bluuebunny/crossref_metadata_2025 huggingface dataset:
Active Barrier Coating for Packaging Paper with Controlled Release of Sunflower Oils
Authors: Samyn Pieter
Published: June 2021

The use of paper as a sustainable packaging material is favored, but it lacks sufficient barrier properties in terms of water repellence and oil resistance. Novel approaches consider active packaging materials or coatings with controlled release providing additional functionality for delivery of specific components to the surface. In this study, the development of a waterborne coating with organic nanoparticles and encapsulated sunflower oils is presented as a system for thermal release of the oil and on-demand tuning of the final barrier properties of the paper substrate. After synthesis of the nanoparticles, it seems that the encapsulation of various grades of sunflower oil (i.e., either poly-unsaturated or mono-unsaturated) strongly affects the encapsulation efficiency and thermal release profiles. The water contact angles are controlled by the oil release and chemical surface composition of the coating upon thermal heating. The oil resistance of the paper improves as a more continuous oil film is formed during thermal release. In particular, the chemical surface composition of the paper coatings is detailed by means of micro-Raman spectroscopy and surface imaging, which provide an analytical quantification tool to evaluate surface coverage, oil delivery, and variations in organic coating moieties.
Three-Dimensionally Ordered Macro/Mesoporous Nb2O5/Nb4N5 Heterostructure as Sulfur Host for High-Performance Lithium/Sulfur Batteries
Authors: Chen Haoxian , Wang Jiayi , Zhao Yan , Zeng Qindan , Zhou Guofu , Jin Mingliang
Published: June 2021

The severe shuttle effect of soluble polysulfides hinders the development of lithium–sulfur batteries. Herein, we develop a three-dimensionally ordered macro/mesoporous (3DOM) Nb2O5/Nb4N5 heterostructure, which combines the strong adsorption of Nb2O5 and remarkable catalysis effect of Nb4N5 by the promotion “adsorption-transformation” mechanism in sulfur reaction. Furthermore, the high electrocatalytic activity of Nb4N5 facilitates ion/mass transfer during the charge/discharge process. As a result, cells with the S-Nb2O5/Nb4N5 electrode delivered outstanding cycling stability and higher discharge capacity than its counterparts. Our work demonstrates a new routine for the multifunctional sulfur host design, which offers great potential for commercial high-performance lithium–sulfur batteries.
Redox and Anti-Inflammatory Properties from Hop Components in Beer-Related to Neuroprotection
Authors: Vazquez-Cervantes Gustavo Ignacio , Ortega Daniela Ramírez , Blanco Ayala Tonali , Pérez de la Cruz Verónica , Esquivel Dinora Fabiola González , Salazar Aleli , Pineda Benjamín
Published: June 2021

Beer is a fermented beverage widely consumed worldwide with high nutritional and biological value due to its bioactive components. It has been described that both alcoholic and non-alcoholic beer have several nutrients derived from their ingredients including vitamins, minerals, proteins, carbohydrates, and antioxidants that make beer a potential functional supplement. Some of these compounds possess redox, anti-inflammatory and anticarcinogenic properties making the benefits of moderate beer consumption an attractive way to improve human health. Specifically, the hop cones used for beer brewing provide essential oils, bitter acids and flavonoids that are potent antioxidants and immune response modulators. This review focuses on the redox and anti-inflammatory properties of hop derivatives and summarizes the current knowledge of their neuroprotective effects.
Free and Total Amino Acids in Human Milk in Relation to Maternal and Infant Characteristics and Infant Health Outcomes: The Ulm SPATZ Health Study
Authors: van Sadelhoff Joris H. J. , Siziba Linda P. , Buchenauer Lisa , Mank Marko , Wiertsema Selma P. , Hogenkamp Astrid , Stahl Bernd , Garssen Johan , Rothenbacher Dietrich , Genuneit Jon
Published: June 2021

Free amino acids (FAAs) are important regulators of key pathways necessary for growth, development, and immunity. Data on FAAs in human milk (HM) and their roles in infant development are limited. We investigated the levels of FAAs and total amino acids (TAA, i.e., the sum of conjugated amino acids and FAAs) in HM in relation to infant and maternal characteristics and immunological conditions. FAA and TAA levels in HM sampled at 6 weeks (n = 671) and 6 months (n = 441) of lactation were determined using high-performance liquid chromatography. Child growth was ascertained at 4–5 weeks and at 6–7 months of age. Child allergy and lower respiratory tract infections were assessed in the first years of life. Associations of amino acid (AA) levels in HM with child growth and health outcomes were determined by Spearman correlation and modified Poisson regression, respectively. Free glutamine, glutamate, and serine in 6-week HM positively correlated with infant weight gain in the first 4–5 weeks of age. Maternal pre-pregnancy weight and body mass index (BMI) were negatively correlated with free glutamine and asparagine in 6-week and 6-month HM and positively correlated with the sum of TAAs in 6-month HM, but significance was lost following confounder adjustment. Free glutamine was lower in 6-month HM of mothers with an allergy (either active or non-active). No consistent associations were found between FAAs in HM and child health outcomes. However, potential negative associations were observed between specific FAAs and the risk of food allergy. These results suggest that specific FAAs play a role in infant growth. Moreover, these findings warrant further investigations into the relation of FAAs in HM with infant health outcomes and maternal allergy.
Severe Pneumonia and Sepsis Caused by Dialister pneumosintes in an Adolescent
Authors: Kaiser Maximilian , Weis Meike , Kehr Katharina , Varnholt Verena , Schroten Horst , Tenenbaum Tobias
Published: June 2021

