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Precipitation of sigma phase in duplex stainless steel and recent development on its detection by electrochemical potentiokinetic reactivation:A review

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Corrosion Communications 2021年第2期2卷 41-54页

作者： rongguang wang Department of Mechanical Systems Engineering Hiroshima Institute of Technology

The precipitation of sigma(σ) phase in the ferritic/austenitic duplex steel(DSS) results in the deterioration of mechanical intensity and corrosion resistance. After overviewing the temperature-time precipitation kinetic of secondary phases, this paper summarized the precipitation behavior of σ phase from the aspects of the mechanism, nucleation site, orientation relation, cooling rate, and phase composition. It is articulated that the preformed nitrides, carbides, and χ phase play the role of preparing regions containing low content C and N at their surroundings for σ nucleation rather than as the role as the nucleus of σ phase. Finally, the detection methods ofσ phase including the recent use of electrochemical potentiokinetic reactivation(EPR) were introduced, and a prospect with the critical issues on futural DSS research was summarized.

关键词： Ferritic/austenitic duplex steel Sigma phase Precipitation Corrosion resistance Electrochemical potentiokinetic reactivation (EPR)

Water modeling of mold powder entrapment in slab continuous casting mold

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Journal of University of Science and Technology Beijing 2007年第5期14卷 399-404页

作者： Qiaotong Lu rongguang Yang Xinhua wang Jiongming Zhang Wanjun wang Metallurgical and Ecological Engineering School University of Science and Technology Beijing Beijing 100083 China

The optimal parameters were determined by the water modeling of slab casting. It was found that there are mainly three types of mold powder entrapment in slab continuous casting, i.e., the entrapment caused by the shearing flow near the narrow face of mold, the entrapment caused by vortexes around the submerged entry nozzle （SEN）, and the entrapment caused by the Ar bubbling. Both the velocity of the surface flow and the level fluctuation of the liquids are enlarged with increasing the casting speed, reducing the submersion depth of SEN, decreasing the downward angles of the nozzle outlets, and increasing the Ar flowrate, all of which increase the tendency of mold powder entrapment. Among the four above-mentioned factors, casting speed has the largest effect.

关键词： continuous casting slab mold mold powder water model

Microstructure of Ni-based hard facing alloy and its polarization behavior in aqueous solution with different pH and chloride concentration

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Corrosion Communications 2021年第3期3卷 1-9页

作者： rongguang wang Yasunori Satake Yunhui Li Tian Xiao Masaharu Honda Hideki Fukuhara Seiya Hiramatsu Department of Mechanical Systems Engineering Hiroshima Institute of Technology Graduate School of Science and Technology Hiroshima Institute of Technology Nikko Kosan Co. Ltd. Technical Development Department The Japan Steel Works Ltd.Aki-Ku

To clarify the corrosion behavior of Ni-based hard facing alloy Colmonoy 56 and the preferential dissolution detail at the micrometer scale, the microstructure and the elemental distribution of a rod were analyzed, followed with the polarization measurement in aqueous solution with different p H and Na Cl concentrations. This rod has Fe-, Si-, and Cr-solutioned [Ni] matrix with heterogeneously dispersed secondary phases of Cr23C6, CrB, Cr2B, and Cr5B3. The polarization curve largely changed with different p H: active in acid solution and passive in neutral and alkaline solution. The strongest passivation appeared at p H = 11. Cl-promoted the corrosion attack to the [Ni] matrix. In the case of pH = 11, Cl-caused the fast climb of anodic current from passivation at a less noble potential. Preferential dissolution of the [Ni] matrix occurred in most solutions, except in the case of pH = 14 without Na Cl, in which the secondary phases preferably dissolved.

