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1Microstructure and mechanical properties of Mg-5Li-1Al sheets prepared by accumulative roll bonding显示文摘Ultrafine-grain and high-strength Mg-5Li-1Al sheets were prepared by accumulative roll bonding(ARB)process. Evolution of microstructure and mechanical properties of ARB-processed Mg-5Li-1Al sheets was investigated.Results show that, during ARB process, the evolution of deformation mechanism of t Mg-5Li-1Al alloy is as follows: twinning deformation, shear deformation, forming macro shear zone, and finally dynamic recrystallization(DRX). The grain refining mechanism changes from twin DRX to rotation DRX. With the increase in ARB cycles, strength of the Mg-5Li-1Al sheets is enhanced, whilst elongation varies slightly.With the increase in rolling cycles, anisotropy of mechanical properties decreases. It is conclusive that strain hardening and grain refinement dominate the strengthening mechanism of Mg-5Li-1Al alloy.Legan Hou Tianzi Wang Ruizhi Wu Jinghuai Zhang Milin Zhang Anping Dong Baode Sun Sergey Betsofen Boris Krit 2018Journal of Materials Science & Technology2018,34,2:13
2The transformation of LPSO type in Mg-4Y-2Er-2Zn-0.6Zr and its response to the mechanical properties and damping capacities显示文摘The transformation of LPSO type in Mg-4Y-2Er-2Zn-0.6Zr during heat treatment and its influence on damping and mechanical properties are reported in this work.Prior to heat treatment,the alloy consisted of a-Mg matrix and lamellar 14H LPSO phases.After 510℃heat treatment,lamellae shortened,and their content decreased.Upon 8h heat treatment,block 18R LPSO phases formed at the grain boundaries while 14H LPSO lamellae disappeared.Presence of block 18R LPSO phases improved mechanical and damping properties of the alloy.The corresponding mechanisms of the influence of LPSO type and morphology on mechanical and damping capacities are discussed.Dan Wang Huajie Wu Ruizhi Wu Yang Wang Jinghuai Zhang Sergey Betsofen Boris Krit Legan Hou Turahodjayev Nodir 2020Journal of Magnesium and Alloys2020,8,3:13
3Outcomes of mobile bearing unicompartmental knee arthroplasty in medial osteoarthritis knee with and without preoperative genu recurvatum显示文摘AIM To compare clinical outcomes of patients with and without preoperative genu recurvatum(GR) following mobile bearing unicompartmental knee arthroplasty(UKA). METHODS We prospectively followed 176 patients for at least 24 mo who had been treated by unilateral, minimally invasive, Oxford UKA. Patients with medial osteoarthritis(OA) knee and preoperative GR(Group Ⅰ) accounted for 18%(n = 32) and patients without preoperative GR(Group Ⅱ) accounted for the remaining 82%(n = 144). Knee score, pain scores, and functional scores were assessed for each patient and compared between the two groups. The incidence of postoperative GRand the postoperative hyperextension angles also were recorded and analyzed. RESULTS The pain score, knee score and functional score were not significantly different between the two groups. Similarly, the incidence of postoperative GR and the measured hyperextension angles were not significantly different between the two groups. The incidence of postoperative GR was 1/32(3.12%) in Group Ⅰ and 1/144(0.69%) in Group Ⅱ(P = 0.34). The mean postoperative hyperextension angles were 2.40°± 2.19°(range: 1°-7°) for Group Ⅰ and 1.57°± 3.51°(range: 1°-6°) for Group Ⅱ(P = 0.65).CONCLUSION Medial OA of the knee and concomitant GR is not a contraindication for the mobile bearing UKA.Boonchana Pongcharoen Krit Boontanapibul 2018World Journal of Orthopedics2018,9,9:8
