Recently, cooling fans have been used for not only general industrial machines but also precision machines, such as medical care products and optical equipment, and these generate more requirements about vibration limitations.The main vibration of cooling fans caused by rotating unbalance and resonance has been reduced, so electromagnetic induced v
A hierarchical age-structured model of optimal vermin management by contraception
Taking the reproduction law of vermin into consideration, we formulate a hierarchical age-structured model to describe the optimal management of vermin by contraception control.It is shown that the model is well-posed, and the solution here has a separable form.The existence of optimal management policy is established via a minimizing sequence and
What would the Marshal do?: Historical heroes as role models in contemporary martial arts
Many martial arts systems have their own revered heroes, such as mythical founders and leaders of notable schools.The paper draws on ethnographic research conducted on The Blade Academy, an expanding historical European martial arts (HEMA) ut solution gel for cats school in the United Kingdom.Among pedagogic strategies used by the lead instructors
Influence of NaOH treatment of rubber aggregates on the durability properties of rubberized mortars
The work presented in this paper aims to study the durability of mortars, in which part of the sand has been replaced with rubber aggregates from used tires and have undergone a surface treatment with a sodium hydroxide solution (NaOH).The substitution rates studied are 10%, 17.5%, here and 25%.The results are compared with ordinary mortar and mort