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At the turn of the twentieth century the theoretical underpinnings of chemistry were finally understood due to a series of remarkable discoveries that succeeded in probing and discovering the very nature of the internal structure of atoms. In 1897, J.J. Thomson of the University of Cambridge discovered the electron and soon after the French scientist Becquerel as well as the couple Pierre and Marie Curie investigated the phenomenon of radioactivity. In a series of pioneering scattering experiments Ernest Rutherford at the University of Manchester discovered the internal structure of the atom and the existence of the proton, classified and explained the different types of radioactivity and successfully transmuted the first element by bombarding nitrogen with alpha particles.
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Abbreviations. Acronyms and abbreviations that are not broadly familiar to readers in all disciplines of chemistry should be introduced in parentheses following the full term on its first appearance in the text. Do not include a separate Abbreviations list.
Authors must emphasize any unexpected, new, and/or significant hazards or risks associated with the reported work. This information should be in the Experimental Section of a full article and included in the main text of a letter. Statement examples can be found in the Safety Statement Style Sheet and additional information on communicating safety information from the ACS Guide to Scholarly Communication is freely available here.
Abstract:Jojoba is a widely used medicinal plant that is cultivated worldwide. Its seeds and oil have a long history of use in folklore to treat various ailments, such as skin and scalp disorders, superficial wounds, sore throat, obesity, and cancer; for improvement of liver functions, enhancement of immunity, and promotion of hair growth. Extensive studies on Jojoba oil showed a wide range of pharmacological applications, including antioxidant, anti-acne and antipsoriasis, anti-inflammatory, antifungal, antipyretic, analgesic, antimicrobial, and anti-hyperglycemia activities. In addition, Jojoba oil is widely used in the pharmaceutical industry, especially in cosmetics for topical, transdermal, and parenteral preparations. Jojoba oil also holds value in the industry as an anti-rodent, insecticides, lubricant, surfactant, and a source for the production of bioenergy. Jojoba oil is considered among the top-ranked oils due to its wax, which constitutes about 98% (mainly wax esters, few free fatty acids, alcohols, and hydrocarbons). In addition, sterols and vitamins with few triglyceride esters, flavonoids, phenolic and cyanogenic compounds are also present. The present review represents an updated literature survey about the chemical composition of jojoba oil, its physical properties, pharmacological activities, pharmaceutical and industrial applications, and toxicity.Keywords: jojoba; Simmondsia; chemistry; liquid wax; biology; toxicity; pharmaceutical/industrial uses
To increase the filling power of tobacco, manufacturers developed processes to impregnate shredded tobacco with volatile materials and then rapidly remove them to expand the cellular structure of the leaf, thereby reducing the density of the tobacco filler. The expanded tobacco was shown to have a high burn rate and irritating smoke (Browne 1990). The reduced cigarette weight, increased filling power, and increased burn rate reduced the number of puffs, which, in turn, reduced delivery of tar and nicotine (Abdallah 2003a). Expanded tobacco is included in commercial cigarettes, and the amount of expanded tobacco as a percentage of the tobacco mass increases from approximately 15 percent in full-flavored cigarettes to 50 percent in ultralight brands (Theophilus et al. 2004). Other scientists reported that concentrations of most chemicals measured in the smoke of cigarettes with puffed, expanded, or freeze-dried tobacco were significantly reduced compared with those in control cigarettes (Hoffmann et al. 2001).
Pre-submission inquiries Authors considering submission to JBC who are unsure about the fit of their work to the scope of the journal can feel free to contact the editorial team. Messages should include a few sentences describing the overall scientific question, the approach(es) taken, and the general conclusions drawn. If an abstract is available, please include it within the message text. Please note, however, that the editors cannot provide detailed feedback about a manuscript or make any commitments regarding its publication at this stage; any decisions on acceptance requires full review
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