检索结果-南通市图书馆

维普期刊数据库

Detection of eukaryotic translation initiation factor 4E and its clinical significance in hepatocellular carcinoma

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2012年第20期18卷 2540-2544页

作者： xiao-Lin Wang Hong-Pei Cai Jun-Hui Ge xiao-feng su Gastroenterology Department The Second Military Medical University Changzheng Hospital Shanghai 200003 China Pathology Department The Second Military Medical University Changzheng Hospital Shanghai 200003 China

AIM:To study the expression of eukaryotic translation initiation factor 4E(eIF4E),which is closely correlated with malignant tumors,and its relationship to prognosis in hepatocellular carcinoma. METHODS:Western blotting was performed to quantify the elF4E protein expression in the normal human liver cell line L02 and the hepatoma cell lines Hep3B, HepG2,and ***-six hepatocellular carcinoma samples with complete clinical data were obtained from Changzheng Hospital during the period of December 2008 to July *** expression of eIF4E in the tumor samples and their adjacent tissues were detected by *** relationship between the test results and hepatocellular carcinoma(HCC) prognosis was statistically analysed by using a COX proportional hazard model. REsuLTS:Western blotting analysis showed that there were distinct eIF4E protein bands in all three of the hepatoma cell *** particular,the HepG2 cell line had the highest level of eIF4E protein *** L02 cell group had a low eIF4E *** assay showed that there were 32 cases in which the tumour tissue expression was higher than their adjacent tissues,accounting for 69.57%.There were also 14 cases in which the tumour tissue expression was lower or no significant difference was found, accounting for 30.43%.COX proportional hazards model analysis showed that HCC prognosis was related to the depth of invasion,the overexpression of eIF4E and p53, possibly as independent HCC prognostic predictors. CONCLUSION:In summary,eIF4E expression is associated with liver cancer,and patients with high eIF4E expression levels have a higher risk of recurrence.

关键词： Hepatocellular carcinoma Eukaryotic translation initiation factor 4E Western blotting Immunohistochemistry Prognosis

融合空谱特征的MR-KRVFL高光谱地物识别模型研究

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

化工自动化及仪表 2024年第2期51卷 284-293页

作者：郭国璐范玉刚冯晓苏昆明理工大学信息工程与自动化学院云南省人工智能重点实验室

针对高光谱图像复杂空谱特性影响地物识别模型分类精度的问题,提出一种融合空谱特征的流形正则化核随机向量函数连接网络(MR-KRVFL)高光谱图像地物识别方法。首先,对高光谱图像进行熵率超像素分割(ERS),获取对应的同质区域;其次,利用主... 详细信息

针对高光谱图像复杂空谱特性影响地物识别模型分类精度的问题,提出一种融合空谱特征的流形正则化核随机向量函数连接网络(MR-KRVFL)高光谱图像地物识别方法。首先,对高光谱图像进行熵率超像素分割(ERS),获取对应的同质区域;其次,利用主元分析(PCA)对同质区域进行降维并提取其空谱联合特征;最后,基于空谱特征信息,构造核随机向量函数连接网络(KRVFL)地物识别模型,并对模型进行流形正则化约束,提高高光谱图像地物识别模型的泛化性能。将该模型应用于Indian Pines和Pavia University高光谱数据集,分类精度达到了96.84%和98.83%,证明所提模型的有效性。

关键词：熵率超像素分割高光谱图像核函数流形正则化分类精度地物识别

维普期刊数据库

In vitro Acute Cytotoxicity of Abamectin to the Gill Cell Line of Flounder Paralichthy olivaceus

在线全文

学校读者我要写书评

暂无评论

Journal of Ocean University of China 2007年第4期6卷 369-372页

作者： XU Yuyan GUO Huarong xiao Qin su feng YIN Licheng College of Life Science and Technology Ocean University of China Qingdao 266003 P. R. China

The cytotoxicity of abamectin to the Gill Cell Line of Flounder （FG cell line） was examined in this study. It was found that the exposure of FG cells to abamectin caused the decreases of both cell growth rate and antioxidant enzyme activities, and the increase of intracellular 02 content. It was proposed that the reduction of antioxidant enzyme activities in FG cells caused the accumulation of 02 content in FG cells, leading to the change of cell morphology and even the death of cells. The results showed that FG cell line is suitable for the evaluation of the acute toxicity of abamectin.

