bluuebunny/crossref_metadata_2025_split huggingface dataset:
The motives of South African farmers for offering agri-tourism
Authors: van Zyl Christelle Charlien , van der Merwe Peet 
Published: September 2021

Abstract
Agri-tourism, which involves tourists visiting working farms for entertainment and learning, has become more popular over the years. This paper focuses on the supply side of agri-tourism and investigates the motives that South African farmers have for offering agri-tourism activities and attractions on their farm. Based on a study with 557 respondents from all nine provinces of South Africa, 148 respondents indicated that they were currently offering some form of agri-tourism. The results identified the most popular agri-tourism activities and attractions as farm stay/accommodation, hunting, hiking/nature trails, and wildlife viewing and photography. An exploratory factor analysis was conducted, which identified two factors, namely, preservation of culture and heritage and economic advantages. Based on the mean values, economic advantages were the main reason why farmers decided to offer agri-tourism activities and attractions.
Between Life, the Curve and the Hammer Blow: Family, Poverty and Abandonment in the Time of COVID-19 in Lima, Peru
Authors: Rojas Luis Alberto Suarez 
Published: September 2021

Abstract
The COVID-19 pandemic brought anxiety, contagion and death to Peru, which registered 288,477 cases after the first 100 days of the outbreak, leading to a state of emergency. The quarantine measures and mobility restrictions characterized as the “hammer blow” produced significant impacts on the most vulnerable and poor populations across the country. While the Peruvian government implemented a subsidy that augmented social welfare programs, unfortunately many poor families and independent workers were left out. The resulting impact of COVID-19 and the quarantine measures has exacerbated existing inequalities in Peruvian society, particularly along the lines of gender and class. This article uses extensive survey and other data from the city of Lima to analyze the social experience of the pandemic from the perspective of the family, the impact of the pandemic on the domestic economy and household management, and finally the dilemmas of care and routines within families.
Pathogenic Politics: Authoritarianism, Inequality, and Capitalism in the COVID-19 Crisis
Authors: Powers Theodore , Rayner Jeremy 
Published: September 2021

Abstract
We provide an introduction to this special issue on the politics of the COVID-19 pandemic, presenting some of the key findings and central arguments of the articles collected herein, and discussing their significance in relation to the broader political context of the pandemic. We address the roles of necropolitics and “necrosecurity”, pointing to their relationships to colonial and eugenicist histories, as well as some of the ways in which a globally-ascendant authoritarian populism contributed to the often-disastrous mismanagement of the pandemic. We consider how unequal structures of social and public obligation were reproduced to the detriment of lives and livelihoods, and the challenges facing institutions of protection, care, and social reproduction. Finally, we consider some of the ways in which the pandemic may have opened up avenues for more systemic transformations—for good or for ill.
Herausforderungen der Pflegesituation in Pandemiezeiten
Authors: Westerfellhaus Andreas 
Published: September 2021

Zusammenfassung
Die Auswirkungen der Corona-Pandemie sind für den Pflegesektor deutlich spürbar und stellen eine große Herausforderung dar. Zeit, um nach über einem Jahr Pandemie, ein Zwischenfazit für die zu Pflegenden und die Pflegekräfte in Deutschland zu ziehen.
Prävention von Gewalt in der Pflege: das Projekt PEKo
Authors: Blättner Beate , Meyer Gabriele , Balzer Katrin , Köpke Sascha 
Published: September 2021

Zusammenfassung
Gewalt in der Pflege kann gegen Pflegende oder gegen Pflegebedürftige bzw. Patient*innen gerichtet sein. Es gibt keine robust untersuchten Präventionsansätze. In einem Konsortium aus vier pflege- bzw. gesundheitswissenchaftlichen Standorten wird eine komplexe Intervention durchgeführt und evaluiert. Die Intervention folgt einem partizipativen Ansatz. Nach einer ersten Projektphase in stationären Altenpflegeeinrichtungen erfolgt eine Ausweitung auf die Settings Krankenhaus und ambulante Pflege.
Präventionspotenziale bei älteren pflegebedürftigen Menschen im häuslichen Setting
Authors: Stiefler Susanne , Seibert Kathrin , Domhoff Dominik , Peschke Dirk 
Published: September 2021

