bluuebunny/crossref_metadata_2025 huggingface dataset:
Early markers of pathological left ventricular remodeling in patients after ST-elevation myocardial infarction according to speckle-tracking echocardiography
Authors: Oleinikov V. E. , Golubeva A. V. , Galimskaya V. A. , Babina A. V. , Donetskaya N. A.
Published: July 2022

Aim. To assess early predictors of pathological remodeling in patients after ST-elevation myocardial infarction (STEMI) using speckle-tracking echocardiography (STE).

Material and methods. The study included 114 STEMI patients aged 52 (44; 58) years. A two-dimensional echocardiography was performed with the analysis of standard parameters and STE with an analysis of strain and rotational characteristics of the myocardium. In addition, brain natriuretic peptide and troponin-I concentration was determined. The development of pathological post-infarction remodeling within 12-month follow-up was assessed as an end point. Depending on the outcome, 2 groups were formed: group 1 — patients with pathological remodeling (PR), n=45 (39,5%), group 2 — patients without PR, n=69 (60,5%).

Results. Early remodeling was detected in 24 (53,3%) people, mid-term — in 15 (33,4%), and late remodeling — in 6 (13,3%). In the PR group, heart failure (HF) was detected in 100% of patients, while in non-PR group, 23 (33,3%) patients had no signs of HF.

In the early period of myocardial infarction, each of following indicators with high sensitivity and specificity predicts postinfarction pathological dilatation: global longitudinal strain (GLS) <11,7%, global circular strain (GCS) <12,4%, and a Twist decrease to 7,8o. A multivariate logistic regression model was created for the formation of pathological remodeling in patients with STEMI, which included GLS, global radial deformation (GRS), end-systolic volume index (ESVI), determined on days 7-9 of STEMI.

Conclusion. GLS, GCS, and left ventricular Twist are independent highly sensitive and specific predictors of pathological remodeling. The following early predictors of postinfarction pathological dilatation have been established: reduced GLS  in combination with higher GRS and left ventricular ESVI.
Role of ergoreflex activity in the pathogenesis of heart failure. The effectiveness of physical rehabilitation
Authors: Lelyavina T. A. , Sitnikova M. Yu. , Galenko V. L. , Bortsova M. A.
Published: July 2022

Aim. To assess the change in ergoreflex activity in heart failure patients with reduced left ventricular systolic function in the study of the effectiveness of physical training (PT) with original regimen, compared with PT with conventionally estimated regimen.

Material and methods. Single-center open-label study of 297 patients with class III HF. The patients were divided into two groups: main group (MG) — patients, in whom the PT intensity was estimated based on lactate threshold (LT); comparison group (CG), in whom the PT intensity was estimated based on 60% VO2peak. We analyzed ergoreflex activity, the relationship of ergoreflex with exercise tolerance (ET), routine systemic inflammation markers, clinical manifestations of HF, and ET based on VO2peak.

Results. An increase in gait velocity at the LT level after 3 months of PT was registered in 94% (n=210) of the MG patients. After 3 months, the PT regimen was recalculated according to 60% VO2реак; an increase in gait velocity at this level after 3 months of PT was registered in 70% of CG patients (n=35). The severity of HF decreased in both groups, but the dynamics was more pronounced in the MG, where class II was achieved by 75% of patients (in CG — 44%, p=0,003). In the MG, to a greater extent than in the CG, the ET increased. Ergoreflex activity (according to ΔVE) decreased by ≥15% in 230 (97%) MG patients and in 31 (63%) patients with CG. After the completion of the PT period, when in some patients the HF severity decreased to class II, we revealed a direct association of the ergoreflex value (according to ΔVE) with a greater severity of HF (r=-0,57, p=0,01) and the relationship between the decrease in ergoreflex activity (according to ΔVE), an increase in VO2LT (r=-0,55, p=0,001), VO2peak (r=0,49, p=0,001), a decrease in monocyte count (r=0,63, p=0,01).

Conclusion. In stable patients with class III HF receiving the proper disease-modifying therapy, ergoreflex activity is increased and is associated with functional class, ET, and systemic inflammation activity. In the course of physical rehabilitation, a decrease in ergoreflex activity is accompanied by a decrease in functional class, an increase in EF, which is more pronounced with personalized aerobic exercise using LT regimen assessment.
Electrocardiographic, echocardiographic and lipid parameters in predicting obstructive coronary artery disease in patients with non-ST elevation acute coronary syndrome
Authors: Tsivanyuk M. M. , Geltser B. I. , Shakhgeldyan K. I. , Emtseva E. D. , Zavalin G. S. , Shekunova O. I.
Published: July 2022

Aim. To assess the predictive potential of electrocardiographic (ECG), echocardiographic, and lipid parameters for predicting obstructive coronary artery disease (oCAD) in patients with non-ST-elevation acute coronary syndrome (NSTE-ACS) prior to invasive coronary angiography (CA).

