bluuebunny/crossref_metadata_2025 huggingface dataset:
An excellent water-stable 3D Zn-MOF with 8-fold interpenetrated diamondoid topology showing “turn-on/turn-off” luminescent detection of Al3+ and SNT in aqueous media
Authors: Gao Xiuting , Wang Xiaohe , Feng Miaomiao , Yang Ming , Zhang Qingfu
Published: November 2021

An excellent water-stable 3D Zn-MOF with 8-fold interpenetrated diamondoid topology acts as a bi-responsive chemical sensor for “turn-on” and “turn-off” luminescent detection of Al3+ and SNT in aqueous media, respectively.
Recent advances in dye and metal ion removal using efficient adsorbents and novel nano-based materials: an overview
Authors: Badawi Ahmad K. , Abd Elkodous M. , Ali Gomaa A. M.
Published: November 2021

Various materials including waste precursors used as adsorbents for water treatment (dyes and metal ions removal).
0D–1D hybrid nanoarchitectonics: tailored design of FeCo@N–C yolk–shell nanoreactors with dual sites for excellent Fenton-like catalysis
Authors: Wang Chaohai , Wang Hongyu , Na Jongbeom , Yao Yiyuan , Azhar Alowasheeir , Yan Xin , Qi Junwen , Yamauchi Yusuke , Li Jiansheng
Published: November 2021

Novel 0D–1D hybrid nanoarchitectonics consisting of FeCo@N–C yolk–shell nanoreactors are developed for Fenton-like reaction. With the multilevel advantages of this design, FeCo@N–C nano-necklaces exhibit excellent performance for BPA removal.
Study of multi-electron redox mechanism via electrochromic behavior in hexaazatrinaphthylene-based polymer as the cathode of lithium–organic batteries
Authors: Chen Zhangxin , Mei Shiwei , Li Weijun , Xu Ning , Dong Yujie , Jin Yanxian , Ouyang Mi , Zhang Cheng
Published: November 2021

The novel six electron redox mechanism of hexaazatrinaphthylene-based polymer was found via electrochromic behavior and UV spectrum.
Pan-cancer analysis of N4-acetylcytidine adaptor THUMPD1 as a predictor for prognosis and immunotherapy
Authors: Li Kuangxun , Liu Junzhe , Yang Xinyu , Tu Zewei , Huang Kai , Zhu Xingen
Published: November 2021

Background: THUMPD1 is a specific RNA adaptor that assists acetylation of mRNA and production of N4-acetylcytidine (ac4C). However, it remains unclear whether THUMPD1 plays a part in tumorigenesis and therapeutic efficacy. Here, we analyzed the expression profiles and prognostic value of THUMPD1 in pan-cancer and gained insights into the correlation between THUMPD1 expression level and immunotherapy efficacy.

Methods: Gene expression pattern and its correlation with prognosis, immune cell infiltration in pan-cancer were obtained from Genotype-Tissue Expression (GTEx), Cancer Cell Line Encyclopedia (CCLE) and The Cancer Genome Atlas (TCGA) databases, with Kaplan–Meier method and Spearman correlation analysis used. Western blotting and immunofluorescence on clinical samples were performed to validate our database-derived results. Correlation between THUMPD1 expression level and immunotherapy responses was also explored, based on clinical cohorts receiving programmed cell death protein 1 ligand (PD-L1) antibody therapy. Finally, gene set enrichment analysis (GSEA) was performed to show the possible tumorigenic mechanism.

Results: THUMPD1 was highly expressed in most cancer types, and this elevated expression indicated poor or improved prognosis for different cancers. In kidney renal clear cell carcinoma (KIRC) and rectum adenocarcinoma (READ), patients with higher THUMPD1 expression exhibited a better prognosis, while liver hepatocellular carcinoma (LIHC) patients had worse prognosis. Besides, THUMPD1 was significantly associated with immune cell infiltration, tumor mutational burden (TMB), microsatellite instability (MSI), immune checkpoints and neoantigen in many cancer types. Further, more clinical advantages and therapeutic responses were observed in patients with high THUMPD1 expression.

Conclusions: THUMPD1 may serve as a novel predictor to evaluate cancer prognosis and immune therapy efficacy in diverse cancer types.
Motherhood in the Academy: A Qualitative Study of Experiences in Communication Sciences and Disorders
Authors: Stead Amanda , Mandulak Kerry Callahan , Wong Sami , Dirks Kyla , Dolata Jill
Published: November 2021

Purpose:

Research has repeatedly shown that having children negatively affects the early academic careers of women. The purpose of this exploratory study was to investigate whether this well-established negative impact in “science, technology, engineering, and math” applies to the discipline of communication sciences and disorders (CSD) as well as to examine what solutions or supports would ensure their retention and success.

Method:

A national survey of 84 academic mothers in CSD was conducted to capture their experiences. An inductive, qualitative approach to the analysis of the survey transcripts was implemented to distinctly understand the participants' views and experiences of the interaction of motherhood and their academic careers. Qualitative research methods were used to provide a systematic way to explore complicated subjects that cannot be isolated from their contexts.

Results:

Analyses of the survey data revealed five major themes, including
Balance, Expectations, Support, Solutions,
and
Fertility
. Results of the survey indicate that academic mothers broadly feel as though they are being asked to choose which aspect of their lives they care about more (career or family). They also indicated that simple solutions, many of which have been implemented at various academic institutions, would alleviate many of their barriers to success and well-being.

