Results 21 to 30 of about 32,480 (207)
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Multi‐element Prussian blue analog (PBA) nanocomposites have attracted wide attention for their superior characteristics to single‐functional nanomaterials in extensive applications of diagnosis and therapy. In this study, a novel hollow nanocomposite was designed and fabricated by embedding S2− and Ag nanoparticles into a NiCuMnFe (PBA).
Tao Ji +7 more
wiley +1 more source
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
Etnografia é, etnografia não é
Ilha Revista de Antropologia, 2017 Usando uma noção de "digital" como uma de suas metáforas principais, uma versão do termo que se apoia na discussão de Kara Keeling sobre o "humanismo digital", este texto argumenta que há algo sobre as não-linearidades que definem a diferença da digitalidade que pode nos ajudar a pensar sobre recalibragens no próprio projeto etnográfico.
Araujo, F. N., Jackson, John L.
openaire +2 more sources
In-situ Raman Observations of PLZT Ferroelectric Ceramics under Stress Fields [PDF]
, 2015 在外场作用下铁电陶瓷材料的畴变会造成材料微结构的变形，最终会引发材料的性能退化、材料失效。因此了解铁电材料的破坏机理，研究外场作用下铁电材料的畴变规律，对提高铁电材料的使用价值具有指导性的意义。为探讨力场作用下铁电陶瓷的畴变规律，本论文开展了外力场作用下铁电陶瓷拉曼光谱变化的原位观测研究。论文工作包括：利用固相反应法合成了组成为Pb0.9La0.1(Zr0.52Ti0.48)0.975O3且晶粒尺寸（约5m）适于原位拉曼光谱观测的铁电多晶陶瓷；对合成出的PLZT铁电陶瓷进行化学组分 ...
梁丽苹
core
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT High‐power piezoelectric ceramics which have a wide operating temperature range are essential for sensor and actuator applications in extreme conditions. However, their development is fundamentally hindered by the inherent trade‐off among key parameters (TC, d33, Qm).
Rui Yan +10 more
wiley +1 more source
Preparation and Characterization of Sulfur Modified Lithium Iron Silicates as Cathode Materials [PDF]
, 2016 硅酸铁锂作为一种新型的聚阴离子型正极材料，具有原料丰富、结构稳定、理论容量高等优点，有望成为理想的动力电池正极材料。硅酸铁锂完全脱出两个锂离子对应的理论容量高达333mAh/g，但由于第二个锂离子的脱嵌电压过高和体积变化过大，硅酸铁锂只能脱出一个锂离子。硫改性能有效地降低硅酸铁锂的脱嵌电压和结构破坏，从而实现第二个锂离子的脱嵌，因此，有必要探索硫取代硅酸铁锂的合成方法，从而制备出高性能的硫取代硅酸铁锂正极材料。本论文采用溶胶-凝胶和固相烧结法，以硫脲作为硫源 ...
张存皓
core
The Microstructure Evolution and Mechanical Properties of (FeCoCrNi)100‐x(AlCu)x High‐Entropy Alloys
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT This study systematically investigates the effects of AlCu addition on the microstructural evolution and mechanical properties of (FeCoCrNi)100‐x(AlCu)x (x = 0, 5, 10, 15, 20; at%) high‐entropy alloys (HEAs). The results reveal that the microstructure evolves from coarse equiaxed to refined equiaxed, dendritic, and ultimately dual‐phase ...
Shunfu Xie +7 more
wiley +1 more source
RURIS (Campinas, Online), 2015 Este ensaio tem o objetivo de apresentar um fragmento da etnografia sobre o conhecimento naturalístico dos pescadores artesanais da Carrasqueira – pequeno povoado localizado na costa central portuguesa. O material etnográfico, produzido entre os anos de 2010 e 2011, expõe como os pescadores carrasqueiros denominam alguns dos seres que constituem a ...
openaire +1 more source
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Fe‐based amorphous alloys are attractive soft magnetic materials for next‐generation power electronics, yet simultaneously achieving high saturation magnetic flux density (Bs), low coercivity (Hc), and low core loss under scalable processing conditions remains challenging.
Zhi‐Jun Guo +10 more
wiley +1 more source