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29篇 您的检索式:作者名="Liangping Zhang"
    题名 作者 年代 出处 被引量
1Masked Sentence Model Based on BERT for Move Recognition in Medical Scientific Abstracts显示文摘Purpose:Mo ve recognition in scientific abstracts is an NLP task of classifying sentences of the abstracts into different types of language units.To improve the performance of move recognition in scientific abstracts,a novel model of move recognition is proposed that outperforms the BERT-based method.Design/methodology/approach:Prevalent models based on BERT for sentence classification often classify sentences without considering the context of the sentences.In this paper,inspired by the BERT masked language model(MLM),we propose a novel model called the masked sentence model that integrates the content and contextual information of the sentences in move recognition.Experiments are conducted on the benchmark dataset PubMed 20K RCT in three steps.Then,we compare our model with HSLN-RNN,BERT-based and SciBERT using the same dataset.Findings:Compared with the BERT-based and SciBERT models,the F1 score of our model outperforms them by 4.96%and 4.34%,respectively,which shows the feasibility and effectiveness of the novel model and the result of our model comes closest to the state-of-theart results of HSLN-RNN at present.Research limitations:The sequential features of move labels are not considered,which might be one of the reasons why HSLN-RNN has better performance.Our model is restricted to dealing with biomedical English literature because we use a dataset from PubMed,which is a typical biomedical database,to fine-tune our model.Practical implications:The proposed model is better and simpler in identifying move structures in scientific abstracts and is worthy of text classification experiments for capturing contextual features of sentences.Originality/value:T he study proposes a masked sentence model based on BERT that considers the contextual features of the sentences in abstracts in a new way.The performance of this classification model is significantly improved by rebuilding the input layer without changing the structure of neural networks.Gaihong Yu Zhixiong Zhang Huan Liu Liangping Ding 2019Journal of Data and Information Science2019,4,4:14
2120 mm Single-crystalline perovskite and wafers: towards viable applications显示文摘As the large single-crystalline silicon wafers have revolutionized many industries including electronics and solar cells, it is envisioned that the availability of large single-crystalline perovskite crystals and wafers will revolutionize its broad applications in photovoltaics, optoelectronics, lasers, photodetectors, light emitting diodes(LEDs), etc. Here we report a method to grow large single-crystalline perovskites including single-halide crystals: CH3NH3PbX3(X=I, Br, Cl), and dual-halide ones:CH3NH3Pb(ClxBr1.x)3 and CH3NH3Pb(BrxI1.x)3, with the largest crystal being 120 mm in length. Meanwhile, we have advanced a process to slice the large perovskite crystals into thin wafers. It is found that the wafers exhibit remarkable features:(1)its trap-state density is a million times smaller than that in the microcrystalline perovskite thin films(MPTF);(2) its carrier mobility is 410 times higher than its most popular organic counterpart P3HT;(3) its optical absorption is expanded to as high as910 nm comparing to 797 nm for the MPTF;(4) while MPTF decomposes at 150 °C, the wafer is stable at high temperature up to270 °C;(5) when exposed to high humidity(75% RH), MPTF decomposes in 5 h while the wafer shows no change for overnight;(6) its photocurrent response is 250 times higher than its MPTF counterpart. A few electronic devices have been fabricated using the crystalline wafers. Among them, the Hall test gives low carrier concentration with high mobility. The trap-state density is measured much lower than common semiconductors. Moreover, the large SC-wafer is found particularly useful for mass production of integrated circuits. By adjusting the halide composition, both the optical absorption and the light emission can be fine-tuned across the entire visible spectrum from 400 nm to 800 nm. It is envisioned that a range of visible lasers and LEDs may be developed using the dual-halide perovskites. With fewer trap states, high mobility, broader absorption, and humidity resistance, it is expected that solar cells with high stable efficiency maybe attainable using the crystalline wafers.Yucheng Liu Xiaodong Ren Jing Zhang Zhou Yang Dong Yang Fengyang Yu Jiankun Sun Changming Zhao Zhun Yao Bo Wang Qingbo Wei Fengwei Xiao Haibo Fan Hao Deng Liangping Deng Shengzhong (Frank) Liu 2017Science China Chemistry2017,60,10:5
