bluuebunny/crossref_metadata_2025 huggingface dataset:
Late chronotype is linked to greater cortical thickness in the left fusiform and entorhinal gyri
Authors: Zareba Michal Rafal , Fafrowicz Magdalena , Marek Tadeusz , Beldzik Ewa , Oginska Halszka , Domagalik Aleksandra
Published: June 2021

Humans can be classified as early, intermediate and late chronotypes based on the preferred sleep and wakefulness patterns. The anatomical basis of these distinctions remains largely unexplored. Using magnetic resonance imaging data from 113 healthy young adults (71 females), we aimed to replicate cortical thickness and grey matter volume chronotype differences reported earlier in the literature using a greater sample size, as well as to explore the volumetric white matter variation linked to contrasting circadian phenotypes. Instead of comparing the chronotypes, we correlated the individual chronotype scores with their morphometric brain measures. The results revealed one cluster in the left fusiform and entorhinal gyri showing increased cortical thickness with increasing preference for eveningness, potentially providing an anatomical substrate for chronotype-sensitive affective processing. No significant results were found for grey and white matter volume. We failed to replicate cortical thickness and volumetric grey matter distinctions in the brain regions reported in the literature. Furthermore, we found no association between white matter volume and chronotype. Thus, while this study confirms that circadian preference is associated with specific structural substrates, it adds to the growing concerns that reliable and replicable neuroimaging research requires datasets much larger than those commonly used.
Efficient control of dye molecules fluorescence in polydopamine via strong optical coupling in a SPASER nanoparticle
Authors: Melentiev Pavel , Khlebtsov Boris , Gritchenko Anton , Kudryavtsev Denis , Ivanov Igor , Mozhaeva Vera , Siniavin Andrei , Kang Bin , Tsetlin Victor , Balykin Victor
Published: June 2021

One of the main approaches of design and manipulation of the quantum emitters’ radiative properties is based on proper control of optical modes of the surrounding quantum emitter environment, leading to, in its ultimate case, to a strong regime of the emitter - environment interaction. In this Letter, we present the realization of a mesoscopic physical system (Au SPASER nanoparticle with polydopamine shell containing dye molecules Cy 7.5) in which the strong optical coupling regime allows: (i) to get rid of dye molecules quenching, (ii) to suppress photobleaching of dye molecules and (iii) to get a great enhancement of dye molecules fluorescence. We have reduced the rate of fluorescence quenching of dye molecules in PDA by 1000 times and increased the fluorescence emission rate of dye molecules by 30 time, thus preparing bright, nanoscale and biocompatible fluorescent probes suitable for bio-sensing applications. As an example of practical use of the probe, we demonstrate direct detection of single SARS-CoV-2 viral particle via fluorescence measurements of the probes attached to the viral particle through the antibodies.
Estimating Social Contacts in Mass Gatherings Through Agent-Based Simulation Modeling: Case of Hajj Pilgrimage
Authors: Tofighi Mohammadali , Asgary Ali , Tofighi Ghassem , Najafabadi Mahdi , Arino Julian , Amiche Amine , Rahman Ashrafur , McCarthy Zachary , Bragazzi Nicola , Thommes Edward , Coudeville Laurent , Bourouiba Lydia , Wu Jianhong
Published: June 2021

Most mass gathering events have been suspended due to the SARS-CoV-2 pandemic. However, with vaccination rollout, whether and how to organize some of these mass gathering events arises as part of the pandemic recovery discussions, and this calls for decision support tools. Hajj, one of the world's largest religious gatherings, was substantively scaled down in 2020 and it is still unclear if it will take place in 2021 and sub-sequent years. Considering the disease trends and vaccination conditions in the pilgrims’ country of origin, and the operational and logistical aspects of implementing public health measures, Hajj reopening conditions could be very complex. Simulating disease transmission dynamics during the Hajj season under differ-ent conditions can provide some insights for better decision-making. Since most disease risk assessment models require data on the number and nature of possible close contacts between individuals, we seek to use integrated agent-based modeling and discrete events simulation techniques to capture risky contacts among the pilgrims in one of the Hajj major sites, namely Masjid-Al-Haram. In particular, we assessed different scenarios concerning the total number of pilgrims and enforced physical distancing measures. Our simulation results show that a plethora of risky contacts may occur during the rituals. Also, as the total number of pilgrims increases at each site, the number of risky contacts increases, and physical distancing measures may be challenging to maintain beyond a certain number of pilgrims in the site.
Employees’ Psychological Capital, Burnout, and Quality of Work-Life in Vietnamese Enterprises: Moderating Effects of Individual and Organisational Characteristics
Authors: Mai Hong Nguyen  , Vu Minh Ngo
Published: June 2021

