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地下水超采区混合井回灌流量计算与效率分析 被引量:2
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作者 张学真 胡安炎 贺屹 《干旱地区农业研究》 CSCD 北大核心 2006年第3期190-193,共4页
以试验数据为基础,对地下水超采区混合井回灌过程中井流量计算的方法进行理论归类,发现混合井回灌过程中的井流计算方法一般可按承压水井流计算方法进行;定量分析混合井单位流量变化过程,发现其回灌效率大于抽水效率;利用Grapher系统对... 以试验数据为基础,对地下水超采区混合井回灌过程中井流量计算的方法进行理论归类,发现混合井回灌过程中的井流计算方法一般可按承压水井流计算方法进行;定量分析混合井单位流量变化过程,发现其回灌效率大于抽水效率;利用Grapher系统对不同流量回灌过程进行分析,得出利用混合井在超采区实施回灌其效率开始时虽存在衰减,但最终会趋于稳定。停灌后回灌井水位在数小时恢复到初始水位,说明回灌过程对开采井的滤水结构影响不大,管井水力传导仍然良好。 展开更多
关键词 混合井回灌试验 计算方法理论归类 回灌过程分析 回灌效率
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沈阳城区地下水地源热泵运行状况调查及分析 被引量:7
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作者 何俊仕 杨菲 吴法伟 《暖通空调》 北大核心 2008年第11期41-44,12,共5页
对沈阳城区已运行的61个地下水地源热泵空调系统工程进行调查,分析其运行存在的问题及影响回灌的因素,并探讨相应的解决对策,为沈阳城区地下水地源热泵的推广应用提供参考。
关键词 地下水地源热泵 运行调查 抽水试验 回灌分析
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山东东营牛庄镇地热井回灌探讨 被引量:1
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作者 贺志鹏 《云南化工》 CAS 2020年第6期112-113,共2页
对东营牛庄镇地区地质及地热储层特征进行研究分析,确认该地区的主要开采层位及完钻层位。对射孔完井、绕丝筛管、管外砾石充填成井工艺、回灌井酸化工艺技术等工艺进行对比分析,并利用达西径流公式对采用射孔的NR1井和绕丝筛管完井的XF... 对东营牛庄镇地区地质及地热储层特征进行研究分析,确认该地区的主要开采层位及完钻层位。对射孔完井、绕丝筛管、管外砾石充填成井工艺、回灌井酸化工艺技术等工艺进行对比分析,并利用达西径流公式对采用射孔的NR1井和绕丝筛管完井的XF2井进行回灌能力评价,为今后该区块完井方式的优选奠定了基础。 展开更多
关键词 牛庄镇 地热储层 完井工艺 回灌分析
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Neoadjuvant intra-arterial infusion chemotherapy followed by surgery in patients with locally advanced cervical cancer
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作者 Qin Wu Yi Zhang 《The Chinese-German Journal of Clinical Oncology》 CAS 2009年第9期537-540,共4页
Objective: The aim of this study was to investigate the role of preoperative neoadjuvant intra-arterial infusion chemotherapy (NAIC) in treating locally advanced cervical caner. Methods: Nineteen locally advanced ... Objective: The aim of this study was to investigate the role of preoperative neoadjuvant intra-arterial infusion chemotherapy (NAIC) in treating locally advanced cervical caner. Methods: Nineteen locally advanced cervical cancer (LACC) patients from November 2003 to November 2005 were analyzed retrospectively. NAIC was administrated 2 courses every 2 weeks using a combination of 30 mg/m^2 bleomycin and 50 mg/m^2 cisplatin via bilateral femur artedes. The response to NAIC was assessed by pelvic examination and imaging diagnostics and histological analysis. Two weeks after NAIC radical hysterectomy with pelvic lymphadenectomy was performed. Results: Radical hysterectomy with pelvic lymphadenectomy were performed in 18 patients successfully. The mean tumor reduction rate was 73.04%. The overall clinical response rate of NAIC was 84.2% with 2 complete responses and 16 partial responses. Only 1 nonresponder. Six of 7 cases who had parametrial infiltration had a absence after chemotherapy, no significant change was observed in 1 case who followed by radiotherapy. Multivariate logistic regression analysis indicated that tumor volume prior to treatment was determining factor affecting the efficacy of NAIC in LACC. Conclusion: pre-operative NAIC inhibited the growth of LACC, minimized the size, eliminate effectively the pathologic dsk factors in the pelvic cavity, to improve the operability in cervical cancer patients with stage lib or above, considered inoperable. 展开更多
关键词 locally advanced cervical cancer (LACC) neoadjuvant intra-arterial infusion chemotherapy (NAIC) SURGERY
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Study of Performance on Recharging the Borehole by Means of Exhaust-air Energy
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作者 周亚素 FAHLN Per 《Journal of Donghua University(English Edition)》 EI CAS 2009年第2期126-131,共6页
In this paper,the performance analysis of recharging the borehole by means of exhaust-air energy is carried out.The results show that a vertical borehole used as heat source for a Ground Source Heat Pump(GSHP)can be r... In this paper,the performance analysis of recharging the borehole by means of exhaust-air energy is carried out.The results show that a vertical borehole used as heat source for a Ground Source Heat Pump(GSHP)can be recharged in high efficiency.With equal heat transfer capabilities of exhaust-air coil and borehole collector,the system provides a maximum overall efficiency.However,due to ground infinite capacity,the optimum brine flow rate is different from conventional two-exchanger system.The recharging system provides two peak overall efficiencies when the capacity ratio Cr=5 for laminar flow and Cr=15 for turbulent flow respectively.The overall efficiency is independent of exhaust-air temperature and undisturbed ground temperature,although the fluid properties depend on temperature.In practical system lower ethyl percentage brine should be chosen if the freezing point meets the system request,which can provide a higher overall efficiency. 展开更多
关键词 recharging BOREHOLE exhaust-air coil BRINE flowrate coil allocation ratio efficiency mathematical model
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Effect of Deficit Irrigation at Different Growth Stages on Wheat Growth and Yield 被引量:1
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作者 Seyed Abdolreza Kazemeini Mohsen Edalat 《Journal of Life Sciences》 2011年第1期35-38,共4页
In order to evaluate the effect of deficit irrigation at various growth stages on wheat growth and yield, a field experiment was conducted in the 2008-2009 growing season based on the completely randomized block with ... In order to evaluate the effect of deficit irrigation at various growth stages on wheat growth and yield, a field experiment was conducted in the 2008-2009 growing season based on the completely randomized block with four replications at the experimental farm of the College of Agriculture, Shiraz University, Shiraz, Iran, located at Badjgah. Treatments involved 13 irrigation regimes which applied in stem elongation, heading and grain filling growth stages. The highest seed yield (4,333 kg-ha-1) and the lowest ones (1,377 kg'hal) were obtained from T1 (100% field capacity (FC) in all growth stages) and T13 (50% FC in all growth stages), respectively. With limitation in water amount seed yield was diminished, but this trend was not significant at T4 (100%, 100% and 50% FC) and TI 1 (100%, 100% and 75~/0 FC). Stepwise regression results revealed that, seed number per spike had the largest contribution (partial R2 = 0.72) in seed yield variation. Also at TI, T4, and TI 1 treatments (well water treatments) as well as TI3 (sever stress) head number m2 contribute most in seed yield determination (partial R2 = 0.96). It can be concluded that water shortage during the grain filling period and its allocation to the other consecutive crop, can increase crop production in southern regions of Iran. 展开更多
关键词 Deficit irrigation yield components WHEAT stepwise regression.
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