bluuebunny/crossref_metadata_2025_split huggingface dataset:
Los infantes de Carrión y las hijas del Cid: su realidad histórica en relación con los personajes literarios
Authors: Luis Jiménez Isidro 
Published: July 2023

El artículo analiza la relación de los personajes de las hijas del Cid y los infantes de Carrión con sus equivalentes históricos, demostrando que dicho vínculo es casi inexistente. El trabajo se centra en el episodio de la afrenta de Corpes y, brevemente, explica por qué la práctica invención de los personajes tiene una gran relevancia narrativa en el Poema de Mío Cid.Palabras clave: Poema de Mío Cid, hijas del Cid, infantes de Carrión, geminación, figuras históricas.The Infants of Carrión and the daughters of the Cid: their historical reality in relation to the literary charactersAbstract: This article analyzes the relationship between the characters of the daughters of the Cid and the Infants of Carrión and their historical counterparts, demonstrating that such a link is almost nonexistent. The work focuses on the story of the shame of Corpes and briefly explains why the almost complete invention of the characters has a great narrative relevance in the Poema de Mío Cid .Key words: Poema de Mío Cid, daughters of El Cid, Infants of Carrion, gemination, historic counterparts.
Gestalten des Archivs
Authors: Brenneke Adolf , Schenk Dietmar , Hering Rainer 
Published: July 2023

Adolf Brenneke (1875–1946), Archivar und norddeutscher Landeshistoriker, ist vor allem ein Klassiker der Archivwissenschaft. Nach jahrzehntelanger archivarischer Praxis lehrte er seit 1931 an der preußischen Archivschule in Berlin-Dahlem. In Verbindung mit seiner Vorlesung befasste er sich historisch-typologisch mit „Gestalten des Archivs“ und entwarf, basierend auf dem Provenienzprinzip, eine archivische Ordnungslehre. Dabei griff er auf gedankliche Motive des Historismus zurück. So setzte er sich mit der Historik Johann Gustav Droysens, der Geschichtsauffassung Friedrich Meineckes und der geisteswissenschaftlichen Psychologie des Dilthey-Schülers Eduard Spranger auseinander. Bedingt durch die Zeitumstände des „Dritten Reiches“ konnte Brenneke seine archivwissenschaftlichen Studien bis zu seinem Tod wenige Monate nach Kriegsende nicht abschließen. Sein Schüler Wolfgang Leesch veröffentlichte Brennekes „Archivkunde“ jedoch 1953 in bearbeiteter Form.
Mit der vorliegenden Edition werden nun auch die originalen Manuskripte zugänglich gemacht. Im Mittelpunkt stehen die im Nachlass aufgefundenen „Archivartikel“ für ein nicht zustande gekommenes Sachwörterbuch für die Deutsche Geschichte. Der Archivwissenschaftler und -theoretiker Dietmar Schenk beleuchtet zudem in einem ausführlichen Nachwort die ideen- und wissenschaftsgeschichtlichen Kontexte.
PUBLIC RELATIONS AS A TOOL FOR FORMING THE REPUTATION CAPITAL OF ENTERPRISES IN TOURISM SPHERE
Authors: V. DMYTRUK  
Published: July 2023

Aim. The scientific research is devoted to the disclosure of the essence of "public relations", as one of the components of managerial technology in the tourism industry, as well as an important tool for the formation of their reputational capital. Methodology. The methodological basis of this scientific research is the work of foreign authors, available information of some government structures, as well as other sites. To solve the problems, a number of factors were considered which should be taken into account when introducing "public relations" into the activities of enterprises of the tourism sector, the volumes of tourist flows for 2013-2017 were analyzed and the results were summarized. The author believes that there is a need to build an updated structural model of the program "public relations" for tourism enterprises. Results. The author developed an updated structural model of the "public relations" program for tourism enterprises the introduction of which will in practice contribute to the formation of a higher level of their reputation capital and the individualization of relations with consumers. Scientific novelty. A special difference in the construction of programs "public relations" for enterprises in the sphere of tourism, in modern conditions of their functioning and development, the author considers it necessary to use an individual approach in determining the target audience, for which this program is designed. This need is due to the fact that key messages transmitted to specific target audiences in public relations programs may not be the same for all consumer audiences. Such programs should take into account not only the intentions and objectives of the tourist enterprise but also be balanced in accordance with the goals of the specific consumer audience to which the program is addressed. Practical significance. The implementation in practice of tourism enterprises offered by the author of the revised structural model program "Public Relations" will strengthen their reputational capital in the tourism market and will provide a higher level of individualization relationship with consumers and other interested audiences.
FORMATION OF THE DATASET AND SELECTION OF PARAMETERS FOR THE BUILDING OF THE ARTIFICIAL NEURAL NETWORKS OF THE ENTERPRISES FINANCIAL SUSTAINABILITY CLASSIFICATION
Authors: L. M. DEBUNOV  , A. G. YAKOVENKO  
Published: July 2023

