U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Subject "heat" Remove constraint Subject: "heat"
Start Over

Search

127,547  Search Results

« Previous | 1 - 20 of 127,547 |
Number of results to display per page

Search Results

1. A theoretical analysis of bubble-related fouling in ultra heat treatment plants for milk

Author:
Tomas Skoglund
Source:
Journal of food engineering 2023 v.336 pp. 111214
ISSN:
0260-8774
Subject:
heat; heat exchangers; heat treatment,   etc   ; air; dissolved gases; equations; evaporation; milk; solubility; steam; temperature;     Show all 11 Subjects
Abstract:
... A thermodynamically based theoretical analysis of bubble formation on hot heat-exchanger wall surfaces in systems for continuous indirect thermal treatment of milk was performed. Whereas previous research on bubble-related fouling has been experimental with just hypothesis about mechanisms behind the impact of bubble formation on fouling, this research contribute with a novel theoretical anadlysis ...
DOI:
10.1016/j.jfoodeng.2022.111214

2. Energy-saving distillation process for mixed trichlorobenzene based on ORC coupled MVR heat pump technology

Author:
Deming Yang; Dehao Wan; Yi Yun; Shuzhuang Yang
Source:
Energy 2023 v.262 pp. 125565
ISSN:
0360-5442
Subject:
heat; heat pumps,   etc   ; distillation; electricity; energy; energy conservation; vapors;     Show all 7 Subjects
Abstract:
... Trichlorobenzene is a mixture of three isomers which are 1,2,3-trichlorobenzene, 1,2,4-trichlorobenzene and 1,3,5-trichlorobenzene. Due to the boiling points of the three components are close to each other, the adoption of conventional distillation process requires a large amount of energy. To reduce the distillation energy consumption, heat integration technology and mechanical vapor recompressio ...
DOI:
10.1016/j.energy.2022.125565

3. Pepper autophagy related gene CaATG8e differentially regulates plant tolerance to heat and salt stress

Author:
Minmin Liang; Haiyan Li; Kang Yong; Guohong Huang; Yuling Guo; Minghui Lu
Source:
Scientia horticulturae 2023 v.308 pp. 111559
ISSN:
0304-4238
Subject:
heat; heat shock response; heat stress,   etc   ; Arabidopsis; Solanaceae; autophagosomes; autophagy; chlorophyll; computer software; electrolyte leakage; genes; heat tolerance; homeostasis; pepper; phylogeny; protein degradation; salt stress; salt tolerance; viruses;     Show all 19 Subjects
Abstract:
... As a conserved protein degradation system, autophagy plays important roles in removing or degrading misfolded and denatured proteins to maintain the homeostasis in cells. As a core member of autophagy, the involvement of ATG8 in plant tolerance to abiotic stress is paid more attention. In this study, by the SMART online tool, the Atg8 conserved domain was detected in CaATG8e, and by the MEGA11 sof ...
DOI:
10.1016/j.scienta.2022.111559

4. Coupled system model analysis for a small modular reactor cogeneration (combined heat and power) application

Author:
Seong Woo Kang; Man-Sung Yim
Source:
Energy 2023 v.262 pp. 125481
ISSN:
0360-5442
Subject:
heat exchangers; heat transfer,   etc   ; carbon; economic feasibility; energy; fossil fuels; markets; models;     Show all 8 Subjects
Abstract:
... The goal of this research is to develop a flexible, simple, and accurate coupled system model for nuclear combined heat and power cycle (CHP) to investigate various heat-source applications of a small modular reactor (SMR) based on off-design component models. A CHP heat exchanger system model was developed and coupled with the SMR secondary system model for a typical SMR-CHP analysis. The coupled ...
DOI:
10.1016/j.energy.2022.125481

5. Physio-biochemical responses of grafted tomatoes differing in thermotolerance to heat stress and recovery

Author:
Chungkeun Lee; Joshua T. Harvey; Kuan Qin; Daniel I. Leskovar
Source:
Scientia horticulturae 2023 v.308 pp. 111546
ISSN:
0304-4238
Subject:
heat; heat stress; heat tolerance,   etc   ; Solanum lycopersicum; antioxidant enzymes; ascorbate peroxidase; carotenoids; catalase; chlorophyll; cultivars; electrolyte leakage; glutathione-disulfide reductase; heat treatment; leaves; malondialdehyde; peroxidase; proline; rootstocks; superoxide dismutase; tomatoes; vegetative growth;     Show all 21 Subjects
Abstract:
... The aim of this study was to evaluate the physiological and biochemical heat responses of grafted tomato (Solanum lycopersicum L.) seedlings and their changes during the post-stress recovery period. Heat-tolerant ‘Celebrity’ and heat-sensitive ‘Arkansas Traveler’ tomatoes were grafted onto a commercial ‘Maxifort’ rootstock, and transplants were grown in growth chambers for 14 days of heat treatmen ...
DOI:
10.1016/j.scienta.2022.111546