Drawing from Positive Organisational Behaviour theory, this research studies the interrelationships of psychological capital, burnout, and quality of work-life with the highlighted moderation of organisational and personal characteristics. The proposed research model on these interrelationships is verified with a sample of 302 employees in both Vietnamese public and private enterprises and the structural equation modeling (SEM) techniques. The results suggest that psychological capital is positively related to the quality of work-life and is negatively related to employees’ burnout. In contrast, burnout is negatively related to the quality of work-life. These results suggest the mediating effects of burnout in the relationship between psychological capital and quality of work-life. Additionally, findings show that organisational ownership characteristics moderate the impacts of psychological capital on burnout and those of burnout on employees’ quality of work-life as well. However, the moderating effects of demographic characteristics (age and gender) are insignificant. These findings provide several implications for managers to take the advantages of psychological capital in their recruiting, training, and career development programs for employees.
Growth performance, tolerance and vigor dynamics of Salvia candidissima subsp. occidentalis Hedge against heavy metal contamination
Authors: IŞIK Gülçin
Published: June 2021

In this study, ecotoxicological and ecophysiological effects of some different heavy metal compounds (CdCl2, PbCl2, and CuCl2) on Salvia candidissima subsp. occidentalis Hedge (Lamiaceae) were examined. Seeds of this plant were exposed to three different concentrations of CdCl2 (2, 6, 10 ppm), PbCl2 (50, 100, 500 ppm), and CuCl2 (20, 60, 150 ppm). The results indicated that increasing CdCl2 and PbCl2 concentrations had no specific inhibitory impacts on seed germination rates, growth performance, biomass, and seedling vigor index, but increasing concentrations of CuCl2 had significant inhibitory effects on these parameters. The metal tolerance index of all applications showed that all heavy metal treatments reduce this value.
A Relational Theory of Mental Illness – Lacking Identity and Solidarity with Others
Authors: Metz Thaddeus
Published: June 2021

U radu težim napredovati do filozofijskog cilja utvrđivanja što, ako išta, sve mentalne bolesti imaju zajedničko, pri čemu pokušavam objediniti velik podskup onih s relacijskom ili interpersonalnom dimenzijom. Jedna je glavna tvrdnja ta da, želimo li obećavajuću teoriju
mentalne bolesti, moramo ići onkraj dominantnog zapadnog pogleda na mentalnu bolest / mentalno zdravlje koje se usmjerava na karakteristike intrinzične za osobu, kao što su bol / užitak, letargija / životnost, fragmentacija / integracija i lažnost / autentičnost. Druga je glavna tvrdnja ta da su relacijski aspekti mentalne bolesti teorijski plauzibilno razumljivi u smislu nemogućnosti osobe da se identificira s drugima ili pokazuje s njima suosjećanje, što su istaknute relacijske vrijednosti u afričkoj filozofijskoj tradiciji. Pokazujem da ova dva ekstrinzična svojstva dobro objašnjavaju nekoliko intuitivnih oblika mentalnih bolesti, uključujući, među ostalim, bivanje nasilnim, psihopatskim, narcističkim, teatralnim, paranoidnim i fobičnim.
Self, Agency and Autonomy in Dynamical Living Systems
Authors: Negru Teodor
Published: June 2021

U ovom je radu moja namjera ponuditi novo objašnjenje sebstva iz teorijskih perspektiva biologije i dinamičkih sustava. To znači da podržavam ideju da je sebstvo posljedica bioloških kontrolnih mehanizama, bilo unutarnjih procesa ili kao ishod međudjelovanja organizma i okoliša. Iz perspektive teorije dinamičkih sistema, sebstvo se može razumjeti kao svežanj uzoraka proizlazećih iz prilagodbe živućeg sustava na uvjete okoliša. U prvom dijelu rada, sebstvo se razumijeva polazeći od tri obilježja živućih sustava koji su rezultat samoorganizacije organske materije: identitet, jedinstvo i samoodržavanje. U drugom dijelu, raspravljam o jednom od najvažnijih obilježja sebstva: svjesnom djelovanju. Značenju svjesnog djelovanja pristupa se kao da se sastoji od tri dijela: sprega organizma sa svijetom, upravljanje unutarnjim i vanjskim procesima te predviđanje. Zaključno, raspravljam o problemu veze između sebstva i autonomije, pri čemu razmatram sebstvo kao posljedicu stupnjeva slobode živućeg sustava.
A case report of Abrikossoff`s tumor of cecum treated by endoscopic submucosal dissection
Authors: Mtvralashvili D. A. , Vasilyevykh T. A. , Mainovskaya O. A. , Likutov A. A. , Veselov V. V. , Vaganov Yu. E.
Published: June 2021

Introduction. Granular cell tumor (GCT, synonym – Abrikossoff’s tumor) is a benign neoplasm of neuroectodermal differentiation from epithelioid cells originating from Schwann’s cells, with a characteristic sign of the presence of lysosomal granules in the cytoplasm. 5–10% of GCTs are found in the gastrointestinal tract, with the most frequent localization in the esophagus, large intestine (the right colon) and perianal zone. Most often, the tumor occurs at the age of 40–60 years, in women. As a rule, the tumor is single, but it can be multiple and associated with various hereditary syndromes, in particular, type 1 neurofibromatosis. A rare malignant variant of GCT with local spread and the possibility of metastasis has been described. At the moment, less than 100 clinical cases with tumor localization in the cecum have been described.Clinical case. A 36-year-old patient with nonspecific complaints of constipation and recurrent abdominal pain during diagnostic colonoscopy a submucosal formation in the cecum up to 1 cm in diameter, dense, fixed in the submucosa, with an unchanged mucous membrane above it was revealed. A biopsy was taken, in which a granular cell tumor was suspected. The tumor was removed by the endoscopic submucosal dissection, and the subsequent morphological and immunohistochemical studies, which confirmed a granular cell tumor (Abrikossoff’s tumor).Conclusion. Granular cell tumor of the colon is a rare, non-specific tumor that can be detected during routine diagnostic endoscopic examination. The diagnosis of GCT is established by morphological examination and immunophenotyping of the removed neoplasm. Removal of the tumor by the endoscopic submucosal dissection can be a radical method of treatment for patients with GCT in the colon.
Hair loss due to a new coronavirus infection: treatment approaches
Authors: Sakania L. R. , Melnichenko O. O. , Korsunskaya I. M.
Published: June 2021

