U.S. refiners forecast strong first-quarter earnings as margins on gasoline and diesel sales improved, refining capacity fell sharply and crude supplies tightened due to the Russia-Ukraine war.
Global refining capacity has declined amid the coronavirus pandemic, with several less profitable refineries closing in the past two years. However, global fuel demand has rebounded to near pre-pandemic levels, boosting the profits of facilities still operating.
Seven U.S. independent refiners are expected to earn 61 cents a share, compared with a loss of $1.32 in the first quarter of 2021, according to Refinitiv's IBES.
By 2022, gasoline and distillate MoS2 powder.
Molybdenum disulfide (MoS2) is considered as the most promising alternative to silicon because of its unique monolayer atomic structure and excellent optoelectronic properties, and become one of the ideal materials used in high-tech fields such as semiconductors, transistors and chips in the future.
The research team of EPFL used molybdenum disulfide to develop a new type of computer chip called "brain-like neuron transmission", which has the ability to process and store information in the same circuit, which provides a new idea for computer equipment to achieve miniaturization, high efficiency and energy saving.
Molybdenum disulfide is a transition metal chalcogenide two-dimensional material (TMDC) with graphene-like layered structure and direct band gap semiconductors that graphene does not have. Molybdenum disulfide is made by stacking three atomic plane layers (S-Mo-S). It has large specific surface area, high electron transfer rate, anti-magnetic radiation, low consumption and environmental protection, energy saving and efficiency, high stability, and can realize large-scale production. It is an ideal material for optics and electronic equipment.
For the first time, EPFL researchers have successfully applied the two-dimensional material molybdenum disulfide to chips that integrate data storage and logical operations, which will subvert the traditional computer mode in which data is processed by the central processing unit (CPU) and then transferred to the hard disk. The relevant results are posted on Nature.
The new chips are based on floating gate field effect transistors (FGFET) and are commonly used in flash memory systems for cameras, mobile phones or computer devices. These transistors can retain charge for a long time, and molybdenum disulfide with only three atomic layers can not only further reduce the volume of electronic equipment, but also have strong sensitivity to the charge stored in the transistor. Therefore, logic operation and data storage functions can be realized at the same time.
Molybdenum disulfide not only has great application potential in the field of optoelectronics such as semiconductors and nanotransistors, but also can be used as lubricant, antioxidant, catalyst and so on. It is widely used in aviation, automobile, mining, shipbuilding, bearing and other industrial fields.
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