Middle upper beak fracture in a Red-crowned crane that completely recovered with external skeletal fixation

An adult Red-crowned crane in captivity that had a displaced compound fracture of the middle upper beak caused by an accident was treated by using Type I-a external skeletal fixator (ESF). The ESF that was equipped with a unilateral epoxy putty fixator and with five half-pins was fixed on the premaxilla bone. The crane with the ESF on the beak was able to feed smoothly by itself. The ESF was removed 49 days after the first surgery. Beak malocclusion, which was observed in the latter half period of fixing, spontaneously improved within one month after removal of the ESF. This is the first successful case of repair of an upper beak fracture in a Red-crowned crane.     

湿气输送管道爆裂原因分析与整改措施

系统分析了达县-卧龙河湿气管道爆裂的原因和干气管道内硫化铁粉尘产生的原因及其危害.指出提高施工质量是保证输气管道安全运行的关键,采用干气输送技术是提高管道输送效率、延长管道使用寿命的有效手段.针对减少管内粉尘、加强干气输送管道技术管理等问题,提出了可行性建议.     

FRACTURED SCLERAL OSSICLES IN A RED TAIL HAWK

Following head trauma, the left globe of a Red Tail Hawk showed demonstrable indentation on palpation. Recurrent anterior chamber collapse and reformation dependent on head position was the most significant clinical finding. A fracture of the scleral ossicles in the caudal portion of the scleral ring was identified in the rostrocaudal radiograph of the skull. Conservative management of the fracture resulted in phthisis bulbi. Fractured scleral ossicles have been shown radiographically in the enucleated globe but have not been previously demonstrated in the eye of the living bird.     

MAGNETIC RESONANCE IMAGING FOR THE DIAGNOSIS OF STRESS FRACTURES IN A HORSE

In humans, magnetic resonance (MR) imaging is the method of choice for the diagnosis of stress fractures. In this paper, bilateral stress fracture of the lateral condyle of the third metacarpal bone in a French trotter is described. Results of the radiographic, MR imaging, and histologic examinations are presented, with a focus on the MR signal abnormalities found. Based on this patient, the potential use of MR imaging for the diagnosis of stress fractures in horses is discussed.     

钢筋在坝体混凝土裂缝处理中的作用

混凝土裂缝的防治是水利水电建设中的一个棘手问题，对于寒冷地区的混凝土坝尤为突出。采用断裂力学的方法，探讨了钢筋对大体积混凝土裂缝的作用，在观音阁大坝裂缝处理中进行了应用研究，取得了良好效果，并得到了推广。     

Comparison between radiography and computed tomography for diagnosis of equine skull fractures

The equine head is a complex structure prone to traumatic injuries. To determine the value and limitations of radiography and (CT) for the diagnosis of skull fracture, the differences between the two modalities were described. Two observers retrospectively reviewed the radiographic and CT images of 18 horses with a skull fracture. To allow direct comparison between the two modalities, a simplified fracture classification system was used. In 3/18 cases the evaluation of the radiographic examination concluded no injuries visible. In 2/15 cases soft tissue involvement was not detected and in 7/15 cases the extension of the fracture was underestimated with radiography. Radiography classified 4/10 multiple fractures incorrectly as single fracture and 5/15 comminuted fractures on CT were diagnosed as simple fracture with radiography. The number of fragments was underestimated with radiography in 14/15 cases. In conclusion, radiography is able to diagnose a skull fracture in most cases. Skull fractures however are not similarly classified after radiographic and CT evaluation, which causes a difference in interpretation and perception of the fractures. Therefore, CT should be the modality of choice for surgical planning and prognosis.