Physical Sciences and Mathematics Commons^™

Defect-Free Nanowelding Of Bilayer Snse Nanoplates, Jing-Rong Ji, John W. D. Villanova, Salvador Barraza-Lopez, Stuart S. P. Parkin, Kai Chang

Physics Faculty Publications and Presentations

Nanowelding is a bottom-up technique to create custom-designed nanostructures and devices beyond the precision of lithographic methods. Here, a new technique is reported based on anisotropic lubricity at the van der Waals interface between monolayer and bilayer SnSe nanoplates and a graphene substrate to achieve precise control of the crystal orientation and the interface during the welding process. As-grown SnSe monolayer and bilayer nanoplates are commensurate with graphene's armchair direction but lack commensuration along graphene's zigzag direction, resulting in a reduced friction along that direction and a rail-like, 1D movement that permits joining nanoplates with high precision. This way, molecular …

An Analysis Of (Hu)Manid Using The Usf Donated Skeletal Collection: Estimating Sex And Ancestry For Edentulous Individuals, Natalie S. Wise

USF Tampa Graduate Theses and Dissertations

The Human Mandible Identification program, (hu)MANid©, enables anthropologists to estimate the sex and ancestry of unidentified skeletal remains from metric and morphoscopic variables from the mandible. The program is suitable for a variety of anthropological contexts, including forensic casework and bioarchaeological or paleoanthropological analyses. The purpose of this research project is to test the accuracy and applicability of the (hu)MANid program on edentulous mandibles. While the authors of (hu)MANid warn against data collection for edentulous mandibles, there are many circumstances in applied forensic casework where the unidentified person is edentulous. Edentulous individuals experience alveolar resorption, which is the loss of …

"Vampire Plastics": An Investigation Of Poly(Olefin Sulfone) Depolymerization And Its Dust Mitigation Abilities, Alexandra Kathryn Kanani Gallion Stapley

Theses and Dissertations

The ubiquity of particulate contamination requires dust mitigation techniques to provide low-scatter surfaces and edges on sensitive optical devices in space. Poly(olefin sulfone)s have been shown to photodegrade with the assistance of a photobase generator when exposed to UV light (254 nm) and heat (120 °C). These polymers may be useful for minimizing dust on optical surfaces for space applications. However, their behavior in vacuum has not been fully characterized. We synthesized poly(2-methyl-1-pentene sulfone) (PMPS) and poly(1-hexene sulfone) (PHS) with and without a photobase generator. We studied the photodegradation (172 nm or 254 nm) of thin films in vacuum. Spectroscopic …

Making Proteomics Accessible: Rokaixplorer For Interactive Analysis Of Phospho-Proteomic Data, Serhan Yılmaz, Filipa Blasco Tavares Pereira Lopes, Daniela Schlatzer, Marzieh Ayati, Mark R. Chance, Mehmet Koyutürk

Computer Science Faculty Publications

We present RokaiXplorer, an intuitive web tool designed to address the scarcity of user-friendly solutions for proteomics and phospho-proteomics data analysis and visualization. RokaiXplorer streamlines data processing, analysis, and visualization through an interactive online interface, making it accessible to researchers without specialized training in proteomics or data science. With its comprehensive suite of modules, RokaiXplorer facilitates phospho-proteomic analysis at the level of phosphosites, proteins, kinases, biological processes, and pathways. The tool offers functionalities such as data normalization, statistical testing, activity inference, pathway enrichment, subgroup analysis, automated report generation, and multiple visualizations, including volcano plots, bar plots, heat maps, and network …

Painting A New Perspective On Ordovician Echinoderm Diversity Patterns, Ohav Barak Harris

