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Sections of the difference body [article]

M. Rudelson
1998 arXiv   pre-print
Let K be an n-dimensional convex body. Define the difference body by K-K= {x-y | x,y ∈ K }.  ...  We estimate the volume of the section of K-K by a linear subspace F via the maximal volume of sections of K parallel to F.  ...  To use random rotations for such an estimate one has to put the bodies into some specific positions. This can be achieved by comparison of the positions of the difference body and the body itself.  ... 
arXiv:math/9812008v1 fatcat:esysgj7275cibergkhdajtles4

Sections of the Difference Body

M. Rudelson
2000 Discrete & Computational Geometry  
Let K be an n-dimensional convex body. Define the difference body by We estimate the volume of the section of K − K by a linear subspace F via the maximal volume of sections of K parallel to F.  ...  We show that for small dimensions of F this estimate is exact up to a multiplicative constant.  ...  Acknowledgment The author thanks F. Barthe and the referees for their valuable remarks. 146 M. Rudelson  ... 
doi:10.1007/pl00009487 fatcat:svch2lyf5jg3pbnrw45pgby5ty

The imaginary and real velocity of an orbiting body based on different types of conics sections [article]

Andika Arisetyawan
2014 arXiv   pre-print
Based on it, I derived them to calculate the velocity and kinetic energy for different types of conics.  ...  The conics sections here (hyperbola and ellips) are generated by all maximum points of parabolas.  ...  Introduction The conic sections in physics play a fundamental role, any body under influence of inverse square law force must have a trajectory that is one of conics section (parabola, ellipse, circle  ... 
arXiv:1312.0967v2 fatcat:zadresamq5f5nmiaf2agassxhq

0991 Relationship between the microbiota in different sections of the gastrointestinal tract, and the body weight of broiler chickens

J. Lee, C. Kong
2016 Journal of Animal Science  
The objective of the present study was to investigate the relationship between microbiota and BW in different sections of the gastrointestinal tract (GIT).  ...  A total of twenty 18-day-old birds were selected based on the BW, and samples were collected from the three different sections of the GIT, which included the crop, ileum and cecum.  ...  This paper was supported by the KU Research Professor Program of Konkuk University.  ... 
doi:10.2527/jam2016-0991 fatcat:zrjefq2vsvbeledv64lretsrx4

Understanding Differences in the Body Burden–Age Relationships of Bioaccumulating Contaminants Based on Population Cross Sections versus Individuals

Cristina L. Quinn, Frank Wania
2012 Environmental Health Perspectives  
age and PCB body burden based on cross-sectional data collected at different points in time.  ...  Because the focus of the analyses was on the shape of the CBATs and not on absolute human body burdens, estimated body burdens for individual women (at different ages) were normalized to the average value  ...  Normalized body burden  ... 
doi:10.1289/ehp.1104236 pmid:22472302 pmcid:PMC3339463 fatcat:wy6qj3ti65gydmtvjilvhfiwdu

Dietary Behaviour in Students with Different Body Fat Percent

Rudīte Lagzdiņa, Leons Blumfelds, Maija Rumaka, Līga Aberberga-Augškalne
2013 Proceedings of the Latvian Academy of Sciences. Section B, Natural Sciences  
The aim of the present study was to determine whether energy intake, food diversity and corrective modification of body mass differed among student groups with low, normal and high body fat percentage.  ...  The results showed that 15% of students in the low, 38% in the normal and 62% in the high body fat percentage groups considered that they eat too much.  ...  The aim of the present study was to determine whether energy intake, food diversity and corrective modification of body mass differed among student groups with low, normal and high body fat percentage.  ... 
doi:10.2478/prolas-2013-0070 fatcat:ropr2h7uqrd2tcerbofh7uhnry

Relationship between the microbiota in different sections of the gastrointestinal tract, and the body weight of broiler chickens

