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An Early Tertiary Vertebrate Fauna from Yuauchü

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地质学报 1937年第Z1期 420-445页

作者： c.c.YOUNG cenozoic Research Laboratory Geological Survey of china

In the Yuanchü-Mienchih border along the Huangho,a very promis-ing early Tertiary basin was known and first reported by Andersson.;The fauna was later described by Zdansky.;Although most of the formsdescribed are in ... 详细信息

关键词： An Early Tertiary Vertebrate Fauna from Yuauch

Simulation of Nigerian crude Oil Types for Modular Refinery (Topping Plant) Operations

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Advances in chemical Engineering and Science 2022年第4期12卷 218-232页

作者： Adeloye Olalekan michael Afolayan Joel Tobi cyrus Aseibichin Department of chemical/Petrochemical Engineering Rivers State University Port Harcourt Nigeria

This research study focused on the need to curb scarcity and importation of petroleum finished products in oil-producing nation Nigeria through the operation of conventional modular refineries in conjunction with major refineries operating efficiently. Hence, the study focused on the suitability and operations of conventional modular refinery processes by considering twenty different types of Nigerian crude oil for crude oil assay analysis and classification using Aspen Hysys. The crude oil assay results categorized the twenty Nigerian crude oil types as light and medium sweet crude, while based on recovery volume percent at a true boiling point of 370℃, the twenty crude oil types were categorized into Group A (crude oil with recovery volume above 80%), Group B (crude oil with recovery volume between 70% and 79%) and Group c (crude oil with recovery volume below 70%) respectively. Besides, light and medium sweet oil types were simulated in a conventional modular refinery (topping plant) at different numbers of column trays (25, 29, 35, 40 and 48) to determine their product yield. Based on product yield and equipment costs at different numbers of tray columns, a modular refinery with twenty-nine column trays was applied in this study. Thus, twenty Nigerian crude oil types were simulated in a conventional modular refinery of 30,000 barrel per day capacity and twenty-nine column trays respectively to evaluate their product yield and tray compositions.

关键词： Topping Plant column Tray Number Products Recovery Volume Equipment cost Simulation Aspen Hysys

On tho Triassic Dicynodonts from Shansi

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地质学报 1937年第Z1期 400-418页

作者： c.c.YOUNG cenozoic Research Laboratory GeologicaI Survey of china

The occurrence of Dicynodonts in the Triassic beds and short accountson the geological conditions in south-eastern Shansi has already beenreported on an earlier paper.;The present note deals with the descrip-tion of t... 详细信息

关键词： On tho Triassic Dicynodonts from Shansi than

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英语科普文选

英语科普文选

作者： G.c.·索恩利(G.c. Thornley)

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英语科普文选

英语科普文选

clinically relevant factors associated with quantitative optical coherence tomography angiography metrics in deep capillary plexus in patients with diabetes

作者： G.c.·索恩利(G.c. Thornley)

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Eye and Vision 2020年第1期7卷 64-74页

作者： Fang Yao Tang Erica O.chan Zihan Sun Raymond Wong Jerry Lok Simon Szeto Jason c.chan Alexander Lam clement c.Tham Danny S.Ng carol Y.cheung Department of Ophthalmology and Visual Sciences The Chinese University of Hong KongHong Kong Special Administrative RegionKowloonChina Hong Kong Eye Hospital Hong Kong Special Administrative RegionKowloonChina cUHK Eye centre Hong Kong Eye Hospital147K Argyle StreetKlnKowloonHong KongChina

