bluuebunny/crossref_metadata_2025 huggingface dataset:
Automated greenhouse, instrumentation and fuzzy logic
Authors: Vaca Vargas Sergio Alejandro
Published: September 2021

Crops are vulnerable to climatic conditions; therefore, their quality may vary according to environmental behavior. Under optimal conditions the crop can have a good productive development and an increase in the yield per unit area, reducing the risks caused by climatic changes, pests and diseases. With the electronic application in greenhouses it is possible to make efficient use of the resources since these can be controlled according to each stage of the development of the crop. Being in an isolated environment, in other words, independent of the external environment, it is possible to carry out production at any time of the year, thanks to the microclimates.  The following paper shows the development of an automated greenhouse using electronic instrumentation to control its irrigation, lighting, humidification and ventilation systems using fuzzy logic.
Association of Periodontal Disease with Serum Uric Acid and CRP in Patients Treated for Acute Coronary Syndrome: A Comparative Study
Authors: Chabuk Mohammed Ihsan , Sharba Ahmed Mahdi , Alsafar Ali Razzaq Alisalih
Published: September 2021

Background: Periodontal diseases (PED) are a widespread, complicated, long-lasting inflammation of the gum. In recent years, lots of lines of evidence have confirmed the existence of an interrelated link between PED and systemic illnesses including acute coronary syndrome (ACS). In the pathogenesis of ACS, the persuasive inflammatory role of coronary vessels is well documented. An increasing body of evidence highlights the impact of UA in inflammation. C-reactive protein (CRP) is an acute phase reactant well-known as a nonspecific marker for systemic and vascular inflammation. The study intended to evaluate the associations of PED with SUA and CRP in patients treated for ACS in a comparative study. Methodology: 136-patients registered in this comparative study labeled as ACS besides 74-controls. The blood analysis of creatinine, urea, SUA and CRP had done for the applicants. Oral examination for grades and severity of PED had performed, and the candidates were grouped accordingly. Statistical studies had attained using SPSS software (IBM), with a significance-value calculated at <0.05. Results: There was a significantly higher HSCRP levels with a higher nonsignificant SUA levels among the ACS group. Risk factors in terms of incidence of DM, hypertension, and smoking (except the BMI) were significantly higher among patients. More than 3/4th of the patients' group was suffering from generalized PED (74.3%), while 15.4% had a localized PED and only 9% had healthy periodontium. Meanwhile, about 2/3rd of the controls has normal periodontium. 18.4% vs. 75% had a mild, 25.7% vs. 4% had a moderate, and 21.3% vs. zero had a severe form of PED, in patients and control respectively. There was a significant worsening of PED in terms of severity and grading (p-0.001) with the increase of HSCRP levels, which is not the case for increased SUA. Conclusion: HSCRP levels were significantly higher among patients with ACS compared to healthy control. There was a significant worsening of PED in terms of severity and grading with the increase of HSCRP levels. This is not the case for increased SUA, which is not associated with poor periodontal status.
The Role of Serum IL-1β in Combination with Fractional Exhaled Nitric Oxide in the Diagnosis of Adult Bronchial Asthma
Authors: Abbas Amjed H. , Rasheed Muna Abdulridha , Al-Hindy Hayder Abdul-Amir , Mousa Mazin J. , Al-Shalah Hadeel Abd Ameir
Published: September 2021

Background: Asthma is a chronic airway disorder, in which cytokines are probably contributing in the inflammation and in the pathophysiology of the disease. This study aimed to determine the benefit of measurement of FENO and IL-1β in the diagnosis of asthma. Method: The study was conducted in Merjan Medical City and Spiro private clinic in Babylon province in the period from March to June 2019, 127 asthmatic patients were compared with 60 healthy subjects as control group. The age ranged from 10 to 60 years old, fractional exhaled nitric oxide (FENO) test was performed to assess asthma by using (Medisoft® company, Belgium). Body mass index (BMI) was subtracted as weight (kg)/height (m2). Waist circumference/cm (WC) was calculated between the inferior margin of thoracic ribs and midline of the iliac-crest. Hip circumference/cm (HC) was calculated from the broadest hip eminent before the waist/hip ratio (W/H) computed. The FENO measures had classified into low (<25 ppb) or intermediate-high (⩾25 ppb) according to the ‘’American Thoracic Society recommendations’’. Iterleukine-1 beta (IL-1β) was measured in the sera by ELISA technique using Human IL-1β (Interleukin 1-Beta) ELISA Kit from Elabscience®. Results: there was no significant correlation between the levels of FENO and IL-1β with body weight as measured by the way of BMI and waist/hip ratio. There was no correlation between duration of asthma with the levels of FENO and IL-1β. ROC curve analysis of FENO test in BA patients showed significant (p-0.001) high sensitivity (92%) and specificity (90%). However, ROC curve analysis of IL-1β in BA patients revealed non-significant (p-0.53), lower accuracy (56.4%), sensitivity 962%) and specificity (57%) to distinguish BA patients). Conclusion: No relation between obesity and eosinophilic airways inflammation. The measurement of FENO level is more important in assessment of asthma inflammation than IL-1β.
Immunohistochemical Expression of EGFR and ErbB2/ HER2 in Human Meningioma. A Clinicopathological Study
Authors: Khalid Zeena Ayad , Mirza Sazan Abdulwahab , Dhannoon Azza Nazar
Published: September 2021

