Metallicity and Binarity in WC and WO Stars

Median values of the fwhm and equivalent width Wλ of the C iv 581 nm, O v 559 nm and 465 nm emission lines were derived from an extended statistical analysis of WC and WO stars (Norci et al. 2002; see Table 1). We find that the C iv equivalent width shows an increasing trend towards earlier WC subtypes, reaching a maximum value of 95 nm (± 32 %) for the Galactic WC4-6 stars, and decreases by about a factor of three in the hotter WO stars (Figure 1, left). The line appears about twice as strong in the LMC than in the Galactic WC4 stars, and the difference is particularly evident in the non-Galactic WO stars. Such an effect is absent in the O v 559 nm line, which smoothly increases towards WCE and WO stars, with no significant difference between Galactic and non-Galactic WC4 and WO stars. Thus this C anomaly is not an ionization effect; it is, therefore, probably due to a cause that selectively operates on C rather than on O. Different physical conditions in the winds of Galactic and non-Galactic stars, possibly related to the different initial metallicity Z, could be responsible for the anomaly.

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Analysis of the breeding records of a herd of pigs

The Journal of Agricultural Science ◽

10.1017/s0021859600045731 ◽

1954 ◽

Vol 45 (1) ◽

pp. 19-27 ◽

Cited By ~ 10

Author(s):

R. Braude ◽

P. M. Clarke ◽

K. G. Mitchell

Keyword(s):

Statistical Analysis ◽

Large White ◽

Seasonal Differences ◽

Significant Difference ◽

The Mean ◽

The Difference ◽

Length Of Gestation

1. A survey and. statistical analysis of the records of litters born in the N.I.R.D. herd of Large White pigs over a period of 16 years are presented.2. The mean length of gestation was 114 days for both gilts and sows.3. The mean numbers of pigs born alive and born dead per litter from gilts, 10·0 and 0·2 respectively, were both significantly smaller than the corresponding figures for sows, 11·8 and O·8. No seasonal differences were found.4. The mean total losses of pigs from birth to weaning at 8 weeks were 29·5% of pigs born alive. The losses in litters from gilts, 23·0%, were significantly smaller than in litters from sows, 31·0%. The losses during the winter months both for gilts, 32·5%, and for sows, 35·9%, were significantly higher than during the summer months, 19·4% and 26·7% for gilts and sows respectively.5. Over 50% of the total losses were due to crushing by the dam, 74·1% of the losses from this cause occurring during the first 48 hr. after birth.6. The mean number of pigs weaned per litter was 8·0. The difference between the number weaned per litter from gilts, 7·7, and per litter from number of pigs was weaned per litter from sows during the summer months, 8·7, than during the winter months, 7·4.7. There was no significant difference between the number of male and of female pigs weaned.8. The mean weight at weaning was 29·9 lb., male pigs, 30·3 lb., being significantly heavier than females, 29·51b. Pigs in litters from gilts, 27·81b., were significantly lighter at weaning than those from sows, 30·0 lb., and for both gilts and sows, pigs reared during the summer months, 29·7 and 31·8 lb. respectively, were significantly heavier than those reared during the winter months, 25·9 and 28·2 lb. respectively.

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Fuel and lubricant consumption in felling the young oak-hornbeam stands

Glasnik Sumarskog fakulteta ◽

10.2298/gsf0286059b ◽

2002 ◽

pp. 59-66

Author(s):

Vojislav Bajic ◽

Milorad Danilovic

Keyword(s):

Statistical Analysis ◽

Analysis Of Variance ◽

Unit Area ◽

Function Form ◽

Tree Diameter ◽

Significant Difference ◽

The Difference ◽

Level Of Significance ◽

Average Consumption

Based on the elements of statistical analysis on the dependence of fuel and lubricant consumption on tree diameter, it was assessed that with the increase of tree diameter, the fuel and lubricant consumption in the young oak and hornbeam stands decreases significantly, both in clear felling and in thinning and that the function form Y=exp(a+b x X?1) is the best description of the correlation The consumption of fuel compared to lubricant consumption is almost double, which agrees with the results of the previous studies. Average consumption of fuel and lubricant is 17.43 mL x tree?1, on the plots 20.27 mL x tree?1, average consumption of lubricant per tree on skid roads is 9.4 mL x tree?1, on the plots 11 mL x tree?1. The higher consumption of fuel and lubricant on the plots with selective thinning is the consequence of the longer time needed for the conversion per tree, compared to that in clear felling The consumption of fuel per unit area on the skid roads (clear felling) is 22.9 L x ha?1, on the plots (selective thinning) 7.6 L x ha?1. The consumption of lubricant on the skid roads is 13.3 L x ha?1, on the plots 4.29 L x ha?1. The higher consumption of fuel and lubricant per unit area on the skid roads is due to the difference in the number of trees per unit area Based on the results of the analysis of variance, it was found out that between fuel and lubricant consumption in selective thinning and in felling the trees along tractor skid roads there is no statistically significant difference at the level of significance of 95%. So, for practical purposes, the unique norms of consumption can be established for the stands similar to those in which the study was performed.