Conclusions:

The findings of this exploratory study emphasize alignment with national data detailing the barriers academic mothers face within the academy within the discipline of CSD. Implications for change include developing supportive cultures around families, support with child care financials and logistics, autonomy around scheduling, and flexible positions.
Analysis, prevention, and feasibility assessment of stealthy ageing attacks on dynamical systems
Authors: Escudero Cédric , Massioni Paolo , Zamaï Eric , Raison Bertrand
Published: November 2021

This article provides control theory methods to analyse, prevent, and assess the feasibility of stealthy ageing attacks on controlled physical systems, modelled as dynamical systems. This new type of attacks leads to premature failures of the physical system by accelerating its ageing and remains stealthy by maintaining the system outputs as in the attack‐free case. An attacker with restrained capabilities is considered: it can only corrupt the control signals transmitted to the dynamical system. This article provides set‐theoretic methods to analyse and prevent these attacks by restraining the control signals in amplitude, whether the system is stable or not. The proposed methods consist in solving optimisation problems under Linear Matrix Inequality constraints. Then, a method based on linear programming is proposed to assess the feasibility of such attacks by finding the optimal attack control signals. At the end of this article, the methods are applied on two application examples to show their relevances: a thin film manufacturing and a satellite reorientation manoeuvre.
Temperature estimation of water cooling stator windings considering twisted structure and resistance distribution
Authors: Bian Xu , Zhao Yan , Liang Yanping
Published: November 2021

The twisted structure of strand is ignored and the resistance of all parallel copper strands is assumed to be at the same temperature in existing temperature estimation method of water cooling stator windings. However, the twisted structure leads to the changing of thermal source and cooling structure, the uneven thermal distribution of parallel copper strands leads to uneven resistance distribution, both of which will influence thermal distribution of stator windings and should be considered in the temperature estimation method. In this study, the temperature estimation method considering twisted structure and uneven resistance distribution is first proposed, called three‐dimensional (3‐D) network method, in which the nodes of circuit network and thermal network are completely consistent. Then, the water cooling stator winding of a 1240‐MW turbo generator is taken as an example, the thermal distribution of which are calculated by the proposed method and validated by both short‐circuit type test data and 3‐D finite element method (FEM). Finally, the influence of twisted structure and resistance distribution on the thermal distribution is analysed in detail. The results show that the twisted structure has a great effect on thermal distribution, which cannot be ignored, while the resistance distribution has little effect on thermal distribution.
Numerical Prediction of Two-Phase Flow in Tube Bundles with a CFD Porous Media Approach Based on Mixture Model and a Void Fraction Correlation
Authors: Dubot Claire , Melot Vincent , Béghein Claudine , Allery Cyrille , Bonneau Clément
Published: November 2021

Being able to predict the void fraction is essential for a numerical prediction of the thermohydraulic behaviour in steam generators. Indeed, it determines two-phase mixture density and affects two-phase mixture velocity which enable to evaluate the pressure drop of heat exchanger, the mass transfer and heat transfer coefficients. In this study, the flow is modelled by coupling Ansys Fluent with an in-house code library where a CFD porous media approach is implemented. In this code, the two-phase flow has been modelled so far using the Eulerian model. However, this two-phase model requires interaction laws between phases which are not known and/or reliable for a flow within a tube bundle. The aim of this paper is to use the mixture model, for which it is easier to implement suitable correlations for tube bundles. By expressing the relative velocity, as a function of slip, the void fraction model of Feenstra et al. developed for upward cross-flow through horizontal tube bundles is introduced. With this method, physical phenomena that occur in tube bundles are taken into consideration in the mixture model. The developed approach is validated based on the experimental results obtained by Dowlati et al.
Advanced thermal lattice Boltzmann method for the simulation of latent heat thermal energy in a porous storage unit
Authors: Mabrouk Riheb , Naji Hassane , Dhahri Hacen , Younsi Zohir
Published: November 2021

The current research expounds numerical investigation of key parameters effects, namely porosity ( ε= 0.4, 0.6, 0.7 and 0.8), Reynolds number (Re = 100, 200, 400 and 600) and Eckert number (Ec= 0, 1, 5 and 10) on the forced convective laminar flow and heat transfer through a horizontal porous channel filled with a metal foam structure impregnated with paraffin as a phase change material (PCM). The Darcy-Brinkman-Forchheimer model under the local thermal non-equilibrium (LTNE) condition is deemed at the representative elementary volume (REV) scale. The fully coupled equations of Navier-Stokes, Poisson’s equation, energy equations, and continuity equation were handled numerically via a thermal single relaxation time lattice Boltzmann method (TSRT-LBM). To facilitate implementation, all LB equations are based on the same speed discretization scheme (D2Q9). Three-population distribution functions were applied to simulate the fluid flow, and temperatures of the fluid and solid phases. Previously, the numerical model was validated by available cases. Then, a comprehensive investigation has been performed to investigate the influence of the aforementioned dimensionless numbers. All LBM results are found to be highly consistent with other numerical works. The outcomes reported that at lower porosities, the energy and exergy efficiencies increased with increasing Re and Ec. However, for large porosity values, the efficiencies were optimum for a critical Re ~ 400. To sum up, it can be stated that the implemented thermal lattice Boltzmann method has been demonstrated as a suitable approach study the thermal sensible energy storage.
Numerical Study of the Performance Loss of A Centrifugal Pump Carrying Emulsion
Authors: Achour Lila , Specklin Mathieu , Belaidi Idir , Kouidri Smaine
Published: November 2021