Background: meningioma is considered a common benign tumor and more frequent happen, they are slow growing primary tumors that originate from meningothelial cells of the arachnoid and spinal cord. The histological grade of the WHO and the extension of the initial surgical resection are determining prognostic factors in these tumors. Aim of the study: To investigate the expression of EGFR and ErbB2 / HER2 in human meningiomas, to correlate this expression with various clinic pathological parameters (age, gender, tumor type, tumor grade), and to study the correlation between these two markers. Methods: this is a retrospective study including 30 cases of human meningiomas. Clinical data collected from patient's files. Immunohistochemical study of EGFR and ErbB2/HER2 performed along with scoring. Results: this study included 30 cases of meningioma. There was a significant statistical correlation between tumor grade and tumor histological type, as 100% of grade II were atypical meningiomas, and 77.8% of grade I were meningiothelial meningiomas, with a P value 0.0001. 25/30 cases showed positive immunohistochemical expression of EGFR, 24/25 (96%) cases were grade I, 1/25 (4%), 16/25(72%) cases were meningiothelial, 1/25 (4%) case angiomatous, 1/25 (4%) case atypical, 5/25 (20%) cases were fibroblastic. only 4/30 cases showed expression of HER 2/ neu, 3/4(75%) cases were female, all cases were above 30 years of age, all cases were grade I, 2/4 (50%) cases were fibroblastic and the other two cases were meningiothelial type. Conclusions: EGFR is frequently over expressed in meningiomas, there was a significant difference between mean of EGFR and HER 2, EGFR have more positive results than HER 2.
Nanotechnology and the Most Important Characterization Techniques for Nanomaterial's: A Review
Authors: Ulwali Ruqayah A. , Abbas Heba Kh. , Yasoob Noor , Alwally Hanan Abed
Published: September 2021

Due to the importance of nanotechnology because of its features and applications in various fields, it has become the focus of attention of the world and researchers. In this study, the concept of nanotechnology and nanomaterials was identified, the most important methods of preparing them, as well as the preparation techniques and the most important devices used in their characterization.
Study of Electrical and Thermoelectrical Properties of One Strand DNA Chain for Nanoscale Thermoelectric Applications
Authors: AL-Saidi Shakir A.A. , Al-mebir Alaa Ayad K. , Al-Mukh J.M.
Published: September 2021

The concept of using DNA molecules for designing nano-scale electronic systems has attracted researcher’s attention due to the unique properties of DNA, such as self-assembly and self-recognition. Thus, increased number of studies, theoretically and experimentally, have been carried out to study the possibility of adopting DNA molecules in designing nanoscale thermoelectric devices. In this work, a general expression of the electron transmission probability that describes the electron transfer through one strand DNA chain has been derived using the steady-state-formalism by assuming one strand of DNA molecules as line model. The energy-dependent transmission was studied, then energy-and temperature-dependent Seebeck coefficient, and thermoelectric characteristics of four one strand DNA sequences: (A-A)10, (C-C)10, (G-G)10 and (T-T)10 are theoretically studied. According to the obtained results, it is found that the transmission behavior (magnitude and position) is varying with the type of DNA sequence. Also, the energy dependent Seebeck coefficient (S-E) curves clearly show a nonlinear energy-dependence, while the relationship between Seebeck coefficient and temperature (S-T) is linear. Thermoelectric power factor as a function of temperature was found to be enhanced with the temperature increment for the four types of DNA nucleobases. The highest values of thermoelectric power factor belong to thymine (120Wm-1K-2) and cytosine (60 Wm-1K-2), that nominate them as outstanding candidate thermoelectric materials to be adopted in the fabrication of one strand DNA-base nanoscale thermoelectric devices.
Quantum, Brain, and Immunity Triangle in Mental Health and Neurosciences
Authors: Pandarakalam James Paul
Published: September 2021

Immunopsychiatry is a fledgling research field with great potential in the etiological research of psychotic disorders and can turn out to be helpful in finding novel treatment strategies and repurposing existing therapeutic agents. The clinical applications of Neuroquantology complement some of the etiological views of psychotic disorders that are evolving in immunopsychiatry. The pathogenesis of psychotic process may involve an underlying immune disturbance leading to neuro-quantological disorders. The cytokine storm that occurs due to COVID-19 and the resulting neurotoxic effects illustrate how an autoimmune reaction can potentially form psychotic symptoms through the mediation of the brain. Studying the interconnection between neurotransmission and immunity has significant relevance in the etiopathogenesis of psychiatric disorders. Immunopsychiatry alone may not be adequate to explain the development of psychotic symptoms, but Neuroquantology and immunopsychiatry complement each other in this endeavor. An expanded model of the brain–mind consciousness complex is required to understand the intricacies of psychotic symptomatology and contributions from Neuroquantology are highly enrichening. The claims of the practitioners of quantum immunotherapies need further exploration. Quantum-brain and immunity triangle can result in a huge paradigmatic shift in our understanding of psychiatric disorders and the evolving landscape of immunopsychiatry and clinical Neuroquantology warrant further promotion.
Počátky univerzitní výuky neklasické archeologie v programových proslovech Jana Kollára a Jana Erazima Vocela (1849–1851)
Authors: Sklenář Karel
Published: September 2021

The first Central European university departments focused specifically on non-classical archaeology were established 170 years ago: Jan Kollár became a professor in Vienna in 1849, Jan Erazim Vocel in Prague in 1850. The content and focus of their teaching in this period is best evidenced by introductory and concluding speeches, preserved in manuscript and printed form; above all, they clearly demonstrate the difference between Kollár’s Romantic approach, which for the most part uncritically sought traces of the supposed original Slavic settlement in Europe (mainly in Italy), and Vocel’s, which already distinguished between “pagan” and “Christian” (prehistoric and medieval) archaeology and with his concept of the field was already heading for Positivism. The article includes the texts of these speeches.
Experimental Determination of Heat Transfer using a Polymer Solution Shower during Induction Hardening*
Authors: Kadanik M. , Burgschat L. , Reich M. , Petersen S. , Keßler O.
Published: September 2021

