153 research outputs found
The Study of Pre-establishment National Treatment and Negative List
目前国际上有一些国家在国际投资条约中采用负面清单的模式来规定准入前国民待遇的例外,中国和美国双边投资条约的谈判也是以这种模式为基础。国际上也有少数国家在国内立法层面确立准入前国民待遇的负面清单,我国商务部草拟的《外国投资法》也将采用国内立法的形式确立负面清单的内容,因此,对于准入前国民待遇和负面清单的研究对我国的立法与实践有着重大的参考价值。 本文将围绕准入前国民待遇和负面清单这一主题,从四个方面展开论述。本文的第一章阐释了准入前国民待遇的内涵、适用的阶段,主要包括投资准入阶段和经营管理阶段。同时,简要介绍了负面清单的含义和特点,并指出负面清单的本质应该是一种例外。在第二章中,本文将分析国际...Nowadays, there are many countries which enact the non-conforming measures of national treatment in negative list of the international investment treaties . The US-China Bilateral Investment Treaty is also based on pre-establishment national treatment and negative list. At the same time, there are some countries which enact the non-conforming measures of national treatment in negative list of nati...学位:法律硕士院系专业:法学院_法律硕士学号:1302013115026
Influence of different blood Glu cose control programs on prognosis and blood Glu cose in patients with intracerebral hemorrhage after operation together with stress hyperglycemia
目的 探讨不同血糖控制方案对脑出血术后应激性高血糖患者预后及血糖的影响。方法 采用回顾性研究方法将2015年6月~2016年5月入住我院重症医学科的52例脑出血术后应激性高血糖患者根据血糖控制方案的不同分为A组(n=25)和B组(n=27),A组采用静脉单次推注,B组采用持续静脉泵注。比较两组的28 d生存率、格拉斯哥预后评分、血糖达标率、达标时间、血糖监测次数、低血糖发生率、血糖水平和血糖变异度指标的差异。结果 两组的28 d生存率、血糖达标率、达标时间、低血糖发生率比较,差异无统计学意义(P〉0.05)。A组的格拉斯哥预后评分显著高于B组,差异有统计学意义(P〈0.05)。A组的血糖监测次数显著少于B组,差异有统计学意义(P〈0.05)。A组的血糖最大值(Glu_(max))和血糖差值(Glu_(dif))均显著小于B组,差异有统计学意义(P〈0.05)。结论静脉单次推注胰岛素能够改善脑出血术后应激性高血糖患者的神经功能预后,可以降低入ICU后血糖最大值和血糖差异。Objective To investigate influence of different blood glucose control programs on prognosis and blood glucose in patients with intracerebral hemorrhage after operation together with stress hyperglycemia.Methods A retrospective study was conducted,and 52 patients with stress hyperglycemia after cerebral hemorrhage in our hospital from June 2015 to May 2016 were divided into group A (n=25) and group B (n=27) according to different blood glucose control programs.Group A was treated with intravenous bolus injection,and group B was treated with continuous intravenous pump.The 28 d survival rate,the Glasgow outcome score,the blood glucose compliance rate,the standard time,the fre- quency of blood glucose monitoring,the incidence rate of hypoglycemia,blood glucose levels and blood glucose variabili- ty indexes were compared between the two groups.Results There was no significant difference in 28 d survival rate,the blood glucose compliance rate,the standard time,the incidence rate of hypoglycemia between the two groups (P〉0.05). The