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JOURNAL ARTICLE
Ren Xu, Fei Lin, Wenyi Shao, Haoran Wang, Fanping Meng, Jun Li
Surrounded by the Shandong Peninsula, the Bohai Sea and Yellow Sea possess vast marine energy resources. An analysis of actual meteorological data from these regions indicates significant seasonality and intra-day uncertainty in wind and photovoltaic power generation. The challenge of scheduling to leverage the complementary characteristics of various renewable energy sources for maintaining grid stability is substantial. In response, we have integrated wave energy with offshore photovoltaic and wind power generation and propose a day-ahead and intra-day multi-time-scale rolling optimization scheduling strategy for the complementary dispatch of these three energy sources...
April 14, 2024: Entropy
#42
JOURNAL ARTICLE
Peter H Yoon, Rodrigo A López, Chadi S Salem, John W Bonnell, Sunjung Kim
The quiet-time solar wind electrons feature non-thermal characteristics when viewed from the perspective of their velocity distribution functions. They typically have an appearance of being composed of a denser thermal "core" population plus a tenuous energetic "halo" population. At first, such a feature was empirically fitted with the kappa velocity space distribution function, but ever since the ground-breaking work by Tsallis, the space physics community has embraced the potential implication of the kappa distribution as reflecting the non-extensive nature of the space plasma...
March 30, 2024: Entropy
#43
JOURNAL ARTICLE
Han Peng, Defang Zhao, Linjian Shangguan, Songyin Li, Ruixue Cheng, Yanchi Li
The gel-state grease plays a vital and indispensable role in the long-term operation of wind turbines. To reduce carbon emissions and increase the reliability of wind turbines, this paper takes the gel-state Mobil SHC 461WT grease as the study object. Firstly, the rheological properties of the gel-state Mobil SHC 461WT grease were investigated using the Anton Paar MCR302 rotational rheometer. Secondly, the rheological characteristics of three different gel states of the Mobil SHC 461WT grease (additive content of 0...
April 9, 2024: Gels
#44
JOURNAL ARTICLE
Pratap Sriram Sundar, Chandan Chowdhury, Sagar Kamarthi
Pollination is a crucial ecological process with far-reaching impacts on natural and agricultural systems. Approximately 85% of flowering plants depend on animal pollinators for successful reproduction. Over 75% of global food crops rely on pollinators, making them indispensable for sustaining human populations. Wind, water, insects, birds, bats, mammals, amphibians, and mollusks accomplish the pollination process. The design features of flowers and pollinators in angiosperms make the pollination process functionally effective and efficient...
April 15, 2024: Biomimetics
#45
REVIEW
Rahul Kumar, Mansoureh Rezapourian, Ramin Rahmani, Himanshu S Maurya, Nikhil Kamboj, Irina Hussainova
Friction, wear, and the consequent energy dissipation pose significant challenges in systems with moving components, spanning various domains, including nanoelectromechanical systems (NEMS/MEMS) and bio-MEMS (microrobots), hip prostheses (biomaterials), offshore wind and hydro turbines, space vehicles, solar mirrors for photovoltaics, triboelectric generators, etc. Nature-inspired bionic surfaces offer valuable examples of effective texturing strategies, encompassing various geometric and topological approaches tailored to mitigate frictional effects and related functionalities in various scenarios...
March 30, 2024: Biomimetics
#46
JOURNAL ARTICLE
Magnar Bjørgve, Christian Tantardini, Stig Rune Jensen, Gabriel A Gerez S, Peter Wind, Roberto Di Remigio Eikås, Evgueni Dinvay, Luca Frediani
Wavelets and multiwavelets have lately been adopted in quantum chemistry to overcome challenges presented by the two main families of basis sets: Gaussian atomic orbitals and plane waves. In addition to their numerical advantages (high precision, locality, fast algorithms for operator application, linear scaling with respect to system size, to mention a few), they provide a framework that narrows the gap between the theoretical formalism of the fundamental equations and the practical implementation in a working code...
