Search results for " EMI"
showing 10 items of 1830 documents
The Impact of the Spanish Foreign trade on its Real CO2 Emissions
2019
CO2 emissions are a global problem. This means that nothing or very little will change if only particular countries are involved. The aim of this paper is the attempt to show the real CO2 emissions of Spain as well as the impact of its trade on CO2 emissions in other countries in the world and in the EU in 2017. This study was conducted on the group of countries that are the major emitters of CO2 in the world including most of the EU members. Countries with negligible CO2 emissions were omitted. Actual CO2 emissions were obtained by applying the actual emission factor. This considers the transfer of CO2 in export products and services as well as those imported by particular countries. The r…
Decagram-Scale Synthesis of Multicolor Carbon Nanodots: Self-Tracking Nanoheaters with Inherent and Selective Anticancer Properties
2022
Carbon nanodots (CDs) are a new class of carbon-based nanoparticles endowed with photoluminescence, high specific surface area, and good photothermal conversion, which have spearheaded many breakthroughs in medicine, especially in drug delivery and cancer theranostics. However, the tight control of their structural, optical, and biological properties and the synthesis scale-up have been very difficult so far. Here, we report for the first time an efficient protocol for the one-step synthesis of decagram-scale quantities of N,S-doped CDs with a narrow size distribution, along with a single nanostructure multicolor emission, high near-infrared (NIR) photothermal conversion efficiency, and sel…
The Beginning and Development of the Theranostic Approach in Nuclear Medicine, as Exemplified by the Radionuclide Pair
2017
In the context of radiopharmacy and molecular imaging, the concept of theranostics entails a therapy-accompanying diagnosis with the aim of a patient-specific treatment. Using the adequate diagnostic radiopharmaceutical, the disease and the state of the disease are verified for an individual patient. The other way around, it verifies that the radiopharmaceutical in hand represents a target-specific and selective molecule: the “best one” for that individual patient. Transforming diagnostic imaging into quantitative dosimetric information, the optimum radioactivity (expressed in maximum radiation dose to the target tissue and tolerable dose to healthy organs) of the adequate radiotherapeutica…
An Autonomous System to Take Angular Thermal-Infrared Measurements for Validating Satellite Products
2015
An autonomous system for field land surface temperature (LST) measurements taken at different observation angles was developed to be deployed easily at any conventional meteorological tower station. The system permits ground-truth data to be acquired on a continuous basis, and angularly scans land and sky hemispheres with a single thermal-infrared (TIR) radiometer. This paper describes the autonomous angular system and the methodology to assess ground-truth LST and relative-to-nadir emissivity data from system measurements. Ground-truth LSTs were used to validate satellite-retrieved LST products at two experimental sites (rice crop and shrubland areas). The relative-to-nadir emissivity valu…
Korporatīvo obligāciju emisijas procesa analīze un tā pilnveidošana Latvijā
2020
Katras valsts tautsaimniecība var attīstīties tad, ja palielinās tā valsts kapitālsabiedrību vai privāto uzņēmumu ražošanas un pakalpojumu sniegšanas spēja. Līdz ar to, viens no valsts ekonomikas izaugsmes izšķirošajiem faktoriem ir attīstītais kapitāla tirgus, kur uzņēmumi var ātri un ērti piesaistīt nepieciešamo parāda kapitālu savai attīstībai. Tomēr, Latvijā obligāciju tirgus attīstība būtiski tiek aizkavētā, neskatoties uz tirgus attīstības potenciālu. Laika periodā no 2014. līdz 2018. gadam Latvijas korporatīvo obligāciju tirgus kapitalizācija pret valsts IKP saglabājās zemā līmenī. Turklāt, tirgū joprojām ir liels trūkums pēc jauniem obligāciju emitentiem, it sevišķi pēc uzņēmumiem n…
Development of the first PETALO prototype and SiPM studies for neutrino physics
2023
La tomografia per emissió de positrons (PET) és una tècnica no invasiva que proporciona imatges funcionals dels processos metabòlics que ocorren en el cos. Un radiotraçador dopat amb un isòtop emissor de positrons s'injecta en el cos del pacient i s'acumula en l'àrea a estudiar. Allí el positró s'aniquila amb un electró de l'entorn i dona lloc a dues gammes que eixen en direccions oposades. La detecció de les dues gammes en coincidència ens permet inferir la posició de l'anihilació i, per tant, reconstruir imatges tridimensionals o dinàmiques que mostren els processos metabòlics que ocorren en el cos. En aquest treball, discutim en profunditat el potencial del projecte PETALO (Positron Emis…
Tanatologičeskaâ problematika v povesti "Zlaâ večnostʹ" Georgiâ Peskova
2018
Pod pseudonimem Gieorgij Pieskow ukrywała się Elena Dejsza, przedstawicielka „młodszego pokolenia” pisarzy pierwszej fali emigracji rosyjskiej, autorka opowieści Zła wieczność (1932). W utworze istotne miejsce zajmuje problematyka tanatologiczna. Rozpatrywana jest ona w różnych aspektach: poruszany jest tu problem samobójstwa, odbieranego jako zwycięstwo nad śmiercią; sporo miejsca poświęca się immortologii — bibliotekarz ma obsesję na punkcie nieśmiertelności; zwraca się także uwagę na starzenie się jako zjawisko towarzyszące umieraniu; dokonuje się też zabójstwa. W sferze ideowo-tematycznej poruszany jest problem zagłady cywilizacji europejskiej. Na tanatologię artystyczną Gieorgija Piesk…
r Process (n, γ) Rate Constraints from the γ Emission of Neutron Unbound States in β decay
2017
Total absorption gamma-ray spectroscopy is used to measure accurately the intensity of γγ emission from neutron-unbound states populated in the ββ-decay of delayed-neutron emitters. From the comparison of this intensity with the intensity of neutron emission a constraint on the (n, γγ) cross section for highly unstable neutron-rich nuclei can be deduced. A surprisingly large γγ branching was observed for a number of isotopes which might indicate the need to increase by a large factor the Hauser-Feshbach (n, γγ) cross-section estimates that impact on r process abundance calculations. peerReviewed
Total absorption spectroscopy study of the β decay of 86Br and 91Rb
2017
The beta decays of 86Br and 91Rb have been studied using the total absorption spectroscopy technique. The radioactive nuclei were produced at the Ion Guide Isotope Separator On-Line facility in Jyväskylä and further purified using the JYFLTRAP. 86Br and 91Rb are considered to be major contributors to the decay heat in reactors. In addition, 91Rb was used as a normalization point in direct measurements of mean gamma energies released in the beta decay of fission products by Rudstam et al. assuming that this decay was well known from high-resolution measurements. Our results show that both decays were suffering from the Pandemonium effect and that the results of Rudstam et al. should be renor…
Total absorption γ-ray spectroscopy of the β-delayed neutron emitters 87Br, 88Br, and 94Rb
2017
We investigate the decay of 87,88Br and 94Rb using total absorption γ -ray spectroscopy. These important fission products are β-delayed neutron emitters. Our data show considerable βγ intensity, so far unobserved in high-resolution γ -ray spectroscopy, from states at high excitation energy. We also find significant differences with the β intensity that can be deduced from existing measurements of the β spectrum. We evaluate the impact of the present data on reactor decay heat using summation calculations. Although the effect is relatively small it helps to reduce the discrepancy between calculations and integral measurements of the photon component for 235U fission at cooling times in the r…