bluuebunny/crossref_metadata_2025 huggingface dataset:
La evolución, la percepción y los mecanismos cerebrales implicados en el atractivo facial: un análisis desde la Psicología Evolucionista
Authors: Zambrano Danilo
Published: April 2023

Tradicionalmente, las teorías sociales han explicado el atractivo facial como una característica cultural aprendida a través de los procesos de socialización. Sin embargo, la Psicología Evolucionista ha propuesto que hay rasgos del atractivo físico que son universales y que han sido influenciados por la selección natural y sexual, ya que indican la calidad reproductiva y de salud de quien los posee. La investigación en torno a las características faciales y sus implicaciones sociales es amplia. Este texto tiene como objetivo resumir tales esfuerzos desde una perspectiva evolucionista y explorar sus implicaciones sociales. Además, se brinda una síntesis de la evolución facial, se examinan los mecanismos cerebrales implicados en la percepción del atractivo facial y se discuten las teorías de la Psicología Evolucionista sobre los rasgos que hacen a una persona atractiva y por qué. Por último, el texto concluye con una serie de predicciones sobre futuros estudios del atractivo facial y comparte una serie de bases de rostros que pueden ser utilizadas para la investigación y el desarrollo de tesis tanto de pregrado como de posgrado.
Sistema de cooperativismo na Paraíba
Authors: Nepomuceno Aniuska Almeida
Published: April 2023

O cooperativismo é dotado de princípios de elevada nobreza e valor humano, os quais são capazes de criar uma dimensão superior de administração das atividades econômicas governamentais, e empresariais, com o firme propósito de consolidar benefícios sociais e autônomos, aos participantes dos atos cooperados e suas relações técnicas e comerciais [...]
Information Support of «Great Reform» in Russian Provincial Publishing in the Middle of the 19th Century (Regional Newspapers of Penza Region are Taken as a Subject of the Research)
Authors:   Penza State University, Shpakovskayа S. V.
Published: April 2023

I show the discrepancy between the perspectives and actual functioning of the state regional papers. The peculiarities of the development of Russian provincial publishing during the reforms of 1861 are discussed in the article.
Reform Projects of Universities in Russia at the Beginning of XX Century
Authors:   Saratov State University, Morozov A.G.
Published: April 2023

The subject of these article is projects of university statute, developed in Russia at the beginning of XX century, their comparative characteristic is also given. The author examines the issues of academy autonomy, government policy in the sphere of higher education, etc.
Role of Lawyers at Political Trials in 1905
Authors:   Yuri Gagarin State Technical University of Saratov, Mosolkin S. V.
Published: April 2023

Article is devoted the analysis of system of rules and the ethical principles of defence developed by the Russian attorneys at law at political trials in 1905. In article it is told about antagonism between the government and the Bar in days of the first Russian revolution. The author does a conclusion that studying and preservation of classical traditions of pre-revolutionary legal profession, as basic institute of a civil society, is actual for a modern society.
Some Facts from the History of Evaluation of Militari Officers in the Russian Armi
Authors:   Military institute for advanced training of specialists mobilization bodies of the Armed Forces of the Russian Federation, Poroshin A.A.
Published: April 2023

The disappointing results of WWI force people to look for the reasons for lack of proficiency of some commanders of that period. One of the factors that influenced their career development and high ranks was the evaluation system in Russia. The history of emergence and transformation of its basic principles has been described in the article.
Formation and Making Policy Decision about Bringing of Russian Force into Chechnya (1992–1994)
Authors:   Saratov State University, Alexandrov A.A.
Published: April 2023

The article is devoted to the analysis of the causes of the beginning of the war in Chechnya. The author examines the questions of making policy decisions about the putting into bringing of Russian forces Chechnya, town of Grozny. Special attention is paid to the Chronology of that time and actions of Russian political forces and political forces of Chechnya.
«Journey» of Holy Relics in the Perception of Abbot Guibert of Nogent
Authors:   Saratov State University, Donezki P.B.
Published: April 2023

In the article the intelligent monk’s opions at the wanders and his relation to the miraculous paperties of the relics are researched. The functions of relics are tracked in the landmark for understanding the wonders of the era. The research is based on a new, not put into domestic circulation medievalism material autobiography Guibert of Nogent.
English Historian D. Nicolle about the Warriors of Byzantine, theirs Arms and Armour (Historiography of the Problem)
Authors:   Penza State University, Shpakovsky V. O.
Published: April 2023

The arms and armour of the Byzantine warriors are studied in the article as it was shown by David Nicolle, a well known English historian of medieval history.
Saratov voevoda Vladimir Annichkov (1607–1608)
Authors:   Saratov State University, Rabinovich Yа.N.
Published: April 2023

This article is devoted to the life of one of the little-known figures of the time of the Trouble who was in the center of events in the middle and low regions of the Volga. The author regards the following destiny of this person, his turn to the side of Michael Romanov’s government, his occupation as a voevoda of Ufa and taking part in the defense of Moskow during the Polish attack in 1618. The article deals with the unknown facts of Saratov history during boyarin Fyodor Sheremetiev’s campaign on the Volga, regards the names of the ordinary defenders of Saratov from the impostors’ army.
The Accuracy of WebMD Symptom Checker for Diagnosis of COVID-19 in Admitted Patients in Imam Hassan Hospital of Bojnurd
Authors: Forouzanian Saeed , Ghodrati Faeze , Ghafouri Majid , Taghavi Mohammad Reza , Shokrian Zahra
Published: April 2023

