monolith reactors with enhanced heat transfer for conducting simultaneous endothermic and exothermic reactions
<p><strong>Thermally coupled monolith reactors with enhanced heat transfer for conducting simultaneous endothermic and exothermic reactions</strong></p> <p>Junjie Chen</p> <p>Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China</p> <p>Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com</p> <p> </p> <p>A reactor must be of sufficient length to allow a reaction to proceed to the required conversion. Utilizing high gas velocities typically results in reactors with large length to width ratios which again results in systems with high pressure drops. The smaller the characteristic dimension of the catalyst particle the higher is the utilization of the catalyst. This is sometimes expressed as a higher effectiveness factor. However, beds formed from small particles exhibit higher pressure drops than similar beds formed from larger particle. So, an engineer designs a system with expectable compromises between heat transfer, catalyst utilization, system conversion, and pressure drop. Therefore, a reactor for conducting catalytic processes which can promote overall heat transfer and levels of conversion whilst minimizing pressure drop is desired. Another deficiency of traditional heat transfer equipment is start-up time and thermal response to transients. As reactors are traditionally large and heavy, they have significant thermal inertia. Therefore, the system takes significant time to re-equilibrate from any change in load or process operating conditions. Therefore, a reactor with enhanced response characteristics particularly for rapid start up is desired. A number of methods have been directed to methods of increased heat transfer within reactors and towards low pressure drop catalytic reactors and processes.</p> <p>Streamwise distance (meters), Heat flux (watts per square meter)</p> <p>0 24445.8</p> <p>0.00025 134016</p> <p>0.0005 131072</p> <p>0.00075 151168</p> <p>0.001 85641.3</p> <p>0.00125 -1444</p> <p>0.0015 -1860.19</p> <p>0.00175 -1518.44</p> <p>0.002 54696.4</p> <p>0.00225 97408</p> <p>0.0025 82176</p> <p>0.00275 94848</p> <p>0.003 54951.4</p> <p>0.00325 272.062</p> <p>0.0035 190.062</p> <p>0.00375 172.75</p> <p>0.004 30551.3</p> <p>0.00425 55808</p> <p>0.0045 50432</p> <p>0.00475 60160</p> <p>0.005 35216.3</p> <p>0.00525 267.563</p> <p>0.0055 230.062</p> <p>0.00575 199.562</p> <p>0.006 21724.7</p> <p>0.00625 39680</p> <p>0.0065 35840</p> <p>0.00675 42112</p> <p>0.007 24419.8</p> <p>0.00725 184.875</p> <p>0.0075 157.375</p> <p>0.00775 138</p> <p>0.008 18497.7</p> <p>0.00825 33024</p> <p>0.0085 28672</p> <p>0.00875 32384</p> <p>0.009 18375</p> <p>0.00925 128.25</p> <p>0.0095 103.25</p> <p>0.00975 90.5625</p> <p>0.01 16940.7</p> <p>0.01025 29440</p> <p>0.0105 24448</p> <p>0.01075 26496</p> <p>0.011 14644.3</p> <p>0.01125 91.5</p> <p>0.0115 68.8125</p> <p>0.01175 61.3125</p> <p>0.012 16031.7</p> <p>0.01225 27392</p> <p>0.0125 22016</p> <p>0.01275 23040</p> <p>0.013 12456.8</p> <p>0.01325 69.125</p> <p>0.0135 47.6875</p> <p>0.01375 42.5</p> <p>0.014 15255.2</p> <p>0.01425 25856</p> <p>0.0145 20096</p> <p>0.01475 20224</p> <p>0.015 10784.7</p> <p>0.01525 53.8125</p> <p>0.0155 33.375</p> <p>0.01575 30.25</p> <p>0.016 14481.9</p> <p>0.01625 24192</p> <p>0.0165 18304</p> <p>0.01675 17792</p> <p>0.017 9241.95</p> <p>0.01725 40.7501</p> <p>0.0175 21.3125</p> <p>0.01775 19.5625</p> <p>0.018 13581</p> <p>0.01825 22528</p> <p>0.0185 16768</p> <p>0.01875 15872</p> <p>0.019 8084.96</p> <p>0.01925 31.375</p> <p>0.0195 12.5</p> <p>0.01975 11.3125</p> <p>0.02 12809.2</p> <p>0.02025 20992</p> <p>0.0205 15104</p> <p>0.02075 13824</p> <p>0.021 6927.91</p> <p>0.02125 21.8125</p> <p>0.0215 4.18748</p> <p>0.02175 3.87499</p> <p>0.022 11653.6</p> <p>0.02225 18816</p> <p>0.0225 13312</p> <p>0.02275 12032</p> <p>0.023 5900.31</p> <p>0.02325 15.5625</p> <p>0.0235 -0.375003</p> <p>0.02375 -0.250023</p> <p>0.024 10115.4</p> <p>0.02425 16384</p> <p>0.0245 11520</p> <p>0.02475 10496</p> <p>0.025 5258.69</p> <p>0.02525 13.5625</p> <p>0.0255 0.125008</p> <p>0.02575 -2.83833E-05</p> <p>0.026 8578.74</p> <p>0.02625 13824</p> <p>0.0265 9856</p> <p>0.02675 9216</p> <p>0.027 4618.92</p> <p>0.02725 15.75</p> <p>0.0275 5.68751</p> <p>0.02775 5.625</p> <p>0.028 6404.77</p> <p>0.02825 10624</p> <p>0.0285 8320</p> <p>0.02875 8832</p> <p>0.029 4751.49</p> <p>0.02925 26.8125</p> <p>0.0295 20.3125</p> <p>0.02975 16.3125</p> <p>0.03 2.63005</p> <p>Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com, Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China</p>