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Influence of Dental Composite Viscosity in Attachment Reproduction: An Experimental in Vitro Study

Materials ◽

10.3390/ma12234001 ◽

2019 ◽

Vol 12 (23) ◽

pp. 4001

Author(s):

Vincenzo D’Antò ◽

Simone Muraglie ◽

Beatrice Castellano ◽

Ettore Candida ◽

Maria Francesca Sfondrini ◽

...

Keyword(s):

In Vitro Study ◽

Dental Composite ◽

Maximum Deviation ◽

Force System ◽

Maximum Value ◽

Significant Difference ◽

The Difference ◽

Level Of Significance ◽

The Ideal

Background: Attachments are composite auxiliaries that are used during a clear aligner orthodontic therapy to achieve difficult tooth movements. Two important factors are the planned configuration and the actual position of these auxiliary elements to obtain the desired force system. The aim of the present study was to evaluate the role of different composite materials in the correct reproduction of attachment shape and position. Methods: The materials that were considered in the study were a flowable resin, a dental restorative material, and an orthodontic composite. The attachments were created on three models of extracted teeth. Once the impressions were performed, 25 attachments of different shapes were added onto each virtual model to obtain the necessary templates to make the attachments. Each tested material was used to create a set of 25 attachments that were then scanned with an accuracy of 10μm. The resultant STL (stereolithography) files were superimposed onto the ones from the initial virtual plan, through Geomagic software, and the aligned scans were then compared while using a color map. The parameters that were calculated to make a comparison between the created attachments and the ideal ones were the maximum deviation in defect and in excess, the overflow, and the volume’s difference. In addition to these measurements comparing the three above-mentioned groups, the difference in volume between all the ideal and realized samples were analyzed. To test for differences among the three groups, a one-way Analysis of variance (ANOVA) was used with a Bonferroni post-hoc test. The level of significance was set at p < 0.05. Results: No statistically significant results were found between the three groups regarding the maximum value in defect, the maximum value in excess, and the minimum value as control, while a statistically significant difference was found between the overflow of orthodontic resin when compared to the flowable composite. Conclusions: The three materials that were used in this study were appropriate for attachment fabrication. The fidelity of attachment reproduction was similar when using the three different composites. The orthodontic composite showed more overflow when compared with the flowable one.

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Physical education and sports students’ attitudes towards inclusive education (The sample of Kocaeli University)

Journal of Human Sciences ◽

10.14687/jhs.v13i2.3667 ◽

2016 ◽

Vol 13 (2) ◽

pp. 2839 ◽

Cited By ~ 1

Author(s):

Mensure Aydın ◽

Nejat İra ◽

Bergün Meriç Bingül ◽

Çiğdem Bulgan

Keyword(s):

Statistical Analysis ◽

Physical Education ◽

Inclusive Education ◽

Personal Information ◽

Attitude Scale ◽

Arithmetic Average ◽

Education Class ◽

Significant Difference ◽

The Difference ◽

Students Attitudes

The aim of this study was to observe if Physical Education and Sports students’ attitudes towards Inclusive Education differ or not. The research was done according to the scanning/screening model. “Personal information form” (2004) - (reformed by Orel and his friends) and “Attitude Scale related to Inclusion” (1995)-(reformed by Antonak & Larivee and adapted into Turkish by Kırcaali & Iftar ) were used for Kocaeli University School of Physical Education and Sports /Physical Education and Sports Department’s 1st grade and the 2nd grade students (121 students) who didn’t take the Inclusive Education class and the 3rd and 4th grade students (193 students) who took the Inclusive Education class. In the statistical analysis of the research, frequency values of the data (which were obtained from personal information forms) were surveyed and while analysing the data (obtained from the attitude scale related to inclusion) arithmetic average, standard deviation and t test (for the difference between two groups ) were applied.In statistical analysis and in all parameters numerical difference was seen on the side of the students who took inclusive education class but no statEistically significant difference was found . (P<0,05). As a result, it can be said that Inclusive Education class had a positive change on the attitudes of Physical Education teacher candidates towards inclusion.

