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Removal of Cu and Ni by Free and Immobilized Microalgae

Biomedical and Environmental Sciences 1992年第2期5卷 99-108页

作者： M.h.wong D.C.h.PAK Department of Biology Hong Kong Baptist College 224 Waterloo Road KowloonDepartment of Biology Hong Kong Baptist College 224 Waterloo Road Kowloon Hong KongHong Kong

The present investigation evaluated the effectiveness of Chlorella cells in concentrating Cu and Ni in their cells and thereby removing the two metals from solution. The removal efficiency of the two metals by free and immobilized algal cells were further studied. (1) Four types of Chlorella cells, namely Chlorella pyrenoidosa (26) (from Carolina Biological Supplies Company), Chlorella hKBC-1 and-2 (isolated from a polluted stream receiving wastewater from several electroplating factories) and Chlorella hKBC-3 (from a clean water pond) were subjected to different concentrations of Cu and Ni accordingly. It was revealed that Chlorella hKBC-1 was the most tolerant species toCu and Ni as reflected by their highest values of 48 h and 96 h 'highest no effect concentrations' (The highest concentration of the tested substance that does not inhibit the growth rate of the alga: Cu 2 and Ni 10 mg/1 at 48 h, Cu 2 and Ni 5 at 96 h). This was followed by C. pyrenoidosa (26) and then C. hKBC-2 while C. hKBC-3 had the lowest tolerance to the two metals (Cu 0.5 and Ni 2 at 48 h; Cu 0.5 and Ni 1 mg/1 at 96 h). (2) It was further revealed that C. hKBC-1 had higher concentration factors and removal efficiencies of Ni (734-963 mg/1, 16.3-18.7%) and C. hKBC-2 had higher concentration factors and removal efficiencies of Cu (2316-2839 mg/1, 53.7-66%) when exposed to lower concentrations of Cu (0.5,1 and 2 mg/1) and Ni (5, 10 and 13 mg/1). (3) By treating the free and immobilized algal cells (algal cells entrapped in alginate beads) with different concentrations of Cu and Ni, it was observed that free cells had higher concentration factors and removal efficiencies when compared with immobilized cells (free cells: Cu 1577-3056 mg/1, 24.2-71.4%; Ni 355-849 mg/1, 4.8-18.7%; immobilized cells: Cu 453-935 mg/1, 13.9-53.2%; Ni 244-486 mg/1, 3.2-11.9%).

关键词： Removal of Cu and Ni by Free and Immobilized Microalgae Cu Ni

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人类应该吃什么?

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环球科学 2024年第15期 22-29页

作者：凯特·王郭林(翻译) 《科学美国人》莫斯科大学生物系人类学教研室

一些社交平台上的“营养专家”建议我们应该像祖先那样只吃肉类。但实际上,我们的祖先并没有这样的饮食习惯。保罗·萨拉迪诺(Paul Saladino)正在锯一根牛的腿骨,他光着膀子,手臂上的肱二头肌随着动作鼓动。骨头终于锯开,围观者爆发出... 详细信息

一些社交平台上的“营养专家”建议我们应该像祖先那样只吃肉类。但实际上,我们的祖先并没有这样的饮食习惯。保罗·萨拉迪诺(Paul Saladino)正在锯一根牛的腿骨,他光着膀子,手臂上的肱二头肌随着动作鼓动。骨头终于锯开,围观者爆发出一阵欢呼。萨拉迪诺的脸上浮现出一抹笑意,再次确认自己还在镜头里。随即,他从腿骨中出一勺骨髓,倒进旁边一位迫不及待的年轻女士口中,好像牧师在分发圣餐一样。

关键词：饮食习惯圣餐腿骨社交平台营养专家肱二头肌围观者祖先

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家国谜韵下的心声疑影:战后华语电影中的“希区柯克幽灵”

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海南师范大学学报（社会科学版） 2024年第2期37卷 25-32页

作者：王培雷上海外国语大学贤达经济人文学院艺术与传媒学院上海200216

1948年由位于北京城的“中电三厂”出品的电影《深闺疑云》,直接回应了在抗战期间上海曾经上映过的希区柯克导演的作品《深闺疑云》(Suspicion),在剧本人物权力关系的置换中完成了因应战乱时代的集体焦虑表达,同1950至60年代由中国香港... 详细信息

