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Wang, Yong-Hao,Wang, Songhu,Liu, Hui-Gen,Hinse, Tobias C.,Laughlin, Gregory,Wu, Dong-Hong,Zhang, Xiaojia,Zhou, Xu,Wu, Zhenyu,Zhou, Ji-Lin,Wittenmyer, R. A.,Eastman, Jason,Zhang, Hui,Hori, Yasunori,Nar American Astronomical Society 2017 The Astronomical journal Vol.154 No.2
<P>We present 10. R-band photometric observations of eight different transits of the hot Jupiter HAT-P-33b, which has been targeted by our Transiting Exoplanet Monitoring Project. The data were obtained by two telescopes at the Xinglong Station of National Astronomical Observatories of China (NAOC) from 2013 December through 2016 January, and exhibit photometric scatter of 1.6-3.0 mmag. After jointly analyzing the previously published photometric data, radial-velocity (RV) measurements, and our new light curves, we revisit the system parameters and orbital ephemeris for the HAT-P-33b system. Our results are consistent with the published values except for the planet to. star radius ratio (RP/R-*), the ingress/egress duration (tau) and the total duration (T-14), which together indicate a slightly shallower and shorter transit shape. Our results are based on more complete light curves, whereas the previously published work had only one complete transit light curve. No significant anomalies in Transit Timing Variations (TTVs) are found, and we place upper mass limits on potential perturbers, largely supplanting the loose constraints provided by the extant RV data. The TTV limits are stronger near mean-motion resonances, especially for the low-order commensurabilities. We can exclude the existence of a perturber with mass larger than 0.6, 0.3, 0.5, 0.5, and 0.3 M-circle plus near the 1: 3, 1: 2, 2: 3, 3: 2, and 2: 1 resonances, respectively.</P>
P800SO3-PEG: a renal clearable bone-targeted fluorophore for theranostic imaging
Haoran Wang,강호만,Jason Dinh,Shinya Yokomizo,Wesley R. Stiles,Molly Tully,Kevin Cardenas,Surbhi Srinivas,Jason Ingerick,Sung Ahn,Kai Bao,최학수 한국생체재료학회 2022 생체재료학회지 Vol.26 No.4
Background: Due to the deep tissue penetration and reduced scattering, NIR-II fluorescence imaging is advantageous over conventional visible and NIR-I fluorescence imaging for the detection of bone growth, metabolism, metastasis, and other bone-related diseases. Methods: Bone-targeted heptamethine cyanine fluorophores were synthesized by substituting the meso-carbon with a sulfur atom, resulting in a bathochromic shift and increased fluorescence intensity. The physicochemical, optical, and thermal stability of newly synthesized bone-targeted NIR fluorophores was performed in aqueous solvents. Calcium binding, bone-specific targeting, biodistribution, pharmacokinetics, and 2D and 3D NIR imaging were performed in animal models. Results: The newly synthesized S-substituted heptamethine fluorophores demonstrated a high affinity for hydroxyapatite and calcium phosphate, which improved bone-specific targeting with signal-background ratios > 3.5. Particularly, P800SO3-PEG showed minimum nonspecific uptake, and most unbound molecules were excreted into the urinary bladder. Histological analyses demonstrated that P800SO3-PEG remained stable in the bone for over two weeks and was incorporated into bone matrices. Interestingly, the flexible thiol ethylene glycol linker on P800SO3-PEG induced a promising photothermal effect upon NIR laser irradiation, demonstrating potential theranostic imaging. Conclusions: P800SO3-PEG shows a high affinity for bone tissues, deeper tissue imaging capabilities, minimum nonspecific uptake in the major organs, and photothermal effect upon laser irradiation, making it optimal for bonetargeted theranostic imaging.
