(Press-News.org) Researchers from Moscow Institute of Physics and Technology, Viktor Zhukov, Vladislav Sechenov and Andrei Starikovsky, have published experimental data on the combustion of jet fuel in the journal Fuel. The results of their research are important for simulating processes in jet engines.
In their paper, the scientists described how quickly a mixture of jet fuel and oxygen ignites depending on different conditions. This value, called the induction period or combustion delay period, was defined for different temperatures, pressure values and blending ratios. The data obtained at the Department of Aerophysics and Space Research allows for validating kinetic models of the burning of kerosene, which is a complex mixture of various hydrocarbons.
According to Viktor Zhukov, scientists are able to accurately simulate the burning of simple gas mixtures, for example, natural gas or liquefied petroleum gas, and it is far more difficult to simulate the burning of more complex fuels, including jet fuel. The burning of such complex fuels is studied in a special experimental setup.
The paper focuses specifically on kerosene, not biofuels or alternative fuels based on liquefied natural gas. According to the researchers, the choice of fuel was determined by its prevalence: the vast majority of airlines operate on kerosene derived from petroleum. The cost of alternative fuels is about twice as high and their sources so far are too limited to mass-replace kerosene.
INFORMATION:
Note: An author of the study, Vladislav Sechenov, passed away in 2014, shortly before its publication. Mr. Sechenov was an assistant professor at MIPT and headed a laboratory at the Department of Aerophysics and Space Research. He authored a number of outstanding research projects on the physics of plasma.
Moscow Institute of Physics and Technology specialists studied jet fuel ignition
Scientists from Moscow Institute of Physics and Technology published an experimental study of ignition of jet fuel
2014-09-04
ELSE PRESS RELEASES FROM THIS DATE:
Should scientists handle retractions differently?
2014-09-04
It is one of the highest-profile cases of scientific fraud in memory: In 2005, South Korean researcher Woo-Suk Hwang and colleagues made international news by claiming that they had produced embryonic stem cells from a cloned human embryo using nuclear transfer. But within a year, the work had been debunked, soon followed by findings of fraud. South Korea put a moratorium on stem-cell research funding. Some scientists abandoned or reduced their work in the field.
But the case is not so simple: By 2007, other stem-cell researchers had found that the debunked research ...
Students report greater learning gains in traditional science courses
2014-09-04
Students taking traditional, in-class science courses reported higher perceived learning gains than students enrolled in online distance education science courses. Notably, African-American students taking traditional science courses self-reported greater affective and psychomotor learning gains than students taking online science courses.
These are the key findings of a new study co-authored by a Clemson University researcher and published in the most recent issue of Black History Bulletin.
The purpose of the study, funded by a grant from the National Science Foundation ...
Drexel team unveils Dreadnoughtus: A gigantic, exceptionally complete sauropod dinosaur
2014-09-04
This news release is available in Spanish.
PHILADELPHIA (September 4, 2014) – Scientists have discovered and described a new supermassive dinosaur species with the most complete skeleton ever found of its type. At 85 feet (26 m) long and weighing about 65 tons (59,300 kg) in life, Dreadnoughtus schrani is the largest land animal for which a body mass can be accurately calculated. Its skeleton is exceptionally complete, with over 70 percent of the bones, excluding the head, represented. Because all previously discovered supermassive dinosaurs are known only from relatively ...
Phase III FIRST™ (MM-020/IFM 07-01) trial of REVLIMID® (lenalidomide) plus dexamethasone in newly diagnosed multiple myeloma patients who are not candidates for stem cell transplant published in New E
2014-09-04
SUMMIT, N.J. (Sept. 4, 2014) – Celgene Corporation (NASDAQ:CELG) today announced that data from FIRST (MM-020/IFM 07-01)—an open-label phase III randomized study of continuous REVLIMID (lenalidomide) in combination with dexamethasone in patients newly diagnosed with multiple myeloma (NDMM) who are not candidates for stem cell transplant—have been published in the Sept. 4 issue of the New England Journal of Medicine.
Initial findings, including that the trial had met its primary endpoint of progression free survival (PFS), were reported during the plenary session at the ...
Nano-pea pod model widens electronics applications
2014-09-04
New York | Heidelberg, 4 September 2014 -- Periodic chain-like nanostructures are widely used in nanoelectronics. Typically, chain elements include the likes of quantum rings, quantum dots, or quantum graphs. Such a structure enables electrons to move along the chain, in theory, indefinitely. The trouble is that some applications require localised electrons—these are no longer in a continuous energy spectrum but in a discrete energy spectrum, instead. Now, a new study by Russian scientists identifies ways of disturbing the periodicity of a model nanostructure to obtain ...