1948年由位于北京城的“中电三厂”出品的电影《深闺疑云》,直接回应了在抗战期间上海曾经上映过的希区柯克导演的作品《深闺疑云》(Suspicion),在剧本人物权力关系的置换中完成了因应战乱时代的集体焦虑表达,同1950至60年代由中国香港生产、改编自希区柯克作品《后窗》《迷魂记》的粤语电影《后窗》《回魂夜》一起,组成了一条清晰的华语电影“借桥”希区柯克的脉络。徐昌霖版《深闺疑云》、中国香港版《后窗》和《回魂夜》等三部电影虽然都不曾明确宣布对西片原作的借重,但不约而同步地走上了一条与传统意义上的中国侦探电影或“含有侦探内容”的电影截然不同的“心探”路径。这三部侦探电影作品不仅承继了相关类型的商业特征,更在顺势应时的具体改编中回应了20世纪中期中国内地与中国香港变动不居的社会政治经济格局,形成了“仿作者以言志”或“解构作者以言志”的独特电影创作兴味。同时,这些影片中叙事策略的“伦理化”倾向,直接导致了对希区柯克电影之于好莱坞工业“解构性”的再度解构,形成了既符合不同时代的华语电影主流受众的认同,同时亦体现创作者自身的“电影本体”探索的电影文本转译特点。

关键词：华语电影希区柯克空间建构悬念伦理剧

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Slide-free histological imaging by microscopy with ultraviolet surface excitation using speckle illumination

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Photonics Research 2022年第1期10卷 120-125页

作者： IVY h.M.wong YAN ZhANG ZhENGhUI ChEN LEI KANG TERENCE T.w.wong Translational and Advanced Bioimaging Laboratory Department of Chemical and Biological EngineeringHong Kong University of Science and TechnologyHong KongChina

Microscopy with ultraviolet surface excitation(MUSE)is a promising slide-free imaging technique to improve the time-consuming histopathology ***,since the penetration depth of the excitation light is tissue dependent,the image contrast could be significantly degraded when the depth of field of the imaging system is shallower than the penetration ***-resolution cellular imaging normally comes with a shallow depth of field,which also restricts the tolerance of surface roughness in biological *** we propose the incorporation of MUSE with speckle illumination(termed MUSES),which can achieve sharp imaging on thick and rough *** experimental results demonstrate the potential of MUSES in providing histological images with~1μm spatial resolution and improved contrast,within 10 minutes for a field of view of 1.7 mm×1.2 *** the extended depth of field feature,MUSES also relieves the constraint of tissue ***,with a color transformation assisted by deep learning,a virtually stained histological image can be generated without manual tuning,improving the applicability of MUSES in clinical settings.

关键词： excitation illumination speckle

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Tuning electroluminescence performance in Pr-doped piezoelectric bulk ceramics and composites

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Journal of Materiomics 2021年第2期7卷 264-270页

作者： hailing Sun Manchung wong Guofu Zhou K.w.Kwok Guangdong Provincial Key Laboratory of Optical Information Materials and Technology&Institute of Electronic Paper Displays South China Academy of Advanced OptoelectronicsSouth China Normal UniversityGuangzhou510006China Department of Applied Physics The Hong Kong Polytechnic UniversityKowloonChina

Alternating current electroluminescence(ACEL)shows great potential in lighting,display and intelligent ***,the ACEL properties of Pr3þ-doped Ba0$85Ca0$15Ti0$90Zr0$10O3 ceramic and its PDMS-based composite have been *** red EL emission was obtained in the ceramic sample whereas blue EL emission of Pr3þwas observed for the first time in the composite *** red EL emission should be attributed to the impact of hot electrons driven by the large piezoelectric electric *** to the cross-relaxations through the 4f5d levels and Pr-to-metal charge transfer state,the 3 PJ emissions were completely quenched,and thus leading to an enhancement in red ***,external E field induced a large local piezoelectric deformation of the ceramic particles embedded in the PDMS matrix,which in turn caused a bending of CB and then a downwards shift of the 4f5d levels from the *** the cross-relaxations were hindered,and the blue EL emission was observed in the *** results would attract attention of functional materials studies and expand our understanding of such facile structure and oxide EL devices to facilitate their use in integral part of flexible device systems.

