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1. Maximizing pulp output and quality through measurement of plate gap temperature in high-consistency refining

Author

Fredrikson, Antti, Paltakari, Jonni, A Fredrikson Research & Consulting Ltd., Paper Converting and Packaging, Department of Bioproducts and Biosystems, Aalto-yliopisto, and Aalto University

Subjects
Plate gap, stomatognathic diseases, Energy efficiency, Temperature measurement, stomatognathic system, Thermomechanical pulping, High-consistency refining, Consistency
Abstract

The largest mechanical pulp production units are high-consistency refiners. In the high-consistency refiners, in-situ measurements of pulp quality are rare. Temperature profile is one of the measurements that is industrially applicable to estimate pulp quality. It measures the steam temperature in the refining area-but how it can detect deteriorated pulp quality will be shown. This paper analyzed the high-consistency refiner plate temperature and its correlation to pulp quality in a 1.34 MW pilot-scale Sunds RGP-44 variable speed refiner in a variety of operating conditions and particularly at production rates close to maximum refiner capacity. The study showed that there was a narrow band of optimal refining conditions at the maximum refiner production level just before pulp quality drastically decreased. When the refiner was pushed above this optimal point of operation, the plate temperature rapidly increased above normal refining temperature, causing reduction of fiber length and consequently lower pulp strength and quality. Thus, refiner plate temperature measurement was found to be a quick way and an effective tool for preventing low-quality pulp production through overloading the refiner.

Published
2020

2. Cluster Analysis of Physical Activity Patterns, and Relationship with Sedentary Behavior and Healthy Lifestyles in Prepubertal Children: Genobox Cohort

Author

Gloria Bueno, Francisco Jesus Llorente-Cantarero, Concepción M. Aguilera, Juan Jose Bedoya-Carpente, Augusto Anguita-Ruiz, Mercedes Gil-Campos, Jose Manuel Jurado-Castro, Rosaura Leis, Azahara Iris-Rupérez, Rocío Vázquez-Cobela, Universidade de Santiago de Compostela. Departamento de Ciencias Forenses, Anatomía Patolóxica, Xinecoloxía e Obstetricia, e Pediatría, [Leis,R, Bedoya-Carpente,JJ, Vázquez-Cobela,R] Unidad de Investigación en Nutrición, Crecimiento y Desarrollo Humano de Galicia, Departamento de Pediatría, Hospital Clínico Universitario de Santiago, Universidad de Santiago de Compostela, IDIS, Santiago de Compostela, Spain. [Leis,R, Llorente-Cantarero,FJ, Anguita-Ruiz,A, Vázquez-Cobela,R, Aguilera,CM, Bueno,G, Gil-Campos,M] CIBEROBN, (Physiopathology of Obesity and Nutrition) Institute of Health Carlos III (ISCIII), Madrid, Spain. [Jurado-Castro,JM, Gil-Campos,M] Metabolism and Investigation Unit, Reina Sofia University Hospital, Maimónides Institute of Biomedicine Research of Córdoba (IMIBIC), University of Córdoba, Córdoba, Spain. [Llorente-Cantarero,FJ] Department of Artistic and Corporal Education, Faculty of Education, University of Córdoba, Córdoba, Spain. [Anguita-Ruiz,A, Aguilera,CM] Department of Biochemistry and Molecular Biology II, Institute of Nutrition and Food Technology 'José Mataix', Center of Biomedical Research, University of Granada, Armilla, Granada, Spain. [Anguita-Ruiz,A, Aguilera,CM] Instituto de Investigación Biosanitaria ibs, Granada, Spain. [Iris-Rupérez,A] GENUD Research Group, University of Zaragoza, Instituto Agroalimentario de Aragón (IA2), Instituto de Investigación Sanitaria (IIS) Aragón, Zaragoza, Spain. [Bueno,G] Unidad de Endocrinología Pediátrica, Hospital Clínico Lozano Blesa, Facultad de Medicina, Universidad de Zaragoza, Zaragoza, Spain., and This work was supported bythe Plan Nacional de Investigación Científica, Desarrollo e InnovaciónTecnológica (I + D + I), Instituto de Salud Carlos III-Health Research Funding (FONDOS FEDER) (PI051968, PI1102042 and PI1600871) and Redes temáticas de investigación cooperativa RETIC (Red SAMID RD12/0026/0015). The authors also acknowledge Instituto de Salud Carlos III for personal funding of A.A.-R: Contratos i-PFIS: doctorados IIS empresa en ciencias y tecnologías de la salud de la convocatoria 2017 de la Acción Estratégica en Salud 2013–2016 (IFI17/00048).This paper will be included in J.M.J.-C. doctorate, under the 'Social and Legal Sciences Program' at theUniversity of Córdoba, Spain.