Material and methods. This prospective observational cohort study included 525 patients with NSTE-ACS with a median age of 62 years who underwent invasive coronary angiography. Two groups were distinguished, the first of which consisted of 351 (67%) patients with oCAD (stenosis 50%), and the second — 174 (33%) without oCAD (<50%). Clinical and functional status of patients before CAG was assessed by 40 indicators. Mann-Whitney, Fisher, chi-squared, univariate logistic regression (LR) methods were used for data processing and analysis, while miltivariate LR (MLR), gradient boosting (XGBoost) and artificial neural networks (ANN) were used to develop predictive models. The quality of the models was assessed using 4 following metrics: area under the ROC curve (AUC), sensitivity (Se), specificity (Sp), and accuracy (Ac).

Results. A comprehensive analysis of ECG, echocardiography and lipid profile parameters made it possible to identify factors that had linear and non-linear association with oCAD. LR were used to determine their weight coefficients and threshold values with the highest predictive potential. The quality metrics of the best predictive algorithm based on MLR were 0,81 for AUC, 0,74 for Sp and Ac, and 0,75 for Se. The predictors of this model were 4 categorical parameters (left ventricular (LV) ejection fraction of 42-60%, global LV longitudinal systolic strain <19%, low-density lipoprotein cholesterol >3,5 mmol/l, age >55 years in men and >65 years for women).

Conclusion. The prognostic model developed on the basis of MLR made it possible to verify oCAD with high accuracy in patients with NSTE-ACS before invasive CA. Models based on XGBoost and ANN had less predictive value.
Lipoprotein(a) concentration and the blood content of INFγ-producing T-helpers 17 (Th17/1) in males with premature coronary artery disease
Authors: Filatova A. Yu. , Afanasieva O. I. , Arefieva T. I. , Klesareva E. A. , Tyurina A. V. , Ezhov M. V. , Pokrovsky S. N.
Published: July 2022

Aim. To analyze the relationship of blood lipid profile parameters, including the level of lipoprotein(a) (Lp(a)), and the content of circulating CD4+ T-lymphocytes with premature coronary artery disease (CAD).

Material and methods. This retrospective cross-sectional study included 76 men aged 40 to 79 years. Patients were divided into following groups: main group — patients with CAD (58 [54;64] years, n=56) onset before the age of 55; control group — patients (62 [57;66] years, n=20) without CAD and obstructive CAD and peripheral arterial disease. Statins were taken by 51 (91%) and 9 (45%) patients in the main and control groups, respectively. In serum and plasma samples, lipid spectrum parameters and Lp(a) concentration were determined. Cellular phenotyping was performed by direct immunofluorescence in a culture of mononuclear leukocytes isolated from blood. To determine cytokines, cells were in vitro activated with inhibitor of intracellular transport of secretory proteins. Cell fluorescence was determined using flow cytometry.

Results. Patients of both groups were comparable in age, body mass index, prevalence of hypertension and diabetes. Blood Lp(a) concentrations were higher in the CAD group than in the control group (49 [10;102] mg/dL vs 12 [4,3;32] mg/ dL, p<0,05). The content of INFγ-producing T-helpers 17 (Th17/1) was also higher in the CAD group (19 [15;24] vs 13 [11;22], % of Th17, p=0,05). Logistic regression revealed that elevated Lp(a) levels (≥30 mg/dL) and relative amounts of Th17/1 (>14% of Th17) independently of each other, atherogenic lipoprotein cholesterol levels, classical risk factors, and statin use were associated with premature CAD in the general group of patients with odds ratio (OR) of 4,6 (95% confidence interval (CI), 1,1-20,2) and 10,9 (2,1-56,7), p<0,05, respectively. The combination of Lp(a) >30 mg/dl and Th17/1 over 14% significantly increased the risk of premature CAD (OR, 28,0, 95% CI, 4,31-181,75, p=0,0005).

Conclusion. We have shown for the first time that an increased Lp(a) concentration with an increased Th17/1 content is associated with the premature CAD in men.
Oxidative and antioxidant changes in blood of young people with premature coronary artery disease and abdominal obesity
Authors: Polonskaya Ya. V. , Kashtanova E. V. , Stakhneva E. M. , Shramko V. S. , Sadovsky E. V. , Stryukova E. V. , Ragino Yu. I.
Published: July 2022

Aim. To study the oxidative and antioxidant blood profile in young people with premature coronary artery disease (CAD) and abdominal obesity (AO).