Background:To test clinically relevant factors associated with quantitative artifact-free deep capillary plexus(DcP)metrics in patients with diabetes mellitus(DM).Methods:563 eligible eyes(221 with no diabetic retinopathy[DR],135 with mild DR,130 with moderate DR,and 77 with severe DR)from 334 subjects underwent optical coherence tomography-angiography(OcT-A)with a swept-source OcT(Triton DRI-OcT,Topcon,Inc.,Tokyo,Japan).Strict criteria were applied to exclude from analysis those DcP images with artifacts and of poor quality,including projection artifacts,motion artifacts,blurriness,signal loss,B-scan segmentation error,or low-quality score.A customized MATLAB program was then used to quantify DcP morphology from the artifact-free DcP images by calculating three metrics:foveal avascular zone(FAZ),vessel density(VD),and fractal dimension(FD).Results:166(29.5%)eyes were excluded after quality control,leaving in the analysis 397 eyes(170 with no DR,101 with mild DR,90 with moderate DR,36 with severe DR)from 250 *** the multiple regression models,larger FAZ area was associated with more severe DR(β=0.687;p=0.037),shorter axial length(AL)(β=−0.171;p=0.003),thinner subfoveal choroid thickness(β=−0.122;p=0.031),and lower body mass index(BMI)(β=−0.090;p=0.047).Lower VD was associated with more severe DR(β=−0.842;p=0.001),shorter AL(β=0.107;p=0.039),and poorer visual acuity(VA)(β=−0.133;p=0.021).Lower FD was associated with more severe DR(β=−0.891;pconclusions:Quantitative artifact-free DcP metrics are associated with VA,DR severity,AL,subfoveal choroidal thickness,age,and BMI in diabetic *** effects of ocular and systemic factors should be considered for meaningful interpretations of DcP changes in DM patients.

关键词： Optical coherence tomography angiography Diabetic retinopathy Deep capillary plexus Visual acuity

Manufacture and characterization of graphene membranes with suspended silicon proof masses for MEMS and NEMS applications

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Microsystems & Nanoengineering 2020年第1期6卷 1050-1066页

作者： Xuge Fan Anderson D.Smith Fredrik Forsberg Stefan Wagner Stephan Schroder Sayedeh Shirin Afyouni Akbari Andreas c.Fischer Luis Guillermo Villanueva Mikael Ostling Max c.Lemme Frank Niklaus Division of Micro and Nanosystems School of Electrical Engineering and Computer ScienceKTH Royal Institute of TechnologySE-10044 StockholmSweden Division of Integrated Devices and circuits School of Electrical Engineering and Computer ScienceKTH Royal Institute of TechnologySE-16440 KistaSweden Faculty of Electrical Engineering and Information Technology RWTH Aachen UniversityOtto-Blumenthal-Str.2552074 AachenGermany Advanced NEMS Group École Polytechnique Fédérale de Lausanne(EPFL)1015 LausanneSwitzerland Silex Microsystems AB 17526 JärfällaSweden AMO GmbH Advanced Microelectronic Center Aachen(AMICA)Otto-Blumnethal-Str.2552074 AachenGermany

Graphene’s unparalleled strength,chemical stability,ultimate surface-to-volume ratio and excellent electronic properties make it an ideal candidate as a material for membranes in micro-and nanoelectromechanical systems(MEMS and NEMS).However,the integration of graphene into MEMS or NEMS devices and suspended structures such as proof masses on graphene membranes raises several technological challenges,including collapse and rupture of the *** have developed a robust route for realizing membranes made of double-layer cVD graphene and suspending large silicon proof masses on membranes with high *** have demonstrated the manufacture of square graphene membranes with side lengths from 7µm to 110µm,and suspended proof masses consisting of solid silicon cubes that are from 5µm×5µm×16.4µm to 100µm×100µm×16.4µm in *** approach is compatible with wafer-scale MEMS and semiconductor manufacturing technologies,and the manufacturing yields of the graphene membranes with suspended proof masses were>90%,with>70%of the graphene membranes having>90%graphene area without visible *** measured resonance frequencies of the realized structures ranged from tens to hundreds of kHz,with quality factors ranging from 63 to *** graphene membranes with suspended proof masses were extremely robust,and were able to withstand indentation forces from an atomic force microscope(AFM)tip of up to~*** proposed approach for the reliable and large-scale manufacture of graphene membranes with suspended proof masses will enable the development and study of innovative NEMS devices with new functionalities and improved performances.

关键词： proof characterization hundreds

A New Theory on the Origin of Fusain

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地质学报 1938年第2期 191-196页

作者： c.c.HSIAO Fuel Research Division of the chemical Laboratory National Geological Survey of china

The occurrence of fusain in practically all the coal deposits and itsdistinctly different properties as compared with those of other constituentsof coal have stimulated many speculations in regard to its mode *** vari... 详细信息

关键词： Th A New Theory on the Origin of Fusain