165 research outputs found
Occurrence and distribution of pome fruit viruses in Tunisia
The phytosanitary status of pome fruit trees was examined in Tunisia, in surveys conducted in spring 2009 and 2010, in the main Tunisian mother blocks. A total of 248 samples were collected (111 from apple, 106 from pear and 31 from quince), and tested for the presence of Apple chlorotic leaf spot virus (ACLSV) and Apple mosaic virus (ApMV) using ELISA and RT-PCR, and for Apple stem pitting virus (ASPV) using RT-PCR. 37% of the samples were infected by at least one virus. ACLSV was the most widespread virus (34% of samples), followed by ApMV (4%). Furthermore, molecular analysis showed that 69% of the sampled trees were infected and apple was the most infected species (80%), followed by pear (75%) and quince (10%). ASPV was the most prevalent virus (46%), followed by ACLSV (39%) and ApMV (10). Mixed infections occurred in several trees, and the most common combination was ASPV+ACLSV (23%). This is the first report on the presence of viruses infecting pome fruits in Tunisia
You Reap What You Plant: Social Networks in the Arab World â The Hashemite Kingdom of Jordan
The aim of this paper is threefold. First, to describe the general evolution of bonding and bridging social capital in Jordan. Second, to explore the role of state policies in affecting the various forms of social capital. Finally, to analyze how poverty and economic
reform influence the extent and nature of social capital. Social networks, a crucial element of social capital, and cleavages are strongly affected by political and economic dislocations. The former include wars and civil wars, while the latter include state policies and economic
conditions. Thus wasta, an old but still significant form of social capital in the Arab World, becomes helpful in good times but destructive in bad times. Successful economic reform requires a good understanding of the nature of social relations and of the ways in which social networks themselves are used by members during good times and bad times for both survival and advancement
Towards improving the safety and diagnostic yield of stereotactic biopsy in a single centre
Background: Previously, we reported on our single centre results regarding the diagnostic yield of stereotactic needle biopsies of brain lesions. The yield then (1996-2006) was 89.4%. In the present study, we review and evaluate our experience with intraoperative frozen-section histopathologic diagnosis on-demand in order to improve the diagnostic yield. Methods:
Small molecule activators of the Trk receptors for neuroprotection
The neurotophin signaling network is critical to the development and survival of many neuronal populations. Especially sensitive to imbalances in the neurotrophin system, cholinergic neurons in the basal forebrain are progressively lost in Alzheimer's disease. Therapeutic use of neurotrophins to prevent this loss is hampered, however, by a number of pharmacological challenges. These include a lack of transport across the blood-brain barrier, rapid degradation in the circulation, and difficulty in production. In this review we discuss the evidence supporting the neurotrophin system's role in preventing neurodegeneration and survey some of the pharmacological strategies being pursued to develop effective therapeutics targeting neurotrophin function
Scientific Opinion on the evaluation of the substances currently on the list in the annex to Commission Directive 96/3/EC as acceptable previous cargoes for edible fats and oils â Part III of III
Shipping of edible fats and oils into Europe is permitted in bulk tanks, in which substances, included in a positive list, had been previously transported. The European Commission requested EFSA to evaluate the list of substances in the Annex to Commission Directive 96/3/EC as acceptable previous cargoes for edible fats and oils, taking into account its review of the Scientific Committee on Food criteria for acceptable previous cargoes and criteria proposed by the Codex Committee for Fats and Oils. This is the third and last scientific opinion of the EFSA Panel on Contaminants in the Food Chain (CONTAM Panel) on this topic, in which sixteen of these substances or groups of substances have been evaluated. The CONTAM Panel concluded that sodium silicate (water glass) solution, iso-octanol, iso-nonanol, iso-decanol, 1,3-propanediol, isobutyl acetate, sec-butyl acetate, tert-butyl acetate, n-butyl acetate, propylene tetramer, paraffin wax, candelilla wax, white mineral oils and glycerol would not be of health concern as previous cargoes. The CONTAM Panel concluded that carnauba wax was not acceptable as a previous cargo because of its insolubility in water and high melting point, which raise concerns regarding the efficiency of tank cleaning. There was insufficient information available on the composition of montan wax for the CONTAM Panel to conclude that it would be of no health concern when used as previous cargo and hence it does not meet the criteria for acceptability as previous cargo. The CONTAM Panel made several recommendations regarding the way in which the substances are described in the Annex to Commission Directive 96/3/EC, to correct inaccuracies and to better reflect current transport practices
A systematic review of randomised controlled trials assessing effectiveness of prosthetic and orthotic interventions.
BACKGROUND: Assistive products are items which allow older people and people with disabilities to be able to live a healthy, productive and dignified life. It has been estimated that approximately 1.5% of the world's population need a prosthesis or orthosis. OBJECTIVE: The objective of this study was to systematically identify and review the evidence from randomized controlled trials assessing effectiveness and cost-effectiveness of prosthetic and orthotic interventions. METHODS: Literature searches, completed in September 2015, were carried out in fourteen databases between years 1995 and 2015. The search results were independently screened by two reviewers. For the purpose of this manuscript, only randomized controlled trials which examined interventions using orthotic or prosthetic devices were selected for data extraction and synthesis. RESULTS: A total of 342 randomised controlled trials were identified (319 English language and 23 non-English language). Only 4 of these randomised controlled trials examined prosthetic interventions and the rest examined orthotic interventions. These orthotic interventions were categorised based on the medical conditions/injuries of the participants. From these studies, this review focused on the medical condition/injuries with the highest number of randomised controlled trials (osteoarthritis, fracture, stroke, carpal tunnel syndrome, plantar fasciitis, anterior cruciate ligament, diabetic foot, rheumatoid and juvenile idiopathic arthritis, ankle sprain, cerebral palsy, lateral epicondylitis and low back pain). The included articles were assessed for risk of bias using the Cochrane Risk of Bias tool. Details of the clinical population examined, the type of orthotic/prosthetic intervention, the comparator/s and the outcome measures were extracted. Effect sizes and odds ratios were calculated for all outcome measures, where possible. CONCLUSIONS: At present, for prosthetic and orthotic interventions, the scientific literature does not provide sufficient high quality research to allow strong conclusions on their effectiveness and cost-effectiveness
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