bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ultrastructural pathology of bioprosthetic heart valves with infectious endocarditis
Authors: Mukhamadiyarov R. A. , Milto I. V. , Kutikhin A. G. 
Published: September 2021

Aim. To study the ultrastructure of mitral bioprosthetic heart valves (BHVs) which failed due to infective endocarditis.Materials and Methods. Here we examined 7 ethylene glycol diglycidyl ether-treated xenopericardial BHVs excised during repeated BHV replacement because of prosthetic endocarditis. After being fixed in formalin and postfixed in osmium tetroxide, BHVs were dehydrated and stained in uranyl acetate with the subsequent embedding into epoxy resin, grinding, polishing, and lead citrate counterstaining. Upon the sputter coating with carbon, we visualised the BHV microanatomy by means of backscattered scanning electron microscopy at 15 kV voltage.Results. The extracellular matrix underwent degradation and disintegration resulting in loosening, fragmentation, and reduction in the electron density of collagen and elastin fibers. We observed a number of recipient cells (macrophages, multinucleated giant cells, neutrophils, endothelial cells and smooth muscle cells) within the BHVs. The highest number of cells was localized on the valve surfaces. The localization of the recipient cells on the ventricular and atrial surfaces was different. The central part of the valves was abundantly populated by macrophages.Conclusion. Prosthetic endocarditis is accompanied by the migration of recipient cells into the BHV structure, which is the consequence of surface and extracellular matrix disintegration.
Critical obstetric conditions during pandemic (COVID-19) and pre-pandemic years
Authors: Belokrinitskaya T. E. , Iozefson S. A. , Frolova N. I. , Brum O. Yu. 
Published: September 2021

Aim. To assess the structure of critical obstetric conditions and maternal mortality in Transbaikal Region in pandemic (COVID-19) and pre-pandemic years (2020 and 2019, respectively).Materials and Methods. We retrospectively analysed “near miss” (NM) and maternal deaths (MD) in 2019 and 2020, further calculating the severe maternal outcome ratio (SMOR), the summary indicator which includes both NM and MD per 1000 live births.Results. In a pandemic year (2020), we observed an increase in SMOR in comparison with a pre-pandemic year (3.0 vs 2.0, respectively). In 2019, maternal mortality was exclusively caused by obstetric complications, while extragenital pathology (cardiovascular disease and COVID-19) was responsible for that in 2020. However, the main causes of «near miss» in 2019 and 2020 were similar, including obstetric haemorrhage because of placental abruption and severe pre-eclampsia. Maternal near-miss mortality ratio (MNM/MD) increased from 7.3: 1 in 2019 to 11.3: 1 in 2020, and mortality index (MD/(MNM + MD) × 100) reduced from 12.0 to 8.1. Therefore, fewer women with life-threatening conditions died in 2020 as compared with 2019, indicating a better quality of obstetric care.Conclusion. Analysis of the critical obstetric conditions can probably find regional issues of maternal healthcare during the COVID-19 pandemic and propel the policy makers to find additional resources to minimise maternal morbidity and mortality.
Metabolic and radiofrequency features of reactive oxygen species and nitric oxide effects on biological tissue ex vivo
Authors: Martusevich A. K. , Galka A. G. , Golygina E. S. , Fedotova A. S. 
Published: September 2021

