bluuebunny/crossref_metadata_2025 huggingface dataset:
SOURCES OF SYNERGISTIC EFFECT OF TERRITORIAL CLUSTERS
Authors: Завьялов Александр Геннадьевич , Беденко Надежда Николаевна
Published: July 2021

В статье рассмотрены особенности внедрения кластерного подхода, как перспективного фактора ускорения социально-экономического развития субъектов Российской Федерации, способного выступать важным и эффективным двигателем экономического роста и развития конкурентоспособности территорий. Цель статьи - установление преимуществ развития кластеров непосредственно для участников и для региональных экономик в целом. В результате интеграции различных резидентов кластеров формируются реальные сетевые партнерства, получающие многообразные конкурентные преимущества и источники получения синергетических эффектов. При этом синергизм является не только характерной чертой кластерных структур, но стратегической целью интеграции их участников. Научная новизна заключается в определении видов потенциала для синергетического эффекта, а также условий, оказывающих влияние на устойчивость кластерных структур и результативность их проектов.

The article considers the peculiarities of the cluster approach implementation as a promising factor for accelerating the socio-economic development of the Russian Federation regions, which can act as an important and effective engine for economic growth and the development of the competitiveness of territories. The purpose of the article is to establish the advantages of cluster development directly for participants and for regional economies as a whole. As a result of the integration of different cluster residents, real network partnerships are formed, which receive a variety of competitive advantages and sources of synergy. At the same time, synergy is not only a characteristic feature of cluster structures, but also a strategic goal of integrating their participants. The scientific innovation consists in determining the types of potential for synergy, as well as the conditions that affect the sustainability of cluster structures and the effectiveness of their projects.
Cerebrospinal fluid heart fatty acid‐binding protein as a predictive biomarker of neurodegeneration in Alzheimer’s disease
Authors: Pan Lu , Ou Ya-Nan , Tan Lin , Tan Lan , Yu Jin-Tai
Published: July 2021

Objective

This study aims to investigate whether the heart fatty acid‐binding protein (HFABP) in the cerebrospinal fluid (CSF) was a potential predictive biomarker for Alzheimer’s disease (AD).

Methods

We evaluated the associations of CSF HFABP levels with core biomarkers, cognition, and brain structure in a sample population ( n = 302) from the Alzheimer’s Disease Neuroimaging Initiative (ADNI) database. Multiple linear regression and mixed‐effects models were employed in the analyses. AD progression was assessed using the Kaplan–Meier survival analysis.

Results

CSF HFABP was higher in patients with mild cognitive impairment and AD than the normal controls ( p < 0.001) and was particularly higher in those with amyloid‐β (Aβ) pathologic features. CSF HFABP was associated with higher baseline CSF t‐tau ( p < 0.001), CSF p‐tau ( p < 0.001), and CSF t‐tau/Aβ42 and CSF p‐tau/Aβ42 ( p < 0.01). Moreover, CSF HFABP was found to play predictive roles in hippocampal atrophy ( p < 0.01), cognitive decline ( p < 0.05), and the risk of AD ( p < 0.001).

Conclusion

Our findings suggest that CSF HFABP can be a predictive biomarker of AD.
Advances in computerized MRI‐based biomarkers in Alzheimer’s disease
Authors: Wong Raymond , Luo Yishan , Mok Vincent Chung-tong , Shi Lin
Published: July 2021

The use of neuroimaging examinations is crucial in Alzheimer’s disease (AD), in both research and clinical settings. Over the years, magnetic resonance imaging (MRI)–based computer‐aided diagnosis has been shown to be helpful for early screening and predicting cognitive decline. Meanwhile, an increasing number of studies have adopted machine learning for the classification of AD, with promising results. In this review article, we focus on computerized MRI‐based biomarkers of AD by reviewing representative studies that used computerized techniques to identify AD patients and predict cognitive progression. We categorized these studies based on the following applications: (1) identifying AD from normal control; (2) identifying AD from other dementia types, including vascular dementia, dementia with Lewy bodies, and frontotemporal dementia; and (3) predicting conversion from NC to mild cognitive impairment (MCI) and from MCI to AD. This systematic review could act as a state‐of‐the‐art overview of this emerging field as well as a basis for designing future studies.
Comorbidity of purulent meningitis with COVID‐19: A case report
Authors: Zhang Ping , Pan Chao , Wang Jiahui , Ma Yang , Zhang Huaqiu , Tang Zhouping
Published: July 2021

To date, only a few cases of intracranial infection related to severe acute respiratory syndrome‐coronavirus‐2 (SARS‐CoV‐2) were reported. Here we describe a case of coronavirus disease 2019 (COVID‐19) that was comorbid with purulent meningitis. A 62‐year‐old male patient was diagnosed with moderate COVID‐19 and had no fever or cough after treatment. However, he suffered from a head injury and experienced headache and fever immediately after the accident. Computed tomography (CT) of the brain showed bilateral frontal lobe contusion, subdural hematoma, and subarachnoid hemorrhage. In the following days, the patient suffered from recurrent fever, although chest CT did not show evidence of worsening of infection. Several lumbar punctures were made, confirming increased cerebrospinal fluid (CSF) pressure and karyocyte count. SARS‐CoV‐2 nucleic acid was not detected in CSF but revealed the presence of Escherichia coli. Thus, the patient was diagnosed with purulent meningitis, presumably caused by brain trauma or the immunologic dysfunction caused by COVID‐19, which was supported by the significant reduction of all kinds of immune cells. Since immunologic dysfunction is commonly presented in COVID‐19 patients, comorbidity with meningitis should be considered when a COVID‐19 patient presents with headache and fever. Lumbar punctures and CSF cultures may help in the diagnosis.
CUARTA REVOLUCIÓN INDUSTRIAL; HACIA LA TRANSFORMACIÓN LOGÍSTICA DE LA DEFENSA NACIONAL
Authors: RIQUELME OYARZÚN BENJAMÍN , VERA NOVA ALFONSO
Published: July 2021

