bluuebunny/crossref_metadata_2025 huggingface dataset:
Utilization of Chitosan as an Inhibitor to Improve the Corrosion Resistance of Low-Carbon Steel
Authors: Gemala Mega , Fajrin Aulia , Aryswan Adhe , Saputra Roni , Saputra Ihsan , Sriyanto
Published: March 2023

The Batam industry materials are steel, an alloy material between iron and carbon, and a few other elements. Low-carbon steel is one type of metal. However, this low-carbon steel has the disadvantage of corrosion resistance, mainly if applied to corrosive environments. In the utilization of Low carbon steel in the industry, corrosion can cause problems and cost a lot of money in its maintenance. Chitosan contained in invertebrate animals is predicted to be able to prevent corrosion as an inhibitor. This study aims to analyze the optimal conditions of chitosan inhibitors against the corrosion rate of low-carbon steel in environments with variations in the length of immersion of specimens in corrosive media. This study is a true-experimental study with a pre-post-test design. The determination of the optimal conditions of corrosion inhibition of low-carbon steel plate specimens by chitosan was carried out with variations in the parameters of HCl concentration, specimen immersion time, and chitosan concentration. The analysis carried out is the measurement of specimen weight loss in each parameter by determining the difference in weight before and after the experiment and determining the efficiency of the inhibitor. The experiment’s results showed that the optimal conditions of inhibition of corrosion were at 1M HCl, 400ppm chitosan, and a soaking time of 3 days with an efficiency of 48%. The efficiency value of this optimum corrosion inhibition of chitosan in low-carbon steel is 48%. To improve the efficiency of corrosion inhibition, it is necessary to further research with higher accuracyTo determine the effect of inhibition of corrosion using chitosan on the quality of steel surfaces, it is necessary to analyze the steel surface structure using ultrasonic testing or using XRD Analysis.
Homemade BIOPLASTICS (Biodegradable Plastic From Cassava Peel Waste) with Analysis of the Effect of Glycerol and Cellulose Ratio on Tensile Strength, Elongation, and Thickness
Authors: Dewi Nurulhasni
Published: March 2023

The massive use of plastic as food and non-food packaging does not cause a few problems. The accumulation of plastic waste can cause environmental pollution, both water and soil pollution, because plastic will be damaged and decomposed within 300 to 500 years. For this reason, environmentally friendly plastics are needed for conventional plastics which of course have characteristics that are not far inferior to conventional plastics such as flexible, lightweight, not easy to break, waterproof, not corrosive. Bioplastic is a type of plastic that can be degraded so it is not harmful to the environment. This paper aims to see the effect of the ratio of glycerol and cellulose on tensile strength, elongation, and thickness of bioplastics using cassava peel waste. This research uses cassava peel as the basic material for making starch which is then given a mixture of glycerol and cellulose to be used as bioplastics. Tensile strength and elongation tests were carried out using the zwick/roell Universal Testing Machine (UTM). While the thickness uses Mitutoyo's Thickness Gauge. The results obtained are thin plastic sheets made using 5 grams of starch with a mixture of cellulose (0.4; 0.6; 0.8) grams and glycerol (100%, 150%, 200%) ml which have been tested for mechanical properties. The best mechanical properties of the tensile strength of bioplastics were indicated by the sample coded C2G2 with a concentration of 1.5 ml of glycerol and 0.8 gram of cellulose with an average tensile strength of 7.4808 (N/mm2), while the highest elongation was shown in the sample coded C3G3. with a concentration of 2.0 ml of glycerol and 0.8 grams of cellulose with an average sample elongation value of 6.2448%, while the highest thickness determined in the sample coded C2G2, a concentration of 1.5 ml of glycerol and 0.6 grams of cellulose with a value of the average thickness is 269,066 (µm).
Redesigning Family Education Media Website Using Design Thinking Method and System Usability Scale
Authors: Subhiyakto Egia Rosi , Pratiwi Mutia Rahmi , Hapsari Swita Amalia
Published: March 2023

Using educational media today is growing on several platforms, such as websites. Educational media application developers need to pay attention to a good interface so that user interaction with the application runs well and comfortably. One of the website-based family education media is mendadakparenting.com. We evaluate this website to users by paying attention to features and menus that are not yet available. This study aims to improve the design and increase user interest in using family education media as a website. The method we use in this research is the design thinking method. We have considered the choice of this method because it fits the approach to the user. The evaluation technique we use is an usability scale system. In the questionnaire, before the redesign, a score of 65.3 was got, so it was necessary to redesign. Then after we did a redesign with the addition of several features according to user input. The level of convenience based on evaluations to users regarding the design of the family education media website application resulted in a score of 77 with a high acceptance rate, the value scale was B, and it included the adjective rating for the good criteria.
CHROMOPHORIC DISSOLVED ORGANIC MATTER (CDOM) DAN NUTRIEN TERLARUT DI SUMBER AIR DI BALI UTARA
Authors: Suryaputra I Gusti Ngurah Agung
Published: March 2023

