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Comparison of noise-levels between superconducting gravimeter and gPhone gravimeter
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作者 Kun Zhang Ziwei Liu +1 位作者 Xiaotong Zhang Ying Jiang 《大地测量与地球动力学:英文版》 2018年第6期498-503,共6页
For comparison of noise levels between superconducting gravimeters(SGs) and gPhone gravimeters, we conducted an experiment in which we carried out co-located observations of gravity changes by the same gPhone gravimet... For comparison of noise levels between superconducting gravimeters(SGs) and gPhone gravimeters, we conducted an experiment in which we carried out co-located observations of gravity changes by the same gPhone gravimeter and Superconducting Gravimeter(SG) at Wuhan, Lhasa and Lijiang stations respectively, and the observation at each station lasted approximately 2 months. We calculated the root mean square(RMS) of the gravity residual in each station and selected the five days in which the gravity residuals had the minimum RMS representing the background noise level as a quiet period. Based on the gravity residuals in these five quiet days, we calculated the mean power spectral density(PSD), seismic band noise magnitude(SNM) and sub-seismic band noise magnitude(SSNM). Furthermore, we simulated the influence of scale-factor error on SNM. We found that the SNM of the SGs ranged between 1.22 and 1.50 and the SSNM ranged from 3.96 to 4.74 during the experiment. The SNM of the gPhone gravimeter ranged from 2.93 to 3.06, and the SSNM of the gPhone gravimeter ranged between 4.17 and5.29. The SNM of the SG at Wuhan station was the highest among three SGs, while the corresponding SSNM was the lowest. The SG at Lhasa station, in contrast, had the highest SSNM and lowest SNM. The PSDs of gPhone gravimeters in high-frequency bands, including the seismic bands, were much larger than those of SGs. In the sub-seismic bands, SGs can approach or reach seismograph detection level. In the band frequency below 3×10-5 Hz, SGs and gPhone gravimeter have lower PSDs than seismometers,indicating that high-precision continuous gravimeters are better than seismometers in detecting longperiod signals. The variation of SNM caused by the scale-factor is generally in the range from -0.092 to 0.083, which has little influence on SNM result. 展开更多
关键词 SUPERCONDUCTING GRAVIMETER GPHONE GRAVIMETER Noise level SNM SSNM
CH4 and N2O emissions from double-rice cropping system as affected by Chinese milk vetch and straw incorporation in southern China
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作者 Heshui XU Dengyun LI +5 位作者 Bo ZHU Kai ZHANG Yadong YANG Chen WANG Ying JIANG Zhaohai ZENG 《农业科学与工程前沿:英文版》 2017年第1期59-68,共10页
Chinese milk vetch(CMV) and rice straw(RS)were incorporated into soil to substitute for synthetic N fertilizers and to maintain soil fertility. However, little is known about the integrated impacts of CMV and RS i... Chinese milk vetch(CMV) and rice straw(RS)were incorporated into soil to substitute for synthetic N fertilizers and to maintain soil fertility. However, little is known about the integrated impacts of CMV and RS incorporation on CH4 and N2O emissions in double-rice cropping systems in southern China. A field experiment was conducted to estimate the integrated impacts of CMV and RS incorporation in the early-and late-rice seasons on CH4 and N2O emissions. All treatments received uniform N inputs, 6%–37% of which was replaced by CMV and RS crop residue. CMV and/or RS incorporation produced equivalent or slightly more grain yield, while reducing N2 O emissions by 3%–43%. However, both CMV and RS incorporation increased CH4 emissions. Annual CH4 emissions ranged from 321 to 614 kg·hm–2from CMV and RS amendment treatments, which were 1.5–2.9 times higher than that from synthetic N. Compared with single synthetic N fertilizer, incorporation of CMV and/or RS increased GWP and yield-scaled GWP by 45%–164% and45%–153%, respectively. Our results demonstrate CMV and RS amendments replacing N fertilizer, maintained stable yield, mitigated N2O emission, but enhanced CH4 emission. Further study is needed on crop residue management in double-cropping rice systems. 展开更多