Estamos en un mundo digital donde ya no se trata de mejorar sino de “cambiar” y para ser competitivos no solo se requiere de tecnología, sino también de un capital humano capacitado y educado, junto a líderes decididos a embarcarse en la 4ta Revolución Industrial.Comentar acerca de la logística 4.0 puede ser relativamente fácil, la complejidad surge cuando el objetivo, en este caso, es implementarla en las instituciones castrenses. Esta complicación ocurre en gran medida porque tenemos que adoptar nuevas formas de pensar y ver el mundo, ahora es inviable continuar con una visión parcelada del entorno, ya que la interconexión de equipos y los desarrollos en Tecnologías de la Información y la Comunicación (TIC), entre otros aspectos, nos obliga a comprender la realidad en forma sistémica, como un todo que interactúa en forma de red a través de flujos de información que en su curso va generando impulsos de “acción y reacción”.Así, el apoyo y sostenimiento logístico de las operaciones militares y polivalentes en este nuevo ambiente 4.0, constituye un desafío inevitable para el sector de la Defensa Nacional en su misión permanente que contribuye al desarrollo, seguridad y crecimiento de los países.
LAS RELACIONES ESTRATÉGICAS DE CHINA CON EL MUNDO OCCIDENTAL
Authors: COLE BERNARD D
Published: July 2021

El tema de este artículo, “Las relaciones estratégicas de China con el mundo occidental”, analiza algunos aspectos económicos y militares de las relaciones de la República Popular China (definida como la República Popular China o “China”) con Occidente, una región geográfica muy grande y variada, definida como América del Norte, Europa Occidental y América Latina, la última más definida para incluir América del Sur, América Central, México y el Caribe. Sin embargo, incluso dentro de esa definición, el debate se centra claramente debido a la brevedad de este documento
DESARROLLO SOSTENIBLE DE LA REGIÓN AMAZÓNICA BRASILEÑA: ¿¿UNA OPCIÓN ESTRATÉGICA PARA EL MANTENIMIENTO DE LA SEGURIDAD REGIONAL?
Authors: Do Nascimiento Cabral André Luiz
Published: July 2021

RESUMEN
EVOLUCIÓN DE LA POLÍTICA DE DEFENSA A TRAVÉS DE LOS LIBROS DE LA DEFENSA NACIONAL
Authors: Arancibia Clavel Daniel
Published: July 2021

resumen
Prawne aspekty wspomaganej prokreacji post mortem
Authors: Bączyk-Rozwadowska Kinga
Published: July 2021

W opracowaniu przedstawiono instytucję prokreacji post mortem, polegającą na poddaniu kobiety zabiegowi sztucznej inseminacji lub zapłodnienia pozaustrojowego po śmierci męża lub partnera. Analizie poddano przesłanki zastosowania tego rodzaju wyjątkowych i kontrowersyjnych praktyk, tj. zgodę dawcy gamet na ich użycie u kobiety post mortem, zachowanie tzw. czasowych ram prokreacji oraz autoryzację zabiegu przez sąd lub komisję państwową. Rozważania mają charakter prawnoporównawczy, z szerokim uwzględnieniem rozwiązań przyjętych w polskiej ustawie z dnia 25 czerwca 2015 r. o leczeniu niepłodności.
A comparison of haematological and biochemical blood indices between the Žemaitukai and Arabian horses participating in endurance competitions
Authors: Poškienė Indrė , Juozaitienė Vida , Antanaitis Ramūnas
Published: July 2021

The study was conducted on 30 clinically healthy Arabian horses and 28 Žemaitukai horses that competed in endurance race over the same distance (40 km). Blood samples were taken before and immediately after the exercise. The environmental conditions during the competitions varied, with a mean temperature of 22.5 °C and a mean relative humidity of 73.20%. The Žemaitukai horses showed lower haematological values and increased muscle catabolism after exercise. Arabian horses have higher aerobic capacity compared to the Žemaitukai horses which probably contributes to their superior low- to moderate-intensity exercise performance. Serum activity of muscle enzymes suggested that the muscle tissue of the Arabian horses has higher tolerance for exercise-induced muscle catabolism and lower muscle catabolism than that of muscle tissue of the Žemaitukai horses. Further studies need to be carried out to identify the diferences in muscle tissue of both breeds.
The effect of L-glutamine and trehalose on dog sperm cryopreservation
Authors: Öztürk Caner , Aksoy Neşe Hayat
Published: July 2021

This study aimed to test different doses of L-glutamine and trehalose in the canine semen diluent while determining their protective effects on spermatological and biochemical indices of the thawed samples. Semen samples were collected from three fertile dogs using the digital manipulation method. The mixed ejaculates were divided into five portions at 37 °C and diluted with additives. Five study groups were formed with L-glutamine (10 and 20 mM), trehalose (25 and 50 mM), and no additives (control). After the dilution, the semen samples were cooled for 1.5 h at 5 °C and frozen (-110 to -120 °C) in liquid nitrogen vapor. Then, they were stored at -196 °C. For spermatological evaluations, samples were thawed at 38 °C for 30 s. L-glutamine (20 mM) was found to be significantly different (P < 0.05) and led to higher percentages of motility, membrane integrity, and acrosome integrity compared to the control group. Considering the total oxidant status (TOS) assay, the lower values were determined in all the antioxidant groups compared to the control group (P < 0.05). Supplementing the semen extender with L-glutamine showed a higher total antioxidant status (TAS) concentration compared to the control group (P < 0.05). As a result of this study, a higher protective effect was found in all the spermatological evaluations after thawing the frozen semen samples, especially in the group containing L-glutamine (20 mM).
Generalized fractional Hadamard type inequalities for \(Q_s\)-class functions of the second kind
Authors:   Department of Mathematics, College of Science, University of Hafr Al Batin, P. O Box 1803 Hafr Al Batin 31991, Saudi Arabia, Omaba McSylvester Ejighikeme , Omenyi Louis O. ,   Department of Mathematics/Computer Science/Statistics/Informatics, Alex Ekwueme Federal University, Ndufu-Alike, Ikwo, Nigeria
Published: July 2021

