scholarly journals Measuring Aerodynamic Interference Drag Between a Bird Body and the Mounting Strut of a drag Balance

1990 ◽  
Vol 154 (1) ◽  
pp. 439-461 ◽  
Author(s):  
VANCE A. TUCKER
Keyword(s):  
Reynolds Numbers ◽  
The Body ◽  
Peregrine Falcon ◽  
Rigid Surface ◽  
Hand Tools ◽  
Cross Sectional ◽  
Straight Line ◽  
Aerodynamic Interference ◽  
The Relationship

1. The drag of a bird body mounted on the strut of a drag balance in a wind tunnel is more than the sum of the drags of the isolated strut and the isolated body. The strut changes the air flow around the body and generates additional drag, known as interference drag. This paper describes practical methods for measuring the drag of bird bodies: a strain-gauge drag balance, dimensions for struts made with machine or hand tools, and a procedure for correcting drag measurements for interference drag. 2. Interference drag can be measured by extrapolating a relationship between the drag of isolated struts with different crosssectional sizes and shapes and the drag of a body mounted on those struts. The interference length the length of an isolated strut that produces drag equal to the interference drag is a usefulquantity for predicting interference drag. 3. The relationship mentioned above is a straight line for a model peregrine falcon (Falco peregrinus L.) body mounted on smooth struts struts with convex cross-sectional shapes ranging from streamlined to circular. This finding simplifies the determination of interference drag in three ways: (i) the line can be found from measurements with just two struts a standard strut with low drag and a calibration strut with high drag; (ii) the two struts need not have the same shape for example, the standard strut can be changed to a calibration strut by attaching a spoiler without disturbing the body mounted on the strut and (iii) a single value of interference length (33.1mm) describes smooth struts with a range of shapes and sizes. These struts had drag coefficients between 0.33 and 0.91 at Reynolds numbers between 2100 and 10800. 4. The interference length of a strut supporting the actual falcon body with a feathered surface is not significantly different from that of the strut supporting the model body with a rigid surface. 5. As a hypothesis, interference length (hI, in metres) of a smooth strut varieswith the size of the body mounted on it: hI=0.0365m0.333 where m is the body mass (in kg) of the intact bird.

Gender determination of caucasoid hair using image analysis

1993 ◽  
Vol 51 ◽  
pp. 216-217
Author(s):  
T.B. Ball ◽  
W.M. Hess
Keyword(s):  
Image Analysis ◽  
Cross Sections ◽  
Scalp Hair ◽  
The Body ◽  
Equivalent Diameter ◽  
Cross Sectional ◽  
Hair Samples ◽  
Length Width ◽  
Morphological Differences

It has been demonstrated that cross sections of bundles of hair can be effectively studied using image analysis. These studies can help to elucidate morphological differences of hair from one region of the body to another. The purpose of the present investigation was to use image analysis to determine whether morphological differences could be demonstrated between male and female human Caucasian terminal scalp hair.Hair samples were taken from the back of the head from 18 caucasoid males and 13 caucasoid females (Figs. 1-2). Bundles of 50 hairs were processed for cross-sectional examination and then analyzed using Prism Image Analysis software on a Macintosh llci computer. Twenty morphological parameters of size and shape were evaluated for each hair cross-section. The size parameters evaluated were area, convex area, perimeter, convex perimeter, length, breadth, fiber length, width, equivalent diameter, and inscribed radius. The shape parameters considered were formfactor, roundness, convexity, solidity, compactness, aspect ratio, elongation, curl, and fractal dimension.

scholarly journals Relationship between Body Mass Index and Tooth Decay in a Population of 3–6-Year-Old Children in Iran

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Leila Shafie Bafti ◽  
Maryam Alsadat Hashemipour ◽  
Hamidreza Poureslami ◽  
Zeinab Hoseinian
Keyword(s):  
Body Weight ◽  
Analytical Study ◽  
Deciduous Teeth ◽  
Tooth Decay ◽  
Cross Sectional ◽  
Dmft Index ◽  
The Mean ◽  
Iranian Children ◽  
The Relationship