Thermally conductive honeycombs for chemical reactors with enhanced chemical conversion behavior
<p><strong>Thermally conductive honeycombs for chemical reactors with enhanced chemical conversion behavior</strong></p> <p>Junjie Chen</p> <p>Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China</p> <p>Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com</p> <p> </p> <p>It has been taught a method to produce a thermally conductive honeycombs for chemical reactors. It has been taught a technique to produce an extruded metal monolith and highlights how copper or copper alloys are particularly suitable for this application. It has been taught how catalysts may be attached to walls to produce an active catalyst matrix. It is claimed that thermally conductive monoliths reduce the likelihood of hot spot formation, as any hotter area conducts the energy via conduction through the monolith body to an area which is less hot. However, the method does not teach of the possibility of having different chemical reactions simultaneously occurring on opposing sides of the monolith substrate. Therefore, it is necessary to provide an improved chemical processor which is suitable for efficiently carrying out chemical reactions. Therefore, it is also necessary to provide a reactor which can be ready produced by suitable modification of a regular monolithic structure such that two reactions of different energetic nature can be catalytically performed on opposing sides of walls which divide the two sets of discrete flow channels.</p> <p>Streamwise distance (meter), Heterogeneous reaction rate along the length of the reactor (mole per square meter per second)</p> <p>0 13.075</p> <p>0.00025 13.1037</p> <p>0.0005 13.1253</p> <p>0.00075 13.0811</p> <p>0.001 12.9897</p> <p>0.00125 12.8713</p> <p>0.0015 12.7362</p> <p>0.00175 12.5895</p> <p>0.002 12.4345</p> <p>0.00225 12.2741</p> <p>0.0025 12.1101</p> <p>0.00275 11.9443</p> <p>0.003 11.7782</p> <p>0.00325 11.6128</p> <p>0.0035 11.4491</p> <p>0.00375 11.2879</p> <p>0.004 11.1299</p> <p>0.00425 10.9755</p> <p>0.0045 10.8253</p> <p>0.00475 10.6793</p> <p>0.005 10.5378</p> <p>0.00525 10.4009</p> <p>0.0055 10.2684</p> <p>0.00575 10.1406</p> <p>0.006 10.0173</p> <p>0.00625 9.89855</p> <p>0.0065 9.78406</p> <p>0.00675 9.6739</p> <p>0.007 9.56804</p> <p>0.00725 9.46615</p> <p>0.0075 9.36809</p> <p>0.00775 9.27394</p> <p>0.008 9.18373</p> <p>0.00825 9.09715</p> <p>0.0085 9.01421</p> <p>0.00875 8.9348</p> <p>0.009 8.85876</p> <p>0.00925 8.78593</p> <p>0.0095 8.71625</p> <p>0.00975 8.64929</p> <p>0.01 8.58508</p> <p>0.01025 8.52384</p> <p>0.0105 8.46504</p> <p>0.01075 8.4084</p> <p>0.011 8.35384</p> <p>0.01125 8.30147</p> <p>0.0115 8.25092</p> <p>0.01175 8.20203</p> <p>0.012 8.15488</p> <p>0.01225 8.10937</p> <p>0.0125 8.06514</p> <p>0.01275 8.02226</p> <p>0.013 7.98085</p> <p>0.01325 7.9406</p> <p>0.0135 7.90137</p> <p>0.01375 7.86316</p> <p>0.014 7.82602</p> <p>0.01425 7.78976</p> <p>0.0145 7.75459</p> <p>0.01475 7.72034</p> <p>0.015 7.68674</p> <p>0.01525 7.65366</p> <p>0.0155 7.6212</p> <p>0.01575 7.58953</p> <p>0.016 7.55833</p> <p>0.01625 7.52745</p> <p>0.0165 7.49677</p> <p>0.01675 7.46607</p> <p>0.017 7.43551</p> <p>0.01725 7.40508</p> <p>0.0175 7.37459</p> <p>0.01775 7.34397</p> <p>0.018 7.31357</p> <p>0.01825 7.28303</p> <p>0.0185 7.25215</p> <p>0.01875 7.22111</p> <p>0.019 7.19005</p> <p>0.01925 7.15883</p> <p>0.0195 7.12722</p> <p>0.01975 7.09539</p> <p>0.02 7.06334</p> <p>0.02025 7.03095</p> <p>0.0205 6.99814</p> <p>0.02075 6.96499</p> <p>0.021 6.93157</p> <p>0.02125 6.89773</p> <p>0.0215 6.86322</p> <p>0.02175 6.8282</p> <p>0.022 6.79267</p> <p>0.02225 6.7565</p> <p>0.0225 6.71985</p> <p>0.02275 6.6827</p> <p>0.023 6.64477</p> <p>0.02325 6.60607</p> <p>0.0235 6.56675</p> <p>0.02375 6.52675</p> <p>0.024 6.48581</p> <p>0.02425 6.4439</p> <p>0.0245 6.40125</p> <p>0.02475 6.35774</p> <p>0.025 6.31309</p> <p>0.02525 6.26742</p> <p>0.0255 6.22078</p> <p>0.02575 6.17321</p> <p>0.026 6.12453</p> <p>0.02625 6.07467</p> <p>0.0265 6.02388</p> <p>0.02675 5.97193</p> <p>0.027 5.91868</p> <p>0.02725 5.86423</p> <p>0.0275 5.80859</p> <p>0.02775 5.75169</p> <p>0.028 5.69341</p> <p>0.02825 5.63397</p> <p>0.0285 5.57294</p> <p>0.02875 5.51116</p> <p>0.029 5.45709</p> <p>0.02925 5.39358</p> <p>0.0295 5.3349</p> <p>0.02975 5.27843</p> <p>0.03 5.21054</p> <p>Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com, Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China</p>
