Filters








51 Hits in 1.3 sec

Reciprocal phase transition-enabled electro-optic modulation [article]

Fang Zou, Lei Zou, Ye Tian, Yiming Zhang, Erwin Bente, Weigang Hou, Yu Liu, Siming Chen, Victoria Cao, Lei Guo, Songsui Li, Lianshan Yan (+6 others)
2022 arXiv   pre-print
Electro-optic (EO) modulation is a well-known and essential topic in the field of communications and sensing. Its ultrahigh efficiency is unprecedentedly desired in the current green and data era. However, dramatically increasing the modulation efficiency is difficult due to the monotonic mapping relationship between the electrical signal and modulated optical signal. Here, a new mechanism termed phase-transition EO modulation is revealed from the reciprocal transition between two distinct
more » ... planes arising from the bifurcation. Remarkably, a monolithically integrated mode-locked laser (MLL) is implemented as a prototype. A 24.8-GHz radio-frequency signal is generated and modulated, achieving a modulation energy efficiency of 3.06 fJ/bit improved by about four orders of magnitude and a contrast ratio exceeding 50 dB. Thus, MLL-based phase-transition EO modulation is characterised by ultrahigh modulation efficiency and ultrahigh contrast ratio, as experimentally proved in radio-over-fibre and underwater acoustic-sensing systems. This phase-transition EO modulation opens a new avenue for green communication and ubiquitous connections.
arXiv:2203.14823v1 fatcat:ts6txjpah5fbbieyb5dmpevpeq

Adult laryngeal Embryonal Rhabdomyosarcoma: a case report and literature review

Juanjuan Hu, Dan Lu, Jia Ren, Qiao Wen, Jing Zhou, Weigang Gan, Jun Liu, Shixi Liu, Hui Yang, Jian Zou
2020 BMC Surgery  
Laryngeal rhabdomyosarcomas (RMSs) mainly occurred in children, while were extremely rare in adults. Consequently, less information was available to guide clinicians to manage adult RMSs in larynx. A 42-year-old man presented with a 2-year history of gradually worsening hoarseness. Then, he underwent a surgery with suspension laryngoscope with initially being diagnosed as vocal cord cyst. Unexpectedly, the lesion was proved to be embryonal rhabdomyosarcoma (ERMS), pathologically. Next, he
more » ... ent chemoradiotherapy, while the tumor relapsed 18 months after the last treatment. Subsequently, a vertical hemilaryngectomy and a right selective neck dissection was performed, and the chemotherapy according to the anticancer drug sensitivity in vitro was arranged. Until the last check-up 18 months after chemotherapy, the patient did not display clinical or radiological signs of local recurrence and metastases. Misdiagnosis and missed diagnosis of laryngeal RMSs might appear when tumors presented as smooth protuberance. We reported the first case of laryngeal RMSs in an adult with the multidisciplinary strategy based on the chemosensitivity assay in vitro. Furthermore, a systematic review of the literature was also discussed, highlighting the initial diagnostic pitfalls and subsequent management problems that may occur with this uncommon tumor.
doi:10.1186/s12893-020-00831-7 pmid:32736545 fatcat:d5wtuwhndbg27mxa74tsjavd5e

NMR data for novel flavonoids from Lonicera japonica flower buds

Lanlan Ge, Jiemei Li, Haoqiang Wan, Keda Zhang, Weigang Wu, Xiaoting Zou, Shiping Wu, Boping Zhou, Jun Tian, Xiaobin Zeng
2018 Data in Brief  
open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). lists available at ScienceDirect journal homepage: www.elsevier.com/locate/dib Li JM, Wan HQ, Zhang KD, Wu WG, Zou  ... 
doi:10.1016/j.dib.2018.11.021 pmid:30555857 pmcid:PMC6276635 fatcat:kfpqusboubft5m6borcxdi4hgu

The surface energy balance of Austre Lovénbreen, Svalbard, during the ablation period in 2014

Xiaowei Zou, Minghu Ding, Weijun Sun, Diyi Yang, Weigang Liu, Baojuan Huai, Shuang Jin, Cunde Xiao
2021 Polar Research  
Zou et al.  ... 
doi:10.33265/polar.v40.5318 fatcat:dz6wvju2zzcyhnjmqm6yexyete

Analysis of the Pathological Examination Results of 100 Colon Polyps Cases after EMR or ESD Operation

