bluuebunny/crossref_metadata_2025_split huggingface dataset:
MANIPULATION OF DIFFERENT WATER LEVELS AGAINST THE SPAWNING OF CLIMBING PERCH (Anabas testudineus Bloch) NATURALLY
Authors: Berkatullah Amin Muhammad , Murjani Akhmad , Hanafie Agussyarif 
Published: October 2023

Climbing perch enlargement activities are constrained by available fry, due to insufficient production. One of the unknown aquaculture factors is the best water level that can be used in spawning activities for climbing perch. The purpose of the study was to determine the effect of water level manipulation on the spawning results of climbing perch carried out naturally. The study used 3 treatments, namely water levels of 40 cm, 50 cm, and 60 cm and each treatment was repeated 4 times, while the parameters observed included fecundity, egg diameter, fertilization rete, hatching rate, survival rate, and water quality. The results showed that fecundity, egg diameter, fertilization rate, the highest hatching rate were obtained at treatment B of 26419.50 eggs, 0.63 mm, 59.50%, and 41.25%, respectively, while the highest survival rate was obtained in treatment A, which was 71.00%. Water quality during the study was still at the tolerance limit that supports the spawning of climbing perch, namely temperatures between 25.2 – 26.2oC, pH between 7.05 – 7.34, and DO between 3.77 – 4.21 mg / L. Based on diversity analysis (ANOVA) it shows that Fhitung < Ftabel is stated to be no real difference between all treatments given (receive H0) and the results of regression tests show that a water level of 45 cm is optimal for natural spawning of climbing perch

Kegiatan pembesaran ikan papuyu terkendala dengan benih yang tersedia, karena produksinya yang tidak mencukupi. Salah satu faktor budidaya perairan yang belum diketahui adalah ketinggian air yang terbaik yang dapat digunakan dalam kegiatan pemijahan ikan papuyu. Tujuan penelitian untuk mengetahui pengaruh manipulasi ketinggian air terhadap hasil pemijahan ikan papuyu yang dilakukan secara alamiah. Penelitian menggunakan 3 perlakuan, yakni ketinggian air 40 cm, 50 cm, dan 60 cm serta masing-masing perlakuan diulang sebanyak 4 kali, sedangkan parameter yang diamati meliputi fekunditas, diameter telur, derajat pembuahan, derajat penetasan, survival rate, dan kualitas air. Hasil penelitian menunjukkan bahwa fekunditas, diameter telur, derajat pembuahan, derajat penetasan tertinggi diperoleh pada perlakuan B masing-masing 26419,50 butir, 0,63 mm, 59,50%, dan 41,25%, sedangkan survival rate tertinggi diperoleh pada perlakuan A, yakni 71,00%. Kualitas air selama penelitian masih berada pada batas toleransi yang menunjang pemijahan ikan papuyu yaitu suhu antara 25,2 – 26,20C, pH antara 7,05 – 7,34, dan DO antara 3,77 – 4,21 mg/L. Berdasarkan analisis keragaman (ANOVA) menunjukan bahwa Fhitung < Ftabel dinyatakan tidak berbeda nyata antara semua perlakuan yang diberikan (terima H0) dan hasil uji regresi menunjukkan bahwa ketinggian air 45 cm adalah optimal untuk pemijahan ikan papuyu secara alamiah.
KELAYAKAN FINANSIAL PADA USAHA BUDIDAYA IKAN PATIN (STUDI KASUS PADA POKDAKAN PATIN JAYA MANDIRI)
Authors: Mustika Rina 
Published: October 2023

Ikan patin (Pangasius sp) merupakan ikan yang mempunyai nilai ekonomis penting, karenanya ikan ini mempunyai prospek yang baik untuk dikembangkan, akan tetapi pengembangannya sangat dipengaruhi oleh mahalnya harga pakan sebagai komponen utama pembiayaan. Budidaya ikan patin di Kabupaten Hulu Sungai Utara telah dikembangkan oleh masyarakat dan penelitian ini dilaksanakan di Desa Pihaung Kecamatan Haur Gading Kabupaten Hulu Sungai Utara dengan penetapan sampel secara sengaja pada Kelompok Pembudidaya Ikan (Pokdakan) Patin Jaya Mandiri. Penelitian ini bertujuan untuk mengetahui kelayakan finansial usaha budidaya ikan patin. Penelitian ini menggunakan metode survey. Analisis data yang digunakan untuk mengetahui kelayakan finansial usaha adalah analisis laba/rugi, Revenue Cost Ratio (RCR), Payback Period (PP), Break Even Point (BEP), Net Present Value (NPV), Gross Benefit Cost Ratio dan Internal Rate of Return (IRR). Hasil penelitian menunjukkan bahwa berdasarkan seluruh hasil analisis secara finansial, usaha budidaya ikan patin pada Pokdakan Patin Jaya Mandiri menguntungkan dan layak untuk dikembangkan.

