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    Wyświetlanie 1-15 z 15
    Tytuł:
    Characteristics of Gillnet Fishing Gear and Vessel Construction in Fish Landing Base of Karangsong, Indramayu, Indonesia
    Autorzy:
    Apriliani, Izza M.
    Hasan, Zahidah
    Junianto, Junianto
    Kusnadi, Nadia Maudina
    Powiązania:
    https://bibliotekanauki.pl/articles/1076849.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    construction
    fishing ports
    fishing units
    gillnetter
    millenium net
    Opis:
    This research study was intended to provide information in order to model an ideal construction of Gillnet fishing practices in PPI Karangsong, in order to support the feasibility of optimum catch. Fish Landing Base (PPI) Karangsong is the most active fishing port in Indramayu. The dominant fishing activity in the Karangsong PPI is gillnet fishing at around 71.4% of the total fishing units. The type of gillnet utilized in Indramayu is commonly called the ‘gillnet millennium’ and it is constructed out of Poly Amide monofilament. The gillnet vessel itself has a hull shaped in the form of a hard chin bottom. Based on this research, it can be concluded that each region has specific fishing unit characteristics that vary in accordance with the conditions of the waters.
    Źródło:
    World News of Natural Sciences; 2019, 23; 75-83
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of concentration of Osteochilus hasselti (Valenciennes, 1842) skin gelatin on ice creams preferences level
    Autorzy:
    Fadhiilah, Fadhiilah
    Junianto, Junianto
    Zahidah, Hasan
    Rochima, Emma
    Powiązania:
    https://bibliotekanauki.pl/articles/1062757.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Javakarp
    Osteochilus hasselti
    Osteochilus vittatus
    gelatin
    ice cream
    nilem fish
    preference level
    skin
    Opis:
    This research aims to determine the concentration of the use of nilem skin gelatin in order to obtain the most preferred ice cream. The treatment is the concentration of the use of nilem skin gelatin 0.2%, 0.3%, 0.4%, and CMC 0.4% (control) of the total mixture of ice cream ingredients (full cream milk powder, skim, stabilizer, emulsifier, and water) with 4 repetitions. The parameters observed were the level of preference for the color, aroma, texture, and taste of ice cream. The most preferred ice cream is obtained by using nilem skin gelatin at a concentration of 0.4%.
    Źródło:
    World Scientific News; 2019, 133; 145-157
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study of Freshness of Mackerel (Rastrelliger kanagurta (Cuvier, 1816)) at Rancaekek Market, Resik Market, and Tanjungsari Market
    Autorzy:
    Hakim, Ghifar
    Junianto, Junianto
    Liviawaty, Evi
    Hasan, Zahidah
    Powiązania:
    https://bibliotekanauki.pl/articles/1158254.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Freshness
    Mackerel
    Rancaekek market
    Rastrelliger kanagurta
    Resik market
    Tanjungsari market
    Opis:
    This research aims to know the level of freshness of mackerel (Rastrelliger kanagurta (Cuvier, 1816)) contained in Rancaekek market, Resik market, and Tanjungsari market. Methods of the research was survey methods and the level of freshness of the sample using organoleptic test. The samples were observed organoleptically including the appearance of the eyes, gill appearance, mucus appearance, meat condition, aroma, and texture. Based on observations on the freshness of mackerel from the parameters of eye appearance, gill appearance, mucus condition, meat condition, aroma, and texture, it can be concluded that the fish marketed by Rancaekek market scored 7.1, which means that it is in the fresh category, fish marketed in the Resik market got a score of 7.4, which means it is in the fresh category, and the fish marketed by the Tanjungsari market gets a score of 6.9, which means that it is within the fresh limit.