Penelitian ini dilakukan dengan tujuan untuk menentukan absorbansi chromophoric dissolved organic matter (CDOM) dan konsentrasi nutrien terlarut di sumber air di Sanggalangit, Kecamatan Gerokgak, Kabupaten Buleleng yang terletak di Bali Utara, serta menganalisis pengaruh curah hujan terhadap sumber air ini. Subjek dalam penelitian ini adalah air yang diambil dari sumber air di Sanggalangit yang telah disaring menggunakan kertas saring GF/F 0,7 µm. Objek penelitian ini adalah absorbansi CDOM dan konsentrasi nutrien terlarut. Pengukuran absorbansi CDOM dan konsentrasi nutrien dilakukan dengan menggunakan instrumen spektrofotometer Ultraviolet Visible (UV-Vis). Dari nilai absorbansi yang diperoleh, kemudian dihitung parameter S275-295, S350-400, dan E2:E3. Hasil penelitian menunjukkan bahwa nilai dari S275-295 dan S350-400 menunjukkan kecenderungan nilai maksimum dan minimum yang terbalik dengan curah hujan. Curah hujan berpengaruh terhadap rasio E2:E3, tetapi tidak terlihat mempengaruhi konsentrasi nutrien terlarut (nitrat, nitrit, amonia, dan fosfat). Berdasarkan peraturan yang berlaku, kualitas air di sumber air Sanggalangit tergolong baik secara kimiawi.
PENGARUH SUPLEMENTASI KOMBINASI VITAMIN E, ZINC, DAN SELENIUM DALAM MINUM TERHADAP TOTAL LEUKOSIT DAN DEFERENSIAL LEUKOSIT AYAM KAMPUNG BETINA
Authors: Aji Wahyu Purnomo , Siswanto Siswanto , Muhtarudin Muhtarudin , Santosa Purnama Edy
Published: March 2023

Penelitian ini bertujuan untuk mengetahui pengaruh pemberian suplementasi kombinasi vitamin E, zinc dan selenium terhadap total leukosit dan diferensial leukosit (neutrofil, eosinofil, basofil, limfosit, monosit) ayam kampung betina. Penelitian ini dilaksanakan pada Januari–Maret 2022 di Kandang Laboratorium Lapang Terpadu Fakultas Pertanian, Universitas Lampung. Analisis sampel darah pada penelitian ini dilakukan di Laboratorium Fisiologi dan Reproduksi Ternak, Jurusan Peternakan, Fakultas Pertanian, Universitas Lampung dan Balai Veteriner Lampung, Bandar Lampung. Penelitian eksperimental menggunakan 4 perlakuan dan 3 ulangan. Perlakuan yang diberikan melalui air minum dengan P0: (Kontrol); P1: 0,015 g/kg BB (Vitamin E 0,6 IU, Zn 2,4 mg, Selenium 0,06 mg); P2: 0,03 g/kg BB (Vitamin E 1,2 IU, Zn 4,8 mg, Selenium 0,012 mg); P3: 0,06 g/kg BB (Vitamin E 2,4 IU, Zn 9,6 mg, Selenium 0,024 mg). Data yang diperoleh dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa perlakuan pemberian suplementasi kombinasi vitamin E, zink, dan selenium dapat mempertahankan rata-rata total leukosit dalam kondisi normal pada semua perlakuan, sedangkan perlakuan pemberian suplementasi kombinasi vitamin E, zink, dan selenium dapat mempertahankan rata-rata diferensial leukosit dalam kondisi normal terdapat pada perlakuan P1 dan P2.
Kumsal Sedimanlarının Mikroplastik İçeriklerinin ve Sediman Tanelerinin Karakterizasyonu: Muğla Kıyılarından (GB Türkiye) Örnek Çalışma
Authors: GUL Murat , KÜÇÜKUYSAL Ceren , MASUD Ahmed
Published: March 2023

Günlük hayatta önemli bir yere sahip olan plastikler, fiziksel bozunmaya uğradıklarında kolaylıkla taşınarak göllere, akarsulara, denizlere, dağlara ve topraklara ulaşmakta ve kirletici olarak tüm doğal ekosistemlere zarar vermektedirler. Mikroplastiklerin özellikle kıyı alanlarında birikimini etkileyen en önemli unsurlardan ilki jeolojik süreçlerden olan karasal ve denizel sedimanların taşınımları ikincisi ise antropojenik etmenlerdir. Muğla kıyı sedimanlarında biriken mikroplastik miktarını belirlemek amacıyla Palamutbükü, Datça, Marmaris ve Akyaka sahil kumlarından alınan örnekler tane boyu bakımından karakterize edilmiş; düşük yoğunluklu mikroplastik ayırma yöntemleri kullanılmıştır. Plastik içeriği sırasıyla; Palamutbükü örneğinde 11 adet meso-makro plastik, 56 adet mikroplastik / 50 g, Datça örneğinde 13 adet meso-makro plastik, 33 adet mikroplastik / 50 g, Marmaris örneğinde 13 adet meso-makro plastik, 143 adet mikroplastik / 50 g, ve Akyaka örneğinde 4 adet meso-makro plastik, 59 adet mikroplastik / 50 g olarak belirlenmiştir. Orta kum boyunda, incelenen örnekler içinde en küçük ortalama tane boyutuna sahip Akyaka sahili örneği meso-makroplastik içeriği en düşük olandır. İnce çakıl ortalama tane boyuyla en kaba ortalama tane boyuna ve en yüksek çakıl yüzdesine sahip Datça örneği ise mikroplastik sayısı en düşük örnektir. Lif ve parça formunda plastik parçalarında Fourier Dönüşümlü Kızıl Ötesi Spektrometresi analizi gerçekleştirilmiştir. Mikroplastiklerin bileşimlerinde selülöz, polietilen ve polipropilen olduğu belirlenmiştir.
Reading, Writing and Reading Comprehension: Coexistence between Printed and Digital Media
Authors: Cataño Lopera Genny Alejandra
Published: March 2023