Thermally coupled monolith reactors with enhanced heat and mass transfer for hydrogen production
<p><strong>Thermally coupled monolith reactors with enhanced heat and mass transfer for hydrogen production</strong></p> <p>Junjie Chen</p> <p>Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China</p> <p>Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com</p> <p> </p> <p>The thermally coupled monolith reactor design comprises, in one form thereof, a monolith to which, at each end, the uppermost section of the dividing walls of alternate rows of channels has been ground or cut away. The top section of each of the created voids has been sealed with a suitable material from the end to a depth as to leave an opening in the outer wall, such that a distinct inlet or outlet is formed. A catalyst coating has been applied to the inner wall of the two sets of channels using a suitable technique, one of which is the well-known washcoat technique. Two manifolds, with suitable gaskets, are attached to open ends of the monolith. Furthermore, two addition manifolds, with suitable gaskets, are affixed to the two newly formed openings. The gasket material is chosen to afford a reasonable gas tight seal to prevent cross flow between the two channels. The catalyst coatings may need to be calcined and reduced in order to produce an active catalyst. More particularly, the design comprises, in one form, a monolith to which alternate channels have been sealed at opposing ends. A catalyst coating has been applied to the inner wall. A thin capillary like tube is passed through the inlet of the void and arranged such that it falls short of the sealed end. The opposing end is prepared in a similar manner. Process gas is passed through this tube to the far end of the monolith. The fluid exits the tube is directed back towards to inlet. As the fluid traverses the channel reaction occurs in the catalytically coated walls. Any heat which is required or generated by the process is transferred through the wall. However, even with this highly efficient transfer mechanism the gas will still absorb some heat energy and become hot. This heat energy can be conducted through the capillary inlet tube to preheat the incoming reactants. This arrangement alleviates the need for an external heat exchanger (although one can be used to provide further heating) and improvers the overall efficiency of the reactor.</p> <p>Streamwise distance (meter), Heterogeneous reaction rate along the length of the reactor (mole per square meter per second)</p> <p>0 10.8203</p> <p>0.00025 10.9546</p> <p>0.0005 11.2153</p> <p>0.00075 11.4215</p> <p>0.001 11.5345</p> <p>0.00125 11.5606</p> <p>0.0015 11.5129</p> <p>0.00175 11.4049</p> <p>0.002 11.2484</p> <p>0.00225 11.0544</p> <p>0.0025 10.8331</p> <p>0.00275 10.5932</p> <p>0.003 10.3414</p> <p>0.00325 10.0835</p> <p>0.0035 9.82406</p> <p>0.00375 9.56646</p> <p>0.004 9.31349</p> <p>0.00425 9.06713</p> <p>0.0045 8.82918</p> <p>0.00475 8.60082</p> <p>0.005 8.3823</p> <p>0.00525 8.17379</p> <p>0.0055 7.97561</p> <p>0.00575 7.78777</p> <p>0.006 7.61007</p> <p>0.00625 7.44219</p> <p>0.0065 7.28392</p> <p>0.00675 7.13507</p> <p>0.007 6.99548</p> <p>0.00725 6.86493</p> <p>0.0075 6.74275</p> <p>0.00775 6.62832</p> <p>0.008 6.52152</p> <p>0.00825 6.42164</p> <p>0.0085 6.32835</p> <p>0.00875 6.24151</p> <p>0.009 6.16052</p> <p>0.00925 6.08491</p> <p>0.0095 6.01452</p> <p>0.00975 5.94897</p> <p>0.01 5.88786</p> <p>0.01025 5.83131</p> <p>0.0105 5.7787</p> <p>0.01075 5.72978</p> <p>0.011 5.68436</p> <p>0.01125 5.64228</p> <p>0.0115 5.60333</p> <p>0.01175 5.56712</p> <p>0.012 5.53346</p> <p>0.01225 5.5021</p> <p>0.0125 5.47301</p> <p>0.01275 5.44619</p> <p>0.013 5.42156</p> <p>0.01325 