bluuebunny/crossref_metadata_2025 huggingface dataset:
Motivation at work: An analysis from the self-determination theory perspective
Authors: Guo Moyang
Published: December 2023

In the rapidly evolving organizational landscape of the 21st century, traditional motivational strategies are increasingly inadequate. This paper explores the application of Self-Determination Theory (SDT) as an alternative framework for understanding and enhancing employee motivation. Originating as a critique of traditional reward-punishment models, SDT focuses on fulfilling employees’ intrinsic psychological needs—autonomy, competence, and relatedness—to improve job satisfaction and organizational efficiency. The paper begins by tracing the historical development of work motivation theories, from scientific management to human relations theories, and positions SDT in this context. Using a combination of literature review and empirical analysis, including ANOVA and factor analysis, the study examines how SDT can be practically applied in the workplace. It discusses the benefits of autonomy, competence, and relatedness in increasing job satisfaction and performance, while also acknowledging the limitations and challenges of SDT, such as cultural variations and resource constraints. The paper concludes that SDT offers a robust, adaptable framework for modern organizations, with significant implications for future research and practice.
Gender stereotypes in help-giving and help-seeking
Authors: Xu XiaoJin
Published: December 2023

The study looked at how prosocial conduct is impacted by gender stereotypes, and it also explores the influence of gender stereotypes on women’s and men’s help-seeking behaviors. The findings suggest that gender stereotypes may act as barriers to prosocial behavior, which in turn affects how people help gender-specific groups. From the point of view mentioned, for the act of offering help, people should give the appropriate help according to the actual situation of the victim, without considering only their gender. This means discarding gender stereotypes and providing tailored help based on individual needs and circumstances. This philosophy can help people to see and solve problems more objectively in practice. These factors may affect people’s attitudes and behaviour towards victims of domestic violence and their need for help. Examining these issues can help researchers better understand gender dynamics in domestic violence and provide a reference for more effective support and help. In conclusion, gender stereotypes have some influence on prosocial behavior. Future research could further explore the impact of education level and cultural factors on gender stereotypes and prosocial behaviors in the circumstance of domestic violence to advance researchers’ knowledge and understanding of this area.
The Impact of Motivation on Academic Performance of Chinese College Students
Authors: Jiang Hui
Published: December 2023

The impact of motivation on the academic performance of Chinese college students is a topic of considerable research interest. This study employed a questionnaire survey to gather data and employed various statistical analysis techniques for data processing and interpretation. The study’s results unequivocally reveal that motivation exerts a significant influence on the academic achievements of Chinese college students. This impact encompasses a wide range of aspects, such as bolstering learning efficiency, establishing clear educational objectives, sustaining perseverance in learning, increasing engagement in the learning process, fostering a curiosity to explore knowledge, refining study habits, and augmenting overall learning capabilities. Consequently, it is imperative for educators to be mindful of students’ motivation levels, as they play a pivotal role in igniting their enthusiasm for learning. Educators should also provide appropriate support and encourage the cultivation of independent thinking and ambition. These research findings hold substantial implications for enhancing the academic performance of Chinese college students. Keywords: motivation, Chinese college students, academic performance, educators, guidance.
Influence of Family Relationships on Adolescent Students’ Interest in Learning
Authors: Ke Ziyu
Published: December 2023

Adolescence is an important stage that everyone goes through, and various researchers have never stopped studying adolescent students. The topic of this research is the influence of family relationships on adolescent students’ interest in learning. The research method of this paper is the literature review method, by reviewing the literature related to the three topic terms, to explore the changes of adolescent students’ interest in learning under different family relationships. According to the results of the study, in a good family relationship, there is a positive influence on adolescent students’ interest in learning, while in a poor family environment, there is a negative and bad influence on children’s interest in learning. It is found that family relationships have always played an important role in the development of students, and that interest in learning is only one of the aspects that family relationships can affect. Both parents and students need to make efforts to regulate these relationships.
Systemisches Denken, subjektive Befunde und das diagnostische „Schubladendenken“ bei ME/CFS – Eine vorwiegend qualitative Public-Health-Studie aus Patientensicht
Authors: Habermann-Horstmeier Lotte , Horstmeier Lukas Maximilian
Published: December 2023

Hintergrund ME/CFS (Myalgische Enzephalomyelitis/Chronisches Fatigue-Syndrom) ist eine vorwiegend als neuroimmunologische Multisystem-Erkrankung betrachtete Krankheit, die vielen Ärzt*innen in Deutschland noch immer unbekannt ist oder die von ihnen als psychosomatische Erkrankung eingeordnet wird. ME/CFS-Patient*innen berichten von den aus ihrer Sicht erheblichen Defiziten hinsichtlich der ärztlichen Behandlung und einer als problematisch empfundenen Arzt-Patienten-Beziehung (AP-Beziehung). Ziel der vorliegenden Studie ist es, aus Sicht der Betroffenen den Ablauf der Diagnosefindung als einen wichtigen Einflussfaktor auf die AP-Beziehung bei ME/CFS genauer zu analysieren.

