scholarly journals Do resin core build-ups obtain the benefits of higher bonding ability from direct or indirect technique?

2021 ◽  
Author(s):  
Mami Higashi ◽  
Atsushi Mine ◽  
Mariko Matsumoto ◽  
Masahiro Yumitate ◽  
Ryosuke Hagino ◽  
...  
Keyword(s):  
Resin Core ◽  
Indirect Technique

Wybrane socjodemograficzne determinanty postaw konsumentów wobec żywności o obniżonej zawartości cukru

2016 ◽  
pp. 145-157
Author(s):  
Katarzyna Staniewska ◽  
Danuta Jakubowska ◽  
Monika Radzymińska
Keyword(s):  
Research Method ◽  
Sugar Content ◽  
Consumer Attitudes ◽  
Demographic Variables ◽  
Demographic Characteristics ◽  
Educational Institutions ◽  
Gender And Age ◽  
Indirect Technique ◽  
The Impact ◽  
Interview Questionnaire

The aim of this study was to determine the impact of socio-demographic variables on consumer attitudes towards food with a reduced sugar content. The study was conducted in educational institutions, a university and educational centers for seniors located in the Warmia-Mazury, using a survey research method, indirect technique (an original interview questionnaire). In total, 750 respondents were interviewed. The majority of respondents, regardless of socio-demographic characteristics, assesses the health benefits of the sugar content reduction as large and rather large. Despite this, a relatively small portion of respondents, varied by gender and age, used in their diets sugar substitutes and was interested in products with a reduced sugar content. According to the most of the respondents, lowering the sugar content of a product affects the deterioration of its flavor.

Nitrogen availability from peat amendments used in boreal oil sands reclamation

2010 ◽  
Vol 90 (1) ◽  
pp. 165-175 ◽  
Author(s):  
S S Hemstock ◽  
S A Quideau ◽  
D S Chanasyk
Keyword(s):  
Soil Nitrogen ◽  
Seasonal Variability ◽  
Oil Sands ◽  
Nitrogen Availability ◽  
Organic N ◽  
Soil Reclamation ◽  
Microbial Biomass N ◽  
Net Nitrification ◽  
Resin Core ◽  
Net Mineralization

Following surface mining, peat is typically used as an organic amendment to cap reconstructed soils in the Athabasca oil sands region of Alberta. Yet, very little is known about its ability to provide available nitrogen (N) in these soils. Hence, the overall objective of this study was to measure soil nitrogen (N) availability throughout the year in five peat amendments. Specific objectives were: (1) to examine seasonal variability in soil labile N pool sizes (nitrate, ammonium, dissolved organic N, and microbial biomass N), and (2) to determine in situ net nitrification, ammonification, and mineralization rates using the resin-core technique. Results from this field incubation method indicated a strong seasonal variability in net mineralization rates, with maximum positive values in the fall, and low or negative rates in winter. Net ammonification rates, which were significantly correlated to soil moisture content, were significantly smaller and showed smaller seasonal fluctuations and fewer differences among peat materials than net nitrification rates. Furthermore, the contribution of net nitrification to total net mineralization rates was characteristically higher than what is typically observed in undisturbed boreal forest soils. Taken together, results indicate that net nitrification processes may control nitrogen availability in these reclaimed soils.Key words: Soil nitrogen, soil reclamation, nitrification, mineralization, boreal soils

Does the surface treatment affect the bond strength of various fibre-post systems to resin-core materials?

2011 ◽  
Vol 39 (2) ◽  
pp. 171-179 ◽  
Author(s):  
Isil Cekic-Nagas ◽  
Elcin Sukuroglu ◽  
Senay Canay
Keyword(s):  
Bond Strength ◽  
Surface Treatment ◽  
Resin Core ◽  
Core Materials

scholarly journals Regional perfusion of pelvis and abdomen by an indirect technique

Cancer ◽  
1963 ◽  
Vol 16 (5) ◽  
pp. 567-582 ◽  
Author(s):  
Walter Lawrence ◽  
Bayard Clarkson ◽  
Matthew Kim ◽  
Paul Clapp ◽  
H. T. Randall
Keyword(s):  
Regional Perfusion ◽  
Indirect Technique

scholarly journals A Comparative Evaluation of Fracture Resistance of Endodontically Treated Teeth restored with Composite Resin Core using Two Different Designs of Prefabricated Metal Posts: An in vitro Study

2017 ◽  
Vol 7 (2) ◽  
pp. 97-102
Author(s):  
Sabita M Ram ◽  
Naisargi Shah ◽  
Amit M Gaikwad
Keyword(s):  
Fracture Resistance ◽  
Comparative Evaluation ◽  
Composite Resin ◽  
Fracture Load ◽  
Endodontically Treated Teeth ◽  
Group I ◽  
Resin Core ◽  
Post And Core ◽  
The Mean

