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264 results on '"Qiu, Junjun"'

9. Artificial intelligence: A powerful paradigm for scientific research

Author

Xu, Yongjun, Liu, Xin, Cao, Xin, Huang, Changping, Liu, Enke, Qian, Sen, Liu, Xingchen, Wu, Yanjun, Dong, Fengliang, Qiu, Cheng-Wei, Qiu, Junjun, Hua, Keqin, Su, Wentao, Wu, Jian, Xu, Huiyu, Han, Yong, Fu, Chenguang, Yin, Zhigang, Liu, Miao, Roepman, Ronald, Dietmann, Sabine, Virta, Marko, Kengara, Fredrick, Zhang, Ze, Zhang, Lifu, Zhao, Taolan, Dai, Ji, Yang, Jialiang, Lan, Liang, Luo, Ming, Liu, Zhaofeng, An, Tao, Zhang, Bin, He, Xiao, Cong, Shan, Liu, Xiaohong, Zhang, Wei, Lewis, James P., Tiedje, James M., Wang, Qi, An, Zhulin, Wang, Fei, Zhang, Libo, Huang, Tao, Lu, Chuan, Cai, Zhipeng, Wang, Fang, and Zhang, Jiabao

Published
2021
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10. 10.3 A 7GHz Digital PLL with Cascaded Fractional Divider and Pseudo-Differential DTC Achieving -62.1dBc Fractional Spur and 143.7fs Integrated Jitter

Author

Xu, Dingxin, primary, Liu, Zezheng, additional, Kuai, Yifeng, additional, Huang, Hongye, additional, Zhang, Yuncheng, additional, Sun, Zheng, additional, Liu, Bangan, additional, Wang, Wenqian, additional, Xiong, Yuang, additional, Qiu, Junjun, additional, Madany, Waleed, additional, Zhang, Yi, additional, Fadila, Ashbir Aviat, additional, Shirane, Atsushi, additional, and Okada, Kenichi, additional

Published
2024
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11. A Time-Mode-Modulation Digital Quadrature Power Amplifier Based on 1-bit Delta–Sigma Modulator and Hybrid FIR Filter

Author

Zhang, Yuncheng, primary, Sun, Zheng, additional, Liu, Bangan, additional, Qiu, Junjun, additional, Xu, Dingxin, additional, Zhang, Yi, additional, Fu, Xi, additional, You, Dongwon, additional, Huang, Hongye, additional, Madany, Waleed, additional, Fadila, Ashbir Aviat, additional, Liu, Zezheng, additional, Wang, Wenqian, additional, Xiong, Yuang, additional, Shirane, Atsushi, additional, and Okada, Kenichi, additional

Published
2024
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17. Strain to shine: stretching-induced three-dimensional colloidal lattice transformations and optical transitions

Author

Zhao, Qibin, primary, An, Tong, additional, Jiang, Xinyu, additional, Gao, Feng, additional, Schäfer, Christian, additional, Qiu, Junjun, additional, Nan, Shi, additional, Song, Xiaokun, additional, Zhang, Manyao, additional, Finlayson, Chris, additional, Zheng, Xuezhi, additional, Li, Xiuhong, additional, Tian, Feng, additional, Zhu, Bin, additional, Sui, Tan, additional, Han, Xianhong, additional, Baumberg, Jeremy, additional, and Fan, Tongxiang, additional

Published
2023
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21. USP14 promotes the proliferation of cervical cancer via upregulating β‐catenin.

Author

Song, Han, Qiu, Junjun, and Hua, Keqin

Subjects
DEUBIQUITINATING enzymes, CERVICAL cancer, CATENINS, PHASE transitions, CELL communication, HELA cells
Abstract

In recent years, the ubiquitin–proteasome system (UPS) has become a hot spot in medical research in cervical cancer (CC) and has received extensive attention. Among them, ubiquitin‐specific protease 14 (USP14) is involved in a wide variety of typical cell signaling pathways and is recognized to be involved in the progression of most known tumors. However, the expression and significance of USP14 in CC have not been directly studied. Through database analysis, we found that USP14 was overexpressed in CC, which influenced the FIGO stage and prognosis of CC patients, and it was positively correlated with the expression level of β‐catenin. In this study, USP14 promoted the G1‐S phase transition of Hela and Siha cells and inhibited cell apoptosis, thereby promoting the proliferation, migration, and invasion of CC cells. In addition, USP14 also significantly promoted the growth of subcutaneous tumor in nude mice. We also found that overexpression of USP14 significantly upregulated β‐catenin expression and increased the activity of Wnt/β‐catenin signaling pathway. While knockdown of USP14 resulted in the opposite. These results suggest that USP14 may promote the proliferation of CC by up‐regulating the expression of β‐catenin, contributing to a deeper understanding of the mechanisms of CC and providing a potential therapeutic target. [ABSTRACT FROM AUTHOR]