5.3988</p> <p>0.0135 5.37773</p> <p>0.01375 5.35853</p> <p>0.014 5.34102</p> <p>0.01425 5.32469</p> <p>0.0145 5.30957</p> <p>0.01475 5.29573</p> <p>0.015 5.28316</p> <p>0.01525 5.27177</p> <p>0.0155 5.26118</p> <p>0.01575 5.25136</p> <p>0.016 5.24246</p> <p>0.01625 5.23449</p> <p>0.0165 5.22729</p> <p>0.01675 5.22085</p> <p>0.017 5.21505</p> <p>0.01725 5.20996</p> <p>0.0175 5.20538</p> <p>0.01775 5.20125</p> <p>0.018 5.19797</p> <p>0.01825 5.195</p> <p>0.0185 5.19226</p> <p>0.01875 5.19015</p> <p>0.019 5.1885</p> <p>0.01925 5.18698</p> <p>0.0195 5.18558</p> <p>0.01975 5.18461</p> <p>0.02 5.18412</p> <p>0.02025 5.18363</p> <p>0.0205 5.18302</p> <p>0.02075 5.18277</p> <p>0.021 5.18289</p> <p>0.02125 5.1829</p> <p>0.0215 5.18274</p> <p>0.02175 5.18262</p> <p>0.022 5.18211</p> <p>0.02225 5.18139</p> <p>0.0225 5.1809</p> <p>0.02275 5.18047</p> <p>0.023 5.17976</p> <p>0.02325 5.17871</p> <p>0.0235 5.17765</p> <p>0.02375 5.17665</p> <p>0.024 5.17509</p> <p>0.02425 5.17287</p> <p>0.0245 5.17047</p> <p>0.02475 5.1679</p> <p>0.025 5.1648</p> <p>0.02525 5.16115</p> <p>0.0255 5.15706</p> <p>0.02575 5.15234</p> <p>0.026 5.14688</p> <p>0.02625 5.14071</p> <p>0.0265 5.13396</p> <p>0.02675 5.12621</p> <p>0.027 5.11737</p> <p>0.02725 5.10778</p> <p>0.0275 5.09726</p> <p>0.02775 5.08542</p> <p>0.028 5.07222</p> <p>0.02825 5.05787</p> <p>0.0285 5.04248</p> <p>0.02875 5.02603</p> <p>0.029 5.00788</p> <p>0.02925 4.98897</p> <p>0.0295 4.9649</p> <p>0.02975 4.88466</p> <p>0.03 4.81923</p> <p>Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com, Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China</p>
Chemical reactors with enhanced heat transfer for conducting simultaneous endothermic and exothermic reactions
<p><strong>Chemical reactors with enhanced heat transfer for conducting simultaneous endothermic and exothermic reactions</strong></p> <p>Junjie Chen</p> <p>Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China</p> <p>Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com</p> <p> </p> <p>Many chemical processes utilize catalysts to enhance chemical conversion behavior. A catalyst promotes the rate of chemical conversion but does not affect the energy transformations which occur during the reaction. Often catalytic processes are conducted within tubes which are packed with a suitable catalytic substance. The process gas flows within the tube and contacts the catalytic packing where reaction proceeds. The tube is placed within a hot environment such as a furnace such that the energy for the process can be supplied through the tube wall via conduction. The mechanism for heat transfer with this arrangement is rather tortuous as heat must first be transferred through the outer boundary layer of the tube, conducted through the often-heavy gauge wall of the tube and then pass through the inner boundary layer into the process gas. The process gas is raised in temperature and this energy can be utilized by the process for chemical reaction. The process engineer is often caused to compromise between the pressure drop within the tube reactor with the overall heat transfer and catalytic effectiveness. The inner heat transfer coefficient can be effectively increased by raising the superficial velocity of the process gas. The higher gas velocity therefore improves the thermal effectiveness of the system. However, higher gas velocities increase the system's pressure drop and results in increased compressor sizes and associated operating costs.</p> <p>Streamwise distance (meters), Heat flux (watts per square meter)</p> <p>0 27306.2</p> <p>0.00025 124496</p> <p>0.0005 117728</p> <p>0.00075 106208</p> <p>0.001 94912</p> <p>0.00125 85088</p> <p>0.0015 76704</p> <p>0.00175 69488</p> <p>0.002 63200</p> <p>0.00225 57712</p> <p>0.0025 52832</p> <p>0.00275 48528</p> <p>0.003 44704</p> <p>0.00325 41264</p> <p>0.0035 38144</p> <p>0.00375 35344</p> <p>0.004 32912</p> <p>0.00425 30720</p> <p>0.0045 28688</p> <p>0.00475 26832</p> <p>0.005 25184</p> <p>0.00525 23664</p> <p>0.0055 22272</p> <p>0.00575 21056</p> <p>0.006 19952</p> <p>0.00625 18912</p> <p>0.0065 17936</p> <p>0.00675 17072</p> <p>0.007 16288</p> <p>0.00725 15568</p> <p>0.0075 14864</p> <p>0.00775 14240</p> <p>0.008 13728</p> <p>0.00825 13216</p> <p>0.0085 