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Articles 22171 - 22200 of 302422
Full-Text Articles in Physical Sciences and Mathematics
Mgrre_Thinsections_Mgrre-13r_22, Mgrre
Mgrre_Thinsections_Mgrre-14r_3, Mgrre
Mgrre_Thinsections_Mgrre-14r_8, Mgrre
Mesoptroph, A Database Of Trophic Parameters To Study Interactions In Mesopelagic Food Webs, Mónica A. Silva, Catarina T. Fonseca, M. Pilar Olivar, Ainhoa Bernal, Jérôme Spitz, Tiphaine Chouvelon, Sigrún Jonasdottir, Ana Colaço, Vanda Carmo, Tracey Sutton, Gui Menezes, Tone Falkenhaug, Odd Aksel Bergstad, Sergi Pérez-Jorge
Mesoptroph, A Database Of Trophic Parameters To Study Interactions In Mesopelagic Food Webs, Mónica A. Silva, Catarina T. Fonseca, M. Pilar Olivar, Ainhoa Bernal, Jérôme Spitz, Tiphaine Chouvelon, Sigrún Jonasdottir, Ana Colaço, Vanda Carmo, Tracey Sutton, Gui Menezes, Tone Falkenhaug, Odd Aksel Bergstad, Sergi Pérez-Jorge
Marine & Environmental Sciences Faculty Articles
Mesopelagic organisms play a crucial role in marine food webs, channelling energy across the predator-prey network and connecting depth strata through their diel vertical migrations. The information available to assess mesopelagic feeding interactions and energy transfer has increased substantially in recent years, owing to the growing interest and research activity in the mesopelagic realm. However, such data have not been systematically collated and are difficult to access, hampering estimation of the contribution of mesopelagic organisms to marine ecosystems. Here we present MesopTroph, a georeferenced database of diet, trophic markers, and energy content of mesopelagic and other marine taxa compiled from …
Velocity Map Images Of Desorbing Oxygen From Sub-Surface States Of Rh(111), Arved C. Dorst, Friedrich Güthoff, Daniel Schauermann, Alec M. Wodtke, Daniel Killelea, Tim Schäfer
Velocity Map Images Of Desorbing Oxygen From Sub-Surface States Of Rh(111), Arved C. Dorst, Friedrich Güthoff, Daniel Schauermann, Alec M. Wodtke, Daniel Killelea, Tim Schäfer
Chemistry: Faculty Publications and Other Works
We combine velocity map imaging (VMI) with temperature-programmed desorption (TPD) experiments to record the angular-resolved velocity distributions of recombinatively-desorbing oxygen from Rh(111). We assign the velocity distributions to desorption from specific surface and sub-surface states by matching the recorded distributions to the desorption temperature. These results provide insight into the recombinative desorption mechanisms and the availability of oxygen for surface-catalyzed reactions.
Response Of Planetary Waves And Tides To The 2019 Southern Hemisphere Ssw And Q2dw Enhancement In Jan-Feb 2020 Observed By Condor Meteor Radar In Chile And Adelaide Meteor Radar In Australia, Alan Liu, Zishun Qiao, Iain Reid, Javier Fuentes, Chris Adami
Response Of Planetary Waves And Tides To The 2019 Southern Hemisphere Ssw And Q2dw Enhancement In Jan-Feb 2020 Observed By Condor Meteor Radar In Chile And Adelaide Meteor Radar In Australia, Alan Liu, Zishun Qiao, Iain Reid, Javier Fuentes, Chris Adami
Publications
A new multi-static meteor radar (CONDOR) has recently been installed in northern Chile. This CONDOR meteor radar (30.3°S, 70.7°W) and the Adelaide meteor radar (35°S, 138°E) have provided longitudinally spaced observations of the mean winds, tides and planetary waves of the PW-tides interaction cases we present here. We have observed a Quasi-6-Day Wave (Q6DW) enhancement in MLT winds at the middle latitudes (30.3°S, 35°S) during the unusual minor South Hemisphere SSW 2019 by the ground-based meteor radars. Tidal analysis also indicates modulation of the Q6DW w/ amplitude ~15 [m/s] and diurnal tides w/ amplitude ~60 [m/s]. Another case we present …
How To Train Vision Transformer On Small-Scale Datasets?, Hanan Gani, Muzammal Naseer, Mohammad Yaqub
How To Train Vision Transformer On Small-Scale Datasets?, Hanan Gani, Muzammal Naseer, Mohammad Yaqub
Computer Vision Faculty Publications
