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High-Responsivity ZnS Schottky Barrier photodiode array for Ultraviolet Imaging

Journal of Semiconductors 2002年第8期23卷 892-896页

作者：沈大可韩高荣 S.Y.Au 葛惟昆 I.K.Sou 浙江大学硅材料国家重点实验室杭州310027 香港科技大学物理系

A different approach,using the molecular beam epitaxy (MBE)-grown ZnS-based Schottky photodiode technology,is applied to fabricate an 8×8 photodiode *** micro-processing procedures of this photodiode array including standard photolithography,a number of metallisation,wet-chemical etching and SiO_2 deposition for insulation are *** detector is characterized to have a cutoff wavelength at 340 nm and the photo-responsivity measurements on the pixels result an ultraviolet (UV) response as high as 0.15 A/W,corresponding to an external quantum efficiency of 55% in the visible-blind spectral ranging from 400 down to *** tests indicate that this array is able to capture the intensity profile of a given UV light source with reasonably good capability.

关键词： ZnS-based Schottky barrier photodiode array MBE high-responsivity

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Chemical compounds as well as antioxidant and litholytic activities of Arbutus unedo L. leaves against calcium oxalate stones

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Journal of Integrative Medicine 2019年第6期17卷 430-437页

作者： Rabie Kachkoul Tarik Squalli Housseini Mohamed Mohim Radouane El Habbani Youssef Miyah Anissa Lahrichi Laboratory of Biochemistry Faculty of Medicine and PharmacyUniversity Sidi Mohammed Ben AbdellahBP 1893FezMorocco Faculty of Science and Technology University Sidi Mohammed Ben AbdellahBP 2202FezMorocco Laboratory of Molecular Bases in Human Pathology and Therapeutic Tools Faculty of Medicine and PharmacyUniversity Sidi Mohammed Ben AbdellahBP 1893FezMorocco Department of Nephrology University Hospital HassanⅡBP 1835AtlasFezMorocco

Objective: The present study aimed to quantify and identify the bioactive compounds of the Arbutus unedo L. leaves in order to evaluate both their antioxidant properties and litholytic activities against calcium oxalate ***: This survey was carried out using hydroalcoholic extract(***) and infusion(***) of A. unedo leaves. The quantification of phenolic compounds, flavonoids, flavonols and anthocyanins was done by spectrophotometric methods and identification of chemical components was performed by ultraperformance liquid chromatography with photodiode array and electrospray ionization tandem mass spectrometry. Antioxidant activity was measured using the 1,1-diphenyl-2-picrylhydrazyl(DPPH)method and by the ferric reducing/antioxidant power(FRAP) assay. Litholytic activity of *** and *** was studied using a special model that resembles circuitry of the urinary ***: *** showed greater antioxidant efficacy than ***(P < 0.05). Its higher efficiency was shown via the values of median inhibitory concentration, which was close to(76.14 ± 0.91) mg/mL for *** versus(202.64 ± 5.77) lg/mL for *** using the DPPH method, and(53.77 ± 0.81) lg/mL for *** versus(236.86 ± 31.90) lg/mL for ***, using FRAP method. *** exhibited significantly higher litholytic activity compared to ***(P < 0.05), with dissolution values of 31.03% ± 0.63% versus 14.55% ± 0.65%, ***: Overall, the results suggest that the A. unedo is rich in bioactive compounds, and possesses antioxidant and litholitic abilities that are worthy of further study.

关键词： Antioxidant activity Arbutus unedo L Litholytic activity Phenolic compounds Liquid chromatography photodiode array Electrospray ionization tandem Mass spectrometry

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Short Range Laser Rangefinder Employing False Target Rejection

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Semiconductor Photonics and Technology 1999年第4期5卷 238-241页

作者： NaumanSiddiqui CHENYan－ru 等 NanjingUniversityofScienceandTechnology Najing210094CHN NanjingUniversityofScienceandTechnology Naji

Till now a laser rangefinder has been used to find the range of a stationary target or the variations and deformities of a plane surface like in the manufacturing *** concept in the design of a laser rangefinder for a moving target is *** is based on triangulation method of ranging and combines with a threefold false target rejection circuit to eliminate the possibility of false target indication due to light reflected by any obstruction in the line of sight of laser source and the target. The false target rejection is done twice through hardware and once through software.

关键词： Laser Rangefinder photodiode array Triangulation Method

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