期刊文献+
共找到7篇文章
< 1 >
每页显示 20 50 100
苯乙酮双缩硫代对称二氨基脲与ZnCl_2、NiAc_2、CoAc_2配合物及其抗癌活性研究 被引量:3
1
作者 刘建宁 董彦杰 于新桥 《化学世界》 CAS CSCD 2000年第8期412-414,共3页
合成了苯乙酮双缩硫代对称二氨基脲 ( HL)及其与 Zn Cl2 、Ni Ac2 、Co Ac2 的配合物 ,通过元素分析、红外光谱、紫外光谱、磁化率、摩尔电导等对配体和配合物进行了表征。测试了配体和配合物的抗癌活性。
关键词 配合物 ZNCL2 niac2 CoAc2 抗癌活性 HL
下载PDF
DARPA以及NIAC创新机制及启示
2
作者 侯宇葵 梁巍 彭涛 《卫星应用》 2007年第3期55-65,共11页
建设创新型国家是我国未来相当长一段时期内的重大战略目标,航天技术是一个国家的战略性高技术,航天技术创新是一个国家创新能力的重要体现。DARPA以及NIAC(NASA先进概念研究所)是美国军方以及民用航天具有独特特点的两个创新技术... 建设创新型国家是我国未来相当长一段时期内的重大战略目标,航天技术是一个国家的战略性高技术,航天技术创新是一个国家创新能力的重要体现。DARPA以及NIAC(NASA先进概念研究所)是美国军方以及民用航天具有独特特点的两个创新技术、概念研究机构,通过对DARPA以及NIAC创新机制的分析,提出几点促进我国航天技术创新发展的启示。 展开更多
关键词 科技创新 DARPA niac 航天技术
下载PDF
NIAC孕育太空梦想的摇篮
3
作者 张华祝 《国外科技动态》 2003年第1期40-41,共2页
美国航空航天局辖下,有一个名为NASA先进概念研究所(简称NIAC)的单位。这里主要负责对远期的、概念性的太空研究项目进行资助,这些看似“荒诞离奇”的项目中较成熟、合理的部分会被NASA接管以继续进行深入研究甚至列入太空计划。从某种... 美国航空航天局辖下,有一个名为NASA先进概念研究所(简称NIAC)的单位。这里主要负责对远期的、概念性的太空研究项目进行资助,这些看似“荒诞离奇”的项目中较成熟、合理的部分会被NASA接管以继续进行深入研究甚至列入太空计划。从某种角度来说,NIAC就是NASA的航天研究孵化器。 展开更多
关键词 NASA先进概念研究所 航天研究 niac 孵化器
下载PDF
Usefulness of staging systems and prognostic scores for hepatocellular carcinoma treatments 被引量:7
4
作者 Xavier Adhoute Guillaume Penaranda +6 位作者 Jean Luc Raoul Patrice Le Treut Emilie Bollon Jean Hardwigsen Paul Castellani Hervé Perrier Marc Bourlière 《World Journal of Hepatology》 2016年第17期703-715,共13页
Therapeutic management of hepatocellular carcinoma(HCC) is quite complex owing to the underlying cirrhosis and portal vein hypertension. Different scores or classification systems based on liver function and tumoral s... Therapeutic management of hepatocellular carcinoma(HCC) is quite complex owing to the underlying cirrhosis and portal vein hypertension. Different scores or classification systems based on liver function and tumoral stages have been published in the recent years. If none of them is currently "universally" recognized, the Barcelona Clinic Liver Cancer(BCLC) staging system has become the reference classification system in Western countries. Based on a robust treatment algorithm associated with stage stratification, it relies on a high level of evidence. However, BCLC stage B and C HCC include a broad spectrum of tumors but are only matched with a single therapeutic option. Some experts have thus suggested to extend the indications for surgery or for transarterial chemoembolization. In clinical practice, many patients are already treated beyond the scope of recommendations. Additional alternative prognostic scores that could be applied to any therapeutic modality have been recently proposed. They could represent complementary tools to the BCLC staging system and improve the stratification of HCC patients enrolled in clinical trials, as illustrated by the NIACE score. Prospective studies are needed to compare these scores and refine their role in the decision making process. 展开更多
关键词 Scoring system Hepatocellular carcinoma Barcelona Clinic Liver Cancer staging system niacE Transarterial chemoembolization
下载PDF
Barcelona clinic liver cancer nomogram and others staging/scoring systems in a French hepatocellular carcinoma cohort 被引量:1
5
作者 Xavier Adhoute Guillaume Pénaranda +13 位作者 Jean Luc Raoul Julien Edeline Jean-Frédéric Blanc Bernard Pol Manuela Campanile HervéPerrierO livier Bayle Olivier Monnet Patrick Beaurain Cyril Muller Paul Castellani Yves Patrice Le Treut Jean Pierre Bronowicki Marc Bourlière 《World Journal of Gastroenterology》 SCIE CAS 2017年第14期2545-2555,共11页
