bluuebunny/crossref_metadata_2025_split huggingface dataset:
Application of avian pituitary gland extracts in semi artificial induced breeding of climbing perch Anabas testudineus
Authors: Maulida S , Rahayu S , Eriani K , Fadli N , Maharani M 
Published: August 2023

Abstract
The objective of the present study was to explore the potential of avian hypophysis to induce the breeding of climbing perch. The pituitary glandof local chicken and duck and its combination was tested at the same dose of 0.5 ml/kg body weight (BW) of broodfish. Therefore, the tested treatments as follows; treatment A = 0.5 ml/kg BW of Ovaprim (control; Treatment B= 0.5 ml/kg BW of chicken pituitary extract; Treatment C= 0.5 ml/kg BW of duck pituitary extract; Treatment D= 0.25 ml/kg BW of chicken pituitary extract + 0.25 ml/kg BW of duck pituitary extract. The ANOVA test showed that treatment of avian pituitary extracts had a significant effect on the latency period, the total number of ovulatory eggs, fertility, hatchability, and survival of climbing perch larvae (P<0.05). The highest number of ovulated eggs was obtained in treatment B, this value was significantly different from treatments C and D. The highest fertility and survival were also obtained in the treatment B, but were not significantly different from the treatment C. Meanwhile, the highest hatchability was also obtained in treatment B and was significantly different from other treatments.
Density of baree (Lingula anatina Lamarck, 1801) in Ulee Lheue beach, Indonesia
Authors: Daulay R E , Octavina C , Qalby P D 
Published: August 2023

Abstract

Lingula anatina or baree as a living fossil has an important role for coastal ecosystems where its presence and density are rarely recorded in Aceh. The density of L. anatina was carried out in the beach of Ulee Lheue, Meuraxa District, Banda Aceh City. The purpose of this study is to provide information about the existence of L. anatina to the public and the government to add to the literature review for similar research. Sampling was carried out using a 1m × 1m quadratic transect at each location where the L. anatina biota was found. The results of this study revealed that the density of L. anatina in Ulee Lheue beach was lower than the density in Ujong Pancu Beach. The density in Ulee Lheue beach is 2.5 ind/m2 while the density of L. anatina in Ujong Pancu Beach is 2.89 ind/m2.
Condition of Chaetodontidae fish based on living coral cover in Aceh Jaya Waters, Aceh Province
Authors: Ulfah M , Al Khumairi U K , Fazillah M R , Mustika V S , Azzahara F , Turnip I N , Yulizar  , Fadli N 
Published: August 2023

Abstract
Chaetodontidae is one of the fish families whose existence is important in coral reef ecosystems. This study aims to determine the condition of the Chaetodontidae fish and coral cover in the coral reef ecosystem area of Aceh Jaya District, Aceh Province. The study was conducted in March 2017 with 10 points of observasion location. Data retrieval is done using the visual census technique (VCT)-belt transect method to see the abundance of Chaetodontidae fish in the Point Intercept Transect (PIT) method to see coral cover. The result showed that the abundance of Chaetodontidae fish in the waters Aceh Jaya regency ranged from 187.5 to 5375 ind/ha. There ware 12 species of Chaetodontidae fish found, with the most species being Chaetodon Vagabundus, overall coral cover in the waters of Aceh Jaya regency ranged from 16.25 to 76.88% which was classified in the category of damaged to very good coral reef conditions. The results of the correlation analysis showed that the percentage of live cover had a weak and insignificant relationship with the abundance of Chaetodontidae fish. Not all locations have coral cover followed by high abundance of Chaetodontidae fish.
Spatial dispersal and growth pattern of “nike” fish (apmhidromous goby larva) in Gorontalo, Tomini Bay
Authors: Olii A H , Pasisingi N 
Published: August 2023