Published
2024
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22. A Time-Mode-Modulation Digital Quadrature Power Amplifier Based on 1-bit Delta-Sigma Modulator and Transformer Combined FIR FIlter

Author

Zhang, Yuncheng, primary, Sun, Zheng, additional, Liu, Bangan, additional, Qiu, Junjun, additional, Xu, Dingxin, additional, Zhang, Yi, additional, Fu, Xi, additional, You, Dongwon, additional, Huang, Hongye, additional, Madany, Waleed, additional, Fadila, Ashbir Aviat, additional, Liu, Zezheng, additional, Wang, Wenqian, additional, Xiong, Yuang, additional, Shirane, Atsushi, additional, and Okada, Kenichi, additional

Published
2023
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23. A 6.5-to-8GHz Cascaded Dual-Fractional-N Digital PLL Achieving -63.7dBc Fractional Spurs with 50MHz Reference

Author

Xu, Dingxin, primary, Zhang, Yuncheng, additional, Huang, Hongye, additional, Sun, Zheng, additional, Liu, Bangan, additional, Fadila, Ashbir Aviat, additional, Qiu, Junjun, additional, Liu, Zezheng, additional, Wang, Wenqian, additional, Xiong, Yuang, additional, Madany, Waleed, additional, Shirane, Atsushi, additional, and Okada, Kenichi, additional

Published
2023
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33. A 32kHz-Reference 2.4GHz Fractional-N Nonuniform Oversampling PLL with Gain-Boosted PD and Loop-Gain Calibration

Author

Qiu, Junjun, primary, Wang, Wenqian, additional, Sun, Zheng, additional, Liu, Bangan, additional, Zhang, Yuncheng, additional, Xu, Dingxin, additional, Huang, Hongye, additional, Fadila, Ashbir Aviat, additional, Liu, Zezheng, additional, Madany, Waleed, additional, Xiong, Yuang, additional, Shirane, Atsushi, additional, and Okada, Kenichi, additional

Published
2023
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34. Single‐Cell Landscape Highlights Heterogenous Microenvironment, Novel Immune Reaction Patterns, Potential Biomarkers and Unique Therapeutic Strategies of Cervical Squamous Carcinoma, Human Papillomavirus‐Associated (HPVA) and Non‐HPVA Adenocarcinoma

Author

Qiu, Junjun, primary, Qu, Xinyu, additional, Wang, Yumeng, additional, Guo, Chenyan, additional, Lv, Bin, additional, Jiang, Qian, additional, Su, Wentao, additional, Wang, Li, additional, and Hua, Keqin, additional

Published
2023
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36. Intraoperative frozen pathology exam of Common iliac lymph nodes and Para-Aortic lymphadenectomy on the prognosis and quality of life for patients with IB2-IIA2 Cervical Cancer: trial protocol for a randomized controlled trial (C-PACC trial)

Author

Qu, Xinyu, primary, Qiu, Junjun, additional, Jiang, Lili, additional, Qi, Xiaorong, additional, Zhang, Guonan, additional, Feng, Weiwei, additional, Wang, Yudong, additional, Teng, Yincheng, additional, Wang, Xipeng, additional, Guo, Xiaoqing, additional, and Hua, Keqin, additional

Published
2023
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38. A Ka-Band SATCOM Transceiver in 65-nm CMOS With High-Linearity TX and Dual-Channel Wide-Dynamic-Range RX for Terrestrial Terminal

Author

Wang, Yun, YOU, Dongwon, You, Dongwon, Fu, Xi, Nakamura, Takeshi, Fadila, Ashbir Aviat, Kawaguchi, Atsuhiro, Qiu, Junjun, Pang, Jian, Jian, Pang, Liu, Bangan, Zhang, Yuncheng, Zhang, Haosheng, Wu, Rui, Shirane, Atsushi, and Okada, Kenichi

Subjects
Physics, CMOS, business.industry, Amplifier, Electrical engineering, Baseband, Adjacent-channel interference, Electrical and Electronic Engineering, Wideband, Transceiver, business, Multiplexing, Frequency-division multiplexing
Abstract

