Carbon-14

to be less active than using Cisplatin for K562 (leukemia) cells during a 24 h treatment. [29] Other research conducted in the same year found another Bi(III) compound, 2-acetylpyridine, N (4)-pyridyl thiosemicarbazone (HL), [Bi(HL)(NO3)3], (figure 14 below) also possessed anticancer properties against many cell lines, including K562 (leukemia) and HeLa (cervical) lines. In contrast to his findings with the [Bi(L)(NO3)2(CH3OH)] complex, the 2-acetylpyridine, N (4)-pyridyl thiosemicarbazone…

TEE JIN FENG 15SPE072X 27012016 EXPERIMENT 7: Cannizzaro reaction and reaction of benzaldehyde with ethylene glycol Introduction: From the first experiment, the reaction of benzaldehyde and potassium hydroxide will produce two products which are benzyl alcohol and benzoic acid. We are going to look at how to get this two products separated by using their different chemical properties. For the second experiment, benzaldehyde ethylene acetal is formed when the reaction done under acidic…

1. INTRODUCTION Thiosemicarbazone is a derivative of imine which is formed when an aldehyde/ketone reacts with a thiosemicarbzide through a condensation reaction. The presence of the hetero atoms like Sulphur and Nitrogen makes these derivatives biologically active. Lately, great emphasis is laid on the synthesis and development of these derivatives reason being the wide variety of pharmacological activities exhibited by them. So far, thiosemicarbazones have been shown to exhibit analgesic and…

Abstract A Friedal-Craft reaction was performed to synthesize 1,4-di-t-butyl-2,5-dimethoxy-benzene from p-dimethoxybenzene and t-butyl alcohol. The product of the reaction was filtered using a Hirsch funnel, before recrystallizing and filtering a second time. The recorded mass of the product was .08g and the melting point was 47-52.7 °C. Introduction1 This experiment was designed to practice working with electrophilic aromatic substitution reactions. Specifically, a Friedel-Craft reaction was…

How Carbon Sources Affect Biofilm Growth Yeast is single celled and eukaryotic. Biofilms of bacteria can adhere to a device and allow them to withstand environmental changes, which prevents antibiotics from penetrating the cells to kill them. When shifting from a planktonic state to a biofilm, the cells change its proteins. Biofilms produce FLO genes, which code for glycoproteins, cause the yeast to stick together. This is what helps the biofilm form. Once it is forms, the species within the…

CHEMISTRY ASSIGNMENT STUDENT NAME : SYED HAMMAD AHMED CLASS : F.E MECHANICAL ENGINEERING SECTION C TEACHER'S NAME : MISS HIRA SULTAN DATE : Table of Contents Serial No. Topics Page No. 1 Corrosion 3 2 Electrochemical Theory of Corrosion 3 3 Types of Electrochemical Theory of Corrosion 4  Oxygen Absorption 4  Hydrogen Evolution 5  Galvanic Corrosion 6-7  Concentration Cell Corrosion 8-10 4 References 10 Corrosion Corrosion is the…

Granite is widely known as the hardest building stone in the world. So, just why is this reliable material so strong? Today, the stone countertop experts at Rocky Mountain Granite & Marble in Webster, NY, explain what you need to know: A Sturdy Composition Granite is created when molten rock solidifies under the earth’s crust. Composed of Quartz, Mica, Feldspar, and other strong minerals, it’s only natural the product is so sturdy. In fact, quartz and feldspar are tougher than steel. The only…

boiling point increase when the addition of an extra carbon atom in a straight-chain homologous series of saturated alcohols occurs?” On average, as per calculations conducted, the boiling point increases by a magnitude of approximately 14.1 ℃. Granted such quantitative evidence, in addition to its corresponding visual plotting detailed in figure 2.1, it could reasonably be determined that a quite linear correlation indeed exists between carbon-chain length and boiling…

According to Encyclopedia Britannica in Britannica School the word tungsten comes from the mineral scheelite which was once called tungsten, which means heavy stone. The name comes from the Swedish chemist and his countrymen who discovered the metal in scheelite. The atomic number of tungsten is 74 and tungsten’s atomic weight is 183.84. Tungsten is also one of the densest and hardest metals in the world. From Encyclopedia Britannica in Britannica School, tungsten was discovered by a Swedish…

As a leading industrial seals distributor, Valley Seal provides Parker and Coorstek engineered sealing products. We at Valley Seal ensure a stock of the widest range of seals for customers to choose from. These include simple O-rings, rods wipers and scrapers, back-up rings, and custom molded rubber products. We also provide uniquely designed seals and fasteners from Parker. These sealing products will be discussed in this post. Three Uniquely Designed Parker Seals The seals and fastener…