Results 161 to 170 of about 2,098,135 (238)
, 2011 中国农业发展自古以来就一直面临着耕地不足、地力下降、劳动不足、天灾人祸等诸多挑战。通过"杂种",保持农业生物的多样性,是精耕细作等举措之外中国传统农业应对各种不利因素、发展生产所采取的重要措施之一。它不仅成功地扩大了农地面积,提高了土地利用率,维持了土地的永续利用,而且对于自然灾害的控制和劳动力的调节也助有一臂之力。虽然在历史进程中,也存在单一栽培的趋势,但并没有引发严重的问题。近代以后,特别是最近三四十年来,随着人口的快速增长和迅速发展的工业化和全球化,农业生物多样性在市场经济的作用之下 ...
曾雄生
core
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Aqueous zinc‐ion hybrid capacitors (ZICs) bridge the gap between high‐energy batteries and high‐power supercapacitors, yet their performance is fundamentally bottlenecked by the micropore confinement effect in carbon cathodes, which restricts hydrated Zn2+ transport and active site utilization.
Qian Li +12 more
wiley +1 more source
[Advances in the molecular genetics of nuclear gene mutations causing pediatric mitochondrial cardiomyopathy]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiWang ZW, Wang YQ, Wang CL.
europepmc +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Aqueous zinc‐ion batteries (AZIBs) have attracted increasing attention in energy storage owing to their high energy density, low redox potential, and cost‐effectiveness. Nevertheless, uncontrolled dendrite accumulation, gas generation, and severe side‐reaction problems hinder the cycling lifespan, which prevents their commercial applications ...
Xiangzhong Kong +8 more
wiley +1 more source
[Research progress on cellular senescence and liver diseases]. [PDF]
Zhonghua Gan Zang Bing Za ZhiZhang LT, Hu JM, Wang JW, Li H, Qin YJ.
europepmc +1 more source
, 2015 针对现有流化床气化技术难以处理黏结性、高含灰洗中煤的问题,中国科学院过程工程研究所开发了可处理黏结性碎煤的射流预氧化流化床气化技术,该技术利用含氧气体将煤颗粒快速喷射送入预氧化区内破除其黏结性,形成的半焦进入气化区内发生气化反应,进而实现对黏结性煤的利用。本工作采用小型流化床射流预氧化反应装置研究较强黏结性煤预氧化破黏后的产物分布、半焦结构与活性变化,并考察气化操作条件（温度、当量空气系数、水煤比等）对半焦气化行为的影响。结果表明：当预氧化区温度为950℃、当量空气系数为0.13时 ...
曾玺 +4 more
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The development of structurally stable anodes with high capacities and long cycle lives is essential for the development of potassium–ion batteries. Conversion‐type anodes have attracted considerable attention in potassium–ion batteries (PIBs) due to their high theoretical capacities.
Jeong Ho Na +7 more
wiley +1 more source
Gongye shui chuli石化废水浓缩液有机物浓度高、盐度高，且通常含有氰、胺、酚、醇、有机酸碱、有机氯等毒性物质，导致单独的生化工艺对其处理效果不佳。探讨了活性焦吸附、混凝、电子束辐照（EB）、Fe/C微电解、催化臭氧氧化、过硫酸氢钾氧化等单项技术及其部分组合工艺对石化废水浓缩液的处理效果，结果表明，单项技术中EB、Fe/C微电解对COD的去除效果好，且在经济性、可行性方面更具优势，各组合工艺对COD也具有明显的去除作用，Fe/C微电解+ EB工艺处理后出水COD最低。测定了各工艺出水B/C，结果表明废水可生化性显著提高 ...
周月东 +6 more
doaj
[Impact of optimizing the quality control system on newborn screening outcomes for congenital hypothyroidism]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiWang J +6 more
europepmc +1 more source