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Nationalism Among Students: A Comparison Between Students of Islamic Junior High School and Students Of Junior High School in Serang Municipality and Serang Regency

Al-Ulum ◽

10.30603/au.v15i2.203 ◽

2015 ◽

Vol 15 (2) ◽

pp. 299

Author(s):

Anis Fauzi

Keyword(s):

High School ◽

Statistical Analysis ◽

Junior High School ◽

Junior High ◽

Student Groups ◽

Large Group ◽

Average Value ◽

Significant Difference ◽

The Mean ◽

The Difference

This article aims to explore the nationalism among students Islamic Junior High School (MTs) and Junior High School (SMP) in the District of Serang and Serang Municipality. Statistical analysis show that in order to find a comparison between the national insight MTs and SMP students in research location by using Test 't' to sample a large group. Based this study, it is concluded that there was no significant difference between the nationalistic viewpoint MTs and SMP students in Serang Municipality with MTs and SMP students in Serang District. However, basing on the difference between the average value the mean between the two groups of respondents turned out to mean price MTs and SMP student groups in Serang City (204.235) were slightly larger than the mean price of MTs and SMP school student groups in the district of Serang (203.765).

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Saliva secretion difference before and after rinsing with baking soda on menopause women

Padjadjaran Journal of Dentistry ◽

10.24198/pjd.vol19no1.14178 ◽

2007 ◽

Vol 19 (1) ◽

Author(s):

Dewi Anggraeni ◽

Sri Tjahajawati ◽

Rosiliwati Wihardja

Keyword(s):

Statistical Analysis ◽

Flow Rate ◽

Volume Flow Rate ◽

Volume Flow ◽

Survey Method ◽

Average Volume ◽

Saliva Secretion ◽

Significant Difference ◽

Before And After ◽

The Difference

Menopause women can experience a decrease in saliva secretion (decrease). To understand the clear picture about saliva secretion, the volume, flow rate, pH and viscosity were then measured. The aim of this research was to obtain a picture about the difference of saliva secretion before and after rinsing with baking soda on menopause women. The type of the research used was a laboratory quasi-experiment with comparative descriptive form. The technique used in this research is the survey method, and samples were taken using the multistage cluster random sampling method, and t-student statistical analysis. This research was conducted with the saliva collected with spitting method on 45 menopause women. The results show that the average volume, flow rate, pH and viscosity before rinsing with baking soda was 1.79 ml, 0.18 ml/minute, 7.40 and 0.81 mm2/second. The average volume, flow rate, pH and viscosity after rinsing with baking soda were 2.66 ml; 0.27 ml/minute; 8.67 and 0.78 mm2/second. Statistical analysis t-student on α = 0.05 shows volume changes, flow rate, pH and saliva viscosity before and after rinsing with baking soda was 0.873; 0.086; 1.273 and 0.037 respectively. The conclusion shows a significant difference between saliva secretion before and after rinsing with baking soda, and saliva secretion after rinsing with baking soda on menopause women.

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Emotional Stability of Day Scholars and Boarders Adolescent Boys: A Study

Asian Journal of Education and Social Studies ◽

10.9734/ajess/2020/v11i430298 ◽

2020 ◽

pp. 26-31

Author(s):

Savita Sharma

Keyword(s):

Statistical Analysis ◽

Sampling Technique ◽

Emotional Stability ◽

T Test ◽

Stability Test ◽

Adolescent Boys ◽

Purposive Sampling ◽

The Earth ◽

Significant Difference ◽

The Difference

Emotions are found in all living beings of the earth and our most powerful force that influence actions. As emotional stability refers to the person's ability to remain stable and balanced, the life of adolescents a very much influenced by the emotions and instincts. The emotional changes during adolescence include anxiety, agitation, fear, anger, pleasure, love, envy, and competitions. The present study examines the difference between boarding and day scholars adolescent boys in terms of emotional stability and medium. The sample of the study consists of 24 boarders and 28- day scholars. A purposive sampling technique was used. The data was collected using an Emotional Stability Test for Children (ESTC). Statistical analysis was done using a t-test. The findings indicated a significant difference between boarding and day scholar adolescent boys concerning emotional stability and no significant difference was found in the emotional stability of adolescent boys concerning medium.

