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  • Chemistry and Materials (General)  (2)
  • immigration  (2)
  • ABUNDANCE DISTRIBUTIONS  (1)
  • Alkalinity, total; Alkalinity, total, standard deviation; Amino acid, standard deviation; Amino acids; Ammonia; Ammonia, standard deviation; Animalia; Aragonite saturation state; Aragonite saturation state, standard deviation; Arthropoda; Ash; Ash, standard deviation; Behaviour; Bicarbonate ion; Bicarbonate ion, standard deviation; Calcite saturation state; Calcite saturation state, standard deviation; Calcium; Calcium, standard deviation; Calculated using CO2calc; Calculated using seacarb after Nisumaa et al. (2010); Calculated using seacarb after Orr et al. (2018); Carbohydrates, total; Carbohydrates, total, standard deviation; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbonate system computation flag; Carbon dioxide; Carbon dioxide, standard deviation; Catalase activity, per protein mass; Catalase activity, standard deviation; Change; Change, standard deviation; Chitin; Chitin, standard deviation; Coast and continental shelf; Containers and aquaria (20-1000 L or 〈 1 m**2); Feed conversion ratio; Feed conversion ratio, standard deviation; Feed intake; Feed intake, standard deviation; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Fugacity of carbon dioxide in seawater, standard deviation; Glutamic oxaloacetate transaminase activity; Glutamic oxaloacetate transaminase activity, standard deviation; Glutamic pyruvate transaminase activity; Glutamic pyruvate transaminase activity, standard deviation; Growth/Morphology; Hemocyte count; Hemocyte count, standard deviation; Indian Ocean; Laboratory experiment; Length; Length, standard deviation; Lipid peroxidation, per protein; Lipid peroxidation, standard deviation; Lipids, standard deviation; Lipids, total; Litopenaeus vannamei; Mass; Mass, standard deviation; Moisture; Moisture, standard deviation; Molt per day; Molt per day, standard deviation; Mortality/Survival; OA-ICC; Ocean Acidification International Coordination Centre; Other metabolic rates; Oxygen, dissolved; Oxygen, dissolved, standard deviation; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH; pH, standard deviation; Potassium; Potassium, standard deviation; Protein efficiency ratio; Protein efficiency ratio, standard deviation; Proteins; Proteins, standard deviation; Registration number of species; Salinity; Salinity, standard deviation; Single species; Sodium; Sodium, standard deviation; Species; Specific growth rate; Specific growth rate, standard deviation; Superoxide dismutase activity, standard deviation; Superoxide dismutase activity, unit per protein mass; Survival; Survival rate, standard deviation; Temperature, water; Temperature, water, standard deviation; Treatment; Tropical; Type; Uniform resource locator/link to reference; Zooplankton  (1)
  • 2020-2024  (4)
  • 2000-2004  (2)
Collection
Keywords
Publisher
Language
Years
  • 2020-2024  (4)
  • 2000-2004  (2)
Year
  • 1
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    Seawater carbonate chemistry and growth, biochemical, antioxidants, metabolic enzymes and hemocytes population of the shrimp Litopenaeus vannamei (2021)
    PANGAEA
    Details
    Publication Date: 2024-03-20
    Description: Acidification in the marine environment has become a global issue that creates serious threats to marine organisms. In the present study, we evaluated the effect of CO2 driven acidification on the shrimp Litopenaeus vannamei post-larvae (PL). L. vannamei PL were exposed to six different CO2 driven acidified seawater, such as pH 8.20 (control), pH 7.8 (IPCC-predicted ocean pH by 2100), 7.6, 7.4, 7.2 and 7.0 with corresponding pCO2 level of 380.66, 557.53, 878.55, 1355.48, 2129.46, and 3312.12 μatm for seven weeks. At the end of the acidification experiment, results revealed that survival, growth, feed index, biochemical constitutes, chitin, minerals (Na, K, and Ca), and hemocyte populations of shrimps were found to be significantly decreased in CO2 driven acidified seawater which indicates the negative impacts of acidified seawater on these parameters in L. vannamei. Further, the level of antioxidants, lipid peroxidation, and metabolic enzymes were significantly higher in the muscle of shrimps exposed to acidified seawater suggests that the L. vannamei under oxidative stress and metabolic stress. Among these various acidified seawater experiment, pH 7.6 to 7.0 produced a significantly adverse effect on shrimps. Hence, the present study concluded that the elevated level of seawater acidification can produce harmful effects on L. vannamei PL which leads to potential threats to shrimp species in the marine environment.
