bluuebunny/crossref_metadata_2025 huggingface dataset:
Process Related Characteristic-Based Topography Evaluation of Wear Conditions On Grinding Wheels
Authors: Strug Maikel , Denkena Berend , Breidenstein Bernd , Krödel-Worbes Alexander
Published: November 2021

Non-productive auxiliary processes affect the single part and small badge production of milling tools. The key production process grinding is inevitably linked to the auxiliary conditioning process. The time demand of those process steps decreases the overall productivity of the manufacturing process. However, today the machine operator decides on conditioning cycles individually by the use of experience. Until today, there is no objective data based approach available that supports the initiation of these conditioning processes or the adaption of the grinding process itself in order to improve its process efficiency. For this purpose, a process related topography evaluation method of the grinding wheel surface is developed within this study. For the measurement an optical method based on laser triangulation is used. The measurement system is implemented into a common tool grinding machine tool. In addition, characteristic topography values are defined that show the wear conditions of the grinding tool. Moreover, the data is summarized in a database of wear conditions. The developed measurement method can save grinding and dressing tool resources, process times and minimizes scrap parts. In addition, an adaptation of the process and a targeted launch of auxiliary processes can be enabled. The novel characteristic-based topography measurement creates the opportunity to enhance the tool life of the grinding wheels up to 30 % without losing productivity.
Operational Behavior of Graded Diamond Grinding Wheels For End Mill Cutter Machining
Authors: Denkena Berend , Bergmann Benjamin , Raffalt Daniel
Published: November 2021

The varying related material removal rate during deep grinding of cemented carbide end mill cutters results in an unevenly wear of the grinding wheel. This causes a reduced geometrical precision of the manufactured tools. Consequently, the intervals between dressing steps are reduced and the dressing infeed increases. The aim of this research project is therefore to design a tailored grinding tool with uniform wear behavior. To address this situation, the grinding tool load is determined simulatively along the width of the grinding wheel. From this an equation is derived to adapt the bonding layer properties to the local load differences. First investigations show that two different concentrations zones in the abrasive layer of the grinding wheel improves the wear behavior already. This indicates that a further reduction of the wear difference is possible by a more uniform gradient. A simulation is performed to define a knowledge based gradient with more than two concetration zones. This allows a more precise load optimized adaptation of the grinding layer properties to the geometry to be ground in terms of wear behavior. Grinding tools manufactured on this basis are used for flute grinding of end mill cutters. A reduction of the wear difference over the grindig wheel width of 52% and an improved cutting edge quality of these are demonstrated.
Comparison of The Electrophysiological Characteristics of Tight Filum Terminale And Tethered Cord Syndrome
Authors: Kamei Naosuke , Nakamae Toshio , Nakanishi Kazuyoshi , Morisako Taiki , Harada Takahiro , Maruyama Toshiaki , Adachi Nobuo
Published: November 2021

This study aims to characterize tight filum terminale (TFT) in motor evoked potential (MEP) testing by comparing TFT patients with both tether cord syndrome (TCS) patients and healthy subjects. Fifty TFT patients, 18 TCS patients, and 35 healthy volunteers participated in this study. We recorded MEPs following transcranial magnetic stimulation from the bilateral abductor hallucis muscles as well as compound muscle action potentials and F-waves evoked by electrical stimulation of the tibial nerve from the bilateral abductor pollicis brevis muscles. The peripheral conduction time (PCT) was calculated from the latency of the compound action potential and F-wave. Furthermore, the central motor conduction time (CMCT) was calculated by subtracting PCT from MEP latency. TFT and TCS patients had a significantly longer MEP latency than healthy subjects. PCT in TFT patients were significantly longer than those in TCS patients or healthy subjects. Using the cut-off values for PCT, we were able to diagnose patients with TFT patients with a sensitivity of 72.0% and a specificity of 91.4%. Prolonged PCT in the MEP test may be a useful indicator for TFT and suggests that MEP may be used as an adjunct diagnostic tool for TFT.
Oncogenic RAS Generates Cancer Stem Cells in p53-Deficient Fibroblasts Through SOX2 Induced By CDK1-Mediated Protein O-GlcNAcylation
Authors: Shimizu Masahiro , Shibuya Hiroshi , Tanaka Nobuyuki
Published: November 2021

Cancer stem cells (CSCs) have tumour initiation, self-renewal, and long-term tumour repopulation properties, and it is postulated that differentiated somatic cells can be reprogrammed to CSCs by oncogenic signals. We previously showed that oncogenic HRASV12 conferred tumour initiation capacity in tumour suppressor p53-deficient (p53−/−) primary mouse embryonic fibroblasts (MEFs) through transcription factor NF-κB-mediated enhancement of glucose uptake; however, the underlying mechanisms of RAS oncogene-induced CSC reprogramming have not been elucidated. Here, we found that the expression of the reprogramming factor SOX2 was induced by HRASV12 in p53−/− MEFs. Moreover, gene knockout studies revealed that SOX2 is an essential factor for the generation of CSCs by HRASV12 in mouse and human fibroblasts. We demonstrated that HRASV12-induced cyclin-dependent kinase 1 (CDK1) activity and subsequent enhancement of protein O-GlcNAcylation were required for SOX2 induction and CSC generation in these fibroblasts and cancer cell lines containing RAS mutations. Moreover, the CDK inhibitor dinaciclib and O-GlcNAcylation inhibitor OSMI1 reduced the number of CSCs derived from these cells. Taken together, our results reveal a signalling pathway and mechanism for CSC generation by oncogenic RAS and suggest the possibility that this signalling pathway is a therapeutic target for CSCs.
The Role of MicroRNA-155 in Glomerular Endothelial Cell Injury of Diabetic Nephropathy
Authors: He Kaiying , Chen Zhan , Zhao Jing , He Yang , Deng Rongrong , Fan Xin , Zhou Xiaochun , Wang Jianqin
Published: November 2021