Glasgow outcome score in group A was significantly higher than that in group B,with significant difference (P〈 0.05).The number of blood glucose monitoring in group A was significantly less than that in group B,with significant dif- ference (P〈0.05).The Glu., and Glu~f in group A was significantly less than that in group B,with significant difference (P〈O.O5).Conclusion Intravenous single bolus insulin injection can improve the prognosis of nervous function in pa- tients with intracerebral hemorrhage after operation together with stress hyperglycemia,and can reduce the maximum blood glucose and blood glucose difference after ICU.广东省东莞市医疗卫生类科技计划一般项目(2015105101220
Analysis of recombinant human endostatin injection off label use in 120 inpatients in our hospital
目的:分析某院住院患者恩度用药医嘱的合理性,促进临床合理用药。方法:收集2016年1月-2016年12月期间出院的住院患者的恩度用药医嘱,将患者诊断、用法用量与恩度药品说明书进行对比分析,统计超药品说明书情况。结果:120例使用恩度的患者中,男性多于女性,超说明书适应证医嘱24条,占20.00%,超说明书用法用量医嘱117条,占97.50%;有1例发生不良反应,表现为发热。结论:恩度超药品说明书较为普遍,需要设计合理、大样本的随机对照双盲研究提供依据支持
纤维复合材料后微屈曲的理论和实验
后微屈曲是单向纤维复合材料和层状复合材料压缩破坏过程的基本特征。结合Kevlar 49增强648/BF_3·400(脆性环氧)和EP(韧性环氧)基复合材料对后微屈曲的折带扩展进行理论分析和实验研究。理论预测与实验结果达到定性、定量符合;实验展现出扩展折带模式的微屈曲特征
扩散峰度成像鉴别直肠癌区域淋巴结良恶性的初步探讨
目的采用扩散峰度成像(DKI)定量参数评价直肠癌区域淋巴结,探究各参数鉴别良恶性淋巴结的临床应用价值。方法收集中山大学附属第一医院2015年1月至2016年8月行术前DKI扫描且未经新辅助治疗行直肠癌根治术患者116例,纳入术前DKI与术后病理相对应淋巴结285枚(阳性104枚,阴性181枚),测量各淋巴结短径(S),测算各淋巴结弥散定量参数,包括表观扩散系数(ADC)、平均峰度系数(MK)、平均扩散系数(MD)。比较分析良恶性淋巴结各相关参数,并以S=5.5 mm为界值,进一步分组比较不同短径良恶性淋巴结各定量参数;绘制相关定量参数的ROC曲线,获取诊断界值。结果转移淋巴结的S、ADC、MD高于非转移淋巴结(P<0.05),MK则低于非转移淋巴结(P<0.01),MK鉴别良恶性淋巴结的诊断界值(曲线下面积,敏感度,特异度)为 1.150(0.634,80.77%,45.86%)。分组分析显示,当 S≥5.5 mm 时,转移淋巴结的MK低于非转移淋巴结(P=0.037),其诊断界值(曲线下面积,敏感度,特异度)为1.213(0.604,87.50%,36.51%),而两组间S、ADC、MD差异无统计学意义(P>0.05)。当S<5.5 mm时,转移淋巴结ADC、MD值高于非转移淋巴结,而MK低于非转移淋巴结(P<0.05),其诊断界值(曲线下面积, 敏感度,特异度)为1.108(0.655,81.25%,55.93%),而两组间S值则差异无统计学意义(P=0.097)。结论DKI定量参数MK可用于鉴别直肠癌区域淋巴结的良恶性,S联合MK可以进一步提高定性诊断的准确性
腹腔注射四氢姜黄素对卵清蛋白诱导过敏性哮喘小鼠的治疗作用
目的探讨腹腔注射四氢姜黄素(THC)对过敏性哮喘小鼠呼吸道症状和炎症反应的治疗效果。方法BALB/c小鼠随机分为4组,包括:正常对照组、卵清蛋白(OVA)诱导动物模型组、阳性对照组和THC治疗组。其中,阳性对照组和THC治疗组小鼠于实验第21 ~ 25天,分别经腹腔注射2.5 mg/kg 地塞米松(DEX)或20 mg/kg THC。记录小鼠激发前后体质量变化和挠鼻情况,实验结束后处死小鼠,采集肺组织和肺泡灌洗液(BALF)评估组织病理改变、检测T细胞亚型及相关细胞因子水平。结果哮喘小鼠经THC腹腔注射治疗后挠鼻频率降低(P < 0.05),两组均数之差为5.2,其95%置信区间(CI)为0.66~9.74;肺组织病理评分减少(P < 0.05),两组均数之差为1.6,其95%CI为0.32~2.88;杯状细胞增生引起的粘液分泌水平减轻(P < 0.0001),两组均数之差为9.56,其95%CI为5.05~14.07。此外,与OVA组相比,THC治疗组小鼠肺组织Th2、Th17细胞比例减少(P < 0.01,两组均数之差分别为1.492和2.15,其95%CI分别为0.50~2.49和0.72~3.58),BALF中白细胞介素(IL)IL-4、IL-5、IL-13和IL-17A的水平显著降低(P < 0.05),两组均数之差分别为5.45、4.13、5.17和2.44,其95%CI分别为1.95~8.94、1.08~7.19、0.80~9.54和-0.30~5.17。进一步比较发现THC与DEX治疗组间肺组织病理变化、Th17细胞以及IL-13和IL-17A因子水平差异无统计学意义(P > 0.05)。结论腹腔注射THC可以在短时间内有效缓解哮喘小鼠呼吸道症状和抑制炎症反应,且安全性较高,因此可能具有哮喘发作时替代性治疗手段的潜在价值
