Results 111 to 120 of about 1,532,155 (277)

A Broadband X-Ray Investigation of Fast-spinning Intermediate Polar CTCV J2056–3014

open access: yesThe Astrophysical Journal
We report on XMM-Newton, NuSTAR, and NICER X-ray observations of CTCV J2056–3014, a cataclysmic variable (CV) with one of the fastest-spinning white dwarfs (WDs) at P = 29.6 s.
Ciro Salcedo   +7 more
doaj   +1 more source

Palmae novae columbianae [PDF]

open access: yes
PALMAE NOVAE COLUMBIANAE Palmae novae columbianae ( - ) Cover ( - ) Text (665) Abb.: Tafel III ([1]

core  

Influence of Direct Saponification Conditions on Sterol Yield and Composition of the Unsaponifiable Fraction of the Microalga Isochrysis galbana and the Seaweed Ascophyllum nodosum

open access: yesJournal of the American Oil Chemists' Society, EarlyView.
ABSTRACT Saponification is a key step for recovering the unsaponifiable fraction (USF) of lipids, which contains bioactive sterols, tocopherols, and carotenoids. This study optimized direct saponification conditions (50–300 g L−1 KOH; 60°C–100°C) to recover sterol‐rich USFs from the microalga Isochrysis galbana and the brown seaweed Ascophyllum nodosum,
Mina Zareie, Suzanne M. Budge
wiley   +1 more source

Design and Performance of a High‐Efficiency Inhibitor: Synergistic Effect of Modified Chitosan and Boron Nitride Nanosheets on Steel Protection

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Metal corrosion causes significant economic losses and safety hazards, underscoring the urgent need for effective, environmentally friendly corrosion inhibitors. In this study, an organic–inorganic composite inhibitor, chitosan–glucose–BN (CS–GL–BN) was developed to protect Q235 mild steel in a 3.5‐wt% NaCl solution.
Shanjun Xu   +4 more
wiley   +1 more source

Electrospun PVDF/BaTiO3‐TiO2 Nanocomposite Yarns for Piezoelectric Energy Harvesting

open access: yesJournal of Applied Polymer Science, EarlyView.
Hybrid BTO‐TiO2 nanofillers integrated into electrospun PVDF fibers significantly enhance β‐phase formation and piezoelectric performance. The resulting nanocomposite fibers and twisted yarns generate high voltage and power output under mechanical stimulation.
Swathi Yempally   +4 more
wiley   +1 more source

Two‐Dimensional van der Waals Antiferromagnets: Fabrication, Probes, Control, and Applications

open access: yesAdvanced Physics Research, EarlyView.
Two‐dimensional van der Waals antiferromagnets are emerging as versatile platforms for spintronic, optoelectronic, and quantum devices. This review summarizes recent progress in their fabrication, magnetic characterization, fields, interfacial engineering, chemical modification, and representative applications.
Huangyu Wu   +10 more
wiley   +1 more source

Recurrent Novae in M31 [PDF]

open access: yes
The reported positions of 964 suspected nova eruptions in M31 recorded through the end of calendar year 2013 have been compared in order to identify recurrent nova candidates.
Hornoch, K   +10 more
core   +3 more sources

Understanding the spacing of placodes in the eye: A comparative study across age and species

open access: yesThe Anatomical Record, EarlyView.
Abstract The conjunctival placodes of the avian eye form in an intriguing and conserved sequence in a circular annulus around the cornea. These 13–16 placodes develop into papillae that are essential for inducing underlying intramembranous flat bones, known as scleral ossicles, which form an important part of the ocular skeleton.
Florence Joseph   +1 more
wiley   +1 more source

Clade‐wide morphological and functional variation of the sauropsid columella

open access: yesThe Anatomical Record, EarlyView.
Abstract The columella (=stapes) is the middle ear bone of reptiles that transmits vibrations from the environment to the inner ear. It has been shown to exhibit extensive interspecific morphological disparity in several clades; however, its morphological variation and associated functional consequences remain poorly described.
John Peacock   +4 more
wiley   +1 more source

Печати на I италийски и XI Клавдиев легион от района на Ловеч

open access: yesПриноси към българската археология, 2018
Approximately four years ago, a workshop for antiquities forgery was discovered near the village of Lesh­nitsa, Lovech region. A significant number of bricks and flat roof-tiles (tegulae) (approximately 70 in number) was found all bearing the stamps of ...
Rumen T. Ivanov
doaj  

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