The Influence of the Teachers' Scientific Field on the Effects of the Application of ICT in Higher Education Institutions.

Modern information and communication technologies have intensively reformed the teaching process in higher education, expanding new opportunities for learning and access to educational resources, compared to those used in traditional learning. Taking into account the specifics of the application of these technologies in different scientific disciplines, the aim of this paper is to analyse the impact of the teachers' scientific field on the effects of the application of these technologies in selected higher education institutions. The research included teachers from 10 faculties and three schools of applied studies, who provided answers to 20 survey questions. After the survey and statistically processed results, the attitude of teachers from different scientific fields to the effects of the implementation of these technologies in selected higher education institutions was analysed. In addition, the forms of application of ICT in the conditions during the Covid 19 pandemic were analysed. The obtained results indicate various effects, as well as certain shortcomings, in the implementation of these technologies in the analysed higher education institutions, provided by teachers that belong to various scientific fields.

Application of Polyacrylic Hydrogel in Durability and Reduction of Environmental Impacts of Concrete through ANN.

While adding superabsorbent polymer hydrogel particles to fresh concrete admixtures, they act as internal curing agents that absorb and then release large amounts of water and reduce self-desiccation and volumetric shrinkage of cement that finally result in hardened concrete with increased durability and strength. The entrainment of microscopic air bubbles in the concrete paste can substantially improve the resistance of concrete. When the volume and distribution of entrained air are adequately managed, the microstructure is protected from the pressure produced by freezing water. This study addresses the design and application of hydrogel nanoparticles as internal curing agents in concrete, as well as new findings on crucial hydrogel-ion interactions. When mixed into concrete, hydrogel particles produce their stored water to power the curing reaction, resulting in less volumetric shrinkage and cracking and thereby prolonging the service life of concrete. The mechanical and swelling performance qualities of the hydrogel are very sensitive to multivalent cations found naturally in concrete mixes, such as aluminum and calcium. The interactions between hydrogel nanoparticles and alkaline cementitious mixes are described in this study, while emphasizing how the chemical structure and shape of the hydrogel particles regulate swelling behavior and internal curing efficiency to eliminate voids in the admixture. Moreover, in this study, an artificial neural network (ANN) was utilized to precisely and quickly analyze the test results of the compressive strength and durability of concrete. The addition of multivalent cations reduced swelling capacity and changed swelling kinetics, resulting in fast deswelling behavior and the creation of a mechanically stiff shell in certain hydrogel compositions. Notably, when hydrogel particles were added to a mixture, they reduced shrinkage while encouraged the creation of particular inorganic phases within the void area formerly held by the swelled particle.

Improving the Self-Healing of Cementitious Materials with a Hydrogel System.

Despite cement's superior performance and inexpensive cost compared to other industrial materials, crack development remains a persistent problem in concrete. Given the comparatively low tensile strength, when cracks emerge, a pathway is created for gas and water to enter the cementitious matrix, resulting in steel reinforcement corrosion which compromises the durability of concrete. Superabsorbent hydrogels have been developed as a novel material for enhancing the characteristics of cementitious materials in which they have been demonstrated to decrease autogenous shrinkage and encourage self-healing. This study will detail the design and application of polyelectrolyte hydrogel particles as internal curing agents in concrete and provide new findings on relevant hydrogel-ion interactions. When hydrogel particles are mixed into concrete, they generate their stored water to fuel the curing reaction that results in less cracking and shrinkage, thereby prolonging the service life of the concrete. The interaction of hydrogels with cementitious materials is addressed in this study; the effect of hydrogels on the characteristics and self-healing of cementitious materials was also studied. Incorporating hydrogel particles into cement decreased mixture shrinkage while increasing the production of particular inorganic phases within the vacuum region formerly supplied by the swollen particle. In addition, considering the control paste, cement pastes containing hydrogels exhibited less autogenous shrinkage. The influence of hydrogels on autogenous shrinkage was found to be chemically dependent; the hydrogel with a delayed desorption rate displayed significantly low shrinkage in cement paste.

Optimization of a plastic optical fiber based sensor for dye sensing coupled with an adapted neuro-fuzzy inference system.

In this study, estimation capacities and optimization of a dye concentration sensing model by an adapted neuro-fuzzy inference system (ANFIS) as well as central composite design coupled with response surface methodology using a plastic optical fiber (POF) based sensor were investigated. Various diameters d of POF were used for sensing different concentrations of Remazol Black B (RBB), which acts as a sensing medium of the process. The efficiency of sensing was studied as a function of three independent variables: diameter of POF, concentration of RBB dye, and initial temperature of the solution. First, the independent parameters were fed as inputs to an ANFIS, and the output of the system was the output intensity of dye ratio to output the intensity of distilled water. ANFIS showed that this established model is reliable for a dye concentration sensing process and is mainly influenced by its diameter.