Stress has always been one of the triggers of hair loss. The global pandemic of COVID-19 infection has become such a factor for many people. Considering that the pathogenesis of hair loss in this infection has not been sufficiently studied yet, many authors suggest that, as the infection itself and the associated psychoemotional condition and the therapy can cause diffuse thinning of hair and androgenic alopecia. Several studies demonstrate a link between androgens involved in the pathogenesis of COVID-19 and the possible development of androgenic alopecia. Other researchers have observed many cases of telogen hair loss associated with this infection. In our practice, we also encounter diffuse hair thinning, presumably caused by COVID-19. Often, many patients do not consider necessity of consulting with doctor for hair loss. They look for medical help only when self-medication does not give the expected result. After these attempts to independently conduct therapy in some cases patients develop negative attitude towards certain drugs. In such cases, the doctor’s task is to adequately assess the patient’s condition and offer the optimal therapy in each specific case. Often, diffuse hair thinning of a telogen nature, which has arisen against the background of various infections, can be stopped without the help of drugs. The article describes the experience of applying care products with natural and innovative components in the fight against COVID-19-induced alopecia, which can be applied in the practice of a dermatologist.
A influência da maturidade do campo institucional na legitimidade do empreendedor institucional varejista
Authors: Silva André Luiz Barbosa da , Parente Juracy
Published: June 2021

Este artigo tem como objetivo descrever como o grau de maturidade institucional do polo varejista de rua pode influenciar na construção da legitimidade do empreendedor institucional varejista (EIV’s). O estudo está fundamentado na abordagem qualitativa com estudo de caso múltiplo envolvendo empreendedores institucionais no projeto de revitalização, totalizando oito polos varejistas brasileiros. A pesquisa contribui para o campo da Teoria Institucional, mais precisamente a vertente do empreendedorismo institucional ao demostrar que diferentemente da Teoria existente, os resultados demostram que mesmo seguindo os preceitos teóricos propostos para construção da legitimidade, os empreendedores institucionais não conseguiram realizá-la. Isso correu em decorrência das características do campo “pré-emergente” que não apresentou um grau mínimo de institucionalização necessária para garantir a atuação integral do empreendedor institucional varejista no processo de revitalização. Desta forma, a pesquisa reforça que, além de apresentar comportamentos de empreendedores institucionais e possuir um projeto relevante em benefício dos atores, deve-se analisar antecipadamente a maturidade do campo e perfil dos atores para posteriormente delinear estratégias de construção de legitimidade.
Tecnologia e inovação no setor de defesa: uma perspectiva sistêmica 2013
Authors: Pirró e Longo Waldimir , de Sousa Moreira William
Published: June 2021

Este trabalho explora a perspectiva sistêmica para a análise dos processos de desenvolvimento científico-tecnológico a partir da II Guerra Mundial, tendo como ponto de partida a experiência norte-americana. A partir da base conceitual inerente aos sistemas de inovação, analisa-se as condições para o desenvolvimento de um sistema setorial de inovação que atenda às demandas do setor de defesa no Brasil. Considerações finais indicam a existência de óbices e desafios decorrentes das peculiares da realidade nacional.
Non-revenue water ratio prediction with serial triple diagram model
Authors: Kızılöz Burak , Şişman Eyüp
Published: June 2021

Water administrations attempt to control the Non-Revenue Water Ratio (NRWR) values in sustainable and well-performing water distribution infrastructures. In this respect, the NRWR value prediction through appropriate models over a small number of controllable variables is significant. The collection, monitoring, and predictions of data on variables that are used in the NRWR calculations are not practical and required significant time besides financial resources. In this study, the NRWR predictions have been made through the suggested method over three parameters. The model prediction accuracies, in the literature obtained by using the Triple Diagram Model (TDM) over two parameters, have been increased through the Serial Triple Diagram Model (STDM) suggested in this study. This method shows that better predictions are possible in the NRWR modeling. Thanks to the model applications developed in this study, water administrations can make predictions with the least error (less than 10% relative error) and certain variables, according to the characteristics of each water distribution network.
Water-source contributions to barrier lakes and water-rock interactions in the Wudalianchi volcanic area, Northeast China
Authors: Zou Junyu , Song Zefeng , Duan Yamin
Published: June 2021