Catfish (Pangasius sp) is a fish that has important economic value. Therefore, this fish has good prospects for development, but the high feed price heavily influences its development as the main financing component. The community has developed catfish farming in Hulu Sungai Utara District, and this research was carried out in Pihaung Village, Haur Gading Sub District, Hulu Sungai Utara District by deliberately setting the sample to the Patin Jaya Mandiri Fish Cultivator Group (Pokdakan). This study aims to determine the financial feasibility of a catfish farming business. This study uses a survey method. Data analysis used to determine the financial feasibility of a business is profit/loss analysis, Revenue Cost Ratio (RCR), Payback Period (PP), Break Even Point (BEP), Net Present Value (NPV), Gross Benefit Cost Ratio and Internal Rate of Returns (IRR). The study shows that based on all the financial analysis results, the catfish farming business at Pokdakan Patin Jaya Mandiri is profitable and feasible to develop.
ANALISIS TINGKAT KESUKAAN BAKSO IKAN TOMAN (Channa micropeltes) DENGAN PENAMBAHAN WORTEL (Daucus carrota)
Authors: Adawyah Rabiatul , Khusnul Khotimah Iin , Jannah Raudatul , Suhanda Juhana , Dekayanti Tri , Adriani Muhammad , Riani Maria Ulfah , Redha El 
Published: October 2023

Ikan toman, Channa micropeltes adalah ikan asli Kalimantan yang menghuni sungai dan rawa. Ikan toman adalah ikan asli Asia dan banyak ditemukan di sungai, perairan tenang, rawa, sawah, dan danau. Ikan Toman berdaging putih, mudah dipisahkan dari kuli dan tulangnya, berdaging tebal, kandungan proteinnya tinggi, selalu tersedia dan harganya murah sehingga dapat diolah menjadi beragam i0ahan diantaranya adalah bakso. Bakso ikan toman yang tinggi kandungan proteinnya dicoba ditambahkan wortel yang kaya akanprovitamin A yang baik untuk Kesehatan mata. Hasil dari penelitian imenunjukkan penambahan wortel pada bakso ikan toman yang terbaik terhadap kualitas bakso ikan toman (Channa micropeltes) berdasarkan hasil uji organoleptik yaitu perlakuan B dengan penambahan wortel sebanyak 10%, hasil uji hedonik spesifikasi kenampakan diperoleh nilai 7.1 (suka), spesifikasi bau diperoleh nilai 6.7 (agak suka), pada spesifikasi rasa diperoleh nilai 7.15 (suka), spesifikasi tekstur diperoleh nilai 7.2 (suka) dan pada spesifikasi warna diperoleh nilai 7.45 (suka), maka dapat diambil kesimpulan bahwa produk bakso ikan toman (Channa micropeltes) dengan penambahan wortel (Daucus carrota) dapat diterima oleh panelis

Toman fish, Channa micropeltes is a fish native to Borneo that inhabits rivers and swamps. Toman fish is native to Asia and is widely found in rivers, calm waters, swamps, rice fields, and lakes. Toman fish is white-fleshed, easily separated from coolies and bones, thick fleshy, high protein content, always available and cheap so that it can be processed into a variety of meatballs. Toman fish meatballs that are high in protein content are tried to add carrots which are rich in provitamin A which is good for eye health. The results of the study showed that the addition of carrots to toman fish balls was the best for the quality of toman fish balls (Channa micropeltes) based on organoleptic test results, namely treatment B with the addition of carrots as much as 10%, The results of the hedonic test of the appearance specification obtained a value of 7.1 (like), the smell specification obtained a value of 6.7 (somewhat like), the taste specification obtained a value of 7.15 (like), the texture specification obtained a value of 7.2 (like) and the color specification obtained a value of 7.45 (like), it can be concluded that the toman fish meatball product (Channa micropeltes) with the addition of carrots (Daucus carrota) can be accepted by the panelists.Keywords: Toman Fish, Carrot, Meatballs, Protein Organoleptic
Pyrolysis of Tyres Waste in Fixed Bed Reactor
Authors: Papuga Saša , Djurdjevic Milica , Tomović Goran , Vecchio Ciprioti Stefano 
Published: October 2023

