Judul: Aplikasi dolomit, bahan organik dan pupuk npk pada tanah dicemari Zn: keterkaitan antara sifat kimia tanah dan ketersediaan Zn dengan bobot kering tomat
Abstrak: Urban arable land located near industrial area are vulnerable to heavy metal pollution. One of these heavy metals of concerned is zinc (Zn). In situ inactivation is a prospective remediation methods to be applied on heavy metal polluted-soil of arable land. This technique refers to the use of ameliorants and fertilizers to alter the chen~ical forms of heavy metal pollutants in the environment, thereby decreasing their chemical and biological ability to cause harm. This research was aimed at to evaluate: (1) the effects of amelioration and fertilization at 4 (four) soil Zn-enrichment series on soil chemical properties, the concentration of Zn-bioavailable fraction and dry matter yield of the test plant, and (2) the relationships between soil. chemical properties, concentration of soil Zn-bioavailable fraction and dry matter yield of the test plant. The test plant used in this research was low altitude-dryland tomato. The concentration of soil Znbioavailable fraction was extracted with NH40Ac-EDTA pH 4.65.
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Judul: Aplikasi teknik inaktivasi in situ pada tanah dicemari Zn: Keterkaitan antara konsentrasi Zn pada tajuk tomat dengan sifat-sifat kimia tanah
Abstrak: Urban arable land located near industrial area are vulnerable to heavy metal pollution. One of these heavy metals of concerned is zinc (Zn). In situ inactivation is a prospective remediation methods to be applied on heavy metal polluted-soil of arable land. This technique refers to the use of ameliorants and fertilizers to alter the chemical forms of heavy metal pollutants in the environment, thereby decreasing their chemical and biological ability to cause harm. In the preceding study, it was evaluated: (1) the effects of amelioration and fertilization at 4 (four) soil Zn enrichment series on the soil chemical properties, including the concentration of bioavailable soil Zn, and the dry matter yield of tomato, and (2) the relationships between the soil chemical properties and the tomato dry matter yield. The present study was aimed at to evaluate: (1) the effects of the same amelioration and fertilization treatment at 4 (four) Zn emiched soil series on Zn, N, P, S, K, Ca and Mg concentration in tomato shoot, (2) the relationships between Zn concentration in tomato shoot with soil chemical properties, including the total and bioavailable soil Zn, and (3) the relationships between Zn with N, P, S, K, Ca and Mg concentration in tomato shoot.
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Judul: Karakteristik Anatomi Skelet Kepala Buaya senyulong (Tomistoma schlegelii).
Abstrak: Buaya sepit atau senyulong (Tomistoma schlegelii) merupakan jenis buaya asli Indonesia yang berhabitat di sungai-sungai Sumatera, Kalimantan, dan juga pedalaman Sulawesi. Salah satu ciri khas buaya senyulong adalah bentuk moncong yang runcing dan sempit, namun hingga saat ini informasi mengenai struktur skelet kepala buaya senyulong sangat terbatas. Penelitian ini bertujuan untuk mempelajari karakteristik anatomi skelet kepala buaya senyulong yang dikatikan dengan fungsi dan perilakunya. Penelitian dilakukan secara eksploratif dengan melakukan pengamatan, pencatatan, dan pengambilan gambar dari skelet kepala buaya senyulong. Skelet kepala berukuran panjang 70 cm, lebar 29 cm, dan tingggi 17 cm dengan permukaan kasar pada os nasale, os frontale, os maxilla, os mandibula, os lacrimale, os jugale. Jumlah gigi pada buaya ini sebanyak 78 buah, terdiri dari 4 buah gigi premaxila, 16 buah gigi maxila, dan 19 buah gigi mandibula. Pada regio orbitalis ditemukan dua pasang fenestrae temporales yang berkembang baik. Fenestra supratemporale merupakan lubang oval yang membentang di sepanjang os parietale. Fenestra infratemporale berbentuk segitiga dan dibatasi oleh os squamosum, os postorbitale, os jugulare, dan os quadratum. Os mandibula hewan ini mempunyai symphysis mandibularis yang panjang yaitu garis yang melintang di corpus mandibulae. Secara fungsional ukuran symphysis mandibularis berkaitan dengan adaptasi hewan terhadap diet makan.
Keyword: kepala, moncong, Tomistoma schlegelii