The influence of observation environment on background noise level of gPhone gravimeter
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作者 Xiaotong Zhang Ying Jiang +1 位作者 Kun Zhang Xinlin Zhang 《大地测量与地球动力学:英文版》 2017年第6期443-447,共5页
Based on the observations of 36 gPhone gravimeters in 2015, the background noise levels in the seismic frequency band(200-600 s) and sub-seismic band(1-6 h) are calculated. The differences in the PSD(power spectrum de... Based on the observations of 36 gPhone gravimeters in 2015, the background noise levels in the seismic frequency band(200-600 s) and sub-seismic band(1-6 h) are calculated. The differences in the PSD(power spectrum density) of each band of gPhone gravimetric gauges in different surrounding environments were analyzed and compared with Peterson's NLNM(new low-noise model) which is derived from the envelope at the power spectrum density of 75 seismograph stations around the world. The results showed that: the influence of station type on the noise magnitude of gPhone gravimeter is very small; The seismic band noise magnitude(hereinafter referred to as SNM) and the sub-seismic band noise magnitude(hereinafter referred to as SSNM) in the coastal gPhone gravimeter are higher than those of inland stations. Although the local hydrological change has a great influence on the gravity observation, the rainfall is not directly relative to the noise magnitude of the instrument. Except 3 coastal stations, the eight stations which had the highest amplitudes in the SNM were located near the seismic belt. This indicates that the SNM of the gPhone Gravimeter may reflect some seismic information.Compared with the NLNM model, the PSD of the gPhone gravimeter is lower than the NLNM model in the long period band(<3×10~(-5)Hz), indicating that the gPhone gravimeter is more suitable for detecting long-period signals(>10 h) than the seismometer. 展开更多
关键词 gPhone 比重计 背景噪音水平 NLNM 观察环境
狼疮性膀胱炎的临床特征及危险因素分析 预览
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作者 戴晓丹 肖亦之 +9 位作者 蒋莹 谢晓韵 黄婧 谢艳莉 宁旺斌 赵洪军 罗卉 游运辉 左晓霞 周亚欧 《中国现代医学杂志》 北大核心 2017年第11期63-67,共5页
目的 分析狼疮性膀胱炎患者的临床特征及危险因素。方法 选取27例确诊的狼疮性膀胱炎的住院患者作为病例组,并选取性别、年龄及病程相匹配的无狼疮性膀胱炎的系统性红斑狼疮(SLE)住院患者共135例作为对照组,回顾性分析两组间临床表现... 目的 分析狼疮性膀胱炎患者的临床特征及危险因素。方法 选取27例确诊的狼疮性膀胱炎的住院患者作为病例组,并选取性别、年龄及病程相匹配的无狼疮性膀胱炎的系统性红斑狼疮(SLE)住院患者共135例作为对照组,回顾性分析两组间临床表现、实验室检查与影像学的差异;通过Logistic回归分析初步探讨狼疮性膀胱炎的危险因素。结果 狼疮性膀胱炎的发生率1.3%,主要表现为下尿路症状、双侧输尿管扩张及肾积水等;与对照组相比,狼疮性膀胱炎患者的胃肠道症状的发生率高于无狼疮性膀胱炎的患者,但狼疮性肾炎和蛋白尿的发生率低于后者,差异有统计学意义(P〈0.05);SLE合并狼疮性膀胱炎组患者补体低于对照组,抗SSA抗体的阳性率高于对照组(P〈0.05);狼疮性膀胱炎组SLEDAI评分低于对照组(P〈0.05);Logistic回归分析发现胃肠道症状、低补体为狼疮性膀胱炎的危险因素。结论 胃肠道症状及低补体为狼疮性膀胱炎的危险因素,抗SSA抗体与狼疮性膀胱炎密切相关。 展开更多
关键词 狼疮性膀胱炎 危险因素 临床特征 输尿管扩张 肾积水 胃肠道症状 抗SSA抗体
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血小板衍化生长因子在牙槽骨组织缺损修复中的应用 预览
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作者 王雷 姜莹 +2 位作者 王倩 郑勇智 胡荣荣 《西藏医药》 2016年第3期83-85,共3页
牙周骨组织缺损的修复一直是备受瞩目的话题,其中,在生长因子对牙周骨组织缺损修复的应用中,血小板衍化生长因子是近年来研究和应用较多的一类生长因子,大量的研究表明,PDGF能促进成骨相关的细胞的趋化和有丝分裂,并促进血管的生成,最... 牙周骨组织缺损的修复一直是备受瞩目的话题,其中,在生长因子对牙周骨组织缺损修复的应用中,血小板衍化生长因子是近年来研究和应用较多的一类生长因子,大量的研究表明,PDGF能促进成骨相关的细胞的趋化和有丝分裂,并促进血管的生成,最终促进骨的再生和愈合。本文从PDGF在牙周骨组织缺损修复中的应用,对其分子结构、作用机制、实验研究和临床应用等研究进展做一综述。 展开更多
关键词 血小板衍化生长因子(PDGF) 牙周组织 牙槽骨 组织再生 骨重建
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Self-aligned-gate AlGaN/GaN heterostructure field-effect transistor with titanium nitride gate
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作者 张家琦 王磊 +4 位作者 李柳暗 王青鹏 江滢 朱慧超 敖金平 《中国物理B:英文版》 SCIE EI CAS CSCD 2016年第8期357-360,共4页