This paper presents the results of investigations on the pyrolysis of tyres waste in a laboratory fixed bed batch reactor. The results regarding the influence of either the reaction temperature (425, 450, 475, and 500 °C) and the flow of the inert gas (0, 100, 300, and 500 mL/min) on products yield (referred to pyrolysis of waste tyres) are also considered and discussed. On the basis of the above mentioned findings, the most appropriate experimental conditions were selected to contribute to a higher yield of pyrolysis oil. The sample of pyrolysis oil obtained from the experiments carried out in the selected optimal conditions (reaction time 120 min, temperature 450 °C and the inert gas flow of 100 mL/min) was subjected to a calorimetric and infrared spectroscopy analysis. The results of IR spectroscopy analysis on this oil sample showed the following content in percentages (by mass): 32.59 % of aromatics, 51.06 % of paraffins and 16.35 % of naphthenes. The pyrolysis oil so obtained has a high calorific value (42 MJ/kg) and a low sulfur content (0.41 % by mass), which makes it an excellent raw material for energy production. The solid product, i.e. pyrolysis char or carbon black, has the potential to be used as an adsorbent or catalyst support after an activation process, which changes its irregular pore structure to a more voluminous one, making the overall structure more crystalline and symmetrical. Pyrolysis coal has a fairly high calorific value of 31 MJ/kg, when compared to typical solid fuels, so it can be used in energy production or as a feedstock for the gasification process.
Weight-Bearing CT with Maximum Ankle Dorsiflexion to Identify Impingement and Tibial Plafond Stress Fracture
Authors: Brown Parker J. , Wyse Aaron , Patel Karan , Long Jeremiah 
Published: October 2023

Case:
A 25-year-old male pole vaulter presented with several months of right ankle pain. Radiographs showed an anterior tibial osteophyte with a small intra-articular body suggesting impingement. Weight-bearing computed tomography (CT) revealed an associated tibial plafond stress fracture. Subsequent arthroscopy with osteophyte resection and loose body removal significantly improved symptoms, and he gradually resumed training.

Conclusion:
Stress fractures should always be considered in athletes with ankle pain. A unique aspect of this case was the use of weight-bearing CT in diagnosis and surgical planning. To our knowledge, this is the first described case in which weight-bearing CT was used in this fashion.
Intersectionality in transnational English teaching: Exploring the dynamics of privilege and disadvantage in Korean ELT
Authors: Kudaibergenov Meerbek 
Published: October 2023

Abstract

This article explores the niche occupied by transnational English teachers within the context of Korean ELT. Employing intersectionality theory as an analytic framework, the study examines the experiences of Leo (pseudonym), a German national who taught English in Korea circumventing legal restrictions against non-native English-speaking teachers. Through an analysis of Leo's narrative, this research elucidates the complex dynamics of privilege and disadvantage prevalent in the Korean ELT industry. The findings underscore the significance of nationality, race, and marital status in securing a teaching position, revealing a persistent preference for Caucasian teachers and the perpetuation of White supremacy in ELT. Leo's experiences shed light on broader issues of power imbalances, exploitation, and identity tensions that transnational teachers encounter. These findings contribute to a nuanced understanding of the niche occupied by transnational English teachers and provide insights for the development of inclusive and equitable policies and practices in foreign language education.
Search for high-creep-strength welding conditions considering HAZ shape factors
Authors: IZUNO Hitoshi , Demura Masahiko , Yamazaki Masayoshi , Minamoto Satoshi , Sakurai Junya , Nagata Kenji , Mototake Yoh-ichi , Abe Daisuke , Torigata Keisuke 
Published: October 2023

