1,723,738 research outputs found
Linked collectors and determiners for: Lectotype designation, redescription, and synonymy of Homonyx cupreus Guérin-Méneville, 1839 (Coleoptera: Scarabaeidae: Rutelinae: Rutelini).
No full textNatural history specimen data linked to collectors and determiners held within, "Lectotype designation, redescription, and synonymy of Homonyx cupreus Guérin-Méneville, 1839 (Coleoptera: Scarabaeidae: Rutelinae: Rutelini)". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/737b6e54-3946-47e1-8830-c167730d6a71">https://bionomia.net/dataset/737b6e54-3946-47e1-8830-c167730d6a71</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/737b6e54-3946-47e1-8830-c167730d6a71">https://gbif.org/dataset/737b6e54-3946-47e1-8830-c167730d6a71</a>. Formatted as a Frictionless Data package
Linked collectors and determiners for: Gergithoides Schumacher, 1915 in Vietnam, with two new species, and taxonomic notes on the genus (Hemiptera: Fulgoromorpha: Issidae).
No full textNatural history specimen data linked to collectors and determiners held within, "Gergithoides Schumacher, 1915 in Vietnam, with two new species, and taxonomic notes on the genus (Hemiptera: Fulgoromorpha: Issidae)". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/6ab0c810-4a49-4a9a-8830-66e044e66255">https://bionomia.net/dataset/6ab0c810-4a49-4a9a-8830-66e044e66255</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/6ab0c810-4a49-4a9a-8830-66e044e66255">https://gbif.org/dataset/6ab0c810-4a49-4a9a-8830-66e044e66255</a>. Formatted as a Frictionless Data package
Linked collectors and determiners for: Academy of Natural Sciences Ichthyology Collection.
No full textNatural history specimen data linked to collectors and determiners held within, "Academy of Natural Sciences Ichthyology Collection". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/de22e531-395a-468b-8830-bd1a8ad04673">https://bionomia.net/dataset/de22e531-395a-468b-8830-bd1a8ad04673</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/de22e531-395a-468b-8830-bd1a8ad04673">https://gbif.org/dataset/de22e531-395a-468b-8830-bd1a8ad04673</a>. Formatted as a Frictionless Data package
Highly structured inner planetary system debris around the intermediate age sun-like star TYC 8830 410 1
Full text linkWe present a detailed characterization of the extremely dusty main-sequence star TYC 8830 410 1. This system hosts inner planetary system dust (T dust ≈ 300 K) with a fractional infrared luminosity of ∼1%. Mid-infrared spectroscopy reveals a strong, mildly crystalline solid-state emission feature. TYC 8830 410 1 (spectral type G9 V) has a 49.5″ separation M4-type companion comoving and co-distant with it, and we estimate a system age of ∼600 Myr. TYC 8830 410 1 also experiences “dipper”-like dimming events as detected by the All-Sky Automated Survey for Supernovae, Transiting Exoplanet Survey Satellite, and characterized in more detail with the Las Cumbres Observatory Global Telescope. These recurring eclipses suggest at least one roughly star-sized cloud of dust orbits the star in addition to assorted smaller dust structures. The extreme properties of the material orbiting TYC 8830 410 1 point to dramatic dust-production mechanisms that likely included something similar to the giant impact event thought to have formed the Earth–Moon system, although hundreds of millions of years after such processes are thought to have concluded in the solar system. TYC 8830 410 1 holds promise to deliver significant advances in our understanding of the origin, structure, and evolution of extremely dusty inner planetary systems
Linked collectors and determiners for: Gergithoides Schumacher, 1915 in Vietnam, with two new species, and taxonomic notes on the genus (Hemiptera: Fulgoromorpha: Issidae).
No full textNatural history specimen data linked to collectors and determiners held within, "Gergithoides Schumacher, 1915 in Vietnam, with two new species, and taxonomic notes on the genus (Hemiptera: Fulgoromorpha: Issidae)". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/6ab0c810-4a49-4a9a-8830-66e044e66255">https://bionomia.net/dataset/6ab0c810-4a49-4a9a-8830-66e044e66255</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/6ab0c810-4a49-4a9a-8830-66e044e66255">https://gbif.org/dataset/6ab0c810-4a49-4a9a-8830-66e044e66255</a>. Formatted as a Frictionless Data package
細胞内膜の構成酵素に関する研究
Full text link研究課題/領域番号:X44080------8830, 研究期間(年度):1969出典：研究課題「細胞内膜の構成酵素に関する研究」課題番号 X44080------8830
（KAKEN：科学研究費助成事業データベース（国立情報学研究所））
（https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-X44080------8830/）を加工して作成金沢大学薬学部research repor
Highly Structured Inner Planetary System Debris around the Intermediate Age Sun-like Star TYC 8830 410 1
No full textWe present a detailed characterization of the extremely dusty main-sequence star TYC 8830 410 1. This system hosts inner planetary system dust (Tdust ≈ 300 K) with a fractional infrared luminosity of ∼1%. Mid-infrared spectroscopy reveals a strong, mildly crystalline solid-state emission feature. TYC 8830 410 1 (spectral type G9 V) has a 49.5″ separation M4-type companion comoving and co-distant with it, and we estimate a system age of ∼600 Myr. TYC 8830 410 1 also experiences “dipper”-like dimming events as detected by the All-Sky Automated Survey for Supernovae, Transiting Exoplanet Survey Satellite, and characterized in more detail with the Las Cumbres Observatory Global Telescope. These recurring eclipses suggest at least one roughly star-sized cloud of dust orbits the star in addition to assorted smaller dust structures. The extreme properties of the material orbiting TYC 8830 410 1 point to dramatic dust-production mechanisms that likely included something similar to the giant impact event thought to have formed the Earth–Moon system, although hundreds of millions of years after such processes are thought to have concluded in the solar system. TYC 8830 410 1 holds promise to deliver significant advances in our understanding of the origin, structure, and evolution of extremely dusty inner planetary systems
Dynamical Chaos and Disappearing Dust in the TYC 8830 410 1 Planetary System
Full text linkTYC 8830 410 1 is a very dusty, intermediate-age, main sequence, Sun-like star. Optical monitoring of the star over several years has identified a transiting body with a period near 167 days that blocks >50% of the host star's optical light in each transit event, but radial velocity monitoring limits any orbiting companion to planet masses. We present a suite of ground- and space-based observations that have been used to characterize the star and its orbiting bodies, resulting in several outstanding enigmas. Chief among them are what appears to be transit timing variations in the arrival of the deep transit events, a dust grain distribution skewed to sub-micron sizes, significant radial velocity jitter that is not due to stellar activity, and what appears to be actively disappearing dust over the 2023-2024 timeframe. We explore an interpretation where TYC 8830 410 1 experienced a dramatic planetary system instability that has driven two major planets to collide
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
- …
