Degradation effect of temperature variation and dye loading g-C3N4 towards organic dyes

We investigated the effect of temperature variation on the secondary bonding interactions between absorbed moisture and epoxies with different morphologies using molecular dynamics simulations.

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The effect of temperature variation on the inflammatory response of rainbow trout

The Journal of Pathology ◽

10.1002/path.1711050404 ◽

1971 ◽

Vol 105 (4) ◽

pp. 257-268 ◽

Cited By ~ 57

Author(s):

J. Peter Finn ◽

N. O. Nielsen

Keyword(s):

Rainbow Trout ◽

Inflammatory Response ◽

Temperature Variation ◽

Effect Of Temperature

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The effect of temperature variation on chloride penetration in concrete

Construction and Building Materials ◽

10.1016/j.conbuildmat.2017.08.139 ◽

2017 ◽

Vol 156 ◽

pp. 73-82 ◽

Cited By ~ 9

Author(s):

Moad Isteita ◽

Yunping Xi

Keyword(s):

Temperature Variation ◽

Chloride Penetration ◽

Effect Of Temperature

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Persistent Effect of Temperature on GDP Identified from Lower Frequency Temperature Variability

10.21203/rs.3.rs-601512/v1 ◽

2021 ◽

Author(s):

Bernardo Bastien-Olvera ◽

Frances Moore

Keyword(s):

Climate Change ◽

Temperature Variation ◽

Cost Benefit ◽

Temperature Variability ◽

Effect Of Temperature ◽

Economic Sectors ◽

Human Welfare ◽

Economic Productivity ◽

Economic Output ◽

Frequency Temperature

Abstract It is well established that temperature variability affects a range of outcomes relevant to human welfare, including health (Gasparrini et al., 2017) emotion and mood (Baylis et al., 2018), and productivity across a number of economic sectors (Carleton & Hsiang, 2016; Dell et al., 2014). However, a critical and still unresolved empirical question is whether temperature variation has a long-lasting effect on economic productivity and, therefore, whether damages compound over time in response to long-lived changes in temperature expected with climate change. Several studies have identified a relationship between temperature and GDP (Burke et al., 2015; Dell et al., 2012; Kalkuhl & Wenz, 2020), but empirical evidence as to the persistence of these effects is still weak. This paper presents a novel approach to isolate the persistent component of temperature effects on output using lower frequency temperature variation. Using three different datasets we find that longer temperature anomalies affect GDP growth as much or more than short-lived anomalies, implying persistent and therefore cumulative effects of climate change on economic output. The population-weighted global effect of -0.8 pp per degree is sufficient to reduce per-capita income in 2100 by 44% under RCP6, approximately an order of magnitude larger than damages currently represented in cost-benefit integrated assessment models (Diaz & Moore, 2017).

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Effect of Temperature Variation on FT-IR Spectrometer Stability

Applied Spectroscopy ◽

10.1366/0003702971938957 ◽

1997 ◽

Vol 51 (1) ◽

pp. 43-50 ◽

Cited By ~ 9

Author(s):

D. M. MacBride ◽

C. G. Malone ◽

J. P. Hebb ◽

E. G. Cravalho

Keyword(s):

Temperature Variation ◽

Thermal Instability ◽

Effect Of Temperature ◽

Optical Bench ◽

Infrared Source ◽

Ft Ir ◽

Purge Gas ◽

Response Variation ◽

Spectrometer Response ◽

Gas Supply

The effect of temperature variation on Fourier transform infrared (FT-IR) spectrometer response stability is investigated for wavenumbers from 10,000 to 100 cm−1 with the use of a temperature measurement and data acquisition system on the spectrometer optical bench. Spectrometer response instability is correlated with local temperature variation for two FT-IR spectrometer systems, with the use of various infrared source, beamsplitter, and detector combinations. The data obtained show that detector responsivity variation and beamsplitter misalignment associated with thermal instability of the spectrometer optical bench are responsible for the observed response instability. Response variation of up to 4% per °C temperature variation is observed. Variations of the laboratory environment and spectrometer purge gas supply temperatures are shown to affect spectrometer thermal stability directly.

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Smart Method for Carotenoids Characterization in Haematococcus pluvialis Red Phase and Evaluation of Astaxanthin Thermal Stability

Antioxidants ◽

10.3390/antiox9050422 ◽

2020 ◽

Vol 9 (5) ◽

pp. 422

Author(s):

Patrizia Casella ◽

Angela Iovine ◽

Sanjeet Mehariya ◽

Tiziana Marino ◽

Dino Musmarra ◽

...

