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The effects of single versus combined therapy using LIM-kinase 2 inhibitor and type 5 phosphodiesterase inhibitor on erectile function in a rat model of cavernous nerve injury-induced erectile dysfunction

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Asian Journal of Andrology 2019年第5期21卷 493-500页

作者： Min Chui Cho Junghoon Lee Juhyun Park Sohee Oh Ji Sun Chai Hwancheol Son Jae-Seung Paick Soo woong kim Department of Urology Seoul National University College of MedicineSMG-SNU Boramae Medical CenterSeoul 07061Korea Department of Urology Seoul National University College of MedicineSeoul National University HospitalSeoul 03080Korea Department of Biostatistics Seoul National University College of MedicineSMG-SNU Boramae Medical CenterSeoul 07061Korea

We aimed to determine whether combination of LIM-kinase 2 inhibitor(LIMK2i)and phosphodiesterase type-5 inhibitor(PDE5i)could restore erectile function through suppressing cavernous fibrosis and improving caver nous apoptosis in a rat model of cavernous nerve crush injury(CNCI).Seventy 12-week-old Sprague-Dawley rats were equally distributed into five groups as follows:(1)sham surgery(Group S),(2)CNCI(Group I),(3)CNCI treated with daily intraperitoneal administration of 10.0 mg kg^-1 LIMK2i(Group I+L),(4)daily oral administration of 20.0 mg kg-1 udenafil,PDE5i(Group I+U),and(5)combined administration of 10.0 mg kg^-1 LIMK2i and 20.0 mg kg^-1 udenafil(Group I+L+U).Rats in Groups I+L,I+U,and I+L+U were treated with respective regimens for 2 weeks after *** 2 weeks after surgery,erectile response was assessed using *** tissues were processed for histological studies and western *** I showed lower intracavernous pressure(ICP)/mean arterial pressure(MAP),lower area under the curve(AUC)/MAP,decreased immunohistochemical staining for alpha-smooth muscle(SM)actin,higher apoptotic index,lower SM/collagen ratio,increased phospho-LIMK2-positive fibroblasts,decreased protein kinase B/endothelial nitric oxide synthase(Akt/eNOS)phosphorylation,increased LIMK2/cofilin phosphorylation,and increased protein expression of fibronectin,compared to Group *** all three treatment groups,erectile responses,protein expression of fibronectin,and SM/collagen ratio were *** I+L+U showed greater improvement in erectile response than Group I+*** content and apoptotic index in Groups I+U and I+L+U were improved compared to those in Group ***,Group I+L did not show a significant improvement in SM content or apoptotic *** number of phospho-LIMK2-positive fibroblasts was normalized in Groups I+L and I+L+U,but not in Group I+***/eNOS phosphorylation was improved in Groups I+U and I+L+U,but not in Group I+***2/cofilin phosphorylation was i

关键词： apoptosis erectile dysfunction fibrosis LIM kinase phosphodiesterase

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Evaluation of recurrence in gastric carcinoma: Comparison of contrast-enhanced computed tomography and positron emission tomography/computed tomography

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World Journal of Gastroenterology 2017年第35期23卷 6448-6456页

作者： Jong Hyeon kim Suk Hee Heo Jin woong kim Sang Soo Shin Jung Jun Min Seong Young Kwon Yong Yeon Jeong Heoung Keun Kang Department of Radiology Chonnam National University Medical SchoolChonnam National University Hwasun Hospital Department of Radiology Chonnam National University Medical SchoolChonnam National University Hospital Department of Nuclear Medicine Chonnam National University Medical SchoolChonnam National University Hwasun Hostpital

