Hasil Pencarian  ::  Simpan CSV :: Kembali

"During a century, from the Van der Waals mean field description (1874) of gases to the introduction of renormalization group (RG techniques 1970), thermodynamics and statistical physics were just unable to account for the incredible universality which was observed in numerous critical phenomena. The great success of RG techniques is not only to solve perfectly this challenge of critical behaviour in thermal transitions but to introduce extremely useful tools in a wide field of daily situations where a system exhibits scale invariance. The introduction of scaling, scale invariance and universality concepts has been a significant turn in modern physics and more generally in natural sciences. Since then, a new "physics of scaling laws and critical exponents", rooted in scaling approaches, allows quantitative descriptions of numerous phenomena, ranging from phase transitions to earthquakes, polymer conformations, heartbeat rhythm, diffusion, interface growth and roughening, DNA sequence, dynamical systems, chaos and turbulence. The chapters are jointly written by an experimentalist and a theorist. This book aims at a pedagogical overview, offering to the students and researchers a thorough conceptual background and a simple account of a wide range of applications. It presents a complete tour of both the formal advances and experimental results associated with the notion of scaling, in physics, chemistry and biology."

"Penelitian pada 2 lokasi di area PT Antam (Persero) Tbk UBPP Logam Mulia yang terdiri atas area Peleburan dan Pemurnian Perak menunjukkan indeks WBGT indoor antara 29.8℃ sampai dengan 32,25℃. Setelah dilakukan analisis indeks WBGT, beban kerja dan pola kerja berdasarkan Permenaker No. 13 Tahun 2011, didapatkan hasil bahwa dari 23 responden yang menjadi subyek penelitian, 22 responden (95,7%) termasuk kelompok berisiko mengalami pajanan tekanan panas. Seluruh responden (100%) merasakan temperatur lingkungan tempat mereka bekerja panas serta 70% responden merasa tidak nyaman (terganggu) dengan kondisi tersebut. Seluruh responden yang menjadi subyek penelitian pernah mengalami keluhan akibat pajanan tekanan panas tetapi dengan frekuensi yang berbeda-beda. Berdasarkan keluhan-keluhan yang dirasakan responden didapatkan bahwa 78,3 % responden mengalami gejala Heat Exhaustion, 17,4% responden mengalami gejala Heat Cramps, dan 4,3% Responden mengalami Heat Rash. Dan jenis keluhan yang sangat sering (setiap hari) dirasakan pekerja adalah banyak mengeluarkan keringat (78,3%) dan merasa cepat haus (69,6%), sedangkan jenis keluhan yang hampir tidak pernah dirasakan oleh pekerja adalah merasa ingin pingsan (78,3%).

---

Research on 2 location at PT Antam (Persero) Tbk UBPP Precious Metal consisting of Smelting Area and Silver Refining Area show WGBT index indoor 29.8℃ until 32,25℃. After WGBT index analysis, workloads and work pattern based on Permenaker No. 13 Tahun 2011, from 23 respondents who become subject of this research showed result 22 respondents (95,7%) belong to group which have a risk to get heat pressure exposure. All respondents (100%) feel temperatures on their work environment so hot and 70% respondents feel not uncomfortable (annoyed) with that condition. All respondent on this research had complaints due to heat pressure exposure with different frequency.

Based on respondents complains show that 78,3 % respondents get symptom Heat Exhaustion, 17,4% respondents get symptom Heat Cramps, and 4,3% respondents get symptom Heat Rash. The most complaint (everyday) felt by worker are worker always sweating (78,3%) and get thirsty easily (69,6%), other complaints which almost never felt by worker is faint (78,3%)."

"ABSTRAKTujuan dari penelitian ini adalah melakukan penilaian terhadap pajanan tekanan panasdi workshop pembuatan batik yang terletak di Kecamatan Mauk, Tangerang.Sebanyak 84% dari pekerja yang diwawancarai mengeluh tentang suhu lingkungankerja yang dirasa terlalu panas, meskipun dalam hal ini sudah terdapat pengendalianterhadap tekanan panas yang terpasang pada bangunan. Penilaian didasarkan pada tigakriteria menurut Worksafe BC 2007, yakni faktor lingkungan, faktor pekerja, danfaktor pekerjaan. Hasil penelitian menunjukkan bahwa Indeks Suhu Basah dan Bola(ISBB) di luar ruangan (outdoor) lebih tinggi dibanding ISBB di dalam ruangan(indoor) dan indeks panas berada pada area berbahaya dengan level risiko tinggi.Hasil observasi faktor pekerja yang meliputi aklimatisasi, status hidrasi dan pakaiankerja tidak menunjukkan adanya upaya pengendalian yang dilakukan. Demikian jugahasil observasi pada faktor pekerjaan yakni beban kerja dan pola kerja tidakmenunjukkan adanya pengendalian administratif yang diupayakan dalam menanganikeluhan terhadap pajanan tekanan panas ini. Penurunan tingkat risiko pajanan tekananpanas diharapkan dapat dilakukan dengan modifikasi pengendalian teknis,mengupayakan pengendalian administratif serta penggunaan pakaian kerja yangsesuai dengan lingkungan kerja dengan pajanan tekanan panas

---

ABSTRACTThe aim of this study was to make an assessment of the heat stress exposure in a BatikWorkshop located at Kecamatan Mauk, Tangerang. 84% of interviewed workerscomplained about the working environment temperature that tends to be very hot,although the building already has a built-up control to heat stress. The assessment isbased on three criteria by Worksafe BC 2007 that is environmental, worker, and workfactors. The result showed that the Wet Bulb Globe Temperature (WBGT) outdoorhigher than indoor, and the heat index is at dangerous area with a high risk level.Observation on worker (acclimatization, hydratin and clothing) and work (work loadand work rate) factors did not show any control measures undertaken. The level ofrisk can be reduced by modification of engineering control, administrative control andthe proper personal protective equipment (clothing)."