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1. Chromatographic analysis of CBD and THC after their acylation with blockade of compound transformation

Author:
Rafal Typek; Piotr Holowinski; Andrzej L. Dawidowicz; Michal P. Dybowski; Michal Rombel
Source:
Talanta 2023 v.251 pp. 123777
ISSN:
0039-9140
Subject:
temperature,   etc   ; acylation; azines; isomerization;     Show all 4 Subjects
Abstract:
... for the analysis of cannabinoids in bio-matrices are continually improved to achieve best possible sensitivity in their detection and accurate quantification. It has been well documented that CBD cyclizes to Δ9-THC and Δ9-THC isomerizes to Δ8-THC under acidic conditions by means of a Lewis-acid-catalyzed process, causing difficulty in accurate quantification of Δ9-THC in the presence of CBD, of CB ...
DOI:
10.1016/j.talanta.2022.123777

2. Underestimated permafrost degradation: Improving the TTOP model based on soil thermal conductivity

Author:
Wenwen Li; Baisha Weng; Denghua Yan; Yuequn Lai; Meng Li; Hao Wang
Source:
Science of the total environment 2023 v.854 pp. 158564
ISSN:
0048-9697
Subject:
soil temperature; surface temperature,   etc   ; altitude; frozen soils; hinterland; hydrologic cycle; models; permafrost; rivers; thermal conductivity; watersheds; Yangtze River;     Show all 12 Subjects
Abstract:
... Under the continuing influence of global warming, resolving the inconsistency of permafrost degradation rates and quantifying the spatial distribution characteristics are critical for high-altitude water cycle processes. The dynamics of permafrost degradation are mainly manifested in soil temperature, which can be measured with high accuracy and high temporal resolution. This study considered the ...
DOI:
10.1016/j.scitotenv.2022.158564

3. Possible high temperature superconducting transitions in disordered graphite obtained from room temperature deintercalated KC[formula omitted]

Author:
Samar Layek; Miguel Monteverde; Gastón Garbarino; Marie-Aude Méasson; André Sulpice; Nedjma Bendiab; Pierre Rodière; Romain Cazali; Abdellali Hadj-Azzem; Vivian Nassif; Daniel Bourgault; Frédéric Gay; Didier Dufeu; Sébastien Pairis; Jean-Louis Hodeau; Manuel Núñez-Regueiro
Source:
Carbon 2023 v.201 pp. 667-678
ISSN:
0008-6223
Subject:
ambient temperature,   etc   ; electrical resistance; graphene; superconductivity;     Show all 4 Subjects
Abstract:
... Although progress with twisted graphene nano-devices is boosting the superconductivity that is the consequence of their Moiré flat electronic bands, the immense choice for future development is an obstacle for their optimisation. We report here that soft-chemistry deintercalation of KC8 breaks down graphite stacking generating a strong disorder that includes stacking twists and variable local dopi ...
DOI:
10.1016/j.carbon.2022.09.041

4. 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:
temperature,   etc   ; cost effectiveness; energy; heat; infrastructure;     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

5. 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:
temperature,   etc   ; algorithms; data collection; energy; heat; models;     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

6. 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:
temperature,   etc   ; absorption; exergy; freshwater; heat; power generation;     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

7. The role of temperature on defect diffusion and nanoscale patterning in graphene

Author:
Ondrej Dyck; Sinchul Yeom; Sarah Dillender; Andrew R. Lupini; Mina Yoon; Stephen Jesse
Source:
Carbon 2023 v.201 pp. 212-221
ISSN:
0008-6223
Subject:
temperature,   etc   ; geometry; graphene; topology; transmission electron microscopes;     Show all 5 Subjects
Abstract:
... Graphene is of great scientific interest due to a variety of unique properties such as ballistic transport, spin selectivity, the quantum hall effect, and other quantum properties. Nanopatterning and atomic scale modifications of graphene are expected to enable further control over its intrinsic properties, providing ways to tune the electronic properties through geometric and strain effects, intr ...
DOI:
10.1016/j.carbon.2022.09.006

