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Preparation of Nano-crystalline Tungsten Carbide Thin Film by Magnetron Sputtering and Their Electrocatalytic Property for PNP Reduction

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Chinese Chemical Letters 2005年第11期16卷 1539-1542页

作者： Hua Jun ZHENG jian guo huang Chun An MA Department of Applied Chemistry Research Center of Nano Science ＆ Technology Zhejiang University of Technology Hangzhou 310032

Nano-crystalline tungsten carbide thin films were deposited on Ni substrates by magnetron sputtering using WC as target material. The crystal structure and morphology of the thin films were characterized by X-ray diffraction （XRD） and scanning electron microscopy （SEM） Electrochemical investigations showed that the electrode of the thin film exhibited higher electrocatalytic activity in the reaction of p-nitrophenol （PNP） reduction. FT-IR analysis indicated that p-aminophenol （PAP） was synthesized after two step reduction of PNP on nano-crystalline tungsten carbide thin film electrode.

关键词： Tungsten carbide nano-crystalline electrocatalyst p-nitrophenol.

Separation occurring during the drop weight tear test of thick-walled X80 pipeline steels

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International Journal of Minerals,Metallurgy and Materials 2013年第8期20卷 741-747页

作者： Qing-yun Sha Da-hang Li guo-jian huang Ju Guan Technology Center Anshan Iron and Steel Group Company

A separation phenomenon occurring during the drop weight tear test of commercial thick-walled API （American Petroleum Institute） X80 strip steel was investigated in this work. Microstructural analysis showed that the band structure of bainite elongated along the rolling direction works as the initiation sites of separation. The propagation of separation can be promoted not only by the occurrence of the band structure of martensite/austenite constituent, prior austenite grain boundaries, and elongated bainite, but also by fine acicular ferrite and bainite. Wide separation formed in the former case, while the narrow one appeared in the latter case. acicular ferrite in thick-walled X80 pipeline steel in order Some methods were proposed to obtain fine and homogeneous to minimize the occurrence of separation.

关键词： pipeline steel drop weight tear test separation cracking band structure

THE SCHWARZ CHAOTIC RELAXATION METHOD WITH INEXACT SOLVERS ON THE SUBDOMAINS

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Journal of Computational Mathematics 1999年第2期17卷 125-132页

作者： jian-guo huang(Department of Applied Mathematics, Shanghai Jiao Tong University,Shanghai 200240, China) 上海交通大学应用数学系上海

In this paper, a S-CR method with inexact solvers on the subdomains is presented, and then its convergence property is proved under very general conditions. This result is important because it guarantees the effective... 详细信息

关键词： S-CR method chaotic algorithm inexact solvers

ON THE DOMAIN DECOMPOSITION METHOD FOR MORLEYELEMENT-FROM WEAK OVERLAP TO NONOVERLAP

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Journal of Computational Mathematics 1999年第6期17卷 615-628页

作者： jian-guo huang(Department of Applied Mathematics, Shanghai Jiao Tong University, Shanghai 200240,China) Shanghai Jiao Tong Univ Dept Math Appl Shanghai 200240 Peoples R China

In this paper, following our original ideas[9], we first consider a weakly overlapping additive Schwarz preconditioner according to the framework of [2] for Morley element and show that its condition number is quasi-optimal; we then analyze in detail the structure of this preconditioner, and after proper choices of the inexact solvers, we obtain a quasi-optimal nonoverlapping domain decomposition preconditioner in the last. Compared with [12], [13], it seems that according to this paper's procedure we can make out more thoroughly the relationship between overlapping and nonoverlapping domain decomposition methods for nonconforming plate elements, and certainly, we have also proposed another formal and simple strategy to construct nonoverlapping domain decomposition preconditioners for nonconforming plate elements.