关键词： Electroluminescence Emission color tuning Ferroelectric. Piezoelectric Doping

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hepatocellular carcinoma in patients with non-alcoholic fatty liver disease

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world Journal of Gastroenterology 2016年第37期22卷 8294-8303页

作者： Carrie R wong Mindie h Nguyen Joseph K Lim Department of Internal Medicine Yale University School of Medicine Division of Gastroenterology and hepatology Stanford University School of Medicine Yale Liver Center Section of Digestive Diseases Yale University School of Medicine

Nonalcoholic fatty liver disease(NAFLD) is the most common chronic liver disease in the United States and represents an increasingly important etiology of hepatocellular carcinoma(hCC) with annual cumulative incidence rates ranging from 2% to 12% in cohorts of NAFLD cirrhosis. while the risk of progression of NAFLD to hCC remains higher among patients with fibrosis or cirrhosis, an increasing amount of literature describes NAFLD-hCC as a disease that can occur in the absence of cirrhosis. Efforts to characterize the pathogenesis of NAFLD-hCC have suggested mechanisms that strongly associate with states of hyperinsulinemia and chronic inflammation, cellular mechanisms including adaptive immune responses and hepatic progenitor cell populations, and genetic polymorphisms including mutations of PNPLA3. Current literature describes NAFLD-hCC mostly as a disease of late presentation with lower rates of receipt of curative therapy and worse prognosis. however, a growing body of evidence has reported comparable and potentially more favorable disease-free and overall survival rates among patients with NAFLD-hCC after receipt of curative treatment. This review summarizes current evidence of epidemiology, pathophysiology, disease presentation, demand and receipt of curative therapy, post-treatment outcomes, and overall survival of NAFLD-associated hCC.

关键词： Fatty liver Nonalcoholic steatohepatitis hepatocellular carcinoma Liver cirrhosis Liver cancer

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Empirical model for fusion cross sections of Ca-induced reactions

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Chinese Physics C 2024年第3期48卷 126-132页

作者： Reddi Rani.L N.Sowmya K.N Sridhar h C.Manjunatha M.M.Armstrong Arasu Department of Physics St.Joseph's College(Autonomous)Affiliated to Bharathidasan UniversityTiruchirappalli620002TNIndia Department of Physics Govt.First.Grade CollegeChikkaballapur-562101KarnatakaIndia Department of Physics Govt.First.Grade CollegeMalur-563160KarnatakaIndia Department of Physics Govt.First.Grade CollegeDevanahalli-562110KarnatakaIndia

A new empirical formula for the astrophysical S-factor has been suggested as a function of the Coulomb interaction parameter,center of mass energy,and barrier *** 22 fusion reactions with ^(40,48)Ca as projectiles were considered for different targets,leading to compound nuclei with atomic and mass numbers varying between 40≤Z≤≤Z≤112 and 88≤A≤27888≤A≤278,*** fusion cross-sections have been estimated using the geometric factor,the Gamow-Sommerfield factor,and the empirical formula for the *** study's findings showed better agreement with those of available experiments when compared to wong's *** present work leads to a smaller standard deviation value than wong's formula when used to correlate the experimental data of calcium-induced fusion ***'s formula provides a good approximation of fusion cross-sections when the center of mass energy is below the fusion barrier when compared to above the fusion barrier.

关键词： fusion cross-sections wong formula Gamow-Sommerfield-factor Geometric-factor S-factor

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Answering Reachability Queries on Incrementally Updated Graphs by hierarchical Labeling Schema

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Journal of Computer Science & Technology 2016年第2期31卷 381-399页

