Judul: Pengaturan Hasil Berdasarkan Jumlah Pohon pada Hutan Alam Bekas Tebangan di Provinsi Maluku
Abstrak: Beragamnya struktur tegakan hutan alam bekas tebangan, mengharuskan pengaturan hasil menggunakan pendekatan secara khusus, yaitu dengan memperhatikan karakteristik tegakannya. Informasi mengenai karakteristik struktur tegakan dan dinamika struktur hutan alam bekas tebangan sangat dibutuhkan dalam menduga struktur tegakan hutan masa yang akan datang guna penyusunan rencana pengelolaan hutan. Tujuan penelitian ini adalah untuk memperoleh model dugaan dinamika struktur tegakan yang kemudian digunakan sebagai dasar untuk pengaturan hasil tebangan. Jangka waktu yang dibutuhkan untuk mencapai struktur tegakan siap tebang pada rotasi berikutnya sangat tergantung pada intensitas tebangan yang diterapkan, semakin tinggi intensitas tebangan yang diterapkan semakin panjang jangka waktu yang dibutuhkan untuk mencapai struktur tegakan siap tebang pada rotasi berikutnya. Penurunan batas diameter ditebang dari 50 cm ke atas menjadi 40 cm ke atas dapat memperpendek rotasi tebang. Selain itu, juga dapat meningkatkan volume hasil tebangan.
Keyword: Bogor Agricultural University, Institut Pertanian Bogor, IPB, Dynamics, Intensity, Regulation, Rotation, Cutting

Judul: Pengaturan Hasil Berdasarkan Jumlah Pohon pada Hutan Alam Bekas Tebangan di Provinsi Maluku
Abstrak: The diversity of the logged over area natural forest stand structure, requires yield regulation used approach specifically, that takes into account the characteristics of its standing. Information about the characteristics of stand structure and structural dynamics of natural forest is needed in the logged-over forest stand structure suspect future for forest management planning. The purpose of this study is to obtain the dynamic model of the alleged stand structure which is then used as the basis for setting felled. Length of time required to reach the structure stands ready to harvest in the next rotation depends on felling intensity applied, the higher the intensity of felling the longer term applied to the time required to reach the structure stands ready for harvest in the next rotation. Decrease in diameter limit cut from 50 cm up to 40 cm above can shorten the cutting cycle. In addition, it can also increase the harvested volume.
Keyword: 

Judul: Durability of Specific Immunoglobulin (Ig) Y Againts Influenza and Covid-19 in Sunscreen
Abstrak: The benefit of specific immunoglobulin Y (Ig Y) as an active ingredient in personal care products such as sunscreen has not been properly studied. Our study aims to evaluate the reliability of specific IgY against influenza and the COVID-19 virus in a sample sunscreen product. Specific IgY influenza and COVID-19 viruses were inserted in the sample sunscreen at two concentrations of 0.1% and 0.25%. Three treatments were observed: control (C) sunscreen without IgY, treatment 1 (T1) sunscreen with 0.1% IgY, and treatment 2 (T2) sunscreen with 0.25% IgY. Organoleptic observations were carried out to monitor changes in aroma, color, and texture, and sunscreen sampling was done every week for 6 weeks. The durability of IgY was evaluated using an enzyme-linked immunosorbent assay (ELISA) and a neutralization assay. Organoleptic observation from weeks 1 to 6 showed consistency in its aroma, color, and texture. Enzyme-linked immunosorbent assay and neutralization assay (NA) results of the T1 and T2 groups showed negative results except for sample T1 at week 5, which showed a positive result in the Influenza A ELISA. Based on the results, it seems that IgY concentrations of 0.1% or 0.25% were not optimal. However, this negative result might be due to low concentration of the IgY and the presence of beeswax, which inhibits IgY and causes it to dissolve in distilled water, thus preventing it from being detected in the assay.
Keyword: Immunoglobulin Y, Sunscreen, Influenza, COVID-19, Biological Activity