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Wyświetlanie 1-9 z 9
Tytuł:
Phytoplankton Susceptibility Towards Toxic Heavy Metal Cadmium: Mechanism and Its Recent Updates
Autorzy:
Permana, Rega
Akbarsyah, Nora
Powiązania:
https://bibliotekanauki.pl/articles/1839870.pdf
Data publikacji:
2021
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Cadmium
Heavy Metals
Phytoplankton
Toxicity
Opis:
Environmental pollution particularly heavy metal pollution into aquatic ecosystem has led to multiple damage in almost all life forms. Cadmium is one of the priority pollutant listed by United States Environmental Protection Agency or US EPA that widely known to have an adverse effect to organisms as well as human health. One type of organism that is susceptible to the effects of metal pollution is phytoplankton. Phytoplankton is a group of microalgae that are easy to find and are primary producers in aquatic environments. Phytoplankton plays an important role in aquatic ecosystems because they serve as primary producers. They are representing the water total primary productivity and reinforcing the aquatic life on the higher food chain. Thus, any threats that endangered the population of phytoplankton can lead to trophical cascade or even worse, biodiversity loss. The exposure of cadmium in high concentration to phytoplankton can lead to various impact including cell damage and disruption, biosynthesis inhibition of photosynthetic pigment (e.g. chlorophyll and carotenoid), chlorphyll degradation or known as chlorosis, thylakoid membrane degradation, inhibition of cellular metabolism and cell division. It is important to study the impact of cadmium to phytoplankton in a cellular level to better understand what mechanism lies and to what extent that the cadmium will be transferred to higher trophical organism via bioaccumulation or biomagnification.
Źródło:
World News of Natural Sciences; 2021, 38; 83-97
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metal Detoxification in Nature and Its Translation into Functional Adsorbent Materials
Autorzy:
Permana, Rega
Ihsan, Yudi Nurul
Powiązania:
https://bibliotekanauki.pl/articles/1030803.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
adsorbent
bioinspired
heavy metal
polyphenol
Opis:
Nature has a remarkable strategies to overcome the unfavoring environmental condition by producing a unique chemical compounds, including polyphenol. Polyphenol residues in many living organism have been documented to express numerous biological function ranging from antioxidant, mechanical reinforcement as well as metal anchoring substances. This gave us insight of how nature converts toxic metal compound and deposits it into a harmless form. This review will discuss some natural strategies of living organism to metabolize metal in a safe manner so that the metal no longer harmful to them. Example taken from aluminum accumulating plants, vanadium accumulating marine tunicate and iron-reinforced mussel byssus, which all three utilized phenol derivative compound to chelate the metal. Advances made by incorporating cutting edge characterization tools allowed us to understand the exact mechanism of metal chelation at the atomic level. A comprehensive discussion of molecular mechanism governing the complexion between the phenolic compound and metal will be beneficial for further study to fabricate functional materials, for example adsorbent, to remediate contaminated water. Translating these natural strategies into an engineered polyphenol based adsorbent materials will be prospective to be further applied as a remediation agent as it is easily found in nature, cost effective and highly efficient.
Źródło:
World Scientific News; 2020, 145; 144-155
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cadmium effects on growth and photosynthetic pigment content of Chaetoceros gracilis
Autorzy:
Ferdian, Ferdian
Hindarti, Dwi
Permana, Rega
Powiązania:
https://bibliotekanauki.pl/articles/1030841.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Carotenoids
Cell density
Chaetoceros gracilis
Chlorophyll-a
Toxicity test
Opis:
Cadmium wastewater released by human activities will eventually enter the aquatic environment. Living organism that lives around could potentially exposed by these cadmium, including C. gracilis which play a critical role as a primary producer. Cadmium can reduce the growth rate and pigment content in C. gracilis. Therefore, toxicity testing becomes important to do considering that C. gracilis has many benefits such as shrimp feed and have active compounds for antibacterial and biodiesel. Toxicity test was performed in 96-hours with a series of concentration 0, 0.56, 1.0, 1.8, 3.2, 5.6 mg/L. IC50 cadmium results in concentrated cell density and chlorophyll-a C. gracilis were 1.62 mg/L and 3.4 mg/L, while carotenoids were not in accordance with the contribution of cadmium. NOEC and cadmium LOEC to C. gracilis cell density were 0.56 mg/L and 1.0 mg/L.
