paracetamol that is known as acetaminophen have the most consume as an analgesic and antipyreticdrug in the world. that is formulated in single compound or mixture at many forms such astablets, syrups, suspensions and drops. the last form is intravenous injections. paracetamol derivedfrom 4-minophenol which is synthesized by acylated the p-acetaminophenol and acetic anhydride.4-aminophenol is t...

5-Hydroxy-2-methylfurfural (HMF) has a high derivatization potential and is considered the sleeping giant of biobased platform chemicals. It accessible by acid hydrolysis various carbohydrate-containing feeds, preferably those in fructose content. We here report detailed study on use thick juice, an intermediate sucrose (SUC)-rich stream sugar factory, pure SUC for synthesis HMF batch reactor s...

the aim of this research was optimization of refining of raw sugarcane juice using bentonite for production of natural liquid sugar or cane honey. non-sugar substances of raw sugarcan juice contains: colorants, polysaccharides, gums, proteins, etc that affect on efficiency and quality of the final product and should remove from raw sugarcane juice. gelatin is a protein which is used as an aid c...

Biological significance of 11C-glucose purity has been a controversial matter. In order to understand the contribution of impurities contained in the photosynthetic 11C-glucose, its analysis and biodistribution in mice was studied. Studies indicated the interference of impurities, particularly 11C-fructose in the injectate, with the quantitative evaluation of glucose metabolic rate in brain. Fu...

The influence of several parameters on removal of various impurities during vacuum flotation clarification of mixed juice has been investigated, and possible ways of dealing with the secondary precipitate obtained in this clarification process have been examined. Dispersed a~ir flotation clarification is described and the experience gained with this separation technique is recorded. Introductio...

Abstract: Ore mineral characterization and various experimental testwork were carried out on Asian Abe-Garm dolomite, Qazvin province, Iran. The testwork consisted of calcining, chemical characterization, LOI determination, and reduction tests on the calcined dolomite (doloma), using Semnan ferrosilicon. Calcining of dolomite sample was carried out at about 1400 ºC in order to remove the contai...

Ruthenium-103 is the parent isotope of 103mRh (t1/2 56.1 min), an isotope of interest for Auger electron therapy. During the proton irradiation of thorium targets, large amounts of 103Ru are generated through proton induced fission. The development of a two part chemical separation process to isolate 103Ru in high yield and purity from a proton irradiated thorium matrix on an analytical scale i...

This application note illustrates the advanced analytical performance and robustness of the Agilent 7700s/7900 ICP-MS for the direct determination of metallic impurities in high purity concentrated hydrochloric acid (HCl). The 7700s/7900 incorporates an Octopole Reaction System (ORS), which effectively removes polyatomic interferences, allowing ultimate detection limits to be achieved for eleme...

Synthetic DNAand RNA-based oligonucleotides are among many successful biotherapeutic drugs to treat many different kinds of illnesses. They are synthesized in a multistep process. Although coupling efficiencies are high, the overall yield of oligos decreases as the number of cycles increases, with failure in coupling with single (N-1) and double (N-2) deletions as the major impurities. To ensur...