    Źródło:
    World Scientific News; 2018, 114; 1-14
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The utilization of lactic acid bacteria from rusip to inhibit the formation of histamine on salted-boiled mackerel tuna - Euthynnus affinis (Cantor, 1849)
    Autorzy:
    Hidayati, Nurul
    Afrianto, Eddy
    Hasan, Zahidah
    Liviawaty, Evi
    Powiązania:
    https://bibliotekanauki.pl/articles/1062744.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Euthynnus affinis
    Histamine
    Indo-Pacific region
    Lactic Acid Bacteria
    Rusip
    Salted-Boiled mackerel tuna
    Opis:
    This research aims to determine the best concentration of Rusip fermentation solution for inhibiting histamine formation and its effect on the quality of salted-boiled mackerel tuna (Euthynnus affinis). The studies were conducted in August-September 2018 at the Fisheries Product Processing Laboratory and Microbiology and Molecular Biotechnology Laboratory of Fisheries and Marine Sciences Faculty, Padjadjaran University. This work used an experimental method with 4 variables and 3 repetitions, namely salted-boiled mackerel tuna (Euthynnus affinis) that soaked in rusip fermentation solution with a concentration of 0%, 10%, 20%, and 30% for 30 minutes and storage at some above room temperature (25-27 ºC). Parameters observed included TPC, Histamine levels, pH, and organoleptic values (aroma, appearance, and texture). The result showed that the use of 30% rusip fermentation solution was able to inhibit the formation of histamine and produced the lowest histamine levels of 29.80 mg/100 g. The number of histamine-forming bacteria is positively correlated with histamine content during storage. Based on the organoleptic value (aroma, appearance, and texture), the use of 30% rusip fermentation solution was still received by panelists and fulfilled the best quality requirements according to SNI 2717-1-2009 until the fifth day of storage compared to the other treatments.
    Źródło:
    World Scientific News; 2019, 133; 85-97
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Macrozoobenthos Community Structure in Cijulang River Pangandaran District, West Java Province, Indonesia
    Autorzy:
    Indra, Indra
    Sahidin, Asep
    Andriani, Zahidah dan Yuli
    Powiązania:
    https://bibliotekanauki.pl/articles/1059440.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Bivalvia
    Cijulang River
    Community Structure
    Gastropoda
    Macrozoobenthos
    Neritidae
    Pangandaran District
    Thiaridae
    bioindicator
    Opis:
    Cijulang River, Pangandaran is a river that is used for agriculture, fisheries, industry, household activities and even as a tourist attraction. Macrozoobenthos is a bioindicator that can show changes in the quality of river waters due to these activities. The purpose of this study was to determine the macrozoobenthos community structure found on the Cijulang River, Pangandaran. The research method used is Purposive Sampling. The study was conducted at 4 stations along the Cijulang River from upstream to downstream in September - November 2018. The results of the research on the Cijulang River found 27 species of 5 classes included in 3 fillum namely Mollusca (23 species), Arthropoda (3 species) and Annelida (1 species). The value of macrozoobenthos density in the Cijulang River ranges from 29.7 - 416.3 ind/m2. Diversity index ranges from 1.48 - 2.24. The uniformity index ranges from 0.49 - 0.80. The range of water quality and substrate showed variations and dynamics that were still within the tolerance limits of macrozoobenthos life and water salinity is the main causes of variations in the macrozoobenthos community structure on the Cijulang River.
    Źródło:
    World Scientific News; 2019, 128, 2; 182-196
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of glycerol concentration as a plasticizer on edible films made from alginate towards its physical characteristic
    Autorzy:
    Khairunnisa, Salma
    Junianto, Junianto
    Zahidah, Zahidah
    Rostini, Iis
    Powiązania:
    https://bibliotekanauki.pl/articles/1161470.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    alginate
    edible film
    glycerol
    hydrocolloid
    plasticizer
    Opis:
    This study aims to determine the effects of the addition of the best glycerol concentration as a plasticizer on edible film alginate for tensile strength test, thickness test, percent elongation, and transparency test. The research method used was experimental with a Completely Randomized Design consisting of five treatments and three replications. The treatment of the addition of glycerol concentration was 0.3% based on the volume of solution, 0.5% based on the volume of solution, 0.7% based on the volume of solution, 0.9% based on the volume of the solution, and 1.1% based on the volume of the solution. Observations on the physical characteristics of edible films include thickness, tensile strength, percent elongation, and transparency. The results of the study of physical characteristics of thickness, tensile strength, percent elongation, and transparency concluded that the addition of glycerol concentration in edible films as much as 0,9% was the best treatment based on Japanesse Industrial Standard (JIS) with an average value of 0,094 mm thickness, tensile strength 8,25 MPa, elongation percent value 10,83%, and transparency value is 1,86.
