Sampai saat ini belum ada seorang ilmuwan pun yang berhasih memecahkan masalah bagaimana asal-usul kehidupan di bumi ini. Banyak teori atau paham-paham yang dikemukakan oleh ilmuwan mengenai masalah tersebut, tetapi semuanya belum dapat memberikan jawaban yang memuaskan.Sebenarnya sudah sejak zaman Yunani Kuno manusia berusaha memberikan jawaban terhadap masalah asal usul kehidupan tersebut. Namun, jawaban itu [...]
Archive for March, 2008
ASAL USUL KEHIDUPAN (THE BEGINNING OF LIFE)
Posted in Indonesian on March 21, 2008 | Leave a Comment »
The kidney
Posted in Biomed World on March 19, 2008 | Leave a Comment »
The kidneys are organs that filter waste products out of the blood and excrete then e.g. urea along with water as urine.
Urea is made by the liver. Excess amino acids can’t be stored therefore the liver breaks them down to urea.(ornithine cycle).
The Autonomic Nervous System
Posted in Biomed World on March 19, 2008 | Leave a Comment »
You wake in the night. A noise? A light? An intruder? Instantly alert, heart pounding, ‘butterflies’ in your stomach, you are ready to attack, or to run — the classical ‘fight or flight’ reaction. Or think of a nastier scenario. You are walking in the woods and stumble across a bloody, disfigured human body … [...]
Reflexes
Posted in Biomed World on March 19, 2008 | Leave a Comment »
Reflexes are actions directed by the nervous system that do not require conscious direction or control. Reflexes are characterized as involuntary or voluntary. Reflexes designed to protect the body from injury are termed nociceptive reflexes. Such reflexes include the twitching or winking of the eye, coughing and sneezing to dislodge foreign bodies from the respiratory [...]
Jalan Terjal Menuju Sistem Siaran Berjaringan
Posted in Indonesian, Information & Technology on March 9, 2008 | 2 Comments »
(artikel ini telah dipublikasikan di www.beritaiptek.com)
Melalui siaran Persnya, Departemen Informasi dan Komunikasi telah mengundur batas waktu siaran berjaringan bagi stasiun TV swasta (nasional) selama 2 tahun, dari semestinya 28 Desember 2007 menjadi 28 Desember 2009. Ini berarti stasiun TV swasta yang mengudara secara nasional masih tetap dapat memancarluaskan siarannya secara sentral ke seluruh pelosok negeri. [...]
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- How the kidney maintains the osmotic gradient?
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