bluuebunny/crossref_metadata_2025 huggingface dataset:
Validation of “Depression, Anxiety, and Stress Scales” and “Changes in Psychological Distress during COVID-19” among University Students in Malaysia
Authors: Isha Ahmad Shahrul Nizam , Naji Gehad Mohammed Ahmed , Saleem Muhammad Shoaib , Brough Paula , Alazzani Abdulsamad , Ghaleb Ebrahim A. A. , Muneer Amgad , Alzoraiki Mohammed
Published: March 2023

Objectives: This study assessed the reliability and validity of the DASS-21 self-reported measure in the context of COVID-19 on anxiety, stress, and depression. Through this Study, the psychological effect of COVID-19 on anxiety, tension, and depression amongst samples of students enrolled in 201 Malaysian private universities was assessed. Methods: The data were collected from university students through an online survey because of Malaysian Government Movement Control Order (MCO) restrictions. Two separate intervals were used for data collection (i.e., May and September 2020), as this period was associated with the pandemic. For scale validation, convergent, discriminant, and nomological validity criteria were used. Results: The outcome of a CFA model for DASS-21 yielded factor loading that is very significant. Therefore, the measure of the root means square error approximation (RMSEA) and the comparative fit index (CFI) are acceptable values that were produced, demonstrating a good fit for the data. Conclusions: This study was conducted in the Malaysian context to validate depression, anxiety, and stress among university students using the DASS-21 scale. Our findings support the reliability of using DASS-21 in the Malaysian cultural context. Lastly, we testified to the presence of depression, anxiety, and stress among university students through descriptive statistics and provided empirical evidence in this regard. Our results suggested that there was a significant presence of DASS among university students.
A Comparison of Urban Planning in Eastern Asian Capitals during Japanese Colonial Rule: Tokyo, Taipei (1895), Seoul (1910), and Beijing (1936)
Authors: Lee Kilhun , Yang Seungwoo
Published: March 2023

Japan’s urban planning system began with the Urban Renewal (1885) and has been modified since then in various ways through the Tokyo City Improvement Ordinance (1888) and the City Planning Law (1919). From 1895 to 1945 (Japanese colonization era), Japan applied and tested its urban planning in Taipei (1895–1945), Seoul (1910–1945, Gyeongseong), and Beijing (1936–1945). Although Tokyo was the first city discussed for planning, urban renewal was implemented in other colonized cities in a similar period. What Tokyo, Seoul, Beijing, and Taipei have in common is that they are built around fortress walls. Hence, the present study aims to examine the characteristics of Tokyo’s urban planning and reveal how Japan’s urban planning transformed these cities in East Asia, which had different cultures and styles, during Japanese colonial rule. We analyzed urban renewal projects implemented in each city, the organization of a committee to plan the City Planning Ordinance, the effect of urban planning, the characteristics of urban planning, and changes in existing downtowns.
Experimental Study of Dynamic Responses of Special Tunnel Sections under Near-Fault Ground Motion
Authors: Tang Yong , Zheng Yong , Li Lin , Xian Liping , Guo Deping
Published: March 2023

Data surveys show that near-fault ground motion does great damage to tunnel structures, especially the portal section and fault zone. In this paper, a series of shaking table model tests of near-fault tunnels were conducted and the surrounding-rock fault-zone-lining model of the near-fault tunnel was established. Accelerometers and strain gauges were arranged at specific locations, and the experimental process of earthquake occurrence was simulated by inputting seismic waves of different working conditions, which obtained the characteristics of stress, damage and deformation of the tunnel model. The tested results showed that the acceleration response of the tunnel portal section was close to the wave shape of the inputted seismic wave, and the acceleration response of the arch shoulder, arch waist and arch foot was more prominent. The internal force of lining at the arch shoulder and arch foot was greater than that at the arch crown, and the peak internal force appeared at the arch foot. The internal force and the maximum or minimum principal stress of the lining under impulse ground motion were larger than those under non-impulse ground motion. Additionally, the surrounding rock had a filtering effect on the high-frequency band of seismic waves. Meanwhile, when the geological characteristics of the fault zone were poor, and the tensile damage first appeared at the arch foot, the compressive damage appeared at the junction of the surrounding rock and fault zone. This study will offer a practical guidance for tunnel engineering earthquake damage.
Selection for Sustainable Preservation through In Vitro Propagation of Mature Pyrus spinosa Genotypes Rich in Total Phenolics and Antioxidants
Authors: Alexandri Styliani , Tsaktsira Maria , Hatzilazarou Stefanos , Kostas Stefanos , Nianiou-Obeidat Irini , Economou Athanasios , Scaltsoyiannes Apostolos , Tsoulpha Parthena
Published: March 2023