Background: Coronavirus has caused rapid disruption to daily life with significant morbidity and mortality. The infection spreads mainly through respiratory droplets expelled by infected individuals. Several web-based symptom checkers have been used to avoid unnecessary in-person visits during the pandemic. WebMD’s symptom checker contains a course of multiple-choice questions about symptoms. At last, a record of differential diagnoses is assembled.
Methods: This study chose 105 hospitalized patients in the isolation ward. We entered the data about symptoms and comorbidities in the WebMD symptom checker to find the most probable diagnoses proposed by the website for 66 patients whose polymerase chain reaction (PCR) test was positive and investigated the frequency of initial symptoms, present symptoms, and chief complaints.
Results: The average age was 47.41 ± 13.52. Of 66 patients, 23 were correctly diagnosed with coronavirus disease 2019 (COVID-19) as the first diagnosis with the WebMD symptom checker. In 41 cases, COVID-19 was one of the three main diagnoses. The most common initial symptoms were fever in 24%, sore throat in 12%, and myalgia in 12% of patients. The most common chief complaints were fever in 34% and dyspnea in 28% of patients. The most common present symptoms were myalgia in 81%, fever in 80%, fatigue in 75%, and dyspnea in 72% of patients.
Conclusions: WebMD symptom checkers can act as a first tool first, to diagnose and, second, to avoid in-person physician visits. Moreover, it can be used for the first diagnosis in primary care health organizations. Myalgia can be considered one of the most common present symptoms.
Measurement of the Satisfaction Level of the Country’s Pharmaceutical Industry with Suppliers of Raw Materials in This Industry Using System Dynamics
Authors: Nooshiravani Yousef , Bazai Qasem Ali , Aligholi Mansoureh
Published: April 2023

Background: The success of the supply chain can be summed up in the satisfaction level of business partners and customers, according to several diverse needs of each of the business partners in the studied supply chain, including the country’s pharmaceutical industry and suppliers of raw materials.
Methods: This study has attempted to investigate satisfaction according to the views under possible scenarios to improve satisfaction. The model presented in this regard to realize the main objective of this study is based on the principles of system dynamics, and VENSIM DSS has been used for its design.
Results: according to the study results, it can be acknowledged that the satisfaction of each of the business partners with the supply chain is different from each other, and the best scenarios to improve the satisfaction include an improvement of 3% in inventory management and a reduction by 5% in rework and parallel work during the studied period.
Conclusions: Under this scenario, the satisfaction of business partners in this regard will improve during the studied period, or in other words, the satisfaction of the parties will move optimally.
The Influence of the Motivational Factors on Work Performance
Authors: Constantinescu Alina , Stegăroiu Ion
Published: April 2023

The employee motivation at the organizational level is naturally quantified in achieving performance goals. In this paper are studied the motivational factors from the perspective of employee work performance reflected, vertically, in the organizational performance and further in the macroeconomic performance. Using an empirical study in which the observed data were obtained through a survey conducted in this year among the Romanian employees, in this paper we validate three hypotheses that establish the association of employee performance, on the one hand with proactive personality traits and on the other hand with certain motivational factors. As well, we highlight some managerial implications that can contribute to increasing workplace performance by using of appropriate motivational factors.
Estimation of the Rejection Boundaries of the Spacecraft Schematic Layout by Thermal and Erosive Effects Level of the Electric Rocket Engines Plasma Jets
Authors: Nadiradze А.B. , Dudunov А.А.
Published: April 2023

The paper proposes an engineering method to account for thermal and erosive effects of the electric rocket engine plasma jet on the spacecraft structural elements with the electric rocket engines installed on a spacecraft. The method is based on introducing the rejection boundaries that define the region of space, where installation of the spacecraft structural elements is unacceptable from the point of view of certain impact type. The rejection boundary is a surface, where the impact indicators are equal to the allowable value, inside the boundaries they exceed the allowable values (critical impact area), and outside the boundaries they stay below the allowable values (admissible impact area). If the spacecraft elements appear in the critical impact area, position of the electric rocket engines on the spacecraft should be corrected. Equilibrium surface temperature is the thermal effect indicator, which should not exceed the given allowable value; an erosion depth is the erosive effect indicator. Allowable level of erosive action depends on material and characteristics of the sprayed structural element. The considered indicators were determined by the ion current density at the given point in space for the worst case without accounting for the jet ions angle of incidence on the surface. Rejection boundaries were found for the plasma jet thermal and erosive effects of the SPT-100 stationary engine on various materials. It is shown that, incontrast to the traditionally used limitation on the jet divergence angle, the rejection boundary method makes it possible to significantly improve the accuracy of estimates and reduce the probability of errors in the layout of a modern spacecraft
Las concepciones de la política social
Authors: Ocampo José Antonio
Published: April 2023

