Fatty Acids

Brondz, I.

doi:10.1016/b978-0-12-409547-2.13780-1

Cited by 6 publications

(5 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They have a relatively poor content of metal, sulfur, nitrogen, and halogen atoms as part of their molecules. However, several rare lipids from terrestrial plants have fluoride in their molecules and some newly discovered lipids from marine organisms have bromine in their molecules [21], [22]. In molecules of both terrestrial and marine organisms do we find sulfur, nitrogen, and phosphorous.…”

Section: Petroleummentioning

confidence: 91%

To Be or Not to Be …? Part III: Diesel versus Electrically Powered Cars

Brondz¹

2018

View full text Add to dashboard Cite

X5 and 335d model diesel cars built by Bayerische Motoren Werke Aktiengesellschaft (BMW AG) between 2009 and 2011 were sued in a USA court in New Jersey for creating more pollution on the roads than in laboratory tests. BMW AG used testing methods similar to those admitted to by Volkswagen AG for cheating authorities (https://www.bloomberg.com/news/articles/2018-03-27/bmw-sued-for-install ing-defeat-devices-in-us diesel cars) [1]. Other manufacturers of diesel driven cars, for example, Ford Motor Co., Mercedes-Benz, Fiat Chrysler Automobiles NV, General Motors Co., and Volkswagen, have also produced diesel driven cars with higher levels of environmental pollution caused by sulfur oxides and NOx in exhaust gasses than is permissible. These companies have also met with similar problems and legal accusations. Was all this only the fault of the diesel car manufacturers, or was it perhaps a well-prepared attempt to discredit the diesel cars as they are or maybe the diesel motor as it is? Was it an attempt to favor the electric driven cars by undermining the manufacturers of diesel driving cars, and even possibly by undermining all manufacturers of cars driven by internal combustion engines (ICEs)? Diesel driven vehicles as a type of motor driven means are very powerful and economical and can be environmentally cleaner than other motor driven media, including electrically driven vehicles, if the total pollution produced by such vehicles is taken into account. The total manufacturing pollution from motor driven means, the handling, and the production of the driving force (e.g., benzene, kerosene, gasoline, diesel, and electricity) should all be taken into account. The environmental safety of the utilization of motor driven means and parts thereof after such vehicles have been decommissioned is also a very important consideration. The health hazards and environmental safety associated with the production, handling, and decommissioning must be considered as significant factors in the ranking of motor driven vehicles as a contributor to environmental pollution and health hazards.

show abstract

Section: Petroleummentioning

confidence: 91%

To Be or Not to Be …? Part III: Diesel versus Electrically Powered Cars

Brondz¹

2018

View full text Add to dashboard Cite

show abstract

“…Dietary fatty acids were classified in three ways—Classifications 1, 2, and 3—based on published definitions of short, medium, and long chains, as well as degree of saturation (see Table 1 ). 10 , 11 In addition, given the higher prevalence of certain fatty acids and fatty acid groups in the human diet, desired comparisons of PUFAs with LC saturated FAs, and the goodness of the nutrient data base, we evaluated certain fatty acids or groups of fatty acids individually. These included: total saturated fats, total PUFAs, total monounsaturated fatty acids, total omega-3 and omega-6 fatty acids, two omega-3 fatty acids, EPA (20:5), and DHA (22:5); the monounsaturated fat, oleic acid (18:1); and two long-chain saturated fatty acids, palmitate (16:0) and stearate (18:0).…”

Section: Methodsmentioning

confidence: 99%

“…Dietary fat, one macronutrient of three in the human diet, is comprised of several very different molecules, primarily cholesterol and other sterols, fatty acids, and triglycerides (glycerol + fatty acids) 10 . Dietary fatty acids (carboxylic aliphatic acids with the general formula H(CH 2 )nCOOH), have been of utmost interest because of their chemical and functional diversity 11 . Fatty acids differ in chain length (number of carbons) and degree of saturation or hydrogenation (number of double bonds).…”

Section: Introductionmentioning

confidence: 99%

“…10 Dietary fatty acids (carboxylic aliphatic acids with the general formula H(CH 2 )nCOOH), have been of utmost interest because of their chemical and functional diversity. 11 Fatty acids differ in chain length (number of carbons) and degree of saturation or hydrogenation (number of double bonds). These characteristics contribute to distinct chemical properties, biological functionality, and physiological roles.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dietary fatty acids and risk of Alzheimer's disease and related dementias: Observations from the Washington Heights‐Hamilton Heights‐Inwood Columbia Aging Project (WHICAP)

