2,049 research outputs found
Experimental Study on Reinforced Concrete Jacketing for Seismic Retrofit and Repair of Bridge Columns
No full textEmergence, fecundity and longevity of Trichogramma ostriniae (Hymenoptera: Trichogrammatidae) after cold storage
No full text玉米螟赤眼卵寄生蜂（Trichogramma ostriniae Pang & Chen）用外米綴蛾(Corcyra cephalonica Stainton）卵做為代用寄主時，雌雄蜂自卵出生至成蟲羽化之嶺育速率皆隨溫度之升高而呈直線加快。其一次迴歸之R2 值分別達0.9962與0.9930，發育臨界低溫分別為9.59℃與8.91℃。將不同日齡蜂片分別在9℃與6℃、12℃下進行冷藏試驗，結果在12℃下之較老齡蜂片於冷藏期間即陸續羽化，其餘日齡蜂片冷藏5日後之潛在寄生數亦多比6、9℃者顯著較少，因此認為12℃較不適做為冷藏溫度。6℃與9℃之冷藏效果相近，但皆有負面影響。雌成蜂壽命，經此二溫度冷藏後分別為35-63日與28-50日，皆比對照組的90日顯著減短。潛在寄生數除第6日齡在9℃冷藏結果與對照組差異不顯著外，其餘處理皆顯著減少，其中尤以第3、4、8日齡蜂冷藏者更少。可知不同冷藏溫度對蜂片冷藏後之雌蜂羽化數、壽命及繁殖有不同之影響，而進入冷藏的日齡亦是影響冷藏效果的重要因素。
The developmental rate from egg to adult of female and male parasitoids (Trichogramma ostriniae Pang & Chen) reared on rice moth (Corcyra cephalonica Stainton) eggs went up with increasing of temperature. And the R -values by linear regression were 0.9962 and 0.9930, respectively, with 9.59℃ and 8.91 ℃ for low temperature development threshold. Cold storage of various day age parasitoid cards at 6, 9, or 12℃ was conducted in this study. Result showed that 12℃ was not a suitable temperature for cold storage because the parasitoid adults could emerge successively within stored period, and their potential parasitism were mostly significantly fewer than that was stored at 6℃ and 9℃. Cold storage at 6℃ and 9℃ achieved almost similar result, but both temperatures had various negative effects. Female adult longevity were 3.5-6.3 and 2.8-5.0 days for both temperatures respectively, which were shorter than the control of 9.0 days. The potential parasitism, the 3rd, 4th, 8th day age parasitoid of both temperature treatments were especially less than that of the control, except the 6th day age parasitoid at 9℃. Apparently, different temperatures could have different effects to the adult emergence, longevity and fecundity. And the stage of parasitoid is an important factor affecting the efficacy of cold storage
Kraichnan-Leith-Batchelor similarity theory and two-dimensional inverse cascades
No full textWe study the scaling properties and Kraichnan-Leith-Batchelor (KLB) theory of forced inverse cascades in generalized two-dimensional (2D) fluids (-turbulence models) simulated at resolution . We consider (surface quasigeostrophic flow), (2D vorticity dynamics) and . The forcing scale is well-resolved, a direct cascade is present and there is no large-scale dissipation. Coherent vortices spanning a range of sizes, most larger than the forcing scale, are present for both and . The active scalar field for contains comparatively few and small vortices. The energy spectral slopes in the inverse cascade are steeper than the KLB prediction in all three systems. Since we stop the simulations well before the cascades have reached the domain scale, vortex formation and spectral steepening are not due to condensation effects; nor are they caused by large-scale dissipation, which is absent. One- and two-point pdfs, hyperflatness factors and structure functions indicate that the inverse cascades are intermittent and non-Gaussian over much of the inertial range for and , while the inverse cascade is much closer to Gaussian and non-intermittent. For the steep spectrum is close to that associated with enstrophy equipartition. Continuous wavelet analysis shows approximate KLB scaling () and () in the interstitial regions between the coherent vortices. Our results demonstrate that coherent vortex formation ( and ) and non-realizability () cause 2D inverse cascades to deviate from the KLB predictions, but that the flow between the vortices exhibits KLB scaling and non-intermittent statistics for and . The results will appear in \cite{BurgessEA2015}, which has been accepted to the \emph{Journal of Fluid Mechanics}
tFUS-EEG-BCI mVEP Speller Dataset for "Transcranial Focused Ultrasound to V5 Enhances Human Visual Motion Brain-Computer Interface by Modulating Feature-Based Attention"
