bluuebunny/crossref_metadata_2025_split huggingface dataset:
Do We Still Need a Laboratory to Study Advanced Oxidation Processes? A Review of the Modelling of Radical Reactions used for Water Treatment
Authors: Wacławek Stanisław 
Published: April 2021

Abstract
Environmental pollution due to humankind’s often irresponsible actions has become a serious concern in the last few decades. Numerous contaminants are anthropogenically produced and are being transformed in ecological systems, which creates pollutants with unknown chemical properties and toxicity. Such chemical pathways are usually examined in the laboratory, where hours are often needed to perform proper kinetic experiments and analytical procedures. Due to increased computing power, it becomes easier to use quantum chemistry computation approaches (QCC) for predicting reaction pathways, kinetics, and regioselectivity. This review paper presents QCC for describing the oxidative degradation of contaminants by advanced oxidation processes (AOP, i.e., techniques utilizing •OH for degradation of pollutants). Regioselectivity was discussed based on the Acid Blue 129 compound. Moreover, the forecasting of the mechanism of hydroxyl radical reaction with organic pollutants and the techniques of prediction of degradation kinetics was discussed. The reactions of •OH in various aqueous systems (explicit and implicit solvation) with water matrix constituents were reviewed. For example, possible singlet oxygen formation routes in the AOP systems were proposed. Furthermore, quantum chemical computation was shown to be an excellent tool for solving the controversies present in the field of environmental chemistry, such as the Fenton reaction debate [main species were determined to be: •OH < pH = 2.2 < oxoiron(IV)]. An ongoing discussion on such processes concerning similar reactions, e.g., associated with sulphate radical-based advanced oxidation processes (SR-AOP), could, in the future, be enriched by similar means. It can be concluded that, with the rapid growth of computational power, QCC can replace most of the experimental investigations related to the pollutant’s remediation in the future; at the same time, experiments could be pushed aside for quality assessment only.
An Empirical Study on System Dynamics Model for Sustainable Development of Air Traffic Control Units
Authors: Chen Fang , Chen Xi , Zhang Xinjian 
Published: April 2021

Abstract
With the rapid growth of flight volume, the contradiction between insufficient support capability of air traffic control (ATC) units and large demand for development ultimately hinders their sustainable and safe development. The article aims at the leverage point of the contradiction between supply and demand so as to provide scientific safety policies. Based on the system archetype “growth and underinvestment”, from the perspective of the feedback relationships between support capability, safety, and development, the causality of the dynamic factors of control, communication, navigation, and surveillance, as well as meteorology and information subsystems was studied. Then, a system dynamics model for the sustainable and safe development of ATC units was established. Taking the Tianjin ATC sub-bureau as an example, policy suggestions for sustainable and safe development were put forward according to the scenario simulation results.
Sensitivity of quinoa cv. ‘Titicaca’ to low salinity conditions
Authors: Rodríguez-Hernández María del Carmen , Morcillo Luna , Garmendia Idoia 
Published: April 2021

Abstract
Quinoa (Chenopodium quinoa Will.) is an annual herbaceous Andean plant. In recent years there is a growing interest on it due to its high quality as food, its wide adaptation to agroecological conditions and resistance to different abiotic stresses. In this work, we evaluate the growth pattern of quinoa plants cv. ‘Titicaca’, subjected to different levels of salinity, focusing on leaf production and nutrient content. In this sense, the results have shown that a high concentration of salinity negatively affects the growth of quinoa plants. In fact, plants grown with 200 mM NaCl reduced the photosynthetic rate and levels of chlorophylls and carotenoids in comparison with the rest of the treatments. Likewise, it has been proven how the progressive increase in salinity has negative effects on transpiration, stomatal conductance and photosynthetic rate, with significant subsequent reductions in shoot biomass, leaf area and nutrient adquisition, but without a decline in leaf dry weight (DW) production. However, the treatment of 200 mM NaCl demonstrated the best results regarding the water-use efficiency, as well as the number of saline glands. According to our results, the quinoa plant cv. ‘Titicaca’ seems to be tolerant to moderate concentrations of salinity (50–100 mM NaCl). This study could serve as a reference on this little known and cultivated species in the Mediterranean region, since it could become an alternative crop in areas with moderate salinity problems.
Increased Caspase-3 Immunoexpression and Morphology Alterations in Oenocytes and Trophocytes of Apis mellifera Larvae Induced by Toxic Secretion of Epormenis cestri
Authors: Viotti María H. , Juri Pablo , Lombide Paula , Presentado María L. , Verdes José M. , Nogueira Enrique , Invernizzi Ciro , Pedrana Graciela 
Published: April 2021

