This work describes details about the challenges and solutions encountered in the timber structure beam. The choice for wood is due to the fact that it is a better material suited for environments with high salinity a...This work describes details about the challenges and solutions encountered in the timber structure beam. The choice for wood is due to the fact that it is a better material suited for environments with high salinity and, in this context, to reduce maintenance costs. The entire roof was supported only by four columns, which forced the side and frontal beams to exceed spans over 18 meters without intermediate supports. This was the most important challenge of the project： to find a section to the beam which can attend the ultimate limit state and serviceability in wood to the dimensions in project. The answer was clear： It would need to have composed section. A computational model was constructed using the finite element method in order to obtain the efforts on the structural elements. It is important to emphasize that the design of a wood structure requires not only knowledge, but creativity as well, to overcome the challenges posed by the distinctive needs to the detailing of this material. In addition to that, it requires special attention during the construction execution, because of the difficulty that the carpenters have to read the specific plans.展开更多
A 18-year-old local Han Chinese primigravida woman suffered with severe pre-eclampsia.After blood pressure stabilization,convulsion prophylaxis and fetal lung maturity enhancement,emergency cesarean section was perfor...A 18-year-old local Han Chinese primigravida woman suffered with severe pre-eclampsia.After blood pressure stabilization,convulsion prophylaxis and fetal lung maturity enhancement,emergency cesarean section was performed for inntractable headache at 32 weeks.Uterine inversion spontaneously occured at cesarean section.Immediately,uterine inversion was corrected manually without difficulty.Uterine atony and postpartum haemorrhage did not occur,and the patient made an remarkable recovery.This case report provides residents with excellent case-based learning.The management of uterine inversion requires immediate treatment for uterine repositioning.All staff members in the maternal unit should be updated with skills and knowledge about uterine inversion.展开更多
文摘This work describes details about the challenges and solutions encountered in the timber structure beam. The choice for wood is due to the fact that it is a better material suited for environments with high salinity and, in this context, to reduce maintenance costs. The entire roof was supported only by four columns, which forced the side and frontal beams to exceed spans over 18 meters without intermediate supports. This was the most important challenge of the project： to find a section to the beam which can attend the ultimate limit state and serviceability in wood to the dimensions in project. The answer was clear： It would need to have composed section. A computational model was constructed using the finite element method in order to obtain the efforts on the structural elements. It is important to emphasize that the design of a wood structure requires not only knowledge, but creativity as well, to overcome the challenges posed by the distinctive needs to the detailing of this material. In addition to that, it requires special attention during the construction execution, because of the difficulty that the carpenters have to read the specific plans.
基金This work was supported by grants from the Open Fundation of Key Laboratory of Birth Regulation and Control Technology of National Health Commission of China(grant numbers 2018KF003)Medical and Health Science Technology Development Plan of Shandong Province(grant numbers 2018WS274).
文摘A 18-year-old local Han Chinese primigravida woman suffered with severe pre-eclampsia.After blood pressure stabilization,convulsion prophylaxis and fetal lung maturity enhancement,emergency cesarean section was performed for inntractable headache at 32 weeks.Uterine inversion spontaneously occured at cesarean section.Immediately,uterine inversion was corrected manually without difficulty.Uterine atony and postpartum haemorrhage did not occur,and the patient made an remarkable recovery.This case report provides residents with excellent case-based learning.The management of uterine inversion requires immediate treatment for uterine repositioning.All staff members in the maternal unit should be updated with skills and knowledge about uterine inversion.