    Keywords: Alkalinity, total; Alkalinity, total, standard deviation; Amino acid, standard deviation; Amino acids; Ammonia; Ammonia, standard deviation; Animalia; Aragonite saturation state; Aragonite saturation state, standard deviation; Arthropoda; Ash; Ash, standard deviation; Behaviour; Bicarbonate ion; Bicarbonate ion, standard deviation; Calcite saturation state; Calcite saturation state, standard deviation; Calcium; Calcium, standard deviation; Calculated using CO2calc; Calculated using seacarb after Nisumaa et al. (2010); Calculated using seacarb after Orr et al. (2018); Carbohydrates, total; Carbohydrates, total, standard deviation; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbonate system computation flag; Carbon dioxide; Carbon dioxide, standard deviation; Catalase activity, per protein mass; Catalase activity, standard deviation; Change; Change, standard deviation; Chitin; Chitin, standard deviation; Coast and continental shelf; Containers and aquaria (20-1000 L or 〈 1 m**2); Feed conversion ratio; Feed conversion ratio, standard deviation; Feed intake; Feed intake, standard deviation; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Fugacity of carbon dioxide in seawater, standard deviation; Glutamic oxaloacetate transaminase activity; Glutamic oxaloacetate transaminase activity, standard deviation; Glutamic pyruvate transaminase activity; Glutamic pyruvate transaminase activity, standard deviation; Growth/Morphology; Hemocyte count; Hemocyte count, standard deviation; Indian Ocean; Laboratory experiment; Length; Length, standard deviation; Lipid peroxidation, per protein; Lipid peroxidation, standard deviation; Lipids, standard deviation; Lipids, total; Litopenaeus vannamei; Mass; Mass, standard deviation; Moisture; Moisture, standard deviation; Molt per day; Molt per day, standard deviation; Mortality/Survival; OA-ICC; Ocean Acidification International Coordination Centre; Other metabolic rates; Oxygen, dissolved; Oxygen, dissolved, standard deviation; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH; pH, standard deviation; Potassium; Potassium, standard deviation; Protein efficiency ratio; Protein efficiency ratio, standard deviation; Proteins; Proteins, standard deviation; Registration number of species; Salinity; Salinity, standard deviation; Single species; Sodium; Sodium, standard deviation; Species; Specific growth rate; Specific growth rate, standard deviation; Superoxide dismutase activity, standard deviation; Superoxide dismutase activity, unit per protein mass; Survival; Survival rate, standard deviation; Temperature, water; Temperature, water, standard deviation; Treatment; Tropical; Type; Uniform resource locator/link to reference; Zooplankton
    Type: Dataset
    Format: text/tab-separated-values, 612 data points
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    DATA PANGAEA
  • 2
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    World of Walls (2021)
    Open Book Publishers
    Details
    Publication Date: 2024-03-28
    Description: """We’re going to build a wall.” Borders have been drawn since the beginning of time, but in recent years artificial barriers have become increasingly significant to the political conversation across the world. Donald Trump was elected President of the United States while promising to build a wall on the Mexico border, and in Europe, the international movements of migrants and refugees have sparked fierce discussion about whether and how countries should restrict access to their territory by erecting physical barriers. Virtual walls are also built and crushed at increasing speed. In the post-9/11 era there is a greater danger from so-called ""transnational non-state actors”, and computer hacking and cyberterrorism threaten to overwhelm our technological barriers. In this timely and original book, Said Saddiki scrutinises the physical and virtual walls located in four continents, including Israel, India, the southern EU border, Morocco, and the proposed border wall between Mexico and the US. Saddiki’s detailed analysis explores the tensions between the rise of globalisation, which some have argued will lead to a ""borderless world” and ""the end of the nation-state”, and the rapid development in recent decades of border control systems. Saddiki examines both regular and irregular cross-border activities, including the flow of people, goods, ideas, drugs, weapons, capital, and information, and explores the disparities that are reflected by barriers to such activities. He considers the consequences of the construction of physical and virtual walls, including their impact on international relations and the rise of the multi-billion dollar security market. World of Walls: The Structure, Roles and Effectiveness of Separation Barriers is important reading for all those interested in the topics of immigration, border security, international relations, and policy."
    Keywords: india ; immigration ; walls ; marocco ; borders ; israel ; mexico ; virtual barriers ; international relations ; border security ; u.s ; Morocco ; Western Sahara ; thema EDItEUR::J Society and Social Sciences::JB Society and culture: general::JBF Social and ethical issues::JBFH Migration, immigration and emigration ; thema EDItEUR::5 Interest qualifiers::5P Relating to specific groups and cultures or social and cultural interests::5PB Relating to peoples: ethnic groups, indigenous peoples, cultures and other groupings of people::5PBC Relating to migrant groups / diaspora communities or peoples ; thema EDItEUR::J Society and Social Sciences::JP Politics and government::JPS International relations
    Language: English
    Format: image/jpeg
    Format: image/jpeg
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    E-BOOK
  • 3
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    World of Walls: The Structure, Roles and Effectiveness of Separation Barriers  (2021)
    Open Book Publishers
    Details
    Publication Date: 2023-12-20
    Description: "We’re going to build a wall.” Borders have been drawn since the beginning of time, but in recent years artificial barriers have become increasingly significant to the political conversation across the world. Donald Trump was elected President of the United States while promising to build a wall on the Mexico border, and in Europe, the international movements of migrants and refugees have sparked fierce discussion about whether and how countries should restrict access to their territory by erecting physical barriers. Virtual walls are also built and crushed at increasing speed. In the post-9/11 era there is a greater danger from so-called "transnational non-state actors”, and computer hacking and cyberterrorism threaten to overwhelm our technological barriers. In this timely and original book, Said Saddiki scrutinises the physical and virtual walls located in four continents, including Israel, India, the southern EU border, Morocco, and the proposed border wall between Mexico and the US. Saddiki’s detailed analysis explores the tensions between the rise of globalisation, which some have argued will lead to a "borderless world” and "the end of the nation-state”, and the rapid development in recent decades of border control systems. Saddiki examines both regular and irregular cross-border activities, including the flow of people, goods, ideas, drugs, weapons, capital, and information, and explores the disparities that are reflected by barriers to such activities. He considers the consequences of the construction of physical and virtual walls, including their impact on international relations and the rise of the multi-billion dollar security market. World of Walls: The Structure, Roles and Effectiveness of Separation Barriers is important reading for all those interested in the topics of immigration, border security, international relations, and policy.