Background: Dialister pneumosintes (D. pneumosintes) is known to cause dental, periodontal or sinus infections. To date, the pathogen has only been described in a small number of cases with a severe infection. Case report: We describe the clinical case of a 13-year-old, obese female patient that presented with acute respiratory failure and sepsis. A CT-scan showed extensive bilateral patchy areas, subpleural and peribronchovascular consolidations with surrounding ground-glass opacity, extensive consolidations in the lower lobes of both lungs matching to a severe pneumonia and clinically emerging acute respiratory distress syndrome. Moreover, it showed extensive sinusitis of the right sinus frontalis, maxillaris and right cellulae ethmoidales. D. pneumosintes was isolated from an anaerobic blood culture obtained at admission. The antibiotic treatment included piperacillin/tazobactam and oral switch to ampicillin/sulbactam plus ciprofloxacin. Conclusions: We describe the first adolescent with severe systemic D. pneumosintes infection. Since the pathogen is difficult to culture the systemic virulence remains unclear. This work aims to sensitize health care specialists to consider D. pneumosintes infection in patients with periodontal or sinusal infection.
Using Machine Learning Algorithms for Accurate Received Optical Power Prediction of an FSO Link over a Maritime Environment
Authors: Lionis Antonios , Peppas Konstantinos , Nistazakis Hector E. , Tsigopoulos Andreas , Cohn Keith , Zagouras Athanassios
Published: June 2021

The performance prediction of an optical communications link over maritime environments has been extensively researched over the last two decades. The various atmospheric phenomena and turbulence effects have been thoroughly explored, and long-term measurements have allowed for the construction of simple empirical models. The aim of this work is to demonstrate the prediction accuracy of various machine learning (ML) algorithms for a free-space optical communication (FSO) link performance, with respect to real time, non-linear atmospheric conditions. A large data set of received signal strength indicators (RSSI) for a laser communications link has been collected and analyzed against seven local atmospheric parameters (i.e., wind speed, pressure, temperature, humidity, dew point, solar flux and air-sea temperature difference). The k-nearest-neighbors (KNN), tree-based methods-decision trees, random forest and gradient boosting- and artificial neural networks (ANN) have been employed and compared among each other using the root mean square error (RMSE) and the coefficient of determination (R2) of each model as the primary performance indices. The regression analysis revealed an excellent fit for all ML models, indicative of their ability to offer a significant improvement in FSO performance modeling as compared to traditional regression models. The best-performing R2 model found to be the ANN approach (0.94867), while random forests achieved the most optimal RMSE result (7.37).
Influence of GdVO4:Eu3+ Nanocrystals on Growth, Germination, Root Cell Viability and Oxidative Stress of Wheat (Triticum aestivum L.) Seedlings
Authors: Ekner-Grzyb Anna , Chmielowska-Bąk Jagna , Szczeszak Agata
Published: June 2021

The increasing application of lanthanide-doped nanocrystals (LDNCs) entails the risk of a harmful impact on the natural environment. Therefore, in the presented study the influence of gadolinium orthovanadates doped with Eu3+ (GdVO4:Eu3) nanocrystals on wheat (Triticum aestivum L.), chosen as a model plant species, was investigated. The seeds were grown in Petri dishes filled with colloids of LDNCs at the concentrations of 0, 10, 50 and 100 µg/mL. The plants’ growth endpoints (number of roots, roots length, roots mass, hypocotyl length and hypocotyl mass) and germination rate were not significantly changed after the exposure to GdVO4:Eu3+ nanocrystals at all used concentrations. The presence of LDNCs also had no effect on oxidative stress intensity, which was determined on the basis of the amount of lipid peroxidation product (thiobarbituric acid reactive substances; TBARS) in the roots. Similarly, TTC (tetrazolium chloride) assay did not show any differences in cells’ viability. However, root cells of the treated seedlings contained less Evans Blue (EB) when compared to the control. The obtained results, on the one hand, suggest that GdVO4:Eu3+ nanocrystals are safe for plants in the tested concentrations, while on the other hand they indicate that LDNCs may interfere with the functioning of the root cell membrane.
Physical and Mechanical Properties of Sustainable Hydraulic Mortar Based on Marble Slurry with Waste Glass
Authors: Megna Bartolomeo , Badagliacco Dionisio , Sanfilippo Carmelo , Valenza Antonino
Published: June 2021

This paper aims to propose and characterize a sustainable hydraulic mortar entirely obtained by the reuse of waste materials, with marble slurry coming from quarries in the north-western Sicily and glass powder coming from a waste collection plant in Marsala (Province of Trapani). The first was used as raw material to produce the mortar binder by a kilning and slaking process, while the second was used as a pozzolanic additive. The chemical and morphological characterization of the marble slurry was done by XRD, FTIR, STA and SEM analyses. Glass powder was analyzed through particle size distribution measurements, XRD and standard pozzolanic tests. Hydraulic mortars constituted by slaked lime from kilned marble slurry and waste glass powder (LGS) were prepared beside commercial Natural Hydraulic Lime (NHL) based mortars (NGS) and air-hardening lime (LSS)-based mortars. Mechanical and absorption properties of the mortars were investigated as a function of the grain size of the glass powder by means of three-point bending and compressive strength tests, capillary uptake, helium pycnometry and simultaneous thermal analysis. The results demonstrated that the formulation LGS exhibits significantly improved mechanical and absorption properties compared to air-hardening mortars (LSS). It confirms the possibility of producing a more sustainable hydraulic mortar exclusively from waste materials for civil engineering.
A Method for Health Indicator Evaluation for Condition Monitoring of Industrial Robot Gears
Authors: Nentwich Corbinian , Reinhart Gunther
Published: June 2021