12752</p> <p>0.00875 12304</p> <p>0.009 11840</p> <p>0.00925 11472</p> <p>0.0095 11168</p> <p>0.00975 10832</p> <p>0.01 10448</p> <p>0.01025 10128</p> <p>0.0105 9952</p> <p>0.01075 9776</p> <p>0.011 9472</p> <p>0.01125 9232</p> <p>0.0115 9136</p> <p>0.01175 8832</p> <p>0.012 8640</p> <p>0.01225 8688</p> <p>0.0125 8576</p> <p>0.01275 8432</p> <p>0.013 8320</p> <p>0.01325 8192</p> <p>0.0135 8016</p> <p>0.01375 7904</p> <p>0.014 7840</p> <p>0.01425 7728</p> <p>0.0145 7648</p> <p>0.01475 7552</p> <p>0.015 7488</p> <p>0.01525 7440</p> <p>0.0155 7360</p> <p>0.01575 7312</p> <p>0.016 7248</p> <p>0.01625 7184</p> <p>0.0165 7104</p> <p>0.01675 7024</p> <p>0.017 6992</p> <p>0.01725 7008</p> <p>0.0175 7008</p> <p>0.01775 6928</p> <p>0.018 6880</p> <p>0.01825 6880</p> <p>0.0185 6800</p> <p>0.01875 6720</p> <p>0.019 6720</p> <p>0.01925 6704</p> <p>0.0195 6640</p> <p>0.01975 6592</p> <p>0.02 6624</p> <p>0.02025 6592</p> <p>0.0205 6496</p> <p>0.02075 6464</p> <p>0.021 6512</p> <p>0.02125 6528</p> <p>0.0215 6448</p> <p>0.02175 6384</p> <p>0.022 6384</p> <p>0.02225 6320</p> <p>0.0225 6272</p> <p>0.02275 6288</p> <p>0.023 6272</p> <p>0.02325 6240</p> <p>0.0235 6192</p> <p>0.02375 6224</p> <p>0.024 6224</p> <p>0.02425 6160</p> <p>0.0245 6112</p> <p>0.02475 6112</p> <p>0.025 6080</p> <p>0.02525 5984</p> <p>0.0255 5968</p> <p>0.02575 6016</p> <p>0.026 6016</p> <p>0.02625 5936</p> <p>0.0265 5888</p> <p>0.02675 5904</p> <p>0.027 5888</p> <p>0.02725 5824</p> <p>0.0275 5776</p> <p>0.02775 5760</p> <p>0.028 5696</p> <p>0.02825 5568</p> <p>0.0285 5552</p> <p>0.02875 5584</p> <p>0.029 5472</p> <p>0.02925 5344</p> <p>0.0295 5280</p> <p>0.02975 5280</p> <p>0.03 5280</p> <p>Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com, Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China</p>
Catalytic reactors with enhanced chemical conversion behavior for conducting simultaneous endothermic and exothermic reactions
<p><strong>Catalytic reactors with enhanced chemical conversion behavior for conducting simultaneous endothermic and exothermic reactions</strong></p> <p>Junjie Chen</p> <p>Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China</p> <p>Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com</p> <p> </p> <p>It has been taught methods which may be used to transform a monolithic structure into a co-current or countercurrent flow heat exchanger. The monolith is transformed by cutting or grinding the uppermost section of diving walls from rows of channels contained in the honeycomb. The top end of the newly formed groove is then sealed with suitable cement. The depth of the sealant is such that an opening still exists in the side wall of the structure. A manifold is attached to this inlet. A similar exercise is performed at the opposing end to produce an outlet section. Hot gas is passed through the inlet whilst cold coolant is passed through the open end. Efficient heat transfer occurs between the two streams. However, the possibility of using such an arrangement for coupling endothermic and exothermic catalytic processes on opposing sides of each dividing wall is not taught. It has been taught a method to efficiently transfer energy through a divider by contacting a catalyst to the wall and performing an exothermic reaction there. The energy is conducted through the wall and used to heat a gas stream on the opposing side of the wall. An apparatus is described where multiple layers are formed with alternating hot and cold channels to produce a gas heater. However, the method does not discuss the possibility of utilizing this concept for thermally coupling endothermic and exothermic reactions within a monolith reactor.