Ferroelectric, Switchable Dielectric and Nonlinear Optical Properties in Inorganic-Organic Lead-Free 1D Hybrids Based on Bi(III) and Azetidine: (CNH)[BiCl], (CNH)[BiBr].

This study investigates lead-free organic-inorganic hybrids (CNH)[BiCl] () and (CNH)[BiBr] (), focusing on their structural, dielectric, ferroelectric, and optical properties. Both compounds exhibit paraelectric () to ferroelectric () phase transitions (PTs) at 230/233 K and 228/229 K, respectively, transitioning from orthorhombic () to monoclinic (2) phases, with distorted [BiX] octahedra forming 1D chains. Quasielastic neutron scattering and solid-state H NMR studies reveal the localized motion of azetidinium cations.

A phase III, multicentre, randomised, investigator-masked, cross-over, comparative, non-inferiority trial evaluating the efficacy and tolerability of generic preservative-free Latanoprost (Polpharma S.A.) compared to Xalatan (Pfizer) in patients with ocular hypertension or primary open-angle glaucoma.

Background: Primary open-angle glaucoma (POAG), often associated with increased intraocular pressure (IOP), can lead to permanent damage of the optic nerve, concomitant visual field loss, and blindness. Latanoprost, a prostaglandin F2α analogue, reduces IOP and is used to treat glaucoma. In this clinical trial, we evaluated the efficacy of Latanoprost Polpharma, a generic preservative-free latanoprost 0.

Temperature symmetry breaking and properties of lead-free organic-inorganic hybrids: bismuth(III) iodide and antimony(III) iodide: (S(CH))[BiI] and (S(CH))[SbI].

We have synthesized and characterized two novel lead-free organic-inorganic hybrid crystals: (S(CH))[BiI] (TBI) and (S(CH))[SbI] (TSI). Thermal DSC, TG, and DTA analyses indicate structural phase transitions (PTs) in both compounds; TBI undergoes two structural phase transitions at 314.2/314.

Dielectric-Optical Switches: Photoluminescent, EPR, and Magnetic Studies on Organic-Inorganic Hybrid (azetidinium)MnBr.

A new organic-inorganic hybrid, , has been synthesized and characterized. The thermal differential scanning calorimetry, differential thermal analysis, and thermogravimetric analyses indicate one structural phase transition (PT) at 346 and 349 K, on cooling and heating, respectively. crystallizes at 365 K in the orthorhombic, , structure, which transforms to monoclinic 2/ at 200 K.

(CNH)SbI and (CNH)BiI: ferroelastic lead-free hybrid perovskite-like materials as potential semiconducting absorbers.

We have synthesised and characterised novel organic-inorganic hybrid crystals: and ( and ). The thermal DSC and TG analyses indicate four structural phase transitions (PTs) at 366.2/366.

Tafel-analysis of the AP-CITROX decontamination technology of Inconel alloy 690.

Safe, effective, cost-effective, easy feasible and low-waste decontamination technologies are fundamental importance from environmental and radiation protection aspects. In this study the effectiveness of AP-CITROX decontamination technology of Inconel alloy 690 was investigated. Non-radioactive representative metal samples were formed to test of decontamination technology and the clear-, the corroded-, the decontaminated layer were analysed electrochemically.

Comparison of analytical methods for measuring chloride content in crude oil.

Although chloride compounds are the main cause of corrosion damage in distillation unit, standard methods to determine them do not guarantee good results. In this study, the chloride concentration of different crude oils was measured using different techniques and the results were compared. ASTM D3230, D4929 as standard methods, XRF as alternative technique and Neutron Activation Analysis as reference method, were applied.

Advances and Property Investigations of an Organic-Inorganic Ferroelectric: (diisopropylammonium)[CdBr].

The preparation of materials featuring more than one ferroelectric phase represents a promising strategy for controlling electrical properties arising from spontaneous polarization, since it offers an added advantage of temperature-dependent toggling between two different ferroelectric states. Here, we report on the discovery of a unique ferroelectric-ferroelectric transition in diisopropylammonium tetrabromocadmate (, (CHN)[CdBr]) with a value of 244 K, which is continuous in nature. Both phases crystallize in the same polar orthorhombic space group, 2.