New Hadamard type inequalities for a class of \(s\)-Godunova-Levin functions of the second kind for fractional integrals are obtained. These new estimates extend and generalize some existing results for the \(Q\)-class and \(P\)-class functions. The generalized case for the Katugampola fractional integrals are also given.
Democracy against Popular Sovereignty? (Faces of Power of the People: Theoretic Reconstruction)
Authors: Lokshin I.M.
Published: July 2021

In the article, on the basis of the classical political philosophers, the author distinguishes between three ideal-typical modi of political superiority of the people: “democracy”, “popular sovereignty” and “the natural right of the people to vindicate the supreme power”. Differen ces between them are drawn according to the criteria of (a) the distance between the holder of the supreme power and the holder of power that allows the routine management of the state, and (b) the degree to which the former controls the latter. The theoretic reconstruction of the modi of the political superiority of the people is based on identifying three ways to assert political superiority, expressed in the concepts of κράτος, sovereignty and vindication. This approach makes it possible to trace the specifics of each of the identified modi: “democracy” in its original (ancient Greek) sense is the power of the people, based on the obvious superiority (over the nobility) in their strength, in their excess of power, thanks to which the people are able to effectively implement their will in the public sphere; “popular sovereignty” makes the people a key political agent not by referring to their excess of power, but by securing their legal position as a source of laws and any public power; finally, “the natural right of the people to vindicate the supreme power” asserts the moral and teleological primacy of the people’s good over that of the rulers. According to the author’s conclusion, the three modi of the political superiority of the people differ from each other primarily in the extent to which the people are involved in the political process. Under “democracy” this extent is maximal, in the case of the “natural right to vindication” it is minimal, while “popular sovereignty” finds itself in the middle between these two extremes: both threats of the decisive “alienation” of the people from power and its usurpation by the “trustees” and tyranny of the people are absent. The author thinks that this middle ground of the “popular sovereignty” represents one of the reasons why it is this modus that symbolizes the architectonics of the modern democracy.
The attitude of biology teachers towards improvisation and utilization of instructional materials in teaching and learning biology in private secondary schools in Potiskum local government area
Authors: Nuhu Ibrahim  , Abba Alhaji Mohammed  , Musa Abdullahi  , Grace Ifemedike Uzoma  , Maryam Gambo Bizi
Published: July 2021

This study was carried out on the Attitude of Biology Teachers towards Improvisation and Utilization of Instructional Materials in Private Secondary Schools in Potiskum Local Government Area. Four research questions in line with the purpose of the study were formulated to guide the study. Descriptive survey research design was adopted for the study. The target group of the study was the entire 38 Biology teachers from 22 Private schools in Potiskum Local Government Area. Due to manageable size of the group, there is no sample and sampling technique used for the study as such the entire group was used for the study. Data were collected for the study through the administration of structured questionnaire. The data obtained were analysed using mean. The findings of the study revealed that, Biology teachers give students group projects to produce instructional materials and Biology teachers request that students bring materials in the environment to be used as improvised material during lessons. The findings of the study also revealed that, Biology teacher utilized improvised Visual aids like diagram, charts, posters, pictures and photographs for effective teaching of Biology, and Biology teachers utilized available resource person in the community to improvised instructional materials for teaching Biology. The findings of the study further revealed that, the use of Improvised Biology Materials helps the biology teachers to capture and sustain the curiosity and interest of the learners towards the lesson in schools and that the use of Improvised Biology Materials helps the biology teachers to motivate students in the subject being taught. The findings of the study also revealed that, lack of awareness on where to obtain facilities for improvising instructional materials and lack of motivation on part of government for Biology teachers in their efforts towards improvisation of instructional materials for teaching Biology are some of the problems faced by Biology teachers towards improvisation of Instructional Materials for Teaching and Learning of Biology in Private Secondary Schools in Potiskum Local Government Area. It was recommended that, Policy-makers in the secondary schools should raise fund so as to procure materials necessary for improvisation and purchase of textbooks that will facilitate the effective teaching of the course.
Konsep Diri Pustakawan Berprestasi Terbaik Tingkat Nasional Tahun 2017-2019
Authors: Meilinda Viska , Erza Elfitri Kurnia
Published: July 2021

Konsep diri merupakan suatu pemahaman dalam diri, melalui pandangan dan perasaan tentang diri yang timbul akibat interaksi dengan orang lain. Penelitian ini bertujuan untuk mengetahui konsep diri pustakawan berprestasi terbaik tingkat Nasional tahun 2017-2019 adanya keyakinan melalui pandangan dan penghargaan terhadap perasaan seseorang mengenai dirinya. Peningkatan terhadap kepribadian diri melalui personal branding dan  brand awareness yang menjadi kepercayaan diri untuk menggapai apa yang diinginkan. Metode Penelitian. Jenis penelitian kualitatif dengan metode eksplorasi. Pengambilan sampel menggunakan purposive sampling dan sampel yang digunakan sebanyak 10 informan dari populasi penelitian, yaitu pemenang pustakawan berprestasi terbaik tahun 2017-2019. Teknik pengumpulan data melalui: wawancara terstruktur dan studi dokumentasi. Teknik analisis data, yaitu reduksi data, penyajian dan penarikan kesimpulan. Hasil dan Pembahasan. Beberapa hasil penelitian menunjukkan: 1) Pustakawan mempunyai konsep diri dari adanya pengalaman di perguruan tinggi, memiliki hobi membaca buku di perpustakaan 2) Mengembangkan diri dari kepercayaan yang dilalui dengan aktif ikut asosiasi dan pelatihan pustakawan sesuai bidang 3) Terbentuknya brand awareness yang menjadi dukungan untuk berkomitmen, menujukkan ide dan aliran dari perilaku untuk mengembangkan kualitas profesionalisme.
Invertebrate hydrobiont fauna transformation in the Dombrovskyi pit lake during the period of 2014-2018
Authors:   Institute of Ecology of the Carpathians, NAS of Ukraine, Mykitchak T. , Kozlovskyy V. ,   Institute of Ecology of the Carpathians, NAS of Ukraine, Mateleshko O. ,   Uzhhorod National University
Published: July 2021