La pugna entre dos concepciones de la política social se ha revivido de nuevo en los últimos años. Mientras la primera de ellas, que ha servido como base fundamental para la reforma de la política social en las últimas décadas, hace énfasis en la focalización de los subsidios del Estado hacia los sectores más pobres de la población y el diseño de esquemas público-privados para la provisión de servicios sociales; la segunda pone énfasis sobre la necesidad de cimentar la política social sobre diversos principios, entre los que se destacan los de universalidad y solidaridad. Esta última concepción retorna a las raíces sobre las cuales se desarrolló la política social en la posguerra —y en algunos casos desde antes— que, sin embargo, tuvo un avance limitado en nuestra región, debido al alcance restringido del empleo formal sobre el cual se cimentó su desarrollo. Este ensayo revisa este debate y se inclina hacia la segunda de estas concepciones sobre la base de una visión de ciudadanía social.
Effects of Graded Seedling Transplanting on Growth, Yield and Medicinal Materials Quality of Astragalus membranaceus var. Mongholicus
Authors: Li Xiaojie , Mu Yingtong , Zhang Xiaoming , Wang Junjie
Published: April 2023

Background: Transplantation of Astragalus Mongholicus seedlings, compare the growth and development of astragalus and its yield and quality after graded transplantation, to provide the basis for improving the yield and quality of astragalus medicinal materials. Methods: With the planting of Astragalus Mongholicus seedlings for one year as the material were divided into four grades according to different lengths and thicknesses and the indexes of plant height, thick stem, stem and leaf weight, root length, thick root, yield, Astragaloside IV and Calycosin7-O-β-D-Glucopyranoside content after different seedlings grades were determined. Result: There is a close connection between the grade of Astragalus Mongholicus seedlings and the quality of the yield of medicinal materials. After graded transplantation, the yield of medicinal materials improves 38.52kg/667m2 compared to the traditional transplantation method. The content of Astragaloside IV and Calycosin7-O-b-D-Glucopyranoside is also closely related to the seedling grade, the content of Astragaloside IV in the medicinal materials after transplanting the second and third grade seedlings was more than 0.02% higher than that of the first and fourth grades, after transplantationof the grade I seedlings, the content of Calycosin7-O-b-D-Glucopyranoside in the medicinal materials was more than 0.01% higher than that of the other three grades. The yield of astragalus medicinal materials is the highest after the seedlings are transplanted by grade and the content of the main active components of the medicinal materials is quite different after the different grades of seedlings are transplanted. Therefore, in actual production, the seedlings should be transplanted according to different specifications and grades to improve the yield and quality of astragalus.
Mobile learning as a new technology in education
Authors: Uzunboylu Huseyin , Azhar Niyazshina
Published: April 2023

The article discusses mobile technologies as a new direction in education. The specific features of mobile learning in different variants of interaction of subjects of the educational process in the "teacher-student" system are revealed. The article examines the set of pedagogical conditions that determine the need for the development of mobile learning as one of the leading technologies of the knowledge management system in modern education. The possibilities of effective use of mobile learning in the conditions of technical equipment and psychological readiness of the subjects of the modern educational process are analyzed. Attention is drawn to such factors as the growth of uncertainty and the complexity of information flows in the competitive environment of the developing "digital universe", which requires the rapid mastery of numerous forms of interaction.
Differences in Academic Resilience, Academic Engagement and Academic Achievement according to Academic Coping Strategies Profiles of Mongolian Students in Korea
Authors:   Global Studeis Education Association, Delgermaa B. , Kim Myung-Seop
Published: April 2023

This study aims to examine the academic stress coping strategies profiles of Mongolian students in Korea and to explore the differences in academic resilience, academic engagement, and academic achievement according to academic stress coping strategies profiles. The study respondents were 211 students from the 5th grade of elementary school to the 3rd grade of high school at a Mongolian school in Korea. As a result of the study, five types of latent profiles were found to be suitable for the data. 'The lowest adaptive coping strategies+the and lowest maladaptive coping strategies group' (Group 1), 'The high adaptive coping strategies+low maladaptive coping strategies group' (Group 2), 'the low adaptive coping strategies+moderate maladaptive coping strategies group' (Group 3), 'adaptive coping strategies+high maladaptive coping strategies group' (Group 4), and 'medium adaptive coping strategies+high maladaptive coping strategies group' (Group 5). Examining the differences between profiles in academic resilience, academic engagement, and academic achievement, with the exception, academic resilience, academic engagement, and academic achievement of the 'high adaptation + low maladjustment academic stress coping strategies' group and 'high adaptation + high maladaptive academic stress coping strategies' group were higher than the other groups. Based on the research results, educational interventions to help Mongolian students in Korea were discussed.
한국의 통일 중심 평화교육의 전개와 실천
Authors:   Global Studeis Education Association, Lee Jung-Hi
Published: April 2023

The purpose of this paper was to clarify the characteristics of peace education (PE) in South Korea. To this end, this paper investigated the following three specific areas: First of all, it drew on previous research to describe trends in PE in South Korea. Next, it presented how unification education (UE), which is the center of PE in South Korea, has changed. Finally, it examined the reality of school unification education (SUE) in order to see what types of PE and UE are practiced in schools. As a result of this study, the following four characteristics of PE in South Korea were clarified. First, UE is at the center of the discussion of PE in South Korea. Second, UE in South Korea is shifting from an anti-communist approach to a peace and UE approach. Third, SUE is carried out throughout the curriculum, centered on experience, events, and connection with the community. Fourth, classes are carried out mainly by students through dialogue based on discussions. PE like this centered on UE is expected to continue in South Korea for the time being.
Archeologia totalitaryzmów — możliwości i perspektywy badawcze
Authors: Trzciński Maciej
Published: April 2023

Contemporary methods used by archeology create prospects for a fuller investigation of crimes against peace and humanity and of war crimes. Due to the lack of written sources or the limited scope of information that results from them, attempts can be made to find and interpret material sources directly related to the events under study. The methods used by archeologists can finally effectively verify information already obtained from archival sources.

