bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pengetahuan, Persepsi, dan Sikap Masyarakat Sumatera Barat Terhadap COVID-19
Authors: Media Yulfira Media 
Published: February 2021

Tujuan penelitian adalah untuk menggambarkan pengetahuan, persepsi dan sikap masyarakat Sumatera Barat terhadap Covid-19. Metode penelitian menggunakan pendekatan deskriptif kuantitatif dengan metode survey menggunakan kuesioner yang disediakan dalam bentuk aplikasi google form. Pengumpulan data dilakukan secara purposive melalui beberapa media sosial seperti Whatsapp dan Facebook. Hasil penelitian mengungkapkan bahwa sebagian besar responden (99,20%) sudah mengetahui tentang Covid-19. Pengetahuan tentang sumber informasi tentang Covid-19 diperoleh responden terbanyak dari media online (78%) dan media sosial (75%). Sebagian besar responden sudah mempunyai pengetahuan tentang penyebab dan gejala Covid-19 serta cara mencegah penularan Covid-19. Persepsi dari 30,20% responden bahwa PSBB cukup efektif memutus mata rantai penularan, dan sebagian besar responden (62,85) mempunyai persepsi masyarakat kurang memiliki kedisipilinan dan kesadaran dalam penerapan PSBB. Sebagian besar responden menyatakan sikap tetap waspada dan menjaga jarak ketika ada tetangga yang anggota keluarga merupakan pasien positif (50, 30%). Respon terbanyak yang diungkapkan responden ketika mendapatkan informasi/ berita dari berbagai media tentang wabah Covid-19 adalah perasaan cemas/panic (41%). Rekomendasi penelitian yang diusulkan adalah optimalisasi sosialisasi dan edukasi tentang covid-19 kepada masyarakat dengan melibatkan tokoh adat, alim ulama dan tokoh masyarakat, mengoptimalkan gerakan sosialisasi dan penyebarluasan informasi penanganan covid-19 secara langsung dan massif ke masyarakat serta berkelanjutan melalui media komunikasi publik, mendorong masyarakat untuk meningkatkan kedisiplinan dan kesadaran dalam penerapan protokol kesehatan melalui peningkatan promosi kesehatan dan pemberdayaan masyarakat, optimalisasi pengawasan dan pengendalian penularan Covid-19 melalui regulasi/kebijakan daerah yang terkait penerapan tatanan kebiasaan hidup baru.

Kata kunci: pengetahuan, persepsi, sikap, Covid-19
Puerto Rico Health System Resilience After Hurricane Maria: Implications for Disaster Preparedness in the COVID-19 Era
Authors: Rios Christopher C. , Ling Emilia J. , Rivera-Gutierrez Ralph , Gonzalez Sanchez Juan , Merrell Sylvia Bereknyei , Bruce Janine , Barry Michele , de Jesus Perez Vinicio 
Published: February 2021

Background:Every year, Puerto Rico faces a hurricane season fraught with potentially catastrophic structural, emotional and health consequences. In 2017, Puerto Rico was hit by Hurricane Maria, the largest natural disaster to ever affect the island. Several studies have estimated the excess morbidity and mortality following Hurricane Maria in Puerto Rico, yet no study has comprehensively examined the underlying health system weaknesses contributing to the deleterious health outcomes.Methods:A qualitative case study was conducted to assess the ability of the UPR health system to provide patient care in response to Hurricane Maria. An established five key resilience framework and inductive analysis was used to identify factors that affected health system resilience. Thirteen Emergency Medicine Physicians, Family Medicine Physicians, and Hospital Administrators in a University of Puerto Rico (UPR) Community Hospital were interviewed as part of our study.Results:Of the five key resiliency components, three domains were notably weak with respect to UPR's resiliency. Prior to the Hurricane, key personnel at the UPR hospital wereunawareof the limited capacity of back-up generators at hospitals and were ill-prepared to transfer ICU patients to appropriate hospitals. Post Hurricane, the hospital facedself-regulationchallenges when triaging the provision of Hurricane-related emergency services with delivering core health services, in particular for patients with chronic conditions. Finally, during and after the Hurricane,integrationof patient care coordination between the UPR hospital ambulances, neighboring hospitals, and national and state government was suboptimal. The two remaining resiliency factors, addressingdiverseneeds and systemadaptivenessin a time of crisis, were seen as strengths.Conclusions:Hurricane Maria exposed weaknesses in the Puerto Rican health system, notably the lack of awareness about the limited capacity of backup generators, poor patient care coordination, and interruption of medical care for patients with chronic conditions. As in other countries, the current COVID epidemic is taxing the capacity of the Puerto Rico health system, which could increase the likelihood of another health system collapse should another hurricane hit the island. Therefore, a resilience framework is a useful tool to help health systems identify areas of improvement in preparation for possible natural disasters.
Identification of Hub Genes and Immune Infiltration in Psoriasis by Bioinformatics Method
Authors: Su Wenxing , Wei Yuqian , Huang Biao , Ji Jiang 
Published: February 2021