The aquatic invertebrate community of Dombrovskyi pit lake was investigated during 2014–2018. 25 species were recorded there. The only permanent component of plankton in the community is rotifer Brachionus plicatilis Müller, 1786; of benthos and neuston is hemipteran Sigara lateralis (Leach, 1817), beetle Hydrobius fuscipes (Linnaeus, 1758), flies Aedes sp., Ochlerotatus lepidonotus (Edwards, 1920), Culicoides salinarius Kieffer, 1914, Ephydra glauca Meigen, 1830 are permanent components of benthos and neuston. The main diversity of invertebrates is concentrated in littoral zone up to 2 m of depth. This is primarily due to the desalination of these areas by surface runoff. Over the last decade the mineralization of the surface water layer has decreased from 120–138 to 25–28 g/l. Combined with the desalination of water, the increase of species diversity of aquatic invertebrates was noticed in spring seasons (from 7 to 17 taxa). The freshwater taxa, which are not tolerant even to low water salinity, appeared in the community in 2018 (7–25 % of the species diversity), among them Hydrometra stagnorum (Linnaeus, 1758), Rhyacophila tristis Pictet, 1834, Coelambus impressopunctatus (Schaller, 1783), Enochrus coarctatus (Gredler, 1863), Hydrophilus caraboides (Linnaeus, 1758). The role of freshwater taxa, which are tolerant to low water salinity (up to 5 g/l), increased from 0–10 % of the species diversity in 2014–2015 to 22–35 % in 2018. Among them Eucyclops serrulatus (Fischer, 1851), Candona sp., Cypris pubera O. F. Müller, 1776, Cloeon dipterum (Linnaeus, 1760), Libellula depressa Linnaeus, 1758, Sympecta fusca Vander Linden, 1820, Paracorixa concinna (Fieber, 1848) was noted in 2018 for the first time. On the contrary, the number of saltwater taxa decreased from 20–29 % (2014–2015) to 5–14 % (2018). The saltwater aquatic invertebrate community of this pit lake has transformed into brakish-freshwater one over time. 83 % taxa of aquatic invertebrate communities from freshwater puddles near reservoir coast are noted in the Dombrovska reservoir. The introduction of species from protective canals of the reservoir is unlikely, as only 5 % of taxa from there are marked in it. The main way of the forming communities of invertebrates in this reservoir is the periodical flooding of freshwater coastal puddles.
PENGARUH DAUN JAMBU BIJI SEBAGAI INHIBITOR KOROSI ALAMI RANTAI KAPAL
Authors: Mulyaningsih Nani , Mujiarto Sigit , Ubaydilah Gyani
Published: July 2021

Corrosion is the interaction of metals with their environment which results in damage to metals. Corrosion can also occur in the chain of vessels that are usually located on the side of the ship's hull and are directly exposed to sea water. If it is not properly observed, the condition will damage and reduce the life of the ship chain. It is necessary to add inhibitors as substances to inhibit the corrosion rate. Inhibitors that are generally used are inhibitors that have toxic properties to the environment, therefore it is necessary to use organic inhibitors that do not damage the environment. The purpose of this study was to determine the effect of inhibitors of guava leaf extract on the corrosion rate of ship chains. This research was conducted by immersing specimens with concentrations of 6%, 9%, 12%, and immersion time of 1 hour. Corrosion rate is calculated using the dynamic potentiary polarization method. After calculating the corrosion rate, the inhibitor efficiency is calculated. After immersion is obtained, the inhibitor has an influence. This was shown after the corrosion test found that at a concentration of 9% inhibitors of guava leaf extract was able to reduce the corrosion rate of 0.066 mpy and has the highest efficiency value of 97.3%
ANALISIS QUENCHING MATERIAL DISC BRAKE DENGAN VARIASI MEDIA PENDINGIN TERHADAP KEAUSAN SPESIFIK
Authors: Sanubari Gilang Fitra , Salahudin Xander , Mulyaningsih Nani
Published: July 2021

Disc brakes are part of disc brakes which are generally circular in diameter and usually have small holes as heat release. Braking occurs because of the friction produced between the disc brake and the pad. Therefore, along with the usage time and distance of motorcycle disc brake, the wear will gradually experience wear due to the poor material properties. The purpose of the quenching process is to minimize wear that often occurs with disc brake material with analyze wear values disc brake before and after quenching treatment. This treatment is also solely used to obtain better wear-resistant properties. The wear resistance that can be achieved depends on the carbon content in the steel, the heating temperature, and the cooling media. The method used in this study is quenching at a temperature of 800°C and then held for 15 minutes and cooled using a variety of well water cooling media, salt solution and SAE 20 oil. The stages of the method include: research preparation, equipment and materials needed , testing process, data analysis. From the results of the wear test with a load of 2.12 kg for 60 seconds for each sample the results were obtained salt solutions have an average specific wear value decrease of 0.73 %
PENGARUH VARIASI KECEPATAN MESIN PENYUWIR DAGING TERHADAP HASIL AKHIR SUWIRAN
Authors: Widodo Sri , Wicaksono Arif , Suharno Kun , Mawarsih Endang
Published: July 2021