Zusammenfassung
Für den Wunsch vieler Menschen, auch bei Pflegebedürftigkeit lange im eigenen Zuhause zu leben, ist das Kennen von Einflussfaktoren für einen Heimeinzug von Bedeutung. Wissen zu diesen Faktoren kann zur Vermeidung, Verzögerung oder angemessene Gestaltung eines Heimeinzugs beitragen. Präventive Maßnahmen, die die kognitive und funktionale Gesundheit oder die Unterstützung von pflegenden Angehörigen adressieren, können den Verbleib in der eigenen Häuslichkeit unterstützen. Innovative Technologien bieten zudem neue Möglichkeiten der Prävention.
Advanced Practice Nursing zur Gesundheitsförderung und Prävention
Authors: Büker Christa , Latteck Änne-Dörte 
Published: September 2021

Zusammenfassung
Die Gesunderhaltung der Bevölkerung durch Public Health-Maßnahmen gehört international zu den längst üblichen Aufgaben der professionellen Pflege. Voraussetzung ist in der Regel eine pflegerische Qualifikation auf Master-Ebene entsprechend dem Advanced Practice Nursing (APN). In Deutschland steht diese Entwicklung erst am Anfang. Verschiedene Handlungsfelder der Gesundheitsförderung und Prävention könnten von entsprechend qualifizierten Pflegefachpersonen übernommen werden. Um die Herausforderungen der Gesundheitsversorgung in Deutschland in Zukunft bewältigen zu können, sollte das Potential einer wissenschaftlich fundierten Pflege stärker genutzt werden.
Der Pflegeberuf und die Corona-Krise in arbeitsrechtlicher Hinsicht
Authors: Möller Peter Michael 
Published: September 2021

Zusammenfassung
Der Arbeitgeber darf Veränderungen an Arbeitszeiten, Dienstplänen sowie der Dienst- und Führungsstruktur seines Unternehmens anordnen. Dies ist jedoch gerichtlich überprüfbar. Arbeitgeber und Betriebsarzt müssen besonders in der Pandemie arbeitsmedizinische Vorsorge gewährleisten. Aber es gibt keinen Impfzwang. Ein erforderlichenfalls mit Vorzügen und Boni verknüpftes Impfangebot ist zulässig. Konfliktvermeidung in Zeiten des „Pflegexits“ sollte Leitbild auf beiden Seiten der Tarifparteien sein.
Situation der hochschulischen Pflegeausbildung in Deutschland
Authors: Gräske Johannes , Lademann Julia , Strupeit Steve 
Published: September 2021

Zusammenfassung
Es wurden Pflegestudiengänge gemäß Pflegeberufegesetz an Mitgliedshochschulen der Bundesdekanekonferenz Pflegewissenschaft Anfang 2021 zu ihren Strukturen befragt. Zusammenfassend gaben die 18 teilnehmenden Studiengänge Einschränkungen in der Auslastung, praktischen Studienphase und Personalbesetzung an. Eine akademische Pflegeausbildung bedarf gesetzlicher Rahmenbedingungen, die eine auskömmliche Finanzierung und ein professionelles Weiterentwickeln des Berufsbildes ermöglichen.
Partizipation von Pflegefachpersonen in Technikauswahl und -einführung
Authors: Klawunn Ronny , Dierks Marie-Luise , Krückeberg Jörn , Hechtel Nicole 
Published: September 2021

Zusammenfassung
Im BMBF-geförderten Pflegepraxiszentrum Hannover werden in der Medizinischen Hochschule Hannover technische Produkte erprobt und eingeführt mit dem Ziel, Pflegefachpersonen zu entlasten und die Versorgung von Patientinnen und Patienten zu verbessern. Um Produkte auszuwählen, die auf die Bedürfnisse von Pflegefachpersonen zugeschnitten sind, wurde ein partizipatives Einführungskonzept entwickelt. Dieses Konzept und erste Erfahrungen werden in diesem Beitrag vorgestellt und diskutiert.
Swelling and kinetic investigations of basic blue-3 sorption by polyacrylamide/Gum Arabic hybrid hydrogel in aqueous medium
Authors: Uzma  , Alam Sultan , Subhan Hanif , Shah Luqman Ali , Khattak Noor Saeed 
Published: September 2021

