Results 11 to 20 of about 1,424,415 (81)
Gongye shui chuli, 2019 探讨了饱和吸附氨氮天然沸石的再生机理和最佳化学再生条件。结果表明，沸石的再生存在2个途径：碱性溶液对NH4+的解吸，以及碱性溶液对沸石表面形态的改变。饱和吸附沸石的最佳再生条件：NaOH质量分数为4%，再生时间4 h，再生温度60 ℃。沸石经过25次再生后，吸附能力保持在85.2%，每次再生平均丢失0.6%，具有工业应用的可行性。
张帅 +6 more
doaj +2 more sources
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Lignin is a natural non‐toxic polyphenolic macromolecule, which shows inherent antioxidant and broad‐spectrum antibacterial activities. However, due to the low content and the high bond dissociation energy of phenolic hydroxyl groups (Ar‐O·H), its antioxidant and antibacterial activities are relatively weak, which limits its application as a ...
Meiling Han +10 more
wiley +1 more source
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Germanium is a critical dispersed metal, yet sustainable recovery from dilute solutions is limited by sorbents that are difficult to regenerate and operate in continuous mode. Here, we fabricate a regenerable 3D‐printed hydrogel monolith (3D‐ATO‐GS) by integrating hydroxyl‐rich amorphous TiO2 nanoparticles into an alginate/gelatin scaffold ...
Wenhuan Guo +6 more
wiley +1 more source
Gongye shui chuli, 2003 离子交换树脂失效后需经再生处理才能恢复其交换能力,树脂再生效果的好坏对运行的经济性有直接影响。通过现场试验研究,建立了一种利用中排再生废液质量分数确定离子交换树脂再生进酸碱量终点的新方法,该方法可降低再生酸碱耗,提高再生后中和池废液pH合格率,实现良好的经济效益和社会效益。通过数学分析,建立了确定最佳中排再生废液质量分数的数学模型,实践证明该模型具有较强的实用性。
范圣平, 曹顺安, 张晋, 禹贯省
doaj +2 more sources
High‐Value Targeted Conversion of Copper Slag as LiFePO4 Material for Lithium‐Ion Batteries
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The massive stockpiling of copper slag (CS) presents severe environmental and resource‐waste challenges. Existing strategies for CS valorization typically yield low‐value‐added products. Herein, we propose an innovative hierarchical regulation approach to transform CS into high‐performance LiFePO4 (LFP) cathode materials.
Yuyun Li +5 more
wiley +1 more source
Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 2, Page 135-146, August 2025.ABSTRACT Objective To derive pooled estimates of maternal, fetal and pediatric outcomes up to the age of 30 months in patients undergoing pre‐ or postnatal surgery for open spina bifida (OSB). Methods A systematic search was conducted in MEDLINE, PubMed (non‐MEDLINE records), Embase, Web of Science, ClinicalTrials.gov, Cochrane Central Register of ...
Y. Kunpalin +10 more
wiley +1 more source
Gongye shui chuli, 1992 软化器是工厂企业主要耗水设备之一,为了做好软化器的节水工作,建议采取下述几项措施。1 将软化器顺流再生改为逆流再生有许多工厂企业目前使用的仍是顺流运行顺流再生软化器。如果将现有的顺流再生软化器改为逆流再生,可以节约软化器再生时的耗水量。软化器改为逆流再生后,可以免去大反洗过程,而以加再生液代替反洗。由于逆流再生的再生剂利用率高,废液量小,浓度低,正洗时间缩短,再生耗水量比顺流再生时可降低50%。直径1米的软化器再生一次可节水30米3。加之由于逆流再生工作周期延长。再生次数减少,节水量相当可观。
魏淑春, 赵连璞
doaj +2 more sources
Postnatal outcome following fetal aortic valvuloplasty for critical aortic stenosis
Ultrasound in Obstetrics &Gynecology, Volume 64, Issue 3, Page 339-347, September 2024.ABSTRACT Objective To report our experience of fetal aortic valvuloplasty (FAV) for critical aortic stenosis (AS), with a focus on the postnatal evolution of the patients. Methods This was a retrospective study including all fetuses with critical AS which underwent FAV in a single center between January 2011 and June 2022.
R. Corroenne +14 more
wiley +1 more source
Gongye shui chuli, 2001 双室床调试中应注意控制好树脂和 EPS惰性白球的高度,最佳再生剂量可通过测定再生废液中残余酸 (碱 )度确定。运行中应按设计要求选用水源 ;阴床再生应先预热,再用 40℃热碱液再生 ;定期对树脂擦洗和活化,防止树脂污染,对已污染的树脂及早复苏。
田文华
doaj +2 more sources
, 2010 本試驗行不同NO3／NH4比率（12：0、10：2、8：4、6：6）的養液，對溫室洋香瓜（Cucumis melo L.）之生育影響試驗，結果顯示養液中之NH4對NO3的比率增加時，植體內之鈣含量相對的減少，適合洋香瓜生長的NO3／NH4比率為10：2。以浮根式栽培法配以平衡之培養液（山崎洋香瓜培養液）時，養液之深淺對於洋香瓜之生育，並無顯著影響。 The effects of different ratios of NO3/NH4 (12 : 0, 10 : 2, 8 : 4, 6 : 6) in ...
沈再發, T.F. Sheen
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