Aim. To assess the effects of reactive oxygen species and nitric oxide on the scar tissue ex vivo.Materials and Methods. The study was performed using fragments of scar tissue (n = 10) removed intraoperatively in patients with Dupuytren's contracture. Each fragment was divided into 3 equal segments: 1) control; 2) treated with singlet oxygen for 5 minutes; 3) treated with nitric oxide (20 ppm) for 5 minutes. Upon the indicated treatment, we evaluated the dielectric properties of the tissue employing nearfield resonant microwave sensing using a customised software package (Institute of Applied Physics, Russian Academy of Sciences). Then, each segment was homogenised and the parameters of oxidative metabolism (intensity of free radical oxidation and total antioxidant activity) were measured in homogenates by Fe-induced biochemiluminescence.Results. Treatment of scar tissue fragments by singlet oxygen and nitric oxide altered the dielectric properties of the tissue and the intensity of free radical oxidation. Singlet oxygen action moderately increased the dielectric permittivity of the tissue and rendered a balanced stimulating effect on proand antioxidant systems. Nitric oxide significantly augmented dielectric permittivity and conductivity and raised the antioxidant potential of the tissue.
PENGARUH KOMPOSISI MEDIA TANAM TERHADAP PERTUMBUHAN SETEK EMPAT KLON UBI KAYU (Manihot esculenta Crantz)
Authors: Yelli Fitri , Giannini Topan Kurniawan , Utomo Setyo Dwi , Edy Akari 
Published: September 2021

Pengaruh Komposisi Media Tanam Terhadap Pertumbuhan Setek Empat Klon Ubi Kayu (Manihot Esculenta Crantz). Penelitian ini bertujuan untuk menentukan komposisi media tanam yang tepat untuk pertumbuhan setek ubi kayu, menentukan klon ubi kayu yang memiliki pertumbuhan terbaik dan mengetahui apakah respon setek ubi kayu terhadap komposisi media tanam ditentukan oleh klon yang digunakan. Penelitian dilaksanakan di Rumah Kaca Fakultas Pertanian, Universitas Lampung dari bulan April 2020 sampai bulan Juni 2020. Penelitian disusun secara faktorial dalam rancangan acak lengkap (RAL) dengan 3 ulangan. Faktor pertama adalah komposisi media (tanah+pasir+sekam padi dan tanah+pasir+kompos) dan faktor kedua adalah klon (UJ-3, UJ-5, BW1, Unila UK-1). Hasil penelitian menunjukkan (1) komposisi media menghasilkan pertumbuhan yang sama. (2) Klon memberikan respons yang sama terhadap komposisi media.
EFEKTIVITAS PEMBERIAN BAHAN PEMBENAH TANAH TERHADAP DISTRIBUSI AGREGAT DI LAHAN KERING MASAM PADA PERTANAMAN KEDELAI
Authors: Septiana Liska Mutiara , Indhira Hilda , Afandi Afandi , Banuwa Irwan Sukri 
Published: September 2021

Bahan pembenah tanah seperti Batuan fosfat alam (BFA), biochar, organonitropos, dan pupuk kandang sapi dapat dijadikan bahan untuk meningkatkan produksi tanaman kedelai dilahan kering masam. Pemberian bahan pembenah tanah ini dapat mempengaruhi sifat fisik tanah khususnya agregat tanah yang akan mempengaruhi produksi tanaman. Agregat tanah mempengaruhi kemampuan tanah dalam menyediakan ruang pori untuk penyediaan air, udara dan unsur hara. Pemberian BFA dapat memperbaiki keadaan lahan kering masam dengan melepas unsur P secara perlahan. Sedangkan, bahan pembenah tanah lainnya memiliki pengaruh jangka panjang untuk meningkatkan kesuburan tanah. Penelitian ini bertujuan untuk mengetahui evektivitas pengaplikasian BFA dan bahan pembenah tanah lainnya yaitu Biochar, organonitropos, dan pupuk kandang sapi terhadap distribusi agregat tanah, serta mengetahui interaksi antara aplikasi BFA dan bahan pembenah tanah lainnya terhadap distribusi agregat tanah. Penelitian dirancang menggunakan rancangan acak kelompok (RAK) dengan 2 faktor dan 3 ulangan, faktor pertama adalah pemupukan P dengan 2 taraf yaitu tanpa perlakuan (P0) dan BFA (P1) 5 ton ha-1, faktor kedua adalah bahan pembenah tanah dengan 3 taraf yaitu tanpa perlakuan (B0), biochar (B1) 5 ton ha-1, organonitrofos (B2) 10 ton ha-1, dan pupuk kandang sapi (B3) 10 ton ha-1.Variabel pengamatan meliputi jumlah agregat, partikel dan tekstur, dan C-organik tanah. Keragaman data dianalisis melalui uji homogenitas ragam menggunakan uji Barlett dan adivitas data diuji dengan uji Tukey. Data dianalisis dengan analisis ragam dan dilanjutkan dengan uji BNT. Hasil penelitian menunjukkan bahwa aplikasi BFA dan bahan pembenah tanah lainya berpengaruh nyata pada distribusi jumlah agregat pertanaman kedelai, serta terjadi interaksi antara keduanya.
PENGARUH DOSIS BIONEMATISIDA JAMUR Purpureocillium lilacinum (Syn. Paecilomyces lilacinus) ISOLAT B01TG BERBAHAN PEMBAWA LIMBAH PERTANIAN TERHADAP KEEFEKTIFANNYA DALAM MENGENDALIKAN Meloidogyne spp.
Authors: Fiandani Ambar , Swibawa I Gede , Fitriana Yuyun , Purnomo Purnomo 
Published: September 2021