AIM To compare the value of contrast-enhanced abdominal computed tomography(CT) and fluorodeoxyglucose(FDG) positron emission tomography/computed tomography(PET/CT) for detecting gastric carcinoma *** We retrospectively examined data from 2475 patients who underwent both contrast-enhanced abdominal CT and FDG PET/CT for the surveillance of gastric carcinoma curative resection. Patients had an interval of less than 1 mo between their CT and PET/CT scans. Sixty patients who had recurrence were enrolled. Among 1896 patients who did not have recurrence, 60 were selected by simple random sampling. All CT and PET/CT images were reviewed retrospectively by two reviewers blinded to all clinical and pathologic information except curative resection due to gastric carcinoma. RESULTS The pathological stage of the recurrence group was statistically significantly higher than that of the control group(P < 0.001). In the 60 patients who had recurrence, there were 79 recurrent lesions. Fortyfour patients had only one location of recurrence, 13 patients had two locations, and 3 patients had three. In the detection of patient-based overall recurrence, no statistically significant differences existed between the two modalities(P = 0.096). However, for peritoneal carcinomatosis, CT had a statistically significantly higher sensitivity compared to PET/CT(96% vs 50%, P = 0.001). Adenocarcinoma was the most common type of gastric carcinoma. On the pathology-based analysis, CT also had a statistically significantly higher sensitivity compared to PET/CT(98% vs 80%, P = 0.035).CONCLUSION Contrast-enhanced CT was superior to PET/CT in the detection of peritoneal carcinomatosis and pathologic type of adenocarcinoma.

关键词： Gastric carcinoma Surgery Contrastenhanced abdominal computed tomography Fluorodeoxyglucose positron emission tomograph/computed tomography Surveillance Recurrence

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Role of inhibiting LIM-kinase2 in improving erectile function through suppression of corporal fibrosis in a rat model of cavernous nerve injury

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Asian Journal of Andrology 2018年第4期20卷 372-378页

作者： Juhyun Park Sung Yong Cho Kwanjin Park Ji Sun Chai Hwancheol Son Soo woong kim Jae-Seung Paick Min Chul Cho Department of Urology Seoul National University College of Medicine SMG-SNU Boramae Medical Center Seoul 03080 Korea Department of Urology Seoul Nationa University College of Medicine Seoul National University Hospital Seoul 07061 Korea

We evaluated whether LIM-kinase 2 inhibitor （LIMK2i） could improve erectile function by suppressing corporal fibrosis through the normalization of the Rho-associated coiled-coil protein kinase 1 （ROCK1）/LIMK2/Cofilin pathway in a rat model of cavernous nerve crush injury （CNCl）. Sixty 11-week-old male Sprague-Dawley rats were divided equally into five groups： sham surgery （S）, CNCl （I）, and CNCl treated with low-dose （L）, medium-dose （M）, and high-dose （H） LIMK2i. The L, M, and H groups were treated with a daily intraperitoneal injection of LIMK2i （2.5, 5.0, and 10.0 mg kg-1 body weight, respectively） for 1 week after surgery. The erectile response was assessed using electrostimulation at 1 week, postoperatively. Penile tissues were processed for Masson＇s trichrome staining, double immunofluorescence, and Western blot assay. Erectile responses in the H group improved compared with the I group, while the M group showed only partial improvement. A significantly decreased smooth muscle/collagen ratio and an increased content of fibroblasts positive for phospho-/IMK2 were noted in the I group. The M and H groups revealed significant improvements in histological alterations and the dysregulated LIMK2/Cofilin pathway, except for LIMK2 phosphorylation in the M group. The inhibition of LIMK2 did not affect the ROCK1 protein expression. The content of fibroblasts positive for phospho-LIMK2 in the H group returned to the level found in the S group, whereas it did not in the M group. However, the L group did not exhibit such improvements. Our data suggest that the inhibition of LIMK2, particularly with administration of 10.0 mg kg^-1 body weight LIMK2i, can improve corporal fibrosis and erectile function by normalizing the LIMK2/Cofilin pathway.

