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Microstructural evolution and grain growth mechanism of pre-twinned magnesium alloy during annealing

Journal of Magnesium and Alloys 2021年第4期9卷 1238-1251页

作者： Ye Jin Kim Jong Un Lee young Min Kim Sung Hyuk par School of Materials Science and Engineering Kyungpook National JJniversityDaegu 41566Republic of Korea Implementation Research Division Korea Institute of Materials ScienceChanson 51508Republic of Korea

The microstructural evolution and underlying grain growth mechanism of a{1012}-twin-containing Mg alloy during annealing are investigated through quasi in situ electron backscatter diffraction measurements of a rolled AZ31 alloy subjected to precompression along the rolling direction(RD).The precompressed material shows a par.ially twinned structure consisting of a twinned region and a residual matrix region,and this structure changes to an almost twin-free structure consisting of grown grains with serrated grain boundaries in twinand matrix-originated regions after annealing at 250℃ for 1 *** addition,the average grain size almost doubles and the internal strain energy decreases significantly after *** microstructural variations are induced mainly by grain growth through the strain-induced migration of high-angle grain boundaries without the movement of twin *** twinned region of the precompressed material has higher stored strain energy than the residual matrix region because the crystallographic orientation of the former region is favorable for basal slip and because of the occurrence of the dislocation transmutation reaction in the *** reducing the total strain energy accumulated in the precompressed material,the residual matrix region—having lower stored strain energy—preferentially grows while consuming the twinned regions formed in the surrounding grains during *** a result,the area fraction of grains with a matrix texture increases whereas that of grains with a twin texture decreases after *** twin texture intensity increases significantly and this texture becomes more concentrated along the RD because the highly RD oriented twins tend to grow during annealing on account of their fairly low stored strain energy.

关键词： Magnesium Twin Annealing Grain growth Strain energy

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Giant Hydronephrosis in sourou Sanou University Teaching Hospital of Bobo-Dioulasso (Burkina-Faso). Two Cases Reports and Literature Review

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Open Journal of Urology 2018年第1期8卷 17-24页

作者： Timothée Kambou Adama Ouattara Abdoul Karim par. Drissa S. Barro Clotaire Yaméogo Abdoulaye Kodo Aristide F. Kabore Urology Division Souro Sanou University Teaching Hospital Bobo-Dioulasso Burkina Faso Anesthesiology and Resuscitation Division Souro Sanou University Teaching Hospital Bobo-Dioulasso Burkina Faso Urology Division Yalgado Ouedraogo University Teaching Hospital Ouagadougou Burkina Faso

Giant Hydronephrosis (GH) is a rare condition in urology literature and defined as a pelvicalyceal system of kidney containing more of 1000 ml of urine. This condition is not so rare in our setting. We herein, reported two cases of giant hydronephrosis, seen in two young patients respectively with 5 and 9 years old and their collecting system containing 4000 ml and 5000 ml of urines respectively. Only simple nephrectomy was performed for the two cases with renal function impairment and the post operative course was uneventful. Our purpose through these cases reports is to discuss diagnosis features and management of such condition in our setting, a context of low income countries as Burkina-Faso where diagnosis tool and further investigation are not always available.

关键词： Giant Hydronephrosis Child Simple Nephrectomy

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Lapar.scopic par.ial cystectomy with mucosal stripping of extraluminal duodenal duplication cysts

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World Journal of Gastroenterology 2014年第4期20卷 1123-1126页

作者： Jeik Byun Hyoung-Min Oh soo-Hong Kim Hyun-young Kim Sung-Eun Jung Kwi-Won par. Woo-Sun Kim Depar.ment of Pediatric Surgery Seoul National University Children’s Hospital Depar.ment of Radiology Seoul National University Hospital

Duodenal duplication cysts are rare congenital *** duplication should be considered in the differential diagnosis of patients who present with abdominal symptoms with cystic structures neighboring the ***,we present an 8-year-old girl with a duodenal duplication cyst treated with par.ial cystectomy with mucosal stripping performed *** surgery can be considered as a treatment option for duodenal duplication cysts,especially in extraluminal locations.

关键词： Duodenal duplication cyst Lapar.scopic surgery par.ial cystectomy Extraluminal situation Children

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From core-shell to yolk-shell:Keeping the intimately contacted interface for plasmonic metal@semiconductor nanorods toward enhanced near-infrared photoelectrochemical performance

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Nano Research 2020年第4期13卷 1162-1170页

作者： Xiaodong Wan Jia Liu Dong Wang Yuemei Li Hongzhi Wang Rongrong Pan Erhuan Zhang Xiuming Zhang Xinyuan Li Jiatao Zhang Beijing Key Laboratory of Construction-Tailorable Advanced Functional Materials and Green Applications Experimental Center of Advanced MaterialsSchool of Materials Science&EngineeringBeijing Institute of TechnologyBeijing 100081China

Here we report a synthetic strategy for controllable construction of yolk-shell and core-shell plasmonic metal@semiconductor hybrid nanocrystals through modulating the kinetics of sulfurization reaction followed by cation *** yielded yolk-shell structured products feature exceptional crystallinity and more importantly,the intimately adjoined and sharp interface between plasmonic metal and semiconductor which facilitates efficient charge carrier communications between *** exploiting the system composed of Au nanorods and p-type PbS as a demonstration,we show that the Au@PbS yolk-shell nanorods manifest notable improvement in visible and near infrared light absorption compar.d to the Au@PbS core-shell nanorods as well as hollow PbS ***,the photocathode constituted by Au@PbS yolk-shell nanorods affords the highest photoelectrochemical activities both under simulated sunlight andλ>700 nm light *** superior performance of Au@PbS yolk-shell nanorods is considered arising from the combination of the favorable structural advantages of yolk-shell configuration and the surface plasmon resonance enhancement *** envision that the reported synthetic strategy can offer a valuable means to create hybrid nanocrystals with desirable structures and functions that enable to harness the photogenerated charge carriers,including the plasmonic hot holes,in wide-range solar-to-fuel conversion.