Keyword(s):

Thermal Stability ◽

Food Industry ◽

Room Temperature ◽

Haematococcus Pluvialis ◽

Storage Period ◽

Effect Of Temperature ◽

Official Method ◽

Chromatography Analysis ◽

Promising Source ◽

Degradation Effect

Haematococcus pluvialis microalgae is a promising source of astaxanthin, an excellent antioxidant carotenoid. H. pluvialis, as well as other species, could find more extensive applications as healthy food for a variegated carotenoids composition in addition to astaxanthin. Official method has not currently been used for this purpose. The objective of this work was to propose a method to characterize carotenoids in H. pluvialis after the comparison between spectrophotometric and liquid chromatography analysis. In addition, in order to improve the use of astaxanthin in the food industry, thermal stability was investigated. In this context, the effect of temperature at 40–80 °C, over a 16 h storage period was tested on astaxanthin produced by H. pluvialis. A further test was carried out at room temperature (20 °C) for seven days. A decrease in the astaxanthin concentration was observed at all tested temperatures with a decrease >50% of all-trans isomer at 80 °C after 16 h and an increase of 9-cis and 13-cis isomers. In conclusion, the obtained results showed the importance of evaluating the degradation effect of temperature on astaxanthin used as a food additive for a future greater enhancement of this bioproduct in the food field.

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Pengaruh Temperatur, Konsentrasi Katalis Dan Rasio Molar Metanol-Minyak Terhadap Yield Biodisel Dari Minyak Goreng Bekas Melalui Proses Netralisasi-Transesterifikasi

METANA ◽

10.14710/metana.v13i1.11340 ◽

2018 ◽

Vol 13 (1) ◽

pp. 30

Author(s):

Antonius Prihanto ◽

T.A. Bambang Irawan

Keyword(s):

Temperature Variation ◽

Catalyst Concentration ◽

Process Condition ◽

Effect Of Temperature ◽

Molar Ratio ◽

Concentration Variation ◽

Cooking Oil ◽

Used Cooking Oil

Telah dilakukan penelitian tentang pembuatan biodisel dari minyak goreng bekas melalui proses netralisasi-transesterifikasi. Tujuan penelitian ini adalah untuk mengkaji pengaruh temperatur terhadap yield biodiesel, pengaruh konsentrasi katalis terhadap yield biodiesel dan pengaruh rasio molar methanol-minyak goreng bekas terhadap yield biodiesel melalui proses netralisasi dan transesterifikasi. Untuk mendapatkan kondisi proses transesterifikasi terbaik, maka dikaji pengaruh variasi suhu (30 oC, 40 oC, 50 oC, 60 oC, 70 oC), variasi konsentrasi katalis KOH (0,75 %, 1 %, 1,25 %, 1,5 %, 1,75 %) dan rasio molar metanol-minyak (6:1; 7:1; 8:1; 9:1; 10:1) terhadap yield biodiesel yang dihasilkan dari minyak goreng bekas. Hasil penelitian menunjukkan pada rasio 6 : 1, konsentrasi katalis KOH 1 % pada suhu 60 oC mengahasilkan yield biodiesel maksimal sebesar 87,3 %. Effect of Temperature, Catalyst Concentration and Methanol-Oil Molar Ratio Against Biodiesel Yield from Used Cooking Oil Through Neutralization Transesterification ProcessA research has been conducted on the making of biodiesel from used cooking oil through a neutralization-transesterification process. The purpose of this study was to examine the effect of temperature on biodiesel yield, the effect of catalyst concentration on biodiesel yield and the effect of molar ratio of methanol to used biodiesel yield through neutralization and transesterification process. To obtain the best transesterification process condition, the effect of temperature variation (30 oC, 40 oC, 50 oC, 60 oC, 70 oC), KOH catalyst concentration variation (0.75%, 1%, 1.25%, 1,5 %, 1.75%) and the molar ratio of methanol-oil (6: 1; 7: 1; 8: 1; 9: 1; 10: 1) to the yield of biodiesel produced from used cooking oil. The results showed at a ratio of 6: 1, the concentration of 1% KOH catalyst at 60 ° C resulted in a maximum biodiesel yield of 87.3%.

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Temperature induced phase transition in fluorescence active zein nanoparticles

Canadian Journal of Chemistry ◽

10.1139/cjc-2020-0228 ◽

2021 ◽

Vol 99 (1) ◽

pp. 18-23

Author(s):

Charlie Joe Croxford ◽

Rajpreet Kaur ◽

Kultar Singh ◽

Mandeep Singh Bakshi

Keyword(s):

Phase Transition ◽

Temperature Variation ◽

Room Temperature ◽

Colloidal Stability ◽

Precipitation Method ◽

Effect Of Temperature ◽

Influence Of Temperature ◽

Influence Of Temperature On ◽

Potential Use ◽

Controlled Precipitation

Stable colloidal zein nanoparticles (NPs) were synthesized by using controlled precipitation method. They were made fluorescence active by incorporating a small amount of fluorescence quinolinium surfactant. The incorporation of fluorescence surfactant provided both the colloidal stability and the fluorescence ability to determine the phase transition in zein NPs under the effect of temperature variation. Maintaining colloidal stability under the effect of temperature variation is an essential aspect of zein NPs applicability as a source of vegetarian protein supplement in different food suspensions. Different techniques such as fluorescence, DLS size, zeta potential, and FTIR measurements were applied to determine the influence of temperature on the colloidal stability of zein NPs. Zein NPs undergo phase transition well above room temperature while maintaining their size in nanometer range, and the phase transition temperature decreased with the amount of zein used in the synthesis of zein NPs. The results highlighted the potential use of zein NPs as a vegetarian supplement protein in different food products.

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