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Acta Mathematica Sinica,English Series 2009年第1期25卷 133-156页

作者： shu hong chen Zhong TAN School of Mathematical Science Xiamen University Xiamen 361005 P. R. China

We consider the questions of boundary regularity for weak solutions of second-order nonlinear elliptic systems under the natural growth condition. We obtain a general criterion for a weak solution to be regular in the neighborhood of a given boundary point. The proof yields directly the optimal regularity for the solution in this neighborhood. This result is new for the situation under the natural growth conditions.

关键词： nonlinear elliptic systems natural growth condition A-harmonic approximation technique,boundary partial regularity

Solutions of Ginzburg-Landau Theory for Atomic Fermi Gases Near the BCS-BEC Crossover

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Acta Mathematicae Applicatae Sinica 2015年第3期31卷 665-676页

作者： shu-hong chen Bo-ling GUO School of Mathematics and Statistics Minnan Normal University Institute of Applied Physics and Computational Mathematics

We are concerned with a time-dependent Ginzburg-Landau equations come from the superfluid atomic Fermi-gases near the Feshbach resonance from the fermion-boson model. We obtain the global existence and uniqueness of s... 详细信息

关键词： global existence uniqueness time-dependent Ginzburg-Landau theory BCS-BEC crossover

The method of p-harmonic approximation and optimal interior partial regularity for energy minimizing p-harmonic maps under the controllable growth condition

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Science China Mathematics 2007年第1期50卷 105-115页

作者： shu-hong chen Zhong TAN School of Mathematical Science Xiamen UniversityXiamen 361005China

In this paper, we are concerned with the partial regularity for the weak solutions of energy minimizing p-harmonic maps under the controllable growth condition. We get the interior partial regularity by the p-harmonic approximation method together with the technique used to get the decay estimation on some Degenerate elliptic equations and the obstacle problem by Tan and Yan. In particular, we directly get the optimal regularity.

关键词： p-harmonic approximation controllable growth condition regularity 35J70 35J60 35D10 35B65

Existence and Properties of Solutions for a Class of Fractional Differential Equations

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Acta Mathematicae Applicatae Sinica 2021年第3期37卷 477-484页

作者： Yong-qiang XU shu-hong chen Zhong TAN School of Mathematics and Statistics Minnan Normal UniversityZhangzhou 363000China School of Mathematical Sciences Xiamen UniversityXiamen 361005China

In this paper,we consider the initial value problem of a class of fractional differential ***,we obtain the existence and uniqueness of the solutions by using Picard’s method of successive *** we discuss the dependen... 详细信息

关键词： existence uniqueness fractional derivative equations

Simultaneous Determination of Gold and Platinum by Double Artificial Neural Network Analysis with Flow-injection Chemiluminescence

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Chinese Chemical Letters 2006年第10期17卷 1343-1346页

作者： Ming Yang LIU Hai Tao ZHANG Jun Feng LI shu Gui chen hong Yan WANG College of chemistry Jilin University Changchun 130012

A highly sensitive double artificial neural network （DANN） analysis with flow-injection chemiluminescence （FI-CL） has been developed to simultaneously determine the trace amounts of the gold and platinum in simula... 详细信息

关键词： Double artificial neural networks flow-injection chemiluminescence simultaneous determination gold and platinum.

Optimizing frequency allocation for superconducting quantum processors with frequency-tunable qubits

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Science China(Physics,Mechanics & Astronomy) 2025年第2期68卷 23-36页

作者： Bi-Ying Wang Wuxin Liu Xiangyu chen shu Xu Jiangyu Cui Man-hong Yung Quantum Science Center of Guangdong-hong Kong-Macao Greater Bay Area(Guangdong) Shenzhen518129China Shenzhen Institute for Quantum Science and Engineering Southern University of Science and TechnologyShenzhen518055China International Quantum Academy Shenzhen518048China Guangdong Provincial Key Laboratory of Quantum Science and Engineering Southern University of Science and TechnologyShenzhen518055China Shenzhen Key Laboratory of Quantum Science and Engineering Southern University of Science and TechnologyShenzhen518055China

As superconducting quantum processors scale,a key challenge is maintaining high coherence times and fidelity control over numerous *** propose an automatic frequency allocation method for frequency-tunable qubits that equally considers coherence-limited fidelity and crosstalk-induced control errors during the allocation *** employing a weighted average of the objective functions for coherence time and crosstalk,we numerically calculate gate fidelity to establish an open-loop optimization for determining suitable weight *** results in an efficient objective function for frequency *** apply our method to frequency-tunable transmon qubits with tunable couplers,both theoretically and *** numerical results demonstrate significant advantages,including substantial reductions in gate errors and faster operation times,especially at higher qubit ***,our approach successfully achieves approximately 99.9%single-qubit fidelity on a nine-qubit chip.