USF Tampa Graduate Theses and Dissertations

The Ordovician Period was a time of great biotic and environmental change, encompassing two important biotic events: the Great Ordovician Biodiversification Event (GOBE) and the Late Ordovician Mass Extinction (LOME). The GOBE occurred during the Middle Ordovician and was a period of rapid diversity increase for marine invertebrate groups, as lower-level taxonomic groups like families and genera came into the forefront. The Ordovician ends with the LOME, an extinction event that is thought to have occurred in two phases: an initial glaciation followed by a subsequent warming. Approximately 85% of marine species went extinct during the LOME, making it the …

Indefinitely Flat Circular Velocities And The Baryonic Tully-Fisher Relation From Weak Lensing, Tobias Mistele, Stacy Mcgaugh

Faculty Scholarship

We use a new deprojection formula to infer the gravitational potential around isolated galaxies from weak gravitational lensing. The results imply circular velocity curves that remain flat for hundreds of kiloparsecs, greatly extending the classic result from 21 cm observations. Indeed, there is no clear hint of a decline out to 1 Mpc, well beyond the expected virial radii of dark matter halos. Binning the data by mass reveals a correlation with the flat circular speed that closely agrees with the baryonic Tully-Fisher relation known from kinematic data. These results apply to both early- and late-type galaxies, indicating a common …

The Baryonic Tully-Fisher Relation. I. Wise/Spitzer Photometry, Francis Duey, Stacy Mcgaugh

Faculty Scholarship

We present Wide-field Infrared Survey Explorer (WISE) W1 photometry of the Spitzer Photometry and Accurate Rotation Curves sample. The baseline of near-IR fluxes is established for use by stellar mass models, a key component to the baryonic Tully-Fisher relation and other kinematic galaxies scaling relations. We focus this paper on determination of the characteristics of the W1 fluxes compared to IRAC 3.6 μm fluxes, internal accuracy limitations from photometric techniques, external accuracy by comparison to other work in the literature and the range of W1 to IRAC 3.6 μm colors. We outline the behavior of SDSS g, W1 and IRAC …

Biodiversity Conservation In Western China With Scientific And Technological Support: Current Status, Challenges, And Suggestions, Fuwen Wei, Hang Sun, Jiaojun Zhu, Baoguo Li, Gexia Qiao, Shilong Chen, Jiang Zhu, Xiaoge Ping

Bulletin of Chinese Academy of Sciences (Chinese Version)

As a megadiverse country, China has made significant progress in biodiversity conservation in recent years. The western region is a critical area for biodiversity conservation in China, boasting rich species resources and a high proportion of endemic species. However, its ecosystems are fragile and vulnerable to the impacts of multiple factors like climate change and human activities. Scientific and technological support has played a vital supporting role in biodiversity conservation, providing comprehensive support from monitoring and assessment to restoration and decision-making through biodiversity surveys, scientific research, and the establishment of monitoring networks. Nevertheless, challenges remain, including gaps in taxa and …

Exploration On Path Of Ecological Protection And Economic Development In Qilian Mountain National Park Region, Xinmiao Tian, Qi Feng

Bulletin of Chinese Academy of Sciences (Chinese Version)

National parks are a kind of special protected areas established under the leadership of the government with the core objective of protecting the integrity of natural ecosystems and biodiversity, which emphasizes the balance between human activities and nature protection in order to achieve sustainable coexistence of human being and nature. The construction of a system of nature reserves with national parks as the core is a major breakthrough progress in the institutional framework of China’s ecological civilization, and a key area for promoting the construction of Beautiful China and realizing the modernization of harmonious coexistence of human being and nature. …

Zoige Plateau Wetlands Ecosystem Research Station, Chinese Academy Of Sciences, State Key Laboratory Of Cryospheric Science And Frozen Soil Engineering, Northwest Institute Of Eco-Environment And Resources, Chinese Academy Of Sciences

Bulletin of Chinese Academy of Sciences (Chinese Version)

No abstract provided.

