Results 11 to 20 of about 938,617 (287)

Effect of Boron and Titanium Addition on the Hot Ductility of Low-Carbon Nb-Containing Steel

open access: yesHigh Temperature Materials and Processes, 2015
The effect of boron and titanium addition on the hot ductility of Nb-containing steel was investigated using hot tensile tests. The fracture surface and the quenched longitudinal microstructure were examined by optical microscopy (OM), scanning electron ...
Liu Wei-Jian   +3 more
doaj   +1 more source

Hetero-Type Benzannulation Leading to Substituted Benzothio-Phenes

open access: yesMolecules, 2021
TiCl4 (or SnCl4)-promoted hetero-type benzannulation reactions using various (2,2-dichlorocyclopropyl)(thiophen-2-yl)methanols proceeded smoothly to produce uniquely substituted 4-chlorobenzothiophenes (five examples).
Taro Kono   +4 more
doaj   +1 more source

A Symmetry Evaluation Method, Using Elevation Angle, for Lower Limb Movement Patterns during Sitting-to-Standing

open access: yesApplied Sciences, 2022
In this paper, we propose a method that uses the femoral and tibial elevation angles to quantitatively evaluate the symmetry of lower limb movement during the transition from a sitting position to a standing position.
Kensuke Nakamura, Norihiko Saga
doaj   +1 more source

Determinants of Peak Oxygen Uptake at Each Stage of Renal Dysfunction in Patients with Heart Disease

open access: yesReviews in Cardiovascular Medicine, 2022
Background: Identifying the causes of low peak oxygen uptake (peak V̇O2) in heart disease patients with renal dysfunction is necessary for prognostic improvement strategies.
Asami Ogura   +9 more
doaj   +1 more source

Generation of iPS-derived model cells for analyses of hair shaft differentiation

open access: yesBioTechniques, 2017
Biological evaluation of hair growth/differentiation activity in vitro has been a formidable challenge, primarily due to the lack of relevant model cell systems.
Takumi Kido   +4 more
doaj   +1 more source

Constraint of Base Pairing on HDV Genome Evolution

open access: yesViruses, 2021
The hepatitis delta virus is a single-stranded circular RNA virus, which is characterized by high self-complementarity. About 70% of the genome sequences can form base-pairs with internal nucleotides.
Saki Nagata   +2 more
doaj   +1 more source

Citizen Science 2.0 : Data Management Principles to Harness the Power of the Crowd [PDF]

open access: yes, 2011
Citizen science refers to voluntary participation by the general public in scientific endeavors. Although citizen science has a long tradition, the rise of online communities and user-generated web content has the potential to greatly expand its scope ...
A. Flanagin   +31 more
core   +1 more source

Asymmetric Total Syntheses of Two 3-Acyl-5,6- dihydro-2H-pyrones: (R)-Podoblastin-S and (R)- Lachnelluloic Acid with Verification of the Absolute Configuration of (−)-Lachnelluloic Acid

open access: yesMolecules, 2017
Expedient asymmetric total syntheses of both (R)-podoblastin-S and (R)-lachnelluloic acid, representative of natural 3-acyl-5,6-dihydro-2H-pyran-2-ones, were performed. Compared with the reported total synthesis of (R)-podoblastin-S (14 steps, overall 5%
Tetsuya Fujiwara   +4 more
doaj   +1 more source

Co-existence of malnutrition and sarcopenia and its related factors in a long-term nursing care facility: A cross-sectional study

open access: yesHeliyon, 2023
Objectives: Malnutrition and sarcopenia often co-exist in older patients. This condition, called co-MS, shows a worse prognosis than either condition alone but is often overlooked and undertreated.
Noriko Bando   +11 more
doaj   +1 more source

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