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Partitioning of heavy metals during municipal solid waste incineration on a laboratory fluid bed furnace

LI Jianxin, YAN Jianhua, CHI Yong

《能源前沿(英文)》 2007年 第1卷 第3期   页码 359-364 doi: 10.1007/s11708-007-0054-2

摘要: The content of heavy metals in the main physical compositions of municipal solid waste (MSW) is analyzed. The effects of temperature, chlorine and water on the partitioning of heavy metals are studied using a laboratory fluidized-bed (FB) furnace with simulated MSW composition. The experimental results show that temperature and chloride content in the feed have significant influence on the volatility of heavy metals, especially those of lower boiling point such as Hg, Cd and Zn. The influence of water is slight.

关键词: partitioning     municipal     volatility     significant influence     temperature    

Erratum to: On the potential of iPhone significant location data to characterize individual mobility

《环境科学与工程前沿(英文)》 2022年 第16卷 第9期 doi: 10.1007/s11783-022-1556-1

Improved local control without elective nodal radiotherapy in patients with unresectable NSCLC treated by 3D-CRT

YANG Kunyu, LIU Li, ZHANG Tao, WU Gang, CAO Fengjun, WANG Jianhua

《医学前沿(英文)》 2007年 第1卷 第4期   页码 381-385 doi: 10.1007/s11684-007-0074-7

摘要: To investigate the influence of prophylactic elective nodal irradiation on the therapeutic results of definitive radiotherapy for patients with stage IIIA or stage IIIB unresectable non-small-cell lung cancer, 55 patients with clinically inoperable advanced non-small-cell lung cancer were studied. After four cycles of induction chemotherapy, the patients were divided into two groups at random. In one group, the elective nodal irradiation was included in clinical tumor volume (CTV) of definitive radiotherapy (ENI group); and in the other group, elective nodal irradiation was not included in CTV (non-ENI group). For the patients in the ENI group, the mean prescription dose for gross tumor volumes was 58.4 Gy, while for the patients in the non-ENI group, it was 65.8 Gy (<0.05). The responsive rates were 45.8% and 74.0% (<0.05), and the rate of the elective nodal failure (ENF) was 4.2% and 11.1%, respectively. Kaplan-Meier analysis showed that the mean local-progression-free survival time was 11.0 and 15.0 months, and one-year local-failure rates were 51.9% and 24.5% (<0.05). The median overall survival time was 13.0 and 15.0 months, respectively ( = 0.084). The one-year survival rates were 55.7% and 72.5%, and two-year survival rates were 0% and 19.9%. There was no significant difference in the occurrences of radiation-associated complications between the two groups. Our results showed that omitting elective nodal irradiation did not result in a high incidence of elective nodal failure. On the contrary, it decreased local failure by increasing prescription doses to the primary diseases and lymphadenopaphy, and thereby it may further prolong the patients survival.

关键词: significant difference     irradiation     unresectable non-small-cell     induction chemotherapy     influence    

On the potential of iPhone significant location data to characterize individual mobility for air pollution

《环境科学与工程前沿(英文)》 2022年 第16卷 第5期 doi: 10.1007/s11783-022-1542-7

摘要:

● We evaluated the accuracy of iPhone data in capturing time-activity patterns.

关键词: Air pollution exposure     Human mobility     iPhone     Significant Location     Smartphone data    

Distinct community assembly processes underlie significant spatiotemporal dynamics of abundant and rare

《环境科学与工程前沿(英文)》 2022年 第16卷 第6期 doi: 10.1007/s11783-021-1513-4

摘要:

• Season and landform influenced spatiotemporal patterns of abundant and rare taxa.

关键词: Rare taxa     Biogeography     Community assembly     Bacterioplankton     The Yangtze River    

Repetitive transcranial magnetic stimulation causes significant changes of chemical substances in the