The aim of the present study was to evaluate the relationship between BMI and tooth decay in a population of Iranian children. In this cross-sectional descriptive/analytical study, 1482 children were selected from kindergartens and preschool centers in Kerman, Iran. The children underwent examination of deciduous teeth (using the dmft index) after determination of height and weight for calculation of BMI. The relationship between BMI (after adjustment for age) and dmft was determined using Poisson’s regression model. The mean of dmft in children with normal BMI was 1.5-fold that in subjects with extra body weight. Age had a significant effect on dmft. In addition, dmft was higher in boys compared to girls. The results of the present study showed that caries rate in the deciduous teeth of 3–6-year-old children decreases with an increase in body weight.

scholarly journals HUBUNGAN ANTARA ASUPAN ENERGI DENGAN STATUS GIZI MAHASISWA PROGRAM STUDI PENDIDIKAN DOKTER ANGKATAN 2013 FAKULTAS KEDOKTERAN UNIVERSITAS SAM RATULANGI

2014 ◽  
Vol 2 (1) ◽  
Author(s):  
Irene Ubro
Keyword(s):  
Energy Intake ◽  
Significant Relationship ◽  
Nutrient Intake ◽  
The Body ◽  
Nutrition Status ◽  
Rank Test ◽  
P Value ◽  
Cross Sectional ◽  
Spearman Rank ◽  
The Relationship

Abstract: Humans need a certain amount of energy in order to support the growth and activity. Energy can arise due to combustion derived from carbohydrates, fats and proteins in foods consumed by the body, therefore to have enough energy one should consume enough and balanced food.Nutritional status is a state of the body that is the final result of a balance between the nutrients into the body and its utilization. Adolescence (10-19 years) is a period that is often prone to nutritional problems, because in this period there is less and over nutrient intake. This study aims to determine the relationship between energy intake and Student’s Nutrition Status of  Faculty of Medical Education, University of Sam Ratulangi Manado Year 2013. This study was an observational analytic using cross - sectional approach. Results of statistical analysis using the Spearman rank test shows that, the value of the correlation coefficient (r) of - 0.234 on IMT and 0.077 on WHR and p value of < α = 0.05 on IMT and 0.514 > α = 0.05 on WHR. From the results it is concluded that there is a significant relationship between energy intake with BMI, while the relationship between energy intake with WHR there is no significant relationship. Keywords : Energy Intake, Nutritional Status    Abstrak: Manusia membutuhkan energi dalam jumlah tertentu guna untuk menunjang proses pertumbuhan dan melakukan aktifitas. Energi dapat timbul karena adanya pembakaran yang diperoleh dari karbohidrat, lemak dan protein dalam makanan yang di konsumsi oleh tubuh, karena itu agar energi tercukupi perlu  mengkonsumsi makanan yang cukup dan seimbang. Status gizi adalah keadaan tubuh yang merupakan hasil akhir dari keseimbangan antara zat gizi yang masuk ke dalam tubuh dan utilisasinya.Masa remaja (10-19 tahun) merupakan masa yang sering rentan terhadap masalah gizi, dikarenakan pada masa ini terjadi asupan gizi kurang dan asupan gizi lebih. Penelitian ini bertujuan untuk mengetahui hubungan asupan energi dengan status gizi pada mahasiswa Program Studi Pendidikan Dokter Angkatan 2013 Fakultas Kedokteran Universitas Sam Ratulangi Manado. Penelitian ini bersifat observasional analitik dengan menggunakan pendekatan cross-sectional (potong lintang). Kesimpulan: Hasil analisis statistik dengan menggunakan uji spearman rank menunjukkan bahwa, nilai koefisien korelasi (r) sebesar -0,234 pada IMT dan 0,077 pada WHR serta nilai p sebesar < α = 0,05 pada IMT dan 0,514 > α = 0,05 pada WHR. Dari hasil tersbut disimpulkan bahwa ada hubungan bermakna antara asupan energi dengan IMT sedangkan hubungan antara asupan energi dengan WHR tidak terdapat hubungan yang bermakna. Kata Kunci : Asupan Energi, Status Gizi

IS DISTRIBUTION OF PAIN RELATED WITH CENTRAL SENSITIZATION IN PATIENTS WITH LOWER LIMB OSTEOARTHRITIS?

