A lack of agreement exists in the literature regarding the anatomical relationship of the mandibular canal to its surrounding structures such as the root apices. The purpose of this investigation was to study the spatial relationship of the mandibular canal to the posterior teeth in dried human mandibles. Twenty-two mature dried mandibles were sectioned through the root apices of the first and ...

A recently much debated issue is why observed investment and growth rates in poor countries are lower than traditional theory predicts. Empirical evidence suggests that social and political instability is a major reason for the divergence between poor and rich countries. However, there is still the unsolved puzzle that the relationship between development and investment rates is not monotonic b...

The complex behaviour of human walking with respect to movement variability, economy and muscle activity is speed dependent. It is well known that a U-shaped relationship between walking speed and economy exists. However, it is an open question if the movement dynamics of joint angles and centre of mass and muscle activation strategy also exhibit a U-shaped relationship with walking speed. We i...

The effect of the distribution primary phase Si and TiB2 particles in hypereutectic Al-Si alloy was studied found to be influenced by cooling rate. Therefore, this article studies rate on multi-phase structure Al-20Si using a wedge-shaped mold. sizes, shapes, inside were observed through SEM. cracks nanoindentation technology, interface relationship between TEM. Finally, based experimental resu...

Since China entered the stage of high-quality development, how to promote economic development and high-level protection ecological environment in a coordinated manner implement new concept “innovation, coordination, green, openness, sharing” is country’s problem need break through. Based on connotation evolutionary logic environmental regulation, this paper attempts build more scientific indic...

This paper is a reassessment of underlying factors of juvenile delinquency in the purview of Covid-19. The study tries to judge the relationship between juvenile delinquency and impact of media, heredity, environment, time, age, school performance, economic status, association etc. The significance of the relationships has been tested. Moreover, attempt has been made to study the influence of t...