Material and methods. The study included 169 people. The main group consisted of 47 patients diagnosed with premature (<45 years of age) CAD, while 22 of them with AO and 25 without AO. The control group included 122 people without CAD, comparable with the main group in sex, age and body mass index. Among them, there are 67 people with AO and 55 people without AO. In all examined patients, the blood levels of total cholesterol, triglycerides, high-density lipoprotein cholesterol, MDA-modified oxidized high-density lipoprotein, superoxide dismutase (SOD), glutathione peroxidase 1, and whole blood total antioxidant capacity (TAC) were determined. Statistical processing was carried out in the SPSS 13.0 program.

Results. The blood TAC was 2,3 times lower in persons with CAD than in those without CAD, and amounted to 1,58 mmol of trolox. The blood level of SOD in patients with CAD was 1,16 times higher than in the group of people without CAD. The relative odds of premature CAD were associated with decreased TAC (B=-2,855; Exp(B)=0,058; 95% confidence interval (CI), 0,008-0,392; p=0,004) and increased level of SOD (B=0,105; Exp(B)=1,076; 95% CI, 1,031-1,196; p=0,006), regardless of sex, age, risk factors. Conclusion. Thus, an increased SOD and reduced TAC can be potential biomarkers for premature CAD in people under 45 years of age.
Prognostic value of subclinical atherosclerosis in patients with a SCORE risk <5%: data from a 10-year follow-up
Authors: Smirnova M. D. , Pogorelova O. A. , Fofanova T. V. , Svirida O. N. , Blankova Z. N. , Tripoten M. I. , Tamaeva B. M. , Yarovaya E. B. , Ageev F. T. , Balakhonova T. V.
Published: July 2022

Aim. To evaluate the contribution of subclinical atherosclerosis to the stratification of patients with a SCORE risk of cardiovascular events (CVEs) <5% based on a 10-year follow-up.

Material and methods. The study included 379 patients with SCORE risk of CVEs <5% (82 men, 297 women). In 2009, all patients underwent clinical examination, carotid artery (CA) ultrasound with the detection of plaques, total CA occlusion, intima-media thickness (IMT) of the common carotid artery (CCA). The plaque number was determined as the total number of all plaques in 6 following segments: both CCAs, both CCA bifurcations and both internal carotid arteries. The total stenosis was calculated as the sum of stenoses in 6 CA segments in %. In 2019, a telephone survey of patients was conducted with a questionnaire assessing the following CVEs: all-cause death, cardiovascular death, myocardial infarction (MI), stroke, myocardial revascularization, cardiovascular hospitalizations, and composite endpoint.

Results. The initial patients’ age ranged from 35 to 67 years (51,1±7,5 years). Plaques from 20% to 50% were detected in 303 participants (79,94%). Over the past 10 years, there have been 5 cardiovascular deaths (1,3%), 7 MIs (1,8%), 5 cases of unstable angina (1,3%), 12 cases of myocardial revascularization (3,2%), 15 strokes (4,0%), 51 cardiovascular hospitalizations (13,5%). The proportion of patients with registered endpoints (CVE+) was 22,4% (n=85). The groups of patients with and without CVEs differed in the level of systolic blood pressure (BP) and blood triglycerides, and did not differ in the level of diastolic BP, lipid profile, glucose, heart rate, smoking status, sex, and age. In the CVE+ group, there were higher values of CCA IMT (0,65 (0,64; 0,70) mm vs 0,62 (0,62; 0,66) mm, p<0,05), total CA stenosis (102,5 (88,1; 120,8)% vs 80 (72,5; 88,1)%, p=0,01), and the CA plaque amount (4,0 (2,8; 3,9) vs 3,0 (2,6; 3,1), p=0,01), respectively. Total CA stenosis was an independent predictor of CVEs when adjusted for sex, age, systolic and diastolic BP (β=0,149; p<0,05), but not for lipid profile. A ROC-analysis revealed a cut-off point for total CA stenosis of 82,5% (AUC=0,598, 95% confidence interval 0,5243-0,673, p<0,05).

Conclusion. The total CA stenosis has shown itself to be an independent predictor of CVEs in patients with a SCORE risk <5%.
New SARS-CoV-2 Omicron variant — clinical picture, treatment, prevention (literature review)
Authors: Vechorko V. I. , Averkov O. V. , Zimin A. A.
Published: July 2022