3Neck dissection for recurrent and persistent lymph nodes of nasopharyngeal carcinoma after radiotherapy: effect and choice显示文摘目的将在放射疗法以后与周期性、坚持的淋巴节点为鼻咽的癌的病人调查最好的外科的模式。有在放射疗法以后的周期性、坚持的淋巴节点的鼻咽的癌的 88 个病人的临床的数据回顾地被分析的方法。在层次之中的深奥淋巴节点和关系的层次被分析;幸存率和包括激进的颈解剖(RND ) 的外科的模式的周期性的率,修改的激进的颈解剖(MRND ) ,选择的颈解剖(SND ) ,和淋巴节点切除术(LNR ) 被分析;手术后的放射疗法的角色被评估。周期性、坚持的淋巴节点主要在水平 II 定位了的结果( 1 )(55.6%和58.6%,分别地),下次是水平 III 并且很少在水平 IV , V ,并且我,而是层次 IV 的数字, V ,并且我与忍受癌症的淋巴结是相对多于临床的测量的。(2 ) 通常,有涉及水平 III 和 IV 的淋巴节点的病人把另外的层次同时深奥;百分比分别地是 63.6% 和 88.9% 。然而,在水平 II 和 V 的淋巴节点主要被孤立。(3 )5 年的幸存率和整个组的周期性的率分别地是 42.77% 和 22.7% 。(4 ) RND, MRND, SND,和 LMR 组的 5 年的幸存率分别地是 39.75% , 60.00% , 37.87% ,和 44.10% ;差别是不足道的(木头等级 = 1.0, P = 0.8011 ) ;在广泛、本地的外科组之间的周期性的率是不足道的(X 2= 0.470, P = 0.493 ) 。(5 ) 有或没有手术后的放射疗法的病人的 5 年的幸存率分别地是 39.06% 和 45.26% ;差别是不足道的(木头等级 = 0.06, P = 0.8138 ) 。当周期性、坚持的淋巴结是超过一水平时,广泛的外科被推荐的结论包含了或很大或不可移动不那样, SND 应该被执行,手术后的放射疗法如果必要是重要赔偿。Liangping Xia Zongyuan Zeng Zhuming Guo Guifang Guo Bei Zhang Huijuan Qiu Feifei Zhou 2009The Chinese-German Journal of Clinical Oncology2009,8,2:3
4Automatic Keyphrase Extraction from Scientific Chinese Medical Abstracts Based on Character-Level Sequence Labeling显示文摘Purpose:Automatic keyphrase extraction(AKE)is an important task for grasping the main points of the text.In this paper,we aim to combine the benefits of sequence labeling formulation and pretrained language model to propose an automatic keyphrase extraction model for Chinese scientific research.Design/methodology/approach:We regard AKE from Chinese text as a character-level sequence labeling task to avoid segmentation errors of Chinese tokenizer and initialize our model with pretrained language model BERT,which was released by Google in 2018.We collect data from Chinese Science Citation Database and construct a large-scale dataset from medical domain,which contains 100,000 abstracts as training set,6,000 abstracts as development set and 3,094 abstracts as test set.We use unsupervised keyphrase extraction methods including term frequency(TF),TF-IDF,TextRank and supervised machine learning methods including Conditional Random Field(CRF),Bidirectional Long Short Term Memory Network(BiLSTM),and BiLSTM-CRF as baselines.Experiments are designed to compare word-level and character-level sequence labeling approaches on supervised machine learning models and BERT-based models.Findings:Compared with character-level BiLSTM-CRF,the best baseline model with F1 score of 50.16%,our character-level sequence labeling model based on BERT obtains F1 score of 59.80%,getting 9.64%absolute improvement.Research limitations:We just consider automatic keyphrase extraction task rather than keyphrase generation task,so only keyphrases that are occurred in the given text can be extracted.In addition,our proposed dataset is not suitable for dealing with nested keyphrases.Practical implications:We make our character-level IOB format dataset of Chinese Automatic Keyphrase Extraction from scientific Chinese medical abstracts(CAKE)publicly available for the benefits of research community,which is available at:http://gffzz188fe103f8f1460as5ku9px96wbqn6pcn.ffgz.tsg.suse.edu.cn/possible1402/Dataset-For-Chinese-Medical-Keyphrase-Extraction.Originality/value:By designing comparative experiments,our study demonstrates that character-level formulation is more suitable for Chinese automatic keyphrase extraction task under the general trend of pretrained language models.And our proposed dataset provides a unified method for model evaluation and can promote the development of Chinese automatic keyphrase extraction to some extent.Liangping Ding Zhixiong Zhang Huan Liu Jie Li GaihongYu 2021Journal of Data and Information Science2021,6,3:3