Pyrus spinosa Forssk. (almond-leaved pear) is a wild-growing native tree of the hilly countryside of Greece, which has recently gained interest for its valuable endogenous substances. In the present work, the determination of the total phenol content (TPC) and antioxidant capacity (AC) was carried out during 2021 and 2022 in leaves from 32 genotypes of mature wild-growing trees at four different locations of Central Macedonia District, Greece: Agia Anastasia, Chalkidiki, Lagadas and Pieria. The measurements taken from the leaf samples of all genotypes revealed a strong positive linear correlation between TPC and AC (R2 = 0.772). Two genotypes from Agia Anastasia, coded as AA2 and AA3, were comparatively the richest in TPC (44.86 for AA2 and 46.32 mg GAE/g fresh weight for AA3) and AC (70.31 and 71.21 μg AAE/g fresh weight for the same genotypes). For these two genotypes of high TPC and AC, an efficient micropropagation protocol was developed to preserve and multiply this valuable germplasm. Newly emerged shoot tips were excised from winter shoots and, after disinfestation, they were established on a modified Murashige and Skoog (MS) nutrient medium with 5 μΜ of 6-Benzyloaminopurine (BAP). For shoot multiplication, explants from clean cultures were transferred to Pear Medium 1 with 5 μΜ of BAP. The effect of the nutrient medium was tested by using five different nutrient media (modified MS, Pear Medium 1, Pear Medium 2, DKW and WPM) supplemented with 5 μΜ of BAP. Pear Medium 1 was the most effective in shoot formation. Among the four different BAP concentrations (0, 5, 10 and 20 μΜ) used in Pear Medium 1, 5 μΜ of BAP resulted in the production of the significantly highest number of shoots (22.7 shoots per explant, 2.4 cm long). The exposure of cultures to 10 μmol·m−2·s−1 for one week under light irradiance followed by 35 μmol·m−2·s−1 for four weeks increased both the number and length of the shoots produced. A 20-s dip of the shoot bases into 49.0 μΜ of Indole-3-butyric acid (IBA) in EtOH equally affected rooting in a modified rooting MS (79%) and Pear Medium 1 (80%). The root system developed better in the modified rooting MS medium (mean number of roots of 2.7 with a length of 3.9 cm). The acclimatization of the plantlets was successfully carried out (high survival rates five weeks after their establishment) on a perlite substrate under controlled environmental conditions.
Research on Salt Stress in Rice from 2000 to 2021: A Bibliometric Analysis
Authors: Zhang Rui , Hussain Shahid , Yang Shuo , Yang Yulin , Shi Linlin , Chen Yinglong , Wei Huanhe , Xu Ke , Dai Qigen
Published: March 2023

This study aimed to assess global trends in research on salt stress in rice and provide new directions for future studies. The subjects in this study are a plain text file with full records and cited references (Web of Science core collection as the database, “rice” and “salt” as the retrieved title with the date range from 1 January 2000 to 31 December 2021). The bibliometric method was used in this study, and the results were visualized using Scimago Graphica, VOSviewer, and CiteSpace. The results showed that China, India, and Japan contributed most of the literature in this field, and the institutes with the largest academic output were the Chinese Academy of Science, the International Rice Research Institute, and Nanjing Agriculture University. This study argues that research on salt stress in rice has been conducted in three main areas: phenotypes, response mechanisms, and remediation strategies. Inoculation of rhizosphere bacteria, ion homeostasis, soil remediation, and gene editing will be popular topics in rice salt stress research in the future. This study aimed to provide a potential theoretical direction for research on salt stress in rice as well as a reference for feasible studies on the exploitation of saline–alkali lands.
Research on Biomass Waste Utilization Based on Pollution Reduction and Carbon Sequestration
Authors: Sun Wanghu , Sun Yuning , Hong Xiaochun , Zhang Yuan , Liu Chen
Published: March 2023

Biomass waste in agricultural and forestry production has low value, large volume, disordered texture, high water content, and high recycling costs, disturbing its biomass waste treatment. In terms of mainstream treatment methods, incineration directly releases carbon dioxide, dust, and other pollutants, while landfills produce carbon dioxide and methane with stronger greenhouse effects. In response to this problem—taking pollution reduction, carbon sequestration, and the resource utilization of biomass waste as the purpose—a mode of in-situ, harmlessness, homogenization, reduction, automation, inorganic transformation, resource utilization, and carbon sequestration is proposed, which reduces recycling costs and improves economic efficiency and operability with carbonization as the key technique. The carbonization mechanism of biomass waste was first investigated using TGA analysis to obtain the key technical parameters of in-situ carbonization, and then biomass carbonization was divided into two stages: in-situ carbonization and factory carbonization. Thus, a process is constructed for in-situ crushing, carbonization, screening, and recycling, which promotes the recovery efficiency of biomass waste, including domestic waste. Moreover, on the basis of massive experiments, a carbon-based material was invented where, through wide applications in architecture, huge carbon can be stored in building materials; thus, a novel method of biomass waste resource utilization, carbon sequestration, and artificial carbon pool construction was established. Among them, with the convenient collection of biomass waste as the premise, the economic and reasonable carbonization process is a pivotal step to guarantee the wide application of carbon-based materials, and pollution reduction and carbon sequestration are the final purposes. This novel mode is conducive to saving resources and realizing carbon peaking and carbon neutrality goals with significant economic, ecological, and social benefits. The novelty lies in five aspects. Firstly, differing from current research on pollution reduction, carbon reduction, and carbon balance, further research on carbon sequestration was proposed. Secondly, the feasibility of reducing re-emission through carbon transfer was demonstrated. Thirdly, in-situ carbonization to recycle biomass waste was constructed. Fourthly, through carbonization, the inorganic transformation of biomass waste avoided carbon re-emission, especially methane emissions. Last but not the least, carbonization products achieved carbon sequestration and constructed an artificial carbon pool.
Proposal for Implementation of Extraction Mechanism of Raw Materials during Landfill Mining and Its Application in Alternative Fuel Production
Authors: Pitak Inna , Denafas Gintaras , Baltušnikas Arūnas , Praspaliauskas Marius , Lukošiūtė Stasė-Irena
Published: March 2023