Shibao Song, Weigang Liu, Dong Wang, Chuanxin Zou
2018 Yangtze Medicine  
Aim: To study the characteristics of EMR (endoscopic mucosal resection) or ESD (endoscopic submucosal dissection) postoperative pathological examination of colonic polyps in different age groups, and the difference of pathological examination after EMR or ESD operation. Methods: A retrospective analysis was made of the EMR or ESD postoperative pathological data of 100 cases of colonic polyps patients in the Jingzhou Central Hospital digestive internal medicine. The time is from March 2016 to
more » ... ch 2018. Results: In 100 cases of EMR or ESD operation, there are 65 cases of young and middle-aged group. Pathological examination results include: 34 cases of adenomatous polyp, 18 cases of inflammatory polyp, 11 cases of benign tumors, 1 case of malignant tumor, 1 case of hyperplastic polyp. There are 35 cases of elderly group. Pathological examination results include: 27 cases of adenomatous polyp, 2 cases of inflammatory polyp, 2 cases of benign tumors, 4 cases of malignant tumor. 71 cases of complete EMR operation include: 51 cases of adenomatous polyp, 17 cases of inflammatory polyp, 3 cases of benign tumors; 29 cases of complete ESD operation include: 10 cases of adenomatous polyp, 3 cases of inflammatory polyp, 10 cases of benign tumors, 5 cases of malignant tumor, 1 case of hyperplastic polyp. Conclusion: For the pathological examination results after EMR or ESD operation, the proportion of inflammatory polyps in the young and middle-aged group was greater than that in the elderly group. The proportion of adenomatous polyps in the elderly group was larger than that in the young and middle-aged group. The proportion of adenomatous polyps in EMR was greater than that of ESD. The proportion of benign tumors and malignant tumors in ESD was greater than that of EMR. The difference has statistical significance.
doi:10.4236/ym.2018.23020 fatcat:fafbbj6o4rc5tpdphkqhflu7mu

Clinical analysis of tracheobronchial foreign body aspiration in children: a focus on external and intrinsic factors

Weigang Gan, Ning Xiao, Yiyuan Feng, Danmei Zhou, Juanjuan Hu, Shixi Liu, Jian Zou
2021 BMC Surgery  
Funding This work was supported by grants to Weigang Gan from the Nanchong Social Science Research 13th Five-Year Plan Project (NC16B040) and the Science and Technology Strategic Cooperation Project of  ... 
doi:10.1186/s12893-021-01089-3 pmid:33658017 fatcat:i6vcgq5hfvbgbb76jgtnggqnpq

Integrated redox-active reagents for photoinduced regio- and stereoselective fluorocarboborylation

Weigang Zhang, Zhenlei Zou, Wenxuan Zhao, Shuo Lu, Zhengguang Wu, Mengjun Huang, Xiaochen Wang, Yi Wang, Yong Liang, Yi Zhu, Youxuan Zheng, Yi Pan
2020 Nature Communications  
Vinylboronates and alkylboronates are key components in variegated transformations in all facets of chemical science. The synthesis of vinylboronates and alkylboronates suffers from step-tedious and poor stereoselective procedures. We have developed a regulated radical difunctionalization strategy for the construction of fluorine-containing vinylboronates and alkylboronates with an integrated redox-active reagent IMDN-SO2RF. This bench-stable imidazolium sulfonate cationic salt offers a
more » ... and operational protocol for the fluoroalkylation-borylation of unsaturated hydrocarbons in a high regio- and stereoselective manner. The products can be further transformed into valuable fluorinated building blocks.
doi:10.1038/s41467-020-16477-1 pmid:32444596 fatcat:xdagqmjc75gyrgy3qyeptk63qm

Decompression Illness: Clinical Aspects of 5278 Consecutive Cases Treated in a Single Hyperbaric Unit

Wenbing Xu, Wenwu Liu, Guoyang Huang, ZiJiao Zou, Zhiyu Cai, Weigang Xu, Andrej A. Romanovsky
2012 PLoS ONE  
Decompression illness (DCI) is a major concern in pressure-related activities. Due to its specific prerequisite conditions, DCI is rare in comparison with other illnesses and most physicians are inexperienced in treatment. In a fishery area in northern China, during the past decade, tens of thousands of divers engaged in seafood harvesting and thousands suffered from DCI. We established a hyperbaric facility there and treated the majority of the cases. Methods and Results: A total of 5,278 DCI
more » ... ases were admitted in our facility from February 2000 through December 2010 and treated using our recompression schedules. Cutaneous abnormalities, joint and muscular pain and neurological manifestations were three most common symptoms. The initial symptom occurred within 6 h after surfacing in 98.9% of cases, with an overall median latency of 62 min. The shorter the latent time, the more serious the symptoms would be (P,0.0001). Nine cases died before recompression and 5,269 were treated using four recompression schedules, with an overall effectiveness rate of 99.3%. The full recovery rate decreased with the increase of the delay from the onset of symptoms to the treatment (P,0.0001). Conclusions: DCI presents specific occurrence rules. Recompression should be administered as soon as possible and should never be abandoned irrespective of the delay. The recompression schedules used were effective and flexible for variety conditions of DCI.
doi:10.1371/journal.pone.0050079 pmid:23185538 pmcid:PMC3503765 fatcat:2fp3xjik25gjxmiirzby4635km