AbstractAssessment of distribution and population growth are fisheries population dynamic aspects required to be observed periodically to address sustainable fisheries management. This research aimed to determine spatial dispersal, daily growth patterns, and condition factor of Nike fish as amphidromous schooling larvae in Gorontalo Waters, Tomini Bay. The number of 1808 larva samples were collected for eleven consecutive days during its natural appearance in August 2022. Based on total-length frequency distribution, the larva schools performing in this period presumably comprise more than one age group. Allometric positive daily growth patterns were shown in days 2, 4,7, 10 and 11. In contrast, isometric patterns were exhibited on days 1, 3, 5, 6, 8, and 9. The highest and lowest condition factor values were on the seventh day (length class interval of 32.1-33.6 mm) and the fifth day (length class interval of 28.9-30.4 mm), respectively. The result indicated that Nike daily growth patterns and condition factors fluctuated among their natural appearance days in Bone Estuary. It is understandable that the critical stages of larvae, such as varying salinity, competition for food and niche, and fishing pressure factors, must undergo estuary highly dynamic environmental conditions.
Study of the distribution of the catch of yellowfin tuna (Thunnus albacares) that was land at TPI (fish landing place) Ulee Cot, Meuraxa District, Banda Aceh City
Authors: Agustina I , Miswar E , Nabila A , Rahmah A , Rianjuanda D , Salmarika  
Published: August 2023

Abstract
Activities at fishing port greatly affect the process of distributing catches, especially the distribution of yellowfin tuna at TPI Ulee Cot. Distribution activities have not been optimal and have hampered the distribution flow. This is due to the slow process of handling fish and the incomplete facilities. The length of the distribution process will determine the quality of the product to be marketed. This study aims to describe the distribution activities of the catch landed at TPI, the condition of fishing facilities and relation to the distribution of yellowfin tuna. The data taken consisted of the handling of the catch, pattern, transportation, price, the fishing unit and TPI facilities distribution from interviews and questionnaires. Data analysis is carried out into data selection, data appearance, and drawing conclusions. Distribution activities start from fish transportation and fish handling from boats to fish transported into trucks to be distributed to destination area. The distribution pattern at TPI Ulee Cot only consists of one distribution pattern starting from the level of fishermen-exporting companies. The lack of cold storage facilities causes the quality of the catch to decrease because the fish are not immediately removed from the hold ship until the truck came.
The Carotenoid Contents (Fucoxanthin and β-Carotene), Total Phenolic Content, and Antioxidant Activity of Ethanolic Extracts from Selected Indonesian Seaweeds
Authors: Noviendri D , Qurrotu’ain N , Nurbayti S , Hasrini R F 
Published: August 2023

Abstract
Carotenoids have been shown to have antioxidant activity. The purpose of this study was to analyze the content of carotenoids (fucoxanthin and β-carotene), then to analyze the total phenolic content (TPC), and to test the antioxidant activity of the ethanolic extract from selected Indonesian seaweeds using the 2,2-Diphenyl-1-picrylhydrazyl radical (DPPH) method. The seaweeds used in this study were Padina sp., Sargassum sp., Turbinaria sp., Actinotricia sp., Halimenia sp., Rhodopeltis sp., and Ulva sp. There are several stages of the method, namely extraction by maceration with ethanol p.a. Then, carotenoid analysis was carried out by Thin Layer Chromatography and carotenoid content was carried out by High-Performance Liquid Chromatography. After that TPC analysis was performed using the Folin-Ciocalteu method, and antioxidant activity was analyzed using the DPPH method. The results showed that the highest fucoxanthin content was found in the ethanolic extract of Padina sp. brown seaweed at 133.31 ppm, and the highest β-carotene content was found in the ethanolic extract of red seaweed Actinotricia sp. at 3.60 ppm. The highest TPC was found in the ethanolic extract of Padina sp. of 20.08 g GAE/g. In general, the ethanolic extracts of the seven seaweeds analyzed produced weak antioxidant activity when compared to the ascorbic acid control.
Analysis of leading capture fisheries commodities in Pidie district, Aceh, Indonesia
Authors: Purnama N R , Marzalaina  , Aprilla R M , Rizwan  , Zulfahmi I , Akbar S A 
Published: August 2023

