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13.346  Articles
1 of 1.336 pages  |  10  records  |  more records»
Currently, developers of modern refrigeration equipment, in accordance with the plans of the UN, are moving to natural refrigerants (hydrocarbons, carbon dioxide and ammonia) that do not have an adverse technological impact on the ecosystem of the planet.... see more

Currently, developers of modern refrigeration equipment, in accordance with the plans of the UN, are moving to natural refrigerants (hydrocarbons, carbon dioxide and ammonia) that do not have an adverse technological impact on the ecosystem of the planet.... see more

This experimental work focused on the thermal activation of natural pozzolan (NP) from the town of Beni-Saf, in order to improveits reactivity. The present study consists of using natural pozzolan as partial replacement of ordinary Portland cement, with 1... see more

This experimental work focused on the thermal activation of natural pozzolan (NP) from the town of Beni-Saf, in order to improveits reactivity. The present study consists of using natural pozzolan as partial replacement of ordinary Portland cement, with 1... see more

The features and dynamics of the freezing-defrost processes of the studied sample of browned onion were established and studied. At the research it was revealed, that at freezing temperature –20 °? the value of maximal freezing speed does not change.The p... see more

The features and dynamics of the freezing-defrost processes of the studied sample of browned onion were established and studied. At the research it was revealed, that at freezing temperature –20 °? the value of maximal freezing speed does not change.The p... see more

In this work discusses the main characteristics of reliability of radio electronic devices, methods of their calculation. Proposed mathematical models for determination of parameters of thermal fields and recieved an analytical solution for the calculatio... see more

Functioning of the track circuits and automatic block system on a pass section with a steep profile has been investigated. The traction calculations, the thermal operating modes of choke transformers, the operating regimes of track circuits with installin... see more

Molybdenum disulfide (MoS2) has recently attracted considerable interests due to its unique properties and potential applications. Chemical vapor deposition (CVD) method is used widely to grow large-area and high-quality MoS2 single crystals. Here, we rep... see more

1 of 1.336 pages  |  10  records  |  more records»