scholarly journals Diagnostic errors in patients with diseases of the chest cavity and ways to reduce them

2020 ◽  
Vol 24 (3-6) ◽  
pp. 96-101
Author(s):  
N. Ya. Lukyanenko ◽  
Ya. N. Shoikhet ◽  
A. F. Lazarev ◽  
V. A. Lubennikov ◽  
I. V. Vikhlyanov
Keyword(s):  
Multivariate Analysis ◽  
Integrated Assessment ◽  
Diagnostic Errors ◽  
Chest Cavity ◽  
Integral Data ◽  
Diagnosis Of Diseases

This paper presents an algorithm for reducing the risk of errors in the diagnosis of diseases of the chest cavity within 14 days after treatment of patients. The developed algorithm, based on multivariate analysis of the integrated assessment of clinical and radiological descriptors (signs) of diseases, determination of the probability coefficient of errors, software for comparing individual integral data with established typical characteristics for differentiable pathological processes, improved diagnostics, aimed the doctor at an adequate examination, and reduced the risk of error by 20.1%.

scholarly journals CHEMOMETRY IN UNDERGRADUATE CHEMISTRY COURSES: A PROPOSAL FOR THE USE OF MULTIVARIATE ANALYSIS IN THE DETERMINATION OF pKa

Química Nova ◽  
2014 ◽  
Author(s):  
Paulo Cesar de Souza Pereira ◽  
Camila Fabiano de Freitas ◽  
Cristiane Santi Chaves ◽  
Bianca Martins Estevão ◽  
Diogo Silva Pellosi ◽  
...  
Keyword(s):  
Multivariate Analysis ◽  
Undergraduate Chemistry

scholarly journals The role of integrated assessment of the indicators of external respiration function in cardiac surgical patients

2017 ◽  
Vol 89 (9) ◽  
pp. 109-114
Author(s):  
O V Kamenskaja ◽  
A S Klinkova ◽  
I Ju Loginova ◽  
V V Lomivorotov ◽  
D N Ponomarev ◽  
...  
Keyword(s):  
Integrated Assessment ◽  
Pulmonary Ventilation ◽  
Surgical Patients ◽  
External Respiration ◽  
Diffusing Capacity ◽  
Body Plethysmography ◽  
Operational Risks ◽  
Respiration Function

This literature review dedicated to the importance of an integrated assessment of external respiratory function in cardiovascular diseases (CVDs), including an analysis of up-to-date techniques, such as spirometry, body plethysmography, examination of the diffusing capacity of the lung, determination of O2 consumption with evaluation of the effectiveness of pulmonary ventilation. It considers the pathogenetic components of impairments in pulmonary ventilation and gas exchange, which develop in different CVDs, as well as during and after cardiac surgery. The authors analyze the results of international investigations and their own experience, which emphasize the prognostic value of lung function tests and suggest that there is a need for a comprehensive functional assessment of the respiratory system in cardiac surgical patients for their effective preoperative preparation, assessment and reduction of operational risks, and improvement of the prognosis of surgical treatment.

Determination of the formaldehyde-to-phenol molar ratios of resol resins by infrared spectroscopy and multivariate analysis

2003 ◽  
Vol 89 (13) ◽  
pp. 3582-3586 ◽  
Author(s):  
Hilkka Holopainen ◽  
Leila Alvila ◽  
Tuula T. Pakkanen ◽  
Jouni Rainio
Keyword(s):  
Multivariate Analysis ◽  
Infrared Spectroscopy ◽  
Molar Ratios

scholarly journals Determination of the bruise degree for cherry using Vis-NIR reflection spectroscopy coupled with multivariate analysis

PLoS ONE ◽  
2019 ◽  
Vol 14 (9) ◽  
pp. e0222633 ◽  
Author(s):  
Yuanyuan Shao ◽  
Guantao Xuan ◽  
Zhichao Hu ◽  
Zongmei Gao ◽  
Lei Liu
Keyword(s):  
Multivariate Analysis ◽  
Reflection Spectroscopy

scholarly journals Multivariate Analysis of Photoacoustic Spectra for the Detection of Short-Chained Hydrocarbon Isotopologues

Molecules ◽  
2020 ◽  
Vol 25 (9) ◽  
pp. 2266 ◽  
Author(s):  
Alain Loh ◽  
Marcus Wolff
Keyword(s):  
Multivariate Analysis ◽  
Continuous Wave ◽  
Light Sources ◽  
Least Squares Regression ◽  
Detection Scheme ◽  
Concentration Determination ◽  
Multiple Measurements ◽  
Interband Cascade Lasers ◽  
Cascade Lasers

We report, to our knowledge, the first optical detection scheme for short-chained hydrocarbon isotopologues. The sensor system is based on photoacoustic spectroscopy (PAS). Two continuous wave, thermoelectrically cooled, distributed feedback interband cascade lasers (DFB-ICLs) with emission wavelengths around 3.33 and 3.38 μm, respectively, served as light sources. The investigations comprised the main stable carbon isotopologues of methane (12CH4, 13CH4), ethane (12CH3-12CH3, 13CH3-12CH3, 13CH3-13CH3), and propane (12CH3-12CH2-12CH3, 13CH3-12CH2-12CH3). They were selected because of their importance for numerous applications from climate and planetary research to natural gas exploration. Multiple measurements of single components in nitrogen and synthetic mixtures were conducted at room temperature and atmospheric pressure. Depending on the investigated hydrocarbon isotopologue, detection limits ranging from 0.043 ppmv to 3.4 ppmv were achieved. For a selective concentration determination, multivariate analysis (MVA) was applied. Partial least-squares regression (PLSR) was used to calculate concentrations from the PA spectra. The implementation of MVA has shown that the PA setup in principle works reliably and that the selective concentration determination of short-chained hydrocarbon isotopologues is possible.

scholarly journals In situ analysis of LiFePO4 batteries: Signal extraction by multivariate analysis

2010 ◽  
Vol 25 (2) ◽  
pp. 143-148 ◽  
Author(s):  
Mark A. Rodriguez ◽  
Mark H. Van Benthem ◽  
David Ingersoll ◽  
Sven C. Vogel ◽  
Helmut M. Reiche
Keyword(s):  
Multivariate Analysis ◽  
Neutron Diffraction ◽  
Electrochemical Reaction ◽  
Graphite Phase ◽  
Data Set ◽  
Reaction Behavior ◽  
Electrochemical Cycling ◽  
Li Ion

The electrochemical reaction behavior of a commercial Li-ion battery (LiFePO4-based cathode, graphite-based anode) has been measured via in situ neutron diffraction. A multivariate analysis was successfully applied to the neutron diffraction data set facilitating in the determination of Li bearing phases participating in the electrochemical reaction in both the anode and cathode as a function of state-of-charge (SOC). The analysis resulted in quantified phase fraction values for LiFePO4 and FePO4 cathode compounds as well as the identification of staging behavior of Li6, Li12, Li24, and graphite phases in the anode. An additional Li-graphite phase has also been tentatively identified during electrochemical cycling as LiC48 at conditions of ∼5% to 15% SOC.

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