Self-aligned-gate heterostructure field-effect transistor(HFET) is fabricated using a wet-etching method.Titanium nitride(TiN) is one kind of thermal stable material which can be used as the gate electrode.A Ti/Au cap... Self-aligned-gate heterostructure field-effect transistor(HFET) is fabricated using a wet-etching method.Titanium nitride(TiN) is one kind of thermal stable material which can be used as the gate electrode.A Ti/Au cap layer is fixed on the gate and acts as an etching mask.Then the T-shaped gate is automatically formed through over-etching the TiN layer in 30% H_2O_2 solution at 95 ℃.After treating the ohmic region with an inductively coupled plasma(ICP) method,an Al layer is sputtered as an ohmic electrode.The ohmic contact resistance is approximately 0.3 Ω·mm after annealing at a low-temperature of 575 ℃ in N_2 ambient for 1 min.The TiN gate leakage current is only 10~(-8) A after the low-temperature ohmic process.The access region length of the self-aligned-gate(SAG) HFET was reduced from 2 μm to 0.3 μm compared with that of the gate-first HFET.The output current density and transconductance of the device which has the same gate length and width are also increased. 展开更多
关键词 异质结场效应晶体管 ALGAN/GAN 自对准栅 氮化钛 栅极 欧姆接触电阻 等离子体处理 欧姆接触电极
Therapeutic effect and apoptosis mechanism of lung-tonifying and expectorant decoction on lung cancer rats with Qi deficiency and blood stasis
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作者 Yuan Feng Ying Zhou +5 位作者 Ying Jiang Rui Liu Jian-Zhe Li You-Ke Xie Xue-Mei Li Fang Dai 《亚太热带医药杂志:英文版》 SCIE CAS 2015年第11期957-962,共6页
Objective:To explore the effect and specific mechanism of lung-tonifying and expectorant decoction on lung cancer rats with Qi deficiency and blood stasis,and aim to provide a new idea on treating the disease with tra... Objective:To explore the effect and specific mechanism of lung-tonifying and expectorant decoction on lung cancer rats with Qi deficiency and blood stasis,and aim to provide a new idea on treating the disease with traditional Chinese medicine based on syndrome differentiation.Methods:A total of 60 C57BL/6J male rats were included in the study.The model of Qi deficiency and blood stasis was established in 60 rats by using multiple-factor stimulation.About 10 rats were randomly taken to verify whether the model establishment was successful and the rest of 50 rats were divided into 5 groups with 10 rats each:blank control group,cisplatin group,low dose group,medium dose group and high dose group.The blank control group was treated with normal saline,and cisplatin group was treated with cisplatin while the other three groups were treated with lung-tonifying and expectorant decoction at different doses.The volume change in transplanted tumor,tumor inhibition rate,apoptosis rate,and expression of Bc1-2,Bax.cleaved caspase-3 and cleaved caspase-9 in 5 groups were compared.Results:The rapidest growth rate of transplanted tumor volume was observed in blank control group and the slowest in cisplatin group.The growth rate was gradually decreased with the increasing dose of lung-tonifying and expectorant decoction,and the difference in growth of tumor volume among groups was statistically significant(P<0.05).The cisplatin group showed the highest tumor inhibition rate,with dose-dependent increase(P<0.05).The apoptosis rate in low dose group was higher than blank control group but lower than high dose group(P<0.05).The apoptosis rate in medium dose group was significantly higher man blank control group(P).05).The apoptosis rate in high dose group was significantly higher than control group(P<0.05).The positive expression rates of Bel-2 and Bax in all groups showed statistically significant difference(P<0.05),while expression of cleaved caspase-3 and cleaved caspase-9 in 5 groups was significantly different,with dose-dependent 展开更多
关键词 Lung cancer Qi deficiency and blood STASIS Lung-to
Is there a role for B lymphocyte chimerism in the monitoring of B-acute lymphoblastic leukemia patients receiving allogeneic stem cell transplantation?