    Źródło:
    World Scientific News; 2018, 112; 130-141
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Knowledge Management: Determine the Influencing Factors for Practicing at the Libraries in Bangladesh
    Autorzy:
    Mamun Sk, Mostofa
    Othman, Roslina
    Zulkifli, Zahidah
    Powiązania:
    https://bibliotekanauki.pl/articles/18676462.pdf
    Data publikacji:
    2023-06-20
    Wydawca:
    Fundacja Pro Scientia Publica
    Tematy:
    Libraries
    knowledge management
    critical success factors
    knowledge management practice
    Bangladesh
    Opis:
    Aim. The main objective of this research is to know the influencing factors for KM practices in the library field of Bangladesh from the user's point of view. Therefore, the study examines the elements influencing Knowledge Management (KM) practice in Bangladeshi university libraries. Methods. Present research used a quantitative approach, by adopting printed survey questionnaire for data collection from the users of the University of Dhaka (DU) and the University of Rajshahi (RU) in Bangladesh. Statistical software IBM®-SPSS® was used for data analysis, and the "partial least squares" (PLS) method was used to test the proposed hypothesis. Results. The findings revealed that KM familiarity and perceptions in gender and current study level varied across users. This study found that all the proposed hypotheses are supported, i.e., the service quality and critical success factors are the most influencing factors for practicing KM in the DU and RU library. Conclusions. The findings provide valuable insights regarding awareness about KM practices and assist university authorities in formulating relevant policies and taking necessary actions for KM practices in libraries. Originality. The present research is one of the first research in Bangladesh that identified the influencing factors of KM from the user’s point of view.
    Źródło:
    Journal of Education Culture and Society; 2023, 14, 1; 672-696
    2081-1640
    Pojawia się w:
    Journal of Education Culture and Society
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Relationship between Benthic Macrofauna Community Structure and Density of Mangrove Vegetation in Mempawah Mangrove Park, West Kalimantan, Indonesia
    Autorzy:
    Noviatri, Syafira Eka
    Zahidah, Zahidah
    Herawati, Heti
    Dewanti, Lantun Paradhita
    Powiązania:
    https://bibliotekanauki.pl/articles/1031497.pdf
    Data publikacji:
    2021
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Community Structure
    Density
    Macro-faunal benthic
    Mangrove
    Mempawah Mangrove Park
    Opis:
    This research was conducted in Mempawah Mangrove Park, West Kalimantan on July – August 2018. The research aims to map the benthic macrofauna community structure and its relationship with the structure of mangrove vegetation. The research method was a survey and use purposive sampling data method in observation stations based on different stages of mangrove vegetation. The observation stations consists of Avicennia marina and Rhizophora stylosa as the species of mangroves. Station 1 consists of mangroves in seedling size, station 2 consists of mangroves in pole size, and station 3 consists of mangrove trees. The benthic macrofauna consist of 8 species from 3 different classes, merostomata, malacostraca, and gastropods. The highest abundance value (155 ind/m2), diversity index (1,875) and similarity index (0,668) is in station 2. The relationship between benthic macrofauna abundance and mangrove density has -0,356 as the correlation coefficient which indicates that an increase of benthic macrofauna abundance is in line with the decrease of mangrove density. High density value in research shows that the mangrove is in seedling size, and vice versa a low density value indicates the mangrove trees. The coefficient of determination (0,1272) indicating that the abundance of benthic macrofauna is affected by the mangrove density as 12,72% and 87,28% affected by other factors.