Today’s archeology extends its reach to the present, and new specializations such as archeology of armed conflicts or archeology of totalitarianisms contribute to a better identification of, among others, the contemporary history of Poland. These specializations are used all over the world in the process of investigating crimes against humanity and accompany ongoing criminal investigations.
Nomear o inominável e conhecer o incognoscível: o estatuto das processões de Dionísio
Authors: Calvário Patrícia
Published: April 2023

Uma vez que, segundo Dionísio, o Areopagita, Deus é inominável, qual seria o status dos termos aplicados a ele? A que se referem os nomes atribuídos a Deus? Por outro lado, esses nomes concedem um conhecimento do ser divino? De que forma? Meu objetivo é elucidar o significado e os argumentos da perspectiva de Dionísio sobre o possível conhecimento de Deus através das procissões ou energias. Este conceito será crucial para o desenvolvimento da filosofia hesicástica do século XIV. A interpretação correta do Corpus Areopagiticum será um dos principais tópicos de discussão entre Gregório Palamas e Barlaão, o Calabrês. Palamas evoca a noção de Dionísio Areopagita de “procissões” para fundamentar a distinção entre essência e energias em Deus. Estas πρόοδοι são a “extensão” de Deus fora de si mesmo; são várias, distintas umas das outras e não criadas.
Possibilidades para uma espiritualidade política e uma forma de vida não fascista
Authors: Correa Sérgio Fernando Maciel
Published: April 2023

Este artigo é uma espécie de vanguarda da retaguarda, pois ao mesmo tempo em que quer avançar, sendo portando de filosofia política contemporânea é convocado a retornar em busca de conceitos antigos, mas que não envelheceram. A parresía cínica com os seus desdobramentos é um exemplo desse retorno aos antigos. O texto, outrossim, dedica-se a responder a questões que interrogam pela utilidade das revoltas e das insurreições, pelo papel dos intelectuais diante do poder. O artigo procura problematizar, seguindo os estudos de Michel Foucault, as formas tradicionais de pensar a ação política, e pleiteando, ao mesmo tempo um tipo de responsabilidade política para a filosofia. Por fim, indaga-se pela possibilidade da constituição de uma responsabilidade política para a filosofia concebida como forma de vida. Como resultado, há a perspectiva de um conteúdo ético para a ação política.
relações entre física e metafísica a partir do realismo científico
Authors: Da Silva Vinícius Carvalho , Passos Videira Antonio Augusto
Published: April 2023

No presente artigo procuramos demonstrar por meio das posições de inúmeros físicos e filósofos da física que a relação entre física e metafísica é inevitável para o trabalho científico, isto é, que todo físico assume alguma metafísica de modo mais ou menos crítico. Defendemos que o realismo os físicos, com diferentes graus de conhecimento e elaboração filosófica, assumem o realismo científico como seu pressuposto metafísico. Argumentamos que há uma imbricação entre pressupostos metafísicos e princípios axiológicos. Assim, o realismo científico não se faz notar somente nas teorias físicas. Ele está presente também no nível das práticas e dos valores, ou seja, do ethos da comunidade dos físicos.
Density and Growth Rate of Nannochloropsis oculata with Different Photoperiods
Authors: Sanjayasari Dyahruri , Rahmasari Faradita , Khasanah Imroatun , Imlani Ainulyakin
Published: April 2023

Nannochloropsis oculata is a type of single-celled or eukaryotic phytoplankton belonging to the class Eustigmatophyceae. This type of microalgae is widely used as natural food for rotifers and fish larvae because it has a high nutritional content. Given this role, many species of Nannochloropsis oculata are cultivated by culture. The success of microalgae culture is influenced by growth factors such as light intensity, CO2, temperature, and nutrition. However, in the process problems often arise regarding the unstable growth of Nannochloropsis oculata. This is usually caused by factors that affect growth, such as light that is not optimal. Based on these problems, it is necessary to conduct research that aims to determine the growth rate of Nannochloropsis oculata with different irradiation treatments. The research method used was an experimental method with 4 treatments i.e., A (24L : 0D), B (12L : 12D), C (18L : 6D), and D (6L : 18D). The results showed that different light exposure period on the density of Nannochloropsis oculata microalgae had no significant effect on their growth rate. Even though the results of statistical tests of photoperiod administration did not affect the production of Nannochloropsis oculata microalgae cell density, the treatment with the dark phase resulted in better growth.
Group-Frames for Banach Spaces
Authors: Krishna K. Mahesh
Published: April 2023

