The Quality Specifications of Mischmetal Wire and Rod and the Method of Adding Rare Earth in Steel

The quality of mischmetal wire and rod and the method of adding rare earth into steel are quite important for making high quality steel. This paper proposes a quality specification of wire and rod as well as related adding method. The paper also provides principles for selecting raw material and adding method.

Quality of life and emotional change for middle -aged and elderly patients with diabetic retinopathy

AIM:To evaluate the SF-36, Diabetes Specificity Quality of Life Scale (DSQL) and anxiety and depression symptoms and investigate its changes in proliferative diabetic retinopathy (PDR) by vitrectomy interventions. METHODS:The present study included 108 diabetic retinopathy (DR) patients:54 with PDR and 54 with non-proliferative diabetic retinopathy (NPDR). Each healthy control group (n =54) sociodemographically matched to DR groups was established respectively. The quality of life, anxiety and depression symptoms were evaluated and analyzed on preoperative and postoperative month 1 using SF-36, DSQL and Hospital Anxiety and Depression Scale (HADS). · RESULTS:DR patients described impaired HRQL (Health Related Quality of life, SF -36) in 6 out of 8 subscales, including ‘Body Health’, ‘Body RoleFunction’,‘General Health’,‘Society Function’,‘Emotion Role Function’and‘Mental Health’. Compared with controls, DR patients (NPDR and PDR) suffered from statistically significantly impaired HRQL (SF-36 Summary score) (P【 0.05). By surgical intervention, the anxiety and depression score were significantly reduced, while the health and quality of life (SF-36 Summary scores and DSQL scores) was improved in patients with PDR (P 【0.05). CONCLUSION:DR patients were affected in mentation and quality of life. Surgery interventions can improve SF-36, DSQL, anxiety and depression in PDR patients.

Forest aboveground biomass estimates in a tropical rainforest in Madagascar: new insights from the use of wood specific gravity data

To generate carbon credits under the Reducing Emissions from Deforestation and forest Degradation program（REDD＋）, accurate estimates of forest carbon stocks are needed. Carbon accounting efforts have focused on carbon stocks in aboveground biomass（AGB）.Although wood specific gravity（WSG） is known to be an important variable in AGB estimates, there is currently a lack of data on WSG for Malagasy tree species. This study aimed to determine whether estimates of carbon stocks calculated from literature-based WSG values differed from those based on WSG values measured on wood core samples. Carbon stocks in forest biomass were assessed using two WSG data sets：（i） values measured from 303 wood core samples extracted in the study area,（ii） values derived from international databases. Results suggested that there is difference between the field and literaturebased WSG at the 0.05 level. The latter data set was on average 16 % higher than the former. However, carbon stocks calculated from the two data sets did not differ significantly at the 0.05 level. Such findings could be attributed to the form of the allometric equation used which gives more weight to tree diameter and tree height than to WSG. The choice of dataset should depend on the level of accuracy（Tier II or III） desired by REDD＋. As higher levels of accuracy are rewarded by higher prices, speciesspecific WSG data would be highly desirable.

121种罕见病特异性生命质量量表的研制与应用现状

以《第一批罕见病目录》121种疾病名称为基础,检索中英文数据库(中国知网、万方数据库、PubMed和Web of Science)和患者报告的临床结局和生存质量量表的数据库(PROQOLID),收集并评价罕见病特异性生命质量(quality of life,QoL)量表的研制、测量性能测评及应用文献。现有罕见病特异性生命质量量表50个,其中9个是汉化量表,仅1个量表为国内研制;大部分量表(86.0%)研究对象为成年患者;量表反应度和灵敏度测评较少。建议应加强罕见病生命质量量表尤其是未成年特异性生命质量量表的研制与应用,在量表测量性能评价时重视对反应度和灵敏度的研究。