搜索结果: 1-15 共查到“工学 index”相关记录164条 . 查询时间(0.188 秒)
光电信息大讲堂第210期：From discovery of random Raman lasing via natural Rayleigh scattering in ultra-long fibers to unique lasing and sensing features of multimode and multicore fibers with fs-inscribed regular and random 3D refractive-index structures
拉曼光纤激光器 输出光束 折射率光纤
2023/4/17
在二极管泵浦的拉曼光纤激光器的多模渐变折射率光纤中，通过飞秒脉冲刻写FBG，可产生接近衍射极限的输出光束。这一技术已经应用于工业（通信、生物医学、材料加工、基础设施和能源行业）中的各种激光和传感器系统。从超长光纤自然瑞利散射引起的随机拉曼激光的发现出发，主讲人将介绍使用fs脉冲刻写具有规则/随机的3D折射率结构的多模、多芯光纤的技术，以及新型光纤所具有的独特激光和传感性能，这种新型光纤有望在物理上...
广西大学物理科学与工程技术学院孙文红团队在自然指数（Nature Index）期刊《Applied Physics Letters》上发表重要成果并被选为“Editor's Pick”（图）
金属半导体 直流摩擦电 纳米发电机 MSDC-TENG
2022/6/28
近日，物理科学与工程技术学院孙文红团队在Nature Index著名学术期刊《Applied Physics Letters》上发表了题为“A Cu/P-type GaN triboelectric nanogenerator with power density over 100 W/m2”的研究论文。该论文被编辑选为“Editor's Pick”文章，在APL官网首页加以重点展示（Editor...
Index selection for growth and construction wood properties in Pinus elliottii open-pollinated families in southern China
growth construction wood properties Pinus elliottii open-pollinated families
2023/6/5
The initial introduction of Pinus elliottii (PEE) to China occurred in the 1930s, and the planting of this conifer species has now attained close to 3 million ha in the subtropical zone of southern Ch...
青岛大学电子信息学院杨振宇博士在自然指数（Nature Index）期刊《Applied Physics Letters》上发表重要成果并被选为“Editor's Pick”（图）
青岛大学电子信息学院 杨振宇 自然指数 Applied Physics Letters Editor's Pick
2022/2/13
近日，电子信息（微纳技术）学院青年教师杨振宇博士在Nature Index著名学术期刊《Applied Physics Letters》上发表了题为“The photovoltaic and photoconductive photodetector based on GeSe/2D semiconductor van der Waals heterostructure”的研究论文。该论文被编辑选...
6月28日，《自然》（Nature）杂志同步发行Nature Index 2018年环境科学特刊（Nature Index 2018 Environmental Science）。该期特刊报道介绍了复旦大学EGeo-X学科群的建设背景和目标，重大成果与建设蓝图（https://www.nature.com/articles/d42473-018-00050-y）。EGeo-X学科群是以自然生态环境...
西南交通大学地学学院王玉峰博士后等在国际著名地学类（Nature Index）期刊JGR-Solid Earth上发表学术论文（图）
西南交通大学地学学院 王玉峰 博士后 国际著名地学类
2018/4/26
高速远程滑坡（rock avalanches；sturzstorms）作为具有极端破坏力的地质灾害现象，最显著的特征表现在具有巨大的体积（一般在数百万方以上，可达几千万方、几亿方、十几亿方甚至几十亿方、上百亿方）、超常的高速度（迄今为止，已知两个高速远程滑坡的最大速度分别达213 m/s和278 m/s）、难以预料的超常滑距（最大水平滑距Lmax是最大垂直落差Hmax的30倍，甚至更大；滑程可达几...
A zero-index waveguide（图）
zero-index waveguide
2017/10/25
In 2015, researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) developed the first on-chip metamaterial with a refractive index of zero, meaning that the phase o...
Meng et al. (1) measured the effect of macronutrients and fiber on postprandial glucose responses and meal glycemic index (GI) and glycemic load determinations and concluded that uncertainty in the de...
HETEROGENEITY INDEX FOR THE ASSESSMENT OF RELATIONSHIP BETWEEN LAND USE PATTERN AND ROAD TRAFFIC CONGESTION IN APAPA-OWOROSHOKI EXPRESS WAY, LAGOS METROPOLIS
Traffic Congestion Land-Use Heterogeneity Index AHP
2017/7/12
The problem of urban mobility is complicated by traffic delay, resulting from poor planning, high population density and poor condition of roads within urban spaces. This study assessed traffic conges...
Biomarker-calibrated nutrient intake and healthy diet index associations with mortality risks among older and frail women from the Women’s Health Initiative
aging biomarker frailty inflammation mortality
2018/11/14
Background: Although studies to date have confirmed the association between nutrition and frailty, the impact of dietary intake and dietary patterns on survivorship in those with frailty is yet to be ...
Glycemic index is as reliable as macronutrients on food labels
Glycemic index macronutrients food labels
2018/11/13
In a recent article, Matthan et al. (1) measured glucose and insulin responses elicited by 50-g available carbohydrate portions of white bread and glucose in 63 subjects. They concluded that the subst...
Effect of macronutrients and fiber on postprandial glycemic responses and meal glycemic index and glycemic load value determinations
glycemic index glycemic load healthy participants macronutrients and fiber variability
2018/11/13
Background: The potential confounding effect of different amounts and proportions of macronutrients across eating patterns on meal or dietary glycemic index (GI) and glycemic load (GL) value determina...
LAND USE AND LAND COVER CHANGES AND URBAN SPRAWL IN RIYADH,SAUDI ARABIA:AN ANALYSIS USING MULTI-TEMPORAL LANDSAT DATA AND SHANNON'S ENTROPY INDEX
Land Use Land Cover Change Shannon’s Entropy Riyadh
2016/12/1
The city of Riyadh, Saudi Arabia has experienced rapid population growth and urban expansion over the past several decades. Due to such growth, the capital city faces many short and long-term social a...
CROP SPECIES RECOGNITION AND DISCRIMINATION PADDY-RICE-GROWINGFIELDS FROM REAPED-FIELDS BY THE RADAR VEGETATION INDEX (RVI) OF ALOS-2/PALSAR2
radar vegetation index RVI ALOS-2 PALSAR2 crop biomass rice paddy fields
2016/12/1
The Japanese ALOS-2 satellite was launched on May 24th, 2014. It has the L-band SAR, PALSAR-2. Kim,Y. and van Zyl, J.J. proposed a kind of Radar Vegetation Index (RVI) as RVI = 8 * σ0hv / (σ0hh + σ0vv...
A NOVEL INDEX FOR ATMOSPHERIC AEROSOL TYPES CATEGORIZATION WITH SPECTRAL OPTICAL DEPTHS FROM SATELLITE RETRIEVAL
AOD SSA Aerosol Type NGAI MODIS AERONET
2016/11/30
In general, the type of atmospheric aerosols can be efficiently identified with the characteristics of optical properties, such as Ångström exponent (AE) and single scattering albedo (SSA). ...