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  • 2020-2024  (12)
  • 1990-1994  (196)
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  • 1
    Online Resource
    Online Resource
    Cham :Springer International Publishing :
    Keywords: Human physiology. ; Science History. ; Cytology. ; Human Physiology. ; History of Science. ; Cell Biology.
    Description / Table of Contents: Warren Lewis: Early Life, Educational Background, and Early Research -- Margaret Reed: Early Life, Educational Background, and Early Research -- Early Collaborative Research -- Move to Carnegie Institution -- Research and Family Life in the Early 1920s -- Research in the Late 1920s -- Warren’s Research in the 1930s -- Margaret’s Research in the 1930s -- Impact, Accolades, and a Cottage in Maine -- Research after Warren’s “Retirement” -- Final Years: The End of Research, but not Honors.
    Abstract: This monograph is dedicated to the lives and scientific achievements of the physiology pioneers Warren and Margaret Lewis. Their story spans the first half of the 20th century, from their respective educations through early, independent research to joint research from 1910 to 1955. Among the numerous developments they initiated, were the discovery of pinocytosis, the beginnings of video microscopy and the development of the first mammalian tissue cultures. Their research expanded the theoretical knowledge of cell structure and function. On a more practical level, they advanced many laboratory methods, like the first recipes for culture media. The text is beautifully enriched with personal anecdotes about their lives. This is the story of two scientific pioneers in the context of early 20th century biology and physiology. It is an inspiration for senior and aspiring researchers.
    Type of Medium: Online Resource
    Pages: XI, 195 p. 49 illus., 25 illus. in color. , online resource.
    Edition: 1st ed. 2022.
    ISBN: 9783031118944
    Series Statement: Perspectives in Physiology,
    DDC: 612
    Language: English
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  • 2
    Monograph available for loan
    Monograph available for loan
    Chichester [u.a.] : Wiley
    Call number: AWI G5-96-0262
    Type of Medium: Monograph available for loan
    Pages: XVI, 526 S.
    ISBN: 0471940437
    Branch Library: AWI Library
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  • 3
    Publication Date: 2024-03-15
    Description: Larger benthic foraminifera (LBF) are unicellular eukaryotic calcifying organisms and an important component of tropical and subtropical modern and ancient oceanic ecosystems. They are major calcium carbonate producers and important contributors to primary production due to the photosynthetic activity of their symbiotic algae. Studies investigating the response of LBF to seawater carbonate chemistry changes are therefore essential for understanding the impact of climate changes and ocean acidification (OA) on shallow marine ecosystems. In this study, calcification, respiration, and photosynthesis of the widespread diatom‐bearing LBF Operculina ammonoides were measured in laboratory experiments that included manipulation of carbonate chemistry parameters. pH was altered while keeping dissolved inorganic carbon (DIC) constant, and DIC was altered while keeping pH constant. The results show clear vulnerability of O. ammonoides to low pH and CO32− under constant DIC conditions, and no increased photosynthesis or calcification under high DIC concentrations. Our results call into question previous hypotheses, suggesting that mechanisms such as the degree of cellular control on calcification site pH/DIC and/or enhanced symbiont photosynthesis in response to OA may render the hyaline (perforate and calcitic‐radial) LBF to be less responsive to OA than porcelaneous LBF. In addition, manipulating DIC did not affect calcification when pH was close to present seawater levels in a model encompassing the total population size range. In contrast, larger individuals (〉1,200 μm, 〉1 mg) were sensitive to changes in DIC, a phenomenon we attribute to their physiological requirement to concentrate large quantities of DIC for their calcification process.
    Keywords: Alkalinity, total; Aragonite saturation state; Benthos; Bicarbonate ion; Bottles or small containers/Aquaria (〈20 L); Calcification/Dissolution; Calcification rate of calcium carbonate; Calcite saturation state; Calcium carbonate, mass; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Chromista; Coast and continental shelf; Experiment; Experiment duration; Foraminifera; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Heterotrophic prokaryotes; Hydroxide ion; Identification; Individuals; Laboratory experiment; Mass; OA-ICC; Ocean Acidification International Coordination Centre; Operculina ammonoides; Oxygen evolution; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; Photosynthesis rate; Primary production/Photosynthesis; Ratio; Red Sea; Registration number of species; Respiration; Salinity; Single species; Size; Species; Temperate; Temperature, water; Time in hours; Treatment; Type; Uniform resource locator/link to reference
    Type: Dataset
    Format: text/tab-separated-values, 3889 data points
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  • 4
    Publication Date: 2024-04-20
    Description: We have measured Mg/Ca, Sr/Ca and Na/Ca in carbonate shells of the deepwater bivalve Acesta excavata. The samples were collected in the Sula reef and the Leksa reef on the Norwegian margin in summer 2014. Measurements were conducted using LA-ICP-MS.Laser ablation was performed using a Resolution M50 193 nm ArF Excimer Laser system (Resonetics), with a 72 μm beam diameter, a pulse rate of 10 Hz and 10 μm/s scan speed. Total sweep time was 0.65 s. Prior to the measurement a fast precleaning pass was conducted at 0.2 mm/s, 10Hz, and 104 μm laser spot size. Elemental ratio analysis was performed with a Thermo-Scientific ELEMENT XR sector field ICP-MS. In total, eight specimens were measured. In three specimens we measuerd perpendicular to the shell to investigate all shell layers. Additionally, we measured all eight samples in the fibrous and microgranular shell section (calcite). The measurements were taken from the ontogenetic oldest part of the bivalve (ventral side), spanning a length of 20 mm.
