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174 Result(s)
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Article
Quantum spin nematic phase in a square-lattice iridate
Spin nematic is a magnetic analogue of classical liquid crystals, a fourth state of matter exhibiting characteristics of both liquid and solid1,2. Particularly intriguing is a valence-bond spin nematic3–5, in whi...
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Article
Q-switched operation of dual-cavity Nd:YAG lasers
We report Q-switched operation of a dual-cavity Nd:YAG laser with a fundamental Gaussian TEM00 mode, a first-order Laguerre–Gaussian mode, or a multimode, which can be selected simply by adjusting the apertures i...
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Article
Welding Characteristics of Dissimilar Welding of SM45C and STS304 Using Nd:YAG Laser
The Nd:YAG laser welding process is one of the most advanced manufacturing technologies and has increased the automation and flexibility of an industry. Laser welding of dissimilar metals has been widely used ...
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Article
Postoperative Pneumonia and Aspiration Pneumonia Following Elderly Hip Fractures
The present study aimed to investigate the incidence of and risk factors for postoperative pneumonia and aspiration pneumonia after hip fracture surgery.
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Article
The transport–structural correspondence across the nematic phase transition probed by elasto X-ray diffraction
Electronic nematicity in iron pnictide materials is coupled to both the lattice and the conducting electrons, which allows both structural and transport observables to probe nematic fluctuations and the order ...
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Article
Effect of dipeptidyl peptidase IV inhibitors, thiazolidinedione, and sulfonylurea on osteoporosis in patients with type 2 diabetes: population-based cohort study
The population-based cohort study used the Korean National Health Insurance claims database to evaluate the effect of anti-diabetic drugs on osteoporosis. The use of DPP-IV inhibitors does not increase the ris...
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Article
Population-based, three-dimensional analysis of age- and sex-related femur shaft geometry differences
This study deals with differences of femoral geometric focus on the bowing and width. Analysis using three-dimensional skeletonization showed increase of femoral bowing and femur width over life (more in women...
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Article
High-power extra-large-mode-area Yb-doped fiber laser and amplifier at 978 nm
We report an efficient, high-power operation of a fiber laser and a power amplifier at ~ 978 nm incorporating an extra-large-mode-area (XLMA) triple-clad Yb-doped fiber. A simple numerical calculation for the ...
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Article
A Study on the Improvement of Etch Uniformity in an Ion Beam Etcher with a Magnetized Inductively Coupled Plasma Source
A magnetized inductively coupled plasma ion beam etcher (MICP-IBE) was designed by employing electromagnets around the etcher (IBE). A magnetic field can be set up such that the magnitude of the magnetic flux ...
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Article
Enhancement of charge breeding efficiency for rare isotope beam with the control of magnetic field profile and electron beam energy in EBIS
The magnetic field in the ion trap of electron beam ion source (EBIS) determines the current density of electron beam and thus the depth of trap potential, which affects the charge breeding efficiency to desir...
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Article
Open AccessControlling spin current polarization through non-collinear antiferromagnetism
The interconversion of charge and spin currents via spin-Hall effect is essential for spintronics. Energy-efficient and deterministic switching of magnetization can be achieved when spin polarizations of these...
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Article
Letter to the editor about the article “Different surgical outcomes in a patient with bilateral atypical femoral fracture related to bisphosphonate use with or without teriparatide treatment”
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Article
Open AccessEmergence of complexity in poetry: “Soleils couchants” by Verlaine
This work investigates emergence of complexity in poetry based on the analogy between the poetics of evocation and the physics of complex systems. For this purpose, we first discuss key concepts of the physics...
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Article
Open AccessPublisher Correction: Strongly-coupled quantum critical point in an all-in-all-out antiferromagnet
The original PDF version of the Article contained an error in the last sentence of the author affiliation information, which incorrectly read ‘Correspondence and requests for materials should be addressed to T...
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Article
Open AccessStrongly-coupled quantum critical point in an all-in-all-out antiferromagnet
Dimensionality and symmetry play deterministic roles in the laws of Nature. They are important tools to characterize and understand quantum phase transitions, especially in the limit of strong correlations bet...
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Article
Submacular hemorrhage and grape-like polyp clusters: factors associated with reactivation of the lesion in polypoidal choroidal vasculopathy
The purpose of this study is to investigate the factors associated with reactivation of the lesion during the first year in patients with polypoidal choroidal vasculopathy (PCV) treated with intravitreal ranib...
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Article
Acute endophthalmitis after cataract surgery: 164 consecutive cases treated at a referral center in South Korea
To identify prognostic factors in patients referred with endophthalmitis after cataract surgery, and to evaluate the efficacy of primary vitrectomy as an initial management.
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Article
Atypical subtrochanteric fractures in Korean hip fracture study
In Korean, atypical subtrochanteric fractures (ASF) were rare. Higher BMI and use of bisphosphonate were significant risk factors of ASF.
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Article
Efficacy and safety of a newly developed polylactic acid microsphere as an injectable bulking agent for penile augmentation: 18-months follow-up
Polylactic acid (PLA) fillers are widely used for cosmetic volume augmentation. But, no study has evaluated the use of PLA filler in penile augmentation (PA No. 4). We evaluated the efficacy and safety of a ne...
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Article
Three-dimensional imaging of dislocation dynamics during the hydriding phase transformation
Crystallographic imperfections significantly alter material properties and their response to external stimuli, including solute-induced phase transformations. Despite recent progress in imaging defects using e...