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Astronomers detect the closest example yet of a black hole devouring a star（图）
黑洞 吞噬恒星 红外天文学
2023/6/9
Once every 10,000 years or so, the center of a galaxy lights up as its supermassive black hole rips apart a passing star. This “tidal disruption event” happens in a literal flash, as the central black...
李森,朱红涛* 等资源学院构造与油气资源教育部重点实验室. AAPG Bulletin, 2019. Seismic-based identification and stage analysis of overlapped compound sedimentary units in rifted lacustrine basins: An example from the Bozhong sag, Bohai Bay Basin, China
三维；地震；数据；油气；勘探
2021/10/20
近日，中国地质大学资源学院朱红涛教授团队在国际顶级石油地质期刊《AAPG Bulletin》上刊发研究成果，系统建立了基于三维地震资料的陆相断陷湖盆复合沉积体识别及期次划分方法，并以渤海湾盆地东营组大型辫状河三角洲为实例，以所建立方法为指导，精细解剖了辫状河三角洲各期次地震反射结构及平面展布形态，重建三角洲沉积演化过程。研究成果对陆相断陷湖盆无井、少井区沉积储层精细刻画及含油气圈闭评价具有重要的理...
Mathematician reveals world’s oldest example of applied geometry
land survey Creating right angles Si.427 trigonometric function
2021/8/10
A scientist has revealed that an ancient clay tablet could be the oldest and most complete example of applied geometry. The surveyor's field plan from the Old Babylon period shows that ancient mathema...
Winter Climate Shapes Spring Phytoplankton Development in Non-Ice-Covered Lakes: Subtropical Lake Taihu as an Example
Subtropical Lake Taihu Winter Climate Spring Phytoplankton
2021/7/28
Winter warming plays a vital role in spring phytoplankton community succession in temperate lakes due to variation of ice cover duration in winter.
Earliest example of a rapid-fire tongue found in 'weird and wonderful' extinct amphibians（图）
Earliest example rapid-fire tongue extinct amphibians
2020/11/20
Fossils of bizarre, armored amphibians known as albanerpetontids provide the oldest evidence of a slingshot-style tongue, a U.S. National Science Foundation-funded study published in Sc...
STUDY ON THE SPECTRAL MIXING MODEL FOR MINERAL PIGMENTS BASED ON DERIVATIVE OF RATIO SPECTROSCOPY-TAKE VERMILION AND STONE YELLOW FOR EXAMPLE
Chinese Historical Paintings, Mineral Pigments, Spectral Mixing Model, Derivative of Ratio Spectroscopy, Quantitative Analysis
2018/5/16
Hyperspectral remote sensing is a completely non-invasive technology for measurement of cultural relics, and has been successfully applied in identification and analysis of pigments of Chinese histori...
Application of CSAMT in hydrogeology exploration in Shandong Province–An example from geothermal exploration in Changdao County (south four islands)
CSAMT Faults Heat storage anomaly Island hotspring
2018/3/23
The geophysical exploration in Changdao County is conducted using controlled source audio-frequency magnetotelluric (CSAMT) method. The inversion results reveal obvious evidences of one existed fault ...
GEOMATIC 3D MODELING OF A STATUE (ALSO) FOR STRUCTURAL ANALYSIS AND RISK EVALUATION: THE EXAMPLE OF SAN GIOVANNINO MARTELLI IN FLORENCE
Laser scanning 3D Modeling Cultural Heritage Structural Analysis Level of Detail Finite Element Method
2017/6/20
This work has been developed among the researches of a PhD thesis in Civil and Environmental Engineering and Architecture of the University of Udine in cooperation with the GECO Laboratory of the Univ...
Electric Field Effects on Emission Line Shapes when Electron Transfer Competes with Emission:an Example from Photosynthetic Reaction Centers
RHODOBACTER-SPHAEROIDES R-26 PRIMARY CHARGE SEPARATION RHODOPSEUDOMONAS-VIRIDIS BACTERIAL PHOTOSYNTHESIS FEMTOSECOND SPECTROSCOPY PROTEIN SUBUNITS 3A RESOLUTION PRIMARY DONOR SPECTRA
2016/5/23
Electron-transfer reactions are expected to be particularly sensitive to externally applied electric fields because of the presence of charge-separated, dipolar states, and the effects of the field on...
Magnetic Field Effects on Reaction Yields in the Solid-State:An Example from Photosynthetic Reaction Centers
Magnetic Field Reaction Yields in the Solid-State Photosynthetic Reaction Centers
2016/5/20
Prior to 1970there were several reports of the effects of magneticfields on chemical reactions, though there was muchrebuttal and retraction in this early literature (1-3). Since 1970, the number of r...
The Use of Large Magnetic Fields to Probe Photoinduced Electron Transfer Reactions:An Example from Photosynthetic Reaction Centers
Large Magnetic Fields Photoinduced Electron Transfer Reactions Photosynthetic Reaction Centers
2016/5/20
We will outline an experimental approach that uses large magnetic fields and simple optical methods, combined with a method of data analysis, that is ideally suited for studying the mechanism of rapid...
Aeromagnetic map compilation: procedures for merging and an example from Washington
aeromagnetic data Antartica
2015/9/28
Rocks in Antarctica and offshore have widely diverse magnetic properties. Consequently, aeromagnetic data collected there can improve knowledge of the geologic, tectonic and geothermal characteristics...
An Example of a Nearly Integrable Hamiltonian System with a Trajectory Dense in a Set of Maximal Hausdorff Dimension
Nearly Integrable Hamiltonian System Trajectory Dense Maximal Hausdorff Dimension
2015/9/25
The famous ergodic hypothesis suggests that for a typical Hamiltonian on a typical energy surface nearly all trajectories are dense. KAM theory disproves it.Ehrenfest (The Conceptual Foundations of th...
Normally Hyperbolic Invariant Laminations and diffusive behaviour for the generalized Arnold example away from resonances
Hyperbolic Invariant Laminations generalized Arnold away from resonances
2015/9/25
In this paper we study existence of Normally Hyperbolic Invariant Laminations (NHIL) for a nearly integrable system given by the product of the pendulum and the rotator perturbed with a small coupling...
What is a surprise earthquake? The example of the 2002, San Giuliano (Italy) event
earthquake statistics Molise earthquake
2015/9/10
Both in scientific literature and in the mass media, some earthquakes are defined as 玸urprise earthquakes?
Based on his own judgment, probably any geologist, seismologist or engineer may have his own...