8. Sulfate groups position determines the ionic selectivity and syneresis properties of carrageenan systems

Author:
Said Elmarhoum; Sophie Mathieu; Komla Ako; William Helbert
Source:
Carbohydrate polymers 2023 v.299 pp. 120166
ISSN:
0144-8617
Subject:
temperature,   etc   ; galactose; gelation; iota-carrageenan; sulfates; viscosity;     Show all 6 Subjects
Abstract:
... The salt sensitivity and selectivity feature of α-carrageenan (α-Car) were investigated and compared with κ-carrageenan (κ-Car) and iota-carrageenan (ι-Car). These carrageenans are identified by one sulfate group on the 3,6-anhydro-D-galactose (DA) for α-Car, D-galactose (G) for κ-Car and on both carrabiose moieties (G and DA) for ι-Car. The viscosity and temperature, where order-disorder transiti ...
DOI:
10.1016/j.carbpol.2022.120166

9. A mini-review on the plant sources and methods for extraction of rhamnogalacturonan I

Author:
Adrianna Kaczmarska; Piotr M. Pieczywek; Justyna Cybulska; Artur Zdunek
Source:
Food chemistry 2023 v.403 pp. 134378
ISSN:
0308-8146
Subject:
temperature,   etc   ; chemical composition; food chemistry; pH; pectins; solvents;     Show all 6 Subjects
Abstract:
... Rhamnogalacturonan type I (RG-I) is one of the pectin family member abundant in plant cell walls. Process of RG-I extraction from cell walls, either as a one-step or several-stage process, conditions the structure and properties of obtained polysaccharides. In this paper, we provide comprehensive overview of the factors related to the source and extraction techniques that determine the yield and c ...
DOI:
10.1016/j.foodchem.2022.134378

10. Heterogeneous N-doped carbon composite NiSe2–FeSe double-shell hollow nanorods for tunable and high-efficient microwave attenuation

Author:
Zuoting Yang; Ting Wang; Jiafeng Wang; Zhengxuan Luo; Qiuyu Zhang; Baoliang Zhang
Source:
Carbon 2023 v.201 pp. 491-503
ISSN:
0008-6223
Subject:
temperature,   etc   ; absorption; carbon; cation exchange; magnetism; microstructure; nanorods;     Show all 7 Subjects
Abstract:
... To develop high-performance microwave absorbing materials, a heterogeneous NiSe₂–FeSe@NC double-shelled hollow nanorods (NiSe₂–FeSe@NC DSHNs) is constructed based on the strategies of morphology structure optimization and multicomponent recombination. First, NiSe₂–FeSe DSHNs are prepared through the cation exchange of Fe-based MOFs and subsequent selenization process. After that, the surface is co ...
DOI:
10.1016/j.carbon.2022.09.023

11. Permanent optical bleaching in HPHT-diamond via aggregation of C- and NV-centers excited by visible-range femtosecond laser pulses

Author:
Sergey I. Kudryashov; Victor G. Vins; Pavel A. Danilov; Evgeny V. Kuzmin; Andrey V. Muratov; Galina Yu. Kriulina; Jiajun Chen; Alexey N. Kirichenko; Yulia S. Gulina; Sergey A. Ostrikov; Peter P. Paholchuk; Michael S. Kovalev; Nikolay B. Rodionov; Alexey O. Levchenko
Source:
Carbon 2023 v.201 pp. 399-407
ISSN:
0008-6223
Subject:
ambient temperature,   etc   ; absorbance; agitation; carbon; energy; nitrogen; photoluminescence;     Show all 7 Subjects
Abstract:
... Red-colored high-pressure, high-temperature synthesized (HPHT) diamond was exposed in its bulk in a number of patterns to millions of 0.3-ps, 515-nm laser pulses focused by a 0.25-NA micro-objective. The resulting arrays of bright micrometer-scale spots produced at variable laser exposure and pulse energy was characterized by optical transmission microspectroscopy, room-temperature dynamic and sta ...
DOI:
10.1016/j.carbon.2022.09.040