Methode Im Rahmen eines explorativen qualitativen Surveys wurden 544 ME/CFS-Erkrankte (> 20 J.; 455 ♀, 89 ♂) mit ärztlicher ME/CFS-Diagnose schriftlich nach ihren Erfahrungen hinsichtlich des Ablaufs der Diagnosefindung befragt. Das Sampling erfolgte zuvor durch Selbstaktivierung und über das Schneeballprinzip. Der zu beantwortende Fragebogen war analog zu einem fokussierten, standardisierten Leitfadeninterview aufgebaut. Die Auswertung erfolgte im Rahmen einer qualitativen Inhaltsanalyse nach Mayring. Einige der Ergebnisse wurden anschließend quantifiziert.

Ergebnisse Die Proband*innen beschrieben den aus ihrer Sicht mangelhaften Ablauf der Diagnosefindung als zentralen Faktor einer problematischen AP-Beziehung bei ME/CFS. Sie berichteten von unzulänglichem Fachwissen, mangelnder Erfahrung im Umgang mit den Erkrankten und fehlender Fortbildungsbereitschaft der konsultierten Ärzt*innen. Viele Ärzt*innen stritten aus ihrer Sicht die Existenz von ME/CFS ab oder ordneten sie als rein psychosomatische Krankheit ein, beharrten auf ihrem Wissensstand, ignorierten das Patientenwissen und missachteten mitgebrachtes wissenschaftliches Informationsmaterial. Sie gingen nach „Standardprogramm“ vor, dachten in „Schubladen“ und seien unfähig zu systemischem Denken. Dies hätte erhebliche Auswirkungen auf die AP-Beziehung.

Diskussion Aus Sicht der ME/CFS-Erkrankten sind der Ablauf der Diagnosefindung und die Anerkennung von ME/CFS als neuroimmunologische Multisystem-Erkrankung die zentralen Aspekte einer von ihnen als problematisch erlebten AP-Beziehung. Bereits in der Vergangenheit wurden als „subjektiv“ klassifizierte und damit ignorierte Befunde, das für die biomedizinisch orientierte Medizin charakteristische diagnostische „Schubladendenken“ und ein Gesundheitssystem, das dem systemischen Denken bei der Diagnosefindung entgegensteht, als Faktoren identifiziert, die erheblichen Einfluss auf das AP-Verhältnis haben können.
Mentalities, classes and the four lines of conflict in the social-ecological transformation
Authors: Fritz Martin , Eversberg Dennis
Published: December 2023

In this article, we argue that current societal struggles about whether and how eco-social policy and politics should be implemented to tackle the interlinked challenges of climate change and inequality are an expression of the main societal conflict of our times: the social-ecological transformation conflict. We identify four lines of conflict in the social-ecological transformation and explore how they are related to classes and mentalities. In the theoretical part, we conceptualize classes in social space and mentalities through a Bourdieusian relational approach. We also discuss the location of the four lines of conflict in social space. In the empirical part, we analyze survey data from Germany. Firstly, we find eight mentalities among respondents reflecting their views on various eco-social topics. Secondly, we construct the social space with socio-economic variables for the economic and cultural capital of the respondents. Thirdly, we plot the mentalities in the social space. The results show that the cultural middle class is in favor of eco-social policy, while the upper class and the economic middle class prefer green growth and ecological modernization. The lower-class fractions are skeptical of any transformation because they distrust institutions and cannot bear the transformation costs.
Problems with universal metrics
Authors: Zhan Bo
Published: December 2023

This paper aims to examine the problem of universal metrics developed with English sonnets by analyzing meter in
Japanese haiku and Chinese recent-style verse.1 Following Martin (2007), In this study, a haiku is defined as a traditional form of Japanese poetry consisting of three lines,
typically with seventeen metrical units per verse arranged in a pattern of five, seven, and five units per line. The data reveals
that a system with metrical prominence cannot be applied to Chinese and Japanese metrical verse since linguistic prominence is
missing in both languages. The only common feature shared among the metrical systems of the three languages is the existence of a
contrast between two types of syllables that belong to opposite classes. However, this contrast only applies in limited situations
in the Japanese case. Lastly, instead of a universal metrical structure, the data suggests that the metrical structure in the
three languages should be distinguished.
Conformally symmetric wormhole solutions supported by non-commutative geometry in
f(Q,T)
gravity
Authors: Chalavadi Chaitra Chooda , Venkatesha V , Kavya N S , Rashmi S V Divya
Published: December 2023

This paper investigates wormhole solutions within the framework of extended symmetric teleparallel gravity, incorporating non-commutative geometry, and conformal symmetries. To achieve this, we examine the linear wormhole model with anisotropic fluid under Gaussian and Lorentzian distributions. The primary objective is to derive wormhole solutions while considering the influence of the shape function on model parameters under Gaussian and Lorentzian distributions. The resulting shape function satisfies all the necessary conditions for a traversable wormhole. Furthermore, we analyze the characteristics of the energy conditions and provide a detailed graphical discussion of the matter contents via energy conditions. Additionally, we explore the effect of anisotropy under Gaussian and Lorentzian distributions. Finally, we present our conclusions based on the obtained results.
Study and characterization of L–arginine halides (HCl/HBr)
Authors: Sukiasyan R P , Danghyan A A , Apreyan R A , Atanesyan A K
Published: December 2023