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Mechanical Deformation of Leadframe Assemblies in Plastic Packages During Molding

Journal of Electronic Packaging ◽

10.1115/1.2905430 ◽

1991 ◽

Vol 113 (4) ◽

pp. 421-425 ◽

Cited By ~ 8

Author(s):

E. Suhir ◽

L. T. Manzione

Keyword(s):

Process Parameters ◽

State Of The Art ◽

Mechanical Deformation ◽

Flow Front ◽

Transfer Molding ◽

Plastic Packages ◽

Maximum Value ◽

Significant Difference ◽

The Difference ◽

Maximum Stresses

We evaluate the maximum stresses and deflections in electric leads subjected to flow induced forces during transfer molding of plastic packages. It is found that lead deflection is proportional to the fifth power of the lead length and the inverse third power of lead thickness. These dependencies explain why it is more difficult to mold high pin count packages which have significantly longer and thinner leads to accommodate the higher interconnection density. In addition we find that the maximum value of the elastic lead deformation is about 0.9 mm (35 mils) for large state-of-the-art packages; exceeding this value causes permanent (plastic) lead distortion that compromises the symmetry of the package. We find also that minimizing the difference in flow front locations through careful gate design, and lowering the velocity over the leads by using balanced mold filling can make a significant difference in lead deformation. The results obtained are useful in establishing the appropriate geometry of the leads, as well as in choosing the materials and process parameters, so that excessive stresses and lead deflections can be avoided.

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Statistical Analysis of Outpatients Trends at Korean Medicine Hospitals of Daejeon University by Region before and after COVID-19

Journal of Korean Medicine ◽

10.13048/jkm.21023 ◽

2021 ◽

Vol 42 (3) ◽

pp. 26-43

Author(s):

Hyun Ji Cha ◽

Beom Seok Kim ◽

Ki Jung Sung ◽

Young Rok Lee ◽

Hyeon Kyu Choi ◽

...

Keyword(s):

Statistical Analysis ◽

Medical Records ◽

Statistical Difference ◽

Care Utilization ◽

Korean Medicine ◽

Number Of Patients ◽

Significant Difference ◽

Before And After ◽

The Difference ◽

Analyze Data

Objectives: This study is designed to statistically analyze data of outpatients visiting for recent 3 years. The purpose is to identify tendencies of patients who visit the hospitals before and after COVID-19. Methods: This study retrospectively analyzed the medical records of 452,487 patients who visited to the Daejeon·Cheonan·Cheongju Korean Medicine Hospital of Daejeon University from January 1, 2018 to August 31, 2020. The data is classified according to year, month, gender, age, and visit type. The statistical analysis was performed using IBM SPSS 25.0. Results: The total number of patients decreased in 2020 compared to before 2020, and the number of patients in each hospital also decreased from the previous year. According to the year of each hospital, the difference by year was not statistically significant at Daejeon Hospital, but Cheonan and Cheongju Hospital showed statistical difference. The change in monthly according to the year by hospital has continued to decrease from January to March in 2020, unlike the previous year, which recovered from a decline in March. In the analysis of patients by age, there was no statistically significant difference in the number of patients in the above 60s according to the year, while those under 60s have a tendency to significantly decrease.. Conclusion: We expect that the results of this study will be used as reference materials in analyzing effects of COVID-19 at health care utilization.

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Microleakage under ceramic flash-free orthodontic brackets after thermal cycling

The Angle Orthodontist ◽

10.2319/021016-115.1 ◽

2016 ◽

Vol 86 (6) ◽

pp. 905-908 ◽

Cited By ~ 1

Author(s):

Julia Kim ◽

Georgios Kanavakis ◽

Matthew D. Finkelman ◽

Moonyoung Lee

Keyword(s):

Methylene Blue ◽

Statistical Analysis ◽

Thermal Cycling ◽

Laboratory Setting ◽

Methylene Blue Solution ◽

Significant Difference ◽

Blue Solution ◽

Maxillary Premolars ◽

The Difference ◽

Bracket Base

ABSTRACT Objective: To compare microleakage under 3M Unitek's APC Flash-Free Adhesive Coated System bracket and the APC PLUS Adhesive Coated System bracket after thermal cycling. Materials and Methods: Forty freshly extracted human maxillary premolars were randomly divided into two groups and bonded with either a Flash-Free bracket or a PLUS bracket. After bonding, the samples were incubated in a water bath at 37°C for 24 hours and thermocycled for 5000 cycles between 5°C and 50°C. All teeth were immersed in a 2% methylene blue solution for 24 hours, embedded in acrylic and sectioned in a buccolingual direction at approximately the center of the bracket. Microleakage was observed at the enamel-adhesive interface from the occlusal and gingival margins of the bracket base. Statistical analysis was conducted using the Mann-Whitney U-test. Results: The median microleakage was higher in the Flash-Free group, but the difference between the two groups was not statistically significant (P > .05). Conclusion: In a laboratory setting, there is no significant difference between the extent of microleakage under the APC Flash-Free Adhesive Coated System bracket and the APC PLUS Adhesive Coated System bracket after thermal cycling.

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