Can a functional postural exercise improve performance in the cranio-cervical flexion test? – A preliminary study

2012 ◽  
Vol 17 (3) ◽  
pp. 219-224 ◽  
Author(s):  
Alexi Beer ◽  
Julia Treleaven ◽  
Gwendolen Jull
Keyword(s):  
Improve Performance ◽  
Preliminary Study ◽  
Postural Exercise ◽  
Flexion Test

A Preliminary Study Examining Novel Training Paradigms for Vigilance

2017 ◽  
Vol 61 (1) ◽  
pp. 1509-1513
Author(s):  
Nicholas W. Fraulini ◽  
Monica A. Perez ◽  
Teresa L. Perez ◽  
Alexa L. Fistel ◽  
James L. Szalma
Keyword(s):  
Research Question ◽  
Time On Task ◽  
Primary Research ◽  
Vigilance Decrement ◽  
Improve Performance ◽  
The Future ◽  
Preliminary Study ◽  
Higher Sensitivity

Training for vigilance has been a primary research question for over 70 years. Specifically, researchers have fought to lessen the effects of the vigilance decrement, or the typical decline in performance as time on task increases. In the present study, we examine two forms of training for vigilance: practice and knowledge of result (KR). We propose that providing observers with either practice, KR, or a combination of the two during training will improve performance on a transfer vigil. Our results showed observers receiving practice displayed higher sensitivity and increased conservatism during training, as well as a trend toward higher sensitivity during transfer. These results show the benefits of providing observers practice, which include their performance on a transfer vigil as well as the efficiency of the training itself. We discuss the implications of these findings and how they may impact training for vigilance in the future.

A Preliminary Study on Blade Sweep to Improve Performance of an OWC Turbine

2020 ◽  
pp. 141-149
Author(s):  
Sidi Mohamed Karim Benslimane ◽  
Antonio Mañino Ferrando ◽  
María Clavero Gilabert ◽  
Ali Nemdili
Keyword(s):  
Improve Performance ◽  
Preliminary Study

scholarly journals Preliminary Study on Various Shaped Models of Delivery valve in Hydraulic Ram Pump – Experimental Results

2020 ◽  
Vol 5 (1) ◽  
pp. 43
Author(s):  
Made Suarda ◽  
I Gusti Bagus wijaya Kusuma ◽  
Made Sucipta ◽  
Ainul Ghurri
Keyword(s):  
Fluid Flow ◽  
Water Supply ◽  
Sphere Model ◽  
Improve Performance ◽  
Pump Performance ◽  
The Public ◽  
Flow Through ◽  
Preliminary Study ◽  
Valve Model ◽  
Water Supply Services

Four shaped models of delivery valve had been investigated and compared to improve performance of a hydraulic ram. Hydraulic ram pumps have been constructed and operated. Most of them built locally using steel pipe fittings that commercially accessible in the market rather than factory-made one. These have assisted inhabitants in rural or hilly area where water sources available for water supply services or irrigations. However, the major problem challenged by the public was on designing and repairing of the impulse and delivery valves of the pumps. Performance of the pumps are affected predominantly by the both valves. One characteristic of the valves is their shape. Considered on the characteristics of the fluid flow through surface of plate and sphere object are different on the pattern and losses. Therefore, investigation is necessitated to find a proper shape of the delivery valve for enhancing the performance of the pump. In this research four valve models were experimented to assess the hydraulic ram pump performance on varies delivery heads. The results show that the sphere model of the delivery valve offered the best efficiency, then followed by the membrane, the half-sphere and the flat delivery valve models. However, the rounded model: sphere and half-sphere delivery valve model were facing obstructions in implementation for a high delivery head.