12. Thermal stabilities of lycopene and β-carotene in tomato pulp and pink grapefruit juice

Author:
Hanim Sevindik Baç; Oktay Yemiş; Mehmet Özkan
Source:
Journal of food engineering 2023 v.337 pp. 111217
ISSN:
0260-8774
Subject:
temperature,   etc   ; grapefruit juice; lycopene; pulp; reaction kinetics; tomatoes;     Show all 6 Subjects
Abstract:
... Thermal stabilities of lycopene and β-carotene in tomato pulp and pink grapefruit juice were studied at 80, 95 and 110 °C. Lycopene and β-carotene degradations in both products followed to first-order reaction kinetics, but biphasic curves were obtained for β-carotene degradation. Stabilities of both pigments are highly affected by processing temperatures. For example, t₁/₂ values for lycopene deg ...
DOI:
10.1016/j.jfoodeng.2022.111217

13. Enhanced removal of high-As(III) from Cl(-I)-diluted SO4(-II)-rich wastewater at pH 2.3 via mixed tooeleite and (Cl(-I)-free) ferric arsenite hydroxychloride formation

Author:
Zidan Yuan; Guoqing Zhang; Xing Wu; Xu Ma; Jinru Lin; Shaofeng Wang; Yongfeng Jia
Source:
Journal of environmental sciences (China) 2023 v.124 pp. 31-41
ISSN:
1001-0742
Subject:
temperature,   etc   ; arsenites; cost effectiveness; ferrihydrite; hydrolysis; pH; wastewater; China;     Show all 8 Subjects
Abstract:
... An advanced cost-saving method of removal of high-As(III) from SO₄(-II)-rich metallurgical wastewater has been developed by diluting the SO₄(-II) content with As(III)-Cl(-I)-rich metallurgical wastewater and then by the direct precipitation of As(III) with Fe(III) at pH 2.3. As(III) removal at various SO₄(-II)/Cl(-I) molar ratios and temperatures was investigated. The results showed that 65.2‒98.2 ...
DOI:
10.1016/j.jes.2021.10.025

14. The self-association properties of partially dephosphorylated bovine beta-casein

Author:
Sijia Song; Yingying Lin; Yuning Zhang; Yujia Luo; Huiyuan Guo
Source:
Food hydrocolloids 2023 v.134 pp. 108019
ISSN:
0268-005X
Subject:
temperature,   etc   ; beta-casein; cattle; hydrocolloids; infant formulas; pH; phosphates;     Show all 7 Subjects
Abstract:
... Partially dephosphorylated bovine beta-casein has great potential to become a novel infant formula base in the future. At present, there are few studies on the self-association properties of partially dephosphorylated bovine beta-casein, which are very essential and important for its processing and application. This study investigated the self-association properties and physical stability of parti ...
DOI:
10.1016/j.foodhyd.2022.108019

15. Effect of lossy thin-walled cylindrical food containers on microwave heating performance

Author:
Huacheng Zhu; Junhao Su; Fengming Yang; Yuping Wu; Jinghua Ye; Kama Huang; Yang Yang
Source:
Journal of food engineering 2023 v.337 pp. 111232
ISSN:
0260-8774
Subject:
temperature,   etc   ; energy; heat transfer; microwave treatment; optics; porous media;     Show all 6 Subjects
Abstract:
... Cylindrical containers are commonly used in microwave food processing applications. However, due to the shape effect, microwave energy mainly focuses in the center of the sample within the container, leading to a nonuniform temperature gradient between the inner and outer layers of the sample. Employing a lossy container may be an effective method to address this issue because the heat conduction ...
DOI:
10.1016/j.jfoodeng.2022.111232

16. Energetics and mechanism of complexation between β-lactoglobulin and oligochitosan

Author:
Valerij Y. Grinberg; Tatiana V. Burova; Natalia V. Grinberg; Vladimir E. Tikhonov; Alexander S. Dubovik; Victor N. Orlov; Irina G. Plashchina; Anatolii I. Usov; Alexei R. Khokhlov
Source:
Food hydrocolloids 2023 v.134 pp. 108021
ISSN:
0268-005X
Subject:
temperature,   etc   ; chitosan; denaturation; enthalpy; entropy; hydrocolloids; pH; sorption isotherms;     Show all 8 Subjects
Abstract:
... β-lactoglobulin–oligochitosan (MW 9500 Da) system was studied under conditions of protein-polysaccharide incompatibility, the dipole-charge, and charge-charge protein-polysaccharide interactions at pH 3.0, 5.5, and 6.0, respectively, using ITC, DSC, and DLS. At pH 5.5 and 6.0, the ITC data revealed a complex formation between β-lactoglobulin and oligochitosan. The binding curves of the protein to ...
DOI:
10.1016/j.foodhyd.2022.108021