关键词： yolk-shell cation exchange surface plasmon resonance core-shell solar-to-fuel conversion

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Isolated Rupture of Corpus Spongiosum Associated a par.ial Rupture of the Urethra during a False Step of the Coitus: A Case Reported at the University Hospital Sanou souro

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Open Journal of Radiology 2017年第2期7卷 143-149页

作者： Zakari Nikièma Abdoul Karim par. Clotaire A. M. K. D. Yaméogo Adama Ouattara Ida Aida Tankoano Dominique Bicaba Brahima Kirakoya Timothé Kambou Rabiou Cissé Medical Imaging Unit Souro Sanou University Teaching Hospital Bobo-Dioulasso Burkina Faso Urology Unit Sourosanou United University Hospital Bobo-Dioulasso Burkina Faso Urology Unit Yalgado Ouédraogo United University Hospital Ouagadougou Burkina Faso Medical Imaging Unit Yalgado Ouedraogo University Teaching Hospital Ouagadougou Burkina Faso

Penile fracture is a rare urological emergency. It occurs mainly in young adults during sexual intercourse. In many instances, one of the corpora carvanosus is involved though bilateral injuries with or without corpus spongiosus involvement is not uncommon. However, isolated injury to corpus spongiosus is extremely rare. We report a case of isolated rupture of corpus spongiosum secondary to penile injury during coitus in a 43-year-old man that presented to University Hospital souro Sanou of Bobo Dioulasso. He presented with history of persistence bleeding per urethra following penile injury during sexual intercourse. The Retrograde urethrography (RUG) showed a par.ial rupture of urethra, Moore type 3. Complementary penile ultrasound revealed extensive contusion of the urethra with circumferential hematoma and rupture of the distal 1/3 of the corpus spongiosus. He had gentle per urethral catheterization which was left for one month. Penile ultrasound sound done after removal of catheter showed residual injury and narrowing of the urethra.

关键词： Penile Fracture False Steps of Coitus Rupture of Corpus Spongiosum Urethra Injury Ultrasound

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启蒙还是浪漫?——重评胡适在新文化运动中的功与过

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文史哲 2019年第2期 5-14,165页

作者：汪荣祖南开大学历史学院台湾中坜“中央大学”历史讲座 “中央研究院”近代史研究所美国维吉尼亚州立大学

五四新文化运动的思想背景不是理性的启蒙精神,而是一场推动革命与救亡的浪漫主义风潮,因救亡而对传统文化的批判不遗余力,此一强烈的反传统文化批判,并不基于理性,而是出于激情。胡适在新文化运动中主张全盘西化,后来改为充分西化,全... 详细信息

五四新文化运动的思想背景不是理性的启蒙精神,而是一场推动革命与救亡的浪漫主义风潮,因救亡而对传统文化的批判不遗余力,此一强烈的反传统文化批判,并不基于理性,而是出于激情。胡适在新文化运动中主张全盘西化,后来改为充分西化,全面抨击传统,高唱文学革命,宣称文言为"死文字",以白话取代文言,类此议题莫不见到浪漫情调。文艺复兴在欧洲的实质内容是经过中古黑暗时期的学术复苏,是欧洲文化自身的复兴,而胡适所谓"中国文艺复兴",则是现代化(实即西化)进程的结果,从引进西方的物质文明如船舰、器械等,到采用西方政治制度,以及最后精神上的全面西化,而以文学革命为先导。胡适高唱充分西化,其有心于国家的进步与繁荣,固无可疑,然其无心之过,在于只见当前西方的科技文明,对整个西方文化的认识有所不足,昧于自然科学与人文学科的差异。百年后的今天,我们回顾前尘,不宜一味表扬胡适参与五四新文化运动的功绩,也应论其过失,始足以吸取教训,以历史的后见之明鉴往知来。

关键词：胡适新文化运动启蒙精神浪漫主义文学革命

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赫尔辛基中央图书馆

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现代装饰 2013年第4期 90-93页

作者： Jennifer Marmon Matthew young par.筑事务所

设计＼JenniferMarmon（项目主要合伙人）、Matthewyoung（项目建筑师）par.筑事务所参与了赫尔辛基中央图书馆设计竞赛，本案是他们的参赛方案。作为北欧国家芬兰的首都，赫尔辛基城市景观多样，梦幻般的波罗的海、点缀着尖顶建筑的... 详细信息

设计＼JenniferMarmon（项目主要合伙人）、Matthewyoung（项目建筑师）par.筑事务所参与了赫尔辛基中央图书馆设计竞赛，本案是他们的参赛方案。作为北欧国家芬兰的首都，赫尔辛基城市景观多样，梦幻般的波罗的海、点缀着尖顶建筑的广袤天际线、T6515ntahti地区的都市化气息都为设计这样一栋垂直立体感十足的图书馆建筑提供了源源不断的灵感来源。

关键词：图书馆建筑赫尔辛基中央建筑事务所设计竞赛北欧国家城市景观波罗的海

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