Effects of rhizobium inoculation, sulfur and phosphorus applications on yield, yield components and nutrient uptakes in chickpea ( Cicer arietinum L.)

This study was carried out to determine the effects of sulfur and phosphorus application and rhizobium inoculation for a chickpea variety, Aziziye-94, under Eastern Turkey conditions in 2004 and 2005. Thetrial was laid out in split-split block design with three replications. Chickpea variety was applied on three different sulfur levels (0, 50 and 100 kg ha-1), phosphorus levels (0, 40 and 80 kg ha-1) andinoculation (inoculated and uninoculated). Whereas the highest grain yield were obtained from 80 kg ha-1 P with 819 kg ha-1 from 100 kg ha-1 S with 758 and from inoculation with 723 kg ha-1. In the first year, they were obtained from 80 kg ha-1 P with 879 kg ha-1 from 100 kg ha-1 S with 818 and from inoculation with 784 kg ha-1 in the second year. Nutrient uptake by grain of chickpea significantly increased due tosulfur doses, except for P uptake in grain at the year of 2004 and S uptake in grain at the year of 2005. Sulfur application significantly increased the uptake of Fe, Mn, Zn and Cu in grain in the both years. The effects of different doses of phosphorus application on nutrient uptakes by grain were found to be statistically significant in both years

Fiber-reinforced alkali-activated concrete : A review

Alkali-activated materials (AAMs) received broad recognition from numerous researchers worldwide and may have potential applications in modern construction. The combined use of AAM and steel fibers are superior to typical binder systems because the matrix and fibers exhibit superior bond strength. The results obtained by various authors have shown that good dispersion of the fibers ensures good interaction between the fibers and the AAM matrix. The tensile strength of FR-AAC is superior to that of Ordinary Portland cement (OPC)-based materials, with the addition of silica fume (SF) being particularly remarkable. However, the tensile strength of fiberreinforced alkali-activated concrete (FR-AAC) decreases with increasing fiber length. The bond strength increases with the increasing grade of concrete, the roughness of interface, and the solution’s strength activated by alkalis. Regardless of fiber type, AAC’s modulus of elasticity is linearly correlated with compressive strength. Fibers can affect the modulus of concrete due to the stiffness of the fiber and the porosity of the composite. Poisson’s ratio for AAC corresponded to the ASTM C469-14 standard (about 0.22) and decreased to about 0.15–0.21 with silica fume addition. There are limited resources for the experimental Poisson’s ratio and it is only estimated using the predictive equations available. Therefore, it is necessary to conduct additional experimental studies to estimate Poisson’s ratios for FR-AAC composites. Retention of 59% and 44% in flexural strength during exposure at 800 ◦C and 1050 ◦C was observed in the FR-AAC stainless steel composite, and the chopped alumina fibers achieved higher yield strength at these temperatures. For FA-based AAC mortars with 1% SF with a hooked end, activated with a solution of NaOH and sodium silicate, an increase in the number of bends increased the bond strength, load pull-out and maximum pull-out strength. Autogenous shrinkage and drying shrinkage increase with higher silicate content, while shrinkage decreases with higher NaOH concentration. Relatively little research has been completed on FR-AAC in terms of durability or different environmental conditions. In addition, trends of development research toward the broad understanding regarding the application possibilities of FR-AAC as appropriate concrete materials for developing robust and green concrete composites for modern construction were extensively reviewed

Behavior of FRP-confined normal- and high-strength concrete under cyclic axial compression

An important application of fiber-reinforced polymer (FRP) composites is as a confining material for concrete, both in the seismic retrofit of existing reinforced concrete columns and in the construction of concrete-filled FRP tubes as earthquake-resistant columns in new construction. The reliable design of these structural members against earthquake-induced forces necessitates a clear understanding of the stress-strain behavior of FRP-confined concrete under load cycles. This paper presents the results of an experimental study on the behavior of FRP-confined normal- and high-strength concrete under axial compression. A total of 24 aramid and carbon FRP-confined concrete cylinders with different concrete strengths and FRP jacket thicknesses were tested under monotonic and cyclic loading. Examination of the test results has led to a number of significant conclusions in regards to both the trend and ultimate condition of the axial stress-strain behavior of FRP-confined concrete. These results are presented, and a discussion is provided on the influence of the main test parameters in the observed behaviors. The results are also compared with two existing cyclic axial stress-strain models for FRP-confined concrete. © 2012 American Society of Civil Engineers.Togay Ozbakkaloglu and Emre Aki

Unilateral congenital elongation of the cervical part of the internal carotid artery with kinking and looping: two case reports and review of the literature