Objective: To investigate the role of microRNA-155-5p (miR-155-5p) on apoptosis and inflammatory response in human glomerular endothelial cells (HRGEC) cultured with high glucose.Methods: The primary human glomerular endothelial cells (HRGEC) were studied, QPCR, WB , IF were used to detect cell morphology, target gene ETS-1 (ETS-1), downstream factors VCAM-1 and MCP-1, and apoptosis of cells in each group after high glucose stimulation and transfection with miR-155 overexpression or inhibitor.Results:1.The expression of inflammatory factors and apoptosis of HRGEC cells increased under high glucose stimulation.2.The overexpression of miR-155 in HRGEC cells under high glucose stimulation decreased the expression of ETS-1, while the expression of ETS-1 increased when miR-155 was inhibited. These results suggest that miR-155 may be involved in endothelial cell injury by negatively regulating the expression of ETS-1.3.HRGEC cells were transfected with miR-155 mimic and ETS-1 siRNA with high glucose stimulation. The expression of ETS-1 was positively correlated with the expression of downstream factors VCAM-1 and MCP-1. These results suggest that ETS-1 can mediate endothelial cell inflammation by regulating VCAM-1 and MCP-1.
Evolution Behaviour of Kink Breathers and Lump-M-Solitons (M → ∞) for the (3+1)-Dimensional Hirota-Satsuma-Ito-Like Equation
Authors: Li Long-Xing
Published: November 2021

In this paper, some novel lump solutions and interaction phenomenon between lump and kink M-soliton are investigated. Firstly, we study the evolution and degeneration behaviour of kink breather wave solution with difffferent forms for the (3+1)-dimensional Hirota-Satsuma-Ito-like equation by symbolic computation and Hirota bilinear form. In the process of degeneration of breather waves, some novel lump solutions are derived by the limit method. In addition, M-fifissionable soliton and the interaction phenomenon between lump solutions and kink M-solitons (lump-M-solitons) are investigated, the theorem and corollary about the conditions for the existence of the interaction phenomenon are given and proved further. The lump-M-solitons with difffferent types is studied to illustrate the correctness and availability of the given theorem and corollary, such as lump-cos type, lump-cosh-exponential type, lump cosh-cos-cosh type. Several three-dimensional fifigures are drawn to better depict the nonlinear dynamic behaviours including the oscillation of breather wave, the emergence of lump, the evolution behaviour of fission and fusion of lump-M-solitons and so on.
Co-expression Effect of LLCL2 and SLC7A5 to Predict Prognosis in ERα-Positive Breast Cancer
Authors: Hisada Tomoka , Kondo Naoto , Wanifuchi-Endo Yumi , Osaga Satoshi , Fujita Takashi , Asano Tomoko , Uemoto Yasuaki , Nishikawa Sayaka , Katagiri Yusuke , Terada Mitsuo , Kato Akiko , Sugiura Hiroshi , Okuda Katsuhiro , Kato Hiroyuki , Komura Masayuki , Morita Satoshi , Takahashi Satoru , Toyama Tatsuya
Published: November 2021

Lethal giant larvae homolog 2 (LLGL2) and solute carrier family 7 member 5 (SLC7A5) have been reported to be involved in resistance to endocrine therapy. This study aimed to assess the effects of LLGL2/SLC7A5 co-expression in predicting prognosis and response to endocrine therapy in ERα-positive breast cancer patients by using LLGL2/SLC7A5 mRNA and protein expression in long-term follow-up invasive breast cancer tissues. We identified that low LLGL2/SLC7A5 mRNA co-expression (LLGL2low/SLC7A5low) was associated with disease-free survival (DFS) compared with other combination groups in all breast cancer patients. In ERα-positive breast cancer patients, LLGL2low/SLC7A5low showed longer DFS and overall survival (OS) compared with LLGL2high/SLC7A5high and a positive trend of longer survival compared with other combination groups. We also observed that LLGL2low/SLC7A5low showed longer survival compared with LLGL2high/SLC7A5high in ERα-positive breast cancer patients receiving adjuvant tamoxifen therapy. Multivariate analysis demonstrated that LLGL2low/SLC7A5low was an independent favorable prognostic factor of both DFS and OS, not only in all breast cancer patients, but also in ERα-positive breast cancer patients. High co-expression of LLGL2 and SLC7A5 protein showed a positive trend of shorter survival. Our study showed that co-expression of LLGL2 and SLC7A5 mRNA is a promising candidate biomarker in early breast cancer patients.
A Precursory Signal of the Central Pacific El Niño Event: Eastern Pacific Cooling Mode
Authors: Lingjiang Tao , Wansuo Duan
Published: November 2021