Heat treatment simulation of inductive surface hardening of large bearing rings is a challenging multi-physical task. Besides the determination of material and process parameters of induction heating, the quenching process must be modelled to obtain realistic results concerning surface hardening depth as well as information about residual stresses and distortions of the bearing rings. A common method to model quenching processes is to determine heat transfer coefficients for the specific process depending on component surface temperature. This method was used to characterize the shower cooling process using an aqueous polymer solution of a modified polyalkylene glycol (PAG) type. A specifically designed test set-up allowed to determine the heat transfer coefficients for different distances between shower and hot specimen as well as for different impingement angles of the fluid relative to gravitation. Additionally, the calculated heat transfer coefficients were checked and corrected by FEM simulations.
Optimized Nitriding for Subsequent Induction Heat Treatment
Authors: Hoja S. , Nadolski D. , Steinbacher M. , Fechte-Heinen R.
Published: September 2021

Nitriding is used to achieve a high hardness in the surface layer through the precipitation of nitrides. However, to realize high nitriding hardness depths, treatment times of many hours are necessary, which usually also result in a decrease in strength within the nitrided layer and base material. With induction heat treatment, on the other hand, high hardness depths can be achieved in a very short time. However, the maximum hardness increase is limited by the alloy content of the material. By combining nitriding and induction hardening, high hardness depths can be achieved in short treatment times as an alternative to deep nitriding. In addition to a significant saving in process energy surface layer properties that cannot be achieved with the individual processes are expected. In order to fully exploit the potential of the combination treatment, at first suitable conditions must be set during nitriding for the subsequent induction hardening. In the present work, nitriding layers with low-porosity compound layers as well as only diffusion layers were produced and analyzed on typical nitriding and tempering steels for this purpose.
Insight on micro bubbling mechanism in a 2D fluidized bed with Group D particles
Authors: Tian Fengguo , Liu Shulei , Zhao Zifeng , Lei Ming
Published: September 2021

By CFD-DEM simulations, the present work is aimed to investigate the transient gas-solid bubbling mechanisms along a whole bubble lifecycle in a 2D fluidized bed from a micro perspective. Systemic comparisons with CCD measurements confirm the validity of current simulations. Afterward, the manner of particle motion and its driving mechanisms at various stages are investigated. In order to do that, external forces are analyzed at an individual particle level, including the drag, pressure gradient force, and their resultant acceleration together with gravity. Many interesting findings have been achieved. For example, a switch in directions of drag and pressure gradient forces at the root of an initial bubble enables its detachment. And, regarding their contributions to the burst of a bubble, the drag force is several times of the pressure gradient forces. Present efforts help to offer a novel view of particle dynamics during the bubbling fluidization.
Brand names as multimodal constructions
Authors: Dübbert Alexander
Published: September 2021

Brand names are a common part of the everyday consumer environment, and can be found on countless visual surfaces such as food packaging. A key characteristic of brand names is their fixed design. Many brand names owe their linguistic form to units that originally did not constitute proper names. They developed into brand names through complex sub-processes of what is commonly referred to as onymisation. These processes include semantic, morphological and phonological/graphemic changes. The aim of this paper is to explore how the specific typographic design of a brand name can be an additional indicator in its process of onymisation. After clarifying the concepts of onymisation and typographic design, an extended multimodal construction model is presented. The basis of the paper is an analysis of a corpus of image data comprising more than 600 photographs of food packaging. In order to get a first impression of how the multimodal constructions of brand names could look, an omission test following a suggestion by Ziem, Alexander. 2017. Do we really need a multimodal construction grammar?Linguistics Vanguard3(s1). 1–9 is applied to the data.
Proposal for THz lasing from a topological quantum dot
Authors: Rider Marie S. , Giannini Vincenzo
Published: September 2021

Topological quantum dots (TQDs) are 3D topological insulator (TI) nanoparticles, displaying symmetry-protected surface states with discretized energies. We present a theoretical proposal to harness these energy levels in a closed lasing scheme operating in the terahertz (THz) frequency range. In this scheme, a single TQD lases from its topological surface states in the THz regime when pumped with low intensity, incoherent THz frequency light. The time scales associated with the system are unusually slow, and we find that lasing occurs with a very low threshold. THz lasers are often bulky or require intricately engineered nanostructures. Topological quantum dots present a new, compact and simple platform for THz lasing. The lasing threshold is so low, we predict that the room-temperature blackbody radiation can substantially contribute to population inversion, providing a route to room-temperature THz lasing pumped via blackbody radiation.
The crystal structure of (1R
*,2S
*)-1,2-bis(2-fluorophenyl)-3,8-dimethoxyacenaphthene-1,2-diol, C26H20F2O4
Authors: Iitsuka Hiroaki , Li Kun , Kobayashi Miyuki , Iida Kikuko , Noguchi Keiichi , Yonezawa Noriyuki , Okamoto Akiko
Published: September 2021