6. Effect of dry heat treatment on multi-structure, physicochemical properties, and in vitro digestibility of potato starch with controlled surface-removed levels

Author:
Qian Zhang; Hao Duan; Yaxi Zhou; Shiqi Zhou; Xiangzhen Ge; Huishan Shen; Wenhao Li; Wenjie Yan
Source:
Food hydrocolloids 2023 v.134 pp. 108062
ISSN:
0268-005X
Subject:
heat; heat treatment,   etc   ; amylases; amylose; enthalpy; gelatinization; hydrocolloids; molecular weight; potato starch; solubility;     Show all 10 Subjects
Abstract:
... To explore the effect of the out-shell structure on dry heat modification efficiency on starch, chemical gelatinization technology was used to deshell the potato starch granules. The controlled shell-separated levels of approximately 10%, 30%, and 50% of the remnant were obtained. Further, starch samples were subjected to dry heat treatment (DHT), and the multi-structural, physicochemical, and dig ...
DOI:
10.1016/j.foodhyd.2022.108062

7. S–CO2 cooling heat transfer mechanism based on pseudo-condensation and turbulent field analysis

Author:
Y.H. Fan; G.H. Tang; Q. Sheng; X.L. Li; D.L. Yang
Source:
Energy 2023 v.262 pp. 125470
ISSN:
0360-5442
Subject:
heat transfer; specific heat,   etc   ; cooling; energy; gravity; liquids; mass transfer; surface tension; viscosity;     Show all 9 Subjects
Abstract:
... The supercritical-CO₂ (S–CO₂) cooler is one of the main components in S–CO₂ power system. This work aims at revealing the cooling mechanism of S–CO₂ under wide working conditions to assist the S–CO₂ cooler design. The pseudo-condensation is proposed with the analogy between supercritical cooling and subcritical condensation. From the pseudo-condensation and the traditional turbulent field analysis ...
DOI:
10.1016/j.energy.2022.125470

8. Stretching induced alignment of graphene nanoplatelets in polyurethane films for superior in-plane thermal conductivity and electromagnetic interference shielding

Author:
Dineshkumar Mani; Minh Canh Vu; Choong-Sun Lim; Jun-Beom Kim; Tae-Hyeong Jeong; Hye Jin Kim; Md Akhtarul Islam; Jung-Hyurk Lim; Kyung-Min Kim; Sung-Ryong Kim
Source:
Carbon 2023 v.201 pp. 568-576
ISSN:
0008-6223
Subject:
heat tolerance; heat transfer,   etc   ; carbon; electromagnetic interference; electron transfer; electronics; nanocomposites; polyurethanes; thermal conductivity;     Show all 9 Subjects
Abstract:
... The rapid innovation of flexible smart electronics has increased the demand for flexible thermally conductive films with the high performance of electromagnetic interference shielding (EMI). This study focuses on graphene nanoplatelets/polyurethane (GnP/PU) films that were fabricated utilizing the solution casting approach. The stretching-induced alignment method was then used to align the GnP she ...
DOI:
10.1016/j.carbon.2022.09.047

9. Thermal stability comparison between 10-catechyl-pyranoanthocyanins and anthocyanins derived from pelargonidin, cyanidin, and malvidin

Author:
Danielle M. Voss; Gonzalo Miyagusuku-Cruzado; M. Monica Giusti
Source:
Food chemistry 2023 v.403 pp. 134305
ISSN:
0308-8146
Subject:
heat; heat stability,   etc   ; absorbance; anthocyanins; caffeic acid; color; cyanidin; food chemistry; malvidin; pH; pelargonidin;     Show all 11 Subjects
Abstract:
... 10-Catechyl-pyranoanthocyanins are pigments derived from nature formed by reacting an anthocyanin with caffeic acid. Here, we compared the thermal stability and formed degradation compounds of different 10-catechyl-pyranoanthocyanins. Pelargonidin-3-glucoside, cyanidin-3-glucoside, malvidin-3-glucoside, anthocyanins differing in the number of substitutions on the B-ring, and their corresponding 10 ...
DOI:
10.1016/j.foodchem.2022.134305
CHORUS:
10.1016/j.foodchem.2022.134305

10. Interactive effects of dietary zinc and water temperature on growth performance, Zn transport, heat shock response and lipid metabolism in the livers of juvenile yellow catfish Pelteobagrus fulvidraco

