Results 11 to 20 of about 764,838 (156)
ABSTRACT Developing multifunctional luminescent materials with tunable spectra is crucial for plant lighting and information–security applications. To address the critical requirement of plant photosynthesis for blue and red spectral components, a novel lead‐free double perovskite Cs2NaGdCl6: Sb3+, Pr3+ phosphor was designed and synthesized via a ...
Huangyao Chen +7 more
wiley +1 more source
对于配水工具处于斜井段的注水井,测试和投捞工具在斜井段方向的牵引力无法克服其摩擦阻力,造成仪器下放遇阻或不到位;打捞时,配水心子不易与配水器工作筒脱开,打捞力偏大,甚至造成拔脱事故。为此,研究了毛细管液压投捞测调技术,并配套研制了扩张式液力推送器和卡瓦式液压增力打捞器。试验结果表明,应用毛细管液压控制技术可完成井下仪器各工作状态的长距离控制,保证斜井段分层测调的顺利实施;扩张式液力推送器提高了斜井段流量计和投送工具的下行成功率,可实现大斜度井段的可测调性 ...
贾庆升 +4 more
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Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant phenology is crucial for understanding plant growth and climate feedback. It affects canopy structure, surface albedo, and carbon and water fluxes. While the influence of environmental factors on phenology is well‐documented, the role of plant intrinsic factors ...
Yunpeng Luo +8 more
wiley +1 more source
Genomic responses to increased temperature and pollinator selection in Brassica rapa L.
Summary Rapid environmental change reshapes both abiotic stress and biotic interactions, yet it remains unclear how these combined forces structure plants' genomic adaptation. In particular, the joint influence of temperature and pollinator identity, two ecological axes undergoing simultaneous global shifts, has rarely been quantified at genomic ...
Yanqian Ding, Florian P. Schiestl
wiley +1 more source
针对现有的偏心分注工具不能满足薄互层油藏小卡距细分注水、原K344型偏心封隔配水器不适应大斜度注水井分注的问题,研制了P2Y341-115型细分层封隔配水器。该工具将1个压缩式封隔器与2台偏心配水器的功能集成一体,实现多个连续薄夹层注水井的分注,并大幅提高测试调配效率。现场应用7口井,封卡最薄油层4.4 m,最大井斜31.75°,均完成了分层验封、分层流量测试及水嘴投捞,平均配注符合率达到89.8%,平均使用寿命达到1 a以上。
doaj
ABSTRACT The past decade has witnessed a burgeoning demand of metals for global industrial development and infrastructure. Meanwhile, the depletion of mineral resources and the environmental damage caused by wastewater discharges pose significant threats to both economic and ecological sustainability. Fortunately, metal‐containing wastewaters also hold
Fei Zhang +6 more
wiley +1 more source
通过对ZnO避雷器情况的分析,以及比较各种避雷器与GB311.1—83绝缘水平配合的情况,分析ZnO避雷器反映在绝缘配合系数上的特点,比较国际上绝缘配合系数,最后提出了降低绝缘水平的建议。
汪仁根
doaj
Reactive oxygen species act as signaling molecules to control root hair initiation and tip growth
Summary Root hairs (RHs) increase the surface area of roots, facilitating nutrient and water uptake and plant anchorage. RHs form from root epidermal cells and elongate by polar tip growth. Reactive oxygen species (ROS) have recently been implicated as important signals that drive RH formation and elongation using both genetic and imaging approaches ...
Megan E. Gerber +2 more
wiley +1 more source
Summary The importance of marine angiosperms, or seagrasses, as foundation species for marine coastal ecosystems is in marked contrast to their low species number of only 70 described taxa. Seagrass species tend to have very similar overall morphologies dictated by hydrodynamic forces of the ocean environment.
Xiaomei Zhang +14 more
wiley +1 more source