In the literature, frames generated by unitary representations of groups (known as group-frames) are studied only for Hilbert spaces. We make first study of frames for Banach spaces generated by isometric invertible representations of discrete groups on Banach spaces. These frames are characterized using left regular, right regular, Gram-matrices and group-matrices on classical sequence spaces. A sufficiently large collection of functional-vector pairs using the double commutant of the representation is identified which generate group-frames for Banach spaces. Subsequently, we study Schauder frames generated by time-frequency shift operators on finite dimensional Banach spaces. We derive Moyal formula, fundamental identity of Gabor analysis, Wexler-Raz criterion and Ron-Shen duality in functional form.
A Maturity Model for the Scientific Review of Clinical Trial Designs and Their Informativeness
Authors: Dolley Shawn , Norman Thea , McNair Doug , Hartman Dan
Published: April 2023

Many clinical trials end uninformatively. Informativeness, in the context of clinical trials, defines whether a study’s results definitively answer its research questions with meaningful next steps. One subset of these trials are those focused on global health set in low-resource settings. Global health clinical trials benefitting people in low-resource settings are funded primarily by a limited number of large foundations, pharmaceutical firms (“industry”), and national governments. While clinical trial protocols are required to go through reviews in regulatory and ethical domains, outside of industry-funded trials, funders rarely require focused scientific design reviews. There are no documented standards and processes, or even best practices, for funders to perform scientific reviews after the funding commitment. Considering the investment in and standardization of ethical and regulatory reviews, and the prevalence of studies ending without clarity or never finishing, it may be that scientific reviews of trial designs with a focus on informativeness offer the best chance for improved outcomes and return on investments in clinical trials. A maturity model is a helpful tool for knowledge transfer to help grow capabilities in a new area, or for those looking to perform a self-assessment in an existing area. Such a model is offered for scientific design reviews of clinical trial protocols: a valuable and often-neglected governance step for funders or sponsors, among others. This maturity model includes 11 process areas and 5 maturity levels. Each of the 55 process area levels is populated with descriptions on a continuum toward an optimal state to improve trial protocols in the area of risk of failure. This tool allows for prescriptive guidance on next investments to improve attributes of post-funding reviews of trials, with a focus on informativeness.
Isolation of a PRD1-like Phage Uncovers the Carriage of Three Putative Conjugative Plasmids in Clinical Burkholderia Contaminans
Authors: Stanton Cassandra R , Petrovski Steve , Batinovic Steven
Published: April 2023

The Burkholderia cepacia complex (Bcc) are a group of increasingly multi-drug resistant opportunistic bacteria that can cause severe pulmonary infections. This resistance is driven through a combination of intrinsic factors and the carriage of a broad range of conjugative plasmids harbouring virulence determinants. Therefore, novel treatments are required to not only treat Bcc infection but also to prevent further spread of these virulence determinants. In the search for phages infective for two clinical Bcc isolates, CSP1 phage, a PRD1-like phage was isolated. CSP1 phage was found to require pilus machinery commonly encoded on conjugative plasmids to facilitate infection of multiple Gram-negative bacteria genera including Escherichia and Pseudomonas. Whole genome sequencing and characterisation of one of the clinical Burkholderia isolates revealed it to be Burkholderia contaminans. B. contaminans 5080 was found to contain a genome of over 8 Mbp encoding multiple intrinsic resistance factors, such as efflux pump systems, but more interestingly, carried three novel plasmids encoding multiple putative virulence factors for increased host fitness, including antimicrobial resistance. Even though PRD1-like phages are broad host range, their use in novel antimicrobial treatments shouldn’t be dismissed, as the dissemination potential of conjugative plasmids is extensive. Continued survey of clinical bacterial strains is
Effect of Pre-Soaking Treatment Method on Plant-Based Aggre-Gate for Production of High-Strength Lightweight Concrete
Authors: Yew Ming Kun , Yew Ming Chian , Beh Jing Han , Lee Foo Wei , Lim Siong Kang , Lee Yee Ling , Lim Jee Hock , Kabeer K. I. Syed Ahmed
Published: April 2023

This research investigates the effect of pre-soaking treatment on plant-based aggregate using a wet grout binder to formulate a high-strength lightweight concrete (HSLWC). The surface modification utilising a novel grout soaking technique with various water-to-cement (w/c) ratios indicated a new method of approach for the recent development of lightweight plant-based aggregate (LWPA). In this experiment, the fresh and hardened properties of modified LWPA lightweight concrete were assessed by verifying their workability, densities, compressive and split tensile strengths towards the modulus of elasticity. The results showed that pre-soaking plant-based lightweight aggregate (w/c: 0.6, 0.8, 1.0, and 1.2) slightly increased the density of the samples compared to untreated LWPA. The oven-dry density of treated and untreated LWPA is controlled in the range of HSLWC. The outcomes indicated that the workability of the surface- modified LWPA has significant improvement up to 40% in 6 min for (TDS)/0.6 sample compared to the original LWPA. The mechanical properties of the LWPA concrete with surface modification method exhibit substantial increment of compressive strength, split tensile strength, and modulus of elasticity were recorded at 22%, 26%, and 34%, respectively. Significantly, the findings from this scientific method revealed that the pre-soaking treatment method on LWPA has shown to be a highly recommended technique in improving interfacial bonding while performing as one of the most promising solutions to improve the properties of lightweight concrete.
The Dynamic Structural-Material Complexes of the Earth’s Crust
Authors: Копылов Аркадий
Published: April 2023