Culture is an extremely complex phenomenon that is linked not only to the communicative function but also to social practices. Reading and writing are constructs that have accompanied human beings since the appearance of the codex (ancient handwritten books), through the printing press. Nowadays, digital media, and even printed media, have great relevance, especially if we talk about informative vehicles possessors and transmitters of knowledge, which have an audience with significant reading and writing habits. The call is then to learn to make a joint and avant-garde use of print and digital media to strengthen the development of reading, writing, and reading comprehension from the school environment.
Synthesis of Al Thin Films with High Optical Transmittance by DC Magnetron Sputtering Process Parameter Optimization
Authors: Rahman Md. Shahinur , Lee Heon-Ju , Uddin Muhammad Athar , Fattah Islam Md. Rizwanul , Islam Md. Shafiqul
Published: March 2023

Nanostructured Al thin film with higher optical transmittance and electrical conductivity has intensive applications in solar cells and optical and microelectronic devices. This experimental-based research study has optimized the DC magnetron sputtering deposition parameters (sputtering power, sputtering current, voltage, and working gas pressure) for Al thin film deposition to obtain the highest optical transmittance and lower sheet resistance. Optical transmittance, surface roughness, film thickness, sheet resistance, grain size, and surface morphology were characterized using UV-vis-NIR spectroscopy, surface profiler, spectroscopic ellipsometry, four-point probe, and FE-SEM, respectively to determine the effects of sputtering process parameters on Al films’ different properties. Experimental investigations reveal that electrical conductivity, surface roughness, grain size, and deposition rate increase with increasing of sputtering power at certain working gas pressure. At the optimized condition (sputtering power 80 W, working gas pressure 5 mTorr, deposition time 5 min and ambient temperature), the relatively higher optical transmittance in visible region 96%, moderate sheet resistance 0.196 ohm/square and lowest average surface roughness 2.86 nm were obtained for Al thin film. After all, this research study will help to understand the best Al film deposition parameters in terms of optical transmittance and electrical conductivity for future research and industrial applications.
DUOLINGO SPANISH USERS: DISCUSSION BOARDS USE OVER TIME
Authors: Neuschafer Tom
Published: March 2023

Spanish is one of the most popular foreign language subjects among learners, as there are currently 142 million users who have used Duolingo to learn Spanish. The Spanish language is projected to see even greater increases in the United States, both academically and demographically. The current research question asks, “How do individual Duolingo Spanish users use discussion boards over time among highly engaged, moderately engaged, and lower engaged users?” This study of Duolingo Spanish users is compared to a previous study about how highly engaged, moderately engaged, and lower engaged Duolingo German users use discussion boards over time. The results of the analysis showed that there were three themes: (1) highly engaged users make comments over a longer period of time over many years and have the highest proficiency in the Spanish language; (2) moderately engaged users make comments over a relatively shorter period of time during the duration of their studies; (3) lower engaged users are more likely to engage in the discussion boards socially about tangential topics over the span of months. The results of this study may inform researchers and educators on how discussion boards may facilitate language learning skills and Spanish knowledge to increase proficiency.
La aportación intelectual de Enrique Bustamante a la economía política de la comunicación: hilos conductores
Authors: Zallo RAmón
Published: March 2023

Tras una interpretación global de la obra de Enrique Bustamante en la introducción, se señalan a continuación, los antecedentes de autores que le influyeron. Se periodiza su obra en cuatro tramos temporales (1970-1982, 1983 -1999, 2000-2011 y 2011-2020) en función de las temáticas preferentes dentro de un hilo general de continuidad en la base de su pensamiento. En la última parte se hace un recorrido sobre ocho temáticas de su investigación preferente: la cultura vinculada a la comunicación, la economía de las industrias culturales, el periodismo, la concentración mediática, el servicio público, las tecnologías, los flujos internacionales y las políticas culturales y de comunicación. Tras esa andadura expositiva, en el epílogo se vuelven a retomar los rasgos de su figura.
Territoires et identités
Authors: Robles Florido Juan Carlos , Navarrete Tudela Ana
Published: March 2023

Es una propuesta editorial fruto de la colabporaciógn entre. TRI4AS CULTURE, con sede en Dakar, MIDE-CIANT, Museo Internacional de Electrografía, Centro de Innovación en Arte y Nuevas tecnologías de la Universidad de Castilla-La Mancha con sede en Cuenca y la Universidad de Málaga. Esta publicación presenta la obra de 25 artistas que abordan estas cuestiones desde distintos puntos de vista. Desde diferentes posiciones, pero siempre partiendo de la consideración del territorio como una representación: el territorio como red de relaciones sociales, el territorio como constructor de identidad, el territorio como espacio físicopolítico, el territorio como frontera, como límite, el territorio y su construcción del cuerpo, del sujeto, de la alteridad, de la globalización, de lo poscolonial y los procesos decoloniales. Hemos hecho una selección de obras de vídeo que se proyectarán en modo monocanal, acompañado de algunas obras fotográficas de pequeño formato. Creemos que éstas son las disciplinas más ágiles a la hora de hacer de una exposición un foro de encuentro.
Spider mites (Acariformes, Tetranychidae) of the Massane Nature Reserve (France)
Authors: Auger Philippe , Garrigue Joseph , Fossoud Amandine , Migeon Alain
Published: March 2023

We present results of the inventory of the spider mites of the Massane Forest Nature Reserve made during several field samplings from 2013 to 2017. Nineteen species have been recorded, which represents more than one third of the known spider mite fauna in France. Among them, three new species were disclosed and are described: Bryobia (Bryobia) alberensis sp. nov. collected on Phyteuma spicatum and Helichrysum stoechas, B. (Periplanobia) polymorpha sp. nov. on Genista pilosa and Tetranychus visigothus sp. nov., on Eryngium campestre, respectively. In addition, three spider mite species, Bryobia (Periplanobia) serifiotica, Eotetranychus aurantii and Eotetranychus fagi are recorded from France for the first time and three plant species are recorded as new host plants for tetranychid mites. The species delineation of B. (P.) polymorpha sp. nov., that presented large variation in dorsal setae length and shape, was investigated using a combination of morphological and molecular data. This approach allowed us to conclude that, despite such variations in a morphological key character, all the specimens observed belong to the same species.
Magyarország szárazföldi ászkarákfaunája (Isopoda: Oniscidea): Trachelipus nodulosus (C. L. Koch, 1838)
Authors: Farkas Sándor
Published: March 2023