</p> <p>Streamwise distance (meter), Heterogeneous reaction rate along the length of the reactor (mole per square meter per second)</p> <p>0 1.88478</p> <p>0.00025 1.92635</p> <p>0.0005 2.0243</p> <p>0.00075 2.14121</p> <p>0.001 2.26285</p> <p>0.00125 2.38391</p> <p>0.0015 2.5016</p> <p>0.00175 2.61386</p> <p>0.002 2.71933</p> <p>0.00225 2.81695</p> <p>0.0025 2.9061</p> <p>0.00275 2.98659</p> <p>0.003 3.05831</p> <p>0.00325 3.12146</p> <p>0.0035 3.17647</p> <p>0.00375 3.22385</p> <p>0.004 3.26403</p> <p>0.00425 3.29778</p> <p>0.0045 3.32579</p> <p>0.00475 3.34828</p> <p>0.005 3.36585</p> <p>0.00525 3.37923</p> <p>0.0055 3.38901</p> <p>0.00575 3.39569</p> <p>0.006 3.39964</p> <p>0.00625 3.40142</p> <p>0.0065 3.40139</p> <p>0.00675 3.39974</p> <p>0.007 3.39685</p> <p>0.00725 3.39304</p> <p>0.0075 3.38846</p> <p>0.00775 3.38332</p> <p>0.008 3.37786</p> <p>0.00825 3.37216</p> <p>0.0085 3.36657</p> <p>0.00875 3.36135</p> <p>0.009 3.35646</p> <p>0.00925 3.35185</p> <p>0.0095 3.34767</p> <p>0.00975 3.34403</p> <p>0.01 3.3408</p> <p>0.01025 3.33803</p> <p>0.0105 3.33572</p> <p>0.01075 3.33405</p> <p>0.011 3.33301</p> <p>0.01125 3.33242</p> <p>0.0115 3.33227</p> <p>0.01175 3.33256</p> <p>0.012 3.33329</p> <p>0.01225 3.33451</p> <p>0.0125 3.33619</p> <p>0.01275 3.33825</p> <p>0.013 3.34069</p> <p>0.01325 3.34347</p> <p>0.0135 3.34647</p> <p>0.01375 3.34978</p> <p>0.014 3.35347</p> <p>0.01425 3.35729</p> <p>0.0145 3.36123</p> <p>0.01475 3.36531</p> <p>0.015 3.36946</p> <p>0.01525 3.37365</p> <p>0.0155 3.37777</p> <p>0.01575 3.38195</p> <p>0.016 3.38636</p> <p>0.01625 3.39101</p> <p>0.0165 3.3956</p> <p>0.01675 3.40005</p> <p>0.017 3.40456</p> <p>0.01725 3.40915</p> <p>0.0175 3.41362</p> <p>0.01775 3.41806</p> <p>0.018 3.42267</p> <p>0.01825 3.42714</p> <p>0.0185 3.43145</p> <p>0.01875 3.43582</p> <p>0.019 3.44022</p> <p>0.01925 3.44451</p> <p>0.0195 3.44872</p> <p>0.01975 3.45302</p> <p>0.02 3.45739</p> <p>0.02025 3.46153</p> <p>0.0205 3.46548</p> <p>0.02075 3.4695</p> <p>0.021 3.47355</p> <p>0.02125 3.47744</p> <p>0.0215 3.4811</p> <p>0.02175 3.48467</p> <p>0.022 3.48808</p> <p>0.02225 3.49137</p> <p>0.0225 3.49463</p> <p>0.02275 3.49784</p> <p>0.023 3.50085</p> <p>0.02325 3.50358</p> <p>0.0235 3.50617</p> <p>0.02375 3.50872</p> <p>0.024 3.51116</p> <p>0.02425 3.51353</p> <p>0.0245 3.51592</p> <p>0.02475 3.51817</p> <p>0.025 3.52004</p> <p>0.02525 3.52161</p> <p>0.0255 3.52305</p> <p>0.02575 3.52439</p> <p>0.026 3.52547</p> <p>0.02625 3.52614</p> <p>0.0265 3.52658</p> <p>0.02675 3.5265</p> <p>0.027 3.52593</p> <p>0.02725 3.5252</p> <p>0.0275 3.52428</p> <p>0.02775 3.52285</p> <p>0.028 3.52091</p> <p>0.02825 3.51866</p> <p>0.0285 3.51596</p> <p>0.02875 3.51277</p> <p>0.029 3.50899</p> <p>0.02925 3.5048</p> <p>0.0295 3.4992</p> <p>0.02975 3.4806</p> <p>0.03 3.46548</p> <p>Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com, Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China</p>
Microchannel steam reforming reactors with enhanced heat transfer for conducting simultaneous endothermic and exothermic reactions
<p><strong>Microchannel steam reforming reactors with enhanced heat transfer for conducting simultaneous endothermic and exothermic reactions</strong></p> <p>Junjie Chen</p> <p>Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China</p> <p>Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com</p> <p> </p> <p>It has been described a compact multiple tube steam reformer. The design consists of multiple packed tubes, of small diameter, being placed in intimate contact with a heat generating flame. The arrangement leads to improved heat transfer and therefore chemical conversion. However, the packed tube results in a significant pressure drop and the author states the process is still heat transfer limited. Therefore, a reactor design which minimizes the process side pressure drop and does not suffer from heat transfer limitation is required. It has been described a method to modify a monolithic structure into a combined heat exchanger reactor. The method describes the mechanical process to transform the structure into a structure consisting of two discrete volumes. It is proposed that the arrangement can either be used as a heat exchanger, where energy is transferred from one stream to another via conduction through the wall or it is suitable as a chemical reactor where the second set of channels allow the introduction of a heat transfer fluid. In the second case, the energy required or generated through the reaction is removed via a heat transfer fluid in the second channel. It is noted that the reaction can be a catalytic process and the catalytically active material can be coated onto the monolith passage walls to minimize pressure drop. In this arrangement, the heat transfer from the process catalyst to the dividing wall will be highly efficient, however, the uptake of the energy by the heat