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作者 Yi-Ning Yang Xiao-Rui Wang +3 位作者 You-Wen Qin Li-Ping Wan Ying Jiang Chun Wang 《慢性疾病与转化医学:英文版》 2015年第1期共7页
The prognostic value of serum C-reactive protein-bound serum amyloid A in early-stage lung cancer 预览
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作者 Xue-Yan Zhang Ge Zhang +6 位作者 Ying Jiang Dan Liu Man-Zhi Li Qian Zhong Shan-Qi Zeng Wan-Li Liu Mu-ShengZeng 《癌症:英文版》 SCIE CAS CSCD 2015年第8期335-349,共15页
Background:Elevated levels of serum C-reactive protein(CRP) have been reported to have prognostic significance in lung cancer patients.This study aimed to further identify CRP-bound components as prognostic markers fo... Background:Elevated levels of serum C-reactive protein(CRP) have been reported to have prognostic significance in lung cancer patients.This study aimed to further identify CRP-bound components as prognostic markers for lung cancer and validate their prognostic value.Methods:CRP-bound components obtained from the serum samples from lung cancer patients or healthy controls were analyzed by differential proteomics analysis.CRP-bound serum amyloid A(CRP-SAA) was evaluated by coimmunoprecipitation(IP).Serum samples from two independent cohorts with lung cancer(retrospective cohort,242patients;prospective cohort,222 patients) and healthy controls(159 subjects) were used to evaluate the prognostic value of CRP-SAA by enzyme-linked immunosorbent assay.Results:CRP-SAA was identified specifically in serum samples from lung cancer patients by proteomic analysis.CRP binding to SAA was confirmed by co-IP in serum samples from lung cancer patients and cell culture media.The level of CRP-SAA was significantly higher in patients than in healthy controls(0.37 ± 0.58 vs.0.03 ± 0.04,P < 0.001).Elevated CRP-SAA levels were significantly associated with severe clinical features of lung cancer.The elevation of CRPSAA was associated with lower survival rates for both the retrospective(hazard ration[HR]= 2.181,95%confidence interval[CI]= 1.641-2.897,P < 0.001) and the prospective cohorts(HR = 2.744,95%CI = 1.810-4.161,P < 0.001).Multivariate Cox analysis showed that CRP-SAA was an independent prognostic marker for lung cancer.Remarkably,in stages l-ll patients,only CRP-SAA,not total SAA or CRP,showed significant association with overall survival in two cohorts.Moreover,univariate and multivariate Cox analyses also showed that only CRP-SAA could be used as an independent prognostic marker for early-stage lung cancer patients.Conclusion:CRP-SAA could be a better prognostic marker for lung cancer than total SAA or CRP,especially in earlystage patients. 展开更多
关键词 C反应蛋白 血清样品 肺癌 预后 价值 早期 结合物 酶联免疫吸附试验
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汉麻组织培养的初步研究 预览