The terrestrial woodlouse Trachelipus nodulosus (C. L. Koch, 1838) is a common species of the Isopod fauna of Hungary. Detailed information on the morphology, physiology, pruductivity, ecology and distribution of the species, figures to determination and distribution map are given.
Töredékes cseres-tölgyesek a Zákányi-dombokon (Asphodelo-Quercetum roboris Borhidi in Borhidi et Kevey 1996)
Authors: Kevey Balázs
Published: March 2023

In this paper, the turkey oak forest fragments occurring in the Zákány Hills of SW Hungary are described and characterized based on 10 phytosociological samples. The stands grow on pebbly hilltops covered with loess. Their species composition features subcontinental-submediterranean and Illyrian influences: Anemone trifolia, Castanea sativa, Peucedanum verticillare, Polystichum setiferum, Primula vulgaris, Tamus communis. These forests are identified with the association Asphodelo-Quercetum roboris occurring in the sand hills and pebble hills in Transdanubia. Although to some degree these fragments represent transitional stands to the surrounding oak-hornbeam forests (Anemoni trifoliae-Carpinetum), they clearly differ in species composition. The association is classified into the suballiance Quercenion farnetto Kevey in Kevey et Borhidi 2005 within the alliance Quercion farnetto I. Horvat 1954.
Water beetle fauna of the moors at Lake Balaton (Coleoptera: Hydraenidae)
Authors: Lőkkös Andor
Published: March 2023

Results of faunistic investigations on the moors along the Southern cost of the Lake Balaton is published. We have data on the water beetle fauna of Kis-Balaton and Nagyberek only. 64 species and subspecies of 7 families are recorded. Samples were taken at 6 places near Lake Balaton between 2003 and 2009. Most of the collected species are common throughout the country only Laccobius gracilis Motschulsky, 1855, is rare.
A sárga gyapjasszövő – Eriogaster catax (Linnaeus, 1758) európai jelentőségű populációja Váton (Lepidoptera: Lasiocampidae)
Authors: Ambrus András , Kiss Szilárd , Sáfián Szabolcs , Horváth Bálint , Horváth Ágnes
Published: March 2023

In 2008, A population of Orange Eggar – Eriogaster catax (Linnaeus, 1758) with exceptionally high density was found during a monitoring survey in a former military training ground by the authors near the village Vát (Vas County, Western Hungary). Now, the area is a part of Natura 2000 network under the Habitats Directive of European Community (ID: HUON20005). The authors estimated the population size over 10 million (larval stage) individuals based on counting caterpillar webs along a 500-metre-long transect in 2008. Since the first estimation based on the results from a single transect and the habitat structure of the area was not considered in the estimation, the survey was repeated in a larger sampling area in 2009. The habitat size was also corrected by removal of hostile non-habitat patches identified from aerial photographs. Since the survey resulted in similarly high population density, it can safely be stated, that the population near Vát is of European conservation concern. Further surveys on the ecology of the species and establishment of specific conservation management would be desirable to avoid habitat loss.
Przez zabawę ku źródłom dźwięków — przyczynek do badań instalacji dźwiękowych w twórczości Lidii Zielińskiej
Authors: Dziewanowska-Pachowska Marta
Published: March 2023

Through Play to Sound Sources—A Contribution to Research ofLidia Zielińska’s Sound Installations

Sound installations have been present in Polish music since the 1960s when the first “spatial-musical compositions” were presented by Zygmunt Krauze. His innovative activities hadn’t found followers in the Polish musical community for quite a while, but in the 1980s composers started to be more and more interested in multimedia forms engaging recipients into an active participation. Among these artists was Lidia Zielińska—a composer willingly exploring the sonoristic possibilities of both traditional instruments and electroacoustic ones. A big importance into the formation of her individual composition language was getting familiar with Raymond Murray Schafer’s ideas, meetings with this Canadian composer and promoting his thought into the polish community. An important current of her creative activities were also the actions focused on children. All these mentioned aspects can be seen in her installations that—according to the assumptions of Łukasz Guzek, a researcher of 20th and 21st-century art—inextricably combine the questions of space and presence. In terms of sound, these projects and not-installation Zielińska’s creations merge into a coherent whole: a space to explore problems related to sound’s essence and sources, as well as acoustic ecology. This article describes in more detail the following sound installations of Lidia Zielińska, including their composition assumptions and way of realizing the elements characterising the installation forms: Muzyka potencjalna [nr 1]. Spiskowa teoria dźwięku (1988), Projekt dla końca korytarza (1994), Alles gab’s schon mal/Wszystko już było (2006), Lutosławski DIY (2013), Plasterki muzyki (2013), Looks Chinese, Sounds Polish (2013) and Polish Sonorities (2014).
„Nie podoba mi się to… ”, czyli problematyka społeczna w twórczości Lidii Zielińskiej
Authors: Świdnicka Iwona
Published: March 2023

