11,332 research outputs found
Preimplantation diagnosis / Ke-hui Cui
No full textBibliography: leaves 126-147xiv, 147 leaves : ill ; 30 cm.Summary: Aims to develop reliable procedures for determining the genetic status of embryos derived by IVF procedures prior to implantation. Prenatal diagnosis allows pregnancy to be established using only acceptable embryosThesis (Ph.D.)--University of Adelaide, Dept. of Obstetrics and Gynaecology, 199
Slot Array Antenna using Folded Waveguides
No full textA highly compact slot array antenna using substrate integrated folded waveguides (SIFW) is proposed in this paper. The device has three key components: a non adiating SMA to standard waveguide transition, a power divider from standard waveguide to folded waveguides, and slot arrays on the folded waveguide. The antenna is built using two substrates aligned with conducting vias which makes the device, low profile, small size, low cost and easy to manufacture
Native p-type transparent conductive CuI via intrinsic defects
No full textThe ability of CuI to be doped p-type via the introduction of native defects has been investigated using first-principles pseudopotential calculations based on density functional theory. The Cu vacancy has a lower formation energy than any of the other native defects, which include I vacancy (V(I)), Cu interstitial (Cu(i)), I interstitial (I(i)), Cu antisite (Cu(I)), and I antisite (I(Cu)). Combined with its shallow acceptor level, it offers sufficient hole concentrations in CuI. The natural band alignments as compared to zinc-blende ZnS, ZnSe, and ZnTe have also been calculated in order to further identify the p-type dopability of CuI. It is found that CuI has a relatively high valence band maximum and conduction band minimum, which also makes it easy to dope CuI p-type in terms of the doping limit rule. In addition, the small effective mass of the light hole-about 0.303m(0)-can provide high mobility and p-type conductivity in CuI. All of these results make CuI an ideal candidate for native p-type materials (C) 2011 American Institute of Physics. [doi:10.1063/1.3633220
Youthhood
No full textTESTING-GROUND issue 03, Youthhood, examines worlds through youthful eyes, makes evident young ambitions, and questions how we can better empower young people to design cities, landscapes, and a planet that works for them. The issue includes contributions from: Carmel Keren, Jude Daniel Smith, Claire Edwards, Kazeem Kuteyi, Emmanuel Adarkwah, Reza Nik, Dan Cui, Kristofer Cullum-Fernandez, Fida Sassi, Simeon Shtebunaev, Daze Aghaji, Averill Dimabuyu, Sarri Elfaitouri, Rebecca McDonald-Balfour, and Ed Wall.
Rebecca McDonald-Balfour (Author), Jude Daniel Smith (Author), Daze Aghaji (Author), Carmel Keran (Author), Alexis Liu (Author), Dan Cui (Author), Kristofer Cullum-Fernandez (Author), Fida Sassi (Author), Averill Dimabuyu (Author), Ed
Impact damage of composite laminates with high-speed waterjet
No full textRain erosion may cause substantial damage to aircrafts during supersonic flight. Such event is investigated here via high-speed waterjet impact on composite laminates. An experimental setup is developed to produce waterjets with the speed up to 700m/s and a finite element model of the waterjet-composite impact event is established. The consistency of experiment and simulation results validates the adopted numerical methods. The distribution of the water-hammer pressure is non-uniform and the maximum pressure occurs near the contact periphery when the water is about to eject laterally. After a high-speed (300∼560m/s) waterjet impacts a composite laminate, the impacted surface depression is observed, and the typical surface damage presents a central region with no visible surface damage surrounded by a faded “failure ring” with resin removal, matrix cracking and minor fiber fracture. Delamination occurs at the interfaces of adjacent layers with unequal dimensions and longitudinal matrix cracking appears on the back surface. Both the velocity and the diameter of waterjets are crucial factors on CFRP damage extents. Water-hammer pressure, the stagnation pressure and propagation of stress waves are failure mechanisms for most matrix damage in CFRP impacted by waterjets.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Structural Integrity & Composite
The larvae of Altica koreana (Ogloblin) and A. viridicyanea (Baly) (Coleoptera: Chrysomelidae: Galerucinae: Alticini)
No full textHua, Yi, Ge, Si-Qin, Beutel, Rolf Georg, Zhang, Yong, Cui, Jun-Zhi, Yang, Xing-Ke (2013): The larvae of Altica koreana (Ogloblin) and A. viridicyanea (Baly) (Coleoptera: Chrysomelidae: Galerucinae: Alticini). Zootaxa 3694 (5): 461-470, DOI: 10.11646/zootaxa.3694.5.