Phase transition tuning by Fe(iii)/Co(iii) substitution in switchable cyano-bridged perovskites: (CHN)[KFeCo(CN)].

The single-crystals of mixed (CHN)[KFeCo(CN)] crystals, with different ratios of x = 0, 0.29, 0.42, 0.

Tobacco plant as possible biomonitoring tool of red mud dust fallout and increased natural radioactivity.

Exposure to toxic heavy metal content in soil and inherent naturally occurring radioactive materials (NORM) needs to be monitored, especially after industrial accidents and remediation efforts. Just such an accident happened near Ajka city in Hungary; a large quantity of red mud flooded out from a reservoir. The afflicted area was remediated, and the red mud deposition technology was changed from a wet to a dry procedure.

Structural phase transitions coupled with prominent dielectric anomalies and dielectric relaxation in [(CH)NH][KCo(CN)] and mixed [(CH)NH][KFeCo(CN)] double perovskite hybrids.

The crystals of pure [(CH)NH][KFe(CN)] (TrMAFe) and [(CH)NH][KCo(CN)] (TrMACo) as well as their mixed crystals (TrMAFeCo), with different ratios of x = 0, 0.12, 0.18, 0.

[The classification of ocular trauma cases between 2014 and 2018 at the in-patient ophthalmological department of the Markusovszky University Teaching Hospital].

To analyse and classify the ocular trauma cases at the in-patient ophthalmological department of the Markusovszky University Teaching Hospital between 2014 and 2018. We analysed the eye injury cases between 01. 01.

Multifunctional materials based on the double-perovskite organic-inorganic hybrid (CHNH)[KCr(CN)] showing switchable dielectric, magnetic, and semiconducting behaviour.

Herein, we have synthesised and characterised a novel organic-inorganic hybrid crystal, [CHNH]KCr(CN) (MACr). Thermal analysis (DSC, TGA-DTA) indicates one structural phase transition (PT) at 450 K. The modified equation of the tolerance factor, t, was used to estimate the theoretical PT temperature for a crystal with Mn(iii).

A feasibility study on the determination of Sr food-chain transfer using stable strontium as a surrogate and neutron activation analysis.

We evaluated the applicability of neutron activation analysis for investigating the potential mobility of Sr in a pasture area in Hungary. To measure strontium concentrations, we made use of the Sr(n,γ)Sr radiative capture reaction using neutron activation analysis and performed gamma spectroscopy using Compton-suppression techniques on the resulting 514.0 keV gamma ray.

Isostructural phase transition, quasielastic neutron scattering and magnetic resonance studies of a bistable dielectric ion-pair crystal [(CH)NH]KCr(CN).

We have synthesised and characterised a novel organic-inorganic hybrid crystal, [(CH3)2NH2]2KCr(CN)6. The thermal DSC, TMA, DTG and DTA analyses indicate two solid-to-solid structural phase transitions (PTs). According to the X-ray diffraction experiments, the first PT at 220 K is isostructural, since it does not involve a change of the space group.

Reorientational dynamics of organic cations in perovskite-like coordination polymers.

Here we report the dynamics of organic cations as guest molecules in a perovskite host-framework. The molecular motion of CHNH (MAFe), (CH)NH (DMAFe) and (CH)NH (TrMAFe) in the cage formed by KFe(CN) units was studied using a combination of experimental methods: (i) thermal analysis, (ii) dielectric and electric studies, (iii) optical observations, (iv) EPR and H NMR spectroscopy and (v) quasielastic neutron scattering (QENS). In the case of MAFe and TrMAFe, the thermal analysis reveals one solid-to-solid phase transition (PT) and two PTs for the DMAFe crystal.

Investigations of organic-inorganic hybrids based on homopiperidinium cation with haloantimonates(iii) and halobismuthates(iii). Crystal structures, reversible phase transitions, semiconducting and molecular dynamic properties.