Despite the decrease in the incidence rate, today the problem of a coronavirus disease 2019 (COVID-19) remains relevant on a global scale. Among the Severe Acute Respiratory Syndrome CoronaVirus 2 (SARS-CoV-2) variants, the Omicron is currently dominant. The differentiating properties of the Omicron variant are a shorter incubation period (1-5 days), high contagiousness, and a relatively mild course of the disease, which is associated with the highest number of genome mutations among all SARS-CoV-2 variants. The new variant is characterized by upper respiratory tract symptoms: rhinorrhea, severe sore throat, sneezing, less commonly cough, headache, and weakness. Oral antiviral drugs Paxlovid and Molnupiravir are effective for treating mild to moderate COVID-19, including in outpatients. While corticosteroids and interleukin-6 receptor antagonists are still effective in treating patients with moderate to severe COVID-19, the effectiveness of anti-SARS-CoV-2 monoclonal antibodies has not yet been fully proven. Vaccination, especially booster doses, against SARS-CoV-2 is the most effective method of preventing COVID-19. The review purpose was to analyze the literature to determine the key aspects of prevention, clinical picture and treatment of a new SARSCoV-2 Omicron variant. The work used publications for the period from November 2021 to February 25, 2022, dedicated to the prevention, diagnosis and treatment of COVID-19 caused by the Omicron variant from the following databases: PubMed, eLibrary, MedRxiv, Google Scholar. The following key words were used: “Omicron”, “SARS CoV-2”, “COVID-19”, “Omicron treatment”. The analysis showed that COVID-19 caused by the Omicron variant is characterized by a relatively mild course. However, due to high contagiousness, this variant poses a significant problem due to the excessive load on outpatient and inpatient healthcare, including intensive care units.
Advantages of long-term combination pharmacotherapy with a beta-blocker and eplerenone in patients with ST-segment elevation acute coronary syndrome
Authors: Osipova O. A. , Mikhin V. P. , Golovin A. I. , Belousova O. N. , Perutsky D. N. , Alferov P. K. , Konstantinov S. L.
Published: July 2022

Aim.To conduct a comparative analysis of the effect of long-term pharmacotherapy (12 months) using a β-blocker (nebivolol) and its combination with eplerenone in patients after ST-segment elevation acute coronary syndrome (STE-ACS) with heart failure with mildly reduced ejection fraction (EF) (HFmrEF) on the structural and functional cardiac parameters.

Material and methods. We examined 130 patients with STE-ACS and HFmrEF after successful myocardial revascularization by percutaneous coronary intervention. The mean age of patients was 53,6 [46;57] years. Ten patients withdrew from the study due to personal reasons. Subsequently, patients were randomly divided into 2 treatment groups as follows: 60 patients received nebivolol; 60 patients received nebivolol and eplerenone. Patients were examined at two stages: 1st day of the disease before PCI and 12 months later. All patients underwent a clinical examination, echocardiography, followed by assessment of left ventricular (LV) EF, LV end-diastolic volume index (EDVI), LV endsystolic volume index (ESVI), LV myocardial index (LVMI), LV wall motion score index (WMSI), the ratio of peak early diastolic flow over peak late diastolic flow (E/A), the ratio of early diastolic transmitral flow velocity to the mitral annular velocity (E/e´).

Results.Twelve-month pharmacotherapy with nebivolol in patients after STE-ACS showed an increase in LVEF by 7,2% (p<0,05), a decrease in WMSI by 13,0% (p<0,05), an increase in the E/A ratio by 11,1% (р<0,05), decrease in the E/e’ ratio by 7,2% (р<0,05). LV EDVI increased by 4,6% (p>0,05). Twelve-month combined pharmacotherapy with nebivolol and eplerenone showed an increase in LVEF by 16,0% (p<0,01), a decrease in LV ESVI by 17,9% (p<0,05), and a decrease in WMSI by 26,7% (p<0,01), LVMI — by 23,8% (р<0,01). At the same time, LV EDVI decreased by 0,7% (p>0,05). The E/A ratio increased significantly by 22,2% (<0,01), E/e’ decreased by 29,6% (р<0,01). Comparative analysis also found that combination therapy had a more pronounced positive effect on LVEF (p<0,05), ESVI (p<0,05), WMSI (p<0,05), LVMI (p<0,01), as well as diastolic function in the form of a significant increase in E/A (p<0,05) and E/e’ (p<0,01), which recovered to normal values.

Conclusion.The advantages of long-term combination pharmacotherapy of nebivolol and eplerenone in HFmrEF patients after STE-ACS on both structural and functional cardiac parameters were established.
Association of humoral immunity status and thrombodynamics after vaccination with Gam-COVID-Vac and CoviVac
Authors: Drapkina O. M. , Berns S. A. , Gorshkov A. Yu. , Ryzhakova L. N. , Ivanova A. A. , Emelyanov A. V. , Voinova S. N. , Karateev R. A. , Arablinskiy N. A. , Rodionova A. A. , Bashnyak V. S. , Pokrovskaya M. S.
Published: July 2022

The ongoing pandemic of coronavirus disease 2019 makes it important to study the immunogenicity, the duration of immune response, and the safety of existing vaccines.

Aim. As part of a prospective observational study, to assess associations between levels of anti-Severe Acute Respiratory Syndrome CoronaVirus 2 (SARS-CoV-2) S protein IgG antibodies and thrombodynamics parameters in individuals vaccinated with Gam-COVID-Vac and CoviVac vaccines.

