Enhancing water shedding behavior on aluminum surfaces is important in the design of energy-efficient heat exchangers. In this work, a method for fabricating oil-infused aluminum surfaces for HVAC&R systems is described for the purpose of exploiting the slippery nature of such surfaces, thereby improving the overall surface wettability. A microstructured, porous aluminum fin stocks with heterog...

A novel dual source vapor injection heat pump (DSVIHP) using exhaust and ambient air is proposed. The exhausted from the building first releases energy to medium-pressure evaporator then mixed with low-pressure evaporator. (VI) compressor of two inlets connected low medium pressure evaporators. It's time that a VI employed recover ventilation heat. system can minimize loss provide unique defros...

Abstract The epidemic is affecting the global economy, plunging many industries. scale of and government controls, restrictions constraints have led to imbalances in world trade put companies under pressure. a test individual companies’ ability operate effectively new conditions, including occupational risk management. research was conducted using questionnaire method, study attended by 199 res...

OBJECTIVE The preservation of biological samples at a low temperature is important for later biochemical and/or histological analyses. However, the molecular viability of thawed samples has not been studied sufficiently in depth. The present study was undertaken to evaluate the viability of intact tissues, tissue homogenates, and isolated total RNA after defrosting for more than twenty-four hou...

PURPOSE To present a new low-cost high fidelity bench model of cryopreserved trachea that can be used to learn surgical skills from medical students to cardiothoracic surgery fellows. METHODS Ten tracheas were harvested from ten non-trachea related research dogs at the moment of euthanasia. Each trachea was trimmed in six or seven rings segments. They were cryopreserved and stored during 60 d...

Neurons communicate with their target cells primarily by the release of chemical transmitters from presynaptic nerve terminals. The study of CNS presynaptic nerve terminals, isolated as synaptosomes (SSMs) has, however, been hampered by the typical small size of these structures that precludes the introduction of non-membrane permeable test substances such as peptides and drugs. We have develop...