In recent decades, the tropical Pacific frequently experiences a new type of El Niño with warming center in the central tropical Pacific (i.e., the CP-El Niño) with distinct global climate effect to the traditional El Niño (i.e., EP-El Niño). Predicting the El Niño diversity is still a huge challenge for climatologists partly due to the precursory signals of El Niño events with different type is unclear. In the present study, a novel precursory signal that presents a negative sea surface temperature anomaly in the eastern tropical Pacific (i.e., EP-cooling mode) is revealed, which tends to evolve into a CP-El Niño event. The transition from the EP-cooling mode to CP-El Niño is explained by the basin-scale air-sea coupling in the tropical Pacific and teleconnections between the tropical and North Pacific. With the EP-cooling mode as a predictor, the forecast skill for the CP-El Niño in hindcast experiments is obviously improved by using regression models. The results in the present study are therefore instructive for promoting a better understanding of El Niño diversity and predictability.
Female Characters in Doctor Zhivago and Their Role in the Fate of the Protagonist
Authors:   Novosibirsk State University, Nure Jannat ,   Noakhali Science and Technology University
Published: November 2021

The article attempts to compare the three female characters in the novel Doctor Zhivago to identify their role in the formation of the psychological image of the main character, as well as their main functions as characters in the plot structure of the novel. Distinguishing the terms “character” and “hero” as theoretical concepts, we seek to establish the complementarity of two methods: character analysis as a way of structuring the text, on the one hand, and phenomenological, which allows us to capture the uniqueness of a single hero, as well as its influence on the fate of other participants in the action. Taking into account the long-term work on Doctor Zhivago, the author of the article proceeds from the idea that along with autobiographical material in the characterization of three women – Tonya, Larisa, and Marina, B. Pasternak widely uses plot analogies with masterpieces of Russian and world literature, as well as certain allusions to biblical images. Important here is the principle of inseparability and non-confusion in the depiction of the fates of the three women in their relationship with the main character, associated with the Christian tradition. For the first time, the article introduces the essentiality– existentiality opposition to compare the main female figures. At the same time, it is important that the author, creating female images, uses a different measure of fabulousness associated with the vicissitudes in the life of the main character – the maximum in the relationship of Yuri and Lara and the minimum in relation to the hero with Marina. There is also a different degree of detail of the three images, the use of symbols in their characterization, and the symbolization as the main method of Marina’s characterization is noted. The author concludes that the outstanding Russian poet and novelist B. Pasternak shows a high degree of skill, penetrating the depths of female psychology. At the same time, while maintaining the principles of construction characteristic of the classical narrative, the writer, thanks to the special arrangement of the material, gives the novel features that bring it closer to the best examples of world literature of the twentieth century.
Stories of the East in the Context of Artistic Ethnography by V. Mart of the Soviet Period
Authors:   Amur State University, Anna A. Zabiyako , Kseniya A. Zemlyanskaya ,   Amur State University
Published: November 2021

The relevance of the research is determined by the interest of modern literary criticism in the methodological paradigms of studying texts of artistic and ethnographic content in thematic, genre-stylistic, receptive aspects. The novelty lies in the source study, textual, genre-stylistic analysis of the unpublished collection Stories of the East by V. Mart. The research problem lies in the poetological reconstruction of the history of the creative failure of the opportunist literate writer in the Soviet literature at the beginning of the 1930s. The research methodology is based on genre-stylistic, structural-semantic analysis, source analysis of manuscript texts from the point of view of their ethnographic orientation. Based on the experience of research published in the USSR and works of artistic ethnography of the writer, the authors establish the typological features of the artistic strategy by V. Mart. Research methods: historical and literary, structural and semantic, source analysis, mythological reconstructions. The authors state that the unifying principle of V. Mart’s collection Stories of the East is his “old-fashioned” attitude. It turned out that V. Mart collected variations of previously published “oriental” stories and only a few completely new works (Indian, Japanese, Korean, Chinese themes) into a single artistic space. When creating them, he mainly used typological techniques used in previous publications of the Soviet period: the contamination of traditional mythological plots and revolutionary maxims, the transposition of foreign cultural realities into Russian reality, simplified linguistic, ethnocultural, mythological commentaries, etc. The authors of the article came to the conclusion that the collection was compiled in the early 1930s; at the same time, neither artistic flaws nor problems with the reliability of the ethnographic material became the reason for the rejection of the manuscript for publication. Factography in depicting revolutionary events in China and other countries of the late 1920s played the fatal role of anachronism in the early 1930s, when the situation in the Northeast and Southeast Asia changed dramatically. The ethnographic “true stories” of Mart put together became convincing “sabotage” evidence of the defeat of the revolutionary movement in the East and the strategic mistakes of Soviet diplomacy in the region.
Motivating Signs of the Student Concept
Authors:   Kyrgyz-Russian Slavic University, Marina G. Iurchenko
Published: November 2021