Abstract
Toxic honeydew produced by Flatidae Epormenis cestri in Uruguay has been shown to cause among honeybees (Apis mellifera) colonies a massive larva death called “River disease”, but the intrinsic mechanisms are still unknown. Because fat body cells, oenocytes and trophocytes, are known to regulated larvae metabolism, and to be affected by xenobiotics, we tested whether apoptosis of these cells can be an underlying cause of larvae death. Ten colonies were divided into two groups and fed with common honey or toxic honeydew obtained from colonies affected by “River disease”. Five-dayold larvae were collected and processed for histology and immunohistochemistry for caspase-3. The area, diameter, and immunostaining area in oenocytes and trophocytes were measured. The oenocyte and trophocyte cellular area decreased in the treated group (p=0.002; p<0.001 respectively) compared to the control group. The diameter of oenocytes (p=0.0002) and trophocytes (p<0.0001) decreased in the treated group. Caspase-3 was detected in cytoplasm in the control group but in the cytoplasm and nucleus in the treated group. The caspase-3 immunostaining area increased in oenocytes (p<0.002) and trophocytes (p<0.0001) of the treated group. The ingestion of toxic honeydew altered the morphology, localization and immunoexpression of caspase-3 in fat body cells, which suggests that the deregulation of the apoptotic mechanism affected the normal development in A. mellifera larvae.
Environmental contamination of free-range hen with dioxin
Authors: Mikołajczyk Szczepan , Pajurek Marek , Warenik-Bany Małgorzata , Maszewski Sebastian 
Published: April 2021

Abstract

Introduction
The transfer of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and polychlorinated biphenyls (PCBs) from a contaminated environment into the food chain is a serious consumer safety problem. As part of the Polish National Surveillance Program of PCDD/Fs and PCBs in food of animal origin, a concentration of PCDD/Fs of 4.61 ± 0.75 pg WHO-TEQ/g fat was determined in a sample of free-range eggs, which exceeded the permitted limit of 2.5 pg WHO-TEQ/g. The aim of the study was to investigate the source of the egg contamination and the risk for the eggs’ consumers.

Materials and methods
Eggs, muscles, feed and soil from the place where backyard waste burning had been carried out in the past and ash from a household stove tipped onto the paddock were analysed using the isotope dilution technique with high-resolution gas chromatography coupled with high-resolution mass spectrometry.

Results
The concentration in ash was low at 0.20 pg WHO-TEQ/g and the congener profile did not indicate the source of contamination. The dioxin content in soil from the backyard waste-burning site was 2.53 pg WHO-TEQ/g dry matter (d.m.) and the soil’s profile of PCDD/F congeners matched the profile of the contaminated eggs.

Conclusion
By reason of the congener profile similarity, the investigation concluded, that the cause of the contamination was the backyard waste-burning site soil which the animals had access to. Frequent consumption of contaminated eggs from the analysed farm could pose a health risk due to chronic exposure, especially for vulnerable consumers.
Dismissing class
Authors: Cotal San Martin Vladimir 
Published: April 2021

Abstract
Neoliberal globalisation has expanded transnational corporations’ (TNCs) boundaries of operation and sphere of exploitation, particularly in the Global South where much of the production of traditional TNC manufacturing now occurs. In this article, using a longitudinal approach, I conduct a detailed critical discourse analysis of a large Swedish press corpus reporting on TNC activities in Global South countries. The analysis suggests that the issue of workers’ conditions is made relevant to the Swedish public through a “consumer framework” that not only confers proximity and relevance on the topic, but also effectively recontextualises agency and responsibility towards particular or individual social actors, obscuring the class dimension of labour relations and global production. Moreover, rooted in a highly problematic colonial imagery, exploitation in the Global South is seen as a “cultural problem” of “them” rather than a problem related to the social and spatial relations of global capitalism.
Interpolations of class, “race”, and politics
Authors: Mylonas Yiannis , Noutsou Matina 
Published: April 2021