Źródło:
World Scientific News; 2020, 145; 245-255
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cadmium Toxicity Towards Marine Diatom Thalassiosira sp. and its Alteration on Chlorophyll-a and Carotenoid Content
Autorzy:
Wahyu, Dionisius
Hindarti, Dwi
Permana, Rega
Powiązania:
https://bibliotekanauki.pl/articles/1031551.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Cadmium
Carotenoid
Chlorophyll-a
Thalassiosira sp
Opis:
Cadmium is one of the non-essential metals that have toxic effects on aquatic organisms, including diatoms. Diatoms play significant important roles in the aquatic environment, hence, the presence of cadmium will have a significance growth inhibition to its abundance. In this paper, we tried to clarify the effects of cadmium on growth, chlorophyll-a and carotenoid contents of the diatom Thalassiosira sp. Growth inhibition of the phytoplankton was determined following exposure for 96h to several different concentrations of cadmium solutions in an experiment adapted from ASEAN-Canada CPMS II. Our work shows that IC50 of growth and chlorophyll-a was around 0.32 mg/L and 0.914 mg/L, respectively. In addition, Lowest Observed Effect Concentration (LOEC) and No Observed Effect Concentration (NOEC) were 0.18 mg/L and 0.1 mg/L, respectively. In conclusion, cadmium inhibits the growth, as well as the photosynthetic pigment contents of Thalassiosira sp.
Źródło:
World News of Natural Sciences; 2020, 31; 48-57
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment the Impact of Fiscal and Monetary Policy on West Java Province of Indonesia: A Computable General Equilibrium Analysis
Autorzy:
Rizal, Achmad
Apriliani, Izza Mahdiana
permana, Rega
Powiązania:
https://bibliotekanauki.pl/articles/1031799.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Manufacturing industry
West Java economy
fiscal policy
monetary policy
Opis:
Manufacturing Industry has an essential role in West Java economy in contributing to regional output and level employment. Besides, it is very fragile from internal and external shudder. Thus, government intervention is considerably needed to offset the negative impact that might be ensued due to internal and external shocks. This study will analyze the impact of both government fiscal policy and bank monetary policy on industry and West Java economic performance by using the Computable General Equilibrium (CGE) model. Fiscal and monetary policy will positively impact West Java macroeconomic performance in terms of change in real GDRP, investment, consumption, and capital rate of return, with the most significant fiscal policy impact. Conversely, the result is expected to vary at the sector level, and the West Java industry is not so receptive to changes in interest rates that represent monetary policy.
Źródło:
World Scientific News; 2020, 150; 162-181
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of phosphate addition with different concentration on the capability of Nannochloropsis oculata as a bioremediation agent of medium heavy metal (Cd2+)
Autorzy:
Rizal, Achmad
Permana, Rega
Apriliani, Izza M.
Powiązania:
https://bibliotekanauki.pl/articles/1030960.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Bioremediation
Cadmium
Nannochloropsis oculata
Phosphate (KH2PO4)
Opis:
Nannochloropsis oculata is a unicellular marine microalgae that has a role as an important food source and additive for marine organisms. Nannochloropsis oculata contains high levels of carbohydrate, protein, and chlorophyll so it has the potential as a bioremediation agent. In its growth, it needs an important component of nutrients as a growth medium, one of which is a source of phosphate. Phosphate itself acts as a constituent of protein compounds to bind metal ions in cells. This research aims to determine the effect of the addition of KH2PO4 as a phosphate source on the growth of Nannochloropsis oculata as a bioremediation agent to reduce levels of heavy metal pollution (Cd2+). This research was conducted from June to August 2019 in the Laboratory of Microbiology and Molecular Biotechnology of FIP-UNIDA, Bogor, West Java. Nannochloropsis oculata microalgae were obtained from UGO Plankton Shop, Purwodadi, Central Java. The research method used is a Completely Randomized Design (CRD) with 4 treatments and two replications. The Cd2+ concentration used is 2 ppm in this research. The addition of KH2PO4 as a phosphate source is 0 ppm (control), 3, 4, and 5 ppm. The results of this research showed that the highest growth peak of Nannochloropsis oculata was achieved at 4 ppm treatment on the 9th day with cell density reaching 17.8 × 106 cells/mL, while the highest absorption of cadmium (Cd2+) was found in the 4 ppm phosphate treatment with the absorption efficiency reaching 39.23%.
