Science topics: Cold Temperature
Science topic

Cold Temperature - Science topic

An absence of warmth or heat or a temperature notably below an accustomed norm.
Filters
All publications are displayed by default. Use this filter to view only publications with full-texts.
Publications related to Cold Temperature (10,000)
Sorted by most recent
Article
Full-text available
The 5.2-m-long, 11 T double-aperture Nb3Sn Dipole Magnet was designed to replace some of the standard, 15-m-long 8.3 T Nb–Ti main dipole magnets in the Large Hadron Collider. After the production and test of several of 2-m-long models, the test of full-length 11 T series magnets revealed signs of performance degradation in the coil ends after a seq...
Conference Paper
Full-text available
Accurate real-time weather observations play a vital role in providing accurate weather data. Early weather warnings can only be effective when the number of weather observations is significantly increased to match current weather conditions. At the same time, many gaps in information not only significantly affect the accuracy but also the accuracy...
Article
Full-text available
The usage of recycled alloys in the high pressure die casting (HPDC) applications for automobiles is gaining rapid interest. Even though the skin microstructure, which is typically induced on the casting surface during the HPDC process, is believed to improve the properties of the HPDC castings, it may not always form continuously throughout on the...
Article
Full-text available
We carry out timing and spectral studies of the Be/X-ray binary pulsar GX 304-1 using NuStar and XMM-Newton observations. We construct the long-term spin period evolution of the pulsar which changes from a long-term spin-up (∼1.3×10^(−13) Hz/s) to a long-term spin-down (∼−3.4×10^(−14) Hz/s) trend during a low luminosity state (∼10^(34−35) erg/s). A...
Article
Full-text available
Dust plays a key role in solitary wave propagation in a plasma, giving rise to slow waves and a variety of interesting features dependent on dust mass and charge. To simplify the analysis, based on the Adlam–Allen method, two cases are studied here, those of heavy dust and ion–dust coupling, retaining the dynamics of both. The main result is that r...
Article
Full-text available
Concentric gust fronts are formed when a thunderstorm's downdraft reaches the ground and the outflow from the cold pool spreads uniformly outwards into the surrounding warm and humid air mass. Observational evidence presented here show the case of narrow‐band echoes forming a ring around a thunderstorm. Unlike conventional gust fronts, concentric o...
Article
Full-text available
This study investigates the convective heat transfer characteristics of disk-shaped biomass particles, a critical factor for particle heating and conversion in biomass co-firing boilers that has been underexplored in the literature. Using particle-resolved direct numerical simulation (PR-DNS), we analyze the heat transfer behavior of cold fluid flo...
Article
Full-text available
This project presents the design, fabrication, and performance study of a solar thermoelectric generator. Solar energy is considered one of the most effective types and sources of renewable energy. Among the available options, solar energy has predominantly been harnessed through the use of solar PV panels. However, solar PV panels are quite expens...
Poster
Full-text available
The Balkan History Association is preparing a volume on hybrid war in Eastern and Southeastern Europe. The editors propose that contributors look at lessons to be drawn from the Ukrainian experience, to demonstrate what the potential long-term implications of the Ukrainian crises are when it comes to political stability and security across the Euro...
Article
Full-text available
Plain Language Summary Measuring the temperature of the Moon revealed the widespread presence of “cold spots,” which are features that have distinctly low temperatures during the night, but camouflage with the background during the day. When the BepiColombo spacecraft arrives at Mercury, we will have the first opportunity to observe cold spots on M...
Article
Full-text available
This study aimed to investigate respiration process of Indonesian tropical products and its parameter to support the use of CAS. Shallot, dragon fruit and sneak fruit that are high-value and export-potential products in Indonesia were investigated. For respiration measurement, the fruits were kept in tightly closed jars. The ratio of fruit volume a...