关键词： erectile dysfunction fibrosis LIM kinase penis prostatectomy

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Studies on self-esteem of penile size in young Koreanmilitary men

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Asian Journal of Andrology 2003年第3期5卷 185-189页

作者： Hwancheol Son Hanjoo Lee Jung-Sik Huh Soo woong kim Jae-Seung Paick Department of Urology Seoul Municipal Boramae Hospital Seoul Korea Department of Neuropsychiatry Seoul National University College of Medicine Seoul Korea Department of Urology Cheju National University College of Medicine Jeju Korea Department of Urology Seoul National University College of Medicine Seoul 110744 Korea

Aim: To investigate the flaccid and stretched penile sizes of young Korean men and their complexes or pride about their penile size. Methods: After an explanation and agreement to the purpose and methods of this study, 123 Korean men in their early 20's visiting the Jinhae Military General Hospital were included in the study. The flaccid penile length, flaccid mid-shaft circumference, stretched length and pre-pubic bone fat pad depth were measured in a warm comfortable environment. The accuracy the subjects assessed their penile size was investigated by asking them to rate their penile size, as 'very small', 'small', 'normal', 'large' or 'very large'. All subjects were asked to complete the Minnesota multiphasic personality inventory (MMPI) test. Results: The mean flaccid length, flaccid circumference, stretched length and fat pad depth of the 123 subjects were (6.9 ± 0.8) cm, (8.5 ±1.1) cm, (9.6 ± 0.8) cm and (1.1 ± 0.4) cm, respectively. The answer distribution on penile size was 1 (0.8 %) 'very small', 29 (23.6 %) 'small', 86 (69.9 %) 'normal', 6 (4.9 %) 'large' and 1 (0.8 %) 'very large'. Subjects who underestimated their penile size showed significantly higher scores on the hypochondriasis (Hs), depression (D) and psychasthenia (Pt) subscales of the MMPI than those in the Unbiased Group (P<0.05). Conclusion: In consultation, with a patient requesting penile augmentation, the urologist should consider the psychologic attitude of the patient to his penile size.

关键词： penile size penile length self esteem MMPI psychology

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Efficacy and safety of oral SK3530 for the treatment of erectile dysfunction in Korean men： a multicenter, randomized, doubleblind, placebo-controlled, fixed dose, parallel group clinical trial

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Asian Journal of Andrology 2008年第5期10卷 791-798页

作者： Jae-Seung Paick Hyung-Ki Choi Sae-Chul kim Tai-Young Ahn Je-Jong kim Jong-Kwan Park Kwang-Sung Park Sung-Won Lee Sae-woong kim Kwanjin Park Hyonggi Jung Nam-Cheol Park Department of Urology Seoltl National University Hospital Seoul 110-744 Korea Department of Urology Yonsei University Yongdong Severance Hospital Seoul 135-720 Korea Department of Urology Chung-ang University Yongsan Hospital Seoul 140-757 Korea Department of Urology University of Ulsan Asan Medical Center Seoul 138-736 Korea Department of Urology Korea University Anam Hospital Seoul 136-705 Korea Department of Urology Chonbuk National University Hospital Jeonju 561-712 Korea Department of Urology Chonnam National University Hospital Gwangju 501-757 Korea Department of Urology Sungkyunkwan University Samsung Medical Center Seoul 135-710 Korea Department of Urology Catholic University St. Mary＇s Hospital Seoul 150-713 Korea Department of Urology Korea Cancer Center Hospital Seoul 139-706 Korea Department of Biostatistics Seokyeong University Seoul 136- 704 Korea Department of Urology Pusan National University Hospital Busan 602-739 Korea

Aim： To evaluate the efficacy and safety of SK3530, a newly developed type 5 phosphodiesterase inhibitor （PDE5I）, in Korean men with erectile dysfunction （ED）. Methods： A total of 119 patients were randomized at 10 centers in Korea to receive either SK3530 （50, 100, or 150 mg; n = 89） or placebo （n = 30） taken 1 h before anticipated sexual activity for an 8-week period. The patients were evaluated at baseline and 4 and 8 weeks after beginning therapy. Efficacy was assessed using the International Index of Erectile Function （IIEF）, Sexual Encounter Profile （SEP）, and the Global Assessment Question （GAQ）. Safety was analyzed by adverse events, laboratory values and vital signs. Results： At the end of the study, all the primary and secondary efficacy end-points were statistically significantly improved by SK3530 compared with placebo （P 〈 0.05）. Of the 89 patients in the treatment arm, 36 （42.3 %） achieved normal erectile function after treatment, including six patients with severe ED. Treatment-related adverse events occurred in 32 patients. The most common adverse events were flushing, headache, dizziness and eye redness （10.9%, 7.6%, 2.5% and 2.5%, respectively）, and most were mild. Only two patients discontinued treatment during the study period because of adverse events. Conclusion： The results of our phase Ⅱ study have confirmed the efficacy and safety of SK3530 in a broad population of men with ED of various etiologies and severity. The optimal doses in terms of efficacy and safety were determined to be 50 mg and 100 mg, respectively.