Abstract

The creep rupture life of ferritic heat-resistant steel weld joints is limited by Type IV cracking that occurs in the heat-affected zone (HAZ), whose shape affects creep damage accumulation. In this study, we address the inverse problem of extending the creep rupture life of weld joints by controlling HAZ shape via welding conditions. As reported separately, we have developed a workflow that predicts weld joint creep rupture life from the predicted HAZ shape from welding conditions, and have implemented it in the material design system. Using this workflow, we presented a tandem Bayesian model for predicting the creep rupture life from welding conditions via the geometric features of HAZ shapes (HAZ shape factors), which are considered to determine the creep rupture life. The prediction model of a HAZ shape factor from welding conditions was formed by Gaussian process regression. The prediction model of the creep rupture life was formed by Bayesian linear regression. These models were probabilistically connected by Bayesian statistical mathematics. An algorithm to increase the creep rupture life was developed to search for welding conditions. This method was applied to a 2 1/4Cr–1Mo heat-resistant steel weld joint simulated with a plate I-bevel three-layer gas tungsten arc welding. The number of welding conditions combination reaches 78 = 5764801. Start from 49 initial HAZ shape factors and 22 creep rupture life data, we performed forward calculations of 20 rupture lives to find welding conditions that can improve the creep rupture life by 12% over the initial data.
Investigation on the characteristics of a high-frequency two-dimensional rotary valve generating fluid pulse width modulation wave
Authors: Ren Yan , Xu Chengdu , Tang Hesheng , Ruan Jian 
Published: October 2023

Abstract
Inspired by the working principle that there is no throttling loss (theoretically) in the fully open and fully closed states of high-speed on-off valves, a high-frequency two-dimensional rotary valve is proposed to generate fluid pulse width modulation waves to control and distribute the flow rate of the hydraulic system in an energy-saving manner. The mechanism has been designed, so the aim of this paper is to develop detailed research on the characteristics of the high-frequency two-dimensional rotary valve as a new hydraulic component. The mathematical model of the rotary valve is established and influences of key parameters on its characteristics are analyzed. Then the static and dynamic characteristics of the rotary valve are simulated including valve coefficients, leakage, dynamic response and efficiency. Finally, a prototype of the two-dimensional rotary valve is designed and the testing system are built, and its pressure loss characteristics and energy efficiency characteristics are tested experimentally. The experiment results show that the valve is able to reduce throttling losses and improve the overall energy efficiency in the hydraulic system compared with the traditional throttling control. As a new variable mechanism, it can be combined with a quantitative pump to provide a way to form variable, load sensitive, or bidirectional variable pump systems.
Integrated Network Pharmacology Analysis and Experimental Validation to Investigate the Mechanism of Flavan-3-ols and Aromatic resin in Depression
Authors: Ahmad Ansari Vikhar Danish , Khan Subur W , Ali Syed Ayaz , Yasar Qazi 
Published: October 2023

Abstract

Pharmacological mechanism of the major bioactive flavan-3-ols and aromatic resin intended for management of depression was investigated using network pharmacology, molecular docking, and in vivo studies. Using network pharmacology, the targets for antidepressant activity of two flavan-3-ol components and four aromatic resin components was obtained. Protein-protein interaction and KEGG analysis were used to enrich and investigate key pathways. Molecular docking was carried out to evaluate the targets. Force swim test and Tail suspension test were used to study antidepressant effect. Compound-Target network analysis revealed that many targets were hit by components. The number of nodes are 332 and number of edges are 491. PPI state that our network has significant interaction with (targets) that are involved in depression. The KEGG analysis showed major pathways of flavan-3-ols and aromatic resin in managing depression include controlling the calcium signaling pathway, dopaminergic synapse, glutamatergic pathway, long-term depression, and neurodegenerative pathways. Molecular docking study of EGCG showed the most active compound showing highest affinity with − 7.3 kcal/mol towards serotonin 1A (5-HT1A), -7.4 kcal/mol towards D2, -8.9 kcal/mol for MOA-A. Flavan-3-ols and aromatic resins investigation found to have an antidepressant effect. Flavan-3-ols, and aromatic resin combination significantly (p < 0.05) increase the mobility time in force swim test and tail suspension test and significantly (p < 0.05) decrease the immobility time and time freezing. The network analysis and animal study demonstrated that Flavan-3-ols and aromatic resin had antidepressant characteristics, indicating the necessity for more research to produce a novel antidepressant medication.
Comparison of the biomechanical effects of the post-core crown, endocrown and inlay crown after deep margin elevation and its clinical significance
Authors: Wu Feng , su xiao min , Shi Yue , Bai Juan , Feng Jing , Sun Xilin , wang xuanqi , wen jiayu , kang jie 
Published: October 2023