Geon Goo Han, Eun Bae Kim, Jinyoung Lee, Jun-Yeong Lee, Gwideuk Jin, Jongbin Park, Chul-Sung Huh, Ill-Kyong Kwon, Dong Yong Kil, Yun-Jaie Choi, Changsu Kong
2016 SpringerPlus  
The objective of the present study was to investigate the relationship between microbiota and BW in different sections of the gastrointestinal tract (GIT).  ...  A total of twenty 18-day-old birds were selected based on the BW, and samples were collected from the three different sections of the GIT, which included the crop, ileum and cecum.  ...  This paper was supported by the KU Research Professor Program of Konkuk University.  ... 
doi:10.1186/s40064-016-2604-8 pmid:27386355 pmcid:PMC4927549 fatcat:kzi67qw44fghbnliibvcluqdq4

Ethnic Differences in Arterial Wave Reflection Are Mostly Explained by Differences in Body Height - Cross-Sectional Analysis of the HELIUS Study

Daan W. Eeftinck Schattenkerk, Jacqueline van Gorp, Marieke B. Snijder, Aeilko H. Zwinderman, Charles O. Agyemang, Ron J. G. Peters, Bert-Jan H. van den Born, Yan Li
2016 PLoS ONE  
Correction for cardiovascular risk factors only slightly reduced the difference in AIx, whereas correction for body height attenuated age and gender corrected ethnic differences in AIx the most.  ...  Differences in central systolic BP were primarily determined by differences in AIx for South-Asian Surinamese and by differences in peripheral systolic BP for subjects of African origin.  ...  Potential limitations of the study are its cross sectional nature and the fact that differences in ethnicity and migration history may not be generalizable to other migrant populations.  ... 
doi:10.1371/journal.pone.0160243 pmid:27472397 pmcid:PMC4966932 fatcat:xtrcuyxp3rcnxg6imiqka4ymzy

Correction: Ethnic Differences in Arterial Wave Reflection Are Mostly Explained by Differences in Body Height—Cross-Sectional Analysis of the HELIUS Study

Daan W. Eeftinck Schattenkerk, Jacqueline van Gorp, Marieke B. Snijder, Aeilko H. Zwinderman, Charles O. Agyemang, Ron J. G. Peters, Bert-Jan H. van den Born
2016 PLoS ONE  
in Body Height-Cross-Sectional Analysis of the HELIUS Study.  ...  in Arterial Wave Reflection Are Mostly Explained by Differences in Body Height-Cross- Sectional Analysis of the HELIUS Study.  ... 
doi:10.1371/journal.pone.0168620 pmid:27977786 pmcid:PMC5158071 fatcat:t7eix2e2njdqxfeos4lhj6u2ky

Difference Between Maternal Perception and Body Weight of Their Preschool and School Child Cross-Sectional Study in the Northeast of Mexico

Yolanda Flores-Peña, Hermelinda Avila-Alpirez, Perla M Trejo-Ortiz
2022 Current Developments in Nutrition  
Objectives 1) To examine differences between maternal perception of her child body weight (MPCW) and the child' nutritional status, 2) To verify if the underestimation is more frequent in mothers of preschool  ...  Conclusions Predominance of the underestimation of the child's weight was found, particularly in mothers of children are overweight-obesity, and even more notable in mothers of preschool children.  ...  Difference Between Maternal Perception and Body Weight of Their Preschool and School Child Cross-Sectional Study in the Northeast of Mexico Yolanda Flores-Peña, 1 Hermelinda Avila-Alpirez, 2 Perla M.  ... 
doi:10.1093/cdn/nzac065.014 fatcat:e4adyxzwwfeezegyhitxyq6cyi

Sex differences in body fat distribution and carotid intima media thickness: cross sectional survey using data from the British regional heart study

