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Effect of high Na2O addition on distribution of phosphorus in lowbasicity converter slag

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Journal of Iron and Steel Research International 2019年第1期26卷 42-51页

作者： Chang Su Ning-ning Lv Jin-xing Yang liu-shun wu Hai-chuan Wang Yuan-chi Dong School of Metallurgical Engineering Anhui University of TechnologyMa'anshan 243032AnhuiChina Key Laboratory of Metallurgical Emission Reduction and Resources Recycling(Anhui University of Technology) Ministry of EducationMa'anshan 243002AnhuiChina

In order to improve the dephosphorization efficiency of low-basicity converter slag and decrease the consumption of solid CaO,the effect of high Na2O addition(0-15 mass%)on the distribution of P2O5 between solid solution and matrix phase was *** thermodynamic properties of slag samples were calculated by FactSage 7.0 ***,the dissolution behavior of phosphorus element from slag was *** results show that the mass fraction of 2CaO*SiO2-2CaO*Na2O*P2O5 solid solution increases when the Na2O content is increased in ***,the amount of formed solid solution changes little when the Na2O addition is more than 10 mass%.Moreover,the content of Na2O in solid solution would reach saturation when adding 15 mass%Na2O into the *** the increase in Na2O content in slag,the distribution ratio of P2O5 between solid solution and matrix phase *** values are evidently higher than the results reported in the ***,the activity of P2O5 in matrix phase and the activity coefficient of P2O5 in solid solution are decreased with increasing the Na2O content in ***,the dissolution ratio of phosphorus in citric acid solution could be improved by adding Na2O into slag,but the increment of dissolution ratio would decrease when the Na2O content exceeds 10 mass%in slag.

关键词： Na2O addition-Low-basicity converter slag Phosphorus distribution ratio Thermodynamic property Phosphorus dissolution behavior

温湿度和食物对暗黑鳃金龟幼虫存活及生长发育的影响

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昆虫学报 2017年第8期60卷 920-926页

作者：冯晓洁席国成刘福顺吴娱刘春琴王庆雷沧州市农林科学院河北沧州061001

【目的】明确重要生态因素对暗黑鳃金龟Holotrichia parallela幼虫种群的影响,从而为预测预报其发生提供理论依据。【方法】在室内采用自动控制温度、人工控制湿度的方法,观察温度、湿度和食物对暗黑鳃金龟幼虫存活率及发育历期的影响... 详细信息

【目的】明确重要生态因素对暗黑鳃金龟Holotrichia parallela幼虫种群的影响,从而为预测预报其发生提供理论依据。【方法】在室内采用自动控制温度、人工控制湿度的方法,观察温度、湿度和食物对暗黑鳃金龟幼虫存活率及发育历期的影响。【结果】结果表明,20~28℃适宜暗黑鳃金龟1-2龄幼虫的存活,其中24℃时存活率最高,达到74.9%±3.1%;12℃时发育历期最长,32℃时发育历期最短,20℃和24℃下发育历期适中。土壤含水量为7%~19%时暗黑鳃金龟1-2龄幼虫均能存活;其中在7%和19%时,幼虫存活率低于50%,在25%时幼虫全部死亡;在土壤含水量为16%时存活率最高,达到76.4%±2.5%。在供试的6种食物(小麦根、玉米根、棉花根、花生根、大豆根和马铃薯块)中,喂饲花生根的暗黑鳃金龟幼虫存活率最高,达到68.7%±3.2%。取食不同食物的幼虫发育历期差异显著,其中取食花生根的暗黑鳃金龟幼虫期最短,整个幼虫期仅为259 d(3龄幼虫期为227 d);而取食棉花根的幼虫期最长,整个幼虫期为346 d(3龄幼虫期为303 d)。【结论】温度、土壤含水量和食物对暗黑鳃金龟幼虫的存活和生长发育均具有显著影响;在幼虫期调控温湿度及改变其寄主植物结构可有效控制其发生危害。

关键词：暗黑鳃金龟幼虫温度土壤湿度食物存活率发育历期

Fracture Behavior of TiNi Based Shape Memory Alloy Cold-rolled Tube

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Chinese Journal of Aeronautics 2006年第B12期19卷 156-161页

