128 Works

Matrix Factor Analysis: From Least Squares to Iterative Projection

Yong He, Xinbing Kong, Long Yu, Xinsheng Zhang & Changwei Zhao
In this article, we study large-dimensional matrix factor models and estimate the factor loading matrices and factor score matrix by minimizing square loss function. Interestingly, the resultant estimators coincide with the Projected Estimators (PE) in Yu et al. which was proposed from the perspective of simultaneous reduction of the dimensionality and the magnitudes of the idiosyncratic error matrix. In other word, we provide a least-square interpretation of the PE for the matrix factor model, which...

Synthesis of N-doped carbon dots for highly selective and sensitive detection of Metronidazole in real samples and its cytotoxicity studies

Xiaoxiang Wang, Tao Lin, Wei Wu, Haisuo Wu & Dongdong Yan
The current investigation reports the synthesis of N-CDs using glucosamine, ascorbic acid, and ethylenediamine precursors by a simple hydrothermal technique. The formation of N-CDs was proved by various characterization techniques such as X-ray Photoelectron Spectroscopy (XPS), X-ray Diffraction (XRD), Transmission Electron Microscopy (TEM), and Fourier-Transform Infrared Spectrophotometer (FT-IR). The optical properties were investigated by fluorescence and UV-vis spectrophotometer. Also, N-CDs showed high selectivity in detecting the MTZ compared to several other analytes. However, the metronidazole...

Corticosteroid prevents COVID-19 progression within its therapeutic window: a multicenter, proof-of-concept, observational study.

Yang Li, Xian Zhou, Tao Li, Shiji Chan, Yiqi Yu, Jing-Wen Ai, Haocheng Zhang, Feng Sun, Qiran Zhang, Lei Zhu, Lingyun Shao, Bin Xu & Wenhong Zhang
Background: Critically ill patients with COVID-19 are of grave concern. Those patients usually underwent a stage of excessive inflammation before developing acute respiratory distress syndrome. In this study, we test the hypothesis that short-term, low-to-moderate-dose corticosteroids would benefit patients when used in the early phase of excessive inflammation namely, the therapeutic window. Methods: Among a Shanghai cohort and a validation cohort, we enrolled COVID-19 patients showing marked radiographic progression. Short-term, low-to-moderate-dose corticosteroids were considered for...

Efficacy and safety of an innovative short-course regimen containing clofazimine for treatment of drug-susceptible tuberculosis: a clinical trial

Xubin Zheng, Xuwei Gui, Lan Yao, Jun Ma, Yifan He, Hai Lou, Jin Gu, Ruoyan Ying, Liping Chen, Qin Sun, Yidian Liu, Chih-Ming Ho, Bai-Yu Lee, Daniel L. Clemens, Marcus A. Horwitz, Xianting Ding, Xiaohui Hao, Hua Yang & Wei Sha
In preclinical studies, a new short-course antituberculosis drug regimen markedly reduced the time required to achieve relapse-free cure. This study aimed to preliminarily evaluate the efficacy and safety of this four-month regimen, consisting of clofazimine, prothionamide, pyrazinamide and ethambutol, with a standard six-month regimen in patients with drug-susceptible tuberculosis. An open-label pilot randomized clinical trial was conducted to enrol the patients with newly diagnosed bacteriologically-confirmed pulmonary tuberculosis. The primary efficacy end-point was sputum culture negative...

Supplementary Table.doc

Bingyan Cao, Meijuan Liu, Yingxian Zhang, JiaJia Chen, Xiaoqiao Li, Chang Su, Wei Yang, Min Liu, Di Wu, Wenjing Li, Xuejun Liang, Qiao Wang, Haiyan Wei & Chunxiu Gong
Supplementary Table 1 Positive rate of different MODY screening criteria Supplementary Table 2 The clinical and genetic characteristics of MODY in two cohorts (gray lines represent the cohort 2)

Genetic, biological and epidemiological study on a cluster of H9N2 avian influenza virus infections among chickens, a pet cat, and humans at a backyard farm in Guangxi, China

Jing Yang, Jianhua Yan, Cheng Zhang, Shanqin Li, Manhua Yuan, Chunge Zhang, Chenguang Shen, Yang Yang, Lifeng Fu, Guanlong Xu, Weifeng Shi, Zhenghai Ma, Ting Rong Luo & Yuhai Bi
During an investigation in October 2018, two people with diarrhoea, mild abdominal pain, and mild arthralgia symptoms in Guangxi, China, were identified as infected by H9N2 avian influenza virus (AIV). Four H9N2 AIVs were isolated from one of two patients, a pet cat, and a dead chicken (two respective isolates from its lung and kidney tissues) bred by the patients at a backyard farm. Epidemiological investigation indicated that the newly bought chicken died first, and...

