Pesona Nikel Indonesia Kurang Memikat Tesla

This study aims to determine the development of Tesla's investment in Indonesia related to one of the Natural Resources, which is now the favorite of investors, Nickel. This empirical research method uses normative research. The study results show that many people need to learn the cause of the failure of Tesla's investment in Indonesia due to the issue of implementing ESG (Environmental, Social, and Governance). ESG values are company practice values that refer to three things: the environment, social impact, and good regulatory governance. As long as Nickel mining in Indonesia is carried out in ways that are not environmentally friendly and damage nature, don't expect Tesla (Elon Musk) to invest in Indonesia

Determination of selected organochlorine pesticide (OCP) compounds from the Jukskei River catchment area in Gauteng, South Africa

Organochlorine pesticides (OCPs) are continually detected in the environment due to their increasing applications in agriculture and industry. The presence of OCPs in the environment is not desirable since they are well known to have negative impact in humans, animals and birds. Thus, there has been a continual demand to monitor the presence of OCPs within the environment. Liquid-liquid extraction (LLE) and Soxhlet extraction (SE) methods (using dichloromethane as the extracting solvent,) were optimised and evaluated for the determination of these compounds in surface water (unfiltered and filtered) and sediment samples. The crude extracts obtained were subjected to column chromatography for clean-up. Thereafter, 1 μℓ of the cleaned extracts were injected into the GC equipped with ECD.Percentage recoveries obtained for OCPs ranged from 98.90±7.32 (2,4’-DDE) - 124.1±8.23 endosulfan II (ENDO II) % and from 98.99±5.30 (2,4’-DDE) - 121.1±0.38 (4,4’-DDE) % in spiked triply distilled water and sediment samples respectively. The levels of OCPs obtained in unfiltered environmental water samples ranged from 0.631±0.03 (γ-HCH) -1 540±0.19 ng·mℓ-1 (4,4’-DDT) while levels in filtered water samples ranged from 0.895±0.01 (γ-HCH) - 9 089±0.08 ng·mℓ-1 (HEPTA). Levels of analysed OCPs obtained in sediments ranged from 0.266±0.01 (δ-HCH) - 22 914±2.85 ng·gdw-1 (2,4’-DDE). Analytes adsorbed on the sample bottles used for water samples collection gave levels which ranged from 0.01±0.01 - 1.06±0.02 ng·mℓ-1 for OCPs.The levels obtained from the catchment were significantly higher than the water criteria values recommended by USEPA and DWAF for the protection of the aquatic environment. Levels obtained were also higher than those of other studies conducted so far in South African aquatic environments. There is, therefore, a definite pollution of the Jukskei River catchment by the OCPs studied.Keywords: OCPs, surface water, sediments, liquid-liquid extraction, GC-EC

Improved derivatization protocol for simultaneous determination of alkylphenol ethoxylates and brominated flame retardants followed by gas chromatography – mass spectrometry analyses

An improved derivatization protocol for the simultaneous determination of alkylphenol ethoxylates and brominated flame retardants with heptafluorobutyric anhydride under triethylamine amine base was investigated. The derivatization reaction was completed in 30 min at 50°C using hexane as solvent. Under these conditions, it was observed that alkylphenol ethoxylates and tetrabromobisphenol A were derivatized successfully in the presence of hexabromocyclododecane, lower congeners of polybrominated biphenyls and polybrominated diphenyl ethers. The improved protocol was applied to recovery of analytes of interest from simulated water samples after solid phase extraction. The recoveries achieved were above 60%. The limit of detection and limit of quantification ranged from 0.01–0.20 μg/ℓ and 0.05–0.66 μg/ℓ, respectively.Keywords: Alkylphenol ethoxylates, brominated flame retardants, gas chromatography-mass spectrometry, heptafluorobutyric anhydride derivatization, simultaneous determinatio

Levels of selected alkylphenol ethoxylates (APEs) in water and sediment samples from the Jukskei River catchment area in Gauteng, South Africa

There has been a continual search to develop sensitive analytical methods for detecting and determining organic compounds such as alkylphenol ethoxylates (APEs) in environmental samples, since they occur at very low concentration levels. Studies conducted so far in some South African waters have offered little or no information on APEs. The presence of these compounds in environmental samples is not desirable and therefore, needs to be monitored. Water and sediment samples were collected from different sites in the Jukskei River catchment area in the 2005 summer and winter seasons. Liquid-liquid extraction (LLE) and Soxhlet extraction (SE) methods (using 1:1 dichloromethane and methanol as extracting solvents) were optimised, evaluated and used to determine APEs of interest in water (unfiltered and filtered) and sediment samples, respectively. Mean percentage recoveries obtained for APEs in spiked double-distilled water were between 83.1±1.0 (OPnEOS3) and 108.1±3.5 (OP) and for sediments the range was between 96.6±0.9 (OPnEOS1) and 117.1±0.6 (OPnEOS3). The concentration levels of APEs studied in unfiltered environmental water samples were in the range of 0.25(0.03) ng/mℓ (NP) to 92.7(1.11) ng/mℓ (OPnEOS3) and 0.31(0.02) ng/mℓ (NP) to 60.1(0.51) ng/mℓ (OPnEOS3) for filtered environmental water samples. Concentration levels obtained in sediments were from 1.94(0.14) ng/gdw to 941(0.50) ng/gdw (OPnEOS3). Analytes adsorbed on the sample bottle gave concentration levels which ranged from 0.02(0.02) ng/mℓ to 0.42(0.02) ng/mℓ for APEs. All the compounds studied were found at levels higher than the European Union (EU) set levels for the protection of the aquatic environment. Keywords: APEs, surface water, sediments, liquid-liquid, soxhlet, GC-FI