Perspectives On Modifiable Spatiotemporal Unit Problems In Remote Sensing Of Agriculture: Evaluating Rice Production In Vietnam And Tools For Analysis, Brad G. Peter, Joseph P. Messina, Victoria Breeze, Cadi Y. Fung, Abhinav Kapoor, Peilei Fan

Geosciences Faculty Publications and Presentations

Measuring agricultural productivity is a multiscale spatiotemporal problem that requires multiscale solutions. In Vietnam, rice comprises a substantial portion of the cultivated area and is a major export crop that supplies much of the global food system. Understanding the when and where of rice productivity is vital to addressing changes to yields and food security, yet descriptive summarizations will vary depending on the spatial or temporal scale of analysis. This paper explores rice trends across Vietnam over a 19-year period, giving specific attention to modifiable spatiotemporal unit problems by evaluating productivity across multiple time periods and administrative levels. A generalizable …

The Osteological Neutral Pose Of The Neck Of An Apatosaurine Sauropod Based On Virtual And Physical Models, Colin Don Boisvert

Theses and Dissertations

An array of sauropod taxa coexisted in Late Jurassic North America. How so many giant genera coexisted without competing for food is puzzling considering their potential metabolic requirements. One aspect of this question is neck posture, which has been much contested, both in terms of the intrinsic curvature of the neck and the resultant elevation of the head. Neck curvature is characterized by the Osteological Neutral Pose (ONP), wherein the intervertebral joints are in an undeflected state. This pose is crucial to understanding neck posture. The articulated series of presacral vertebrae 2-19 of an exceptionally well-preserved apatosaurine, BYU 18531, are …

Engaging Chemistry Educators Through Virtual Roundtables: How The Covid-19 Pandemic Led To A Community-Wide Initiative, M. Taylor Haynes, Justin M. Pratt, Matthew A. Cranswick, Kyle A. Grice, Chip Nataro, Sarah E. Shaner, Kari Stone, Meghan Porter, Jeffrey R. Raker

Chemistry Department Faculty Articles

Members of the Interactive Online Network of Inorganic Chemists (IONiC) report the development and sustained efforts to provide virtual professional development sessions: Supporting Learning with Interactive Teaching: a Hosted, Engaging Roundtable (SLiThEr). SLiThEr’s emerged from a community need at the start of the COVID-19 pandemic; since then, SLiThEr’s have become a standard event for the IONiC community. SLiThEr’s are real- time virtual community events, after which a recording of the SLiThEr is posted on the IONiC YouTube channel. In this paper, an overview of the structure, format, and emergence of SLiThEr’s is reported, followed by evaluation of SLiThEr offerings, a …

Editorials For Special Topic “Strategic Research On S&T Supporting Construction Of Ecological Barrier In Western China”

Bulletin of Chinese Academy of Sciences (Chinese Version)

No abstract provided.

Exploration Of New Paradigm For Comprehensive Large-Scale Think Tank Research Issues—Strategic Research Practice Of Ecological Barrier Construction In Western China, Jiaofeng Pan, Lu Zhao, Feng Zhang

Bulletin of Chinese Academy of Sciences (Chinese Version)

The ecological environment in western China is relatively fragile. Play leading role of science and technology to promote the construction of ecological barrier in western China, has immeasurable strategic significance for promoting a new pattern of western development, building a Beautiful China, and promoting sustainable development and long-term stability of China. Chinese Academy of Sciences took the initiative to launch the major consulting project of “strategic research on science and technology supporting the construction of ecological barriers in western China”. This is a comprehensive Think Tank research, which has complex cross-domain, cross-regional, and interwoven characteristics. According to the requirements of …

Innovative Pathways And Perspectives For Construction Of Ecological Barriers On Loess Plateau, Zhisheng An, Weijian Zhou, Yansui Liu, Zhao Jin, Yunqiang Wang, Baoyuan Liu, Guobin Liu, Zhouping Shangguan, Yihe Lü, Fei Wang, Wanquan Ta, Wenke Wang, Houyuan Lü, Haibin Wu

Bulletin of Chinese Academy of Sciences (Chinese Version)