关键词： Ni-based hard facing alloy Colmonoy 56 Microstructure Polarization pH Chloride concentration

Identification of two novel missense WFS1 mutations,H696Y and R703H,in patients with non-syndromic low-frequency sensorineural hearing loss

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Journal of Genetics and Genomics 2011年第2期38卷 71-76页

作者： Yi Sun Jing Cheng Yanping Lu Jianzhong Li Yu Lu Zhanguo Jin Pu Dai rongguang wang Huijun Yuan Institute of Otolaryngology Chinese PLA General Hospital Beijing 100853 China Department of Otolaryngology Chinese PLA Wuhan General Hospital of Guangzhou Military Command Wuhan 430070 China Department of Obstetrics and Gynecology Chinese PLA General Hospital Beijing 100853 China Fuzhou General Hospital of Nanjing Military Command PLA Fuzhou 350025 China

Non-syndromic low-frequency sensorineural hearing loss （LFSNHL） is an unusual type of hearing loss in which frequencies ≤2000 Hz predominantly are affected. To date, different mutations in two genes, DIAPHI and WFSI, have been found to be associated with LFSNHL. Here, we report a five-generation Chinese family with postlingual and progressive LFSNHL. We mapped the disease locus to a 2.5 Mb region on chromosome 4p16 between markers SNP_A-2167174 and D4S431, overlapping with the DFNA6/14/38 locus. Sequencing of candidate gene revealed a heterozygous c.2086C〉T substitution in exon 8 of WFS1, leading to p.H696Y substitution at the C-terminus of Wolframin （WFS 1）. In addition, we performed mutational screening of WFS1 in 37 sporadic patients, 7--50 years of age, with LFSNHL. We detected a heterozygous c.2108G〉A substitution in exon 8 of WFSI, leading to p.R703H substitution in a patient. The H696 and R703 in WFS1 are highly conserved across species, including human, orangutan, rat, mouse, and frog （Xenopus）, Sequence analysis demonstrated the absence of c.2086C〉T or c.210gG〉A substitutions in the WFS1 genes among 200 unrelated control subjects of Chinese background, supporting the hypothesis that they represent causative mutations, and not rare polymorphisms. Our data provide additional molecular and clinical information for establishing a better genotype-phenotype correlation for LFSNHL.

关键词： DFNA6/14/38 WFS1 Mutation Low-frequency hearing loss

Study of a GaAs MESFET Model with Ultra-Low Power Consumption

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Advances in Manufacturing 1998年第3期 43-47页

作者： wang Wenqi wang rongguang Chen Baolin wang Tong (School of Communication and Information Engineering)

A model of enhancement mode GaAs MESFET (EFET) for low power consumption and low noise applications has been obtained by using a small signal equivalent circuit whose component values are derived from the physical parameters and the bias condition. The dependence of the RF performance and DC power consumption on physical, material and technological parameters of EFET is also studied. The optimum range of the physical parameters is given which is useful for the design of active device of ultra low power consumption MMIC.

关键词： EFET ultra low power consumption

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知识社会与图书馆立法

图书与情报 2009年第2期 76-80页

作者：王蓉光西华师范大学图书馆四川南充637009

人类社会已进入信息社会,知识迅速地转化为社会生产力,并对社会发展产生了重要作用。图书馆作为知识积累的集散地,是理性的人类最能获得社会知识和信息之所在。然而图书馆构造制度中的无序状态,使人类不能充分地运用已有的藏书使自身获... 详细信息

人类社会已进入信息社会,知识迅速地转化为社会生产力,并对社会发展产生了重要作用。图书馆作为知识积累的集散地,是理性的人类最能获得社会知识和信息之所在。然而图书馆构造制度中的无序状态,使人类不能充分地运用已有的藏书使自身获得知识的养料。因此,图书馆法律应当予以准确定位、并予以专门研究,使其具有法律体系的结构特点。

关键词：信息社会人类知识图书馆立法立法体系立法结构

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不良发声行为性嗓音疾病的诊断及治疗原则

中华耳鼻咽喉头颈外科杂志 2017年第7期52卷 552-557页

作者：于萍王荣光解放军总医院耳鼻咽喉头颈外科 100853

不良发声行为性嗓音疾病是临床上最常见的导致嗓音障碍（嘶哑）的原因.不良发声行为（unhealthy phonation）是指采用不正确的方法（嗓音误用）和/或不良发声习惯（嗓音滥用）进行发声（说话）,可以来自呼吸方法、发声位置及共鸣腔应用... 详细信息