AbstractThis research aims to determine the superior capture fisheries commodities and capture fisheries development strategies in Pidie District. The research was conducted in March-April 2022 in Pidie District, Aceh, Indonesia. The data collected in this study is in the form of data (time series) including production data and production value per fish species in 2016-2020. Determination of superior commodities is based on three criteria, namely: production volume, volume of production value and level of fish consumption using the Location Quotient (LQ) method and further analysis using the Comparative Performance Index (CPI) method. The capture fisheries development strategy is carried out by analyzing the Analytic Hierarchy Process (AHP). Based on the results of the CPI calculation, the leading capture fisheries commodities in Pidie District include marlin fish, followed by dolphinfish, tuna fish, ponyfish, snapper fish and grouper fish. Policy alternatives for the development of capture fisheries in Pidie District are based on the main priorities, namely: improving port facilities and infrastructure (0.489), increasing fishermen’s skills (0.210), increasing the number of fishing units (0.112), building industrial estates (0.107) and maintaining sustainable local wisdom values (0.83).
Addition of potatoes (Solanum tuberosum L.) to vannamei shrimp (Litopenaeus vannamei) rearing media to increase the growth rate
Authors: Ismarica I , Nita A , Mellisa S , Dewiyanti I , Dewi C D 
Published: August 2023

Abstract
Research on the addition of potatoes to vannamei shrimp (Litopenaeus vannamei) rearing media to increase the growth rate was carried out in April-May 2022 at the Fish Hatchery and Breeding Laboratory, Faculty of Marine and Fisheries, Syiah Kuala University, Banda Aceh. This study aimsed to determine the effect produced by the addition of potatoes to the rearing medium and to determine the appropriate dose of potato to increase the growth of vannamei shrimp. The vannamei shrimp used was shrimp fry with a size of PL22. The research container is in the form of 12 pieces with a size of 20L. each container was filled with vannamei shrimp as much as 3 ind/L. The experimental design used was a completely randomized design with four treatments and three replications. The treatments given were Treatment A (controlled), Treatment B (4 g/ind), Treatment C (4.5 g/ind) and Treatment D (5 g/ind). The parameters observed were absolute weight, absolute length, specific growth rate, and survival rate of vannamei shrimp. The results showed that the addition of potatoes to the rearing medium of vannamei shrimp had a significant effect (P<0,05) on the growth and survival rate of vannamei shrimp. The conclusion was the highest additional dose of potatoes 5 g/ind to increase the growth and survival rate of vannamei shrimp.
Freshwater Shrimp Diversity in Pidie Region, Aceh, Indonesia
Authors: Putra D F , Muhammadar A A , Nasir M , Zulfahmi I 
Published: August 2023

Abstract
The research aimed to investigate the diversity and biological aspect of shrimp found in the inland water, Pidie Region, Aceh Indonesia. The purposive sampling method was used. The results showed a total of 144 freshwater were found with 19 ind M. lanchesteri in Kunyet Lake, while 135 shrimp were found in Balu Cut river with details of 8 of M. sintangense species, 23 of M. lanchesteri species, and 104 of C. endhensis species. The length-weight relationship of M. lanchesteri in Kunyet lake ranged from 5-12 mm and 0.06-11.13 g with negative allometric growth, while the length-weight relationship of M. sintengense ranged from 9-15 mm and 1.07-5,21 g, M. lanchesteri ranged from 3-10 mm and 0.06-1.25 g, and C. endhensis ranged from 2-9 mm and 0.02-0.32 g with negative allometric growth patterns respectively. The abundance value of M. sintangense, M. lanchesteri, C. endhensis was 0.08 ind/m2, 0.42 ind/m2, and 1.04 ind/m2, respectively. while the diversity index was 0.77 categorized as low diversity, the dominance index was 0.70 categorized as moderate, and the evenness index of 0.53 was categorized as moderate. Further study of shrimp genetic diversity is recommended to explore deeper information on shrimp species.
A predictive model of Lunar Gateway molecular outgassing and plume-induced contamination
Authors: Hoey W A , Martin M G , Steagall C A , Soares C E , Shallcross G S , Worthy E S 
Published: August 2023