作者： Tak-Lam wong Department of Mathematics and Information Technology The Hong Kong Institute of Education Hong Kong China

we proposed a novel solution schema called the hierarchical Labeling Schema （hLS） to answer reachability queries in directed graphs. Different from many existing approaches that focus on static directed acyclic graphs （DAGs）, our schema focuses on directed cyclic graphs （DCGs） where vertices or arcs could be added to a graph incrementally. Unlike many of the traditional approaches, hLS does not require the graph to be acyclic in constructing its index. Therefore, it could, in fact, be applied to both DAGs and DCGs. when vertices or arcs are added to a graph, the hLS is capable of updating the index incrementally instead of re-computing the index from the scratch each time, making it more efficient than many other approaches in the practice. The basic idea of hLS is to create a tree for each vertex in a graph and link the trees together so that whenever two vertices are given, we can immediately know whether there is a path between them by referring to the appropriate trees. we conducted extensive experiments on both real-world datasets and synthesized datasets. we compared the performance of hLS, in terms of index construction time, query processing time and space consumption, with two state-of-the-art methodologies, the path-tree method and the 3-hop method. we also conducted simulations to model the situation when a graph is updated incrementally. The performance comparison of different algorithms against hLS on static graphs has also been studied. Our results show that hLS is highly competitive in the practice and is particularly useful in the cases where the graphs are updated frequently.

关键词： graph indexing reachability query hierarchical Labeling Schema (hLS) incremental update directed cyclic graph

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香港特别行政区视障读者服务创新探究——以香港城市大学邵逸夫图书馆高等融合教育支持服务为例

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国家图书馆学刊 2024年第2期33卷 74-82页

作者：景祥祜王玮乐肖寒月香港城市大学邵逸夫图书馆中国香港城市大学中国

图书馆是高校教育的第二课堂,融合教育可以应用两阶段服务学习创新模式,来优化视障大学生的高等融合教育体验。香港城市大学“灯塔古迹保育研习实践项目”践行融合教育理念,邀请视障和健视大学生以灯塔共同创作出4项典型项目成果。其中... 详细信息

图书馆是高校教育的第二课堂,融合教育可以应用两阶段服务学习创新模式,来优化视障大学生的高等融合教育体验。香港城市大学“灯塔古迹保育研习实践项目”践行融合教育理念,邀请视障和健视大学生以灯塔共同创作出4项典型项目成果。其中《西屿塔灯历险》案例具体展示了两阶段服务学习的开展方式,探究图书馆在高等融合教育支持服务体系下的视障读者服务创新。图3。表1。参考文献22。

关键词：高等融合教育服务学习视障读者高等教育信息素养框架

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Genomics-driven derivatization of the bioactive fungal sesterterpenoid variecolin:Creation of an unnatural analogue with improved anticancer properties

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Acta Pharmaceutica Sinica B 2024年第1期14卷 421-432页

作者： Dexiu Yan Jemma Arakelyan Teng wan Ritvik Raina Tsz Ki Chan Dohyun Ahn Vladimir Kushnarev Tsz Kiu Cheung ho Ching Chan Inseo Choi Pui Yi ho Feijun hu Yujeong Kim hill Lam Lau Ying Lo Law Chi Seng Leung Chun Yin Tong Kai Kap wong wing Lam Yim Nikolay S.Karnaukhov Richard Y.C.Kong Maria V.Babak Yudai Matsuda Department of Chemistry City University of Hong KongHong Kong SARChina iGEM Team“VarieCure” City University of Hong KongHong Kong SARChina Department of Biomedical Engineering City University of Hong KongHong Kong SARChina Moscow Clinical Research Center Named After A.S.Loginov Moscow 111123Russian Federation

A biosynthetic gene cluster for the bioactive fungal sesterterpenoids variecolin(1)and variecolactone(2)was identified in Aspergillus aculeatus ATCC *** production of 1 and 2 was achieved in Aspergillus oryzae by expressing the sesterterpene synthase VrcA and the cytochrome P450 ***,the replacement of VrcB with homologous P450s from other fungal terpenoid pathways yielded three new variecolin analogues(5-7).Analysis of the compounds’anticancer activity in vitro and in vivo revealed that although 5 and 1 had comparable activities,5 was associated with significantly reduced toxic side effects in cancer-bearing mice,indicating its potentially broader therapeutic *** study describes the first tests of variecolin and its analogues in animals and demonstrates the utility of synthetic biology for creating molecules with improved biological activities.

关键词： Animal studies Anticancer properties Biosynthesis Natural products Sesterterpenoids Synthetic biology Terpene synthases Variecolin

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