Adaptive neuro fuzzy selection of important factors for prediction of plasmons in silver nanorods.

The major goal of this study was to find predictors of plasmon positions in silver nanorod (NR) optical absorption spectra. The goal of this study is to use an adaptive neural fuzzy inference system to identify the various input parameters for longitudinal surface plasmon resonance (LSPR) and transverse surface plasmon resonance (TSP). A seed strategy has been used for preparation of the silver NRs. During the preparation, the seed particles are synthesized in the presence of cetyltrimethylammonium bromide (CTAB). To produce the silver NRs, metal salt (AgNO3) has been added, as well as ascorbic acid (AA) and CTAB. Skillful prediction could play a pivotal role in the plasmon NR production management. The combination of CTAB and the seeds has the largest influence on the TSPR. The combination of CTAB and AA has the largest influence on the LSPR. The study considering different input parameters simultaneously, to the best of our knowledge, is the first on a small scale and should attract great general interest.

Hangings in Newfoundland and Labrador: A 40-year retrospective analysis of medical examiner data.

A comprehensive review of medical examiner data was undertaken of all hanging deaths in the Canadian Maritime province of Newfoundland and Labrador from 1982 to 2021. A total of 811 cases were identified representing suicidal, accidental, and undetermined manners of death. Variables examined included age; sex; seasonality; ligature type; location; time since death; prior attempts/suicidal ideation; presence/absence of a suicide note; and presence/absence of alcohol and drugs. Data subsets were generated, and additional analysis was conducted for hangings involving females; suicidal hangings occurring in the region of Labrador; and those who hanged themselves outdoors. Results indicate that females are choosing to kill themselves by hanging in rapidly increasing numbers. Outdoor suicides by hanging were more common in Newfoundland and Labrador (22.1%) than previously reported in Alberta (11.5%), Texas (5%), and Turkey (12-13%). Unique trends in seasonality were revealed, as were repeated incidents of suicidal clusters. The age distribution was skewed strongly toward youths (10 to 22 years of age), particularly in Labrador. Although Labrador represents only 5% of the total provincial population, it produced 20.1% of the total suicidal hangings in the study. The suicide rate in Canada has decreased by 24% over the past 40 years, yet the rates of suicidal hangings nationally and in Newfoundland and Labrador have increased during the same time period. With a better understanding of the circumstances under which people commit suicide by hanging within the province, it may be possible to target at-risk groups to prevent future cases.

New cases of human dirofilariosis on the Balkan Peninsula - "Masked intruders" uncovered by a surgeon.

Dirofilaria spp. nematodes are accidental parasites of humans causing mild to serious, superficial or visceral infections. Superficial dirofilariosis is rather common in Europe and is typically manifested as subcutaneous form. Herein we report 46 new cases of human dirofilariosis (19 patients with subcutaneous, 18 patients with ocular, 4 patients wih genital, 2 patients with submucosal, 2 patients with pulmonary and 1 patient with intramuscular form of infection) that were recorded from the beginning of 2015 to May 2021 on the Balkan Peninsula with a goal to update the prevalence of this parasitosis and point out potential problems in diagnosis and treatment. Besides, given the high possibility of misinterpretation as tumor, our second aim was to encourage the inclusion of this pathogen in the differential diagnosis of subcutaneous nodules. Although quite common forms, subcutaneous and ocular dirofilariosis can be very often misdiagnosed in clinical practice due to the absence of specific clinical manifestations. Therefore, raising awareness of clinicians about this zoonosis is needed as well as closer collaboration between physicians and veterinarians.

Human development index in a context of human development: Review on the western Balkans countries.

INTRODUCTION: The Human Development Index (HDI), as one of the more complex composite indicators of the level of human potential and quality of life, is a combination of three dimensions (indicators, factors): life expectancy at birth, the middle number of years of education and the expected number of years of schooling combined into a single education index and economic benefits expressed by production, or GDP (gross domestic product) according to purchasing power (PPP US $). METHODS: The same measures and average achievements in the field of health, education, and living standards are presented. The HDI was first developed in 1990 under the United Nations Development Program (UNDP) and is published as Human Development Reports (HDR). At present, it has become the most widely used complex indicator suitable for international comparisons and assessments of the achieved development level of a particular country or region. RESULTS: The paper deals specifically with the more perspective view of human development in the Western Balkans, with a series of socio-economic implications for the development policy of the countries under observation. CONCLUSION: The particular significance of the conducted research stems from the fact that in the countries of the Western Balkans are identified factors at the beginning of the transition period were often marginalized in the creation of macroeconomic policies, but in recent years there have been more positive developments in that regard.