The Ultrastructure of Metastatic Human Mammary Carcinoma After Prolonged Estrogen Therapy

1967 ◽  
Vol 25 ◽  
pp. 180-181
Author(s):  
John H.L. Watson ◽  
John L. Swedo ◽  
R.W. Talley
Keyword(s):  
Mammary Carcinoma ◽  
Osmium Tetroxide ◽  
Estrogen Therapy ◽  
Ultrastructural Level ◽  
Uranyl Acetate ◽  
Human Mammary Carcinoma ◽  
Surgical Biopsy ◽  
Lead Hydroxide ◽  
Preliminary Study ◽  
Hormonal Therapies

A preliminary study of human mammary carcinoma on the ultrastructural level is reported for a metastatic, subcutaneous nodule, obtained as a surgical biopsy. The patient's tumor had responded favorably to a series of hormonal therapies, including androgens, estrogens, progestins, and corticoids for recurring nodules over eight years. The pertinent nodule was removed from the region of the gluteal maximus, two weeks following stilbestrol therapy. It was about 1.5 cms in diameter, and was located within the dermis. Pieces from it were fixed immediately in cold fixatives: phosphate buffered osmium tetroxide, glutaraldehyde, and paraformaldehyde. Embedment in each case was in Vestopal W. Contrasting was done with combinations of uranyl acetate and lead hydroxide.

Fine structure of early degenerating myofibers in the tibialis anterior of young ‘MDX’ mouse

1988 ◽  
Vol 46 ◽  
pp. 322-323
Author(s):  
H.D. Geissinger ◽  
C.K. McDonald-Taylor
Keyword(s):  
Fine Structure ◽  
Muscle Regeneration ◽  
Tibialis Anterior ◽  
Genetic Defect ◽  
Mdx Mouse ◽  
Mdx Mice ◽  
Histopathological Changes ◽  
Electron Microscopic ◽  
Dystrophic Mouse ◽  
Preliminary Study

A new strain of mice, which had arisen by mutation from a dystrophic mouse colony was designated ‘mdx’, because the genetic defect, which manifests itself in brief periods of muscle destruction followed by episodes of muscle regeneration appears to be X-linked. Further studies of histopathological changes in muscle from ‘mdx’ mice at the light microscopic or electron microscopic levels have been published, but only one preliminary study has been on the tibialis anterior (TA) of ‘mdx’ mice less than four weeks old. Lesions in the ‘mdx’ mice vary between different muscles, and centronucleation of fibers in all muscles studied so far appears to be especially prominent in older mice. Lesions in young ‘mdx’ mice have not been studied extensively, and the results appear to be at variance with one another. The degenerative and regenerative aspects of the lesions in the TA of 23 to 26-day-old ‘mdx’ mice appear to vary quantitatively.

Ultrastructural observations of the aorta of calves implanted with a mechanical left ventricular assist device

1990 ◽  
Vol 48 (3) ◽  
pp. 834-835
Author(s):  
J P Cassella ◽  
V Salih ◽  
T R Graham
Keyword(s):  
Left Ventricular Assist Device ◽  
Ventricular Assist Device ◽  
Left Ventricular ◽  
Aortic Tissue ◽  
Assist Device ◽  
Ventricular Assist ◽  
Transmission Electron ◽  
Left Ventricular Assist ◽  
Preliminary Study

Left ventricular assist systems are being developed for eventual long term or permanent implantation as an alternative to heart transplantation in patients unsuitable for or denied the transplant option. Evaluation of the effects of these devices upon normal physiology is required. A preliminary study was conducted to evaluate the morphology of aortic tissue from calves implanted with a pneumatic Left Ventricular Assist device-LVAD. Two 3 month old heifer calves (calf 1 and calf 2) were electively explanted after 128 days and 47 days respectively. Descending thoracic aortic tissue from both animals was removed immediately post mortem and placed into karnovsky’s fixative. The tissue was subsequently processed for transmission electron microscopy (TEM). Some aortic tissue was fixed in neutral buffered formalin and processed for routine light microscopy.

A preliminary study on the potential of front face fluorescence spectroscopy for the discrimination of Moroccan virgin olive oils and the prediction of their quality

2021 ◽  
Author(s):  
Hicham Zaroual ◽  
El Mestafa El Hadrami ◽  
Romdhane Karoui
Keyword(s):  
Fluorescence Spectroscopy ◽  
Olive Oil ◽  
Virgin Olive Oil ◽  
Front Face ◽  
Virgin Olive Oils ◽  
Olive Oils ◽  
Preliminary Study

This study examines the feasibility of using front face fluorescence spectroscopy (FFFS) to authenticate 41 virgin olive oil (VOO) samples collected from 5 regions in Morocco during 2 consecutive crop seasons.

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