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Allometric Equations for Estimating Biomass and Carbon Stocks in Afforested Open Woodlands with Black Spruce and Jack Pine, in the Eastern Canadian Boreal Forest
allometric equations black spruce jack pine boreal forest open woodland afforestation carbon sequestration
2024/1/12
Allometric equations use easily measurable biometric variables to determine the aboveground and belowground biomasses of trees. Equations produced for estimating the biomass within Canadian forests at...
Seemingly Unrelated Mixed-Effects Biomass Models for Black Locust in West Poland
Robinia pseudoacacia carbon sequestration model’s additivity
2024/1/10
Information about tree biomass is important not only in the assessment of wood resources but also in the process of preparing forest management plans, as well as for estimating carbon stocks and their...
Using TLS-Measured Tree Attributes to Estimate above Ground Biomass in Small Black Spruce Trees
terrestrial laser scanning biomass black spruce allometric equations
2023/12/8
Research Highlights: This study advances the effort to accurately estimate the biomass of trees in peatlands, which cover 13% of Canada’s land surface. Background and Objectives: Trees remove carbon f...
Climate Effects on Black Spruce and Trembling Aspen Productivity in Natural Origin Mixed Stands
dynamic models height growth functions mixed effects models biotic and edaphic effects climate change site productivity
2023/12/6
Forest managers need site productivity estimates for tree species growing in mixed stands. Models developed in the past are generally for pure stands and don’t factor in the effects of climate change ...
Ecological Potential of Mediterranean Habitats for Black Pine (Pinus nigra J.F. Arnold) in Croatia
reforestation succession forest vegetation pine plantations karst
2023/11/22
This study outlines research performed on experimental plots established in forest plantations and in natural black pine forests. The objective of the study was to determine the habitat factors that h...
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...
New black hole images reveal a glowing, fluffy ring and a high-speed jet（图）
黑洞图像 高速喷气机 等离子体物理学
2023/6/9
In 2017, astronomers captured the first image of a black hole by coordinating radio dishes around the world to act as a single, planet-sized telescope. The synchronized network, known collectively as ...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Notes on black hole images
黑洞 图像 注意事项
2023/4/13
In this talk, I will present the progress of the study on black hole images in our group. The topic is expected to include black hole shadows, images of the accretion disk and jets around a black hole...
When two black holes collide into each other to form a new bigger black hole, they violently roil spacetime around them, sending ripples called gravitational waves outward in all directions. Previous ...
When deep learning models are deployed in the real world, perhaps to detect financial fraud from credit card activity or identify cancer in medical images, they are often able to outperform humans.
Study: Without more data, a black hole’s origins can be “spun” in any direction（图）
黑洞 双星系统 黑洞起源
2023/6/9
Clues to a black hole’s origins can be found in the way it spins. This is especially true for binaries, in which two black holes circle close together before merging. The spin and tilt of the respecti...
Mysteriously bright flash is a black hole jet pointing straight toward Earth, astronomers say（图）
黑洞生长 超大质量黑洞 兹威基瞬态设施 天文观测
2023/6/9
Earlier this year, astronomers were keeping tabs on data from the Zwicky Transient Facility, an all-sky survey based at the Palomar Observatory in California, when they detected an extraordinary flash...
Black hole burps up shredded star（图）
黑洞 恒星残骸 天文学
2023/6/25
In October 2018, a small star was ripped to shreds when it wandered too close to a black hole in a galaxy located 665 million light years away from Earth. Though it may sound thrilling, the event did ...
世界黑帽大会Black Hat USA 2022于8月6日至11日在拉斯维加斯以线上线下混合方式举行。本年度Black Hat USA共有来自GoogleProject Zero、德国亥姆霍兹信息安全中心、360漏洞研究院等知名安全研究机构和哈佛大学、加州大学、美国西北大学、普渡大学等知名高校的101个议题入选。兰州大学开源软件与实时系统教育部工程研究中心网络空间安全研究团队凭借议题“Human ...
An international team of more than 300 scientists from 80 institutions has created the first-ever image of the supermassive black hole at the center of our Milky Way galaxy.