GUO Tiecheng, CAO Xuebing, XIA Limin

《医学前沿(英文)》 2008年 第2卷 第4期   页码 406-409 doi: 10.1007/s11684-008-0078-y

摘要: More and more studies have reported the usefulness of repetitive transcranial magnetic stimulation (rTMS) in the treatment of stroke patients. This article is to explore if rTMS can cause changes of such chemical substances as N-acetylaspartate (NAA), choline (Cho) and creatine (Cr) in the surrounding area of experimental intracerebral hematoma of rabbits. A total of 36 rabbits were randomly divided into 3 groups: a control group (group A), a sham rTMS group (group B) and an rTMS group (group C). The experimental intracerebral hemorrhage (ICH) was induced by intracerebral injection of self-body blood of the animals in groups B and C, while those of the group A serving as controls were injected with normal saline. The rabbits of groups B and C were treated with sham and real rTMS, respectively, but those of group A were not. The contents of chemical substances including NAA, Cho and Cr in the perihematomal brain tissues were measured by using H-magnetic resonance spectroscopy (H-MRS) 12 hours, 72 hours, 1 week and 2 weeks after the experimental ICH was induced. The results show that the contents of NAA, Cr and NAA/Cr ratio were decreased significantly, but Cho, Cho/Cr increased significantly in groups B and C ( < 0.01) as compared against those in group A. A comparison between the groups B and C revealed that the contents of NAA, Cr, NAA/Cr were higher, but Cho and Cho/Cr were significantly lower in group C than those in group B ( < 0.01). It is concluded that rTMS could result in changes of the chemical substance contents in perihematomal brain tissues, which leads to neuroprotective effects in the brain.

Significant potential of Solid Oxide Fuel Cell systems for distributed power generation and carbon neutrality

《能源前沿(英文)》 2022年 第16卷 第6期   页码 879-882 doi: 10.1007/s11708-022-0850-8

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Identifying spreading influence nodes for social networks

《工程管理前沿(英文)》   页码 520-549 doi: 10.1007/s42524-022-0190-8

摘要: The identification of spreading influence nodes in social networks, which studies how to detect important individuals in human society, has attracted increasing attention from physical and computer science, social science and economics communities. The identification algorithms of spreading influence nodes can be used to evaluate the spreading influence, describe the node’s position, and identify interaction centralities. This review summarizes the recent progress about the identification algorithms of spreading influence nodes from the viewpoint of social networks, emphasizing the contributions from physical perspectives and approaches, including the microstructure-based algorithms, community structure-based algorithms, macrostructure-based algorithms, and machine learning-based algorithms. We introduce diffusion models and performance evaluation metrics, and outline future challenges of the identification of spreading influence nodes.

关键词: complex network     network science     spreading influence     machine learning    

Type 2 diabetic patients with non-alcoholic fatty liver disease exhibit significant haemorheological

Hui Dong, Fu’er Lu, Nan Wang, Xin Zou, Jingjing Rao

《医学前沿(英文)》 2011年 第5卷 第3期   页码 288-293 doi: 10.1007/s11684-011-0127-9

摘要: Haemorheological abnormalities have been described in diabetes mellitus, as well as in non-alcoholic fatty liver disease (NAFLD). However, the relationship between the changes in liver fat content and haemorheology is unknown. The current study aims to show the correlation between haemorheological parameters and intrahepatic lipid content (IHLC) in patients with type 2 diabetes. The serum biochemical markers, such as fasting plasma glucose (FPG), haemoglobin A1c (HbA1c), liver enzymes, lipid profiles, and haemorheological properties, were examined. IHLC was quantified using proton magnetic resonance spectroscopy ( H-MRS) scanning of the liver. A significant correlation was observed between IHLC and whole blood viscosity at high, middle, and low shear rates. IHLC also positively correlated with haematocrit, the reduced whole blood viscosity at low and middle shear rates, and the erythrocyte aggregation index. Diabetic patients with NAFLD exhibited significant haemorheological abnormalities compared with patients without NAFLD. In summary, haemorheological disorders are linked to non-alcoholic fatty liver in type 2 diabetes.

关键词: diabetes mellitus     type 2     haemorheology     non-alcoholic fatty liver disease    

重大建设工程技术创新网络形成机理与运行机制分析

王孟钧,张镇森

《中国工程科学》 2011年 第13卷 第8期   页码 62-66

摘要:

笔者从重大建设工程技术创新的特点和现状分析入手,剖析制约重大建设工程技术创新的核心障碍,建立面向重大建设工程技术创新网络的基本架构,分析其形成起点、演化路径和整合方式,探讨技术创新网络的动力机制、协同机制和学习机制,为建立跨组织协同的新型技术创新模式,提高重大建设工程技术创新效率和水平提供理论依据。

关键词: 重大建设工程     技术创新网络     形成机理     运行机制    

Heterogeneous influence of individuals’ behavior on mask efficacy in gathering environments