关键词： Morley element domain decomposition weak overlap

Underwater acoustic communication and the general performance evaluation criteria

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Frontiers of Information Technology & Electronic Engineering 2018年第8期19卷 951-971页

作者： jian-guo huang Han WANG Cheng-bing HE Qun-fei ZHANG Lian-you JING School of Marine Science and Technology Northwestern Polytechnical University School of Information and Communication Engineering Dalian University of Technology

Driven by the huge demand to explore oceans, underwater wireless communications have been rapidly developed in the past few decades. Due to the complex physical characteristics of water, acoustic wave is the only media available for underwater wireless communication at any distance. As a result, underwater acoustic communication(UAC) is the major research field in underwater wireless communication. In this paper, characteristics of underwater acoustic channels are first introduced and compared with terrestrial communication to demonstrate the difficulties in UAC research. To give a general impression of the UAC, current important research areas are mentioned. Furthermore, different principal modulation-based schemes for short-and medium-range communications with high data rates are investigated and summarized. To evaluate the performance of UAC systems in general,three criteria are presented based on the research publications and our years of experience in high-rate short-to medium-range communications. These three criteria provide useful tools to generally guide the design and evaluate the performance of underwater acoustic communication systems.

关键词： Underwater acoustic communication Underwater acoustic channels High data rate Communication range Bandwidth efficiency General evaluation criterion

Multi-slice spiral computed tomography in diagnosing unstable pelvic fractures in elderly and effect of less invasive stabilization

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World Journal of Clinical Cases 2022年第14期10卷 4470-4479页

作者： jian-guo huang Zhi-Yuan Zhang Liang Li Guang-Bao Liu Xiong Li Department of Orthopedics Sanya Hospital of Traditional Chinese MedicineSanya 572000Hainan ProvinceChina Department of Orthopedics Xi’an Honghui HospitalXi’an 710024Shaanxi ProvinceChina Department of Radiology Sanya Hospital of Traditional Chinese MedicineSanya 572000Hainan ProvinceChina Department of Traumatic Orthopedics Sports Medicine Yan'an Hospital of Traditional Chinese MedicineYan'an 716000Shaanxi ProvinceChina

BACKGROUND Older people are more likely to experience pelvic fractures than younger ***-slice spiral computed tomography(CT)uses three-dimensional(3D)reconstruction technology to generate 3D images that can clearly demonstrate the 3D space of fractures and detect fractures at a higher *** To investigate the clinical value of multi-slice spiral CT 3D reconstruction in the diagnosis of unstable pelvic fractures in the elderly as well as the effect of less invasive *** A total of 86 patients with unstable pelvic fractures treated between March 2016 and March 2019 underwent femoral supracondylar bone traction before *** radiography and multi-row spiral CT were performed successively once the patient’s vital signs and hemodynamic indices were *** processing of the original data was performed to obtain 3D reconstruction images and determine the vertical displacement of the *** basic or complete reduction,minimally invasive internal fixation using hollow lag screws was *** detection rates of fracture location and classification by X-ray and CT reconstruction were *** were divided into two groups according to the presence or absence of preoperative 3D reconstruction to compare postoperative reduction,wound healing time,fracture healing time,hospitalization time,visual analog scale(VAS)score,poor internal fixation,and functional *** The diagnostic coincidence rates of X-rays for pubic symphysis,ilium wing,sacroiliac periarticular,and sacral fractures were lower than those of CT *** coincidence rate of CT reconstruction in the clinical classification of pelvic fractures was 100%,whereas 11 cases were misdiagnosed by X-ray;the total coincidence rate was 87.21%.The total excellent and good rates of postoperative reduction were significantly higher in the study group than in the control group(P<0.05).The wound healing,fracture healing,and hospitalization times wer

关键词： Multi-slice spiral computed tomography Three-dimensional reconstruction Unstable pelvic fracture Minimally invasive internal fixation Diagnostic value

Skarn mineralogy and its geological significance for the Tayuan (Cu-Mo)-Pb-Zn deposit, northern Daxinganling metallogenic belt

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Acta Geochimica 2017年第1期36卷 89-101页

作者： Chao Li Tao Ren jian-guo huang Run-Sheng Han He-Jun Yin Hong-Yang Zhou Zhi-Hong Feng Kunming University of Science and Technology Kunming 650093 China Yunnan Chihong Zinc & Germanium Limited Liability Company Kunming 650000 China Daxinganling Yunye Mining Development Limited Liability Company Jiagedaqi 165021 China