Speaking of chemistry: Rethinking football head injuries (video)
2014-09-04
WASHINGTON, Sept. 4, 2014 — Football season is here, and along with thousands of lost hours of productivity from fantasy teams, there's a renewed discussion on the impact of head injuries on players. This week's Speaking of Chemistry focuses on a brain disorder called chronic traumatic encephalopathy (CTE), whose symptoms include memory loss, depression and aggressive or violent behavior. Current detection methods can only identify CTE after a patient has died, leaving many NFL players with a diagnosis that came too late. Now doctors are developing a way to spot CTE in ...
Titania-based material holds promise as new insulator for superconductors
2014-09-04
Research from North Carolina State University shows that a type of modified titania, or titanium dioxide, holds promise as an electrical insulator for superconducting magnets, allowing heat to dissipate while preserving the electrical paths along which current flows. Superconducting magnets are being investigated for use in next-generation power generating technologies and medical devices.
Regular conductors conduct electricity, but a small fraction of that energy is lost during transmission. Superconductors can handle much higher currents per square centimeter and lose ...
Normal-weight counselors feel more successful at helping obese patients slim
2014-09-04
A new study by researchers at the Johns Hopkins Bloomberg School of Public Health suggests that normal-weight nutrition and exercise counselors report feeling significantly more successful in getting their obese patients to lose weight than those who are overweight or obese.
A report on the findings, published online Sept. 4 in the journal Obesity, suggests that patients may be more receptive to those who "practice what they preach."
"Our research shows that the personal weight of health professionals matters when assessing their perceived level of success in helping ...
Breast conserving therapy shows survival benefit compared to mastectomy in early-stage patients
2014-09-04
When factoring in what is now known about breast cancer biology and heterogeneity, breast conserving therapy (BCT) may offer a greater survival benefit over mastectomy to women with early stage, hormone-receptor positive disease, according to research from The University of Texas MD Anderson Cancer Center.
The study findings defy the conventional belief that the two treatment interventions offer equal survival, and show the need to revisit some standards of breast cancer practice in the modern era.
The research was presented at the 2014 Breast Cancer Symposium by ...
Disparities persist in early-stage breast cancer treatment, MD Anderson study finds
2014-09-04
Despite its acceptance as standard of care for early stage breast cancer almost 25 years ago, barriers still exist that preclude patients from receiving breast conserving therapy (BCT), with some still opting for a mastectomy, according to research from The University of Texas MD Anderson Cancer Center.
The study, to be presented at the 2014 Breast Cancer Symposium, finds that those barriers that still exist are socio-economic, rather than medically-influenced. Meeghan Lautner, M.D., formerly a fellow at MD Anderson, now at The University of Texas San Antonio, will present ...
LAST 30 PRESS RELEASES:
Multichannel 3D-printed bioactive scaffold combined with siRNA delivery for spinal cord injury recovery
Triaptosis—an emerging paradigm in cancer therapeutics
A new paradigm in spectroscopic sensing: The revolutionary leap of SERS-optical waveguide integration and ai-enabled ultra-sensitive detection
Sweet tooth: How blood sugar migration in diabetes affects cavity development
Lowest suicide rate is in December but some in media still promote holiday-suicide myth
Record-breaking cosmic explosion challenges astronomers’ understanding of gamma-ray bursts
Excessive heat harms young children’s development, study suggests
Quanta Books to publish popular math and physics titles by Terence Tao and David Tong
Philanthropic partnerships fund next-generation instruments for mid-sized telescopes
AI offers ‘roadmap’ to plant genetics
Myosin XI-1: A key molecular target for salt-tolerant crops
Pusan National University study highlights the health hazards of ultrafine particles from small home appliances with electric heating coils and brushed DC motors
Global first: New Indigenous-led research initiative to revitalize legal orders
Transforming acoustic waves with a chip
When climate risk hits home, people listen: Study reveals key to engagement with disaster preparedness messaging
Major breakthrough against diabetes thanks to a microbial molecule that disarms inflammation
Silicon chips on the brain: Researchers announce a new generation of brain-computer interface
Getting rest is the best
Towards sustainable organic synthesis – Mechanochemistry replaces lithium with sodium in organic reactions
Wireless device ‘speaks’ to the brain with light
Greenhouse gases to intensify extreme flooding in the Central Himalayas
New study sheds light on Milky Way's mysterious chemical history
Could altering the daily timing of immunotherapy improve survival in people with cancer?
Weaving secondary battery electrodes with fibers and tying them like ropes for both durability and performance
Using social media may impair children’s attention
Science briefing: An update on GLP-1 drugs for obesity
Lower doses of immunotherapy for skin cancer give better results
Why didn’t the senior citizen cross the road? Slower crossings may help people with reduced mobility
ASH 2025: Study suggests that a virtual program focusing on diet and exercise can help reduce side effects of lymphoma treatment
A sound defense: Noisy pupae puff away potential predators
[Press-News.org] Moscow Institute of Physics and Technology specialists studied jet fuel ignitionScientists from Moscow Institute of Physics and Technology published an experimental study of ignition of jet fuel