C26H20F2O4, monoclinic, P21/n (no. 14), a = 10.3707(2) Å, b = 12.0232(2) Å, c = 15.7744(3) Å, β = 90.907(1)°, V = 1966.65(6) Å3, Z = 4, R

gt
(F) = 0.0371, wR

ref
(F
2) = 0.1013, T = 193.15 K.
Crystal structure of dichlorido-bis(dimethyl sulfoxide-κO)bis(4-methylphenyl-κC
1)tin(IV), C18H26Cl2O2S2Sn
Authors: Lo Kong Mun , Lee See Mun , Tiekink Edward R. T.
Published: September 2021

C18H26Cl2O2S2Sn, monoclinic, P21/n (no. 14), a = 8.3295(1) Å, b = 10.5647(1) Å, c = 12.0078(1) Å, β = 96.612(1)°, V = 1049.642(18) Å3, Z = 2, R

gt
(F) = 0.0174, wR
ref(F
2) = 0.0455, T = 100 K.
Herausforderungen in der Langzeitpflege
Authors: Hasseler Martina
Published: September 2021

Die Langzeitpflege ist vor diverse Herausforderungen gestellt: Zunahmen der Bedarfe und gleichzeitig können die Leistungen der Pflegeversicherung diese nicht decken. Sie intendiert nicht eine bedarfsangemessene pflegerische Versorgung, sondern ist von Leistungen pflegender Angehöriger abhängig und mit hohen physischen und psychischen Belastungen verbunden. Der Pflegepersonalmangel, der in den nächsten Jahren zunehmen wird, bleibt ein weiteres noch nicht bearbeitetes Thema für die Zukunft. Neue Technologien werden als eine Möglichkeit betrachtet, die Bedarfe zu decken. Gleichwohl müssen diese sinnhaft in Pflegearrangements integriert werden.
Versorgungsbedarfe, Ressourcen und Potenziale älterer Menschen im Quartier in Bremen
Authors: Görres Stefan , Meinecke Paulina , Holsten Patrizia , Chen Wenjuan , Dannat Kathrin Kezia , Heera Navjoot , Hudai Aqi , König Katharina , Möller Ricarda
Published: September 2021

Für Kommunen ist die Vorbereitung auf den demographischen Wandel von hoher Bedeutung. Quartieren und dem Quartiersmanagement kommen dabei eine zentrale Bedeutung zu. Im Rahmen einer Onlinebefragung wurden 13 Quartiersmanager*innen in Bremen zu ihren Kenntnissen, Erfahrungen und Einschätzungen von Versorgungsbedarfen, Ressourcen und Potenzialen älterer Menschen im Quartier befragt. Die Ergebnisse der Pilotstudie können zur Verbesserung der Quartiersarbeit mit und für ältere Menschen beitragen.
Konturen einer Berufsfelddidaktik Gesundheit und Pflege
Authors: Walter Anja
Published: September 2021

Das Berufsfeld Gesundheit und Pflege unterliegt einer hohen Veränderungsdynamik. Entsprechend muss die Berufsfelddidaktik, die sich mit dem Lehren und Lernen im Berufsfeld befasst, komplexe disziplinäre Bezüge aufnehmen. Zugleich ist sie der Bildungs- und der Berufspraxis verpflichtet. Zukünftig muss sie weiter ausgearbeitet werden, um die Berufsangehörigen noch stärker zu Mitgestaltenden einer würdevollen gesundheitlichen Versorgung werden zu lassen.
Interprofessionalität lehren, lernen und leben
Authors: Stöcker Gertrud
Published: September 2021

Kommunikative Kompetenzen und interprofessionelle Zusammenarbeit in den Gesundheitsberufen sind getragen von einer wertschätzenden Haltung der eigenen Profession und gegenüber anderen Professionen. Sie werden grundgelegt in Ausbildung und Studium, vertieft in spezifischen Weiterbildungen und weiterentwickelt in einer interdisziplinären beruflichen Praxis.
A novel KCNT1 mutation in a Chinese family with severe autosomal-dominant nocturnal frontal lobe epilepsy
Authors: Xie Na , Qin Weiwei , Deng Jianzhong , Qi Jinxing , Niu Dewang , Lu Guifeng , Wang Qun
Published: September 2021

We describe a Chinese family with severe autosomal-dominant nocturnal frontal lobe epilepsy (ADNFLE) and psychiatric problems in whom whole-exome family trio sequencing identified a heterozygous mutation in the potassium channel subfamily T, member 1 (KCNT1), a sodium-gated potassium channel gene, which was a novel missense mutation c.2153A>T (p. Asp718Val). The typical characteristics of the three patients in the family were refractory epilepsy, acquired cognitive impairment, and psychiatric problems, which include hallucinations and suicidal thoughts and behaviors. The age at onset was found to be earlier in son and daughter of the proband than that of the proband, as proven by the proband’s history of an epileptic seizure at the age of 16 years and her son’s and daughter’s history of seizures at the age of 8 years. Magnetic resonance imaging findings were negative for any abnormalities. Because of psychiatric symptoms, these three patients were administered risperidone at different times during their illness. The protestor’s son had tried fenofibrate treatment, but clinical remission was unclear. In summary, our findings broadened the mutation database in relation to KCNT1 and implicated the sodium-gated potassium channel complex in ADNFLE, more broadly, in the pathogenesis of focal epilepsies.
A convenient synthesis of trifluoromethyl-substituted quinolino[8,7-h]quinolines and quinolino[7,8-h]quinolines
Authors: Seitz Bianca , Maas Gerhard
Published: September 2021