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作者 姜颖 夏尊民 +2 位作者 唐艳 韩强 韩承伟 《农业科学与技术:英文版》 CAS 2015年第5期923-925,共3页
以汉麻新品种"龙麻一号"的茎节为初始材料,研究了汉麻组织培养中的关键因素如无菌苗的获得及其生理状态、植物生长调节剂的选择及其浓度等。选用MS作为基本培养基;种子消毒用75%乙醇浸泡2 min后,再用1‰的升汞溶液(Hg Cl2)浸泡处理5... 以汉麻新品种"龙麻一号"的茎节为初始材料,研究了汉麻组织培养中的关键因素如无菌苗的获得及其生理状态、植物生长调节剂的选择及其浓度等。选用MS作为基本培养基;种子消毒用75%乙醇浸泡2 min后,再用1‰的升汞溶液(Hg Cl2)浸泡处理5 min;愈伤组织诱导的最适植物生长调节剂组合为1.0mg/L 6-BA和0.5mg/L NAA;不定芽分化的最适激素组合为1.0 mg/L KT和0.5 mg/L NAA。 展开更多
关键词 汉麻 组织培养 无菌苗 激素
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基于大病医保的先天性心脏病患儿临床特征比较分析 预览 被引量:2
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作者 蒋英 周亮 《中国现代医学杂志》 CAS 北大核心 2015年第27期59-62,共4页
目的分析大病医保政策实施前后湖南省儿童先天性心脏病的临床特征,为制定相关卫生政策提供数据参考。方法采用描述性研究方法,收集整理并分析1 267例2009年1月1日~2012年12月31日在中南大学湘雅医院就诊的儿童先天性心脏病患者临床资料... 目的分析大病医保政策实施前后湖南省儿童先天性心脏病的临床特征,为制定相关卫生政策提供数据参考。方法采用描述性研究方法,收集整理并分析1 267例2009年1月1日~2012年12月31日在中南大学湘雅医院就诊的儿童先天性心脏病患者临床资料。结果 1 267例患者中,大病医保政策实施前就诊的患儿334例,实施后就诊的患者933例;男童653例,女童614例;诊断年龄〉3岁702例,≤3岁565例,范围为0~14岁;城区患儿230例,农村患儿1 037例;主要诊断为室间隔缺损892例,房间隔缺损231例,法洛氏四联症76例,其他诊断为68例;有术后并发症的患儿179例,无并发症者为1 088例;治愈1 248例,死亡19例。尚未发现大病医保实施前后患儿存在性别、年龄、疾病种类和疗效差异(χ2=0.242,3.199,7.962,2.492,P=0.622,0.074,0.241,0.114);大病医保实施后,农村患儿明显增多(χ2=10.266,P=0.001),但有术后并发症的患儿也明显增多(χ2=9.900,P=0.002)。结论大病医保政策让更多的农村地区先天性心脏病患儿受益。大病医保政策实施后,患儿术后并发症发生率有所增加,原因有待进一步研究。 展开更多
关键词 大病医保 儿童 先天性心脏病 临床特征
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核壳粒子特性对其增韧PBT/PC共混物性能的影响 预览 被引量:3
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作者 张晳娜 姜英 +1 位作者 毕野 孙树林 《高分子材料科学与工程》 EI CAS CSCD 北大核心 2014年第9期10-14,共5页
调节叔十二烷基硫醇(TDDM)用量合成了以聚丁二烯(PB)为核,苯乙烯-丙烯腈-甲基丙烯酸环氧丙酯共聚物为壳的核壳粒子ABS-g-GMA。接枝特性测试发现TDDM降低了核壳粒子的接枝率和接枝效率。动态力学热分析结果表明TDDM降低了PB相交联程度,... 调节叔十二烷基硫醇(TDDM)用量合成了以聚丁二烯(PB)为核,苯乙烯-丙烯腈-甲基丙烯酸环氧丙酯共聚物为壳的核壳粒子ABS-g-GMA。接枝特性测试发现TDDM降低了核壳粒子的接枝率和接枝效率。动态力学热分析结果表明TDDM降低了PB相交联程度,提高了PB空洞化能力。随着TDDM用量增加,ABS-g-GMA屈服应变降低,断裂伸长率提高。透射电镜发现TDDM加入对ABS-g-GMA在聚对苯二甲酸丁二醇酯(PBT)与聚碳酸酯(PC)共混物基体中的分散形态没有不利影响。力学测试表明ABS-g-GMA粒子对PBT/PC共混物具有良好的增韧作用。TDDM对ABS-g-GMA增韧PBT/PC有积极作用,能使共混物冲击韧性和断裂强度得到提高。 展开更多
关键词 聚碳酸酯 聚对苯二甲酸丁二醇酯 核壳粒子 增韧
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两种小梁切除术治疗原发性青光眼疗效对比研究 预览 被引量:11
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作者 王静 蒋莹 +2 位作者 文玉民 揭静 秦琴 《国际眼科杂志》 CAS 2014年第5期819-821,共3页
目的:对比分析两种小梁切除术对青光眼的疗效。 方法:将我院选择2006-05/2011-09青光眼患者300例384眼随机分为观察组160例200眼与对照组140例184眼,分别行复合式小梁切除术及传统小梁切除术,比较两组手术疗效,并随访1a。 结果:所有... 目的:对比分析两种小梁切除术对青光眼的疗效。 方法:将我院选择2006-05/2011-09青光眼患者300例384眼随机分为观察组160例200眼与对照组140例184眼,分别行复合式小梁切除术及传统小梁切除术,比较两组手术疗效,并随访1a。 结果:所有手术均顺利完成。术后1 wk观察组(复合式小梁切除术)和对照组(传统小梁切除术)浅前房发生率分别为7.5%和21.7%差异有统计学意义(P〈0.05)。术后1a观察组手术成功率为90.0%明显高与对照组的65.2%(P〈0.05);术后1a,观察组和对照组功能性滤泡形成率分别为86.0%和63.0%,经比较差异有统计意义(P〈0.05);观察组术后并发症发生率明显低于对照组(P〈0.05)。 结论:复合式小梁切除术较传统小梁切除术治疗青光眼疗效确切,能有效减少术后浅前房的发生,功能性滤过泡形成和远期手术成功率方面疗效显著,且并发症低,适用于临床推广。 展开更多
