Judul: Percobaan sterilisasi jaringan tebu ( Saccharum officinarum L. ) varietas f 154
Abstrak: Penelitian ini dilakukan di Laboratorium Tumbuhan, Jurusan Biologi, Fakultas Matematika Pengetahuan Alam, Institut Pertanian Bogor. Fisiologi dan Ilmu Dilaksanakan mulai awal bulan Oktober 1989 sampai dengan akhir Maret 1990. Penelitian ini bertujuan untuk mendapatkan cara sterilisasi yang cocok untuk jaringan tebu (Saccharum officinarum L.) varietas F 154, untuk digunakan dalam penelitian lebih lanjut di bidang kultur in vitro. Telah dicoba 11 macam cara sterilisasi, dan yang terbaik bagi jaringan tebu adalah sterilisasi dengan menggunakan HgCl2 0,2% selama 1 sampai 5 menit. Dari hasil percobaan juga didapatkan bahwa Sublimat (HgCl2) selain mengatasi kontaminasi juga dapat mengatasi reaksi pencoklatan. Untuk kecepatan pertumbuhan kalus medium. yang baik digunakan adalah MS (Murashige dan Skoog) + vitamin 100 ml/l air kelapa 1 mg/l kinetin + 7 gram/l agar + sukrosa (30 gr/1), dengan tingkat konsentrasi 2,4-D 8 mg/1.
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Judul: Pembentukan dan regenerasi klalus tanaman tebu (Saccharum offcinarum L.) varietas F 154 secara In vitro
Abstrak: Penelitian ini dilakukan di Laboratorium Fisiologi Tumbuhan, Jurusan Biologi, Fakultas Matemetika dan Ilmu Pengetahuan Alam, Institut Pertanian Bogor. Penelitian dimulai sejak bulan Juni 1998 sampai dengan bulan Maret 1991. Tujuan penelitian ini ialah mengetahui kemampuan pembentukan kalus dan regenerasi kalus tebu varietas F 154 (BZ 132) dalam kultur in vitro. Perlakuan pada tebu ini terdiri dari medium dasar Mu- rashige dan Skoog (MS) dengan 4, 6 dan 8 mg/1 2,4-Dikloro- fenoksi asam asetat (2,4-D) dan suhu dingin (80) selama nol dan tiga hari pertama. Masing-masing ulangan 10 kali. Eksplan berasal dari tunas tebu yang berumur dua bulan. Sub kultur dilakukan pada saat umur kultur kalus berumur 12 minggu. Medium yang digunakan untuk regenerasi kalus ini adalah medium MS tanpa 2,4-D. Pengamatan terhadap percobaan ini meliputi persentase pencoklatan, waktu timbulnya kalus, warna kalus, waktu pembentukan tunas dan akar serta persentase pembentukan tunas dan akar dari kalus....
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Judul: Self-Declared Aggression is Not Perceived in Indonesian Male Faces
Abstrak: Facial features provide a powerful means of non-verbal communication, offering insights into a person’s gender, age, and tendencies toward aggression. Aggressivity is a characteristic of dominating, protecting position, and fighting over resources. This behavior is commonly observed across the animal kingdom, including in humans. Human aggressive behaviors manifest as anger, hostility, and physical or verbal aggression. Previous studies in Western societies have shown that human aggression can be perceived from the faces; a notable gap exists in understanding its perception in non-Western contexts. In this study, 100 Indonesian adult males from the Jakarta Metropolitan Area, aged 17 to 62, were asked to provide demographic information and complete the Buss-Perry Aggression Questionnaire (BPAQ) and Overt Aggression Scale Modified (OASM) to measure long-term and short-term aggression scales, respectively. Average facial photographs were generated based on participants' BPAQ and OASM scores for the low aggressivity (min-Q1) and high aggressivity (Q3-max) groups. Subsequently, A total of 212 male and 294 female raters evaluated the perceived aggressivity of these averaged faces. The resulting mean±SD of their BPAQ scales (BPAQ Total Aggression, Anger, Hostility, Physical Aggression, and Verbal Aggression) were 71.50±15.19, 17.36±4.35, 21.15±5.58, 19.27±5.05, 13.72±3.24. Then, the resulting mean±SD of their OASM scales (OASM Total Aggression, Verbal Assault, Aggression Against-Objects, Aggression Against-Others, Aggression Against-Self) were 6.17±2.51, 2.21±3.95, 1.50±3.80, 1.44±3.72, 1.02±11.61. The study findings align with existing research on the impact of genetic, environmental, and hormonal factors on aggressive behaviors, noting higher aggression scores among younger males and those with higher incomes. This study also reveals that private employees exhibit higher short-term aggression scores than students. Additionally, individuals with higher education levels and lower income tend to show increased short-term aggression. Moreover, none of the demographic factors in this study significantly impacted the choices made by raters of either gender.
Keyword: BPAQ, face, perception, OASM, socio-demographic