Judul: Efek Suplementasi Selenium dan Vitamin E Terhadap Status Antioksidan Unggas : Kajian Non Eksperimental
Abstrak: Selenium dan vitamin E merupakan antioksidan yang dapat meningkatkan sistem imun. Penelitian ini bertujuan mengetahui pengaruh dari level pemberian selenium dan vitamin E pada status antioksidan unggas dengan metode analisis regresi dari data penelitian sebelumnya. Data yang digunakan sebanyak 95 titik yang berasal dari 23 studi yang melaporkan suplementasi selenium terhadap status antioksidan unggas serta sebanyak 57 titik data dari 16 studi yang melaporkan suplementasi vitamin E terhadap status antioksidan. Peubah yang digunakan meliputi aktivitas glutation peroksidase (GSH-Px) dan kadar malondialdehid (MDA). Data dianalisis menggunakan analisis regresi linier dan kuadratik dengan perangkat lunak IBM SPSS versi 26. Hasil analisis menujukkan bahwa suplementasi selenium tidak berpengaruh signifikan (P>0,1) pada aktivitas GSHPx, namun cenderung signifikan (0,1�����P>0,05) terhadap penurunan kadar MDA. Suplementasi vitamin E juga tidak berpengaruh signifikan (P>0,1) pada aktivitas GSH-Px, namun cenderung signifikan (0,1�����P>0,05) terhadap penurunan kadar MDA. Dapat disimpulkan bahwa suplementasi selenium dan vitamin E berpengaruh dalam penurunan kadar MDA., Selenium and vitamin E are antioxidants which can improve immune system status on poultry. The aim of this study was to examine the effect of selenium and vitamin E levels on the antioxidant status of poultry using a linear and quadratic regression model on secondary data obtained from Scopus indexed and international reputable journals. The data used were 95 data points from 23 journals which reported different levels of selenium on poultry antioxidant status and 57 data points from 16 journals which reported various levels of vitamin E on poultry antioxidant status. The observed parameters were glutathione peroxidase (GSH-Px) activity and malondialdehyde (MDA) level. Data were analyzed by linear and quadratic regression analysis using IBM SPSS software version 26. The results showed that selenium supplementation had no significant effect (P>0.1) on GSHPx activity, but slightly decrease on MDA (0.1 ����� P>0.05). Vitamin E supplementation had no significant effect (P>0.1) on GSH-Px activity, but slightly significant on MDA (0.1�����P>0.05). It can be concluded that selenium and vitamin E supplementation decreasing MDA level on poultry.
Keyword: antioxidant status, poultry, regression analysis, selenium, vitamin E

Judul: Pengaruh Suplementasi Vitamin E dan Selenium dalam Ransum terhadap Kualitas Telur dan Profil Darah Ayam Petelur Umur 45- 51 Minggu
Abstrak: Vitamin E and selenium are primary antioxidants and essential microminerals, that has synergism interaction to prevent lipid peroxidation damage in the body cell. This study was aim to determine the effect of supplementation vitamin E, selenium, and its combination on egg quality, selenium content of egg, and blood profile. A Completely Randomized Design (CRD) with 4 treatments and 4 replication was used in this experiment. The variables observed were egg quality, selenium content of egg, and blood profile. This study used 96 of 45 weeks old of Isa Brown layer. The treatments were P1 = control diet, P2 = P1 + 0.8 mg kg-1 selenium, P3 = P1 + 300 mg kg-1 vitamin E, P4 = P1 + 300 mg kg-1 vitamin E + 0.8 mg kg-1 selenium. The results showed that selenium 0.8 mg kg-1 was affected decreased shell thickness. Supplementation of Selenium, vitamin E and its combination increased egg selenium content.
Keyword: vitamin E, selenium, egg quality, blood profile

Judul: Klasifikasi Spasial untuk Objek Spasial di Kota Bogor
Abstrak: Various spatial objects in Bogor City have caused a significant increase of spatial data in Bogor City. These spatial data needs to be processed and analyzed using spatial data mining technique, which is able to extract the knowledge or patterns in the spatial database. This research extracts the patterns of terminals, stations, railroads, rivers, roads, and landuse characteristics using one of the spatial data mining techniques, namely spatial classification. In this research, the spatial relations between an object and its surrounding is determined using topological relations, with spatial operations such as contains, overlaps, equals, disjoint, intersects, within, crosses, and touches. The result of spatial classification accuracy using C4.5 algorithm is 72.117%. From this spatial classification result, the characteristics of spatial objects in Bogor City can be identified based on spatial operations.
Keyword: spatial data mining, spatial classification, C4.5 algorithm