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您的检索式：作者名="Xingju Liu"
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| 1 | Digital subtraction angiographic characteristics of progression of moyamoya disease 6 months prior to surgical revascularisation显示文摘background Evidence on the natural angiographic course of moyamoya disease(MMD)is lacking.It takes about 6 months for waiting for revascularisation surgery.The issue of when to perform subtraction angiography(DSA)for follow-up remains unclear.We investigated the natural course of MMD by DSA and attempted to determine the best interval to perform the follow-up DSA.Methods This is a single-centre cohort study of Chinese MMD inpatients treated from 1 January 2015 to 31 August 2019.Their angiographic findings were evaluated on Suzuki stage and collateral circulation between two follow-ups of the same hemisphere.results A total of 110 patients who met the criteria were enrolled in this study.After a median 6 months follow-up,five patients(4.5%)had progression,four females and one male.Time interval of progression ranged from 4 to 137 months with a mean of 61.4 months.Of five patients with progression,four had unilateral lesion(two ipsilateral and two contralateral)and one had bilateral lesions.Collateral circulation was changed in three of five patients.Conclusions The angiographic evidence of progression in MMD was rare in the short-term follow-up,and most patients with progression had initial unilateral involvement.DSA re-examination may be not needed in patients with bilateral MMD,but needed in unilateral MMD. | Peicong Ge Qian Zhang Xun Ye Xingju Liu Xiaofeng Deng Jia Wang Rong Wang Yan Zhang Dong Zhang Ji Zong Zhao | 2020 | Stroke & Vascular Neurology2020，5，1： | 1 |
| 2 | The Effect of Heterogeneity on Rock's Ultrasonic Attenuation and Its Correction显示文摘The effect of Rayleigh scatter caused by the heterogeneity of rocks, on attenuation measurement has been considered adequately. According to the related theory and calculation, we can distinguish the intrinsic attenuation from the scattering attenuation. And we amended the classic spectral ratio method, based on the homogeneous medium hypothesis. Using the improved spectral ratio method, we can obtain Q value within a wider frequency range, so we can eliminate the uncertainty condition in classic spectral ratio, where Q value depends on the frequency range. The frequency shift method has been introduced and improved. Those three methods on one set of data had been applied. The results obtained by using the classic and improved spectral ratio and frequency shift methods fit well. | Wang Baoshan, Sun Daoyuan,Li Shengjie, Li Weidong, Shi Xingjue, and Liu Bin Department of Earth and Space Science, University of Science and Technology of China, Hefei 230026, China | 2001 | Earthquake Research in China2001，15，3： | 1 |
| 3 | Negative differential friction coefficients of two-dimensional commensurate contacts dominated by electronic phase transition显示文摘Friction force(f)usually increases with the normal load(N)macroscopically,according to the classic law of Da Vinci–Amontons(f=μN),with a positive and finite friction coefficient(μ).Herein near-zero and negative differential friction(ZNDF)coefficients are discovered in two-dimensional(2D)van der Waals(vdW)magnetic CrI_(3)commensurate contacts.It is identified that the ferromagnetic–antiferromagnetic phase transition of the interlayer couplings of the bilayer CrI_(3)can significantly reduce the interfacial sliding energy barriers and thus contribute to ZNDF.Moreover,phase transition between the in-plane(p_(x)and p_(y))and out-of-plane(p_(z))wave-functions dominates the sliding barrier evolutions,which is attributed to the delicate interplays among the interlayer vdW,electrostatic interactions,and the intralayer deformation of the CrI_(3)layers under external load.The present findings may motivate a new concept of slide-spintronics and are expected to play an instrumental role in design of novel magnetic solid lubricants applied in various spintronic nano-devices. | Kun Liu Jiangtao Cheng Xingju Zhao Yandi Zhu Xiaoyan Ren Jinlei Shi Zhengxiao Guo Chongxin Shan Hongjie Liu Shunfang Li | 2022 | Nano Research2022，15，6： | 0 |
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