“I don’t like it.” That Is Social Issues in the Work of Lidia Zielińska

Lidia Zielińska is said to be “a master of combining classical instruments with electronics”, but it would be equally appropriate to say that for several years she has also been a master of combining/associating her compositions with important social problems such: hate speech, pollution and degradation of the planet, failure to respect woman’s rights, dividing societies for political reasons or the issue of leaving, death taking its toll with increasing intensity recently. This article concerns a work I do not like it by Lidia Zielińska from 2018, which touches on a particularly difficult social problem, which is the growing aggression spreading, among others, in social media, having tragic consequences in the form of suicides of young people, stigmatized, excluded and ridiculed by their peers. The composer, deeply moved by this problem, wants to develop, in young people, but also in society in general, the awareness of the processes involved in the emergence of aggression, hatred and the awareness of what effects they can cause.
CD56-positive diffuse large B-cell lymphoma: comprehensive analysis of clinical, pathological, and molecular characteristics with literature review
Authors: Gasljevic Gorana , Boltezar Lucka , Novakovic Srdjan , Setrajcic-Dragos Vita , Jezersek-Novakovic Barbara , Kloboves-Prevodnik Veronika
Published: March 2023

Background

Diffuse large B-cell lymphoma (DLBCL) is the most common non-Hodgkin lymphoma. The expression of CD56 in DLBCL is highly unusual. Little is known about its incidence and clinical importance. So far, no genetic profiling was performed in CD56 positive DLBCL.

Patients and methods

Tissue microarrays have been constructed, sectioned, and stained by H&E and immunohistochemistry for 229 patients with DLBCL diagnosed 2008–2017. For CD56 positive cases, clinical data was collected including age at diagnosis, stage of the disease, International Prognostic Index (IPI) score, treatment scheme and number of chemotherapy cycles, radiation therapy, treatment outcome, and possible relapse of the disease. Overall survival (OS) and progression-free survival (PFS) were calculated. For four patients, RNA was extracted and targeted RNA (cDNA) sequencing of 125 genes was performed with the Archer FusionPlex Lymphoma kit.

Results

CD56 expression was found in 7 cases (3%). The intensity of expression varied from weak to moderate focal, to very intensive and diffuse. All patients had de novo DLBCL. The median age at the time of diagnosis was 54.5 years. Five of them were women and 2 males. According to the Hans algorithm, 6 patients had the germinal centre B cells (GBC) type and one non-GBC (activated B-cell [ABC]) type, double expressor. Genetic profiling of four patients according to Schmitz's classification showed that 1 case was of the BN2 subtype, 1 of EZB subtype, 2 were unclassified. The six treated patients reached a complete response and did not experience progression of the disease during the median follow-up period of 80.5 months.

Conclusions

We report on one of the largest series of CD56+DLBCL with detailed clinicopathological data and for the first time described genetical findings in a limited number of patients. Our results show that CD56 expression is rare, but seems to be present in prognostic favourable subtypes of DLBCL not otherwise specified (NOS) as tested by immunohistochemical or genetic profiling.
Distribution, abundance, and breeding of the imperial eagle (Aquila heliaca) in Western Slovakia in 1977–2022
Authors: Chavko Jozef , Prešinský Leonidas , Slobodník Roman
Published: March 2023

The distribution, abundance, breeding success, and habitats of the imperial eagle in the mountains and adjacent lowlands of Western Slovakia were studied over the last 45 years (1977–2022), with a total of 65 breeding pairs documented. Of the 589 breeding attempts (range 2–42 per year) that were recorded, 420 were successful (74%) and produced 718 chicks altogether. Breeding success varied considerably across the years, with an average of 1.2 chicks per initiated and 1.7 chicks per successful breeding attempt. Three chicks fledged from 10.7% of the successful breeding attempts, two chicks from 50.2%, and one chick from 39.1% of them. Breeding numbers increased slowly between 1977 and 1997, with a marked increase after 1998. In two of the most recent years, 2020 and 2021, breeding numbers more than doubled. Since 2000, we have observed changes in breeding habitat preferences, where the population has shown more preference for lowland regions than mountains. Natural factors are probably driving the upward population trend, but there has also been action taken with several management measures. The conservation measures involved and their impact on population and range trends are analysed and discussed here.
Hunger sweetens the beans: evidence of opportunistic feeding behaviour of the little owl (Athene noctua, Scopoli 1769) from Peloponnese, Greece
Authors: Kolendrianou Maria , Mitsainas George P. , Tzortzakaki Olga , Katsiyiannis Philippos , Vythoulkas Theodoros , Patrou Myriam , Iliopoulos George
Published: March 2023

The little owl (Athene noctua) is a common raptor in Mediterranean habitats. To acquire more information on its diet, this study identified cranial and post-cranial skeletal material from 70 owl pellets collected during the 2016 and 2017 breeding seasons. The material was used to quantify the little owl’s relative prey abundance using MNI (minimum number of individuals), a taphonomical unit. This study is the first to examine the diet of the little owl in the Peloponnese (southern Greece). After examining 3,691 isolated skeletal and exoskeletal remains from the processed pellets, a total of 78 and 108 prey items were recorded for the two consecutive years. This study, in congruence with previous research, showed that in both years the little owl favoured primarily small mammals and arthropods, with a clear predominance of Thomas’s pine vole (Microtus thomasi) and arthropods from the class Diplopoda. Finally, a redundancy discriminant analysis (RDA) was applied to our two-year results, along with those from similar studies in the Mediterranean region, to examine the relationship between habitat types and prey taxa, which supported the little owl’s opportunistic feeding behaviour, depending on variation of ecological factors.
¿Es México competitivo en el comercio internacional de carne de pollo?
Authors: Bustamante-Lara Tzatzil Isela , Téllez-Sánchez Fernando , Rodríguez-Haros Benito , Vargas-Canales Juan Manuel , Reyes-Barrera Dulce María , Rosas-Vargas Rocío
Published: March 2023

