Further consideration is made of the exact equation for peak capacity by Potts, L. W.; Carr, P. W. Anal. Chem. 2011, 83, 7614-7615 for liquid chromatographs with significant extra-column broadening. Equivalent exact equations are easily derived that provide comprehension and insight of how extra-column broadening degrades chromatographic performance as measured by peak capacity.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1021/ac502005a | DOI Listing |
Sci Rep
January 2025
School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan, 232001, Anhui, China.
To investigate the changes in the strength and deformation of the blast load-damaged sandstone roof plate under cyclic loading and unloading conditions at different confining pressures, a triaxial loading device was used to carry out graded cyclic unloading tests on specimens with different degrees of damage, and the test results were summarized. The effects of blast-load-induced damage, confining pressure and loading stage on the strength, cohesion, internal friction angle, residual strain and volumetric strain were analyzed. (1) Compared with that of the undamaged specimen at a confining pressure of 0 MPa, the peak stress reductions in the vibration-damaged and blast-damaged specimens were 4.
View Article and Find Full Text PDFPhys Rev Lett
December 2024
Department of Mechanical Engineering, Stanford University, Stanford, California 94305, USA.
Microstructural heterogeneities arising from molecular clusters directly affect the nonlinear thermodynamic properties of supercritical fluids. We present a physical model to elucidate the relation between energy exchange and heterogeneous cluster dynamics during the transition from liquidlike to gaslike conditions. By analyzing molecular-dynamics data and employing physical principles, the model considers contributions from three key processes, namely, changing cluster density, cluster separation, and transfer of molecules between clusters.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Centre for Brain Research, Indian Institute of Science, Bangalore, Karnataka, India.
Background: Pulmonary Function Tests (PFTs) are the non-invasive tests to measure the lung function. Relationship between pulmonary function and cognition is an emerging area of research, understanding this is crucial for prevention and management of dementia. Hence this study aims to investigate the association between pulmonary function and cognition.
View Article and Find Full Text PDFJ Indian Prosthodont Soc
January 2025
Department of Dental Materials, Vishnu Dental College, Bhimavaram, Andhra Pradesh, India.
Aim: This study aimed to evaluate the effect of partially edentulous ()PED condition on lung function through spirometry tests and comparison of airflow rates between dentulous and PED subjects.
Settings And Design: The study design was a cross-sectional study conducted in the department of prosthodontics.
Materials And Methods: Twenty-eight dentulous and 28 PED patients with an age range of 25-50 years were included in the study.
ACS Sens
January 2025
Department of Chemistry, Wayne State University, 5101 Cass Ave, Detroit, Michigan 48202, United States.
Bioanalytical sensors are adept at quantifying target analytes from complex sample matrices with high sensitivity, but their multiplexing capacity is limited. Conversely, analytical separations afford great multiplexing capacity but typically require analyte labeling to increase sensitivity. Here, we report the development of a separation-based sensor to sensitively quantify unlabeled polysaccharides using particle motion tracking within a microfluidic electrophoresis platform.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!