The performance and hydrodynamic behavior of centrifugal pumps when handling two-phase liquid-liquid flow and emulsion remain relatively unexplored, although they are of fundamental importance in optimizing the operating conditions of these pumps. Hence, this study aims at investigating the performance degradation of a centrifugal pump under emulsion flow by combined means of analytical and computational fluid dynamic (CFD) models. The analytical approach is based on internal energy loss equations while the CFD approach models the emulsion as a continuous and homogeneous single-phase fluid exhibiting shear thinning behavior. The results give a good insight into the performance degradation of such a system, especially at the best efficiency point (BEP).
Development of a heat exchanger for cogeneration via TEG
Authors: Pfeiffelmann Björn , Diederich Michael , Benim Ali Cemal , Hamberger Andreas , Heese Markus
Published: November 2021

To develop an innovative cogeneration biomass boiler, which uses thermoelectric generators (TEG), a simplified model of the heat exchanger is created and the design is optimized. The boiler with a thermal power of 200 kW will partly convert the heat into electricity. The maximum temperature of the hot side of the TEG should not exceed 300°C to avoid damage. While holding these requirements the cost and the installation space of the heat exchanger should be as low as possible, with a minimal effort for the flue gas blowers at once. Following these objectives, the simplified heat exchanger model is optimized with NOMAD optimization algorithm. Out of the resulting Pareto front two heat exchanger designs are discussed.
CFD Analysis to explain the Operating range extension observed during Operation in Co-rotating Mode of a Twin-impeller Centrifugal Compressor
Authors: Nguyen Van-Thang , Danlos Amelie , Ravelet Florent , Deligant Michael , Solis Moises , Khelladi Sofiane , Bakir Farid
Published: November 2021

Centrifugal compressors are widely used in many industrial applications because of their advantages. However, these turbomachines suffer at a low-flow rate from instabilities, such as rotating stall and surge. That leads to operational failure, pressure fluctuations and vibrations of the thorough system. Many mechanical solutions minimize these instabilities and expand the operating range towards low-flow rates like active control of the flow path, variable inlet guide vane and casing treatment. Currently, our team has developed a new compressor composed of a twin-impeller powered by autonomous systems. We notice the performance improvement and instabilities suppression of this compressor experimentally. In this paper, a CFD study is presented to explain some of these experimental observations by analyzing the inside of twin-impeller, the flow structures and thermodynamic characteristics at low flow rates operating in a co-rotating mode. Numerical results and experimental measurements of compressor maps are consistent.
Study on The Effect of Different Plenum Chamber Coefficients on Frosting of Air-cooler
Authors: Liu Bin , Shi Shengqiang , Liu Yongshan , Bennacer Rachid , Chen Aiqiang , Theodorakis Panagiotis E.
Published: November 2021

The performance of the air-cooler in the refrigeration system plays a key role in improving the energy efficiency. Here, the plenum chamber coefficient was defined to study a possible way of enhancing the refrigeration system performance. In order to investigate the influence of the plenum chamber coefficient on the frosting and the cooling system of the chillers, three plenum chamber coefficients (0.74,0.97,1.2) were studied under high humidity. The temperature decreasing curve of the environmental chamber, the velocity distribution of the air cooler, and the frost accumulation under and on the air-cooler were analysed. The results show that the frost accumulation on the tube will increase with the increase of the plenum chamber coefficient and the frost accumulation on the fin will increase at first and then decrease with the increase of the plenum chamber coefficient. On the whole, in this study, frosting is the most obvious when the plenum chamber coefficient was 0.97
The length-weight relationships and condition factor of an endemic Marosatherina ladigesi Ahl, 1936 in Walanae Cenranae River Watershed, South Sulawesi, Indonesia
Authors: Nasyrah Adiara Firdhita Alam , Rahardjo Muhammad F. , Simanjuntak Charles P. H. , Nur Muhammad
Published: November 2021

Marosatherina ladigesi is an endemic fish species in South Sulawesi and is famous as ornamental fish. However, the biological information of this species is still restricted. This research direct analyzes the length-weight relationships and condition factors of M. ladigesi. Sampling was held monthly from May 2018 to April 2019 in the Walanae Cenranae River Watershed, South Sulawesi. Fish samples were assembled by seine net. A total of 550 M. ladigesi were collected consisted of 227 fish in Camba River, 88 fish in Sanrego River, and 235 fish in Batu Puteh River. The length-weight relationship of male and female fish was W = 0,0002L2,74 and W = 0,00004L3,23 in Camba River, W = 0,0001L2,78 and W = 0,0001L2,92 in Sanrego River, W = 0,0001L2,88 and W = 0,00006L3,12 in Batu Puteh River, respectively. In Camba and Batu Puteh Rivers, the growth pattern of male and female fish were negative allometric and positive allometric, respectively. Conversely, the growth patterns of male and female fish in the Sanrego River were isometric. The condition factor fish in Sanrego River was lower than Camba and Batu Puteh River. These findings are valuable data for establishing a monitoring and conservation of this endemic species in its habitat.
Diversity pattern and juvenile fish assemblage in the nearshore habitats of the Sumbawa Island, Indonesia
Authors: Abdillah Didit , Simanjuntak Charles P.H. , Rahardjo Muhammmad. F. , Djumanto  , Kautsari Neri , Saputra Aan
Published: November 2021