New approaches to waste management and the demands of the circular economy have changed the management of landfills. Over time, the decomposition of buried waste primarily determines the amount of recyclable and combustible materials. This pilot study attempted to assess the feasibility of extracting and recovering energy-intensive raw materials from landfills by developing a waste extraction mechanism and creating a solid recovered fuel (SRF) production line for use as a replacement fuel in the cement industry. The proposed mechanism consisted of two stages. The first stage was recommended to be carried out on the landfill territory by screening out the fine fraction and extracting inert materials and bulky waste. The second stage should be on the mechanical biological treatment (MBT) plant’s territory by adding additional technological equipment to the MBT line. The productivity of the SRF production line was calculated and was 4.9 t/h. The mechanism proposed in the work was tested at the operating test site in Lithuania. The composition of Landfill Mined Residues (LMRs) was studied, and the energy potential of the studied part of the landfill was calculated, which was 196,700 GJ. It has been found that the SRF produced complies with the European Union (EU) standard and, according to its classification characteristics, belongs to class III and can be used as a replacement fuel in the clinker firing process. An environmental and economic efficiency assessment was conducted using SRF in the cement kiln. The calculation result showed that using 10% SRF as a replacement fuel for coal used in clinker firing at 2.51 t/h would save 1274 USD/h in coal costs. This use of SRF will emit 3.64 t/h CO2 and achieve a net savings of 1355 USD/h. The mechanism proposed in this work aimed at reducing waste in landfills by converting materials into energy resources will help achieve the circular economy’s goals.
Classification of Blood Rheological Models through an Idealized Symmetrical Bifurcation
Authors: Tzirakis Konstantinos , Kamarianakis Yiannis , Kontopodis Nikolaos , Ioannou Christos V.
Published: March 2023

The assumed rheological behavior of blood influences the hemodynamic characteristics of numerical blood flow simulations. Until now, alternative rheological specifications have been utilized, with uncertain implications for the results obtained. This work aims to group sixteen blood rheological models in homogeneous clusters, by exploiting data generated from numerical simulations on an idealized symmetrical arterial bifurcation. Blood flow is assumed to be pulsatile and is simulated using a commercial finite volume solver. An appropriate mesh convergence study is performed, and all results are collected at three different time instants throughout the cardiac cycle: at peak systole, early diastole, and late diastole. Six hemodynamic variables are computed: the time average wall shear stress, oscillatory shear index, relative residence time, global and local non-Newtonian importance factor, and non-Newtonian effect factor. The resulting data are analyzed using hierarchical agglomerative clustering algorithms, which constitute typical unsupervised classification methods. Interestingly, the rheological models can be partitioned into three homogeneous groups, whereas three specifications appear as outliers which do not belong in any partition. Our findings suggest that models which are defined in a similar manner from a mathematical perspective may behave substantially differently in terms of the data they produce. On the other hand, models characterized by different mathematical formulations may belong to the same statistical group (cluster) and can thus be considered interchangeably.
Multi-Agent Optimal Control for Central Chiller Plants Using Reinforcement Learning and Game Theory
Authors: Qiu Shunian , Li Zhenhai , Pang Zhihong , Li Zhengwei , Tao Yinying
Published: March 2023

To conserve building energy, optimal operation of a building’s energy systems, especially heating, ventilation and air-conditioning (HVAC) systems, is important. This study focuses on the optimization of the central chiller plant, which accounts for a large portion of the HVAC system’s energy consumption. Classic optimal control methods for central chiller plants are mostly based on system performance models which takes much effort and cost to establish. In addition, inevitable model error could cause control risk to the applied system. To mitigate the model dependency of HVAC optimal control, reinforcement learning (RL) algorithms have been drawing attention in the HVAC control domain due to its model-free feature. Currently, the RL-based optimization of central chiller plants faces several challenges: (1) existing model-free control methods based on RL typically adopt single-agent scheme, which brings high training cost and long training period when optimizing multiple controllable variables for large-scaled systems; (2) multi-agent scheme could overcome the former problem, but it also requires a proper coordination mechanism to harmonize the potential conflicts among all involved RL agents; (3) previous agent coordination frameworks (identified by distributed control or decentralized control) are mainly designed for model-based control methods instead of model-free controllers. To tackle the problems above, this article proposes a multi-agent, model-free optimal control approach for central chiller plants. This approach utilizes game theory and the RL algorithm SARSA for agent coordination and learning, respectively. A data-driven system model is set up using measured field data of a real HVAC system for simulation. The simulation case study results suggest that the energy saving performance (both short- and long-term) of the proposed approach (over 10% in a cooling season compared to the rule-based baseline controller) is close to the classic multi-agent reinforcement learning (MARL) algorithm WoLF-PHC; moreover, the proposed approach’s nature of few pending parameters makes it more feasible and robust for engineering practices than the WoLF-PHC algorithm.
Progress on the Link between Nutrient Availability and Toxin Production by Ostreopsis cf. ovata: Field and Laboratory Experiments
Authors: Medina-Pérez Noemí Inmaculada , Cerdán-García Elena , Rubió Francesc , Viure Laia , Estrada Marta , Moyano Encarnación , Berdalet Elisa
Published: March 2023