The purpose. The article is devoted to the preparatory actions preceding of construction of a fully-connected three-layer artificial neural network of direct distribution, which should classify the enterprises for their financial sustainability. Methods. To prepare for the construction of an artificial neural network are presented a range of reasoned judgments and solutions, based on the results of experiments on building a neural network of financial sustainability. The Results. The article presents ways to obtain a dataset for training an artificial neural network of financial sustainability of Ukrainian enterprises. There are presented the optimal architectural parameters and recommendations about the neural network teaching. The attention was paid to such parameters of the artificial neural network as the type of neural network, the error function, the activation function on the hidden and on the initial layers, the learning algorithm, the parameters of initial weight initialization. The application of the recommendations from the article allows constructing an artificial neural network, which classifies enterprises for their financial sustainability with sufficiently high accuracy. Particular attention is paid to selecting neuron activation functions and to the distribution of a general dataset into training, testing and validation subsets. Scientific novelty. The use of 17 financial indicators as factors for modeling financial sustainability is proposed, what should describe this complex concept and allow to obtain maximum accuracy of classification. The article substantiates the use of the construction parameters and training of the neural network, which are best suited for the use of these factors. The practical significance. Using the article`s material will help with building of the artificial neural network of financial sustainability, which can be used to classify enterprises as "financially sustainable" or "potential bankrupt" and can be used by financial and credit institutions, investment funds and state authorities when assessing the risk of bankruptcy of an enterprise. Such a neural network is designed to automate the work of an experienced financial analyst when checking the company for financial sustainability.
Influence of protein-peptide bioregulator isolated from bovine sclera and incorporated into an albumin-based cryogel on the sclera in a model cultivation of a posterior eye segment
Authors: Yamskova O. V. , Krasnov M. S. , Sidorsky E. V. , Lozinsky V. I. 
Published: July 2023

Delivering bioactive substances to certain spots in the human and animal body is a crucial task. To address this problem, we have developed a delayed-release bioactive substance carrier – an albumin-based cryogel obtained by cryostructuring. It was tested on an organotypic culture model of the posterior eye segment of a newt.Objective: to study the effectiveness of porous albumin-based cryogel obtained by cryostructuring and loaded with a bioregulator isolated from bovine sclera in different quantities in maintaining eye tissue integrity and preserving Iberian ribbed newt fibroblasts on an organotypic culture model.Materials and methods. Albumin sponges were obtained after being denatured at temperatures –15 °C, –17.5 °C, and –20 °C, with albumin levels 40 mg/mL, 50 mg/mL, and 60 mg/mL in a thermostatic cooler. Their modulus of elasticity was measured. Eye tissues were isolated from adult sexually mature Iberian ribbed newts of both sexes. The posterior segment of each eye was placed on a sponge sample of albumin cryogel in penicillin vials, sealed and placed in a thermostat. At the end of cultivation, the samples were fixed, washed, dehydrated, and embedded in paraffin. Paraffin sections were made, followed by staining. A Leica microscope (Germany) with an Olympus DP70 camera (Japan) was used to view histological sections. Fibroblast count in the histological sections was estimated using the ImageJ program.Results. Cryogel with initial albumin solution levels of 50 mg/mL obtained at –20 °C with 4.50 kPa elastic modulus, was chosen for the organ culture experiment. Histological studies showed that eye tissue integrity was maintained in the experiment when albumin-based scaffold was loaded with the bioregulator at doses of 2.46 × 10–5, 2.46 × 10–7, 2.46 × 10–9, 2.46 × 10–13, 2.46 × 10–15 μg. Moreover, the statistically significant difference for fibroblast count per unit area in the sclera partially correlates with the qualitative state of the posterior eye tissue itself. Groups where bioregulator isolated from the sclera had a dose of 2.46 × 10–7, 2.46 × 10–9 and 2.46 × 10–15 μg, showed the best result as compared with the control group.Conclusion. Albumin-based scaffold as a carrier with a bioregulator adsorbed on it (doses of 2.46 × 10–5, 2.46 × 10–7, 2.46 × 10–9, 2.46 × 10–13, 2.46 × 10–15 μg) is effective in maintaining eye tissue integrity and preserving Iberian ribbed newt fibroblasts. Albumin cryogen is an effective carrier for delayed release of bioactive substances.
Percutaneous left ventricular assist device as a short-term mechanical circulatory support before heart transplantation in patients with high pre-transplant pulmonary hypertension (series of clinical cases)
Authors: Poptsov V. N. , Slobodyanik V. V. , Spirina E. A. , Petukhov N. V. , Solodovnikova A. K. , Voronkov V. Yu. , Dogonasheva A. A. , Skokova A. A. 
Published: July 2023