2021 ◽  
pp. 2150019
Author(s):  
Andriana Koufogianni ◽  
Asimakis K. Kanellopoulos ◽  
Konstantinos Vassis ◽  
Ioannis A. Poulis
Keyword(s):  
Lower Limb ◽  
Central Sensitization ◽  
Rating Scale ◽  
Cross Sectional Study ◽  
The Body ◽  
Cross Sectional ◽  
Numeric Pain Rating Scale ◽  
The Relationship ◽  
Pain Distribution

Design: Cross-sectional study. Background: Osteoarthritis is one of the most common conditions in our society. A growing number of studies suggest the existence of central sensitization (CS) in a subgroup of osteoarthritic patients. One of the criteria included for the classification of CS pain is the expanded distribution of pain. As this criterion is a well-recognized sign of CS, a digital pain drawing (DPD) analysis would be useful to easily identify possible extended areas of pain distribution (PD) in patients with OA. Objective: To study the relationship between the percentage of distribution of pain in the lower limb for both knee and hip, in patients before hip or knee arthroplasty, and the Central Sensitization Inventory Questionnaire. Methods: Twenty women (mean [Formula: see text] years) with diagnosed chronic (over 3 months) knee ([Formula: see text]) and hip ([Formula: see text]) OA participated in the study, with intensity of pain from mild to severe, meaning pain [Formula: see text]/10 using the Numeric Pain Rating Scale (NPRS). The PD was analyzed via software created for this research, called “Pain Distribution Application”. Results: A statistically significant positive correlation between CSI and PD to the lower extremity OA (hip and knee) ([Formula: see text], [Formula: see text]) was found. The distribution of pain has a linear correlation with the results in CSI, of patients who tested positive for CS, i.e. with a score of [Formula: see text]. Conclusions: As the distribution of pain on the surface of the body (diffusion) increases, so does the score of people who test positive for CSI. Our results showed that calculating the distribution of pain with our application may have a utility as a CS screening tool. The PD threshold of 10% of the body area is an index for CS for chronic pain lower limb OA patients.

scholarly journals Prevalence of Obesity and the Relationship between the Body Mass Index and Body Fat: Cross-Sectional, Population-Based Data

PLoS ONE ◽  
2012 ◽  
Vol 7 (1) ◽  
pp. e29580 ◽  
Author(s):  
Julie A. Pasco ◽  
Geoffrey C. Nicholson ◽  
Sharon L. Brennan ◽  
Mark A. Kotowicz
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Body Fat ◽  
Population Based ◽  
The Body ◽  
Cross Sectional ◽  
Prevalence Of Obesity ◽  
The Relationship

The indirect determination of energy retention in farm animals: I. The development of method

1956 ◽  
Vol 48 (2) ◽  
pp. 194-209 ◽  
Author(s):  
K. L. Blaxter ◽  
J. A. F. Rook
Keyword(s):  
Water Content ◽  
Allantoic Fluid ◽  
The Body ◽  
Farm Animals ◽  
High Concentration ◽  
Adult Cattle ◽  
Indirect Determination ◽  
Energy Retention ◽  
The Relationship