BackgroundPsoriasis is a chronic, prolonged, and recurrent skin inflammatory disease. However, the pathogenesis of psoriasis is not completely clear, thus we aimed to explore potential molecular basis of it.MethodsTwo datasets were downloaded from the Gene Expression Omnibus database. After identifying the differentially expressed genes of psoriasis skin lesion samples and healthy controls, three kinds of analyses, namely functional annotation, protein-protein interaction (PPI) network, and immune infiltration analyses, were performed.ResultsA total of 152 up-regulated genes and 38 down-regulated genes were selected for subsequent analyses. Evaluation of the PPI network identified the most important module containing 13 hub genes. Gene ontology analysis showed that the hub genes have a significant enrichment effect on positive regulation of cell migration, defense response to the other organism and epithelial cell differentiation. KEGG signaling pathway analysis showed that the hub genes were significantly enriched in chemokine signaling, Toll-like receptor signaling pathway, and IL-17 signaling pathway. Compared with the normal control sample, naive B cells, CD8+ T cells, activated memory CD4+ T cells, follicular helper T cells, gamma delta T cells, resting NK cells, monocytes, M0 macrophages, M1 macrophages, activated dendritic cells and neutrophils infiltrated more, while memory B cells, naive CD4+ T cells, regulatory T cells (Tregs), activated NK cells, resting mast cells, and eosinophils infiltrated less.ConclusionTo conclude, the hub genes and pathways identified from psoriasis lesions and normal controls along with the immune infiltration profile may provide new insights into the study of psoriasis.
The Relationship Between Prognostic Nutritional Index and Carotid Artery Stenosis in Patients with Diagnosed Carotid Artery Disease
Authors: SANRI Umut Serhat , ÖZSİN Kadir Kaan , DUMAN Burak , TOKTAŞ Faruk , YAVUZ Senol 
Published: February 2021

Objective: To investigate the relationship between prognostic nutritional index (PNI) and carotid artery stenosis (CAS).
Material and Methods: This retrospective observational study included patients undergoing carotid endarterectomy (CEA) and patients with non-critical CAS who received medical treatment. All data retrieved retrospectively from the hospital medical files. The values acquired from the patients during acceptance to the hospital were used in the calculation of PNI.
Results: There were 82 patients (68.3 % male, mean age: 70.5±8.9 years) in surgical group, and 79 patients (72.2% male, mean age: 62.0±9.1 years) were recorded in medical group. We detected statistically difference in surgical group in terms of higher BUN (p
Beekeeping Products for the Treatment and Prevention of Calf Disease (Analytical Review)
Authors: Красочко П.А. , Понаськов М.А. , Мороз Д.Н. 
Published: February 2021