Objetivo: analizar la influencia del comercio internacional tanto en la especialización como en la y competitividad de carne de pollo en México en el periodo 1980 a 2017. Metodología: se aplicó un método hipotético- deductivo, el estudio es de corte longitudinal con información de fuentes secundarias con las cuales se desarrolló una base de datos en Excel en forma de matrices para calcular los índices de competitividad, esto a nivel macroeconómico que son: índice de Lafay y de Balassa. Resultados: México carece de ventajas comparativas por lo que debe generar estrategias de infraestructura, regulación sanitaria y fortalecimiento de la cadena productiva para incrementar la producción, reducir costos y con ello incrementar su especialización y competitividad como exportador neto. Limitaciones: es necesario difundir, por la vía institucional y en colaboración con organismos privados y no gubernamentales, las mejores prácticas agrícolas y a la vez, estimular el desarrollo del mercado de la semilla mejorada. Conclusiones: es necesario llevar a cabo acciones que incrementen las ventajas y con ello la especialización y competitividad en la avicultura comercial de carne de pollo.
Predictors and classifications of the degree of severity of acute pancreatitis
Authors: Fedorov A. V. , Ektov V. N. , Khodorkovskiy M. A.
Published: March 2023

Severe acute panreatitis is a life-threatening disease with mortality rates of about 15%. With the development of infected necrotizing pancreatitis, complicated by the development of organ failure, the mortality rate is 35.2%. Due to the fact that acute pancreatitis is a highly variable pathological process, leading to a wide range of clinical outcomes, predicting the severity of the disease and early identification of patients at risk of developing severe complications is critical to optimize treatment outcomes for this disease. Currently, there are no uniquely accurate and practically available laboratory tests to predict the severity of patients with acute pancreatitis. The review presents literature data on the terminology and classifications of the severity of acute pancreatitis, taking into account the possibilities of their practical application. Information on clinical scale systems for assessing the severity of acute pancreatitis with an assessment of their effectiveness in predicting various treatment outcomes is presented in detail. The characteristics and capabilities of various laboratory markers in the assessment of organ failure and diagnosis of systemic complications of acute pancreatitis are presented. Currently, for the best assessment of the severity of acute pancreatitis, it is necessary to use a multidisciplinary clinical examination of patients and a combination of various predictive tools.
Professor Georgy Savvovich Chepcheruk (on the 80th anniversary of his birthday)
Authors: Barinov O. V. , Yablonsky P. K. , Lishenko V. V. , Zaitsev D. A. , Kurygin A. A.
Published: March 2023

Georgy Savvovich Chepcheruk was born on September 8, 1942 in the village of Gremyache, Rivne region of the Ukrainian SSR. After graduating from elementary school in 1955, he studied at the Dubna Medical School in the Rivne region until 1958. Then, for two years, he worked as the head of the feldsher-midwife station. In 1960, he was drafted into the ranks of the Soviet army. He began his service as a paramedic of an artillery regiment, from where, in 1962, he entered the Military Medical Academy named after S. M. Kirov. He graduated from the Academy in 1968 with a GOLD MEDAL. After graduating from the Academy, he served for 4 years as the head of the medical service of a submarine in the Red Banner Black Sea Fleet. In 1972, having successfully passed the entrance exams, he entered the postgraduate course at the Department of Hospital Surgery of the Military Medical Academy named after S. M. Kirov. In 1976, he defended his PhD dissertation on the subject: «Clotted hemothorax and early fibrinothorax after pneumonectomy». He held positions from teacher to deputy head of the department. From 1984 to 1987, he served in the Democratic Republic of Afghanistan as an adviser to the chief surgeon of the Central Military Hospital in Kabul. In 1988, he defended his doctoral dissertation on the subject: «Pathogenetic bases for the prevention and treatment of pleural empyema». From 1989 to 1994 – Deputy Head of the Department of Hospital Surgery. From this position in 1994, he retired from the ranks of the Armed Forces continuing to work in civil healthcare on the basis of the hospital of the Ministry of Internal Affairs of St. Petersburg until 2018. Georgy Savvovich devoted all his main activities in medicine to thoracic surgery. The results of his practical and scientific activity of many years were published in more than 170 scientific papers, 7 monographs and guidelines for physicians. Georgy Savvovich was a «pioneer» in the use of direct-acting fibrinolytic therapy in thoracic surgery as an alternative to surgical treatment in such pathological conditions as fibrinothorax, pleural empyema, clotted hemothorax.
Prognostic role of comorbid status in estimation of surgical treatment results in patients with perforated ulcer
Authors: Panin S. I. , Suvorov V. A. , Bykov A. V. , Kovalenko N. V. , Postolov M. P. , Bublikov A. E. , Mikhin E. S. , Linchenko A. A.
Published: March 2023

INTRODUCTION. The heterogeneity of the population of patients with perforated ulcers determines the need for a targeted research of the results of their treatment, including taking into account the level of comorbidity.

OBJECTIVE. To study the results and develop a predictive model of surgical treatment of perforated ulcers, taking into account the comorbid status of patients.

METHODS AND MATERIALS. The results of treatment of 194 patients with perforated ulcers of the stomach and duodenum were studied. Stratification of patients was carried out taking into account the Charlson-Deyo comorbidity index. The construction of prognostic models was carried out using binary logistic regression.

RESULTS. Depending on the level of comorbidity, during a posteriori comparisons, the incidence of postoperative complications in the third group (46.7%, 28/60) was statistically significantly higher compared to the first (22.8%, 13/57) and second groups (16.9%, 13/77) (χ2 = 15.908, p<0.001).

