2,266 Hits in 2.9 sec

Crystal structure of Senecavirus A 3C protease [article]

Kaiwen Meng, Lijie Zhang, Geng Meng
2020 bioRxiv   pre-print
Senecavirus A (SVA), an emerging picornavirus in porcine population, could infect porcines of all age group and cause FMD-like symptoms. Picornaviridae, a group of RNA viruses do harm to both human and stocks; however, most of picornaviruses are lack of effective vaccines and drugs. Picornaviral 3C protease (3Cpro), as an important role in virus maturation, they basically take charge of poly-protein cleavaging, RNA replication, and multiple interventions on host cells. In this study, we
more » ... ully solved the crystal structure of 3Cpro at 1.9 astron resolution. The results showed several differences of the binding groove within picornaviral 3Cpro, and prompted that the accommodate ability of the pocket may associate with the cleavage efficiency. The further research on 3Cpro cleavage efficiency based on structural biology, will prospectively provide an instruction on designing of efficient 3Cpro for universally proteolysis in picornaviral VLP production.
doi:10.1101/2020.02.21.959106 fatcat:pfyitf55qzamnhdojtu45wekvy

Synthesis of 1,2,6-Trisubstituted Benzimidazoles

Kang Yang, Huiwen Gu, Fang Zhang, Xiaojuan Xu, Lijie Zhang, Yaquan Sun
2018 Youji huaxue  
[18] 、 Kanhed [19] 和 Zhang [20] 的方法, 以 3-氟-4-硝基苄 腈和苄胺为原料合成 1a 为例, 结果见表 1. 从表 1 可以看出, 加入 K 2 CO 3 后, 反应时间缩短, 反应温度降低, 收率提高. 原因在于 K 2 CO 3 在反应中既 是碱, 催化反应进行, 还可以吸收反应生成的 HF, 促进 反应向正反应方向进行 [20] .  ... 
doi:10.6023/cjoc201802027 fatcat:wcghrdzlv5caxdicnqmem5joe4

Genetic Electromagnetism-Like Mechanism Based Power System Optimization Research

Lijie Zhang, Li Zhu, Yanhui Zhang
2017 Chemical Engineering Transactions  
According to the analysis of theory about hydrothermal power system energysaving (Zhang et al., 2013) , in order to bring complementary operation of hydrothermal power system into full play (El-Hana  ... 
doi:10.3303/cet1762186 doaj:5e2cf4937bf04e7da3d39231d409e10c fatcat:itb4yqouxvby7kdkl6afb2kdia

Two new taraxerane-type triterpenes from Ledum palustre L

Kuo Zhang, Jianfei Wang, Lijie Chen, Jun Li, Zhichun Shi, Shujun Zhang, Ming Zhao
2019 Figshare  
Two new compounds, namely 6α-hydroxy-14-taraxerene-3,16,21-trione and 6α,26-dihydroxy-14-taraxerene-3,16,21-trione were isolated from the Ledum palustre L. Their chemical structures were confirmed after a combined analysis of IR, HR-ESI-TOFMS, 1D-NMR, and 2D-NMR. The compounds were evaluated for cell growth inhibitory activity against two cancer cell lines.
doi:10.6084/m9.figshare.7929737 fatcat:wlr6hbm6vbd6lam5oaw7b5zme4