The systems of L-arginine with halogen acids (hydrochloric and hydrobromic) in water solvent under the influence of acoustic waves and without them were investigated in this study. Nine compounds were obtained and identified: (I) L-arginine hydrobromide, (II) L-arginine hydrochloride (space group P1), (III) L-arginine hydrobromide, (IV) L-arginine hydrochloride (sp. gr. P21), (V) L-arginine hydrobromide monohydrate (sp. gr. P21), (VI) L-arginine hydrochloride monohydrate (sp. gr. P21), (VII) L-arginine dihydrobromide monohydrate (sp. gr. P1), (VIII) L-arginine dihydrochloride monohydrate (sp. gr. P212121) and (IX) L-arginine dihydrochloride (sp. gr. P21), of which (I), (III) and (IX) crystals were obtained and studied for the first time. The conditions for the formation of all the compounds were described. The FT-IR ATR spectra of obtained crystals were presented and compared. Based on the IR spectra, it can be assumed that the crystals of (II) and (I) are isostructural, the same for (IV) and (III). The crystal and molecular structure of L-arginine dihydrochloride (sp. gr. P21) was studied by X-ray diffraction method. Thermal and other properties were investigated. The efficiency of the second harmonic generation of all the crystals was measured and compared with that of the KDP.
X-ray study of structural changes in “di-(2-ethylhexyl) sulfosuccinic acid (AOT) /n-heptane-water” liquid crystalline system depending on the concentration of components
Authors: Sargsyan A G , Grigoryan S M
Published: December 2023

Structural changes in the “sodium salt of di-(2-ethylhexyl)sulfosuccinic acid (AOT) - n-heptane-water” liquid-crystalline system depending on the AOT concentration in the n-heptane-water mixed solvent were studied using the X-ray diffraction method. The studies were carried out in a wide range of the AOT concentrations from 27 to 92% in a mixed solvent n-heptane/water=5.8 ratio.The mesomorphism of a liquid-crystalline system is on the concentration of the system. It is confirmed that at concentrations the AOT above 50%, a liquid crystal structure with an intradomain "flat" liquid crystal layered phase takes place. A “flat” lamellar lyotropic-liquid-crystalline phase with an intradomain lamellar structure is formed in the system. The structural parameters, the compactness of the liquid crystal system, the thickness of the formed layers, the surface area per molecular head on the surface of the layers depending on the concentration and thickness of the bound water layer are revealed. The liquid crystal system under study can serve as a model for studying various problems of biological membranes.
Features of operation and calculation of the light modulator-demodulator (modem) on electro-optical crystals
Authors: Hayrapetyan Y , Hunanyan H
Published: December 2023

In order to determine the size of the resonator of the light modulator in the microwave range, options for calculating resonators by existing methods are considered and evaluated. An empirical formula for calculating resonators is proposed, which gives very close results with actually working resonators. The question of evaluating the Q-factor of the modulator is also considered. It is proposed to introduce a coefficient that also takes into account the quality of the resonator processing in order to more accurately determine the Q-factor of the light modulator.
Design and Implementation of Power Big Data Platform
Authors: Zhao Zongluo , Li Qiangqiang , Zhao Zhixin , Zhang Haida , Han Qianqian , Ju Xiaoming
Published: December 2023

In recent years, with the advancement of the national construction of smart grid and the development of power grid enterprise integration system, the traditional power data platform has some defect, such as insufficient scalability, repeated implementation of two sets of logic of off-line data warehouse and real-time data warehouse, highly correlated storage of data warehouse during computation, and difficulty in platform migration, which restrict the deeper mining and analysis of power big data. Therefore, this paper adopts a technical architecture incorporating distributed calculating, micro-service, flow-batch integration and lake-warehouse integration, combining the current popular Web front-end and back-end technologies such as Vue, SpringCloud and Flask, and utilizing big data components such as Hadoop, Flink, Hudi and Kafka as well as Docker containerization technology. We explore and build a power grid system operation oriented big data platform that assembles real-time computing, multi-source heterogeneous data storage, and develop APIs for authority management, information management, data analysis and visualization, machine learning and other data supporting services that assist power enterprises in managing electrical equipment and users’ power consumption.With the help of this platform, power enterprises can intelligently track the equipment status, view the offline and real-time visual charts to analyze the power consumption by users, so as to have better basis in the power dispatching, maintenance and scheme adjustment of electrical market.
Fault Status Monitoring of Power Metering and Detection Equipment Based on BiLSTM
Authors: Yao Zhicong , Zhao Binghui , Zhang Ke , Pan Wei
Published: December 2023