In a comparative analysis, a prognostic model taking into account the comorbid status of the patient predicted the development of postoperative complications and mortality with the greatest accuracy.

CONCLUSION. Taking into account the comorbid status of patients with perforated ulcer makes it possible to predict with greater accuracy the development of postoperative complications of III-V degree according to Clavien-Dindo.
Surgical treatment of high-risk pulmonary embolism associated with paradoxical embolism, complicated by acute cerebrovascular accident
Authors: Gamzaev A. B. , Fedorov S. A. , Chiginev V. A. , Pichugin V. V. , Teplitskaya V. V. , Sukhova M. B. , Pimenova P. V. , Domnin S. E.
Published: March 2023

The article presents a case of successful surgical treatment of pulmonary embolism in a patient with a high risk of early cardiac death on the background of paradoxical embolism complicated by acute cerebrovascular accident. Cryptogenic acute cerebrovascular accident in combination with severe progressive right ventricular failure on the background of pulmonary embolism causes serious difficulties in making decisions regarding treatment tactics in these patients. Intracardiac localization of thromboemboli, threatened by the development of recurrent pulmonary embolism, as well as paradoxical embolism, requires immediate implementation of a differential diagnostic complex aimed at verifying the pathophysiological mechanism of the disease, which largely determines the effectiveness of the treatment. The analysis of the available literature data, given in the work, as well as the analysis of the clinical case, make it possible to develop a tactical algorithm in this group of patients and to determine the indications for open heart surgery.
Replacement of aortic valve flaps with an autopericardium using the S. Ozaki technique
Authors: Gramatikov D. G. , Litus V. S. , Noginov V. K. , Budanov K. E. , Samko K. V.
Published: March 2023

Classical aortic valve replacement is often fraught with negative outcomes for patients. When replacing the aortic valve with a mechanical valve prosthesis, the patient is associated for life with the use of indirect anticoagulants, which often leads to hemorrhagic and thrombotic complications. In the case of replacement of the aortic valve with a biological prosthesis, a fairly frequent complication is early calcification and, consequently, a high frequency of dysfunctions of the biological prosthesis. In addition, mechanical and biological prosthetics of heart valves are quite expensive, which creates a serious economic load on the healthcare institution. But in the last decade, the technique of neocuspidization of the aortic valve with autopericardial flaps has been introduced into wide cardiac surgical practice, which is a clear alternative to prosthetics of heart valves.
Complete fracture-dislocation of the cervical spine without permanent neurological sequelae: case report
Authors: Alkhathami Abdulmajeed , Alghamdi Saeed , Elbandary Ahmed , Alshahrani Abdulmohsen , Alqarni Anas , Al-khabti Saleh
Published: March 2023

Background: Cervical spine injuries occur in up to 3% of all trauma patients. Fracture-dislocation of the lower cervical spine is typically present with severe spinal cord injury in which the body of one vertebra rests fully anterior to the next body. With this kind of injury, there are very few examples where there is no permanent neurological deficit, and those that do exist are extremely rare.
Case Presentation: A 19-year-old Saudi male patient was presented by ambulance to the emergency department. He was a front-seat passenger in a vehicle involved in a road accident. The patient was unconscious, Glasgow Coma Scale (GCS) (8/15), and quadriparetic. He was intubated and put on a mechanical ventilator and vasopressor support for persistent hypotension. American Spinal Injury Association impairment scale was a grade A. Initial management and resuscitation was done according to Advanced trauma life support (ATLS) guidelines: cervical collar application, logrolling, analgesic therapy, vitals normalized, and general condition stabilized. Skull traction was performed on admission. The patient underwent anterior cervical open reduction + C6/7 pedicle screw, and lateral mass screw internal fixation was performed.
Conclusion: We report a rare case of complete fracture dislocation of C5/C6 listhesis with bilateral facet lock, with C7 fracture, C7/T1 listhesis, and bilateral facet lock. The patient presented with quadriparesis and was successfully treated with posterior reduction and fusion. The mechanism of injury, which was thought to be flexion and compression, was deduced by the patient's history and the results of physical and neuroimaging examinations.
Del territorio heredado de la Colonia al de la República: Procesos de conformación de los límites internos y externos de Colombia
Authors: Orozco Cañas Cecilia , Martínez Toro Pedro Martín , Perdomo Cuenca Lina María
Published: March 2023

Aspecto fundamental en la constitución de cualquier Estado es el territorio sobre este tiene jurisdicción; sobre el que ejerce gobierno, soberanía y el imprime un orden. La definición del Estado, a partir de la independencia de España no es solo el territorio como tal, sino el imaginario de ocupación en el que se incluye el proyecto de creación del Estado, este imaginario clasista, rentista y expoliador del territorio dado en circunstancias de improvisación e informalidad no nace desde 1810 como año cero colombiano sino que viene desde el siglo XVI con la llegada de los conquistadores a estas tierras, imaginario que no ha variado hasta hoy. En realidad no heredamos el territorio de los españoles. Las etnias indígenas poseían estas tierras, con respeto a la madre naturaleza, desde tiempos inmemoriales. Los españoles nos cambiaron cosas importantes, como la lengua, la religión, la cultura, pero acabaron con casi todo: la población, el oro y los recursos naturales. Los reinos producto de la conquista en el continente americano eran varios: Nueva España, Galicia, Guatemala, Nueva Vizcaya, Nuevo León, Perú, Chile, Quito y Nueva Granada. En su interior existían las Provincias y las Audiencias, que tenían funciones judiciales, sin embargo, el gobierno se ejercía desde España. Tiempo después se subdividió el territorio en Capitanías. La delimitación de los territorios españoles en tiempos de la colonia no era fácilmente identificable. Existen diversos mapas de la época, en el “Atlas de Mapas Antiguos de Colombia”, pero no hay un estudio histórico sistemático que permita entender su geopolítica y su evolución, asida a los acontecimientos históricos y a la formación del Estado colombiano. Es por esta razón que encontramos en las distintas constituciones del siglo XIX expresiones repetidas en todas ellas como: “El territorio de Colombia es el mismo que comprendía el antiguo Virreinato de la Nueva Granada y la Capitanía General de Venezuela...”
HLPW-4: Wall-Modeled Large-Eddy Simulation and Lattice–Boltzmann Technology Focus Group Workshop Summary
Authors: Kiris Cetin C. , Ghate Aditya S. , Browne Oliver M. F. , Slotnick Jeffrey , Larsson Johan
Published: March 2023