    Źródło:
    World News of Natural Sciences; 2020, 33; 38-47
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Saprobic plankton index as bioindicator determines pollution status in Green Canyon River, Pangandaran, Indonesia
    Autorzy:
    Prasetyaningsih, Ayustin
    Zahidah, Zahidah
    Pratama, Rusky Intan
    Sahidin, Asep
    Powiązania:
    https://bibliotekanauki.pl/articles/1046525.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Green Canyon River
    Plankton
    Saprobic index
    Opis:
    Rivers generally have pollution potential, which from industrial waste, domestic waste or high human activities, especially in rivers designated as tourist destinations, such as along the Green Canyon River which is used as a research location. The purpose of this research was to determine the level of pollution along the Green Canyon River, Pangandaran. This research focuses on the saprobic index method using plankton as a group composer of saprobic waters which is become a pollution indicator. This research was conducted from September up to November 2018. Sampling was taken at five different stations. The results of this research indicate that the saprobic value of the index along the Green Canyon River, Pangandaran River ranges from 1.0 to 1.5 which indicates that waters are being in very low pollution up to low pollution. The lowest saprobic index value was found at station 4 with the use of the mangrove area and the highest saprobic index value was found at station 2 which was the first brackish point that dominated with forest and far from residential settlements. Identified plankton consists of 8 genera of phytoplankton and 2 genera of zooplankton with abundance until 2495 individual/L. The average of diversity index in range 0.99-1.02 with an average of dominance in range 0.103-0.121.
    Źródło:
    World Scientific News; 2019, 136; 66-77
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Relationship between Length and Mouth Opening of Skipjack Tuna (Katsuwonus pelamis) in the Waters of Palabuhanratu Sukabumi Regency
    Autorzy:
    Ridwan, Monika
    Khan, Alexander M. A.
    Zahidah, Zahidah
    Hamdani, Herman
    Powiązania:
    https://bibliotekanauki.pl/articles/1031887.pdf
    Data publikacji:
    2020
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Katsuwonus pelamis
    Palabuhanratu waters
    correlation value
    length-mouth opening relationship
    skipjack tuna
    Opis:
    Skipjack tuna (Katsuwonus pelamis (Linnaeus, 1758)) is one of the main commodities of Palabuhanratu capture fisheries with a percentage of 14% or 422.701 kg of total capture fisheries production in 2017. The purpose of this research is to analyze the correlation between length and mouth opening of skipjack tuna (Katsuwonus Pelamis) in the waters of Palabuhanratu Sukabumi Regency. The sample was collected in June until August 2019 at the Palabuhanratu Fishing Port, Sukabumi Regency. Skipjack tuna observed during the research had a total length range from 250 until 730 mm FL. The pattern of length and opening mouth relationships of skipjack tuna can be seen from the regression and correlation values. The results obtained were collected combined Y = 0.8064x - 0.2283 and R2 = 0.7786. Correlation value of the length and mouth opening relationship of skipjack tuna was 0.88. The level of length-mouth opening relationship of skipjack tuna is highly interrelated.