Abstract
Removal of noxious dyes from waste water is highly desirable for the safety of humans, aquatic life and natural environment. The issue was addressed in the present work by one pot fabrication of polyacrylamide/Gum Arabic (pAAm/GA) composite hydrogel which was applied as sorbent for basic blue-3 (BB3) eradication. The synthesis of the material was confirmed by scanning electron microscopy (SEM), Fourier Transformed Infrared (FTIR) spectroscopy and thermo gravimetric analysis (TGA). Besides, the same techniques also evidenced BB3 uptake by the hydrogel. In distilled water, the swelling capacities of the hydrogel was investigated at pH 7 and the nature of water diffusion into the hydrogel was probed from the resultant data. The composite hydrogel reached equilibrium point in 24 h after which no appreciable water absorption occurred. The adsorption of BB3 by the hybrid material was comprehensively investigated which involved the effect of contact time, temperature and pH on the sorption capacity of the hybrid sorbent. The obtained data fitted well into pseudo second order kinetic model and the adsorption took place in three consecutive kinetic phases. Moreover, sorption thermodynamics revealed non spontaneous and endothermic nature of BB3 sorption accompanied with increase in degree of order.
How Li diffusion in spinel Li[Ni1/2Mn3/2]O4 is seen with μ
±SR
Authors: Sugiyama Jun , Ohishi Kazuki , Forslund Ola Kenji , Månsson Martin , Cottrell Stephen P. , Hillier Adrian D. , Ishida Katsuhiko 
Published: September 2021

Abstract
The diffusive behavior in a spinel-type Li+ ion battery material, Li[Ni1/2Mn3/2]O4, has been studied with positive and negative muon spin rotation and relaxation (μ
±SR) measurements in the temperature range between 200 and 400 K using a powder sample. The implanted μ
+ locates at an interstitial site near O2− ion so as to form a O–H like bond, while the implanted μ
− is mainly captured by an oxygen nucleus, resulting in the formation of muonic oxygen. This means that local magnetic environments in Li[Ni1/2Mn3/2]O4 were investigated from the two different sites in the lattice, i.e., one is an interstitial site for μ
+SR and the other is an oxygen site for μ
−SR. Since both μ
+SR and μ
−SR detected an increase in the fluctuation rate of a nuclear magnetic field for temperatures above 200 K, the origin of this increase is clearly confirmed as Li diffusion. Assuming a random walk process with the hopping of thermally activated Li+ between a regular Li site and the nearest neighboring vacant octahedral sites, a self-diffusion coefficient of Li+ was found to range above 10−11 cm2/s at temperatures above 250 K with an activation energy of about 0.06 eV.
РІВНЯННЯ ТЕПЛООБМІНУ ПРИ ТЕЧІЇ НЕНЬЮТОНІВСЬКИХ РІДИН У КАНАЛАХ ТЕХНОЛОГІЧНОГО ОБЛАДНАННЯ
Authors: В. Білецький Едуард , М. Рищенко Ігор , В. Петренко Олена , П. Семенюк Дмитро 
Published: September 2021

Розглянуто процеси теплообміну у каналах технологічного обладнання з навколишнім середовищем у випадках, які є найбільш розповсюдженими в машинах та апаратах хімічної та харчової промисловості. У першому випадку зовнішнє середовище вважається нескінченним тепловим резервуаром із заданою температурою. У другому випадку роль зовнішнього середовища виконує канал, у якому рухається теплоносій, при цьому температура теплоносія не вважатися заданою і змінюється уздовж довжини каналу. У рівняння теплообміну входять конвективні доданки та доданки з теплопровідністю при цьому теплообмін у каналі з неньютонівською рідиною відбувається при великих значеннях числа Пекле. Рух теплоносія в каналі вважається інерційним і теж відповідає великим значенням числа Пекле. У гідродинамічному аспекті неньютонівські рідини та теплоносій рухаються в різних режимах, а в тепловому аспекті – в одному.
Сформульовано рівняння теплообміну при течії неньютонівських (в’язкопластичної та узагальнено-зрушеної) рідин. Наведені рівняння теплообміну, являють собою систему диферинціальних рівнянь першого порядку в кінцевих різницях для температури рідини в каналі. І в цьому полягає їх головна відмінність від розрахунків для випадків фіксованих температу на стінках прямого каналу та занурення прямого каналу в тепловий резервуар з фіксованою температурою. Показано, що температура рідини залежить від поздовжньої координати вздовж каналу. В цьому випадку залежність температури від геометричних характеристик каналу визначається площею поперечного перетину каналу та його периметром, а також відношенням геометрічних розмірів (ширини, висоти та довжини) каналу.
Отримані вирази, при проведенні інженерних розрахунків дозволяють визначати відповідні коефіцієнти тепловіддачі і теплопередачі при течії неньютоновскіх рідин в каналах і з зовнішнім середовищем.
Development of conceptual model of project value dynamics analysis in conditions of uncertainty
Authors: Bugrov Olexander , Bugrova Olena 
Published: September 2021

