Year 1021 (MXXI) was a common year starting on Sunday of the Julian calendar. November – Emperor Henry II conducts his fourth Italian military campaign. He crosses the Brenner Pass with a 60,000-strong army, and reaches Verona, where he receives Lombard levies. Henry proceeds to Mantua and then into Ravenna, to spend Christmas there.

1021 was a common year starting on Sunday of the Julian calendar, the 1021st year of the Common Era (CE) and Anno Domini (AD) designations, the 21st year of the 2nd millennium, the 21st year of the 11th century, and the 2nd year of the 1020s decade. As of the start of 1021, the Gregorian calendar was 6 days ahead of the Julian calendar, which ...

天禧 五年（1021）二月， 宋真宗 去世，遗诏刘皇后为皇太后，负责处理一切军国大事。 宋仁宗即位时，宰相 丁谓 建议刘太后另设一殿，处理朝廷内外事务，刘太后怒不可遏，派遣宦官张景宗、 雷允恭 对丁谓等人传达旨意；皇帝处理军国大事，皇太后应该始终 ...

What happened and who was notable in 1021? Browse important events, world leaders, notable birthdays, and tragic deaths from the year 1021.

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Form SSA-1021 (04-2021) Section 1860 D-14 of the Social Security Act, as amended, allows us to collect this information. We will use the information you provide to determine your eligibility for help paying your share of the cost of a Medicare Prescription Drug Plan. Furnishing us this information is voluntary.

2019年3月7日 · 1021年历史记载. 辽铸太平元宝钱. 开泰十年（1021）十一月，辽改元太平。十二月，铸“太平元宝”钱，与旧铸“统和元宝”钱并用。 计天禧末户口及国用. 真宗天禧（1017—— 1021）末，天下户八百六十七万七千六百七十七，口一千三百九十三万o三百二十。

4 天之前 · CRISPR-Cas systems represent a highly programmable and precise nucleic acid-targeting platform, which has been strategically engineered as a versatile toolkit for biosensing and bioimaging applications. Nevertheless, their analytical performance is constrained by inherent functional and activity limitations of natural CRISPR/Cas systems, underscoring the critical role of molecular engineering ...

2025年3月7日 · Photoelectrocatalytic (PEC) degradation of organic pollutants in wastewater is a promising approach to address water pollution problems. However, the performance of most reported PEC degradation systems is heavily limited by electron–hole recombination and sluggish surface reaction kinetics. Herein, we report a TiO2 nanocone array photoanode modified by the NiO cocatalyst (denoted as NiO ...