Material and methods. The study included 137 people who completed the first 3 visits: 30 people received the Gam-COVID-Vac, 107 people — CoviVac. The study participants underwent venous blood sampling before the introduction of the 1st and 2nd vaccine doses, as well as 42 days after the administration of 1st dose in order to quantify the level of IgG antibodies. At each visit, plasma hemostasis parameters were analyzed using a thrombodynamics test.

Results. During the follow-up period, there was a clear increase in the level of anti-SARS-CoV-2 S protein IgG antibodies in both groups. At the same time, this increase over time was significantly greater in Gam-COVID-Vac group. There was no correlation detected between thrombodynamics test results and the levels of anti-SARS-CoV-2 S protein IgG antibodies.

Conclusion. The data obtained demonstrate the ability of both vaccines to stimulate the production of anti-SARS-CoV-2 antibodies. However, immune response to Gam-COVID-Vac is much higher. The lack of correlation between thrombodynamics and the level of specific antibodies suggests that vaccination for COVID-19 with Gam-COVIDVac and CoviVac does not cause changes in plasma hemostasis and does not increase the risk of thrombosis.
Russian-language publication activity of medical researchers in during the COVID-19 pandemic: “post-COVID-19 syndrome”
Authors: Kim O. T. , Drapkina O. M. , Rodionova Yu. V.
Published: July 2022

Aim. To study the dynamics and pattern of publications in Russian on post-COVID-19 syndrome (PCS) in order to assess the completeness of information and identify medical specialties with its most active investigation in Russia.

Material and methods. The search for publications was carried out in the database of the largest digital scientific library in Russia Elibrary.ru from February 1, 2021 to February 1, 2022. The study included publicly available medical publications on the consequences of coronavirus disease 2019 (COVID-19) in Russian. Publications were classified according to subject matter, study design, and evidence hierarchy. The data obtained is reflected using integers, percentages and graphs.

Results. The study included 478 publications, of which 196 (41%) presented data from original studies, while 269 (56,3%) reflected the results of existing sources. Expert community documents accounted for 2,7%. In terms of study design, most of original studies described case series (37,2%) and individual case reports (22,4%). Casecontrol studies accounted for 20,4%, cross-sectional studies — 8,7%, prospective cohort studies — 3,6%, randomized clinical trials — 1,5%, and systematic reviews — 1%. In addition, 5,1% of publications were devoted to preclinical studies, mathematical models and various methodological aspects. By topic, the largest number of publications noted cardiovascular (12,2%) and neurological manifestations of PCS (12,2%). Furthermore, 23,5% of publications described the course of PCS in specific groups of patients, particular issues of COVID-19 consequences, and healthcare management problems. We also revealed that 11,7% of publications were devoted to general rehabilitation, 71% — to imaging diagnostics, 5,6% — to herd immunity to the Severe Acute Respiratory Syndrome CoronaVirus 2 (SARSCoV-2), and 5,6% — to PCS features in children. The smallest number of publications considered mental (5,1%), gastroenterological (4,6%), pharmacological (4,6%), rheumatological (4%) and pulmonological aspects of PCS.

Conclusion. The dynamics and pattern of publications on COVID-19 in Russian are generally consistent with global trends and reflect the natural consequences of the pandemic. This analysis of publications on PCS showed that the most in-demand specializations in this filed are cardiology, neurology, and rehabilitation.
The rise and fall of live online music event consumption during the pandemic: an analysis from the perspective of practice theory
Authors: Ferreira Frederico Leocádio , Christino Juliana Maria Magalhães , Cardoso Laura de Oliveira , Noronha Ana Luíza Silva
Published: July 2022

Abstract The phenomenon of watching live online music events became popular during the COVID-19 pandemic as a leisure activity practiced at home while social distancing. For 3 months, they were part of the routine of Brazilians and foreigners, before exponentially losing their audience. This trajectory is the object of research for this paper, studied under the prism of practice theory to understand the elements that form this consumption practice, its synchrony with other everyday practices, and external phenomena that act in the consolidation (or not) of a practice. In-depth interviews were conducted with 24 practitioners, and the results were analyzed through a thematic analysis. The findings provide clues as to why the practice declined, emphasizing the overlapping of practices belonging to the routine created during social distancing and the reduction of the initial originality (understanding) of more intimate lives that get lost in the search for innovations in practice. Possible developments in the future of post-pandemic live events and theoretical and managerial contributions are also discussed.
Práticas de consumo incertas em um futuro incerto
Authors: LIMA VITOR M. , PESSÔA LUÍS A. , BELK RUSSELL W.
Published: July 2022