A conceptual model for analyzing the dynamics of the value of the project, achieved as a result of engineering, under conditions of uncertainty has been developed. In the methodological context, the proposed approach is based on an array of isovalues, each of which corresponds to its own level of optimism in forecasting the cash flow for the project. With the increase in the efficiency of the project due to engineering, the entire array of iso-value lines’ changes its geometrical position, moving further from the origin (in the four-dimensional space "time-benefit-cost-risk"). The proposed model includes three stages. At the first stage, input information is collected and the corresponding analysis is initiated. The result of the second stage is a multivariate cash flow forecast and calculation of the benefit-cost ratio (BCR) and its changes for each scenario. The third stage provides the calculation of the expected BCR and its change, an assessment of the risk of making an erroneous decision and changing this risk as a result of the engineering session. The model makes it possible to calculate the achieved proportion of the static and dynamic vectors of change in the value of the project, which is one of the key manifestations of the scientific novelty of the work. In the example considered, the share of the dynamic vector of growth in the value of the project was found to be 35.47 %. The model has an environmental property - the assessment of the success of value engineering under conditions of uncertainty is carried out on the basis of the annual total benefits and the annual total costs throughout the project cycle. Thus, the analysis takes into account the impact of the project on the environment, which is reflected in the risk assessment. The given case testifies to the feasibility of applying the model in the practice of engineering the value of construction projects.
Radiofrequency catheter ablation for ventricular tachycardia using robotic magnetic navigation technology in a teenager after surgery of congenital heart disease and transcatheter closure of ventricular septal defect using an occluder: a case report
Authors: Ponomarenko A. V. , Morzhanaev Egor Alexeyevich , Mikheenko I. L. , Romanov A. B. 
Published: September 2021

Introduction. The case report describes radiofrequency ablation of ventricular tachycardia (VT) using robotic magnetic navigation (RMN) in a teenager after surgery of congenital heart disease (CHD) and transcatheter closure of ventricular septal defect (VSD) using an occluder.Short description. The 16-year-old female patient was operated on in 2005 for CHD. In 2018, the patient underwent resection of ascending aortic sub-valvular membrane, followed by transcatheter closure of VSD with an occluder. After surgery, VT of 294 bpm was documented, which required an emergency hospitalization. Decision was taken to perform a radiofrequency ablation (RFA) using RMN. RFA was performed from the pulmonary artery valve through the scar to upper occluder edge spreading to tricuspid valve. After procedure, VT paroxysms were not induced with all pacing types. According to ECG series and 24-hour Holter monitoring on the 2nd day after surgery, VT episodes were not recorded. During the 6-month follow-up period, VT episodes were not registered without taking antiarrhythmic drugs.Discussion. This case report demonstrates the effectiveness of using RMN system for VT ablation in a teenager with CHD, who underwent open surgical interventions and transcatheter VSD closure using an occluder.
Coronary endarterectomy in myocardial revascularization
Authors: Visker Ya. Yu. , Kovalchuk D. N. , Molchanov A. N. , Ibragimov O. R. 
Published: September 2021

Aim. To compare the immediate outcomes of combined coronary artery bypass grafting (CABG) with coronary endarterectomy (CE) and isolated CABG.Material and methods. This retrospective study included 192 patients with stable angina who underwent myocardial revascularization in the period from January 2016 to August 2018. The patients were divided into 2 groups. Group 1 included patients who underwent combined CABG and CE, while group 2 — patients who underwent isolated CABG. Patients in both groups did not differ in the main preoperative characteristics, with the exception of the incidence of obesity and right coronary artery disease.Results. In-hospital mortality in group 1 was 2,2% (n=2), in group 2 — 2% (n=2). The incidence of perioperative myocardial infarction in group 1 was 1% (n=1) and in group 2 — 0%. There were no significant differences between groups in the following postoperative parameters: in-hospital mortality, perioperative myocardial infarction, need and duration of inotropic support, duration of mechanical ventilation (MV) and need for long-term mechanical ventilation, stroke, arrhythmias, resternotomy for bleeding. In group 1, encephalopathy (11,8%) and respiratory failure (12,9%) were significantly more common.Conclusion. Combined CABG and CE is a safe technique for achieving complete myocardial revascularization in diffuse coronary artery disease, since, in comparison with isolated CABG, there is no increase in the incidence of death and perioperative myocardial infarction. However, in this category of patients, an increase in the incidence of non-lethal, non-disabling cerebral and pulmonary complications should be expected.
Myocardial revascularization in patients with acute coronary syndrome in the context of COVID-19 pandemic: a single-center prospective cohort study
Authors: Kamenskaya O. V. , Klinkova A. S. , Loginova I. Yu. , Habarov D. V. , Chernyavskiy A. M. , Lomivorotov V. V. 
Published: September 2021