This study aimed to improve the understanding of the nutrient modulation of Ostreopsis cf. ovata toxin content. During the 2018 natural bloom in the NW Mediterranean, the total toxin content (up to ca. 57.6 ± 7.0 pg toxin cell−1) varied markedly. The highest values often coincided with elevated O. cf. ovata cell abundance and with low inorganic nutrient concentrations. The first culture experiment with a strain isolated from that bloom showed that cell toxin content was higher in the stationary than in the exponential phase of the cultures; phosphate- and nitrate-deficient cells exhibited similar cell toxin variability patterns. The second experiment with different conditions of nitrogen concentration and source (nitrate, urea, ammonium, and fertilizer) presented the highest cellular toxin content in the high-nitrogen cultures; among these, urea induced a significantly lower cellular toxin content than the other nutrient sources. Under both high- and low-nitrogen concentrations, cell toxin content was also higher in the stationary than in the exponential phase. The toxin profile of the field and cultured cells included ovatoxin (OVTX) analogues -a to -g and isobaric PLTX (isoPLTX). OVTX-a and -b were dominant while OVTX-f, -g, and isoPLTX contributed less than 1-2%. Overall, the data suggest that although nutrients determine the intensity of the O. cf. ovata bloom, the relationship of major nutrient concentrations, sources and stoichiometry with cellular toxin production is not straightforward.
Clinical Implications for the Comprehensive Interpretation of Radiologic and Immunodiagnostic Tests in Patients Suspected of Parasitic Hepatic Cyst, a Rare Case in Korea
Authors: Yoo Jae-Sung , Kang Min-Kyu , Park Jung-Gil , Kim Hyung-Joo , Choi Joon-Hyuk
Published: March 2023

Cystic echinococcosis (CE) is a representative neglected tropical disease (NTD) with increased morbidity and mortality but is ignored and overlooked in developed countries. Serological and radiographic findings are helpful in distinguishing these parasites; however, conflicting results of these can make it difficult to diagnose if medical knowledge of hepatic parasitic disease, including the etiology, features of imaging, and immunodiagnostic test, is not acquired. We report the case of a male patient with dyspepsia and right epigastric pain who had positive results for cysticercosis antibodies on immunodiagnostic examination. Abdominal ultrasonography revealed two huge communicating cystic lesions measuring 8–11 cm. Further evaluations for cysticercosis of the brain (neurocysticercosis) and eyes (intraocular cysticercosis) were unremarkable throughout the brain imaging test and fundus examination. A laparoscopic right hemi-hepatectomy was performed for diagnosis and treatment. On histopathological examination, diverse stages of Echinococcus granulosus were identified. Albendazole was administered postoperatively, and the patient was also followed up. We should be aware of the etiologies that have been prevalent in parasite infection thought to be the cause of hepatic cysts. Moreover, we make an effort to ascertain the patient’s nationality, past travel experiences, and immediate environment, including any animals and pets. We present the case of a patient who was worried about the possibility of liver invasion of cysticercus due to the positivity of the cysticercosis antibody and was ultimately diagnosed with CE.
Strong Deflection Gravitational Lensing for the Photons Coupled to the Weyl Tensor in a Conformal Gravity Black Hole
Authors: Abbas Ghulam , Övgün Ali , Mahmood Asif , Zubair Muhammad
Published: March 2023

In the present paper, strong deflection gravitational lensing is studied in a conformal gravity black hole. With the help of geometric optics limits, we have formulated the light cone conditions for the photons coupled to the Weyl tensor in a conformal gravity black hole. It is explicitly found that strong deflection gravitational lensing depends on the coupling with the Weyl tensor, the polarization directions, and the black hole configuration parameters. We have applied the results of the strong deflection gravitational lensing to the supermassive black holes SgrA* and M87* and studied the possibility of encountering quantum improvement. It is not practicable to recognize similar black holes through the strong deflection gravitational lensing observables in the near future, except for the possible size of the black hole’s shadow. We also notice that by directly adopting the constraint of the measured shadow of M87*, the quantum effect demands immense care.
Geochemical Features of River Runoff and Their Effect on the State of the Aquatic Environment of Lake Onego
Authors: Kulik Natalia , Efremenko Natalia , Strakhovenko Vera , Belkina Natalia , Borodulina Galina , Gatalskaya Ekaterina , Malov Viktor , Tokarev Igor
Published: March 2023

This paper presents the results of seasonal observations of the geochemical composition of the waters of the large tributaries of Lake Onego. The mineralogy and geochemistry of the suspended matter and the isotopic composition (oxygen-18 and deuterium) of the river waters were studied for the first time. The dependence of the chemical and isotopic compositions of the tributary water on the season and characteristics of the catchment area (swampiness and lacustrine) was revealed. It is shown that the river waters belong to the bicarbonate class of the calcium group and have low mineralization, high color and a similar composition to the main minerals of the suspended matter. It is determined that the difference between the multielement spectra of the water and suspended matter of the different rivers is closely related to the geological and geomorphological structures of river basins. It is established that the quantitative characteristics of the mineral and organic parts of the suspended matter, the ratios of the different minerals andthe size and patterning of the particles of detrital material in the tributaries differ. The change in the mineralogical and geochemical compositions of the suspended matter of each individual river over the year is insignificant. The influence of the river runoff on the formation of lake waters is manifested in the chemical composition of the lake waters. The quantitative ratios of the main ions, biogenic elements and microcomponents in lake water mainly correspond to their ratios in river waters. The mineral part of the dispersed sedimentary matter of the lake in its geochemical characteristics is close to the suspended matter of the river waters.
Mapping of Groundwater, Flood, and Drought Potential Zones in Neom, Saudi Arabia, Using GIS and Remote Sensing Techniques
Authors: Alharbi Talal
Published: March 2023