Annotation. The self-similar dynamic structural-material complexes (SMC) from the composition of the Solar System over a period of about 4.5 billion years of the earth's crust, of the Earth's development under the conditions of self-organization, are periodically formed. The synchronous or close-in-time series of genetically or paragenetically related igneous, ore-mineral, metasomatic, sedimentary formations, their structures, and other processes accompanying them, each complex (SMC) includes. Each complex in its formation is limited in time and space, according to the manifestation of the features of a spontaneous dynamic process; spreads in the volume of the Earth in a certain historical period; forms the composition and structure of the Earth's crust at this stage, its polycyclic development determining. The number of cycles is about 14, with decreasing duration of their manifestation.
An improvement of suppliermanufacture inventory system integrated with stochastic periodic review modeling for SMEs in Indonesia
Authors:   Atma Jaya University, Dewa Parama Kartika , Patanduk Yuharningsih ,   Atma Jaya University, Jumintono  ,   University Tun Hussein Onn Malaysia
Published: April 2023

SME LCR is one of the handicrafts SME in Yogyakarta, Indonesia. This SME produces several handicraft products such as storage baskets with various variants, and furniture. The process of ordering raw materials for SMEs is carried out when there is a demand for incoming products with the order quantity based on the raw material needs in meeting product demand. This study intends to provide recommendations for improving raw material governance to overcome demand fluctuations during the lead time and reduce the total cost of supply chain inventory by implementing an integrated inventory system. To meet the study aim, the EOQ Probabilistic P system (Period Review Method) is utilized. The P inventory model is distinguished into two models namely model P with backorder and model P with lost sales. Next, the Purchase Cost (Ob) and Procurement Costs are applied to the P model. The research method comprises through 3 stages: the pre-field stage, field stage, and the advanced stage (laboratory analysis, data analysis, and reporting). Given the results regarding banana and mendong raw materials supply, it can be observed that for banana raw materials, the reorder time interval that can generate the minimum total inventory cost for banana raw materials is 0.1470 years or 53 days with a total cost of IDR 263,721,081.72. Moreover, it is seen that the suggested model generates the minimum total cost of supply chain inventory compared to the SME policy and the individual model, which justifies the economic feasibility of this model.
Determination of the maximum time limit on a specific time work agreement in the view of legal certainty and fairness
Authors:   Ahmad Dahlan University, Shalihah Fithriatus , Adhayanto Oksep ,   Maritime University of Raja Ali Haji, Indra Mexasai ,   Riau University, Agusmidah  ,   University of Sumatera Utara
Published: April 2023

Labour as a party with a relatively weak bargaining position must receive legal protection from the state. Justice for workers is a condition that ensures the continuity of their employment relationship status and justice for the welfare of workers. This study aims to provide an overview of the legal changes regarding the maximum time limit of a certain work agreement that changes the justice of legal certainty in Indonesia. This study used the descriptive qualitative method. This research is formative research on labour law in Indonesia. This study uses three approaches, namely: a legislative approach, a conceptual approach and a comparative approach. The information base of research has been formed through using documentation and literature studies on the problems that occur with changes in employment status in Indonesia. Data were analyzed using Miles and Huberman models, namely data reduction, data tabulation, data presentation and conclusion drawing. The study results indicate that the application of the new regulation on employment is less fair and prosperous for workers with a certain time work agreement. The research results are expected to be taken into consideration for related parties to prioritize the welfare of workers for a certain period to improve the standard of living of workers for a certain period.
Intraoperative Dysrhythmias Cease After Venting During Intramedullary Nailing of an Impending Femur Fracture
Authors: Martinez Frank A. , Dugdale Evan M. , Sims Charles R. , Hofer Ryan E. , Sems Stephen A.
Published: April 2023

Case:

A 76-year-old woman with multiple myeloma and osteoporosis presented with right hip pain and an impending atypical femoral fracture in the setting of chronic bisphosphonate use. After preoperative medical optimization, she was scheduled for prophylactic intramedullary nail fixation. Intraoperatively, the patient experienced episodes of severe bradycardia and asystole associated with intramedullary reaming, which ceased after distal venting of the femur. No additional intraoperative or postoperative complications were encountered, and the patient recovered uneventfully.

Conclusion:

Femoral canal venting may be an appropriate intervention for similar transient dysrhythmias caused by intramedullary reaming.
Spatial distribution of fishing intensity of canvas stow net fishing vessels in the East China Sea and the Yellow Sea
Authors: Pei Kaiyang , Zhang Jiaze , Zhang Shengmao , Yanming Sui  , Zhang Heng , Tang Fenghua , Yang Shenglong
Published: April 2023

Present study used the position data of BeiDou Vessel Monitoring System (VMS) in 2018, with respect to motorised fishingvessels in the East China Sea and the Yellow Sea to construct a fishing vessel operating status classification model based onthreshold, deep neural network and DBSCAN density clustering algorithm. The geographic grid was divided into cells of0.1°×0.1° and the average fishing time per square km (h km-2) in each grid was calculated to obtain the spatial distributionof fishing intensity in the study region in 2018. The results showed that the threshold method could classify fishing vesselsailing, anchoring and other states with an accuracy of more than 95%. The deep neural network and DBSCAN algorithmcould classify the two states of netting and closing with an accuracy of 94.7%. By classifying the status of fishing vessels,quantitative monitoring can be carried out to better serve the management of marine fishery resources and marine ecologicalprotectionKeywords: China, DBSCAN, Deep neural network, Fishing intensity, Spatial distribution, VMS, Voyage extraction
Effect of stocking density on the survival and growth of tank-reared Deccan mahseer Tor khudree (Sykes, 1849)
Authors: Barlaya Gangadhar , C. H. Raghavendra  , K. Anantharaja  , B. S. Ananda Kumar  , K. Hemaprasanth
Published: April 2023