Abstract
This article focuses on the ways in which the Danish liberal mainstream press covered events related to the so-called Greek crisis. In particular, we examine the coverage of the different Greek national elections that took place during the Greek crisis years (2010–2019) by Jyllands-Posten (JP), a popular Danish daily newspaper. Qualitative content analysis is deployed to study a corpus of 70 news and editorial articles published by JP on the aforementioned topic. Our analysis highlights the existence of three main interrelated themes in JP's constructions of the Greek elections: a moralist, a culturalist, and a technocratic/anti-leftist theme. These themes are theorised through the use of relevant theory on class cultures and politics today.
Investigations of a journalistic blind spot
Authors: Figenschou Tine Ustad , Eide Elisabeth , Einervoll Nilsen Ruth 
Published: April 2021

Abstract
Recent studies argue that the contemporary working class has largely disappeared from the news media. Another strand of literature demonstrates that the traditional labour beat has lost newsroom prestige due to changes in the established news media and crisis in the labour movement. Analysing how traditional working-class sectors are covered in mainstream newspapers and trade union magazines over time, we conduct a systematic, quantitative content analysis of 18 months of coverage from 1996–2017. We find a steady decline in media coverage throughout the period, indicating that the labour beat as an established specialisation is disappearing. Studying topical emphasis and source practices demonstrates marked differences between the newspapers and the trade union magazines: The mainstream newspapers are elite- and conflict-oriented (although not hostile in their coverage), while the trade union magazines largely reflect power structures and the interests of the labour movement. In the discussion, the main findings from the content analysis are explained by practitioners, to contextualise and provide insider perspectives on the findings.
All in a day's work
Authors: Iantorno Michael , Blamey Courtney , Dwyer Lyne , Consalvo Mia 
Published: April 2021

Abstract
Class depictions in videogames are prevalent, yet understudied. In this article, we analyse how the working class – particularly working-class men – have been depicted in videogames over the past 30 years. In doing so, we bring together a class- and gender-based analysis to study how narratives, representations, gameplay, and game systems construct the “working-class hero” as a central protagonist. This is done by examining eight paired examples of videogames that feature working-class characters in central roles, including janitor, fire-fighter, taxi driver, and bartender. Our analysis finds that some roles are glorified (such as firefighters), positioning their protagonists in direct conflict with white-collar settings and antagonists. However, many other roles task players with “doing their job” in the face of repetitive (and sometimes outlandish) working conditions. Through these examples, we document the portrayal of working-class videogame heroes, noting how videogames can both reinforce and subvert common media tropes.
The space of media usage in Finland, 2007 and 2018
Authors: Purhonen Semi , Leguina Adrian , Heikkilä Riie 
Published: April 2021

Abstract
In Nordic countries and beyond, there exists a lack of longitudinal, population-level research focused on sociopolitical polarisation and the proliferation of new online activities in the context of changing media usage. In this article, we examine media usage in Finland in 2007 and 2018. We use two nationally representative surveys (N = 1,388 in 2007 and N = 1,425 in 2018) to make comparisons over time and include a wide set of media usage indicators. Applying multiple correspondence analysis, we assess the impact of the proliferation of online activities on the structure of the space of media usage and examine whether the association between media usage and sociopolitical divisions has become more sharply pronounced. The results suggest stability of the structure of media use rather than dramatic change. We discuss these results by reflecting on the relatively strong persistence of “traditional” models of stratification in digital cultural consumption and media practices.
Improved understanding of Sodium hydroxide concentration role and kinetic model of cryolite reactive extraction in cathode Spent Pot Linings
Authors: Tropenauer Blaž , Klinar Dušan , Golob Janvit 
Published: April 2021