Resumo Esta edição especial do Cadernos EBAPE.BR buscou provocar uma reflexão focada em práticas de consumo incertas em um futuro incerto. Enquanto pesquisas anteriores de marketing e consumo têm explorado práticas de consumo circunscritas em um contexto institucionalizado, conhecido e mais ou menos previsível, o conjunto de artigos aprovados nesta edição revela nuances diferentes. De relatos experienciais de luto ao papel da música no enfrentamento do isolamento e da sobreposição de papéis sociais, os artigos publicados podem nos ajudar a refletir sobre o que podemos fazer juntos, como sociedade, para enfrentar os desafios trazidos pela COVID-19, não apenas em nível local, mas também globalmente.
CAPACIDAD Y MADUREZ EN PROSPECTIVA PARA ORGANIZACIONES INTENSIVAS EN CONOCIMIENTO
Authors: Vásquez Javier Enrique Medina , Pazos Leonardo Solarte , Arias Luis Felipe Sánchez
Published: July 2022

RESUMEN El artículo desarrolla una perspectiva de madurez para la construcción de capacidades en prospectiva para organizaciones intensivas en conocimiento (OIC), característicamente inmersas en exigentes dinámicas de generación y uso de conocimiento, necesario para elaborar visiones integrales y estudiar el futuro. Se propone una matriz de madurez estructurada en cinco dimensiones: personas; sofisticación de métodos, plataformas e infraestructuras; complejidad de las áreas de aplicación; estructura organizacional; e impacto en el entorno. Descritas en cinco niveles de madurez que dan cuenta de un avance gradual en las capacidades organizacionales, constituyen una lógica evolutiva operativamente articulada en procesos, proyectos y ciclos de trabajo. La matriz resultante, construida conceptualmente en consideración de otras propuestas, orienta el diseño y estabilización de sistemas prospectivos conformando una base para la acumulación de curvas de aprendizaje organizacional. Un caso de aplicación en una OIC pública aporta evidencia de su utilidad y aplicabilidad en la construcción de capacidades prospectivas.
PRÁTICAS RESPONSÁVEIS REFORÇAM O COMPROMETIMENTO ORGANIZACIONAL DOS EMPREGADOS? UM ESTUDO DAS EMPRESAS TÊXTEIS BRASILEIRAS
Authors: Queiroz Giselle Cavalcante , Abreu Mônica Cavalcanti Sá de , Rebouças Sílvia Maria Dias Pedro
Published: July 2022

RESUMO Este artigo oferece uma avaliação dos efeitos da percepção dos empregados a respeito das práticas de Responsabilidade Social Corporativa (RSC) sobre o Comprometimento Organizacional (CO) nas empresas têxteis de uma região relevante para a produção têxtil na América Latina (Estado do Ceará, Brasil). Trata-se de uma pesquisa quantitativa, que utiliza métodos de análise fatorial exploratória e confirmatória e modelos de equações estruturais para identificar os efeitos das práticas de RSC sobre o CO, realizada com 539 empregados de três empresas diferentes. Os resultados mostram que as práticas de RSC orientadas para os empregados, clientes, fornecedores e governo têm um impacto positivo no comprometimento afetivo/normativo, enquanto as práticas de RSC para a sociedade e o meio ambiente têm um impacto negativo. As práticas de RSC voltadas aos empregados também afetam seu comprometimento instrumental, mas práticas de RSC com outros focos não tiveram a mesma influência. Os resultados mostram ainda que as grandes empresas têxteis tendem a adotar mais práticas de RSC, influenciando mais significativamente o comprometimento de seus empregados.
DO RESPONSIBLE PRACTICES ENHANCE EMPLOYEE ORGANIZATIONAL COMMITMENT? A STUDY OF BRAZILIAN TEXTILE COMPANIES
Authors: Queiroz Giselle Cavalcante , Abreu Mônica Cavalcanti Sá de , Rebouças Sílvia Maria Dias Pedro
Published: July 2022

ABSTRACT This paper assesses the effects of employee perception of corporative social responsibility (CSR) practices on organizational commitment (OC) in textile companies located in the Brazilian state of Ceará - a relevant region for the textile industry in Latin America. The research used a survey to collect data from 539 employees working in three companies, adopting a quantitative approach based on structural equation modeling. The results show that CSR practices geared toward employees, clients, suppliers, and government positively impacted affective/normative commitment, whereas CSR practices geared toward society and the environment impacted commitment negatively. Also, CSR practices focused on employees affected their continuance commitment, while CSR practices focused on other stakeholders did not present the same impact. Finally, the findings show that large textile companies tend to adopt more CSR practices, which significantly influences employee commitment.
SUSTAINABLE HUMAN RESOURCE MANAGEMENT PRACTICES AND THE IMPACTS ON ORGANIZATIONAL COMMITMENT
Authors: Genari Denise , Macke Janaina
Published: July 2022