Condition monitoring of industrial robots has the potential to decrease downtimes in highly automated production systems. In this context, we propose a new method to evaluate health indicators for this application and suggest a new health indicator (HI) based on vibration data measurements, Short-time Fourier transform and Z-scores. By executing the method, we find that the proposed health indicator can detect varying faults better, has lower temperature sensitivity and works better in instationary velocity regimes compared to several state-of-the-art HIs. A discussion of the validity of the results concludes our contribution.
Ensemble Method of Convolutional Neural Networks with Directed Acyclic Graph Using Dermoscopic Images: Melanoma Detection Application
Authors: Foahom Gouabou Arthur Cartel , Damoiseaux Jean-Luc , Monnier Jilliana , Iguernaissi Rabah , Moudafi Abdellatif , Merad Djamal
Published: June 2021

The early detection of melanoma is the most efficient way to reduce its mortality rate. Dermatologists achieve this task with the help of dermoscopy, a non-invasive tool allowing the visualization of patterns of skin lesions. Computer-aided diagnosis (CAD) systems developed on dermoscopic images are needed to assist dermatologists. These systems rely mainly on multiclass classification approaches. However, the multiclass classification of skin lesions by an automated system remains a challenging task. Decomposing a multiclass problem into a binary problem can reduce the complexity of the initial problem and increase the overall performance. This paper proposes a CAD system to classify dermoscopic images into three diagnosis classes: melanoma, nevi, and seborrheic keratosis. We introduce a novel ensemble scheme of convolutional neural networks (CNNs), inspired by decomposition and ensemble methods, to improve the performance of the CAD system. Unlike conventional ensemble methods, we use a directed acyclic graph to aggregate binary CNNs for the melanoma detection task. On the ISIC 2018 public dataset, our method achieves the best balanced accuracy (76.6%) among multiclass CNNs, an ensemble of multiclass CNNs with classical aggregation methods, and other related works. Our results reveal that the directed acyclic graph is a meaningful approach to develop a reliable and robust automated diagnosis system for the multiclass classification of dermoscopic images.
The Peculiarities of the Acoustic Waves of Zero-Order Focusing in Lithium Niobate Plate
Authors: Kuznetsova Iren , Nedospasov Ilya , Smirnov Andrey , Anisimkin Vladimir , Roshchupkin Dmitry , Signore Maria-Assunta , Francioso Luca , Kondoh Jun , Serebrov Mikhail , Kashin Vadim , Kolesov Vladimir
Published: June 2021

In this research, beam focusing in lithium niobate plate was studied for fundamental anti-symmetric (A0) and symmetric (S0) Lamb waves, and the shear-horizontal (SH0) wave of zero-order. Using the finite element method, appropriate configuration of the interdigital transducer with arc-like electrodes was modeled accounting for the anisotropy of the slowness curves and dispersion of the modes in the plate. Profiles of the focalized acoustic beams generated by the proposed transducer were theoretically analyzed. Based on the result of the analysis, relevant delay lines were fabricated and transfer functions (insertion loss) of the line were measured for SH0 wave in YX-lithium niobate plate. Using an electron scanning microscope, distribution of the electric fields of the same wave were visualized. The results of this study may be useful for hybrid devices and sensors combining nano and acoustoelectronic principles.
GNSS Constraints to Active Tectonic Deformations of the South American Continental Margin in Ecuador
Authors: Tamay José , Galindo-Zaldivar Jesús , Soto John , Gil Antonio J.
Published: June 2021

GNSS observations constitute the main tool to reveal Earth’s crustal deformations in order to improve the identification of geological hazards. The Ecuadorian Andes were formed by Nazca Plate subduction below the Pacific margin of the South American Plate. Active tectonic-related deformation continues to present, and it is constrained by 135 GPS stations of the RENAGE and REGME deployed by the IGM in Ecuador (1995.4–2011.0). They show a regional ENE displacement, increasing towards the N, of the deformed North Andean Sliver in respect to the South American Plate and Inca Sliver relatively stable areas. The heterogeneous displacements towards the NNE of the North Andean Sliver are interpreted as consequences of the coupling of the Carnegie Ridge in the subduction zone. The Dolores–Guayaquil megashear constitutes its southeastern boundary and includes the dextral to normal transfer Pallatanga fault, that develops the Guayaquil Gulf. This fault extends northeastward along the central part of the Cordillera Real, in relay with the reverse dextral Cosanga–Chingual fault and finally followed by the reverse dextral Sub-Andean fault zone. While the Ecuadorian margin and Andes is affected by ENE–WSW shortening, the easternmost Manabí Basin located in between the Cordillera Costanera and the Cordillera Occidental of the Andes, underwent moderate ENE–WSW extension and constitutes an active fore-arc basin of the Nazca plate subduction. The integration of the GPS and seismic data evidences that highest rates of deformation and the highest tectonic hazards in Ecuador are linked: to the subduction zone located in the coastal area; to the Pallatanga transfer fault; and to the Eastern Andes Sub-Andean faults.
Mobile Networks and Internet of Things Infrastructures to Characterize Smart Human Mobility
Authors: Rosa Luís , Silva Fábio , Analide Cesar
Published: June 2021

