Kinetics of CO Capture with Calcium Oxide during Direct Air Capture in a Fluidized Bed.

The bulk of research in carbon capture involves high CO concentrations. This work instead describes the kinetics of CaO carbonation in mixtures with CO between 0.38 and 2.

Uncovering the Dynamics of Urease and Carbonic Anhydrase Genes in Ureolysis, Carbon Dioxide Hydration, and Calcium Carbonate Precipitation.

The hydration of CO suffers from kinetic inefficiencies that make its natural trapping impractically sluggish. However, CO-fixing carbonic anhydrases (CAs) remarkably accelerate its equilibration by 6 orders of magnitude and are, therefore, "ideal" catalysts. Notably, CA has been detected in ureolytic bacteria, suggesting its potential involvement in microbially induced carbonate precipitation (MICP), yet the dynamics of the urease (Ur) and CA genes remain poorly understood.

Evaluation of Gingival Phenotype in the Early Transitional Dentition Phase in Children-Comparison of Three Non-Invasive Methods.

Gingival phenotype (GP) is determined based on the thickness and width of the gingival tissue. An evaluation of GP is essential for adequate treatment planning and outcome monitoring, including orthodontic treatments in a paediatric population. The present study aimed to compare the reliability of the visual and TRAN methods with that of the ultrasound biometer measurements in the early transitional dentition phase.

The Washout Resistance of Bioactive Root-End Filling Materials.

Fast-setting bioactive cements were developed for the convenience of retrograde fillings during endodontic microsurgery. This in vitro study aimed to investigate the effect of irrigation on the washout of relatively fast-setting materials (Biodentine, EndoCem Zr, and MTA HP) in comparison with MTA Angelus White and IRM in an apicectomy model. Washout resistance was assessed using artificial root ends.

Comment on 'Limitations in evaluating COVID-19 protective face masks using open circuit spirometry systems: respiratory measurement mask introduces bias in breathing pressure and perceived respiratory effort'.

We comment on the paper by Seibt and coworkers (Seibt2023) which investigates whether wearing an additional respiratory measurement mask during open-circuit spirometry assessments (respirometry mask) shows any effect on breathing pressure and perceived respiratory effort when wearing protective face masks commonly worn during the COVID-19 pandemic.

Kinetic and Thermodynamic Enhancement of Low-Temperature Oxygen Release from Strontium Ferrite Perovskites Modified with Ag and CeO.

The redox behavior of the nonstoichiometric perovskite oxide SrFeO modified with Ag, CeO, and Ce was assessed for chemical looping air separation (CLAS) via thermogravimetric analysis and by cyclic release and uptake of O in a packed bed reactor. The results demonstrated that the addition of ∼15 wt % Ag at the surface of SrFeO lowers the temperature of oxygen release in N by ∼60 °C (i.e.

Production of Acetaldehyde via Oxidative Dehydrogenation of Ethanol in a Chemical Looping Setup.

A novel chemical looping (CL) process was demonstrated to produce acetaldehyde (AA) via oxidative dehydrogenation (ODH) of ethanol. Here, the ODH of ethanol takes place in the absence of a gaseous oxygen stream; instead, oxygen is supplied from a metal oxide, an active support for an ODH catalyst. The support material reduces as the reaction takes place and needs to be regenerated in air in a separate step, resulting in a CL process.

Effects of wearing different face masks on cardiopulmonary performance at rest and exercise in a partially double-blinded randomized cross-over study.

The use of face masks became mandatory during SARS-CoV-2 pandemic. Wearing masks may lead to complaints about laboured breathing and stress. The influence of different masks on cardiopulmonary performance was investigated in a partially double-blinded randomized cross-over design.

[Developing intercultural competences for more effective patient care and international medical and research collaborations].

Introduction: In our globalised world, the role of intercultural competence in healthcare is increasing as societies become multicultural. The development of this competence should start in medical education. Objective: In our qualitative study among Hungarian medical students, we sought to find out to what extent the multicultural student composition of our elective course contributes to the development of their intercultural competence.

Alkalizing Properties of Six Calcium-Silicate Endodontic Biomaterials.

Introduction: Calcium silicate-based cements (CSC), are self-setting hydraulic biomaterials widely used for reparative procedures in dentistry and endodontics. These materials possess physical properties, such as ion release, porosity, solubility, and radiopacity. Their biological properties are connected to their alkalizing activity and calcium release capacity.

No inflammatory effects after acute inhalation of barium sulfate particles in human volunteers.

Background: Most threshold limit values are based on animal experiments. Often, the question remains whether these data reflect the situation in humans. As part of a series of investigations in our exposure lab, this study investigates whether the results on the inflammatory effects of particles that have been demonstrated in animal models can be confirmed in acute inhalation studies in humans.

Knowledge of Oral and Physical Manifestations of Anorexia Nervosa Among Polish Dentists: A Cross-Sectional Study.

Anorexia nervosa is a psychosomatic disorder and is commonly associated with impaired oral health. Dentists can play a relevant role in the early diagnosis of anorexia nervosa. With the help of intra- and extraoral examinations and anamnesis, the dentist can detect characteristic signs and symptoms of this eating disorder.