The coastal ecosystem plays a vital role as essential habitat for juvenile and small marine fishes. This study aimed to analyze juvenile and small-sized fish assemblage in the nearshore habitats of Sumbawa Island. Sampling was carried out in the morning at low tide when new and full moon from November 2020 to January 2021. Five sampling sites were selected based on habitats their adjacency to the river mouth. During the study period, 6349 individuals belonging to 74 species and 37 families were recorded. The number ofAmbassis vachelliiwas the most significant, followed byHypoatherina temminckii, andEubleekeria splendens. The highest fish biomass was occupied by E. splendens, followed by Plotosus lineatus, andPlaniliza macrolepis. Physico-chemical parameters were not varied between sampling sites, except salinity. Estuaries with vegetated areas have a higher species richness, diversity, and evenness index than the unvegetated area. Juvenile and small-sized fishes varied between sites but not varied between moon phases. Research findings confirm that the nearshore habitat of Sumbawa Island has a significant capacity to support the early life stage of many marine fish species.
The reproduction viability of Indonesian endemic fishOryzias marmoratus(Aurich, 1935) fed bySpirulina
Authors: Said Djamhuriyah S. , Mayasari Novi , Satya Awalina , Chrismadha Tjandra , Febrianti Dwi
Published: November 2021

Oryzias marmoratusis one of the ornamental aquarium fish species that live endemic to Towuti Lake, South of Sulawesi, Indonesia. However, the fish has been categorized as near threatened by IUCN. A current report showed the fish could be cultivated. This research aims to improve the reproduction quality in cultivation by using artificial feed containingSpirulina(A=0, B=3, and C=6) % dry weight. The study was conducted with two replications using an aquarium (80 x 40 x 40 cm) for 40 days (October-December 2020) at Research Center for Limnology-LIPI. Each aquarium contains 21 broodstock (female: male = 2:1). Observation parameters are the total number of spawning/ToS (time), ovulated eggs number/OEN, fertilization ability/FA (%), hatching ability/HA (%), number of larvae/NoL, the egg of incubation time/EIT (day), survival of larvae seven days old after hatching/SR7 (%). Based on descriptive analysis, the use of feed C (containing 6%Spirulina) produced the highest values of ToS, OEN, %HA, NoL, and SR7 (%) were ten times; 89 eggs; 89 larvae, 100%; and 98.89±3.51% respectively.Spirulinacould increase the reproduction viability and is presumed to enhance feed efficiency ofOryzias marmoratus, but the optimum levels have not been obtained.
Key elements in the implementation of escape gaps recommendations for the protection of juvenile vulnerable squaretail coralgroupers (Plectropomus areolatus) in Karimunjawa Island
Authors: Maulina Irma Dwi , Purbayanto Ari , Nurani Tri Wiji , Dharmawan Vito
Published: November 2021

IUCN classified squaretail coralgroupers into vulnerable status. If this is ignored, there may be a risk of threatening its sustainability and changing its status to endangered. This condition needs proper regulation concerning juvenile protection. Escape gap recommendations are considered to be the proper solution for this particular issue because juveniles were able to release without reducing fishermen's revenues. When implementing an escape gap, various elements support failure and success. Therefore, it is necessary to know what elements will have an effect so that the program could implement successfully. This study aims to identify key elements in escape gap implementation. The key elements are identified through Interpretive Structural Modelling. This method is carried out systematically by ranking several elements that influence the implementation. The result showed that the implementation of the escape gap required prioritizing key elements. These keys are releasing juvenile grouper with high survivability (objectives), trial use of the escape gap on the trap (activities), worries of income reduction (obstacles), Marine and Fisheries Departments of Central Java (institutions involved), and fishermen (affected communities). These key sub-elements will drive other sub-elements to implement the escape gap in trap fisheries successfully.
Composition of reef fish as a success indicator of the bio-transplants method in Tunda Island, Serang Regency, Banten Province
Authors: Mujiyanto  , Syam A. R. , Nastiti Adriani. S.
Published: November 2021

The Bio-Transplants method is a coral grafting method by inoculating coral seedlings/fragments using natural materials. They are dead corals in the DC and DCA categories as a place of attachment. This study aims to see the success of the Bio-Transplants method in compiling indicators of fish species associated with the field of Bio-Transplants. They have conducted this research in 10 x 10 square meters on the north side of Tunda Island waters in July 2019 (T0), November 2019 (T1), and July 2020 (T2). The sampling method used a stationary visual census. In July 2019, as many as 11 species from 7 families, November 2019 was 31 species from 10 families, and July 2020 was 47 species from 10 families. Composition of fish species as an indicator of the health of coral ecosystems from the Chaetodontidae family fish species. In July, when Bio-Transplants started production, there were no fish groups from the Chaetodontidae family. The composition of the fish species found in November was Chelmon sp. and Henichus varius. After its age, the Bio Transplants area was one year (July 2020) consisting of 4 fish species from the family Chaetodontidae, namely: Heniochus chrysostomus, Chaetodon trifasciatus, Chelmon sp., and Heniochus varius.
Reassessment of the mitochondrial 12S-rRNA gene for DNA barcoding of museum specimens of shelled marine gastropods from Japan
Authors: Fukunaga Nao , Shimizu Moe , Teruya Shinnosuke , Razali Nazifa Naziha , Nakashima Satoko , Tomobuchi Naoto , Sasaki Takenori , Setiamarga Davin H. E.
Published: November 2021