4Influence of Voltage on the Corrosion and Wear Resistance of MicroArc Oxidation Coating on Mg-8Li-2Ca Alloy显示文摘Calcium phosphate(CaP) coatings were prepared on Mg–8Li–2Ca magnesium alloy by micro-arc oxidation(MAO) in an alkaline Na_3PO_4–Ca[C_3H_7O_6P] base solution at the different applied voltages. Scanning electron microscope and X-ray diffraction were employed to characterize the microstructure and phase composition of the coatings, respectively. The corrosion resistance of the coatings was assessed by potential dynamic polarization curves, electrochemical impedance spectroscopy and hydrogen evolution experiment in simulated body fluids solution. The friction and wear properties were evaluated by friction and wear testing machine. The results demonstrate that the coating surface is porous and mainly composed of MgO, Ca_5(PO_4)_3(OH) and CaH_2P_2O_5. With the increase in voltage, the corrosion resistance and wear resistance of the MAO coating are both enhanced. The corrosion current density of the MAO coating decreases about two orders of the magnitude compared to the substrate. Additionally, wear and corrosion mechanisms are discussed.Bing-Yu Qian Wei Miao Min Qiu Fan Gao Dong-Hui Hu Jian-Feng Sun Rui-Zhi Wu Boris Krit Sergey Betsofen 2019Acta Metallurgica Sinica(English Letters)2019,32,2:8
5镁锂合金腐蚀综述显示文摘镁锂合金耐蚀性差是制约其广泛应用的关键问题。本文在总结大量镁锂合金腐蚀行为研究的基础上,阐述镁锂合金腐蚀行为的影响因素和提高其耐蚀性的加工工艺。首先,介绍镁锂合金的腐蚀特点;然后,重点解释晶粒尺寸、晶粒取向、第二相和表面膜对腐蚀行为的影响规律,并通过合金化、塑性变形和热处理工艺改变镁锂合金腐蚀性能。进一步深入讨论镁锂合金的腐蚀机理;最后,提出针对提高镁锂合金耐蚀性应重点关注的方面。马晓春 靳思远 巫瑞智 王甲秀 王桂香 Boris KRIT Sergey BETSOFEN 2021Transactions of Nonferrous Metals Society of China2021,31,11:7
6Ethnic variations in ulcerative colitis: Experience of an international hospital in Thailand显示文摘AIM: To investigate the clinical characteristics, treatment, medication use, and treatment response in patients with ulcerative colitis(UC) across ethnic groups.METHODS: This study retrospectively analyzed medical records of all 268465 patients who visited the Bumrungrad International Digestive Disease Center during 2005-2010. The demographics, clinical characteristics, medication use, results of investigations, and medical and surgical management for patients with UC were evaluated. Evaluation included sigmoidoscopy and colonoscopy performed in compliance with the American Society of Gastrointestinal Endoscopy practice guidelines. Patient ethnicities were categorized into seven groups: Thai, Oriental, South Asian(SA), Middle Eastern(ME), Caucasian, African, and Hispanic. UC pathological severity was classified into inactive, mild, moderate, and severe. Associations between categorical variables were analyzed using the χ2 or Fischer's exact test. Associations between categorical and interval variables were analyzed usingStudent's t-test and/or analysis of covariance.RESULTS: UC was diagnosed in 371 of the 268465 patients: male 56.33%; ME 42%, Caucasian 23%, and Thai 19%. Annual incidence of UC was 82 cases per 100000 with wide ethnic variation, ranging from 29 to 206 cases per 100000 in Oriental and ME patients, respectively. Of the patients with UC, 16.71% had severe UC with highest incidence among the patients from ME(20.39%) and lowest among the Caucasian population(11.90%). ME had highest proportion of pancolitis(52.90%), followed by Caucasian(45.35%) and Asian(34.40%). Only 20.93% of Caucasian patients received steroid, compared with 26.40% and 27.10% of Asian and Middle Eastern, respectively(P = 0.732). Overall, 13.72% of UC patients did not respond to steroid therapy, with non-significantly higher proportions of non-responders among Asian and Middle Eastern patients(15.22% and 15.04%, respectively)(P = 0.781). On average, 5.93% underwent surgical management with ethnic variation, ranging from 0% in African to 18% in SA. Cancer was found in three(Thai, ME, and African) cases(0.82 institution-specific incidence).CONCLUSION: Incidence, symptom duration, pathological severity, clinical manifestations, medication use, treatment response, need for surgical consultation, and cancer incidence of patients with UC potentially vary by ethnicity.Vibhakorn Permpoon Krit Pongpirul Sinn Anuras 2016World Journal of Gastrointestinal Pharmacology and Therapeutics2016,7,3:4
7利用GBSSI和SBD作为“锚”将荧光素酶定位到淀粉粒中效果的比较显示文摘利用马铃薯淀粉粒结合型淀粉合成酶Ⅰ(GBSSI)作为“锚”,在马铃薯淀粉粒形成时将荧光素酶(LUC)定位到淀粉粒中.并对GBSSI/LUC重组蛋白质在转基因淀粉粒中的定位与积累、重组蛋白质中GBSSI与淀粉粒的亲和性以及荧光素酶的活性等进行了分析.结果表明,GBSSI/ LUC重组蛋白质在马铃薯淀粉粒中获得了特异性表达,但与以微生物的淀粉粒结合结构域(SBD) 作为“锚”的SBD/LUC重组蛋白质相比较,它与淀粉粒的亲和性以及荧光素酶的活性均下降.由此认为,在淀粉粒形成过程中,利用SBD作为“锚”将荧光素酶蛋白质定位到淀粉粒中的效果要优于GBSSI.季勤 Jean-Paul Vincken Krit Raemakers Luc C.J.M.Suurs Richard G.F.Visser 2006自然科学进展2006,16,6:4