ABSTRACT This paper aims to identify the impact of sustainable human resource management (SHRM) practices on organizational commitment (OC). The study used a sample of 290 employees linked to six companies classified in the Bovespa Sustainability Index. The research hypotheses were tested based on a structural model, using the structural equation modeling (SEM) technique. The results show that SHRM practices are represented by three dimensions: attraction and retention of professionals, maintaining healthy and motivated professionals, and developing the skills of professionals. These practices have a significant and positive impact on affective commitment (AC) and normative commitment (NC). Besides, the AC stands out as a partial mediator of the relationship between SHRM practices and NC.
PRÁTICAS DE GESTÃO SUSTENTÁVEL DE RECURSOS HUMANOS E OS IMPACTOS NO COMPROMETIMENTO ORGANIZACIONAL
Authors: Genari Denise , Macke Janaina
Published: July 2022

RESUMO O objetivo deste artigo é identificar o impacto das práticas de gestão sustentável de recursos humanos (GSRH) no comprometimento organizacional (CO). O estudo utilizou uma amostra de 290 funcionários vinculados a seis empresas classificadas no Índice de Sustentabilidade Empresarial da Bovespa. As hipóteses de pesquisa foram testadas com base em um modelo estrutural, utilizando a técnica de modelagem de equações estruturais (MEE). Os resultados mostram que as práticas de GSRH são representadas por três dimensões: atração e retenção de profissionais, manutenção de profissionais saudáveis e motivados e desenvolvimento de competências dos profissionais. Essas práticas têm um impacto significativo e positivo no comprometimento afetivo (CA) e no comprometimento normativo (CN). Além disso, o CA se destaca como um mediador parcial da relação entre as práticas de GSRH e o CN.
The Importance of Hydrogen for Brazil: a source of clean energy and a path to the production of nitrogen fertilizers
Authors: Asencios Yvan Jesus Olortiga
Published: July 2022

Hydrogen is the lightest chemical element in the periodic table, with a high calorific value, much higher than that of methane, gasoline, diesel, and methanol. Its combustion releases a large amount of energy and water as a product. The major part of the world’s production of hydrogen comes from natural gas, through Synthesis Gas production, which can also be produced from alternative renewable sources or even water. Synthesis gas is an intermediate product of great importance for the industry, as it is possible to produce hydrogen from it, but, among other products, ammonia is one of the most important products as is used mainly to produce fertilizers. This paper resume the importance of syngas and hydrogen, its ways of production, classifications, scientific production around the world in this field, and their relation to the current economical problems such as food shortages and energy crisis specifically in Brazil.
A Comprehensive Framework for Learning Declarative Action Models
Authors: Aineto Diego , Jiménez Sergio , Onaindia Eva
Published: July 2022

A declarative action model is a compact representation of the state transitions of dynamic systems that generalizes over world objects. The specification of declarative action models is often a complex hand-crafted task. In this paper we formulate declarative action models via state constraints, and present the learning of such models as a combinatorial search. The comprehensive framework presented here allows us to connect the learning of declarative action models to well-known problem solving tasks. In addition, our framework allows us to characterize the existing work in the literature according to four dimensions: (1) the target action models, in terms of the state transitions they define; (2) the available learning examples; (3) the functions used to guide the learning process, and to evaluate the quality of the learned action models; (4) the learning algorithm. Last, the paper lists relevant successful applications of the learning of declarative actions models and discusses some open challenges with the aim of encouraging future research work.
Calculation of gamma-ray buildup factors for some medical materials
Authors: Celen Yonca Yahsi , Sarihan Mucize , Almisned Ghada , Tekin Huseyin Ozan , Ekmekçi Ismail
Published: July 2022

In recent years, novel materials with protective qualities against ionizing radiation have been discovered. Important concepts include the continued use of X-rays for diagnosis and treatment, particularly in the radiological energy range, as well as the calculation of the radiation attenuation properties of such materials, the buildup factor and the attenuation coefficients. Radiation shielding is characterized by parameters such as the linear attenuation coefficient (cm−1), equivalent atomic number (Zeq), exposure buildup factor (EBF) and exposure absorption buildup factor (EABF). Radiation is often employed in the diagnosis and treatment of cancer and accurate calculation of the absorbed dosage during radiation treatment, which is one of the most popular cancer treatments. It relies on accurate modeling of the radiation beams administered to the patient and their interaction with the environment in which they are absorbed. In this research, the shielding characteristics of water, fat and bone related to human tissue are investigated. Using the Phy-X/PSD software, the equivalent atomic number (Zeq), EBF and EABF were determined.
Energy pile skin friction at interface in clays under temperature cycles
Authors: Maghsoodi S. , Cuisinier O.
Published: July 2022