作者： LI Yan-wu liu Fu-shun School of Materials Science and Engineering Beijing University of Aeronautics and Astronautics Beijing 100083 China

The microstructures and interracial characteristics of matrices at the inwalls and the out-walls of the cold-rolled tube with different amounts of deformation were investigated by the scanning electronic microscope （SEM）, the optical microscope （OM）, and the transmission electronic microscope （TEM） techniques. It was observed that as the amount of deformation increases, the flaws nucleate at the out-walls of the cold rolled tube, the stress-induced martensites change from （111 ） type Ⅰ twins to （011） type Ⅱ twins and then to （100） compound twins, nanocrystals and bulk amorphisation happen, the high density dislocation causes stress concentration at the out-walls of the Ti50Ni50 cold-rolled tube, and then precipitates its fracture, and the Ti2Ni particles strengthen the grain boundaries and curb the dislocation movements during plastic deformation. The inhomogeneity level of the grains in the Ti50Ni50 alloy plays an important role on the fracture of the Ti50Ni50 cold rolled tube.

关键词： shape memory alloy (SMA) cold-rolled tube stress-induced martensite (SIM) amorphisation dislocation

数据包络分析(DEA)在县域乡镇人力资源配置评价中的应用——以密云县为例

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市场与人口分析 2002年第5期8卷 56-62页

作者：郑照宁刘德顺贾婧轩武玉英清华大学现代管理研究中心北京100084 北京工业大学经济与管理学院北京100022

人力资源是国民经济中极为重要的主体资源,它的配置好坏日益决定着县域经济能否持续健康的发展。利用数据包络分析（DEA）,以北京市密云县为例,进行各乡镇人力资源配置评价和分析,并对结果进行了讨论。

关键词：数据包络分析 DEA 乡镇人力资源配置

EXPONENTIAL DECAY FOR A NONLINEAR VISCOELASTIC EQUATION WITH SINGULAR KERNELS

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Acta Mathematica Scientia 2012年第6期32卷 2237-2246页

作者： shun-Tang wu General Education Center National Taipei University of Technology Taipei 106~ China

The nonlinear viscoelastic wave equation ｜μt｜^pμtt-△μ-μutt＋∫^t0g（t-s）△μ（s）ds＋｜μ｜^pU=0,in a bounded domain with initial conditions and Dirichlet boundary conditions is consid- ered. We prove that, for a class of kernels 9 which is singular at zero, the exponential decay rate of the solution energy. The result is obtained by introducing an appropriate Lyapounov functional and using energy method similar to the work of Tatar in 2009. This work improves earlier results.

关键词： viscoelastic wave equation kernel exponential decay memory term singular kernel

Pivotal Factors Concerned in Design of Acupuncture Clinical Research:From Two Articles in JAMA

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Chinese Journal of Integrative Medicine 2017年第11期23卷 809-811页

作者： wu Jia-ni QIN Zong-shi liu Zhi-shun Department of Acupuncture Guang anmen HospitalChina Academy of Chinese MedicaI Sciences Beijing(100053)China

Two randomized controlled trials of acupuncture concerning polycystic ovary syndrome（PCOS） and stress urinary incontinence（SUI） were published simultaneously in the 24 th issue, 2017 of The Journal of the American Medical Association（JAMA）. A trial involving PCOS indicated that active acupuncture did not increase live birth compared with sham acupuncture; meanwhile, another trial referring to SUI showed that electroacupuncture resulted in less urine leakage compared with sham electroacupuncture. With an eye to the negative and positive results of acupuncture, three pivotal factors should be contemplated：（1） proper illness for acupuncture, that is, a problem need to be solved in current medical science, and acupuncture may really work for it;（2） proper pre-studied primary outcome, which is better be objective and repeatedly measurable to reveal the therapeutic effect of acupuncture truly and objectively;（3） proper sham control, which can blind the patients to the upmost extent with minimal biological effects. Through the publication of clinical trials of acupuncture in high-impact journals in recent years, researchers should have confidence in their clinical trials by pondering over these three pivotal factors.

