“…Experimentally determining the RI values of different aldehyde and ketone compounds in all kinds of polar stationary phases is expensive and time consuming. Quantitative structure activity relationship (QSAR) is an important chemometric technique that has been widely used to correlate the properties of chemicals to their molecular structures. …”
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“…A series of optimizations were performed on the adsorption conditions of the hydrogel adsorbent and the optimized conditions were obtained as follows: the amount of adsorbent used was 0.1 g, adsorption time was 5 h, the pH of malachite green solution was 9, the adsorption temperature was 40 ℃, and the initial concentration of malachite green solution was 100 mg/L. …”
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“…Moreover, the temperature and time of derivatization, as well as the dosage of the derivatization agent, were optimized. …”
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“…In addition, the characteristics of the online hyphenation of three non-stationary phase separations, HDC, CE, and flow FFF, with ICP-MS are compared, including the separation mechanism, sample volume, analytical time, detection sensitivity, size range, size resolution, recovery, reproducibility, and capability for ion analysis. …”
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“…A one-pot enrichment platform based on a V-shaped filter was established, which reduced sample loss, avoided cross-contamination between reactions, and shortened sample preparation time. In addition, the protein-level acetylation conditions were investigated with the optimal labeling conditions as follows: triple coupling using 5 mmol/L Ac-NHS at pH 7.0 and 500 mmol/L ammonium for 15 min provided minimized acetylation rates (acetylation labeling efficiencies of Ser, Thr, and Tyr were lower than 4%, 2%, and 1%, respectively), along with the highest peptide-spectrum match number and satisfactory Lys labeling efficiency (up to 98%). …”
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“…Then, 0.4 mL of 10% hypertonic saline was slowly injected from the distal end of the left femoral vein. At the same time, the femoral vein turned dark red, which indicated the formation of thrombosis. …”
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“…The eight common peaks in the fingerprint of the Ziziphi Spinosae Semen extracts, identified by HPLC-quadrupole time-of-flight mass spectrometry, were attributed to flavonoids by reference substance identification, literature comparison, and high-resolution mass spectrometry data analysis. …”
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“…To ensure the integrity of the separation of low-brominated components, the column separation time was shortened, the response of high-boiling components was improved (BDE-190 and BDE-209), the decomposition of BDE-209 on the chromatographic column was effectively prevented, and the requirement of the simultaneous determination of multiple PBDEs was met. …”
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“…The UPLC⁃MS/MS method, not only helped shorten the analysis time, but also accurate quantification of low ginsenoside contents in complex matrix samples. …”
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“…Furthermore, the chemical constituents of tea flowers were annotated with information about the retention time, MS fragmentation, and MS/MS fragmentation. …”
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“…The intra- and inter-day precisions were examined, and the RSDs of the peak area and migration time were found to be below 4.9% and 1.9%, respectively, indicating good repeatability (inter-day) and reproducibility (inter-day) of the method. …”
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“…Thus, the Lowry assay is complex, time-consuming, and of low selectivity. Compared to the Lowry method, the method we developed is simpler and more automatic. …”
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“…The effect of sample storage time (0, 0.5, 1, 2, 3, 4, and 6 h) on the responses of the target component was evaluated. …”
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“…Chiral CE-MS can provide a wide range of qualitative information on samples simultaneously in a single run, including the migration time, relative molecular mass, and ionic fragments. …”
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“…BACKGROUND: Timing of initiation of kidney-replacement therapy (KRT) in critically ill patients remains controversial. …”
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“…Some studies have reported that F-PELD in day surgery mode produced favorable outcomes for LDH. At the same time, minimally invasive spinal surgery following enhanced recovery after surgery (ERAS) presents a rising trend in recent years, but few studies reported whether F-PELD will produce better outcomes in the day surgery (DS) mode combined with ERAS. …”
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“…Mathematical models have shown that the time between infection, isolation of cases, and quarantining of contacts are the most important components that determine whether the pandemic can be controlled. …”
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“…Nanomaterials have many advantages over traditional antibiotics, including improved stability, controlled antibiotic release, targeted administration, enhanced bioavailability, and the use of antibiotic-loaded nanomaterials, such as the one herein reported for the first time, appear to be a promising strategy to combat antibiotic-resistant bacteria. …”
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“…IMPORTANCE: Assessing booster effectiveness of COVID-19 mRNA vaccine and inactivated SARS-CoV-2 vaccine over longer time intervals and in response to any further SARS-CoV-2 variants is crucial in determining optimal COVID-19 vaccination strategies. …”
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“…CONCLUSIONS: Amongst patients with T2DM, recent ACS, and a moderate-to-high likelihood of advanced liver fibrosis, apabetalone was associated with a significantly lower rate of ischemic MACE and HHF and attenuated the increase in hepatic FS over time.…”
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