The article analyzes the dictionary entries “student” presented in the etymological and historical-etymological dictionaries of the Russian language. The purpose of the article is to determine and describe the motivating signs of the student concept according to the methodology of conceptual analysis of the mental formation structure. The article uses methods: conceptual analysis, descriptive and interpretative. The relevance of the stated topic lies in the correlation of the primary signs of the student concept with its conceptual signs. The scientific novelty of the work consists in the first experience of describing the motivating signs of the student concept. Fifteen dictionaries and discourse material of the Russian National Corpus were analyzed. The analysis of the concept revealed 11 motivating signs. The number of motivating signs indicates the great importance of the considering mental formation: the education sector is important for Russian linguoculture. The identified signs are combined into six blocks: 1. Educational process participants (“learner”, “higher school student”, “student”, “skudent”). 2. Affiliation (“student-led”, “student community”). 3. Effort (“work hard”/”endeavor”, “study diligently”, “study thoroughly”). 4. Ambition (“be anxious for success”). 5. Place of studying (“studio”). 6. The process of studying (“study/practice/train”). In the course of the student concept development there was practically no narrowing of the motivating signs, which retained their relevance and became the conceptual signs. There are 10 out 11 motivating signs have been preserved in the modern linguistic picture of the world.
‹Dann sind die Menschen Spielbälle der Konzerne›
Authors: Galanamatis Britta , Grell Petra
Published: November 2021

Lehrpersonen, die digitale Technologien im Unterricht verwenden wollen, benötigen Kenntnisse und Fähigkeiten bezüglich des Umgangs mit Daten, den Produkten ihrer Verarbeitung sowie diverse rechtliche Kenntnisse mit Bezug auf Daten- und Privatheitsschutz. Sie haben zudem eine Fürsorge- und Obhutspflicht und sollen Kompetenzen vermitteln, Privatsphäre in digitalen Umgebungen durch geeignete Massnahmen zu sichern. Mit dem Einzug von digitalen Technologien auf das Schulgelände und in die Unterrichtsräume ergibt sich für Akteurinnen und Akteure auf digitalen Märkten ein neuer Spielraum. In und ausserhalb der Schule sind Vernetzung, Datafizierung und Kommerzialisierung allgegenwärtig. Die Perspektiven von Verantwortungstragenden auf die Privatheit der ihnen anvertrauten Personen ist derzeit noch nicht ausreichend erforscht. In einer qualitativen Interviewstudie untersuchten wir, wie Lehrpersonen die Privatheit ihrer Schülerinnen und Schüler konzeptualisieren. Die Ergebnisse sind divers und zeigen teils ein geringes Bewusstsein für den monetären Wert von Daten. Lehrpersonen fühlen sich strukturell im Blick auf Rahmenbedingungen und Fortbildungsangebote zu Privatheit und Datenschutz nicht ausreichend unterstützt oder abgesichert. Trotz unterschiedlicher Privatheitskonzepte findet sich ein Hauptmotiv: ein Widerspruch zwischen dem pädagogischen bzw. persönlichen Ideal und der (vermuteten) Datenrealität bzw. dem vermeintlich pragmatischen Einsatz digitaler Medien im Unterricht.
Power Flow Control in Distributed Generation System of PFC Rectifier for DC Motor Drive
Authors: Maloth Naresh
Published: November 2021

In this paper is to performance and analysis of grid connected power flow control and power quality improvement in distribution generation (DG) system a new topology of harmonic injection current, connected for a grid mode and DC motor drive. Inherently the system power factor is low and it has high harmonic content in the current. The Swiss rectifier is based on harmonic current injection methods on power flow control and implementation of Power factor correction (PFC), Rectifier, the harmonic mitigating pulse width modulation (PWM) technique have been used to reduce the harmonics for power quality improvement. The renewable sources have been used as DC source and control technique has been used with step up DC-DC converter to regulate DC-link voltage. The second close loop control has been done for voltage source inverter to stabilize its terminal voltage. The DC-AC converter provides the bidirectional power flow between point of common coupling (PCC) and local load. The step up converter regulates the DC link voltage to exchange the power with the three phase feeders, also it is conformed the harmonic current can be satisfied with the proposed method. The simulation Study is performed in MATLAB/ SIMULINK.
A first approach of the seaborne bulk trade future
Authors: R. Boşneagu
Published: November 2021

Bulk goods trade has a large share in the world economy, this paper analyzes the perspective, the quantity and the main types of bulk goods carried at sea concerning the evolution of the world economy. Bulk carriers are in continuous development. Often these vessels transport cargo in only one way, which is economically disadvantageous. An advantage of these vessels is that they can operate with their equipment in the case of ports without specific facilities for handling bulk cargo. Port terminals for bulk cargo are a key factor in the evolution of this industry. Currently, these terminals are equipped with cranes and fast-paced installations and with specialized personnel who often work throughout the day. Emphasis is placed on the fast operation of the ships, but at the same time, the safety of the people is taken into account in such a way that things run smoothly.
The exact and asymptotically value of the failure rate of a parallel system
Authors: P. Vasiliu
Published: November 2021

The problem of determining the failure rate of a series system according to the failure rates of the component elements is solved in the literature, a reference in the field being the work [4]. There is no direct relationship between the failure rate of a parallel system and the failure rates of the component elements. In this paper we will deduce an exact relation between the failure rate of a parallel system and the failure rates of the component elements, their reliability and the reliability of the system. Starting from the exact relationship we will deduce a simpler relation of the failure rate of a parallel system by studying the asymptotic failure rate behavior.
Marine Meteorology - English versus Romanian Terminology in the 18th -19th centuries
Authors: A. Balagiu
Published: November 2021

