In this study, we characterized the structural defects in blue and green GaInN/GaN LEDs grown on c-plane bulk GaN and sapphire substrates. Low density large V-defects with diameters around 600 nm were found in the blue LEDs on bulk GaN. They were initiated by edge-type threading dislocations (TDs) around the homoepitaxial growth interface. On the other hand, a high density 7×10 cm of smaller V-...

Sexual maturity, temporal reproductive pattern, and recruitment of juveniles were examined for the penaeoid shrimp Artemesia longinaris sampled for five and a half years in a tropical locality off the coast of São Paulo (23o S), Brazil. Monthly samples were taken from January 1998 to June 2003 at depths between 5 and 45 m. Ovarian maturity was used to examine breeding in adult females. Recruitm...

Isopropil alkohol merupakan salah satu jenis yang dapat digunakan sebagai bahan baku dalam pembuatan hand sanitizer dengan kandungan aktif 75-80% v/v. Distilasi konvensional tidak bisa dilakukan karena isopropil memiliki kemurnian rendah dan memerlukan proses pemurnian khusus titik azeotrop air pada fraksi mol 0,68. Salah metode ialah distilasi ekstraktif entrainer gliserol. Penelitian ini bert...

A simple, sensitive, rapid, precise and economical reverse phase HPLC method has been developed for the estimation of valsartan from pharmaceutical dosage forms. The was carried out using Chromatographic conditions were established by employing a C18 analytical phenomenal (Kinetex) column (5micron -C18, 250x4.6mm) with mobile phosphate buffer (PH 3.5) acetonitrile in 60:40 ratio. sample injecte...

Abstrak. Kemajuan di bidang teknologi yang begitu pesat sekarang ini, memacu semua aspek untuk mengalami perkembangan-perkembangan ke arah lebih baik terutama pada sektor pertanian sebagai salah satu komoditas utama manusia. Melalui implementasi Industri 4.0 pertanian, diharapkan proses usaha tani semakin efisien, sehingga menyebabkan peningkatan produktivitas dan meningkatkan daya saing produk...

Pineapple (Ananas comosus), Bromeliaceae family, is a fruit grows in tropical countries including Malaysia. This fruit has several pharmacological benefits due to the presence of high concentration of bromelain (cysteine proteases). Condition of elevated temperature will induce deformation of enzyme and result in loss of activity. Sulfhydryl groups in cysteine proteases are readily to be oxidiz...

Larval pupation site preference (PSP) has been studied in sibling species of D. melanogaster and D. simulans at different density and temperature. It revealed significant variation between altered and controlled experiments. D. melanogaster larvae prefer to pupate less on glass and more in media when temperature and density altered than control. D. simulans larvae prefers glass lesser than cont...

axis was explored. Materials and Methods: Ten male albino wistar rats after anesthetizing by chloral hydrate (0.5 m1/100gr body weights) were cooled to 25oC. Before and just after hypothermia, and once every 24 hours for three days; serum levels of agiotensin I and aldosterone were measured, using the radioimmunoassay method. Plasma renin activity was also determineded by the standard formula f...

Anaerobic biodegradation and characterization of wastewater produced at household level in rural areas in Jordan were considered in this study in order to investigate the possibility of applying house onsite low cost treatment systems. Results showed that the total chemical oxygen demand (CODtot) was 1.8 times higher during summer than during winter. The average CODtot during summer and winter ...