关键词 青光眼 复合式小梁切除术 浅前房 功能性滤过泡
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丙烯腈含量对PVDF/SAN共混物性能的影响 预览
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作者 姜英 张晳娜 +1 位作者 毕野 孙树林 《高分子材料科学与工程》 EI CAS CSCD 北大核心 2014年第9期55-58,共4页
采用乳液聚合方法制备了一系列不同丙烯腈(AN)含量的苯乙烯-丙烯腈共聚物(SAN),将其与聚偏氟乙烯(PVDF)共混,考察了AN含量对PVDF/SAN共混物性能的影响。动态力学热分析结果表明,随着AN含量增加,PVDF的Tg向高温移动,PVDF与SAN的相容性提... 采用乳液聚合方法制备了一系列不同丙烯腈(AN)含量的苯乙烯-丙烯腈共聚物(SAN),将其与聚偏氟乙烯(PVDF)共混,考察了AN含量对PVDF/SAN共混物性能的影响。动态力学热分析结果表明,随着AN含量增加,PVDF的Tg向高温移动,PVDF与SAN的相容性提高。X射线衍射仪测试得出PVDF结晶为α晶型,不同AN含量的SAN对PVDF的晶型没有影响。差示扫描量热分析发现PVDF及其共混物中,PVDF具有双重熔融行为。随着AN含量增加,PVDF结晶温度向低温方向有所移动,结晶能力降低。扭矩测试发现,PVDF具有较高的黏度,SAN的引入降低了PVDF的黏度。接触角结果表明SAN提高了PVDF的表面亲水性,AN含量越高,共混物极性越大,材料表面亲水性越强。 展开更多
关键词 聚偏氟乙烯 苯乙烯-丙烯腈共聚物 共混 结构 性能
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Recurrent abdominal liposarcoma: Analysis of 19 cases and prognostic factors 预览
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作者 Wei Lu James Lau +6 位作者 Mei-Dong Xu Yong Zhang Ying Jiang Han-Xing Tong Juan Zhu Wei-Qi Lu Xin-Yu Qin 《世界胃肠病学杂志:英文版(电子版)》 SCIE CAS 2013年第25期4045-4052,共8页
AIM: To evaluate the clinical outcome of re-operation for recurrent abdominal liposarcoma following multidis-ciplinary team cooperation. METHODS: Nineteen consecutive patients who had re-current abdominal liposarcoma... AIM: To evaluate the clinical outcome of re-operation for recurrent abdominal liposarcoma following multidis-ciplinary team cooperation. METHODS: Nineteen consecutive patients who had re-current abdominal liposarcoma underwent re-operation by the retroperitoneal sarcoma team at our institution from May 2009 to January 2012. Patient demographic and clinical data were reviewed retrospectively. Multidisciplinary team discussions were held prior to treatment, and re-operation was deemed the best treatment. The categories of the extent of resection were as follows: gross total resection (GTR), palliative resection and partial resection. Surgical techniques were divided into discrete lesion resection and combined contiguous multivisceral resection (CMR). Tumor size was determined as the largest diameter of the specimen. Patients were followed up at approximately 3-monthly intervals. For survival analysis, a univariate analysis was performed using the Kaplan-Meier method, and a multivariate analysis was performed using the Cox pro-portional hazards model. RESULTS: Nineteen patients with recurrent abdominal liposarcoma (RAL) underwent 32 re-operations at our institute. A total of 51 operations were reviewed with a total follow-up time ranging from 4 to 120 (47.4 ± 34.2) mo. The GTR rate in the CMR group was higher than that in the non-CMR group (P = 0.034). CMR was positively correlated