Judul: Pemetaan Perubahan Kerapatan Kanopi Hutan di Hutan Rakyat, Kabupaten Kuningan, Jawa Barat
Abstrak: Emisi karbon dioksida dari sektor kehutanan dapat berasal dari deforestasi dan degradasi hutan. Pengukuran deforestasi hutan lebih mudah dilakukan dari pada degradasi hutan. Kerapatan kanopi hutan (Forest Canopy Density/FCD) dapat menjadi variabel penduga dinamika degradasi hutan. Penelitian ini bertujuan untuk mencari hubungan keeratan antara Forest Canopy Density (FCD) dan parameter tegakan yang diukur di lapangan. Penelitian dilakukan di hutan rakyat Kabupaten Kuningan Jawa Barat. Analisis regresi linier sederhana menunjukan koefisisen determinasi terbesar adalah hubungan antara FCD dengan luas bidang dasar tegakan, sebesar 0.71. Persamaan regresi linier hubungan antara FCD dengan LBDT adalah persamaan ini dapat digunakan untuk memprediksi LBDT dengan data FCD. Nilai ketepatan dari model regresi linier ini sebesar 18.98%. Penelitian ini juga bertujuan untuk mengetahui perubahan kerapatan kanopi di hutan rakyat Kabupaten Kuningan pada tahun 1991-2002 dan tahun 2002-2009.
Keyword: degradasi, FCD, hutan, reforestasi, regresi

Judul: Pemetaan Perubahan Forest Canopy Density di KPH Kuningan
Abstrak: Changes in the quality of the forest, including forest degradation, can be estimated by measuring the density of the forest canopy. Forest canopy density (FCD) is influenced by variables such as leaf area index, basal area and stand density. The analysis of Landsat imagery acquired in 1991, 2002 and 2012 showed that FCD in KPH Kuningan area has changed. During the period of 1991- 2002, the decreased FCD was about 206.68 ha, meanwhile 4504.18 ha area has showed an increase. In the period of 2002-2012, the decreased FCD was 1826.72 ha and 3311.82 ha increase. Among the three variables tested, stand density has the strongest association with FCD (R ² = 0.79) and its relation was follow equation Kerapatan Tegakan (KT) = 7.05+4.73FCD. The error accuracy of prediction model was 6.2%, which means that the model has high accuracy
Keyword: stand density, leaf area index, forest degradation, forest canopy density, basal area

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