Abstract
The Gateway space station will operate both as a lunar outpost and a hub for space exploration missions in support of a long-term human presence on the Moon, and is under development by NASA in collaboration with ESA, CSA, JAXA, and international commercial partners. Gateway will experience induced molecular contamination from sources including materials outgassing, venting, and the nominal operation of its chemical and electric propulsion systems. The degradation effects of molecular contamination on spacecraft are well-documented and understood, and predictive modeling tools have been developed to aid in the mitigation of such contamination effects in the mission design phase. Therefore, the Gateway Induced Environments and Thermal teams have worked with JPL Contamination Control to develop modular simulation tools for the prediction of molecular contaminant depositions across the mission life, and for use in requirements derivation and sensitivity assessments. Free-molecular transport and deposition of outgassing products onto sensitive Gateway receiver surfaces is calculated using a viewfactor matrix approach, while International Space Station (ISS)-heritage bipropellant plume models are used to evaluate contaminant fluxes generated by the operation of thrusters on Gateway modules and the Orion spacecraft. The alteration of optical properties, e.g. the solar absorptance, of contaminated surfaces is likewise calculated using an ISS-heritage semi-empirical model premised on flight and laboratory testing data. This framework is intended to support early identification of potential integration issues and establish a baseline for incorporating improved analysis and test data as the Gateway design matures.
Metamaterial-based smart and flexible Optical Solar Reflectors
Authors: Gaspari M , Mengali S , Simeoni M , Urbani A , Muskens O L , Sun K , Zeimpekis I , de Groot C H , Bialy A , Czolkos I , Kildebro L , Alpat B , Bartolini G , Jamalipour M , Frolec J , Kralik T , Tessarin F , Gottero M , Schillaci T 
Published: August 2023

Abstract
In the frame of projects funded by the European Commission and the ESA, we developed a new type of Optical Solar Reflector (OSR) that combines the flexibility and easy handling of Second Surface Mirrors with the temperature-variable emittance necessary to ensure both effective radiative cooling in the hot phase and reduced heat losses in the cold phase. The new smart OSR consists of a metamaterial coating deposited on Kapton film. The coating is made of two functional blocks, namely a variable emitter topped by a dielectric solar reflector. The variable emitter is a Metamaterial Perfect Absorber designed for strong and broadband plasmonic resonance absorption in the thermal IR. It consists of a metal back-reflector, a dielectric spacer, and an array of doped VO2 thermochromic micro-antennas that are switched-off when the temperature drops below the metal-to-insulator transition point. The solar reflector is a wideband dielectric filter made of materials that are transparent across the entire spectrum from the VIS to the thermal IR. All the layers of the two blocks are deposited by standard vacuum techniques, while the array is patterned by Nanoimprint Lithography, a technique that is often performed at the wafer level but allows for up-scaling via roll-to-roll or roll-to-plate production setups. The paper reports on the characterization and testing of samples of size up to 100 mm x 100 mm, at the Beginning of Life and after thermal, humidity, irradiation and handling tests.
Evaluation of the Material Properties of Solid Rocket Motor Slag
Authors: Matsuura Yoshiki , Nitta Kumi , Ikeda Hirohide , Kinoshita Masahiro , Ui Kyohichi 
Published: August 2023

Abstract
A considerable amount of aluminum oxide particles are generally produced during the Solid Rocket Motor (SRM) combustion. A project determining the damage caused by slag impact on spacecrafts in orbit is drafted to acquire physical property data of SRM slag by JAXA. After the grand firing test of small SRMs, all slag was collected and analyzed. This study describes the investigation results regarding the characteristics of SRM slag and the current possible scenario of the slag particle formation process.
Assessing the effects of critical parameters in standoff bonding
Authors: Batzilis O , Rodriguez S , Blasakis N , Baltopoulos A , Janik P , Stimoniaris A 
Published: August 2023