Daging merupakan salah satu jenis hasil ternak yang dapat diinovasikan dalam bidang industri pangan di Indonesia. Salah satu olahan makanan dari daging yaitu abon ayam. Pada umumnya proses untuk menyuwir daging dilakukan secara manual, yaitu dengan menumbuk menggunakan lumpang dan alu. Proses menyuwir daging dengan cara manual kurang efektif dan efisien. Selain itu dibutuhkan banyak tenaga untuk menyuwir daging. Beberapa pokok masalah tersebut memunculkan ide untuk menciptakan inovasi mesin penyuwir daging otomatis. Berdasarkan permasalahan tersebut, penulis meneliti tentang bagaimana pengaruh variasi kecepatan mesin penyuwir daging terhadap hasil akhir abon. Penelitian ini dilakukan dengan membandingkan variasi kecepatan penyuwiran 525 rpm, 600 rpm, dan 700 rpm dengan menggunakan batang penyuwir berjumlah 13 batang dengan diameter 12 mm. Jumlah pemasukan daging setiap pengujian 250 gram dengan waktu penyuwiran 30 detik. Penggerak mesin penyuwir daging menggunakan motor listrik dengan daya motor yaitu 0,5 HP. Hasil penelitian menunjukkan bahwa suwiran daging yang halus didapatkan dari variasi kecepatan 700 rpm. Sedangkan hasil suwiran yang kasar didapatkan dari pengujian dengan menggunakan variasi kecepatan 525 rpm. Kapasitas mesin penyuwir daging ini adalah 30 kg/jam.
PENGARUH PENGGUNAAN EKSTRAK KULIT MANGGIS PADA PROSES PEWARNAAN ANODIZING TERHADAP UJI KEKERASAN PADA TABUNG SHOCK LUAR SEPEDA MOTOR
Authors: Mulyaningsih Nani , Suharno Kun , Darmawan Ayub Adi , Saleh Arif Rahman
Published: July 2021

Pada zaman yang semakin maju kebutuhan akan material aluminium sangat diperlukan oleh masyarakat contohnya untuk pembuatan alat dan komponen otomotif, industri pabrik, pembangunan rumah bahkan hingga peralatan rumah tangga pun sudah banyak yang menggunakan aluminium. Oleh karana itu banyak industri berlomba-lomba untuk mengolah dan mengembangkan aluminium menjadi produk siap pakai. Salah satu industri tersebut adalah industri elektroplating yang menggunakan bahan kimia sebagai pewarna aluminium yang banyak merusak lingkungan. Berdasarkan permasalahan tersebut, penulis meneliti tentang penggunaan ekstrak kulit manggis pada proses pewarnaan anodizing terhadap uji kekerasan pada tabung shock sepeda motor. Spesimen material tabung shock luar sepeda motor termasuk dalam aluminium seri 4xx.x dengan unsur Si yang dominan yaitu sebesar 6,85% mendekati spesifikasi aluminium seri 408.2(X). Hasil pengujian kekerasan vickers pada material tabung shock luar tersebut dapat dilihat bahwa nilai awal material tabung shock yang diuji tanpa anodizing memiliki nilai VHN sebesar 88,4 kgf/mm2. Kemudian nilai VHN mengalami peningkatan setelah di anodizing selama 20 menit, 25 menit, dan 30 menit menghasilkan masing-masing nilai kekerasan sebesar 91,1 kgf/mm2, 106,0 kgf/mm2 dan 137,4 kgf/mm2. Oleh karena itu, disimpulkan bahwa semakin lama proses anodizing maka nilai kekerasan pun akan semakin meningkat dimana nilai rata-rata kekerasan tertinggi terdapat pada waktu anodizing 30 menit dengan waktu pewarnaan 20 menit sebesar 137,4 kgf/mm2.
STUDI POTENSI LIMBAH KULIT KOPI SEBAGAI SUMBER ENERGI TERBARUKAN DI WILAYAH JAWA TENGAH
Authors: Dewi Rany Puspita , Saputra Trisma Jaya , Widodo Sri
Published: July 2021

Biomassa menjadi salah satu sumber energi yang menjanjikan untuk mengurangi ketergantungan kita terhadap energi fosil. Salah satu sumber biomassa yang masih belum dimanfaatkan secara optimal dari hasil perkebunan yaitu berasal dari tanaman kopi. Kulit kopi sebagai by product dari proses pengolahan kopi masih dibuang begitu saja dan dapat menimbulkan pencemaran lingkungan. Tahun 2020, Provinsi Jawa Tengah memproduksi kopi sebesar 24,90 ton. Jumlah ini dapat menghasilkan limbah kulit kopi sekitar 8,71 ton. Limbah kulit kopi dapat dimanfaatkan menjadi briket melalui teknologi pembriketan. Hasil perhitungan analisis ekonomi menunjukkan bahwa harga jual briket kulit kopi per kg adalah Rp. 3.900,-. Laba bersih yang diperoleh selama 1 tahun dalam pembuatan briket kulit kopi adalah Rp. 14.085.000,-. Dibandingkan dengan bahan bakar lain (minyak tanah dan LPG), briket kulit kopi memiliki nilai kalor tidak jauh berbeda dengan harga yang lebih murah. Dari segi biaya, dibandingkan dengan bahan bakar minyak tanah, briket kulit kopi membutuhkan biaya yang jauh lebih rendah sekitar 54%
Genotypic diversity and live weight in the populations of the Chukchi breed reindeer
Authors: Brizgalov G. , Ignatovich L.
Published: July 2021

Purpose: study of associations of live weight and genotypic traits in reindeer populations.

Materials and methods. The studies were carried out in 2018-2020. on the basis of 8 agricultural enterprises in Chukotka. Tissue samples (ear pinch) of deer of different sex and age groups served as material for genetic studies. In molecular genetic studies, 1002 samples were used. Individual genotyping of animals was carried out using the ISSR-PCR method. The live weight of the reindeer was determined using the materials of the zootechnical reports of the reindeer farms. Associations of the average population indices of genetic diversity and live weight of deer were established by a calculation-statistical method of comparing the values of values. The correlation coefficient was calculated by the product method according to the Pearson formula.

