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"Martajasah is one of the villages in Bangkalan Region, Madura, which have difficuly of fresh water. This area has a lot of potential thar can be developed, particularly the potential of regious tourism. To increase the utilization potential of the region and support the public healthy, in 2007 PPGN-BATAN cooperated with the Government of bangkalan has made one (I) exploration/production groundwater-wells with the expectation it can meet a demand of fresh water in the Martajasah Village area. To determine the capacity of the wells, the maximum discharge pumping and the optimum discharge pumping from the wells pumping test it is necessary should be conducted, which includes step draw down pumping test, constant rate pumping test and recovery test. The purpose of this activity is to determine amount of well loss, loss of aquifer, well hydraulics equations and the value of the efficiency of wells to determine the optimum and maximum discharge wells and calculate the value of transmissivity/transmissivity (T) from the aquifer. The scope of these activities include the preparation of working equipment, testing of all equipment, measurement of static groundwater table, pumping test, and analysis of pumping test. Based on the result from step draw down test, well hydraulics equations obtained Sw= 0.0079 Q + 0.000003 Q2, so that according to the well hydraulics equations are then obtained a maximum pumping discharge (Qmax)= 3.9 liters/second (336.7 m3/days) with the well efficiency (E)= 89%, so the optimum pumping discharge (Qopt)= 3.455 liters/second= 298.52 m3/day. based on the result from constant rate pumping test and recovery test showed adequate transmissivity of wells, ie T= 136.5 m2/day=5.6875 m2/hour= 0.094 m2/minute."

"Tujuan: Untuk mengetahui apakah pemberian suplemen antioksidan dapat mengurangi pemanjangan waktu pemulihan makula pada juru las dengan pemakaian safety goggle. Design: Uji klinis tersamar ganda kelompok paralel secara randomisasi.Metode: 44 subyek dibagi menjadi.2 kelompok. Kelompok perlakuan 21 subyek mendapat suplemen vitamin C 50 mg, vitamin E 10 mg dan β-carotene 6 mg selama 2 minggu berturut-turut, sedangkan kelompok kontrol 23 subyek mendapat plasebo. Pengukuran WPM dilakukan sebelum dan sesudah suplementasi baik pada saat sebelum dan sesudah 5 menit bekerja menggunakan safety goggle.Hasil : Selisih WPM sebelum dan sesudah mendapat suplemen (WPM 2) pada kelompok perlakuan adalah 17,90±5,58 detik, sedangkan kelompok kontrol adalah 23,78±6,64 detik terdapat perbedaan bermakna secara statistik (3WPM 2) antara kedua kelompok penelitian (p<0,05).Kesimpulan : Pemberian suplemen vitamin C 50 mg, vitamin E 10 mg and β -carotene 6 mg selama 2 minggu berturut-turut pada juru las yang menggunakan safety goggle terbukti dapat mengurangi pemanjangan WPM.

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Objective: To evaluate whether assigning antioxidants supplement to welders using safety goggles could influence the prolong recovery time of photostress lest.

Methods: The study is randomized, double-blinded clinical trial. Forty-four male welders were included and divided into two groups and conduct matched pairs based on age and visual acuity. Twenty-one (21) welders for 5 minutes work assigned with antioxidants (subject group), while twenty-three (23) welders for the same duration assigned with placebo (control group) were given supplement for 14 days continuously. The antioxidants contained vitamin C 50 mg, vitamin E 10 mg and β-carotene 6 mg. The study was conducted at the Technical Institute of Welders in Surakarta from December 2004 through January 2005.

Results: The photostress recovery test in subject group produce an improvement (p< 0,05) while in placebo group remains unchanged (p>0,05).

Conclusion: Oral vitamin C 50 mg, vitamin E 10 mg and β -carotene 6 mg are proven to reduce the prolong time of photostress recovery test in welders using safety goggles."