A peptide derived from apoptin inhibits glioma growth

Liqiu Zhang, Hengyu Zhao, Zhongqi Cui, Yueshan Lv, Wenjia Zhang, Xiaoyu Ma, Jianan Zhang, Banghao Sun, Danyang Zhou, Lijie Yuan
2017 OncoTarget  
Glioblastoma (GBM) is associated with poor prognosis due to its resistance to surgery, irradiation, and conventional chemotherapy. Thus, efficient therapeutic approaches for the treatment of GBM are urgently needed. HSP70 is an antiapoptotic protein that participates in the inhibition of both mitochondrial and membrane receptor apoptosis pathways and is highly expressed in glioma tissues. Here, we investigated a derivative of apoptin; specifically, a chicken anemia viral protein with selective
more » ... oxicity toward cancer cells that can inhibit hyperactive molecules, including HSP70. Our earlier studies demonstrated that apoptin directly binds to the promoter of HSP70 and inhibits HSP70 transcription, which contributes to HSP70 downregulation. This study provides the first demonstration of the therapeutic potential of an apoptin- derived peptide for the treatment of GBM by identifying the minimal region of the apoptin domain required for interaction with the heat-shock element (HSE). This apoptin-derived peptide (ADP) inhibits glioma cell proliferation and tumor growth as well as exhibits an increased ability to promote apoptosis in GBM cells compared with rapamycin and temozolomide. ADP treatment inhibited xenograft tumor growth and increased the overall health and survival of nude mice implanted with GBM cells. These effects were measured in tumors obtained from cell lines and were observed in both intracranial and subcutaneous xenografts. In conclusion, we provide the first demonstration that ADP has therapeutic potential for the treatment of human GBM. Specifically, this study suggests that ADP is a potent candidate for drug development based on its favorable toxicity and pharmacokinetic profiles as well as its time-and cost-saving benefits.
doi:10.18632/oncotarget.16094 pmid:28415709 pmcid:PMC5458194 fatcat:yvsczwwjxzfohglfpgxzfcxbva

Edge Anonymity in Social Network Graphs

Lijie Zhang, Weining Zhang
2009 2009 International Conference on Computational Science and Engineering  
Edges in social network graphs can model sensitive relationships. In this paper, we consider the problem of edges anonymity in graphs. We propose a probabilistic notion of edge anonymity, called graph confidence, which is general enough to capture the privacy breach made by an adversary who is able to pinpoint target persons in a graph partition based on any given set of topological features of vertexes. We then focus on a special type of edge anonymity problem which uses vertex degree to
more » ... ion a graph. We analyze edge disclosure in real-world social networks and show that even if graphs are anonymized to prevent vertex disclosure, they still do not guarantee edge anonymity. We present three heuristic algorithms that protect edge anonymity using edge swap or edge deletion. Our experimental results, based on three real-world social networks and several utility measures, show that these algorithms can effectively protect edge anonymity and obtain anonymous graphs of acceptable utility.
doi:10.1109/cse.2009.310 dblp:conf/cse/ZhangZ09 fatcat:bgf6ayn6angi7jojdufpu2kovu

C-V characteristics of piezotronic metal-insulator-semiconductor transistor

Jiayang Zheng, Yongli Zhou, Yaming Zhang, Lijie Li, Yan Zhang
2019 Science Bulletin  
Jiayang Zheng, Yongli Zhou, Yaming Zhang, and Yan Zhang fabricated theoretic frame and analysed the data.  ...  Author contributions Jiayang Zheng, Yongli Zhou, and Yaming Zhang contributed equally to this work. Yan Zhang conceived the idea and guided this work.  ...  Zhou, Yaming Zhang, Lijie Li, and Yan Zhang wrote this paper. All the authors discussed the results and commented on the manuscript.  ... 
doi:10.1016/j.scib.2019.11.001 fatcat:mg6kaeviefhq7pz62b7otnmmye

Sildenafil (Viagra) Induces Neurogenesis and Promotes Functional Recovery After Stroke in Rats

Ruilan Zhang, Ying Wang, Li Zhang, Zhenggang Zhang, Wayne Tsang, Mei Lu, Lijie Zhang, Michael Chopp
2002 Stroke  
Zhang et al Sildenafil Use After Stroke Effects of Sildenafil on Immature Neurons Administration of sildenafil robustly increased number of TuJ1immunoreactive cells in the ipsilateral subventricular  ... 
doi:10.1161/01.str.0000034399.95249.59 pmid:12411660 fatcat:xow3pxp37jfk7fqakgu24do4rq

Two new species of Apophylia from China (Coleoptera: Chrysomelidae: Galerucinae)

Jan Bezděk, Lijie Zhang
2006 Zenodo  
Bezděk, Jan, Zhang, Lijie (2006): Two new species of Apophylia from China (Coleoptera: Chrysomelidae: Galerucinae). Acta Entomologica Musei Nationalis Pragae 46: 145-150  ...  ., / det.Bezděk & Zhang 2006'.  ... 
doi:10.5281/zenodo.5325365 fatcat:5sak5khldjfe3lwrwgbfinavku