Author:
Yang He; Tao Zhao; Wu-Hong Lv; Xiao-Ying Tan; Yu-Feng Song; Chang-Chun Song; Chong-Chao Zhong; Zhi Luo
Source:
Aquaculture 2023 v.562 pp. 738795
ISSN:
0044-8486
Subject:
heat; heat shock response; heat stress,   etc   ; Tachysurus fulvidraco; aquaculture; diet; fish; freshwater; freshwater ecosystems; gene expression; growth performance; juveniles; lipid metabolism; nutrient utilization; water temperature; zinc;     Show all 16 Subjects
Abstract:
... A better understanding of metabolic responses is necessary to elucidate interactive effects between water temperature and Zn. This study is performed to investigate the interactive influences of dietary Zn and water temperature on Zn transport, heat stress and lipid metabolism in the livers of freshwater teleost yellow catfish Pelteobagrus fulvidraco. A 2 × 2 factorial design is used in this study ...
DOI:
10.1016/j.aquaculture.2022.738795

11. Lipid rafts may affect the coalescence of milk fat globules through phase transition after thermal treatment

Author:
Teng Wei; Yingchao Huang; Chen Weng; Fang Chen; Chaoli Tan; Wenqun Liu; Zeyuan Deng; Jing Li
Source:
Food chemistry 2023 v.399 pp. 133867
ISSN:
0308-8146
Subject:
heat; heat treatment,   etc   ; ceramides; cholesterol; evolution; food chemistry; glycerophospholipids; lipidomics; milk; milk fat; phase transition; sphingomyelins;     Show all 12 Subjects
Abstract:
... This study aimed to investigate changes of fat globules and their membranes, and further analyze evolution of lipid profile of lipid rafts in membranes during heat processing of cow milk. Size of fat globules increased from 3.16 μm to 3.70 μm and ζ-potential decreased from −0.53 mV to −0.38 mV after thermal treatment, suggesting that fat globule membrane was destroyed and fat globule occurred coal ...
DOI:
10.1016/j.foodchem.2022.133867

12. Novel dynamic equivalent circuit model of integrated energy systems

Author:
Jing Chen; Fan Li; Haoran Li; Bo Sun; Chenghui Zhang; Shuai Liu
Source:
Energy 2023 v.262 pp. 125266
ISSN:
0360-5442
Subject:
heat transfer,   etc   ; electricity; energy; models;     Show all 4 Subjects
Abstract:
... With the transformation from individual energy systems to integrated energy systems (IES), equivalent circuit IES modeling is developed to represent the heat and electricity consistently for coordinated analysis, control and optimization. However, physical properties of equivalent parameters are a mismatch, and the key operation characteristics, including dynamics and coupling, have not yet been f ...
DOI:
10.1016/j.energy.2022.125266

13. Catalyst-scale investigation of polydispersity effect on thermophysical properties in a commercial-scale catalytic MTO fluidized bed reactor

Author:
Zhanghao Wan; Shiliang Yang; Jianhang Hu; Hua Wang
Source:
Energy 2023 v.262 pp. 125401
ISSN:
0360-5442
Subject:
heat transfer; specific heat,   etc   ; Reynolds number; catalysts; energy; models; particle size distribution; temperature; thermal conductivity; transportation; viscosity;     Show all 11 Subjects
Abstract:
... The methanol-to-olefin (MTO) process is commercialized worldwide, yet the understanding of in-furnace phenomena is still lacking. Accordingly, this work explores the multiphase flow and thermochemical characteristics in a commercial-scale MTO fluidized bed reactor using a three-dimensional multiphase particle-in-cell model. After model validations, the intrinsic relationship of solid transportatio ...
DOI:
10.1016/j.energy.2022.125401

14. High efficiency electro- and photo-thermal conversion cellulose nanofiber-based phase change materials for thermal management

Author:
Yu Liu; Hongchen Liu; Haisong Qi
Source:
Journal of colloid and interface science 2023 v.629 pp. 478-486
ISSN:
0021-9797
Subject:
heat; latent heat,   etc   ; calorimeters; carbon nanotubes; cellulose; cellulose nanofibers; chitosan; crosslinking; electron microscopy; energy; phase transition; polyethylene glycol;     Show all 12 Subjects
Abstract:
... Novel phase change materials composed of polyethylene glycol (PEG), cellulose nanofibers (CNFs) and carbon nanotubes (CNTs) were developed by an efficient and environment friendly strategy. The CNFs were modified and cross-linked by chitosan to form three-dimensional network structure, which provides strong support for the resulting CNF/CNT/PEG composites. The structure and properties of CNF/CNT/P ...
DOI:
10.1016/j.jcis.2022.08.132