Results. The variability of ISSR markers in populations indicates a significant similarity between them in most of the allelic frequencies, which confirms the common origin, economic and breeding use of the Chukchi breed deer. The populations are characterized by a high degree of heterogeneity. Differences in live weight between highly productive and less productive populations on average for all sex and age groups of deer amounted to 16.8%. At the same time, the populations with a high live weight of deer significantly exceeded the populations with a lower live weight in the average number of alleles per locus by 5.0% (P <0.01), the number of effective effective alleles - by 11.8% (P <0.001), polymorphic information content index (PIC) - by 35.8% (P <0.01). The homozygosity coefficient in the low-productive animals was 12.6% higher than in the high-productive group. In the populations with the highest live weight of deer - WZR, WAE and AMG, the most significant indicators of genetic diversity were also found: the average number of alleles per locus is 8.57; 10.45 and 8.71; effective alleles per locus - 7.57; 9.10 & 8.15; expected heterozygosity - 0.868; 0.890 & 0.877; PIC index - 0.248; 0.380 and 0.374, respectively. In populations with a low live weight of deer - OST and CHN, the smallest values of the number of active effective alleles per locus were found - 6.68 and 6.41; expected heterozygosity - 0.850 and 0.844, PIC index (proportion of heterozygotes) - 0.151 and 0.254. The correlation coefficient between the indicator of live weight and the genetic diversity of deer turned out to be equal for the average number of alleles per locus r = 0.335; the number of effective alleles - r = 0.52; heterozygosity - r = 0.558, the proportion of heterozygous variants - r = 0.646.

Conclusion. The data obtained make it possible to state the existence of a dependence of the live weight of deer on the genotypic diversity in the populations of the Chukchi breed.
Sorption extraction of rare-earth elements on sulfonic cation-exchange resin KU-2-8 from nitrate solutions of loparite concentrate development
Authors:   Dniprovsk State Technical University, Yelatontsev Dmytro , Mukhachev Anatoly ,   Institute of Geotechnical Mechanics named by N. Poljakov, National Academy of Sciences of Ukraine
Published: July 2021

The experimental-industrial study results of the process of sorption of rare-earth elements on sulfonic cation-exchange resin KU-2-8 from nitrate solutions of loparite concentrate development are presented. Values of different obtained elements are discussed. Different changes in processes are described. Reprocessing loparine raw materials in the close cycle without hydrochloric and sulfuric acid, and excess of normative sodium content in productional concentrate is possible. Keywords: ionite, sorption, loparite concentrate, rare-earth element, thorium.
The efficacy of preventive methods and their combinations in the preterm birth prevention
Authors:   Kharkiv Medical Academy of Postgraduate Education, Grishchenko O. V. , Korovai S. V. ,   Municipal non-profit enterprise "City perinatal center" of Kharkiv City Council, Lakhno I. V. ,   V.N. Karazin Kharkiv National University
Published: July 2021

Prediction and prevention of premature birth is a significant problem of modern obstetrics. The use of ultrasound cervicometry and the index of placental angiogenesis for the prediction of premature birth is promising. The aim of the study was to investigate the effectiveness of cerclage, pessary, intravaginal progesterone or their combinations in the prevention of premature birth. A total of 292 pregnant women were examined. They were divided into several groups according to the results of the detection of cervical length and the level of the ratio between placental growth factor (PlGF) and fms-like tyrosine kinase (sFlt-1). Group I included women with a negative screening’ resuls. Other groups included women with a «short» cervix and disturbed placental angiogenesis. In group II, women with cervical cerlage were observed. In group III — used a pessary; Group IV — vaginal progesterone; V — cobined use of cerclage and pessary; and in VI — use of cerclage and vaginal progesterone. The pregnancy was completed at term in 159 patients, and 133 women had preterm delivery. Among patients who had positive miscarriage screening results, the use of preventive measures or combinations resulted in fairly equal results. However, the use of progesterone and cervical cerclage has shown the best efficacy. Some limitations in this study were the small sample size and the lack of information on the use of anticoagulants, disaggregants and tocolytics in the examined women.
Problem aspects of compiling and obtaining informed voluntary consent for orthodontic treatment
Authors:   Center for Modern Dentistry, ", Rosiiskіi P. V. ,   Fibonacci",   Orthodontic Studio, Voroshilova Iu. O. ,   Center for Modern Dentistry, "Fibonacci" Orthodontic Studio, Taravneh Sh. ,   "S&T Dent" Dental Center, Kharkiv, Ukraine
Published: July 2021

Today, it should be recognized that the legislation of the Ministry of Health of Ukraine on obtaining informed voluntary consent of the patient to medical intervention, in the vast majority relate to general medical and dental practice. The use of orthodontic methods of treatment of dental pathology, especially in combination with modern surgical techniques, requires medical records to reflect specific issues: what information, to what extent it is necessary to inform the patient before orthodontic treatment. Insufficient disclosure leads to problems in the patient’s coordination of the plan, timing of treatment and understanding of possible complications, which can lead to aggravation of the doctor-patient relationship. The article analyzes more than 100 results of the completion of orthodontic interventions for the period of 2018–2020 years of practical activity, which revealed exciting questions from patients and made it possible to compile a generalized list of reasons for the occurrence of possible conflict situations. In the course of treatment, they were successfully eliminated and analyzed, which made it possible to establish the priority components of the practically useful volume of information in the text of the patient’s voluntary consent with the peculiarity of performing orthodontic work. Taking into account these aspects, the doctor gets the opportunity to provide specific argumentation and defense of his actions, prevention of professional misunderstandings and legal issues in dental practice.
Predictive value of atrial fibrillation catheter ablation on cognitive functions in patients with chronic heart failure
Authors:   V.N. Karazin Kharkiv National University, Zolotarova T. V.
Published: July 2021