Deccan mahseer, Tor khudree (Sykes, 1849) is the most popular mahseer species of the Western Ghats. However, informationon optimising stocking density for fingerling rearing is not available for T. khudree. A study was undertaken to evaluate theeffect of stocking density on the growth and survival of the blue-fin mahseer, Tor khudree in fry to fingerling rearing. Fishwere reared for 90 days at stocking densities of 15, 25, 35 and 45 fish m-2 in soil-based 24 m2 masonry tanks. The tanks werefertilised initially with cow dung at 3 t ha-1 and were stocked with fry of T. khudree (mean length 1.31±0.09 cm; weight9.49±0.12 mg) after a week of manuring. A mixture (1:1) of powdered groundnut oil cake and rice bran was fed at 10% ofbody weight to the fish during the first month. Subsequently, fish were fed to satiation with a fishmeal-based sinking pelletedfeed (3 mm, 35% crude protein). The length of fish at harvest ranged from 5.03 to 6.43 cm and weight from 1.39 to 3.47 g.The mean final length, weight, specific growth rate and condition factor were the highest (p<0.05) under 15 m-2 and lowestunder 45 m-2 stocking density. The condition factor remained above 1 under all the treatments. No significant (p>0.05)difference in the survival of fish at harvest was recorded. Fish biomass estimates were higher (p<0.05) at higher stockingdensities. The similar (p>0.05) final length and condition factor between the stocking densities of 15, 25 and 35 m-2 and thehighest fish biomass at 35 m-2 indicate a stocking density of 35 fry m-2 as optimal for fry to fingerling rearing of T. khudree.
Keywords: Blue-fin mahseer, Peninsular carp, Seed rearing, Stocking density
Potassium amendment of inland saline groundwater: Insights into the physiological responses of silver pompano Trachinotus blochii (Lacepede, 1801) at different salinities
Authors: Pathak Madhuri S. , Lakra Wazir S. , Reddy Appidi K. , Chadha N. K. , Srivastava PP
Published: April 2023

A trial was conducted to evaluate the effect of graded levels of potassium (K+) amended inland saline groundwater (ISW) on serum ionic composition, antioxidant and metabolic enzymes [Na+/K+ATPase, Catalase, Superoxide dismutase (SOD), Glutathione peroxidase (GPx), Glutathione S-transferase (GST), Lactate dehydrogenase (LDH), aspartate aminotransferase (AST)] activities of silver pompano, Trachinotus blochii (Lacepede, 1801). The ISW was amended with 100% K+ at 5 ppt (ISW5), 10 ppt (ISW10) and 15 ppt (ISW15) and reconstituted seawater (RSW) with similar salinities (RSW5, RSW10 and RSW15) was employed as a reference medium. Experiment was conducted using completely randomised design. T. blochiijuveniles (1.5±0.5 g) were reared in 300 l capacity circular FRP tanks for 90 days. Fish were fed with commercial extruded floating feed. At the end of experimental period, serum ionic composition, enzymatic profiles and proximate composition were estimated. Results of the study showed that the serum ionic content (K+, Na+, Ca2+ and Mg2+) varied dose-dependently with salinity (p<0.05). Na+/K+ATPase, antioxidant enzymes (Catalase and SOD) and metabolic enzymes (GPx, GST, LDH and AST) showed higher activities at lower salinity (ISW5 and RSW5) compared to fish reared at 10 ppt and 15 ppt ISW. Similarly, proximate composition exhibited significantly (p<0.05) lower protein and lipid content at lower salinity (ISW5 and RSW5) signifying the stress condition at lower salinity. Physiological responses of T. blochii in terms of serum ionic composition, enzymatic profile and proximate composition were optimum at 10 and 15 ppt amended ISW, implying that rearing at 10-15 ppt with 100% K+ amendment of inland saline groundwater is appropriate.
Keywords: Antioxidant activity, Inland saline groundwater, Metabolic enzymes, Potassium amendment, Proximate composition
Effects of replacing fish meal with different levels of Lead tree (Leucaena leucocephala) leaf powder on growth, survival, digestive enzymes activity, muscle biochemical composition and texture of white-leg shrimp Penaeus vannamei Boone, 1931
Authors: Tran Thi Phuong Lan , Tran Thi Hong To
Published: April 2023