DNA barcoding is an effective and powerful tool for taxonomic identification and thus very useful for biodiversity monitoring. This study investigated the usefulness of the mitochondrial 12S-rRNA gene for the DNA barcoding of shelled marine gastropods. To do so, we determined partial 12S-rRNA sequences of 75 vouchered museum specimens from 69 species of shelled gastropods from Japan. The specimens have been identified morphologically, and natural history data catalog. Sequence analyses through BLAST searches, maximum likelihood phylogenetic analysis, and species delimitation analysis suggested that the 12S-rRNA gene is helpful for barcoding shelled marine gastropods. They thus could be helpful to complement barcoding studies using other markers such as COI. The analyses successfully confirmed all samples’ identity at higher taxonomy (subfamily and above), but much less so at the species level. Our result thus also underlines the lingering problem of DNA barcoding: The lack of comprehensive reference databases of sequences. However, since we provided sequences of properly curated, vouchered museum specimens in this study, our result reported here has thus also helped to give taxonomically reliable reference sequences for biodiversity monitoring and identifications of shelled gastropods which include many important fisheries species.
Efficiency of suspended solid removal from tofu production using Rotating Biological Contractor (RBC)
Authors: Septriani Shafira , Arie Prayogo Norman , Sahri Asrul , Brown Christopher L.
Published: November 2021

Tofu is a common food in Indonesia, made from soybean, and needs gigantic water for the process. The liquid waste of the tofu industry is usually directly discharged into the river without being processed. Liquid wastes of tofu have high organic content and become a problem in water pollution. Rotating Biological Contactor (RBC) is efficient method to treat waste with a high organic matter load by utilizing microorganisms to consume organic matter through biofilms. Biofilm will degrade organic matter aerobically. The purpose of the study is to determine the capability of RBC to reduce the organic content of tofu wastewater with different rotations of the disk. Rotation was experimentally varied from 30, 40, 50, 60 RPM and control. Results were considered in percentage decrease from the untreated waste: TSS of 87.56 ± 6.48%, BOD of 99.13 ± 0.21 %, and COD of 98.53 ± 0.08%. To conclude, the optimum rotation is 50 RPM for decreasing BOD and COD, otherwise 40 RPM for reducing TSS. The results effluent RBC on three parameters passed the quality standards legally for the soybean processing company or activity.
Length-weight relationship and condition factor of endemic fish Bilih (Mystacoleucus padangensis Blkr.) in Lake Singkarak, West Sumatra, Indonesia
Authors: Nasution Syahroma H. , Akhdiana Ira , Suhaemi Syawal M. , Nurhidyat Agus
Published: November 2021

Bilih (Mystacoleucus padangensis) is an endemic species of Lake Singkarak and has important economic value. Overfishing of Bilih fish using non-selective fishing gear has led to a decline in its population. High demand, resulting in decreased production and size of Bilih fish. This research aims to determine this endemic fish's length-weight relationship and condition factor as basic data to the effort conservation. The fish was captured with experimental gillnet mesh sized 5/8, ¾, and 1 inch in Sumani, Batu Taba, Paninggahan, and PLTA intake stations. The total length and the weight of Bilih fish ranged from 40 – 95 mm and 10 – 74 mg, respectively. The highest length and weight of Bilih were 80.3 mm, and 45.0 mg were found at the Sumani station. The growth pattern of male and female fish was a negative allometric characteristic. The length-weight relationship of male and female fish was W = 0.00137 L2.368 and W = 0.00179 L2.312, respectively. Condition factors of males and females are 1.02 and 1.004, respectively. The result of condition factor value for males is higher than the female. The water quality values are within the normal range that supports fish life.
Ectoparasite infestation and Vibrio alginolyticus bacterial infection in super-intensive ponds with high ammonia levels of Penaeus vannamei
Authors: Deriyanti Aprillia , Mahasri Gunanti , Kismiyati
Published: November 2021

Disruption to fish and shrimp farming can be caused by poor water quality or invading pathogens. This study aims to determine the degree of ectoparasite infestation and Vibrio alginolyticus bacterial infection in super-intensive ponds. This study uses a survey method. Water and shrimp sampling was carried out at three stations and two sampling points. The study was conducted from January until February 2020. Water quality, parasite, and bacterial identification were measured at the Jepara Center for Brackish Water Cultivation Fisheries. This study showed that all samples were positively infested with Zoothamnium, Epistylis, and Vorticella parasites. The highest number of Vibrio bacteria was found at an average of 1.16 x 105 cells / mL. Based on Pearson correlation analysis, the relationship between the total number of bacteria and the ectoparasite intensity level in Pacific white shrimp has a value of 0.015 with an R-value = 0.828. This indicates that the presence of high ectoparasite intensity. Water quality data also shows a very close relationship between the level of ectoparasite intensity and the stocking density of vannamei shrimp.
Development potential of native fish in Batang Toru Watershed, North Sumatra, Indonesia: discussion on the impact of dam development and aquaculture efforts
Authors: Shafrudin Dadang , Sulistiono  , Simanjuntak Charles P. H. , Rahardjo M. Fadjar , Wildan Dudi M. , Hestiranoto Totok , Nugroho Thomas , Ismanto Agus Joko
Published: November 2021