The evolution of Mobile Networks and Internet of Things (IoT) architectures allows one to rethink the way smart cities infrastructures are designed and managed, and solve a number of problems in terms of human mobility. The territories that adopt the sensoring era can take advantage of this disruptive technology to improve the quality of mobility of their citizens and the rationalization of their resources. However, with this rapid development of smart terminals and infrastructures, as well as the proliferation of diversified applications, even current networks may not be able to completely meet quickly rising human mobility demands. Thus, they are facing many challenges and to cope with these challenges, different standards and projects have been proposed so far. Accordingly, Artificial Intelligence (AI) has been utilized as a new paradigm for the design and optimization of mobile networks with a high level of intelligence. The objective of this work is to identify and discuss the challenges of mobile networks, alongside IoT and AI, to characterize smart human mobility and to discuss some workable solutions to these challenges. Finally, based on this discussion, we propose paths for future smart human mobility researches.
Antidiscrimination Meets Integration Policies: Exploring New Diversity-Related Challenges in Europe
Authors: Magazzini Tina
Published: June 2021

Contemporary European societies are increasingly diverse. Migration both within and to Europe has contributed over the past decades to the rise of new religious, racial, ethnic, social, cultural and economic inequality. Such transformations have raised questions about the (multi-level) governance of diversity in Europe, thus determining new challenges for both scholars and policy-makers. Whilst the debate around diversity stemming from migration has become a major topic in urban studies, political science and sociology in Europe, Critical Race Studies and Intersectionality have become central in US approaches to understanding inequality and social injustice. Among the fields where ‘managing diversity’ has become particularly pressing, methodological issues on how to best approach minorities that suffer from multiple discrimination represent some of the hottest subjects of concern. Stemming from the interest in putting into dialogue the existing American scholarship on CRT and anti-discrimination with the European focus on migrant integration, this paper explores the issue of integration in relation to intersectionality by merging the two frames. In doing so, it provides some observations about the complementarity of a racial justice approach for facing the new diversity-related challenges in European polity. In particular, it illustrates how Critical Race Studies can contribute to the analysis of inequality in Europe while drawing on the integration literature.
A Bayesian Approach to Linking a Survey and a Census via Small Areas
Authors: Nandram Balgobin
Published: June 2021

We predict the finite population proportion of a small area when individual-level data are available from a survey and more extensive household-level (not individual-level) data (covariates but not responses) are available from a census. The census and the survey consist of the same strata and primary sampling units (PSU, or wards) that are matched, but the households are not matched. There are some common covariates at the household level in the survey and the census and these covariates are used to link the households within wards. There are also covariates at the ward level, and the wards are the same in the survey and the census. Using a two-stage procedure, we study the multinomial counts in the sampled households within the wards and a projection method to infer about the non-sampled wards. This is accommodated by a multinomial-Dirichlet–Dirichlet model, a three-stage hierarchical Bayesian model for multinomial counts, as it is necessary to account for heterogeneity among the households. The key theoretical contribution of this paper is to develop a computational algorithm to sample the joint posterior density of the multinomial-Dirichlet–Dirichlet model. Specifically, we obtain samples from the distributions of the proportions for each multinomial cell. The second key contribution is to use two projection procedures (parametric based on the nested error regression model and non-parametric based on iterative re-weighted least squares), on these proportions to link the survey to the census, thereby providing a copy of the census counts. We compare the multinomial-Dirichlet–Dirichlet (heterogeneous) model and the multinomial-Dirichlet (homogeneous) model without household effects via these two projection methods. An example of the second Nepal Living Standards Survey is presented.
Influence of Light Intensity and Photoperiod on the Photoautotrophic Growth and Lipid Content of the Microalgae Verrucodesmus verrucosus in a Photobioreactor
Authors: Vélez-Landa Laura , Hernández-De León Héctor Ricardo , Pérez-Luna Yolanda Del Carmen , Velázquez-Trujillo Sabino , Moreira-Acosta Joel , Berrones-Hernández Roberto , Sánchez-Roque Yazmin
Published: June 2021

Microalgal biomass has the capacity to accumulate relatively large quantities of triacylglycerides (TAG) for the conversion of methyl esters of fatty acids (FAME) which has made microalgae a desirable alternative for the production of biofuels. In the present work Verrucodesmus verrucosus was evaluated under autotrophic growth conditions as a suitable source of oil for biodiesel production. For this purpose BG11 media were evaluated in three different light:dark photoperiods (L:D; 16:08; 12:12; 24:0) and light intensities (1000, 2000 and 3000 Lux) in a photobioreactor with a capacity of three liters; the evaluation of the microalgal biomass was carried out through the cell count with the use of the Neubauer chamber followed by the evaluation of the kinetic growth parameters. So, the lipid accumulation was determined through the lipid extraction with a Soxhlet system. Finally, the fatty acid profile of the total pooled lipids was determined using gas chromatography-mass spectroscopy (GC-MS). The results demonstrate that the best conditions are a photoperiod of 12 light hours and 12 dark hours with BG11 medium in a 3 L tubular photobioreactor with 0.3% CO2, 25 °C and 2000 Lux, allowing a lipid accumulation of 50.42%. Palmitic acid is identified as the most abundant fatty acid at 44.90%.
A 2D Hyperchaotic Map: Amplitude Control, Coexisting Symmetrical Attractors and Circuit Implementation
Authors: Zhou Xuejiao , Li Chunbiao , Lu Xu , Lei Tengfei , Zhao Yibo
Published: June 2021

An absolute value function was introduced for chaos construction, where hyperchaotic oscillation was found with amplitude rescaling. The nonlinear absolute term brings the convenience for amplitude control. Two regimes of amplitude control including total and partial amplitude control are discussed, where the attractor can be rescaled separately by two independent coefficients. Symmetrical pairs of coexisting attractors are captured by corresponding initial conditions. Circuit implementation by the platform STM32 is consistent with the numerical exploration and the theoretical observation. This finding is helpful for promoting discrete map application, where amplitude control is realized in an easy way and coexisting symmetrical sequences with opposite polarity are obtained.
Special Issue “Adenovirus Pathogenesis”
Authors: Arnberg Niklas , Lenman Annasara
Published: June 2021