The ecological barriers on Loess Plateau are crucial components of ecological security strategy framed as a pattern of “Three Zones and Four Belts” in China, and serve as a vital safeguard to reduce the flooding risks of the Yellow River and the safety of the North China Plain. Since the founding of the People’s Republic of China, the construction of the ecological barriers on the Loess Plateau has already gained some remarkable achievements, nevertheless, there are still some challenges upon us, such as intensified risks of extreme climate events and natural disasters, proper threshold of balance between ecological construction and …

Technological Challenges And Development Directions Of Ecological Security Barrier Construction In Yun-Gui-Chuan-Yu Region, Peng Cui, Yongping Yang, Genxu Wang, Bo Zhu, Xuyang Lu, Geng Sun, Xiaoyong Bai, Sirui Zhang, Yonggang Ge, Jiao Wang

Bulletin of Chinese Academy of Sciences (Chinese Version)

The Yun-Gui-Chuan-Yu Ecological Security Barrier is situated in Southwest China, encompassing the provinces of Sichuan, Chongqing, Guizhou, and Yunnan. It serves as a vital water source conservation area and a core zone for biodiversity protection for the Yangtze, Yellow, and Pearl River basins, playing a crucial role in China’s national ecological security. Since the 18th National Congress of Communist Party of China, under the guidance of Xi Jinping’s Thought on Ecological Civilization, the region has made significant strides in water resource protection, soil erosion and mountain disaster control, biodiversity conservation, and ecosystem restoration, resulting in noticeable improvements in environmental quality …

Science And Technology Support Ecosystem Protection And Restoration In Western China To Ensure Ecological Security Of The Country, Zhiyun Ouyang, Lingqiao Kong, Binbin Huang, Weihua Xu, Bojie Fu

Bulletin of Chinese Academy of Sciences (Chinese Version)

The western China has developed the Earth’s unique ecosystems, which is not only the main provider of ecosystem products and the important barrier of ecological security in China, but also the key area of ecosystem protection and restoration because of its ecological fragility. In recent years, a series of the major protection and restoration projects of ecosystems have been implemented, and have achieved remarkable progress in western China. Nevertheless, due to its ecosystem instability and unsustainability, ecological security is still facing severe challenges in western China. This study first analyzes the crucial roles of the western region as an ecological …

Science And Technology Support For Climate Change Mitigation And Adaptation Over Western China, Huijun Wang, Huopo Chen

Bulletin of Chinese Academy of Sciences (Chinese Version)

In the context of accelerating global warming, the western China has experienced intensified climate extremes, with frequent occurrences of meteorological, hydrological, and ecological disasters. The unpredictability of these events has increased, posing significant challenges to disaster prevention and mitigation as well as sustainable development in these areas. In this context, this study, based on a scientific assessment of the facts and risks of climate change in the western China, has identified several fundamental, critical, and strategic scientific and technological tasks to support the development of the western China in the field of climate change. Corresponding suggestions and measures are also …

Strategic Analysis Of Technological Support For Environmental Pollution Prevention And Control In China’S Western Ecological Barrier Region, Yawei Wang, Juan Li, Guibin Jiang

Bulletin of Chinese Academy of Sciences (Chinese Version)

As a crucial pillar of the national ecological security strategic framework, the Western Ecological Barrier Zone demonstrates irreplaceable ecological value in key areas such as water conservation, climate regulation, and carbon sink balance, leveraging its unique geographical endowments and ecosystem services. The governance effectiveness of this region not only directly impacts the advancement of the Beautiful China initiative but also holds significant implications for the comprehensive realization of the Dual Carbon strategic goals. This study focuses on the critical issue of environmental pollution prevention in western China. By elucidating the regional distinctive geographical and climatic characteristics, the study systematically analyzes …

Scientific And Technological Measures To Support Sustainability Of Water Resources In Western China, Jun Xia, Xi Chen, Qiuhong Tang, Hongwei Lu, Shaofeng Jia, Genxu Wang, Jingjie Yu, Jinzhu Ma, Xingcai Liu

