Search results for "Zen"

Essere zen oggi

2008

Trepānbiopsijas histoloģiskās atradnes korelācija ar izmaiņām perifērajās asinīs limfomas pacientiem

2019

Kancerogēnais process cilvēka organismā tieši ietekmē cilvēka dzīves kvalitāti, sociālo dzīvi, radot ne tikai veselības problēmas, bet arī pārmērīgu psihoemocionālo spriedzi, ar kuru ne katrs indivīds var tikt galā. Limfoma ir ļaundabīga, heterogēna limfātiskas sistēmas neoplāzija. Limfoma skar jebkura vecuma cilvēkus tā var attīstīties gan bērniem, gan pieaugušiem. Slimību profilakses un kontroles centrs 2019. gadā publicēja datus par iedzīvotāju mirstības cēloņiem, mirušo pacientu skaits limfomas dēļ veidoja 124. Ne-Hodžkinas limfomas pacientu skaits bija 112 jeb 90% savukārt Hodžkinas limfomas pacientu skaits bija 12 jeb 9,7%. Pacientu skaits, vecuma grupā (> 60 gadi) veidoja 102 jeb 82%…

The use of blogs as social media tools of political communication : citizen journalism and public opinion 2.0

2019

In recent years, the political arena has been transformed into a space of public debate, a phenomenon which is both evident, yet hitherto unparalleled. A new range of digital social communication tools framed within the Web 2.0 era, with the blog often proving the tool of choice, has displaced the traditional pre-eminence of the communication scenario, as previously used by the mass media, thanks to a series of more interactive, diverse and credible dynamics which place the user at the very heart of the political discussion process and facilitates processes of social mobilization and collective civic action. This study takes the above situation as its point of departure and guiding principl…

The effects of using participatory working time scheduling software on sickness absence: A difference-in-differences study.

2020

Abstract Background Participatory working time scheduling is a collaborative approach to scheduling shift work. As a potential way of improving work time control, it may provide a means to reducing sickness absence in shift work. So far, experimental and quasi-experimental studies on the effects of increased work time control on sickness absence are lacking. Objective To investigate the effects of using digital participatory working time scheduling software on ward-level sickness absence among Finnish hospital employees. Participants and methods This quasi-experimental study compared the amount of sickness absence in hospital wards using a participatory working time scheduling software (n=1…

Pflanzenfamilien

1841

Molecular Ribbons Containing Pyridine Rings

1996

The first synthesis of the ribbon-like compounds 6–10 is described. The new building block diethyl 2,6-bis(bromomethyl)pyridine-3,5-dicarboxylate 1 was prepared and characterized. Single-crystal X-ray structure analyses indicate that these ribbon-like molecules arrange in a folded conformation, with the pyridine and benzene units being folded in a face-to-face manner, and the tosyl units of 8–10 pointing outwards. The “intramolecular self-assembly” (folding) of these molecular ribbons is primarily attributable to the energetically more favourable syn conformation of both the [3.3]metacyclophanes and the pyridinophanes.

Synthesis, Structure, and Reactivity of (Dihydrogen)(hydrido)iron(II) Complexes Bearing Chiral Diphos­phanes

2015

The heterolytic cleavage of molecular hydrogen by [Fe(H2O)6][BF4]2 and the chiral phosphane (+)-1,2-bis[(2R,5R)-2,5-dimethylphospholano]benzene [(R,R)-Me-DuPhos] or its enantiomer [(S,S)-Me-DuPhos] yields the (dihydrogen)(hydrido)iron complexes [FeH(2-H2){(R,R)-Me-DuPhos}2]BF4 ([R,R-1]BF4) and [FeH(2-H2){(S,S)-Me-DuPhos}2]BF4 ([S,S-1]BF4), respectively. These complexes are fluxional in solution at room temperature, and the trans isomers are observed at 200 K. The ()-cis-[R,R-1]BF4 complex was identified crystallographically as the only stereoisomer at room temperature. The energetic and structural differences between the cis ( and ) and trans isomers were analyzed from a computational (DFT)…

Effects of bupivacaine on human erythrocytes submitted to stress and evidence for an interaction between bupivacaine and flumazenil

1999

Aims To examine the effects of bupivacaine on erythrocytes submitted to an oxidative stress (AAPH) and to provide evidence for an in vitro interaction between bupivacaine and flumazenil. Methods Human erythrocytes were studied with or without AAPH in the presence of different concentrations of bupivacaine (0.15, 0.3, 0.9 and 1.8 mmol l−1 ), or flumazenil (0.16 mmol l−1 ) and with the association of flumazenil and two doses of bupivacaine (0.15 and 0.3 mmol l−1 ). Potassium efflux was measured by flame photometry at t0, and every 30 min for 2 h. Results In the absence of AAPH, extracellular potassium remained unchanged. Oxidative stress induced a significant increase in extracellular potassi…

Prediction of Aquatic Toxicity of Benzene Derivatives to Tetrahymena pyriformis According to OECD Principles

2016

Background: Many QSAR studies have been developed to predict acute toxicity over several biomarkers like Pimephales promelas, Daphnia magna and Tetrahymena pyriformis. Regardless of the progress made in this field there are still some gaps to be resolved such as the prediction of aquatic toxicity over the protozoan T. pyriformis still lack a QSAR study focused in accomplish the OECD principles. Methods: Atom-based quadratic indices are used to obtain quantitative structure-activity relationship (QSAR) models for the prediction of aquatic toxicity. Our models agree with the principles required by the OECD for QSAR models to regulatory purposes. The database employed consists of 392 substitut…

Efficient light-induced phase transitions in halogen-bonded liquid crystals

2016

Here, we present a new family of light-responsive, fluorinated supramolecular liquid crystals (LCs) showing efficient and reversible light-induced LC-to-isotropic phase transitions. Our materials design is based on fluorinated azobenzenes, where the fluorination serves to strengthen the noncovalent interaction with bond-accepting stilbazole molecules, and increase the lifetime of the cis-form of the azobenzene units. The halogen-bonded LCs were characterized by means of X-ray diffraction, hot-stage polarized optical microscopy, and differential scanning calorimetry. Simultaneous analysis of light-induced changes in birefringence, absorption, and optical scattering allowed us to estimate tha…