transfer fluid will suffer from all of the limitations of traditional heat transfer operations. In this case, the boundary layer will provide a significant resistance to heat transfer and will severely limit the rate of the process. Also, for this arrangement to successfully supply or remove heat and maintain a near isothermal longitudinal profile considerable heat transfer fluid velocities must be utilized. The high velocities will reduce the characteristic thickness of the boundary layer and ensure that a sufficient mass of heat transfer fluid is available to absorb the heat of reaction without significantly changing temperature. These requirements will lead to excessive pressure drop through the coolant channels. Therefore, a reactor design which minimizes the heat transfer fluid side pressure drop is required. The method does not teach about combining endothermic and exothermic reactions on opposing sides of dividing walls of adjacent channels as an efficient method of heat transfer.</p> <p>Streamwise distance (meters), Heat flux (watts per square meter)</p> <p>0 28082.8</p> <p>0.00025 139648</p> <p>0.0005 111616</p> <p>0.00075 93312</p> <p>0.001 81920</p> <p>0.00125 74112</p> <p>0.0015 68096</p> <p>0.00175 62976</p> <p>0.002 58752</p> <p>0.00225 55168</p> <p>0.0025 52096</p> <p>0.00275 49152</p> <p>0.003 46336</p> <p>0.00325 44032</p> <p>0.0035 41984</p> <p>0.00375 40064</p> <p>0.004 38400</p> <p>0.00425 36864</p> <p>0.0045 35328</p> <p>0.00475 33920</p> <p>0.005 32512</p> <p>0.00525 31360</p> <p>0.0055 30336</p> <p>0.00575 29184</p> <p>0.006 28288</p> <p>0.00625 27392</p> <p>0.0065 26496</p> <p>0.00675 25728</p> <p>0.007 24832</p> <p>0.00725 24192</p> <p>0.0075 23680</p> <p>0.00775 23040</p> <p>0.008 22400</p> <p>0.00825 21760</p> <p>0.0085 21376</p> <p>0.00875 21120</p> <p>0.009 20608</p> <p>0.00925 20224</p> <p>0.0095 19968</p> <p>0.00975 19456</p> <p>0.01 19072</p> <p>0.01025 18688</p> <p>0.0105 18432</p> <p>0.01075 18176</p> <p>0.011 17920</p> <p>0.01125 17792</p> <p>0.0115 17536</p> <p>0.01175 17280</p> <p>0.012 17024</p> <p>0.01225 16768</p> <p>0.0125 16640</p> <p>0.01275 16512</p> <p>0.013 16384</p> <p>0.01325 16256</p> <p>0.0135 16128</p> <p>0.01375 16000</p> <p>0.014 15872</p> <p>0.01425 15744</p> <p>0.0145 15488</p> <p>0.01475 15488</p> <p>0.015 15360</p> <p>0.01525 15104</p> <p>0.0155 15104</p> <p>0.01575 14976</p> <p>0.016 14848</p> <p>0.01625 14720</p> <p>0.0165 14720</p> <p>0.01675 14720</p> <p>0.017 14592</p> <p>0.01725 14336</p> <p>0.0175 14336</p> <p>0.01775 14464</p> <p>0.018 14336</p> <p>0.01825 14336</p> <p>0.0185 14336</p> <p>0.01875 14208</p> <p>0.019 14080</p> <p>0.01925 14080</p> <p>0.0195 14080</p> <p>0.01975 14080</p> <p>0.02 13952</p> <p>0.02025 13824</p> <p>0.0205 13824</p> <p>0.02075 13952</p> <p>0.021 13952</p> <p>0.02125 13824</p> <p>0.0215 13696</p> <p>0.02175 13568</p> <p>0.022 13568</p> <p>0.02225 13696</p> <p>0.0225 13696</p> <p>0.02275 13440</p> <p>0.023 13312</p> <p>0.02325 13440</p> <p>0.0235 13440</p> <p>0.02375 13312</p> <p>0.024 13312</p> <p>0.02425 13312</p> <p>0.0245 13312</p> <p>0.02475 13184</p> <p>0.025 13056</p> <p>0.02525 13056</p> <p>0.0255 13056</p> <p>0.02575 12800</p> <p>0.026 12672</p> <p>0.02625 12800</p> <p>0.0265 12672</p> <p>0.02675 12544</p> <p>0.027 12544</p> <p>0.02725 12288</p> <p>0.0275 12160</p> <p>0.02775 12160</p> <p>0.028 12032</p> <p>0.02825 12032</p> <p>0.0285 11904</p> <p>0.02875 11776</p> <p>0.029 11648</p> <p>0.02925 11520</p> <p>0.0295 11392</p> <p>0.02975 11008</p> <p>0.03 10624</p> <p>Contributor: Junjie Chen, ORCID: 0000-0001-5055-4309, E-mail address: komcjj@gmail.com, Department of Energy and Power Engineering, School of Mechanical and Power Engineering, Henan Polytechnic University, 2000 Century Avenue, Jiaozuo, Henan, 454000, P.R. China</p>
Privacy-Enhancing Technology and Everyday Augmented Reality: Understanding Bystanders' Varying Needs for Awareness and Consent
<p>This data is for our ACM IMWUT 2022 paper "Privacy-Enhancing Technology and Everyday Augmented Reality: Understanding Bystanders' Varying Needs for Awareness and Consent". See the README for more details.</p>
Enhanced isohydric behavior decoupled the whole-tree sap flux response to leaf transpiration under nitrogen addition in a subtropical forest