As one of the sizable rivers in the Sumatra region, the Batang Toru River is a habitat for various fish species, some of which are potential to be developed as cultured fish. This study was carried out in April, July, and October 2019 in the Batang Toru River watershed of South Tapanuli Regency, North Sumatra, to evaluate a potential development of the riverine fish for aquaculture development. The methods used were fisheries surveys and discussions with various communities and related agencies in the South Tapanuli Regency. The data obtained were presented descriptively. Based on the result of data analysis collected in the field, there were several potential fish species to be cultured in this study, including mahseer (Tor tambroides, T. tambra, Neolissochilus soro), catfish (Hemibagrus spp.), and eel (Anguilla bicolor). Some people in the area have also developed the culture of several fish species, such as mahseer and catfish. However, there has been no eel rearing until now, although some locations around the Batang Toru River are suitable for freshwater fish aquaculture activities.
Safety and efficacy test to immersion vaccine against Streptococcus agalactiae and Aeromonas hydrophila for Tilapia (Oreochromis niloticus)
Authors: Sugiani Desy , Nafiqoh Nunak , Novita Hessy , Sumiati Tuti , Andriyanto Septyan , Taukhid  , Lusiastuti Angela Mariana
Published: November 2021

Alternative prevention should be developed to control disease outbreaks in Tilapia culture caused by co-infections of Aeromonas hydrophila and Streptococcus agalactiae. Applications of vaccines with low cost and simple methods are highly recommended. This study was conducted to find out the safety and the efficacy of immersion vaccine in Tilapia used bivalent vaccines with formalin inactivated of S. agalactiae and A. hydrophila. Tilapia (Oreochromis niloticus) were divided into two groups, vaccinated and not vaccinated, with single and double doses immersion. The results showed that single and double doses of immersion vaccine were safe for fish (SR 100%) and effectively increased the antibody titer values compared to non-vaccinated fish. The immersion vaccine method can be recommended as an alternative to controlled fish diseases, especially for both Motile Aeromonads Septicaemia and Streptococcosis caused by A. hydrophila and S. agalactiae infections, respectively.
Fish catches diversity of the glass eel fishery in Cikaso and Cimandiri estuaries, Sukabumi, Indonesia
Authors: Annida Shafira Bilqis , Zulkarnain  , Wahju Ronny Irawan , Simanjuntak Charles P.H. , Baihaqi Faqih , Prabowo Tri , Budiman Muhammad Syarif
Published: November 2021

Cikaso and Cimandiri estuaries are well known as the central area of glass eel fisheries in Sukabumi Regency. Local fishermen catch glass eels using two main fishing gears, namely traps and lift nets. Although both fishing gears' target operation is glass eels, many other fish species are also caught as bycatch. The present study aimed to identify glass eels and bycatch ichthyofauna in glass eel fisheries of the Cikaso and Cimandiri estuaries, Sukabumi. The research was carried out monthly from November 2020 to January 2021. Glass eels fishing gears collected a total of 21 fish species belonging to 15 families in both estuaries. According to the percentage ano-dorsal length measurement to total length (AD/TL), 3 species of glass eel were identified, i.e. Anguilla bicolor bicolor, A. nebulosa, and A. marmorata. These three species were the most abundant fish catches in both estuaries. More than 18 bycatch ichthyofauna were recorded and most of them are economically important fish, such as Ambassidae, Eleotridae, Engraulidae, Gobiidae, and Polinemidae. To sustain fishery management, the recording bycatch from glass eel fishery in the Cikaso and Cimandiri estuaries is necessary to be done regularly because they contribute to fishing mortality.
The effect of hydrolysis duration on the antibacterial activity of swamp eel head protein hydrolysate produced by papain against histamine-producing bacteria
Authors: Hafifani Witya , Puspita Indun D. , Putra Masagus M. P.
Published: November 2021

Swamp eel (Monopterus albus) processing produced byproducts such as heads that possess a high protein, carbohydrate, lipid, and energies content. Swamp eel heads were hydrolyzed (SEHPH) and tested for their antibacterial activity against histamine-producing bacteria (HPB) to explore the potency. The hydrolysis was conducted by a commercial papain enzyme PAYA (concentration 4%) with various hydrolysis times (0, 60, 120, and 180 minutes) at 60o C with pH 5. The results indicated that increasing hydrolysis time increased solubility and the degree of hydrolysis. The inhibitor concentration 50 test using microdilution of SEHPH inhibited 50% against three HPB named Citrobacter sp. (CK1), Klebsiella sp. (CK13), and Morganella morganii (TK7) at 20 mg/ml. The optimum antibacterial activity test by disk diffusion method was formed by each minute of hydrolysis with the best inhibition zone to Klebsiella sp. (CK13). The macrodillution method showed the highest inhibition was produced by 180 hydrolyses with 45% on CK1, 54% on CK13, and 48% on TK7. These results indicated that SEHPH has potency as an antibacterial agent to reduce histamine-producing bacteria.
Condition of shrimp culture ponds in the South Coast of Cilacap Regency, Central Java, Indonesia
Authors: Utami Ardhana Reswari , Widigdo Bambang , Sulistiono
Published: November 2021