5Single‑Layer ZnO Hollow Hemispheres Enable High‑Performance Self‑Powered Perovskite Photodetector for Optical Communication显示文摘The carrier transport layer with reflection reduction morphology has attracted extensive attention for improving the utilization of light.Herein,we introduced single-layer hollow ZnO hemisphere arrays(ZHAs)behaving light trapping effect as the electron transport layer in perovskite photodetectors(PDs).The singlelayer hollow ZHAs can not only reduce the reflection,but also widen the angle of the effective incident light and especially transfer the distribution of the optical field from the ZnO/FTO interface to the perovskite active layer confirmed by the 3D finitedifference time-domain simulation.These merits benefit for the generation,transport and separation of carriers,improving the light utilization efficiency.Finally,our optimized FTO/ZHA/CsPbBr3/carbon structure PDs showed high self-powered performance with a linear dynamic range of 120.3 dB,a detectivity of 4.2×10^(12) Jones,rise/fall time of 13/28μs and the f_(−3) dB of up to 28 kHz.Benefiting from the high device performance,the PD was demonstrated to the application in the directional transmission of encrypted files as the signal receiving port with super high accuracy.This work uniquely utilizes the features of high-performance self-powered perovskite PDs in optical communication,paving the path to wide applications of all-inorganic perovskite PDs.Xiyan Pan Jianqiang Zhang Hai Zhou Ronghuan Liu Dingjun Wu Rui Wang Liangping Shen Li Tao Jun Zhang Hao Wang 2021Nano-Micro Letters2021,13,4:3
6Initial neutrophil lymphocyte ratio is superior to platelet lymphocyte ratio as an adverse prognostic and predictive factor in metastatic colorectal cancer显示文摘Wenzhuo He Chenxi Yin Guifang Guo Chang Jiang Fang Wang Huijuan Qiu Xuxian Chen Ruming Rong Bei Zhang Liangping Xia 2013Medical Oncology2013,,1:2
7显示文摘LIANGP ZHANG H Y YUZ L 2008J OrgChem2008,73,6:1
8CMYA5: a new potential substrate of Kcna3 in human heart显示文摘Liangping Zhang Huimin Fan Rong Lu Yuanfeng Xin Xuechu Zhen Zhongmin Liu 2013Acta Biochimica et Biophysica Sinica2013,45,3:1
9中国男性乳腺癌患者临床特征:公开发表文章的总结(英文)显示文摘Objective:The extremely low incidence of male breast cancer (MBC) leads to lack of prospective randomized phase III studies worldwide. Especially in China,all studies on Chinese patients with MBC were based on small sample size and single institute experience. The aim of this study was to provide overall view of characteristics of Chinese patients with MBC by means of summarizing all related papers published in Chinese journals. Methods: An online search was made in CBM,VIP,CNKI,and CBA databases to find all published articles of interest on Chinese patients with MBC. And eight subjects including the proportion of MBC in all breast cancer,age,tumor location,clinical stages,pathological subtypes,treatment modalities,ER/PR expression,and 5-year survival rate were selected to calculate the proportion and their 95% interval confidence. Results: There were 122 papers with 2584 patients enrolled. The basic features of Chinese patients with MBC included:(1) MBC only with a proportion of 1.06% of all the breast cancer; (2) The mean age at diagnosis was 57.6 years old; (3) Tumor mainly located in the areolar region (74.83%) with obvious nipple and/or skin involvement; (4) Nearly 62.62% patients were in early stage before accepting treatment; (5) Infiltrating ductal carcinoma accounted for 79.05% of all pathological subtypes; (6) ER/PR expression rate was 65.86%; (7) Radical resection was up to 86.06% in all surgical modalities; (8) The 5-year survival rate was 57.33%. Conclusion: The results showed in this study were an overall view of Chinese patients with MBC whose characteristics were similar to that reported in the West. Though this study provided a little bit stronger confidence than a single study collected in this paper,studies with more powerful evidence are urgently demanding in China.Liangping Xia Zhongyu Yuan Xi Wang Jiehua He Bei Zhang Guifang Guo Feifei Zhou Fang Wang 2010The Chinese-German Journal of Clinical Oncology2010,9,6:1