A summary of the nine submissions to the Wall-Modeled Large-Eddy Simulation and Lattice–Boltzmann (WMLESLB) Technical Focus Group (TFG) at the 4th High lift Prediction Workshop is provided. The focus of this TFG was to assess the current capabilities of WMLES and LB methods on a complex high-lift configuration across a wide range of angles of attack. Analysis of the submitted data suggests that [Formula: see text] spatial degrees of freedom are needed to accurately predict pitching moments at high angles of attack due to large pressure gradients present on the outboard slat and main element for [Formula: see text] (corrected for free-air). While some scatter is reported in pitching moment coefficient at the low-angles of attack ([Formula: see text]), excellent agreement is observed between submissions near the [Formula: see text] state. Objective superiority of WMLES methods over Reynolds-averaged Navier–Stokes (RANS) can be seen in terms of lack of excess outboard separation; a majority of the WMLES and LB submissions predict wedge-shaped separation patterns consistent with the experimental oil flow. The in-tunnel simulations show excellent agreement with the experiment in terms of a) integrated loads, b) surface flow-topology, and c) mechanism for the onset of inboard stall. Further evidence is provided to demonstrate both qualitative and quantitative superiority of the WMLES submissions over RANS.
Distributed Absolute and Relative Estimation of Spacecraft Formations
Authors: Prabhu Kaushik , Alfriend Kyle T. , Rahmani Amir , Hadaegh Fred Y.
Published: March 2023

For optimal decision making and collaborative task performance in multispacecraft missions, it is essential for each spacecraft to maintain a state estimate of all the spacecraft in the formation. However, especially in the case of large formation sizes, each spacecraft may not be able to track or communicate with all other spacecraft. Further, for formations deployed in deep space, the unavailability of the Global Navigation Satellite System makes inertial state estimation challenging. We propose the Distributed Absolute and Relative Estimation (DARE) algorithm for autonomous inertial estimation of spacecraft formations. The algorithm enables each spacecraft to maintain an accurate inertial estimate of the entire formation even in the presence of observability and communication constraints. Each spacecraft utilizes measurements of feature points (landmarks) for inertial localization and measurements of neighboring spacecraft for relative localization. The algorithm is distributed and scalable to any number of spacecraft in the formation. A modified version of the algorithm called the Sparse Distributed Absolute and Relative Estimation (SDARE) algorithm is also derived. This algorithm is computationally more efficient at the expense of estimation accuracy, making it suitable for implementation on nanosatellites where resources are limited. Numerical simulation results demonstrating the effectiveness and comparing the performance of both algorithms are provided.
PROSES PENYELESAIAN SENGKETA GUGATAN KLAIM ASURANSI JIWA PT. AJB BUMI PUTERA (STUDI PUTUSAN NOMOR 170/PDT.G/2020/PN.TJK)
Authors: Erlina Erlina , Hesti Yulia , Ilham Muhammad
Published: March 2023

Asuransi atau pertanggungan merupakan sesuatu yang sudah tidak asing lagi bagi masyarakat Indonesia, dimana sebagian besar masyarakat Indonesia sudah melakukan perjanjian asuransi dengan perusahaan asuransi, baik perusahaan asuransi milik negara maupun milik swasta. Perusahaan asuransi merupakan lembaga keuangan non bank yang mempunyai peranan yang tidak jauh berbeda dari bank, yaitu bergerak dalam bidang layanan jasa yang diberikan kepada masyarakat dalam mengatasi risiko yang terjadi di masa yang akan datang. Metode yang digunakan dalam penelitian ini adalah metode yurisidis normatif. Hasil penelitian menunjukkan bahwa klaim dalam istilah asuransi diartikan sebagai permintaan atau tuntutan pembayaran manfaat sesuai dengan ketentuan yang diatur oleh polis asuransi. Klaim adalah aplikasi oleh peserta untuk memperoleh pertanggungan atas kerugian yang tersedia berdasarkan perjanjian. langkah proses klaim tiap perusahaan asuransi berbeda-beda namun pada dasarnya proses dilakukan oleh tertanggung dengan mengajukan klaim kepada penanggung yang selanjutnya akan diproses apahak proses disetujui atapun tidak disetujui. Dengan demikian  dapat dikatakan wanprestasi pelaksanaan kewajiban yang tidak dipenuhi atau ingkar janji atau kelalaian yang dilakukan antara para pihak baik karena tidak melaksanakan apa yang telah diperjanjikan maupun malah melakukan sesuatu yang menurut perjanjian tidak boleh dilakukan. Terdapat cara yang dapat ditempuh untuk menyelesaikan masalah sengketa antara pihak pihak yang terkait di dalam sebuah sengketa yakni melalui litigasi dan non litigasi.