The marine meteorology, as a branch of meteorology, a science developed in the 18th and 19th century, has certain characteristics and its own terminology. Although words denoting natural phenomenon existed long before the science, a comparison between English and Romanian terminology in the 18th and 19th century is to establish the similarities and differences between words with the same meaning that entered the scientific vocabulary or were formed in the period mentioned.
A Friend in Need Is a Friend Indeed. Beware of False Friends,Though!
Authors: A. Sirbu
Published: November 2021

Have you ever been deceived by a friend? A very unpleasant feeling, indeed! This can happen with language learning - no, this does not mean that your fellow learners are malicious, but that sometimes a word means something completely different than you think it does based on your knowledge of other languages or of your mother tongue. When we learn a new language, we often encounter words that sound and/or look very similar to words of our own native language. If the languages are related, then it may even be that these words have a comparable meaning. Nevertheless, beware: even if a word sounds and/or looks like a word in your native language, it may mean something completely different. This article is meant as a follow-up piece of research on an adjacent aspect of the topic discussed about in the paper “Just How Much Is Too Much in the Ever Global Use of English?” [1] However, the topic is far too exhaustive to even hope it has been canvassed in one or two scientific papers. This is why the question posed in said article still remains: “Have we actually enriched Romanian by taking over English words and using them as such or have we merely depleted it of the purport of its very existence?
Bisphenol A in aquatic environments
Authors: I. Stoicescu
Published: November 2021

The present study describes the application of chromatographic techniques for the identification, separation and quantitative determination of Bisphenol A (BPA) used in water samples. BPA was separated and quantified by reversed-phase high performance liquid chromatography with diode-array detection (HPLC-DAD). Analytical separation was performed on C18 column, mobile phase containing acetonitrile: water (60:40, v/v) at a flow rate of 1.5 mL/min isocratic method and ultraviolet detection at 272 nm. A linear response (r=0.9956) was observed in the range of 20-200 μg/mL. The method presents repeatability. A rapid, simple and low cost method was developed to determine BPA in water samples and the results suggest that this method could be used as an alternative method for routine analysis of BPA in quality control.
Psychomotricity: The Body as Self-Expression
Authors: V. Ene-Voiculescu
Published: November 2021

The birth of psychomotricity, and the new interpretations that have been given to promote the healthy, harmonic development of the growing child.
The stretching importance for improving the performance of the naval pentathlon athletes
Authors: C. C. Olaru
Published: November 2021

Behind a ritual, stretching has long been used by all athletes, professional or amateur regardless of sports discipline, being practiced in various forms before or after the effort. Seen by most coaches and athletes as a true ritual, it has recently begun to be analysed by the researchers, and its role, considered beneficial, to be questioned for certain disciplined or for others.
Detecting the DDoS attack for SDN Controller
Authors: D. Glăvan
Published: November 2021

A Software Defined Network (SDN) is an architecture used to form agile and flexible networks. SDN's goal is to improve network control, allowing service providers to respond rapidly to changing requirements. In a SDN, an administrator or a network engineer can configure the traffic from a centralized control console without having to touch individual network switches. Due to the fact that the control plan is entered by SDN as a network manager, a Single of Failure Point (SPoF) is also introduced. If SDN can not be reached by network devices, the network will crash. Distributed Denial of service (DDoS) attack is a way to make SDN Controller inaccessible. In this paper are presented the potential vulnerabilities of SDN Controller that can be exploited for DDoS attack as well as the presence of methods of detection and attenuation of these attacks.
Aspects of human weaknesses in cyber security
Authors:   Military Technical Academy, Moinescu R.
Published: November 2021

Along with the development of information technology in recent years, awareness about the security of computer systems is also increasing. Because the human factor is often guilty of the vulnerabilities to which an information system is exposed, this paper will research and evaluate disparate attack vectors which are being utilized today to successfully exploit human weaknesses. We will also try to create a mechanism to mitigate against these attack vectors.
Considerations concerning the calculation of the reliability of deck systems
Authors: P. Vasiliu
Published: November 2021

As is well known, the calculation of the reliability of series and parallel systems is solved in the literature. To calculate the reliability of deck systems, methods based on the formula of Bayes are currently being used. In this paper we present a method of calculating the reliability of triangle-star systems and of transforming a triangle system into a star-type system that then leads to the calculation of the reliability of the deck systems.
The use of social media on board the ship: friend or foe?
Authors: I. S. Gheorghe
Published: November 2021

The present paper aims to analyze some of the implications of the use of social media on board the ships, from a holistic viewpoint. The widespread use of social media tools has started as a blessing, especially for seafarers, and has helped a lot in bridging the gap between family and work. However, the implications of the use of social media are only now starting to become apparent, as Internet access on board the ships has improved in the last decade, and is continuing to do so as we speak.
Hydrodynamic analysis and improvement of pontoon boats
Authors: K. T. Gürsel
Published: November 2021