Neom is expected to face climate and environmental challenges, including the provision of water and the mitigation of flood and drought risks. The field data for identifying the potential risk zones are limited. I utilized remote sensing data and geographic information system (GIS) techniques to identify such zones. The datasets used here included drainage density, lineament density, precipitation, elevation, lithology, slope, soil, and land use/land cover. These data were analyzed using a weighted overlay analysis in a GIS environment. The analysis successfully mapped the potential groundwater, flood, and drought zones in Neom. The zone with a good potential for groundwater covered 515 km2 of Neom, whereas 11,562, 10,616, and 289 km2 of land had a moderate, poor, and very poor chance of having groundwater, respectively. The area with the lowest flood danger covered only 195 km2, whereas the areas with a low, moderate, and high flooding risk covered 4355, 13,542, and 4910 km2 of land, respectively. The results of the overlay analysis showed that low and very low drought risks were associated with 4322 and 44 km2 of land, respectively. In turn, 10,615 and 8266 km2 of the region were at a moderate and high drought risk, respectively.
A Case Study: Groundwater Level Forecasting of the Gyorae Area in Actual Practice on Jeju Island Using Deep-Learning Technique
Authors: Kim Deokhwan , Jang Cheolhee , Choi Jeonghyeon , Kwak Jaewon
Published: March 2023

As a significant portion of the available water resources in volcanic terrains such as Jeju Island are dependent on groundwater, reliable groundwater level forecasting is one of the important tasks for efficient water resource management. This study aims to propose deep-learning-based methods for groundwater level forecasting that can be utilized in actual management works and to assess their applicability. The study suggests practical forecasting methodologies through the Gyorae area of Jeju Island, where the groundwater level is highly volatile and unpredictable. To this end, the groundwater level data of the JH Gyorae-1 point and a total of 12 kinds of daily hydro-meteorological data from 2012 to 2021 were collected. Subsequently, five factors (i.e., mean wind speed, sun hours, evaporation, minimum temperature, and daily precipitation) were selected as hydro-meteorological data for groundwater level forecasting through cross-wavelet analysis between the collected hydro-meteorological data and groundwater level data. The study simulated the groundwater level of the JH Gyorae-1 point using the long short-term memory (LSTM) model, a representative deep-learning technique, with the selected data to show that the methodology is adequately applicable. In addition, for its better utilization in actual practice, the study suggests and analyzes (i) a derivatives-based groundwater level learning model which is defined as derivatives-based learning to forecast derivatives (gradients) of the groundwater level, not the target groundwater time series itself, and (ⅱ) an ensemble forecasting methodology in which groundwater level forecasting is performed repetitively with short time intervals.
Meat productivity of broiler chickens when feeding an enzyme drug
Authors:   Federal State Budgetary Educational Institution of Higher Education “Nizhny Novgorod State Agricultural Academy”, Russia, Nizhny Novgorod, Vorobyova N. V. , Mosin A. M. ,   Federal State Budgetary Educational Institution of Higher Education “Nizhny Novgorod State Agricultural Academy”, Russia, Nizhny Novgorod
Published: March 2023

The purpose of the work was to study the meat productivity of broiler chickens of the cross Ross PM3 when feeding the enzyme drug VP-1. The work was carried out on the basis of the poultry farm of JSC “Lindovskaya poultry farm-breeding plant”. The control group of broiler chickens were fed with complete compound feed without additives. The poultry of the 1st experimental group received an enzyme additive in the amount of 0,4 kg/t of feed, the 2nd group received it 0,5 kg/t of feed, the 3rd group received it in the amount of 0,6 kg/t of feed. The enzyme additive was incorporated by stepwise mixing. The broiler chickens of the control group were characterized by a fairly high growth rate, which by the age of 38 days had a live weight of 2082,29 g. At the same time, the broiler chickens of the 1st experimental group had slightly better indicators. So, by the age of 38 days their average live weight was 232,42 g higher than their herdmates from the control group (P ≥ 0,999). The broiler chickens of the 2nd experimental group had the average live weight of 2271,72 g, which was by 189,43 g or 9,10 % (P ≥ 0,999) higher than in the control group. The maximum live weight for 38 days of rearing was gained by broiler chickens of the 3rd experimental group 2352,92 g, which exceeded broiler chickens of the 1st experimental group by 38,21 g or 1,65 %, as well as the live weight of chickens of the 2nd experimental group by 81,20 g or 3,57 %. The maximum positive dynamics of live weight was shown by broiler chickens of the 3rd experimental group, and the minimum was shown by chickens of the control group. Chickens of the 1st experimental group and the 2nd experimental group showed the dynamics of live weight gain significantly exceeding the growth rate of live weight of broilers of the control group.
Characteristics of the preservative effect of various biological drugs in the preparation of feed from perennial legumes
Authors:   Federal Williams Research Center of Forage Production & Agroecology, Russia, Moscow region, Lobnya, Klimenko V. P. , Malyarenko S. A. ,   Federal Williams Research Center of Forage Production & Agroecology, Russia, Moscow region, Lobnya
Published: March 2023

