407 research outputs found

    Study of effective interaction from single particle transfer reactions on f-p shell nuclei

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    The present study concentrates on the average effective two-body interaction matrix elements being extracted, using sum-rule techniques, from transfer reactions on target states having single orbital as well as two orbitaloccupancy. This investigation deals with transfer reactions on f-p shell nuclei involving (i) 1f7/21f_{7/2} and 2p3/22p_{3/2} transfer on target states using 40^{40}Ca as inert core, and (ii) 2p3/22p_{3/2} and1f5/21f_{5/2} transfer on states using 56^{56}Ni as core.Comment: 12 pages, ptptex Subj-Classes: Nuclear Shell Structure e-mail:[email protected]

    Effective two-body interactions in the s-d shell nuclei from sum rules equations in tranfer reactions

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    Average effective two-body interaction matrix elements in the s-d shell have been extracted, from data on experimentally measured isospin centroids, by combining the recently derived new sum rules equations for pick-up reactions with similar known equations for stripping reactions performed on general multishell target states. Using this combination of stripping and pick-up equations, the average effective matrix elements for the shells, 1d^2_5/2, 2s^2_1/2 and 1d^2_3/2 respectively have been obtained. A new feature of the present work is that the restriction imposed in earlier works on target states, that it be populated only by active neutrons has now been abandoned.Comment: 12 pages, RevTeX, e-mail: [email protected]

    ネパール農村地域の暮らし改善に対するエコロジカルサニテーションの役割

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    京都大学0048新制・課程博士博士(地球環境学)甲第22865号地環博第204号新制||地環||39(附属図書館)京都大学大学院地球環境学舎環境マネジメント専攻(主査)准教授 真常 仁志, 教授 舟川 晋也, 教授 藤井 滋穂学位規則第4条第1項該当Doctor of Global Environmental StudiesKyoto UniversityDFA

    Genus Ramaria in the Eastern Himalaya: subgenus Laeticolora-I

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    In this paper an account of 11 taxa of the genus Ramaria (Fr.) Bonorden collected from different localities in the eastern Himalaya and adjoining hills is given. Of the taxa included, Ramaria conjunctipes, Ramaria araiospora var. rubella, Ramaria xanthosperma, Ramaria rubribrunnescens, Ramaria flavigelatinosa, Ramaria flavigelatinosa var.carnisalmonea and Ramaria gelatiniaurantia are new records for the Himalayas; while Ramaria rubrogelatinosa, Ramaria brevispora, Ramaria brevispora var. albida and Ramaria perbrunnea were not known earlier from the eastern Himalaya

    Performance of variable-orifice nozzles for liquid fertilizer applications

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    Citation: Sharda, A., Fulton, J. P., & Taylor, R. K. (2016). Performance of variable-orifice nozzles for liquid fertilizer applications. Applied Engineering in Agriculture, 32(3), 347-352. doi:10.13031/aea.32.11428Variable-rate application continues to gain interest among precision agriculture practitioners including the use of crop sensor technology for application of nitrogen in grain crops. For liquid fertilizers, variable-orifice nozzles are being implemented since they provide a much larger nozzle flow range compared to traditional fixed orifice nozzles. However, understanding the performance of variable-orifice nozzles under different field operating conditions has been limited. Therefore, the objective of this study was to evaluate the performance of variable orifice nozzles in support of variable-rate application. Two common variable-orifice nozzles offered by different companies were selected for this study. They were tested over three flow ranges (0.76 to 1.89 L/min) with all tests replicated three times. A commercially available 18.6-m, wet boom sprayer equipped with 37 nozzle bodies was used. Nozzles were numbered but then randomly assigned a position along the boom. To evaluate the performance of an individual nozzle, three random nozzle locations along the spray boom were established for both sets of nozzles. Therefore, 18 tests per replication were required to include the 3 flow rates, 3 different locations, and 2 nozzle types. Once the desired flow rate test was established, tip flow was measured using SpotOn Sprayer Calibrator technology. Tip flows were recorded and statistical analyses performed to evaluate flow uniformity (CV) across the boom but also detect off-rate errors by individual nozzles and locations across the boom. With the exception of a few nozzles, the uniformity across the spray boom, as defined by the CV, was acceptable for both nozzle types over approximately a 2:1 flow range. Both nozzle types were less uniform at the low flow rate. There were three nozzles of each type that resulted in unacceptable flow errors in multiple tests. © 2016 American Society of Agricultural and Biological Engineers

