More Like this

1. Unveiling mesophotic diversity in Hawai‘i: two new species in the genera Halopeltis and Leptofauchea (Rhodymeniales, Rhodophyta)

   https://doi.org/10.4490/algae.2022.37.10.31  

   Alvarado, Erika A.; Cabrera, Feresa P.; Paiano, Monica O.; Fumo, James T.; Spalding, Heather L.; Smith, Celia M.; Leonard, Jason C.; Lopes Jr., Keolohilani H.; Kosaki, Randall K.; Sherwood, Alison R. (December 2022, Algae)

   Two genera of the Rhodymeniales, Halopeltis and Leptofauchea, are here reported for the first time from the Hawaiian Islands and represent the deepest records for both genera. Molecular phylogenetic analyses of cytochrome oxidase subunit I (COI), rbcL, and large subunit ribosomal DNA (LSU) sequences for Hawaiian specimens of Leptofauchea revealed one well-supported clade of Hawaiian specimens and three additional lineages. One of these clades is described here as Leptofauchea huawelau sp. nov., and is thus far known only from mesophotic depths at Penguin Bank in the Main Hawaiian Islands. L. huawelau sp. nov. is up to 21 cm, and is the largest known species. An additional lineage identified in the LSU and rbcL analyses corresponds to the recently described L. lucida from Western Australia, and is a new record for Hawai‘i. Hawaiian Halopeltis formed a well-supported clade along with H. adnata from Korea, the recently described H. tanakae from mesophotic depths in Japan, and H. willisii from North Carolina, and is here described as Halopeltis nuahilihilia sp. nov. H. nuahilihilia sp. nov. has a distinctive morphology of narrow vegetative axes that harbor constrictions along their length. The current distribution of H. nuahilihilia includes mesophotic depths around W. Maui, W. Moloka‘i, and the island of Hawai‘i in the Main Hawaiian Islands. Few reproductive characters were observed because of the small number of specimens available; however, both species are distinct based on phylogeny and morphology. These descriptions further emphasize the Hawaiian mesophotic zone as a location harboring many undescribed species of marine macroalgae. 

   more » « less
2. Characterization of Elastic Modulus Across the (Al _1–x Sc _x )N System Using DFT and Substrate-Effect-Corrected Nanoindentation

   https://doi.org/10.1109/TUFFC.2018.2862240  

   Wu, Dong; Chen, Yachao; Manna, Sukriti; Talley, Kevin; Zakutayev, Andriy; Brennecka, Geoff L.; Ciobanu, Cristian V.; Constantine, Paul; Packard, Corinne E. (November 2018, IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control)
3. Cooperative Raman Spectroscopy for Real-Time In Vivo Nano-Biosensing

   https://doi.org/10.1109/TNB.2017.2749183  

   Guo, Hongzhi; Jornet, Josep Miquel; Gan, Qiaoqiang; Sun, Zhi (October 2017, IEEE Transactions on NanoBioscience)
4. Bomarea pastazensis (Alstroemeriaceae), an exceptionally small new species from the eastern Andean slopes of Ecuador

   https://doi.org/10.3897/phytokeys.235.110525  

   Clark, John L.; Fierro-Minda, Alisson; Exe, Nolan; Johnson, Mia; Tribble, Carrie M.; Jost, Lou (November 2023, PhytoKeys)

   Recent field research on the eastern slopes of the Andes resulted in the discovery of a new species ofBomareafrom the Cerro Candelaria Reserve in the Tungurahua province of Ecuador.Bomarea pastazensisis the second smallest species in the genus and differs from the smallest by the presence of glutinous trichomes on the ovary, glabrous sepals, and greenish-yellow petals with purple spots. Based on IUCN guidelines, a preliminary conservation status is assigned as Vulnerable (VU). 

   more » « less
5. Astronomical Cardiology: A Search For Heartbeat Stars Using $\text{Gaia}$ and $\text{TESS}$

   https://doi.org/10.33232/001c.142226  

   Callahan, Jowen; Rowan, D M; Kochanek, C S; Stanek, K Z (January 2025, The Open Journal of Astrophysics)

   Heartbeat stars are a subclass of binary stars with short periods, high eccentricities, and phase-folded light curves that resemble an electrocardiogram. We start from the $\text{𝐺𝑎𝑖𝑎}$catalogs of spectroscopic binaries and use $\text{𝑇𝐸𝑆𝑆}$photometry to identify 112 new heartbeat star systems. We fit their phase-folded light curves with an analytic model to measure their orbital periods, eccentricities, inclinations, and arguments of periastron. We then compare these orbital parameters to the $\text{𝐺𝑎𝑖𝑎}$spectroscopic orbital solution. Our periods and eccentricities are consistent with the $\text{𝐺𝑎𝑖𝑎}$solutions for 85 $\%$of the single-line spectroscopic binaries but only 20 $\%$of the double-line spectroscopic binaries. For the two double-line spectroscopic binary heartbeat stars with consistent orbits, we combine the $\text{𝑇𝐸𝑆𝑆}$phase-folded light curve and the $\text{𝐺𝑎𝑖𝑎}$velocity semi-amplitudes to measure the stellar masses and radii with $\text{𝙿𝙷𝙾𝙴𝙱𝙴}$. In a statistical analysis of the HB population, we find that non-giant heartbeat stars have evolved off the main sequence and that their fractional abundance rises rapidly with effective temperature. 

   more » « less