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Fast and accurate analysis of electromagnetic scattering from targets situated in dielectric half space

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Journal of Systems Engineering and Electronics 2010年第1期21卷 37-40页

作者： Yongpin Chen Zaiping nie jun Hu School of Electronic Engineering University of Electronics Science and Technology of China Chengdu 610054 E R. China

Electromagnetic scattering from targets situated in half space is solved by applying fast inhomogeneous plane wave algorithm combined with a tabulation and interpolation method. The integral equation is set up based on derivation of dyadic Green＇s functions in this environment. The coupling is divided into nearby region and well-separated region by grouping. The Green＇s function can be divided into two parts： primary term and reflected term. In the well-separated region, the two terms are both expressed as Sommerfeld integral, which can be accelerated by deforming integral path and taking interpolation and extrapolation. For the nearby region, the direct Sommerfeld integral makes the filling of impedance matrix time-expensive. A tabulation and interpolation method is applied to speed up this process. This infinite integral is pre-computed in sampling region, and a two-dimensional table is then set up. The impedance elements can then be obtained by interpolation. Numerical results demonstrate the accuracy and efficiency of this algorithm.

关键词： electromagnetic scattering dielectric half space fast inhomogeneous plane wave algorithm tabulation and interpolation.

Fast computation of scattering from 3D complex structures by MLFMA

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Journal of Systems Engineering and Electronics 2008年第5期19卷 872-877页

作者： Hu jun nie Zaiping Que Xiaofeng Meng Min Coll. of Electronic Engineering Univ. of Electronic Science and Technology of China Chengdu 610054 P. R. China

This paper introduces the research work on the extension of multilevel fast multipole algorithm （MLFMA） to 3D complex structures including coating object, thin dielectric sheet, composite dielectric and conductor, cavity. The impedance boundary condition is used for scattering from the object coated by thin lossy material. Instead of volume integral equation, surface integral equation is applied in case of thin dielectric sheet through resistive sheet boundary condition. To realize the fast computation of scattering from composite homogeneous dielectric and conductor, the surface integral equation based on equivalence principle is used. Compared with the traditional volume integral equation, the surface integral equation reduces greatly the number of unknowns. To computc conducting cavity with electrically large aperture, an electric field integral equation is applied. Some numerical results are given to demonstrate the validity and accuracy of the present methods.

关键词： impedance boundary condition equivalence theory surface integral equation dielectric cavity.

How to do when PFO closure failed under routine guidance:the first clinical experience for PFO closure

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Journal of Geriatric Cardiology 2021年第1期18卷 89-90页

作者： Ying ZHOU jun-Gang nie Department of Pharmacy the First Affiliated Hospital of Nanchang UniversityNanchangChina Department of Cardiology the First Affiliated Hospital of Nanchang UniversityNo.17 YongwaizhengjieDonghu DistrictNanchangChina

Patent foramen ovale(PFO)is the most common abnormality of fetal origin and is affecting approximately 25%of the worldwide adult population.[1]During the past two decades,instead of surgical closure,catheter-based procedures to close the PFO have become widely used among *** guidance with fluoroscopy,transesophageal echocardiography(TEE)or intracardiac echocardiography have been the mainstream technique to ensure a safe and successful procedure.

关键词： PFO routine closure

Multifunctional nanoparticle systems for combined chemo- and photothermal cancer therapy

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Frontiers of Materials Science 2013年第2期7卷 118-128页

作者： Hai WANG Yu-Liang ZHAO Guang-jun nie CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety National Center for Nanoscience and Technology (NCNST) 11 Beiyitiao Zhongguancun Beijing 100190 China CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China

Hyperthermia has long been considered as an adjuvant therapy for treating various diseases. Cancer treatment exploiting hyperthermia shows great clinical potential for a wide range of tumors. Importantly, the efficacy of hyperthermal therapy has recently been enhanced by the development of functional nanomaterials. The unique physicochemical properties of nanomaterials afford the specific localization of hyperthermia to primary tumors and early-stage cancers. In particular, due to their high rate of light-to-heat conversion and their capacity to be activated by tissue-penetrating electromagnetic radiation, near-infrared （NIR） light-absorbing plasmonic nanomaterials have attracted considerable attention as candidates for noninvasive photothermal therapy. The purpose of this article is to provide a overview on the current development in multifunctional nanomaterials capable of combined hyperthermia-chemotherapy delivery.

关键词： combination therapy multifunctional nanoparticle drug delivery hyperthermia photothermal therapy

Anti-microbial Activities of Protic Ionic Liquids Studied with Microcalorimetry Method

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Chemical Research in Chinese Universities 2011年第4期27卷 651-654页

作者： DING Yang-jun nie Yi YU You College of Chemistry and Chemical Engineering Qufu Normal University Qufu 273165 P. R. China

The anti-microbial activities of seven protic ionic liquids（ILs） against Escherichia coli and Staphylococcus aureus were studied by a micro-calorimetric method at 310 *** bacterial growth rate constants were determined based on the bacterial growth power-time curves,andminimum biocidal concentrations were *** results indicate that the protic ILs studied show inhibitory activities on the bacteria,implying a potential eco-toxicity to the microorganisms in the water ***,the inhibition effect of ionic liquids is related to the structure of the cation and anion of protic *** type of proactive approach could aid in the assessment of the greenness of ILs to be used in the future.

