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Retention time
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Part 2 of ebook "Agency: Starting a creative firm in the age of digital marketing" provides readers with contents including: Part IV - The people, on partners and partnership, employee retention; Part V - Money, bootstrapping, banks and funding; Part VI - Operations, tracking time, working with vendors, creating a product in your service firm;...
172p
giangmacvien
22-06-2024
2
1
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According to the research findings, it is highly suggested to use an effective pricing strategy in order to retain customers in Businesses in Kurdistan. The limitation of this research is lack of time that the researcher was not able to gather more information and data regarding pricing strategy and customer retention. The novelty of this research as specifically to the Erbil market penetration pricing is the best to keep the customer for the long run of business.
15p
longtimenosee10
26-04-2024
2
1
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Therefore, this study aimed to develop and characterize solid lipid nanoparticles (SLNs) containing tinidazole (TNZ-SLNs) oriented to be incorporated into the gel to increase the penetration ability and prolong drug retention time in periodontal tissues.
8p
viwolverine
07-07-2023
5
3
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In this paper, the aim was to evaluate the feasibility of a pellet reactor to treat the plating wastewater. The hydraulic retention time, the initial pH and molar ratio of carbonate to heavy metal was investigated to optimize the heavy metal removal efficiency in the pellet reactor.
6p
vidoctorstrange
06-05-2023
8
4
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In the present proof-of-concept study, we demonstrate that retention time, selectivity and resolution can be increased in asymmetrical flow field-flow fractionation (AF4) by introducing microstructured ultrafiltration membranes.
10p
viginny
23-12-2022
9
3
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In this work, the impact of biological matrices, such as plasma and urine, was evaluated under SFC–HRMS in the field of metabolomics. For this purpose, a representative set of 49 metabolites were selected. The assessment of the matrix effects (ME).
10p
viginny
23-12-2022
10
3
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In this study, we introduce a simple three-step workflow for a universally applicable RI system, to be used in GC×GC analysis of ignitable liquid residue (ILR) for arson investigations. The proposed RI system applies a combination of two well-established GC RI systems: non-isothermal Kovats (K) index in the first dimension and Lee (L) index in the second dimension.
10p
viginny
23-12-2022
10
3
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The use of scanning gradients can significantly reduce method-development time in reversed-phase liquid chromatography. However, there is no consensus on how they can best be used. In the present work we set out to systematically investigate various factors and to formulate guidelines.
13p
viginny
23-12-2022
10
3
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Rapid optimization of gradient liquid chromatographic (LC) separations often utilizes analyte retention modelling to predict retention times as function of eluent composition. However, due to the dwell volume and technical imperfections, the actual gradient may deviate from the set gradient in a fashion unique to the employed instrument.
9p
viginny
23-12-2022
9
2
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A peak-tracking algorithm was developed for use in comprehensive two-dimensional liquid chromatography coupled to mass spectrometry. Chromatographic peaks were tracked across two different chromatograms, utilizing the available spectral information, the statistical moments of the peaks and the relative retention times in both dimensions.
10p
viginny
23-12-2022
5
3
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Structural elucidation of compounds detected with liquid chromatography coupled to high resolution mass spectrometry is a challenging and time-consuming step in the workflow of non-targeted analysis and often requires manual validation of the results. Retention time, alongside exact mass, isotope pattern, fragmentation spectra, and collision cross-section, is valuable information for ruling out unlikely structures and increasing the confidence in others.
12p
viginny
23-12-2022
6
2
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The prediction of chromatographic retention under supercritical-fluid chromatography (SFC) conditions was studied, using established and novel theoretical models over ranges of modifier content, pressure and temperature. Whereas retention models used for liquid chromatography often only consider the modifier fraction, retention in SFC depends much more strongly on pressure and temperature.
9p
viginny
23-12-2022
11
3
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Support vector regression models are created and used to predict the retention times of oligonucleotides separated using gradient ion-pair chromatography with high accuracy. The experimental dataset consisted of fully phosphorothioated oligonucleotides. Two models were trained and validated using two pseudoorthogonal gradient modes and three gradient slopes.
10p
viginny
23-12-2022
7
3
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In this study, laboratory wastewater containing organic matters, heavy metals and aromatic compounds, was treated by vetiver grass (Vetiveria zizanioides) as a phytoremediation. Sewage effluent as a source of nutrient supply for plant growth was first fed to two wetland systems: Mini horizontal subsurface flow (HSSF) and floating raft (FR) wetlands.
4p
vijaguar
16-11-2022
11
3
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Lecture Engineering Economy (8e): Chapter 11. After completing this section, you will understand knowledge about: explain replacement terminology and basics; determine economic service life (ESL); perform replacement/retention study; understand special situations in replacement; perform replacement study over specified time; calculate trade-in value of defender;...
17p
bachkhinhdaluu
03-12-2021
17
1
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Isoquercitrin is a flavonoid chemical compound that can be extracted from different plant species such as Mangifera indica (mango), Rheum nobile, Annona squamosal, Camellia sinensis (tea), and coriander (Coriandrum sativum L.). It possesses various biological activities such as the prevention of thromboembolism and has anticancer, antiinflammatory, and antifatigue activities. Therefore, there is a critical need to elucidate and predict the qualitative and quantitative properties of this phytochemical compound using the high performance liquid chromatography (HPLC) technique.
13p
tudichquannguyet
29-11-2021
12
1
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The results obtained revealed vit. D2 degradation was drastically increased with longer incubation under thermal treatment. However, quercetin and vit. D2 groups were able to significantly inhibit the degradation of vit. D2 and stabilize it, evaluated through the retention percentage. We also exposed vit. D2 at solutions with different pH values (1, 4, 5, 7, 10). Quercetin exerted vit. D2 anti-degradation at different pH values as well as under thermal pressure at different time points. Conclusively, quercetin can be an effective way to reduce temperature and pH induced degradation of vit. D2.
8p
tudichquannguyet
29-11-2021
14
1
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Human urine from domestic wastewater has been considered as an ideal nutrient source for microalgae cultivation due to the high concentration of nitrogen and phosphorus. Moreover, pollution caused by nutrient (N, P) is difficult to treat and costly. In this study, membrane fouling and nutrient removal was evaluated in a membrane photobioreactor (MPBR) system using urine as substrate and microalgae-bacteria as co-cultures under two light - dark cycles.
3p
viwinter2711
05-10-2021
8
2
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Despite very good prosthesis retention times, the growing numbers of primary implantations of hip endoprostheses are leading to increasing numbers of revision operations. Periprosthetic infection, particularly in revision implants, often leads to a massive loss of bone stock, so that in a two-stage exchange the only option left is implantation of a megaendoprosthesis. T
9p
vivermont2711
28-01-2021
6
1
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The research using some advanced, environmentally friendly materials such as water-absorbing polymers and soil-binding polymers in potting medium is also a new direction to improve water retention. The study of manufacturing polybags with different degradation time combined with the use of SAP and PAM in substrates of pots to improve some features of the current nursery.
27p
larachdumlanat129
20-01-2021
18
2
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