In-Plane Anisotropic Thermal Conductivity of Low-Symmetry PdSe2

Lijie Chen, Weitao Zhang, Hanlin Zhang, Jiawang Chen, Chaoyang Tan, Shiqi Yin, Gang Li, Yu Zhang, Penglai Gong, Liang Li
2021 Sustainability  
Low-symmetry two-dimensional (2D) materials have exhibited novel anisotropic properties in optics, electronics, and mechanics. Such characteristics have opened up new avenues for fundamental research on nano-electronic devices. In-plane thermal conductivity plays a pivotal role in the electronic performance of devices. This article reports a systematic study of the in-plane anisotropic thermal conductivity of PdSe2 with a pentagonal, low-symmetry structure. An in-plane anisotropic ratio up to
more » ... 42 was observed by the micro-Raman thermometry method. In the Raman scattering spectrum, we extracted a frequency shift from the mode with the most sensitivity to temperature. The anisotropic thermal conductivity was deduced by analyzing the heat diffusion equations of suspended PdSe2 films. With the increase in thickness, the anisotropy ratio decreased gradually because the thermal conductivity in the x-direction increased faster than in the y-direction. The anisotropic thermal conductivity provides thermal management strategies for the next generation of nano-electronic devices based on PdSe2.
doi:10.3390/su13084155 fatcat:arm5adll7jhftajg4gp4edvcfa

Molecular dynamic simulations on TKX-50/HMX cocrystal

Shuling Xiong, Shusen Chen, Shaohua Jin, Zhe Zhang, Yan Zhang, Lijie Li
2017 RSC Advances  
TKX-50/HMX cocrystal model was established and calculated using PCFF force field by molecular dynamics simulations.
doi:10.1039/c6ra26146a fatcat:dxlcqehjqzfbdnlv2kny3zuyby

Piezotronic spin and valley transistors based on monolayer MoS2

Ruhao Liu, Gongwei Hu, Minjiang Dan, Yaming Zhang, Lijie Li, Yan Zhang
2020 Nano Energy  
Piezotronics and piezo-phototronics based on the third generation semiconductors are two novel fields for low power consumption, self-powered technology and internet of things. Strain-induced piezoelectric field plays a key role to modulate not only charge-carrier transport but also quantum transport properties in piezoelectric semiconductors, especially for two-dimensional materials which can withstand large strain. In this paper, we theoretically study piezotronic effect on the modulation of
more » ... pin and valley properties in single-layered MoS 2 . Spin-and valley-dependent conductance, electronic density distribution and polarization ratio are investigated by quantum transport calculation. Because of piezotronic effect, strain-gated spin and valley transistors have excellent quantum state selectivity using by strain. Our work provides not only piezotronic effect on spin and valley quantum states, but also a guidance for designing novel quantum piezotronic devices. 2
doi:10.1016/j.nanoen.2020.104678 fatcat:heeeqihtabe6hoiip3rgdulgum

Strength Model of Backfill-Rock Irregular Interface Based on Fractal Theory

Yue Zhang, Zhihong Zhang, Lijie Guo, Xiuli Du
2021 Frontiers in Materials  
Frontiers in Materials | December 2021 | Volume 8 | Article 792014 Zhang et al.Backfill-Rock Interface Strength Model  ... 
doi:10.3389/fmats.2021.792014 fatcat:l2vcqlr3mfhhxjjdchz2eonoeq

Piezophototronic effect enhanced luminescence of zinc oxide nanowires

Yan Zhang, Lijie Li
2016 Nano Energy  
Cite this article as: Yan Zhang and Lijie Li, Piezophototronic effect enhanced luminescence of zinc oxide nanowires, Nano Energy, http://dx.  ... 
doi:10.1016/j.nanoen.2016.02.039 fatcat:dzuc36nmwrh3bjbdewr7x5wocm

Intriguing hybrid nanotubes with tunable structures

Li Li, Lijie Zhang, Jing Ren, Hui Zhang, Xuemei Sun, Houpu Li, Tao Chen, Huisheng Peng
2011 Chemical Physics Letters  
Novel hybrid nanomaterials with iron oxide nanoparticles incorporated in nitrogen-doped carbon nanotube have been synthesized with tunable structures by a ready chemical vapor deposition process. These hybrid nanotubes show promising electronic applications.
doi:10.1016/j.cplett.2011.09.077 fatcat:wuoni675ljhbtc66rr2jhukjlq
« Previous Showing results 1 — 15 out of 2,266 results