Penelitian ini bertujuan untuk mempelajari pengaruh dosis bionematisida jamur Purpurecilum lilacinum (Syn. Paecilomyces lilacinus) isolat B01TG berbahan pembawa limbah pertanian terhadap keefektifannya untuk mengendalikan serangan nematoda puru akar Meloidogyne spp. Percobaan yang berlangsung bulan Februari - Juni 2019 di rumah kaca Fakultas Pertanian Universitas Lampung, menggunakan Rancangan Acak Lengkap (RAL), dengan 5 perlakuan tingkat dosis bionematisida dan 5 ulangan. Dosis bionematisida yang diuji yaitu 0 g, 5 g, 10 g, 20 g dan 40 g per tanaman. Bionematiaida diaplikasikan 3 hari sebelum tanaman tomat ditransplanting. Satu minggu setelah transplanting, tanaman tomat kemudian diinfestasi 2000 telur nematoda puru akar. Data pertumbuhan tanaman yang meliputi tinggi tanaman, jumlah daun, bobot biomassa basah dan produksi, serta tingkat kerusakan akar dianalisis ragam dan dilanjutkan dengan pemisahan nilai tengah menggunakan uji BNT pada taraf nyata 5%. Hasil penelitian menunjukkan bahwa dosis bionematisida mempengaruhi pertumbuhan tanaman dan kerusakan akar. Pertumbuhan tanaman yang diberi perlakuan 40 g bionematisida lebih baik daripada pertumbuhan tanaman yang diberi bionematiaida dengan dosis yang lebih rendah. Kerusakan akar tanaman tomat akibat serangan Meloidogyne spp. lebih rendah pada tanaman tomat yang diberikan perlakuan 20 g dan 40 g daripada kerusakan akar tanaman yang diberi perlakuan bionematisida dengan dosis yang lebih rendah.
PENGARUH PUPUK ORGANIK DAN PUPUK HAYATI TERHADAP POPULASI DAN BIOMASSA CACING TANAH PADA PERTANAMAN TOMAT CHERRY (Lycopersicum esculentum. Mill) DI DESA SUKBANJAR KECAMATAN GEDONG TATAAN
Authors: Nurlita Nadya , Yusnaini Sri , Hendarto Kus , Arif M. A. Syamsul 
Published: September 2021