关键词： Microcalorimetry Ionic liquid Escherichia coli Staphylococcus aureus Inhibitory activity

A natural component as initiator for photopolymerization of 1,6-hexanedioldiacrylate

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Chinese Chemical Letters 2007年第6期18卷 750-753页

作者： Su Qing Shi Hong Gao jun nie Key Laboratory of Biomedical Polymers of Ministry of Education Department of ChemistryWuhan UniversityWuhan 430072China State Key Laboratory of Chemical Resource Engineering and College of Material Science and Engineering Beijing University of Chemical TechnologyBeijing 100029China

1,3-Benzodioxole (BDO) as a simple model compound for the BDO derivatives from natural plant was used as coinitiator for p-chlorobenzophenone (CBP) and initiator for UV photopolymerization of 1,6-hexanedioldiacrylate (HDDA), respectively. The results showed that, BDO was an effective coinitiator for CBP. Although BDO as initiator led to very low rate of polymerization, it was still meaningful for the photocuring field.

关键词： 1,3-Benzodioxole Coinitiator Initiator Photopolymerization FTIR

Fast track clinical pathway implications in esophagogastrectomy

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World Journal of Gastroenterology 2009年第4期15卷 496-501页

作者： Ke Jiang Lin Cheng Jian-jun Wang Jin-Song Li jun nie Department of Thoracic Surgery Union Hospital Tongji Medical CollegeHuazhong University of Science and Technology Wuhan430022 Hubei Province China Department of Anesthesiology Union HospitalTongji Medical College Huazhong University of Science and Technology Wuhan 430022 Hubei Province China

AIM： To investigate the feasibility of fast track clinica pathway for esophageal tumor resections. METHODS： One hundred and fourteen patients with esophageal carcinoma who underwent esophagogastrectomy from January 2006 to October 2007 in our department were studied. Fast track clinical pathway included analgesia control, fluid infusion volume control, early ambulation and enteral nutrition. Nasogastric tube was removed 3 d after operation and chest tube was removed 4 d after operation as a routine, and full liquid diet 5 d after operation. RESULTS： Among 114 patients （84 men and 30 women）, 26 patients underwent fast track surgery, including 17 patients over 65 years old and 9 under 65 （P = 0.014）; 18 patients who had preoperative complications could not bear fast track surgery （P 〈 0.001）. No significant differences in tolerance of fast track surgery were attributed to differences in gender, differentiated degree or stage of tumor, pathological type of tumor, or operative incision. The median length of hospital stay was 7 d （5-28 d）, 4% patients were readmitted to hospital within 30 d of discharge. Three patients died and postoperative mortality was 2.6%. All 3 patients had no determinacy to fast track surgery ***： The majority of patients with esophageal carcinoma can tolerate fast track surgery. Patients younger than 65 or who have no preoperative diseases have the best results. Median length of hospital stay has been reduced to 7 d.

关键词： Fast track surgery Esophageal carcinoma Esophagogastrectomy

Preparation and characterization of crosslinked chitosan-based nanofibers

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Chinese Chemical Letters 2007年第1期18卷 118-120页

作者： Ying Shah Zhou Dong Zhi Yang jun nie Key Laboratory of Biomedical Polymers of Ministry of Education Department of Chemistry Wuhan University Wuhan 430072 China State Key Laboratory of Chemical Resource Engineering and College of Material Science and Engineering Beijing University of Chemical Technology Beijing 100029 China

Crosslinked chitosan-based nanofibers were successfully prepared via clectrospinning technique with heat mediated chemical crosslinldng followed. The structure, morphology and mechanical property of nanofibers were characterized by attenuated total reflection-Fourier transform infrared spectroscopy （ATR-FTIR）, scanning electron microscopy （SEM）, Instron rnachine, respectively. The results showed that, nanofibers exhibited a smooth surface and regular morphology, and tensile strength of nanofibers improved with increasing of triethylene glycol dimethacrylate （TEGDMA） content.

关键词： Chitosan Nanofiber Eiectrospinning Crosslinking TEGDMA

High-refractive index acrylate polymers for applications in nanoimprint lithography

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Chinese Chemical Letters 2020年第1期31卷 256-260页

作者： Yunhui Tang Stefano Cabrini jun nie Carlos Pina-Hernandez State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029China The Molecular Foundry LBNLBerkeleyCA 94702United States aBeam Technologies Castro ValleyCA 94546United States

The development of polymeric optical materials with a higher refractive index,transparency in the visible spectrum region and easier processability is increasingly desirable for advanced optical applications such as microlenses,image sensors,and organic light-emitting *** acrylates have a low refractive index(around 1.50)which does not meet the high perfo rmance requirements of advanced optical *** this research,three novel acrylates were synthesized via a facile one-step approach and used to fabricate optical transparent *** of the polymers reveal good optical properties including high transparency(≥90%)in the visible spectrum region and high refractive index values(1.6363)at 550 ***,nanostructures of these acrylate polymers with various feature sizes including nanogratings and photonic crystals were successfully fabricated using nanoimprint *** results indicate that these acrylates can be used in a wide range of optical and optoelectronic devices where nanopatterned films with high refractive index and transparency are required.

关键词： High refractive index Acrylate Facile synthesis Nanostructure Nanoimprint lithography