The power metering and detection equipment is a device used to measure the power consumption of users and energy loss of power lines. It is of great significance to timely identify and handle operational anomalies of electric power metering and detection equipment to ensure stable and reliable operation of the metering device. In response to the problems of low accuracy and poor robustness in existing fault diagnosis methods for electric power metering and detection equipment, this paper proposes an intelligent fault diagnosis method based on deep learning. The paper combines the characteristics of convolutional neural network (CNN) and bidirectional long short-term memory (BiLSTM) in extracting local and global features, and combines them with self-attention (SA) mechanism to propose a hybrid network model SA-CNN-BiLSTM for monitoring the status of electric power metering and detection equipment. This model first extracts local information through the CNN network. At the same time, BiLSTM can extract global features, and then the feature fusion layer combines these two different features. Then, the self-attention mechanism weight adjustment layer is used to calculate and adjust the weights of the fused feature vectors. Finally, the fused feature vectors are input into the fully connected layer, and fault classification predictions are obtained through a softmax classifier. System experiments have demonstrated the correctness and effectiveness of this method.
Machine learning-based fault diagnosis for high-voltage transmission lines
Authors: Sheng Zunhua , Zhang Kai
Published: December 2023

In order to comply with the speed and diversification process of human economic and technological development, the power system gradually develops in the direction of intelligence and complexity, and it is urgent to combine transmission line fault diagnosis methods with machine learning pattern recognition problems in order to reflect the representative characteristics of transmission lines under different operating conditions and different operation modes. In this paper, a convolutional neural network (CNN) model is established for transmission line fault diagnosis, and a series of parameters such as weights, bias, learning rate, batch size and loss function of the proposed CNN model are debugged through experimental comparison, and the best CNN model structure is determined through experimental comparison and debugging, and the recognition accuracy is higher than other traditional machine learning algorithms, which can be as high as 98.38%, with validity, practicality and advancedness.
Trade-offs between forest carbon sinks and multidimensional forest values: from assessment to management strategies
Authors: Sun Ziliang , Zhou Yu
Published: December 2023

Forests are one of the subjects that can effectively mitigate climate change and are important for achieving carbon sequestration. In order to determine the maximum carbon sequestration of forests and the optimal management mode, this paper selected several indicators related to forest carbon sequestration and determined the main influencing indicators and mechanisms through regression significance analysis, and concluded that the selection of forest age and harvesting intensity have an important influence on the carbon sequestration effect and sustainability of forests. Based on the above analysis, we constructed a model of logging intensity and forest carbon sequestration, and brought in the forest data of each province to arrive at the optimal logging intensity of 23%-30%. Second, in order to determine the optimal comprehensive benefits of forests, this paper extends the model to consider forest values in more dimensions and determine the corresponding indicators, and uses the entropy weight method to determine their contribution rates to construct a comprehensive forest evaluation model. Using this model, this study measures and analyzes the Changbai Mountain forest area and Hainan forest area, and then derives the corresponding forest management strategies to maximize their comprehensive benefits.
Intelligent Decision Support System for Building Project Management Based on Artificial Intelligence
Authors: Wang Jianqiao
Published: December 2023

With the deepening of research on artificial intelligence (AI) technology in the field of computer science and the improvement of its social influence, the effective combination of AI technology and engineering project management practice has become a hot topic of discussion in the field of engineering project management. In the application research of AI in engineering project management, most of them use data-driven models to solve project management problems, improve data insight and improve the speed and quality of project management decision-making. Decision support systems have been developed on the basis of management information systems, but they have rarely been successfully applied in project management. The decision support system based on data warehouse is a new level of development in decision support systems, providing an effective way for projects to achieve real-time decision-making, thereby achieving synchronous, integrated, and optimized dynamic management of project progress, cost and function, and improving the timeliness and scientificity of decision-making. Therefore, this article proposes the theoretical framework and architecture of a construction project decision support system based on data warehousing. Then, this article proposes a deep belief network (DBN) evaluation method to evaluate the performance of the system, and the results show that the proposed method has superior performance.
A Rapid Earthquake Disaster Assessment Platform Based on Cloud Computing
Authors: Chen Ailin , Hu Bin , Yang Li , Zhang Xian , Luo Yong
Published: December 2023

In the past few decades, earthquakes have been a major cause of casualties and economic losses. The rapid assessment system for earthquake disasters plays an important role in earthquake prevention, disaster reduction, and emergency command by calculating the economic losses and casualties caused by earthquakes in a relatively short time after the occurrence of an earthquake. Although there are now many rapid assessment systems for earthquake disasters, most of them adopt C/S and B/S architectures, which have limited computational efficiency during large-scale earthquakes. Based on these factors, this study aims to build a cloud computing-based rapid assessment system for earthquake disasters. The main modules of the system include intensity impact field calculation, building damage assessment, economic loss assessment, casualties assessment, and model parameter calibration. The results show that the system significantly speeds up the calculation process and shortens the assessment time. It can provide timely disaster assessment information to relevant departments in a short period and provide technical support for emergency decision-making.
Cryogenic charge readout electronics for the ProtoDUNE-II program and DUNE
Authors: Huang Roger ,   the DUNE collaboration
Published: December 2023

The upcoming ProtoDUNE-II program at the CERN Neutrino Platform will consist of 2 liquid argon time projection chambers, which will serve as demonstrators of the technologies that will be used in the first 2 far detectors of the Deep Underground Neutrino Experiment (DUNE). A core component of these detectors is the cryogenic charge readout electronics, which are immersed in liquid argon along with the detectors and are responsible for reading out charge signals from the anodes of the time projection chambers. We discuss the design of these electronics and preliminary performance results from the ProtoDUNE-II assembly experience.
Transposed Poisson structures on solvable and perfect Lie algebras
Authors: Kaygorodov Ivan , Khudoyberdiyev Abror
Published: December 2023

