103 research outputs found
Using sterile insect technique against Carob moth, Ectomyelois ceratoniae (Zeller) (Lep.: Pyralidae), in Yazd province, Iran
Get PDFCarob moth, Ectomyelois ceratoniae (Zeller) (Lep.: Pyralidae), is the most important pest of pomegranate fruit in Iran where the cryptic activity of its larva makes the application of insecticides practically impossible. In this research, we evaluated the viability of the sterile insect technique against the carob moth in two isolated regions in Yazd province (Aqda and Mehriz). The mass rearing of the pest was performed in clean rooms on artificial diet under environmental conditions, 29±1 ºC and 75±5 %RH applying 165 Gy gamma ray as sterilizing doze. The sterile insects were released periodically in Aqda orchards (45 hectares) and in Chah Sheida (12 hectares) in Mehriz between March and November 2015. The infestation rate of carob moth in Aqda and Mehriz significantly reduced, in both target regions and control areas, by 12.27% and 44.02%, as well as 12.06% and 50.11%, for Aqda and Mehriz, respectively. It was concluded that periodical release of sterile carob moths can effectively lower the density of pest population and its economic loss on the harvest
Sensorineural deafness and male infertility: A contiguous gene deletion syndrome
Get PDFBackground: Syndromic hearing loss that results from contiguous gene deletions is uncommon. Deafness-infertility syndrome (DIS) is caused by large contiguous gene deletions at 15q15.3. Methods: Three families with a novel syndrome characterised by deafness and infertility are described. These three families do not share a common ancestor and do not share identical deletions. Linkage was established by completing a genome-wide scan and candidate genes in the linked region were screened by direct sequencing. Results: The deleted region is about 100 kb long and involves four genes (KIAA0377, CKMT1B, STRC and CATSPER2), each of which has a telomeric duplicate. This genomic architecture underlies the mechanism by which these deletions occur. CATSPER2 and STRC are expressed in the sperm and inner ear, respectively, consistent with the phenotype in persons homozygous for this deletion. A deletion of this region has been reported in one other family segregating male infertility and sensorineural deafness, although congenital dyserythropoietic anaemia type I (CDAI) was also present, presumably due to a second deletion in another genomic region. Conclusion: We have identified three families segregating an autosomal recessive contiguous gene deletion syndrome characterised by deafness and sperm dysmotility. This new syndrome is caused by the deletion of contiguous genes at 15q15.3
Techno-economic assessment of CO2 quality effect on its storage and transport: CO2QUEST: An overview of aims, objectives and main findings
Get PDFThis paper provides an overview of the aims, objectives and the main findings of the CO2QUEST FP7 collaborative project, funded by the European Commission and designed to address the fundamentally important and urgent issues regarding the impact of the typical impurities in CO2 streams captured from fossil fuel power plants and other CO2 intensive industries on their safe and economic pipeline transportation and storage. The main features and results recorded from some of the unique test facilities constructed as part of the project are presented. These include an extensively instrumented realistic-scale test pipeline for conducting pipeline rupture and dispersion tests in China, an injection test facility in France to study the mobility of trace metallic elements contained in a CO2 stream following injection near a shallow-water qualifier and fluid/rock interactions and well integrity experiments conducted using a fully instrumented deep-well CO2/impurities injection test facility in Israel. The above, along with the various unique mathematical models developed, provide the fundamentally important tools needed to define impurity tolerance levels, mixing protocols and control measures for pipeline networks and storage infrastructure, thus contributing to the development of relevant standards for the safe design and economic operation of CCS
Carbon capture: Whole system experimental and theoretical modeling investigation of the optimal CO<inf>2</inf> stream composition in the carbon capture and sequestration chain
Get PDFRapid increase in emissions of greenhouse gases (GHGs) has become a major concern to the global community. This is associated with the rapid growth in population and corresponding increase in energy demand. Combustion of fossil fuels accounts for the majority of CO2 emissions. Coal is used mostly for electricity generation, for instance, about 85.5% of coal (produced and imported) in the United 459Kingdom was used for electricity generation in 2011 [1]. Coal-fired power plants are therefore the largest stationary source of CO2
“Pumping iron”—how macrophages handle iron at the systemic, microenvironmental, and cellular levels
Get PDFTwo-DOF VIV of circular cylinder with variable natural frequency ratio: experimental & numerical investigations
No full textCOMPARISON OF THE PERFORMANCE OF MACRO-POLYMERIC FIBERS AND STEEL FIBERS IN CONTROLLING DRYING SHRINKAGE CRACKS OF CONCRETE
No full textThis study investigates the effect of polymeric and steel fibers in controlling
drying shrinkage cracking of concreteby the restrained ring test according to
ASTM C1581 and determines the cracking potential of various mixes. In addition
the effect of various fibers on physical and mechanical properties of concrete
such as a compressive and tensile strength and free shrinkage was investigated.
Fibers used include macro polymeric fiber of single-strand type, spun
multi-strand type and a hooked end steel fiber, which were used at dosages of
0.25, 0.5 and 1 \%. Furthermore a micro polymeric fiber at dosage of
0.25\% was investigated. The results showed that the use of steel fibers up to 1\% and macro polymeric fibers up to 0.5\% have no appreciable effect on compressive
strength. With regards to tensile strength, the effect of fibers up to 0.5\% was similar to that described for compressive strength. However, at the dosage of 1\%, the use of steel fibers increased the tensile strength while macro polymeric fiber slightly decreased this parameter. Free shrinkage test results indicate that the effect of fibers on free shrinkage was negligible. The effect of micro and macro polymeric fibers at the dosage of 0.25\% in decreasing the cracking potential of concrete is low, and cracking potentials are classified as ``High''. At this dosage, steel fiber showed a slightly better performance and the cracking potential was ``Moderate to High''. By increasing the dosage of fibers to 1\%, the cracking potential for macro polymeric fibers and steel fibers were determined as ``Moderate to Low'' and ``Low'' respectively. Crack width measurements showed that macro polymeric fiber and steel fiber at a dosage of 0.25\% decreased crack widths by about 35\% relative to the control mix. At fiber contents of 1\%, the maximum crack opening for the macro polymeric fibers showed a decrease of about 60\% compared to the control mix. The steel fiber showed the best performance at this dosage and was able to completely prevent shrinkage cracking
Towing tank experiment on flow-induced vibration of piggyback circular cylinders
No full textThis paper discussed towing tank experiment on flow-induced vibration of piggyback circular cylinders
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