The follow up time is an important parameter for estimating the entry capacity of roundabouts. However, its variability and contributing factors have long been ignored in the literatures. In this study, 171 follow up ...The follow up time is an important parameter for estimating the entry capacity of roundabouts. However, its variability and contributing factors have long been ignored in the literatures. In this study, 171 follow up samples and contributing factors （traffic volume, vehicle position, waiting vehicles behind, vehicle type, and drivers＇ gender） are collected at a roundabout in Pacific Pines, Australia. It is found that the follow up time is indeed significantly affected by traffic volume, waiting vehicles behind, vehicle type, and drivers＇ gender. In order to establish the relationship between the follow up time and its contributing factors, an inverse Gaussian regression model is further developed. This relationship could be applied to estimate the entry capacities by taking into account the variability of follow up samples. According to the model, the traffic volume and vehicle types are the most important contributing factors.展开更多
Objective To analysis the effect of chemotherapy on vital viscera in childhood malignant tumors. Methods Measurement of function of hematopoietic organ, liver, kidney and heart immunology and thyroid grand and detecti...Objective To analysis the effect of chemotherapy on vital viscera in childhood malignant tumors. Methods Measurement of function of hematopoietic organ, liver, kidney and heart immunology and thyroid grand and detection of level of electric elements in serum and metabolism of calcium and phosphate in 77 childhood cases with malignant tumors. Results The average period of cease of anticarcinogenic treatment was 3 years(2 months to 10 years). Most of indicators of function were showed in normal limit for hematopoietic, liver, kidney, heart, immunology and thyroid grand as well as level of electric elements in serum in 77childhood cases with malignant tumors. All the results suggested that there were no obvious damage in function of vital viscera and no plain differences among various kinds of tumors. Conclusion The current scheme of anticarcinogenic treatment performed in our center showed safety and reliability without obvious damage in function of vital viscera as well. It is needed that further prolonged the following time, expended the samples and selected more sensitive laboratory indicators.展开更多
OBJECTIVE: To clarify whether it is necessary to reconstruct bone defects at the anterior skull base. METHODS: A long-term follow-up study of 50 patients with anterior skull-base defects in which the dura was reconstr...OBJECTIVE: To clarify whether it is necessary to reconstruct bone defects at the anterior skull base. METHODS: A long-term follow-up study of 50 patients with anterior skull-base defects in which the dura was reconstructed without bone grafts was conducted. CT and MRI examinations were taken periodically after surgery. RESULTS: The ordinates of the bone defects averaged 3.5 cm (range, 2 - 6 cm), and the abscissas averaged 2.8 cm (range, 2 - 5 cm). The abscissas of the bone defects measured 2 - 3 cm in 38 patients, 3 - 4 cm in 10 patients, and 4 - 5 cm in 2 patients. The follow-up ranged from 3 months to 5 years (average, 2 years). CONCLUSIONS: At normal intracranial pressure, if the dura mater is repaired properly at the skull-base defects and reinforced with a pedicled pericranial flap, encephalomeningocele and cerebrospinal fluid (CSF) leakage can be prevented. It may not be necessary to make free bone grafts when the size of the cranial base bone defect is smaller than 4 cm.展开更多
基金supported by CIEM Seed Fund Scheme and GU NRG/ITF Scheme
文摘The follow up time is an important parameter for estimating the entry capacity of roundabouts. However, its variability and contributing factors have long been ignored in the literatures. In this study, 171 follow up samples and contributing factors （traffic volume, vehicle position, waiting vehicles behind, vehicle type, and drivers＇ gender） are collected at a roundabout in Pacific Pines, Australia. It is found that the follow up time is indeed significantly affected by traffic volume, waiting vehicles behind, vehicle type, and drivers＇ gender. In order to establish the relationship between the follow up time and its contributing factors, an inverse Gaussian regression model is further developed. This relationship could be applied to estimate the entry capacities by taking into account the variability of follow up samples. According to the model, the traffic volume and vehicle types are the most important contributing factors.
文摘Objective To analysis the effect of chemotherapy on vital viscera in childhood malignant tumors. Methods Measurement of function of hematopoietic organ, liver, kidney and heart immunology and thyroid grand and detection of level of electric elements in serum and metabolism of calcium and phosphate in 77 childhood cases with malignant tumors. Results The average period of cease of anticarcinogenic treatment was 3 years(2 months to 10 years). Most of indicators of function were showed in normal limit for hematopoietic, liver, kidney, heart, immunology and thyroid grand as well as level of electric elements in serum in 77childhood cases with malignant tumors. All the results suggested that there were no obvious damage in function of vital viscera and no plain differences among various kinds of tumors. Conclusion The current scheme of anticarcinogenic treatment performed in our center showed safety and reliability without obvious damage in function of vital viscera as well. It is needed that further prolonged the following time, expended the samples and selected more sensitive laboratory indicators.
文摘OBJECTIVE: To clarify whether it is necessary to reconstruct bone defects at the anterior skull base. METHODS: A long-term follow-up study of 50 patients with anterior skull-base defects in which the dura was reconstructed without bone grafts was conducted. CT and MRI examinations were taken periodically after surgery. RESULTS: The ordinates of the bone defects averaged 3.5 cm (range, 2 - 6 cm), and the abscissas averaged 2.8 cm (range, 2 - 5 cm). The abscissas of the bone defects measured 2 - 3 cm in 38 patients, 3 - 4 cm in 10 patients, and 4 - 5 cm in 2 patients. The follow-up ranged from 3 months to 5 years (average, 2 years). CONCLUSIONS: At normal intracranial pressure, if the dura mater is repaired properly at the skull-base defects and reinforced with a pedicled pericranial flap, encephalomeningocele and cerebrospinal fluid (CSF) leakage can be prevented. It may not be necessary to make free bone grafts when the size of the cranial base bone defect is smaller than 4 cm.