Article
Full-text available
During geomagnetic storms, cold ions from the ionosphere substantially contribute to the plasma sheet population, which may significantly impact magnetotail energy conversion and transport. However, the energization of cold ions in the magnetotail during storm periods remains poorly understood. This paper investigates cold ion energization by secon...
Article
Full-text available
Different types of steel specimens were tested using low cycle torsional fatigue tests to evaluate the torsional behavior. During previous years many authors have developed empirical relationships related to stress amplitude with the life of failure in many types of steel materials. Studies continue to find the best experimental relationships for d...
Article
Full-text available
This work discussed a way of improving smart contract implementation using Ethereumblockchain. This is achieved by the introduction of an improved verification and validation module, together with the Off-blockchain Checker that ensures that cold wallet to cold wallet transaction is checked. The system was modeled using Object-Oriented Analysis and...
Article
Full-text available
Climate change and related events such as temperature increase over time and more frequent extreme weather events constitute a risk to the population and wellbeing. This study contributes to the knowledge on this subject by analyzing changes in mortality in Portugal using the most recent historical and future climate projections from the Coupled Mo...
Article
Full-text available
The serpentine microchannel cold plate is widely used in the liquid cooling of lithium‐ion batteries due to its high space utilization and excellent heat dissipation performance. Adding secondary channels to the serpentine microchannel can improve the cold plate's performance. The traditional parallelogram and herringbone secondary channels do not...
Article
Full-text available
Human cultural complexity did not arise in a vacuum. This study employs agent-based modeling (ABM) and ecological modeling perspectives, combined with reinforcement-learning techniques, to investigate whether conditions that allowed for the lower spoilage of stored food, often associated with colder climates and abundant large fauna, might have ind...
Article
Full-text available
Water conservation in fine roots can be important for the adaptation of trees to cold, nutrient-poor ecosystems. Although pressure–volume (p-v) curve traits are commonly used to assess leaf water conservation, little is known about their intraspecific variation in fine roots and their association with root functional traits, such as morphology and...
Article
Full-text available
Unmanned aerial vehicles (UAVs) have demonstrated immense value in the military sector. This research proposes the use of Trifluoromethane as a novel cold ejection medium. Trifluoromethane, being easily compressible, exhibiting high safety and low infrared characteristics, is well-suited for small-volume high-pressure chambers. The feasibility of T...
Article
Full-text available
An accurate description of microphysical processes is essential for the prediction of severe convective weather. To better understand the microphysical processes of severe convective weather induced by the northeast cold vortex, observed and simulated microphysical characteristics were evaluated for two types of severe convective weather events (a...
Preprint
Full-text available
Hot water freezing faster than cold water is simply startling, and this observation is known as the Mpemba effect since its rediscovery in 1969. But we are still confused and grappling in search of the underlying experimental conditions and the microscopic physics that can confirm , experimentally and theoretically whether this effect is real or mi...
Article
Full-text available
A abordagem adaptativa de conforto térmico apresenta como eixo fundamental a relação (estatística) entre temperatura interna de conforto e clima externo, visto que atua no processo de avaliação de conforto térmico de ambientes naturalmente ventilados. A pesquisa de campo é a chave para o desenvolvimento de uma investigação em conforto térmico por m...
Article
Full-text available
Apis cerana, a native type of honey bee in China, adapts well to the Qinghai–Tibet Plateau (QTP) environments with high altitude, cold, low oxygen, and strong radiation. In this study, we detected 40 morphological characteristics from 100 colonies in 49 regions. We not only evaluated the morphometric characteristics of honey bee populations in the...
Preprint
Full-text available
Recent studies have investigated the role of entanglement in the operation of a two-qubit system as a heat engine, showing that work can be extracted from a single heat bath without direct heat dissipation between the two-qubit system and the cold bath (2021 Phys. Rev. Lett, 126, 120605). In this work, we explore the impact of operating the same tw...
Article
Full-text available
Europe frequently experiences a wide range of extreme events and natural hazards, including heatwaves, extreme precipitation, droughts, cold spells, windstorms, and storm surges. Many of these events do not occur as single extreme events but rather show a multivariate character, known as compound events. We investigate the interactions between extr...