An unusual primary malignant tumor of the stomach: fetal gutlike gastric adenocarcinoma with "blastoma"-like component.

An unusual case of a polypoid, malignant gastric tumor in a 62-year-old man is presented. Endoscopy and subsequent polypectomy revealed an 8.5 × 6.5 × 4.5-cm lesion in the body of the stomach. Microscopy showed surface dysplasia with an invasive adenocarcinoma displaying prominent tubulopapillary areas composed of large vacuolated cells, pleomorphic nuclei, and occasional cytoplasmic hyaline globules. This component then blended with tubular structures lined by more primitive-appearing vacuolated cells embedded within a stroma made up of cellular primitive, high-grade blastemalike areas and less cellular, more pleomorphic foci with spindle and several bizarre, large cells. Immunohistochemistry showed the adenocarcinoma and primitive tubules to be strongly SALL4 and epithelial marker positive but with only focal expression of α-fetoprotein and glypican-3. The stromal component made up of blastemalike areas displayed strong immunoreactivity for glypican-3. The pleomorphic stromal areas were negative for all markers, including epithelial and muscle markers. The overall morphology and expression of primitive oncofetal proteins, especially SALL4 and glypican-3, are in keeping with this being a primitive adenocarcinoma showing fetal gutlike differentiation with an accompanying blastomalike component, a combination not previously described in a primary gastric cancer.

[Risk and causes of gastroesophageal bleeding in patients with liver cirrhosis].

BACKGROUND/AIM: Variceal bleeding is the most life-threating complication in liver cirrhosis. The aim of this study was to analyze the sources of gastroesophageal bleeding in patients with liver cirrhosis and to ascertain the risk factors of bleeding from esophageal varices. METHODS: This prospective study included 52 patients with liver cirrhosis and portal hypertension. Severity of liver dysfunction according to Child's classification, coagulation parameters, and endoscopic findings were analyzed. In patients with varices we analyzed the size, color, location of varices, and the presence of red signs. The varices were classified as small, medium and large. RESULTS: Esophageal varices were found in 76.9% of the patients. Isolated varices were present in 36.6%, and associated with other findings in 40.3%. Small varices were present in 10%, medium in 25% and large in 65% patients. Of them 55% had variceal bleeding. Variceal bleeding was present in 50% of the patients with medium and in 65.38% of the patients with large varices. There was no bleeding in the patients with small varices. Endoscopy revealed red signs before bleeding in 85% of the patients with large varices. There was a higher incidence of variceal bleeding in the Child's group B. There were no significant differences (p > 0.05) in the coagulation parameters in patients with and without variceal bleeding. Rebleeding was present in 86.36% of the patients. Most of them (52.63%) were rebleeding between 7 weeks and 12 months after the first episode of variceal bleeding. In the patients with the most severe hepatocellular dysfunction (Child's group C) the period between the first bleeding and rebleeding was the shortest (mean, 20.8 days). CONCLUSION: Our study revealed that esophageal varices are the most frequent sources of bleeding in the patients with liver cirrhosis. There is the association between the first bleeding and large varices and the red signs. Coagulation disorders and hepatic dysfunction were not related to the initial episode of variceal bleeding. The risk of early rebleeding was higher in the patients with severe hepatic dysfunction (Child's class C).

[Manifestations of hemorrhagic fever with renal syndrome in a military unit stationed in a combat zone]. / Pojava hemoragijske groznice sa bubreznim sindromom u vojnickom kolektivu stacioniranom u zoni borbenih dejstava.

Since it has been recognized as a separate disease during the Korean war, hemorrhagic fever with renal syndrome (HFRS) has often been discovered among the members of different armies in various countries, military personnel being the highest risk group for the disease. In the period from March to May 1999 we treated 6 soldiers coming from the military formation stationed at Kosovo and Metohia. The reaction of indirect hemagglutination test proved the presence of antibodies against Hantavira in each of them. They were infected during the stay in a dugout in the area with great population of field rodents. Only one patient was slightly ill, on the admission to the hospital. The others had severe clinical and laboratory findings: several days lasting fever, strong abdominal pain, as well as the pain in the loins, dyspeptical discomfort, manifold increased blood urea nitrogen and serum creatinine values, thrombocytopenia, etc. Oliguria occurred in 4 patients. Hemorrhagic manifestations were slight (epistaxis, petechial rash, conjunctival injection), or absent. Because of the aggravation of the acute renal failure, hemodialysis was performed in 3 patients, while other 3 underwent conservative treatment. Two of the patients had severe anemia because of which transfusions of erythrocytes and plasma were performed. Complications occurred in 2 patients (convulsive crises and lung infections). All patients recovered completely.