Adenovirus is a common cause of disease in humans and in animals [...]
Interim Estimates of COVID-19 Vaccine Effectiveness in a Mass Vaccination Setting: Data from an Italian Province
Authors: Flacco Maria Elena , Soldato Graziella , Acuti Martellucci Cecilia , Carota Roberto , Di Luzio Rossano , Caponetti Antonio , Manzoli Lamberto
Published: June 2021

This retrospective cohort study compared the rates of virologically-confirmed SARS-CoV-2 infections, symptomatic or lethal COVID-19 among the residents of the Italian province of Pescara who received one or two doses of COVID-19 vaccines, versus the unvaccinated. The official data of the National Health System were used, and a total of 69,539 vaccinated adults were compared with 175,687 unvaccinated. Among the subjects who received at least one vaccine dose, 85 infections (0.12%), 18 severe and 3 lethal COVID-19 cases were recorded after an average follow-up of 38 days. Among the unvaccinated, the numbers were 6948 (4.00%), 933 (0.53%) and 241 (0.14%), respectively. The serious adverse event reports—yet unconfirmed—were 24 out of 102,394 administered doses. In a Cox model, adjusting for age, gender, and selected comorbidities, the effectiveness of either BNT162b2, ChAdOx1 nCoV-19 or mRNA-1273 vaccines was higher than 95% in preventing infections (mostly due to B.1.1.7 variant), symptomatic or lethal COVID-19. No differences were observed across genders, and among the 691 subjects who received the second dose of vaccine later than the recommended date. Although preliminary, these findings support current immunization policies and may help reducing vaccine hesitancy.
Ebola Virus Glycoprotein Domains Associated with Protective Efficacy
Authors: Bhatia Bharti , Furuyama Wakako , Hoenen Thomas , Feldmann Heinz , Marzi Andrea
Published: June 2021

Ebola virus (EBOV) is the cause of sporadic outbreaks of human hemorrhagic disease in Africa, and the best-characterized virus in the filovirus family. The West African epidemic accelerated the clinical development of vaccines and therapeutics, leading to licensure of vaccines and antibody-based therapeutics for human use in recent years. The most widely used vaccine is based on vesicular stomatitis virus (VSV) expressing the EBOV glycoprotein (GP) (VSV-EBOV). Due to its favorable immune cell targeting, this vaccine has also been used as a base vector for the development of second generation VSV-based vaccines against Influenza, Nipah, and Zika viruses. However, in these situations, it may be beneficial if the immunogenicity against EBOV GP is minimized to induce a better protective immune response against the other foreign immunogen. Here, we analyzed if EBOV GP can be truncated to be less immunogenic, yet still able to drive replication of the vaccine vector. We found that the EBOV GP glycan cap and the mucin-like domain are both dispensable for VSV-EBOV replication. The glycan cap, however, appears critical for mediating a protective immune response against lethal EBOV challenge in mice.
A Veterinary Vaccine for SARS-CoV-2: The First COVID-19 Vaccine for Animals
Authors: Chavda Vivek P , Feehan Jack , Apostolopoulos Vasso
Published: June 2021

As coronaviruses have a wide range of host species, many animals harbor these pathogens, however only a handful of them become severely infected [...]
Composition of peripheral blood leukocytes and immuno-competent bodies of the cross carp “Petrovsky” in different periods of the fishing season
Authors: Suvorova Tatyana Aleksandrovna , Pronina Galina Iozepovna , Mikrjakov Daniel Veniaminovich
Published: June 2021

Crossing is an effective method of increasing agricultural production. In addition to the productive qualities of the resulting crosses, it is important to maintain and enhance their immune resistance. Breeding for immunity to pathogens of various diseases provides a decrease in economic losses and an increase in breeding efficiency. Cross “Petrovsky” (breeding achievement No. 9153820) is a reciprocal hybrid of Anish Mirror and Chuvash scaled productive carp species. It has been established that this cross is superior to the parental forms in terms of growth intensity and survival of juveniles. The work is devoted to a comparative analysis of the leukocyte composition of peripheral blood and immunocompetent organs of the carp cross “Petrovsky” in different periods of the fish-breeding season. The studies were carried out in late May and early October 2019 in the Kirya breeding farm, Chuvashia (2nd fish breeding zone). In fish, peripheral blood was sampled from the tail vein and tissues of the spleen and head kidney. Blood smears and organ-imprinted smears were taken for the study. The preparations were examined under a light microscope and the leukocyte formula was determined. The study of leukograms of immunocompetent organs and tissues of fish helps to judge the functional state and immune resistance of fish. To determine the index of the abundance of leukocytes in a peripheral blood smear, 100 visual fields were examined in different areas. This indicator allows you to record the intensity of leukopoiesis and indirectly assess the level of leukocytes in a unit of blood volume. Studies have established differences in the proportion of certain types of leukocytes and the intensity of leukopoiesis in different periods of the fish-breeding season. Fish tissues and organs differed in the proportion of lymphocytes, monocytes, and neutrophils. The obtained data can be used in carrying out selection and breeding work aimed at increasing productivity and enhancing the resistance of fish to infectious diseases.
On the introduction of macrophytophagous fish into the of Berezovskaya-1 power plant cooling pond
Authors: Zakonnova Ludmila Ivanovna , Nikishkin Igor Vasilievich
Published: June 2021

