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Preparation of Activated Carbon from low cost P...
79,00 € *
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Preparation of Activated Carbon from low cost Precursors ab 79 € als Taschenbuch: And its Use for the Wastewater Treatment. Aus dem Bereich: Bücher, Wissenschaft, Chemie,

Anbieter: hugendubel
Stand: 09.12.2019
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Preparation of Activated Carbon from low cost P...
79,00 € *
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Preparation of Activated Carbon from low cost Precursors ab 79 EURO And its Use for the Wastewater Treatment

Anbieter: ebook.de
Stand: 09.12.2019
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Heteroepitaxy of Wide Band Gap Semiconductors o...
101,00 CHF *
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The wide band gap semiconductors SiC and GaN have shown great potential for use in high-temperature, high-power and high-frequency electronic devices as well as short-wavelength optical devices. However, the lack of large-area and low-cost substrates hindered their development seriously. Thus, the heteroepitaxy of SiC and GaN on silicon substrates is highly desirable for the Si-based electronic industry. In this study, we investigated the epitaxy of 3C-SiC and hexagonal GaN on silicon substrates and related devices. High quality 3C-SiC epilayers were deposited with trimethylsilane and silane/propane precursors, respectively. Inversion- mode n-channel 3C-SiC MOSFET devices with high channel mobility have been successfully fabricated. For GaN growth, AlGaN/GaN heterostructures were grown on 100 mm diameter Si(111) substrates without cracking using a high-temperature AlN buffer layer and a 3C-SiC buffer layer. In addition, the growth of hexagonal GaN on Si(100) substrates was demonstrated for the first time using a sputtered AlN buffer layer followed by a MOCVD grown AlN buffer layer.

Anbieter: Orell Fuessli CH
Stand: 09.12.2019
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Exploring the Vertebrate Central Cholinergic Ne...
347,00 CHF *
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Even if the “weapons of mass destruction” (WMD) and, among them, stocks of organoph- phorus (OP) agents (also referred to as war gases and nerve gases) were not found in Iraq following the US-Iraq war, the relative ease with which these substances can be made from harmless precursors and the low cost of their manufacture will continue to fascinate pow- hungry, ruthless dictators, as well as multinational and international terrorists, particularly as the close relationship between the OP agents and useful insecticides makes it easy to disguise the importation and purchase of small amounts of the precursors. Indeed, the use by Saddam Hussein of a nerve gas against the Kurds and his possible employment of the OP agents during his war with Iran, and the Sarin attack in the Tokyo underground by an extremist religious set magnetized the world with respect to the OP drugs. As these drugs exert their toxicity via their cholinergic action on the nervous, particularly central nervous, system, it is no wonder that the research in the cholinergic ? eld attracts, and merits, our intense attention. These considerations underlie the signi? cance of this book, as Alex Karczmar devotes an entire chapter of Exploring the Vertebrate Central Cholinergic Nervous System to anticholinest- ases (antiChEs), and as he is an acknowledged expert in the ? eld of cholinergic toxicity as well as a consultant to the Surgeon General of the U. S. Army.

Anbieter: Orell Fuessli CH
Stand: 09.12.2019
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Exploring the Vertebrate Central Cholinergic Ne...
252,99 € *
ggf. zzgl. Versand

Even if the “weapons of mass destruction” (WMD) and, among them, stocks of organoph- phorus (OP) agents (also referred to as war gases and nerve gases) were not found in Iraq following the US-Iraq war, the relative ease with which these substances can be made from harmless precursors and the low cost of their manufacture will continue to fascinate pow- hungry, ruthless dictators, as well as multinational and international terrorists, particularly as the close relationship between the OP agents and useful insecticides makes it easy to disguise the importation and purchase of small amounts of the precursors. Indeed, the use by Saddam Hussein of a nerve gas against the Kurds and his possible employment of the OP agents during his war with Iran, and the Sarin attack in the Tokyo underground by an extremist religious set magnetized the world with respect to the OP drugs. As these drugs exert their toxicity via their cholinergic action on the nervous, particularly central nervous, system, it is no wonder that the research in the cholinergic ? eld attracts, and merits, our intense attention. These considerations underlie the signi? cance of this book, as Alex Karczmar devotes an entire chapter of Exploring the Vertebrate Central Cholinergic Nervous System to anticholinest- ases (antiChEs), and as he is an acknowledged expert in the ? eld of cholinergic toxicity as well as a consultant to the Surgeon General of the U. S. Army.

Anbieter: Thalia AT
Stand: 09.12.2019
Zum Angebot
Heteroepitaxy of Wide Band Gap Semiconductors o...
53,99 € *
ggf. zzgl. Versand

The wide band gap semiconductors SiC and GaN have shown great potential for use in high-temperature, high-power and high-frequency electronic devices as well as short-wavelength optical devices. However, the lack of large-area and low-cost substrates hindered their development seriously. Thus, the heteroepitaxy of SiC and GaN on silicon substrates is highly desirable for the Si-based electronic industry. In this study, we investigated the epitaxy of 3C-SiC and hexagonal GaN on silicon substrates and related devices. High quality 3C-SiC epilayers were deposited with trimethylsilane and silane/propane precursors, respectively. Inversion- mode n-channel 3C-SiC MOSFET devices with high channel mobility have been successfully fabricated. For GaN growth, AlGaN/GaN heterostructures were grown on 100 mm diameter Si(111) substrates without cracking using a high-temperature AlN buffer layer and a 3C-SiC buffer layer. In addition, the growth of hexagonal GaN on Si(100) substrates was demonstrated for the first time using a sputtered AlN buffer layer followed by a MOCVD grown AlN buffer layer.

Anbieter: Thalia AT
Stand: 09.12.2019
Zum Angebot