Abstract
Spent Pot Lining (SPL) cathode pot, waste from the aluminium smelting process needs detoxification from cyanides, washing out water-soluble salts and extraction of the cryolite (Na3AlF6) decomposition products to be recycled. Revealed cryolite decomposition mechanism with NaOH opens possibilities to explore its critical role in the reactive extraction process. Common Na+ ion from NaOH hinders the solubility of the product but also drives mass transfer to the reaction site. Reaction mass balance provides adequate liquid to solid ratio (L/S) and NaOH concentration range. A newly developed kinetic model based on Whitman film theory and NaOH mass flow enables prediction of the reaction time to decompose cryolite to a low enough level. Results show that the internal particle resistance to transport (1/ks) is 19 times larger than the external (1/kl) one and governs the whole process.
The Role of Carotid Stenosis in a Prediction of Prognosis of Coronary Artery Disease
Authors: Jordanova Savetka Paljoskovska , Kedev Sasko , Spirova Danica Petkoska , Stojanovska Lily , Bosevski Marijan 
Published: April 2021

Abstract

Aims: The aim of this paper is to indicate if carotid stenosis is predictive for the prognosis of coronary artery disease.

Method and materials: Our study is a prospective cohort study. 1031 patients with proven coronary artery disease (CAD) were recruited consecutively. Carotid ultrasound was used to assess IMT, plaque, or stenosis. They were followed for 24 months for adverse cardiovascular events. Selected demographic date such as smoking history, dyslipidemia, hypertension, laboratory values, and clinical data (associated diseases and risk) were collected from each patient. Total cardiovascular events and mortality rate were followed up for the study population. The results were collected prospectively and retrospectively. The study was organized as a clinical, cross-sectional study and comparative study.
From the data collected with the clinical research, a file was formed in the statistical program with the help of which the data were statistically analyzed.
From the methods of descriptive statistics, absolute frequencies, percentages, arithmetic mean, median, measures of variability, minimum, maximum, standard deviation and logistic regression models were used.

Result: Of the total number of patients 1026 had arterial hypertension (HTA). Data on hyperlipidemia (HLP) had been reported in 895 patients. 1.023 patients had peripheral artery disease (PAB). 1031 patients were presented with multivessel coronary artery disease (CAD). There were 1,029 patients with diabetes mellitus (DM), while 1,013 patients had coronary artery by-pass (CABG), and 1,012 had stroke (CVI). Elevated systolic blood pressure was reported in 966 patients. 184 patients had elevated triglycerides and 187 had elevated cholesterol. 1,008 patients have had a history of myocardial infarction. Carotid artery stenosis (CAS) has been found in 1,009 patients, increased body mass index (BMI) in 270 patients.
1.031 patients were followed for 24 months. Cardiovascular events were reported in 54 patients (or 5.2%). Revascularization was performed in 28 (4.1%) patients, while 12 (1.8%) of patients died. Diabetes mellitus (OR 1.878 95% CI 0.491 7.184) and Carotid stenosis (OR 2.185 95% CI 0.731 6.53) were found to be predictive factors for future cardiovascular events.

Conclusion: Due to our results carotid ultrasound may be a useful tool for risk stratification of coronary artery disease pts.
Recurrent Severe Hepatitis of Autoimmune Origin
Authors: Krstevski Gregor , Ivanova Viktorija Caloska , Andreevski Vladimir , Serafimovski Vladimir 
Published: April 2021

Abstract
The autoimmune liver disease constituent conditions include autoimmune hepatitis, primary biliary cholangitis, primary sclerosing cholangitis and IgG-4 associated cholangitis. They remain a diagnostic challenge to the practicing physician due to their close resemblance in clinical course, and laboratory and imaging findings to the vast array of other etiologies of liver injury. We report a case of recurrent severe hepatitis of autoimmune origin in a female patient. The disease course was marked by initial onset at age 39, followed by nearly four years of remission, and a second flare with a more exaggerated severity. Systemic lupus erythematosus was initially deemed as the culprit, however formal diagnostic criteria were not fulfilled and the serological findings were not reproduced at a later date. With the aim of ascertaining the underlying process, the patient underwent an extensive array of testing with regards to infectious, genetic, systemic and autoimmune disease. Positive anti-dsDNA (double stranded DNA) and an antinuclear antibody titer of 1:160 provided the strongest support for an autoimmune etiology, specifically autoimmune hepatitis or possibly an overlap syndrome. An excellent outcome was achieved via treatment with corticosteroids, ursodeoxycholic acid and plasmapheresis.
Brachial Plexus Injuries – Review of the Anatomy and the Treatment Options
Authors: Pejkova Sofija , Filipce Venko , Peev Igor , Nikolovska Bisera , Jovanoski Tomislav , Georgieva Gordana , Srbov Blagoja 
Published: April 2021