Aim. To assess the outcomes of myocardial revascularization (MR) and identify risk factors for early postoperative complications in patients with coronary artery disease (CAD) with acute coronary syndrome (ACS) in the context of coronavirus disease 2019 (COVID-19) pandemic.Material and methods. The study included 769 patients aged 67,0±4,4 years with CAD with ACS in the period from April to October 2020. In an expedited manner, percutaneous transluminal coronary angioplasty (n=699) and on pump coronary artery bypass grafting (CABG) (n=70) were performed. All patients underwent a COVID-19 rapid tests. After MR, the following outcomes were recorded: adverse cardiovascular events and other complications; various surgical interventions; bilateral COVID-19 pneumonia; death. The follow-up period lasted 30 days.Results. During the hospitalization, COVID-19 was detected in 5,3% of patients (n=41). Among them, bilateral multisegmental pneumonia developed in 48,8%. Among infected patients, COVID-19-related mortality in the early postoperative period was 9,8%. The all-cause mortality rate was 0,7%. On pump CABG significantly increases the risk of developing COVID-19 pneumonia (odds ratio (OR), 23,2; 95% confidence interval (CI) 14,2-35,4; p<0,001). After MR, COVID-19 pneumonia was associated with respiratory (OR, 7,6; 95% CI, 4,3-11,5; p=0,001) and heart failure (OR, 4,2; 95% CI, 2,9-8,6; p=0,001), atrial fibrillation (OR, 8,3; 95% CI, 4,1-13,9; p=0,001), as well as with all-cause mortality (OR, 10,3; 95% CI, 5,2-16,7; p=0,005). Recurrent transmural myocardial infarction in patients with CAD was associated with heart failure after MR (OR, 7,1; 95% CI, 2,4-12,6; p=0,012).Conclusion. Conducting on pump CABG in patients with CAD with ACS is the leading trigger for developing COVID-19 pneumonia, which, during hospitalization after MR, was associated not only with respiratory complications, but also with impaired heart function, which significantly increases the death risk in this category of patients.
Selection of optimal endarterectomy technique in the left anterior descending artery for diffuse coronary atherosclerosis
Authors: Belash S. A. , Barbukhatti K. O. , Shevchenko S. S. , Yasakova E. P. , Nekrasov A. S. , Porkhanov V. A. 
Published: September 2021

Aim. To determine the optimal method for performing coronary artery endarterectomy (СE) based on immediate and long-term outcomes of coronary artery bypass grafting (CABG) in combination with open or closed CE in the left anterior descending artery (LAD).Material and methods. This retrospective study included 103 patients who underwent CABG in combination with closed CE and 204 after open CE in the LAD during the period from 2003 to 2016. In both groups, the patient age was comparable (65 years [56; 69] vs 67 years [58; 72] (p=0,263)). There were more men (88,3% vs 81,4% (p=0,421). The mean follow-up period was 94 months [38; 180]. Long-term outcomes were assessed in 86,4% (n=89) and 83,8% (n=171) of patients from the closed and open CE groups, respectively (p=0,141). Angiographic data were studied in 75,3% and 67,3% of patients, respectively (p=0,441).Results. In the closed and open CE groups, in-hospital mortality was 4,8% and 1,5% (p=0,0012), incidence of perioperative myocardial infarction — 11,6% vs 2,5%, (p<0,001), survival rate after 7,8 years — 81,3±5,1% and 84,4±3,2% (p=0,342), respectively. The patency of arterial shunts was significantly higher in the open CE group — 93,1% vs 80,6% (p=0,004). At the same time, the patency of venous shunts in the long-term period between the groups was comparable — 70,1% vs 73,7% (p=0,314).Conclusion. Open CE in combination with CABG provides better immediate outcomes compared to closed CE. Long-term survival and freedom from angina between the groups were comparable. In the long-term period, the patency of internal thoracic artery after open CE is better than after the closed technique. Open CE is a safe and effective method to achieve complete myocardial revascularization in patients with severe diffuse LAD atherosclerosis.