Gustafson

Bäckman

Scarmeas

et al. 2020

Alzheimer's & Dementia

View full text Add to dashboard Cite

Introduction: High dietary intake of long chain, polyunsaturated fatty acids is associated with lower Alzheimer's disease (AD) risk. Methods: Washington Heights-Hamilton Heights-Inwood Columbia Aging Project is a multiethnic, prospective observational study of aging and dementia among elderly (≥ 65 years). Dietary intake was measured using a food frequency questionnaire. Dietary short-, medium-, and long-chain fatty acid intakes were categorized by number of carbons and double bonds. Consensus AD diagnoses were made. Associations between AD risk and dietary fatty acid and cholesterol intakes were estimated using multivariable Cox proportional hazards regression models. Results: Of 2612 multiethnic women (67%) and men (baseline age 76.3 [6.4] years), 380 developed AD over an average 4.5 years follow-up. Lower risk of AD was associated with increasing intakes of docosahexaenoic acid (DHA; hazard ratio [HR] = 0.73, 95% confidence interval [CI]: 0.57 to 0.95, P = 0.018) and eicosapentaenoic acid (EPA; HR = 0.74, 95% CI: 0.57 to 0.95, P = 0.021), and longer AD-free survival (P < 0.05).

show abstract

“…In a previous study, when the gas sensitivity of self-assembled molecules with different chemistry of the tails was compared among nine different types, the hydrocarbon CH 2 group tales exhibited the second highest gas absorption properties [ 27 ]. As is known [ 28 ], stearic acid is in the same homologous series as arachidic acid, which differs from it in the number of carbon atoms in the hydrophobic part; additionally, chloroform is a good solvent for it. This result allows us to assume that Langmuir-Blodgett films based on it will be as sensitive to chloroform as films with arachidic acid.…”

Section: Introductionmentioning

confidence: 99%

Langmuir-Blodgett Films of Arachidic and Stearic Acids as Sensitive Coatings for Chloroform HF SAW Sensors

Gorbachev

Smirnov

Ivanov

et al. 2022

Sensors

View full text Add to dashboard Cite

Properties of the Langmuir-Blodgett (LB) films of arachidic and stearic acids, versus the amount of the films’ monolayers were studied and applied for chloroform vapor detection with acoustoelectric high-frequency SAW sensors, based on an AT quartz two-port Rayleigh type SAW resonator (414 MHz) and ST-X quartz SAW delay line (157.5 MHz). Using both devices, it was confirmed that the film with 17 monolayers of stearic acid deposited on the surface of the SAW delay line at a surface pressure of 30 mN/m in the solid phase has the best sensitivity towards chloroform vapors, compared with the same films with other numbers of monolayers. For the SAW resonator sensing using slightly longer arachidic acid molecules, the optimum performance was reached with 17 LB film layers due to a sharper decrease in the Q-factor with mass loading. To understand the background of the result, Atomic Force Microscopy (AFM) in intermittent contact mode was used to study the morphology of the films, depending on the number of monolayers. The presence of the advanced morphology of the film surface with a maximal average roughness (9.3 nm) and surface area (29.7 µm2) was found only for 17-monolayer film. The effects of the chloroform vapors on the amplitude and the phase of the acoustic signal for both SAW devices at 20 °C were measured and compared with those for toluene and ethanol vapors; the largest responses were detected for chloroform vapor. For the film with an optimal number of monolayers, the largest amplitude response was measured for the resonator-based device. Conversely, the largest change in the acoustic phase produced by chloroform adsorption was measured for delay-line configuration. Finally, it was established that the gas responses for both devices coated with the LB films are completely restored 60 s after chamber cleaning with dry air.

show abstract

Fatty Acids

Cited by 6 publications

References 16 publications

To Be or Not to Be …? Part III: Diesel versus Electrically Powered Cars

To Be or Not to Be …? Part III: Diesel versus Electrically Powered Cars

Dietary fatty acids and risk of Alzheimer's disease and related dementias: Observations from the Washington Heights‐Hamilton Heights‐Inwood Columbia Aging Project (WHICAP)

Langmuir-Blodgett Films of Arachidic and Stearic Acids as Sensitive Coatings for Chloroform HF SAW Sensors

Contact Info

Product

Resources

About