No full textThis EEG Brain Computer Interface (BCI) dataset was collected as part of the study titled: “Transcranial Focused Ultrasound to V5 Enhances Human Visual Motion Brain-Computer Interface by Modulating Feature-Based Attention”. If you use a part of this dataset in your work, please cite the following publication:J. Kosnoff, K. Yu, C. Liu, and B. He, “Transcranial Focused Ultrasound to V5 Enhances Human Visual Motion Brain-Computer Interface by Modulating Feature-Based Attention.” bioRxiv, p. 2023.09.04.556252, Sep. 5, 2023. doi: 10.1101/2023.09.04.556252.In the shared dataset, the README file includes the essential data structure and event labels for reading the EEG data collected from 25 healthy human subjects in our study. The file "BCI Outcomes" includes the behavior readout associated with specific experiment conditions in this visual motion based BCI task implemented by those human subjects. The associated code and software to read the EEG data can be accessed through GitHub at https://github.com/bfinl/tFUS-mVEPBCI-Analysis. This work was supported by NIH grants R01NS124564 (PI: B.H.), R01AT009263 (PI: B.H.), U18EB029354 (PI: B.H.), T32EB029365 (J.K.), RF1NS131069 (PI: B.H.), R01NS096761 (PI: B.H.), and NS127849 (PI: B.H.), as well as National Science Foundation Graduate Research Fellowship Program grant DGE2140739 (J.K.). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Institutes of Health or the National Science Foundation.Please direct correspondence about the dataset to: Dr. Bin He, Carnegie Mellon University, Department of Biomedical Engineering, Pittsburgh, PA 15213. E-mail: [email protected]</p
FIGURE 1 in Taxonomic notes on Camellia crassicolumna and its related species (Theaceae)
No full textFIGURE 1. Type specimens of Camellia crassicolumna (C.P. Tsien 644, PE00024303) (A), C. kwangsiensis var. kwangnanica (B.H. Chen et al. A20002, SYS00095169) (B) and C. atrothea (B.H. Chen et al. A21002, SYS00095178) (C). Photo A by S.X. Yang, photos B and C from CVH (https://www.cvh.ac.cn/).Published as part of Jiang, Yin-Zi, Yu, Xiang-Qin, Zhang, Tao, Peng, Hua & Yang, Shi-Xiong, 2023, Taxonomic notes on Camellia crassicolumna and its related species (Theaceae), pp. 109-114 in Phytotaxa 595 (1) on page 110, DOI: 10.11646/phytotaxa.595.1.8, http://zenodo.org/record/788959
Soluble and multivalent Jag1 DNA origami nanopatterns activate Notch without pulling force
No full textFunding Information: The authors would like to acknowledge support from the NIH grant number R35GM133482 for V.C.L., the Knut and Alice Wallenberg Foundation (Grants KAW 2017.0114 for B.H. and A.I.T. and KAW 2017.0276 for B.H.), from the European Research Council ERC for B.H. (Acronym: Cell Track GA No. 724872) and A.I.T (Acronym: MechComm GA No. 617711), and from the Swedish Research Council for B.H. (grant no. 2019-01474) and from the Göran Gustafsson Foundation for B.H. And from the Academy of Finland for B.S. (grant no. 341908). lt-NES samples were obtained from, and initial culture protocols was made possible with the help of Anna Falk’s team and the iPS Core facility at Karolinska Institutet. Part of this work was performed at the Karolinska Institutet/SciLifeLab Protein Science Core Facility (PSF). Part of this work was performed at the Karolinska Institutet Biomedicum Imaging Core (BIC). EM data was collected at the Karolinska Institutet 3D-EM facility. Publisher Copyright: © 2024, The Author(s).The Notch signaling pathway has fundamental roles in embryonic development and in the nervous system. The current model of receptor activation involves initiation via a force-induced conformational change. Here, we define conditions that reveal pulling force-independent Notch activation using soluble multivalent constructs. We treat neuroepithelial stem-like cells with molecularly precise ligand nanopatterns displayed from solution using DNA origami. Notch signaling follows with clusters of Jag1, and with chimeric structures where most Jag1 proteins are replaced by other binders not targeting Notch. Our data rule out several confounding factors and suggest a model where Jag1 activates Notch upon prolonged binding without appearing to need a pulling force. These findings reveal a distinct mode of activation of Notch and lay the foundation for the development of soluble agonists.Peer reviewe
Multimode interference couplers: Design and applications
No full textElectrical Engineering, Mathematics and Computer Scienc
High Capacity Integrated Optical Receivers
No full textElectrical Engineering, Mathematics and Computer Scienc
InP-based Photonic Integrated Circuits for Wavelength Routing and Switching
No full textElectrical Engineering, Mathematics and Computer Scienc
Phased-array wavelength demultiplexers and their integration with photodetectors
No full textElectrical Engineering, Mathematics and Computer Scienc
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