关键词： abamectin antioxidant enzymes cell line cytotoxicity

维普期刊数据库

Field test of high-power microwave-assisted mechanical excavation for deep hard iron ore

在线全文

学校读者我要写书评

暂无评论

Journal of Rock Mechanics and Geotechnical Engineering 2024年第6期16卷 1922-1935页

作者： feng Lin Xia-Ting feng Shiping Li xiao Hai Jiuyu Zhang Xiangxin su Tianyang Tong Jianchun Song Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines Northeastern UniversityShenyang110819China Benxi Longxin Mining Corporation Limited Benxi117000China

Microwave-assisted mechanical excavation has great application prospects in mines and tunnels,but there are few field experiments on microwave-assisted rock *** paper takes the Sishanling iron mine as the research object and adopts the self-developed high-power microwave-induced fracturing test system for hard rock to conduct field experiments of microwave-induced fracturing of iron *** heating and reflection evolution characteristics of ore under different microwave parameters(antenna type,power,and working distance)were studied,and the optimal microwave parameters were ***,the ore was irradiated with the optimal microwave parameters,and the cracking effect of the ore under the action of the high-power open microwave was *** results show that the reflection coefficient(standing wave ratio)can be rapidly(surface and the area of the high-temperature area under the action of the two antennas(right-angled and equal-angled horn antenna)are basically the same and decrease with the increase of working *** optimal microwave parameters are:a right-angle horn antenna with a working distance of 5 ***,in further experiments,the optimal parameters were used to irradiate for 20 s and 40 s at a microwave power of 60 kW,*** surface damage extended 38 cm×30 cm and 53 cm×30 cm,respectively,and the damage extended to a depth of about 50 *** drilling speed was increased by 56.2%and 66.5%,respectively,compared to the case when microwaves were not used.

关键词： Microwave parameters High power Field experiment Mechanical mining

Fast nuclear-spin gates and electrons−nuclei entanglement of neutral atoms in weak magnetic fields

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of physics 2024年第2期19卷 179-203页

作者： xiao-feng Shi School of Physics Xidian UniversityXi’an 710071China

We present a novel class of Rydberg-mediated nuclear-spin entanglement in divalent atoms with global laser ***,we show a fast nuclear-spin controlled phase gate of an arbitrary phase realizable either with two laser pulses when assisted by Stark shifts,or with three ***,we propose to create an electrons−nuclei-entangled state,which is named a super bell state(SBS)for it mimics a large Bell state incorporating three small Bell ***,we show a protocol to create a three-atom electrons-nuclei entangled state which contains the three-body W and Greenberger−Horne−Zeilinger(GHZ)states *** protocols possess high intrinsic fidelities,do not require single-site Rydberg addressing,and can be executed with large Rydberg Rabi frequencies in a weak,Gauss-scale magnetic *** latter two protocols can enable measurement-based preparation of Bell,hyperentangled,and GHZ states,and,specifically,SBS can enable quantum dense coding where one can share three classical bits of information by sending one particle.

关键词： nuclear-spin qubit electrons−nuclei entanglement super Bell state Greenberger−Horne−Zeilinger state Rydberg-mediated entanglement quantum dense coding

Applying Cognitive Behavior Therapy to Patients with Lung Cancer

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Psychosomatic Medicine Research 2021年第1期3卷 1-7页

作者： xiao-feng su Ji-Ming Han Medical College Yan’an UniversityYan’anShanxiChina

Requirements for intervention measures for lung cancer have increased in number and difficulty due to the progress of patients and influence of complex groups of *** cure rate for patients with lung cancer has improved with the vigorous development of new technologies in modern ***,their mental health status and physical quality of life have continued to warrant scholarly *** field of cognitive behavior therapy(CBT)provides innovative ideas for addressing this ***,the study reviews the origin and concept of CBT,CBT technology,and effect of its application to patients with lung cancer to provide a feasible reference for intervention on physical and mental adverse symptoms in patients with lung cancer.