关键词： erectile dysfunction phosphodiesterase sildenafil citrate

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Coronary Artery Complications after Right Ventricular Outflow Tract Reconstruction Surgery

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Congenital Heart Disease 2022年第3期17卷 281-295页

作者： Hye Won Kwon Mi Kyoung Song Sang Yun Lee Gi Beom kim Sungkyu Cho Jae Gun Kwak woong-Han kim Whal Lee Eun Jung Bae Department of Pediatrics Seoul National University HospitalSeoul National University College of MedicineSeoulSouth Korea Department of Thoracic and Cardiovascular Surgery Seoul National University HospitalSeoul National University College of MedicineSeoulSouth Korea Department of Radiology Seoul National University HospitalSeoulSouth Korea

Background:Mechanisms and clinical manifestations of coronary artery complications after right ventricular outflow tract reconstruction surgery are not well ***:Patients who had coronary artery complications after pulmonary valve replacement or the Rastelli procedure at a single tertiary centre were retrospectively ***:Coronary artery complications were identified in 20 patients who underwent right ventricular outflow tract reconstruction *** median age at diagnosis of coronary artery complication was 21 years(interquartile range:13–25 years).Mechanisms of coronary artery complications were compression by adjacent materials in 12 patients,dynamic compression of intramural course of coronary artery in two patients,and intraoperative injury in six *** coronary artery anomalies were identified in 50%(10/20)of *** patients presented with early postoperative haemodynamic *** patients showed late onset symptoms or signs of coronary insufficiency,including chest pain,ventricular dysfunction,or ventricular *** artery stenosis was incidentally found on cardiac computed tomography angiography in two asymptomatic *** patients underwent surgical interventions,and one patient underwent percutaneous coronary intervention for coronary *** patient with recurrent ventricular tachycardia required an implantable *** were two deaths in patients with intraoperative coronary ***:Preoperative coronary evaluation and long-term follow-up for the development of coronary artery complications are required in patients undergoing right ventricular outflow tract reconstruction surgery to prevent ventricular dysfunction,arrhythmias,and death,especially among those with congenital coronary anomalies.

关键词： Congenital heart disease right ventricular outflow tract reconstruction surgery coronary artery disease

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Effect of tamsulosin on ejaculatory function in BPH/LUTS

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Asian Journal of Andrology 2011年第6期13卷 846-850页

作者： Sang Hoon Song Hwancheol Son Kwang Taek kim Sae woong kim Du Geon Moon Ki Hak Moon Kwangsung Park Jong Kwan Park Sung-Won Lee Jae Seog Hyun Nam Cheol Park Jeungpyung Health Center Jeungpyung-gun Chungbuk 368-900 Korea Department of Urology Seoul Metropolitan Boramae Hospital Seoul 156-707 Korea Aerospace Medical Center Cheongwon Chungbuk 363-840 Korea Catholic University of Korea College of Medicine Seoul 137-701 Korea Korea University College of Medicine Seoul 152-703 Korea Department of Urology Yeungnam University College of Medicine Daegu 705-717 Korea Department of Urology Chonnam National University Medical School Gwangju 501-757 Korea Department of Urology Medical School and Institute for Medical Sciences Chonbuk National University Chonbuk 561-712 Korea Research Institute of Clinical Medicine and CTC for Medical Device of Chonbuk National University Hospital Chonbuk 561-712 Korea Samsung Medical Center Sungkyunkwan University School of Medicine Seoul 135-710 Korea Gyeongsang National University Gyeongnam 660-702 Korea pusan National University College of Medicine Pusan 602-739 Korea