Bulletin of Chinese Academy of Sciences (Chinese Version)

Under the combined impacts of climate change and human activities, the ecological barrier regions of western China exhibit significant reductions in solid water storage, increases in liquid water, declining water resource stability and non-steady-state characteristics in hydrological systems. Water allocation risks have increased, making it exponentially more difficult to ensure water security. Transboundary water resource development can lead to spillover risks, requiring urgent research on sustainable water resource use and adaptation strategies. The water cycle in western China is driven by both natural and anthropogenic factors, yet fundamental research on water cycle dynamics and resource management under changing environments remains …

Large-Scale Research Infrastructure Empowers High-Quality Development Of Private Enterprises: Current Situation, Challenges, And Policy Recommendations, Lingling Zhang, Fuqiang Wang, Mingze Zhang, Zexia Li

Bulletin of Chinese Academy of Sciences (Chinese Version)

Private enterprises have become an important source of innovation in China’s economic development. Large-scale research infrastructure, as a crucial strategic support and innovation element for breaking through key technologies, provides a platform for the innovative development of private enterprises. At present, some large-scale research infrastructures in China, such as the China Spallation Neutron Source and the Shanghai Synchrotron Radiation Facility, have begun actively exploring mechanisms to serve private enterprises. These efforts have helped a number of private companies overcome critical technological bottlenecks and achieve original innovations. Nevertheless, in the current process of opening up large-scale research infrastructures to private enterprises …

Context-Driven: Logic And Pathway Of Industrial Intelligence To Accelerate Development Of New Quality Productive Forces, Ximing Yin, Yaxin Su, Tailun Chen, Jin Chen, Jiang Yu

Bulletin of Chinese Academy of Sciences (Chinese Version)

The development of new productive forces hinges on industrial intelligence, which is driven by the deep integration of technological innovation and industrial innovation, and the accelerated construction of a modern industrial system. Industrial intelligence refers to the process of transforming traditional industrial development models and cultivating new pillar industries through the empowerment of intelligent technologies and data elements. It serves as a pivotal engine for promoting new industrialization and developing new productive forces. However, existing research has largely overlooked the critical theoretical and practical issues of how to leverage China’s ultra-large market and its vast contextual advantages to improve the …

Towards 5th World Congress Of Biosphere Reserves: Opportunities And Recommended Actions For China, Yijie Xian, Qiang Fang, Ning Liu, Xiangjun Chen, Yan Zhuang, Ding Wang, Qunli Han

Bulletin of Chinese Academy of Sciences (Chinese Version)

The holding of important international conferences in science and technology can generally bring multiple benefits for the host countries, such as developing strategy in the area of international cooperation. One example comes from the 5th World Congress of Biosphere Reserves due to be held in Hangzhou, China from September 22–27, 2025. This study summarizes the history of previous congresses and the system of Man and the Biosphere Programme (MAB) in which the congresses are located. Significance of the 5th Congress can be found as increasing the global engagement and international influence of MAB, and advancing the achievement of the United …

Ecological Governance Zoning In Phase Vi Planning Area Of “Three-North” Project, Chunlei Xiao, Boxuan Shang, Qi Lu, Guipeng Cui, Chunyu Song, Xiaosong Li

Bulletin of Chinese Academy of Sciences (Chinese Version)

The “Three-North” region is distinguished by its extensive expanse, heterogeneous natural conditions, diverse ecosystems, and marked disparities in the intensity of human activities. Effective ecological governance in this area necessitates scientific planning, tailored adaptation to local contexts, and precise policy implementation. The three key initiatives of Phase Six of the “Three-North” project have identified critical areas for engineering-based governance. To achieve comprehensive and scientifically sound governance, it is essential to conduct ecological zoning. This study has systematically delineated and classified terrestrial ecological regions based on the integrity of natural geographical units, the similarity of dominant ecosystems, the spatial heterogeneity of …