Bis(trifluoromethyl)-substituted quinolino[8,7-h]quinolines and quinolino[7,8-h]quinolines have been prepared from 3-substituted 1-CF3-prop-2-yne 1-iminium triflate salts and 1,5- and 1,8-diaminonaphthalene, respectively, by a twofold pyridoannelation sequence. These transformations do not require any additional reagent and can be performed at remarkable mild thermal conditions.
Analysis of Intermediate Hosts and Susceptible Animals of SARS-CoV-2 by Computational Methods
Authors: Yang Yueying , Zheng Mengzhu , Liu Yang , Wang Yali , Xu Yang , Zhou Yirong , Sun Dejuan , Chen Lixia , Li Hua
Published: September 2021

COVID-19, a disease caused by SARS-CoV-2 that produces major symptoms of pneumonia, has been a disaster worldwide. The traceability of SARS-CoV-2 and the discovery of susceptible animal species is crucial to halt viral transmission and explore the mechanism of cross-species transmission. We selected 82 representative ACE2 sequences from the 1000 sequences with the closest homology to the hACE2 protein. All selected ACE2 proteins were subjected to homology modeling. Potential natural and intermediate hosts, as well as animal species susceptible to SARS-CoV-2, were analyzed systematically by calculation of the binding free energy of ACE2 protein to the RBD of SARS-CoV-2. Primates, some wild Felidae, civets, goats, spotted hyenas and golden hamsters are susceptible to SARS-CoV-2 and may be potential intermediate hosts, whereas pangolins, birds and reptiles are unlikely to be intermediate hosts. Mice, rats and guinea pig are not susceptible to SARS-CoV-2. Given their possible susceptibility, non-human primates, goats and golden hamsters could potentially be used as experimental models to examine SARS-CoV-2 infection without transgenesis. Herein, possible candidates for the natural and intermediate hosts of SARS-CoV-2 are suggested, to provide guidance for subsequent studies.
The boson peak and the first sharp diffraction peak in (As2S3)x(GeS2)1–x glasses
Authors:   V. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, 41, prosp. Nauky, 03680 Kyiv, Ukraine, Stronski A.V. , Kavetskyy T.S. ,   Drohobych Ivan Franko State Pedagogical University, 24, I. Franko str., 82100 Drohobych, Ukraine,   The John Paul II Catholic University of Lublin, 14 Al. Racławickie, 20-950 Lublin, Poland, Revutska L.O. ,   National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, 37, prosp. Peremogy, 03056 Kyiv, Ukraine, Kaban I. ,   IFW Dresden, Institute for Complex Materials, Helmholtzstr. 20, 01069 Dresden, Germany, Jóvári P. ,   Research Institute for Solid State Physics and Optics, H-1525 Budapest, POB 49, Hungary, Shportko K.V. ,   V. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, 41, prosp. Nauky, 03680 Kyiv, Ukraine, Sergienko V.P. ,   National Pedagogical Dragomanov University, 9, Pirogova str., 01601 Kyiv, Ukraine, Popovych M.V. ,   V. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, 41, prosp. Nauky, 03680 Kyiv, Ukraine
Published: September 2021

The parameters of the boson peak (BP) and the first sharp diffraction peak (FSDP) in (As2S3)x(GeS2)1x glasses measured using high-resolution Raman spectroscopy and high-energy synchrotron X-ray diffraction measurements are examined as a function of x. It has been found that there is no correlation between the positions of BP and FSDP. The BP position shows a nonlinear composition behavior with a maximum at about x = 0.4, whereas the FSDP position changes virtually linearly with x. The intensities of both BP and FSDP show nonlinear composition dependences with the slope changes at x = 0.4, although there is no direct proportionality. Analysis of the partial structure factors for the glasses with x = 0.2, 0.4 and 0.6 obtained in another study has shown that the cation-cation atomic pairs of Ge–Ge, Ge–As and As–As make the largest contribution to FSDP, where the Ge–Ge and Ge–As pairs are dominant.
Autoeficacia, estado emocional y autorregulación del aprendizaje en el estudiantado universitario durante la pandemia por COVID-19
Authors: Gaeta González Martha Leticia , Gaeta González Laura , Rodríguez Guardado María del Socorro
Published: September 2021

La pandemia por COVID-19 ha incidido fuertemente en todos los ámbitos de la sociedad, incluido el educativo. En el nivel universitario, la instrucción en línea ha generado diversos desafíos en el estudiantado para gestionar sus recursos personales y alcanzar los objetivos académicos. Desde un enfoque sociocognitivo, se realizó un estudio cuantitativo que tuvo como objetivos analizar la relación entre la autoeficacia, el estado emocional y la autorregulación del aprendizaje en el estudiantado universitario y contrastar su variación en función del género y del período académico durante el confinamiento a causa de la pandemia por COVID-19. Participaron 1665 personas procedentes de distintas universidades en México, quienes contestaron un cuestionario en línea entre junio y agosto de 2020. Los análisis de regresión indicaron que la autoeficacia para manejar situaciones estresantes, junto con emociones de desesperación, miedo y esperanza, inciden positivamente en la autorregulación del aprendizaje, mientras que el enojo lo hace negativamente. Las mujeres indicaron mayores puntajes en miedo, gratitud y compasión, así como en autorregulación del aprendizaje. El estudiantado de posgrado reportó tranquilidad, esperanza y gratitud con mayor frecuencia. Por su parte, el grupo de licenciatura de los últimos semestres (7º-10º) indicó enojo, miedo y desinterés con mayor frecuencia y el menor nivel de autoeficacia y autorregulación del aprendizaje respecto a los de períodos académicos iniciales e intermedios. A partir de estos datos, es necesario promover acciones educativas que ayuden a la población universitaria a potenciar sus capacidades personales para influir en el entorno de cara al logro académico, por medio de una toma de conciencia de las dificultades que pueden limitar su aprendizaje y con un atento control de su cognición, estado emocional y comportamiento durante y después del confinamiento.
Consecuencias de la Pandemia COVID-19 en la permanencia de la población estudiantil universitaria
Authors: Regueyra Edelman María Gabriela , Valverde-Hernández Melissa Edith , Delgado Ballestero Antonio
Published: September 2021