with intra-operative bleeding (correlation coefficient = 0.514, P = 0.010). Six cases with severe postoperative complications were recorded. Patients with tumor sizes greater than 20 cm carried a significant risk of profuse intra-operative bleeding (P = 0.009). The ratio of a highly malignant subtype (de-differentiated or pleomorphic) in recurrent cases was higher compared to primary cases (P = 0.027). Both single-factor survival using the Kaplan-Meier model and multivariate analysis using the Cox proportional hazards model showed that overall survival was corre-lated with resection extent and pathological subtype (P 【 0.001 and P = 展开更多
关键词 Overall survival RECURRENT ABDOMINAL lipo-sarcoma Relapse-free interval
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Evaluation of the seismic moment of the April 20, 2013 Lushan earthquake
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作者 Xiaogang Hu Ying Jiang 《地震学报:英文版》 2013年第3期169-177,共9页
The April 20,2013 Lushan earthquake which occurred in Sichuan,China had only moderate thrust.However,the computed seismic moments(M0)for the Lushan earthquake calculated by several institutions differ significantly fr... The April 20,2013 Lushan earthquake which occurred in Sichuan,China had only moderate thrust.However,the computed seismic moments(M0)for the Lushan earthquake calculated by several institutions differ significantly from 0.4 9 1019to 1.69 9 1019Nm,up to four times difference.We evaluate ten computed M0s by using normal mode observations from superconducting gravimeters in Mainland China.We compute synthetic normal modes on the basis of moment tensor solutions and fit them to the observed normal modes.Comparison of our results indicates that M0is the main cause for some large differences between observations and synthetics.We suggest that a moment magnitude of Mw6.6,corresponding to a M0of 0.97–1.08 9 1019Nm,characterizes the size and strength of the seismic source of the Lushan earthquake. 展开更多
关键词 地震矩 大地震 庐山 评价 中国大陆 正常模 计算 重力仪
Effects of Benzo(a)pyrene on the Contractile Function of the Thoracic Aorta of Sprague-dawley Rats 预览
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作者 GAN Tie Er XIAO Su Ping +5 位作者 JIANG Ying HU Hu WU Yi Hua DUERKSEN-HUGHES Penelope J SHENG Jian Zhong YANG Jun 《生物医学与环境科学:英文版》 SCIE CAS CSCD 2012年第5期549-556,共8页
目的将评估一个环境致癌物 benzo (a) 分核(BaP ) 的可能的脉管的效果。BaP 和老鼠肝 S9 (0.25 mg/mL ) 的 cytotoxicit 激活 BaP 的方法被 MTT 试金检验。胸的大动脉的戒指从 Sprague-Dawley 老鼠被把。大动脉的戒指的收缩被 60 mmol/L... 目的将评估一个环境致癌物 benzo (a) 分核(BaP ) 的可能的脉管的效果。BaP 和老鼠肝 S9 (0.25 mg/mL ) 的 cytotoxicit 激活 BaP 的方法被 MTT 试金检验。胸的大动脉的戒指从 Sprague-Dawley 老鼠被把。大动脉的戒指的收缩被 60 mmol/L KCl 或 106 mol/L phenylephrine (PE ) 在 BaP (100 mol/L ) 以后在一个 ex-vivo 灌注系统导致为 6 h 的孵化。[Ca2+] 我用 Fluo-4/AM 被测量。为 in-vivo 处理,老鼠与 BaP 被注射 4 个星期(10 mg/kg,每周 i.p ) 。结果 BaP (1500 m ) 显著地没影响房间生存能力;激活 S9 的 BaP 刺激了房间增长。BaP 没影响内皮细胞层未经触动或剥光的大动脉的戒指的可收缩的功能。BaP 没影响导致 ATP ([Ca2+] 我) 人的脐的静脉 endothelial 房间的增加。在对待 BaP 的老鼠,心率和传播煽动性的房间的数字没被影响。当血压显著地增加了时,身体重量减少了。对 PE 和 KCl 的最大的大动脉的可收缩的回答和对醋胆素的最大的大动脉的松驰反应被 25.0% , 34.2% ,和 10.4% 显著地分别地减少。这些结果建议的结论根据它的损坏 DNA 性质,那新陈代谢的激活是为导致 BaP 的心血管的毒性的一个前提。 展开更多
