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Green synthesis of three-dimensional magnesium ferrite/titanium dioxide/reduced graphene from Garcinia mangostana extract for crystal violet photodegradation and antibacterial activity

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Journal of Semiconductors 2023年第12期44卷 111-124页

作者： Tong Hoang Lin Che Quang Cong Nguyen Thanh Hoai Nam Hoang An Nguyen Duy Hai Ton That Buu Thoi Le Nhat Binh Hoang Le Minh Lam Thanh Ngan Hoang Thuy Kim Ngan Du Chi vi ta Dang Khoa Nguyen Huu Hieu VNU-HCM Key Laboratory of Chemical Engineering and Petroleum Processing(Key CEPP Lab)Ho Chi Minh City University of Technology(HCMUT)268 Ly Thuong Kiet StreetDistrict 10Ho Chi Minh CityVietnam Faculty of Chemical Engineering Ho Chi Minh City University of Technology(HCMUT)268 Ly Thuong Kiet StreetDistrict 10Ho Chi Minh CityVietnam vietnam National University Ho Chi Minh City(VNU-HCM) Linh Trung WardThu Duc CityVietnam

In this study,three-dimensional porous magnesium ferrite/titanium dioxide/reduced graphene oxide(Mg Fe_2O_(4)-GM/TiO_(2)/rGO(MGTG))was successfully synthesized via green and hydrothermal-supported co-precipitation methods using the extract of Garcinia mangostana(***)as a reducing *** characterization results indicate the successful formation of the nano/micro Mg Fe_(2)O_(4)(MFO)and TiO_(2) on the structure of the reduced graphene oxide(rGO),which can also act as efficient support,alleviating the agglomeration of the nano/micro MFO and TiO_(2).The synergic effects of the adsorption and photodegradation activity of the material were investigated according to the removal of crystal violet(CV)under ultraviolet *** effects of catalyst dosage,CV concentration,and p H on the CV removal efficiency of the MGTG were also *** to the results,the CV photodegradation of the MGTG-200 corresponded to the pseudo-first-order kinetic *** reusability of the material after 10 cycles also showed a removal efficiency of 92%.This happened because the materials can easily be recollected using external *** addition,according to the effects of different free radicals·O_(2)^(-),h^(+),and·OH on the photodegradation process,the photocatalysis mechanism of the MGTG was also thoroughly *** antibacterial efficiency of the MGTG was also evaluated according to the inhibition of the Gram-positive bacteria strain Staphylococcus aureus(***).Concurrently,the antibacterial mechanism of the fabricated material was also *** results confirm that the prepared material can be potentially employed in a wide range of applications,including wastewater treatment and antibacterial activity.

关键词： magnesium ferrite titanium dioxide reduced graphene oxide Garcinia mangostana photodegradation antibacterial

Uterine Leiomyomas Surgery: Assessment of Five Years in the Gynecology Department of Hôpital du Mali

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Open Journal of Obstetrics and Gynecology 2021年第9期11卷 1161-1171页

作者： Mamadou Bakary Coulibaly Alassane Traoré Mody Abdoulaye Camara Adama Sangaré Issa Ongoiba Mamadou Keïta Kalba Tembine Amadou Sidibé Ibrahim Teguete Youssouf Traore Service of Gynecology of Hô pital du Mali Bamako Mali Service of Medical Imaging of Hô pital du Mali Bamako Mali Gynecology-Obstetrics Unit of Referral Health Center of Commune vi Bamako Mali Service of Anesthesia and Resuscitation of Hô pital du Mali Bamako Mali Service of Gynecology-Obstetrics Chu Gabriel Toure Bamako Mali

Uterine leiomyomas (myomas) are the most common benign tumors of the female genital tract. They affect 20% to 25% of women of childbearing age and are 3 to 9 times more common in black women. We initiated this study in order to report the socio-demographic aspects and the indications for leiomyomas surgery at Hôpital du Mali. This was a retro-prospective descriptive study, conducted in the gynecology department of Hôpital du Mali from January 1, 2015 to December 31, 2019. Any patients, regardless of their age, in whom a leiomyomas had been detected and surgically treated were included. We had collected 180 cases of surgery for leiomyomas out of 950 surgical procedures, with a frequency of 18.94%. The 36 - 45 age group represented 45% of our patients w

关键词： Uterine Leiomyomas Surgery Hôpital du Mali

Giant Aneurysmal Bone Cyst of the Right Femur about a Case

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Open Journal of Radiology 2023年第3期13卷 139-145页

作者： Cheick Oumar Keïta Aboudramane Konaté Yacouba Drissa Traoré Youssouf Koné Abdoulaye Koné Issa Diarra Ilias Guindo Salia Coulibaly Mahamadou Diallo Siaka Sidibé Radiology Department Mohammed VI Perinatal Clinic Bamako Mali Radiology Department County Hospital of Sikasso Sikasso Mali Radiology Department CNAM Bamako Mali Radiology Department Jacques Boutard Hospital Center Saint Yrieix La Perche France Medical Imaging Department University Hospital of Point G Bamako Mali Medical Imaging Department University Hospital of Kati Kati Mali Medical Imaging Department Gabriel Touré University Hospital Bamako Mali

