Chairunnisa Chairunnisa

Adsorption thermal energy storage plays a vital role in supporting the availability of renewable energy. Activated carbons produced from local waste biomass have been attracting considerable attention in adsorption technology due to their unique properties and sustainability. However, their limitation in water vapor uptake hinders the practical application of this material. In this work, acorn nutshells were utilized as a base material to produce activated carbon. Air oxidation was performed as

Desiccant dehumidification systems can be utilized for decoupling moisture removal duty from the conventional mechanical vapor compression systems. Dehumidification using desiccant dehumidifiers is expected to exhibit a better energy efficiency. However, the high energy needed in the regeneration process limits its applicability. To realize the full potential of this technology, it is necessary to develop materials that can be regenerated using heat sources under 70 °C. In this study, activated

Infectious diseases and antibiotic resistance becomes a problem that must be resolved. Plant based products are among the alternative agents examined in order to replace conventional antibiotics. Cinnamaldehyde is one of the compound in cinnamon oil that has antibacterial activity. But the other compounds in cinnamon oil has also the potential antibacterial activity. The purpose of this study to conduct GC-MS analysis of cinnamon oil and its antibacterial activity to Staphylococcus aureus and Es

The green preparation of microporous activated carbon using acorn nutshell with different production conditions was studied. The heating rate and nitrogen flow rate were controlled during preparation. The effect of those conditions on the surface properties and water adsorption performance was observed. According to the results, the total surface area of acorn nutshells-based activated carbon can reach up to 993 m 2 /g with 90% microporosity and a total pore volume of 0.49 cm 3 /g. The water ads

Kita harus menyadari bahwa membaca mempunyai peranan sosial yang sangat penting dalam kehidupan manusia sepanjang masa. Mengapa demikian? Pertama, membaca itu merupakan suatu alat komunikasi yang sangat di perlukan dalam suatu masyarakat berbudaya. Kedua bahan bacaan yang dihasilkan dalam setiap kurun kurun zaman dalam sejarah sebagian besar dipengaruhi oleh latar belakang sosial tempatnya berkembang itu. Ketiga, sepanjang masa sejarah yang terekam, membaca telah membuahkan dua kutub yang amat b

This paper explained about the language acquisition of the infant and child. The language acquisition involved the research method and language development. Some researcher conducted the research by using some methods and designs such as diary and parental report, interview, observation, and experiment. The researcher also identified the process of childrens’ language acquisition and also identified the process of acquisition. In this paper also describe the speech perception development, proces

This systematic study aims to examine the research results on employee engagement, provide a comprehensive overview of employee involvement, and explore concepts. Methods: The research method used here is a literature review using journals from both national and international through accredited databases such as Google Scholar, ScienceDirect, Scopus, and Garuda. The search used secondary data from February 14th to May 8th, 2023. Using the keywords employment, AND work AND engagement AND of AND e

Penelitian tentang “Rekonstruksi Miskonsepsi Siswa pada Konsep Materi Genetik melalui Penerapan Model Learning Cycle 7e” telah dilaksanakan di SMA Negeri 1 Sigli Kabupaten Pidie pada bulan Maret sampai dengan April 2015. Penelitian ini bertujuan mengetahui pengaruh penerapan model pembelajaran Learning Cycle 7e terhadap peningkatan penguasaan konsep siswa, kemampuan rekonstruksi miskonsepsi siswa dan penurunan miskonsepsi siswa pada materi genetik. Metode yang digunakan dalam penelitian ini adal

Low-cost adsorbents from cassava leaves (CLP) were prepared by simply washing the leaf powder with deionized water. The adsorption of methylene blue (MB) from the aqueous solution was measured in order to examine the adsorbent performance. The effect of the pH of the solution was studied by varying pH from 2 to 10. The kinetics of MB adsorption onto CLP followed the pseudo-second-order kinetic model with a k-value of 0.087907 g mg-1 min-1 and 0.094081 g mg-1 min-1 for CLP before and after washin

The research about the balancing of redox reaction on chemistry subject has been done. This research was conducted on class XII IPA8 SMA Negeri 2 Palu with 28 of the student, in the first semester of the academic year 2014-2015. The research method used is a descriptive qualitative in which data processing use percentages and rating scale. The data is collected by observation sheets, questionnaires, and documentation. Implementation of lesson study on class XII IPA8 SMA Negeri 2 Palu is conducte

Konsumsi bahan bakar di Indonesia telah melebihi produksi dalam negeri. Dalam kurun waktu 10-15 tahun ke depan cadangan rainyak bumi Indonesia diperkirakan akan habis. Oleh karena itu, usaha untuk mencari bahan bakar alternatif yang dapat diperbaharui (renewable), ramah lingkungan dan bernilai ekonomis, semakin banyak dilakukan. Limbah industri kayu dan pertanian seperti serbuk gergaji ulin dan serbuk gergaji kayu biasa yang banyak terdapat di Banjarmasin belum termanfaatkan sepenuhnya. Proses p