Judul: Keanekaragaman Jenis Herpetofauna di Cagar Alam Donoloyo Kabupaten Wonogiri Provinsi Jawa Tengah
Abstrak: Penelitian amfibi dan reptil kebanyakan dilakukan di hutan alam dan sedikit sekali di hutan tanaman. Salah satu kawasan hutan tanaman jati di Jawa terdapat di Cagar Alam Donoloyo. Walaupun merupakan hutan tanaman, kayu jati yang ada tidak di panen karena kepercayaan masyarakat lokal. Pengambilan data dilakukan pada 3-27 april 2016. Penelitian ini dilakukan untuk mengidentifikasi keanekaragaman jenis amfibi dan reptil yang ada di Cagar Alam Donoloyo. Penelitian dilakukan menggunakan metode Visual Encounter Survey (VES) di sepanjang transek (5 jalur terrestrial dan 2 jalur akuatik). Hasil penelitian mendapatkan 14 jenis reptil. Jenis yang banyak ditemukan adalah Gekko gecko, Fejervarya limnocharis, Fejervarya cancrivora, dan Limnonectes microdiscus. Dibandingkan penelitian herpetofauna di daerah lain di Jawa Tengah, jumlah jenis yang ditemukan lebih sedikit.
Keyword: amfibi, cagar alam Donoloyo, Jawa Tengah, reptil

Judul: Keanekaragaman Jenis Reptil pada Kantong Hutan di Bogor
Abstrak: Hutan Penelitian (HP) Dramaga dan Kawasan Hutan dengan Tujuan Khusus (KHDTK) Haurbentes di Bogor merupakan contoh hutan yang terfragmentasi di dekat pemukiman. Tujuan penelitian ini yaitu untuk mengukur indeks keanekaragaman, kemerataan dan kekayaan reptil di kantong hutan. Metode pengambilan data menggunakan Visual Encounter Survey (VES) dikombinasi dengan line transect dan passive sampling. Reptil yang ditemukan sebanyak 8 famili dari 16 jenis terdiri atas 85 individu. Beberapa jenis reptil yang ditemukan memiliki status Least Concern (LC) atau beresiko rendah berdasarkan daftar merah IUCN. HP Dramaga memiliki indeks keanekaragaman dan kemerataan tertinggi dibandingkan KHDTK Haurbentes. KHDTK Haurbentes memiliki indeks kekayaan tertinggi dibandingkan HP Dramaga. Kelimpahan tertinggi di HP Dramaga adalah jenis Bronchocela jubata (2.44 ind/jam), sedangkan KHDTK Haurbentes adalah jenis Cyrtocadtylus cf marmoratus (5.91 ind/jam). Kesamaan komunitas tertinggi yaitu HP Dramaga pada jalur 2 dan jalur 3.
Keyword: hutan penelitian dramaga, kantong hutan, keanekaragaman, KHDTK haurbentes, reptil

Judul: Enhancement of photon absorbtion on BaxSr1-xTiO3 thin films semiconductor using photonic crystals.
Abstrak: In this research, has been conducted BaxSr1-xTiO3 (BST) thin films manufacturing for mole fraction x = 0.25, 0.35, 0.45, and 0.55; and concentration of 1 molar using chemical solution depositon (CSD) method. The materials, which are used in this research, are barium acetate [Ba(CH3COO)2, 99%], strontium acetate [Sr(CH3COO)2, 99%], titanium isopropoxide [Ti(C12O4H28), 97.999%], gallium trioxide [Ga2O3], 2-methoxyethanol [H3COOCH2CH2OH, 99%] and 1 x 1 cm of transparent conductive oxide (TCO) glass as substrate. Two BST thin films are made that for BST thin films which are doped by 10% galium (BGST) as p-type layer and pure BST solution as n-type. BST solution is made by reacting barium acetate [Ba(CH3COO)2, 99%], strontium acetate [Sr(CH3COO)2, 99%] and titanium isopropoxide [Ti(C12O4H28)] into 2-methoxyethanol solvent [H3COOCH2CH2OH, 99%] in accordance with mass gram for each x value. While, BGST solution is made in the same way as BST solution, plus adding gallium at 10% of the mass of BST. Once all materials are reacted, then vibrated using ultrasonic for 90 minutes, and followed by coating BGST / BST on the TCO substrate. Once the layer is formed, then annealed for 15 hours at temperature of 500 °C with increasing rate of 1.67 oC/minute. Characterizations of BST thin films with or without photonic crystals include the absorbance and transmittance in the visible light spectrum, as well as the electrical photoconductivity characterizations. From BST thin films without photonic crystals indicate that our thin films have light absorption area on almost the entire range of the visible light spectrum even to the infrared range with absorption value over than 67.6%, in addition, it can be seen that the maximum absorbance of BST thin films for all mole fractions lie in blue to green light spectrum region, 457 nm ≤ λ ≤ 570 nm and the minimum in yellow to red light spectrum region, 570 nm ≤ λ ≤ 678 nm. The largest absorbance is found at x = 0.25 with average absorbance value of 92.04% and maximum and minimum absorbance peaks at wavelength of 500.89 and 657.72 nm, respectively. At x = 0.35, average absorbance value decreased to 83.55% with maximum and minimum peaks at 505.73 and 613.68 nm, respectively. Then increased to 91.16% at x = 0.45 with maximum and minimum peaks at 506.04 and 618.56 nm, respectively. At x = 0.55, average absorbance value decreased to 80.12% with maximum and minimum peaks at 507.85 and 608.79 nm, respectively. Moreover, it can be seen that the addition of barium mole fraction leads to wider maximum absorbance or minimum transmittance peaks and narrower minimum absorbance or maximum transmittance peaks in the same range of the green and blue & red light spectrums, respectively. BST thin films with photonic crystals show increasing in absorption for all x values in the range of 3.04 into 13.33%. At x = 0.25, average absorbance percentage increased 3.96% from 92.4 into 95.68%, for x = 0.35 average percentage increased 7.07% into 89.45 from 83.55%. Furthermore, average absorbance of BST thin films at x = 0.45 increased 3.04% from 91.16 into 93.93% and x = 0.55 has
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