17. Decoupling thermal effects and possible non-thermal effects of microwaves in vacuum evaporation of glucose solutions

Author:
Yuan Tao; Bowen Yan; Nana Zhang; Jianxin Zhao; Hao Zhang; Wei Chen; Daming Fan
Source:
Journal of food engineering 2023 v.338 pp. 111257
ISSN:
0260-8774
Subject:
temperature,   etc   ; atmospheric pressure; electric field; evaporation; glucose; molecular dynamics;     Show all 6 Subjects
Abstract:
... Microwave vacuum evaporation (MVE) is a promising alternative to conventional methods. However, the mechanisms underlying its efficiency remain elusive. In this study, the effects of microwaves on glucose solutions were investigated via molecular dynamics (MD) simulations and experimental studies to elucidate possible microwave non-thermal and thermal effects, respectively. MD simulations on energ ...
DOI:
10.1016/j.jfoodeng.2022.111257

18. Degradation of glyphosate along coffee roasting: Do residue levels in green beans mirror exposure derived from coffee consumption?

Author:
Thierry Delatour; Flavia Badoud; Kevin Severin; Mark Bücking; Bernd Göckener; Viviane Theurillat
Source:
Food chemistry 2023 v.403 pp. 134355
ISSN:
0308-8146
Subject:
temperature,   etc   ; carbon; carbon dioxide; dimethylamine; food chemistry; glyphosate; methylamine; moieties;     Show all 8 Subjects
Abstract:
... Robusta and Arabica green beans were supplemented with carbon 14-glyphosate labelled on each carbon position alternatively prior to roasting, up to 220 °C for Robusta and 200 °C for Arabica (2, 5 and 10 min). The results of the study point a significant decomposition of glyphosate that happens during roasting, from at least 42 % to > 74 % depending on roasting conditions (time, temperature) and co ...
DOI:
10.1016/j.foodchem.2022.134355

19. Triacylglycerol composition and thermodynamic profiles of fractions from dry fractionation of anhydrous milk fat

Author:
Xin Si; Huiquan Zhu; Panpan Zhu; Yunna Wang; Xiaoyang Pang; Ning Ju; Jiaping Lv; Shuwen Zhang
Source:
Journal of food composition and analysis 2023 v.115 pp. 104916
ISSN:
0889-1575
Subject:
ambient temperature,   etc   ; anhydrous milk fat; crystallization; fractionation; latent heat; triacylglycerols;     Show all 6 Subjects
Abstract:
... This research provided a more in-depth look at the physiochemical properties of milk fat. The milk fat was fractionated between 30 and 15 °C into eight fractions with different melting points, the cooling step were successively 30, 25, 20 and 15 ℃. Physiochemical properties of different fractions, which include fatty acids, triacylglycerols, thermodynamics, and crystallization behavior, also were ...
DOI:
10.1016/j.jfca.2022.104916

20. Energy analysis and optimization of iso-octane and n-heptane combustion process

Author:
Jianan Wei; Haifeng Liu; Hongyan Zhu; Yuqing Cai; Hu Wang; Mingfa Yao
Source:
Energy 2023 v.262 pp. 125561
ISSN:
0360-5442
Subject:
temperature,   etc   ; combustion; cost effectiveness; exergy; fuels; heat; heptane; iso-octanes;     Show all 8 Subjects
Abstract:
... The energy analysis and optimization were conducted under different boundary conditions for iso-octane and n-heptane constant volume self-ignition process from the view of energy (HR: Heat Release) and exergy (EL: Exergy Loss) of chemical reactions, which were classified into five series: LTO (Low Temperature Oxidation), H₂O₂ Loop, Fuel Fragment，H–O and CO–CO₂. The results indicate that the HRR (H ...
DOI:
10.1016/j.energy.2022.125561