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苏北-胶南构造混杂岩带冷却历史的多重扩散域^(40)Ar-^(39)Ar热年代学研究

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岩石学报 1992年第1期8卷 1-17页

作者：陈文寄 t.M.Harrison M.t.Heizler 刘若新马宝林李继亮国家地震局地质研究所 Dept. of Ess UCLA Los Angeles CA 90024 U.S.A 中国科学院地质研究所

对采自苏北-胶南构造混杂岩带中的15个矿物样品进行了国内首次系统的多重扩散域^(40)Ar-^(39)Ar年龄谱研究,其中七个样品的冷却历史表明,这一地区存在着两个明显的快速冷却事件:172～196Ma(10～40℃/Ma)和105～123Ma(4～10℃/Ma)。采自... 详细信息

对采自苏北-胶南构造混杂岩带中的15个矿物样品进行了国内首次系统的多重扩散域^(40)Ar-^(39)Ar年龄谱研究,其中七个样品的冷却历史表明,这一地区存在着两个明显的快速冷却事件:172～196Ma(10～40℃/Ma)和105～123Ma(4～10℃/Ma)。采自南缘的样品给出的这一地区最早抬升事件的时间大约为260Ma。这些结果表明苏北-胶南碰撞带的剥蚀历史可能与秦岭-大别山造山带相一致。应用多重扩散域新理论可以从单一长石样品揭示较完整的热历史。

关键词：混杂岩带扩散域同位素年代学

statistical Characteristics of Field-Aligned Currents in the Plasma sheet Boundary Layer

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Statistical Characteristics of Field-Aligned Currents in the...

Dielectric relaxation and conduction mechanism in Aurivillius ceramic Bi_(5)ti_(3)FeO_(15)

2020年中国地球科学联合学术年会

作者： Y.Q.Chen M.Y.Wu t.L.Zhang Y.s.Huang G.Q.Wang R.Nakamura W.Baumjohann C.t.Russell B.J.Giles University of science and technology of China Harbin Institute of technology shenzhen Austrian Academy of sciences University of California Goddard space Flight Center

studying the energy and momentum conversion and transfer is key to fully understand and predict how would the ionosphere and magnetosphere react to the input solar wind and interplanetary magnetic field conditions. Previous studies show that field-aligned currents(FACs) are significant in transferring the energy and momentum between the magnetosphere and the ionosphere, and the large-scale FACs would show seasonal variations at ionospheric altitudes due to ionospheric conductance. the plasma sheet boundary layer(PsBL) region is important in the magnetotail and nightside ionosphere coupling process.

关键词： statistical Characteristics of Field-Aligned Currents in the Plasma sheet Boundary Layer

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International Journal of Minerals,Metallurgy and Materials 2021年第6期28卷 1063-1071页

作者： Rasmita Jena K.Chandrakanta P.Pal Md.F.Abdullah s.D.Kaushik A.K.singh Department of Physics and Astronomy National Institute of Technology RourkelaRourkela-769008OdishaIndia UGC-DAE Consortium for scientific Research Mumbai Centre BARCMumbai-400085India

For this study,we synthesized Aurivillius Bi_(5)ti_(3)FeO_(15) ceramic using the generic solid-state reaction route and then performed roomtemperature X-ray diffraction to confirm that the compound had a single phase with no *** surface morphology of the prepared sample was observed to contain microstructural grains approximately 0.2–2μm in *** dielectric properties of the sample were determined as a function of frequency in a range of approximately 100 Hz to 1 MHz at various temperatures(303 K≤t≤773 K).Nyquist plots of the impedance data were found to exhibit a semi-circular arc in the high-temperature region,which is explained by the equivalent electrical circuit(R_(1)C_(1))(R_(2)QC_(2)),where R_(1) and R_(2) represent the resistances associated with the grains and grain boundaries,respectively,C_(1) and C_(2) are the respective capacitances,and Q is the constant phase element(CPE),which accounts for non-Debye type of *** results indicate that both the resistance and capacitance of the grain boundaries are more prominent than those of the *** alternating current(ac)conductivity data were analyzed based on the Jonscher universal power law,which indicated that the conduction process is dominated by the hopping *** calculated activation energies of the relaxation and conduction processes were very similar(0.32 to 0.53 eV),from which we conclude that the same type of charge carriers are involved in both processes.

