منابع مشابه
Nanotubes are High Mobility Semiconductors
The electron transport properties of a very long (20 micron) CVD-grown nanotube are reported. In this device the transport is dominated by intrinsic scattering processes at room temperature. The room temperature hole mobility is 20,000 cm/Vs, exceeding that of technologically-relevant semiconductors. The mobility increases with decreasing temperature, and is estimated to be greater than 180,000...
متن کاملChloroplasts Are Central Players in Sugar-Induced Leaf Growth.
Leaves are the plant's powerhouses, providing energy for all organs through sugar production during photosynthesis. However, sugars serve not only as a metabolic energy source for sink tissues but also as signaling molecules, affecting gene expression through conserved signaling pathways to regulate plant growth and development. Here, we describe an in vitro experimental assay, allowing one to ...
متن کاملHigher Plant Proteins of Cyanobacterial Origin: Are They or Are They Not Preferentially Targeted to Chloroplasts?
Dear Editor, What does the evolutionary origin of a plant protein tell about its subcellular localization? Naively thinking, one would assume that plant proteins that were originally encoded in the endosymbiont genome are targeted to the chloroplast. However, published data seem to support only a loose link between evolutionary origin and subcellular localization. About half of the Arabidopsis ...
متن کاملIsolated Chloroplasts
1. Chloroplasts prepared by the non-aqueous technique will, after fragmentation by ultrasonic treatment, incorporate [2-14C]mevalonic acid into phytoene, the first C40 compound formed in the biosynthetic sequence to coloured carotenoids. 2. With suspensions containing 3*5mg. of chlorophyll, the optimum amounts of cofactor required were ATP (10,umoles), magnesium chloride (20,umoles) and glutath...
متن کاملPower Semiconductors
The objective of this paper is present the data requirements for modeling power electronic devices to aid in modeling power converters for transient simulation studies. The presentation will target applications of power semiconductor devices commonly used in medium to high power applications: insulated gate bipolar transistors (IGBTs), Thyristors (SCR), and Gate TurnOff Thyristors (GTOs) and po...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1957
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.43.1.105