Pemeriksaan bilirubin total merupakan salah satu pemeriksaan kimia klinik yang membutuhkan penanganan spesimen baik. Faktor dapat mempengaruhi hasil adalah cahaya, suhu penyimpanan dan waktu penyimpanan. Oleh karena itu harus segera dilakukan. menggunakan sampel plasma EDTA, dengan dikerjakan, dibandingkan serum, dibekukan terlebih dahulu selama 30 menit selanjutnya diperiksa sehingga mudah ter...

Malaprade’ introduced periodic acid for the purpose of dissociating the carbon chain of polyhydric glycols. Criegee,2 a few years later, introduced lead tetraacetate-which generally acts similarly to periodic acid-as an oxidant, particularly for the purpose of recognizing the presence of two adjacent terminal hydroxyl groups in glycosides. Fleury and Lange,” at the same time, recognized that pe...

An improved synthesis of 24-13C-labeled bile acids has been achieved using formyl derivatives of bile acids and a modified lead tetraacetate procedure. The formylated bile acides were degraded by lead tetraacetate and lithium chloride to formylated 23-chloronorcholanes in 72-83% yield. Formylated 23-chloronorcholanes were converted to nitriles in dimethylformamide, which were then hydrolyzed to...

Reactions of the tetraphosphine ligand N,N,N',N'-tetra(diphenylphosphanylmethyl)ethylene diamine) (dppeda) or 1,4-N,N,N',N'-tetra(diphenylphosphanylmethyl)benzene diamine (dpppda) with NiCl2, ancillary ligand (C2H5)2NCS2Na (Na(dtc)) and NH4PF6 afforded two binuclear complexes [(dtc)Ni(dppeda)Ni(dtc)](PF6)2 (1) and [(dtc)Ni(dpppda)Ni(dtc)](PF6)2 (2). Compounds 1 and 2 were characterized by eleme...

In several vegetable species a relationship between the metabolism of active oxygen species and breakage of dormancy has been established. However, scarce information is available on the role of oxidative stress in potato tubers. The purpose of this investigation is to study the effect of CAT genetic modification on the dormancy break of potato tubers. A transgenic approach with partial repress...

As is well known, L-ascorbic acid (AA) is catalytically oxidized in the presence of Cu". It is also known that acidic chelating agents, such as EDTA, have an inhibitory effect on this oxidation reaction, whereas basic chelating agents, such as ethylene diamine (EDA) , have an accelerating effect. Both the inhibition and the acceleration are considered to be due to chelation with Cu-" . The auth...

Vibrational circular dichroism (VCD) spectroscopy is a powerful tool to characterize absolute configurations and conformations of chiral organometallic systems. Such characterizations rely on the corresponding density functional theory (DFT) spectral simulations which may become very time consuming and sometimes even impossible for systems with increasing complexity. Systematic studies on small...

A chelating agent helps crops to reuse as nutrients by mobilizing salts from the soil. This study was conducted evaluate effects of Diethylenetriamine pentaacetic acid (DTPA), N-(2-hydroxyethyl)-ethylene diaminetriacetic (HEDTA), and Ethylene diamine disuccininc (EDDS) for improving plant growth reusing accumulated in soils plastic film house. Two experiments were carried out follows: i) For in...