Results 1 to 10 of about 1,997 (145)

Occupational exposure to BTEX and styrene in West Asian countries: a brief review of current state and limits [PDF]

open access: yesArhiv za Higijenu Rada i Toksikologiju, 2022
The aim of introducing occupational exposure limits (OELs) is to use them as a risk management tool in order to protect workers’ health and well-being against harmful agents at the workplace.
Rahimpoor Razzagh   +3 more
doaj   +2 more sources

Polimerik Linoleik Asit İçeren Graft Kopolimerlerin Atom Transfer Radikal Polimerizasyonu ve Kondenzasyon Reaksiyonu ile Sentezi ve Karakterizasyonu

open access: yesDüzce Üniversitesi Bilim ve Teknoloji Dergisi, 2021
Bu çalışmada, NPLina1-g-PCL-g-PSt üç bloklu graft kopolimerler Atom Transfer Radikal Polimerizasyonu (ATRP) ve kondenzasyon reaksiyonu kullanılarak bir basamakta tek kap (one-pot) yöntemiyle sentezlendi.
Sema Allı
doaj   +1 more source

Level of Airbone Toluene in Work Environment is Associated With Level of Urine Hippuric Acid in Printing Workers at Rungkut Surabaya

open access: yesJurnal Kesehatan Lingkungan, 2018
One of industrial hazards in printing can come from chemical elements. The chemicals that may be in the printing industry is toluene. Toluene used in 75% of printing work activity. The biggest toluen used as automatic cleaning.
Fardani Irmasari
doaj   +1 more source

OKSIDASI SENYAWA ORGANIK DENGAN RADIASI UV DAN HIDROGEN PEROKSIDA : TOLUEN DALAM LARUTAN (Oxidation of Organic Compounds with UV Radiation And Hydrogen Peroxide : Toluene in Aqueous Solutions)

open access: yesJurnal Manusia dan Lingkungan, 2007
ABSTRAK  Umumnya limbah cair mengandung bermacam-macam senyawa organik dan unorganik. Sebagian besar senybawa organik, diantaranya adalah senyawa-senyawa aromatis, seperti toluene, tidak dapat dikenakan proses kemis maupun biologis konvensional. Tulisan
I Made Bendiyasa   +2 more
doaj   +1 more source

Quasi-continuous measurements of hydrocarbon immissions

open access: yesMeteorologische Zeitschrift, 1994
Within the framework of the research programme titled "Air pollution and human health" the Lehrstuhl für Bioklimatologie und Immissionsforschung (LfBIM) is responsible for the subproject "Measurements of various hydrocarbons being precursors for ...
B. Rappenglück
doaj   +1 more source

Analisis Profil Minyak Atsiri Daun Kayu Putih (Melaleuca leucadendra L.) dan Produk di Pasaran

open access: yesJournal of Food and Pharmaceutical Sciences, 2022
Minyak kayu putih merupakan salah satu minyak atsiri yang biasa digunakan dalam sehari-hari. Produksi dalam negeri hanya dapat memproduksi minyak kayu putih 650 ton/tahun dari permintaan kebutuhan dalam negeri dalam setahun sebesar 3.500 ton sehingga ...
Nawwar Irfan   +4 more
doaj   +1 more source

Measurement of anthropogenic and biogenic hydrocarbons

open access: yesMeteorologische Zeitschrift, 1998
Ambient air concentrations of up to 12 different hydrocarbons were measured every hour at two locations south of Munich in summer 1996 using a GC system.
Peter Steil, Bernhard Luksch
doaj   +1 more source

Uji Aktivitas Senyawa Antioksidan dari Rumput Laut Halymenia harveyana dan Eucheuma cottonii

open access: yesJurnal Pascapanen dan Bioteknologi Kelautan dan Perikanan, 2006
Penelitian uji aktivitas senyawa antioksidan dari rumput laut Halymenia harveyanadan Eucheuma cottoniitelah dilakukan. Aktivitas antioksidan dan uji toksisitasnya diamati terhadap ekstrak kasar, fraksi n-heksana, dan fraksi metanol dari rumput laut segar
Theresia Dwi Suryaningrum   +2 more
doaj   +1 more source

Decapado del acero inoxidable AISI 316L utilizando una mezcla ecológica de H2O2-H2SO4-HF

open access: yesRevista de Metalurgia, 2005
En la presente investigación se estudia el decapado del acero inoxidable AISI 316L utilizando una mezcla de agua oxigenada (H2O2) y los ácidos sulfúrico (H2SO4) y fluorhídrico (HF) a pH 2,0.
L. Narváez   +3 more
doaj   +1 more source

PROSES KONVERSI MINYAK GORENG BEKAS MENJADI POLIOL SEBAGAI BAHAN BAKU BUSA POLIURETAN

open access: yesKovalen: Jurnal Riset Kimia, 2018
Minyak goreng bekas yang bersifat karsinogenik dan selama ini menjadi limbah yang  mencemari lingkungan berpotensi sebagai bahan baku pembuatan busa poliuretan yang bernilai ekonomis.
Estin Nofiyanti, Gatut Ari Wardani
doaj   +1 more source

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