Federation In certain categories of patients with end-stage heart failure (HF), short-term mechanical circulatory support (MSC) is successfully used as a mechanical «bridge» to heart transplantation (HTx). In predominantly left-ventricular (LV) dysfunction, the use of isolated coronary artery bypass, especially amidst high pulmonary hypertension (PH), seems to be a more physiological method of short-term MSC.Objective: to present the results of a series of clinical cases of the use of percutaneous left ventricular assist device (pLVAD) before HTx in potential recipients with predominantly LV dysfunction and concomitant high PH.Materials and methods. Three potential heart recipients with predominantly left-sided HF and high pre-transplant PH (pulmonary vascular resistance, PVR, 4.7–6.6 Wood units) who required MSC due to progression of hemodynamic disorders were included in the study. A standard venous extracorporeal membrane oxygenation (ECMO) cannula (26 F) was used for percutaneous left atrial-femoral artery (LA–FA) bypass. The cannula was passed from the transfemoral route through the interatrial septum into the left atrial cavity. A paracorporeal centrifugal pump provided blood injection through a standard arterial ECMO cannula (15 F).Results. pLVAD unloaded the left ventricle effectively (PCWP reduced from 27–32 to 15–20 mmHg), reduced pre-transplant PH (mean pulmonary artery pressure (mPAP) reduced from 45–53 to 28–33 mmHg) and improved systemic hemodynamics (cardiac index (CI) increased from 1.8–1.9 to 2.1–2.6 l/min/m2 and mean arterial pressure (mAP) from 56–59 to 70–75 mmHg). All these created the prerequisites for subsequent successful HTx. Against the background of pLVAD, transpulmonary pressure gradient (TPG) decreased from 15–25 to 13–15 mmHg, and PVR decreased from 4.7–6.6 to 2.7–3.4 Wood units. pLVAD flow rate was 2.9–3.8 L/min or 1.38–1.83 L/min/m2 at 4700–7100 rpm. pLVAD duration ranged from 4 (n = 1) to 7 (n = 2) days. All patients underwent successful HTx.Conclusion. pLVAD is a highly effective method of short-term MSC in potential recipients with predominantly LV dysfunction and concomitant high PH, leading to rapid regression of the dysfunction against the background of left ventricular unloading. This short-term MSC technique can be successfully realized using standard ECMO cannulas and centrifugal pumps of any modification, without requiring additional special equipment.
Artificial nerve conduit for guiding peripheral nerve growth (cadaveric study)
Authors: Fedyakov A. G. , Nemets E. A. , Dreval O. N. , Gorozhanin A. V. , Sidneva L. A. , Plieva Z. H. , Razin M. A. , Perova N. V. , Sevastianov V. I. 
Published: July 2023