Abstract
In this contribution we present the effect of several parameters that are critical for bonding standoffs onto the surface of spacecrafts’ panels with polymeric adhesives. Standoffs are an integral part of the thermal management of space satellites since they ensure that the MLI blankets are mounted and maintained in the correct position during the whole mission duration, including launch. In the recent years, there have been several de-bonding problems during qualification phases, leading to long and costly delays, oftentimes caused from poor design and preparation[1]. For these reasons, we have performed a study of the bond strength of Torlon® 5030 rods bonded over sandwich panels made of an aluminium honeycomb core and CFRP skins. The bond strength was determined by mechanical tests, conducted in tensile and shear modes, both prior and after thermal cycling. Thermal analysis was also performed on the main components under study. The study consists on the following steps: first, different surface treatments of the CFRP skins have been investigated: (i) bonding standoffs with the surface as manufactured, (ii) cleaned with a solvent and (iii) mechanically sanded before cleaning. The best performing treatment was selected and used systematically in the rest of the study. Afterward, different types of adhesives (epoxy, graphene nano-enabled epoxy, polyurethane) and bond-line thicknesses were studied. The findings of this study can help to steer the industry towards better practices regarding the standoff bonding. This will improve the integrity of future space missions.
High temperature high voltage potting adhesive
Authors: Liémans Isabelle , Petiniot Geoffroy , Vandeplassche Philippe , Daclin Déborah , Holynska Malgorzata , Franke Andreas 
Published: August 2023

Abstract
This study presents the results of a new resin survey for potting of high voltage electronics. The main objective consists in improving the European manufacturing capability for high voltage (>6 kV) and high temperature applications (maximum temperature: 180°C). The targeted improvements include enhanced thermal stability and insulation properties of adhesive potting for high voltage applications for a target lifetime of 15 years. In addition, a specific attention has been given to EU sourced materials for development. Class H resins were targeted. A trade-off based on technical data sheets, tests at material, sample and breadboard levels has been conducted. The complete test sequence performed lead to identify a resin suitable for the requirements and processes. TRL4 has been reached, but there is still a long way to go and use it in a space product. The next steps are the implementation of this new resin in the current equipment and the qualification of magnetics parts impregnated or moulded with this resin.
Evaluation of advanced cleaning processes for sensitive surfaces in optical instrumentation
Authors: Cheung D , Faye D 
Published: August 2023

Abstract
Contamination has become a major issue in all high-tech industries, with increasingly stringent cleanliness requirements. It is the case for sensitive parts of space flight hardware, such as optics or other embedded equipment for which surface cleanliness is a critical topic, since even a thin layer of contaminant can adversely affect performance. Sometimes, cleaning may be needed to reach a specified cleanliness surface level at different integration phases of instrument or satellite, or as a corrective action in case of anomaly. Thus it is recommended to consider cleaning techniques without direct contact with the sensitive or fragile surface to prevent any damage after treatment. Five processes or techniques among those described for instance in the ECSS standard dedicated to ultracleaning of flight hardware (laser, vacuum bakeout, carbon dioxide (CO2) snow, supercritical CO2 and plasma) have been chosen for a test campaign to assess their efficacy on representative samples of sensitive optical parts (e.g.: glasses, mirrors, treatments, coatings, etc.). The study has been focused on the removal of molecular residues from substrates intentionally contaminated by a mixture of typical chemical contaminants. After a description of the selected cleaning techniques and their pros and cons, this paper will present the methodology adopted for the process validation using analytical chemistry and the comparative results of the performance of each cleaning technique. The impact on materials and the ease of implementation have been evaluated as well. In fine, the objective of this study is to provide some guidance to choose one or several non-contact processes suitable for cleaning sensitive space hardware, in order to guarantee contamination-free surfaces before flight and limit any risk of failure.