One of the frequently encountered problems of small cooling ponds at SDPPsis rapid eutrophication and the associatedintensified development of phytoplankton — “hyperblossom” and overgrowth of water bodies with higher aquatic vegetation. As a result of hyperflowering, a huge amount of detritus is deposited on the condenser tubes, reducing the efficiency of the station. The authors analyzed the situation in the cooling pond of Berezovskaya-1 power plant, which was designed with a number of deviations from the “Sanitary rules for the preparation of the reservoir bed and canals for flooding and their sanitary protection”. In this regard, active eutrophication of the reservoir began, which by 2001 reached the stage of “hyper-flowering”. Higher aquatic vegetation has spread in shallow waters and formed “islands” around the peat floating up from the bottom. Among the known measures to combat plant forms, the most environmentally friendly and economically acceptable method of cleaning water bodies with the help of amelioration fish — the silver carp microphytophage and grass carp macrophytophage — is recognized as the most environmentally friendly and economically acceptable. With the undoubted advantage of this method, it has weaknesses, for example, long-term consequences for aboriginal ichthyocenoses in connection with the introduction of competing fish. Due to the fact that, with a sufficient amount of plant feed, grass carp is not a food competitor for the fish and introduced species of the Bereshskoye reservoir and cannot reproduce in the natural environment, it will not reduce the production of local ichthyofauna. Itis recommended to take into account that with a decrease inichthyomass, the infested objectis able to significantly expand the range of food due to benthic and planktonic animals. At the same time, systematic control over the size of the grass carp population should become a mandatory measure, providing for an increase in the commercial catch at the first signs of suppression of aquatic phytocenoses. The authors have calculated the norms of planting material for stocking the cooling pond at Berezovskaya-1 power plant and the fish-breeding indicators that can be obtained 4 years after stocking the cooling pond with grass carp.
Le sanctuaire de Banteay Samrae à Angkor : une fondation bouddhique du règne de Tribhuvanādityavarman
Authors: Roche Louise
Published: June 2021

Le sanctuaire de Banteay Samrae compte parmi les sites majeurs construits dans la plaine d’Angkor au cours du XIIe siècle. Il n’a toutefois pas fait l’objet d’études monographiques qui auraient permis de comprendre la place qu’il occupe dans l’histoire angkorienne. À partir d’un nouvel examen des vestiges, cet article montre que l’édification du temple appartient au troisième quart du XIIe siècle, soit au règne de Tribhuvanādityavarman, et que le dispositif iconographique de la tour centrale suggère un caractère bouddhique, tantrique, pour cette fondation.
Understanding Milk Consumption Habits Among College Students in Order to Redesign Outreach
Authors: Stearns Stacey , Rabinowitz Adam
Published: June 2021

College students consume less dairy milk than in the past. Increased competition in the beverage aisle influences their choices. However, much of the population is not meeting the recommended intake guidelines for calcium. A survey of undergraduate college students with university dining plans focused on milk consumption habits, beverage choices, and student attitudes toward healthful foods and nutrition. Results are guiding Extension program educational outreach campaigns to college students. By focusing on the healthful and nutritional benefits of milk, Extension educators could increase consumption among college age consumers, and their long-term healthful outcomes.
Changes in numbers and distribution of wintering waterbirds around Gotland 1969–2020
Authors: Nilsson Leif , Hermansson Clas
Published: June 2021

The coastal areas of the island of Gotland in the center of the Baltic Sea is an important wintering site for waterbirds in Sweden. Gotland offers extensive areas of shallow feeding grounds and, due to its location, some open waters remain available even during harsh winters. Wintering waterbirds have been counted annually on the island since the start of the International Waterbird Census in 1967, with full coverage of all the inshore areas around the main island obtained during the years 1969–1978 and 2013–2020. Between these two periods, the mean total number of wintering waterbirds increased from 32,000 to 111,500. The most numerous species were Mallard Anas platyrhynchos, Tufted Duck Aythya fuligula, and Common Goldeneye Bucephala clangula. Some species such as Eurasian Wigeon Mareca penelope, Eurasian Teal Anas crecca, and Gadwall Mareca strepera started to winter during the second period. Marked increases were also found for Smew Mergellus albellus and Greater Scaup Aythya marila, likely related to progressively milder winters in recent years.
Analisis Kesesuian antara LKPD dengan Model Pembelajaran
Authors: Permata Indah Dwi , Roza Yenita , Maimunah Maimunah
Published: June 2021

Penelitian dilakukan dengan tujuan untuk menganalisis kesesuaian LKPD dengan model pembelajaran yang digunakan berupa model PBM atau PBL. Pada Penelitian ini pendekatan yang digunakan adalah deskritif kualitatif yang mana di dalamnya menggambarkan kesesuaian LKPD dengan model pembelajaran yang digunakan. Teknik pengambilan data pada penelitian ini adalah dengan menghimpun data-data untuk memperoleh suatu informasi dari subjek penelitian yang di dapat dari beberapa penelitian sebelumnya yakni tiga buah tesis mahasiswa program magister pendidikan matematika universitas Riau. Berdasarkan dari hasil analisis antara LKPD dengan model pembelajaran tersebut di dapat bahwa pada penelitian dengan judul Peningkatan Kemampuan Pemecahan Masalah Matematis dan Self Efficacy Siswa SMA Melalui Penerapan Model Problem Based Learning memiliki kesesuaian antara LKPD dengan model yakni 100% atau telah sesuai antara LKPD dan model. Pada penelitian dengan judul Pengembangan Perangkat Pembelajaran Matematika Menggunakan Model Pembelajaran Berbasis Masalah Untuk Memfasilitasi Kemampuan Pemecahan Masalah Matematis Pada Materi Barisan dan Deret Kelas XI SMA memiliki kesesuaian antara LKPD dengan model yakni 60% atau belum sesuai antara LKPD dengan model. Pada penelitian dengan judul Pengembangan Perangkat Pembelajaran Matematika dengan Penerapan Pembelajaran Berbasis Masalah Untuk Memfasilitasi Kemampuan Pemahaman Matematis Peserta Didik Kelas XI SMA memiliki kesesuaian antara LKPD dengan model yakni 100% atau telah sesuai antara LKPD dan model.
Pengembangan Aplikasi Pembelajaran Aksara Jawa (Ambarawa) Untuk Meningkatkan Hasil Belajar Siswa Sekolah Dasar
Authors: Leo Pradana Hendri , Dewi Koeswanti Henny
Published: June 2021