Aneurysmal bone cyst (ABC) is a rare bone tumor accounting for 1% - 4% of benign bone tumors. Its etiopathogenesis remains unknown. The main site is the metaphysis of the long bones. ABC occurs almost exclusively in young people, with a slight female predominance. We report an exceptional case of ABC of the femur with involvement of the right hip in a 16-year-old girl in the Medical Imaging Department of Pr Bocar Sidy Sall Hospital of Kati (Mali). We will discuss the clinical and radiological aspects of this pathology. Observation: Mrs N C., aged 16, was referred to the orthopaedic-traumatology department for an X-ray of the right thigh, indicated as having a large, disabling thigh. Clinical examination revealed a large thigh measuring 890 mm in circumference, compared with 300 mm on the contralateral side. Radiographically, the femur showed a blown appearance, with the cortex thinned and broken in places. Exceptionally, the lesion affected the entire femur. On CT scan, we found a voluminous fluid collection occupying the entire right femur, including the right femoral head and homolateral ischium. The cortex was interrupted in places, and the adjacent soft tissues were thinned or laminated, but not infiltrated. Histology revealed haemorrhagic and inflammatory elements compatible with the diagnosis of ABC. Conclusion: ABC is a tumor entity that is often difficult to diagnose. Medical imaging, topographical distribution and histology form an indissociable whole to establish a diagnosis of certainty.

关键词： Aneurysmal Bone Cyst Medical Imaging Femur

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基于双DSP及vi技术的无线测控系统设计

现代电子技术 2010年第9期33卷 132-135,140页

作者：拓宏伟延安卷烟厂陕西延安716000

针对工业测控的现状和需求,提出一种新型测控方案,并对其关键技术进行了研究。系统采用双DSP工作模式,并在此基础上提出了并行FFT算法,实现了双余度数据采集及处理,提高了数据处理效率;采用RS 485无线通信方式实现数据和控制信号收发;... 详细信息

针对工业测控的现状和需求,提出一种新型测控方案,并对其关键技术进行了研究。系统采用双DSP工作模式,并在此基础上提出了并行FFT算法,实现了双余度数据采集及处理,提高了数据处理效率;采用RS 485无线通信方式实现数据和控制信号收发;上位机端基于LabviEW开发平台实现了信号收发,并提供ODBC数据库接口,将虚拟仪器技术和面向Internet的Web技术有机结合起来,很好地满足了监测系统互联和资源共享的需求。

关键词： DSP 虚拟仪器并行FFT算法无线通信

Clinical and Therapeutic Aspects of Genital Prolapse at Hôpital du Mali about 100 Cases

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Open Journal of Obstetrics and Gynecology 2023年第1期13卷 121-132页

作者： Mamadou Bakary Coulibaly Mody Abdoulaye Camara Alassane Traoré Mamadou Keïta Bourama Kané Abdramane Togo Issa Ongoiba Kalba Tembiné Amadou Sidibé Baba Fané Ibrahima Tégueté Youssouf Traoré Gynecology Department of Hô pital du Mali Bamako Mali Medical Imaging Department of Hô pital du Mali Bamako Mali Referral Health Center of Commune vi of the District of Bamako Bamako Mali Pediatrics Department of Hô pital du Mali Bamako Mali Anesthesia and Intensive Care Unit Hô pital du Mali Bamako Mali Biomedical Department of Hô pital du Mali Bamako Mali Department of Gynecology Obstetrics UTH Gabriel Touré Bamako Mali

To study the epidemio-clinical aspects, and the therapeutic attitudes of genital prolapse (GP) in the gynecology department of Hôpital du Mali (HDM). This is a descriptive retro-prospective study over five (5) years from January 2015 to December 2019, conducted in the gynecology department of HDM. We had collected 100 cases of GP out of 989 surgeries, with a frequency of 9.89%. The age group of 60 years and over accounted for 33% of our patients, with a mean age of 50 years. Multiparous were the most affected (89%). The notion of obstructed labor was observed in 52% of patients. The most found reason for consultation was the feeling of lump in a vagina, with 65%. Grade III according to BADEN-WALKER classification system (BWCS) concerned 72% of our patients. Triple perineal surgery and hysterectomy involved 56% of our patients. Spinal anesthesia was performed in 96% of cases. Per and postoperative complications were dominated by urinary retention in 4% and by infection of the surgical site in 2%. The average hospital stay was 3.2 days. We recorded 88% of satisfied patients after the intervention. No deaths were recorded during the study. The management of genital prolapse remains essentially surgical;it requires a semiological analysis and a mastery of the surgical technique.