关键词： frequency allocation transmon qubits superconducting processors

Improving Multi-task GNNs for Molecular Property Prediction via Missing Label Imputation

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Machine Intelligence Research 2025年第1期22卷 131-144页

作者： Fenyu Hu Dingshuo chen Qiang Liu shu Wu University of Chinese Academy of Sciences Beijing100190China Center for Research on Intelligent Perception and Computing State Key Laboratory of Multimodal Artificial Intelligence SystemsInstitute of AutomationChinese Academy of SciencesBeijing100190China

The prediction of molecular properties is a fundamental task in the field of drug ***,graph neural networks(GNNs)have been gaining prominence in this *** a molecule tends to have multiple correlated properties,there is a great need to develop the multi-task learning ability of ***,limited by expensive and time-consuming human annotations,collecting complete labels for each task is *** a result,most existing benchmarks involve many missing labels in training data,and the performance of GNNs is impaired due to the lack of sufficient supervision *** overcome this obstacle,we propose to improve multi-task molecular property prediction by missing label ***,a bipartite graph is first introduced to model the molecule-task co-occurrence ***,the imputation of missing labels is transformed into predicting missing edges on this bipartite *** predict the missing edges,a graph neural network is devised,which can learn the complex molecule-task co-occurrence *** that,we select reliable pseudo labels according to the uncertainty of the prediction *** with enough and reliable supervision information,our approach achieves state-of-the-art performance on a variety of real-world datasets.

关键词： Graph classification imbalance learning prediction bias mixture of experts multiview representations

On-line determination of selenium compounds in tea infusion by extractive electrospray ionization mass spectrometry combined with a heating reaction device

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Chinese Chemical Letters 2025年第1期36卷 496-500页

作者： Lu Huang Jiang Wang hong Jiang Lanfang chen Huanwen chen Academician Workstation Jiangxi University of Chinese MedicineNanchang 330004China Suzhou Jingcheng Precision Instrument Technology Co. Ltd.Suzhou 215228China The First Affiliated Hospital of Nanchang University Nanchang 330006China

Selenium is one of the important trace elements in the human *** deficiency will directly affect human *** people's attention to health,the content of selenium in food has gradually attracted ***,detecting selenium compounds in complex samples remains a *** this work,we built an online heating-reaction *** device combines the electrospray extraction ionization mass spectrometry(EESI-MS)with the heating reaction device,which can simultaneously detect various selenium compounds in complex liquid *** acidic conditions,the sample was heated and catalyzed by a heating reaction device,so that the SeO~(2-)_(3)and O-phenylenediamine(OPD)could generate 1,3-dihydro-2,1,*** on the above reactions,we can detect organic selenium,inorganic selenium and other compounds in liquid samples by organic mass *** this experiment,we determined the content of three forms of selenium:selenomethionine(SeMet),l-selenocystine(SeCys(2)),and sodium *** calibration curves for SeMet,SeCys(2),and sodium selenite showed strong linearity within a range of 0.50-50.00μg/*** limits of detection(LOD)for the three compounds were 0.22,0.27,and 0.41μg/L,*** limits of quantification(LOQ)were 0.68,0.81,and 1.23μg/L,*** recoveries at three levels ranged from 98.8%to 106.1%.In addition,this method can simultaneously detect three selenium compounds and three other specific chemical components in tea infusion samples,providing a rapid and efficient method for identifying tea quality.

