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Biomedical and Environmental Sciences 2020年第11期33卷 839-848页

作者： wu feng liang DANG Lei ZHOU Hua YU Miao WEI feng JIANG liang LIU Zhong Jun LIU Xiao Guang Department of Orthopedic Surgery Peking University Third HospitalBeijing 100191China

Objective We aimed to compare the clinical and radiological outcomes of midline lumbar fusion(MIDLF)versus minimally invasive transforaminal lumbar interbody fusion(MI-TLIF)in patients with degenerative spondylolisthesis and/or stenosis in L4-L5 two years after *** Consecutively treated patients with lumbar pathology who underwent MIDLF(n=16)and a historical control group who underwent MI-TLIF(n=34)were *** symptoms were evaluated using Oswestry Disability Index(ODI),the 36-Item Short-Form Health Survey,and visual analog scale(VAS)scores before surgery and 3,6,12,and 24 months after *** The mean operative time and hematocrit(HCT,Day 1)were significantly shorter and lower in MIDLF cases(174 min vs.229 min,P<0.001;0.34 vs.0.36,P=0.037).The MI-TLIF group showed better improvement than the MIDLF group in ODI and VAS back and leg pain at 3 months *** leg pain was higher in MIDLF than in MI-TLIF cases at 6 *** 24 months follow-up,VAS back pain was higher in MI-TLIF than in MIDLF cases(P=0.018).Conclusion MIDLF is comparable to MI-TLIF at L4-5 in clinical outcomes and fusion rates,and the results verified the meaningful advantage of using MIDLF for the elderly with osteoporosis.

关键词： Minimally invasive techniques Cortical bone trajectory Clinical outcomes Midline lumbar fusion Transforaminal lumbar interbody fusion

Surface Modification of Ceramic Materials Using Excimer Laser

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Journal of Materials Science & Technology 2000年第4期16卷 401-404页

作者： Yingna wu, Zhongchao feng and Jing liang (Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, China) Institute of Metal Research Chinese Academy of Sciences Shenyang 110015 China

Changes of surface morphology following XeCI excimer laser irradiation were investigated for three engineering ceramic materials (Al2O3, Al2O3-SiC nanocomposite and Si3N4). Al2O3 and AI2O3-SiC nanocomposite samples exhibit a smooth rapid melt layer on the surface, and the formation of the metastabfe γ-Al2Oa was observed. A silicon-rich layer on the surface was formed after laser irradiation of Si3N4. The toughness K1c of the materials was measured by the indentation fracture method. After laser irradiation, the toughness of Al2O3, Al2O3-SiC nanocomposite and Si3N4 was improved to various degrees: Al2O3-SiC nanocomposite, 60% (max.); AI203, 40% (max.); Si3N4, 12% (max.).

关键词： Surface Modification of Ceramic Materials Using Excimer Laser SiC

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基于指数门限的语音端点检测方法

数据采集与处理 2005年第4期20卷 385-389页

作者：吴凤梁吴及王作英清华大学电子工程系北京100084

提出了一种基于指数门限(ET)的端点检测方法.ET法为短时能量的概密函数(PDF)建立起统一的语音和噪声模型,根据当前语音数据的信噪比估计出最优的检测门限,并给出了最优检测门限的指数型公式.在'八六三'大词汇量连续语音数据库上的实验... 详细信息

提出了一种基于指数门限(ET)的端点检测方法.ET法为短时能量的概密函数(PDF)建立起统一的语音和噪声模型,根据当前语音数据的信噪比估计出最优的检测门限,并给出了最优检测门限的指数型公式.在'八六三'大词汇量连续语音数据库上的实验结果表明,ET法具有较好的检测性能,在噪声环境中表现出较好的稳健性,信噪比为0 dB时,检测正确率可达89.5%.在信噪比为0～15dB时,检测正确率要明显高于基本能量法、对数能量聚类法(LEC)以及χ2法等语音检测(VAD)方法.

关键词：语音识别语音检测指数门限端点检测

基于调风效率与通风阻力的封闭型网络利弊分析

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西安科技大学学报 2011年第5期31卷 534-539,558页

作者：吴奉亮西安科技大学能源学院陕西西安710054 教育部西部矿井开采及灾害防治重点实验室陕西西安710054

提出了"封闭性网络"的概念,分析了封闭型网络的形成原因及其合理性;与含自由风路的风网对照,说明了封闭型网络可导致矿井出现附加阻力、增加矿井总阻力的弊端。基于最长路算法原理,说明了附加阻力的计算方法。实现了以确定自由分支和加... 详细信息

提出了"封闭性网络"的概念,分析了封闭型网络的形成原因及其合理性;与含自由风路的风网对照,说明了封闭型网络可导致矿井出现附加阻力、增加矿井总阻力的弊端。基于最长路算法原理,说明了附加阻力的计算方法。实现了以确定自由分支和加边法找独立回路为内容的封闭型网络解除方法。以某矿通风系统优化为例说明了封闭型网络的具体表现与相关方法的优越之处。

