2,557 research outputs found
Distribution of some elements in Veronica scutellata L. from Bolu,Turkey: soil-plant interactions
Veronica scutellata L. occurs in moist and wet habitats, such as ponds, marshes and other wetlands. This study was conducted on this species to examine its mineral element uptake status in terms of interactions between soil and plant. Experimental materials were taken from the Southern coast of Black Sea at coordinates 40º36’N and 31º16’E at an altitude of 1400 m above sea level from Bolu – Turkey; using standard methods and plant (root, stem and leaf parts) and soil mineral element measurements (Al, B, Ca, Cu, Fe, K, Mg, Mn, Na, Ni and Zn) were done. During the study, ICP-OES was employed for the measurement of mineral elements. It was observed that considerable amounts of B, Ca, K, Mg, Mn, Na and Zn are accumulated by the plant
Macro- and micro-strain in GaN nanowires on Si(111)
We analyze the strain state of GaN nanowire ensembles by x-ray diffraction.
The nanowires are grown by molecular beam epitaxy on a Si(111) substrate in a
self-organized manner. On a macroscopic scale, the nanowires are found to be
free of strain. However, coalescence of the nanowires results in micro-strain
with a magnitude from +-0.015% to +-0.03%.This micro-strain contributes to the
linewidth observed in low-temperature photoluminescence spectra
Phase sensitive detection of dipole radiation in a fiber-based high numerical aperture optical system
We theoretically study the problem of detecting dipole radiation in an
optical system of high numerical aperture in which the detector is sensitive to
\textit{field amplitude}. In particular, we model the phase sensitive detector
as a single-mode cylindrical optical fiber. We find that the maximum in
collection efficiency of the dipole radiation does not coincide with the
optimum resolution for the light gathering instrument. The calculated results
are important for analyzing fiber-based confocal microscope performance in
fluorescence and spectroscopic studies of single molecules and/or quantum dots.Comment: 12 pages, 2 figure
The effectiveness of Sufi music for mental health outcomes. A systematic review and meta-analysis of 21 randomised trials.
BACKGROUND: There is some evidence that Sufi music therapy might improve physical and mental well-being; however, no systematic review or meta-analysis has pooled and critiqued the evidence. The aim of this systematic review was to evaluate the effects of Sufi music therapy on mental health outcomes. METHODS: We searched Medline, PsycINFO, the Web of Science, Science Direct, PsycARTICLES, Cochrane Library, SCOPUS, CINAHL Plus, AMED, and ULAKBIM databases, and the reference lists of the studies found. Papers published in academic peer-reviewed journals were included, as well as from other sources such as chapters in edited books, the grey literature, or conference presentations. Articles published up to March 2020 in Turkish and English were included. Our primary outcome of interest was anxiety and secondary outcomes of interest were other mental health outcomes such as depression. To assess the methodological quality of the articles, the Cochrane Risk of Bias Tool was used. The quality of evidence was assessed using the GRADEpro GDT system. RESULTS: This search yielded 21 clinical trials that were eligible for inclusion. A meta-analysis, using a random effects model, of 18 randomised controlled trials involving 1454 participants showed that Sufi music therapy with makams, compared with treatment as usual (TAU) or a no-music control group, reduced symptoms of anxiety in the short term in patients undergoing an operation or treatments such as chemotherapy or haemodialysis (standardised mean difference SMD= -1.15, 95% CI, -1.64 to -0.65; very low-quality evidence). The evidence of Sufi music with makam's effect on anxiety is rated as very low. Qualitative synthesis of secondary outcomes revealed significant effects for depression, positive symptoms in schizophrenia, stress, which however were based on fewer studies. Trials were of moderate methodological quality, and there was significant heterogeneity across the studies. CONCLUSION: Sufi music may reduce anxiety of patients undergoing medical procedures like haemodialysis, coronary artery surgery, angiography, colonoscopy, bone marrow aspiration and biopsy procedures. Evidence from single studies suggests effects on depression and stress as well. However, due to methodological limitations of the studies, further, higher quality studies are required in other cultures
Phylogenetic relationship analysis of Genista L. (Fabaceae) species from Turkey as revealed by intersimple sequence repeat amplification