Identification of mite-specific eosinophils in the colon of patients with ulcerative colitis

Shu-Wang Peng, Jiang-Ming Sheng, Bai-Sui Feng, Ke-Ping Peng, Gui-Xiang Tian, Cheng-Bai Liang, Ming-Hui Liu, Hai-Qing Xie, Qing Shu, Yan Li & Ping-Chang Yang
The pathogenesis of ulcerative colitis (UC) is unclear. House dust mite (HDM) is associated with immune inflammation in the body. This study is designed to identify the association between HDM and UC clinical symptoms. UC patients (n = 86) and non-UC control (NC) subjects (n = 64) were recruited. Colon lavage fluids (CLF) were collected from HDM skin prick test positive patients during colonoscopy, and analyzed by immunological approaches. HDM was detected in fecal samples,...

Generation of self-replicating airway organoids from the cave nectar bat Eonycteris spelaea as a model system for studying host-pathogen interactions in the bat airway epithelium

Louisa L.Y. Chan, Akshamal M. Gamage, Chee Wah Tan, Kai Sen Tan, Jing Liu, Douglas Jie Wen Tay, Randy Jee Hiang Foo, Laurent Rénia, De Yun Wang & Lin-Fa Wang
Bats are reservoir hosts for various zoonotic viruses with pandemic potential in humans and livestock. In vitro systems for studying bat host-pathogen interactions are of significant interest. Here, we establish protocols to generate bat airway organoids (AOs) and airway epithelial cells differentiated at the air-liquid interface (ALI-AECs) from tracheal tissues of the cave-nectar bat Eonycteris spelaea. In particular, we describe steps which enable laboratories that do not have access to live bats to perform extended...

Convective heat transfer coefficient of steel member in localized fire condition

Jinggang Zhou, Xuanyi Zhou, Beihua Cong & Wei Wang
At present, values adopted from specifications are mostly used to define the convective heat transfer coefficient ch in localized fire researches. In this paper, the specific scenario of the steel column surrounded by fire plume is selected as a typical case to explore the surface ch change rules of the steel column. This paper conducts a two-way coupling simulation analysis of the fire and the thermal models by means of CFD codes. First, the validity...

Comparisons on fluid-solid heat transfer simulation for localized fire resistance

Xuanyi Zhou, Jinggang Zhou, Beihua Cong & Wei Wang
A research idea of multi-physics field coupling can be used to solve the structural fire resistance problem. Most of the previous CFD-FEM numerical simulations in structural fire resistance studies apply adiabatic surface temperature (AST) to accurately describe the complex fire analysis boundary conditions, and this methodology belongs to the use of iterative coupling methods to achieve fluid-solid heat transfer coupling. However, there is less application for another direct two-way coupling method. In this paper, a...

Treatment decision based on unilateral index from non-ACTH stimulated and ACTH stimulated adrenal vein sampling in primary aldosteronism-Supplemental materials

Xizi Zhang, Xiaoyu Shu, Jun Yang, Qingfeng Cheng, Zhipeng Du, Ying Song, Yi Yang, Jinbo Hu, Jian Long, Feifei Wu, Qifu Li & Shumin Yang
The supplemental data of the manuscript: Treatment decision based on unilateral index from non-ACTH stimulated and ACTH stimulated adrenal vein sampling inprimary aldosteronism

Latent Space Model for Higher-order Networks and Generalized Tensor Decomposition

Zhongyuan Lyu, Dong Xia & Yuan Zhang
We introduce a unified framework, formulated as general latent space models, to study complex higher-order network interactions among multiple entities. Our framework covers several popular models in recent network analysis literature, including mixture multi-layer latent space model and hypergraph latent space model. We formulate the relationship between the latent positions and the observed data via a generalized multilinear kernel as the link function. While our model enjoys decent generality, its maximum likelihood parameter estimation is...

A numerical simulation method for temperature fields of travelling fire based on ANSYS or Abaqus

Xinna Wei & Suwen Chen
In concern of Travelling Fire in a large compartment, normally two temperature fields are classified, which are a near field in the flame region with high temperature and a far field in the rest region with smoke temperature [1]. In 2011, Travelling Fire Methodology (TFM) [1] was proposed, which combines Alpert’s ceiling jet correlation, to account for the far field smoke temperature and a uniform temperature zone for the near field. Improved Travelling Fires Methodology...