《工程管理前沿(英文)》   页码 550-562 doi: 10.1007/s42524-022-0193-5

摘要: Wearing masks is an easy way to operate and popular measure for preventing epidemics. Although masks can slow down the spread of viruses, their efficacy in gathering environments involving heterogeneous person-to-person contacts remains unknown. Therefore, we aim to investigate the epidemic prevention effect of masks in different real-life gathering environments. This study uses four real interpersonal contact datasets to construct four empirical networks to represent four gathering environments. The transmission of COVID-19 is simulated using the Monte Carlo simulation method. The heterogeneity of individuals can cause mask efficacy in a specific gathering environment to be different from the baseline efficacy in general society. Furthermore, the heterogeneity of gathering environments causes the epidemic prevention effect of masks to differ. Wearing masks can greatly reduce the probability of clustered epidemics and the infection scale in primary schools, high schools, and hospitals. However, the use of masks alone in primary schools and hospitals cannot control outbreaks. In high schools with social distancing between classes and in workplaces where the interpersonal contact is relatively sparse, masks can meet the need for prevention. Given the heterogeneity of individual behavior, if individuals who are more active in terms of interpersonal contact are prioritized for mask-wearing, the epidemic prevention effect of masks can be improved. Finally, asymptomatic infection has varying effects on the prevention effect of masks in different environments. The effect can be weakened or eliminated by increasing the usage rate of masks in high schools and workplaces. However, the effect on primary schools and hospitals cannot be weakened. This study contributes to the accurate evaluation of mask efficacy in various gathering environments to provide scientific guidance for epidemic prevention.

关键词: COVID-19     masks     behavioral heterogeneity     asymptomatic infection    

社会影响力分析——模型、方法和评价 Review

李侃, 张林, 黄河燕

《工程(英文)》 2018年 第4卷 第1期   页码 40-46 doi: 10.1016/j.eng.2018.02.004

摘要:

社会影响力分析(SIA)是一个广泛的研究领域,吸引了诸多研究者的兴趣。本文总结了SIA 相关的模型、方法和评价方面代表性的工作,并将SIA 模型归纳为两种类型:微观模型和宏观模型。微观模型考虑人与人之间的相互影响和影响的过程,而宏观模型认为每个人具有相同的传播概率和影响力。本文分析了包括影响最大化、影响最小化、影响流和个人影响力等的社会影响力分析方法;介绍了影响力评价指标,并分析了社会影响力评价模型。本文的目标是对社会影响力提供全面的分析,旨在辅助理解社会行为,为舆论影响提供理论基础,并揭示未来的研究方向和潜在的应用。

关键词: 社会影响力分析     在线社交网络     社会影响力分析模型     影响力评价    

Defective Nickle–Iron Layered Double Hydroxide for Enhanced Photocatalytic NO Oxidation with Significant

Xiaoyu Li,Xiaoshu Lv,Jian Pan,Peng Chen,Huihui Peng,Yan Jiang,Haifeng Gong,Guangming Jiang,Li'an Hou,

《工程(英文)》 doi: 10.1016/j.eng.2023.06.017

摘要: Photocatalysis offers a sustainable avenue for the oxidative removal of low concentrations of NOx from the atmosphere. Layered double hydroxides (LDHs) are promising candidate photocatalysts owing to their unique layered and tunable chemical structures, and the abundant hydroxide (OH−) moieties on their surfaces that are hydroxyl radical (•OH) precursors. However, inferior charge separation and limited active sites on an LDH hinder its practical applications. Herein, we developed a facile N2H4-driven etching (et) approach that introduces dual Ni2+ and OH− vacancies (Niv and OHv) into NiFe-LDH nanosheets (referred to as NiFe-LDH-et) that facilitate improved charge-carrier separation and the formation of active Lewis acidic sites (Fe3+ and Ni2+ exposed at OHv). In contrast to inert pristine LDH, NiFe-LDH-et actively removes NO when illuminated with visible light. Specifically, Ni76Fe24-LDH-et etched in 1.50 mmol·L−1 N2H4 solution removes 32.8% of the NO from continuously flowing air (NO-feed concentration: ∼500 parts per billion (ppb)) when illuminated with visible light, thereby outperforming most reported catalysts. Experimental and theoretical data reveal that the dual vacancies promote the production of reactive oxygen species (•O2− and •OH) and the adsorption of NO on the LDH. In-situ spectroscopy revealed that NO is preferentially adsorbed at Lewis acidic sites, particularly exposed Fe3+ sites, and then converted into NO+ that is subsequently oxidized to NO3− without the formation of any of the more toxic NO2 intermediate, thereby alleviating risks associated with its production and emission.