Comparison of biparametric and multiparametric MRI in the diagnosis of prostate cancer

Lili Xu, Gumuyang Zhang, Bing Shi, Yanhan Liu, Tingting Zou, Weigang Yan, Yu Xiao, Huadan Xue, Feng Feng, Jing Lei, Zhengyu Jin, Hao Sun
2019 Cancer Imaging  
To compare the diagnostic accuracy of biparametric MRI (bpMRI) and multiparametric MRI (mpMRI) for prostate cancer (PCa) and clinically significant prostate cancer (csPCa) and to explore the application value of dynamic contrast-enhanced (DCE) MRI in prostate imaging. This study retrospectively enrolled 235 patients with suspected PCa in our hospital from January 2016 to December 2017, and all lesions were histopathologically confirmed. The lesions were scored according to the Prostate Imaging
more » ... eporting and Data System version 2 (PI-RADS V2). The bpMRI (T2-weighted imaging [T2WI], diffusion-weighted imaging [DWI]/apparent diffusion coefficient [ADC]) and mpMRI (T2WI, DWI/ADC and DCE) scores were recorded to plot the receiver operating characteristic (ROC) curves. The area under the curve (AUC), accuracy, sensitivity, specificity, negative predictive value (NPV), and positive predictive value (PPV) for each method were calculated and compared. The patients were further stratified according to bpMRI scores (bpMRI ≥3, and bpMRI = 3, 4, 5) to analyse the difference in DCE MRI between PCa and non-PCa lesions (as well as between csPCa and non-csPCa). The AUC values for the bpMRI and mpMRI protocols for PCa were comparable (0.790 [0.732-0.840] and 0.791 [0.733-0.841], respectively). The accuracy, sensitivity, specificity, PPV and NPV of bpMRI for PCa were 76.2, 79.5, 72.6, 75.8, and 76.6%, respectively, and the values for mpMRI were 77.4, 84.4, 69.9, 75.2, and 80.6%, respectively. The AUC values for the bpMRI and mpMRI protocols for the diagnosis of csPCa were similar (0.781 [0.722-0.832] and 0.779 [0.721-0.831], respectively). The accuracy, sensitivity, specificity, PPV and NPV of bpMRI for csPCa were 74.0, 83.8, 66.9, 64.8, and 85.0%, respectively; and 73.6, 87.9, 63.2, 63.2, and 87.8%, respectively, for mpMRI. For patients with bpMRI scores ≥3, positive DCE results were more common in PCa and csPCa lesions (both P = 0.001). Further stratification analysis showed that for patients with a bpMRI score = 4, PCa and csPCa lesions were more likely to have positive DCE results (P = 0.003 and P < 0.001, respectively). The diagnostic accuracy of bpMRI is comparable with that of mpMRI in the detection of PCa and the identification of csPCa. DCE MRI is helpful in further identifying PCa and csPCa lesions in patients with bpMRI ≥3, especially bpMRI = 4, which may be conducive to achieving a more accurate PCa risk stratification. Rather than omitting DCE, we think further comprehensive studies are required for prostate MRI.
doi:10.1186/s40644-019-0274-9 pmid:31864408 pmcid:PMC6925429 fatcat:phins2qkhfbxtedguybo62xlpm

Characterization and manipulation of mixed phase domains in highly-strained BiFeO3 thin films [article]

Lu You, Zuhuang Chen, Xi Zou, Hui Ding, Weigang Chen, Lang Chen, Guoliang Yuan, Junling Wang
2012 arXiv   pre-print
The novel strain-driven morphotropic phase boundary (MPB) in highly-strained BiFeO3 thin film is featured by ordered mixed phase nanodomains (MPNs). Through scanning probe microscopy and synchrotron X-ray diffraction, eight structural variants of the MPNs are identified. Detailed polarization configurations within the MPNs are resolved using angular-dependent piezoelectric force microscopy. Guided by the obtained results, deterministic manipulation of the MPNs has been demonstrated by
more » ... g the motion of the local probe. These findings are important for in-depth understanding of the ultrahigh electromechanical response arising from phase transformation between competing phases, enabling future explorations on the electronic structure, magnetoelectricity and other functionalities in this new MPB system.
arXiv:1112.6305v2 fatcat:xkm447d56vg2paepbagovdpoga

Redox-active benzimidazolium sulfonamides as cationic thiolating reagent for reductive cross-coupling of organic halides