We described all transposed Poisson algebra structures on oscillator Lie algebras, i.e. on one-dimensional solvable extensions of the(2n+1)-dimensional Heisenberg algebra; on solvable Lie algebras with naturally graded filiform nilpotent radical; on(n+1)-dimensional solvable extensions of the(2n+1)-dimensional Heisenberg algebra; and onn-dimensional solvable extensions of then-dimensional algebra with trivial multiplication. We also answered one question on transposed Poisson algebras early posted in a paper by Beites, Ferreira and Kaygorodov. Namely, we found that the semidirect product ofsl2and irreducible module gives a finite-dimensional Lie algebra with non-trivial12-derivations, but without non-trivial transposed Poisson structures.
Chemical characteristics of red swimming crab (Thalamita spinimana) in Dompak Waters, Tanjungpinang City
Authors: Oktavia Y , Muzammil W
Published: December 2023

Red swimming crab (Thalamita spinimana) is one of the fishery commodities caught by fishermen in Senggarang Village, Tanjungpinang City. Dompak Waters is one of the red swimming crab fishing ground for Senggarang fishermen. Utilization of red swimming crab have not used optimally as raw material for food and industry. This study aimed to determine the nutritional composition, fatty acids, amino acids, and heavy metals in red swimming crab. The sample used is fresh red swimming crab meat contained in the carapace and claws. The results showed that the nutritional composition of fresh red swimming crab meat contained 81.13% moister, 15.48% protein, 0.59% fat, 2.14% ash, 0.67% carbohydrate, and 0.53% crude fiber content. The highest amino acid content in red swimming crab is glutamic acid at 16,043.78 mg/kg. Red swimming crab has 0.38% unsaturated fatty acids and 0.20% saturated fatty acids. Heavy metals Hg, Pb, and Sn contained in red swimming crab are still below the based on Indonesian National Standard for heavy metal maximum threshold contained in food. Red swimming crab caught by fishermen in Senggarang Village from Dompak Waters fishing ground area are safe to use as food and nutritious raw materials.
Use of sea urchin (Diadema setosum) shells as antibacterial
Authors: Saputra E , Pujiastuti D Y , Abdillah A A
Published: December 2023

Sea urchin (Diadema setosum) is one type of aquatic biota originating from the echinoderm phylum whose distribution is seen in almost all waters. The toxin produced by sea urchins can be used in various fields, one of which is a potential treatment as antibacterial because it contains bioactive compounds. Staphylococcus aureus (S. aureus) is a small portion of microorganisms that live in the oral cavity that can cause disease.
Morphology of Female Tilapia (Oreochromis sp.) Broodstock at Hatchery Centers in South Sulawesi
Authors: Amrullah  , Ardiansyah  , Dahlia  , Wahidah  , Dwinhoven I
Published: December 2023

This study aimed to evaluate the morphology of female tilapia (Oreochromis sp.) broodstock used in 3 hatcheries in South Sulawesi. A total of 92 female tilapia broodstock were collected from 3 hatcheries in South Sulawesi: Gowa Regency (30 fish), Bantaeng (30 fish), and Soppeng (32 fish). Morphological measurements were taken using a ruler on eight characters including the TL, SL, HL, SnL, CPL, BH, CPH and HH. Comparison of values among morphometric characters SL, HL, SnL, CPL, BH, CPH, and HH to TL was analyzed for variance (Anova) and continued with Duncan’s comparison test. The results of the analysis showed that the SL/TL characters were not significantly different (P > 0.05) between hatchery locations, while the HL/TL, SnL/TL, CPL/TL, BH/TL, CPH/TL, and HH/TL characters were significantly different (P < 0.05) between locations. Most of the morphological characters in female broodstock originating from Gowa and Soppeng contributed greatly to the formation of the first main axis (F1), while the rest were scattered on the second (F2) and third (F3) axes These results indicate that, in general, in terms of morphometric variations, the female broodstock at the three tilapia hatcheries have different morphometric characteristics.
Iodine content and acceptability of seaweed flour from various types of seaweed, drying methods, and types of fishy odor removal
Authors: Retiaty F , Nurjanah N
Published: December 2023

This study aimed to develop seaweed flour from various types of seaweed (Euchemma cottonii, Gracillaria verrucosa) with various drying methods (sun, vacuum oven, cabinet drying, drum drying) and types of fishy odor removal [solution of Ca(OH)2and lime each 5%, 0.25% star anise, 0.33% clove powder], analyze iodine content and acceptability. Iodine content and acceptability were analyzed by ICP-OES and multiple comparison test, respectively. The results showed that the types of fishy odor removal significantly affected the organoleptic acceptance of seaweed flour with the best acceptance being 5% Ca(OH)2solution (p<0.05). Iodine content between drying methods and types of seaweed was significantly different (p<0,05). Seaweed flour with drum drying significantly had the highest iodine content, 89.96 (Euchemma cottonii) and 564.15 mg/kg dw (Gracillaria verrucose). Seaweed flour fromGracillaria verrucosahad significantly higher iodine content thanEuchemma cottonii, 205.26 and 41.58 mg/kg dw, respectively (p<0.05). The study concluded that types of fishy odor removal with the best panelist acceptance, types of seaweed, and drying methods that produce seaweed flour with the highest iodine are 5% Ca(OH)2 solution,Gracillaria verrucosaand drum drying, respectively. Seaweed flour had the potential as an ingredient in the development of nutrient-rich products, especially iodine.
Effectiveness of cultivation Chaetoceros calcitrans with liquid organic fertilizer Gracilaria sp. against growth rate and nutritional content of Artemia sp.
Authors: Kusuma R N , Alamsjah M A , Agustono
Published: December 2023