This study was undertaken to determine the impact on ejaculatory function of tamsulosin （0.2 mg） given once daily （OD） for 12 weeks and to identify risk factors for ejaculatory dysfunction in patients undergoing this treatment. Males with an International Prostatic Symptom Score （IPSS） ≥ 8 were enrolled in this study. All participants completed questionnaires, including the IPSS and the Male Sexual Health Questionnaire （MSHQ）, and serum prostate-specific antigen, transrectal ultrasound and uroflowmetry with post-void residual were measured. After initiating 0.2 mg OD tamsulosin, patients were re-evaluated on the fourth and twelfth weeks of medication. The chi-squared test, the independent t-test and one-way ANOVA were used to compare means. Binary logistic regression analysis was used to calculate the odds ratio for all risk factors. A total of 177 men constituted the study cohort. No significant difference was observed between baseline and follow-up for the erectile function, ejaculatory function, satisfaction, sexual activity and desire domains （EFD, EjFD, SDA and ADD） or for erectile or ejaculatory bother mean scores. After 12 weeks, the overall incidence of ejaculatory dysfunction （EjD） was 13.4%. Incidences of the seven different types of EjD （decreased frequency, delay, dryness, decreased strength/force, decreased volume, decreased pleasure and pain at ejaculation） were 2.4%, 3.1%, 3.9%, 3.9%, 6.3%, 7.1% and 3.1%, respectively. Baseline EjFD scores were higher for I PSS responders than for non-responders （26.09 vs. 24.06, P=0.03）. An EjFD score reduction was more frequent in IPSS responders. The incidence of EjD was small, but not negligible and was more frequent in patients with less lower urinary tract symptoms, a smaller prostate, higher baseline MSHQ totals and higher EjFD scores.

关键词： alpha-1 adrenergic receptors benign prostatic hyperplasia ejaculation lower urinary tract symptom Male Sexual HealthQuestionnaire prostatic hyperplasia tamsulosin

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Long-Term Outcome and Risk Factor Analysis of Surgical Pulmonary Valve Replacement in Congenital Heart Disease

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Congenital Heart Disease 2022年第3期17卷 335-350页

作者： Woo Young Park Gi Beom kim Sang Yun Lee Mi Kyoung Song Hye Won Kwon Hyo Soon An Eun Jung Bae Sungkyu Cho Jae Gun Kwak woong-Han kim Department of Pediatrics Seoul National University Children’s HospitalSeoul National University College of MedicineSeoulKorea Department of Thoracic and Cardiovascular Surgery Seoul National University Children’s HospitalSeoul National University College of MedicineSeoulKorea

Objectives:To establish long-term outcome of surgical pulmonary valve replacement(PVR)in congenital heart disease(CHD)and to identify risk factors for overall mortality,operative mortality,and repetitive ***:This is a retrospective study of 375 surgical PVR in 293 patients who underwent surgical PVR for CHD between January 2000 and May *** only included patients with index PVR with previous open-heart surgery regardless of the number of *** previous surgical history of patients who underwent PVR during the study period was also *** who underwent the Rastelli operation,and those who underwent single PVR without previous open-heart surgery were ***:The median age of the patients at the time of surgical PVR was 14.9 years(Interquartile range,IQR,11.0–22.0).The median follow-up duration was 10.5 years(IQR,5.5–14.8 years).There were 3 patients with operative mortality(1.0%)and 15 patients with overall mortality(5.1%).The survival rate was 95.1%over 20 years follow-up *** analysis demonstrated that more than 3 times of previous open-heart surgeries before surgical PVR,older age at the first operation,longer cardiopulmonary bypass(CPB)time and longer intensive care unit(ICU)stay were predictors for overall *** who underwent surgical PVR after more than 3 times of previous open-heart surgeries had significantly higher mortality than those who underwent open-heart surgeries less than 3 times(P<0.001).Age younger than 10 years,male,multiple valve problems and longer ICU stay were significant predictors for repetitive PVR by multivariate ***:Though surgical PVR has excellent long-term outcome,it should be performed with caution for those who previously underwent multiple open-heart surgeries,especially if patient received more than 3 times of open-heart surgeries.

