Search results for "LIFETIME"
showing 10 items of 212 documents
A nitroreductase and glutathione responsive nanoplatform for integration of gene delivery and near-infrared fluorescence imaging
2020
A novel platform rationally integrating indocyanine green analogues and an arginine-rich dendritic peptide with both nitroreductase (NTR) and glutathione (GSH) reduction responsive linkers was developed. This multifunctional platform can enable selective and efficient gene delivery and specific turn-on fluorescence imaging in tumors.
Survey data and Bayesian analysis: a cost-efficient way to estimate customer equity
2014
We present a Bayesian framework for estimating the customer lifetime value (CLV) and the customer equity (CE) based on the purchasing behavior deducible from the market surveys on customer purchasing behavior. The proposed framework systematically addresses the challenges faced when the future value of customers is estimated based on survey data. The scarcity of the survey data and the sampling variance are countered by utilizing the prior information and quantifying the uncertainty of the CE and CLV estimates by posterior distributions. Furthermore, information on the purchase behavior of the customers of competitors available in the survey data is integrated to the framework. The introduc…
Josephson-based Threshold Detector for Lévy-Distributed Current Fluctuations
2019
We propose a threshold detector for Lévy-distributed fluctuations based on a Josephson junction. The Lévy-noise current added to a linearly ramped bias current results in clear changes in the distribution of switching currents out of the zero-voltage state of the junction. We observe that the analysis of the cumulative distribution function of the switching currents supplies information on both the characteristics' shape parameter α of the Lévy statistics. Moreover, we discuss a theoretical model, which allows characteristic features of the Lévy fluctuations to be extracted from a measured distribution of switching currents. In view of these results, this system can effectively find an appl…
Correlative atomic force and confocal fluorescence microscopy: single molecule imaging and force induced spectral shifts (Conference Presentation)
2016
A grand challenge in nanoscience is to correlate structure or morphology of individual nano-sized objects with their photo-physical properties. An early example have been measurements of the emission spectra and polarization of single semiconductor quantum dots as well as their crystallographic structure by a combination of confocal fluorescence microscopy and transmission electron microscopy.[1] Recently, the simultaneous use of confocal fluorescence and atomic force microscopy (AFM) has allowed for correlating the morphology/conformation of individual nanoparticle oligomers or molecules with their photo-physics.[2, 3] In particular, we have employed the tip of an AFM cantilever to apply c…
Conformational Transitions upon Maturation Rule Surface and pH-Responsiveness of α-Lactalbumin Microparticulates
2021
De novo designed protein supramolecular structures are nowadays attracting much interest as highly performing biomaterials. While a clear advantage is provided by the intrinsic biocompatibility and...
Latvijas Universitātes Tautsaimniecības un tiesību zinātņu fakultātes tiesību zinātņu profesora Aleksandra Būmaņa kapakmenis Rīgas Meža kapos pēc atk…
1991
The tombstone of Alfrēds Būmanis, member of the Latvian Student fraternity Fraternitas Lettica, Latvian lawyer and professor of law at the Faculty of Economics and Law of the University of Latvia, at the Riga Forest Cemetery after the unveiling.
Konstantīna Čakstes piemiņas plāksnes atklāšanas fotogrāfija
2023
Rakstā tiek skaidrota LU prof. Konstantīna Čakstes piemiņas tradīcijas uzsākšana LU, skaidrojot tā cēloņus (K. Čakstes kapavietas atklāšana), norisi (K. Čakstes piemiņas plāksnes atklāšana) un sekas (K. Čakstes piemiņas kopšana un tā labums LU Muzejam kā pētnieciskai atmiņu institūcija). Par raksta pamatu izvēlēta vēsturiska fotogrāfija, kurā attēlota K. Čakstes piemiņas plāksnes atklāšana, taču izmantots arī citu avotu un literatūras klāsts raksta sagatavošanā. Raksts sagatavots Latvijas valsts un LU 105 gadu jubileju ietvaros, kas mijas kopā ar pašreizējo starptautisko spriedzi - Krievijas-Ukrainas kara eskalāciju.
1992. gada I semestra Latvijas Prezidiju konventa sēdes 25. protokols
1992
25th protocol of the 1992 1st semester session of the Presidium Convent reconstituted in Latvia, describing the renewal of student fraternities during the restoration of the Latvia's independence from the USSR, the Latvian student fraternity Fraternitas Lettica assuming the leadership of the Latvian Presidium Convent and its tasks during the quarter of the 1992 1st semester.
1992. gada I semestra Latvijas Prezidiju konventa sēdes 26. protokols
1992
26th protocol of the 1992 1st semester Presidium Convent, describing the approval of 25th protocol, reports of officials, denationalisation of student fraternity property, organisation of the Latvian Union of Filister Societies and voting rights at meetings of the Presidium Convent.
Prevalence of Low Back Pain among Primary School Students from the City of Valencia (Spain)
2021
It is well-known that low back pain (LBP) prevalence is high among school-age children. However, literature concerning the initial onset of back pain between the ages of three and eleven years is scarce. The present study aims to analyze the prevalence of LBP in kindergarten and primary school students. A total of 278 (9.9 ± 2.1 years old