Monilethrix or beaded results from a genetic abnormality of defective hair shaft formation. The altered genetics leads to improper, inefficient, incorporation of structural proteins, minerals during hair shaft formation resulting in weak, brittle hair. Other hair shaft disorders like pili torti, pili trianguli, trichorrhexis nodosa, trichorrhexis invaginata and pili annulati, rolled hair and ci...

The activities of mining exploitation in Campo de Jales were performed in an uncontrolled way and gave rise to serious environmental contamination: rubbish depositories have been accumulated with no treatment or maintenance. An investigation developed around Jales Mine showed the existence of some chemical impact originated from the waste produced during mining activities. Some "black spots" fo...

Treatment of Displaced diaphyseal femoral shaft fracture in children between 3 to 13 years is controversial. Various methods are available for treatment. Titanium elastic nailing is one of the methods for treatment of femur shaft fracture in children. In our study we have assessed the outcome of titanium elastic nailing for fracture shaft femur in children. We have found that titanium elastic n...

In this paper, bispectral analysis of vibration signals is used to assess health conditions of different rotatingcomponents in an AH-64D helicopter tail rotor drive train. First, cross-bispectral analysis is used to investigate drive-shaft faulted conditions -namely misalignment, imbalance, and a combination of misalignment and imbalance -with respect to a baseline case. The magnitude of the cr...

this study was carried out for the purpose of investigating the issue of tailings dams as a potential source of contamination by trace elements in soils at the sidi bou othmane mine in the marrakech region, morocco. soil samples taken from depths of up to 15 cm and within a radius of 50 m from the tailings dams, were analyzed for cd, cu, pb and zn using atomic absorption spectrometry. average c...

Aiming at solving the problem of asymmetric deformation, failure, and stability control surrounding rock caused by excavation deep super large section soft chamber group passing through multilayer strata, taking connected vertical shaft in Wuyang Coal Mine as engineering background, deformation development mode rock, expansion situation loosening range, plastic failure response characteristics ...

The purpose of this study was to investigate the influence of shaft stiffness on grip and clubhead kinematics. Two driver shafts with disparate levels of stiffness, but very similar inertial properties, were tested by 33 golfers representing a range of abilities. Shaft deflection data as well as grip and clubhead kinematics were collected from 14 swings, with each shaft, for each golfer using a...

Metal price is one of the most important parameters in the calculation of cut- off grade. The cut- off grade has the main role in determination of mine layout. Mine layout actuates mineable reserve, mine life and economic profitability. Not considering the uncertainty in metal prices can lead to a non-optimal layout. In this paper optimum underground mine layout is determined by expected utilit...

As the main drive components of the automobile transmission, the performance of gear shaft plays an important role on transmission performance. Aiming at the existing problems of the traditional strength check method of gear shaft, the objective of this study is to take a five-speed transmission as an example, to accomplish the strength analysis of gear shaft of the automobile transmission base...