Search results for "FAST"
showing 10 items of 821 documents
One-dimensional iterative algorithm for three-dimensional point-spread function engineering.
2001
We present a new method with which to binarize pupil filters designed to control the three-dimensional irradiance distribution in the focal volume of an optical system. The method is based on a one-dimensional iterative algorithm, which results in efficient use of computation time and in simple, easy to fabricate binary filters. An acceptable degree of resemblance between the point-spread function of the annular binary filter and that of its gray-tone counterpart is obtained.
Presence of phosphorylatedO-ribosyl-adenosine In T-ψ-stem of yeast methlonine initiator tRNA
1989
We report in this paper on isolation and characterization of two unknown nucleosides G* and [A*] located in the T-psi-stem of yeast methionine initiator tRNA, using the combined means of HPLC protocols, real time UV-absorption spectrum, and post-run mass spectrometry by electron impact or fast atom bombardment. The G* nucleoside in position 65 was identified as unmodified guanosine. The structure of the unknown [A*] in position 64 was characterized as an isomeric form of O-ribosyl-adenosine by comparison of its chromatographic, UV-spectral and mass spectrometric properties with those of authentic O-alpha-ribofuranosyl-(1"----2')-adenosine isolated from biosynthetic poly(adenosine diphosphat…
Novel algorithms for 3D surface point cloud boundary detection and edge reconstruction
2019
Abstract Tessellated surfaces generated from point clouds typically show inaccurate and jagged boundaries. This can lead to tolerance errors and problems such as machine judder if the model is used for ongoing manufacturing applications. This paper introduces a novel boundary point detection algorithm and spatial FFT-based filtering approach, which together allow for direct generation of low noise tessellated surfaces from point cloud data, which are not based on pre-defined threshold values. Existing detection techniques are optimized to detect points belonging to sharp edges and creases. The new algorithm is targeted at the detection of boundary points and it is able to do this better tha…
Analysis of mebendazole binding to its target biomolecule by laser flash photolysis
2016
[EN] Mebendazole (MBZ) and related anticancer benzimidazoles act binding the beta-subunit of Tubulin (TU) before dimerization with alpha-TU with subsequent blocking microtubule formation. Laser flash photolysis (LFP) is a new tool to investigate drug-albumin interactions and to determine binding parameters such as affinity constant or population of binding sites. The aim of this study was to evaluate the interactions between the nonfluorescent mebendazole (MBZ) and its target biomolecule TU using this technique. Before analyzing the MBZ@TU complex it was needed to determine the photophysical properties of MBZ triplet excited state ((3)MBZ*) in different media. Hence, 3MBZ* showed a transien…
Ramadan During Pregnancy – Fasting, Nutrition, Sleep Patterns and Offspring Health at Birth: A Cross-Sectional Study
2020
Background: Intrauterine exposure to Ramadan is associated with adverse offspring health outcomes. Yet, the dynamics behind these associations remain largely unexplored. We investigate if maternal intermittent fasting or other lifestyle changes during Ramadan affect birth outcomes, and determine whether nutritional and sleep behavior during non-fasting hours influences the fasting-birth weight association. Methods: Linear regressions are estimated using OLS to identify the associations between fasting, sleep behavior, sweets consumption and birth weight, 5-minute APGAR score and gestational age. Interaction terms between fasting and other behaviors are included to explore the potential mode…
Detection of damage in civil engineering structures by PCA on enviromental vibration data
2018
The dynamic behavior of civil engineering structures are usually studied by means of ambient vibration observations and their performance is analyzed by Peak Picking and/or Operational Modal Analysis methods. This paper reports the first results of a statistical multivariate approach, specifically Principal Component Analysis, to detect a suspected structural damage on a sicilian highway bridge. Furthermore, the damage simulated in a simple structural model made it possible to understand the characteristics of the method consisting in comparing the observed data on an undamaged structure with those coming from a damaged one.
Forretningsorientert prosjektutvikling : forprosjektrapport til Byggherren i fokus (BIF)
2005
Denne forprosjektrapporten er utarbeidet på oppdrag av Byggherren i fokus v/NBBL, og diskuterer den faglige basisen for å starte opp hovedprosjekter forankret i økonomisk teori innen forretningsbasert prosjektutvikling i byggebransjen. Det skisseres tre mulige omtråder for videre analyse i et hovedprosjekt: Priser og prismodeller for fast eiendom, usikkerhet og realopsjonsanalyse samt markeds- og reguleringssvikt. I forbindelse med hvert av temaene gjennomgås relevant økonomisk teori som basis for videre anlyse i et evenuelt hovedprosjekt.
Fast Photochemistry of Prototypical Phytochromes—A Species vs. Subunit Specific Comparison
2015
Phytochromes are multi-domain red light photosensor proteins, which convert red light photons to biological activity utilizing the multitude of structural and chemical reactions. The steady increase in structural information obtained from various bacteriophytochromes has increased understanding about the functional mechanism of the photochemical processes of the phytochromes. Furthermore, a number of spectroscopic studies have revealed kinetic information about the light-induced reactions. The spectroscopic changes are, however, challenging to connect with the structural changes of the chromophore and the protein environment, as the excited state properties of the chromophores are very sens…
Biorthogonal Wavelet Transforms Originating from Discrete and Discrete-Time Splines
2018
This chapter describes how to generate families of biorthogonal wavelet transforms in spaces of periodic signals using prediction p-filters originating from discrete-time and discrete splines. The transforms are generated by the lifting scheme (Sweldens (Wavelet applications in signal and image processing III, vol 2569, 1995, [7]), Sweldens (Appl Comput Harmon Anal 3:186–200, 1996, [8]), Sweldens (SIAM J Math Anal 29:511–546, 1997, [9]), see also Sect. 7.1 of this volume). The discrete-time wavelets related to those transforms are (anti)symmetric, well localized in time domain and have flat spectra. These families comprise wavelets with any number of local discrete vanishing moments (LDVMs)…
Jauna perioperatīva anestēzijas un rehabilitācijas režīma ietekme uz pēcoperācijas sāpēm, blaknēm, komplikācijām, funkcionālo rehabilitāciju un uztur…
2018
Populācijas novecošanās dēļ gūžas endoprotezēšanas kļūst arvien biežākas, tādēļ tiek meklēti jauni varianti kā “Fast-track” princips, lai uzlabotu pacientu stāvokli un samazinātu nepieciešamo uzturēšanās laiku slimnīcā. Pētījuma mērķis ir pētīt agrīnas pacientu mobilizācijas ietekmi uz sāpēm, blaknēm, komplikācijām, funkcionālo rehabilitāciju un uzturēšanās ilgumu slimnīcā pēc primāras gūžas locītavas endoprotezēšanas, lietojot īsas darbības spinālo anestēziju. Pirmajā pēcoperācijas dienā pētījuma grupā sāpes kustību laikā ir 2,00 ± 1,72 NRS skalā, bet kontroles grupā – 3,33 ± 2,08 , uzturēšanās ilgums pētījuma grupā bija par ~ 1 dienu īsāks , kā arī pacientu pašaprūpes spējas bija labākas.…