Con el propósito de aportar información sobre los efectos de la Pandemia en la permanencia de la población estudiantil de 10 carreras de la Universidad de Costa Rica, para la toma de decisiones de autoridades universitarias, se realizó un estudio cuantitativo exploratorio y descriptivo, en el marco del proyecto que investiga la permanencia del estudiantado en dicha institución. La información se recopiló por medio de un cuestionario en línea que estuvo a disposición de la población estudiantil entre diciembre de 2020 y enero de 2021. Se obtuvo respuesta de 974 estudiantes que participaron voluntariamente. Los resultados evidencian que en el I y II ciclo de 2020 se enfrentaron dificultades en las clases remotas: el 95% enfrentó problemas de conectividad a internet, 95% dificultades para adaptarse al proceso de enseñanza aprendizaje, el 75% limitaciones de acceso a programas informáticos para realizar evaluaciones académicas, 89% dificultades de interacción en los trabajos grupales. Además, 98% indica niveles de estrés y 95% de ansiedad. Existe prolongación de la permanencia debido a que el 46% disminuyó la carga académica, 40% indica rezago en el avance en el plan de estudios a causa de que la carrera no ofreció algunos cursos y el 20% retiró o abandonó algún curso. El 4% de la población ya había decidido no matricular en el I ciclo 2021 y 12 % aún no lo había decidido. Con estos datos se evidencia que la Pandemia COVID-19 provocó efectos en la permanencia de la población estudiantil en la universidad y que se requiere construir respuestas institucionales a las necesidades expresadas, a fin de garantizarle la permanencia y graduación.
Visibilización de dificultades educativas: Los retos del gobierno colombiano y de las comunidades educativas para afrontarlas
Authors: Montero Mahecha Luz Stella
Published: September 2021

El presente ensayo se realiza con el fin de dar a conocer los obstáculos que ha afrontado la educación pública colombiana y la inequidad que se ha visibilizado con la llegada de la pandemia del Covid- 19. Para ello se analizan diversas dificultades, entre las que se encuentran, la carencia de un Proyecto Educativo Institucional sólido, la ausencia de conectividad y la insuficiencia de equipos y conocimientos tecnológicos de la comunidad educativa, los cuales tienen de trasfondo la falta de conocimiento en el manejo de herramientas digitales y/o la escasez de recursos económicos, al igual que la carencia de hábitos de auto aprendizaje. De allí que es necesario que quienes estén involucrados en el proceso enseñanza aprendizaje, desempeñen con compromiso el papel que les corresponde, de tal manera que se cumpla a cabalidad con el currículo, independientemente de las circunstancias que lo rodeen. Como conclusión, se establece la responsabilidad que debe asumir el Estado en la asignación de presupuesto para el sector educativo y apoyo a las comunidades, el compromiso de la escuela para liderar la armonización continua con un PEI adaptado al contexto y susceptible a la desescolarización, la tarea que deben cumplir el estudiantado para abordar con autonomía el proceso educativo y la importancia de que las familias sean preparadas por la misma escuela, para afrontar las necesidades que demanda la educación actual.
Pedagogías en tiempos inciertos: Valoración de identidades desde una mirada inclusiva
Authors: Aranda Parra Virginia Gabriela , Bravo Palma Daniela Paz , Rey Figueroa Valeria Isabel
Published: September 2021

La sociedad y la educación enfrentan hoy enormes desafíos. Si logramos sobreponemos a la emergencia sanitaria que nos ha impuesto el contexto pandémico podremos construir una nueva vida y sociedad, desde otros parámetros y epistemologías más solidarias y de justicia social. Por esta razón, compartimos esta sistematización de una experiencia pedagógica situada, que cuestiona la homogenización y descontextualización curricular, y pone al estudiantado, con sus intereses e inquietudes, en el centro. Desde nuestro ejercicio pedagógico propiciamos una nueva educación que sostiene una propuesta más humanista e inclusiva, según otros enfoques epistémicos y didácticos, los cuales implican la transformación de viejas prácticas reproduccionistas, asimilacionistas y segregadoras para transitar hacia una mayor comprensión de la diversidad. Por ello hemos construido y empleado prácticas pedagógicas dialógicas y participativas, diseñadas desde planteamientos críticos y con base en orientaciones contenidas en una pedagogía por proyecto, lo que permitió aventurarse en territorios complejos, diversos y cotidianos a partir de las experiencias del estudiantado. La presente innovación se desarrolló en un curso online, vía Zoom, ofrecido en el programa formativo Minor de la Universidad Metropolitana de Ciencias de la Educación, Santiago de Chile, sobre temáticas transversales, destinado a estudiantes de pedagogía. Esta propuesta de innovación, en escenarios pedagógicos tan complejos y desafiantes como el actual, permitió que el estudiantado, gracias al diálogo, identificara situaciones críticas y situadas, expresadas en tres propuestas de indagación.
La forma hexagonal regular de las células de las abejas como solución de algunos problemas de óptimo
Authors: Muntean Ioan
Published: September 2021