关键词： Cognitive behavioral therapy Cancer Quality of life Pain Cancer-related fatigue Fear of cancer recurrence Anxiety Depression Psychosocial support Psycho-oncology

Multiscale observation in wide-spatial radar surveillance based on coherent FDA design

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2024年第2期67卷 232-252页

作者： Lei YU feng HE Yi su College of Electronics Science National University of Defense Technology

Wide-spatial radar surveillance missions are challenging tasks, requiring an increased power budget and agility in transmission aimed at extracting information from multiple targets in different environments. These requirements necessitate high transmitting degrees of freedom(DOF) to achieve the objective of multiscale observation for specific tasks in specialized regions of interest. Herein, we exploit the multiscale observation ability in wide-spatial radar surveillance based on frequency diverse array(FDA)radar. The proposed method facilitates spatial anisotropic control of multiple radar resources, including the transmitting waveforms, beampattern, and bandwidth. By utilizing a coherent FDA radar, we offer principles for the selection of baseband waveforms, in addition to the quantitative design of the beampattern gain and optimal bandwidth from the perspective of detection. The feasibility of the proposed method is validated through numerical experiments, thus indicating the potential in wide-spatial radar surveillance. Moreover,this work can be regarded as a preliminary attempt to gauge the efficacy of the computational array, a novel academic concept.

关键词： multi-scale observation wide-spatial surveillance frequency diverse array (FDA) beampattern synthesis frequency diversity gain computational array

A Trust Evaluation Mechanism Based on Autoencoder Clustering Algorithm for Edge Device Access of IoT

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2024年第2期78卷 1881-1895页

作者： xiao feng Zheng Yuan Cyber Security Academy Beijing University of Posts and TelecommunicationsBeijing100876China Department of Cyberspace Security Beijing Electronic Science and Technology InstituteBeijing100070China State Grid Info-Telecom Great Power Science and Technology Co. Ltd.Beijing102211China

First,we propose a cross-domain authentication architecture based on trust evaluation mechanism,including registration,certificate issuance,and cross-domain authentication processes.A direct trust evaluation mechanism based on the time decay factor is proposed,taking into account the influence of historical interaction *** weight the time attenuation factor to each historical interaction record for updating and got the new historical record *** refer to the beta distribution to enhance the flexibility and adaptability of the direct trust assessment model to better capture time trends in the historical *** we propose an autoencoder-based trust clustering *** perform feature extraction based on *** leibler(KL)divergence is used to calculate the reconstruction *** constructing a convolutional autoencoder,we introduce convolutional neural networks to improve training efficiency and introduce sparse constraints into the hidden layer of the *** sparse penalty term in the loss function measures the difference through the KL *** clustering is performed based on the density based spatial clustering of applications with noise(DBSCAN)clustering *** the clustering process,edge nodes have a variety of trustworthy attribute *** assign different attribute weights according to the relative importance of each attribute in the clustering process,and a larger weight means that the attribute occupies a greater weight in the calculation of ***,we introduced adaptive weights to calculate comprehensive trust *** experiments prove that our trust evaluation mechanism has excellent reliability and accuracy.

关键词： Cross-domain authentication trust evaluation autoencoder

Plasma-assisted ammonia synthesis under mild conditions for hydrogen and electricity storage:Mechanisms,pathways,and application prospects

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers in Energy 2024年第4期18卷 418-435页

作者： feng GONG Yuhang JING Rui xiao Key Laboratory of Energy Thermal Conversion and Process Measurement and Control of the Ministry of Education School of Energy and EnvironmentSoutheast UniversityNanjing 210096China

Ammonia,with its high hydrogen storage density of 17.7 wt.%(mass fraction),cleanliness,efficiency,and renewability,presents itself as a promising zero-carbon ***,the traditional Haber−Bosch(H−B)process for ammonia synthesis necessitates high temperature and pressure,resulting in over 420 million tons of carbon dioxide emissions annually,and relies on fossil fuel *** contrast,dielectric barrier discharge(DBD)plasma-assisted ammonia synthesis operates at low temperatures and atmospheric pressures,utilizing nitrogen and hydrogen radicals excited by energetic electrons,offering a potential alternative to the H−B *** method can be effectively coupled with renewable energy sources(such as solar and wind)for environmentally friendly,distributed,and efficient ammonia *** review delves into a comprehensive analysis of the low-temperature DBD plasma-assisted ammonia synthesis technology at atmospheric pressure,covering the reaction pathway,mechanism,and catalyst system involved in plasma nitrogen *** from current research,it evaluates the economic feasibility of the DBD plasmaassisted ammonia synthesis technology,analyzes existing dilemmas and challenges,and provides insights and recommendations for the future of nonthermal plasma ammonia processes.

关键词： plasma catalysis nitrogen fixation ammonia synthesis hydrogen storage catalyst carbon neutralization