关键词： Heating reaction device Extractive electrospray ionization mass spectrometry Inorganic selenium Selenium compounds Tea infusion

Different fates of Sb(Ⅲ)and Sb(V)during the formation of jarosite mediated by Acidithiobacillus ferrooxidans

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Journal of Environmental Sciences 2025年第1期147卷 342-358页

作者： Lu chen Yirong Wang hongchang Liu Yuhang Zhou Zhenyuan Nie Jinlan Xia Wensheng shu School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083China Key Lab of Biometallurgy of Ministry of Education of China Central South UniversityChangsha 410083China School of Life Sciences South China Normal UniversityGuangzhou 510631China

Secondary iron-sulfate minerals such as jarosite,which are easily formed in acid mine drainage,play an important role in controlling metal *** this work,the typical iron-oxidizing bacterium Acidithiobacillus ferrooxidans ATCC 23270 was selected to synthesize jarosite in the presence of antimony ions,during which the solution behavior,synthetic product composition,and bacterial metabolism were *** results show that in the presence of Sb(V),Fe^(2+)was rapidly oxidized to Fe^(3+)by *** and Sb(V)had no obvious effect on the biooxidation of Fe^(2+)under the current experimental *** presence of Sb(Ⅲ)inhibited bacterial growth and Fe^(2+)*** the group with Sb(Ⅲ),products with amorphous phaseswere formed 72 hr later,whichwere mainly ferrous sulfate and pentavalent antimony oxide,and the amorphous precursor was finally transformed into a more stable crystal *** the group with Sb(V),the morphology and structure of jarosite were changed in comparison with those without *** biomineralization process was accompanied by the removal of 94%Sb(V)to form jarosite containing the Fe-Sb-O *** transcriptome analysis shows differential effects of Sb(Ⅲ)and Sb(V)on bacterial *** expression levels of functional genes related to cell components were much more downregulated for the group with Sb(Ⅲ)butmuch more regulated for that with Sb(V).Notably,cytochrome c and nitrogen fixation-relevant genes for the A.f_Fe^(2+)_Sb(Ⅲ)group were enhanced significantly,indicating their role in Sb(Ⅲ)*** study is of great value for the development of antimony pollution control and remediation technology.

关键词： Jarosite Acidithiobacillus ferrooxidans Bacterial iron oxidation Sb(Ⅲ)and Sb(V)transformation Transcriptome analysis

Clinicopathological features and treatment of gastrointestinal schwannomas

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World Journal of Gastroenterology 2025年第5期31卷 32-42页

作者： Peng-cheng Zhang shu-Hui Wang Jun Li Jing-Jie Wang hong-Tan chen Ai-Qing Li Department of Gastroenterology The First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003Zhejiang ProvinceChina Department of Epidemiology&Health Statistics School of Public HealthSchool of MedicineZhejiang UniversityHangzhou 310058Zhejiang ProvinceChina Department of Pathology The First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003Zhejiang ProvinceChina

BACKGROUND Gastrointestinal schwannomas(GIS)are rare neurogenic tumors arising from Schwann cells in the gastrointestinal *** on GIS are limited to small case reports or focus on specific tumor sites,underscoring the diagnostic and thera-peutic challenges they *** To comprehensively examine the clinical features,pathological characteristics,treatment outcomes,associated comorbidities,and prognosis of *** The study population included patients diagnosed with GIS at the First Affiliated Hospital,Zhejiang University School of Medicine,between June 2007 and April *** were retrospectively collected and analyzed from medical records,including demographic characteristics,endoscopic and imaging findings,treatment modalities,pathological evaluations,and follow-up *** In total,229 patients with GIS were included,with a mean age of 56.00 years and a male-to-female ratio of 1:*** mean tumor size was 2.75 cm,and most(76.9%)were located in the ***,6.6%of the patients had other malig-nant *** imaging and endoscopy frequently misdiagnosed GIS as gastrointestinal stromal ***,accurate preoperative diagnosis was achieved using endoscopic ultrasound-guided fine-needle aspiration combined with immunohistochemical analysis,in which S100 and SOX-10 markers were mostly *** tumors were typically managed with endoscopic resection,while larger lesions were treated with surgical ***-up results showed that most patients experienced favorable *** Preoperative diagnosis of GIS via clinical characteristics,endoscopy,and imaging examinations remains challenging but *** therapy provides a minimally invasive and effective option for patients.

关键词： Gastrointestinal schwannoma Diagnosis Treatment Endoscopictherapy Complications