关键词: Vacancies     Layered double hydroxide     NO     +     Photocatalysis     NO removal    

Analytical method of capsizing probability in the time domain for ships in the random beam seas

LIU Liqin, TANG Yougang, LI Hongxia

《结构与土木工程前沿(英文)》 2007年 第1卷 第3期   页码 361-366 doi: 10.1007/s11709-007-0048-5

摘要: The methods for constructing safe basins of ships and predicting their survival probability in random waves were studied. The nonlinear differential equation of the rolling motion of ships in random beam seas was established considering nonlinear damping, nonlinear restoring moment, and random waves. The random rolling differential equation was solved in the time domain by applying the harmonic acceleration method and by synthetically considering the instantaneous state of ships and the narrowband wave energy spectrum. The numerical simulation of random capsizing course was brought forward, the safe basins were constructed for safe navigation, and the survival probabilities of ships were calculated. As an example, the safe basins on the rolling initial value plane were constructed for a 30.27-meter-long fishing vessel according to different initial conditions and random wave parameters. The survival probabilities of the fishing vessel under different significant wave heights were predicted. Thus, the survival probabilities of ships in random seas can be predicted quantitatively by the proposed method.

关键词: different     survival probability     different significant     nonlinear differential     narrowband    

Conversion of polyethylene to gasoline: Influence of porosity and acidity of zeolites

《能源前沿(英文)》   页码 763-774 doi: 10.1007/s11708-023-0897-1

摘要: Plastic waste is causing serious environmental problems. Developing efficient, cheap and stable catalytic routes to convert plastic waste into valuable products is of great importance for sustainable development, but remains to be a challenging task. Zeolites are cheap and stable, but they are usually not efficient for plastic conversion at a low temperature. Herein a series of microporous and mesoporous zeolites were used to study the influence of porosity and acidity of zeolite on catalytic activity for plastics conversion. It was observed that H-Beta zeolite was an efficient catalyst for cracking high-density polyethylene to gasoline at 240 °C, and the products were almost C4–C12 alkanes. The effect of porosity and acidity on catalytic performance of zeolites was evaluated, which clearly visualized the good performance of H-Beta due to high surface area, large channel system, large amount accessible acidic sites. This study provides very useful information for designing zeolites for efficient conversion of plastics.

关键词: plastics conversion     polyethylene     zeolites     acidity     porosity    

标题 作者 时间 类型 操作

Partitioning of heavy metals during municipal solid waste incineration on a laboratory fluid bed furnace

LI Jianxin, YAN Jianhua, CHI Yong

期刊论文

Erratum to: On the potential of iPhone significant location data to characterize individual mobility

期刊论文

Improved local control without elective nodal radiotherapy in patients with unresectable NSCLC treated by 3D-CRT

YANG Kunyu, LIU Li, ZHANG Tao, WU Gang, CAO Fengjun, WANG Jianhua

期刊论文

On the potential of iPhone significant location data to characterize individual mobility for air pollution

期刊论文

Distinct community assembly processes underlie significant spatiotemporal dynamics of abundant and rare

期刊论文

Repetitive transcranial magnetic stimulation causes significant changes of chemical substances in the

GUO Tiecheng, CAO Xuebing, XIA Limin

期刊论文

Significant potential of Solid Oxide Fuel Cell systems for distributed power generation and carbon neutrality

期刊论文

Identifying spreading influence nodes for social networks

期刊论文

Type 2 diabetic patients with non-alcoholic fatty liver disease exhibit significant haemorheological

Hui Dong, Fu’er Lu, Nan Wang, Xin Zou, Jingjing Rao

期刊论文

重大建设工程技术创新网络形成机理与运行机制分析

王孟钧,张镇森

期刊论文

Heterogeneous influence of individuals’ behavior on mask efficacy in gathering environments

期刊论文

社会影响力分析——模型、方法和评价

李侃, 张林, 黄河燕

期刊论文

Defective Nickle–Iron Layered Double Hydroxide for Enhanced Photocatalytic NO Oxidation with Significant

Xiaoyu Li,Xiaoshu Lv,Jian Pan,Peng Chen,Huihui Peng,Yan Jiang,Haifeng Gong,Guangming Jiang,Li'an Hou,

期刊论文

Analytical method of capsizing probability in the time domain for ships in the random beam seas

LIU Liqin, TANG Yougang, LI Hongxia

期刊论文

Conversion of polyethylene to gasoline: Influence of porosity and acidity of zeolites

期刊论文