Cadomian crust of Eastern Iran: evidence from the Tapeh Tagh granitic gneisses

Habib Mollai, Rahim Dabiri, Habib Allah Torshizian, Georgia Pe-Piper & Wei Wang
Late Neoproterozoic to Early Cambrian (Cadomian) magmatic rocks are abundant in Iran, but their occurrence in east-central Iran is voluminous. This paper reports, for the first time, on the Cadomian rocks of the eastern Iranian region known as Tapeh Tagh and deals with their geochemistry and uranium-lead (U-Pb) zircon ages. The Tapeh Tagh region contains masses of Cadomian meta-igneous rocks (including various types of granitic gneiss) and overlying meta-sedimentary rocks. The granitic gneisses show tectonic...

Exposure to di (2-ethylhexyl) phthalate causes locomotor increase and anxiety-like behavior via induction of oxidative stress in brain

Shixin Tang, Hongyang Zhang, Yinyin Xia, Shiyue Luo, Yijun Liu, Xinhao Duan, Zhen Zou, Chengzhi Chen, Lixiao Zhou & Jingfu Qiu
Di (2-ethylhexyl) phthalate (DEHP) is the most prevalent exposure scenario in the daily life. A growing number of significant studies showed that DEHP could exhibit long-term adverse health effects for the human body, particularly in the liver, kidneys, heart and reproductive systems. However, the impact of oral intake of DEHP on nervous system is extremely limited. In the present study, the adult C57BL/6J male mice were intragastric administered with two dosages DEHP for 35 days....

Managing retrial queueing systems with boundedly rational customers

Yu Zhang & Jinting Wang
Bounded rationality includes potential cognitive deficits that limit human rational behaviour. In this paper, we allow for estimation errors of their utility and consider bounded rationality in queueing models with retrials. Upon arrival, customers decide whether to join the system based on their perceived utility, and their choice behaviour is characterised by a logit choice model. For a revenue-seeking server and a social planner, we investigate corresponding optimal pricing strategies. We find that the revenue-optimal...

mRNA based vaccines provide broad protection against different SARS-CoV-2 variants of concern

Haomeng Wang, Zhao Chen, Zhenghua Wang, Jin Li, Zhihong Yan, Jinbo Yuan, Airu Zhu, Lan Chen, Ye Liu, Chenlong Hu, Ali Zhu, Guowei Li, Yuehu Li, Jie Deng, Liqiao Ma, Xiuwen Sui, Wei Miao, Junqiang Li, Xiuyu Zheng, Jinhua Piao, Yanfeng Yao, Juhong Rao, Chao Shan, Zhiming Yuan, Jincun Zhao … & Tao Zhu
In order to overcome the pandemic of COVID-19, messenger RNA (mRNA)-based vaccine has been extensively researched as a rapid and versatile strategy. Herein, we described the immunogenicity of mRNA-based vaccines for Beta and the most recent Omicron variants. The homologous mRNA-Beta and mRNA-Omicron and heterologous Ad5-nCoV plus mRNA vaccine exhibited high level cross-reactive neutralization for Beta, original, Delta and Omicron variants. It indicated that the COVID-19 mRNA vaccines have great potential in the clinical use...

Transcriptomic analysis of the innate immune signatures of SARS-CoV-2 protein subunit vaccine ZF2001 and a mRNA vaccine RRV

Qian Wang, Ziyang Song, Jinghuan Yang, Qian He, Qunying Mao, Yu Bai, Jianyang Liu, Chaoqiang An, Xujia Yan, Bopei Cui, Lifang Song, Dong Liu, Miao Xu & Zhenglun Liang
Analysis of large-scale gene expression post vaccination can provide an overview of immune responses. We used transcriptional approaches to comprehensively analyze the innate immune response signatures elicited by protein subunit (PS) vaccine ZF2001 and a mRNA vaccine named RRV. A fine-grained time-dependent dissection of large-scale gene expression post immunization revealed that ZF001 induced MHC class II-related genes, including cd74 and H2-Aa, more expeditiously than RRV. Notably, RRV induced MHC class I-related genes like Tap1/2, B2m...

A luminescent heterometallic Tb–Al ion-pair complex with a cubic (H2O)8-octamer

Xiao-Qing Zhao & Jing Zhou
A heteronuclear Tb-Al complex (1) was obtained by pyridine-2,6-dicarboxylic acid (H2PDA), AlCl3 and Tb4O7 under hydrothermal condition. Single-crystal X-ray diffraction analysis reveals that 1 is an ion-pair and consists of [Al(H2O)6]3+ cation and [Tb(PDA)3]3- anion; the [Al(H2O)6]3+ cations and [Tb(PDA)3]3- anions are further connected by hydrogen bonds to construct a 3D NaCl-like topology. Lattice water molecules in 1 fabricate a cubic (H2O)8-octamer by hydrogen bonds, which is located in the void of 1. Luminescent property...