April 28, 2024: Journal of Chemical Physics
#47
RANDOMIZED CONTROLLED TRIAL
Sigurd Mydske, Guttorm Brattebø, Øyvind Østerås, Øystein Wiggen, Jörg Assmus, Øyvind Thomassen
BACKGROUND: Use of a vapor barrier in the prehospital care of cold-stressed or hypothermic patients aims to reduce evaporative heat loss and accelerate rewarming. The application of a vapor barrier is recommended in various guidelines, along with both insulating and wind/waterproof layers and an active external rewarming device; however, evidence of its effect is limited. This study aimed to investigate the effect of using a vapor barrier as the inner layer in the recommended "burrito" model for wrapping hypothermic patients in the field...
April 25, 2024: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine
#48
JOURNAL ARTICLE
Florian Achermann, Thomas Stastny, Bogdan Danciu, Andrey Kolobov, Jen Jen Chung, Roland Siegwart, Nicholas Lawrance
Real-time high-resolution wind predictions are beneficial for various applications including safe crewed and uncrewed aviation. Current weather models require too much compute and lack the necessary predictive capabilities as they are valid only at the scale of multiple kilometers and hours - much lower spatial and temporal resolutions than these applications require. Our work demonstrates the ability to predict low-altitude time-averaged wind fields in real time on limited-compute devices, from only sparse measurement data...
April 25, 2024: Nature Communications
#49
JOURNAL ARTICLE
Jin-Kyung Hong, Yongjoo Choi, Seokhyun Ahn, Jeonghwan Kim, Dong Jin Yang, Jongwon Heo, Jae-Chang Cho, Tae Kwon Lee
This study explored the assembly mechanisms and physicochemical dynamics of microbial communities within atmospheric bioaerosols, focusing on the influence of different aerial trajectories. Over two years, samples near Seoul were classified into 'North', 'Southwest', and 'Others' categories based on their aerial trajectories. Physicochemical analysis of the PM2.5 particles revealed distinct ion compositions for each cluster, reflecting diverse environmental influences. Microbial community analysis revealed that shared dominant bacterial phyla were present in all clusters...
April 23, 2024: Science of the Total Environment
#50
JOURNAL ARTICLE
Chih-Yuan Chang, Jia-Lin Wang, Yen-Chen Chen, Wei-Nai Chen, Sheng-Hsiang Wang, Chuang Ming-Tung, Neng-Huei Lin, Charles C-K Chou, Wei-Syun Huang, Li-Jin Ke, Xiang-Xu Pan, Yu-Jui Ho, Yi-Ying Chen, Chih-Chung Chang
East Asian continental outflows with PM2.5 , O3 , and other species may determine the baseline conditions and affect the air quality in downwind areas via long-range transport (LRT). To gain insight into the impact and spatiotemporal characteristics of airborne pollutants in East Asian continental outflows, a versatile multicopter drone sounding platform was used to simultaneously observe PM2.5 , O3 , CO2 , and meteorological variables (temperature, specific humidity, pressure, and wind vector) above the northern tip of Taiwan, Cape Fuiguei, which often encounters continental outflows during winter monsoon periods...
April 23, 2024: Science of the Total Environment
#51
REVIEW
Sharon A Robinson, Laura E Revell, Roy Mackenzie, Rachele Ossola
Stratospheric ozone, which has been depleted in recent decades by the release of anthropogenic gases, is critical for shielding the biosphere against ultraviolet-B (UV-B) radiation. Although the ozone layer is expected to recover before the end of the 21st century, a hole over Antarctica continues to appear each year. Ozone depletion usually peaks between September and October, when fortunately, most Antarctic terrestrial vegetation and soil biota is frozen, dormant and protected under snow cover. Similarly, much marine life is protected by sea ice cover...
