The enzymes laccase (Lac), manganese peroxidase (MnP), and lignin peroxidase (LiP) are ligninolytic enzyme groups that have a crucial role in degrading lignin compounds. These complex components are abundant in plant biomass. This research aims to isolate and characterize microorganisms producing the enzymes Lac, MnP, and LiP from leaf litter, rhizosphere soil, and sediment in the Gunung Lumut Protected Forest (GLPF) and Sungai Wain Protected Forest (SWPF), East Kalimantan. The bacterial and fungal isolates obtained were cultured on NA and PDA media enriched with 0.05% guaiacol as a substrate. Initial selection was carried out based on the colony growth rate and the formation of a brownish discoloration zone, which indicates ligninolytic enzyme activity. The superior isolates were then tested for extracellular enzyme activity quantitatively using a UV-Vis spectrophotometer. Among the bacterial isolates, the highest Lac activity is isolated GLS 5.1.2 (173.44 U L-1); the highest MnP activity is isolated GLS 5.3 (177.41 U L-1); and the highest LiP activity is isolated GLS 5.1.2 (1034.05 U L-1). In the group of fungi, isolate SS2 was detected with the highest Lac activity (20.66 U L-1), MnP activity (333.75 U L-1), and LiP activity (2516.13 U L-1). Biodiversity sources in the Gunung Lumut Protected Forest (GLPF) and Sungai Wain Protected Forest (SWPF), East Kalimantan have the potential to produce microbial isolates with unique enzymatic characteristics that have never been reported before. The resulting microbial isolate can be used as a bioactivator in composting organic waste to produce high-quality organic fertilizer.

The growth of the coffee shop business in Indonesia has increased very rapidly. The growth of the coffee shop business does not only occur in big cities, but has also penetrated into small cities, one of which is Serang City. The proliferation of coffee shops in Serang City requires business people to implement effective marketing communications to achieve business goals. This research analyzes the marketing communication strategies implemented by three coffee shops in Serang City, namely Kalanoia Coffee, Aish Coffee Serang City, in attracting consumer buying interest. Using a qualitative approach and descriptive method, data was collected through interviews, observation, and documentation, then analyzed with the 7P Marketing Mix concept (Product, Price, Place, Promotion, People, Process, Physical Evidence). The results showed that the three coffee shops carried out marketing communication strategies in attracting consumer buying interest. The strategy is carried out through social media as a promotional medium, providing various promo programs to attract buying interest, and collaboration with influencers to expand market reach. Although each applies a different approach according to their characteristics and target market. All three have their own uniqueness that can differentiate them from competitors.

Pertukaran data antar komputer secara global memungkinkan komunikasi yang melibatkan informasi berupa gambar dan video. Informasi yang memiliki nilai tinggi memerlukan standar keamanan untuk menjaganya. Tujuan utama keamanan komputer adalah melindungi informasi tersebut, yang sekaligus meningkatkan privasi. Perlindungan privasi karyawan dalam sebuah perusahaan menjadi hal penting dalam implementasi sistem informasi. Kebijakan keamanan sistem informasi mencakup pemeliharaan sistem, manajemen risiko, pengaturan hak akses dan manajemen sumber daya manusia, keamanan aset informasi, dan kebijakan server. Kebijakan ini tidak hanya melindungi informasi perusahaan, tetapi juga menjaga kerahasiaan karyawan.

Participation from all parties is important in post-disaster rehabilitation and reconstruction because it is the most complex activity in disaster management from the planning process, funding, and implementation. A Tsunami that struck Sunda strait in December 2018 caused a great loss and immediate response is necessary. The delay of rehabilitation and reconstructions affected the stability of national security. Therefore, all parties need to take part in post-tsunami recovery so that the disaster recovery process implemented effectively and efficiently. The purpose of this study was to analyze the participation of society in the post-tsunami rehabilitation and reconstruction management in Pandeglang district, coordination networking, and contributions to national security. The qualitative method is used in this research from the primary and secondary databases. For the purposes of this study, the primary data were gathered through face-to-face interviews from the subjects of research who were chosen based on purposive sampling and snowball methods. The data analyzed qualitatively and simulation by UCINET 6 is used for coordination networking. The result shows that all parties had taken part in the Pandeglang post-tsunami recovery management from the planning process, implementation, monitoring, and evaluations. The level and form of community participation are diverse.

This activity aims to socialize the importance of school and family synergy in children's social and emotional development. This activity uses a lecture method, namely by presenting socialization material followed by questions and answers between the presenter and participants. During childhood, children's emotional development is not yet stable, so it becomes a problem for children in socializing. For example, temper tantrums, anxiety, phobias, and aggression. In Kindergarten in Popodu village, Bolaang Uki district, these problems arise more often because the social environment is wider and more diverse than the family. To overcome these problems, school and family synergy is needed. The implementation of socialization begins with the presentation of the first resource person, then continues with the second resource person and ends with a question and answer session for participants and resource persons. This activity produces additional information for participants in the form of understanding and knowledge about the importance of collaboration between teachers and parents in developing children's social emotions. Forms of collaboration that can be carried out include: dialogue and meetings between teachers and parents, involving parents and teachers in efforts to support children's development both in the family and at school as well as reciprocal visits between teachers and parents at home and at school.

Services to residents in RW 10 Kayumanis, Matraman sub-district, if you want to make a cover letter for RT, the RW still experiences a manual system by coming directly to the RT secretariat's house. The problem is that it often happens that the RT is not at home. To overcome administrative problems, the author makes a web-based administration application in the Kayumanis village by changing the procedure from manual to computerized and to provide the best service for residents. The system development method used is SDLC starting from requirements making needs analysis of procedures in data services at the local RT, both designs making data service system designs using use case modeling, activity diagrams and proposal diagrams, the third stage of implementation is implementing from design to source. code according to the flow, the last stage of testing is testing the population administration service application accompanied by the head of the local RT.

Arabic is a very special language. In addition to being the language of the holy book of the al-Qur'an, Arabic is also an international language agreed upon by the United Nations. However, not many people can communicate or speak Arabic in Indonesia. Many factors are the cause, such as a lack of vocabulary savings and not being used to speaking Arabic. From the emergence of these problems, it raises the question of how to make many people who have a lot of Arabic vocabulary so that they can speak Arabic fluently. To overcome this problem, the author conducted a study on the effect of using Duolingo application as a media innovation to improve Arabic speaking skills. The author uses a survey method by giving several questions to fifteen respondents from the Cipulus Wanayasa Islamic Boarding School students as a tool to collect data. The results showed that 74.6% respondents' answers agreed that Duolingo application had an effect on improving Arabic speaking skills and 25.4% respondents' answers gave an ordinary opinion that had no effect. From the results, the authors can conclude that there is an effect of Duolingo application for improving students' Arabic speaking skills. This application is very useful for those who want to learn Arabic on their own.