scholarly journals One Year Field Trial of a Fissure sealant Composed by Cyanoacrylate-polymethyl Methacrylate and Calcium Hydroxide Catalyst

1973 ◽  
Vol 23 (2) ◽  
pp. 179-184
Author(s):  
Kenichi HORII ◽  
Osamu SAKAI ◽  
Teruo NIWA ◽  
Tetsuro TUBONE ◽  
Taichi YOSHIDA ◽  
...  
2011 ◽  
Vol 48 (No. 9) ◽  
pp. 413-417 ◽  
Author(s):  
S. Szczukowski ◽  
J. Tworkowski ◽  
A. Klasa ◽  
M. Stolarski

In the period 1996–1999 field trial was performed in Obory near Kwidzyn on heavy textured Fluvisols. The experiment was aimed to determine yield, chemical composition, heat value of wood of six genotypes of willow coppice in relation to cutting frequency and on determining the costs and profitability of willow production on arable land for purposes of energy generation. Yield of wood dry matter in one-year cutting cycle amounted to 14.09 t/ha/year 1 and significantly increased to 16.05 and 21.55 t/ha/year when harvesting was performed in two and three years cycle, respectively. The highest yield was found for Salix viminalis 082 form cut in three years cycle and it amounted to 26.44 t/ha/year 1. Stems of Salix sp. cut every three years showed the lowest water content (46.05%), high heat value 19.56 MJ/kg dry matter and the highest content of cellulose (55.94%), lignins (13.79%) and hemicelluloses (13.96%). High yielding potential of Salix sp. and high content of cellulose and lignin in wood make this crop very prosperous as a feedstock for bioenergy production. The highest profit from the willow plantation was obtained in case of harvest every three years at 578.76 EUR/ha/year.


1987 ◽  
Vol 3 (6) ◽  
pp. 304-306 ◽  
Author(s):  
Ulla Schroder ◽  
Maria Szpringer-Nodzak ◽  
Jadwiga Janicha ◽  
Maria Wacinska ◽  
Jerzy Budny ◽  
...  

Author(s):  
T. Papastylianou ◽  
S. Laranjeira ◽  
P. Thomson ◽  
A. Guazzi ◽  
G.D. Clifford ◽  
...  

1998 ◽  
Vol 74 (5) ◽  
pp. 714-719 ◽  
Author(s):  
Claude Delisle

One-year-old red ash (Fraxinus pennsylvanica) seedlings inoculated with the endomycorrhizal fungus Glomus intraradices were outplanted in abandoned fields and in clearcuts. Survival and growth of seedlings were measured for four years. Mean total heights, mean collar diameters, and mortality did not differ significantly between inoculated plants and the controls or between field-grown and clearcut-grown seedlings. However, the variance components of total height and diameter associated with sites differed significantly from zero. Growth in all cases seemed related to soil wetness. Key words: Glomus intraradices, Fraxinus pennsylvanica, afforestation


2020 ◽  
Vol 10 (1) ◽  
pp. 6-12
Author(s):  
Fahd AA Karim ◽  
Asma Sultana ◽  
Hanann Shiekh ◽  
Md Ashif Iqbal ◽  
Puja Shrestha ◽  
...  