Genome-wide DNA methylation and transcriptome analyses reveal important epigenetic genes associated with Valgus-varus deformity in broilers

Yanchao Ma, Chunxia Cai, Jianzeng Li, Lujie Zhang, Jiali Ma, Ruirui Jiang, Yanhua Zhang, Yadong Tian, Xiangtao Kang & Ruili Han
1. Valgus-varus deformity (VVD) is a common leg bone problem in broilers that causes serious economic losses to the breeding industry. The genetic etiology of VVD is not clear, which restricts the genetic control of VVD. 2. In this study, knee cartilage of 35-day-old VVD and normal broilers was sequenced by whole-genome bisulphite sequencing (WGBS). The unique whole-genome DNA methylation profile of VVD broilers was described, and the methylation data and transcription data were used...

Effects of temperature, pH, and salinity on the growth kinetics of Pseudomonas sp. NB-1, a newly isolated cold-tolerant, alkali-resistant, and high-efficiency nitrobenzene-degrading bacterium

Tingchen Cui, Peng Wang, Jialu Li, YaoMing Su, Na Liu & Mei Hong
Strain NB-1, which can efficiently degrade nitrobenzene, was identified as Pseudomonas frederiksbergensis. NB-1 was resistant to cold and alkali with the widest temperature (4°C–35°C) and pH (5–11) adaptive range, compared with other reported nitrobenzene-degrading microorganisms. Based on the Haldane-Andrews model, the real maximum specific growth rate μm’, specific affinity aA, and inhibition coefficient Ki were used in response surface methodology (RSM) simultaneously for the first time to guide NB-1 to treat nitrobenzene wastewater. According to...

Mapping active paddy rice area over monsoon Asia using time-series Sentinel – 2 images in Google Earth Engine; A case study over Lower Gangetic Plain

Arabinda Maiti, Prasenjit Acharya, Srikanta Sannigrahi, Qi Zhang, Somnath Bar, Suman Chakraborti, Bijoy K Gayen, Gunadhar Barik, Surajit Ghosh & Milap Punia
We proposed a modification of the existing approach for mapping active paddy rice fields in monsoon-dominated areas. In the existing PPPM approach, LSWI higher than EVI at the transplantation stage enables the identification of rice fields. However, it fails to recognize the fields submerged later due to monsoon floods. In the proposed approach (IPPPM), the submerged fields, at the maximum greenness time, were excluded for better estimation. Sentinel–2A/2B time-series images were used for the year...

Comparison of the accelerating effect of graphene oxide and graphene on anaerobic transformation of bisphenol F by Pseudomonas sp. LS

Hong Lu, Jingyi Li, Ze Fu, Xiaolei Wang, Jiti Zhou & Jing Wang
It was found that bisphenol F (BPF) could be anaerobically transformed to 4,4-dihydroxybenzophenone using nitrate as an electron acceptor by Pseudomonas sp. LS. However, BPF removal was a slow process under anaerobic conditions. In the present study, effects of graphene oxide (GO) and graphene on the anaerobic transformation of BPF were studied in detail. Results showed that GO (2-10 mg/L) and graphene (2-20 mg/L) could increase anaerobic biotransformation rate of BPF. For GO-mediated system, GO...

Nickel (ii) effects on Anammox reaction: reactor performance, dehydrogenase, sludge morphology and microbial community changes

Jian Cheng, Liang Qiao, Wen Xu, Yulan Qian, Yiyang Ge, Ting Xia & Yan Li
Nickel (ii) (Ni2+) is considered as one of the necessary trace elements in the process of Anammox culture, but it may have toxic effects at high concentration. This study explored the long-term influence of Ni2+ on the denitrification efficiency of Anammox bioreactors. The results showed that when the concentration of Ni2+ was 0.5 mg/L, the bioreactor had the highest denitrification efficiency, while the removal efficiency of ammonia nitrogen and nitrite nitrogen gradually decreased at concentrations...

Structural basis of HCoV-19 fusion core and an effective inhibition peptide against virus entry

Huan Sun, Yan Li, Peipei Liu, Chengpeng Qiao, Xiaomin Wang, Lianao Wu, Kefang Liu, Yu Hu, Chao Su, Shuguang Tan, Shumei Zou, Guizhen Wu, Jinghua Yan, George Fu Gao, Jianxun Qi & Qihui Wang
Structural basis of HCoV-19 fusion core and an effective inhibition peptide against virus entry

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  • Sun Yat-sen University
  • Zhejiang University
  • Chinese Academy of Medical Sciences & Peking Union Medical College
  • Fudan University
  • Sichuan University
  • Shanghai Jiao Tong University
  • Capital Medical University
  • Huazhong University of Science and Technology
  • University of Chinese Academy of Sciences
  • Shandong University