    Źródło:
    World News of Natural Sciences; 2020, 30, 2; 220-231
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fertility Differences between Silvofishery Pond and Conventional Pond in Legonkulon, Subang District, Indonesia
    Autorzy:
    Sahidin, Asep
    Zahidah, Zahidah
    Kurniawati, Nia
    Herawati, Heti
    Rizal, Achmad
    Powiązania:
    https://bibliotekanauki.pl/articles/1075743.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Fertility
    Makrozoobentos
    Plankton
    Pond
    Silvofishery
    Subang District
    Opis:
    This study was conducted to determine the fertility difference between silvofishery pond and conventional pond in Legonkulon, Subang, West Java. Sampling methods was used by collecting samples four times in the composite from five sampling points at six stations (three stations at silvofishery ponds and three stations at conventional ponds). The data were analyzed with comparative descriptive method. The results showed that average abundance of phytoplankton in the silvofishery pond is higher (1935 ind/l) than in the conventional pond (494 ind/l). Average abundance of zooplankton in the silvofishery pond found lower (383 individuals/L) than conventional pond (963 ind/l). Makrozoobenthos average abundance is not significantly different between silvofishery pond and conventional pond with average abundance of each 1162 and 1306 individuals/m2 respectively. Silvofishery pond with a composition of 20% mangrove and 80% ponds increased fertility of plankton and makrozoobenthos.
    Źródło:
    World Scientific News; 2019, 118; 115-128
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Selectivity of fishing gear for hairtail fish (Trichiurus lepturus Linnaeus, 1758) commodities in Pangandaran District, Indonesia
    Autorzy:
    Sienna, Yafi Ibnu
    Hasan, Zahidah
    Lili, Walim
    Dewanti, Lantun Paradhita
    Powiązania:
    https://bibliotekanauki.pl/articles/1075461.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Beach seines
    Gill nets
    Pangandaran
    Selectivity
    Trichiurus lepturus
    Opis:
    Hairtail fish (Trichiurus lepturus Linnaeus, 1758) are a major commodity of high economic value in Pangadaran. This study aims to determine the most selective fishing gear for hairtail fish commodities based on the frequency of hairtail fish length, the proportion of the main catch and by-catch in Pangandaran District. Data collected are primary and secondary data. Primary data consists of catch data and fish size length. The catch is obtained by collecting the results of landing fish with gill nets and beach seines. Fish size length data obtained through direct measurement when the fish is landed. Secondary data collected is data on capture fisheries production in Pangandaran District. Data analysis consisted of calculation of length size distribution and comparison of main and by-catches with fishing gears. The analysis was carried out with the help of Microsoft Excel software. The results of this study indicate that hairtail fish in Pangandaran District were captured using gill nets and beach seines. Based on the results of the research conducted on August 2018 until January 2019, it can be concluded that gill net fishing gears are more selective compared to beach seines based on several parameters observed, namely the length distribution and the proportion of main catch : by-catch. The results showed that the comparison of the length distribution of hairtail fish that was appropriately caught between gill nets and beach seines was 85.74% : 30,74%. Comparison of the proportion of main catch : by-catch between gill nets and beach seines was 52.38%: 23.57%.
    Źródło:
    World Scientific News; 2019, 126; 248-260
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The performance of Koi (Cyprinus carpio L.) in a circular current container tested against the Aeromonas hydrophila bacteria
    Autorzy:
    Suryadi, Ibnu Bangkit Bioshina
    Yusa, Regan Hanifelian
    Roffi, Grandiosa H.
    Zahidah, Zahidah
    Powiązania:
    https://bibliotekanauki.pl/articles/1193489.pdf
    Data publikacji:
    2021
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Aeromonas hydrophila
    Currents
    Cyprinus carpio
    Koi Fish Fingerlings
    Round Container
    System Immune
    Ventury System
    Opis:
    This research aims to determine the best currents speed and utilization of venturi to increasing survival, growth of Cyprinus carpio L. and reducing the infection rate of A. hydrophila bacteria. fingerlings. This research used an experimental method completely randomized design (CRD) with four treatments and four replications. The treatments used were the use of currents and venturi on the maintenance media with currents velocities of 0 m/s (A), 0.06 m/s (B), 0.1 m/s (C), and 0.14 m/s (D). Maintenance of the test fish for 40 days then followed by a challenge test for 14 days. Koi fish fingerlings tested to use A. hydrophila with a density of 108 CF /ml. The parameters observed included white blood cells, red blood cells, clinical symptoms, survival, daily growth rate, feed conversion ratio and water quality. The results showed that the use of currents and venturi with a flow rate of 0.14 m/s was effective in improving the performance of the koi fish's immune system and reducing the infection rate of A. hydrophila bacteria. During the flow administration during the 40 days maintenance period, the white blood cell count increased by 20.51% from a value of 9.19 × 104 cells/mm3 to 11.56 × 104 cells/mm3. Red blood cells increased by 40.65% from 1.60 × 106 cells/mm3 to 2.69 × 106 cells/mm3. Currents treatment with a speed of 0.14 m/s produced the highest survival rate after challenged with a value of 86.7%. Also this treatment was effective in preventing infection of A. hydrophila bacteria, it can be seen from the macroscopic clinical symptoms that appear less than the treatment current. The best results of daily growth rate and feed conversion ratio provided in currents treatment with a speed 0.1 m/s.
