نتایج جستجو برای: bio compounds chemicals
تعداد نتایج: 314312 فیلتر نتایج به سال:
Value-added compounds were obtained from pine wood bio-oil, converting it into a renewable source for several chemicals: acids (acetic acid), sugars (levoglucosan), furan derivatives (furfural) and phenolics (catechol, phenol, 4-propylguaiacol, vanillin). To achieve this, firstly comparison of direct pyrolysis at 500 °C versus two-staged (300 °C) was made. It determined that ensue in the obtain...
All the experiments in the paper were conducted using these materials : CdO (99.999%, Strem Chemicals, MA, USA), Se (99.999%, Alfa-Aesar, MA, USA), trioctylphosphine (TOP; 97%, SigmaAldrich, Israel), trioctylphosphine oxide (TOPO; 99%, Sigma-Aldrich, Israel), octadecylphosphonic acid (ODPA; 99%, Polycarbon Industries, MA, USA), S (99.98%, Sigma-Aldrich, Israel), oleic acid (90%, Alfa-Aesar, MA,...
Abstract In this study, physicochemical properties, co-pyrolysis kinetics and characteristics of lignite rapeseed cake is investigated. While has high calorific value, volatile matter content low moisture that suitable for the pyrolysis reactions. According to thermal behavior blends, addition into provides shift lower initial decomposition temperature blends compared lignite. a significant rol...
Introduction Conclusions References
Breath Research Institute of the University of Innsbruck, Rathausplatz 4, A-‐6850 Dornbirn, Austria Vorarlberg University of Applied Sciences, Hochschulstr. 1, A-‐6850 Dornbirn, Austria Faculty of Mathematics, University of Vienna, Oskar-‐Morgenstern-‐Platz 1, 1090 Wien, Austria Univ.-‐Clinic for Anesthesia and Intensive Care, Innsbruck Medical University, Anichstr, 35, A-‐6020 Innsbruck,...
Plants have evolved a plethora of different chemical defenses covering nearly all classes of (secondary) metabolites that represent a major barrier to herbivory: Some are constitutive; others are induced after attack. Many compounds act directly on the herbivore, whereas others act indirectly via the attraction of organisms from other trophic levels that, in turn, protect the plant. An enormous...
Introduction Conclusions References
As diverse environmental changes continue to influence the structure and function of plant-pollinator interactions across spatial and temporal scales, we will need to enlist numerous approaches to understand these changes. Quantitative examination of floral volatile organic compounds (VOCs) is one approach that is gaining popularity, and recent work suggests that floral VOCs hold substantial pr...
The assessment of indoor air volatile organic compounds (VOCs) concentration levels in dental settings has a big health relevance for the potentially massive occupational exposure to a lot of diverse contaminants. The comparison of the VOCs profile relative to indoor conditions and to the corresponding outdoor concentrations, as well as the discovery of possible correlations between specific de...
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