This study is related to the design features of pontoon boats that enjoy an increasing market share in global recreational boat industry. In this investigation, a representative pontoon boat with three cylindrical buoyancy elements was taken as the model to be studied. Afterwards, the buoyancy elements were improved to optimize hydrodynamic properties using a computational fluid dynamics package. The objective functions were the total hydrodynamic resistance of the boat and the distribution of the turbulence viscosity and total pressure on the hulls. By means of the obtained results, the powering requirements were estimated both for a service speed and for a maximum speed as well as findings were discussed.
Managerial communication in english
Authors:   Mircea cel Batran Naval Academy, ALIBEC C
Published: November 2021

Communication is considered to be one of the most important tools in the process of management. Managerial communication explores what the managers do in business, meaning that managers use the communication system to plan, organize, direct and control activities and people. Management cannot function without the techniques of communication covered in managerial communication. Management students need to learn both analytic and communication skills in order to be successful both in the university and at work. For any communication in business, in order to be effective, it must have seven qualities, which are often called the seven C’s of business communication. The message is said to be effective when the receiver understands the same meaning that the sender was intended to convey. An effective system of communication facilitates job performance and promotes satisfaction among people.
Improvement of training in maritime safety aspect by the implementation of S-VDR capabilities
Authors: V. S. Vasilev
Published: November 2021

Education and training are essential parts of institutional efforts to ensure a safer maritime environment. The contemporary well-indicated trend shows that improvement of maritime safety and security is efficient in a virtual environment using simulations in training process. Simulations should be as much realistic as it is possible in order to increase benefits of training fulfilling IMO regulations and rules of national maritime authorities. Shipborne Simplified Voyage Data Recorders (S-VDRs) need to follow strict requirements of IMO regulations. Maritime safety committee`s resolutions concern the adoption of revised performance standards that are applicable in the training process. Standardized specialized data related to the ship`s safety that are gathered and stored in regard to competent investigation authorities would be useful for improvement trainees` practical skills and knowledge in advance.
Determination of performance criterion for conducting non-combatant evacuation operation (NEO)
Authors: N. Stoyanov
Published: November 2021

Evacuation operations are distinguished from other military operations mainly in the management of the operation, which is carried out with the close interaction of political and military factors, with the direct involvement of the diplomatic representation of the country whose citizens will be evacuated. Planning and organizing the participation of a military formations in NEOs should be based on a quantitative assessment of the expected results of their actions. The paper describes performance criterion for assessment of non-combatant evacuation operation.
Characterization of Globodera ellingtonae Populations from Chile Utilizing Whole Genome Sequencing
Authors: Hesse C.N. , Moreno I. , Acevedo Pardo O. , Pacheco Fuentes H. , Grenier E. , Dandurand L. M. , Zasada I. A.
Published: November 2021

Globodera ellingtonae was originally described from populations collected in the United States. In the original description, ribosomal DNA loci from Globodera sp. collected in Chile and Argentina were similar to G. ellingtonae, suggesting this nematode originated in this region of South America. In an effort to find additional populations of G. elllingtonae, collection trips were conducted in 2017 and 2020 in the Antofagasta and Arica y Parinacota Regions in Northern Chile, respectively. Globodera sp. were more prevalent in Antofagasta (17 samples collected, 53% positive for Globodera sp.) than in Arica y Parincota (16 samples collected, 13% positive for Globodera sp.). The genomes of single cysts (N ≥ 3) from four fields were sequenced. Additionally, the genomes of the G. ellingtonae population from Oregon and a Globodera sp. population originally collected in Antofagasta Region but maintained in culture in France were also sequenced. Based upon a HSP90 sequenced data mined from WSG data, all of the populations from the Antofagasta Region were G. ellingtonae and grouped in a monophyletic clade. A population collected from the Arica y Parincota Region was identified as G. rostochiensis based upon HSP90 data. Genome-wide SNP patterns of the G. ellingtonae populations showed strong clustering based on geographic location indicating that G. ellingtonae has high genetic diversity within Chile. A phylogenetic tree derived from 168,354 binary SNPs in the nuclear genome showed separate but distinct clustering of the Oregon population and the population from Antofagasta maintained in France. The Oregon G. ellingtonae population subtended the Chilean clades and placed on a long branch representing approximately twice the genetic variation observed among all Chilean G. ellingtonae populations. The possibility remains that G. ellingtonae from Chile may be sufficiently diverged to constitute a new species from G. ellingtonae originally described from a population collected in Oregon.
Announcement of WormAtlas partnership with the Journal of Nematology
Authors: Schroeder Nathan E. , Hall David H.
Published: November 2021

A detailed understanding of nematode anatomy can be leveraged for the development of new parasitic nematode control strategies and for fundamental biological insights through nematode model organisms. The Center for C. elegans Anatomy, with its websites WormAtlas and WormImage, is the central anatomical resource for researchers studying the model organism Caenorhabditis elegans. Here, we announce our expansion of the WormAtlas and WormImage resources beyond C. elegans to include additional nematode species. Towards this goal, we will partner with the Journal of Nematology to write and solicit anatomically focused review chapters for publication in the Journal and corresponding inclusion on the WormAtlas website.
A Comparative Analysis of Activated Carbons from African Teak (IROKO) Wood and Coconut Shell in Palm Oil Bleaching
Authors: Onwumelu Davidson C
Published: November 2021

