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Synthesis and Surface Activity of Novel Triazole-based Cationic Gemini Surfactants

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Chinese Chemical Letters 2003年第6期14卷 653-656页

作者： ling Guang QIU An Jian xie Yu Hua SHEN School of Chemistry and Chemical Engineering Anhui UniversityHefei 230039 Institute of Solid State Physics Chinese Academy of SciencesHefei 230031

The synthesis and surfactant activities of two new cationic gemini surfactants containing triazole compound as spacer were described. Their critical micelle concentrations (CMC), which are 1.8×10-4 mol/L and 3.9×10-4 mol/L respectively, are much lower than that of conventional surfactant cetyltrimethyl ammonium chloride (CTAC). In addition, compared with some gemini surfactants containing phenylene, xylylene and stilbenyl as spacer, this new kind of surfactants has good solubility in water at room temperature because of containing more hydrophilic groups or atoms in molecules.

关键词： Gemini surfactant cationic surfactant critical micelle concentration triazole synthesis.

Au-decorated porous structure graphene with enhanced sensing performance for low-concentration NO2 detection

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Rare Metals 2020年第6期39卷 651-658页

作者： Yan-Yan Fan hai-ling Tu Yu Pang Feng Wei Hong-Bin Zhao Yi Yang Tian-ling Ren State Key Laboratory of Advanced Materials for Smart Sensing General Research Institute for Nonferrous MetalsBeijing 100088China GRIMAT Engineering Institute Co. LtdBeijing 101407China Institute of Microelectronics Tsinghua UniversityBeijing 100084China General Research Institute for Nonferrous Metals Beijing 100088China Beijing National Research Center for Information Science and Technology(BNRist) Tsinghua UniversityBeijing 100088China

A recent progress in new emerging two-dimensional(2 D)materials has provided promising opportunity for gas sensing in ultra-low detectable *** this work,we have demonstrated a flexible NO2 gas sensor with porous structure graphene on polyethylene terephthalate substrates operating at room *** gas sensor exhibited good performance with response of 1.2%and a fast response time within 30 s after exposure to50×10^-9 NO2 *** porous structure of graphene increased the surface area,the sensor showed high sensitivity of ppb level for NO2 *** nanoparticles were decorated on the surface of the porous structure graphene skeleton,resulting in an incensement of response compared with pristine *** nanoparticles-decorated graphene exhibits not only better sensitivity(1.5-1.6 times larger than pristine graphene)for NO2 gas detection,but also fast *** sensor was found to be robust and sensitive under the cycling bending test,which could also be ascribed to the merits of *** porous structure graphene-based gas sensor is expected to enable a simple and inexpensive flexible gas sensing platform.

关键词： Graphene Au nanoparticles Porous structure Gas sensor Nitrogen dioxide(NO2)

The Dynamics and Bifurcation Control of a Singular Biological Economic Model

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International Journal of Automation and computing 2012年第1期9卷 1-7页

作者： Ning Li hai-Yi Sun Qing-ling Zhang Institute of Systems Science Northeastern University Shenyang 110819 PRC College of Science Shenyang Jianzhu University Shenyang 110168 PRC

The objective of this paper is to study systematically the dynamics and control strategy of a singular biological economic model that is described by a differential-algebraic equation. It is shown that when the economic profit passes through zero, this model exhibits the transcritical bifurcation, the Hopf bifurcation, and the limit cycle. In particular, the system undergoes the singularity induced bifurcation at the positive equilibrium, which can result in impulse. Then, state feedback controllers closer to the actual control strategies are designed to eliminate the unexpected singularity induced bifurcation and stabilize the positive equilibrium under the positive profit. Finally, numerical simulations verify the results and illustrate the effectiveness of the controllers. Also, the model with positive economic profit is shown numerically to have different dynamics.

关键词： Differential-algebraic equation transcritical bifurcation Hopf bifurcation limit cycle singularity induced bifurcation,bifurcation control.

Code Generation Framework for Grid Development

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The Journal of China Universities of Posts and Telecommunications 2006年第2期13卷 39-42页

作者： JIANG ling-yun WANG Ru-chuan WANG hai-yan Department of Computer Science and Technology Nanjing University of Posts and Telecommunications Nanjing 210003 P.R. China State Key Laboratory for Novel Software Technology Nanjing University Nanjing 210093 P.R. China

While grid computing receives more and more attentions, it is not widely used partly due to requirement of sophisticated development. This paper discusses a code generation framework for grid computing. We firstly introduce GBuilder as a rapid development tool for building grid computing applications, then present the details of the code generation framework. We then discuss a case study to show the advantages of the whole processing of code generation framework, which including saved development time and less intricacy burden on the grid application developers.

关键词： code generation grid globus toolkit

Graph Embedding Based API Graph Search and Recommendation

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Journal of Computer Science & Technology 2019年第5期34卷 993-1006页

作者： Chun-Yang ling Yan-Zhen Zou Ze-Qi Lin Bing xie Key Laboratory of High Confidence Software Technologies Ministry of EducationBeijing 100871China School of Electronics Engineering and Computer Science Peking UniversityBeijing 100871China

Searching application programming interfaces (APIs) is very important for developers to reuse software projects. Existing natural language based API search mainly faces the following challenges. 1) More accurate results are required as software projects evolve to be more heterogeneous and complex. 2) The semantic relationships between APIs (e.g., inheritances between classes, and invocations between methods) need to be illustrated so that developers can better understand their usage scenarios. To deal with these issues, we propose GeAPI, a novel graph embedding based approach for API graph search and recommendation in this paper. First, we build a software project’s API graph automatically from its source code and represent each API using graph embedding methods. Second, we search the API graph with a question in natural language, and return the corresponding subgraph that is composed of relevant code elements and their associated relationships, as the best answer of the question. In experiments, we select three well-known open source projects, JodaTime, Apache Lucene and POI, as examples to perform API search tasks. The experimental results show that our approach GeAPI improves F1-score by 10% compared with the existing shortest path based API search approach, while reduces the average response time about 60 times.