Wudalianchi is a typical continental Cenozoic volcanic group rich in potassic volcanic rocks (Northeast China). Five hydrologically connected barrier lakes (Lakes 5 to 1) and upwelling cold mineral springs occur, forming a complex lake-groundwater system. Clarifying the water-source contributions and the role of water-rock interactions in the hydrological cycling for barrier lakes remains a challenge from scientific and engineering perspectives. In this study, seasonal variations of multiple isotopes were analyzed. δ18O and δD data indicate that the Wudalianchi lakes were mainly fed by mineral springs. The values, however, were greatly influenced by precipitation (rain and snow) and varying evaporation intensities. In contrast, 87Sr/86Sr ratios varied little between seasons (0.70701–0.7079), suggesting similar water-rock interactions through time. Nonetheless, Sr isotopic mixing models suggested that shallow mineral springs generally contributed >50% of the water to lower reaches. In contrast, the upstream wetland contributed >50% to Lake 5 and decreased down-valley (10.3–53.6%). Calculations based on the δ18O and δD Rayleigh fractionation equation suggest that evaporation in upper reaches was higher than the lower reaches. The evaporation in July was generally higher than in October. This study demonstrates the homogenous water-rock interactions and the associated water mixing effects on the terrestrial volcanic area.
Tracking Stress, Mental Health, and Resilience Factors in Medical Students Before, During, and After a Stress-Inducing Exam Period: Protocol and Proof-of-Principle Analyses for the RESIST Cohort Study (Preprint)
Authors: Fritz Jessica , Stochl Jan , Kievit Rogier A , van Harmelen Anne-Laura , Wilkinson Paul O
Published: June 2021

BACKGROUND

Knowledge of mental distress and resilience factors over the time span from before to after a stressor is important to be able to leverage the most promising resilience factors and promote mental health at the right time. To shed light on this topic, we designed the RESIST (Resilience Study) study, in which we assessed medical students before, during, and after their yearly exam period. Exam time is generally a period of notable stress among medical students, and it has been suggested that exam time triggers mental distress.

OBJECTIVE

In this paper, we aim to describe the study protocol and to examine whether the exam period indeed induces higher perceived stress and mental distress. We also aim to explore whether perceived stress and mental distress coevolve in response to exams.

METHODS

RESIST is a cohort study in which exam stress functions as a within-subject natural stress manipulation. In this paper, we outline the sample (N=451), procedure, assessed measures (including demographics, perceived stress, mental distress, 13 resilience factors, and adversity), and ethical considerations. Moreover, we conducted a series of latent growth models and bivariate latent change score models to analyze perceived stress and mental distress changes over the 3 time points.

RESULTS

We found that perceived stress and mental distress increased from the time before the exams to the exam period and decreased after the exams to a lower level than before the exams. Our findings further suggest that higher mental distress before exams increased the risk of developing more perceived stress during exams. Higher perceived stress during exams, in turn, increased the risk of experiencing a less successful (or quick) recovery of mental distress after exams.

CONCLUSIONS

As expected, the exam period caused a temporary increase in perceived stress and mental distress. Therefore, the RESIST study lends itself well to exploring resilience factors in response to naturally occurring exam stress. Such knowledge will eventually help researchers to find out which resilience factors lend themselves best as prevention targets and which lend themselves best as treatment targets for the mitigation of mental health problems that are triggered or accelerated by natural exam stress. The findings from the RESIST study may therefore inform student support services, mental health services, and resilience theory.
Perceived Usefulness, Competency, and Associated Factors in Using District Health Information System Data Among District Health Managers in Tanzania: Cross-sectional Study (Preprint)
Authors: Simba Daudi , Sukums Felix , Kumalija Claud , Asiimwe Sarah Eden , Pothepragada Sai Kumar , Githendu Patrick Warui
Published: June 2021

BACKGROUND

Tanzania introduced District Health Information Software (version 2; DHIS2) in 2013 to support existing health management information systems and to improve data quality and use. However, to achieve these objectives, it is imperative to build human resource capabilities to address the challenges of new technologies, especially in resource-constrained countries.

OBJECTIVE

This study aimed to determine the perceived usefulness, competency, and associated factors in using DHIS2 data among district health managers (DHMs) in Tanzania.

METHODS

This descriptive cross-sectional study used a quantitative approach, which involved using a self-administered web-based questionnaire. This study was conducted between April and September 2019. We included all core and co-opted members of the council or district health management teams (DHMTs) from all 186 districts in the country. Frequency and bivariate analyses were conducted, and the differences among categories were measured by using a chi-square test. P values of <.05 were considered significant.

RESULTS

A total of 2667 (77.96%) of the expected 3421 DHMs responded, of which 2598 (97.41%) consented and completed the questionnaires. Overall, the DHMs were satisfied with DHIS2 (2074/2596, 79.83%) because of workload reduction (2123/2598, 81.72%), the ease of learning (1953/2598, 75.17%), and enhanced data use (2239/2598, 86.18%). Although only half of the managers had user accounts (1380/2598, 53.12%) and were trained on DHIS2 data analysis (1237/2598, 47.61%), most claimed to have average to advanced skills in data validation (1774/2598, 68.28%), data visualization (1563/2598, 60.16%), and DHIS2 data use (1321/2598, 50.85%). The biggest challenges facing DHMs included the use of a paper-based system as the primary data source (1890/2598, 72.75%) and slow internet speed (1552/2598, 59.74%). Core members were more confident in using DHIS2 compared with other members (P=.004), whereas program coordinators were found to receive more training on data analysis and use (P=.001) and were more confident in using DHIS2 data compared with other DHMT members (P=.001).