This study investigated the effects of replacing fish meal with Leucaena leucocephala leaf powder on survival,growth performance, digestive enzyme activities, biochemical body composition and muscle texture of the whiteleg shrimp (Penaeus vannamei Boone, 1931). Five different diets were examined, by replacing fish meal withL. leucocephala leaf powder at 0, 5, 10, 15 and 20%, in triplicates. Shrimps were stocked in 0.5 m3 tanks @ 70 shrimps pertank and fed on the experimental diets for a period of 60 days. The results showed that the survival rate (%), daily weightgain (g day-1), specific growth rate (% day-1), feed intake (% fish-1 day-1), feed conversion ratio, protein efficiency ratio, andprotein retention were not significantly different (p>0,05) among the treatment groups. The values of α-amylase and pepsinin the stomach and chymotrypsin (mU min-1 mg protein-1) in the intestine were not significantly different among treatments.However, the value of α-amylase in the intestine was significantly higher in animals fed diets that replaced fish meal withL. leucocephala leaf powder at 0, 5 and 10% compared to other treatments. The biochemical constituents (except for lipid)and the texture (N) of shrimp meat were not significantly different among treatment groups. The results suggested thatL. leucocephala leaf powder could replace fish meal up to 20% in white-leg shrimp diets.
Keywords: Digestive enzyme, Growth, Leucaena leucocephala, White-leg shrimp
Record of a central Indo-Pacific corallimorph in the Lakshadweep atolls and its competition with the hard corals
Authors: A. Alvin  , K. R. Aju  , K. R. Sreenath  , M. A. Pradeep  , E. A. Nisha  , K. K. Joshi
Published: April 2023

Coral reefs are disappearing worldwide because of mass bleaching, natural disasters, diseases and anthropogenic stressors.This leaves a large area of unutilised substratum, to which other benthic organisms, like corallimorpharians (CMs),anemones and macroalgae, can move in. In this article, we describe, for the first time, the competition for space betweena CM and the hard corals in Kavaratti Atoll in the Indian Ocean. This is the first reported instance of an invasion of CM inthe entire Lakshadweep Islands. The CM Rhodactis bryoides Haddon and Shackleton, 1893, is identified by morphologicaland molecular analysis. The species has not so far been reported from the western Indian Ocean area. We monitored the rateof invasion for six months to figure out the growth rate of CMs. This area did not have any prominent causative factors forCM outbreaks, such as external disturbances and nutrient enrichment. Yet our study showed that CMs are successful in thecompetition for space. More research needs to be done into the biology of this species, how it interacts with other benthicgroups and how the environment facilitates its spread.
Keywords: Bioinvasion, Coral reefs, Corallimorpharia, Phase shift, Rhodactis bryoides
Nonlinear Calculation of the Reinforced Concrete Road Pavement Slabs of Highways on the Elastic Basis by the Zhemochkin Method
Authors: Kumashov R. V.
Published: April 2023

A rectangular reinforced concrete slab is considered taking into account its physical nonlinearity on a linearly elastic homogeneous base under the action of a vertical external load. The anisotropy and heterogeneity of the slab are due to the properties of reinforced concrete, as well as the formation of cracks from the action of an arbitrary load during operation. The nonlinear problem was solved by the Zhemochkin method using the iterative algorithm of the Ilyushin elastic solution method. The Ritz method (determining the deflections of a slab with a pinched normal) and the Boussinesq solution (determining the displacements of points on the surface of an elastic half-space) were used to determine the coefficients of the resolving equations of the Zhemochkin method. At the first iteration, the slab was calculated as linearly elastic, 

orthotropic, and homogeneous; at subsequent iterations, it was calculated as linearly elastic, anisotropic, and inhomogeneous at each Zhemochkin site. The deflections of the middle surface of the slab from a unit force were determined as a series according to the first five particular Clebsch solutions. Experimental and numerical researches have been carried out. The latter – with the help of the MATHEMATICA computer program. The results obtained showed that the proposed calculation method allows one to accurately describe the distribution of settlements and reactive stresses under the slab. Verification of the methodology for static nonlinear calculation of a rectangular reinforced concrete slab, taking into account its physical nonlinearity, was carried out by comparing the results of calculations of maximum settlement and average pressures under the slab, obtained using the proposed methodology, and the results obtained using the layer-by-layer summation method and modern software systems Lira and PLAXIS 3D.
Comprehensive Study on Ultra-Heavy Oil Deposition in North Kuwait and Successful Fluid Sampling for Field Development Studies: Case Study
Authors: Bodoor Baroon , Jesudian David Nelson , Al-Otaibi Basel , Ibrahim Hossam , Chao Chen , Le Viet , Ghruda Ahmed , Sofiance _
Published: April 2023

The Burgan reservoir is located in North Kuwait was discovered in 1957. First commercial oil production from this multistack sandstone reservoir started back in 1964. Operating under active bottom water drive as well as edge water drive. The primary reservoir in the field is Burgan of Lower Cretaceous age, which contributes the major oil production of the fields.

Burgan reservoir is the second largest reservoir in terms of STOOIP and reserves, producing 30% of daily oil production. Significant amount of historical production came from the lower part of the reservoir where the pattern of water influx is well understood. Most of the historical production and the majority of remaining reserves are in the upper part of the reservoir where the pressure support and water influx are relatively well understood.

Presence of tar was initially detected from cores and produced oil in some of the wells and visual inspection of core material. Tar zone in the Burgan was considered to be structurally controlled and occurred in specific depth window around oil-water contact. Heavy oil has been discovered in basal parts of Burgan sandstone in some of the zones within North Kuwait. Development of Burgan in north Kuwait began in the 1950s with oil recovery since then from Burgan channel sands with few exceptions in the North Kuwait as samples confirmed ultra-heavy oil.