Vision Transformer (ViT), a radically different architecture than convolutional neural networks offers multiple advantages including design simplicity, robustness and state-of-the-art performance on many vision tasks. However, in contrast to convolutional neural networks, Vision Transformer lacks inherent inductive biases. Therefore, successful training of such models is mainly attributed to pre-training on large-scale datasets such as ImageNet with 1.2M or JFT with 300M images. This hinders the direct adaption of Vision Transformer for small-scale datasets. In this work, we show that self-supervised inductive biases can be learned directly from small-scale datasets and serve as an effective weight initialization scheme for fine-tuning. This …
Characteristics Of Kelvin-Helmholtz Waves As Observed By The Mms From September 2015 To June 2017, Katariina Nykyri, Xuanye Ma, Rachel C. Rice
Characteristics Of Kelvin-Helmholtz Waves As Observed By The Mms From September 2015 To June 2017, Katariina Nykyri, Xuanye Ma, Rachel C. Rice
Publications
The Magnetospheric Multiscale (MMS) mission has presented a new opportunity to study the fine scale structures and phenomena of Earth’s magnetosphere, including cross scale processes associated with the Kelvin-Helmholtz Instability (KHI). We present an overview of 19 MMS observations of the KHI from September 2015 to June 2017. Unitless growth rates and unstable solid angles for each of the 19 events were calculated using 5 techniques to automatically detect plasma regions on either side of the magnetopause boundary. There was no apparent correlation between solar wind conditions during the KHI and its growth rate and unstable solid angle, though we …
Synthetic Amphiphiles As Antibiotic Potentiators, Helena Spikes
Synthetic Amphiphiles As Antibiotic Potentiators, Helena Spikes
Dissertations
Antibiotic resistance has become a massive threat to modern medicine. Bacteria acquire resistance either through genetic mutations or mobile genetic elements, such as plasmids. The growing resistance crisis is exacerbated by over-prescription of antibiotics and improper use. As antimicrobial resistance becomes more widespread, superbugs (bacteria resistant to more than one class of drug) have evolved. Since few new drugs reach clinical trials and even fewer are approved by the FDA, we must find a way to make existing drugs more potent. One technique to accomplish this is by using combination therapy. By administering two or more drugs at a time, …
Implementing Just Climate Adaptation Policy: An Analysis Of Recognition, Framing, And Advocacy Coalitions In Boston, U.S.A., Jeffrey T. Malloy, Catherine Ashcraft, Paul Kirshen, Thomas G. Safford, Semra Aytur, Shannon H. Rogers
Implementing Just Climate Adaptation Policy: An Analysis Of Recognition, Framing, And Advocacy Coalitions In Boston, U.S.A., Jeffrey T. Malloy, Catherine Ashcraft, Paul Kirshen, Thomas G. Safford, Semra Aytur, Shannon H. Rogers
Faculty Publications
Cities face intersectional challenges implementing climate adaptation policy. This research contributes to scholarship dedicated to understanding how policy implementation affects socially vulnerable groups, with the overarching goal of promoting justice and equity in climate policy implementation. We apply a novel framework that integrates social justice theory and the advocacy coalition framework to incrementally assess just climate adaptation in Boston, Massachusetts in the United States. Boston made an ambitious commitment to address equity as part of its climate planning and implementation efforts. In this paper, we evaluate the first implementation stage over the period 2016–2019 during which Boston developed coastal resilience …
Sub-Recent Microfauna Within Allogenic Sediments At The Bottom Of A Deep Cave, Njemica (Biokovo Mt., Croatia), Tomislav Kurečić, Valentina Hajek Tadesse, Lara Wacha, Marija Horvat, Nina Trinajstić, Ivan Mišur
Sub-Recent Microfauna Within Allogenic Sediments At The Bottom Of A Deep Cave, Njemica (Biokovo Mt., Croatia), Tomislav Kurečić, Valentina Hajek Tadesse, Lara Wacha, Marija Horvat, Nina Trinajstić, Ivan Mišur
International Journal of Speleology
Clastic sediments deposited at the bottom of the vertical, nearly 1000 m deep Njemica Cave (Biokovo Mountain, Croatia) were analysed. Owing to the vertical morphology of the cave, the occurrences of clastic sediments are sparse. Small, up to decimetre-thick, undisturbed sediment accumulations situated near the siphon lake revealed interesting palaeontological and mineralogical data. These data are used as a useful proxy for discussing depositional processes, the provenance of the sediments and paleo-habitats of the subterranean fauna.