Cacing tanah merupakan salah satu biota tanah yang sangat berperan aktif dalam indikator kesuburan tanah. Pupuk organik dan pupuk hayati merupakan pensuplai hara yang dibutuhkan bagi tanah untuk tanaman dan aktivitas organisme di dalam tanah. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian pupuk organik, aplikasi pupuk hayati, dan interaksi antara kedua pupuk tersebut terhadap populasi dan biomassa cacing tanah pada pertanaman tomat cherry (Lycopersicum esculentum Mill). Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) yang disusun secara faktorial, faktor pertama jenis pupuk organik (K) dan faktor kedua konsentrasi pupuk hayati (M), setiap perlakuan diulang sebanyak tiga kali sehingga diperoleh 36 petak satuan percobaan. Data yang diperoleh dianalisis dengan sidik ragam pada taraf 5% yang terlebih dahulu diuji homogenitas ragamnya dengan menggunakan Uji Bartlett dan additivitasnya diuji dengan Uji Tukey. Rata-rata nilai tengah dari data diuji dengan Uji BNT pada taraf 5%. Untuk mengetahui hubungan antara variabel pendukung dengan variabel utama dilakukan uji korelasi. Hasil penelitian menunjukan bahwa perlakuan pupuk kandang ayam (K1) meningkatkan populasi dan biomassa cacing tanah pada pengamatan 45 HST di kedalaman 0-15 cm dan 15-30 cm dan pada pengamatan 90 HST di kedalaman 0-15 cm, sedangkan pemberian pupuk hayati tidak berpengaruh nyata terhadap populasi dan biomassa cacing tanah pada pengamatan 45 HST dan 90 HST di kedalaman 0-15 cm dan 15-30 cm. Pemberian pupuk organik dan pupuk hayati tidak terjadi interaksi pada pengamatan 45 HST dan 90 HST di kedalaman 0-15 cm dan 15-30 cm. Berdasarkan identifikasi didapatkan bahwa semua cacing tanah setiap kedalaman pada pertanaman tomat cherry didapatkan cacing tanah tergolong dalam famili megascolicidae.
Fostering Czech firms? innovation performance through efficient cooperation
Authors: Prokop Viktor , Kotkova Striteska Michaela , Stejskal Jan 
Published: September 2021

Research background: The business climate development and the stage of innovation systems? transformation are very similar in many Central and Eastern European countries, making it necessary to study these specific economies. These economies are at a different level of transformation, and their governments are trying to support the development of a knowledge-based economy, the creation of innovation systems, and collaboration among different types of entities. These governments need feedback in the form of research into the impacts of public funding on innovation activities through the influence of basic research and cooperation-based resources in individual countries.
Purpose of the article: This paper focuses on the examination of (i) the influence of national and European subsidies on innovation performance in manufacturing firms in the Czech Republic and (ii) impacts of knowledge- and cooperation-based resources on innovation activities in Czech manufacturing.
Methods: The latest available data from the Community Innovation Survey was used for analyses realized by different regression models. The proposed research models were gradually created to verify the influence of pro-innovation factors (expenditures on in-house and external R&D and on the acquisition of external tangible and intangible sources, cooperation with different partners and innovation) and public (national and/or European) funding of firms? innovation performance within the Czech manufacturing industry.
Findings and value added: The results have showed that there is a need to focus on direct and indirect effects of selected innovation determinants; we have also identified the crucial role of cooperation (specifically with government, public, or private research institutes) as a mediating variable within innovation processes. The results have also evidenced that public funding affects the efficiency of knowledge- and cooperation-based resources and amplifies the impact on firms? innovation performance differently. Whereas subsidies from national budgets do not significantly influence the innovation performance of Czech manufacturing firms, European subsidies, on the other hand, significantly increase firms? innovation performance. A long-term contribution of this paper is the significant completion of the theory of policy implications that may be applicable in a broad international context beyond the borders of the Czech Republic. This study significantly contributes to the ongoing discussion about (i) the significance of public financial subsidies from both national and European funds and (ii) the effects of cooperation and R&D on firms? innovation performance within ?catching-up? in Central and Eastern Europe.
Application of Fuzzy Inference System in the Prediction of Air Quality Index
Authors: Shafii Nor Hayati , Nur Aini Mohd Ramle  , Alias Rohana , Diana Sirmayunie Md Nasir  , Nur Fatihah Fauzi  
Published: September 2021