Genista L. (Fabaceae) is distributed in Europe, South Africa, and West Asia and consists of almost 90 species in the world. Thirteen species of the genus are distributed in Turkey. Taxonomic problems of the species started to be resolved with recently developed DNA-based molecular methods. These methods, in contrast to phenotypical analyses, are free from the effects of environmental conditions. In this study, DNA of the species which belong to the Genista genus, grown naturally in Turkey and collected from the different localities, were isolated with a commercial kit. Inter-simple sequence repeat (ISSR) is a simple molecular marker system that provides reliable results. Based on ISSR data, genetic similarities anddendrogram demonstrating the phylogenetic relationships among the Genista taxa were prepared by the NTSYSpc 2.0 software. In this study, infrageneric classifications of the Genista taxa belonging to the Flora of Turkey were conducted based on molecular data. ISSR analysis strongly supported the hypothesis that G. aucheri is accepted as the synonym of G. sessilifolia
Computed tomography depiction of normal inguinal lymph nodes in children
Background: The aim of the study was to establish computed tomography (CT) characteristics, distribution and provide normative data about size of normal inguinal lymph nodes in a paediatric population. Materials and methods: Four hundred eighty-one otherwise healthy children (147 girls, mean age: 8.87, range 0–17 years) underwent pelvic CT in the setting of high-energy trauma were included in the study. Both axial and coronal 1.25-mm reconstructions were evaluated for the presence, location (deep or superficial), number, presence of fat attenuation, and shape of the lymph nodes, short-axis diameter of the biggest lymph node for each of right and left inguinal regions. Results: A total of 7556 lymph nodes were detected in 481 subjects (the mean count of superficial and deep inguinal lymph nodes was 13.35 [range 6–23] and 2.36 [range 0–7] per subject, respectively): 15% (1135/7556) deep located, 85% (6421/7556) superficially located, 86.6% (6547/7556) with fat attenuation, 99.2% (7496/7556) oval in shape, 0.8% (60/7556) spherical. The short-axis diameter of the lymph nodes increased with age. Pearson’s correlation coefficient for superficial and deep lymph nodes in boys and girls, respectively: 0.538 (p < 0.001), 0.504 (p < 0.001), 0.452 (p < 0.001) and 0.268 (p < 0.001). The mean maximum short-axis diameters in different age groups and gender varied between 6.33 ± 0.85 mm and 8.68 ± 1.33 mm for superficial, 3.62 ± 1.16 mm and 5.83 ± 1.05 mm for deep inguinal lymph nodes. Conclusions: Inguinal lymph nodes were multiple, commonly contained fat, and were oval in shape. The data determined about inguinal lymph node size in different paediatric age groups may be applicable as normative data in daily clinical CT evaluation practice
Kikuchi — Fujimoto disease: cervical lymphadenopathy suggestive of relapsing lymphoma in patient with lymphoblastic lymphoma
Aim: Kikuchi — Fujimoto disease (KFD) or histiocytic necrotizing lymphadenitis is a rare disorder and often confused with lymphoma. Patient: There is presented a case of 28-year-old patient with cervical lymphadenopathy, who had history of lymphoma. Results: On immunohistopathologic examination diagnosis of KFD was made and patient followed without any treatment. Conclusion: Patient’s lymphadenopathy had almost resolved and he was completely asymptomatic after three months. In patient with cervical lymphadenopathy KFD should be considered in the differential diagnosis
Effectiveness of flameless catalytic infrared radiation against life stages of three stored-product insect species in stored wheat
A bench top flameless catalytic infrared emitter was evaluated in the laboratory to disinfest wheat containing different life stages (ages) of the lesser grain borer, Rhyzopertha dominica; rice weevil, Sitophilus oryzae; and red flour beetle, Tribolium castaneum. The emitter produces infrared in the 3 to 7 um range. A noncontact infrared thermometer obtained real-time grain temperatures during exposures of uninfested and infested wheat containing various life stages of the three insect species. The grain temperatures attained were influenced by wheat quantity, distance from the emitter, and exposure time, which in turn influenced effectiveness against various life stages of the three species. In general, higher grain temperatures were attained in 113.5 g of wheat as opposed to 227.0 g, at 8.0 cm from the emitter surface rather than at 12.7 cm, and during a 60-sec exposure compared to a 45-sec exposure. Logistic regression indicated the probability of death of various life stages of R. dominica, S. oryzae, and T. castaneum was temperature-dependent. About 99 to 100% mortality of all life stages of the three species occurred when the mean wheat temperatures were in the range of 108 to 114°C. The promising results show flameless catalytic infrared technology to be a viable option for disinfestation of stored wheat, provided such high temperatures do not affect grain quality.Keywords: Infrared radiation, Stored-product insects, Non-chemical method, Efficacy assessmen
Adaptive Output Feedback Control of the NASA GTM Model with Unknown Nonminimum-Phase Zeros
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/90722/1/AIAA-2011-6204-387.pd
- …