This study compares the effectiveness of activated carbons from the African Teak/Iroko wood (Milicia excelsia) and coconut shell as adsorbents in Crude Palm Oil (CPO) bleaching. This was done to source for local agro-waste substitutes for the imported Fuller’s earth. The materials were activated using analytical grade CaCl2 in 25% solution at a temperature of 109OC in a laboratory hot air oven. The obtained activated carbon samples were subjected to proximate analysis to ascertain their percentage ash, moisture, volatile matter and fixed carbon contents. The CPO to be analyzed was degummed, neutralized and further bleached using 2g, 4g, 6g, 8g, 10g, 12g, and 14g of the adsorbent samples at a temperature of 130OC after which the obtained oils were analyzed and results plotted. It was observed that the bleached oil samples generally had reduced specific gravity, opacity, colour, and free fatty acid (FFA) compared to the CPO. It was also observed that while the opacity, colour, and FFA reduced as the adsorbent dosage increased, the specific gravity variation was irregular. Conversely, the percentage colour reduction and the percentage FFA reduction increased with adsorbent dosage. Overall, the oil samples bleached with activated carbon from the African Teak/Iroko wood exhibited more desirable properties than the oil samples bleached with the coconut shell activated carbon.
TIBIAL MALUNION WITH ANGULAR DEFORMITY MANAGED WITH CORRECTIVE OSTEOTOMY AND PHILOS PLATING IN A 15-YEAR MALE - CASE REPORT AND REVIEW OF LITERATURE
Authors: Supe Amit , Mhatre Jayesh , Modi Nihar
Published: November 2021

Tibia and fibula shaft fracture are common among young and old, if they are not managed correctly, can be debilitating in long term. Management of these fractures depends on severity,stability, and pattern of fracture. Options can range from conservative management by plate to external fixation, especially in the case of an open fracture. Unfortunately, the ideal fixation option (commonly used plate or nail) implant is not always available in operation theatre, in such circumstances closed reduction if not properly maintained can lead to malunion, especially in young age when healing is very rapid and such malunion can lead to early induced arthritis or many other complications1. here we discuss a case of 15-year-old male with a left distal tibia and fibula malunited fracture 11 monthsold, who presented with complaints of pain and deformity over distal 1/3 rd of right lower leg, patient required open reduction and internal fixation with 4-holePHILOS (PROXIMAL HUMERAL INTERNAL LOCKING SYSTEM) plate for tibia andLCP(Locking Compression Plate) plate for fibula. We conclude that in cases of distal tibia and fibula malunion when managed with open reduction internal fixation with osteotomy with PHILOSplating for deformity correction gives good result.
SCALPEL VERSUS DIODE LASER FOR GINGIVAL DEPIGMENTATION: A CASE REPORT
Authors: Mudassar Subuhi , Singh Soundarya , Kaushik Mayur , Khan Abrar
Published: November 2021

Gingival hyperpigmentation is believed to be a genetic trait in populations and is more appropriately termed physiologic or racial gingival pigmentation a condition, which affects all races differently. Gingival depigmentation is most frequently performed as an esthetic periodontal plastic surgical procedure. There are various procedures like scalpel, laser. Cryosurgery, diamond burs and chemical methods have been used in this procedure. This case report compares the efficacy of two techniques. Maxillary anterior region was treated with scalpel technique and the mandibular anterior region was treated using Diode Laser. Both the treatment modalities were effective in terms of patient acceptance. Scalpel depigmentation resulted in uneventful healing of the treated site. Laser depigmentation showed some beneficial effects like bloodless field during surgical procedure which healed uneventfully. Patient discomfort was more in laser treated site during the initial healing period as compared to scalpel.
A STUDY ON ONLINE CONSUMER BUYING BEHAVIOR DURING FESTIVAL SEASONS IN COIMBATORE CITY
Authors:   Principal and Guide, Department of Commerce, Pioneer College of Arts and Science, Coimbatore, India., Mahendran S. , Malathi K. ,   Ph.D. Research Scholar, Department of Commerce, Pioneer College of Arts and Science, Coimbatore, India.
Published: November 2021

Due to rapid development in technology, nowadays consumers use the Internet in many ways to take day-to-day decisions. For example, consumers are eager to seek reviews of others who purchased the goods earlier through various e-commerce sites while they purchase goods online. These days everything is available online and consumers are realising the importance of digitalisation and started purchasing through various online sites. The major shopping festivals in Tamilnadu are Pongal, Aadi Perukku, Onam, Ramzan, Bakrid, Diwali, Christmas, National festivals like Independence Day, Gandhi Jayanthi, Republic Day, and many more. During the Festival time, sales are the latest trend in contributing to the growth of online sales. All online marketing sites use festival time to promote their products and provide various attractive offers in order to push up their sales. This study is an attempt to understand the various factors that contribute highly towards festival spends which determine the purchase behaviour of consumers.
Genotype screening of Cannabis sativa L. based on the specifics of minor cannabinoids manifestation
Authors: Mishchenko S. V. , Kyrychenko H. I. , Laiko I. М.
Published: November 2021