In many regions of our country, silage and haylage from herbs in the rations of cattle occupy more than 50 % in nutritional value. They are characterized by an optimal concentration of dry matter, crude protein and energy. These feeds are well eaten and digested by animals and have a long storage life, which allows them to be used throughout the year. Alfalfa, meadow clover and other perennial legumes have a high nutritional value when harvesting in the early phases of vegetation, the content of crude protein in which reaches 18,4-26,7 %, and the metabolic energy exceeds 10,4 MJ in the dry matter of the herbage. The purpose of the research was to compare the eff ectiveness of biological drugs used in silage and haylage making of the main types of high-protein legumes and grass mixtures based on them, to identify the most promising in terms of preserving effect, effect on feed digestibility and animal productivity. Comparative tests have been carried out to assess the effectiveness of using a number of modern biological products for canning diff erent types of unsilable and diffi cult silable legumes. Experimental data have been obtained on the eff ect on the safety, quality, digestibility and productive eff ect of the obtained feed when fed in the rations of highly productive lactating cows. The preservative eff ect of a new domestic enzyme-bacterial drug in the silage of perennial legumes has been studied, the optimal dose of application and conditions for eff ective use have been established. In order to increase the volume and increase the profitability of milk production, it is advisable to include in the rations of lactating cows silage prepared from air-dried alfalfa with the addition of a domestic biological drug Biotrof-111 in the dose recommended by the manufacturer.
La orientación emprendedora como fuente de innovación para las empresas: un análisis aplicado
Authors: Sánchez-García Eduardo , Marco-Lajara Bartolomé , Martínez-Falcó Javier
Published: March 2023

El entorno actual fuerza a las empresas a realizar esfuerzos constantes en innovación, al ser un factor clave para su competitividad en los mercados. Debido a su importancia, en los últimos años el estudio de las principales fuentes de innovación empresarial ha adquirido gran relevancia, si bien todavía existe cierta ambigüedad en relación con los principales factores que afectan a la generación y desarrollo de innovaciones. El principal objetivo de esta investigación es analizar la relación existente entre la orientación emprendedora de las empresas y su capacidad de innovación, así como el posible efecto mediador del capital social y la capacidad de absorción en esta relación. Para ello, se realiza un análisis empírico sobre una muestra de 197 empresas españolas del sector de suministro de energía eléctrica. Para realizar el análisis estadístico, se ha utilizado la técnica de modelización de ecuaciones estructurales basadas en la varianza (PLS-SEM) y, particularmente, el software “SmartPLS” en su versión 3.9. Los resultados desvelan que la orientación emprendedora de las empresas afecta de forma positiva y significativa a su capacidad para innovar. Además, el capital social y la capacidad de absorción se establecen como variables mediadoras en esta relación. Se concluye que las empresas pueden impulsar su capacidad de innovación favoreciendo el desarrollo de un clima emprendedor en la empresa, incentivando la participación de todos los miembros de la empresa en la identificación y explotación de oportunidades de negocio. Este clima puede favorecer el desarrollo de amplias redes de contactos valiosos, y la capacidad de absorción de nuevo conocimiento de la empresa lo cual, en última instancia, permitiría incrementar su capacidad de innovación.
El no egreso y las monografias finales de grado. El estudio de caso de seis licenciaturas de la facultad de humanidades y ciencias de la educación
Authors: Esteva Gabriela
Published: March 2023

Con el propósito de favorecer el aumento del número y la calidad de la formación de los estudiantes, el decanato de la Facultad de Humanidades y Ciencias de la Educación (FHCE) de la Universidad de la República de Uruguay (UdelaR) se presentó en 2011 ante la Comisión Sectorial de Enseñanza (CSE) para el financiamiento de un proyecto de investigación-intervención cuya población objetivo es 873 estudiantes avanzados (Serna, (coord) 2005) y en situación de rezago [1]y con al menos 3 años sin registrar actividad académica en la licenciatura.  El presente trabajo tiene como finalidad presentar parte de los resultados de la primera aproximación diagnóstica a las dimensiones académicas percibidas por los estudiantes influyentes en el rezago en la elaboración de monografías. Para el diagnóstico situacional hemos adaptado la tipología de abandono según el momento de la carrera al fenómeno del rezago (Tinto, 1989; Diconca, 2012) y algunos dimensiones influyentes del estilo formativo construidos en base a los aportes de algunos autores de la literatura revisada sobre la universidad de masas (Tinto, 1989; Gimeno Sacristán, 1994, Fernández, 1994, 2013,  Arocena, Sutz, 2001, Dubet, 2005)  A nivel del diseño metodológico optamos por un estudio de tipo mixto. Los resultados mostraron que en el periodo 1996-2009 la reproducción de las tendencias de débil integración o exclusión a nivel de las seis licenciaturas de la FHCE a pesar de la democratización en el acceso observadas en el continente y de la Universidad de la República de Uruguay entre 2000-2008 (Ezcurrra, 2011; Brunner, 2011) y a nivel nacional (Bentancur, 2004; Ministerio de Educación y Cultura, 2009, 2010). A nivel micro-individual los resultados del estudio mostraron que falta de normas claras sobre lo que es un buen trabajo monográfico, las exigencias desmedidas para el nivel de grado, la cantidad de trabajos monográficos, la falta de orientación docente durante el proceso de elaboración, la falta de autonomía de los estudiantes en la delimitación del tema son percibidas por los estudiantes un obstáculo para finalizar el trabajo afectando mucho al rezago y por tanto al egreso. 

