نتایج جستجو برای: vents

تعداد نتایج: 2313  

2001
Françoise Gaill Magali Zbinden Florence Pradillon Juliette Ravaux Bruce Shillito

Introduction The deep sea hydrothermal vents are one of the most unusual habitats found on earth (review in Humphris et al. 1995). Vents are surrounded by a dense community which is supported by primary production through chemoautotrophic bacteria. Most of this fauna is composed of sessile animals that harbor bacteria as intracellular symbionts. Such geothermally-driven communities are dependen...

2007
Zeyn A Saigol

Exploration for robotic mapping is typically handled using greedy entropy reduction. Here we show how to apply information lookahead planning to a challenging instance of this problem in which an Autonomous Underwater Vehicle (AUV) maps hydrothermal vents. Given a simulation of vent behaviour we derive an observation function to turn the planning for mapping problem into a POMDP. We test a vari...

Journal: :Nature 2000
A L Reysenbach A B Banta D R Boone S C Cary G W Luther

1. Tans, S . J., Verschueren, R. M. & Dekker, C. Nature 393, 49–52 (1998). 2. Martel, R., Schmidt, T., Shea, H. R., Hertel, T. & Avouris, Ph. Appl. Phys. Lett. 73, 2447–2449 (1998). 3. Antonov, R. D. & Johnson, A. T. Phys. Rev. Lett. 83, 3274–3276 (1999). 4. Soh, H. T. et al. Appl. Phys. Lett. 75, 627–629 (1999). 5. Yao, Z., Postma, H. W. Ch., Balents, L. & Dekker, C. Nature 402, 273–276 (1999)...

Journal: :journal of health sciences and surveillance system 0
fahime khademi department of environmental health engineering, school of health, shiraz university of medical sciences, shiraz, iran. mohammad reza samaei department of environmental health engineering, school of health, shiraz university of medical sciences, shiraz, iran. kourosh azizi department of entomology, school of health, shiraz university of medical sciences, shiraz, iran. abbas shahsavani environmental and occupational hazards control research center, shahidbeheshti university of medical science, tehran, iran & department of environmental health engineering, school of public health, shahidbeheshti university of medical science, tehran, iran hassan hashemi department of environmental health engineering, school of health, shiraz university of medical sciences, shiraz, iran. aida iraji central research laboratory, shiraz university of medical sciences, shiraz, iran.

abstract background: biogas is obtained by anaerobic decomposition of organic wastes buried materials used to produce electricity, heat and biofuels. biogas is at the second place for power generation after hydropower and in 2000 about 6% of the world power generation was allocated to biogas. biogas is composed of 40–45 vol% co2, 55–65 vol% ch4, and about 1% non-methanevocs, and non-methane vol...

Journal: :Proceedings of the National Academy of Sciences 2000

Journal: :Geophysical Research Letters 1996

2016
Coraline Mercier Julien Lossouarn Thomas Haverkamp Nadège Bienvenu Anne Godfroy Valérie Cueff-Gauchard Claire Geslin Camilla Nesbo

Here, we present the draft genome sequences of two thermophilic Marinitoga strain members of the Thermotogales order, Marinitoga camini DV1155 and Marinitoga camini DV1197. These strains were isolated from deep-sea hydrothermal vents of the Mid-Atlantic Ridge.

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