ABSTRACT Aim To comparatively evaluate the fracture resistance of endodontically treated teeth restored with light-cured composite resin core using two different designs of prefabricated metal posts. Materials and methods A total of 30 single-rooted anterior teeth were selected for the study and endodontically treated. Teeth were sectioned 2 mm above the cementoenamel junction and were randomly divided into two groups (n = 15). Teeth in group I were restored with Parallel post—EG post and group II with parallel post with coronal flare—i post. Light-cured composite core buildup was done in all samples using a customized core former. Compressive load was applied at a 135° angle to the long axis of the tooth at a cross-head speed of 1 mm/minute until visible signs of fracture were observed. Levene's test and t-test were used to determine the difference of the failure loads between the groups (α = 0.05). Results The mean values (standard deviation [SD]) for fracture resistance were 295.55 N and 469.59 N for parallel post—EG post and parallel post with coronal flare—i post respectively. Since the p-value for the t-test is less than 0.05, it indicates that we should reject null hypothesis and conclude that the mean fracture load of parallel post with coronal flare—i post is significantly more than that of mean fracture load of parallel post—EG post. Conclusion The study conducted evaluated that the fracture resistance of endodontically treated teeth with parallel post with coronal flare—i post and core buildup had better strength as compared with parallel post—EG post and core buildup. Clinical significance The present study will help the clinician to select the appropriate prefabricated metal post that will fit exactly into the coronal flare of the canal improving clinical performance, thus increasing the longevity of the restoration. How to cite this article Gaikwad AM, Shah N, Ram SM. A Comparative Evaluation of Fracture Resistance of Endodontically Treated Teeth restored with Composite Resin Core using Two Different Designs of Prefabricated Metal Posts: An in vitro Study. J Contemp Dent 2017;7(2):97-102.

scholarly journals ANALISIS KESULITAN BELAJAR SISWA PADA MATA PELAJARAN KIMIA KELAS X DI SMA NEGERI 1 SUNGAI AMBAWANG

2017 ◽  
Vol 5 (2) ◽  
Author(s):  
Yakina Yakina ◽  
Tuti Kurniati ◽  
Raudhatul Fadhilah
Keyword(s):  
Influential Factor ◽  
School Teachers ◽  
Internal Factors ◽  
Average Percentage ◽  
Communication Techniques ◽  
Chemistry Learning ◽  
Qualitative Descriptive ◽  
Indirect Technique ◽  
Descriptive Method ◽  
Family Condition

ABSTRACTThis study aimed at discovering the students’ in chemistry class at grade X of SMA Negeri 1Sungai Ambawang. A qualitative descriptive method was employed in this study. As many as62 students participated as the subjects. Two techniques were used in this study. They weremeasurement and indirect communication techniques. The indirect technique used 30 testquestions and 30 items of questionnaire. The result of analysis indicated that the students who had problems in understanding the terms were 48,99 %, the students who had problem in understanding the concept were 41,32%, and the students who had problems in calculating were 70,97%. The results of the questionnaire showed that the internal factors of motivation and interest were 59,25%. This is considered as the influential factor in the students’ difficulties. While the external factor, with the average percentage of 85,4% deal with the students’ difficulties were family, facilities and infrastructures, family condition, school, teachers, learning facilities, school building, mass media, and neighborhood. This is considered as the factor that didn’t influent the students’,difficulties in chemistry class.Keywords: Analysis, learning difficulties, chemistry learning

scholarly journals Clinical Performance of Composite Using Direct and Indirect Technique

2019 ◽  
Vol 3 (2) ◽  
pp. 62-67
Author(s):  
Nisha Garg ◽  
◽  
Ishman Kaur Saini ◽  
Ajay Chhabra ◽  
Amandeep Singh Uppal ◽  
...  
Keyword(s):  
Clinical Performance ◽  
Indirect Technique

scholarly journals Tesserae on Venus may preserve evidence of fluvial erosion

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
S. Khawja ◽  
R. E. Ernst ◽  
C. Samson ◽  
P. K. Byrne ◽  
R. C. Ghail ◽  
...  
Keyword(s):  
Climate Models ◽  
High Surface ◽  
Climatic Conditions ◽  
Tectonic Deformation ◽  
Fluvial Erosion ◽  
Global Circulation ◽  
Global Circulation Models ◽  
Research Theme ◽  
Wet Climate ◽  
Indirect Technique

AbstractFluvial erosion is usually assumed to be absent on Venus, precluded by a high surface temperature of ~450 °C and supported by extensive uneroded volcanic flows. However, recent global circulation models suggest the possibility of Earth-like climatic conditions on Venus for much of its earlier history, prior to catastrophic runaway greenhouse warming. We observe that the stratigraphically oldest, geologically most complex units, tesserae, exhibit valley patterns morphologically similar to the patterns resulting from fluvial erosion on Earth. Given poor topographic resolution, we use an indirect technique to recognize valleys, based on the pattern of lava flooding of tesserae margins by adjacent plains volcanism. These observed valley patterns are attributed to primary geology, tectonic deformation, followed by fluvial erosion (and lesser wind erosion). This proposed fluvial erosion in tesserae provides support for climate models for a cool, wet climate on early Venus and could be an attractive research theme for future Venus missions.

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