Results 311 to 320 of about 174,217 (383)
Some of the next articles are maybe not open access.

Preparation of Li2CO3 powder nanoparticles by vacuum freeze drying

Ceramics International, 2021
Abstract Decreasing the particle size of Li2CO3 powder is beneficial for advancing its applications in the manufacturing of different materials and drug delivery. Therefore, in this study, a novel bottom-up process based on freezing is proposed for the production of nanoparticles.
Wenfeng Mo   +6 more
openaire   +2 more sources

Evaluation of the Polyethylene Glycol Impregnation and Vacuum Freeze-Drying Method for Waterlogged Archaeological Wood: Conservation of the Yenikapı 1 Shipwreck

Studies in Conservation, 2023
The YK 1 shipwreck, found at Yenikapı, Istanbul, is one of 37 shipwrecks dating to the medieval era. This paper describes the studies and the processes which were conducted to conserve the YK 1.
Namık Kılıç, A. Kılıç
semanticscholar   +1 more source

Graphene Oxide/Fe2O3 Nanocomposite as an Efficient Catalyst for Thermal Decomposition of Ammonium Perchlorate via the Vacuum-Freeze-Drying Method.

Langmuir, 2021
The combination of graphene oxide (GO) and iron oxide (Fe2O3) may induce property enforcement and application extension. Herein, GO/Fe2O3 nanocomposites were synthesized via the vacuum-freeze-drying method and used for the thermal decomposition of ...
Jiayun Pei   +3 more
semanticscholar   +1 more source

Effects of freeze-drying and microwave vacuum freeze-drying on the activity of IgY: From the perspective of protein structure

Drying Technology, 2021
Freeze-drying (FD) is often used for therapeutic proteins and other biological drugs to extend their shelf life, but it usually reduces the activity and stability of the protein and has a longer drying cycle.
Zhe Wang   +8 more
semanticscholar   +1 more source

Sublimation Freeze-Drying without Vacuum

Science, 1959
Analysis of the freeze-drying procedure shows that the passage of water vapor from the drying boundary through the dried shell is facilitated primarily by the vapor pressure gradient rather than by the absolute pressure of the system. This is experimentally confirmed, and a device for freeze-drying at atmospheric pressure is described.
openaire   +3 more sources

Freeze‐drying using vacuum‐induced surface freezing

Journal of Pharmaceutical Sciences, 2002
A method of freezing during freeze-drying, which avoids undercooling of a solution and allows growth of large, dendritic ice crystals, was investigated. Aqueous solutions of mannitol, sucrose, or glycine were placed under a chamber vacuum of approximately 1 mbar at a shelf temperature of +10 degrees C.
Martin, Kramer   +2 more
openaire   +2 more sources

Effects of vacuum microwave combined with freeze-drying on the physicochemical properties, phenolic compounds, and antioxidant capacity of pear fruit slices.

Journal of Food Science, 2023
The effects of freeze-drying (FD), vacuum microwave drying after freeze-drying (FD-VMD), and freeze-drying after vacuum microwave drying (VMD-FD) on the physicochemical properties, phenolic compounds, and antioxidant capacity of pear fruit slices were ...
Huizhe Zhang   +6 more
semanticscholar   +1 more source

Vacuum freeze drying combined with catalyzed infrared drying of chive: Effects on flavor and quality characterization

Drying Technology
Vacuum freeze drying (VFD) combined with thermal drying can solve the defects of vacuum freeze-dried chives, such as faint flavor, unpleasant color, and taste.
Jingyi Han   +8 more
semanticscholar   +1 more source

High pressure-assisted vacuum-freeze drying: A novel, efficient way to accelerate moisture migration in shrimp processing.

Journal of Food Science, 2020
High pressure processing (HPP), as nonthermal processing technology, has the potential to increase the drying rate due to its improvement of heat and mass exchange in different processes. In this study, the moisture migration in shrimps during HPP-vacuum-
J. Ling   +8 more
semanticscholar   +1 more source

Freeze drying - vacuum sublimation

Journal of Scientific Instruments, 1951
A short account is given of the principles involved in the dehydration of heat sensitive materials by sublimation from the frozen state. References are made to drying rates and important design features of commercial apparatus.
openaire   +1 more source

Home - About - Disclaimer - Privacy