Unilateral congenital short femur: A case report

A case of congenital short femur in an otherwise healthy infant is described. Antenatal sonographic diagnosis was made at 26 weeks of gestation. The left femur was shorter than the right (ratio 0·82–0·85). In this case, the occurrence of congenital short femur was sporadic. The diagnosis was confirmed after delivery. This case illustrates the importance of ultrasound as an early detector of certain congenital anomalies and as a useful tool in their follow-up.     

城市环境信息管理系统建设实践

在对城市环境管理日常工作流程调研的基础上，设计开发出包含业务子系统（MIS），政务子系统（OA）、环境地理信息子系统（GIS）、网上发布子系统（WEB）的适合城市级使用的环境信息管理系统，阐述了系统的功能，技术结构和特点。     

Capacity estimation and preliminary strategy for reducing the release of dioxins in China

As a party of the Stockholm Convention on Persistent Organic Pollutants, China must submit its national implementation plan (NIP) for this convention. The strategy and action plan for reducing the release of dioxins in China are the most important components of the NIP. Three problems are key points for developing such strategy and action plan—what are the key sources for applying the best available technology/best environmental practice (BAT/BEP) to reduce the release of dioxins? How about the capacity for reducing the dioxins release from the key sources? Where are the areas of priority for applying BAT/BEP? This paper shows the efforts towards the solution of these problems. The list of key sources covering about half of the total dioxins release was determined considering four criteria. The capacity of key sources were estimated based on the difference between the emission factor corresponding to the actual situation in 2004 and that corresponding to the scenario that all key sources have been applied BAT/BEP to reduce the dioxins release. The priority analysis using the geographical information system (GIS) tool has revealed that castern provinces should be of high priority in the future reduction activities of dioxins release in China.     

CORSI溶融还原炼铁工艺及其尾气处理技术

一种新型的钢铁冶炼清洁工艺－ＣＯＲＳＩ熔融还原炼铁技术，可将煤中的硫大部分固定在废渣中，用于制造水泥，从而减产了ＳＯ２的排放量。进一步与化工、能源系统相结合，可以处理尾气中大量的ＣＯ，ＣＯ２。在得到大量化工产品的同时，可以副产电能。该系统对保护生态环境，提高生产效率，增强企业竞争力非常有利。     

建设项目清洁生产能力评估方法

清洁生产能力评估将清洁生产概念引入建设项目环境影响评价，对实现经济与环境可持续发展具有重要意义。探讨清洁生产能力评估的必要性，可能性及方法，并对前景进行展望。     

Chorionic villus sampling for fetal karyotyping in missed abortions

Chorionic villus sampling (CVS) was performed in 12 pregnant women (9–25 gestational weeks) with ultrasonographic evidence of missed abortion. An ultrasonographically guided transabdominal (eight cases) or transcervical (four cases) approach was used. Fetal karyo-typing was successful in all cases; in five, chromosomal aberrations were found and in seven, chromosome analyses revealed normal karyotypes. Tissue culture for fetal karyotyping was successful in only 72.5 per cent of 40 live pregnancies which were electively interrupted because of abnormal ultrasonographic findings or an abnormal fetal karyotype, and in 57 per cent of seven missed abortions. CVS is suggested as a feasible and effective method for fetal karyotyping in missed abortions and it seems to be superior to post-abortion tissue culture.     

Oligohydramnios with amnio-chorionic separation at 15–16 weeks' gestation

Nine patients with oligohydramnios and amnio-chorionic separation were identified out of 7000 women who underwent a vaginal ultrasound examination at 15–16 weeks' gestation. Oligohydramnios was defined as a reduced amount of amniotic fluid, a distance of more than 1 cm between the chorion and amnion, and a good turgor of the amnion without floating membranes or intrauterine sheets. Fetal malformations were observed in all nine cases. In four of six fetuses where chromosomal analysis was available, an abnormal karyotype was found. It is concluded that oligohydramnios in the early second trimester is associated with fetal abnormality.