In energy geostructures, the long-term shaft resistance is affected by cyclic thermo-mechanical loads associated with structural loads and cyclic thermal solicitations. This study aims to investigate the effect of monotonic and cyclic thermal loads on normally consolidated (NC) and overconsolidated (OC) kaolin clay–rough steel interface. The peak shear stress of interface increased with temperature while the critical state shear strength remained unchanged. For cyclic temperature tests, with applying ten temperature cycles (5–60°C) to NC kaolin–clay interface, significant thermal contraction was observed but the shear strength increased as much as one single heating test. NC interface contracted on heating whereas OC samples dilated. These results highlighted the impact of thermal cycles on clayey interface which was stress history dependent.
Efficient approaches to autogenous and autonomous self-healing concrete: a review
Authors: Abavisani Iman , Rezaifar Omid , Kheyroddin Ali
Published: July 2022

Concrete and cementitious composites have far been the main and most widely used construction materials throughout the world due to their outstanding features, such as high structural properties, accessibility and relatively low production costs. However, these materials are prone to degradation caused either by automatic cracking or external excitations, which leads to structural degradation. The increasing concern for maintaining safety and enhancing durability of cement composite structures has led to the development of several smart self-healing techniques by researchers. Regarding the diversity of these methods, this study aims to provide a comprehensive review of state-of-the-art technologies in self-healing concrete. For this purpose, the methods are divided into two general categories: autogenous and autonomous self-healing, each of which are subdivided into different methods. The basic principles and influencing factors as well as the main advantages and challenges of these techniques are discussed. Finally, general conclusions are drawn and some suggestions for future advances are presented.
Social Prestige of a Scientific and Pedagogical Specialists in Russia and Europe: Paradoxes of Subjective Perception of the Profession
Authors: Efimova Galina , Gribovskiy Mikhail , Sorokin Alexander
Published: July 2022

The article presents an assessment of the level of social prestige of the academic profession in Russia and European countries. In literature a thesis about the crisis of academic profession in prevail. The empirical part of the study is based on the results of in-depth interviews with academic staff in Europe (45 informants, 2016–2019) and Russia (120 informants, 2019–2021).  Informants from European universities note the high prestige of the profession, but aslo point out its decrease from the end of the 20th to the beginning of the 21st century. One of the reasons is the ignorance of society about the professional activities of scientific and pedagogical workers and their official duties, which are much broader than the transfer of knowledge to students. In addition, socio-economic factors, insufficient funding for higher education, multitasking and multidisciplinary functions of academic workers, consumer attitude of students to the educational process were named as reasons for the decline in prestige.  In opposite to foreign colleagues, Russian informants has noted the increase in the prestige of the profession in recent years. At the same time, this trend does not apply to all scientific and pedagogical staff, but only to those who meet high qualification requirements. Informants from Russian universities note a positive and respectful perception of the academic profession, both by the general public and by the social environment.
Spatial development sustainability of Siberia and the Russian Far East Regions
Authors:   Institute for Demographic Research – Branch of the Federal Center of Theoretical and Applied Sociology of the Russian Academy of Sciences, Fomin Maxim , Smirnov Oleg ,   Institute for Demographic Research – Branch of the Federal Center of Theoretical and Applied Sociology of the Russian Academy of Sciences
Published: July 2022

The article proposes an original methodology for assessing the stability of the spatial development of the regions of Siberia and the Far East of Russia through the prism of the component of the triad of sustainable development. The results of the calculation of the Index of Sustainability of Spatial Development of Regions (SPR) are presented. On the basis of the Index all regions were divided into 3 groups: Priority – “sustainable”; Functioning – “stable”; Problem – “unstable”. The assumption is formulated that, due to the differentiation of natural landscapes - from comfortable to absolutely unfavorable, multiplied by the variable severity of the climate - extensive territorial development is not required for the spatial development of a number of subjects of the Siberian and Far Eastern federal districts. Renovation of the network of outposts and infrastructure, a selective policy for the development of settlements, the shift method (with a minimally sufficient set of social functions) will bring a much greater effect. The importance of the transition from the redistribution of resources to the redistribution of opportunities and equalization of the investment attractiveness of the regions of Siberia and the Far East (the creation of conditions attractive for the growth of capitalization of territories and, accordingly, improving livelihoods and sustainability) is emphasized. From a practical point of view, the results of the study can be used in variant scenario planning of the spatial development of the country's regions.
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Nursing research in Brazil: the client with arterial hypertension or at risk
Authors: Cruz Isabel Cristina Fonseca da
Published: July 2022

Uncontrolled high blood pressure is a major public health problem in Brazil, particularly among African-Brazilian people. Despite the advances related to the prevention and control of the disease, many clients are still suffering with the morbity or the mortality of the arterial hipertension and others present the risk factors related to cardiovascular diseases.