1. Methods of estimating water retention in the body of cattle are discussed, and it is shown that methods based on determinations of the initial and final body-water content are of low accuracy and are not suitable for the indirect estimation of fat balance over a period of 24 days.2. Analyses of tissues from young and adult cattle showed that with the exception of serum, brain, skin and bone, water content of the tissues may be predicted from the following equation:Water(g./100g.) = 0·292 Na(mg./100g.) + 0·147 K(mg./100g.).This equation shows that 1 m.equiv. of the Na of tissues is associated with more water than is 1 m.equiv. of the K.3. No differences between cattle aged from less than 1 week to more than 5 years were observed in the relationship between water and Na and K content.4. The equation applied also to the contents of the digestive tract, other than those of the abomasum which gave low results, ascribed to the presence of a high concentration of H+ ions.5. Analyses of whole foetuses for Na, K and H2O showed that their water content could be predicted accurately. The same was true of amniotic fluid, but the water content of allantoic fluid was underestimated by 50%.6. It was shown that despite the anomalous behaviour of brain, serum, skin and bone, accurate predictions of the water content of the animal could be made from simultaneous determinations of Na and K retentions, providing a correction was made for the storage of bound Na in bone.7. Data are presented which indicate that the equations apply equally well to the tissues of the sheep.

scholarly journals Relationship Between Gender, Age, Duration And Frequency Of Hemodialysis Therapy With The Creatinine Level reduction Of Pre And Post Hemodialysis

2019 ◽  
Vol 5 (1) ◽  
pp. 41
Author(s):  
Anny Thuraidah ◽  
Misbawati Misbawati ◽  
Nurlailah Nurlailah ◽  
Haitami Haitami
Keyword(s):  
Creatinine Level ◽  
Sampling Technique ◽  
The Body ◽  
P Value ◽  
Acid Base Balance ◽  
Cross Sectional ◽  
Significant Difference ◽  
Patient Will ◽  
Base Balance ◽  
The Relationship

The kidneys are organs of the body that function to regulate water balance in the body, the concentration of electrolytes in the blood and acid-base balance and secretion of waste material. If the kidney fails to function, the patient will need immediate treatment and even undergo hemodialysis (HD) therapy. A critical indicator in determining whether a person with impaired kidney function requires HD therapy is to know the creatinine level. The study aimed to ascertain the differences in creatinine levels pre and post HD also study the relationship between the age, gender, duration and frequency of HD therapy of respondents with the decrease of creatinine levels pre and post. Type of research detailed survey with a cross-sectional design. The sample was taken using a total sampling technique of 35 respondents from H BadaruddinKasimHospitalin Tanjung with a sample examination technique using the Jaffe method. The examination results of creatinine levels average for pre and post hemodialysis was11,36 and 5,58 mg/dl, which decreased 51%. The analysis statistically used Paired T-Test has a p-value = 0,000, indicating a significant difference for creatinine levels pre and post HD. Relationship between Age, Gender, Duration, and Frequency of HD Therapy with the decrease of creatinine levels pre and post HD was analyzed with Spearmen correlation and had p values more than 0,05. It means there was no relation between them. Conclusion there were significant differences in creatinine levels reduction pre and post HD while the relationship between the four of respondent characteristics to the magnitude of creatinine reduction show that there was no significant relationship.

scholarly journals Correlation of Glycemic and Lipid Control Parameters with Cognitive Dysfunction Scores, in Type 2 Diabetic Persons Results from a cross- sectional study

2019 ◽  
Vol 69 (12) ◽  
pp. 3486-3489
Author(s):  
Gina Botnariu ◽  
Alina Popa ◽  
Geta Mitrea ◽  
Marius Manole ◽  
Mariana Pacurar ◽  
...  
Keyword(s):  
Cognitive Dysfunction ◽  
Cross Sectional Study ◽  
The Body ◽  
Sectional Study ◽  
Cross Sectional ◽  
Type 2 Diabetics ◽  
Lipid Control ◽  
High Density Cholesterol ◽  
The Relationship

Diabetes-related cognitive dysfunction is considered a long-term complication of diabetes. In this cross-sectional study was studied the relationship between cognitive dysfunction (assessed by using two standardized questionnaires), lipid profile parameters and fatty free acids intake, in outpatients, hospitalized for their periodical control. The Mini-Mental State Exam (MMSE) and The Montreal Cognitive Assessment (MoCA) score were related to the body mass index (BMI), high density cholesterol (HDLc), glycated hemoglobin (Hb A1c) and intake of choline and eicosapentaenoic acid (all Ps [ .05, excepting the relationship between MMSE and HDLc). The implications of FFA intake in dementia development, in type 2 diabetics, is important for disease management and prevention.