    Keywords: Aecsta excavata; Binary Object; BIOACID; Bivalve; Dive #18; Dive #4; File content; JAGO; Mg/Ca; Na/Ca; POS473; POS473_892-1; POS473_911-1; Poseidon; Sr/Ca; Submersible JAGO
    Type: Dataset
    Format: text/tab-separated-values, 6 data points
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  • 5
    Publication Date: 2024-04-25
    Description: New and compiled Na/Ca measurements of the planktonic foraminifera Globigerinoides ruber. The dataset contains data from foraminiferal samples 1) collected from plankton tows and sediment traps which span a wide salinity range (32.5 - 40.7 salinity units) across the Bay-of-Bengal, Arabian Sea, and Red Sea, 2) cultured in the laboratory under varying carbonate chemistry, and 3) a globally-distributed suite of core-top samples. Na/Ca was measured using both solution and laser ablation ICP-MS. The foraminiferal Na/Ca data are provided alongside environmental parameters for each sample (e.g. temperature, salinity, pH, bottom water Omega calcite), in order to assess the environmental controls on Na/Ca in foraminifera. The data accompany the following manuscript: Gray et al. (2023, doi:10.1016/j.gca.2023.03.011).
    Keywords: Analytical method; as_m5_1; as_m5_10; as_m5_11; as_m5_12; as_m5_13; as_m5_14; as_m5_15; as_m5_16; as_m5_17; as_m5_18; as_m5_19; as_m5_2; as_m5_20; as_m5_21; as_m5_3; as_m5_4; as_m5_5; as_m5_6; as_m5_7; as_m5_8; as_m5_9; as_m5_LA; Calcite saturation state; Calculated according to Henehan et al. (2015); CAR22Z_RUBER_SS_250-300; CAR22Z_RUBER_SS_300-355; Carbonate ion; cbbt_LA; cbbt06_C10; cbbt06_C11; cbbt06_C12; cbbt06_C2; cbbt06_C3; cbbt06_C4; cbbt06_C6; cbbt06_C7; cbbt06_C8; cbbt06_C9; Core; CORE; DEPTH, water; Eilat_RUBER_SL_250-300; Eilat_RUBER_SS_250-300; Eilat_Tow_DE; Eilat_Tow1; Eilat_Tow2; Eilat_Tow3; Event label; Foraminifera; Foraminiferal geochemistry; G4_RUBER_SL_300-355; G4_RUBER_SL_355-400; G4_RUBER_SS_300-355; GGC48_RUBER_MIXED_250-300; GGC48_RUBER_MIXED_300-355; GGC48_RUBER_SS_250-300; GGC48_RUBER_SS_300-355; Globigerinoides ruber white; Globigerinoides ruber white, size; Globigerinoides ruber white, Sodium/Calcium ratio; Globigerinoides ruber white, Sodium/Calcium ratio, standard deviation; LATITUDE; LONGITUDE; MC120_RUBER_SL_250-300; MC120_RUBER_SL_300-355; MC120_RUBER_SS_250-300; MC120_RUBER_SS_300-355; MC120_RUBER_SS_355-400; MC29__RUBER_SL_250-355; MC394_RUBER_MIXED_300-355; MC40_RUBER_SL_300-355; MC420_RUBER_SL_250-300; MC420_RUBER_SL_300-355; MC420_RUBER_SL_355-400; MC420_RUBER_SS_250-300; MC420_RUBER_SS_300-355; MC420_RUBER_SS_355-400; MC436_RUBER_SL_300-355; MC497_RUBER_SL_300-355; MC497_RUBER_SS_300-355; MC497_RUBER_SS_355-400; MC497_RUBER_SS_400-455; MC655_RUBER_PINK; MC655_RUBER_SL_250-300; MC655_RUBER_SL_300-355; mezger2016_pp1; mezger2016_pp2; mezger2016_pp4; mezger2016_pp5; mezger2016_pp7; mezger2016_pp9; Microscopy; Na/Ca; nbbt09_N1; nbbt09_N10_11; nbbt09_N13; nbbt09_N3; nbbt09_N4; nbbt09_N5; nbbt09_N6; nbbt09_N7; nbbt09_N8; OC476-SR223_RUBER_SL_250-300; OC476-SR223_RUBER_SL_300-355; OC476-SR223_RUBER_SS_250-355; ODP_664_RUBER_SL_300-355; ODP_664_RUBER_SS_300-355; pH; planktic foraminifera; Plankton Tow; Q699_RUBER_SL_250-355; Reference/source; Salinity; Sample ID; Sample type; sbbt_LA; sbbt09_S1; sbbt09_S10; sbbt09_S11; sbbt09_S12; sbbt09_S2; sbbt09_S3; sbbt09_S4; sbbt09_S5; sbbt09_S6; sbbt09_S8; sbbt09_S9; Sediment trap; See description in dataset comment; Site; T329_RUBER_SL_250-300; T329_RUBER_SL_300-355; T329_RUBER_SL_355-400; T329_RUBER_SS_250-300; T329_RUBER_SS_300-355; T329_RUBER_SS_355-400; Temperature, water; TOWN; Tow net; U226_RUBER_SL_250-355
    Type: Dataset
    Format: text/tab-separated-values, 1907 data points
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  • 6
    Publication Date: 2024-02-08
    Description: Shells of the giant clam Tridacna can provide decade-long records of past environmental conditions via their geochemical composition and structurally through growth banding. Counting the daily bands can give an accurate internal age model with high temporal resolution, but daily banding is not always visually retrievable, especially in fossil specimens. We show that daily geochemical cycles (e.g., Mg/Ca) are resolvable via highly spatially resolved laser-ablation inductively coupled plasma mass spectrometry (LA-ICPMS; 3 \xc3\x97 33 \xce\xbcm laser slit) in our Miocene (\xe2\x88\xbc10 Ma) specimen, even in areas where daily banding is not visually discernible. By applying wavelet transformation on the measured daily geochemical cycles, we quantify varying daily growth rates throughout the shell. These growth rates are thus used to build an internal age model independent of optical daily band countability. Such an age model can be used to convert the measured elemental ratios from a function of distance to a function of time, which helps evaluate paleoenvironmental proxy data, for example, regarding the timing of sub-seasonal events. Furthermore, the quantification of daily growth rates across the shell facilitates the evaluation of (co)dependencies between growth rates and corresponding elemental compositions.