关键词：封闭型网络最长路算法附加阻力调风效率通风系统优化

Sky location of massive black hole binaries in the foreground of Galactic white dwarf binaries

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 97-108页

作者： Pan Guo Hong-Bo Jin Cong-feng Qiao Yue-liang wu The International Centre for Theoretical Physics Asia-Pacific University of Chinese Academy of Sciences The School of Physical Sciences University of Chinese Academy of Sciences Institute for Frontiers in Astronomy and Astrophysics Beijing Normal University National Astronomical Observatories Chinese Academy of Sciences Institute of Theoretical Physics Chinese Academy of Sciences

For space-based gravitational wave （GW） detection,the main noise source for massive black hole binaries （MBHBs） is attributed to approximately 10～7double white dwarf binaries in the *** a GW source,the amplitude of the detector response,recorded by a space-based gravitational wave detector,exhibits a modulation effect with a year period when observing the source from various orbital *** the adverse conditions mentioned above,where there is a strong foreground noise and annual modulation in the signals,we employed the wavelet transform and the strong-amplitude relevant orbital position search methods,which allows the weak MBHB sources to achieve higher locating *** detail,for two MBHB sources of lower intensity,the precision of luminosity distance,represented by the ratio ?DL/DLat the 95%confidence level,is enhanced by factors of ～*** angular resolutions,denoted by??s,are enhanced by a factor of ～*** improvements increase the number of detectable GW sources,facilitate multi-messenger follow-up observations and provide constraints on the cosmological constant.

关键词： space-based gravitational wave detection gravitational waves massive black hole binaries

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矿井主要通风机性能曲线的最优多项式拟合

西安科技大学学报 2011年第1期31卷 14-18页

作者：吴奉亮西安科技大学能源学院陕西西安710054 教育部西部矿井开采及灾害防治重点实验室陕西西安710054

为确定主要通风机性能曲线多项式拟合函数的最优阶数,将回归系数的显著性作为最优阶数的判定依据。分析了基于最小二乘法的任意阶数主扇性能曲线拟合模型;指出了回归多项式的各项系数应与风压显著相关才是合理的,在合理基础之上阶数最... 详细信息

为确定主要通风机性能曲线多项式拟合函数的最优阶数,将回归系数的显著性作为最优阶数的判定依据。分析了基于最小二乘法的任意阶数主扇性能曲线拟合模型;指出了回归多项式的各项系数应与风压显著相关才是合理的,在合理基础之上阶数最大的即为最优;采用F检验法计算了回归多项式各系数的显著性。对于有m个样点的测定数据,通过m-1次拟合,可确定多项式的最优阶数。编制了相应的程序,实现了最佳阶数回归函数求解与曲线可视化,结合一包含13个测点的实例显示了这种方法的优越性。

关键词：主扇性能曲线最优多项式显著性检验拟合

Recurrence Factors in Giant Cell Tumors of the Spine

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Chinese Medical Journal 2017年第13期130卷 1557-1563页

作者： Han-Qiang Ouyang liang Jiang Xiao-Guang Liu feng Wei Shao-Min Yang Na Meng Ping Jiang Miao Yu feng-liang wu Lei Dang Hua Zhou Hua Zhang Zhong-Jun Liu Department of Orthopaedics Peking University Third Hospital Beijing 100191 China Department of Pathology Peking University Health Science Center Beijing 100191 China Department of Radiotherapy Peking University Third Hospital Beijing 100191 China Research Center of Clinical Epidemiology Peking University Third Hospital Beijing 100191 China

Background： Giant cell tumors （GCTs） are benign, locally aggressive tumors. We exalnined the rate of local rectirrence of spinal GCTs and sought to identify recurrence factors in patients who underwent surgery. Methods： Between 1995 and 2014, 94 mobile spine GCT patients were treated at our hospital, comprising 43 male and 51 female patients with an average age of 33.4 years. Piecemeal intralesional spondylectomy and total en bloc spondylectomy （TES） were performed. Radiotherapy was suggested for recurrent or residual GCT cases. Since denosumab was not available before 2014 in our country, only interferon and/or zoledronic acid was suggested. Results： Of the 94 patients, four underwent conservative treatment and 90 underwent operations. Seventy-five patients （79.8%） were followed tip for a minimum of 24 months or until death. The median follow-up duration was 75.3 months. The overall recurrence rate was 37.3%. Ten patients （13.3%） died before the last follow-up （rnedian： 18.5 months）. Two patients （2.6%） developed osteogenic sarcoma. The local recurrence rate was 80.0% （24/30） in patients who underwent intralesional curettage, 8.8% （3/34） in patients who underwent extracapsular piecemeal spondylectomy,and 0 （0/9） in patients who underwent TES. The risk factors for local recurrence were lesions located in the cervical spine （P = 0.049）, intralesional curettage （P 〈 0.001 ）, repeated surgeries （P 0.014）, and malignancy （P 〈 0.001 ）. Malignant transformation was a significant risk factor for death （P 〈 0.001 ）. Conclusions： Cervical spinal tumors, curettage, and nonintact tumors were risk l;actors for local recurrence. Intralesional curettage and malignancy were the most important significant factors for local rectirrence and death, respectively.