Unilateral and bilateral variation in the course and elongation of the cervical (extracranial) part of the internal carotid artery (ICA) leading to its tortuosity, kinking and coiling or looping is not a rare condition, which could be caused by both embryological and acquired factors. Patients with such variations may be asymptomatic in some cases; in others, they can develop cerebrovascular symptoms due to carotid stenosis affecting cerebral circulation. The risk of transient ischemic attacks in patients with carotid stenosis is high and its surgical correction is indicated for the prevention of ischemic stroke. Detection of developmental variations of the ICA and evaluation of its stenotic areas is very important for surgical interventions and involves specific diagnostic imaging techniques for vascular lesions including contrast arteriography, duplex ultrasonography and magnetic resonance angiography. Examination of obtained images in cases of unusual and complicated variations of vascular pattern of the ICA may lead to confusion in interpretation of data. Awareness about details and topographic anatomy of variations of the ICA may serve as a useful guide for both radiologists and vascular surgeons. It may help to prevent diagnostic errors, influence surgical tactics and interventional procedures and avoid complications during the head and neck surgery. Our present study was conducted with a purpose of updating data about developmental variations of the ICA. Dissections of the main neurovascular bundle of the head and neck were performed on a total 14 human adult cadavers (10 – Africans: 7 males & 3 females and 4 – East Indians: all males). Two cases of unilateral congenital elongation of the cervical part of the ICA with kinking and looping and carotid stenoses were found only in African males. Here we present their detailed case reports with review of the literature

Correlation and path coefficient analysis for yield and some yield components of wheat (Triticum aestivum l.)

The experiment was conducted to determine the relationship among yield and some yield components using correlation and path coefficient analysis. This study was performed under Mardin conditions the years of 2011–2012 and 2012–2013. Fifteen bread wheat varieties were used in the experiments. The randomised complete blocks design with 3 replications was used. The characteristics such as plant height, spike height, numbers of seed per spike, seed yield, harvest index, biological yield and 1000 seed weight were investigated in the study. Positive and statistically significant (p < 0.01) relationships were determined between seed yield, spike height, numbers of seed per spike, biological yield and harvest index. According to path coefficient analysis, there were strong direct effects of the biological yield and harvest index on the seed yield, p = 0.53549 and 0.548321, respectively. The results of this study indicate that numbers of seed per spike, biological yield and harvest index affected seed yield and it was concluded that these characters should be considered as significant selection criteria in wheat breeding for yield under the regional conditions of southeast Turkey. © 2017, Scibulcom Ltd. All rights reserved

EFFECTS OF DIFFERENT DOSES OF NITROGEN AND CHICKEN MANURE ON TIR WHEAT (Triticum aestivum L. var. leucospermum (K o r n.) F a r w.) YIELD AND YIELD COMPONENTS

WOS: 000368314600046Chicken manure is a concentrated and quick acting fertiliser. Application of chicken manure at optimum doses together with nitrogen fertilising may provide balanced significant increase of crop productivity and production quality. In this study, the effects of nitrogen doses (0, 40, 80, 120 and 160 kg nitrogen ha(-1) with sowing and 60 kg nitrogen ha(-1) top fertiliser with tillering season except control plots in total 0, 100, 140, 180 and 220 kg nitrogen ha(-1)) under the condition with chicken manure (10 t ha(-1)) and without chicken manure on yield and yield components of Tir wheat were investigated. Experiment was laid out in Split Plots Design in Randomised Blocks with 3 replicates in Yuzuncu Yil University, in 2009-2010 and 2010-2011 growing seasons. While the highest seed yield was obtained at the chicken manure and 180 kg ha(-1) nitrogen fertiliser as 2346 and 2073 kg ha(-1), repectively, the lowest seed yield was obtained without chicken manure and control as 1451 and 1270 kg he in years of 2011-2012 and 2012-2013, respectively. The results of the study indicated that nitrogen and chicken manure applications increased significantly the seed yield and yield components

Research on the effect of phosphorus and molybdenum applications on the yield and yield parameters in lentil (Lens culinaris Medic.)

Lentil is one of the oldest domesticated crops grown and used mostly in human diets in Turkey. The trial was laid out in a factorial randomized complete block design with three replications. Sazak-91 lentilvariety was applied at three different phosphorus levels (0, 30 and 60 kg ha-1) and four different molybdenum levels (0, 2, 4 and 6 g/kg seed) in 2005 - 2006 and 2006 - 2007. In the study, the effect ofphosphorus and molybdenum levels on the plant height, number of branches, number of pods per plant, number of seeds per plant, 1000 seed weight, grain yield, harvest index, biological yield, numberof nodules per plant, root dry weight, shoot dry weight protein ratio and phosphorus content in seed were investigated. Whereas the highest grain yield were obtained from 60 kg ha-1 P with 1086 kg ha-1 and from 6 g/kg seed molybdenum with 1231 kg ha-1 in the first year, the values were 80 kg ha-1 P with 1049 kg ha-1 and from 6 g/kg seed molybdenum with 1089 kg ha-1 in the second year