Abstract
Brachial plexus injuries are still challenging for every surgeon taking part in treating patients with BPI. Injuries of the brachial plexus can be divided into injuries of the upper trunk, extended upper trunk, injuries of the lower trunk and swinging hand where all of the roots are involved in this type of the injury. Brachial plexus can be divided in five anatomical sections from its roots to its terminal branches: roots, trunks, division, cords and terminal branches. Brachial plexus ends up as five terminal branches, responsible for upper limb innervation, musculocutaneous, median nerve, axillary nerve, radial and ulnar nerve. According to the findings from the preoperative investigation combined with clinically found functional deficit, the type of BPI will be confirmed and that is going to determine which surgical procedure, from variety of them (neurolysis, nerve graft, neurotization, arthrodesis, tendon transfer, free muscle transfer, bionic reconstruction) is appropriate for treating the patient.
Platlet-Rich Plasma – Review of Literature
Authors: Nikolovska Bisera , Miladinova Daniela , Pejkova Sofija , Trajkova Andrijana , Georgieva Gordana , Jovanoski Tomislav , Jovanovska Katerina 
Published: April 2021

AbstractWound healing is a dynamic and physiological process for restoring the normal architecture and functionality of damaged tissue. Platelet-rich plasma (PRP) is an autologous whole blood product that contains a large number of platelets in a small volume of plasma with complete set of coagulation factors, which are in physiological concentrations. PRP has haemostatic, adhesive properties and acts supraphysiologically in the process of wound healing and osteogenesis. Platelets play a very important role in the wound healing process by providing growth factors that enhance the rate and quality of wound healing by many different mechanisms. The aim of this review is to describe: the biology of platelets and their role in the wound healing process, the terminology of platelet rich products, PRP preparation, activation and concentration of PRP, as well as the use of PRP in plastic surgery.
Endolymphatic Sac Surgery And Posterior Semicircular Canal Fenestration For Meniere’s Disease
Authors: Filipche Ilija S. , Chakar Marina Davcheva , Filipche Venko , Javari Sijavash 
Published: April 2021

Abstract

Objective: To evaluate the efficiency and safety of the simultaneous endolymphatic sac drainage (ELSD) and posterior semicircular canal fenestration (PSCF) primary on the vestibular function as an new therapeutic strategy in the patients with medically refractory Meniere’s disease (MD).

Study Design: retrospective follow-up study.

Setting: University Clinic of Otolaryngology.

Methods: Twenty-six patients with MD with severe vertigo and disability who underwent ELSD and PSCF in the same time in the period of 1988 and 2007 were reviewed. The main outcome measures were frequency of vertigo, functional disability according the guidelines for diagnosis and evaluation of therapy in MD. The canal paresis was evaluated by caloric test. The degree of reduced vestibular response rates as an indicators of the vestibular function were compared before and after surgery.

Results: The preoperative audition was already altered in all cases except in 8 patients who had no significant changes in hearing threshold. The mean value of vertigo attacks before operation was 8.6. After 3 years of surgery only one patient (3.8%) had one vertigo attack. Functional level was highly ameliorated except in two patients who presented functional level 2 or B in the late postoperative period. The mean caloric testing duration after 3 years postoperatively showed that the 50% of the patients approaching the normal results.

Conclusion: Based on the results of simultaneous endolymphatic sac surgery and posterior canal fenestration, they are effective methods for treatment of the refractory Meniere’s disease. Endolymphatic sac surgery enables drainage of endolymphatic fluid and the fenestration of the posterior semicircular canal enables the distension or dilatation of the membranous canal in the decompressed perilymphatic space across the perilymphatic leak at the level of the new fenestra, and, so, appearing of certain decrease of the endolymphatic pressure. Both techniques at the same time decrease the pressure in the case of the endolymphatic hydrops.