Air pollution is the presence of substances in the atmosphere that are harmful to the health of humans and other living beings. It is caused by solid and liquid particles and certain gases that are suspended in the air. The air pollution index (API) or also known as air quality index (AQI) is an indicator for the air quality status at any area. It is commonly used to report the level of severity of air pollution to public and to identify the poor air quality zone. The AQI value is calculated based on average concentration of air pollutants such as Particulate Matter 10 (PM10), Ozone (O3), Carbon Dioxide (CO2), Sulfur Dioxide (SO2) and Nitrogen Dioxide (NO2). Predicting the value of AQI accurately is crucial to minimize the impact of air pollution on environment and human health. The work presented here proposes a model to predict the AQI value using fuzzy inference system (FIS). FIS is the most well-known application of fuzzy logic and has been successfully applied in many fields. This method is proposed as the perfect technique for dealing with environmental well known and tackling the choice made below uncertainty. There are five levels or indicators of AQI, namely good, moderate, unhealthy, very unhealthy, and hazardous. This measurement is based on classification made from the Department of Environment (DOE) under the Ministry of Science, Technology, and Innovation (MOSTI). The results obtained from the actual data are compared with the results from the proposed model. With the accuracy rate of 93%, it shows that the proposed model is meeting the highest standard of accuracy in forecasting the AQI value.
IMAGINATION UND WISSEN ÜBER DIE NACHBARVÖLKER IN DER RUMÄNIENDEUTSCHEN LITERATUR NACH DEM ERSTEN WELTKRIEG
Authors: BALOGH András F. 
Published: September 2021

Imagination and Knowledge about the Neighbouring Peoples in the German Literature in Romania after the First World War. The starting point of this paper consists in adapting the ideas formulated by the cultural turn, according to which culture is a product of a dynamic process. After the First World War, a new cultural field was formed through a very fast process in the micro-society of German-speaking people in Transylvania and Banat. This cultural field was mostly influenced by the newspapers and cultural periodicals (Klingsor, Siebenbürgisch-Deutsches Tageblatt, Temeswarer Zeitung), by ecclesiastical discourse and by the speeches given by the Saxon and Swabian politicians. The literature of this period illustrates a very intense life; several texts deal with either the problems of time or describe a glorious past. The most famous authors (Adam Müller Guttenbrunn, Karl von Möller, Adolf Meschendörfer, Heinrich Zillich) are in the spotlight of public life. This article’s case studies are taken from the literature of Transylvania. In general, it can be said that the representation of Romanians is positive, that of Hungarians is to some degree negative, while Jews are rarely represented.
REZUMAT. Imaginar și cunoștințe despre popoarele învecinate în literatura de expresie germană din România după Primul Război Mondial. Punctul de plecare al lucrării constă în adaptarea ideilor formulate de turnura culturală, conform căreia cultura este produsul unui proces dinamic. După Primul Război Mondial, un nou câmp cultural se formează într-un proces foarte rapid. Este şi cazul microsocietăţii germane din Transilvania și Banat, care este influențată de revistele și cotidienele timpului (Klingsor, Siebenbürgisch-Deutsches Tageblatt, Temeswarer Zeitung), de discursul ecleziastic și de politicienii sași și șvabi. Literatura prezintă în perioada abordată o viață foarte intensă; apar mai multe texte care tratează problemele timpului ori descriu un trecut glorios. Autorii cei mai cunoscuţi (Adam Müller Guttenbrunn, Karl von Möller, Adolf Meschendörfer, Heinrich Zillich) se află în punctul de focalizare a vieții publice. Studiile de caz sunt luate din literatura din Transilvania. În general, se poate afirma că imaginea românilor este pozitivă, a maghiarilor apare cu uşoare tente negative, iar evreii sunt rareori reprezentaţi.
Cuvinte-cheie: imagologie, români, maghiari, evrei
La ciudadanía en disputa: La colectividad alemana ante el Estado argentino entre fines del XIX y principios del XX
Authors: Schierenbeck Tomás 
Published: September 2021