A description of the thermal, structural, 1H NMR, electric and optical properties of four organic-inorganic hybrids, haloantimonates(iii) and halobismuthates(iii), based on homopiperidinium cation: (C6H14N)2SbCl5 (abbrev. HSC), (C6H14N)2SbBr5 (HSB), (C6H14N)2BiCl6[H3O] (HBC), (C6H14N)2BiBr5 (HBB), is presented. The common feature of the crystal structures of the studied compounds is the 1D (one-dimensional) chain for the anionic network in HSC, HSB and HBB, 1D hydrogen bond chain between 0D (zero-dimensional, isolated) BiCl6 octahedrons and hydronium moieties in HBC as well as a rich polymorphism in the solid state for all title compounds.

Determination of cesium transfer factors by instrumental neutron activation analysis.

Food-chain models are used to predict radionuclide ingestion after fallout deposition. These models include those transfer processes (soil-to-plant transfer factor(s) [TF], plant-to-animal transfer coefficient(s) [TC] and concentration ratio [CR]) that are likely to be important for radiological assessment. The range of variability for transfer factors for the same plant groups is great, about 4-5 orders of magnitude, which limits their applicability.

Flexible crystals of perovskite-like coordination polymers with a tunable and switchable organic guest: (CHNH)[KFe(CN)] and (CHNH)[KCo(CN)].

The crystal structure has been determined for (CHNH)[KCo(CN)] at temperatures 100 and 443 K. It crystallizes in the monoclinic space group C2/c (LT) and in the cubic one Fm3[combining macron]m (HT). The dielectric response has been investigated for single crystals of pure K[A'(CN)] and guest-hosts of (CHNH)[KA'(CN)], where A' is a trivalent metal, Co or Fe.

Preliminary study of the applicability of the thin gap method on alpha emitters.

The thin gap method as an in-situ radiotracer technique is widely used. This study investigated the applicability of alpha emitters. PIPS and CsI alpha spectrometers were applied in a thin gap cell.

[Not Available].

Due to the climate change zoonoses, dirofilariasis in particular is spreading. Hence, it is likely that we will encounter with this problem more frequently in the future Our intention with this case presentation is to draw attention to the increasing number of nematodes that cause differential diagnostic problems. The patient underwent surgery with suspicion of pulmonary malignancy suggested by a peripheral rounded opacity in imaging, but histological examination revealed dirofilariasis.

Structure and tunneling splitting spectra of methyl groups of tetramethylpyrazine in complexes with chloranilic and bromanilic acids.

The crystal and molecular structure of the 2,3,5,6-tetramethylpyrazine (TMP) complex with 2,5-dibromo-3,6-dihydroxy-p-quinone (bromanilic acid, BRA) has been studied and the results are compared with TMP CLA (2,5-dichloro-3,6-dihydroxy-p-quinone (chloranilic acid, CLA) complex. The X-ray structure of TMP BRA complex indicates the formation of dimeric units, in which two BRA(-) anions are connected by two O-H···O (2.646(2) Å) hydrogen bonds, whereas the cations and anions are joined together by strong N(+)-H···O(-) (2.

[Long-term survival after lung-sparing central bronchoplastic procedures [CBPs] for malignant tumors].

Background: Bronchial malignancies are leading tumour-related cause of death. Prolonged survival can only be expected after radical resections. Central bronchoplastic procedures, which save the whole lung parenchyma, however, may play a role.

4,4'-, 5,5'-, and 6,6'-dimethyl-2,2'-bipyridyls: the structures, phase transitions, vibrations, and methyl group tunneling of their complexes with chloranilic acid.

The crystal and molecular structures of 4,4(')- and 6,6(')-dimethyl-2,2(')-bipyridyl complexes with 2,5-dichloro-3,6-dihydroxy-p-benzoquinone (chloranilic acid, CLA) have been determined and compared with those of the complex with the 5,5(')-derivative, which is known to possess interesting antiferroelectric properties. In the crystalline state, all three compounds form hydrogen bonded chains with N(+)-H···O(-) and O-H···N bridges on both sides of the bipyridyl constituent. The comparison of three derivatives indicates that the N(+)-H···O(-) hydrogen bonds are shortest for the 5,5(')-dimethyl complex.

The structure of diaminodurene and the dynamics of the methyl groups.

Diaminodurene crystallizes in the orthorhombic space group Pbca, with eight molecules in the unit cell. Four inequivalent methyl groups with different environments exist in a molecule. The amino groups are also different, which is well reflected in infrared spectra.