关键词： application programming interface (API) recommendation API graph graph embedding software reuse

Collision tumor of squamous cell carcinoma and neuroendocrine carcinoma in the head and neck:A case report

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World Journal of Clinical Cases 2020年第12期8卷 2610-2616页

作者： Shi-hai Wu Bao-Zhu Zhang ling Han Department of Radiation Oncology the Second Clinical Medical College of Jinan UniversityShenzhen People’s HospitalShenzhen 518020Guangdong ProvinceChina Department of Oncology The People’s Hospital of BaoanShenzhenThe Affiliated Baoan Hospital of Southern Medical UniversityShenzhen 518020Guangdong ProvinceChina Department of Otorhinolaryngology the Second Clinical Medical College of Jinan UniversityShenzhen People’s HospitalShenzhen 518020Guangdong ProvinceChina

BACKGROUND There are many disputes about the definition,diagnosis,therapy,and prognosis of collision *** SUMMARY We describe a rare patient with a collision tumor consisting of neuroendocrine carcinoma(NEC)and squamous cell carcinoma(SCC)in the nasal cavity and paranasal *** received operation,concurrent chemoradiotherapy,and then two cycles of palliative ***-up at 12 mo after diagnosis showed that this patient experienced a complete response with no signs of recurrence or metastasis.A literature review of previous 26 cases diagnosed with collision tumor of NEC and SCC in the head and neck was also *** It is challenging to manage collision tumors because there are two morphologically and etiologically distinct ***-designed multimodality therapy including surgery and chemoradiotherapy might lead to a long survival in these patients.

关键词： Collision tumor Squamous carcinoma Neuroendocrine carcinoma Chemoradiotherapy Head and neck Case report

An Interesting Approach to Bis-calix[5]arene Analogue from Calix[6]arene

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Chinese Chemical Letters 2002年第3期13卷 205-206页

作者： hai Bing LI Yuan Yin CHEN Shu ling GONG Department of Chemistry Wuhan UniversityWuhan 430072

By 1,4-bridging of p-tert-butylcalix [6] arene with 2,6-bis (bromomethyl)-4-methyl- anisole, a new type of bis-calix [5] arene analogue was obtained in high yield..

关键词： Bis-calix arene calyx arene bridging.

Asymptotic stabilization of dynamically quantized nonlinear systems in feedforward form

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控制理论与应用（英文版） 2010年第1期8卷 27-33页

作者： Qiang ling Michael D. LEMMON hai LIN Department of Automation University of Science and Technology of China Hefei Anhui 230027 China Department of Electrical Engineering University of Notre Dame Notre Dame IN 46556 USA Department of Electrical and Computer Engineering National University of Singapore Singapore 117576

This paper studies the stabilizability of an n-dimensional quantized feedforward nonlinear system. The state of that system is first quantized into a finite number of bits, and then sent through a digital network to the controller. We want to minimize the number of transmitted bits subject to maintaining asymptotic stability. In the prior literature, n bits are used to stabilize the n-dimensional system by assigning one bit to each state variable （dimension）. Under the stronger assumption of global Lipschitz continuity, this paper extends that result by stabilizing the system with a single bit. Its key contribution is a dynamic quantization policy which dynamically assigns the single bit to the most ＂important＂ state variable. Under this policy, the quantization error exponentially converges to 0 and the stability of the system can, therefore, be guaranteed. Because i is the minimum number of quantization bits （per sampling step）, the proposed dynamic quantization policy achieves the minimum stabilizable bit number for that n-dimensional feedforward nonlinear system.

关键词： Quantization Stability Nonlinear Feedforward

Efficacy and safety of moderately steatotic donor liver in transplantation

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Hepatobiliary & Pancreatic Diseases International 2009年第1期8卷 29-33页

作者： Gao, Feng Xu, Xiao ling, Qi Wu, Jian Zhou, Lin xie, hai-Yang Wang, Hui-Ping Zheng, Shu-Sen Zhejiang Univ Sch Med Affiliated Hosp 1 Div Hepatobiliary & Pancreat Surg Hangzhou 310003 Zhejiang Peoples R China

BACKGROUND: The discrepancy between available livers and requests for transplantation has forced many centers to use marginal donors in order to expand the donor pool. Many previous studies have demonstrated controversial results of the application of steatotic liver grafts. The aim of the present study was to summarize our experience and evaluate the value of steatotic liver grafts. METHODS: The clinical and follow-up data of 24 adult patients receiving moderately steatotic liver grafts (30%-60%) from May 2003 to June 2005 (group 1) were analyzed. After matching for age, gender, model for end-stage liver diseases score and cold ischemia time, another 24 patients receiving liver grafts with steatosis less than 30% were chosen as the control group (group 2). The patient and graft outcomes were compared between the two groups. RESULTS: No difference of liver and kidney functions in the first post-transplant week was found between the two groups (P > 0.05). Neither the incidence of early allograft dysfunction and acute kidney injury nor the patient survival rates (3 months, 6 months and 1 year) showed differences between groups 1 and 2 (P > 0.05). CONCLUSION: Moderately steatotic liver grafts provide adequate function in the first phase after transplantation and can be used for transplantation.

关键词： liver steatosis liver transplantation survival liver function