Results 21 to 30 of about 913,412 (134)
Gongye shui chuli, 1987 本文提出了一种用流动注射光度技术检测天然水中SO42-含量的新方法。以测定BaSO4吸光度值为基础，采用流动注射技术实现对天然水中SO42含量的半自动连续检测。本方法设计了二种注射流程，即试剂注入式及样品注入式。并研讨了该流动注射分析方法的最佳条件。
袁世平
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, 2010 水庫供水的主要來源為本身儲存的水量及入流量，但入流量具有不確定性，因此在不預期的乾旱時期水庫供水量有時無法滿足既定的需求量。良好的水庫營運規則可使缺水的影響減到最低，如何將水庫入流量的不確定性併入水庫的供水規則為本文的研究重點。對於水庫入流量，本文考慮歷史紀錄流量中最小入流量與入流量條件平均值（定義為已知前月入流量時本月入流量之平均值），並以其對需水量的關係作為水庫的供水指標。水庫的營運結果則以缺水特性，包括缺水延時、缺水量及缺水頻率等相關缺水指標來評估。文末則以簡化的石門水庫單目標供水系統為例 ...
蕭政宗; 李皓志
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Policy Studies Journal, Volume 54, Issue 3, August 2026.Abstract We examine whether and how public participation in policymaking contributes towards fostering stakeholder support for policy proposals formulated in the bureaucratic arena. We explain how key markers of procedural fairness describing both the participation process and policymakers' presentations of it during the decision justification stage co‐
Adriana Bunea, Idunn Nørbech
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Shiyou jixie, 2015 为解决水平井中化学剂分层段注入问题，研制了水平井化学剂定点注入工艺管柱。该工艺管柱一趟管柱可实现多个层段作业，理论上层段不受限制，具有可重复作业，可任选某一层段作业及反洗井功能。研制了可洗井注入封隔器和注入阀等配套工具。现场试验结果表明，注入阀能力达到480 m3/d，封隔器坐封、解封容易，可重复坐封、解封，封隔器验封合格，实现了对目标层的定点注入，进行了不动管柱反洗，洗井通畅，管柱的起下作业顺利。注入过程压力没有明显上升，压力和排量均符合设计要求，工艺管柱基本能满足水平井化学剂定点注入的需求。
邹明华 +6 more
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Reconstructing Old Chinese *‐ts Using Han‐Time Material
Transactions of the Philological Society, Volume 124, Issue 2, Page 487-512, July 2026.Abstract Baxter & Sagart (2014b) reconstruct *‐Vt‐s on the basis of Middle Chinese reflexes in ‐jH (from some OC *‐s) coupled with either etymological or graphic connections to words in Middle Chinese ‐t. This approach, while perfectly sound, can suffer from lack of etymological or graphic data, leading to missed reconstructions. Since Old Chinese *‐ts
Julien Baley
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The underappreciated roles of fog and dew on vegetation and biocrusts
New Phytologist, Volume 251, Issue 1, Page 46-63, July 2026.Summary Fog and dew represent minor components of ecosystem water budgets in most ecosystems. However, fog and dew can play an essential role in ecosystem dynamics and are particularly important for water‐limited systems. In addition to serving as direct water inputs, fog and dew can influence microclimate and water redistribution, thereby promoting ...
Lixin Wang, Yue Li, Mengyun Sun, Na Qiao
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Gongye shui chuli, 2008 为控制大庆油田注入水中细菌的数量和减少硫化物的危害，作者在油田污水注入站进行了二氧化氯杀菌试验，确定了二氧化氯的最佳投加浓度。结果表明，当储水罐内回注水中投加的二氧化氯质量浓度在40mg/L以上时，对污水中硫酸盐还原菌、腐生菌和铁细菌的灭菌率可达90%，回注水中的硫化物含量也明显减少，细菌与硫化物指标达到油田注水标准。腐蚀率却随着二氧化氯浓度的增大而逐渐增加，最高达到0.069mm/a。在回注水中二氧化氯质量浓度为40mg/L时，腐蚀率达到Q/SYDQ0605-2006企业标准。
舒志明, 张照韩, 陈忠喜, 马放
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Policy &Internet, Volume 18, Issue 2, June 2026.ABSTRACT AI‐generated images have become so good in recent years that individuals often cannot distinguish them from ‘real’ images. This development, combined with the rapid spread of AI‐generated content online, creates a series of societal risks. Watermarking, a technique that involves embedding information within the content to indicate their AI ...
Bram Rijsbosch +2 more
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, 2007 为了了解自然条件下天然气水合物的分解性质,在20～40目石英砂中进行了甲烷水合物常压注热水分解实验。结果表明,与温度一样,电阻是甲烷水合物形成和分解良好的标示性参数：当水合物形成时,电阻快速增大;而水合物分解时,电阻则快速减小。实验研究与模拟计算均表明,在热水注入与水合物快速分解两个起始时刻之间有1.45min左右的时差,此时热水带来的热量主要用于加热石英砂—水合物体系;实验结果还表明,注入热水后,水合物分解界面自注入端开始向另一端移动,由于热水渗透时经沿途冷却,分解界面的移动速度是逐渐减小的 ...
李栋梁 +4 more
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Structural Modulation of Magnetic Softness in Fe‐Based Amorphous Alloys via Pulse Current Training
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Fe‐based amorphous alloys, despite their intrinsically low magnetocrystalline anisotropy, suffer from quasi‐dislocation dipoles and localized stress fields that impede domain‐wall motion and increase coercivity. Here, we introduce pulse current training (PCT) as an energy‐efficient technique to overcome these limitations in a Fe76Si9B10P5 ...
Shumin Ye +13 more
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