CONCLUSIONS

This study showed that DHMs have appreciable competencies in using the DHIS2 and its data. However, their skill levels have not been commensurate with the duration of DHIS2 use. This study recommends improvements in the access to and use of DHIS2 data. More training on data use is required and should involve using cost-effective approaches to include both the core and noncore members of the DHMTs. Moreover, enhancing the culture and capacity of data use will ensure the better management and accountability of health system performance.
Effectiveness of using SOKARY Mobile Application on compliance of the patient with Type II diabetes: A quasi-experimental study. (Preprint)
Authors: Bayoumi Sr Magda
Published: June 2021

BACKGROUND

Mobile health applications are an easy, friendly access method for enhancing patient’s compliance and overall health status.

OBJECTIVE

This study aimed to evaluate the effect of using mobile health applications on patients’ compliance.

METHODS

A Quasi-experimental design was used with a purposeful sample of 150 subjects who have been diagnosed with type II diabetes were recruited. SOKARY android mobile application diabetes App was selected mobile health application in Arabic interface included many features recording blood glucose level, nutrition and physical activity with medication reminders and healthy lifestyle advice notifications.

RESULTS

The findings showed that the effectiveness of post using of Mobile App on patient’s compliance is statistically significant 52.64+5.1, (p=0.000). Obviously, the improvement is statistically significant as recognized in lowering the level of HbA1c (p> 0.029) and BMI (p>0.006) and increasing level of activity (p>0.002) and overall patient’s compliance (p>0.004).

CONCLUSIONS

In conclusion, the results reported significant improvement that recommends the use of mobile health applications among patients with chronic diseases.

CLINICALTRIAL

ClinicalTrials.gov Identifier: NCT04843592
Two Different Classes of Shrinkage Estimators for the Scale Parameter of the Rayleigh Distribution
Authors: Omer Talha , Hussain Zawar , Qasim Muhammad , Shah Said Farooq , Khan Akbar Ali
Published: June 2021

Shrinkage estimators are introduced for the scale parameter of the Rayleigh distribution by using two different shrinkage techniques. The mean squared error properties of the proposed estimator have been derived. The comparison of proposed classes of the estimators is made with the respective conventional unbiased estimators by means of mean squared error in the simulation study. Simulation results show that the proposed shrinkage estimators yield smaller mean squared error than the existence of unbiased estimators.
BAĞLAMADA TEMEL İCRA TEKNİKLERİNİN BAĞLAMA ÖĞRETİM METOTLARINDAKİ KULLANIM DURUMU
Authors: AKKAŞ Salih , GÜLER Emirhan
Published: June 2021

Çalgı öğretiminde metot çalışmalarının çok önemli bir role sahip olduğu bilinmektedir. Bağlama için de birçok metodun yazıldığı görülmektedir. Ancak bağlama için yazılan metotlar incelendiğinde birçok farklılığın olduğu göze çarpmaktadır. Bu farklılıklardan biri; bağlama icra tekniklerinin terminolojik ve sembolik açıdan çeşitli şekillerdeki kullanımıdır. Bağlamadaki herhangi bir icra tekniğinin farklı isimlendirilmesinin ve farklı sembollerle gösterilmesinin eğitim ve öğretim açısından çeşitli problemlere yol açtığını söylemek mümkündür. Araştırma durum tespiti yapmaya yönelik olup betimsel bir özellik sergilemektedir. Veriler kaynak taraması yapılarak elde edilmiştir. Toplam 35 adet bağlama öğretim metodu tespit edilmiş olup bu metotlar benzer ve farklı yönleriyle incelenmiştir. Sonuç olarak bağlama öğretim metotlarında bazı icra tekniklerinin aynı bazılarının farklı kullanıldığı, bazılarında ise hiçbir icra tekniğine yer verilmediği görülmüştür.
Desafios na gestão escolar
Authors: Santos Almir Paulo dos , Prsybyciem Moises Marques , Bonez Juliane
Published: June 2021

Este artigo discute o tema da gestão escolar, aspectos da legislação referente à gestão democrática e práticas de liderança em três escolas em diferentes redes de ensino. Seu objetivo é compreender como a gestão escolar desenvolve práticas de lideranças democrática nas ações propostas pela equipe diretiva. A metodologia é de cunho qualitativo com coleta de dados através de um questionário estruturado, com gestores, professores e pais. Identifica-se que a liderança na gestão escolar se materializa a partir de ações participativas e dialógicas entre gestão, professores e pais, enquanto função prática de cooperação.
Regional Russian Books of Memory as a Form of Preservation and Transfer of Cultural-Historical Memory about the Afghanistan War of 1979-1989
Authors: Rabush Taisiya V.
Published: June 2021

