Judul: Model penyebaran kebisingan dan pengaruhnya terhadap pekerja. Studi kasus: PT. Wira Penta Kencana,  Kepulauan Riau
Abstrak: This research aims to determine sources and levels of noise; to develop in modelling; analyzing noise propagation, studying the impact of noise level to the employees; and to determine a set of proper noise control through working system and arrangement of noise source strategy
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Judul: Kajian Dampak Kebisingan (Dalam Lingkungan Pabrik) Terhadap Penurunan Tingkat Pendengaran Karyawan Di Kawasan Industri Kota Tangerang
Abstrak: Penurunan tingkat pendengaran adalah salah satu dampak negatif pencemaran lingkungan sebagai akibat dari intensitas suara dari mesin modern selama proses produksi. Kota Tangerang merupakan salah satu kawasan industri di Indonesia yang berpeluang menimbulkan pencemaran udara. Tujuan penelitian adalah mengukur tingkat kebisingan indoor dan mengidentifikasi tingkat gangguan pendengaran para karyawan, mengkaji variabel paling dominan yang berpengaruh pada penurunan tingkat pendengaran para karyawan, dan mengkaji bentuk keterkaitan antara kebisingan dan penurunan tingkat pendengaran. Variable eksternal yang berpengaruh pada penurunan tingkat pendengaran pada penelitian ini adalah umur, masa kerja, riwayat penyakit yang berhubungan dengan pendengaran (otitis media, hypertensi, trauma capitis, TBC, dan diabetes melitus), dan kebisingan tempat tinggal. Penelitian dilakukan pada Bulan April sampai dengan Mei 2006 di Kawasan Industri Kota Tangerang. Penelitian dilakukan dengan menggunakan metode observasi (expost facto) dengan pendekatan cross sectional. Industri terpilih dalam penelitian ini sebanyak 30 industri yang terdiri atas 8 industri pangan, 6 industri baja, 5 industri kayu/furniture, 3 industri kulit/sepatu, 4 industri tekstil, dan 4 industri plastik, dengan jumlah responden 300 orang. Berdasarkan hasil penelitian kebisingan tempat kerja yang melebihi nilai ambang batas yang ditetapkan (85 db) adalah industri baja mencapai 96,02 db, industri tekstil mencapai 88,13 db, dan industri kayu/furniture mencapai 88,12 db. Faktor dominan utama yang berpengaruh pada penurunan tingkat pendengaran karyawan adalah kebisingan tempat tinggal, penyakit, umur (industri pangan), masa kerja (industri baja dan kayu/furniture), kebisingan tempat tinggal dan penyakit (industri kulit/sepatu), umur (industri tekstil), dan penyakit (industri plastik). Berdasarkan hasil analisis spearman correlation, penurunan tingkat pendengaran karyawan berkorelasi positif nyata dengan umur, masa kerja, penggunaan alat pelindung telinga dan riwayat penyakit yang berhubungan dengan pendengaran karyawan (otitis media, hypertensi, trauma capitis, TBC, dan diabetes melitus).
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Judul: Drought Stress Tolerance Mechanisms of Eggplant (Solanum spp.): Physiology and Molecular.
Abstrak: Eggplant (Solanum melongena L.) is a popular and economically important vegetable crop grown in the tropics and subtropics, especially in Asia and Africa. Most of these crops grown in Asia and Africa are tolerant to biotic and abiotic stresses. Eggplant has a wide variation in morphological and physiological characteristics, therefore, it is necessary to explore the germplasm to gain more genotypes tolerant to biotic and abiotic stresses. Sufficient water availability at the first stage of plant growth is very important. Limited water supply may lead to drought stress. The long period of drought stress may disturb the metabolic process and lead the irreversible damage of the plant tissues, so the plant can not recover. This abiotic stress has been significantly proved to be one of factors decreasing the plant growth and productivity. The objective of this research was to reveal physiological and molecular response of six eggplant accessions (i.e. 098, 155, 414, 754, 772, and 827 accessions, and Panjalu-F1 as the control genotype) to drought stress. Plants were grown in medium containing soil, sand and compost (1:1:1, v/v/v) in the greenhouse. Plants were exposed to the drought treatment at 21 days after the plants have 6 fully leaves. Some parameters were examined during the drought treatment, which were media water content (MWC), relative water content (RWC), plant growth and dry weight, proline concentration, chlorophyll content and polyamine concentration. Total RNA was extracted from leaves on day 21st of the treatment. The arginine decarboxylase S. melongena (SmADC) fragment gene was amplified from the cDNA. ADC gene is one of genes involved in polyamine biosynthesis and plays important role in the plant tolerance mechanism to drought stress. The results showed that drought stress significantly reduced plant height, leaf area, stomatal density and aperture in all plants. Levels of chlorophylls were similar during the drought treatment in all plants. Proline and/or polyamines were accumulated and reached the maximum levels after 14 to 21 days after the treatment. High levels of these amines can be used to indicate that the plant is stressed by drought. Levels of proline and polyamines, especially putrescine, increased 10 times higher in the stressed-plants compared to those grown in the optimum condition. cDNA was synthesized from the total RNA by reverse transcription. In total, four fragments of SmADC were obtained by PCR from cDNA of accession 098 (2 fragments), cDNA of accession 772 (1 fragment) and genomic DNA of accession 098 (1 fragment). ADC primers were designed based on the conserved regions in ADC Solanum lycopersicum (accession number HM629957.1). Sequences analysis showed that the four SmADC fragments were 1 442 bp, 1 422 bp, 1 407 bp and 636 bp, encoding 151, 357, 466, 182 amino acids, respectively. Nucleotide alignment analysis showed that four SmADC fragments were 86-93 % homologue to Solanum lycopersicum (Acc: NM_001247720.1), Datura stramonium (Acc: AJ251898.1), Capsicum annuum (Acc: AY156514.1) and Nicotiana tabacum (Acc: AF321137.1). Based on the phylogenetic tree developed from the deduced amino acid sequence of ADC, SmADCs were grouped with Solanum lycopersicum, Datura stramonium, Capsicum annuum and Nicotiana tabacum. Analysis of conserved domains revealed that
Keyword: eggplant, proline, polyamine, arginine decarboxylase (ADC), pyridoxal 5-phosphate (PLP)