关键词 苯并(A)芘 SD大鼠 收缩功能 主动脉 人脐静脉内皮细胞 苯并(A)芘 诱导浓度 细胞活力
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中国“走出去”企业全球化税务管理的基本思路 被引量:1
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作者 蒋颖 张新华 +2 位作者 卢强 叶永青 石红霞 《涉外税务》 北大核心 2012年第4期 36-40,共5页
以“走出去”发展战略为引导,许多中国企业,尤其是实力雄厚的大型企业开始积极对外投资,但这一过程面临着复杂的国际税务风险。针对在境外投资过程中遇到的各种税务风险,本文提出了“走出去”企业的全球税务管理的基本思路:了解并... 以“走出去”发展战略为引导,许多中国企业,尤其是实力雄厚的大型企业开始积极对外投资,但这一过程面临着复杂的国际税务风险。针对在境外投资过程中遇到的各种税务风险,本文提出了“走出去”企业的全球税务管理的基本思路:了解并合理使用所得税抵免制度避免双重征税;通过投资架构和交易安排降低企业整体税负;通过建立有效的税务管理体系控制风险。 展开更多
关键词 对外投资 税务风险 避免双重征税 投资构架 交易安排
Synthesis and polarized photoluminescence of novel phosphorescent cyclometalated platinum dimer
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作者 Shi Ping Jiang Kai Jun Luo +2 位作者 Ying Han Wang Xin Wang Ying Jiang 《中国化学快报:英文版》 SCIE CAS CSCD 2011年第8期1005-1008,共4页
与二度更暗淡的新奇发磷光的 cyclometalated 铂 --[2-(p-dodecyloxyphenyl ) pyridyl ]-hexane-1,6-diol 作为 ligand 和 1,3-(1-n-hexyl,3-n-heptadecyl ) , diketone 作为辅助 ligand 被综合。化学结构和液体水晶性质更暗淡被 1H NM... 与二度更暗淡的新奇发磷光的 cyclometalated 铂 --[2-(p-dodecyloxyphenyl ) pyridyl ]-hexane-1,6-diol 作为 ligand 和 1,3-(1-n-hexyl,3-n-heptadecyl ) , diketone 作为辅助 ligand 被综合。化学结构和液体水晶性质更暗淡被 1H NMR, ESIMS,极化的光显微镜学(POM ) 和微分扫描热量测定(DSC ) 描绘。磨擦 polyimide 电影上的标题化合物的排列电影在有在 516 nm 最大的排放的房间温度是强烈地放射性的。光在 516 nm 的二色性的比率(I/I ) 是 3.1。 展开更多
关键词 二聚体 合成 金属 磷光 光偏振 聚酰亚胺薄膜 光致 光环
Is Global Strong Wind Declining? 预览
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作者 Zongci Zhao Yong Luo Ying Jiang 《气候变化研究进展:英文版》 2011年第4期 225-228,共4页
1 Introduction To mitigate global warming,the call for using clean energy,developing low-carbon economy and initiating green environmental protection has never been louder.One of the hot topics,which has received wide... 1 Introduction To mitigate global warming,the call for using clean energy,developing low-carbon economy and initiating green environmental protection has never been louder.One of the hot topics,which has received widespread attentions in the world,is the development and utilization of wind energy.At the same time,some of the climate change studies focus on the changes in global wind speeds and strong winds which are related to wind energy utilization.The issues,which are the subjects of these studies,can be summarized in the following. 展开更多
关键词 强风 衰退 风能利用 全球变暖 清洁能源 绿色环保 气候变化 INI
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