Проблема антибиотикорезистентности становится всё более актуальной во всём мире, в том числе и в Республике Беларусь. В связи с этим наблюдается тенденция замены использования антибиотиков и других синтетических антимикробных препаратов на комплексные соединения на основе продуктов животного и растительного происхождения, в том числе пчеловодства. Авторами проведён анализ литературных источников о биологических свойствах продуктов пчеловодства и препаратов на их основе, используемых для лечения и профилактики болезней желудочно-кишечного тракта телят. Установлено, что для профилактики болезней и терапии животных с различными патологиями в ветеринарной медицине наиболее часто применяются: прополис, мёд, цветочная пыльца и перга. Данные продукты пчеловодства имеют сложный химический состав и обладают высокой биологической активностью. Показана высокая терапевтическая и профилактическая эффективность использования на телятах продуктов пчеловодства и препаратов на их основе.
The problem of antibiotic resistance is becoming more and more urgent throughout the world, including in the Republic of Belarus. In this regard, there is a tendency to replace the use of antibiotics and other synthetic antimicrobial agents with complex compounds based on products of animal and plant origin, including beekeeping. The authors analyzed literary sources on biological properties of beekeeping products and preparations based on them, used for treatment and prevention of calves’ gastrointestinal tract diseases. It has been established that for the prevention of diseases and therapy of animals with various pathologies in veterinary medicine, propolis, honey, pollen and bee bread are the most often used. These beekeeping products have a complex chemical composition and have high biological activity. The high therapeutic and prophylactic efficiency of using beekeeping products and preparations based on them on calves is shown.
The Use of Enzyme Immunoassay to Determine Mycotoxin Concentration in Organs, Tissues and Biological Fluids: Review
Authors: Панковец Е.М. , Лях А.Л. 
Published: February 2021

Представлен обзор опубликованных исследований, касающихся определения различных микотоксинов в органах, тканях и биологических жидкостях сельскохозяйственных животных и человека. Основной упор сделан на подробном описании пробоподготовки гомогенатов органов к иммуноферментному анализу (ИФА), а также приведены данные по сравнению хроматографических методов исследования с иммуноферментным анализом. Учитывая более доступную стоимость ИФА диагностики, по сравнению с хроматографическими методами, а также легковыполнимую подготовку образцов, ИФА более предпочтителен для так называемого скрининга по определению уровня кумуляции микотоксинов на свиноводческих комплексах, птицефабриках и на других крупных сельскохозяйственных производствах.
A review of published studies regarding the definition of various mycotoxins in organs, tissues and biological fluids of farm animals and humans is presented. The main emphasis is placed on a detailed description of the sample processing of organ homogenates for enzyme immunoassay (EIA) as well as data compared to chromatographic methods of the research with enzyme immunoassay. Considering the more affordable cost of EIA diagnostics in comparison with chromatographic methods as well as the quite easy preparation of samples, EIA is more preferred for so-called screening to determine the level of mycotoxin cumulation in pig breeding complexes, poultry farms and other large agricultural industries.
Evaluation Methods of Motor-and-Tractor Diesel Engines Operating Conditions
Authors: Антропов Б.С. , Капралов В.В. , Гумённый В.В. , Генералов В.А. 
Published: February 2021

При выборе метода оценки условий эксплуатации автотракторных дизельных двигателей необходимо учитывать, среди прочих факторов, наиболее часто используемые фазы движения конкретного автомобиля, от которых зависит режим работы двигателя. В статье предложены критерии качественной оценки условий эксплуатации для различных транспортных средств. Для оценки «тяжести» условий эксплуатации тракторов при выполнении различных сельскохозяйственных работ (пахота, боронование, посев и др.) целесообразно учитывать средний эксплуатационный расход топлива. В этом случае указанный параметр определяется отношением общего расхода топлива в литрах к общему времени выполнения трактором конкретной работы в часах. Для автобусов, работающих на маршрутах «Ярославль – центры муниципальных образований», как и для аналогичных перевозок в других регионах нашей страны, рассматриваемый параметр малоинформативен. Здесь для оценки их условий эксплуатации имеет смысл использовать коэффициент КS – количество остановок, приходящееся на один километр маршрута. Для автопредприятий, осуществляющих перевозки пассажиров по указанным маршрутам, рекомендуется проводить плановую ротацию автобусов по маршрутам согласно составленному графику, что позволит усреднить показатели надёжности узлов и агрегатов автобусов (неисправности и отказы) до их капитального ремонта.
When choosing a method for assessing the operating conditions of diesel motor engines, it is necessary to take into account, among other factors, the most commonly used phases of movement of a particular vehicle on which engine operating condition depends. The article proposes criteria for the qualitative assessment of operating conditions for various vehicles. It is advisable to take into account the average operational fuel consumption in order to assess the "heaviness" of tractor operation conditions when doing various agricultural works (plowing, harrowing, sowing, etc.). In this case, specified parameter is determined by the ratio of the total fuel consumption in liters to the total tractor time of the particular operation in hours. For buses operating on the routes "Yaroslavl – centers of municipalities", as for similar transportation in other regions of our country, the parameter under consideration is not informative. Here, to evaluate their operating conditions, it makes sense to use the KS coefficient – the number of stops per kilometer of the route. For automobile companies carrying out passenger transportation along the indicated routes, it is recommended to carry out a planned rotation of buses along the routes according to the made up schedule, which will allow averaging the individual reliability of bus assemblies (faults and failures) before their general overhaul.
Relationship between perovsktie solar cell efficiency and lattice disordering
Authors: Hirotani Daisuke , Nishimura Kohei , Hamada Kengo , Kamarudin Muhammad Akmal , Iikubo Satoshi , Shen Qing , Toyoda Taro , Hayase Shuzi 
Published: February 2021