10Resistivity response of coal under hydraulic fracturing with different injection rates:A laboratory study显示文摘Resistivity will have different response characteristics to the hydraulic fracture propagation process. In this work, a resistivity testing system for hydraulic fracturing specimens was established. Resistivity and acoustic emission(AE) information were jointly analysed to determine the dynamic response characteristics of resistivity during hydraulic fracture propagation. The results show that the water and fracture exert a competitive influence on the connection structure of the circuit, and there are two significant peak resistivity points in the curve, presenting a double peak therein. The peak resistivity data of the specimen with a larger fracture area are much different from the initial value. With the increase of the rate of injection, the range of variation of the highest value that can be reached with the specimen resistivity decreases. High resistivity rates or high resistivity fluctuations exhibit rapid a release of fracture energy. The fracture failure mode dominated by shear fractures makes the formation produce a “series+parallel” electrical connection structure;a calculation model of formation resistivity based on shear and tensile failure was proposed to characterize the proportion of different types of hydraulic fractures and elucidate the control effect of matrix resistivity on the electrical performance of the overall circuit structure.Mingyang Song Quangui Li Qianting Hu Yanqing Wu Guanhua Ni Yangcheng Xu Yuebing Zhang Liangping Hu Jialin Shi Jichuan Liu Yize Deng 2022International Journal of Mining Science and Technology2022,32,4:1
11Effects of Mechanical Activation on the HCl Leaching Behavior of Titanaugite, Ilmenite, and Their Mixtures显示文摘Li Zhang Huiping Hu Liangping Wei Qiyuan Chen Jun Tan 2010Metallurgical and Materials Transactions B2010,,6:1
12Microwave ablation in the spleen for treatment of secondary hypersplenism:a preliminary study显示文摘LiangP Gao Y Zhang H 2011AJR2011,196,:1
13Multifunctional nanoprobes for upconversion fluorescence, MR and CT trimodal imaging显示文摘Huaiyong Xing Wenbo Bu Shengjian Zhang Xiangpeng Zheng Ming Li Feng Chen Qianjun He Liangping Zhou Weijun Peng Yanqing Hua Jianlin Shi 2011Biomaterials2011,,4:1
14Deleterious processes of a diode-pumped cesium vapor hollow-core photonic-crystal fiber laser显示文摘A diode-pumped alkali laser(DPAL) provides the significant promise for high-powered performances. In this paper, a mathematical model is introduced for examination of the kinetic processes of a diode-pumped cesium vapor hollow-core photonic-crystal fiber(HC-PCF) laser, in which the cesium vapor is filled in the center hole of a photonic-bandgap fiber instead of a glass cell. The influence of deleterious processes including energy pooling, photo-ionization, and Penning ionization on the physical features of a fiber DPAL is studied in this report. It has been theoretically demonstrated that the deleterious processes cannot be ignored in a high-powered fiber-DPAL system.Guofei An You Wang Juhong Han He Cai Zhigang Jiang Ming Gao Shunyan Wang Wei Zhang Hongyuan Wang Liangping Xue Jie Zhou 2016High Power Laser Science and Engineering2016,4,4:0
15Experimental evaluation of temperature distribution of a vapor cell using a Hilbert transform procedure显示文摘A diode-pumped alkali vapor laser(DPAL) is one of the most promising candidates of the next-generation high-powered laser source. As the saturated number density of alkali vapor is highly dependent on the temperature inside a vapor cell,the temperature distribution in the cross-section of a cell will greatly affect the homogeneity of a laser medium and the output characteristics of a DPAL. In this paper, we developed an algorithm based on the regime concluding quasi-Hilbert transform to evaluate the phase aberration of a wavefront when the probe beam passes through the vapor cell placed in one arm of a Mach–Zehnder interference setup. According to the theoretical algorithm, we deduced the temperature distribution of a cesium vapor cell for different heating conditions. The study is thought to be useful for development of a high-powered laser.He Cai You Wang Ming Gao Wei Zhang Zhigang Jiang Juhong Han Guofei An Shunyan Wang Liangping Xue Hongyuan Wang Jie Zhou 2016High Power Laser Science and Engineering2016,4,4:0