Preferimos utilizar el término de rezago al de abandono de una carrera por la importancia de la perspectiva estudiantil en la definición de su situación académica en la carrera, en la línea de razonamiento de Tinto. (1989) En segundo lugar en  la UdelaR los estudiantes no pierden su calidad  de tal hasta solicitar el egreso. Son considerados inactivos cuando no registran actividad académica en los últimos dos años, recuperando su calidad de activo una vez registran actividad. Por ultimo desde la perspectiva e este trabajo no registrar actividad académica en la escolaridad no significa no tenerla como lo es en el caso de elaboración de monografías o tesinas de grado.
A questão palestina entre multilateralismos distintos na política externa brasileira: uma análise comparativa do desenvolvimentismo militar e o ativo e altivo protagonismo internacional do governo de Luiz Inácio Lula da Silva
Authors: Zagni Rodrigo Medina
Published: March 2023

Este trabalho analisa comparativamente os discursos da política externa brasileira durante os períodos em que prezou o multilateralismo (governos Médici/Geisel e Lula) e os argumentos de autoridades palestinas em busca de apoio político e reconhecimento internacional. São analisadas também as respostas obtidas em arenas multilaterais com o objetivo de qualificar o animius da política internacional sobre o tema. O pressuposto é o de que o posicionamento brasileiro sobre a Questão Palestina é estratégico para sua inserção como ator global, resultando em relevante capital político a ser explorado em outras agendas.
A importância da ciência para o desenvolvimento da tecnologia e suas respectivas influências na educação
Authors: Gomes Eline Valeria Oliveira , Teixeira Ana Paula Nascimento de Sousa , Dos Santos Maria Nifa Mendonça , Pereira Simone Gunçalves , De Souza Albert Palheta , De Paula Igor Arthemis Pinho
Published: March 2023

Este artigo objetiva compreender a relevância da ciência para o desenvolvimento da tecnologia, que, por sua vez, contribui com os sistemas educacionais. A ciência vem se desenvolvendo a cada dia mais, desde a idade moderna. Atingindo diversas perspectivas do saber e inovações, e a tecnologia vem sofrendo, positivamente, com estes avanços. Esta tecnologia vem ganhando mais espaço na sociedade de maneira, cada vez mais, perspicaz, seja no âmbito político, econômico, cultural, de saúde, de educação etc. Nesse sentido, destaca-se à importância da tecnologia para a otimização e sistematização da educação com o intuito de colaborar com o processo de ensino-aprendizagem. Este artigo tem como objetivo entender e analisar a importância da ciência para o desenvolvimento da tecnologia e suas respectivas influências na educação. A coleta de informações foi realizada através do levantamento e análise de ideias diferentes trazidas por livros e artigos que tratam da temática apresentada. Quanto a metodologia foi utilizada a abordagem qualitativa e procedimento técnico bibliográfico. Assim sendo, elucida-se neste artigo a temática do papel da ciência para o desenvolvimento da tecnologia e suas respectivas influências no meio educacional, contribuindo, consequentemente com a sociedade, especialmente com as diretrizes da produção acadêmica.
A importância da prospecção de cenários e gestão de riscos para a Polícia Militar do Paraná
Authors: Fávero Marcelo Roke
Published: March 2023

O presente artigo trata da relevância de cenários futurísticos sobre segurança pública aplicada à Polícia Militar do Paraná, bem como da gestão e gerenciamento de risco, trazendo os conceitos inerentes ao gerenciamento, as normativas e sua aplicabilidade. O principal objetivo é mostrar a sua importância e propor a aplicação na Polícia Militar do Paraná, por meio de robusta pesquisa bibliográfica e coleta de documentos sobre o tema, além de utilização de estudo comparado com a doutrina utilizada pela Polícia Militar do Distrito Federal. After analyzing risk management as a whole, it concludes on the need for this application in the Military Police of Paraná, on which the present study had its focus, subsidized by the verification that the analysis of futuristic scenarios and risk management is a important advisory tool in the decision-making process.
Kepuasan Kerja: Lingkungan Kerja, Role Stress, dan Kompensasi Finansial
Authors: Sukmakirana Viandita Wahyu , Nurwanti Nurwanti
Published: March 2023

The purpose of this study was to determine the effect of Work Environment, Role Stress and Financial Compensation on Job Satisfaction. The population in this study were employees of Operation Directorate at PT X. Samples were obtained using a saturated sampling technique and data were collected by distributing questionnaires. Respondents involved in this study amounted to 67 employees. Data were analyzed using Simple Regression and Multiple Linear Regression. Based on the hypothesis test, the results of this study are Work Environment, Role Stress and Financial Compensation have a significant effect on Job Satisfaction.
Pengaruh Kepemimpinan Transformasional, Kompensasi, dan Job Burnout terhadap Kinerja Karyawan
Authors: Ramadhini Fatimah Azzahra , Widayati Nurti
Published: March 2023

