Results 21 to 30 of about 250,148 (170)
Zhongguo shiyan zhenduanxue, 2009 目的研究亚低温状态下,大鼠急性脑缺血时氧自由基—超氧化物歧化酶（SOD）和一氧化氮（NO）、一氧化氮合酶（NOS）的改变,探讨亚低温对缺血脑组织的保护机制。方法将45只Wistar大鼠随机分为9组,假手术组5只,缺血组及亚低温组又根据缺血、亚低温时间不同分为:3 h2、4 h4、8 h7、2 h亚组（各组均为5只）。采用颈内动脉线栓法制备大鼠大脑中动脉闭塞（MCAO）模型。结果比较缺血组和亚低温组,可见亚低温组栓塞侧脑组织超氧化物歧化酶（SOD）的生成和释放明显增加;亚低温组血清中一氧化氮（NO ...
林淑香 +3 more
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Cross‐scale assembly of metal (sub) nanoparticles and/or single atoms into millimeter/nanostructured metal monolithic catalysts (Min‐SMCs) is highly appealing for sustainable water cleanup, due to energy‐efficient catalyst recyclability, high infrastructure compatibility, and low metal‐releasing risks.
Jia‐Cheng E. Yang +4 more
wiley +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT VO2 is a promising thermochromic material, but it is still limited by low transparency, weak solar modulation, and poor stability. Here, we develop a coordination‐compound‐derived strategy to construct a hierarchical BiVO4/VO2@BiVO4 film with a core–shell@nanosheet structure.
Huiyan Xu +11 more
wiley +1 more source
Gongye shui chuli, 2012 对改良的Carrousel氧化沟活性污泥的氧化还原电位(ORP)变化进行了研究,结果表明,在非严格厌氧状态下磷难以释放,同时ORP也不会降低。在外加有机物且厌氧的条件下,新鲜污泥的ORP会明显降低,一般可以达到-80～-150 mV,且存在显著的磷释放,ORP降低的程度与有机物的浓度和种类无明显关系。微生物活性降低后,外加挥发性脂肪酸,ORP不会显著降低,说明对于EBPR系统来说,ORP的高低取决于微生物厌氧代谢的速率。
唐玉朝 +5 more
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Gongye shui chuli, 2022 为考察厌氧氨氧化菌在不同环境下对盐度的响应情况，以及生物量对厌氧氨氧化菌高盐抑制的缓解效果，研究未添加盐度和添加不同盐度的SBR反应器的脱氮性能，确定起到促进及抑制作用的盐度阈值。通过批次实验考察低盐度对35、15 ℃厌氧氨氧化污泥的影响，以及不同污泥量（4、6、8、10 g/L）在高盐抑制条件下对基质的降解能力。结果表明，低于5 g/L的盐度对中温和低温系统中的厌氧氨氧化菌均有促进和稳定作用。尤其在低温条件下，该盐度可提高厌氧氨氧化菌的亚硝氮还原能力，盐度达到14 g/L后出现明显抑制。此外 ...
苏杨, 杨宏
doaj
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Semiconductor photocatalysis represents a pivotal frontier in the quest for sustainable energy and environmental remediation. Among the diverse catalytic materials, Bismuth Oxychloride (BiOCl) has emerged as a particularly promising candidate due to its unique layered structure, featuring [Bi2O2]2+ layers intertwined with halogen ions, which ...
Liu Han +5 more
wiley +1 more source
HIF-1α、ET-1和ADM在低压低氧性肺动脉高压大鼠肺血管的表达及意义
Zhongguo shiyan zhenduanxue, 2015 目的模拟6,000米海拔高度,建立低压低氧性肺动脉高压（HPH）大鼠模型,研究HPH大鼠肺组织中低氧诱导因子-1α（HIF-1α）、内皮素-1（ET-1）和肾上腺髓质素（ADM）的表达及其变化规律。方法将120只SD大鼠随机分为五组,模拟6 000米海拔大气压和氧分压,分别进行低压低氧暴露4天、7天、10天、14天和21天处理,同时设相应时间点对照组（对照组所处海拔为900米）,低压低氧暴露时间为24小时/天。于计划的暴露终点采集各组大鼠肺组织标本,HE染色后观察大鼠肺组织的病理学变化 ...
徐娇阳 +6 more
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Harnessing Trace Elements: Novel Radiosensitization Strategies for Enhanced Cancer Radiotherapy
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Radiotherapy (RT) is one of the core methods of comprehensive cancer treatment. Globally, more than 40% of cancer patients rely on radiotherapy to achieve tumor control, cure or palliative relief. However, radiation resistance, immunosuppression and normal tissue injury limit its clinical application.
Yuhuan Zhang +6 more
wiley +1 more source
Gongye shui chuli, 2006 在常温下对低碳氮比城市污水进行了短程生物脱氮中试研究。当进水COD为130~210mg/L、m（COD）：m（TN）为3.2~4.5、水温19~23℃时，通过控制低氧曝气区的DO为0.2~0.6mg/L，在低氧-好氧（LO）和缺氧-低氧-好氧（ALO）两种工艺中均实现了短程硝化反硝化过程。当HRT为8 h、污泥回流比和内回流比分别为1和2、MLVSS为1 900mg/L时，LO、ALO工艺的TN去除率分别达到64%和74%。
邱兆富, 周琪, 杨殿海, 江建权
doaj
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Lung cancer is one of the most common and deadly malignancies worldwide. Although immune checkpoint inhibitors, including PD‐1/PD‐L1 blockers, have benefited a subset of patients, response rates remain limited, and recurrence is frequent because of the immunosuppressive tumor microenvironment (TME), characterized by hypoxia and dysregulated ...
Yi Ma +6 more
wiley +1 more source