Search results for " strenght"

Speciation of chitosan with low and high molecular weight carboxylates in aqueous solution

2009

Quantitative data on the speciation of chitosan (310 kDa) with low and high molecular weight carboxylates in aqueous solution are reported. The following carboxylic ligands were considered: monocarboxylate (butyrate); dicarboxylates (malonate, succinate, azelate); tricarboxylate (1,2,3-propa- netricarboxylate); tetracarboxylate (1,2,3,4-butanetetracarboxylate); polyacrylates (2.0 and 20 kDa); polymethacrylate (5.4 kDa). The investigation was performed by potentiometry at t 1/4 25 C, at low ionic strength (without addition of supporting electrolyte) and at I 1/4 0:15 mol L 1 (NaCl). For all the systems the formation of (chitosan)LHi species was found (L 1/4 carboxylic ligand; i 1/4 1 to 4 de…

Self strengthening, Load Bearing Ionic Liquid Gels for Environmental Remediation

Long-term strength and balance training in prevention of decline in muscle strength and mobility in older adults

2018

Background. Reductions in muscle strength and poor balance may lead to mobility limitations in older age. Aims. We assessed the effects of long-term once-weekly strength and balance training (SBT) on muscle strength and physical functioning in a community-based sample of older adults. Methods. 182 individuals [130 women and 52 men, mean age 80 (SD ± 3.9) years] underwent supervised SBT as part of the Geriatric Multidisciplinary Strategy for the Good Care of the Elderly study. Training was offered once a week for 2.3 years. Isometric knee extension and flexion strength, chair rise, maximal walking speed, timed up and go (TUG) and Berg Balance Scale (BBS) were measured at baseline, after 2-ye…

Perspectives on Aerobic and Strength Influences on Military Physical Readiness: Report of an International Military Physiology Roundtable

2015

Physical fitness training of military recruits is an enduring focus of armies. This is important for safe and effective performance of general tasks that anyone may have to perform in a military setting as well as preparation for more specialized training in specific job specialties. Decades of studies on occupationally specific physical requirements have characterized the dual aerobic and strength demands of typical military tasks; however, scientifically founded strategies to prepare recruits with a good mix of these 2 physiologically opposing capabilities have not been well established. High levels of aerobic training can compromise resistance training gains and increase injury rates. Re…

Exercise, Sports & Cardiovascular Health: Relevant Questions and Answers

2019

Introduction Currently, it is quite common for a clinical cardiologist to be questioned about exercise and sports, topics that are rarely discussed during formal medical education. In this regard, there is a clear need to access high-quality data and evidence-based information to give patients and family members the best advice. Aiming to present the state-of-the art scientific information on the topic, we have invited several experts from different countries, all of them “knowledge-producers” in exercise and sports cardiology, to contribute [...]

Assessment of push-out test response of hybrid steel trussed-concrete beams by FE model

2013

Aiming to investigate the truss-concrete stress transfer mechanism in Hybrid Steel Trussed-Concrete Beams (HSTCBs), a three-dimensional nonlinear FE model is developed. The constitutive laws of the steel composing the plates and the bars is modeled by means of a quadri-linear law, while the concrete behavior is defined by means of a Concrete Damaged Plasticity (CDP) model, suitable for modeling concrete and brittle materials. The CDP model uses the concept of isotropic damaged elasticity in combination with isotropic tensile and compressive plasticity and is able to properly account for the concrete confinement effect. Two main failure mechanisms are considered, namely the tensile cracking …

Effects of a constant and incremental workload training protocol on upper body strenght gains

2011

Note brevi a margine della proposta "Cartabia" di riforma della prescrizione penale

2021

Il contributo analizza i profili critici ed i punti di forza della proposta di riforma "Cartabia" in materia di prescrizione penale.

El impacto de la diversidad generacional, de género y en el nivel de cualificación sobre el engagement de los trabajadores: la influencia de los HPWS…

2021

A lo largo del siglo XXI se han producido cambios tanto de índole tecnológica como económica, política, social y cultural afectando, consecuentemente, a los estilos de vida y a las prácticas de gestión de las organizaciones. Todos estos cambios han dado lugar, entre otros, a un aumento de la diversidad tanto en la sociedad como en las organizaciones. Por primera vez en la historia, las empresas pueden encontrar en su fuerza laboral la presencia de cuatro e incluso cinco generaciones diferentes, junto con la presencia de diversidad de género y heterogeneidad de empleados con diversas cualificaciones. Los tres tipos de diversidades organizativas no son autoexcluyentes, sino que todas ellas co…

Fracture strenght and ribbond fibers: In vitro analysis of mod restorations

2023

Ribbond fibers are supposed to be a reinforcing material in restoration of compromised teeth. This study aims to compare MOD restorations with and without Ribbond Fiber in terms of fracture strength under axial loading; to identify the minimum depth of MO