La economía de cera y la resistencia del panal, así como otras hipótesis plausibles (eliminación de espacios vacíos entre células cilíndricas y emulación aproximada del cuerpo de la abeja) conducen al primer problema de óptimo: entre todos los polígonos con n ≥ 3 lados circunscritos a un círculo de radio dado, determinar el polígonos P ∗ n que tiene perímetro más pequeño. Este es un problema de extremos con una condición isogonal que se resuelve por el método de multiplicadores de Lagrange. Se demuestra que P ∗ n es polígono regular y que n ∈ {3, 4, 6}. Finalmente, otro problema de mínimo conduce al resultado n = 6.
On space-time properties of solutions for nonlinear evolutionary equations with random initial data
Authors: Vaninsky Kyrill I.
Published: September 2021

We consider space-time properties of periodic solutions of nonlinear wave equations, nonlinear Schrödinger equations and KdV-type equations with initial data from the support of the Gibbs’ measure. For the wave and Schrödinger equations we establish the best Hölder exponents. We also discuss KdV-type equations which are more difficult due to a presence of the derivative in the nonlinearity.
The role of selenium and vitamin E in a Transylvanian enzootic equine recurrent rhabdomyolysis syndrome
Authors: Kósa Csaba Attila , Nagy Krisztina , Szenci Ottó , Baska-Vincze Boglárka , Andrásofszky Emese , Szép Róbert , Keresztesi Ágnes , Mircean Mircea , Taulescu Marian , Kutasi Orsolya
Published: September 2021

A severe form of recurrent exertional rhabdomyolysis occurs enzootically in a well-defined region of Transylvania, Harghita county. At the highest lying two settlements (more than 800 m above sea level), the prevalence of equine rhabdomyolysis is between 17 and 23%, while in the neighbouring villages in the valley it is less than 2%. The objective of our study was to clarify the role of selenium and vitamin E in the high prevalence of rhabdomyolysis in that region. Soil and hay samples were collected from each area to evaluate mineral content. Ten horses from the non-affected and 20 horses from the affected area were tested for serum selenium, vitamin E, glutathione peroxidase (GSH-Px), muscle enzymes, lactate and electrolytes. Hay samples collected from the affected area had lower selenium content. Horses in the affected regions had significantly lower serum selenium (P = 0.006) and GSH-Px levels than animals living in the non-affected regions. A good correlation between erythrocyte GSH-Px and serum selenium concentration could be demonstrated (r = 0.777, P < 0.001). Serum vitamin E levels were low independently of the origin of the horse. Based on our results, selenium deficiency possibly has a role in the Transylvanian enzootic equine recurrent rhabdomyolysis syndrome.
Establishment of an in vitro thrombogenicity test system with cyclic olefin copolymer substrate for endothelial layer formation
Authors: Lau Skadi , Liu Yue , Maier Anna , Braune Steffen , Gossen Manfred , Neffe Axel T. , Lendlein Andreas
Published: September 2021

In vitro thrombogenicity test systems require co-cultivation of endothelial cells and platelets under blood flow-like conditions. Here, a commercially available perfusion system is explored using plasma-treated cyclic olefin copolymer (COC) as a substrate for the endothelial cell layer. COC was characterized prior to endothelialization and co-cultivation with platelets under static or flow conditions. COC exhibits a low roughness and a moderate hydrophilicity. Flow promoted endothelial cell growth and prevented platelet adherence. These findings show the suitability of COC as substrate and the importance of blood flow-like conditions for the assessment of the thrombogenic risk of drugs or cardiovascular implant materials.

Graphic abstract
Melampaui Sekularisasi : Meninjau Ulang Peran Agama di Ruang Publik pada Era Disrupsi
Authors: Wahyuni Dwi
Published: September 2021

Is the theory of secularization dead? It seems not. The idea of secularization continues to develop and shows that secularization will never occur totally, but it will not be buried into a failed theory. However, since the world today is already in a reality far different from the era of the emerging secularization theory, secularization must be transcended. Nowadays, the world has entered a period of disruption marked by technological progress due to the Industrial Revolution 4.0. In this era, there have been significant changes in religious life. This article aims to complement the literature review regarding how religion should play a role in the public sphere in the era of disruption so that the benefits of religion can be felt in real life. Data collection was carried out using literature study techniques. Data analysis was carried out using the Miles and Huberman model. The results of this study indicate that religion does not have to be isolated from the public sphere, so far as the public sphere can be a common space to express the various religions that exist and religion is not only understood as symbolic, but is deeper in understanding the authenticity of religion. One important thing to avoid is the domination of one faith or one religious understanding within religion. The dynamics and dialectics of the various religious identities that exist can become cultural assets to build a better public life. Failure to neutralize the domination of one religion or religious understanding in religion in the public sphere will bring the world back to a dark past, full of wars and violence.
Global myocardial strain after the Ozaki aortic valve replacement in low-gradient critical aortic stenosis and heart failure: a case report
Authors: Rosseikin E. V. , Pavlyukova E. N. , Skidan V. I. , Kobzev E. E. , Potopalsky I. D.
Published: September 2021

The article presents the results of 1,5-year follow-up after surgery of critical aortic stenosis by the Ozaki technique in a patient with severe heart failure using data on global longitudinal strain.
Endovascular recanalization of chronic infrarenal aortic occlusion in a patient with two-vessel coronary artery disease: a case report
Authors: Chernyavsky M. A. , Belova Yu. K. , Komakha B. B. , Susanin N. V. , Vanyurkin A. G. , Soloviev V. A. , Kazantsev A. N.
Published: September 2021