关键词： Nyquist plot impedance spectroscopy activation energy ac conductivity hopping

Estimation of the Power of the Anomalous Microwave Emission

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World Journal of Condensed Matter Physics 2020年第3期10卷 105-117页

作者： Kristopher t. Pickens Giovanna scarel Department of Physics and Astronomy James Madison University Harrisonburg VA USA

Context and Background: the product of the electromagnetic (EM) wave’s power P times its period τ, i.e. Pτ, is the amount of energy conserved in EM wave’s absorption in matter. Whether Pτ is the amount of energy ... 详细信息

strong>Context and Background:strong> The product of the electromagnetic (EM) wave’s power P times its period τ, i.e. Pτ, is the amount of energy conserved in EM wave’s absorption in matter. Whether Pτ is the amount of energy conserved in the emission of EM waves from matter is not assessed. Motivation: In this research, we perform a computational study to explore the ability of Pτ span>to represent the amount of energy conserved in EM wave’s emission from matter. Hypothesis: Since the magnitude of the power P of emitted EM waves computed through Larmor’s formula for a rotating dipole is excessively small, we alternatively hypothesize that Pτ and the law of conservation of energy can lead to a realistic estimation of P. Methods:span style="font-family:Verda

关键词： Anomalous Microwave Emission spinning Dust Power of Emitted Radiation

On a shallow Water Model for the simulation of turbidity Currents

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Communications in Computational Physics 2009年第9期6卷 848-882页

作者： t.Morales de Luna M.J.Castro Dıaz C.Pares Madronal E.D.Fernandez Nieto Analisis Matematico Facultad de Ciencias–Univ.MalagaCampus de Teatinoss/n29071-MalagaSpain Dpto.Matematica Aplicada I ETS Arquitectura–Univ.SevillaAvda.Reina Mercedes N.241012-SevillaSpain

We present a model for hyperpycnal plumes or turbidity currents that takes into account the interaction between the turbidity current and the bottom,considering deposition and erosion effects as well as solid transport of particles at the bed load due to the *** entrainment from the ambient water in which the turbidity current plunges is also *** of ambient water is neglected and the rigid lid assumption is *** model is obtained as a depth-average system of equations under the shallow water hypothesis describing the balance of fluid mass,sediment mass and mean *** character of the system is analyzed and numerical simulations are carried out using finite volume schemes and path-conservative Roe schemes.

关键词： turbidity currents hyperbolic systems finite volume methods path-conservative schemes numerical modeling

Metabolic syndrome does not affect sustained virologic response of direct-acting antivirals while hepatitis C clearance improves hemoglobin A1c

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World Journal of Hepatology 2018年第9期10卷 612-621页

作者： tien s Dong Elizabeth s Aby Jihane N Benhammou Jenna Kawamoto steven-Huy Han Folasade P May Joseph R Pisegna the Vatche and tamar Manoukian Division of Digestive Diseases University of California Los AngelesDepartment of MedicineUniversity of California David Geffen School of MedicineLos AngelesCA 90095United States Division of Gastroenterology Hepatology and Parenteral NutritionDepartment of MedicineVA Greater Los Angeles Healthcare SystemLos AngelesCA 90073United States the Pfleger Liver Institute Department of SurgeryUniversity of California David Geffen School of MedicineLos AngelesCA 90095United States VA Health services Research and Development Center for the study of Healthcare Innovation Center for the study of Healthcare Innovation Implementation and Policy(CSHIIP)Los AngelesCA 90073United States Jonsson Comprehensive Cancer Center Los AngelesCA 90095United States

AIM to determine whether successful treatment with direc-tacting antivirals(DAA) is associated with improvements in hemoglobin A1 c(HbA1 c) and if type 2 diabetes mellitus(t2 DM) or metabolic syndrome affects sustained virologic response(sVR).MEtHODs We performed a retrospective analysis of all hepatitis C virus(HCV) patients at the VA Greater Los Angeles Healthcare system treated with varying DAA therapy between 2014-2016. separate multivariable logistic regression was performed to determine predictors of HbA1 c decrease ≥ 0.5 after DAA treatment and predictors of sVR 12-wk post treatment(sVR12).REsULts A total of 1068 patients were treated with DAA therapy between 2014-2016. the presence of t2 DM or metabolic syndrome did not adversely affect sVR12. 106 patients had both HCV and t2 DM. Within that cohort,patients who achieved sVR12 had lower mean HbA1 c pre treatment(7.35 vs 8.60,P = 0.02),and lower mean HbA1 c post-treatment compared to non-responders(6.55 vs 8.61,P = 0.01). the mean reduction in HbA1 c after treatment was greater for those who achieved sVR12 than for non-responders(0.79 vs 0.01,P = 0.03). In adjusted models,patients that achieved sVR12 were more likely to have a HbA1 c decrease of ≥ 0.5 than those that did not achieve sVR12(adjusted OR = 7.24,95%CI: 1.22-42.94). CONCLUsION In HCV patients with t2 DM,successful treatment with DAA was associated with a significant reduction in HbA1 c suggesting that DAA may have a role in improving insulin sensitivity. Furthermore,the presence of t2 DM or metabolic syndrome does not adversely affect sVR12 rates in patients treated with DAA.

关键词： Hepatitis C virus Hemoglobin A1c Diabetes mellitus Direct-acting antivirals Metabolic syndrome

EFFECt OF DIEtARY CRUDE PROtEIN CONCENtRAtION ON PRODUCtION AND NItROGEN BALANCE OF LACtAtING DAIRY COWs

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EFFECT OF DIETARY CRUDE PROTEIN CONCENTRATION ON PRODUCTION ...