The sub-recent assemblages of ostracods were discovered within the sediment, and they were shown to be correlative to the known endemic species in the …
Mgrre_Thinsections_05_A_92, Mgrre
Are We Ovary-Acting? All Visuospatial Abilities May Not Be Equally Affected Throughout The Menstrual Cycle., Caroline G. Haynes, Audrey N. Wade
Are We Ovary-Acting? All Visuospatial Abilities May Not Be Equally Affected Throughout The Menstrual Cycle., Caroline G. Haynes, Audrey N. Wade
Science University Research Symposium (SURS)
Are we ovary-acting? All visuospatial abilities may not be equally affected throughout the menstrual cycle.
Department of Psychological Sciences & Neuroscience, Belmont University, Nashville, TN
Visuospatial skills pertain to the ability to conceptualize and comprehend visual representations of objects and the spatial relationships among objects. They are integral for the proper functioning of other cognitive systems such as memory, attention, and reasoning (Kaufman, 2007). Sex hormones are one of many factors reported to affect visuospatial processing, with estrogen specially being associated with poor performance on visuospatial tasks in females (Hausmann, 2000). The current study investigated performance differences on three visuospatial …
Strengthening Ecosystem Management Is Helpful For Achieving The Carbon Neutrality Goal, Bojie Fu, Nan Lv, Yihe Lv
Strengthening Ecosystem Management Is Helpful For Achieving The Carbon Neutrality Goal, Bojie Fu, Nan Lv, Yihe Lv
Bulletin of Chinese Academy of Sciences (Chinese Version)
No abstract provided.
Coordinate The Five-Pool Functions Of Ecosystem And Build Strong National Ecological Infrastructures—Ecological Construction Ideology, Tasks And Goals In The New Developing Era Of China, Guirui Yu, Meng Yang, Tianxiang Hao
Coordinate The Five-Pool Functions Of Ecosystem And Build Strong National Ecological Infrastructures—Ecological Construction Ideology, Tasks And Goals In The New Developing Era Of China, Guirui Yu, Meng Yang, Tianxiang Hao
Bulletin of Chinese Academy of Sciences (Chinese Version)
No abstract provided.
Analysis Of Critical Mineral Strategies Of Us And Eu And Their Enlightenment To China
Analysis Of Critical Mineral Strategies Of Us And Eu And Their Enlightenment To China
Bulletin of Chinese Academy of Sciences (Chinese Version)
As the world's major consumers of critical minerals and China's primary competitors, US and the EU have developed comprehensive and systematic critical mineral strategies, which have significant impact on China's resource security. To assist in developing China's critical mineral strategy, by thoroughly examining the critical mineral strategies of US and EU, this study finds their strategic attempts to slow China's development, summarizes their characteristics in the preparation, implementation mechanism, and main strategic measures, and, based on this, proposes suggestions for raising the safety level of China's critical minerals.
Research On Ecological Protection Compensation Mechanism Based On Carbon Sink Value, Lifei Jin, Haidong Zhou, Ruilin Liu
Research On Ecological Protection Compensation Mechanism Based On Carbon Sink Value, Lifei Jin, Haidong Zhou, Ruilin Liu
Bulletin of Chinese Academy of Sciences (Chinese Version)
The establishment of ecological protection compensation mechanism is a critical content and an important institutional guarantee for the construction of ecological civilization. Carbon peak and carbon neutrality have been included in the overall layout of the construction of ecological civilization. The optimization of ecological protection mechanism based on carbon sink value plays a pivotal role in promoting the construction of ecological civilization in China, which is an important means of regulating the fairness of "carbon neutrality" process, and will also promote the transformation of ecological protection compensation policy to refinement. Based on the connotation, attribute and realization path of carbon …
Investigating Small-Group Cognitive Engagement In General Chemistry Learning Activities Using Qualitative Content Analysis And The Icap Framework, Safaa Y. El-Mansy, Jack Barbera, Alissa J. Hartig
Investigating Small-Group Cognitive Engagement In General Chemistry Learning Activities Using Qualitative Content Analysis And The Icap Framework, Safaa Y. El-Mansy, Jack Barbera, Alissa J. Hartig
Chemistry Faculty Publications and Presentations
The level of students’ engagement during active learning activities conducted in small groups is important to understanding the effectiveness of these activities. The Interactive–Constructive–Active–Passive (ICAP) framework is a way to determine the cognitive engagement of these groups by analyzing the conversations that occur while student groups work on an activity. This study used qualitative content analysis and ICAP to investigate cognitive engagement during group activities in a General Chemistry course at the question level, a finer grain size than previously studied. The analysis determined the expected engagement based on question design and the observed engagement based on group conversations. Comparisons …
The Sensitivity Of Meteorological Dynamics To The Variability In Catchment Characteristics, Shimelash Molla Kassaye, Tsegaye Tadesse, Getachew Tegegne, Kindie Engdaw Tadesse
The Sensitivity Of Meteorological Dynamics To The Variability In Catchment Characteristics, Shimelash Molla Kassaye, Tsegaye Tadesse, Getachew Tegegne, Kindie Engdaw Tadesse
Drought Mitigation Center: Faculty Publications
Evaluating meteorological dynamics is a challenging task due to the variability in hydroclimatic settings. This study is designed to assess the sensitivity of precipitation and temperature dynamics to catchment variability. The effects of catchment size, land use/cover change, and elevation differences on precipitation and temperature variability were considered to achieve the study objective. The variability in meteorological parameters to the catchment characteristics was determined using the coefficient of variation on the climate data tool (CDT). A land use/cover change and terrain analysis was performed on Google Earth Engine (GEE) and ArcGIS. In addition, a correlation analysis was performed to identify …
Accurately Grasp The New Features Of Cybersecurity Technology Development And Fully Promote The Modernization Of National Security System And Capabilities, Dengguo Feng
Bulletin of Chinese Academy of Sciences (Chinese Version)
No abstract provided.