Article
Full-text available
In the production process of electrical steel, with respect to the industrial RH (Ruhrstahl–Heraeus), the steel producers must balance the high-circulation flow rate (operating efficiency) and the frequent cleaning of cold steel in the vacuum chamber due to the splashing of liquid steel (high maintenance costs). Excessive lifting gas flow can induc...
Article
Full-text available
We show that a Universe with a nonminimally coupled scalar field can fit current measurements of the expansion rate of the Universe better than the standard Λ -cold dark matter model or other minimally coupled dark energy models. In particular, the nonminimal coupling in this model allows for the dark energy model to exhibit stable phantom crossing...
Article
Full-text available
Agricultural productions are deeply affected by the phenological changes, especially in Shanxi Province, where Southern Shanxi is the main production area of winter wheat. Studying the phenological changes of this region and clarifying the effects of varieties and sowing dates on the phenological characteristics of southern Shanxi can be used for e...
Article
Full-text available
Internal tides (ITs) in the Indonesian Seas were largely investigated and held responsible for strong water mass transformation and intense surface cooling. Here, we evaluate the ITs' impact on chlorophyll‐a through a coupled INDESO ocean‐biogeochemical model which is compared with in situ data and satellite products. The results show that explicit...
Article
Full-text available
We investigate ion acoustic solitary waves (solitons) of varying amplitudes in a one-dimensional plasma using fully kinetic particle-in-cell simulations. The initial soliton conditions are based on the Korteweg–de Vries (KdV) equation, treating ions as a cold species and electrons with finite temperature. Our findings reveal that KdV solitons evolv...
Article
Full-text available
ABSTRACT Aims: The study investigated the effect of curing methods and the effect of some chemical disinfection solution on the color parameters of the vinyl addition silicon maxillofacial materials. Materials and methods: 30 samples were made from maxillofacial silicon rubber. The samples (20*10*3)mm length, width, and thickness, were divide into...
Article
Full-text available
More than ever before, today’s cities are significantly multi-cultural and heterogeneous. Intrinsically, the modern city centre is the most easily recognisable urban area by both locals and visitors or tourists, due to a concentration of significant functions. In this paper, we discuss the physical and historic centre of Cluj-Napoca, the place that...
Article
Full-text available
The classical Reifenberg’s theorem says that a set which is sufficiently well approximated by planes uniformly at all scales is a topological Hölder manifold. Remarkably, this generalizes to metric spaces, where the approximation by planes is replaced by the Gromov-Hausdorff distance. This fact was shown by Cheeger and Colding (J Differ Geom 46:406...
Article
Full-text available
Understanding regional climate model (RCM) capabilities to simulate current climate informs model development and climate change assessments. This is the first evaluation of the NARCliM2.0 ensemble of seven Weather Forecasting and Research RCMs driven by ECMWF Reanalysis v5 (ERA5) over Australia at 20 km resolution contributing to CORDEX-CMIP6 Aust...
Article
Full-text available
Bitumen is one of the main components in the construction and repair of highways in Kazakhstan, playing a crucial role in binding mineral components in asphalt concrete mixtures to create durable road surfaces. The country's diverse climate - from extreme heat in southern regions to severe cold in northern regions - places significant demands on th...
Article
Full-text available
On 1 November 2024, Storm Lyly set a Finnish record for 10min average wind speeds (33.5ms⁻¹ in Rauma Kylmäpihlaja), marking Finland's first hurricane‐force winds and causing significant damage. The storm featured a strong pressure gradient over the Gulf of Bothnia and, while the low‐pressure centre was distant from the strong winds, there was poten...
Article
Full-text available
This study investigates the fresh state and hardened state mechanical and durability properties of 3D-printed concrete. The mechanical tests focused on its anisotropic behavior in response to different load orientations. Compressive, flexural, and splitting tensile strengths were evaluated relative to the print layers orientation. Results showed th...