    Keywords: JZ2-6530 ; JV1-9480 ; international relations ; border security ; immigration ; walls ; Mexico ; Israel ; U.S ; Borders ; Marocco ; virtual barriers ; India ; bic Book Industry Communication::J Society & social sciences::JP Politics & government::JPS International relations
    Language: English
    Format: application/octet-stream
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    E-BOOK
  • 4
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    Consistent patterns of common species across tropical tree communities (2024)
    In:  Nature vol. 625 no. 7996, pp. 728-734
    Details
    Publication Date: 2024-04-13
    Description: Trees structure the Earth's most biodiverse ecosystem, tropical forests. The vast number of tree species presents a formidable challenge to understanding these forests, including their response to environmental change, as very little is known about most tropical tree species. A focus on the common species may circumvent this challenge. Here we investigate abundance patterns of common tree species using inventory data on 1,003,805 trees with trunk diameters of at least 10 cm across 1,568 locations1-6 in closed-canopy, structurally intact old-growth tropical forests in Africa, Amazonia and Southeast Asia. We estimate that 2.2%, 2.2% and 2.3% of species comprise 50% of the tropical trees in these regions, respectively. Extrapolating across all closed-canopy tropical forests, we estimate that just 1,053 species comprise half of Earth's 800 billion tropical trees with trunk diameters of at least 10 cm. Despite differing biogeographic, climatic and anthropogenic histories7, we find notably consistent patterns of common species and species abundance distributions across the continents. This suggests that fundamental mechanisms of tree community assembly may apply to all tropical forests. Resampling analyses show that the most common species are likely to belong to a manageable list of known species, enabling targeted efforts to understand their ecology. Although they do not detract from the importance of rare species, our results open new opportunities to understand the world's most diverse forests, including modelling their response to environmental change, by focusing on the common species that constitute the majority of their trees.
    Keywords: Multidisciplinary ; ABUNDANCE DISTRIBUTIONS ; ALPHA-DIVERSITY ; PLANT DIVERSITY ; FORESTS ; BIOMASS
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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    PAPER (OA)
  • 5
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    Recent Progress in Materials Selection and Characterizations for Ultra Long Duration Balloon (ULDB) Missions (2000)
    In:  Other Sources
    Details
    Publication Date: 2019-07-17
    Description: The development and characterization of materials suitable for ultra long duration balloon flights has recently been the focus of the materials R&D efforts for the NASA balloon program. Although basic materials selection criteria is similar to those used for conventional balloon missions, additional considerations related to balloon design, fabrication, durability, environmental effects, and cost must also be considered. Among these, the highest impact on material selection is, related to the design shape of the balloon. Work done by independent researchers indicate that for pumpkin type balloons, the load-carrying member is the tendon rather than the structural envelope. This in turn lowers the strength requirements on the envelope material to a large extent. Several materials and material combinations were explored for both design systems. This paper will present the progress made to date in the selection and characterization of these materials and the technical challenges remaining to be overcome,
    Keywords: Chemistry and Materials (General)
    Type: COSPAR2000; Jan 01, 2000; Warsaw,; Poland
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    National Educators' Workshop: Update 2001: Standard Experiments in Engineering, Materials Science, and Technology (2002)
    In:  CASI
    Details
    Publication Date: 2019-08-13
    Description: This document contains a collection of experiments presented and demonstrated at the National Educators' Workshop: Update 2001 held in College Park, Maryland, October 14-17, 2001.
    Keywords: Chemistry and Materials (General)
    Type: NASA/CP-2002-211735 , NAS 1.55:211735 , L-18193 , National Educators' Workshop: Update 2001 Standard Experiments in Engineering, Materials Science, and Technology; NASA/CP-2002-211735|National Educators'' Workshop: Update 2001: Standard Experiments in Engineering, Materials Science, and Technology; Oct 14, 2001 - Oct 17, 2001; College Park, MD; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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