In this study, two systems are brought forward to recover the waste heat of a proton exchange membrane fuel cell (PEMFC), which are named the organic Rankine cycle (ORC), and heat pump (HP) combined organic Rankine cycle (HPORC). The performances of both systems are simulated on the platform of MATLAB with R123, R245fa, R134a, water, and ethanol being selected as the working fluid, respectively...

Converting waste heat into electricity has captured the interest of scientists for years because its enormous potential to improve energy efficiency and lessen environmental impacts. While there are numerous applications recover lost energy, they often not efficient or cheap enough make a real-world impact. The aim this study is develop recovery system recycling factory operating in Hatay, Turk...

2-[(18)F]fluoro-2-deoxy-d-glucose ((18)FDG) is a tumor diagnostic radiotracer of great importance in both diagnosing primary and metastatic tumors and in monitoring the efficacy of the treatment. P-glycoprotein (Pgp) is an active transporter that is often expressed in various malignancies either intrinsically or appears later upon disease progression or in response to chemotherapy. Several auth...

Several media report highlight on that the pharmaceutical companies require ultra-low temperatures -80°C to transport and store its COVID-19 vaccines. This research presents thermodynamic analysis cascade refrigeration system (CRS) with several refrigerant pairs which are R32/R170, R123/R170, R134a/R170, R404A/R170, R407c/R170, R410/R170, hydrocarbon (HC) pair Propane/Ethane, namely R290/R170. ...

OBJECTIVES The efficiency of the anthelmintics used to treat small domestic ruminants infected with nematodes is compromised by the emergence of resistant parasites. Both specific and non-specific mechanisms of resistance exist. The non-specific mechanisms involve multiple resistance phenomena and are dependent on the multidrug resistance (MDR) system, which is also responsible for the developm...

The blood-brain barrier (BBB) is a specialized vascular interface that restricts the entry of many compounds into brain. This is accomplished through the sealing of vascular endothelial cells together with tight junction proteins to prevent paracellular diffusion. In addition, the BBB has a high degree of expression of numerous efflux transporters which actively extrude compounds back into bloo...

As an efficient energy conversion technology, the organic Rankine cycle (ORC) has been widely applied in medium- and low-grade heat sources. In order to explore experimental performance of ORC reveal effects operation parameters, setup was built R123 selected as working fluid. experiments, source temperature well mass flow rates fluid cooling water were controlled. Under design conditions, net ...

Dihydrorhodamine (DHR) 123 is a fluorophore commonly used for measuring reactive oxygen species (ROS), often after exposing cells to ultraviolet (UV) irradiation or oxidative burst inducers such as Phorbol 12-myristate 13-acetate (PMA). However, the negative effects of UV irradiation on oxidation of DHR123 itself to green fluorescence rhodamine (R) 123 under different experimental conditions (e...