Results 61 to 70 of about 17,411 (196)
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT In electrocatalysis, traditional single‐atom catalysts (SACs) face challenges in achieving coordinated control of reaction pathways due to limitations such as single local energy levels and carrier recombination. By introducing an additional defect structure, it is possible to break the electronic structure symmetry, thereby activating SACs ...
Juanjuan Huo +8 more
wiley +1 more source
, 1981 本工作对钒钛磁铁矿中三种精矿粉的物相组成及还原过程进行了研究。 A、B二铁精矿的主要物相组成为磁铁矿和钛铁矿,其中网格状显微结构是钛铁晶石的氧化产物——钛铁矿和磁铁矿。在500～800℃温度范围内观察到钛铁晶石在还原过程中经过钛铁矿。钛铁矿在还原过程中若有过剩的氧化铁存在,也经过钛铁晶石。粗粒钛铁矿经过预氧化可显著改善其还原性。B矿在600 ...
石笙陶, 储绍彬
core
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Most high‐entropy alloys (HEAs) tailored for contaminant degradation suffer from complex fabrication processes and high‐cost alloy design. Furthermore, low‐cost active elements such as Fe and Mg cannot be readily alloyed into HEAs via conventional routes.
Jiajia Si +5 more
wiley +1 more source
Discursos Fotograficos, 2014 Resenha de: SILVA, Mylton Severiano da. Realidade - História da revista que virou lenda. Florianópolis: Editora Insular, 2013. 320 p.
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波尔多液营养保护剂对石灰性土壤铜、铁有效性及花生产量的影响研究
Shuitu Baochi Xuebao, 2006 选用山东省花生主产区的代表性石灰性土壤，通过土培试验的方法，研究了波尔多液营养保护剂BNPP和美国铜基杀菌剂Koeide两种可湿性粉剂对石灰性土壤pH值和铜、铁有效性及其对花生产量的影响。结果表明，与CK（喷清水）相比，喷施BNPP后，土壤pH值有所降低，而土壤有效铁、铜含量都有所提高。同时喷施BNPP后土壤有效铜含量要低于Kocide处理。另外．BNPP处理花生叶绿紊、活性铁、全铁含量以及生物量都有显著提高，产量比CK提高了1．25～1．53倍。波尔多液营养保护剂效果要优于美国Kocide产品。
段路路, 张民, 杨越超, 陈海宁
doaj +2 more sources
Sexo é maldição, ódio é amor [PDF]
Revista Latinoamericana de Psicopatologia Fundamental, 2015 e o amor. Porem nao se trata do amor idealizado, mas sim daquilo que ele comporta de paradoxal, da sua face maldita, obscena e tragica. E no estudo das obras literarias de Nelson Rodrigues, Gregorio de Matos e Fernando Pessoa que este livro demonstra a afirmacao freudiana de que os artistas ja sabiam o que mais tarde a psicana-lise veio revelar: a ...
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT The commercialization of lithium‐sulfur batteries (LSBs) faces dual challenges of sluggish sulfur redox kinetics and lithium polysulfides (LiPSs) shuttling. Herein, we demonstrate a synergistic strategy combining multidimensional structural confinement with d‐band center modulation to simultaneously suppress LiPSs diffusion and catalyze ...
Shibo Rong +8 more
wiley +1 more source
, 2016 对铬铁酸浸液除铁所得草酸亚铁进行氧气氧化?氨浸处理,回收除铁剂草酸盐并用其制备氧化铁黑颜料.考察了氨水用量、反应温度、液固比、反应时间、氧气流量、反应液p H值及晶化温度等对C2O42?浸出率和氧化铁黑质量的影响.结果表明,反应液经60℃晶化处理后,在反应温度80℃、氨水与草酸亚铁摩尔比为3、液固比5 m L/g、氧气流量0.1 L/min、p H值6.9?7.4、反应时间3 h的条件下,C2O42?的浸出接近100%,得到的氧化铁黑质量与国产722氧化铁黑产品相当.
张洋 +4 more
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四川大学学报. 自然科学版, 2005 采用密度泛函理论中原子簇嵌入模式的电荷自洽变分DV-Xα方法(Self-ConsistentofCharge-Discrite Variation-Embedded Cluster Model),对bcc结构用fcc结构的铁在较高压强范围内的物理参量进行了计算,得到了系统的总能随体积变化的关系,以及压强与体积的关系曲线;根据计算结果,作者得到平衡条件下,铁体心结构(bcc)晶格常数为2.75,面心结构(fcc)晶格常数为3.377;并推断出体心结构铁在17.75GPa压强下,可能转变成面心结构铁 ...
陈慧娟, 廖志君, 伍登学
doaj
三角褐指藻(Phaeodactylum tricornutum)油脂富集培养的研究
四川大学学报. 自然科学版, 2011 探讨了营养盐铁、硅及植物激素脱落酸（ABA）单因子对三角褐指藻（Phaeodactylumtricornutum）的生长、油脂含量（%干重）及油脂产量的影响.采用光密度值OD450评价微藻的生长状况,以溶剂浸提法提取油脂.结果表明:（1）铁处理组中,铁浓度在0～46.57umol/L范围内时,藻的生长速率随铁浓度提高而增大;铁浓度为11.64μmol/L时,油脂含量达30%,高于其它铁浓度培养;当铁浓度为11.64μmol/L时,油脂产量最高——是无铁培养的2.8倍;（2）硅处理组中,低含量硅盐（4 ...
王晓青 +6 more
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