关键词： Extracapsular Spondytectomy Giant Cell Tumors Intralesional Curettage Spine Recurrence Total En blocSpondylectomy

RT-PCR方法检测贝类中诺沃克样病毒的研究

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食品科学 2008年第5期29卷 347-351页

作者：张颖吴风亮中国环境管理干部学院生态学系河北秦皇岛066001 河北农业大学农村发展学院河北保定071001

目的:本研究从病毒富集和核酸提取两方面进行探索,旨在建立一个反转录(RT)PCR技术检测贝类中诺沃克样病毒(NLVs)的方法。方法:利用脊髓灰质炎病毒作为参照毒株,优化了甘氨酸缓冲液-聚乙二醇(PEG)病毒浓缩方法;同时比较了异硫氰酸胍法、S... 详细信息

目的:本研究从病毒富集和核酸提取两方面进行探索,旨在建立一个反转录(RT)PCR技术检测贝类中诺沃克样病毒(NLVs)的方法。方法:利用脊髓灰质炎病毒作为参照毒株,优化了甘氨酸缓冲液-聚乙二醇(PEG)病毒浓缩方法;同时比较了异硫氰酸胍法、SDS-蛋白酶K法、Trizol-异丙醇法、试剂盒法四种RNA提取方法;对市售贝类样品进行了检测,并利用基因测序对阳性样品进行验证。结果:本研究采用的pH9.5甘氨酸缓冲液-16%聚乙二醇病毒浓缩法,病毒的回收率为16.8%,利用Trizol-异丙醇法提取RNA,检出限为8.1×102RT-PCR50/5g贝肉,实际检测贝类样品25件,其中3件样品为阳性,基因测序结果亦证实为阳性。结论:本研究建立了一个灵敏度较高、较为有效的RT-PCR技术检测贝类中诺沃克样病毒的方法。

关键词：诺沃克样病毒反转录PCR 贝类检测

Observation of acoustic hybrid topological phases induced by the p-d orbital interactions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 132-139页

作者： Xiao Xiang feng Gao Yu-Gui Peng Peng wu Zong-Lin Li Xue-feng Zhu School of Physics and Innovation Institute Huazhong University of Science and Technology

In spinless systems,growing attention has recently been attracted to synthetic gauge fields,which redefine the fundamental crystal symmetries by utilizing the projective algebraic ***,synthetic gauge fields have been commonly investigated in single orbital systems,and explorations on hybrid orbitals remain elusive in ***,we report the experimental observation of hybrid topological phases induced by hybrid synthetic gauge flux,which is formed by the interaction between p and d orbitals embedded in acoustic *** breaking the translation symmetries of Lxand/or Ly,we unambiguously demonstrate the first-order M?bius edge states and higher-order corner *** work establishes a platform for seeking exotic topological phases induced by hybrid-orbitals interactions and initializing the framework of hybrid-orbitalsrelated topological *** applications can be anticipated in scenarios such as high-quality sensing and robust wave trapping due to the stepwise energy distribution of the hybrid topological phase.

关键词： topological insulator synthetic gauge field projective symmetry corner states

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矿井风网雅可比矩阵对称特性及并行求解模型

煤炭学报 2016年第6期41卷 1454-1459页

作者：吴奉亮高佳南常心坦李龙清西安科技大学安全学院陕西西安710054 西安科技大学教育部西部矿井开采与灾害防治重点实验室陕西西安710054

为了提高矿井通风网络解算软件的可靠性和求解大型风网时的性能,研究了通风网络雅可比矩阵的对称特性,引入并行计算方法求雅可比矩阵与回路风量修正值。分析了牛顿法求解矿井通风网络的原理,发现并证明了通风网络雅可比矩阵的对称特性,... 详细信息

为了提高矿井通风网络解算软件的可靠性和求解大型风网时的性能,研究了通风网络雅可比矩阵的对称特性,引入并行计算方法求雅可比矩阵与回路风量修正值。分析了牛顿法求解矿井通风网络的原理,发现并证明了通风网络雅可比矩阵的对称特性,提出用LDLT分解法求解回路风量修正值以有效减少每次迭代的时间。根据多CPU计算机的特点,研究了通风网络雅可比矩阵以及回路风量修正值方程组的并行求解模型。采用VC语言的多线程开发技术实现了通风网络的并行求解,通过两个算例验证了本模型的正确性与高效性。

关键词：矿井通风网络解算并行计算牛顿法雅可比矩阵对称矩阵