Atrial fibrillation (AF) directly leads to a cognitive function decline regardless of the cerebrovascular fatal events, but it is unclear whether the sinus rhythm restoration and reducing the AF burden can reduce the rate of this decreasement. Data on the effect of radiofrequency ablation on patients’ cognitive functions are conflicting and need to be studied. The aim of the study was to evaluate the prognostic value of atrial fibrillation radiofrequency catheter ablation on cognitive functions in patients with chronic heart failure with preserved left ventricular ejection fraction. The impact of AF radiofrequency catheter ablation on cognitive function in 136 patients (mean age 59.7 ± 8.6 years) with chronic heart failure with preserved left ventricular ejection fraction and compared with 58 patients in the control group (58.2 ± 8.1 years), which did not perform ablation and continued the tactics of drug antiarrhythmic therapy was investigated. Cognitive function was assessed using the Montreal Cognitive Test (MoCA) at the enrollment stage and 2 years follow-up. Decreased cognitive function was defined as a MoCA test score < 26 points, cognitive impairment < 23 points. Two years after the intervention, there was a positive dynamics (baseline MoCA test — 25,1 ± 2,48, 2-year follow-up — 26,51 ± 2,33, p < 0,001) in the ablation group and negative in the control group (25,47 ± 2,85 and 24,57 ± 3,61, respectively, p < 0,001). Pre-ablation cognitive impairment was significantly associated with improved cognitive function 2 years after AF ablation according to polynomial regression analysis. The obtained data suggest a probable positive effect of AF radiofrequency ablation on cognitive functions in patients with preserved left ventricular ejection fraction.
Percepcija duhovnosti i duhovne srbi kao prediktor percepcije kompetencija u pružanju duhovne skrbi studenata sestrinstva
Authors: Prlić Nada , Podgorelec Franjo , Barać Ivana
Published: July 2021

Cilj istraživanja bio je ispitivanje percepcije duhovnosti, duhovne skrbi i kompetencija u pružanju duhovne skrbi studenata sestrinstva. Provedeno je presječno istraživanje u kojem je sudjelovalo 456 studenata sestrinstva. Instrumenti istraživanja bili su anketni upitnici: upitnik o općim obilježjima ispitanika, skala ocjena duhovnosti i duhovne skrbi (SSCRS) i skala kompetencija duhovne skrbi (SCCS). Rezultati provedenog istraživanja utvrđuju da postoji visoka razina percepcije duhovnosti i duhovne skrbi te kompetencija duhovne skrbi kod studenata sestrinstva. S obzirom na opća obilježja ispitanika pokazuje se da postoje razlike prema spolu, dobi, završenoj srednjoj školi, radnom iskustvu, vjerskoj pripadnosti, prakticiranju vjere, osposobljenosti za utvrđivanje duhovnih potreba. Rezultati regresijske analize pokazuju da su duhovnost i duhovna skrb značajni prediktori kompetencija duhovne skrbi.
»We have Found the Messiah« (John 1:41) - The Formation of Disciples in the Gospel of John
Authors: Nalewaj Aleksandra
Published: July 2021

The disciple is a seminal topic for every Evangelist. The Johannine image of the followers of the Rabbi from Nazareth diverges from the Synoptic vision. In the Fourth Gospel, the disciples follow and serve the Master – like in Mark, Matthew, and Luke – yet the Johannine Jesus does not ask them to break their family ties or leave anything behind. A narrative analysis of the Fourth Gospel lets Culpepper consider the disciples of Christ from the perspective of their literary functions and determine the criteria of their discipleship. The critic divides their formation process into three stages related to seeing, believing, and continuing in the word. In the eyes of the reader, the followers of Jesus – perceived individually or as a community – perform functions as role models or representatives. To be a disciple is to accept the gift of becoming a child of God (John 1:12), which presumes a broad, universal perspective. For this reason, the author of John uses the term »disciple« as many as seventy-eight times, »Twelve« – only four times, while the word »apostle« is never spoken.
ВПЛИВ ПОГОДНИХ УМОВ НА ФОРМУВАННЯ ПРОДУКТИВНОСТІ КОНЮШИНИ ЛУЧНОЇ НА ПРАВОБЕРЕЖЖІ ЛІСОСТЕПУ УКРАЇНИ
Authors: Польовий А. М. , Божко Л. Ю. , Барсукова О. А.
Published: July 2021

У статті представлено результати дослідження оцінки впливу погодних умов на ріст, розвиток і формування врожайності конюшини лучної, оскільки вирощування багаторічних трав є основою забезпечення кормової бази для вирощування тварин. Для виконання задачі були проаналізовані дані спостережень за продуктивністю конюшини лучної другого року життя і метеорологічними елеме-нтами за період з 1995 по 2015 роки. Аналіз впливу погодних умов на формування продуктивності включав погодні умови перезимівлі конюшини і умови впродовж вегетаційного періоду від відновлення вегетації до збирання насіння. Дослідження рядів урожайності сіна і насіння конюшини показали, що тенденція тренду урожайності сіна і насіння конюшини двохукісної характеризується зростанням, щорічне збільшення врожаю сіна за трендом становить 2,94 ц/га. Щорічні відхилення врожаїв від лінії тренда, зумовлені впливом погоди кожного конкретного року, коливаються від –3 ц/га до +20 ц сіна з га. Динаміка врожаїв насіння конюшини теж має характер зростання, але зростання слабке і становить щорічно 0,0023 ц/га. Встановлено, що серед чисельних показників, які визначають величину врожаю конюшини, значну роль відіграють умови перезимівлі. На Правобережжі ймовірність дуже низьких абсолютних мінімумів –18…–19 °С на глибині кореневої шийки конюшини становить близько 7 %. Імовірність абсолютних мінімумів на рівні критичної температури вимерзання конюшини лучної –15…–16 °С становить відповідно 12 % та 13 %. Аналіз значень коефі-цієнтів кореляції врожаїв насіння конюшини з різними показниками свідчать про те, що найзначнішу роль у формуванні продуктивності конюшини лучної відіграє сполучення комплексу окремих факторів. Упродовж вегетаційного періоду погодні умови червня для першого укосу та кінець липня і серпень для другого укосу конюшини. Це дало змогу отримати багатофакторну статистичну залежність урожаїв насіння конюшини лучної, зважаючи на комплекс метеорологічних величин.
ВПЛИВ КОРМОВОЇ ДОБАВКИ «ГУМІЛІД» НА ВІДТВОРЮВАЛЬНУ ЗДАТНІСТЬ СВИНОМАТОК
Authors: Шостя А. М. , Павлова І. В. , Усенко О. О. , Мороз О. Г. , Слинько В. Г. , Краснощок О. О. , Літвінов П. Ю.
Published: July 2021