<p><span>Anthropogenic nitrogen deposition has the potential to change the leaf water-use strategy in the subtropical region of China. Nevertheless, the whole-tree level response crucial for ecosystem functions has not been well addressed over the past decades. In this study, the stem sap flux density (J<sub>S</sub>) was monitored for the whole-tree water transport capacity in two dominant species (<em>Schima</em> <em>superba</em> and <em>Castanopsis</em> <em>chinensis</em>) in a subtropical forest. To simulate the increased nitrogen deposition, the NH<sub>4</sub>NO<sub>3</sub> solutions were sprayed onto the forest canopy at 25 kg </span><span>ha<sup>-1</sup> year<sup>-1</sup></span><span> (CAN25) and 50 kg ha<sup>-1</sup> year<sup>-1</sup> (CAN50), respectively, since April 2013. The </span><span>J<sub>S</sub></span><span> and microclimate (monitored since January 2014) derived from the whole-tree level </span><span>stomatal conductance </span><span>(G<sub>S</sub>) were used to quantify the stomatal behavior </span><span>(G<sub>S</sub> sensitive to</span><span> vapor pressure deficit</span><span>, G<sub>S-VPD</sub>)</span><span> in response to the added nitrogen. </span><span>The maximum shoot hydraulic conductance (Kshoot-max) was also measured for both species. After one year of monitoring</span><span> in January 2015, the </span><span>mid-day (J<sub>S-mid</sub>) and daily mean (J<sub>S-mean</sub>) sap flux rates did not change under all the nitrogen addition treatments (p > 0.05). A consistent</span><span> decline in the </span><span>G<sub>S-VPD</sub></span><span> indicated an enhanced isohydric behavior for both species. In addition, the G<sub>S-VPD</sub></span><span> in the wet season was much lower than that in the dry season. </span><span><em>S</em>. <em>superba</em> </span><span>had a lower </span><span>G<sub>S-VPD</sub></span><span> and decreased J<sub>S-mid</sub>/J<sub>S-mean</sub>, implying a stronger stomatal control under the fertilization, which might be attributed to the low efficient diffuse-porous conduits and a higher JS. In addition, the G<sub>S</sub> for </span><span><em>S</em>. <em>superba</em></span><span> decreased and the </span><span>G<sub>S-VPD</sub></span><span> increased more under CAN50 than that under CAN25, indicating that the high nitrogen dose restrains the extra nitrogen benefits. Our results indicate</span><span>d</span><span> that the J<sub>S</sub> for both species was decoupled from the leaf transpiration for both species due to an enhanced isohydric behavior, and a xylem anatomy difference and fertilization dose would affect the extent of this decoupling relation.</span></p>
Higher-order sequences of vocal mimicry performed by male Albert's lyrebirds are socially transmitted and enhance acoustic contrast
<p>Most studies of acoustic communication focus on short units of vocalisation such as songs, yet these units are often hierarchically organised into higher-order sequences, and outside human language, little is known about the drivers of sequence structure. Here we investigate the organisation, transmission, and function of vocal sequences sung by male Albert's lyrebirds (<i>Menura alberti</i>), a species renowned for vocal imitations of other species. We quantified the organisation of mimetic units into sequences and examined the extent to which these sequences are repeated within and between individuals and shared among populations. We found that individual males organised their mimetic units into stereotyped sequences. Sequence structures were shared within and to a lesser extent among populations, implying that sequences were socially transmitted. Across the entire species range, mimetic units were sung with immediate variety and a high acoustic contrast between consecutive units, suggesting that sequence structure is a means to enhance receiver perceptions of repertoire complexity. Our results provide evidence that higher-order sequences of vocalisations can be socially transmitted, and that the order of vocal units can be functionally significant. We conclude that, to fully understand vocal behaviours, we must study both the individual vocal units and their higher-order temporal organisation.</p>
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.