The historical memory of the Soviet military intervention in Afghanistan (1979-1989) is studied through the prism of memory books dedicated to the participants of the war and those who died in it. The present paper is the first study of the Afghan books of memory that were published over the past decades in different regions of Russia. The first part of this paper analyzes the regional books of memory published in various regions of the Russian Federation from 1991 to the present day; the second part analyzes the books of memory published in small cities of Russia as a separate cultural phenomenon. In conclusion, the author describes the main features of regional Afghan books of memory, emphasizing that the memory books are published with the active participation of various regional organizations - from local archives to representatives of municipalities - revealing that the publication of these books is part of cultural policy in the regions. Many memory books have been reprinted, which indicates the continued collection and processing of information about the military casualties in Afghanistan. The regional books of memory are one of the most important forms of preserving and transmitting the historical memory of the Afghanistan war.
Caracterización de bloques multinutricionales con bovinaza enriquecidos con un preparado BAL (bacterias ácido lácticas).
Authors: Rodriguez-Molano Carlos Eduardo
Published: June 2021

Contextualización: Colombia es el cuarto mayor productor de ganado en América Latina, después de Brasil, Argentina y México, con aproximadamente 22,5 millones de cabezas de ganado, convirtiendo a la ganadería una de las actividades más importante en la economía del país, aportando 53% del producto interno pecuario; se ha apreciado un crecimiento de aproximadamente una tercera parte con el fin de producir alimentos que provean una fuente optima de proteína de origen animal y satisfagan las necesidades de los consumidores 

 

Vacío de conocimiento: un problema serio que se presenta en la producción ganadera en Colombia son los altos costos de producción y la baja productividad a nivel de finca lo que ha generando la necesidad de buscar alternativas nutricionales de alta calidad y que sean económicamente rentables para el productor.

 

Propósito del estudio: esta investigación tuvo como propósito evaluar la composición nutricional y microbiológica de bloques multinutricionales elaborados con bovinaza y enriquecidos con un preparado BAL (bacterias ácido lácticas) con un proceso de fermentación, como posible alternativa de suplementación de rumiantes. 

 

Metodología: el preparado microbiano esta basado en un cultivo de bacterias ácido lácticas (BAL) heterofermentativa de mediana y rápida acidificación. En la elaboración de los bloques multinutricionales se empleó, sal mineralizada, excretas bovinas, harina de alfalfa, afrecho de café, harina de maíz, cemento, urea y melaza en diferentes porcentajes de inclusión; adicionalmente, al T2 y T3 se les añadió un preparado microbiano y el T3 tuvo un proceso de fermentación por 48 horas a temperatura ambiente. Las variables evaluadas fueron: Humedad (H), Materia seca (MS), Proteína Cruda (PC), fibra cruda (FC), fibra neutra detergente (FDN), fibra ácida detergente (FDA) y análisis microbiológico, empleándose un diseño de bloques completamente al azar. 

 

Resultados y conclusiones: se presentaron diferencias estadísticas significativas (P≤0,05) entre el T3 y los demás tratamientos en la PC, FC, FDA y FDN obteniendo los mayores valores, se evidenció un comportamiento inversamente proporcional entre la MS y la H para los distintos tratamientos; la concentración de aerobios para el T3 fue de 80 × 102 UFC/g, además de evidenciarse la ausencia de Salmonella en el T2 y T3. La inclusión de un preparado microbiano y la fermentación durante 48h mejora los parámetros nutricionales de los bloques multinutricionales.
Masa simpan tempe dalam pengemas edible film tapioka termodifikasi [Shelf life of tempe wrapped by modified-tapioca edible film]
Authors: Kustyawati Maria Erna , Manalu Dian Santoso , Murhadi Murhadi , Zuidar Ahmad Sapta , Tri Winanti Diki Danar
Published: June 2021

Edible film made up of modified tapioca was used to wrap tempeh and its shelf life estimation was determined. The edible films must be capable of evenly aerating and maintaining moisture without causing condensation in order mycelium to be able to grow and produce high-quality tempeh. The experiment was carried out in completely randomized design with two main factors of storage temperature and time. An accelerated shelf life test at 17oC, 27oC, and 37oC with an Arrhenius model was used to calculate the shelf life, and water content was used as quality parameter indicator. The result showed that modified-tapioca based edible film made from fermentation of tapioca by Saccharomyces cerevisiae was characterized as having elongation of 11.40 %, tensile strength of 408.37 MPa, thickness of 0.88 mm and WVTR of 12.60 g/m2/h. Rate constant of water content decrease in edible film wrapped tempeh based on Arrhenius model was 0.3832 % day-1 and Ea was 10.296 kkal/gmol, while that of in PP-plastic wrapped tempeh was 0.3831% day-1 and Ea was 9.998 kkal/gmol. The shelf life of edible film wrapped tempeh was 9.39 days at 27oC, 5.18 days at 27oC, and 2.96 days at 37oC, while shelf life of PP-plastic wrapped tempeh was 8.64 days at 17oC, 4.85 days at 27 oC, and 2.82 days at 37oC. Therefore, it can be concluded that modified tapioca based edible film increased the shelf life of tempeh.
Study on Cable Stayed Bridge and Its Application in India
Authors: . Shantnu , Singh Dr. Pankaj
Published: June 2021