    Comparison of I-gel and laryngeal mask airway classic in terms of ease of insertion and hemodynamic response: a randomised observational study

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    Background: The gold standard technique for preserving a patent airway throughout anaesthesia is tracheal intubation. I-gel is a relatively new addition to the SADs. I-gel has combined the concept of the non-cuffed SADs like the SLIPA and gastric tube of the proseal LMA yet retaining the shape of laryngeal mask. Hence, we have compared ease of insertion, number and duration of insertion attempts among the two devices. Methods: This study was conducted on patients undergoing elective surgery under GA in Pacific Medical College and Hospital, Udaipur. Patients were divided into two groups: group A= LMA classic, a variant of supraglottic airway device and group B= I-gel, a variant of supraglottic airway device. The two devices were than compared with respect to success rate of insertion, time taken for insertion and ease of gastric tube placement (number of attempts) and post-operative airway morbidity. Results: Mean insertion time was 8.66±3.21 seconds in C-LMA and 6.49±1.92 seconds in I-gel (p<0.001). 97.14% was the success rate of single time attempt insertion with I-gel as compared to 88.57% in C-LMA. There was a failure rate of 11.43% in single attempt insertion with CLMA as compared to 2.86% with I-gel (p>0.05). Conclusions: We hereby concluded with our study that successful and shorter duration of insertion, with less hemodynamic response, makes I-gel™ a suitable alternative to LMA classic™ during general anesthesia

    Traumatic aniridia in a pseudophakic patient 6 years following surgery

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    Mikel Mikhail1, Keyvan Koushan2, Rajeshvar K Sharda2, Gloria Isaza2, Keith D Mann21Michael G DeGroote School of Medicine, 2Division of Ophthalmology, Department of Surgery, McMaster University, Hamilton, ON, CanadaPurpose: To report a case of aniridia in a pseudophakic patient following blunt trauma to the eye.Case report: The traumatized eye had cataract surgery through a 3.0 mm clear corneal incision 6 years prior to the incident. While there have been previous cases of traumatic aniridia in pseudophakic eyes, previous reports have all occurred closer to the time of the cataract surgery. We believe that the most likely mechanism of loss of iris tissue is through wound dehiscence, which would suggest the relative instability of clear corneal incisions several years postoperatively. The patient's visual acuity returned to 20/20 4 weeks post-trauma, with symptoms of glare which were managed by the use of a colored contact lens.Conclusion: The possibility of wound dehiscence should be recognized as an important clinical entity in the immediate postoperative period, but also several years following cataract surgery.Keywords: anirida, pseudophakia, cataract extraction, cataract, phacoemulsification, traum

    Sirtuin inhibition induces apoptosis-like changes in platelets and thrombocytopenia

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    Sirtuins are evolutionarily conserved NAD+-dependent acetyl-lysine deacetylases that belong to class III type of histone deacetylases. In humans, seven sirtuin isoforms (Sirt1 to Sirt7) have been identified. Sirtinol, a cell permeable lactone ring derived from naphthol, is a dual Sirt1/Sirt2 inhibitor of low potency whereas EX-527 is a potent and selective Sirt1 inhibitor. Here we have demonstrated that Sirt1, Sirt2 and Sirt3 are expressed in enucleate platelets. Both sirtinol or EX-527 induced apoptosis-like changes in platelets as revealed from enhanced annexin V binding, ROS production and drop in mitochondrial transmembrane potential. Above changes were associated with increased phagocytic clearance of the platelets by macrophages. Expression of acetylated p53 and the conformationally active form of Bax were found to be significantly higher in both sirtinol- as well as EX-527-treated platelets, thus implicating p53-Bax axis in apoptosis induced by sirtuin inhibitors. Administration of either sirtinol or EX-527 in mice led to reduction in both platelet count and number of reticulated platelets. Our results, for the first time, implicate sirtuins as a central player in determination of platelet aging. Since sirtuin inhibitors are being evaluated for their anti-tumor activity, this study rekindles attention to potential side effect of sirtuin inhibition in delimiting platelet life span and management of thrombosis
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