PENERAPAN PEWARNAAN GRAF UNTUK MENENTUKAN WISATA KULINER DI SAMARINDA

Culinary tourism in an area is usually hunted by tourists. The problem that often arises is that many restaurants are available so that it makes tourists confused to choose a restaurant and takes a long time to decide on a choice of restaurants. Therefore, we need a system and method that can be applied to recommend restaurants. The restaurant recommendation application in this study was created to assist tourists in finding restaurants with the same menu choices. The method used is the Graph Coloring Method, the application development method used is Waterfall consisting of data analysis, technology analysis, system analysis, information analysis and user analysis. The results of this study are made an application to determine which restaurants can recommend restaurants with the same menu. Users can enter the menu as they wish then the application will recommend restaurants using a simple line coloring algorithm at the point. After processing the application will be able to display the results of restaurant recommendations with the same men

Occurrence and Removal of Persistent Organic Pollutants (POPs)

Since the revelation in the detection of the persistent organic pollutants (POPs) in industrial wastewater in the early 1990s, a notable progress has been achieved on the research and different removal applications or methods of this challenge at hand. This book chapter entails a decent understanding on the occurrence, effects, and amputation of POPs in the water sector in advancement of municipal performances of treating industrial wastewaters and environment at large. This current chapter also presents an overview of research associated to the amputation of persistent organic pollutants (POPs) from various water bodies, i.e., river sediments, sewage plants, industrial sludges, and wastewater. Also, discussing the relationships with actual pre-treatment and removal rates. Vital characteristics such as the wastewater matrix, location, sources of POPs, materials and modules, operational parameters and problems are presented with a clear focus on removal of these organic pollutant’s different sources (like, textile wastewater). The particular methods to the removal of POPs can be associated with the application of ultrafiltration, nanofiltration and reverse osmosis as advanced treatment stages are considered in correlation with the textile wastewater characteristics and removal efficiencies requirements. This gives significance to the amalgamation of physico-chemical and biological treatment with membrane processes which is likely to represent an efficient solution for the removal of POPs from textile wastewater. However, since membrane fouling and hydrophilicity are apparent in the execution of this process, this chapter also covers the effective strategies like fabrication of membrane with a suitable additive to counterattack these challenges, which are often used in membrane technological research. This chapter also proposes an updated understanding of fouling and improvement of membrane properties

Regulation of the hepatitis C virus RNA replicase by endogenous lipid peroxidation

Although oxidative tissue injury often accompanies viral infection, there is little understanding of how it influences virus replication. We show that multiple hepatitis C virus (HCV) genotypes are exquisitely sensitive to oxidative membrane damage, a property distinguishing them from other pathogenic RNA viruses. Lipid peroxidation, regulated in part through sphingosine kinase 2, severely restricts HCV replication in Huh-7 cells and primary human hepatoblasts. Endogenous oxidative membrane damage lowers the 50% effective concentration of direct-acting antivirals, suggesting critical regulation of the conformation of the NS3/4A protease and NS5B polymerase, membrane-bound HCV replicase components. Resistance to lipid peroxidation maps genetically to trans-membrane and membrane-proximal residues within these proteins, and is essential for robust replication in cell culture, as exemplified by the atypical JFH1 strain. Thus, the typical, wild-type HCV replicase is uniquely regulated by lipid peroxidation, providing a novel mechanism for attenuating replication in stressed tissue and possibly facilitating long-term viral persistence

Tinjauan yuridis tindak pidana narkotika yang dilakukan oleh anak : Studi kasus putusan no. 121/Pid.B/2010/Pn.Mks

vii, 87 h

ANALISIS DERAJAT PREEKLAMSIA PADA IBU HAMIL TERHADAP KEJADIAN BAYI BERAT LAHIR RENDAH (BBLR) DI RSUD DR. H. CHASAN BOESOIRIE TERNATE

Preeklamsia adalah salah satu komplikasi berbahaya dan penyumbang angka kematian pertama pada ibu hamil di negara maju dikarenakan terjadi peningkatan deportasi sel trofoblas yang akan menyebabkan kegagalan invasi ke arteri spiralis lalu berakhir dengan iskemik pada plasenta. Iskemik pada plasenta dapat menyebabkan gangguan pertumbuhan janin dan berakhir pada kejadian Bayi Berat Lahir Rendah (BBLR). Tujuan: Untuk mengetahui pengaruh derajat preeklamsia terhadap kejadian BBLR di RSUD Dr. H. Chasan Boesoirie Ternate. Metode: Penelitian analitik dengan variabel derajat preklamsia ibu dan berat bayi lahir, dimana penentuan sampel menggunakan purposive sampling pada data rekam medis pasien preeklamsia yang dirawat inap pada periode 2017-2021. Hasil: Dari 166 sampel ibu melahirkan dengan preeklamsia didapatkan perbedaan yang tidak signifikan antara preeklamsia ringan dan berat terhadap kejadian BBLR (p=0,249). Kesimpulan: Hasil pada penelitian ini memperlihatkan bahwa kejadian BBLR dari preeklamsia ringan dan berat tidak memiliki perbedaan yang signifikan