Abstract
Multi-cations lead perovskite solar cells have shown higher performance than single-cation perovskite solar cells. This compositional engineering of perovskite material retains the optimum tolerance factor while allowing the tuning of the band gap in addition to the enhanced stability of cubic phase perovskite. However, no in-depth explanation has been provided on the relationship between crystal structure of the perovskite and the solar cell efficiency. In this report, we investigate the effect of lattice disordering of FA
x
MA1−x
PbI3 perovskite on the tolerance factor and solar cell efficiency. The lattice disordering estimated using Williamson–Hall plot of XRD analysis revealed that the disordering is lowest when x = 0.2 and highest when x = 1.0. Correspondingly, x = 0.2 showed the highest solar cell performance and long carrier lifetime Our results show that the disordering in α phase of FA
x
MA1−x
PbI3 layer causes lattice deformation which affects the carrier lifetime and solar cell efficiency, instead of the defects on constituent elements.
Light-induced persistent resonance frequency shift of MoS2 mechanical resonator
Authors: Inoue Taichi , Saito Tetsuki , Takei Kuniharu , Arie Takayuki , Miyata Yasumitsu , Akita Seiji 
Published: February 2021

Abstract
We investigate light-induced persistent resonance frequency shift on MoS2 mechanical resonators towards optically tunable nano-electro-mechanical systems with optical memory function. After the termination of light irradiation, the resonance frequency shifts downwards and the downshift is maintained for more than 20 min. This behavior is induced by trapped photogenerated holes at defects or contamination on MoS2 similar to the persistent photoconductivity. The trapped holes screen the electrostatic force acting on MoS2, which results in the reduction of the tension of MoS2. The downshift can be eliminated by applying the excess voltage pulse to MoS2 to induce Joule heating.
Effect of a calcined alumina additive amount on the properties of zirconia ramming mix on а phosphate bond
Authors: Martynenko V. V. , Kushchenko P. O. , Primachenko V. V. , Shulik I. G. , Protsak E. B. , Varganov V. V. , Tishina T. G. 
Published: February 2021

An effect of alumina additive amount on the main properties of ramming mix samples based on zirconia stabilized with calcium oxide on a phosphate bond was studied, as well as the processes of phase formation in these samples. It was found that, the alumina additive introduction activates the ZrO2 cubic phase destabilization, but does not cause softening of the samples structure. This is due to the fact that, as a result of the interaction of alumina with CaO released from the solid solution with ZrO2, elongated prismatic crystals of calcium hexaaluminate are formed, which reinforce and strengthen the samples structure. It was shown that, the samples composition containing 10 % alumina additive is optimal in terms of porosity, strength, and thermal shock resistance: ZrO2 + НfO2 — 83.52 wt. %; CaO — 3.86 wt. %; open porosity-— 15.9 %, cold crushing strength —62 N/mm2, thermal shock resistance (1300 ºС — water) — 6 thermal cycles, change in linear dimensions — 1 %. The obtained scientific results were used in the technology development of a new type of product — a mixture of powders for zirconia-alumina ramming mix, the manufacture of which was mastered at JSC "URIR named after A. S. Berezhnoy". The developed ramming mix is recommended for use, in particular, for making lining at the border of combustion and mixing zones of carbon black production reactors.
Deflocculants for refractory castables (review)
Authors: Chaplianko S. V. , Nikichanov V. V. 
Published: February 2021