Sequential Processing: Control of Nanomorphology in Bulk Heterojunction Solar Cells
Wang, Dong Hwan,Moon, Ji Sun,Seifter, Jason,Jo, Jang,Park, Jong Hyeok,Park, O Ok,Heeger, Alan J. American Chemical Society 2011 Nano letters Vol.11 No.8
<P>Bulk heterojunction organic photovoltaic devices based on poly[<I>N</I>-9′′-hepta-decanyl-2,7-carbazole-<I>alt</I>-5,5-(4′,7′-di-2-thienyl-2′,1′,3′-benzothiadiazole) (PCDTBT)/[6,6]-phenyl C<SUB>70</SUB> butyric acid methyl ester (PC<SUB>70</SUB>BM) can be successfully fabricated by a sequential solution deposition process. When the top layer is deposited from an appropriate cosolvent, the PC<SUB>70</SUB>BM penetrates a predeposited bottom layer of PCDTBT during the spin-casting process, resulting in an interdiffused structure with a layer-evolved bulk heterojunction (LE-BHJ) nanomorphology. The PCDTBT:PC<SUB>70</SUB>BM LE-BHJ solar cells prepared with an optimized cosolvent ratio have comparable power conversion efficiency to the conventional BHJ solar cells. The nanomorphology of the optimized PCDTBT:PC<SUB>70</SUB>BM LE-BHJ mixture was found to have better vertical connectivity than the conventional BHJ material.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/nalefd/2011/nalefd.2011.11.issue-8/nl202320r/production/images/medium/nl-2011-02320r_0008.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/nl202320r'>ACS Electronic Supporting Info</A></P>
Performance analysis of smart cultural heritage protection oriented wireless networks
Wang, YuPeng,Dai, Xin,Jung, Jason J.,Choi, Chang North-Holland 2018 Future generations computer systems Vol.81 No.-
<P><B>Abstract</B></P> <P>Currently, Internet of Things (IoT) and wireless sensor network (WSN) techniques are widely used in the cultural heritage protection oriented networks for the environment monitoring, security enhancement issues, and <I>etc</I>. However, the low transmission rate and expandability of IoT and WSN limit the application variety of heritage protection networks. In this paper, we introduce the concept of device to device (D2D) communication manner from the 5G mobile network into the smart cultural heritage protection networks to solve the problems of various service requirement and coverage hole due to the location of the heritage. To enable the direct transmission among nodes, flooding based broadcast message transmission is widely utilized, which is used to obtain the prior knowledge that will be further used in the neighbor discovery, routing and other procedures. In this paper, we analyze the performance of flooding based broadcast message reception in D2D mode, where the influence of random time slot selection and message collision are reflected. Based on the random time slot selection manner and the related random process theory, we established the close form expression on the average number of received broadcast messages in the case of D2D without the coordination of central control node. Then, the proposed close form expression is validated through a numerical analysis platform. From the validation results, we find that the introduced closed form expression on the average number of received D2D broadcast packets is consistent with the simulation results.</P> <P><B>Highlights</B></P> <P> <UL> <LI> We introduce D2D into Smart CH to enhance service provision variety. </LI> <LI> The procedure of flooding based message transmission in D2D of smart CH is analyzed. </LI> <LI> We propose a close-form analysis model for D2D in smart CH. </LI> </UL> </P>
Jason J. Yao,Keh-Jeng Chang,Wei-Che Chuang,Jimmy S. Wang 대한전자공학회 2005 Journal of semiconductor technology and science Vol.5 No.4
With the advent of sub-90㎚ technologies, the system-on-chip (SoC) and system-in-package (SiP) are becoming the trend in delivering low-cost, lowpower, and small-form-factor consumer electronic systems running at multiple ㎓. The shortened transistor channel length reduces the transistor switching cycles to the range of several picoseconds, yet the time-of-flights of the critical on-chip and off-chip interconnects are in the range of 10 picoseconds for 1.5㎜-long wires and 100 picoseconds for 15㎜-long wires. Designers realize the bottleneck today often lies at chip-to-chip interconnects and the industry needs a good model to compute the inductance in these parts of circuits. In this paper we propose a new method for extracting accurate equivalent inductance circuit models for SPICE-level circuit simulations of systemon- chip (SoC) and system-in-package (SiP) designs. In our method, geometrical meshes are created and numerical methods are used to find the solutions for the electromagnetic fields over the fine meshes. In this way, multiple-㎓ SoC and SiP designers can use accurate inductance modeling and interconnect optimization to achieve high yields.
Leigh, Jason,Renambot, Luc,Johnson, Andrew,Jeong, Byungil,Jagodic, Ratko,Schwarz, Nicholas,Svistula, Dmitry,Singh, Rajvikram,Aguilera, Julieta,Wang, Xi,Vishwanath, Venkatram,Lopez, Brenda,Sandin, Dan Elsevier 2006 Future generation computer systems Vol.22 No.8
<P><B>Abstract</B></P><P>The research outlined in this paper marks an initial global cooperative effort between visualization and collaboration researchers to build a persistent virtual visualization facility linked by ultra-high-speed optical networks. The goal is to enable the comprehensive and synergistic research and development of the necessary hardware, software and interaction techniques to realize the next generation of end-user tools for scientists to collaborate on the global Lambda Grid. This paper outlines some of the visualization research projects that were demonstrated at the iGrid 2005 workshop in San Diego, California.</P>