Метою досліджень було встановити вплив речовин гумінової природи на прооксидантно-антиооксидантний гомеостазу у крові свиноматок і поросят під час стрес-факторів. В експеримен-ті використані поросні свиноматки породи велика біла, 5 з яких контрольної групи та 5 дослідної,які протягом експерименту отримували біологічно активну кормову добавку «Гумілід». Біохімічніпоказники крові є дзеркальним відображенням фізіологічного статусу тварин та характеризуютьфункціональний стан свиноматок у кожному підперіоді. Вміст СОД у крові свиноматок на початокдосліду (104-а доба поросності) та на 5-у добу після опоросу знизився на 19,6 % (p<0,01). Тоді як намомент відлучення спостерігалося ймовірне зростання показника на 21,5 % (p<0,01) порівняно зпочатковим періодом. Активність КТ від початку досліду і на 5-у добу опоросу знизилась на 38,4 %(p<0,001), зменшення концентрації на момент відлучення становило 8,1 %. Вміст у крові дієновихкон’югатів на 5-у добу після опоросу зазнав незначних коливань у бік зменшення порівняно з поперед-нім періодом на 1,8 % та на момент відлучення становив 4,8 %. Найбільшу кількість ТБК-активнікомплекси у крові свиноматок мали в період поросності 15,6 мкмоль/л. Додаткове згодовуваннясвиноматкам кормової добавки «Гумілід» у період поросності впливало на активацію перебігу анти-оксидантного захисту, оскільки антиоксиданти зменшувались, а продукти розпаду мали тенденціюдо незначного збільшення. Згодовування кормової добавки «Гумілід» поросятам дослідної груписприяло активному генеруванню СОД у крові на 5-у добу після народження та становило на 20,5 %більше, ніж у тварин контрольної групи. На момент відлучення цей показник був на 25 % (р<0,001)вище порівняно з контролем. Виявлено підвищення великоплідності на 9,4 % (p<0,01) відповідно доконтрольної групи тварин. Що, своєю чергою, призвело до збільшення маси гнізда при народжені на12,3 % (p<0,05). Уведення кормової добавки «Гумілід» до стандартного раціону свиноматок сприялозменшенню кількості мертвонародженних поросят на 66,6 % порівняно із контрольною групоютварин, що не отримувала препарат гумінової природи.
ПРО УДАРНУ ВЗАЄМОДІЮ ПАДАЮЧОГО ЗЕРНА ПШЕНИЦІ НА ЖОРСТКУ БЕТОННУ ОСНОВУ СИЛОСУ
Authors: Самойленко Т. В. , Арендаренко В. М. , Антонець А. В. , Кошова О. П.
Published: July 2021

Одним зі способів зниження ушкодження зерна є ощадне завантаження його в силоси для зберігання. Зниження ударної взаємодії зерна з робочими органами машин і механізмів є одним із показників технічного рівня сучасного сільськогосподарського виробництва. Питання передачі енергії удару, визначення імпульсів сил, коефіцієнтів відновлення і відскоку при падінні зерна на бетонне дно силосів недостатньо вивчені. Метою статті є теоретичне дослідження косого удару зерна об бетонне дно силосу внаслідок його вільного падіння. При визначенні ударної сили потрібно врахувати, що падаюче на бетонне дно зерно уже має деяку швидкість. У роботі наведено схему взаємодії падаючого зерна озимої пшениці із нерухомою жорсткою поверхнею. Момент удару розділено на два етапи. Перший етап характеризується зміною форми і стану тіла, що ударяється. На другому етапі відбувається відновлення початкової форми зернівки за рахунок її в’язкої пружно-пластичної деформації. На кожному етапі розглянуто та проаналізовано час і швидкість руху зернівки. Відповідно до проведеного аналізу та скориставшись другим законом Ньютона в імпульсній формі знайдено сумарний векторний імпульс удару зернівки. На підставі цього наведено формулу для знаходження максимальної сили контактної взаємодії зернівки з бетонною основою силосу при косому ударі. Скориставшись геометричними характеристиками зерна озимої пшениці та тривалістю розповсюдження звукової хвилі в бетоні, визначено миттє-вий ударний час, що враховує умовний діаметр зернівки озимої пшениці. За допомогою гіпотези Рауса визначено ударні імпульси по відповідним координатним осям та коефіцієнт відновлення при косому ударі зернівки об бетонну основу. Зважаючи на знайдений сумарний ударний імпульс, отримано залежність для визначення ударної сили зернівки об бетонне дно силосу при її косому ударі. Встановлено, що величина ударної сили залежить від швидкості і висоти падіння зернини, а також від фізико-механічних властивостей бетонного дна силосу та геометричних розмірів самої зернини. На основі отриманого рівняння обчислено величину ударної сили при падінні зернини пшениці на дно силосу. Показано, що ударна сила є функцією від ударного коефіцієнта тертя ков-зання, при його збільшенні ударна сила також збільшується. Це відбувається внаслідок більш тривалої взаємодії зернини із бетонним дном силосу, яке спричиняється тертям ковзання.