Penelitian ini bertujuan untuk mengembangkan media pembelajaran berbasis Android yang layak untuk meningkatkan hasil belajar Bahasa Jawa siswa sekolah dasar. Penelitian ini menggunakan model pengembangan ADDIE (Analyse, Design, Develop, Implement, and Evaluate). Teknik pengumpulan data dari penelitian ini terdiri dari observasi, wawancara, dan validasi. Adapun teknik analisis data berupa analisis deskriptif statistik yang diperoleh dari hasil validasi ahli media dan ahli materi. Hasil validitas Aplikasi Pembelajaran Aksara Jawa (AMBARAWA) menunjukkan persentase validitas materi sebesar 88 % dengan kategori sangat tinggi dan persentase validitas media sebesar 90 % juga dengan kategori sangat tinggi. Kesimpulannya, Aplikasi Pembelajaran Aksara Jawa layak digunakan untuk meningkatkan hasil belajar Bahasa Jawa siswa sekolah dasar.
Implikasi Ekstrakurikuler Karate Pada Anak Sekolah Dasar Di Masa Pandemi Covid-19 (Studi Kasus Perguruan Dojo Cakrawala Institut Karate-Do Indonesia)
Authors: Dewi Panca Kumala , Hadi Nur , Gita Purwasih Joan Hesti
Published: June 2021

Pembelajaran dan ekstrakurikuler disekolah belum dapat berjalan secara maksimal, sebab adanya peraturan pembelajaran daring di masa pandemi Covid-19. Penelitian ini bertujuan untuk menganalisis kasus disfungsinya sistem kebijakan pembelajaran daring dimasa pandemi yang berdampak pada orang tua dan siswa serta efektifitasnya  ekstrakurikuler diluar sekolah secara tatap muka untuk menjadikan anak eksis dan sehat secara fisik dan mental. Penelitian ini menggunakan metode penelitian kualitatif dan pendekatan studi kasus yang dilaksanakan di perguruan Dojo Cakrawala INKAI Kota Malang. Dalam penelitian ini responden ada satu sensei atau guru dalam perguruan, tiga orang tua siswa dan tiga siswa yang latihan di dojo cakrawala. Unit analisisnya menggunakan teori fungsionalis AGIL Talcott Parsons. Hasil penelitian menunjukkan bahwa adanya disfungsi antara kebijakan pemerintah mengenai pembelajaran daring yang membuat siswa sekolah dasar mengalami hambatan dalam melakukan aktivitas fisik dalam pembelajaran disekolah. Kegiatan tambahan seperti ekstrakurikuler diluar sekolah dapat sebagai solusi untuk anak belajar memanfaatkan waktu dengan baik sehingga dapat mengoptimalisasikan perkembangan motorik dan dapat mengurangi tingkat kejenuhan anak dalam menghadapi pembelajaran daring.
PEMBERIAN INFUSED WATER ROSELLA (Hibiscus Sabdariffa L.) TERHADAP STABILISASI HEMODINAMIK (MEAN ARTERIAL PRESSURE AND PULSE PRESSURE) PADA PENDERITA HIPERTENSI A LITERATURE RIVIEW
Authors: Hariyono Hariyono
Published: June 2021

Introduction: hypertension was a blood vessel disease and was the most common in the community.  The administration of rosella (Hibiscus sabdariffa l. ) was used as a new way to reduce the risk of heart and blood vessel disease including hypertension, to stabilize mean arterial pressure and pulse pressure in hypertensive patients after infused rosella water and hibiscus sabdariffa l which was linked to the literature empirical published in the last five years.  Researched methods: design: a literature review.  Data sources from comprehensive electronic searched searches conducted on google scholar (2015-2020), PubMed (2015-2020), complementary index (2015-2020), oaister (2015-2020), articles used in this review were published in Bahasa English and Indonesian.  Results: researched in the searched for 10 journals, found that consumption of roselle could reduce systolic blood pressure by an average of 5. 5% while diastolic blood pressure was 4. 0%.  So that changes in mean arterial pressure and pulse pressure were more stable after consuming hibiscus sabdariffa l.  Conclusion: Previous studies had shown that there was an effect of infused water rosella (Hibiscus sabdariffa l. ) on stabilization of mean arterial pressure and pulse pressure in hypertensive patients.
STIGMA DIRI DENGAN HARGA DIRI PADA KELUARGA PENDERITA RETARDASI MENTAL
Authors: Hartatik Hartatik
Published: June 2021