Reseña de: Benjamin Bryce (2019). Ser de Buenos Aires: alemanes, argentinos y el surgimiento de una sociedad plural 1880-1930. Buenos Aires: Editorial Biblos. 336 páginas
Mathematical Modelling of Water-Based Fe3O4 Nanofluid Due to Rotating Disc and Comparison with Similarity Solution
Authors: Bhandari Anupam 
Published: September 2021

Abstract
The current research demonstrates the revolving flow of water-based Fe3O4 nanofluid due to the uniform rotation of the disc. This flow of nanofluid is investigated using CFD Module in COMSOL Multiphysics. However, the similarity solution for this flow is also obtained after transforming the given equation into a non-dimensional form. In the CFD Module, streamlines and surface plots are compared with the similarity solution for the magnitude of the velocity, radial velocity, tangential velocity, and axial velocity. The results from the direct simulation in the CFD Module and the solution of dimensionless equations represent a similar solution of velocity distribution. The derived results show that increasing the volume concentration of nanoparticles and effective magnetic parameters decrease the velocity distribution in the flow. Results in the CFD Module are important for monitoring the real-time particle tracing in the flow and, on the other hand, the dimensionless solution is also significant for the physical interpretation of the problem. Both methods of solution empower each other and present the physical model without sacrificing the relevant physical phenomena.
Applying Collocation Analysis to Chinese Discourse: A Case Study of Causal Connectives
Authors: Wei Yipu , Speelman Dirk , Evers-Vermeul Jacqueline 
Published: September 2021

AbstractCollocation analysis can be used to extract meaningful linguistic information from large-scale corpus data. This paper reviews the methodological issues one may encounter when performing collocation analysis for discourse studies on Chinese. We propose four crucial aspects to consider in such analyses: (i) the definition of collocates according to various parameters; (ii) the choice of analysis and association measures; (iii) the definition of the search span; and (iv) the selection of corpora for analysis. To illustrate how these aspects can be addressed when applying a Chinese collocation analysis, we conducted a case study of two Chinese causal connectives:yushi‘that is why’ andyin’er‘as a result’. The distinctive collocation analysis shows how these two connectives differ in volitionality, an important dimension of discourse relations. The study also demonstrates that collocation analysis, as an explorative approach based on large-scale data, can provide valuable converging evidence for corpus-based studies that have been conducted with laborious manual analysis on limited datasets.
Lymphoepithelial Carcinoma of the Palatine Tonsil
Authors: Jevtić Milica , Milić Dejan , Jovanović Marina , Relić Nenad , Jevtović Andra , Božović Natalija 
Published: September 2021

Abstract
Lymphoepithelial carcinoma is an undifferentiated carcinoma with nonneoplastic lymphoplasmacytic infiltrate, mostly located in the nasopharynx, while it is extremely rare in the oropharynx. We present a rare case of lymphoepithelial carcinoma arising from palatine tonsil. A 81-year old male patient complained of dysphagia, hypersalivation and bloody sputum. Clinical examination revealed hypertrophy of the right palatine tonsil and ipsilateral cervical lymphadenopathy. Biopsy and histopathological analysis confirmed the diagnosis of lymphoepithelial carcinoma. Multi-slice computed tomography showed a 33×31×38 mm heterodense mass in the region of the right palatine tonsil, and 37×30 mm and 21×20 mm lymph nodes on the right side of the neck. The patient was reffered to an oncology council, which suggested radiotherapy and concurrent chemotherapy. Although rare in clinical practice, lymphoepithelial carcinoma should be considered in cases of tonsil cancer.