Search results for "centi"
showing 10 items of 642 documents
External and internal exposure to polycyclic aromatic hydrocarbons (PAH) among workers in the production of fire-proof materials – Proposal of a biol…
2006
In 1999, we introduced the German polycyclic aromatic hydrocarbons (PAH) study. The study was designed as a nation-wide investigation on workers exposed to PAH. One aim of the study was to establish biological monitoring guidance values (BMGVs) for different branches. Here, we report on the production of fire-proof materials. This branch of industry is typically confronted with high exposure to PAH and with PAH-induced occupational (cancer) diseases. One hundred and thirty-five employees participated in the course of seven sampling dates in four different plants in Germany. External exposure was determined by personal air monitoring of the 16 EPA-PAH. Human biological monitoring was accompl…
Trait-specific tracking and determinants of body composition: a 7-year follow-up study of pubertal growth in girls
2008
Abstract Background Understanding how bone (BM), lean (LM) and fat mass (FM) develop through childhood, puberty and adolescence is vital since it holds key information regarding current and future health. Our study aimed to determine how BM, LM and FM track from prepuberty to early adulthood in girls and what factors are associated with intra- and inter-individual variation in these three tissues. Methods The study was a 7-year longitudinal cohort study. BM, LM and FM measured using dual-energy X-ray absorptiometry, self-reported dietary information, leisure time physical activity (LTPA) and other factors were assessed one to eight times in 396 girls aged 10 to 13 years (baseline), and in 2…
Four-phase rhinomanometry: a multicentric retrospective analysis of 36,563 clinical measurements
2015
Rhinomanometry can still be considered as the standard technique for the objective assessment of the ven- tilatory function of the nose. Reliable technical requirements are given by fast digital sensors and modern information technology. However, the xyimaging of the pressure-flow relation typically shows loops as a sign of hysteresis, with the need for resolution of the breath in four phases. The three pillars of 4-phase rhinomanometry (4PR) are the replacement of estimations by measurements, the introduc- tion of parameters related to the subjective sensing of obstruction, and the graphical information regarding the disturbed function of the nasal valve. In a meta-analysis of 36,563 clini…
Biomonitoring of bisphenols A, F, S in human milk and probabilistic risk assessment for breastfed infants
2019
The present study addresses the presence of bisphenols A (BPA) and its analogs bisphenol F (BPF) and S (BPS) in milk of 120 mothers living in Valencia (Spain) and participating in the BETTERMILK project (year 2015). We also studied the factors that could influence the BPA levels and estimated the exposure and the risk for breast fed infants. The frequency of detection of total (conjugated + unconjugated) and unconjugated-BPA were 83% and 77%. with a geometric mean of 0.29 ng/mL and 0.15 ng/mL, respectively. The frequency of detection was much lower for total-BPF (22%) and total-BPS (1.1%). The place of residence of the mother and the use of personal care products showed significant associat…
The effective group size for teaching cardiopulmonary resuscitation skills – A randomized controlled simulation trial
2021
Abstract Aim of the study The ideal group size for effective teaching of cardiopulmonary resuscitation is currently under debate. The upper limit is reached when instructors are unable to correct participants’ errors during skills practice. This simulation study aimed to define this limit during cardiopulmonary resuscitation teaching. Methods Medical students acting as simulated Basic Life Support course participants were instructed to make three different pre-defined Basic Life Support quality errors (e.g., chest compression too fast) in 7 min. Basic Life Support instructors were randomized to groups of 3–10 participants. Instructors were asked to observe the Basic Life Support skills and …
Adultescenti e giovani adulti. Aspetti educativi della famiglia “lunga”
2019
The essay starts as a reflection about the changes of the transition to adulthood in contemporary life, it is a presentation focusing on the issue of identity construction in relation to the structural variables that condition the lifestyle of the young adult and their relationship with the family of origin. The adult’s task is a generative task aimed to increase and develop the next generation; therefore, we speak about a task that delineates itself as essentially educational. However, the discussion allows to see an education requirement/emergency that is not only young people but also adults; there is a priority to educate the adult society to take and rewrite their generative role.
Recatalogación de Vella lucentina M.B. Crespo (Cruciferae) según las categorías UICN (2001)
2006
Vella lucentina es un endemismo del centro de la provincia de Alicante que habita en matorrales esteparios calcícolas, bajo bioclima termomediterráneo semiárido. Su fragmentada área de ocupación apenas alcanza tres kilómetros cuadrados y se encuentra sometida a una fuerte presión antrópica, por lo que hasta el momento se tiene como especie “vulnerable” (VU), según las categorías de amenaza de la UICN. Sin embargo, últimamente se ha constatado una merma en la calidad de su hábitat y la desaparición de algunos núcleos poblacionales secundarios, a causa a actividades urbanísticas que amenazan a las restantes poblaciones. Los trabajos que se vienen realizando en los últimos meses sobre la biolo…
Water Consumption and Management in Schools in the City of Alicante (Southern Spain) (2000–2017): Free Water Helps Promote Saving Water?
2020
Studies on water in cities usually focus on household consumption. However, little attention has been given to non-household consumption and schools from a geographic perspective. The objectives of this research are to examine water consumption trends in schools in the city of Alicante (Southern Spain) between 2000&ndash
Life Cycle Assessment of an Ambitious Renovation of a Norwegian Apartment Building to nZEB Standard
2018
Author's accepted manuscript. The upgrading of building infrastructure to modern standards represents a key tool for reducing global energy demand and emissions from buildings. In Norway, building upgrades have been prioritized despite the relatively low carbon intensity of the Norwegian energy mix through various incentive programs and continual improvement in building standards. Prioritizing upgrades is important as up to 90% of the existing Norwegian building stock is expected to remain standing by the year 2050. The overall impact of upgrading buildings is expected to be a net benefit to the environment but this is primarily in operation, and many studies on energy do not include the ma…
El aprendizaje a distancia y los adolescentes en el momento de la pandemia: espacialidad e interacciones
2021
Il capitolo esplora alcune modalità attraverso cui gli studenti adolescenti hanno vissuto e stanno vivendo lunghi periodi di apprendimento a distanza a causa delle misure anti-pandemia. Lo studio qui proposto si basa su una ricerca che ho condotto nel 2021 con un approccio geografico e semiotico in una scuola secondaria di Palermo. I destinatari sono sette studenti dello stesso anno scolastico, di età compresa tra i 16 e i 17 anni, a cui è stato chiesto di elaborare un breve testo che descrive come avevano affrontato in tutto o in parte i periodi di formazione a distanza. El objetivo de este trabajo es explorar algunas de las formas en que los estudiantes adolescentes han vivido y están exp…