Subjects
Male, obesity, Mediterranean diet, Health Behavior, Obesidad, Child Behavior, Diet, Mediterranean, Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Primates::Haplorhini::Catarrhini::Hominidae::Humans [Medical Subject Headings], Cohort Studies, 0302 clinical medicine, Surveys and Questionnaires, Cluster Analysis, Insulin, 030212 general & internal medicine, skin and connective tissue diseases, Child, Chemicals and Drugs::Lipids::Glycerides::Triglycerides [Medical Subject Headings], Nutrition and Dietetics, exercise, Psychiatry and Psychology::Behavior and Behavior Mechanisms::Behavior::Health Behavior [Medical Subject Headings], Analytical, Diagnostic and Therapeutic Techniques and Equipment::Therapeutics::Nutrition Therapy::Diet Therapy::Diet, Mediterranean [Medical Subject Headings], Analytical, Diagnostic and Therapeutic Techniques and Equipment::Equipment and Supplies::Electrical Equipment and Supplies [Medical Subject Headings], Conducta sedentaria, Ejercicio físico, Cardiovascular diseases, Psychiatry and Psychology::Behavior and Behavior Mechanisms::Behavior::Child Behavior [Medical Subject Headings], Cohort, Analytical, Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Epidemiologic Methods::Data Collection::Health Surveys::Nutrition Surveys::Diet Surveys [Medical Subject Headings], Female, Anthropology, Education, Sociology and Social Phenomena::Human Activities::Leisure Activities::Recreation::Sports [Medical Subject Headings], Club, Enfermedades cardiovasculares, lcsh:Nutrition. Foods and food supply, Sports, musculoskeletal diseases, Electrical Equipment and Supplies, Anatomy::Digestive System::Pancreas::Islets of Langerhans::Insulin-Secreting Cells [Medical Subject Headings], Physical activity, Check Tags::Male [Medical Subject Headings], 030209 endocrinology & metabolism, lcsh:TX341-641, Analytical, Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Epidemiologic Methods::Statistics as Topic::Cluster Analysis [Medical Subject Headings], Disease cluster, Article, Information Science::Information Science::Data Collection::Questionnaires [Medical Subject Headings], 03 medical and health sciences, Screen time, Environmental health, Anthropology, Education, Sociology and Social Phenomena::Human Activities::Exercise [Medical Subject Headings], medicine, Humans, Persons::Persons::Age Groups::Child [Medical Subject Headings], Healthy Lifestyle, Obesity, Exercise, Triglycerides, business.industry, Psychiatry and Psychology::Behavior and Behavior Mechanisms::Psychology, Social::Life Style [Medical Subject Headings], Anthropometry, medicine.disease, Dieta mediterránea, cardiovascular diseases, stomatognathic diseases, Check Tags::Female [Medical Subject Headings], Analytical, Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Epidemiologic Methods::Epidemiologic Study Characteristics as Topic::Epidemiologic Studies::Cohort Studies [Medical Subject Headings], Sedentary Behavior, business, Food Science
Abstract

The authors would like to thank the children and parents who participated in the study and Ana Yara Postigo-Fuentes for the assistance with the English editing., Sedentary habits during childhood are associated with adverse health outcomes. The aim of this work was to cluster lifestyle behaviors and metabolic biomarkers to establish different patterns in children. Their physical and sedentary activities were evaluated by accelerometry, and questionnaires that included lifestyle behaviors, such as adherence to a Mediterranean diet, anthropometry and blood biochemical markers. Cluster analysis was performed to establish different groups based on physical activity levels. A total of 489 children were finally selected. Cluster 1 included children with a mostly sedentary state, whereas Cluster 3 included the most active children and Cluster 2 included children that did not fit into either the sedentary or the highly active groups. In Cluster 3, 56% of children were in a sports club, and a lower percentage used electronic devices in their rooms compared to the other groups. Cluster 1 children exhibited higher insulin, HOMA-IR and triacylglycerides with respect to the other groups. No differences were found regarding adherence to a Mediterranean diet. The choice to practice an extracurricular sport could be an influencing factor to increase exercise and ensure an active lifestyle in children. Reducing or limiting screen time mainly in children’s rooms could contribute to an active lifestyle., Plan Nacional de Investigacion Cientifica, Desarrollo e InnovacionTecnologica (I + D + I), Instituto de Salud Carlos III-Health Research Funding (FONDOS FEDER) PI051968 PI1102042 PI1600871, Redes tematicas de investigacion cooperativa RETIC (Red SAMID) RD12/0026/0015, Instituto de Salud Carlos III IFI17/00048

Published
2020