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In the present study, the peak capacity potential of ultra-long porous cylindrical pillar array columns is investigated. Coupling 4 columns of 2 m long allows to work near the minimal separation impedance of small molecules under retained conditions at a maximal pressure load of 250 bar. Minimal plate heights of H=5.0 µm, H=6.3 µm and H=7.7 µm were obtained for uracil (unretained), butyrophenone (k=0.85), valerophenone (k=1.94) respectively, corresponding to a number of theoretical plates N=1.6×106, N=1.2×106 and N=1.0×106. The optimal linear velocities were 0.60 mm/s for the retained compounds and 0.74 mm/s for the unretained compound. Based on a mixture of 9 compounds, the peak capacity nc was determined as a function of gradient time (tG). Peak capacities (tG-based) of 1103 and 1815 were obtained when applying 650-min and 2050-min gradients (tG/t0 = 4.5 and 14, respectively, with tG the gradient time and t0 the void time). These values are much higher than earlier reported peak capacity values for small molecules.
This article was published in the following journal.
Name: Analytical chemistry
This study aimed to elucidate whether the peak (maximum) ground reaction force (GRF) can be used as an indicator of better sprint acceleration performance. Eighteen male sprinters performed 60-m maxim...
The ability to measure and record high-resolution depth images at long stand-off distances is important for a wide range of applications, including connected and automotive vehicles, defense and secur...
Bipolar electrogram (BiEGM)-based substrate maps are heavily influenced by direction of a wavefront to the mapping bipole. In this study, we evaluate high-resolution, orientation-independent peak-to-p...
The mechanisms linking reduced diffusing capacity of the lung for carbon monoxide (DCO) to dyspnea and exercise intolerance across the COPD continuum are poorly understood. COPD progression generally ...
Ketosis-prone type 2 diabetes (KPD) is recognized as atypical diabetes. These patients are often male, characterized by obesity, sudden onset of ketosis, and transient decrease in insulin secretion ca...
The purpose of this study is to test whether or not the 4 Pillars Toolkit increases adult Influenza, pneumococcal polysaccharide vaccine (PPSV), tetanus, adult diphtheria and acellular per...
The study will be done for the following purposes: - to see if Pillar implants in combination with CPAP therapy can help people with their OSA by decreasing the CPAP pressures ...
The Pillar palatal implant procedure is a minimally invasive and commercially available treatment for mild to moderate obstructive sleep apnea (OSA) in the United States and Europe. The i...
Cough Peak Flow (CPF) seems to be an efficient tool to assess cough capacity for the intensive care unit (ICU) ventilated patient. CPF can be used in the ventilator weaning process, as ref...
Implantation with left ventricular assist device (LVAD) in patients with end-stage heart failure (HF) leads to improvements in survival and quality of life, however, work capacity remains ...
Cells forming a framework supporting the sensory AUDITORY HAIR CELLS in the organ of Corti. Lateral to the medial inner hair cells, there are inner pillar cells, outer pillar cells, Deiters cells, Hensens cells, Claudius cells, Boettchers cells, and others.
Measurement of the maximum rate of airflow attained during a FORCED VITAL CAPACITY determination. Common abbreviations are PEFR and PFR.
Time period from 1701 through 1800 of the common era.
The simultaneous analysis of multiple samples of TISSUES or CELLS from BIOPSY or in vitro culture that have been arranged in an array format on slides or microchips.
The volume of air contained in the lungs at the end of a maximal inspiration. It is the equivalent to each of the following sums: VITAL CAPACITY plus RESIDUAL VOLUME; INSPIRATORY CAPACITY plus FUNCTIONAL RESIDUAL CAPACITY; TIDAL VOLUME plus INSPIRATORY RESERVE VOLUME plus functional residual capacity; or tidal volume plus inspiratory reserve volume plus EXPIRATORY RESERVE VOLUME plus residual volume.
A diagnostic test is any kind of medical test performed to aid in the diagnosis or detection of disease. For example: to diagnose diseases to measure the progress or recovery from disease to confirm that a person is free from disease Clin...