AIM To compare the performances of the Barcelona clinic liver cancer(BCLC) nomogram and others systems(BCLC, HKLC, CLIP, NIACE) for survival prediction in a large hepatocellular carcinoma(HCC) French cohort.METHODS Da... AIM To compare the performances of the Barcelona clinic liver cancer(BCLC) nomogram and others systems(BCLC, HKLC, CLIP, NIACE) for survival prediction in a large hepatocellular carcinoma(HCC) French cohort.METHODS Data were collected retrospectively from 01/2007 to 12/2013 in five French centers. Newly diagnosed HCC patients were analyzed. The discriminatory ability, homogeneity ability, prognostic stratification ability Akaike information criterion(AIC) and C-index were compared among scoring systems. RESULTS The cohort included 1102 patients, mostly men, median age 68 [60-74] years with cirrhosis(81%), child-Pugh A(73%), alcohol-related(41%), HCV-related(27%). HCC were multinodular(59%) and vascular invasion was present in 41% of cases. At time of HCC diagnosis BCLC stages were A(17%), B(16%), C(60%) and D(7%). First line HCC treatment was curative in 23.5%, palliative in 59.5%, BSC in 17% of our population. Median OS was 10.8 mo [4.9-28.0]. Each system distinguished different survival prognosis groups(P < 0.0001). The nomogram had the highest discriminatory ability, the highest C-index value. NIACE score had the lowest AIC value. The nomogram distinguished sixteen different prognosis groups. By classifying unifocal large HCC into tumor burden 1, the nomogram was less powerful. CONCLUSION In this French cohort, the BCLC nomogram and the NIACE score provided the best prognostic information, but the NIACE could even help treatment strategies. 展开更多
关键词 Barcelona clinical liver cancer Hong kong liver cancer niacE CLIP Hepatocellular carcinoma
下载PDF
Usefulness of the MESH score in a European hepatocellular carcinoma cohort
6
作者 Xavier Adhoute Guillaume Pénaranda +1 位作者 Jean-Luc Raoul Marc Bourlière 《World Journal of Hepatology》 2017年第15期711-714,共4页
The Barcelona Clinic Liver Cancer classification is the most widely-used hepatocellular carcinoma(HCC) staging system because it is simple,precise and linked to a treatment algorithm based on randomized studies.But ea... The Barcelona Clinic Liver Cancer classification is the most widely-used hepatocellular carcinoma(HCC) staging system because it is simple,precise and linked to a treatment algorithm based on randomized studies.But each group includes a broad spectrum of tumors,with limited therapeutic options,particularly for intermediate and advanced stages.Consequently,different additional scoring systems have been proposed to refine the prognosis and/or to improve the management.But until now,there is no consensus.Liu et al proposes a new scoring system,based on a large HCC cohort,with patients at different stages,treated using diverse modalities.This score includes six parameters used in current practice.It is simple to calculate,reliable,with an ability to predict survival superior to other systems,which also works with our European HCC cohort.The MESH score may be especially useful to differentiate subgroups with different prognosis for each treatment modality. 展开更多
关键词 Hepatocellular carcinoma Barcelona Clinic Liver Cancer Scoring system MESH niacE
下载PDF
计算机发展简史 被引量:1
7
作者 孙金友 《学周刊(上旬)》 2014年第5期234-234,共1页
当今世界,科学技术日新月异,特别是信息技术的迅猛发展极大地改变了我们的生活,这其中以计算机技术的发展所带来的影响最为明显。从第一台计算机ENIAC的诞生到现在已有60多个春秋,这在人类文明的历史长河中只是短暂的一瞬间,然而计算机... 当今世界,科学技术日新月异,特别是信息技术的迅猛发展极大地改变了我们的生活,这其中以计算机技术的发展所带来的影响最为明显。从第一台计算机ENIAC的诞生到现在已有60多个春秋,这在人类文明的历史长河中只是短暂的一瞬间,然而计算机却极大地改变了我们的生产和生活,并将继续深刻地影响人类社会的发展。本文回顾计算机发展的历史,追溯它的起源,并浅显地探讨其发展趋势。 展开更多
关键词 计算机 二进制 冯·诺依曼 E—niac 元器件 发展趋势
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部