关键词： Genital Prolapse Therapeutic Attitudes Hôpital du Mali

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基于相位迁移的超声平面波多层皮质骨成像

物理学报 2023年第15期72卷 127-136页

作者：张芸芸李义方石勤振许乐修戴菲邢文宇他得安复旦大学信息科学与工程学院生物医学工程中心上海200438 复旦大学工程与应用技术研究院上海200438

皮质骨是一种高衰减、各向异性、高声阻抗的多层生物组织.其结构和材料特性导致高频超声难以穿透其多层结构,从而获取高质量图像.传统超声动态聚焦成像以均匀声速假设为前提,且受制于发射能量和帧率,难以实现多层结构的准确、快速重建,... 详细信息

皮质骨是一种高衰减、各向异性、高声阻抗的多层生物组织.其结构和材料特性导致高频超声难以穿透其多层结构,从而获取高质量图像.传统超声动态聚焦成像以均匀声速假设为前提,且受制于发射能量和帧率,难以实现多层结构的准确、快速重建,限制其临床应用的推广.针对以上问题,本文提出一种基于相位迁移的平面波骨成像方法(PSM-PW-vi),实现了皮质骨多层结构的精确和快速重建.首先利用超声走时反演估计成像区域的声速分布;然后应用频域相位迁移平面波相干复合方法并行重建上下两个相控阵探头对应的超声图像;最后将两幅图像融合得到完整的皮质骨超声图像.仿真、仿体、离体实验共同验证了该方法的有效性.无论是三层还是五层模型的皮质骨,其厚度的平均误差均小于0.2 mm,相对误差小于7%.此外,与基于相位迁移合成孔径(PSM-SA)方法相比,在相同的工作频率下,该方法具有更深的成像深度和更快的成像速度.实验结果表明,该方法是一种准确高效的皮质骨超声成像方法,对超声骨成像技术的发展和临床研究具有一定的借鉴意义.

关键词：平面波成像皮质骨多层介质频域

定量三维彩色多普勒超声联合血清β-HCG检查对胎盘功能低下的诊断

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昆明医科大学学报 2015年第5期36卷 58-60页

作者：黄燕玲他林坤徐飞袁娇昆明医科大学第四附属医院超声科云南昆明650021

目的评估定量三维彩色能量多普勒超声(three-dimensional color power Doppler ultrasound,3D-CPD)联合β-HCG检查对胎盘功能低下的诊断价值.方法选择2012年5月至2014年3月在昆明医科大学第四附属医院接受产检的产妇368例,利用GE公司E8... 详细信息

目的评估定量三维彩色能量多普勒超声(three-dimensional color power Doppler ultrasound,3D-CPD)联合β-HCG检查对胎盘功能低下的诊断价值.方法选择2012年5月至2014年3月在昆明医科大学第四附属医院接受产检的产妇368例,利用GE公司E8三维超声系统对胎盘的血管化指数(vi)、血流指数(FI)和血管化-血流指数(VFI)进行测量,同时利用化学发光法测定β-HCG水平.并在产后记录新生儿体长、体重和生命体征综合评分(Apgar评分).结果产后共有58例新生儿体重2 500 g,为对照组.对照组vi、FI和VFI分别为(12.5±5.6)、(47.2±3.3)和(9.0±2.6),观察组为(10.2±4.8)、(40.6±4.1)和(4.2±1.7),差异具有统计学意义(P<0.05);观察组β-HCG水平为(29453.0±229.5)m IU/m L,中位数≥2.5 mom,对照组β-HCG水平为(8 442.6±47.2)m IU/m L,中位数<2.5mom,观察组β-HCG水平明显高于对照组(P<0.05);新生儿基本情况相比,观察组新生儿体长、体重和Apgar评分明显低于对照组(P<0.05).结论 3D-CPD联合β-HCG检查对胎盘功能异常具有重要的诊断价值,有利于围产期了解胎盘功能及估计胎儿预后.

关键词：定量三维彩色能量多普勒超声 β-HCG 胎盘功能异常

超声血流指标联合孕中期血清HCG观察胎盘功能

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昆明医科大学学报 2017年第6期38卷 102-107页

作者：黄燕玲陆永萍他林昆徐飞张琼云南省第二人民医院昆明医科大学第四附属医院超声科云南昆明650021

目的探讨如何预测并有效定量评判胎盘功能.方法收集研究对象1 157例,超声测量胎盘血流参数;观察胎盘绒毛血管;记录孕妇血清游离β-HCGMoM值;记录新生儿体长、体重和生命体征综合评分.结果(1)血清游离β-HCGMoM值≥2.5宫内发育迟缓发生... 详细信息

目的探讨如何预测并有效定量评判胎盘功能.方法收集研究对象1 157例,超声测量胎盘血流参数;观察胎盘绒毛血管;记录孕妇血清游离β-HCGMoM值;记录新生儿体长、体重和生命体征综合评分.结果(1)血清游离β-HCGMoM值≥2.5宫内发育迟缓发生率显著增加;(2)宫内发育迟缓胎盘二、三级绒毛动脉管径细小,二、三级动脉数量明显减少;三级绒毛动脉显示率仅为38%,其显示率明显低于正常妊娠;胎盘三维能1量多普勒血流指数vi、FI、VFI低于正常妊娠.结论孕妇血清游离β-HCGMoM值≥2.5时,存在胎盘功能异常风险,胎盘绒毛血管及胎盘三维能量多普勒血流指数vi、FI、VFI可定性及定量评价胎盘功能.

关键词：超声血流指标 β-HCG 胎盘功能不全