[Accepting cultural differences in the integration of foreign medical students].

Unlabelled: Összefoglaló. Bevezetés: A 21. századra a multikulturális társadalmi közegben az interkulturális tudás, mint készség, fokozott mértékben válik kulcskompetenciává.

Health effects after inhalation of micro- and nano-sized zinc oxide particles in human volunteers.

Inhalation of ZnO particles can cause inflammation of the airways and metal fume fever. It is unclear if different sizes of the particles alter these effects. However, various studies report higher biological activity of other nano-sized particles compared to microparticles.

Implicit bias against the Romas in Hungarian healthcare: taboos or unrevealed areas for health promotion?

The Roma or Gipsy population is the largest ethnic minority both in Europe and Hungary with a 10-15 years lower life expectancy and significantly worse health indicators than majority populations. The purpose of this exploratory study was to investigate a sensitive and controversial topic: the perspectives of healthcare staff about the presence and impacts of implicit bias in the Hungarian healthcare system towards Roma patients. Therefore, between June 2017 and May 2018 semi-structured interviews were conducted involving 13 healthcare professionals.

[Intercultural competence in healthcare].

International migration is a current and growing phenomenon, which has become an increasingly critical issue in Europe since 2013 and this has posed new challenges to the healthcare systems of the European Union (EU). The need for 'culturally competent' healthcare systems that can adapt and respond to the needs of a changing population while taking into account cultural, religious, linguistic and gender diversity, has become more and more an agenda across Europe. Nowadays, it is widely accepted that inequalities in health conditions are mainly due to socio-economic factors, and disparities are particularly evident among certain ethnic and cultural minority groups.

Characterisation of CaCO phases during strain-specific ureolytic precipitation.

Numerous microbial species can selectively precipitate mineral carbonates with enhanced mechanical properties, however, understanding exactly how they achieve this control represents a major challenge in the field of biomineralisation. We have studied microbial induced calcium carbonate (CaCO) precipitation (MICP) in three ureolytic bacterial strains from the Sporosarcina family, including S. newyorkensis, a newly isolated microbe from the deep sea.

[Prejudices and their healthcare implications. Lessons learnt from a national survey].

Introduction: The presence and recognition of prejudice during care were examined among healthcare professionals towards the Roma population, the largest ethnic minority in Hungary. Aim: The aim of this study was to explore the extent to which prejudice in the Hungarian healthcare system might affect the quality of care and, thereby, the health of the Roma patients. Method: Semi-structured interviews were conducted between June 2017 and May 2018 with 13 interviewees.

Heart rate variability and cardiac repolarization after exposure to zinc oxide nanoparticles in healthy adults.

Background: Exposure to airborne zinc oxide (ZnO) particles occurs in many industrial processes, especially in galvanizing and welding. Systemic inflammation after experimental inhalation of ZnO particles has been demonstrated previously, but little is known about the impact on the cardiovascular system, particularly on the autonomic cardiac system and the risk of arrhythmias. In this study we investigated the short-term effects of ZnO nanoparticles on heart rate variability (HRV) and repolarization in healthy adults in a concentration-dependent manner at rest and during exercise in a controlled experimental set-up.

The influence of two forms of chlorhexidine on the accuracy of contemporary electronic apex locators.

Background: Accurate determination of working length (WL) is crucial for the success of endodontic therapy. The aim of this study was to determine the influence of 2% chlorhexidine digluconate solution, 2% chlorhexidine digluconate gel and 2% hypochlorite solution on the accuracy of two devices: the Raypex 5 and the ApexDal.

Methods: Twenty-nine single-rooted human teeth were used in this study.

Airway inflammation after inhalation of nano-sized zinc oxide particles in human volunteers.

Background: Workers in the zinc production and processing of galvanized sheet steel are exposed to a complex mixture of particles and gases, including zinc oxide (ZnO) that can affect human health. We aimed to study the effects of short-term controlled exposure to nano-sized ZnO on airway inflammatory markers in healthy volunteers.

Methods: Sixteen subjects (8 females, 8 men; age 19-42, non-smokers) were exposed to filtered air and ZnO nanoparticles (0.

SEM and EDS study of TotalFill BC Sealer and GuttaFlow Bioseal root canal sealers.

Background: Recently, a new generation of calcium silicate-based root canal sealers has been developed. These new types of sealers have the ability to set in wet environment, have high alkalinity and present potential antimicrobial activity.

Objectives: The aim of this study was to determine the chemical composition and microstructure of 2 novel calcium silicate-containing root canal sealers - TotalFill® BC Sealer and GuttaFlow® Bioseal.

Effectiveness of an on-body lifting aid (HAL® for care support) to reduce lower back muscle activity during repetitive lifting tasks.

The Hybrid Assistive Limb Lumbar Type (HAL) is an active exoskeleton that provides motion according to the wearer's voluntary drive. It was developed to support back muscles during repetitive lifting tasks. The purpose of this paper was to determine if the myoelectric activity of the back muscles is reduced or altered when using the HAL and to investigate a possible influence of its use on the cardiovascular system.