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石河子绿洲棉区覆膜内5cm地温变化与气温的关系及预报 被引量:8
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作者 吉春容 张玲 +3 位作者 杨明凤 朱惠芝 严彩虹 向导 《沙漠与绿洲气象》 2015年第5期16-21,共6页
膜内5 cm地温稳定通过10-12℃为棉花适宜播种的温度指标,找出地膜内5 cm地温与气温的定量关系并进行地温预报,同时确定对应的日平均气温的稳定界限指标值,就成为开展棉花适宜播种期预报的关键所在。以石河子绿洲覆膜栽培棉区为研究对象... 膜内5 cm地温稳定通过10-12℃为棉花适宜播种的温度指标,找出地膜内5 cm地温与气温的定量关系并进行地温预报,同时确定对应的日平均气温的稳定界限指标值,就成为开展棉花适宜播种期预报的关键所在。以石河子绿洲覆膜栽培棉区为研究对象,分析了2008—2014年棉区春播期膜内5 cm地温、气温的变化趋势以及气温与覆膜内、外地温的关系,并建立了膜内5 cm地温预报模型。结果表明:近年来石河子棉区春播期内气温和膜内外5 cm地温变化趋势一致,均有所上升,且膜内5 cm地温显著高于膜外地温和日平均气温。棉田覆膜内外5 cm地温与气温之间显著相关(P≤0.01),石河子棉田覆膜内5 cm地温稳定通过10-12℃时,对应的日平均气温界限范围为6.3-8.2℃;利用逐日气温建立膜内5 cm地温预报模型,回代检验绝对误差平均为1.01℃,2014和2015年预报检验绝对误差分别为0.5、0.7℃。预报模型可为更好地开展棉花播种期气象服务提供参考依据。 展开更多
关键词 绿洲棉区 膜内5 cm地温 气温 预报模型
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Malignant neoplasms of the uterus following radiation therapy for cervical carcinoma: a clinical study of 47 cases 被引量:1
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作者 Shaokang Ma Lingying Wu 《The Chinese-German Journal of Clinical Oncology》 CAS 2009年第6期356-359,共4页
Objective: To study the characteristics and clinical features of uterine neoplasms developed after radiation therapy for cervical carcinoma. Methods: Clinical data of 47 cases of uterine neoplasms occurred following... Objective: To study the characteristics and clinical features of uterine neoplasms developed after radiation therapy for cervical carcinoma. Methods: Clinical data of 47 cases of uterine neoplasms occurred following radiation therapy for cervical carcinoma were retrospectively reviewed. Results: The median age at uterine neoplasms diagnosis was 62 years (range: 38-77 years), and the median latency period from initial therapy to development of uterine neoplasms was 14 years (range: 5-35 years). Thirty of 47 cases were endometrial carcinoma, of which 3 were uterine papillary serous carcinoma (UPSC). Seventeen of 47 patients were uterine sarcoma, all of those were carcinosarcoma. The distribution by stage, grade, and histology of 30 cases of endometrial carcinoma was as follows: stage Ⅰb, 1 case; stage Ⅰc, 2 cases; stage Ⅱ, 6; stage Ⅲa, 4; stage Ⅲb, 2; stage Ⅲc, 11; stage Ⅳ, 4 cases; grade 1, two cases; grade 2, nine; grade 3 (include 3 UPSC patients), seventeen; unknown grade, two; endometriod, 27; UPSC, 3 cases; 7 of 30 cases of endometrial carcinoma had recurrences (23.3%), at median time to recurrence was 24 months, and their median survival time was 26 months. The overall 3- and 5-year survival rates were 60% and 38%, respectively. Of the 17 cases of uterine sarcoma, the median survival was 10 months, 6 patients occurred recurrence (35.9%), at a median time to recurrence was 9 months, and their median survival was 6 months. The overall 3- and 5-year survival rates were 12% and 0, respectively. Conclusion: The main uterine neoplasms development after radiation therapy for cervical carcinoma is endometrial carcinomas, of which there is a preponderance of high-risk histological subtypes and a poor prognosis. Most of the uterine sarcomas occurred following radiation therapy for cervical carcinoma are carcinosarcomas and the prognosis is very poor. 展开更多
关键词 cervix neoplasms RADIOTHERAPY uterine neoplasms second neoplasms
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