Studies On The Development Of China’S Network And Information Security, Jiwu Jing
Studies On The Development Of China’S Network And Information Security, Jiwu Jing
Bulletin of Chinese Academy of Sciences (Chinese Version)
No abstract provided.
Security Of China’S Strategic And Critical Minerals Under Background Of Great Power Competition, Anjian Wang, Xiaojing Yuan
Security Of China’S Strategic And Critical Minerals Under Background Of Great Power Competition, Anjian Wang, Xiaojing Yuan
Bulletin of Chinese Academy of Sciences (Chinese Version)
Strategic and critical minerals are a type of resource that is essential to the country's economic development, indispensable to strategic emerging industries, and closely related to geopolitics. The types of strategic and critical minerals show some laws of spatial-temporal evolution due to the different stages of national economic development, economic structure and global industrial division of labor. Especially since the new century, with the rapid development of strategic emerging industries such as information technology, artificial intelligence and renewable energy, the connotation of strategic critical minerals has been continuously extended and closely connected with the industrial chain, highlighting its important position …
Recycling Of Critical Metals In Green And Low-Carbon Transition: Strategies And Countermeasures, Gang Liu, Litao Liu, Xin Ouyang, Qiance Liu, Xiang Li, Qiang Yan
Recycling Of Critical Metals In Green And Low-Carbon Transition: Strategies And Countermeasures, Gang Liu, Litao Liu, Xin Ouyang, Qiance Liu, Xiang Li, Qiang Yan
Bulletin of Chinese Academy of Sciences (Chinese Version)
As green and low-carbon transition has gained world-wide recognition and become the inherent requirement of fully building a modern socialist China, the consumption of critical metals will increase drastically in the next decades. Meanwhile, this will mean a continually increasing potential of critical metals recycling. Facing changes and pandemic unseen in a century and increasing geopolitical conflicts, it has become a strategic consensus on the national security level for Western countries like the United States and Europe Union to acknowledge and enhance the role of recycling in secure provision of critical metals. Here, in this study, we have discussed the …
Challenges And Security Strategies Of China’S Critical Metals Supply For Carbon Neutrality Pledge, Weiqiang Chen, Peng Wang, Weiqiong Zhong
Challenges And Security Strategies Of China’S Critical Metals Supply For Carbon Neutrality Pledge, Weiqiang Chen, Peng Wang, Weiqiong Zhong
Bulletin of Chinese Academy of Sciences (Chinese Version)
The grand transition to low-carbon energy system is essential to bend the growing carbon emission and further achieve the dual carbon goals. Critical metals such as rare earth elements, lithium, cobalt, nickel, and platinum are widely considered as the material base to support low-carbon technologies. However, given the supply of those metals are scarce and risky, the emerging conflicts between their supply and demand have spurred global attention and competition among countries. This study aims to explore the linkage between critical metals and low-carbon energy systems with a particular focus on the bottlenecks of China's supply chains of those critical …
China’S Rare Earth Supply And Demand Pattern And Balanced Utilization Strategy From Perspective Of Elements, Tao Dai, Tianming Gao, Bojie Wen
China’S Rare Earth Supply And Demand Pattern And Balanced Utilization Strategy From Perspective Of Elements, Tao Dai, Tianming Gao, Bojie Wen
Bulletin of Chinese Academy of Sciences (Chinese Version)
Rare earth is one of the key minerals in the global competition. At present, the global rare earth resources and supply pattern are changing, and Western countries are actively building a supply chain to replace China. This paper describes the evolution of China's rare earth supply and demand pattern from the perspective of elements, analyzes the dislocation of supply and demand of China's rare earth elements and the challenges it faces under the great changes, and puts forward the balanced utilization strategy of rare earth elements, which provides an optimization plan for promoting the globalization of the industrial chain and …
Enlightenment Of Biosphere Reserve To Establishment And Management Of National Park In China, Jinhong Du, Ning Liu, Yijie Xian, Ding Wang, Wei Wang