In this article, a Ka-band satellite communication (SATCOM) transceiver is first presented using a standard CMOS technology. The proposed Ka-band SATCOM transceiver consists of a high-linearity transmitter (TX) and dual-channel receiver (RX); both TX and RX are based on direct-conversion architecture. By implementing the dual-channel RX, multiple multiplexing modes, including polarization multiplexing and frequency multiplexing, can be enabled depending on the application. The RX variable gain is distributed in both RF blocks and baseband blocks to achieve a wide input dynamic range. The LNA employs a dual-coupling transformer for a low-noise figure (NF) and wideband input matching; moreover, it enhances the amplifier unilateralization characteristic to mitigate the loading effect from switched attenuators. An adjacent channel interference (ACI) cancellation scheme is proposed to further enhance the RX linearity in the frequency multiplexing mode. In the TX, single-turn high-quality-factor transformer is employed to realize matching network and four-way power combining. A prototype of the SATCOM transceiver is fabricated in a standard 65-nm CMOS process. Under 1.05-V supply voltage, the TX achieves a ${P{_{SAT}}}$ of 20.5 dBm and an average output power of 12 dBm with 2% error vector magnitude (EVM) and a 37.6-dB ACPR. The dual-channel RX achieves an NF of 5.4 dB, an IIP3 of -30 dBm on the high-gain mode, the ACI cancellation is measured of 7.9 dB with a 100-MHz signal bandwidth.

Published
2022

40. A 32kHz-Reference 2.4GHz Fractional-N Oversampling PLL with 200kHz Loop Bandwidth

Author

Qiu, Junjun, Sun, Zheng, Liu, Bangan, Wang, Wenqian, XU, Dingxin, Xu, Dingxin, HERDIAN, HANS, Herdian, Hans, HUANG, Hongye, Huang, Hongye, Zhang, Yuncheng, Wang, Yun, Pang, Jian, Jian, Pang, Liu, Hanli, Nohara (Miyahara), Masaya, Shirane, Atsushi, and Okada, Kenichi

Subjects
Phase-locked loop, Analogue electronics, CMOS, Sampling (signal processing), Comparator, Computer science, Hardware_INTEGRATEDCIRCUITS, Electronic engineering, Oversampling, Electrical and Electronic Engineering, Phase detector, Jitter
Abstract

In this article, a mixed-signal, 32-kHz reference-based 2.4-GHz fractional-N over-sampling phase-locked loop (OSPLL) is proposed. Different from the conventional 1x sampling PLL, which only uses zero-crossing timing information of the reference signal, the proposed OSPLL fully utilizes both the voltage and timing domain information of the reference signal and realizes oversampling ratio (OSR) times phase detection (PD) in one reference cycle. The proposed OSPLL employs the digital-to-analog converter (DAC) to construct the reference-like feedback signal in the voltage domain and utilizes the digital-to-time converter (DTC) to improve PD resolution in the time domain. The adaptive lookup table (LuT)-based calibration is proposed to generate the correct information for DAC and DTC control. A clocked passive comparator works as a bang-bang phase detector (BBPD) for the PLL control and LuTs' construction. The co-design of low-noise analog circuits and digital calibrations enables good jitter and spur performance. The proposed OSPLL is fabricated in 65-nm CMOS technology, with the core area of 0.58 mm², and the power consumption is 4.97 mW with a 1-V power supply. It achieves 5.79-ps root-mean-square (rms) jitter in fractional-N modes with the loop-bandwidth (BW $_{loop}$ ) of 200 kHz, corresponding to the figures of merit (FoMs) of -217.8 dB. The measured fractional spur is less than -36 dBc, and the reference spur is -78 dBc, respectively.

Published
2021

47. Additional file 1 of A novel Silva pattern-based model for precisely predicting recurrence in intermediate-risk cervical adenocarcinoma patients

Author

Guo, Chenyan, Tao, Xiang, Zhang, Lihong, Zhang, Ying, Hua, Keqin, and Qiu, Junjun

Abstract

Additional file 1: Table S1. Baseline characteristics of 345 patients with cervical adenocarcinoma. Table S2. The identification of cut-off value for intermediate risk factors in AC patients. Table S3. Performance comparison in best model. Table S4. Three-factor model performance comparison. Table S5. Three-factor model performance comparison

Published
2022
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