scholarly journals PENGETAHUAN DAN PERAN IBU DALAM PENGENALAN SISTEM REPRODUKSI SEJAK DINI PADA ANAK USIA PRASEKOLAH (3-5 TAHUN) DI WILAYAH KERJA PUSKESMAS BERINGIN RAYA KOTA BENGKULU

2018 ◽  
Vol 6 (1) ◽  
Author(s):  
Neti Herawati
Keyword(s):  
Sexual Abuse ◽  
Preschool Children ◽  
Reproductive System ◽  
Sampling Technique ◽  
Reproductive Organs ◽  
The Body ◽  
Chi Square ◽  
Cross Sectional ◽  
The Relationship

Rampant cases of child sexual abuse in Indonesia to be the most worrying at this time, this was due to the lack of parents inintroducing reproductive system to children early because it was considered as taboo, parents only introduces the name of non genital parts of the body. In the city of Bengkulu sexual abuse of children each year increase. This study aimed to know the relationship between knowledge and the role of mothers in the introduction of the reproductive system early at the age of preschool children (3-5 years) in Beringin Raya Health Center.This study used a descriptive analytic method with cross sectional rangcangan. The population of this study were mothers of preschool children (3-5 years) in Beringi Raya Health Center Bengkulu City. The sampling technique used was proportional random sampling with data analysis using univariate and bivariate.Univariate analysis research results obtained over the majority of respondents (56.0%) had less knowledge about the reproductive system, the majority of respondents (72.0%) had less good role, and the majority of respondents (70.30%) were less in giving recognition to their reproductive system and test results statictik chi-square value of ρ value of knowledge gained 0,047 and the role ρ values obtained value of 0.021. Expected to teachers in kindergartens to provide education about reproduction on children and mothers of students to introduce the reproductive organs.

scholarly journals The Relationship between Duration of Benzene Exposure with Liver Enzymes in Car Painting Workshop Workers

2021 ◽  
Vol 10 (3) ◽  
pp. 361
Author(s):  
Fitri Yatulaini ◽  
Abdul Rohim Tualeka ◽  
Juliana Jalaludin ◽  
Syamsiar S Russeng
Keyword(s):  
The Body ◽  
Observational Research ◽  
P Value ◽  
Test Results ◽  
Cross Sectional ◽  
Exact Test ◽  
Benzene Exposure ◽  
Measurement Results ◽  
Basic Parameters ◽  
The Relationship

Introduction: Benzene is a carcinogenic compound that can be found in a car painting workshop in Surabaya. The source of benzene in the car painting workshop comes from thinners. Inhalation is the main route for benzene to enter the body. The duration of benzene exposure can affect the accumulation of benzene concentrations. If work safety is not considered, the benzene compound can cause the liver disease. Furthermore, SGOT and SGPT are basic parameters of liver function. The study aims to determine the relationship between the duration of benzene exposure with SGOT and SGPT levels in car painting workshop workers. Method: observational research with a cross-sectional approach was applied as the method of this study. The research was conducted in a car painting workshop in 2019 with 20 workers. The variables were the duration of benzene exposure (hours/day) and levels of SGOT and SGPT. Data analysis used the Fisher's Exact Test and Coefficient Contingency test. Results: Workers worked with a duration of benzene exposure ≤ 8 hours/day by 70% and > 8 hours/day by 30%. The measurement results exceeded the normal limit with the value of SGOT of 15% and the SGPT of 30%. Furthermore, the Sstatistical test show p-values between the duration of benzene exposure and SGOT (0.202) and SGPT (0.303), body weight with SGOT (1.000) and SGPT (1.000), education with SGOT (0.199) and SGPT (0.182) and alcohol consumption with SGOT (1.000) and SGPT (1.000). Conclusion: There was no relationship between the duration of benzene exposure with SGOT and SGPT levels in car painting workshop workers in Surabaya with a p-value >0.05.Keywords: car painting workers, duration of benzene exposure, SGOT, SGPT 

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