At present, the search for effective ways of restoring peripheral nerves with anatomical damage continues. Autoplasty still remains the gold standard, which, however, is not without its drawbacks. The use of nerve implants for promoting directional axon growth is essential and promising.Objective:to study the biomechanical properties of laboratory samples of an artificial nerve conduit (NGC) made of hybrid biomaterials and to, on cadaveric material, assess the technical feasibility of using them in surgical practice to repair extended peripheral nerve defects.Material and methods. The objects of the study were three electrospun NGC samples: from synthetic material (polycaprolactone, PCL) and hybrid biomaterials (PCL + gelatin or PCL + collagen). The work compared the physical and mechanical properties of NGC: stiffness, plasticity, elasticity, brittleness, resistance to chemical attack, their ability to be impregnated with liquid media, permeability, possibility of making an anastomosis between the implant and the nerve during surgical procedure. Cadaveric material was the object of the study: we used a dissected superficial sensory branch of the human right radial nerve, 2 mm in diameter, isolated on the forearm, about 12 cm in length, because it most corresponded to the diameter of the NGC samples tested. After surgery, the echogenic features of the implants and their anastomoses with the nerve were assessed by ultrasound imaging.Results.It was found that hybrid NGC samples, based on their biomechanical properties, are fundamentally suitable for use in surgical practice, to ensure growth and replacement of a peripheral nerve defect. However, the best composition of a nerve guide can be established after comparative preclinical study of the biocompatible and functional properties of hybrid material samples.Conclusion.The physical and mechanical properties of the investigated NGC samples made of hybrid biomaterials meet the technical requirements for implantable nerve conduits for surgical application.
Differential analysis of codaQusing similar microearthquakes in seismic gaps. Part 2: Application to seismograms recorded by the Parkfield High Resolution Seismic Network
Authors: Antolik Michael , Nadeau Robert M. , Aster Richard C. , McEvilly Thomas V. 
Published: July 2023

AbstractNearly two-thirds of the microseismicity occurring at Parkfield, California, consists of repeating clusters of closely located events exhibiting waveform cross-correlation values exceeding 0.95. This observation, coupled with a high probability for an M ≈ 6 earthquake within the next decade (Working Group on California Earthquake Probabilities, 1988), make this segment of the San Andreas fault system a prime location to search for temporal variations in coda Q associated with crustal changes that may occur during the earthquake cycle. The coda comparison analysis method described in Part 1 of this study (Aster et al., 1996) is applied to data from four borehole stations of the Parkfield High Resolution Seismic Network (HRSN) for the period January 1987 through February 1994. We examine 21 of the nearly 300 repeating clusters observed to date. The restriction of the data set to only the most highly similar sources is observed to be critical; small differences in the source process, even for event pairs with centroid locations within approximately 20 m, significantly increase the spurious noise level in the parameter estimates. Absolute 68% confidence bound estimates obtained on the repeatability of coda Q for all microearthquake pairs are ±10% for frequencies below 20 Hz. Tighter constraints are obtainable by reconstructing the temporal history of coda Q from the first difference measurements between microearthquake pairs. These functional reconstructions show that the mean value of coda Q has not varied by more than approximately 5% from 3 to 30 Hz at the 1σ level during the study period. However, other observables, such as an increased level of microseismicity, suggest that a preparatory stage for the next Parkfield earthquake has begun, indicating that coda Q is so far showing no sign of sensitivity to preparatory processes at Parkfield.
Assessment of School Staff Knowledge and Perceptions of Student E-cigarette Use and Resource Needs, and E-cigarettes Confiscated at 12 North Carolina High Schools — 2019
Authors: Tanz Lauren J. , Heck Courtney , Herzig Carolyn T.A. , Ranney Leah M. , Herndon Sally , Martin Jim , Hast Marisa , McGowan Eileen , Baler Guido , Shamout Mays , King Brian A. , Tynan Michael A. , Kansagra Susan M. 
Published: July 2023