This research aims to determine the effectiveness of the cultivation of Chaetoceros calcitrans with liquid organic fertilizer Gracilaria sp. on the growth rate and nutritional content of Artemia sp. This research used a completely randomized design (CRD) consisting of 5 treatments, namely P0 (pro analysis fertilizer 16 mg/ml), P1 (liquid organic fertilizer Gracilaria sp. 8 mg/ml), P2 (liquid organic fertilizer Gracilaria sp. 16 mg/ml), P3 (liquid organic fertilizer Gracilaria sp. 24 mg/ml), P4 (liquid organic fertilizer Gracilaria sp. 32 mg/ml) with 4 replications each. The data statistically analyzed using ANOVAvtest and continued with Duncan’s Multiple Range Test to determine the effective dose as feed for Artemia sp. Furthermore, the research was carried out using the Independent Sample T-Test test which consisted of 2 treatments, namely P0 and P1 with 3 replications each. The results showed that the use of liquid organic fertilizer Gracilaria sp. on the cultivation of Chaetoceros calcitrans did not give a significant difference (p≥0.05) to the growth rate of length and weight in Artemia sp. Proximate analysis of Artemia sp. Chaetoceros calcitrans feed with liquid organic fertilizer Gracilaria sp. the results obtained are 53.62% protein, 14.07% carbohydrate, and 25.9% fat.
Water quality and fish health in the upper asahan river in supporting the sustainability of fish resources
Authors: Anggraeni D P , Ditya Y C , Makmur S , Makri  , Fatah K , Ali M
Published: December 2023

This research aims to analyze condition of the aquatic environment from the physical and chemical aspects of the waters and analyze the health of fish in supporting the sustainability of fish resources in the upper part of the Asahan River. Sampling was carried out by purposive sampling method at nine stations obtained in situ and secondary data. The results showed that in general the quality of the waters upstream of the Asahan River was below the second class of river water quality standard. However, it is necessary to monitor regularly the parameters of ammonia and oil content in the waters of the Asahan River so as not to exceed the second class of river water quality standard, because this had implications for the development of the parasite population of Alitropus sp. In addition, the emergence of a population of fish lice (Alitropus sp.) has also caused many fish that used to inhabit the upper reaches of the Asahan River, there is only one species, namely Asa Fish (Osteochillus vittatus) and freshwater lobster (Cherax quadricarinatus). Several physical and chemical parameters of the waters have a positive effect on the development of the Alitropus typus parasite, including temperature, brightness, ammonia and pH.
Feeding management of vannamei shrimp (Litopenaeus Vannamei) with immunostimulant addition
Authors: Daniel K , Sari P D W
Published: December 2023

Giving immunostimulants is one of the preventive measures against infectious diseases. This activity aims to know the feed management of vannamei shrimp with adding immunostimulants on the culture of vannamei shrimp. The parameter observed were Total Haemocyte Count (THC) to know the effect of immunostimulant. The value of total haemocytes in the DOC 31-35 was 15.87×106 cells/ml - 25.56 × 106 cells/ml. The second measurement of total haemocyte count was done for the vannamei shrimp in the DOC 59-63 and showed 14.58×106 cells/ml - 27.45×106 cells/ml.
The effectiveness of additional silage of fish ofal and bagasse fermentation on biomass and population of silk worm (Tubifex tubifex)
Authors: Ismawati H , Sulmartiwi L , Dewi N N
Published: December 2023

The purpose of this study was to determine the effect of giving catfish offal silage and sugarcane bagasse fermentation to the biomass The method used in this research is experimental using Completely Randomized Design (CRD). The treatments were 413 gram (100%) rice field mud, 206.5 gram rice field mud + 75% fish offal silage + 25% bagasse fermentation, 206.5 gram rice field mud + 50% fish offal silage + 50% bagasse fermentation, rice field mud 206.5 grams + 25% silage of fish offal + 75% bagasse fermentation. Each treatment was repeated five times. The results showed that the highest peak of silk worm biomass with 206.5 grams of rice field mud culture + 25% fish offal silage + 75% bagasse fermentation with an average of 22.25 grams and the lowest biomass was produced on 406 grams (100%) mud media. Rice fields with an average of 7.15 grams. The highest population of silkworms was found in 206.5 gram rice field mud media + 25% fish offal silage + 75% bagasse fermentation obtained 6651 ind, the lowest population in 406 gram (100%) rice field mud media with an average of 2.263 ind.
Water profile of white shrimp (Litopenaeus vannamei) infected with white feces disease (WFD)
Authors: Rahardjo K K E , Satyantini W H , Amin M , Mukti A T
Published: December 2023

