The Special Capital Region of Jakarta (Indonesian: Daerah Khusus Ibukota/DKI Jakarta) has various regulations in enforcing the health protocol law, imposing sanctions on culinary business actors for ...various violations committed, in terms of not carrying out educational obligations and Covid. -19 prevention protocols. The problems in this research are first, how is law enforcement for culinary business actors who violate the obligation to implement education and Covid-19 prevention protocols in Jakarta? and second, does the imposition of sanctions for culinary business actors have a deterrent effect and can increase awareness in conducting education regarding the Covid-19 prevention protocol? Normative and empirical juridical research methods. Data collection techniques through document/library studies and interviews. A qualitative juridical analysis is based on primary data and secondary data. The results of the first study and conclusions, Law enforcement for culinary business actors are carried out by the Civil Service Police Unit (Indonesian: Satuan Polisi Pamong Praja/Satpol PP) by involving several relevant agencies, as the party overseeing culinary business licensing. Law enforcement is carried out through administrative sanctions ranging from written warnings, and fines, to freezing and revocation of permits. Second, the imposition of various sanctions for culinary business actors can increase awareness in conducting education regarding the Covid-19 prevention protocol, have new habits, and provide a deterrent effect. His advice is that corrective action is needed on policies to handle COVID-19 in the culinary business sector and evaluation of culinary licensing in Jakarta.
The surface chemistry and adsorption behavior of submicrometer cellulosic and lignin particles have drawn wide-ranging interest in the scientific community. Here, we introduce their assembly at ...fluid/fluid interfaces in Pickering systems and discuss their role in reducing the oil/water interfacial tension, limiting flocculation and coalescence, and endowing given functional properties. We discuss the stabilization of multiphase systems by cellulosic and lignin colloids and the opportunities for their adoption. They can be used alone, as dual components, or in combination with amphiphilic molecules for the design of multiphase systems relevant to household products, paints, coatings, pharmaceutical, foodstuff, and cosmetic formulations. This invited feature article summarizes some of our work and that of colleagues to introduce the readers to this fascinating and topical area.
Pengelolaan sumber daya pertambangan dipengaruhi oleh kemajemukan masyarakat tersebut yang memiliki sistem hukum berbeda dengan hukum nasional. Dalam gagasan konseptual ini memiliki urgensi bahwa ...dibutuhkannya suatu integrasi kebijakan pembentukan peraturan dan pengelolaan di bidang pertambangan. Permasalahan yang dikaji adalah: pertama, bagaimana kebijakan pengelolaan sumber daya alam di bidang pertambangan dalam konteks pluralisme hukum? dan kedua, bagaimana konsep hukum sebagai pengintegrasi dalam kebijakan pengelolaan pertambangan di Indonesia? Kesimpulannya adalah pertama, kebijakan pengelolaan sumber daya alam di bidang pertambangan didominasi hukum negara, sementara terjadi marginalisasi kelompok masyarakat hukum adat dalam kebijakan pertambangan; dan kedua, konsep hukum dapat berfungsi sebagai pengintegrasi diantara kepentingan sub sistem dalam kebijakan pengelolaan pertambangan di Indonesia.