Article
Full-text available
This human metapneumovirus pneumonia case, mimicking bacterial pneumonia, exhibited distinct features, including contact with a cold patient and CT findings of multilobar airway‐centric opacities with bronchial wall thickening. Even if point‐of‐care viral testing becomes widely available, recognising cases that warrant such tests remains crucial fo...
Article
Full-text available
We propose a three-flavor nonlocal Nambu–Jona-Lasinio model of quark matter with the scalar attractive, vector repulsive and diquark pairing interaction channels. The model is treated within the separable approximation to obtain the equation of state of cold quark matter. The analysis of the high density asymptotics of the model allows us to conclu...
Article
Full-text available
Recent Cluster satellite observations have illustrated that substorm auroral bead formation and currents are associated with the presence of dispersive scale standing Alfvén waves, which are also known as kinetic scale field line resonances (KFLRs) or kinetic Alfvén eigenmodes. In this work, the properties of these waves are further examined using...
Article
Full-text available
Plain Language Summary Brown carbon plays an important role in influencing regional and global climate change and air quality. However, the lack of understanding of the composition and formation mechanism of BrC chromophores has limited insights into the changes in BrC absorption properties at the molecular level. This study investigated the factor...
Article
Full-text available
This study focuses on the modeling, simulation, and optimization of an integrated biomass gasification and methanation process to produce bio-synthetic natural gas (Bio-SNG) as part of the AIRE project. The process was simulated using Aspen Plus® software, incorporating experimental results from pilot-scale gasification setups. Key steps involved s...
Article
Full-text available
Due to the absence of a cold screen, the performance of uncooled infrared focal plane array imaging is significantly affected by internal radiation caused by optical systems or cavities during long-term operation. Previous nonuniformity correction methods have struggled to effectively eliminate fixed-pattern noise resulting from internal radiation....
Preprint
Full-text available
This review is devoted to summarizing recent developments of the linear sigma model (LSM) in cold and dense two-color QCD (QC$_2$D), in which lattice simulations are straightforwardly applicable thanks to the disappearance of the sign problem. In QC$_2$D, both theoretical and numerical studies derive the presence of the so-called baryon superfluid...
Article
Full-text available
In this study, the Mo/C276 coating was deposited on Q690E steel by high velocity oxy-fuel spraying (HVOF), and the coating was treated with an organosilicon sealer. Further, the corrosion behaviors of the coating in the simulated deep-sea cold spring environment with hydrogen sulfide and high pressure were studied. The results show that when the ox...
Article
Full-text available
The thermal and dynamic behavior of SiO2 nanofluid was studied in a rectangular lid-driven cavity using the finite difference method. A non-adiabatic lid and a hot section at the bottom wall were considered in different heating and cooling cases. Three novel study cases were studied: a standard temperature at Th (heat conduction through the left-si...
Article
Full-text available
Using cold isostatic pressing and atmospheric pressure sintering, Ti-18Al-28Nb-xSn alloys were synthesized by incorporating 0.5 at.%, 1 at.%, 2 at.%, and 4 at.% Sn powder into Ti, Al, and Nb powders. This study investigated the effects of Sn concentration on the microstructure and mechanical properties of Ti2AlNb-based alloys, with a particular foc...
Article
Full-text available
The heat exchange fluctuation theorem (XFT) by Jarzynski and Wójcik (Phys Rev Lett 92:230602, 2004) addresses the setting where two systems with different temperatures are brought in thermal contact at time \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepack...
Article
Full-text available
BACKGROUND: Younger generations are projected to experience more severe climate exposure impacts during their lifetimes than older generations as global warming progresses. Despite the increasing evidence of the recent temporal changes in heat-related mortality risks, there remains a lack of research exploring this association from a cohort perspec...
