scholarly journals A critical assessment of factors influencing the perceived professional benefit of internet nurses

Author(s):  
Xiaoxu Li ◽  
Yichang Zhu ◽  
Bo Yang ◽  
Bing Wu ◽  
Meixiang Wang ◽  
...  
Author(s):  
Franziska Lechleitner ◽  
Sahar Amirnezhad-Mozhdehi ◽  
Andrea Columbu ◽  
Laia Comas-Bru ◽  
Inga Labuhn ◽  
...  

Western Europe is the region with the highest density of published speleothem δ18O (δ18Ospel) records worldwide. Here we review these records in light of the recent publication of the Speleothem Isotopes Synthesis and Analysis (SISAL) database [1]. We investigate how representative the spatial and temporal distribution of the available records is for climate in Western Europe, and review potential sites and strategies for future studies. We show that spatial trends in precipitation δ18O are mirrored in the speleothems, providing means to better constrain the factors influencing δ18Ospel at a specific location. Coherent regional δ18Ospel trends are found over stadial-interstadial transitions of the last glacial, especially in high altitude Alpine records. Over the Holocene, regional trends are less clearly expressed, due to lower signal-to-noise ratios in δ18Ospel, but can potentially be extracted with the use of statistical methods. Overall, this first assessment highlights the potential of the European region for speleothem palaeoclimate reconstruction, while underpinning the importance of knowledge of local factors for a correct interpretation of δ18Ospel.


Quaternary ◽  
2018 ◽  
Vol 1 (3) ◽  
pp. 30 ◽  
Author(s):  
Franziska A. Lechleitner ◽  
Sahar Amirnezhad-Mozhdehi ◽  
Andrea Columbu ◽  
Laia Comas-Bru ◽  
Inga Labuhn ◽  
...  

Western Europe is the region with the highest density of published speleothem δ18O (δ18Ospel) records worldwide. Here, we review these records in light of the recent publication of the Speleothem Isotopes Synthesis and AnaLysis (SISAL) database. We investigate how representative the spatial and temporal distribution of the available records is for climate in Western Europe and review potential sites and strategies for future studies. We show that spatial trends in precipitation δ18O are mirrored in the speleothems, providing means to better constrain the factors influencing δ18Ospel at a specific location. Coherent regional δ18Ospel trends are found over stadial-interstadial transitions of the last glacial, especially in high altitude Alpine records, where this has been attributed to a strong temperature control of δ18Ospel. During the Holocene, regional trends are less clearly expressed, due to lower signal-to-noise ratios in δ18Ospel, but can potentially be extracted with the use of statistical methods. This first assessment highlights the potential of the European region for speleothem palaeoclimate reconstruction, while underpinning the importance of knowing local factors for a correct interpretation of δ18Ospel.


Author(s):  
O. T. Damba ◽  
I. Egyir ◽  
H. Adam

To ensure an efficient marketing with attractive profit margins in supply chains, factors influencing relationship choice between farmers and buyers require critical assessment. Choice of marketing relationship is the bane of most agricultural commodity supply chains in Northern Ghana.  The type of relationship agreed between farmers and buyers determines the form of delivery of a commodity. Buyers identified included retailers, itinerant traders and wholesalers. Identified marketing relationship was either on contract or spot buying with access to credit, membership to farmer association, experience and price as drivers of marketing relationship. In terms of marketing relationships, 57% of the farmers’ commodities are based on agreed contract while 43% commodities are without any binding contract. Age, price, access to credit, membership of farmer association, education and farmers’ experience are the factors influencing contracting or otherwise in established commodity supply chain in Northern Ghana. Soybean production and utilization has the potential to draw the youth into agriculture and government and private partners should intervene with the commercialization supply chains with strong contract relationships in the supply chain. 


Author(s):  
Julie A. Martini ◽  
Robert H. Doremus

Tracy and Doremus have demonstrated chemical bonding between bone and hydroxylapatite with transmission electron microscopy. Now researchers ponder how to improve upon this bond in turn improving the life expectancy and biocompatibility of implantable orthopedic devices.This report focuses on a study of the- chemical influences on the interfacial integrity and strength. Pure hydroxylapatite (HAP), magnesium doped HAP, strontium doped HAP, bioglass and medical grade titanium cylinders were implanted into the tibial cortices of New Zealand white rabbits. After 12 weeks, the implants were retrieved for a scanning electron microscopy study coupled with energy dispersive spectroscopy.Following sacrifice and careful retrieval, the samples were dehydrated through a graduated series starting with 50% ethanol and continuing through 60, 70, 80, 90, 95, and 100% ethanol over a period of two days. The samples were embedded in LR White. Again a graduated series was used with solutions of 50, 75 and 100% LR White diluted in ethanol.


1965 ◽  
Vol 8 (4) ◽  
pp. 323-347
Author(s):  
Robert Goldstein ◽  
Benjamin RosenblÜt

Electrodermal and electroencephalic responsivity to sound and to light was studied in 96 normal-hearing adults in three separate sessions. The subjects were subdivided into equal groups of white men, white women, colored men, and colored women. A 1 000 cps pure tone was the conditioned stimulus in two sessions and white light was used in a third session. Heat was the unconditioned stimulus in all sessions. Previously, an inverse relation had been found in white men between the prominence of alpha rhythm in the EEG and the ease with which electrodermal responses could be elicited. This relation did not hold true for white women. The main purpose of the present study was to answer the following questions: (1) are the previous findings on white subjects applicable to colored subjects? (2) are subjects who are most (or least) responsive electrophysiologically on one day equally responsive (or unresponsive) on another day? and (3) are subjects who are most (or least) responsive to sound equally responsive (or unresponsive) to light? In general, each question was answered affirmatively. Other factors influencing responsivity were also studied.


1950 ◽  
Vol 16 (1) ◽  
pp. 194-210 ◽  
Author(s):  
Frederick W. Hoffbauer ◽  
Jesse L. Bollman ◽  
John L. Grindlay

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