April 2024: Global Change Biology
#52
REVIEW
Yuanjun Zhang, Hwee San Lim, Chengyu Hu, Rui Zhang
Forest fires are sudden, destructive, hazardous, and challenging to manage and rescue, earning them a place on UNESCO's list of the world's eight major natural disasters. Currently, amid global warming, all countries worldwide have entered a period of high forest fire incidence. Due to global warming, the frequency of forest fires has accelerated, the likelihood of large fires has increased, and the spatial and temporal dynamics of forest fires have shown different trends. Therefore, the impact of climate change on the spatiotemporal dynamics of forest fires has become a hot issue in the field of forest fire research in recent years...
April 25, 2024: Environmental Science and Pollution Research International
#53
JOURNAL ARTICLE
Surveying the Directional Transport of Water Droplets upon Impact on Metallic Topographic Gradients.
Kirill Misiiuk, Geoff R Willmott, Richard J Blaikie, Andrew D Sommers, Santhosh Kumar Pandian, Sam Lowrey
Drop impact phenomena on raw, polished, and topography-altered gradient surfaces are investigated and presented. The main aim of this study is to demonstrate that in using a one-step industrial patterning process, it is possible to obtain metal topographical wetting gradients that can produce various desired outcomes after droplet impact. The findings could be applied to improving wind or steam turbine blades. The ranges of Weber (We) and Reynolds (Re) numbers in the study are 3-300 and 650-6500, respectively...
April 25, 2024: ACS Applied Materials & Interfaces
#54
JOURNAL ARTICLE
Shanjun Huang, Hao Wang, Zhuo Li, Zhaohan Wang, Tian Ma, Ruifang Song, Menghan Lu, Xin Han, Yiting Zhang, Yingtong Wang, Qing Zhen, Tiejun Shui
BACKGROUND: The impact of climate on zoonotic infectious diseases (or can be referred to as climate-sensitive zoonotic diseases) is confirmed. Yet, research on the association between brucellosis and climate is limited. We aim to understand the impact of meteorological factors on the risk of brucellosis, especially in northeastern China. METHODS: Monthly incidence data for brucellosis from 2005 to 2019 in Jilin province was obtained from the China Information System for Disease Control and Prevention (CDC)...
April 30, 2024: Heliyon
#55
JOURNAL ARTICLE
Mehmood Ali Khan, Iftikhar Ahmed Khan, Sajid Shah, Mohammed El-Affendi, Waqas Jadoon
BACKGROUND: Computational intelligence (CI) based prediction models increase the efficient and effective utilization of resources for wind prediction. However, the traditional recurrent neural networks (RNN) are difficult to train on data having long-term temporal dependencies, thus susceptible to an inherent problem of vanishing gradient. This work proposed a method based on an advanced version of RNN known as long short-term memory (LSTM) architecture, which updates recurrent weights to overcome the vanishing gradient problem...
2024: PeerJ. Computer Science
#56
JOURNAL ARTICLE
Trevor A Bowen, Stuart D Bale, Benjamin D G Chandran, Alexandros Chasapis, Christopher H K Chen, Thierry Dudok de Wit, Alfred Mallet, Romain Meyrand, Jonathan Squire
The dissipation of turbulence in astrophysical systems is fundamental to energy transfer and heating in environments ranging from the solar wind and corona to accretion disks and the intracluster medium. Although turbulent dissipation is relatively well understood in fluid dynamics, astrophysical plasmas often exhibit exotic behaviour, arising from the lack of interparticle collisions, which complicates turbulent dissipation and heating in these systems. Recent observations by NASA's Parker Solar Probe mission in the inner heliosphere have shed new light on the role of ion cyclotron resonance as a potential candidate for turbulent dissipation and plasma heating...