Enhancing Integrated Observation Network Of Multi-Spherical Interaction In Zoige Wetland And Source Area Of Yellow River Supports Protection Of Yellow River Water Tower, Xianhong Meng, Lunyu Shang, Zhaoguo Li, Shaoying Wang, Lele Shu, Hao Chen, Lin Zhao, Peixi Su, Yu Zhang, Shihua Lyu

Bulletin of Chinese Academy of Sciences (Chinese Version)

An integrated observation network for the energy-water-carbon cycle, with the Zoige wetland and grassland as the focus and covering the source area of the Yellow River (YRSR), has been established, which systematically revealed the characteristics of ecosystem evolution and carbon cycle in grassland and wetland ecosystems of the Zoige Plateau from the leaf-community-ecosystem-regional scales and its response mechanism to climate change, and accordingly, the ecological monitoring and restoration techniques for different types of degraded grassland based on the degradation of the alpine grass mattic epipedon were established, which significantly reduced the cost and enhanced the sustainability of the ecological management. …

Do You Say Please Or Thank You To Chatgpt? The Subtle Influence Of Prompt Engineering On Digital Civility, Essraa Nawar

Library Articles and Research

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In the dynamic and rapidly evolving landscape of artificial intelligence, tools like ChatGPT have become integral to our daily digital interactions. These advanced AI systems assist us with a myriad of tasks, from generating text and answering complex questions to providing creative solutions. However, as we engage more frequently with these non-human entities, an intriguing question arises: Are we inadvertently becoming ruder in our digital communications, or are we consciously maintaining our ingrained habits of politeness?"

Digital Technologies Empower Innovative Development Governance Of The Yellow River Basin, Tara Qian Sun, Yingying Jia, Gaozuo Sun, Xixi Zhao, Rongping Mu

Bulletin of Chinese Academy of Sciences (Chinese Version)

The application of digital technologies is the core driving force for innovating traditional development and realizing a leap in productivity. The innovative development governance of the Yellow River Basin is a complex social system, involving economic, social, and ecological aspects. Its key driving force is the profound influence of digital technologies. Focused on how digital technologies empower the innovative development governance of the Yellow River Basin, the development process, problems, and challenges are analyzed at different stages, from the digital Yellow River to the digital twin Yellow River. It is found that the governance of the Yellow River Basin still …

Study On Data Mining Of Hydrogen Energy Policy In China Based On Natural Language Processing Technology, Dongling Huang, Yuan Liu, Xiaoshuai Yuan, Guozhong Jin, Yuanhang Cai, Li Liu, Heng Cao, Wanjun Li, Rui Cai

Bulletin of Chinese Academy of Sciences (Chinese Version)

Report to the 20th National Congress of the CPC emphasized the importance of “working actively and prudently towards the goals of reaching peak carbon emissions and carbon neutrality”, as well as “speeding up the planning and development of a system for new energy sources”. As a green and low-carbon secondary energy source, hydrogen energy has multiple applications in promoting the large-scale and efficient use of renewable energy as well as energy substitution in the field of transportation. It can also accelerate decarbonization in industry, and as such, is an indispensable part of building a new energy system, reaching peak carbon …

Comparative Analysis And Insights Into R&D Mode Of Top Artificial Intelligence Companies In China And The Us, Xiyi Yang, Jia Jia, Xiaoyu Zhou, Shouyang Wang

Bulletin of Chinese Academy of Sciences (Chinese Version)

Artificial intelligence (AI) is currently one of the most prominent fields in the technology industry, with China and the US being two global centers for AI research and development. However, the two countries differ in their development levels of the AI industry. In particular, the emergence of ChatGPT in 2022 has sparked extensive discussions regarding the capabilities and competitiveness of Chinese AI companies. This study analyzes over 120 000 AI invention patents approved in the past five years in both China and the US. Firstly, it constructs a multidimensional index based on AI patent features to identify the top 10 …