16A Flexible Pressure Sensor Based on Poly(dimethylsiloxane) Nanostructures Film显示文摘This paper proposed a flexible pressure sensor based on poly(dimethylsiloxane) nanostructures film and report an efficient,simple,and low-cost fabrication strategy via soft nanoimprint lithography.The pressure sensor can convert external pressure or mechanical deformation into electrical signal to detect pressure and strain changes based on the coupling of triboelectrification and electrostatic induction.To enhance the performance of the pressure sensor,it consists of sub-500 nm resolution on the surface of elastic poly(dimethylsiloxane) sensitive layer and an indium tin oxide electrode thin film.When the pressure applied on the nanostructures layer,triboelectrostatic charges are induced.In the experiment,it measures up to sensitivity of 0.8 V/kPa at frequency of 5 Hz.This study results in potential applications such as wearable smart devices and skin-attachable diagnostics sensing systems.Man Zhang Liangping Xia Suihu Dang Lifang Shi Axiu Cao Chunlei Du 2019Journal of Microelectronic Manufacturing2019,2,3:0
17Cetuximab联合化疗二线治疗6例非小细胞肺癌的近期疗效分析(英文)显示文摘Objective:Cetuximab combined with chemotherapy has been used to treat non-small cell lung cancer (NSCLC) in recent years, most of them were first line setting.This study was to summarize our experiences in treating NSCLC patients with cetuximab in the non-first line setting.Methods:From October 1st 2006 to December 31st 2009, six NSCLC patients were treated with cetuximab combined standard chemotherapy as non-first line setting in Sun Yat-sen University Cancer Center, China.The short-term efficacies and safeties were analyzed.Results:1.A total of 18 cycles of cetuximab treatment, with a median of two cycles in the whole group.2.There were 6 patients treated as non-first line setting, overall response rate (ORR) was 33.3% (2/6), disease control rate (DCR) was 33.3% (2/6), median time to progression (TTP) was 3.5 (3-4) months, and median OS was 18 (4-28) months.3.There were 50% (3/6) patients occurred acne-like rash within three weeks, their ORR was 66.7% (2/3), and DCR was 66.7% (2/3), however, both of ORR and DCR in patients who didn't occurred acne-like rash were 0% (0/3), the differences of ORR, DCR between two groups were in significant different (P=0.143).4.There was no treatment-associated death and no cetuximab-associated discontinuation.The incidence of acne-like rash was 50% occurred within three weeks, there were two patients suffered side effects associated with chemotherapy.Conclusion:The data of cetuximab application in non-first line setting for patients with NSCLC were rare, and the addition of cetuximab in those population was safe.Fang Wang Liangping Xia Guifang Guo Huijuan Qiu Feifei Zhou Bei Zhang Li Zhang 2010The Chinese-German Journal of Clinical Oncology2010,9,9:0
18A robust Janus bilayer with tailored ionic conductivity and interface stability for stable Li metal anodes显示文摘The formation and growth of Li-dendrites caused by inhomogeneous Li deposition severely hinder the commercial applications of Li metal batteries due to the consequence of short-circuiting.Herein,we propose a Janus bilayer composed of black phosphorus(BP)and graphene oxide(GO)as an artificial interface with chemical/mechanical stability and well-regulated Li-ion flux distribution for Li metal anode protection.Owing to the synergy between the fast Li-ion transport of BP in the inner layer and the high mechanical and chemical stability of GO in the outer layer,the GO/BP with good electrolyte wettability acts as a Li-ion regulator that can induce homogeneous growth of Li to suppress the Li dendrites growth.Accordingly,long-term stability(500 h at 1 mA cm^(-2))with a low overpotential of 30 mV is achieved in the symmetric cell with GO/BP-Li anode.Furthermore,the Li–S cell with GO/BP-Li exhibits enhanced cycling performance with a high capacity retention rate of 76.2%over 500 cycles at 1 C.Guodong Zhang Pengwei Li Kai Chen Hongfei Zheng Wei He Liangping Xiao Xingyun Li Qingchi Xu Jian Weng Jun Xu 2022Journal of Energy Chemistry2022,31,11:0