Review and analysis of foreign studies aimed at researching the influence of various deflocculants on properties of refractоry castables have been executed. Technological efficiency of deflocculants application had been shown:– ADS/W brands comparison to polyacrylate and sodium threepolyphosphate in alumina-cement-based mixture in terms mass`s humidity reduction of 17 % and 22 % to obtain the required vibration flow (200 mm) and samples` compressive strength increase of 29 % and 56 %;
– M-ADS/W brands comparison to ammonium polymethacrylate and sodium hexametaphosphate in low-cement high-alumina castable in terms mass`s vibration flow increase of 5 and 14 %, samples’ compressive strength increase of 23 and 14 % for heat-treated at 110 °C and of 44 and 53 % for fired at 1500 °C;
– brand REFPAC MIPORE 20 comparison to Peramin AL200 in low-cement corundum-spinel castable in terms of mass`s vibration flow increase of 5 %, gas permeability increase in 15 times with samples` compressive strength decrease of 30 % and differences in water evaporation temperature, with samples’ size increasing, reduce to 3 °С (against 78 °С); in comparison with sodium threepolyphosphate in medium-cement corundum castable with cement content decrease of 2,5 % — gas permeability increase in 12 times and differences in water evaporation temperature reduce to 4 °С (against 50 °С); in multi-cement corundum castable with cement content decrease of 2,5 % — differences in water evaporation temperature reduce to 10 °C;
– brand REFPAC 100 comparison to polycarboxylate esters and sodium threepolyphosphate in terms of differences in flow of “freshly prepared” and “aged” low-cement castables, made using high-purity bauxite and silica fume, reduce to 17 % (against 19 and 41 %); vibration flow of “freshly prepared” and “aged” castables, made using lower quality materials, increase of 98 and 8 %;
– brands REFPAC 288:REFPAC 388 at ratio of 50:50 comparison to REFPAC 388 in low-cement corundum-spinel castables at ambient temperature of 5 °C in terms of vibration flow of “freshly prepared” and “aged” masses increase of 4 and 80 % with samples` compressive strength decrease of 7 % after curing and 4 % after drying; at ratio of 75:25 comparison to 62,5:37,5 at 20 °C — terms of vibration flow of “freshly prepared” and “aged” masses increase of 10 and 14 % with samples` compressive strength increase of 16 % after curing and 4 % after drying;
– brand REFPAC 500 comparison to Peramin AL 200 and/or Peramin AL 300 in low-cement castables with high-purity materials in terms of time for massive precipitation of calcium aluminate reduce in 10 and 3 times at temperatures of 5 and 20 °С, and also increase in 2 times at 35 °С;
– polycarboxylate esters with length side chain and very short side chain in low-cement corundum castable with lower and high-purity silica fume;
– brand FS 10 in cement-less corundum castable in terms of CMOR increase of 18 %, but comparison to sodium threepolyphosphate — to its reduction of 10 %.
Technology of slip casting of celsian-slavsonite ceramics
Authors: Lisachuk G. V. , Pitak Ya. М. , Krivobok R. V. , Chefranov E. V. , Voloshchuk V. V. , Maystat М. S. , Limarenko L. S. 
Published: February 2021

The article considers the slip casting technology of celsian-slavsonite ceramics with the ratio of raw materials to obtain crystalline phases of ВаAl2Si2O8: SrAl2Si2O8 – 25:75. The manufacture technology of product proceeded in two stages. The first stage of synthesis was performed in a muffle furnace at a rate of temperature of 15 deg / min at a maximum firing temperature of 1200 °C with a holding time of 2 hours. Then the synthesized ceramics were grinded for 10 minutes. The second stage was to obtain a slip with the addition of surfactants (DOLAPIX PC 67). The finished slip was poured into a plaster mold. Drying of the green sample was carried out in an oven at a temperature up to 110 °C for 3 hours. Firing of the dried sample was carried out in a muffle furnace at a rate of set temperature of 15 deg / min, at a maximum firing temperature of 1250 °C for 2 hours. The fired materials were subjected to machining. The obtained data indicate that, the best sample was fired at a temperature of 1250 ° C and had the following properties: dielectric constant — 9.4, water absorption — 5.9 %, open porosity — 14.4 %, apparent density — 2.42 g/cm3, flexural strength — 19 MPa.