2024: Nature Astronomy
#57
JOURNAL ARTICLE
Lingzhi 灵芝 Wang王, Maokai Hu, Lifan Wang, Yi 轶 Yang 杨, Jiawen Yang, Haley Gomez, Sijie Chen, Lei Hu, Ting-Wan Chen, Jun Mo, Xiaofeng Wang, Dietrich Baade, Peter Hoeflich, J Craig Wheeler, Giuliano Pignata, Jamison Burke, Daichi Hiramatsu, D Andrew Howell, Curtis McCully, Craig Pellegrino, Lluís Galbany, Eric Y Hsiao, David J Sand, Jujia Zhang, Syed A Uddin, J P Anderson, Chris Ashall, Cheng Cheng, Mariusz Gromadzki, Cosimo Inserra, Han Lin, N Morrell, Antonia Morales-Garoffolo, T E Müller-Bravo, Matt Nicholl, Estefania Padilla Gonzalez, M M Phillips, J Pineda-García, Hanna Sai, Mathew Smith, M Shahbandeh, Shubham Srivastav, M D Stritzinger, Sheng Yang, D R Young, Lixin Yu, Xinghan Zhang
Dust associated with various stellar sources in galaxies at all cosmic epochs remains a controversial topic, particularly whether supernovae play an important role in dust production. We report evidence of dust formation in the cold, dense shell behind the ejecta-circumstellar medium (CSM) interaction in the Type Ia-CSM supernova (SN) 2018evt three years after the explosion, characterized by a rise in mid-infrared emission accompanied by an accelerated decline in the optical radiation of the SN. Such a dust-formation picture is also corroborated by the concurrent evolution of the profiles of the Hα emission line...
2024: Nature Astronomy
#58
JOURNAL ARTICLE
Chenhao Lu, Haibo Jiang, Xiangran Cheng, Jiqing He, Yao Long, Yingfan Chang, Xiaocheng Gong, Kun Zhang, Jiaxin Li, Zhengfeng Zhu, Jingxia Wu, Jiajia Wang, Yuanyuan Zheng, Xiang Shi, Lei Ye, Meng Liao, Xuemei Sun, Bingjie Wang, Peining Chen, Yonggang Wang, Huisheng Peng
Replacement of liquid electrolytes with polymer gel electrolytes is recognized as a general and effective way of solving safety problems and achieving high flexibility in wearable batteries1-6 . However, the poor interface between polymer gel electrolyte and electrode, caused by insufficient wetting, produces much poorer electrochemical properties, especially during the deformation of the battery7-9 . Here we report a strategy for designing channel structures in electrodes to incorporate polymer gel electrolytes and to form intimate and stable interfaces for high-performance wearable batteries...
April 24, 2024: Nature
#59
JOURNAL ARTICLE
Amil Daraz, Hasan Alrajhi, Abdul Basit, Abdul Rahman Afzal, Ahmed N M Alahmadi, Irfan Ahmed Khan
Maintaining a power balance between generation and demand is generally acknowledged as being essential to maintaining a system frequency within reasonable bounds. This is especially important for linked renewable-based hybrid power systems (HPS), where disruptions are more likely to occur. This paper suggests a prominent modified "Fractional order-proportional-integral with double derivative (FOPIDD2) controller" as an innovative HPS controller in order to navigate these obstacles. The recommended control approach has been validated in power systems including wind, reheat thermal, solar, and hydro generating, as well as capacitive energy storage and electric vehicle...
April 24, 2024: Scientific Reports
#60
JOURNAL ARTICLE
Nathan Sparks, Ralf Toumi
Assessing tropical cyclone risk on a global scale given the infrequency of landfalling tropical cyclones (TC) and the short period of reliable observations remains a challenge. Synthetic tropical cyclone datasets can help overcome these problems. Here we present a new global dataset created by IRIS, the ImpeRIal college Storm model. IRIS is novel because, unlike other synthetic TC models, it only simulates the decay from the point of lifetime maximum intensity. This minimises the bias in the dataset. It takes input from 42 years of observed tropical cyclones and creates a 10,000 year synthetic dataset of wind speed which is then validated against the observations...
April 24, 2024: Scientific Data
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