Judul: Characteristic of Instagram User dan Exposure of Pro-Environmental Campaign via  Instagram and Pro-Environmental Awareness
Abstrak: Kerusakan lingkungan adalah permasalahan yang dihadapi oleh Indonesia bahkan dunia. Kampanye lingkungan berperan untuk menumbuhkan kesadaran pro-lingkungan di masyarakat luas. Kampanye lingkungan dilakukan melalui media sosial Instagram. Tujuan penelitian ini adalah untuk menganalisis hubungan antara karakteristik pengguna Instagram dan keterdedahan kampanye pro-lingkungan melalui media sosial dalam meningkatkan kesadaran pro-lingkungan pengguna media sosial. Penelitian ini mengambil kasus akun media sosial Instagram @sayapilihbumi dalam kampanye pro-lingkungan dengan responden berjumlah 82 orang dengan teknik pengambilan sampel secara aksidental. Variabel penelitian ini terdiri atas karakteristik pengguna Instagram, keterdedahan kampanye pro-lingkungan, dan kesadaran pro-lingkungan. Data diolah dengan menggunakan uji korelasi Rank Spearman untuk data ordinal dan uji Chi-Square dengan alternatif uji Fisher’s Exact untuk data nominal. Hasil penelitian menunjukkan bahwa kesadaran pro-lingkungan pengguna Instagram tinggi. Hasil uji korelasi dan Fisher’s Exact menunjukkan karakteristik pengguna Instagram tidak berhubungan dengan kesadaran pro-lingkungan pengguna Instagram, sedangkan keterdedahan kampanye pro-lingkungan berhubungan dengan kesadaran pro-lingkungan pengguna Instagram., Environmental damage is a problem faced by Indonesia and even the world. Environmental campaign to raise pro-environment awareness in the wider community. Environmental campaigns are carried out through Instagram. The purpose of this study was to analyze the relationship between the characteristics of Instagram users and the exposure of pro-environmental campaigns through social media in increasing pro-environmental awareness of social media users. This study takes the case of the Instagram social media account @sayapilihbumi in a pro-environment campaign with respondents, 82 people with accidental sampling techniques. The variables of this research consist of characteristics of Instagram users, exposure to pro environment campaigns, and pro-environment awareness. The data was processed using the Spearman Rank correlation test for ordinal data dan Chi-Square test with alternatif Fisher’s Exact test untuk data nominal. The results showed that the pro-environmental awareness of Instagram users was high. The results of the correlation test show that the characteristics of Instagram users are not related to pro-environmental awareness of Instagram users, while the exposure of pro-environment campaigns is related to pro-environmental awareness of Instagram users.
Keyword: campaign exposure, pro-environment, pro-environment awareness

Judul: The Perception Effectiveness of Environmental Message about Forest Conservation through Instagram (Case Instagram @lindungihutan)
Abstrak: Permasalahan pada pesan lingkungan yang sulit dipahami oleh masyarakat, maka pendidikan dan kampanye lingkungan yang efektif diperlukan untuk meningkatkan kesadaran tentang penting nya menjaga lingkungan. Media sosial yang potensial digunakan adalah Instagram. Penelitian bertujuan mengetahui persepsi efektivitas pesan pada Instagram menggunakan teori Persepsi Efektivitas Pesan. Metode penelitian menggunakan pendekatan kuantitatif yang didukung oleh data kualitatif, dengan metode survei terhadap 146 responden yang dipilih menggunakan teknik non-probability sampling dan beberapa responden terjaring melalui teknik (snowball sampling). Hasil penelitian menunjukkan 1) Bentuk framing positif dan negatif tidak ada perbedaan dalam membentuk persepsi efektivitas pesan; 2) Karakteristik psikografis responden, mayoritas memiliki keterlibatan isu dan persepsi risiko lingkungan yang tinggi; 3) Pada persepsi efektivitas pesan, persepsi pesan responden baik. Pesan lingkungan dapat memberikan efek pesan yang baik bagi responden; 4) Terdapat perbedaan persepsi efektivitas pesan pada tingkat keterlibatan isu dan tingkat persepsi risiko lingkungan., The problem is that environmental messages are difficult to understand, so effective environmental education and campaigns are needed to increase awareness. Social media has the potential to be used to convey environmental messages is Instagram. The research using the theory of Perceived Message Effectiveness. The research method uses a quantitative supported by qualitative data, with a survey of 146 respondents selected using a non-probability sampling and snowball sampling technique. The research results show 1) There is no difference in positive and negative forms of framing in forming perceptions of message effectiveness; 2) Psychographic characteristics of respondents, the majority have high issue involvement and environmental risk perception; 3) The respondent's message perception is good. Environmental messages can have a good message effect for respondents; 4) There are differences in perceptions of message effectiveness at the level of issue involvement and the level of environmental risk perception.
Keyword: Instagram, Persepsi efektivitas pesan, Pesan lingkungan, Instagram, perception of message effectiveness, environmental message

Judul: Synthesis of Biphasic Calcium Phosphate Made of Eggshells Through A Hydrothermal Method
Abstrak: Biphasic Calcium Phosphate mixed of hydroxyapatite and tricalcium phosphate. A hydrothermal method of synthesizing by mixing CaO as calcium source and (NH4)2HPO4 as phosphate source with distilled water. CaO got from calcination process made of eggshells. All samples were synthesized using hydrothermal reactor then followed by sintering process. The molar ratio of Ca and P for all samples was 0.5 M : 0.3 M. Hydrothermal temperature and sintering temperature were variated they are 250 ºC, 300 ºC for hydrothermal and 800 ºC, 900 ºC, 1000 ºC for sintering, higher treatment temperature, tricalcium phosphate appears. Final results of synthesis were characterized by using X-ray Diffraction and Fourier Transform Infrared. X-ray Diffraction patterns was ecompared with database Join Committee on Powder Diffraction Standards and found tricalcium phosphate and hydoxyapatite.
Keyword: biphasic calcium phosphate, hydrothermal, hydroxyapatite, tricalcium phosphate