Influence of preparation and storage of polycrystalline specimens on low-temperature transport property measurements in tin of various purities

1976 ◽  
Vol 22 (5-6) ◽  
pp. 673-679 ◽  
Author(s):  
B. Knecht ◽  
J. M. Suter ◽  
L. Rinderer
Keyword(s):  
Low Temperature ◽  
Transport Property ◽  
And Storage

scholarly journals Evaluation of Properties and Micro-Characteristics of Waste Polyurethane/Styrene-Butadiene-Styrene Composite Modified Asphalt

Polymers ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 2249
Author(s):  
Bei Chen ◽  
Fuqiang Dong ◽  
Xin Yu ◽  
Changjiang Zheng
Keyword(s):  
Low Temperature ◽  
Performance Test ◽  
Permanent Deformation ◽  
Modified Asphalt ◽  
Basic Performance ◽  
Styrene Butadiene Styrene ◽  
Styrene Butadiene ◽  
Sbs Modified Asphalt ◽  
And Storage ◽  
Butadiene Styrene

In order to solve the problems caused by asphalt diseases and prolong the life cycle of asphalt pavement, many studies on the properties of modified asphalt have been conducted, especially polyurethane (PU) modified asphalt. This study is to replace part of the styrene-butadiene-styrene (SBS) modifier with waste polyurethane (WP), for preparing WP/SBS composite modified asphalt, as well as exploring its properties and microstructure. On this basis, this paper studied the basic performance of WP/SBS composite modified asphalt with a conventional performance test, to analyze the high- and low-temperature rheological properties, permanent deformation resistance and storage stability of WP/SBS composite modified asphalt by dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests. The microstructure of WP/SBS composite modified asphalt was also observed by fluorescence microscope (FM) and Fourier transform infrared spectroscopy (FTIR), as well as the reaction between WP and asphalt. According to the results of this study, WP can replace SBS as a modifier to prepare WP/SBS composite modified asphalt with good low-temperature resistance, whose high-temperature performance will be lower than that of SBS modified asphalt. After comprehensive consideration, 4% SBS content and 15% WPU content (4 S/15 W) are determined as the suitable types of WPU/SBS composite modified asphalt.

scholarly journals Encapsulated NOLA™ Fit 5500 Lactase—An Economically Beneficial Way to Obtain Lactose-Free Milk at Low Temperature

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 527
Author(s):  
Katarzyna Czyzewska ◽  
Anna Trusek
Keyword(s):  
Low Temperature ◽  
Storage Temperature ◽  
Competitive Inhibition ◽  
Caloric Content ◽  
Substrate Diffusion ◽  
Galactose Inhibition ◽  
The Subject ◽  
And Storage ◽  
Food Processes ◽  
Hydrolysis Of

The current requirements of industrial biocatalysis are related to economically beneficial and environmentally friendly processes. Such a strategy engages low-temperature reactions. The presented approach is essential, especially in food processes, where temperature affects the quality and nutritional value foodstuffs. The subject of the study is the hydrolysis of lactose with the commercial lactase NOLA™ Fit 5500 (NOLA). The complete decomposition of lactose into two monosaccharides gives a sweeter product, recommended for lactose intolerant people and those controlling a product’s caloric content. The hydrolysis reaction was performed at 15 °C, which is related to milk transportation and storage temperature. The enzyme showed activity over the entire range of substrate concentrations (up to 55 g/L lactose). For reusability and easy isolation, the enzyme was encapsulated in a sodium alginate network. Its stability allows carrying out six cycles of the complete hydrolysis of lactose to monosaccharides, lasting from two to four hours. During the study, the kinetic description of native and encapsulated NOLA was conducted. As a result, the model of competitive galactose inhibition and glucose mixed influence (competitive inhibition and activation) was proposed. The capsule size does not influence the reaction rate; thus, the substrate diffusion into capsules can be omitted from the process description. The prepared 4 mm capsules are easy to separate between cycles, e.g., using sieves.

scholarly journals Effect of Harvest Time and Storage at Low Temperature on Inulin and Potassium Content in Tubers of Jerusalem Artichoke