    Keywords: Tridacna
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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  • 7
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    The MIT Press | The MIT Press
    Publication Date: 2022-02-21
    Description: Harnessing the power of software platforms: what executives and entrepreneurs must know about how to use this technology to transform industries and how to develop the strategies that will create value and drive profits. Software platforms are the invisible engines that have created, touched, or transformed nearly every major industry for the past quarter century. They power everything from mobile phones and automobile navigation systems to search engines and web portals. They have been the source of enormous value to consumers and helped some entrepreneurs build great fortunes. And they are likely to drive change that will dwarf the business and technology revolution we have seen to this point. Invisible Engines examines the business dynamics and strategies used by firms that recognize the transformative power unleashed by this new revolution—a revolution that will change both new and old industries. The authors argue that in order to understand the successes of software platforms, we must first understand their role as a technological meeting ground where application developers and end users converge. Apple, Microsoft, and Google, for example, charge developers little or nothing for using their platforms and make most of their money from end users; Sony PlayStation and other game consoles, by contrast, subsidize users and make more money from developers, who pay royalties for access to the code they need to write games. More applications attract more users, and more users attract more applications. And more applications and more users lead to more profits. Invisible Engines explores this story through the lens of the companies that have mastered this platform-balancing act. It offers detailed studies of the personal computer, video game console, personal digital assistant, smart mobile phone, and digital media software platform industries, focusing on the business decisions made by industry players to drive profits and stay a step ahead of the competition. Shorter discussions of Internet-based software platforms provide an important glimpse into a future in which the way we buy, pay, watch, listen, learn, and communicate will change forever. An electronic version of this book is available under a Creative Commons license.
    Keywords: Knowledge management ; Information technology: general topics ; bic Book Industry Communication::K Economics, finance, business & management::KJ Business & management::KJM Management & management techniques::KJMV Management of specific areas::KJMV3 Knowledge management ; bic Book Industry Communication::U Computing & information technology::UB Information technology: general issues
    Language: English
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  • 8
    Publication Date: 2023-10-05
    Description: The Brain Korea 21 Program (BK21), which seeks to make Korean research universities globally competitive and to produce more high-quality researchers in Korea, provides funding to graduate students and professors who belong to research groups at top universities. The authors develop quantitative and qualitative models to evaluate how well BK21 is fulfilling its goals and make suggestions for further stimulating Korean university research.
    Keywords: Education ; Management & Organizational Behavior ; bic Book Industry Communication::K Economics, finance, business & management::KJ Business & management::KJW Office & workplace::KJWX Working patterns & practices ; bic Book Industry Communication::J Society & social sciences::JN Education::JNF Educational strategies & policy
    Language: English
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  • 9
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Biochemistry 32 (1993), S. 1519-1527 
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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