The Tayuan(Cu-Mo)-Pb-Zn deposit is located in the northern part of Daxinganling,NE *** ore body occurs in the skarn *** skarn minerals mainly include garnet,pyroxene,epidote and *** microprobe analysis shows that the end member of garnet is mainly andradite(Ad_(62-97)Gr_(11-45),the pyroxene is mainly diopside,and epidote is mainly *** characteristics indicate that the Tayuan polymetallic skarn deposit is mainly calcareous *** the content zonation can be observed in *** one garnet crystal,content is shifty from the core to the *** general,the iron content in the core is higher than in the *** content in the garnet shows that the garnet in the Tayuan deposit formed from weak oxidation in alkaline environment with the oxygen fugacity increasing,suggesting that the hydrothermal fluid evolved from an acidic to a slight alkaline *** the Tayuan polymetallic deposit,the ratio of Mn/Fe in pyroxene is about 1.3,and of Mg/Fe,it is about *** components of garnet in the Tayuan deposit plot in the field of the typical skarn Zn,Cu,Mo deposits in the world.

关键词： Skarn minerals (Cu Mo) Pb Zn deposit Physical chemical condition Tayuan

Aflibercept combined with triamcinolone acetonide in the treatment of diabetic macular edema:optical coherence tomography and optical coherence tomography angiography

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International Journal of Ophthalmology(English edition) 2024年第4期17卷 670-675页

作者： De-Shuang Li Hong-Xia Liao Chuan-He Zhang jian-guo huang Wei Chen Jing-Lin Zhang Bo Qin Shenzhen Aier Eye Hospital Aier Eye HospitalJinan UniversityShenzhen 518031Guangdong ProvinceChina Department of Ophthalmology the University of Hong Kong-Shenzhen HospitalShenzhen 518000Guangdong ProvinceChina Guangzhou Aier Eye Hospital Jinan UniversityGuangzhou 510040Guangdong ProvinceChina

AIM:To analyze the relationship between optical coherence tomography(OCT)and OCT angiography(OCTA)imaging in patients with diabetic macular edema(DME)who are treated with a combination of aflibercept and triamcinolone acetonide(TA).METHODS:A total of 76 eyes newly diagnosed DME were included in this *** were randomly assigned to receive either aflibercept or a combination of aflibercept and *** once a month for a total of three *** macular thickness(CMT),number of hyperreflective foci(HRF),height of subretinal fluid(SRF),and area of foveal avascular zone(FAZ)were evaluated using OCT and OCTA at baseline and after each monthly ***:Both groups showed improvement in best corrected visual acuity(BCVA)and reduction in macular edema after treatment,and the difference in BCVA between the two groups was statistically significant after each treatment(P<0.05).The difference in CMT between the two groups was statistically significant after the first two injections(P<0.01),but not after the third injection(P=0.875).The number of HRF(1mo:7.41±8.25 vs 10.86±7.22,P=0.027;2mo:5.33±6.13 vs 9.12±8.61,P=0.034;3mo:3.58±3.00 vs 6.37±5.97,P=0.007)and height of SRF(1mo:82.39±39.12 vs 105.77±42.26μm,P=0.011;2mo:36.84±10.02 vs 83.59±37.78μm,P<0.01;3mo:11.57±3.29 vs 45.43±12.60μm,P<0.01)in combined group were statistically significant less than aflibercept group after each injection,while the area of FAZ showed no significant change before and after treatment in both ***:The combination therapy of aflibercept and TA shows more significant effects on DME eyes with decreased HRF and ***,both aflibercept and combination therapy show no significant change in the area of FAZ.

关键词： diabetic macular edema optical coherence tomography optical coherence tomography angiography hyperreflective foci subretinal fluid foveal avascular zone aflibercept

Patterns of Apoplectic Dysarthria and Acupuncture Treatment

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Journal of Acupuncture and Tuina Science 2003年第5期1卷 22-23页

作者： ZHANG jian-bin huang guo-qi Affiliated Hospital of Nanjing Railway Medical College Jiangsu China 210009

In accordance with the feature of apoplectic dysarthria, it is divided into three types of labial pattern, lingual pattern and laryngeal pattern. The therapeutic methods are respectively explained with case examples. ... 详细信息

关键词： Cerebrovascular Disorders Acupuncture Therapy Dysarthria