IB_2期宫颈癌风险组患者无病存活率的外科病理学预测指标:传统模型是否仍适用

中国畜牧兽医学会动物营养学分会第八届全国会员代表大会暨第十次动物营养学术研讨会

作者： t.sun s.L.Li Z.J.Cao Y.X.Dong H.t.Zhang state Key Laboratory of Animal Nutrition,College of Animal science and technology,China Agricultural University,Beijing,100193,China

Four ruminally cannulated multiparous cows averaging 73±13days in milk(DIM)were used in a 4× 4Latin square design to determine the effect of different dietary crude protein levels on ruminal fermentation and production performance. Each experimental period was 21d, which included a 14d of adjustment to experimental diets followed by 7days of sample collection. the diets contained[dry matter(DM)basis]20% alfalfa hay,

关键词： dietary crude protein rumen-degradable protein rumen-undegradable protein nitrogen metabolism nitrogen excretion

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世界核心医学期刊文摘（妇产科学分册） 2005年第1期1卷 40-41页

作者： Kamelle s.A. Rutledge t.L. tillmanns t.D. 赵秀敏 306 E. Fremont st. Arlington Heights IL 60004United States

Objective. to evaluate how the independent predictors of recurrence f or stage IB2 cervical cancers treated with up-front radical hysterectomy apply to establ ished risk models. Methods. Patients with IB2 cervical cancers diagnosed from 19 90 to 2000 were identified from tumor registries of two institutions. Patients w ere classified into risk groups: high-risk (HR) (positive nodes, parametria, or margins), intermediate-risk (IR) (positive lymph vascular space involvement (L VsI) with any cervical stromal invasion (CsI), or (-) LVsI and > middle-CsI), or low-risk (LR) (absence of HR or IR characteristics). Disease free survival ( DFs) was estimated by Kaplan-Meier method and comparisons between subgroups wer e studied by log rank. A Cox proportional hazards model was used to determine in dependent predictors of recurrence. Results. We identified 86 patientswith stage IB2 tumors treated by *** found 34%of patients to be HR, 60%IR, and 6%LR. Of the 52 IR patients, 28 had (+) LVsI with superficial, middle, and outer 1/3 CsI, and 24 had (-) LVsI with middle or outer 1/3 invasion. Overall, postoperat ive adjuvant radiation (PRt) was used in 52%of the 86 patients, including 0/5 L R, 16/52 IR, and 29/29 HR patients. Univariate predictors of recurrence were pel vic nodal disease, (+) LVsI, (+) parametria, outer 1/3 CsI, and tumor size > 6 cm. Age, grade, histology, and the use of postoperative radiation were not asso ciated with recurrence. Multivariate analysis identified LVsI as the only indepe ndent predictor of recurrence (RR 5.2, P = 0.03). two-year DFs for LR, IR, and HR patients was 100%, 83%, and 60%, respectively. Only 4/24 (17%) IR patient s with (-) LVsI got PRt compared with 12/28 (43%) of IR patients with (+) LVsI. the 2-year DFs for IR patients with (-) LVsI was 96%. IR (+) pa tients recurred more frequently with a 2-year DFs of 71%. Conclusions. Overall , 66%of patients with IB2 disease were classified as having low or intermediate -risk disease. IR patient

关键词： IB2 外科病理学宫旁组织子宫根治术肿瘤登记淋巴结转移脉管放射性治疗模型评估中度危险

基于动力触探的砾性土液化判别方法通用性研究

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岩土工程学报 2016年第1期38卷 163-169页

作者：曹振中刘荟达袁晓铭 t Leslie Youd 中国地震局工程力学研究所中国地震局地震工程与工程振动重点实验室黑龙江哈尔滨150080 杨百翰大学土木与环境工程系美国普若佛84602

动力触探是针对砾性土力学性能评价的一种原位测试技术,具有设备简单、操作方便等优势。分别在成都平原和美国Utah地区选取典型砾性土场地,进行中美联合动力触探和有效锤击能量的测试与标定,结果表明:1在成都平原3个砾性土场地获取了中... 详细信息

动力触探是针对砾性土力学性能评价的一种原位测试技术,具有设备简单、操作方便等优势。分别在成都平原和美国Utah地区选取典型砾性土场地,进行中美联合动力触探和有效锤击能量的测试与标定,结果表明:1在成都平原3个砾性土场地获取了中国超重型动力触探1321个重锤锤击能量记录,锤击能量传递系数的平均值约为90%,标准差为7.7%,锤击数离散性受设备操作方法的影响较大;2在美国钻机上安装中国超重型动力触探标准探头,可以有效穿透选取的试验深度为20 m的砾性土场地,并进行分层、力学性能评价;3在美国Echo dam下游坝基上2个砾性土场地获取了美国动力触探1438个重锤锤击记录,锤击能量传递系数约为74%,标准差为8.7%,锤击数离散性受拉绳、钻杆摩擦力的影响较大;4对锤击数进行能量修正之后,以2008年汶川地震砾性土液化为背景、以动力触探锤击数为基本指标的砾性土液化判别方法,具有国际通用的可行性。

关键词：动力触探砾性土液化能量修正判别方法通用性