Enlightenment Of Biosphere Reserve To Establishment And Management Of National Park In China, Jinhong Du, Ning Liu, Yijie Xian, Ding Wang, Wei Wang
Bulletin of Chinese Academy of Sciences (Chinese Version)
China has officially established the first batch of national parks in 2021 and such construction is entering a high-speed stage. National parks of the country basically originate from existed protected areas, and face series of long-standing problems and challenges, such as over simplified administration, low community participation, and prominent contradictions between ecological conservation and social development. The Man and the Biosphere (MAB) Programme is the first flagship project of United Nations Educational, Scientific and Cultural Organization (UNESCO) for biodiversity and cultural diversity conservation, biosphere reserve is its implementation platform, which has accumulated a lot of useful experience in biodiversity conservation, …
Overview Of The Role Of The Party’S Scientific Authority In Implementation Of Convention On International Trade In Endangered Species Of Wild Fauna And Flora, Jiang Zhu, Fuwen Wei
Overview Of The Role Of The Party’S Scientific Authority In Implementation Of Convention On International Trade In Endangered Species Of Wild Fauna And Flora, Jiang Zhu, Fuwen Wei
Bulletin of Chinese Academy of Sciences (Chinese Version)
Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) aims to ensure the survival of endangered wildlife species from the threat of international trade, and is one of the powerful international conventions in the field of wildlife conservation. As an important part of the party's compliance body, scientific authority (SA) is responsible for ensuring the international wildlife trade to meet the requirements of sustainability, legality and traceability. The mandate of SA is involved into many aspects, like starting up the scientific research program for obtaining the basic information on wildlife species, providing the scientific advice for …
Typical Pathway To Carbon Neutrality For Urban Smart Energy Systems—Case Study Of Macao Special Administrative Region, Yonghua Song, Hongcai Zhang, Ge Chen
Typical Pathway To Carbon Neutrality For Urban Smart Energy Systems—Case Study Of Macao Special Administrative Region, Yonghua Song, Hongcai Zhang, Ge Chen
Bulletin of Chinese Academy of Sciences (Chinese Version)
China's ambitious goal "strive to peak carbon emissions before 2030 and achieve carbon neutrality before 2060" not only shows China's responsible attitude towards climate change, but also aligns with the upgrade requirement of China's economy and industries. Since cities occupy a dominant position in China's population, energy consumption, and carbon emissions, they are the main battlefield for achieving national carbon neutrality. This study first analyzes the challenges and requirements that cities' energy systems facing in order to realize carbon neutrality. Then, it takes Macao as an example to analyze the characteristics of cities' energy consumption and carbon emissions. Finally, it …
Mgrre_Thinsections_05_A_91, Mgrre
Response Of Soil Respiration To Changes In Soil Temperature And Water Table Level In Drained And Restored Peatlands Of The Southeastern United States, E. E. Swails, K. Krauss, Marcelo Ardón, A. L. Peralta, A. M. Helton, Jennifer L. Morse, Multiple Additional Authors
Response Of Soil Respiration To Changes In Soil Temperature And Water Table Level In Drained And Restored Peatlands Of The Southeastern United States, E. E. Swails, K. Krauss, Marcelo Ardón, A. L. Peralta, A. M. Helton, Jennifer L. Morse, Multiple Additional Authors
Environmental Science and Management Faculty Publications and Presentations
Background
Extensive drainage of peatlands in the southeastern United States coastal plain for the purposes of agriculture and timber harvesting has led to large releases of soil carbon as carbon dioxide (CO2) due to enhanced peat decomposition. Growth in mechanisms that provide financial incentives for reducing emissions from land use and land-use change could increase funding for hydrological restoration that reduces peat CO2 emissions from these ecosystems. Measuring soil respiration and physical drivers across a range of site characteristics and land use histories is valuable for understanding how CO2 emissions from peat decomposition may respond to raising water table levels. …