Abstract

(1) Background: The purpose of this in vitro study was to compare and evaluate the stress distribution of maxillary first premolar residual crowns restored with post-core crowns, endocrowns and inlay crowns after deep margin elevation, to explore the optimal restoration for residual crowns using finite element analysis.
(2) Methods: A healthy complete right maxillary first premolar from a male adult was scanned by cone beam computed tomography (CBCT). The finite element model of the tooth was established by reverse engineering software such as Mimics, Geomagic and Hypermesh. On this basis, the residual crown model after deep margin elevation was made, and the experimental group models were divided into three groups, those restored with post core crowns, endocrowns and inlay crowns. Vertical and oblique static loads were applied to the experimental models to simulate the force on the tooth during mastication (the loading position was located in the central fossa of the occipital surface, and the load was 100N) using Abaqus software.
(3) Results: The peak value and distribution of von Mises stress in each part of the experimental model were observed. After deep margin elevation, the peak dentin von Mises stresses were lower than the tensile strength of normal dentin in the post-core crown, endocrown, and inlay crown groups; the lowest stress results were found in the post-core crown group for the dentin, restoration, enamel, and deep margin elevation (DME) layers under vertical and oblique loading. In terms of stress distribution clouds, the peak stresses in the dentin tissue were located in the apical 1/3 of the root after post -core crown restorations for both loads, while stress concentrations were evident in the cervical and root areas after endocrown and inlay crown restorations; regardless of the load and restoration method, the corresponding stress concentration areas appeared at the junction of the DME and dentin tissue at the loading site of the restorations;
(4) Conclusions: Post-core crowns, endocrowns and inlay crowns can be used to restore residual crowns after deep margin elevation, and post-core crowns can better protect the residual tooth tissue.
Morphology-independent general-purpose optical surface tractor beam
Authors: Wang Neng , Ng Jack , Wang Guoping 
Published: October 2023

Abstract

Optical tractor beams capable of pulling particles backward have garnered significant and increasing interest. Generally, it is easier to push than to pull. Traditional optical tractor beams are limited to free space beams with fairly small forward wavevectors, enabling them to pull selected particles. In this study, we present a comprehensive theory for the optical force exerted by a surface wave (SW) through meticulous analytical and numerical calculations, uncovering the relationship between the canonical momentum and optical forces. Moreover, based on the theory, we demonstrate a general-purpose optical surface tractor beam (OSTB) that can pull virtually any passive particle, regardless of its size, composition, and geometry. The OSTB utilizes a SW with negative canonical momentum characterized by a single well-defined negative Bloch k. Unlike previous cases, it relies on a novel mechanism where the negative incident force always surpasses the recoil force. We demonstrate explicitly that the same OSTB, when excited on the surface of a double-negative-index metamaterial, can pull particles with varying morphologies.
Castleman's disease involving paranasal sinus and bilateral orbits: A case report and review of the literature
Authors: Syed Huda , Bakshi Nasir , Akhtar Saad 
Published: October 2023

Abstract
Background Castleman's disease (CD) is a rare non-malignant lymphoproliferative disorder affecting lymph nodes of any region and rarely involving extranodal locations. We report the first case of paranasal sinus involvement in Castleman’s disease (CD), presenting along with bilateral orbital involvement. Additionally, we report the use of Fluorodeoxyglucose (FDG) positron emission tomography scan (PET/CT scan) in the initial and subsequent assessment of orbital CD and the use of chemotherapy and single-agent rituximab for its treatment.Case presentation: We report a 32-year-old female with a history of chronic progressive left periorbital swelling for seven years. Initial evaluation and subsequent computed tomography (CT) scans showed bilateral orbital masses with left optic nerve encasement and ethmoidal and frontal sinus involvement. Bilateral orbital mass biopsies showed CD of mixed cell type. FDG-PET/CT scan showed high uptake in the affected lesions and CT scan also confirmed multicentric involvement. She received rituximab + cyclophosphamide, vincristine and prednisone chemotherapy with a complete metabolic response (mCR). After initial mCR, she relapsed twice, three years apart but went into mCR after single-agent rituximab alone.Discussion A review of the literature of previously reported cases showed no cases of paranasal sinus involvement in CD. Only 24 cases of orbital CD were identified, 20 of which reported confirmed histological findings of CD from the orbital lesion. Ages ranged from 17–76 years, with nearly equal gender distribution. Hyaline vascular type was the most histology and eyelid ptosis and exophthalmos were the most common clinical presentations. Almost half of the reported cases were localized CD and were managed by surgical resection.Conclusion To our knowledge, this is the first reported case of paranasal sinus involvement and simultaneous bilateral orbital CD. Additionally, FDG-PET/CT has shown usefulness in assessing the patient’s disease status and response assessment.