Pendahuluan: Retardasi mental merupakan salah satu kecacatan berupa penyimpangan perkembangan intelektual. Hal ini menimbulkan ketergantungan seumur hidup pada keluarga sebagai Caregivers serta dampak fisik dan psikologis pada individu, keluarga maupun masyarakat. Hal ini menimbulkan harga diri bagi keluarga yang merawatnya. Tujuan: penelitian ini yaitu untuk mengetahui hubungan antara stigma diri dengan harga diri keluarga penderita retardasi mental (PRM). Metode: Penelitian ini menggunakan metode analitik observasional dengan pendekatan cross sectional. Sampel dalam penelitian ini adalah anggota keluarga dari penderira retardasi mental di desa Sidoharjo Kecamatan Jambon Kabupaten Ponorogo Provinsi Jawa Timur Indonesia yang berjumlah 58 orang yang dipilih dengan tehnik purposive sampling. Pengumpulan data menggunakan kuesioner. Data dianalisis melalui analisis univariat dan bivariat menggunakan uji Spearman Rank. Hasil: analisis bivariat hubungan stigma diri dengan harga diri didapatkan nilai p=0.000 dan nilai r=-0.412. Hal ini menunjukkan bahwa ada hubungan antara stigma diri dengan harga diri, semakin tinggi stigma diri maka semakin rendah harga diri penderita retardasi mental. Kesimpulan: terdapat hubungan antara stigma diri dengan harga diri pada keluarga penderita retardasi mental (PRM). Saran: Oleh karena itu disarankan pada keluarga untuk mengurangi stigma diri dan meningkatkan efikasi diri dan dukungan sosial di desa tersebut.
Improving the rheological and fluid loss properties of the water-based mud using wheat flour
Authors: Al Khalaf Hani Ali , Ahmad Zeeshan , Kovácsné Federer Gabriella
Published: June 2021

This study aims to evaluate the effect of wheat flour as a natural and environmentally friendly material on the properties of water-based mud. Recently, many experiments have been conducted with various additives to improve the properties of drilling fluids. The effect of using wheat flour as a new additive to drilling fluid was studied to improve rheological and filtration properties. In the laboratory several samples of water-based mud were prepared, different concentrations of wheat flour from 1 wt% to 7 wt% were added to the mud and tested by using a Fann 35 viscometer, 140 Fann Mud balance, and an API LT-LP filter press. The results showed that adding 7 wt% of wheat flour was the optimal concentration. It was found that the apparent viscosity and yield point increased by 50% and 35%, respectively, when 7 wt% of wheat flour was added to the water-based drilling fluid. Likewise, the fluid loss rate was reduced by 25% when using the same concentration of wheat flour.
DROP OUT PENGOBATAN PADA TUBERKULOSIS MULTIDRUG RESISTANT (TB MDR) DI KOTA SEMARANG
Authors: Amala Akhsanu , Cahyati Widya Hary
Published: June 2021

Angka kesembuhan (Cure Rate) pengobatan TB MDR di Kota Semarang dalam kurun waktu 5 tahun terakhir tidak pernah mencapai target nasional. Di Kota Semarang, terdapat 182 kasus TB MDR dalam kurun tahun 2016-2019. Tujuan penelitian ini adalah untuk mengetahui faktor- faktor yang berhubungan dengan kejadian drop out pengobatan TB MDR di Kota Semarang. Jenis penelitian ini adalah observasional analitik dengan menggunakan rancangan penelitian case control. Teknik pengambilan sampel menggunakan total sampling sebanyak 20 kasus dan 20 kontrol. Instrumen yang digunakan berupa kuesioner terstruktur dan panduan wawancara. Data dianalisis secara univariat, bivariat, dan multivariat menggunakan program SPSS. Hasil menunjukkan bahwa terdapat hubungan antara umur responden (OR= 4,63; 95% CI= 1,02-21,01), dukungan keluarga (OR=6,00; 95% CI= 1,46-24,69), peran PMO (OR=4,33; 95% CI= 1,15-16,32) terhadap kejadian drop out pengobatan Tuberkulosis Multidrug Resistant (TB MDR) di Kota Semarang.
A Novel Distributed and Federated Digital Contact Tracing Systems
Authors: T S Narayanan Hari
Published: June 2021

There are several contact tracing solutions, some are for closed user groups, some are for the residents of a country, and some are open solutions with no clear boundary defined. These independent solutions are not adequate to support pre-pandemic global mobility. Ideally, what is needed is a global solution that can support decentralized control over data and at the same time support proximity data exchange among Apps developed by different vendors and for different countries. This paper proposes a family of contact tracing designs with low-risk anonymity that includes a centralized design, a distributed design, and a federated design for global solution.
Virtual reality as a tool to investigate and predict occupant behaviour in the real world: the example of wayfinding
Authors: Ewart Ian J. , Johnson Harry
Published: June 2021

The use of virtual reality (VR) is expanding within the AEC sectors, commonly in design and pre-construction decision-making, including as a tool to test and predict the behaviours of building occupants. The implicit assumption is the experience of an immersive Virtual Reality Environment is representative of the Real Environment, and understanding this prior to construction reduces the likelihood and significance of design errors. However, there are very few studies that have validated this basic assumption, and even fewer that have made a direct comparison between Virtual and Real building use. One behaviour that influences design is wayfinding, and the acknowledged effect of familiarity with the layout of a building, which is the subject of this study. We produced an accurate immersive VR model of part of an existing University building and asked participating students to complete a wayfinding task in both the Real and VR buildings. The results show a quantitative improvement in the route and time taken to complete the task, but highlight differences in behaviours in each environment, including subtleties of head movement, a tendency to experiment and seek amusement, and a range of responses to the technology from enjoyment to suspicion. Further research is required to explore in more detail the effect of VR technologies on participants’ behaviour, and the limitations and potentials of VR as a decision-making tool beyond the example of wayfinding that we use. In conclusion, we need to adopt a cautious approach when designing by VR and recognise that the results of experiments such as ours should complement design decisions, rather than act as their sole justification.