15. New model of cost allocation for micro-cogeneration systems applied in multi-family buildings — with standard and new-type multi-source energy meters

Author:
Tomasz T. Walek
Source:
Energy 2023 v.262 pp. 125480
ISSN:
0360-5442
Subject:
heat,   etc   ; energy; models; ownership; power generation;     Show all 5 Subjects
Abstract:
... The micro-cogeneration systems MCHP used in multi-family residential buildings do not allow for the proper division of costs between the owners of individual apartments, taking into account their different profiles of power and heat consumption, because of limitations resulting from current methods of cogeneration cost allocation. Moreover, the application of MCHP systems in multi-family buildings ...
DOI:
10.1016/j.energy.2022.125480

16. Reduction of supply temperature in existing district heating: A review of strategies and implementations

Author:
E. Guelpa; M. Capone; A. Sciacovelli; N. Vasset; R. Baviere; V. Verda
Source:
Energy 2023 v.262 pp. 125363
ISSN:
0360-5442
Subject:
heat,   etc   ; cost effectiveness; energy; infrastructure; temperature;     Show all 5 Subjects
Abstract:
... Most of the existing district heating systems are second and third generation and operate with supply temperature above 80–100 °C. To meet long-term decarbonization targets, existing networks should be transformed into low-temperature systems in a cost-effective manner. This paper presents a critical review on the strategies that can be adopted to reduce the supply temperature in existing district ...
DOI:
10.1016/j.energy.2022.125363

17. Tikhonov regularization stabilizes multi-parameter estimation of geothermal heat exchangers

Author:
Yufang Du; Min Li; Yong Li; Alvin CK. Lai
Source:
Energy 2023 v.262 pp. 125479
ISSN:
0360-5442
Subject:
heat,   etc   ; algorithms; data collection; energy; models; temperature;     Show all 6 Subjects
Abstract:
... Parameter estimation from thermal response tests (TRTs) becomes unreliable when testing time reduces or the number of estimated parameters increases because of low identifiability and ill-posed mathematical feature. To overcome this challenge, this paper reports an inversion algorithm integrating a short-time temperature response model and the zero-order Tikhonov regularization strategy. We applie ...
DOI:
10.1016/j.energy.2022.125479

18. Renewable heat powered polygeneration system based on an advanced absorption cycle for rural communities

Author:
G. Praveen Kumar; Dereje S. Ayou; C. Narendran; R. Saravanan; M.P. Maiya; Alberto Coronas
Source:
Energy 2023 v.262 pp. 125300
ISSN:
0360-5442
Subject:
heat,   etc   ; absorption; exergy; freshwater; power generation; temperature;     Show all 6 Subjects
Abstract:
... Integrated thermodynamic system for multiple products such as polygeneration systems utilizes the resource energy efficiently. In this research paper, an advanced absorption cycle based on renewable source heat driven polygeneration is proposed for multiple products to rural communities. This cycle is an ammonia-water absorption cycle with parallel evaporators for different cooling options and the ...
DOI:
10.1016/j.energy.2022.125300

19. The significance of shade provision in reducing street-level summer heat stress in a hot Mediterranean climate

Author:
Or Aleksandrowicz; David Pearlmutter
Source:
Landscape and urban planning 2023 v.229 pp. 104588
ISSN:
0169-2046
Subject:
heat island; heat stress,   etc   ; Mediterranean climate; air; air temperature; data collection; landscapes; relative humidity; shortwave radiation; summer; warm season; wind speed;     Show all 12 Subjects
Abstract:
... The rise in air temperature in urban areas has been attracting the attention of urban climate researchers for years now, focusing on the intensity of the so-called Urban Heat Island (UHI) phenomenon. Recently, though, it has been rightly questioned whether the concept of UHI intensity is helpful in assessing mitigation of urban heat stress, especially since the concept does not reflect the spatial ...
DOI:
10.1016/j.landurbplan.2022.104588

20. Composition and diversity of endolichenic microfungal communities from saxicolous lichens at Nahal Boker, the central Negev Desert, Israel

Author:
Isabella Grishkan; Marina Temina
Source:
Fungal ecology 2023 v.61 pp. 101196
ISSN:
1754-5048
Subject:
heat tolerance,   etc   ; fungi; lichens; species richness; thallus; Israel;     Show all 6 Subjects
Abstract:
... We studied the endolichenic fungal communities from saxicolous lichens occupying the cobbles at Nahal Boker, the central Negev Desert, Israel. Overall, 101 species belonging to 64 genera were isolated from 12 lichen species collected in three seasons from the south-facing slope (SFS) and north-facing slope (NFS) of the wadi. The endolichenic communities possessed a set of traits, which helped them ...
DOI:
10.1016/j.funeco.2022.101196