2021 ◽  
Vol 20 (2) ◽  
pp. 217-223
Author(s):  
Yuichi Matsumoto ◽  
Saori Maruta ◽  
Asuka Komaba ◽  
Keisuke Tsuge ◽  
Keiichi Watanabe
Keyword(s):  
Low Temperature ◽  
Jerusalem Artichoke ◽  
Potassium Content ◽  
Harvest Time ◽  
And Storage

scholarly journals Postharvest quality of pepino melon (Solanum muricatum Aiton) as influenced by NPK fertilizer rates, growing environment and storage temperature

2021 ◽  
Vol 35 (1) ◽  
Author(s):  
Carol Mutua ◽  
Joshua Ogweno ◽  
Robert Gesimba
Keyword(s):  
Low Temperature ◽  
Shelf Life ◽  
Room Temperature ◽  
Postharvest Quality ◽  
Solanum Muricatum ◽  
Npk Fertilizer ◽  
And Storage ◽  
Fertilizer Rates ◽  
Storage Temperatures

The present study evaluated the effect of NPK fertilizer (17:17:17) rates (0, 100, 200, 300 and 400 kg ha-1) on the postharvest quality of field and greenhouse grown pepino melons (Solanum muricatum Ait.) stored at room temperature (15-22°C) and at low temperature (7°C). The study was carried out in randomized complete block design with fruits from the field and greenhouse, five NPK fertilizer rates as treatments and the two storage temperatures replicated three times. Data were collected on percentage fruit weight loss (PWL), total soluble solids (TSS), firmness and shelf life. Results indicated that greenhouse and field grown fruits from the control and plants supplied with 100 kg NPK ha-1 had low PWL at both storage temperatures. Field grown fruits from the control stored at room temperature had the highest TSS and were firmer after 28 days of storage. Field grown fruits not supplied with fertilizer and stored at low temperature had a shelf life of 27 and 26 days in trial one and two respectively. Application of 100 kg NPK ha-1 and storage of pepino melon fruits at low temperature can be used to enhance quality and shelf life.

Sous vide cooked beef muscles: effects of low temperature-long time (LT-LT) treatments on their quality characteristics and storage stability

2002 ◽  
Vol 37 (4) ◽  
pp. 425-441 ◽  
Author(s):  
Sergio R. Vaudagna ◽  
Guillermo Sanchez ◽  
Maria S. Neira ◽  
Ester M. Insani ◽  
Alyandra B. Picallo ◽  
...  
Keyword(s):  
Low Temperature ◽  
Storage Stability ◽  
Quality Characteristics ◽  
Long Time ◽  
Sous Vide ◽  
And Storage ◽  
Beef Muscles

scholarly journals Thermo-Reversible Gelation of Aqueous Hydrazine for Safe Storage of Hydrazine

Technologies ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 53
Author(s):  
Bungo Ochiai ◽  
Yohei Shimada
Keyword(s):  
Low Temperature ◽  
Lower Critical Solution Temperature ◽  
Solution Temperature ◽  
Critical Solution Temperature ◽  
Ambient Temperatures ◽  
Safe Storage ◽  
Release System ◽  
And Storage ◽  
Hydrazine Solution

A reversible gelation–release system was developed for safe storage of toxic hydrazine solution based on gelation at lower critical solution temperature (LCST). Poly(N-isopropylacrylamide) (PNIPAM) and its copolymer could form gels of 35wt% hydrazine by dissolution under low temperature and storage at ambient temperatures. For example, PNIPAM gelled a 63 fold heavier amount of 35wt% hydrazine. Aqueous hydrazine was released from the gels by compression or heating, and the gelation–release cycles proceeded quantitatively (> 95%). The high gelation ability and recyclability are suitable for rechargeable systems for safe storage of hydrazine fuels.

Low-field magneto-transport property of La0.5Sr0.5MnO3 thin films deposited at low temperature by laser ablation

2001 ◽  
Vol 50 (2-3) ◽  
pp. 97-102 ◽  
Author(s):  
J.-M Liu ◽  
Q Huang ◽  
J Li ◽  
C.K Ong ◽  
X.Y Chen ◽  
...  
Keyword(s):  
Thin Films ◽  
Laser Ablation ◽  
Low Temperature ◽  
Transport Property ◽  
Low Field
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