Effect of hexane treatment and uniaxial stretching on bending electricity of polyvinylidene fluoride (PVDF)

The effect of hexane treatment and uniaxial stretching in polyvinylidene fluoride (PVDF) film was studied. The quantity, β31, defined as the bending piezoelectric stress constant, was calculated. After hexane treatment and uniaxial stretching of the PVDF film, the value of β31 was 5.75 mV/m and 8.00 mV/m for draw ratio of 1.5 and 2.5 was recorded. Fourier transform Infra-red (FTIR) spectrophotometry was used for structural investigations.Key words: Polyvinylidene fluoride (PVDF), bending piezoelectric stress constant β31, Fourier Transform infra-red (FTIR) spectrophotometry, iodine doping, hexane treatment, uniaxial stretching

An investigation of the structure beneath Magadi area in southern Kenya rift using gravimetric data

Magadi area is located in the southern part of the Kenyan rift, an activecontinental rift that is part of the East African Rift system. Local seismic activity monitored previously around Lake Magadi revealed an earthquake cluster caused by swarm activity in the rift centre at shallow depths, which was probably triggered by magma movements. There was need for a follow-up to locate any body at depth with sufficient density contrast that may represent magmatic intrusions. Gravity measurements were carried out in 58 established stations and data from 52 other stations merged from existing coverage of previous measurements. Necessary corrections were applied to the gravity data and a Bouguer contour map prepared. Euler deconvolution technique was used to image depth to the causative bodies along selected profiles on the Bouguer anomaly map. Two  dimensional gravity forward models of the subsurface structure were generated by using Euler depth solutions in the start models. Among others, a unique body of density of 3.20 gcm-3 was modelled on the northern region near little Magadi at a depth of approximately 0.4 km. The location of the body coincides with the area where earthquake swarm occurs. Such a body of high density contrasts may be caused by mafic intrusions into the crust. Discontinuities in Euler solution cluster along the profiles indicated buried faults in the volcanic rift infill. The high seismicity may hence be associated to magma intrusions.Key words: Gravity, Bouguer anomaly, Euler Deconvolution, Keny

Spectral analysis of ground magnetic data in Magadi area, Southern Kenya rift

The area surrounding Lake Magadi in the southern Kenya rift is characterized by hot springs that issue from fractures distributed along the shores of the lake. Presence of earthquake swarms that cluster in northern margin of Lake Magadi strongly indicate magmatic activity in the area. This study was done as a follow-up to investigate depth to the heat source possibly causing high seismic activity and high heat flow in the area. A ground magnetic survey was conducted to investigate geothermal potential of the area and a magnetic anomaly contour map prepared. Spectral analysis involving determining power spectrum was applied to magnetic data along selected profiles cutting through discerned anomalies. Spectral analysis results suggest that the Curie-point isotherm depth under Magadi ranges from 5.20 km to 8.30 km. Estimated vertical temperature gradients along the profiles ranges from 111.53°C/km to 69.92°C/km. The hightemperature gradients and relatively shallow Curie point depths indicates high heat flow which suggests presence of a hot magmatic intrusion

Development of bending mode polymer piezoelectric bandage for bone fracture healing

No Abstract.Journal of Agriculture, Science and Technology Vol. 10 (1) 2008: pp. 94-10

Effect of Titanium Dioxide Dopping on Charge Trapping in Polystyrene Films

The charge storage properties of corona charged pure and TiO2 doped polystyrene (PS) films have been studied. Thermally stimulated charge decay and open circuit thermally stimulated charges were measured. A half-value charge decay temperature T1/2 ∼ 140oC is optimum at 3 wt % TiO2 doping. This implies that charge trapping predominantly occurs at deep traps in 3 wt % TiO2 doping. X-ray diffraction scanning method was employed to obtain structural information. Journal of Agriculture, Science and Technology Vol.3(1) 2001: 64-7

American Academy of Nursing Expert Panel consensus statement on nursing's roles in ensuring universal palliative care access.

The purpose of this consensus paper was to convene leaders and scholars from eight Expert Panels of the American Academy of Nursing and provide recommendations to advance nursing's roles and responsibility to ensure universal access to palliative care. Part I of this consensus paper herein provides the rationale and background to support the policy, education, research, and clinical practice recommendations put forward in Part II. On behalf of the Academy, the evidence-based recommendations will guide nurses, policy makers, government representatives, professional associations, and interdisciplinary and community partners to integrate palliative nursing services across health and social care settings. The consensus paper's 43 authors represent eight countries (Australia, Canada, England, Kenya, Lebanon, Liberia, South Africa, United States of America) and extensive international health experience, thus providing a global context for the subject matter. The authors recommend greater investments in palliative nursing education and nurse-led research, nurse engagement in policy making, enhanced intersectoral partnerships with nursing, and an increased profile and visibility of palliative nurses worldwide. By enacting these recommendations, nurses working in all settings can assume leading roles in delivering high-quality palliative care globally, particularly for minoritized, marginalized, and other at-risk populations