Background:Pulp capping is a treatment that enables pulp to recover and maintain its vitality and function by applying a protective agent to an exposed pulp. Ca (OH)2 has been considered the gold standard for this procedure. Despite its wide use, Ca (OH)2 is not ideally suited for pulp capping. Recently ledermix cement used for indirect pulp capping material in the outer world broadly. Objective: To assess the clinical and radiological evidence of the formation of secondary dentin and compare the degree of short time post operating pain after indirect pulp treatment. Methods: A Randomized control trial in vivo study was directed in the Department of Conservative Dentistry and Endodontics, Faculty of Dentistry, Bangabandhu Sheikh Mujib Medical University for one year (January 2012-January 2013). We took the patients with 40 deep carious permanent teeth as a sample. The selected teeth were divided into two test groups. All odd number teeth (20) were included in group-1(where pulp capping was done with ledermix cement). All even number teeth (20) were included in group-2(where pulp capping was done with Ca(OH)2). We assessed all the patients clinically and radiographically at the interval of 3, 6, and 12 months simultaneously for the assessment of dentinal bridge formation and also collected data was analyzed using statistical package for social science (SPSS) version 17. Results: Among the full scale 40 models, ledermix (20) and Ca(OH)2(20), minor to direct irritaion of the teeth was experienced premium to treatment and found comparable in the two gatherings. Regardless, after 24 hrs of treatment, this value was shockingly higher in the Ca(OH)2 (p<0.01)group than in the Ledermix gathering (p < 0.001, t-test). Following 7 days, there was no basic differentiation between them. Follow up evaluation revealed, failure of 3 teeth treated with Ca(OH)2 and 2 teeth treated with ledermix due to pain and swelling. The remaining 35 teeth radiated an impression of being clinically and radiologically successful a year postoperatively. Conclusion: No post-operative pain was experienced in both groups in the long term. However, within the first hours after cementation, there was a sensation of pain significantly higher in the Ca(OH)2 group than in the Ledermix group. Ledermix can be considered a predictable treatment and may be an alternative to calcium hydroxide in indirect pulp capping. Update Dent. Coll. j: 2020; 10 (1): 6-12


1966 ◽  
Vol 17 (4) ◽  
pp. 479 ◽  
Author(s):  
P May

Experiments are described in which the effect of training sultana shoots vertically or horizontally was tested. Horizontal training of shoots caused reduction in fruitfulness in all cases, with the exception of one experiment with very vigorous young vines. Vertical growth tended to improve vigour, in which case fruitfulness was greater, but this effect decreased with increasing numbers of vertical canes per vine. Increased yield was obtained in one year out of three in a field trial where the shoots to be used as pruning wood were encouraged to grow vertically. It is concluded that increased fruitfulness will result from measures which improve the vigour of shoots, such as vertical training, preservation of the shoot tip, or prevention of early trailing of the shoot; and that shoots which have grown horizontally should be avoided as pruning canes.


Author(s):  
Andrea Zatloukalová ◽  
Tomáš Lošák ◽  
Jaroslav Hlušek ◽  
Pavel Pavloušek ◽  
Martin Sedláček ◽  
...  

A one-year field trial was established with the vine variety Ryzlink vlašský (Riesling italico) to evaluate the effect of spring soil applications and 5x repeated foliar application of magnesium fertilisers on yields and quality of grapes. On light soil of the experimental locality Žabčice (ca 25 km south of Brno) visual symptoms of Mg deficiency on vine leaves had been monitored in the past. The experiment involved 4 treatments: 1) unfertilised control; 2) spring soil application of Kieserite – 20 kg Mg.ha−1; 3) 5x foliar application of a 5% solution of Epso Combitop – Mg, S, Mn, Zn; 11.8 kg Mg.ha−1; 4) 5x foliar applications of a 5% solution of Epso Top – Mg, S; 14.8 kg Mg.ha−1.No significant differences among the treatments were detected in the contents of K (1.40–1.67%) and Ca (1.63–1.91%) in leaves sampled after the applications. After foliar applications the contents of Mg and S significantly increased in treatments 3–4 to 0.42–0.49% and 0.34–0.40 %, respectively compared to treatments 1–2 (0.29–0.30% and 0.22%, respectively). The content of Zn (173–380 mg.kg−1) and Mn (90–551 mg.kg−1) increased significantly in treatment 3 compared to the other treatments. The chlorophyll index did not differ among the treatments. Grape yields (t.ha−1) in treatments 1–4 were the following: 7.04–8.16–7.51–7.26 t.ha−1, respectively. Only the soil-applied treatment 2 differed significantly from the other treatments. The content of sugar (16.5–17.9 °NM), titratable acids (12.78–13.25 g.l−1) and the pH of must (3.02–3.11) did not differ among the treatments.


1988 ◽  
Vol 158 (1) ◽  
pp. 60-69 ◽  
Author(s):  
J. D. Clemens ◽  
J. R. Harris ◽  
D. A. Sack ◽  
J. Chakraborty ◽  
F. Ahmed ◽  
...  

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