The aim of this work is to investigate the structural, thermal and electrical properties of Zn doped
Li4SiO4 synthesized by a sol gel method. The formation of the compound is confirmed by X-ray
diffraction study. Thermal properties of the compounds are measured using DSC analysis while the
electrical characteristics are investigated by impedance spectroscopy. The introduction of zinc ions
considerably raises the conductivity and improves thermal stability of the parent compound Li4SiO4.
The compound of Li3.88Zn0.06SiO4 gives a maximum value of 3.2 x 10-5 S cm-1 at room temperature
and 1.08 x 10-3 S cm-1 at 500 oC. The charge carrier concentration, mobile ion concentration and ion
hopping rate are calculated by fitting the conductance spectra to power law variation, σac (ω) = σo +
Aωα. The charge carrier concentration and mobile ion concentration are found to be constant over the
temperature range from 303 K to 773 K while mobility of ion increases with temperature implying that
the increase in conductivity with temperature is due to increase in ion mobility. The transference
number corresponding to Li+ ion transport determined by means of Bruce and Vincent technique
shows that majority charge carriers in the compound are Li+ ions.
High incidence and Treatment of Flexor Carpi Radialis Tendinitis after Trapeziectomy and Abductor Pollicis Longus Suspensionplasty for Basal Joint Arthritis
We reviewed the incidence and treatment of flexor carpi radialis tendinitis in 77 patients (81 thumbs) who
had trapeziectomy and abductor pollicis longus suspensionplasty for thumb carpometacarpal joint arthritis.
Eighteen patients, 20 wrists (25%) had flexor carpi radialis tendinitis. The onset was 2–10 months (mean 4.7)
after surgery. Two cases had preceding trauma. Eight cases (40%) responded to splinting and steroid injection.
Ten patients, 12 wrists (60%) underwent surgery after failing non-operative treatment. Eleven wrists had
frayed or partially torn flexor carpi radialis tendon and one had a complete tendon rupture with pseudotendon
formation. Flexor carpi radialis tenotomy and pseudotendon excision were performed. All operated patients
obtained good pain relief initially post-operatively. However, the pain recurred in two patients after 8 months.
One required a local steroid injection for localized tenderness at the site of the proximal tendon stump. The
other patient required a revision operation for scaphotrapezoid impingement. Both obtained complete pain
relief. Our study has shown a high incidence of flexor carpi radialis tendinitis following trapeziectomy and
abductor pollicis longus suspensionplasty. Patients should be warned about this potential complication.
Does Criticism Overcome the Praises of Journal Impact Factor?
Journal impact factor (IF) as a gauge of influence and impact of a particular journal comparing with other journals in the same area of research, reports the mean number of citations to the published articles in particular journal. Although, IF attracts more attention and being used more frequently than other measures, it has been subjected to criticisms, which overcome the advantages of IF. Critically, extensive use of IF may result in destroying editorial and researchers’ behaviour, which could compromise the quality of scientific articles. Therefore, it is the time of the timeliness and importance of a new invention of journal ranking techniques beyond the journal impact factor.
With the increasing use of information and communications technology (ICT), researchers are able to use computer software tools to find, organise, manipulate, analyse, and share relevant information. However, there are hundreds of such tools to select from, for various research-related uses. I have collected over 700 tools that can help researchers do their work efficiently. It is assembled as an interactive Web-based mind map, titled Research Tools, which is updated periodically. Created using the MindMeister software platform, Research Tools provides a convenient interface with zoom in/out, screen drag, and other user-friendly features.
Being a mind map, Research Tools consists of a hierarchical set of nodes. It has four main nodes: (1) Searching the literature, (2) Writing a paper, (3) Targeting suitable journals, and (4) Enhancing visibility and impact, and six auxiliary nodes. In the mind map, each parent node has several child nodes associated with it, which can be accessed by clicking on the plus (+) sign. Several free tools can be found in the child nodes. Some paid tools are also included.
The four main nodes are described below, listing some tools as examples. In the mind map, a green tick sign indicates my preference for some tools. Users can access the tools by clicking on the arrow sign that appears next to the tool title.
Contribution of Information and Communication Technology (ICT) in Country�S H-Index
The aim of this study is to examine the effect of Information and Communication Technology (ICT) development on country’s scientific ranking as measured by H-index. Moreover, this study applies ICT development sub-indices including ICT Use, ICT Access and ICT skill to find the distinct effect of these sub-indices on country’s H-index. To this purpose, required data for the panel of 14 Middle East countries over the period 1995 to 2009 is collected. Findings of the current study show that ICT development increases the H-index of the sample countries. The results also indicate that ICT Use and ICT Skill sub-indices positively contribute to higher H-index but the effect of ICT access on country’s H-index is not clear.