The purpose of this article is to understand the concept of local wisdom from the perspective of local wisdom of Indonesian indigenous peoples in handling Covid-19 and environmental management and ...Indonesian environmental policy. In this article, we use normative legal research methods, literature research, and are supported by empirical data based on policy developments and information media in Indonesia. Data analysis uses qualitative links in developing policy reviews and literature. The findings of this study first, are the local wisdom of indigenous Indonesians in environmental management and handling of Covid-19 by using traditional rituals according to the teachings of their ancestors, second, building partnership relationships related to an environmental policy with indigenous peoples with divinity, humanity, and principles/values of unity. The research results of this paper will provide practical guidelines for the government to make regulations and policies related to environmental management and handling of Covid-19
Highly charged (zeta potential ζ = +105 mV, acetate counterions) chitin nanoparticles (NCh) of three different average aspect ratios (∼5, 25, and >60) were obtained by low-energy deconstruction of ...partially deacetylated chitin. The nanoparticles were effective in reducing the interfacial tension and stabilized the oil/water interface via network formation (interfacial dilatational rheology data) becoming effective in stabilizing Pickering systems, depending on NCh size, composition, and formulation variables. The improved interfacial wettability and electrosteric repulsion facilitated control over the nanoparticle’s surface coverage on the oil droplets, their aspect ratio and stability against coalescence during long-term storage. Emulsion superstabilization (oil fractions below 0.5) occurred by the microstructuring and thickening effect of NCh that formed networks at concentrations as low as 0.0005 wt %. The ultrasound energy used during emulsion preparation simultaneously reduced the longer nanoparticles, producing very stable, fine oil droplets (diameter ∼1 μm). Our findings indicate that NCh surpasses any reported biobased nanoparticle, including nanocelluloses, for its ability to stabilize interfaces at ultralow concentrations and represent a step-forward in efforts to fully replace surfactants in multiphase systems.
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•Ultrasound improves dispersion of CNCs obtained at laboratory or commercial scale.•The CNC properties, including particle morphology, size, and surface charge are ...controlled.•Ultrasound can be combined with other novel approaches to isolate CNCs with high yield.•Ultrasonication enables coarse and fine tuning of CNC liquid crystal phases.
Cellulose nanocrystals (CNCs) are typically extracted from plants and present a range of opto-mechanical properties that warrant their use for the fabrication of sustainable materials. While their commercialization is ongoing, their sustainable extraction at large scale is still being optimized. Ultrasonication is a well-established and routinely used technology for (re-) dispersing and/or isolating plant-based CNCs without the need for additional reagents or chemical processes. Several critical ultrasonication parameters, such as time, amplitude, and energy input, play dominant roles in reducing the particle size and altering the morphology of CNCs. Interestingly, this technology can be coupled with other methods to generate moderate and high yields of CNCs. Besides, the ultrasonics treatment also has a significant impact on the dispersion state and the surface chemistry of CNCs. Accordingly, their ability to self-assemble into liquid crystals and subsequent superstructures can, for example, imbue materials with finely tuned structural colors. This article gives an overview of the primary functions arising from the ultrasonication parameters for stabilizing CNCs, producing CNCs in combination with other promising methods, and highlighting examples where the design of photonic materials using nanocrystal-based celluloses is substantially impacted.
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The self-assembly of phospholipids in oil, specifically lecithin in rapeseed oil, was investigated by combining experimental and computational methods The influence of temperature, ...water, and free fatty acids on the onset of lecithin aggregation in the rapeseed oil was determined using the 7,7,8,8 -tetracyanoquinodimethane dye (TCNQ) solubilization method and the size and shape of the self-assembled lecithin structures were investigated by small-angle X-ray scattering and cryogenic transmission electron microscopy. In the absence of excess water in the system (0.03wt-% water in oil), stable cylindrical lecithin reverse micelles were observed above the critical micelle concentration (CMC). Comparing the aggregation response in room temperature and at 70°C revealed that CMC decreased with increasing temperature. Furthermore, already a modest amount of added water (0.3wt-% water in oil) was sufficient to induce the formation of lamellar lecithin structures, that phase separated from the oil. In low water content, oleic acid suppressed the formation of lecithin reverse micelles whereas in the presence of more water, the oleic acid stabilized the reverse micelles. Consequently, more water was needed to induce phase separation in the presence of oleic acid. Molecular dynamics simulations indicated that the stabilizing effect of oleic acid resulted from oleic acid enhancing phospholipid solubilization in the oil by forming a solvating shell around the phosphate head group. The findings showed that the response of the mixed surfactant system is a delicate interplay of the different components and variables. The significance of the observations is that multiple parameters need to be controlled for desired system response, for example towards vegetable oil purification or phospholipid based microemulsions.