    Źródło:
    World Scientific News; 2021, 159; 1-19
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Determination of Shortfin Scad (Decapterus sp.) Potential Fishing Area with Chlorophyll-a Distribution in Pekalongan Sea, Central Java, Indonesia
    Autorzy:
    Wicaksono, Viga Ananda
    Hasan, Zahidah
    Gumilar, Iwang
    Dewanti, Lantun P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1075694.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Chlorophyll-a
    Fishing ground
    Pekalongan
    Shortfin Scad
    Opis:
    The fishing ground can be determined by detecting oceanography parameters in seawater area. One of the oceanographic parameters that can be used is chlorophyll-a. This research aims to analyze the relationship between chlorophyll-a and total catch of shortfin scad along with potential map areas for fishing shortfin scad (Decapterus sp.) in Pekalongan seawater. The research was conducted in two stages, which are field data collection in January and downloading and processing satellite image data in February. This research used the survey method with spatial analysis. Primary spatial data used is the distribution of chlorophyll-a and data of shortfin scad fishing production. The study shows an average concentration of chlorophyll-a from 2013-2017 in Pekalongan seawater ranges around 0,16 - 1,55 mg/m3. The result of linear regression test shows that chlorophyll-a has a role as one of the factors that influence the total catch of shortfin scad in Pekalongan seawater, East Java by 23%. Other factors influence the remaining 77%. Based on the assessment of fishing ground, there are 25 potential coordinate points of shortfin scad fishing area in Pekalongan seawater that can be categorized as a potential fishing ground.
    Źródło:
    World Scientific News; 2019, 119; 111-124
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Utilization of activated carbon of various charcoal types as absorbent in green shellfish (Perna viridis, Linnaeus, 1758) contaminated by lead heavy metal
    Autorzy:
    Yustindriarini, Vidya
    Hasan, Zahidah
    Hamdani, Herman
    Sahidin, Asep
    Powiązania:
    https://bibliotekanauki.pl/articles/1076152.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Activated Carbon
    Green Shell
    Lead
    Perna viridis
    Skeletonema
    Opis:
    Aims of the research are to determine the type of activated carbon with high absorption rate in absorbing heavy metals of lead in green shells. This research used experimental method with complete randomized design then analyzed used analysis of variance and duncan test to see the decrease of lead in green shells by using different charcoal filters. The results showed that the highest decrease in green shell was by using coconut shell activated filter are 0,28 with a decrease percentage of 36,51%. The best lead decrease in water maintenance coconut shell activated filter treatment are 0,33 ppm. The coconut shell activated charcoal has a low ash content compared to other types and large pore charcoal size. Factors that supporting the metal absorption by charcoal include ash content on charcoal, charcoal pores, carbon concentration and pH concentration. Water quality measurements were measured in the morning and evening as supporting parameters in the study. Water quality measurements are in a range that can still be tolerated by green shells. Based on these results it can be concluded that the use of coconut shell activated charcoal is the best type of charcoal in lowering lead in green shells.
    Źródło:
    World Scientific News; 2019, 116; 157-168
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-15 z 15

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