Effects of irrigation and nitrogen on chlorophyll content, dry matter and nitrogen accumulation in sugar beet (Beta vulgaris L.).

A 2-year field experiment was conducted to analyze the growth conditions, physical features, yield, and nitrogen use efficiency (NUE) of sugar-beet under limited irrigation conditions in northeast of China. A cultivar H003 was used as plant materials; six treatments (C1-C6) were included: C1, no nitrogen applied, rain-fed; C2, nitrogen (120.00 kg ha), rain-fed; C3, no nitrogen applied, hole irrigation for seeding; C4, nitrogen (120.

MGMT promoter methylation and glioblastoma prognosis: a systematic review and meta-analysis.

Background And Aims: We undertook this study to comprehensively summarize the associations between MGMT promoter methylation and prognosis of glioblastoma (GBM).

Methods: We searched PubMed, EMBASE and Cochrane databases (from January 2003 to November 1, 2011) and the references of the relevant articles in English with hazard ratios (HRs) and 95% confidence intervals (95% CIs). Two reviewers independently extracted data using a standardized form.