Article
Full-text available
High Q whispering gallery mode (WGM) optical resonators can achieve a high nonlinear frequency conversion efficiency with quite low input laser intensity. Third harmonic generation (THG) in a WGM resonator requires phase-matching which is conventionally accomplished by careful engineering of the dispersion of the cavity modes. Input laser power-ind...
Article
Full-text available
Overwintering peat fires are re-emerging in snow-covered Arctic-boreal regions, releasing unprecedented levels of carbon into the atmosphere and exacerbating climate change. Despite the critical role of fire-snow interactions in these processes, our understanding remains limited. Herein, we conducted small-scale outdoor experiments (20 × 20 × 20 cm...
Preprint
Full-text available
The Herschel open-time key program Disc Emission via a Bias-free Reconnaissance in the Infrared and Sub-millimeter (DEBRIS) is an unbiased survey of the nearest ~100 stars for each stellar type A-M observed with a uniform photometric sensitivity to search for cold debris disks around them. The analysis of the Photoconductor Array Camera and Spectro...
Preprint
Full-text available
The size distribution of trans-Neptunian objects (TNOs) in the Kuiper Belt provides crucial insights into the formation and evolution of the outer Solar System. Recent observational surveys, including OSSOS++, have revealed that dynamically cold and hot TNO populations exhibit similar size distributions for dimmer objects ($H_r > 5$), which are con...
Article
Full-text available
Dust weather in North China (NC; 34–42° N, 105–120° E) has worsened in recent years, posing adverse impacts on the environment, human health, and the economy. A super dust storm that occurred on 15 March 2021 raised Beijing's PM10 (particulate matter with a diameter less than 10 µm) concentrations above 7000 µg m⁻³, while 2023 witnessed the highest...
Article
Full-text available
Heat sinks dissipate heat from electronic components, and the increase in heat generation owing to technological advancements has prompted researchers to improve heat sink efficiency. The present study aims to improve heat sinks by high‐emissivity nanocoating where the coating is prepared using nanoparticles CuO and MWCNT at a rate of 6% in half a...
Article
Full-text available
Addressing the issue that the Transformer decoder struggles to capture local features for monotonic alignment in speech recognition, and simultaneously incorporating language model cold fusion training into the decoder, an enhanced decoder-based speech recognition model is investigated. The enhanced decoder separates and combines the two attention...
Article
Full-text available
In recent years, the proliferation of options available to users has made it increasingly challenging for individuals to identify and select items that align with their interests. This abundance of information has similarly posed significant difficulties for organizations tasked with extracting meaningful insights and providing relevant recommendat...
Preprint
Full-text available
In this work we investigate the chemical and kinetic nonequilibrium dynamics of the Higgs boson during the primordial Universe QGP (quark-gluon plasma) epoch $130\mathrm{\,GeV}>T>10\mathrm{\,GeV}$. We show that the Higgs bosons is always out of chemical abundance equilibrium with a fugacity $\Upsilon_h = 0.69$ due to virtual decay channels. Additio...
Article
Full-text available
In cold regions, fire pipes are highly susceptible to freezing, which can obstruct water flow and lead to pipe ruptures. Accurately predicting the freeze thickness is crucial to maintaining the functionality of fire protection systems. Traditional methods for predicting fire pipe freezing often rely on simplified models or time-consuming simulation...
Preprint
Full-text available
We perform a detailed investigation of the CCDM (creation of cold dark matter) cosmologies using the powerful techniques of qualitative analysis of dynamical systems. Considering a wide variety of the creation rates ranging from constant to dynamical, we examine the nature of critical points and their stability obtained from the individual scenario...
Article
Full-text available
Bi2O2Se, as the n-type counterpart of p-type BiCuSeO, has garnered considerable attention. The lower carrier concentration leads to reduced electrical conductivity, prompting extensive research efforts aimed at enhancing its electrical performance. This study prepared Bi2−3x(CeTiSn)xO2Se (x = 0, 0.02, 0.03, and 0.04) ceramics using a combination of...