D. A Lawlor
2004 Journal of Epidemiology and Community Health  
Objective: To determine the role of central adiposity in explaining sex differences in carotid intima media thickness (IMT). Design: Cross sectional survey. Setting: Two British towns.  ...  Adjustment for body mass index and for lifestyle risk factors had very little effect on the sex difference in mean intima media thickness.  ...  participants of the British regional heart study.  ... 
doi:10.1136/jech.2003.014001 pmid:15252075 pmcid:PMC1732853 fatcat:cfpycpjtnvdkdf7it7awa4ydfa

Gender differences in the association between sleep duration and body mass index, percentage of body fat and visceral fat area among chinese adults: a cross-sectional study

Yaqi Fan, Li Zhang, Yuxue Wang, Chunjun Li, Binbin Zhang, Jiangshan He, Pei Guo, Xin Qi, Mianzhi Zhang, Congfang Guo, Yirui Guo, Minying Zhang
2021 BMC Endocrine Disorders  
This study aimed to explore the association between sleep duration and body mass index (BMI), percentage of body fat (PBF) and visceral fat area (VFA) among Chinese adults, further to explore gender difference  ...  Results A total of 9059 adult participants (63.08% were females) were included in the analysis. The participants aged from 19 to 91 years with the mean age of 45.0 ± 14.6 years.  ...  We sincerely thank all the study participants and the staff involved in facilitating and running the study.  ... 
doi:10.1186/s12902-021-00913-4 pmid:34952580 pmcid:PMC8709998 fatcat:3fkgexd44bg6lhlcqahrjohy64

Studies on N-metabolism in different gastrointestinal sections of sheep using the digesta exchange technique. 4. Whole body protein metabolism

A. Sandek, K. Krawielitzki, J. Kowalczyk, M. Gabel, T. Żebrowska, F. Kreienbring, H. Hagemeister, J. Voigt
2002 Journal of Animal and Feed Sciences  
Parameters of protein turnover were measured in sheep differing in postruminal secretion and reabsorption of nitrogen.  ...  As a result of the higher CF content, the intake of DM was lower in Group 2 than in Group 1 (616 vs 467 g x d" 1 ).  ...  It is a pleasure to acknowledge the constructive criticism of the manuscript by Cornelia C. Metges.  ... 
doi:10.22358/jafs/67913/2002 fatcat:fjqjo7sqffeqjowxc3wncedndy

How different data sources and definitions of neighbourhood influence the association between food outlet availability and body mass index: a cross-sectional study

Matthew Hobbs, Mark Green, Claire Griffiths, Hannah Jordan, Joanna Saunders, Jim McKenna
2016 Perspectives in Public Health  
4 Inconsistencies in methodologies continue to inhibit understanding of the impact of the environment on 5 body mass index (BMI).  ...  To estimate the effect of these differences we assessed the impact of using 6 different definitions of neighbourhood and datasets on associations between food outlet availability 7 within the environment  ...  to investigate the impact of differences in choice of data set and 41 definition of neighbourhood, we compared two different datasets of food outlet locations and three 42 different definitions of neighbourhood  ... 
doi:10.1177/1757913916650916 pmid:27282516 fatcat:d4vhmgoxwvbmjiijm5zakpiksq

Cultural differences in food and shape related attitudes and eating behavior are associated with differences of Body Mass Index in the same food environment: cross-sectional results from the Seafarer Nutrition Study of Kiribati and European seafarers on merchant ships

Joachim Westenhoefer, Robert von Katzler, Hans-Joachim Jensen, Birgit-Christiane Zyriax, Bettina Jagemann, Volker Harth, Marcus Oldenburg
2018 BMC Obesity  
Differences between the two groups were examined using t-tests and Chi-square-tests as appropriate.  ...  The present study examined differences in BMI and their association with weight, shape and nutrition related attitudes and perceptions among seafarer from Kiribati, a Pacific Island Group, and European  ...  Acknowledgments The authors thank the shipping company for their support and all seafarers for participating in this study.  ... 
doi:10.1186/s40608-018-0180-x pmid:29416869 pmcid:PMC5784660 fatcat:4ulm67n7zreq7buixfmze7rlrm
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