不良发声行为性嗓音疾病是临床上最常见的导致嗓音障碍（嘶哑）的原因.不良发声行为（unhealthy phonation）是指采用不正确的方法（嗓音误用）和/或不良发声习惯（嗓音滥用）进行发声（说话）,可以来自呼吸方法、发声位置及共鸣腔应用等方面的不正确.其发生和形成与患者的职业、性格（日常说话习惯）及生物因素等有着密切的关系[1].

关键词：嗓音疾病行为性发声治疗原则诊断说话习惯嗓音障碍呼吸方法

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鼻内镜下鼻腔鼻窦内翻性乳头状瘤切除术

临床耳鼻咽喉头颈外科杂志 2008年第11期22卷 506-508页

作者：王刚陈雷王荣光中国人民解放军总医院耳鼻咽喉-头颈外科北京100853

目的：探讨鼻内镜下鼻腔鼻窦内翻性乳头状瘤切除术的疗效及应用价值。方法：回顾性分析1999年7月-2005年4月诊治的有完整随访资料的40例经鼻内镜手术治疗的鼻腔鼻窦内翻性乳头状瘤患者的临床资料。结果：所有病变均一次完全手术切除,5... 详细信息

目的：探讨鼻内镜下鼻腔鼻窦内翻性乳头状瘤切除术的疗效及应用价值。方法：回顾性分析1999年7月-2005年4月诊治的有完整随访资料的40例经鼻内镜手术治疗的鼻腔鼻窦内翻性乳头状瘤患者的临床资料。结果：所有病变均一次完全手术切除,5例患者接受术后放疗。无严重并发症发生。术后随访24-93个月,平均45.1个月,6例复发,其中3例恶变,3例死亡。复发时间18-58个月,平均37.3个月。结论：经鼻内镜手术治疗鼻腔鼻窦内翻性乳头状瘤安全、有效、微创,彻底切除肿瘤、术后定期随访是治疗成功的关键。

关键词：内翻性乳头状瘤内镜检查手术鼻腔鼻窦

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鼻中隔恶性肿瘤的手术径路探讨

临床耳鼻咽喉科杂志 2005年第14期19卷 636-637页

作者：王进王荣光杨伟炎解放军总医院耳鼻咽喉科北京100853

目的:探讨鼻中隔恶性肿瘤的手术径路.方法:16例中,鼻侧切开术8例、鼻内镜下手术5例、面中部揭翻术2例、经腭入路1例.并对其病理学特征、手术径路及预后进行回顾性分析.结果:16例中,鼻中隔鳞状细胞癌7例、腺样囊性癌4例、恶性黑色素瘤3... 详细信息

目的:探讨鼻中隔恶性肿瘤的手术径路.方法:16例中,鼻侧切开术8例、鼻内镜下手术5例、面中部揭翻术2例、经腭入路1例.并对其病理学特征、手术径路及预后进行回顾性分析.结果:16例中,鼻中隔鳞状细胞癌7例、腺样囊性癌4例、恶性黑色素瘤3例、腺癌1例、黏液表皮样癌1例.术后随访1～10年,其中失访1例,死亡2例,带瘤生存3例,无瘤生存10例.病死率为12.5%,带瘤生存率为18.8%,无瘤生存率为62.5%.结论:鼻中隔恶性肿瘤手术径路应根据病变范围、患者年龄采取不同的术式.如病变局限于鼻中隔前下部或后部,则鼻内镜下切除;如病变涉及鼻中隔全部或累及鼻腔其他部位,则以鼻侧切开为宜;若患者年龄较小,则以面中部揭翻或经腭入路为宜.

关键词：鼻中隔鼻肿瘤外科手术预后