Rock bolting has firmly used as the coal mine roof reinforcement in underground coal mine. The bolting effect of fully grouted rebar bolt is closely related to the bolt surface profile. This paper provides an experimental study to confirm that bolt rib internal length has great influence on bolting effect. Pull-out tests were conducted using rebar bolt with different rib spacings of 12, 24, 36 ...

OBJECTIVE Our aim was to evaluate whether high-resolution sonography can provide additional information concerning rib lesions compared with radiography or bone scintigraphy. MATERIALS AND METHODS Fifty-eight patients with high-uptake rib lesions seen on bone scintigraphy were selected. Radiography and rib high-resolution sonography were performed on these patients. High-resolution sonography...

This paper considers the aeroelastic optimization of a subsonic transport wingbox under a variety of static and dynamic aeroelastic constraints. Three types of design variables are utilized: structural variables (skin thickness, stiffener details), the quasi-steady deflection scheduling of a series of control surfaces distributed along the trailing edge for maneuver load alleviation and trim at...

The conformational properties of Ac-∆(Me)Ala-NHMe (N-acetyl-N-methyl-α,β-dehydroalanine N’methylamide), as the simplest model of N-methyl-α,β-dehydroamino acids, was examined with theoretical methods and in comparison with Ac-∆Ala-NHMe and Ac-∆Ala-NMe2. The N-terminal amide of the ∆(Me)Ala residue easily adopts the configuration cis and the torsion angles φ, ψ are highly flexible. The ∆(Me)Ala ...

Rib osteomyelitis is a rare disease, occurring in ~1% or less of all cases of haematogenous osteomyelitis. During the last century, 58 cases of rib osteomyelitis were reported in the literature, of which, multiple ribs were involved in only five patients. Because of its rarity and non-specific clinical signs, diagnostic of rib osteomyelitis may be delayed. We report a case of multifocal rib ost...

This paper describes a simple method for the recording of rib deformity in idiopathic scoliosis. The relationships have been recorded between the measured rib hump and rib depression deformities and I) the rotation of the vertebral bodies (as measured by the method of Nash and Moe on the standing radiograph); 2) the degree of lateral curvature (as measured by the method of Cobb on the standing ...

Abstract Additive manufacturing provides the possibility for innovative structural configurations promoting optimized material use economy and sustainability, new functions which are not available traditional products. This paper explores to wire‐and‐arc directed energy deposition process fabrication of WAAM stiffener thin plated structures. The proposed solution is demonstrated in several geom...

Objectives: The aims of this study were to evaluate the efficacy of conservative treatment in patients with and without cervical ribs and Thoracic Outlet Syndrome (TOS). From so many kinds of conservative treatment in literature, we used a multidisciplinary approach (correction of posture, maximizing muscle endurance and power, stretch shorten muscles, massage for trigger points and maximize th...

A cervical rib generally arises from the seventh cervical vertebra and is known as an anomalous accessory rib or “Eve’s rib” [1]. A recent literature survey reported that cervical ribs are present in less than 1% of the normal population and are asymptomatic in about 90% of cases [2]. Complete cervical ribs are fused with the tubercle on the upper aspect of the first thoracic rib, very close to...

diced rib cartilage is an acceptable option in severe nasal deformities. we present our preliminary experience in kamc in nasal septoplasties using the autologous diced costal cartilage. this is a retrospective study of the 22 cases who needed the autologous diced costal cartilage in our centre in 4 years. all our patients needed autologous diced rib cartilages. twelve were wrapped with tempora...