Background E-cigarettes are the most commonly used tobacco product among US youth and are regularly used on school grounds. We assessed school staff’s awareness of students’ e-cigarette use, response by schools, and resources needed to address use, and examined e-cigarettes confiscated by school staff in North Carolina to guide prevention and identify needed resources. Methods In May 2019, staff from a random sample of 25 of 451 North Carolina public and charter high schools were invited to complete an online survey and semistructured interview; 12 schools consented to ≥ 1 component (survey, N = 514; interviews, N = 35). Staff knowledge and perceptions of students’ e-cigarette use and school tobacco policies were assessed, including school efforts to address e-cigarette use. E-cigarette products confiscated by nine schools from students during the 2018–2019 school year were collected. Limitations Only 12 public high schools participated, and these schools might not be representative of all North Carolina high schools. Quantitative surveys were not collected from all staff at participating schools; however, the response rate was 62% and included different staff positions and both urban and rural schools. Finally, e-cigarette products collected by schools might not be representative of all devices used by students. Results Among surveyed staff, 33% observed students using e-cigarettes on school grounds; 86% believed e-cigarette use somewhat or largely contributes to learning disruptions. Overall, 94% of respondents knew their school’s policy prohibits student e-cigarette use on school grounds, and 57% were not confident their school has resources to help students quit. From 35 interviews, themes included concern that schools’ tobacco-free policies do not deter use and additional resources are needed to address e-cigarette use in schools. Of 336 collected devices, there were different e-cigarette types and most (65%) e-liquid bottles were flavored. Conclusion Efforts are warranted to incorporate evidence-based curricula; educate staff, parents, and youth regarding health risks of e-cigarette use; and help youth quit e-cigarettes.
Etude des constantes biologiques du sang du cerf rusa (<em>Cervus timorensis russa</em>) en Nouvelle-Calédonie. II. Les constantes biochimiques
Authors: Audigé Laurent 
Published: July 2023

Depuis le début de l’année 1987, l’élevage du cerf rusa (Cervus timorensis russa) se développe en Nouvelle-Calédonie. En 1988, au cours d’une opération d’abattage en élevage, l’auteur a réalisé près de 90 prélèvements de sang pour définir les constantes biologiques du sang de cette espèce. En biochimie, il a été recherché le taux d’urée (6,8 mmol/1), le taux de créatinine (151,7 mmol/L), l’activité de la créatine kinase (295,2 U/L), celle des transaminases (ALAT : 60,1 UI/L ; ASAT : 22,3 UI/L) et des phosphatases alcalines (115,1 U/L), le taux de bilirubine totale (2,76 µmol/L), le taux de protéines totales (61,4 g/L) et celui d’albumine (32,6 g/L), le taux de calcium (2,42 mmol/L) et celui de phosphore (3,08 mmol/L). L’étude a révélé des variations de ces paramètres en fonction de certains critères physiologiques et des conditions de prélèvement.
Pengaruh Waktu Leaching Ekstraksi Emas (Au) Limbah Elektronik Prosesor Komputer Menggunakan Reagen Organik Tiourea
Authors: Mirahati Riria Zendy , Probowati Dyah , Pratomo Ilham 
Published: July 2023

Perkembangan dunia teknologi telah mempengaruhi banyak aspek dalam kehidupan manusia, berbagai alat ataupun sistem telah dibuat untuk mempermudah kehidupan. Hal itu terlihat dari banyaknya barang elektronik yang diproduksi dan digunakan setiap harinya. Manusia sudah mempunyai ketergantungan yang tinggi terhadap barang-barang elektronik tersebut. Masa pakai dari barang elektronik tidak dapat bertahan lama dan munculnya produk dengan generasi baru membuat barang tersebut terlihat cepat usang dan tertinggal. Hal tersebut mendorong konsumen untuk mengganti barang elektroniknya dengan yang baru dalam kurun waktu yang lebih cepat. Akibatnya, terjadi penumpukan limbah elektronik (e-waste) yang tidak dapat dihindari lagi. Tujuan penelitian ini untuk menganalisis dan mencari waktu dengan hasil recovery emas tertinggi pada leaching emas (Au) pada limbah prosesor komputer menggunakan larutan organik Tiourea. Adapun metode yang digunakan pada penelitian ini adalah leaching atau pelindihan. Sampel dilakukan preparasi dengan melarutkan Tiourea, sehingga akan terbentuk endapan yang nantinya akan dipisahkan dan selanjutnya dilakukan pengujian Atomic Absorption Spectrophotometer (AAS). Variasi waktu leaching yang digunakan yaitu 1, 2, 3, 4 dan 5 jam. Recovery emas atau Au yang diperoleh sebesar 8,12% selama 1 jam leaching, 5,80% pada 2 jam leaching, 5,74% pada 3 jam leaching, 4,99% pada 4 jam leaching dan 4,36% pada 5 jam leaching. Dari parameter lamanya waktu pelarutan Tiourea terhadap recovery emas (Au) pada penelitian ini, menunjukkan pada 1 jam leaching menghasilkan nilai recovery yang paling tinggi sebesar 8,12% dengan kadar emas (Au) sebesar 1,0253 ppm.
Kata kunci: leaching emas (Au), e-waste, recovery, Tiourea