In recent years, aquaculture has begun to develop on the southern coast of Cilacap, which is carried out on sandy land without being surrounded by mangroves and is generally operated with intensive methods. This pool is owned by individuals or companies. This paper aims to descriptively describe aquaculture condition in the area, especially regarding the status, production, and management efforts, based on the results of field observations and literature studies. The area of intensive shrimp cultivation in Cilacap Regency in 2020 is ±227 ha, and the number of cultivators (intensive) is 270 people. The overall value of shrimp production in 2018 in Cilacap Regency was Rp. 52,898,856,945.00, an increase of 38% compared to 2017, which was Rp. 38,446,305.875.00. Adipala Regency has a large pond area, but the production value and production are less than other districts. In the development of ponds, some locations are made quite close to the beach, without a green belt. Seawater is taken directly from the sea by suction using a pump or by drilling. Likewise, freshwater extraction is carried out through drilling into the ground. Wastewater is discharged directly into the sea because there is no Wastewater Treatment Plant (WWTP).
Performance analysis and mentoring strategy of fish farmers groups in Muntilan Sub District, Magelang Regency, Central of Java Province
Authors: Restuwati Ina , Munif Achmad K. A.
Published: November 2021

The purpose of this research was to identify performance and determine the strategy for improving the performance of fish farmers groups in this area, which has excellent and dominant potential in freshwater aquaculture. There were about 131 fish farmers and 11 fish hatchery and rearing groups from this region's six research sample villages. The identification results of the fishbone diagram analysis showed that the fish farmer group's growth and development, in general, were still low, based on several dominant categories, namely infrastructure, fisheries extension performance, contribution performance, and the interests of fish farmers. In detail, the causes were: 1) insufficient facilities and infrastructure; 2) management in implementing fish farmers groups function has not run optimally; 3) the lack of fisheries extension workers; 4) the lack of contribution among group members; 5) relationship between fish farmers groups and local government institutions was still low; 6) fisheries activities were dominated by certain people; and 7) the interests of the fish farmers to form groups were still low. As the results of the SWOT analysis, the fish farmers group's performance development strategy was carried out by improving the performance of group roles and functions through mentoring and facilitating group activities.
Otolith shape as a tool for representing different growth in young and adult yellowfin tuna (Thunnus albacares, Bonnaterre, 1788)
Authors: Sulistyaningsih Ririk Kartika , Setyadji Bram , Hartaty Hety , Wujdi Arief
Published: November 2021

The stock status of yellowfin tuna (Thunnus albacares) (YFT) in the Indian Ocean is currently concluded overfished and is subject to overfishing. The information about the YFT population structure is fundamental for effective fisheries management and conservation. The otolith shape as a tool for estimating population structure is the cheapest technique compared to other methods, such as genetic, parasite, and otolith chemistry, especially for analyzing the large samples. This study investigates the use of otolith shapes to determine the yellowfin stock from two different locations. Data collection was carried out at two locations, namely Kedonganan and Benoa, throughout 2018. Total samples collected from the two study sites were 314 otoliths, but only 147 whole otoliths could be analyzed. Image analysis was performed using ANOVA-like permutation (n=1000 to determine whether the individual can be reclassified to their sample origin. The subsequent analysis is the variations in the shape of the otolith with multivariate statistical methods using cluster analysis with Canonical Analysis of Principal Coordinates. The result shows that the YFT otolith Benoa is significantly different from the YFT otolith Kedonganan with the P-value = 0.0015.
Utility of Batang Toru River (North Sumatra, Indonesia) for fishery activities of the local communities: a study on fisheries socioeconomic condition
Authors: Nugroho Thomas , Simanjuntak Charles P. H. , Sulistiono  , Rahardjo M. Fadjar , Shafrudin Dadang , Hestiranoto Totok , Ismanto Agus Joko
Published: November 2021

Batang Toru River is a river that crosses several sub-districts in North Tapanuli and South Tapanuli Regency and has social and economic benefits for the community. This study aimed to determine the fisheries' socio-economic condition of the community around the river. Study was carried out in August 2019, on the communities around the river in five districts, namely Sipirok district (Luat Lobang and Aek Batang Paya Village), Marancar District (Marancar Julu, Pasar Sempurna, Simaninggir, and Huraba Village), Batang Toru District (Sipenggeng and Hapesong Baru Village), Muara Batang Toru District (Bandar Hapinis Village), and Simangumban District (Simangumban Jae Village). The data collected were analyzed descriptively. Based on the study, the local communities usually used the river for fishing, although fishing was not their main occupation. The fish caught were generally for their consumption or sold in the surrounding village.
Sustainability status analysis of shrimp production management at Cilacap Regency, Central Java, Indonesia
Authors: Nugroho Untung Adi , Siswantining Titin , Budiharsono Sugeng
Published: November 2021