Chemical cross-linking during spray drying offers the potential for green fabrication of microgels with a rapid stimuli response and good blood compatibility and provides a platform for ...stimuli-responsive hemicellulose microgels (SRHMGs). The cross-linking reaction occurs rapidly in situ at elevated temperature during spray drying, enabling the production of microgels in a large scale within a few minutes. The SRHMGs with an average size range of ∼1–4 μm contain O-acetyl-galactoglucomannan as a matrix and poly(acrylic acid), aniline pentamer (AP), and iron as functional additives, which are responsive to external changes in pH, electrochemical stimuli, magnetic field, or dual-stimuli. The surface morphologies, chemical compositions, charge, pH, and mechanical properties of these smart microgels were evaluated using scanning electron microscopy, IR, zeta potential measurements, pH evaluation, and quantitative nanomechanical mapping, respectively. Different oxidation states were observed when AP was introduced, as confirmed by UV spectroscopy and cyclic voltammetry. Systematic blood compatibility evaluations revealed that the SRHMGs have good blood compatibility. This bottom-up strategy to synthesize SRHMGs enables a new route to the production of smart microgels for biomedical applications.
Village-owned enterprises constitute a significant facet of the government's endeavours to bolster rural economic growth; however, the current scenario in Indonesia showcases a concerning trend of ...underperformance within these enterprises. This study delves into the impact of female managers on the performance of village-owned enterprises, employing cross-sectional data sourced from 100 such enterprises in East Java, Indonesia. The data was subjected to analysis through an ordered probit model. The principal finding of this study underscores the noteworthy and statistically significant influence exerted by female managers on the performance of village-owned enterprises. This observation implies that enterprises led by female managers tend to exhibit superior performance compared to those managed by their male counterparts. Concurrently, the study underscores the pivotal role of demographic profiles, such as age and education, in shaping managerial performance. These findings carry significant implications for policy formulation. They underscore the urgent need to enhance women's empowerment in rural areas, specifically by encouraging their active participation in village-owned enterprises. Additionally, the study underscores the broader importance of augmenting the knowledge and skills of both male and female managers. Such efforts hold the potential to substantially enhance the contributions of village-owned enterprises to Indonesia's economic landscape. In summary, the study's findings emphasize the pivotal role of female managers in boosting the performance of village-owned enterprises. These insights underscore the necessity of empowering women in rural settings and cultivating knowledge across genders. By addressing these imperatives, policymakers can harness the potential of village-owned enterprises for driving sustainable rural economic development in Indonesia.
This study aims to find out the impact on the TikTok application about student behavior at MTSN Nurul Huda. The type of research used is a quantitative type of research. The sample population ...numbered 87. The sample used in this study had 35 respondents using purposive sampling techniques. The theory used in this study is the CMC (computer-mediatedcommunication) theory. The data collection technique uses pearson product moment correlation by collecting data using a questionnaire or in the form of a questionnaire with 10 statement questions. So in the researchon student behavior that influences tiktok social media is with the statement of table 1, namely about the tiktok application that can help increase self-confidence, the results of 27 students agreeing and 8 students disagreeing. Table 2 positive and negative responses of users to the video made 33 sides agreed and 2 students disagreed. Table 3 issues of manners are declining due to the use of tiktok, 4 students agree 31 students disagree. Table 4 effect of tiktok downloads from friends and others, results 22 students agreed and 13 students disagreed. Table 4 objected to the withdrawal of tiktok permission by the Ministry of Communication and Information, 33 students agreed and 2 students disagreed. Table 6 doubts to re-download tiktok after its permission is allowed, 2 students agree and 33 students disagree, Table 7 becomes lazy after using tiktok, 13 students agree and 22 students disagree. Table 8 follows things that went viral on tiktok even though it was negative, 27 students agreed and 8 students disagreed. Table 9 not everyone likes tiktok 31 students agree and 4 students disagree. Table 10 became a better person after using tiktok, 30 students agreed and 5 sides disagreed.
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