19Simulation of directional propagation of hydraulic fractures induced by slotting based on discrete element method显示文摘Hydraulic fracturing(HF)technology can safely and efficiently increase the permeability of coal seam,which is conducive to CBM exploration and prevent coal and gas outburst.However,conventional HF fractures tend to expand in the direction of maximum principal stress,which may be inconsistent with the direction of fracturing required by the project.Therefore,the increased direction of coal seam permeability is different from that expected.To solve these problems,PFC2D software simulation is used to study directional hydraulic fracturing(DHF),that is the combination of slotting and hydraulic fracturing.The effects of different slotting angles(θ),different horizontal stress difference coefficients(K)and different injection pressures on DHF fracture propagation are analyzed.The results show that the DHF method can overcome the dominant effect of initial in-situ stress on the propagation direction of hydraulic fractures and control the propagation of fractures along and perpendicular to the slotting direction when θ,K and liquid injection pressure are small.When the DHF fracture is connected with manual slotting,the pressure will shake violently,and the fracturing curve presents a multi-peak type.The increase and decrease of particle pressure around the fracturing hole reflect the process of pressure accumulation and fracture propagation at the fracture tip respectively.Compared with conventional HF,DHF can not only shorten the fracturing time but also make the fracture network more complex,which is more conducive to gas flow.Under the action of in-situ stress,the stress between slots will increase to exceed the maximum horizontal principal stress.Moreover,with the change in fracturing time,the local stress of the model will also change.Hydraulic fractures are always expanding to the area with large local stress.The research results could provide certain help for DHF theoretical research and engineering application.Kai Wang Guodong Zhang Feng Du Yanhai Wang Liangping Yi Jianquan Zhang 2023Petroleum2023,9,4:0
20The first chromosome-level Fallopia multiflora genome assembly provides insights into stilbene biosynthesis显示文摘Fallopia multiflora(Thunb.)Harald,a vine belonging to the Polygonaceae family,is used in traditional medicine.The stilbenes contained in it have significant pharmacological activities in anti-oxidation and anti-aging.This study describes the assembly of the F.multiflora genome and presents its chromosome-level genome sequence containing 1.46 gigabases of data(with a contig N50 of 1.97 megabases),1.44 gigabases of which was assigned to 11 pseudochromosomes.Comparative genomics confirmed that F.multiflora shared a whole-genome duplication event with Tartary buckwheat and then underwent different transposon evolution after separation.Combining genomics,transcriptomics,and metabolomics data to map a network of associated genes and metabolites,we identified two FmRS genes responsible for the catalysis of one molecule of p-coumaroyl-CoA and three molecules of malonyl-CoA to resveratrol in F.multiflora.These findings not only serve as the basis for revealing the stilbene biosynthetic pathway but will also contribute to the development of tools for increasing the production of bioactive stilbenes through molecular breeding in plants or metabolic engineering in microbes.Moreover,the reference genome of F.multiflora is a useful addition to the genomes of the Polygonaceae family.Yujiao Zhao Zhengyang Yang Zhongren Zhang Minzhen Yin Shanshan Chu Zhenzhen Tong Yuejian Qin Liangping Zha Qingying Fang Yuan Yuan Luqi Huang Huasheng Peng 2023Horticulture Research2023,10,5:0
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