A case report on endovascular treatment of occlusion of the infrarenal aorta and iliac arteries in a patient with hemodynamically significant two-vessel coronary artery disease is presented. After a thorough examination and assessment of surgical risks, a multidisciplinary team meeting chose a staged revascularization strategy: stage 1 — percutaneous coronary intervention in the left anterior descending artery and right coronary artery; stage 2 — endovascular recanalization of aorto-iliac segment occlusion using the kissing stents technique. There were no perioperative complications and the patient was discharged on the 4th day after surgery in a satisfactory condition. The choice in favor of these types of reconstruction and staged revascularization strategy was substantiated. A conclusion was made about the effectiveness and safety of implemented measures.
Meshalkin National Medical Research Center
Authors: Bogachev-Prokofiev A. V. , Sharifulin R. M. , Astapov D. A. , Ovcharov M. A. , Ovchinnikova M. A. , Lavinyukov S. O. , Sapegin A. V. , Afanasyev A. V. , Zheleznev S. I. , Nazarov V. M. , Chernyavsky A. M.
Published: September 2021

We present three cases of successful transatrial transcatheter valve-in-valve implantation in patients with bioprosthetic mitral valve dysfunction. Patients with a high surgical risk, with severe heart failure due to bioprosthetic mitral valve dysfunction, were implanted with transcatheter prostheses using the transatrial approach.

Transesophageal echocardiography and fluoroscopy-guided transcatheter mitral prosthetic valve positioning was performed. With a cardiac pacing at 180 bpm, a transcatheter valve was implanted. The transcatheter valves functioned properly after surgery. The patients were discharged in satisfactory condition.
Echocardiographic characteristics of COVID-19 pneumonia survivors three months after hospital discharge
Authors: Yaroslavskaya I. , Krinochkin D. V. , Shirokov N. E. , Krinochkina I. R. , Gultyaeva E. P. , Garanina V. D. , Korovina I. O. , Mamarina A. V. , Osokina N. A. , Melnikov N. N. , Trifanova T. А. , Gorbatenko E. A. , Gorbatenko E. А.
Published: September 2021

Coronavirus disease 2019 (COVID-19) is an infectious disease that affects almost all organs and systems. The main target is the respiratory system, but cardiovascular involvement is also common. Today, it is relevant to study the effect of complicated COVID-19 course on the patient’s cardiovascular system after hospital discharge — in particular, echocardiographic parameters.

Aim. To study the echocardiographic parameters of patients with COVID-19 pneumonia 3 months after discharge from the hospital.

Material and methods.The study included 106 patients with documented COVID-19 pneumonia. Patients underwent a comprehensive examination during hospitalization and 3 months ± 2 weeks after hospital discharge. The mean age of participants was 47±16 years (from 19 to 84 years), while 49% were women.

Results.Three months after discharge, the average body mass index of the subjects was 28,2±5,7 kg/m2. Obesity was noted in 37,1%, cardiovascular diseases — in 52%. According to echocardiography, the prevalence of right ventricular (RV) dilatation was 2,9%, a decrease in tricuspid annular plane systolic excursion (TAPSE) — 9,5%, grade ≥2 tricuspid regurgitation — 1,9%, pulmonary hypertension (pulmonary artery systolic pressure >36 mm Hg) — 3,8%. The mean value of RV global longitudinal myocardial strain (GLMS RV) and global longitudinal myocardial strain (GLES RV) was 19,6±4,5 and 20,6±4,6, respectively. We found moderate correlations between GLMS RV and blood flow time through the left ventricular outflow tract (OT) (r=-0,436), through the mitral valve (r=-0,390; both p<0,0001) and through the RVOT (r=-0,348; р=0,004), with cardiac index (CI) (r=0,316; p=0,009), as well as between GLES RV and blood flow time through the LVOT (r=-0,411; p<0,0001) and RVOT (r=-0,300; p=0,005), and with CI (r=0,302; p=0,004). At the same time, the correlation of GLES RV with RV fractional area change (FAC) was weak (r=-0,283; p=0,007), while there was no correlation with the TAPSE. In addition, correlation of GLMS RV with these parameters were not defined.

Conclusion.Three months after COVID-19 pneumonia, RV strain parameters were shown to have stronger relationships with time characteristics of flows in LVOT and RVOT, as well as with CI, than with such generally accepted characteristics of RV function as FAC and TAPSE.
Gestión y cooperación de la pequeña y mediana empresa textil
Authors: Pardo Martínez Luz Patricia , Montoya Agudelo César Alveiro ,   Universidad Cooperativa de Colombia, Muñoz Pardo Henry ,   Universidad Cooperativa de Colombia, Patiño Bohórquez Adriana Patricia ,   Universidad Cooperativa de Colombia, Bustos Zapata Ana María ,   Universidad Cooperativa de Colombia, Delgado Villalobos Sarielen ,   Universidad Cooperativa de Colombia, Pimiento Pulido Édgar Orlando ,   Universidad Católica de Colombia
Published: September 2021

This book is the result of the multicampus research “Management and cooperation of small and medium textile companies in the regional cluster Bogotá and Antioquia: Case study”, led by the Arte Solidario research group, from the city of Bogotá, and the Research Group in Organization Management (GDO), of the city of Medellín. The main objective of the project was “to establish the contribution made by the management and cooperation of small and medium-sized textile companies; from the articulating axis of shared value, in the achievement of development and social benefit. In the regional cluster: Bogotá and Antioquia (2015-2017)”.