This study aims to examine the effects of transformational leadership, compensation, and job burnout on employee performance. The object of this research is all the employee staffs of PT. Wahana Wirawan. The sample in this study were 78 staffs employee using purposive sampling method by distributing questionnaires. The data in this study were analyzed using multiple regression. The result obtained in this study indicate that transformational leadership and compensation affects employee performance in PT. Wahana Wirawan while ob burnout does not affect employee  performance ini PT. Wahan Wirawab, it can be assumed that the quality of transformational leadership and compensation is already in a great condition and meet the comfort level to create great employee performance.
Analisis Rasio Keuangan yang mempengaruhi Harga Saham Perusahaan Publik
Authors: Nabilah Ade Putri , Arilyn Erika Jimena
Published: March 2023

The purpose of conducting this research is to analyze whether the financial ratio variables contained in this study affect the stock prices of public companies in the consumer goods sector listed on the Indonesian Stock Exchange in 2010-2021. The variables studied are earnings per share, total asset turnover, current ratio, debt to equity ratio, return on assets and price earning ratio. In collecting the sample, the technique used was purposive sampling and there were 11 companies that fulfilled the criteria and were analyzed using panel data regression and the best model that had been selected for this study was the fixed effect model. The results of this study indicate that earnings per share, return on assets and price earning ratio have an effect on stock prices and other variables have no effect on stock prices. Hopefully that in future research would add other variables and use more research timeframes in order to provide better results.
Faktor mempengaruhi Nilai Perusahaan pada Sub Sektor Makanan dan Minuman di BEI
Authors: Pratiwi Anggi Dwi , Beny Beny
Published: March 2023

The purpose of this research is to test and analyze the effect of investment decisions, funding decisions, dividend policy, firm size, profitability, and liquidity on company’s value. The research sample used was companies listed in the food and beverages subsector in Indonesia Stock Exchange for the period 2010-2020. The sampling method in this purpose used purposive sampling. With this sampling method used purposive sampling, there were 7 companies that meet the sampling criteria and 77 data were obtained to be used as samples. The research method used in this study was descriptive statistics, and panel data regression, with the chose model the fixed effect model. The result of this study indicate that investment decisions and firm size have a positive effect on company’s value. While funding decisions, dividend policy, profitability, and liquidity do not affect compan’s value.
Ultrasound assisted extraction of carotenoids from green and orange biomasses of Dunaliella Salina DunaDZ1
Authors: Yaiche Achour Hafsa , Blanco Llamero Cristina , Saadi Sid Ahmed , Zitouni Abdelghani , Señoráns Fransisco Javier
Published: March 2023

Microalgae are described as a potential alternative source of bioactive compounds that are environmentally friendly. Dunaliella on its own is well known due to its potential to accumulate large amounts of carotenoids, especially β-carotene. Green and orange biomasses from a new Dunaliella salina strain DunaDZ1 isolated from an Algerian Salt Lake were evaluated for carotenoids composition and antioxidant activity. Ultrasound-Assisted Extraction (UAE) was employed using different extracting solvents. Furthermore, UAE extracts were then analyzed for their chemical composition by TLC, HPLC-DAD and for the antioxidant activity. Lutein was the main carotenoid in the green biomass, with the highest amount for ethyl acetate extract (393.19 mg/g). However, for the orange biomass, the main carotenoid was trans, β-carotene (131.83 mg/g) in the acetonic extract. Moreover, several others carotenoids were detected, belonging to xanthophylls and carotenes. Additionally, ultrasonic-assisted extraction with ethyl acetate produced the extract with the highest antioxidant activity for both D. salina biomasses. These extracts could be used as a natural antioxidant and as an ingredient for functional foods formulation.
The stability of whey protein-stabilized red palm oil emulsion from a rheological perspective
Authors: Armetha Vallerina , Hariyadi Purwiyatno , Sitanggang Azis Boing , Yuliani Sri
Published: March 2023

The objective of this study was to investigate into the physical stability of whey protein (WP)-stabilized red palm oil (RPO) emulsions based on rheological properties such flow behaviour, viscoelastic properties, apparent viscosity (ηapp), and linear viscoelastic range limits (LVE). RPO emulsification was stabilized by three types WP with different protein content, notably WPI90, WPC80, and WPC76, and the influence of WP type and concentration (2.5-15%) was evaluated. Utilizing the type and concentration of WP used, RPO emulsions with good apparent thermodynamic stability could be formed. All of the emulsions showed shear-thinning flow behaviour with viscous properties (G" >> G′). However, as a result of the different WP types and concentrations utilized, the emulsions produced had varied kinetic stability and rheological properties. Droplet characteristics, such as D10, D50, and D90, ζ potential, and electrical conductivity were determined, and rheological data gained corresponded with these properties to explain emulsion stability. The LVE value reflected the stability of the produced emulsions as well as the ηapp difference. The emulsion stabilized with 15% of WPC76 had optimum physical stability in this study, with an LVE of 7.9%. This study demonstrate that rheological characterization can be employed to assess the stability of WP-stabilized RPO emulsions.