The FEV1/FVC ratio, also called modified Tiffeneau-Pinelli index, [1] is a calculated ratio used in the diagnosis of obstructive and restrictive lung disease. [2][3] It represents the proportion of a …

2023年3月3日 · FEV1 is measured during a spirometry test, also known as a pulmonary function test, which involves forcefully breathing out into a mouthpiece connected to a spirometer …

2023年5月23日 · Working out a person’s FEV1 value can help diagnose chronic lung diseases, such as chronic obstructive pulmonary disease (COPD). FEV1 and other measurements also …

What do the test results mean? Your doctor will use your spirometry test results and information about your symptoms to determine your COPD stage. One result from the test is the ratio of …

2025年3月8日 · The FEV1/FVC ratio is a test that helps measure how much air you can forcefully expire (exhale) from your lungs. It involves a tool called a spirometer that can deliver two …

Sporlan type F with SAE flare and EF with ODF solder connections are small brass bar body valves with identical internal construction and replaceable thermostatic elements. These …

FVE-1-C, EXPANSION VALVE 3/8X1/2 SAE FLARE. Sporlan Genuine OEM replacement part. Sporlan is well known for its high quality food equipment services. Use genuine OEM parts for …

Both valve types are available with adjustable superheat, long lasting replaceable power element and accessible internal parts. Each valve is factory tested to ensure positive leak-free …

2004年1月25日 · FVE is a classical flowering time locus of the autonomous pathway 6, 13, 14, as fve mutants flowered later than wild-type plants in any photoperiod condition (Fig. 1). The …

本文对拟南芥晚花突变体fca-1、fve-1的营养生长时相转变过程进行了形态学观察和基因表达分析。 结果表明:与野生型相比,fve-1、fca-1植株幼龄期延长,导致营养生长时相转变延迟。