In mid-2021, shrimp farmer reported case of mass deaths in white shrimp (Litopenaeus vannamei) in Pasuruan Regency, reaching 2.6-3 kg/day in Kalianyar Village, Bangil District. To determine the main pathogenic bacteria that cause mass mortality and the composition of microbes on rearing media infected with certain diseases and healthy ones, this study observed the water profile of ponds which include microbial composition in it using next-generation sequencing (NGS) technology. The research was conducted by taking healthy shrimp pond water samples and infected shrimp pond water samples. These results generally indicate that the disease is similar to white feces syndrome (WFS). The results of the NGS test showed that the main causative pathogen is Vibrio vulnificus because its presence in infected pond water is quite dominant.
Assessment of coral reef condition using upt (underwater photo transect) method on gili labak island madura indonesia
Authors: Irawan D , Mukti A T , Andriyono S , Muhsoni F F
Published: December 2023

Coral reefs are unique, complex and high-productivity marine ecosystems that make coral reefs a place to grow and breed most fish and biota in the waters, and physically the function of coral reefs is to withstand coastal abrasion, break waves and so on. To be able to manage coral reefs properly, valid data support is needed as a basis for formulating a policy. Gili Labak Island is one of the islands that is currently a tourist attraction because it has a very wide expanse of coral reefs. The UPT method is a method that utilizes technological developments, because in this method digital camera technology and computer software are used. Data retrieval in the form of underwater photos is done by shooting using an underwater digital camera. The photographs were then analyzed using computer software to obtain quantitative data. This study aims to calculate the biota in the transect. The results obtained Coral 72.92%, Dead coral (DC) 2.03, Dead Coral Algae (DCA) 9.09%, Soft Coral (SC) 0.33%, Rubble (R) 6.15%, Sand (S) 8.98%, Rock (RK) 0.52%.
Growth rate and survival rate of montipora coral transplant on faba material in Baluran National Park
Authors: Herawati E Y , Arsad S , Khasanah R I , Yudatomo  , Juniarsa E F , Ma’arif M C , Nugraha D R W , Aisyah A D , Sofarini D
Published: December 2023

Coral transplantation is one of the rehabilitation efforts that can be applied to accelerate the coral reef recovery process. FABA (fly ash bottom ash) is an environmentally friendly material and is declared suitable for use as a coral transplantation medium. This study aims to determine the growth rate of transplanted corals as an effort to rehabilitate damaged coral reef ecosystems and restore coral reef habitat and biota associated with coral reef communities in Bama waters, Baluran National Park, East Java. The corals studied were Montipora sp. The research location has a salinity range of around 31-34 psu, temperature 28-30°C,100% brightness, turbidity (turbidity) 1.2-1.6 NTU, current velocity between 0.07 m/s to 0.31 m/s, and sedimentation ranged from 2.81 mg/cm2/day to 5.92 mg/cm2/day, nitrate 0.004-0.026 mg/l, ammonia 0.048-0.189 mg/l, and orthophosphate 0.008-0.028 mg/l. In general, the water conditions in Bama are still in quite good condition for coral growth. During the 4 months of observation, the achievement of growth in length and height of coral species of Montipora sp. reach 60.56 mm and 21.31 mm, respectively. The growth rate of the average length and height of Montipora sp. respectively reached 15.14 mm per month and 5.33 mm per month.
Improving the quality of shellfish products with boiler-based steaming machines in Banjar Kemuning Village, Sedati, Sidoarjo
Authors: Tjahjaningsih W , Mubarak A S , Saputra E , Pursetyo K T
Published: December 2023

Shellfish are filter feeder animals that filter food from the mud of their habitat and are used as bioindicators of water pollution. This has an impact on food safety if it does not meet the quality standards of shellfish sanitation. To provide a sense of security to consumers is to reduce some of the hazardous materials either from biological, chemical, or physical hazards. Banjar Kemuning Village is located in Sedati District, Sidoarjo Regency, East Java has five Joint Business Groups (KUB) which are engaged in catching shellfish. Shellfish taken from the waters should be handled related to sanitation processes. One solution for processing shellfish to meet quality standards is the method of steaming shellfish based on a boiler machine. Activities include (1) counseling through face-to-face meetings and discussions, (2) demonstration plots on the application of mussel steaming technology using a steamer boiler, and (3) monitoring and evaluation of post-catch shellfish handling related to sanitation and hygiene. The application of appropriate technology with the boiler-based shellfish steaming method can increase the production and quality of shellfish products.
Crude protein and crude fiber content of fish silage fermented with kombucha tea
Authors: Pratama A W W , Satyantini W H , Kenconojati H
Published: December 2023

