Mitsubishi

About: Mitsubishi is a company organization based out in Tokyo, Japan. It is known for research contribution in the topics: Layer (electronics) & Signal. The organization has 53115 authors who have published 54821 publications receiving 870150 citations. The organization is also known as: Mitsubishi Group of Companies & Mitsubishi Companies.

Microbial degradation of aliphatic and aliphatic-aromatic co-polyesters

Abstract: Biodegradable plastics (BPs) have attracted much attention since more than a decade because they can easily be degraded by microorganisms in the environment. The development of aliphatic-aromatic co-polyesters has combined excellent mechanical properties with biodegradability and an ideal replacement for the conventional nondegradable thermoplastics. The microorganisms degrading these polyesters are widely distributed in various environments. Although various aliphatic, aromatic, and aliphatic-aromatic co-polyester-degrading microorganisms and their enzymes have been studied and characterized, there are still many groups of microorganisms and enzymes with varying properties awaiting various applications. In this review, we have reported some new microorganisms and their enzymes which could degrade various aliphatic, aromatic, as well as aliphatic-aromatic co-polyesters like poly(butylene succinate) (PBS), poly(butylene succinate)-co-(butylene adipate) (PBSA), poly(e-caprolactone) (PCL), poly(ethylene succinate) (PES), poly(L-lactic acid) (PLA), poly(3-hydroxybutyrate) and poly(3-hydoxybutyrate-co-3-hydroxyvalterate) (PHB/PHBV), poly(ethylene terephthalate) (PET), poly(butylene terephthalate) (PBT), poly(butylene adipate-co-terephthalate (PBAT), poly(butylene succinate-co-terephthalate) (PBST), and poly(butylene succinate/terephthalate/isophthalate)-co-(lactate) (PBSTIL). The mechanism of degradation of aliphatic as well as aliphatic-aromatic co-polyesters has also been discussed. The degradation ability of microorganisms against various polyesters might be useful for the treatment and recycling of biodegradable wastes or bioremediation of the polyester-contaminated environments.

Vertical type MOS transistor and method of formation thereof

Abstract: A vertical MOS transistor having its channel length determined by the thickness of an insulating layer provided over a semiconductor substrate, rather than by the depth of a trench in which the transistor is formed. As a result, the characteristics of the transistor as relatively unaffected by doping and heat-treatment steps which are performed during formation. Also, the transistor may be formed so as to occupy very little surface area, making it suitable for application in high-density DRAMs. 0O048455372

Shaft sealing mechanism

Abstract: There is provided a shaft sealing mechanism in which, even in a case where eccentricity occurs in a parent machine, flutter behavior of the sheets can be reliably prevented, the sheets can be prevented from failing due to fatigue, and also a long life and reliability of the shaft sealing mechanism can be improved In a shaft sealing mechanism (25) which prevents fluid from flowing in an axial direction of a rotor (23) through an annular gap between the rotor (23) and a stator (24), there are provided a high pressure side plate (53) positioned on a high pressure side region of a plurality of sheets (29), and a low pressure side plate (54) positioned on a low pressure side region of a plurality of sheets (29), and the construction is such that in a state in which the plurality of sheets (29) is fixed on the stator side (24), and when under gas pressure, the parts (29) make contact with each other

Electrode for secondary battery

Abstract: An electrode for secondary batteries, in which an alkali metal of an active material is carried by a carrier, whose principal component is the carbonaceous material of the multilayer structure comprising a surface layer and the nucleous enveloped therein and satisfies the following conditions: (1) a true density ς is not less than 1.80 g/cm3; (2) in Raman spectroscopic analysis using the argon ion laser beam of 5145 A in its wavelength, peaks P?A? and PB exist within the ranges of 1580-1620 cm?-1? and 1350-1370 cm-1 respectively, and the ratio R = I?B?/IA of the intensity IB of PB to the intensity IA of PA is not less than 0.4.

Synthetic Method and Luminescence Properties of Sr x Ca1 − x AlSiN3 : Eu2 + Mixed Nitride Phosphors

Abstract: Single-phase Eu 2+ -doped Sr x Ca 1-x AlSiN 3 (0.2 ≤ x ≤ 0.8) red phosphor was obtained by nitridation of Ca 1-x-y Sr x Eu y (Al 0.5 ,Si 0.5 ) 2 alloy powder under the high pressure of 190 MPa in a hot isostatic pressing apparatus at 2173 K. The unit cell volumes of the single phase expanded linearly with the increase in value of x from 0.2 to 0.8. A blueshift of the red emission peak of Eu 2+ from 650 to 620 nm was observed by weakening the crystal field strength around the Eu 2+ ion. Sr x Ca 1-x AlSiN 3 :0.8 mol % Eu 2+ , with the optimum Eu concentration, showed high photoluminescence intensity over the whole range of x value from 0.2 to 0.8. Unlike nitrides of alkaline-earth or rare-earth metals, the intermetallic alloy powder was stable under ambient conditions and was thus suitable as starting material for red phosphors for industrial production. In x = 0.8 samples synthesized at 190 MPa, the same structure as CaAlSiN 3 , space group 36 (Cmc2 1 ), was retained at unit cell volumes up to 289.92 A 3 , exhibiting the maximum solubility of Sr 2+ in the solid solution, Sr x Ca 1-x AlSiN 3 (0 ≤ x ≤ 0.8).