Analysis of hemp collection samples based on the content of minor (rare) non-psychotropic cannabinoids, such as cannabichromene (CBC), cannabidivarin (CBDV), and cannabinol (CBN); determination of correlation relationships between them and common compounds; selection of valuable breeding genotypes.
Methods. Field, biochemical (gas chromatography of cannabinoid compounds), and statistical (pair, partial, and multiple linear correlations).
Results. Quantitative analysis of 210 samp­les of various ecological-geographical and genetic origin (local and wild forms, self-filing lines, hybrids, varieties, synthetic populations, polyploids) with a tetrahydrocannabinol (THC) content of less than 0.08% in dried plants showed the level of manifestation of the trait from its absence within the sensitivity of the gas chromatograph up to 0.6838% CBC, 0.1719% CBC and 0.3274% CBN. In the studied hemp samples, a medium negative relationship was found between the signs of the CBC and cannabidiol (CBD) contents (r = –0.53), a weak negative relationship between CBC and CBDV contents (r = –0.35), medium positive relationships between the signs of CBC and THC contents (r = 0.57) and CBC and CBN contents (r = 0.59). A medium positive correlation (r = 0.57) was found between the signs of CBDV and CBD contents, while CBN had a strong positive relationship with THC (r = 0.82). There is almost no correlation between cannabigerol (CBG) and the minor cannabinoids under study. The biosynthesis of minor cannabinoid compounds is quite complex. Signs manifestation is affected by many genetic and external factors. Partial correlation coefficients (given that one of the three signs is eliminated) and multiple correlation coefficients (given that the relationship of one sign is determined and two other signs are combined) give grounds to state that the gene for CBCA-synthase affects the production of CBD and, in particular THC.
Conclusions. The closeness of the linear relationships between minor cannabinoids and common components allows selecting valuable hemp samples with a high content of one or several compounds under the absence or low content of psychotropic THC.
Productivity and quality of tomatoes grown in low-volume hydroponics in glass greenhouses of "Venlo" type
Authors: Khareba O. V. , Tsyz O. M.
Published: November 2021

Purpose. To improve the elements of the technology for growing tomato hybrids by the method of low-volume hydroponics in glass greenhouses in the conditions of IV light zone of Ukraine. Conduct an economic and biological assessment and establish the response of new F1 tomato hybrids to environmental factors; study the dynamics of fruiting of F1 tomato hybrids and determine the most early-ripening and productive ones; determine influence of plant productivity on the dynamics of yield formation and tomato productivity when grown by the method of low-volume hydroponics in glass greenhouses; choose a method for the formation of grafted plants.
Methods. Laboratory production experiments were carried out during 2015–2017. In glass winter greenhouses of “Venlo” type in Private Joint Stock Company “Combine “Teplychnyi” (Kalynivka village, Brovary district, Kyiv region), located in IV light zone of Ukraine. Standard statistical me­t­hods were used to analyze the research results.
Results. The dynamics of yield growth and monthly yield under the influence of the methods of plant stem formation were analyzed. The studies were carried out during 2015–2017 in block hydro­ponic winter greenhouses of “Venlo” type. Yield analysis revealed the advantage of the option of forming two stems after the 3rd raceme on every second plant in the mat and after 9th one on every fourth plant in the mat. The obtained research results indicate a significant increase in the total yield with new methods of plant formation. The formation of two stems in plants after the 3rd raceme on every second plant and after 9th one on every fourth plant in the mat contributed to an increase in yield by 9.45 kg/m2 (or 16.9%), which will significantly increase the economic effect of the technology of growing greenhouse tomatoes. Analysis of the biochemical composition of tomatoes did not reveal significant diffe­rences between the variants with different methods of plant formation.
Conclusions. When growing a hybrid ‘Merlis F1’, it is advisable to apply the formation of plants according to the following scheme: in two stems after the 3rd raceme on every second plant in the mat and after the 9th one on every fourth plant in the mat. In this case, the plant bears maximum fruit, and high productivity of one plants, due to the formation of a larger number of fruits, provides a high early yield at the level of 31.7 kg/m2. The highest total yield on average over the years of research (65.3 kg/m2) was obtained when plants were formed in two stems after the 3rd raceme on every se­cond plant in the mat and after the 9th one on every fourth plant in the mat. Analysis of the biochemical composition did not reveal a significant difference between the variants.
Stimulasi Bermain Peran Bagi Keterlambatan Bicara Pada Anak Usia 3 Tahun
Authors: Faruq Asrul , Tejaningrum Dhiarti
Published: November 2021

Perkembanganbahasamerupakanbagianpentingbagianakusiadini. Bahasa merupakansaranakomunikasidancaraanakuntukmengekspresikandiri. Keterlambatankemampuanberbicaraanakakanmenghambataspektingkatpencapaianperkembangananak. Tingkat pencapaian perkembangan menggambarkan pertumbuhan dan perkembangan yang diharapkan dapat dicapai anak pada rentang waktu tertentu.Penelitianinibertujuanuntukmenganalisacaramengatasiketerlambatanbicarapadaanakusia 3 tahunmelaluistimulasi kegiatan main peran yang dilakukan di Safa Preschool Yogyakarta.Metode yang dilakukandalampenelitianiniadalahdenganmelalukanwawancaradanobservasi. Dengan stimulasi lebih dini diharapkan kemampuan bicara dan bahasa pada anak lebih optimal.