Results 131 to 140 of about 1,210,302 (292)

Lifting the Veil: The Face of TFP in an Indian Rail Mill [PDF]

open access: yes
We use a proprietary data set on the floor-level operations at the Bhilai Rail and Structural Mill (RSM) in India to understand how output rose sharply in response to competitive pressures.
Kala M. Krishna   +3 more
core  

Application of Raman and Photoluminescence Spectroscopy to MgO‐C Refractories

open access: yesAdvanced Engineering Materials, EarlyView.
Visible to near infrared luminescence of MgO is studied on MgO‐C bricks and nominally pure MgO powder, with focus on two similar sharp high‐intensity signals, at 699 and 871 nm, each surrounded by symmetrical sidebands. The nature of these sidebands is investigated by temperature‐dependent spectroscopic measurements, confirming phonon involvement by ...
Julia Richter   +5 more
wiley   +1 more source

Validity of the SF-36 Health Survey as an outcome measure for trials in people with spinal cord injury [PDF]

open access: yes
The SF-36 was interviewer-administered to 305 subjects at recruitment. Feasibility, content validity and internal consistency were assessed. We tested a priori hypotheses about discriminative, convergent and divergent validity.
Bonne Lee   +4 more
core  

On the Influence of Antioxidants and Recycled MgO–C Source Material on the Mechanical Properties of Carbon‐Bonded Magnesia Refractories

open access: yesAdvanced Engineering Materials, EarlyView.
The presented study focuses on the fracture behaviour of carbon‐bonded magnesia MgO–C refractories, where environmentally friendly fructose, collagen and lignin serve as temporary binding agents. The partial substitution of the source material with recycled MgO–C reduces the fracture resistance, which can be counteracted by the additional introduction ...
Marc Neumann   +6 more
wiley   +1 more source

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

open access: yesAdvanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm   +5 more
wiley   +1 more source

Measurements of acoustic sources in motion [PDF]

open access: yes
Results of the far-field pressures measured from three different types of moving sources are presented. These acoustic sources consist of a point monopole, a small model jet, and an aircraft.
Maestrello, L., Norum, T. D.
core   +1 more source

Investigation of Thermo‐Chemical Processes in Commercial MgO‐C Refractory Bricks With and Without MgO‐C Recyclate at Elevated Temperatures

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates thermo‐chemical processes during high‐temperature testing of two commercial MgO‐C brick grades, one containing 47.5 wt.% MgO‐C recyclate. Using ETV, DTA/TG‐MS, XRD, and SEM/EDS/EBSD, mechanisms such as carbothermal reduction of magnesia, impurity incorporation into the secondary MgO surface layer, and calcium‐rich phase ...
Alexander Schramm   +6 more
wiley   +1 more source

Investigation of Pelvic Floor Function in Women with and without Primary Dysmenorrhea

open access: yesArtuklu Health
Introduction: This study investigated the relationship between primary dysmenorrhea and pelvic floor function.Methods: A total of 145 women aged 18 to 35 participated in this study. Participants provided demographic information via questionnaire.
Özden Baskan   +3 more
doaj   +1 more source

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