Controlled release of curcumin from curcumin-loaded nanomicelles to prevent peritendinous adhesion during Achilles tendon healing in rats
No full textWe introduced curcumin-loaded nanomicelles into a tendon-healing model to evaluate their effects on tendon healing and adhesion. Three groups consisting of 36 rats underwent rupture and repair of the Achilles tendon. The treatment group received an injection of curcumin-loaded nanomicelles (gold nanorods [GNRs]-1/ curcumin in polymeric nanomicelles [curc@PMs] at a dosage of 0.44 mg curcumin/kg in 0.1 mL saline) into the surgical site and exposed to laser postoperatively at weeks 1, 2, and 3, for three times 10 seconds each, on the surgical site in the rats that underwent tendon rupture and repair, while the other two groups received 0.44 mg curcumin/kg in 0.1 mL saline and 0.1 mL of saline, respectively. The specimens were harvested at 4 weeks and subjected to biomechanical and histological evaluation. The scoring results of tendon adhesion indicated that GNRs-1/curc@PMs group was in the lowest grade of peritendinous adhesions compared to the other groups. Histological assessment further confirmed the preventive effect of GNRs-1/curc@PMs on tendon adhesion. These findings indicated greater tendon strength with less adhesion in the group treated with GNRs-1/curc@PMs combined with laser exposure, and that nanoparticle-based therapy may be applied to prevent adhesion in clinical patients
Sampling and Reconstruction of Signals on Product Graphs
No full textIn this paper, we consider the problem of subsampling and reconstruction of signals that reside on the vertices of a product graph, such as sensor network time series, genomic signals, or product ratings in a social network. Specifically, we leverage the product structure of the underlying domain and sample nodes from the graph factors. The proposed scheme is particularly useful for processing signals on large-scale product graphs. The sampling sets are designed using a low-complexity greedy algorithm and can be proven to be near-optimal. To illustrate the developed theory, numerical experiments based on real datasets are provided for sampling 3D dynamic point clouds and for active learning in recommender systems.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Signal Processing System
Sintesis Tembaga Iodida (CuI) sebagai Hole Transport Material pada Solid-State DSSC
No full textSintesis tembaga iodida (CuI) dengan teknik sonikasi telah dilakukan. Sintesis dilakukan dengan variasi waktu sonikasi 10, 20, dan 40 menit. Hasil karakterisasi XRD (difraksi sinar-X) menunjukkan bahwa CuI yang telah disintesis memiliki kristalinitas yang tinggi dengan ukuran kristal (D) menurun seiring dengan bertambahnya waktu sonikasi. Penghalusan dengan program Rietica menunjukkan bahwa CuI tersebut berfasa γ dengan struktur kubik. Analisa XRF (fluoresensi sinar-X) membuktikan kemurnian yang tinggi dari CuI hasil sintesis. Termogram TGA (analisis termal gravimetri) menunjukkan terjadinya dekomposisi material sebanyak 60,92% pada temperatur 621,61 °C, sedangkan kurva DTA (analisis diferensial termal) memperlihatkan dua puncak endotermik ketika temperatur 366,12 dan 401,22 °C yang muncul karena adanya transformasi fasa dari γ ke β dan β ke α. CuI yang telah disintesis digunakan sebagai Hole Transport Material (HTM) dilanjutkan dengan penambahan tetrametiletilendiamin (TMED) variasi volume 0,1; 0,2; 0,4 mL dan TMED:NH4SCN dengan rasio 1:1; 1:2; 2:1 (v/v). Karakterisasi sifat optik senyawa tersebut menghasilkan energi celah pita langsung dan tidak langsungnya mulai dari 2,38 hingga 3,79 eV. Konduktivitas yang terukur pada HTM menunjukkan nilai yang maksimum pada CuI hasil 40 menit sonikasi, penambahan 0,4 mL TMED dalam CuI 0,05 M, dan CuI-TMED:NH4SCN rasio 2:1 yakni 0,26; 0,29; dan 0,39 S m-1, secara berturut-turut. Fabrikasi SS DSSC dengan menggunakan fotoanoda nanorods TiO2 tersensitasi kompleks N3 dan elektroda lawan platinum. Hasil uji performa SS DSSC meningkat nilai efisiensinya secara berurutan yakni TiO2|N3|Cu
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