Bridges are the structures built across any obstacles to connect its two end to allow free movement. Bridges have played a vital and key role in the development of human civilization since thousand of years. Existence of ram setu is an example of presence of bridge technology in ancient time. Bridges are often classified as arch bridge, suspension bridge, Girder Bridge, truss bridge and cable stayed bridge. Advancement in technology has led to development from arch bridge to cable stayed bridge. In present time cable stayed bridge technology are the most favorite and preferable type across the world. Cable stayed bridge construction methodology has various advantages over other types including important one like of being economical and aesthetical appearance. This paper is an attempt to analyze the cable stayed bridge and its various use in India.
A Review on Triple Tube Heat Exchanger on Optimizing Thermal Efficiency
Authors: Suryakant Mr , Vishwakarma Shravan , Mishra Jitendra
Published: June 2021

Over the past few decades, technological developments have faced challenges in meeting cooling needs. Further work is underway on optimal heat transfer in concentric heat exchangers; one of the double tube heat exchangers examined is the triple tube heat exchanger (TTHE). Three-pipe heat exchangers were found to be more efficient than two-pipe heat exchangers. This review presented is the working principle of the triple concentric tube heat exchanger and the proposed methodology is used in a computational fluid dynamics algorithm.
Second Generation Biofuel – An Alternative Clean Fuel
Authors: Patel Shalu , Dixit Savita , Suneja Kavita Gidwani , Tipan Nilesh
Published: June 2021

Renewable energy resources are in high demand to decrease dependence on fossil fuels and mitigate greenhouse gas emissions. Biofuel industries, particularly bioethanol and biodiesel, have been rapidly increasing in tandem with agricultural production over more than a decade. First-generation biofuel manufacturing is heavily reliant on agriculture food sources like maize, sugarcane, sugar beets, soybeans, and canola.  As a result, the intrinsic competitiveness among foods and fuels has been a point of contention in community for the past couple of years. Existing technological advancements in research and innovation have paved the way for the manufacturing of next-generation biofuels from a variety of feedstock’s, including agricultural waste materials, crops remnants and cellulosic biomass from high-yielding trees and bushes varieties.  This report discusses the existing state of second-generation biofuel manufacturing as well as the feedstock utilized in fuel production, biofuel production globally and the current situation in India. This study also explores the current advancements in the findings and advancement of second-generation biofuel extraction from various feedstock’s. The forthcoming directions of agriculture and energy industrial sectors has also been addressed in order to feed the world 's growing population and to fuel the world's most energy-intensive industry, transportation.
Administrative and legal regime of digital profiles
Authors: Kurdyuk Petr Mikhailovich , Ochakovsky Victor Alexandrovich , Pavlov Nikolay Vladimirovich , Chaban Evgeny Alexandrovich , Adygezalova Gyulnaz Eldarovna
Published: June 2021

This article considers a modern information trend, namely the formation of a digital profile in Russia, which gave rise to a scientific discussion about its positive and negative aspects especially during the COVID-19 pandemic. The study puts forward and substantiates a hypothesis that digital profiles are an administrative and legal mode of this special information object. This administrative and legal regime consists of the objectives and principles of functioning and protection of this object, a digital profile as an object of the regime, and tools for the legal support of its functioning, i.e. regulatory rules and administrative procedures for the use and security of this object. Filling these components with legal content will allow forming the regulatory structure of a digital profile belonging to a person and other subjects of public relations.
The social role of Islam in the context of justice
Authors: Ismailov Nurmagomed Omarovich
Published: June 2021

The article examines the social role of Islam as one of the world religions in the context of the concept of justice. The length of the article does not allow a detailed study of all the possible functions of Islam; it is limited to the study of some particular aspects of the functions performed by Islam. The article is aimed at analyzing the social role of Islam in the context of justice. The investigation of the functions performed by Islam in relation to public life and human activity requires its understanding from the point of view of justice. In this case, it is necessary to clearly distinguish between the functions of Islam as a specific religion and the functions of organizations representing Islam. Islam is capable of both strengthening relations in a particular society, helping a person overcome life difficulties, and distracting a person from his pressing problems, directing his energy into an illusory channel.
Energy Expenditures in a High-Voltage Three-Phase AC Superconducting Cable
Authors:   Omsk State Technical University, NOVOZHILOV Timofey A. , NOVOZHILOV Alexander N. ,   Pavlodar State University named after S. Toraigyrov, RAKHIMBERDINOVA Dilara M. ,   Pavlodar State University named after S. Toraigyrov
Published: June 2021

Protection against short circuits between buses tubes in short networks of ore-thermal furnaces is provided by means of electrical insulation. Failure of the insulation leads to an arc, and then to the complete destruction of the expensive bus tube package. Disconnection fault in the elements of a short network cause overheating of undamaged elements. Currently, emergency modes of operation of a short network are determined with indirect signs. It is impossible to use current protection for this purpose because of the existing restrictions on the number of current transformers and the place for their placement. The authors developed a current protection of short networks of ore-thermal furnaces from electrical damage on a single magnetic current transformer. The proposed protection is simple in design, it is able to identify breaks in the elements of a short network and protect them from short circuits. The location of the magnetic current transformer relative to the bus tube package is determined based on the simulation of the magnetic field. The article describes a method for simulating the components of the magnetic field of a bus tube package, which allows us to model them in operational and emergency modes with an error of no more than 10%.
P.N. Yablochkov s Lighting of the Hippodrome at the Bridge of Alma in Paris
Authors:   LLC “Ruselprom, Electric machines”, BORODIN Dmitry A.
Published: June 2021