Fish silage production using mineral acid is considered to have a negative effect because it is highly corrosive. As an alternative, kombucha tea which contains several organic acids and microorganisms can be used as a starter for fish silage fermentation. This study aims to determine the effect of different doses and duration of fermentation on the crude protein and crude fiber content of fish silage. The research method used was a factorial completely randomized design (CRD) method with 2 factors, namely factor A (dose) and factor B (fermentation time). The results showed that the difference in the dose of kombucha tea was not significantly different (p>0.05) on the increase in crude protein, while the difference in fermentation time was considerably different (p<0.05). Meanwhile, the difference in kombucha tea dose was not significantly different (p>0.05) on the decrease in crude fiber, but the difference in fermentation time was significantly different (p<0.05). Based on these results, there was an interaction between the dosage and the length of fermentation time on the crude protein content, while there was no interaction in crude fiber content. In conclusion, fermentation of fish silage using kombucha tea increased crude protein content while decreasing crude fiber content.
Evaluation of larval Beautiful Groupers (Epinephelus fuscoguttatus x E. microdon) using Chlorella sp. and Artemia sp.
Authors: Ramadhany F , Sumito  , Sari L A , Nindarwi D D , Arsad S
Published: December 2023

Grouper is one of the fishery commodities having a fairly high price and high economic value at the cultivator level. Due to the increasing market demand in the world, the larval rearing of the beautiful groupers (Epinephelus fuscoguttatusxE. microdon) has been carried out in order to obtain quality seeds. The purpose of this study was to determine the results of the evaluation of larval rearing of beautiful groupers (Epinephelus fuscoguttatusxE. microdon) usingChlorella sp. andArtemia sp. The working methods used in this study included preparation of tanks and water maintenance of culture media, management of feed, stocking and hatching of eggs, frequency and timing of feeding larvae/seeds, water quality management, pest and disease control, and grading and harvesting. Seed harvesting could be done after the seeds were aged 45 to 50 days old with a size of 3 cm. Water quality parameters measured were temperature at 28-32°C, pH at 7-8, salinity at 29-33 ppt, and DO at 6.25-7.3 mg/L. Survival rate (SR) in larval rearing was 57%, and the hatching rate (HR) was 60%.
Histopathological condition of Litopenaeus vannamei infected with Infectious Myonecrosis Virus (IMNV) on different days of culture collected from Aceh, Sidoarjo, Probolinggo and Lampung Indonesia
Authors: Puspitasari I , Suseno D N , Yudana IGP G R , Anwar M K
Published: December 2023

Histopathological detection is one of many methods that has been used on shrimp diseases detection. A study on histopathology of Litopenaeus vannamei infected by infectious Myonecrosis Virus (IMNV) has been conducted in Sidoarjo, East Java. The purpose of this study was to give a clear view of the histopathological condition of shrimp infected by IMNV which is necessary to examine the destructive level of the disease within the shrimp cells and hopefully can contribute to adding more information about the disease. About 16 samples of shrimp from different days of cultured that shown an IMNV infection clinically sign has been examined on their muscle tissue, lymphoid organ and hepatopancreas condition. The result has shown that shrimp infected by IMNV has a necrosis and haemocyte infiltration on muscle, spheroids on lymphoid organ and shown congestions and haemocyte infiltrations on hepatopancreas. There were significant differences (P<0.05, Kruskal-Wallis) on muscle and lymphoid organ condition between shrimp before and after 2 months cultured. But there was no significant difference in shrimp hepatopancreas condition.
Characterizing subgenome recombination and chromosomal imbalances in banana varietal lineages
Authors: Higgins Janet , Osorio-Guarín Jaime Andrés , Olave-Achury Carolina , Toloza-Moreno Deisy Lisseth , Enriquez Ayda , Di Palma Federica , Yockteng Roxana , De Vega Jose J
Published: December 2023

Background

Bananas and plantains (Musa spp.) are among the most important crops worldwide. The cultivated varieties are vegetatively propagated, so their genetic diversity is essentially fixed over time. Musa acuminata, M. balbisiana and M. schizocarpa have provided the named A, B and S subgenomes that predominantly constitute these varieties. Here we aimed to characterize intergenetic recombination and chromosomal imbalances between these A/B/S subgenomes, which often result in copy-number variants (CNVs) leading to changes in gene dosage and phenotype, in a diverse panel of bananas and plantains. This will allow us to characterize varietal lineages better and identify sources of genetic variation.

Methods

We delimited population structure and clonal lineages in a diverse panel of 188 banana and plantain accessions from the most common cultivars using admixture, principal component and phylogenetic analyses. We used new scalable alignment-based methods, Relative Averaged Alignment (RAA) and Relative Coverage, to infer subgenome composition (AA, AAB, etc.) and interspecific recombination.

Results

In our panel, we identified ten varietal lineages composed of somatic clones, plus three groups of tetraploid accessions. We identified chromosomal exchanges resulting in gains/losses in chromosomal segments (CNVs), particularly in AAB and ABB varieties.

Conclusions

We demonstrated alignment-based RAA and Relative Coverage can identify subgenome composition and introgressions with similar results to more complex approaches based on single nucleotide polymorphism (SNP) databases. These ab initio species-agnostic methods can be used without sequencing a panel of wild ancestors to find private SNPs, or in recently diverged pools where private SNPs are uncommon. The extensive A/B/S exchanges and the variation in the length of some introgressions between lineages further support multiple foundational events of hybridization and residual backcrossing. Imbalances between A/B/S may have resulted in CNVs and gene dosage variation. Since most edible banana genomes are fixed on time, these CNVs are stable genetic variations probably associated with phenotypic variation for future genetic studies.