Weigang Zhang, Mengjun Huang, Zhenlei Zou, Zheng-Guang Wu, Shengyang Ni, Lingyu Kong, You-Xuan Zheng, Yi Wang, Yi Pan
2021 Chemical Science  
Redox-active benzimidazolium sulfonamides as thiolating reagents have been developed for reductive C-S bond coupling. The IMDN-SO2R reagent provides a bench-stable cationic precursor to generate a portfolio of highly active N-S...
doi:10.1039/d0sc06446g pmid:34164018 pmcid:PMC8179258 fatcat:7de7aiqxajberegsypj6vsmgsu

Domain tuning in mixed-phase BiFeO3 thin films using vicinal substrates

Lu You, Shintaro Yasui, Yoshitaka Ehara, Xi Zou, Hui Ding, Zuhuang Chen, Weigang Chen, Lang Chen, Hiroshi Funakubo, Junling Wang
2012 Applied Physics Letters  
The structural and ferroelectric domain variants of highly-strained BiFeO3 films grown on vicinal LaSrAlO4 substrates were studied by piezoelectric force microscopy and high-resolution X-ray reciprocal space mapping. Through symmetry breaking of the substrate surface, ferroelastic domain variants in the highly-strained MC phase BiFeO3 can be greatly reduced. Single-domain film can be obtained on substrates with large miscut angle, which is accompanied by the reduction of structural variants in
more » ... he mixed-phase nanodomains. These findings lead to better understanding of the phase evolution and polarization rotation process in the strain-driven morphotropic phase system.
doi:10.1063/1.4717986 fatcat:hmufxzjxojcx5foufmv6seu2xu

Natural Killer Cells Offer Differential Protection From Leukemia in Chinese Southern Han

Zhihui Deng, Jun Zhao, Siqi Cai, Ying Qi, Qiong Yu, Maureen P. Martin, Xiaojiang Gao, Rui Chen, Jiacai Zhuo, Jianxin Zhen, Mingjie Zhang, Guobin Zhang (+7 others)
2019 Frontiers in Immunology  
Copyright © 2019 Deng, Zhao, Cai, Qi, Yu, Martin, Gao, Chen, Zhuo, Zhen, Zhang, Zhang, He, Zou, Lu, Zhu, Hong, Carrington and Norman.  ... 
doi:10.3389/fimmu.2019.01646 pmid:31379844 pmcid:PMC6646668 fatcat:zetask5eozctxitwzknbhaeutu

Free posterior tibial artery perforator flap for 2‐stage tracheal reconstruction in patients after resection of well‐differentiated thyroid carcinoma invading the trachea

Jun Liu, Dan Lu, Di Deng, Ji Wang, Weigang Gan, Jian Zou, Fei Chen, Hui Yang
2019 Head and Neck  
The present study was conducted to explore the efficacy of using a free posterior tibial artery perforator flap (FPTAPF) for trachea reconstruction after resection of well-differentiated thyroid carcinoma (WDTC) invading the trachea.
doi:10.1002/hed.25675 pmid:30729609 pmcid:PMC6618072 fatcat:huhkmrtymrdjvjenavlqfuubgq

Multiple organ infection and the pathogenesis of SARS

Jiang Gu, Encong Gong, Bo Zhang, Jie Zheng, Zifen Gao, Yanfeng Zhong, Wanzhong Zou, Jun Zhan, Shenglan Wang, Zhigang Xie, Hui Zhuang, Bingquan Wu (+11 others)
2005 Journal of Experimental Medicine  
After Ͼ 8,000 infections and Ͼ 700 deaths worldwide, the pathogenesis of the new infectious disease, severe acute respiratory syndrome (SARS), remains poorly understood. We investigated 18 autopsies of patients who had suspected SARS; 8 cases were confirmed as SARS. We evaluated white blood cells from 22 confirmed SARS patients at various stages of the disease. T lymphocyte counts in 65 confirmed and 35 misdiagnosed SARS cases also were analyzed retrospectively. SARS viral particles and genomic
more » ... sequence were detected in a large number of circulating lymphocytes, monocytes, and lymphoid tissues, as well as in the epithelial cells of the respiratory tract, the mucosa of the intestine, the epithelium of the renal distal tubules, the neurons of the brain, and macrophages in different organs. SARS virus seemed to be capable of infecting multiple cell types in several organs; immune cells and pulmonary epithelium were identified as the main sites of injury. A comprehensive theory of pathogenesis is proposed for SARS with immune and lung damage as key features.
doi:10.1084/jem.20050828 pmid:16043521 pmcid:PMC2213088 fatcat:nvop42jp45fbtdvh55wmazxxwq
« Previous Showing results 1 — 15 out of 51 results