145 years ago, in 1876, Pavel Nikolaevich Yablochkov received a patent number 112024 for an electric candle. This event turned out to be one of the starting points in the history of electrical engineering and human progress. In a short period of time, the importance of electricity in the life of society has increased many times. The article describes one of Yablochkov's many projects of those years ‒ the electrification of the covered Paris hippodrome, located next to the Alma Bridge. The hippodrome was a place of colorful theatrical performances and the world's first circus-theater, lit on a permanent basis by electricity.
On Computer Memory Saving Methods in Performing Data Classification Using Fully Connected Neural Networks
Authors:   NRU MPEI, Mamontov Andrey I.
Published: June 2021

In solving the classification problem, a fully connected trainable neural network (with adjusting the parameters represented by double-precision real numbers) is used as a mathematical model. After the training is completed, the neural network parameters are rounded and represented as fixed-point numbers (integers). The aim of the study is to reduce the required amount of the computing system memory for storing the obtained integer parameters. To reduce the amount of memory, the following methods for storing integer parameters are developed, which are based on representing the linear polynomials included in a fully connected neural network using compositions of simpler functions: - a method based on representing the considered polynomial as a sum of simpler polynomials; - a method based on separately storing the information about additions and multiplications. In the experiment with the MNIST data set, it took 1.41 MB to store real parameters of a fully connected neural network, 0.7 MB to store integer parameters without using the proposed methods, 0.47 MB in the RAM and 0.3 MB in compressed form on the disk when using the first method, and 0.25 MB on the disk when using the second method. In the experiment with the USPS data set, it took 0.25 MB to store real parameters of a fully connected neural network, 0.1 MB to store integer parameters without using the proposed methods, 0.05 MB in the RAM and approximately the same amount in compressed form on the disk when using the first method, and 0.03 MB on the disk when using the second method. The study results can be applied in using fully connected neural networks to solve various recognition problems under the conditions of limited hardware capacities.
A Regularization Method for Nonlinear Integro-differential Equations with a Zero Operator of the Differential Part and with Several Rapidly Varying Kernels
Authors:   NRU MPEI, Bobodzhanov Abdukhafiz A. , Bobodzhanov Mashkhura A. ,   NRU MPEI, Safonov Valeriy F. ,   NRU MPEI
Published: June 2021

A nonlinear integro-differential equation with a zero operator of the differential part and several rapidly changing kernels is considered. The work is a continuation of the research conducted earlier for a single rapidly changing core. The main ideas of this generalization and the subtleties that arise in the development of the corresponding algorithm for the regularization method are fully visible in the case of two rapidly changing kernels, so for the sake of reducing the calculations, this particular case is taken. A similar problem with a single spectral value of the kernel of an integral operator is analyzed in one of the authors ' papers. In this case, the singularities in the solution of the problem are described only by the spectral value of the kernel. However, the influence of the zero operator of the differential part affects the fact that in the first approximation, the asymptotics of the solution of the problem under consideration will not contain the functions of the boundary layer, and the limit operator itself will become degenerate (but not zero). The conditions for the solvability of the corresponding iterative problems, as in the linear case, will not be in the form of differential equations (as was the case in problems with a non-zero operator of the differential part), but integro-differential equations, and the formation of these equations is significantly influenced by nonlinearity. Note that, in contrast to the linear case, there is no inhomogeneity of the corresponding linear problem in the right part of the problem under study. As it was shown earlier, its presence in the problem would lead to the appearance in the asymptotic solution of terms with negative powers of a small parameter, and in the nonlinear case there would be innumerable such powers, and the corresponding formal asymptotic solution would have the form of a Laurent series. This would make the creation of an algorithm for asymptotic solutions problematic, so in this paper, wanting to remain within the framework of asymptotic solutions of the type of Taylor series, inhomogeneity is excluded. In addition, in the nonlinear case, so-called resonances may occur, which significantly complicate the development of the corresponding algorithm for the regularization method. This publication deals with the non-resonant case. It is assumed that the study of an alternative variant (a more complex resonant problem) will be carried out in the future.
Prospects for Using Renewable Energy Sources in the Republic of Cоte d Ivoire Kouassi Yao Donatien
Authors:   National Research Lobachevsky State University of Nizhni Novgorod, Kouassi Yao Donatien
Published: June 2021

The prospects for development of the power industry in the Republic of Côte d'Ivoire are considered in the context of current global energy development trends. The aim of the article is to analyze the prospects for development of the power industry in Côte d'Ivoire based on alternative energy sources taking into account their available resources and the possibility of using them in the country's economy. The existing energy complex structure is studied; the market shares of foreign companies are identified, and focus is placed on the possibilities of overcoming the energy imbalance in the key sector of the economy through implementing the existing projects of private national investors. Renewable energy sources in Côte d'Ivoire are stable and evenly distributed throughout the country; thus providing a potential for quickly increasing the level of energy availability for the economy. In the author's opinion, the introduction and commercial-scale application of power facilities based on using the solar energy and biomass energy obtained from the waste of traditional industrial production in the region is the most effective, innovative and stabilizing method to be used in the country'’s electric power industry.