Źródło:
World Scientific News; 2020, 145; 286-297
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of Several Water Environment Parameters Affecting the Accumulation of Heavy Metal Lead in the Body of Blood Shells in the Coastal Waters of Muara Gembong Sub-District
Autorzy:
Rizal, Achmad
Apriliani, Izza Mahdiana
permana, Rega
Powiązania:
https://bibliotekanauki.pl/articles/1193303.pdf
Data publikacji:
2021
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Anadara granosa
Muara Gembong sub-district
aquatic parameters
coastal waters
lead accumulation
shellfish
Opis:
The research objectives are: 1) to analyze several parameters of the aquatic environment that affect the lead accumulation in shellfish body (Anadara granosa (Linnaeus, 1758)) at eastern coastal waters of Muara Gembong sub-district by using multiple regression analysis, 2) to reduce the variables through principal component analysis to reduce the research cost for monitoring of lead pollution in the next time, and 3) to analyze the location which has similar characteristics of lead accumulation by using hierarchical cluster analysis. Based on the multiple regression analysis, the lead concentration in water, lead concentration in sediment, and sulfur concentration in sediment has a very significant correlation (P < 0.01) to the lead accumulation in shellfish body. In contrast, COD of waters has a significant correlation (P < 0.05), which correlation coefficient (R) is 0.97. Through the principal component analysis, the lead concentration in sediment, COD of waters, and sulfur concentration in sediment gives the most variance contribution to the total data variance. Therefore, those variables are sufficiently used to monitor lead pollution on shellfish at the Muara Gembong sub-district's coastal waters. Cluster analysis shows that the location is agglomerated to be 3 clusters, which coastal water of Southern Bahagia Beach and Western Mekar Beach has highly similar lead accumulation characteristics.
Źródło:
World Scientific News; 2021, 153, 2; 65-79
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quantitative Evaluation of Shark Fisheries from Cantrang Fishing Gear In Mayangan Coastal Fishery Port, Probolinggo, Indonesia
Autorzy:
Permana, Rega
Pringgo, D. N. Y. P. Kusuma
Powiązania:
https://bibliotekanauki.pl/articles/1031554.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Cantrang
Capture Fisheries
Mayangan
Sharks
Opis:
Sharks are marine animals that play an important role in marine ecosystems especially as the main predator, thus controlling the dynamics of populations of other organisms at lower trophic levels. Sharks are often caught as a byproduct of capture fisheries in Indonesia, making Indonesia one of the five largest shark contributing countries in the world according to the FAO. A study of shark populations needs to be done to evaluate its stock in nature. The Mayangan Coastal Fishery Port, Probolinggo is one of the largest fishing ports in East Java with the majority of fishing gear used being cantrang. This study will discuss the shark bycatch volume in fishing activities using cantrang fishing gear at PPP Mayangan, Probolinggo. The use of cantrang fishing gear in Mayangan Port Probolinggo has produced around 6242.9 kg of shark production each year for the past 10 years. The highest production was found in 2011 which reached 10980 kg while the lowest was in 2019 with a total production of 412 kg. The pattern of the development of shark catches at PPP Mayangan Probolinggo showed a decrease in the number of catches, indicating the enforcement of law regarding cantrang usage has been well adapted.
Źródło:
World News of Natural Sciences; 2020, 31; 70-78
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Molecular diversity of the bacterial community associated with Acropora digitifera (Dana, 1846) corals on Rancabuaya coastline, Garut District, Indonesia
Autorzy:
Rizal, Achmad
Akbarsyah, Nora
Kdyp, Pringgo
Permana, Rega
Andhikawati, Aulia
Powiązania:
https://bibliotekanauki.pl/articles/1030642.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Acropora digitifera
Bacteria
Culture
Gen 16S rRNA
Metagenome
Opis:
Bacteria are one of the prokaryotic microorganisms that are symbiotic with coral reefs. The purpose of this study was to determine the diversity of bacterial communities associated with Acropora digitifera corals in the rancabuaya coastline of Garut district, West Java through a metagenomic and cultural approach. Stages of research include tissue isolation using waterpics, isolation of bacterial genomic DNA, sequencing using the NGS (Next Generation Sequencing) method of Hiseq using 16S rRNA V3-V4 region 341F and 806R primers for the metagenomic approach. While the culture approach, carried out inoculation, bacterial cultivation, gram staining, then proceed with the identification of molecular characteristics of DNA with 16S rRNA gene sequences. Dominantly, the results of bacterial identification were obtained as many as 77 species from 10 genera 10 families 10 orders of 10 classes and 4 phylum and unidentified reads of 6%. The results of the identification of 16S rRNA showed that the isolate ACD.P4.PH7.P had a close relationship with the Bacillus flexus strain BF strain zb strain with a similarity of 85.44%. Isolate ACD.P4.PH9.P has a close relationship with Bacillus sp. c234 with a 98.50% similarity. Isolate ACD.P4.PH9.K has an approach with the species Bacillus sp. strain 6RM1 with a similarity of 94.78%.
Źródło:
World Scientific News; 2020, 144; 384-396
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-9 z 9

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