8Effect of carbonate additive on the microstructure and corrosion resistance of plasma electrolytic oxidation coating on Mg-9Li-3Al alloy显示文摘Carbonate was added to the silicate system electrolyte to improve the corrosion resistance of the plasma electrolytic oxidation coating on Mg-9Li-3Al(wt%,LA93)alloy.The influences of carbonate on the morphology,structure,and phase composition of the coating were investigated by scanning electron microscopy,energy dispersive spectrometry,X-ray diffraction,and X-ray photoelectron spectroscopy.The corrosion resistance of the coating was evaluated by electrochemical experiment,hydrogen evolution,and immersion test.The results showed that the addition of carbonate resulted in a denser coating with increased hardness,and the corrosion-resistant Li_(2)CO_(3) phase was formed.Electrochemical experiments showed that compared with the coating without carbonate,the corrosion potential of the carbonate coating positively shifted(24 mV),and the corrosion current density was reduced by approximately an order of magnitude.The coating with carbonate addition possessed a high corrosion resistance and long-term protection capability.Siyuan Jin Xiaochun Ma Ruizhi Wu Tingqu Li Jiaxiu Wang Boris L Krit Legan Hou Jinghuai Zhang Guixiang Wang 2022International Journal of Minerals,Metallurgy and Materials2022,29,7:3
9SBD在重组蛋白质中位移对其酶活性及与淀粉粒结合性能的影响显示文摘 将环状糊精糖基转移酶的SBD基因编码序列连接到萤光素酶基因的 5′ 端(SBD LUC)后,重组基因通过农杆菌介导导入马铃薯植株中.对重组蛋白在转基因淀粉粒中的定位与积累、重组蛋白中SBD与淀粉的亲和性以及萤光素酶的活性进行了分析比较.结果表明: 重组蛋白在马铃薯淀粉粒中获得了特异性表达, 当C 端SBD移位到重组萤光素酶蛋白的N 端后, SBD和淀粉的亲和性与LUC SBD重组蛋白质比较有所下降, 但萤光素酶活性则与马铃薯遗传背景有关.季勤 Jean-Paul Vincken Krit Raemakers Lucas Carolus Josephus Maria Suurs Richard Gerardus Franciscus Visser 2005南京师大学报(自然科学版)2005,28,1:3
10Potato steroidal glycoalkaloid levels and the expression of key isoprenoid metabolic genes 显示文摘Pinchas Krits Edna Fogelman Idit Ginzberg 2007Planta2007,227,:1
11Boundary Detection in Medical Images Using Edge Following Algorithm Based on Intensity Gradient and Texture Gradient Features显示文摘Krit Somkantha Nipon Theera-Umpon 2011IEEE Transactions on Biomedical Engineering2011,58,3:1
12Characteristics of Atrial Tachycardia due to Small versus Large Reentrant Circuits after Ablation of Persistent Atrial Fibrillation显示文摘Miki Yokokawa Rakesh Latchamsetty Hamid Ghanbari Diego Belardi Akash Makkar Brett Roberts Wouter Saint-Phard Mohamad Sinno Thomas Carrigan Robert Kennedy Arisara Suwanagool Eric Good Thomas Crawford Krit Jongnarangsin Frank Pelosi Frank Bogun Hakan Oral F 2012Heart Rhythm2012,,:1
13A study of microstructure and electrical properties of lead zirconate titanate doped with Pr6O11 显示文摘SUPREYA T KRIT K CHIRAWAT K 2007Journal of Ceramic Processing Research2007,8,3:1
14Transgene Organisation in Potato After Particle Bombardment-mediated (co-)Transformation Using Plasmids and Gene Cassettes显示文摘Andrea Romano Krit Raemakers Jamila Bernardi Richard Visser Hans Mooibroek 2003Transgenic Research2003,,4:1
15Cirrho- sis is not a contraindication to laparoscopic cholecystec- tomy: Results and practical recommendations显示文摘Kevin Tri Nguyen Krit Kitisin Jennifer Steel 2011HPB: The Official Journal of the International Hepato Pancreato Biliary Association2011,13,3:1
16Transgene Organisation in Potato After Particle Bombardment-mediated (co-)Transformation Using Plasmids and Gene Cassettes显示文摘Andrea Romano Krit Raemakers Jamila Bernardi Richard Visser Hans Mooibroek 2003Transgenic Research2003,,4:1
17Tumor-Infiltrating Lymphocyte Therapy for Melanoma: Rationale and Issues for Further Clinical Development显示文摘Geok Choo Sim Jessica Chacon Cara Haymaker Krit Ritthipichai Manish Singh Patrick Hwu Laszlo Radvanyi 2014BioDrugs2014,,:1
18Bioactive proteins and peptides from food sources applications of bioprocesses used in isolation and recovery显示文摘KrITS D D WEILER K 2003Current Pharmaceutical Design2003,9,16:1
19Postoperative Atrial Fibrillation显示文摘Krit J Hakan O 2009Cardial Clin2009,27,:1
20Effect of age, vitamin D, and calcium on the regulation of rat intestinal epithelial calcium channels显示文摘Alex J. Brown Irina Krits H. James Armbrecht 2005Archives of Biochemistry and Biophysics2005,,1:1
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