Experimental study on the impact of indoor unit airflow velocity on the performance of an automotive heat pump system with a suction line heat exchanger.

This study aimed to investigate the effect of changing the indoor unit air flow rate on the performance of an automobile heat pump with a suction line heat exchanger. Using a four-way valve, the automotive heat pump system was developed by reversing the refrigerant direction in the automobile air conditioning system, excluding the compressor. A suction line heat exchanger was added to the test system to enhance heat transfer between the liquid and suction lines of the automotive heat pump system.

Evaluation of Neutrophil-to-Lymphocyte Ratio and Mean Platelet Volume in Patients with Active and Inactive Thyroid Orbitopathy.

Objectives: The aim of this study was to evaluate the neutrophil-to-lymphocyte ratio (NLR) and the mean platelet volume (MPV) in patients with active thyroid orbitopathy (TO) and to compare it with that of both healthy subjects and patients with inactive TO.

Methods: Twenty patients with active TO (Group 1), 25 patients with inactive TO (Group 2), and 35 age- and sex-matched healthy subjects (Group 3) were included in this study. Patients with other systemic and ocular diseases, patients with a history of intraocular or orbital surgery, and patients using systemic drugs were excluded.