Shrimp is one of the main export commodities of the Indonesian fishery, which is produced from various regions. One of the areas that become the center of shrimp production is Cilacap Regency. The main type of shrimp commodity in Cilacap is banana shrimp (Fenneropenaeus merguensis de Man) which has high economic value. The production of banana shrimp in Cilacap is declining. This study aimed to analyze the sustainability status of banana shrimp management in Cilacap waters in a multidimensional base (Multidimensional Scaling/MDS) which is seen through the ecological, social, economic, ethical, technological, and institutional dimensions. The tool used to analyze the sustainability status is the Rapid Appraisal for Fisheries (Rapfish). This research shows that the sustainability value of banana shrimp management reaches 49.68 or is in the Less Sustainable status. Referring to the sustainability analysis results on each dimension, it can be seen that the economic dimension is the dimension with the lowest sustainability status. This is due to the low income of the fishermen on the results of the shrimp catch. From the sustainability status of shrimp management, it is necessary to take strategic steps to improve the sustainability status of shrimp management in Cilacap Regency.
The effect of casting speed on slag-inclusion defects in 1050 × 200 mm ultra-low-carbon automobile steel slabs
Authors: Li Shujun , Du Xueyan
Published: November 2021

The effect of casting speed on slag-inclusion defects in 1050 × 200 mm ultra-low-carbon automobile steel (UAS) slabs was studied by performing nail plate experiments and by monitoring the liquid level fluctuations during the continuous casting process. The number, location, length, and proportion of slag-inclusion defects in hot-rolled coils produced at different casting speeds were analyzed. The results showed that the defects in the hot-rolled coils were mainly owing to the mold protective slag. For the continuous casting speed of 1.6 m/min, the fraction of slag-inclusion defects was the lowest (at 5.3%), and the number of slag-inclusion defects was lower than for the other casting speeds. The length of slag inclusions was under 900 mm. Furthermore, the number of slag-inclusion defects on the upper and lower surfaces was smaller than those for the other casting speeds. At different casting speeds, slag-inclusion defects mainly existed within 100 mm of the edge on both surfaces of hot-rolled coil plates. The fluctuation within the 0–1 mm range was 98.1% for the casting speed of 1.6 m/min, indicating that the flow rate of molten steel on both sides of the nozzle was relatively stable, which helps to control slag-inclusion defects in hot-rolled coils.
Mise en place et évaluation préliminaire d’un séminaire de formation à l’entretien motivationnel pour des internes de psychiatrie de première année
Authors: Raki Abderrahmane , Navarro Nicolas , Arbus Christophe , Salles Juliette
Published: November 2021

Introduction : La formation spécialisée en psychiatrie vise l’acquisition de savoirs et de compétences. L’acquisition de capacités en liens avec les techniques d’entretien en constitue une composante importante. Parmi elles, l’entretien motivationnel est une technique d’entretien spécifique dont la maîtrise devrait être acquise durant l’internat. Objectif : Rapporter la planification et l’évaluation préliminaire des effets d’un dispositif d’enseignement de l’entretien motivationnel destiné à des internes en première année de diplôme d’études spécialisées (DES) en psychiatrie. Méthodes : Un séminaire de deux demi-journées, comportant une partie théorique et un enseignement pratique à base de jeux de rôle, a été élaboré et mis en œuvre pour les internes de première année du DES de psychiatrie de l’Université de Toulouse. Les apprentissages et la satisfaction des participants ont été évalués en recourant à des questionnaires administrés avant le séminaire, après le séminaire et trois mois après sa fin. Résultats : Dix-huit internes ont participé à au moins une des deux sessions. Les taux de réussite moyen au test d’évaluation des connaissances déclaratives étaient respectivement de 45,4 %, 94,5 % et 87,8 % avant le séminaire, à la fin du séminaire et trois mois après la fin du séminaire. Trois mois après le séminaire, 77,7 % des internes considéraient avoir utilisé souvent ou très souvent l’entretien motivationnel dans leur pratique courante et 66,6 % que l’amélioration de leur niveau de compétence en entretien avait été importante ou très importante. Conclusion : Un dispositif pédagogique de durée courte, spécifiquement dédié à l’enseignement et l’apprentissage de l’entretien motivationnel, a permis des apprentissages significatifs, en répondant aux attentes de formation des étudiants concernés et en améliorant leur sentiment de compétence en entretien motivationnel.
Halogens—‘Letting go’ of the ‘Ex Factor’
Authors: Acharya Anit
Published: November 2021

De halogenen behoren op grond van hun positie in het periodiek systeem tot Groep VIIA. Dit betekent dat zij zeven valentie-elektronen hebben en een extra elektron nodig hebben om het octet te completeren, hetgeen wijst op hun snelle reactieve vermogen. Het kernthema van de halogenen is het gevoel verraden of gekwetst te zijn. Om met dergelijke gevoelens om te gaan, klampen zij zich vast aan de mensen om hen heen. Om te voorkomen dat de relatie wordt verbroken, grijpen zij naar dingen waarnaar zij verlangen en proberen zij te vluchten om de afwijzing niet onder ogen te hoeven zien. Zij beseffen hun vergissing wanneer zij toch afgewezen worden en houden ze dan op tegen te stribbelen. Ze “laten de situatie los”; ze wenden zich af. Dit zijn de mislukte kanten van halogenen. Het voorvoegsel in dit stadium is ‘ex’. Ze zetten zichzelf vrijwillig of gedwongen uit de situatie; expiratie, geëxcommuniceerd, extravagant. De halogenen en andere anionen hebben het gevoel dat zij, om niet gekwetst te worden, iets moeten doen, handelen, presteren; daarom worden zij “doeners” genoemd. Met het begrijpen van de halogenen vanuit het psychologische perspectief wordt ons begrip van deze groep samenhangend.