关键词： acupuncture clinical trials study design high impact journal

Intra-beam scattering and beam lifetime in a candidate lattice of the soft X-ray diffraction-limited storage ring for the upgraded SSRF

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Nuclear Science and Techniques 2021年第8期32卷 57-66页

作者： Xin-Zhong liu shun-Qiang Tian Xu wu Meng Wang Zhen-Tang Zhao Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201204China Shanghai University Shanghai 200444China

New-generation synchrotron light sources are being designed and operated worldwide to provide brighter radiation by reducing the beam emittance to X-ray diffraction ***-beam scattering(IBS)and Touschek scattering in such facilities are significant and require attention because of their ultra-low ***,cure strategies need to be carefully studied to obtain highquality photon *** the Shanghai Synchrotron Radiation Facility Upgrade(SSRF-U),a candidate lattice of the storage ring,reaching the soft X-ray diffraction limit,was designed and presented for the first time in this *** emittance growth and beam lifetime in the SSRF-U storage ring were studied using particle simulations for a series of different machine *** gains with RF frequencies of 100 MHz and 500 MHz were *** with a better filling pattern,a more suitable RF frequency was adopted in the *** variations in the equilibrium beam emittance with beam coupling and bunch-lengthening were identified using *** beam coupling and required bunch-lengthening for the SSRF-U storage ring were thus *** fitness of the beam energy in the SSRF-U was subsequently assessed using the obtained ***,the Touschek scattering and beam lifetime were calculated,and an acceptable total beam lifetime was obtained.

关键词： Diffraction-Limited Storage Ring(DLSR) Shanghai Synchrotron Radiation Facility Upgrade(SSRFU) Intra-Beam Scattering(IBS) Touschek scattering Beam lifetime

Proteasome inhibitor ameliorates severe acute pancreatitis and associated lung injury of rats

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World Journal of Gastroenterology 2008年第20期14卷 3249-3253页

作者： Xi Chen shun-Le Li Tao wu Ji-Dong liu Department ofGeneral Surgery The Second Affiliated Hospital of MedicalCollege of Xi'an Jiaotong University Xi'an 710004 ShaanxiProvince China

AIM: To observe the effect of proteasome inhibitor MG-132 on severe acute pancreatitis (SAP) and associated lung injury of rats. METHODS: Male adult SD rats were randomly divided into SAP group, sham-operation group, and MG-132 treatment group. A model of SAP was established by injection of 5% sodium taurocholate into the biliary- pancreatic duct of rats. The MG-132 group was pretreated with 10 mg/kg MG-132 intraperitoneally (ip) 30 min before the induction of pancreatitis. The changes in serum amylase, myeloperoxidase (MPO) activity of pancreatic and pulmonary tissue were measured. The TNF-α level in pancreatic cytosolic fractions was assayed with an enzyme-linked immunosorbent assay (ELISA) kit. Meanwhile, the pathological changes in both pancreatic and pulmonary tissues were also observed. RESULTS: MG-132 significantly decreased serum amylase, pancreatic weight/body ratio, pancreatic TNF-α level, pancreatic and pulmonary MPO activity (P < 0.05). Histopathological examinations revealed that pancreatic and pulmonary samples from rats pretreated with MG-132 demonstrated milder edema, cellular damage, and inflammatory activity (P < 0.05). CONCLUSION: The proteasome inhibitor MG-132 shows a protective effect on severe acute pancreatitis and associated lung injury of rats.

关键词： Severe acute pancreatitis Proteasomeinhibitor MG-132 Lung injury

BLOW-UP OF SOLUTION FOR A VISCOELASTIC WAVE EQUATION WITH DELAY

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Acta Mathematica Scientia 2019年第1期39卷 329-338页

作者： shun-Tang wu General Education Center National Taipei University of Technology

In this paper, we consider the following viscoelastic wave equation with delay|u_t|~ρu_(tt)-△u-△u_(tt)+∫_0~t g(t-8)△u(8)d8 + μ_1 u_t(x,t) + μ_2 u_t(x,t-τ) = b|u|^(p-2) u in a bounded domain. Under appropriate conditions on μ1, μ2, the kernel function g, the nonlinear source and the initial data, there are solutions that blow up in finite time.

关键词： blow up nonlinear source wave equation delay viscoelastic