关键词： Pulmonary valve replacement mortality operative mortality repetitive pulmonary valve replacement risk factor analysis childhood

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Cytoprotective effects of Morinda offucinalis against hydrogen peroxide-induced oxidative stress in Leydig TM3 cells

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Asian Journal of Andrology 2008年第4期10卷 667-674页

作者： Mun-Seog Chang Won-Nam kim woong-Mo Yang Hyu-Young kim Ji-Hoon Oh Seong-Kyu Park Department of Prescriptionology College of Oriental Medicine Kyung Hee University Seoul 130-701 Korea

Aim： To investigate the antioxidant effects of Morinda officinalis （Morindae radix, MR） on H2O2-induced oxidative stress in cultured mouse TM3 Leydig cells. Methods： We carried out 2,2-diphenyl-1-picrylhydrazyl free radical scavenging, 3-（4,5-dimethylthiazol-2-yl）-2,5-diphenyltetrazolium bromide, lipid peroxidation, testosterone enzyme immunoassay, superoxide dismutase （SOD）, and catalase （CAT） assays in Leydig TM3 cells. Results： MR showed a 47.8% 2,2-diphenyl-1-picrylhydrazyl radical scavenging effect in TM3 cells with no significant cytotoxicity. Oxidative stress was induced in TM3 cells with 100 μmol H2O2, and treatment of the cells with 250 μg/mL MR showed the most significant protective effect （64%, P 〈 0.001） in the cell viability assay with a decreased lipid peroxidation level （1.75 nmol/mg protein, P 〈 0.05）, increased testosterone production （43.5 pg/mL）, and improvements in SOD activity （7.49 units of SOD/mg protein, P 〈 0.001） and CAT activity （74.6 units of CAT/mg protein, P 〈 0.001）. Conclusion： These findings indicate that MR, as an antioxidant, protects functions of cultured mouse TM3 Leydig cells from H2O2-induced oxidative stress.

关键词： Morindae radix Leydig cell testosterone hydrogen peroxide antioxidant

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Oxygen vacancy engineering for tuning the catalytic activity of LaCoO_(3) perovskite

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Journal of Rare Earths 2024年第3期42卷 506-514,I0003页

作者： Jeong Hyun Cho Minjae kim Inchan Yang Kyung Tae Park Chang Houn Rhee Hai woong Park Ji Chul Jung Department of Chemical Engineering Myongji UniversityYongin 17058Republic of Korea Institute of Advanced Composite Materials Korea Institute of Science and TechnologyWanju-gunJeollabuk-do 55324Republic of Korea Iron&Steel Process Engineering Research Group POSCOPohang 37859Republic of Korea Hydrogen Research Center Research Institute of Industrial Science&Technology(RIST)Pohang 37673Republic of Korea

Herein, we attempted to engineer oxygen vacancies on the surface of LaCoO_(3) perovskite through simple post-treatments(acid or reductive thermal treatments). Acid treatment induces oxygen vacancies through the selective etching of the La cations, whereas thermal treatment in a reducing atmosphere generates oxygen vacancies by directly removing lattice oxygen. The characterization results confirm that the number of surface oxygen vacancies, which are crucial in various catalytic oxidation reactions,considerably increases in the LaCoO_(3) catalysts treated with acid or reducing gas. Acid treatment enriches the oxygen vacancies while maintaining the structure of the LaCoO_(3) catalysts, which can not be achieved through reductive thermal treatment. Therefore, the acid treatment is considered a promising technique for oxygen vacancy engineering of perovskite catalysts for tuning their catalytic activities. Furthermore,the catalytic activities of the posttreated LaCoO_(3) catalysts for CO oxidation were evaluated and are noted to be considerably better than those of the pristine LaCoO_(3) catalyst due to their abundant oxygen vacancies. Consequently, we conclude that the oxygen vacancies of perovskite catalysts can be effectively engineered via two simple methods and play a significant role in CO oxidation.

关键词： LaCoO_(3)perovskite Acid treatment Reductive thermal treatment Oxygen vacancy CO oxidation Rare earths

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