Co-Ni-W三元系相图的实验测定与热力学计算
本研究采用合金法、电子探针显微分析仪(EPMA)和X射线衍射(XRD)技术,对Co-Ni-W三元系在1 000℃和1 200℃下的等温截面相图进行了实验测定。结合本研究和已报道的相平衡实验信息,基于CALPHAD (Calculation of phase diagrams)方法,对Co-Ni-W三元系相图进行了热力学优化与计算,获得了自洽性良好的热力学参数,计算结果与实验数据取得了良好的一致性。国家重点研发计划(2016YFB0701401)~
OGLE-2019-BLG-1470LABc : another microlensing giant planet in a binary system?
We report the discovery and analysis of a candidate triple-lens single-source (3L1S) microlensing event, OGLE-2019-BLG-1470. This event was first classified as a normal binary-lens single-source (2L1S) event, but a careful 2L1S modelling showed that it needs an additional lens or source to fit the observed data. It is found that the 3L1S model provides the best fit, but the binary-lens binary-source (2L2S) model is only disfavoured by Δχ2 ≃ 18. All of the feasible models include a planet with planet-to-host mass-ratios 10−3 ≲ q ≲ 10−2. A Bayesian analysis based on a Galactic model indicates that the planet is super-Jovian, and the projected host-planet separation is about 3 au. Specifically, for the best-fitting 3L1S model, the two stars have masses of M1=0.57+0.43−0.32M⊙, and M2=0.18+0.15−0.10M⊙ with projected separation of 1.3+0.5−0.5 au, and the planetary mass is M3=2.2+1.8−1.3MJupiter. For the 2L2S model, the masses of the host star and the planet are 0.55+0.44−0.31M⊙ and 4.6+3.7−2.6MJupiter, respectively. By investigating the properties of all known microlensing planets in binary systems, we find that all planets in binary systems published by the KMTNet survey are located inside the resonant caustics range with q ≳ 2 × 10−3, indicating the incompleteness of the KMTNet sample for planets in binary systems. Thus, planets in binary systems cannot be included in the current study of the KMTNet mass-ratio function, and a systematic search for planetary anomalies in KMTNet microlensing light curves of binary systems is needed
煤矿安全生产中工程质量管理的作用问题
近年来,在多方面利好因素的影响下,使得我国综合国力得到了显著的提升,从而推动了社会经济的良好发展。在这种形势下,社会的发展和民众的生活对煤炭资源的需求量在不断的提升,这样就对煤矿生产工作提出了更高的要求。但是在最近的几年时间里,在矿井开采深度的不断加深,使得大量的矿难事故的频频发生,对煤矿生产工作的安全管理工作的发展造成了诸多的阻碍,并且也对民众的人身和财产安全形成了一定的威胁。煤炭生产行业是我国较为重要的基础产业,并且在社会经济发展方面具有非常重要的影响作用,只有保证煤矿安全生产管理工作的整体效率和效果,才能确保社会经济的稳步健康发展。鉴于此,这篇文章主要针对煤矿安全生产中工程质量管理工作展开全面深入的研究分析,希望能够对我国煤矿生产行业的持续发展起到积极的影响作用。</jats:p
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