Results 41 to 50 of about 70,671 (203)
A new disease resistance, early ripening tomato variety – Xia Fen (pink colour tomato) [PDF]
, 1995 摘要利用黄粉选6 株系作母本, 8512 作父本配制而成的一代杂种一霞粉, 熟期较对 照苏抗9 号早3 一5天, 抗烟草花叶病毒病, 早熟、丰产, 每66.7m, 早期产量263kg, 总产量4436kg。果实圆整, 品质好, 单果重150 一1809, 适宜保护地早熟栽培及春秋季露地 栽培。 现已在江苏 安徽、山东、浙江、天津、江西、上海、湖北等省市大面积推广。关键词番茄; 霞粉 ...
Long, M, Lu, C, Xu, H, Yang, R, Yu, W
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When and why to give shorebirds a head start
Conservation Biology, EarlyView.Abstract Headstarting is a translocation technique involving the hatching or rearing of wild eggs or young in captivity and the release of those individuals back to the wild at or before independence. It has been trialed as a conservation intervention for shorebirds over recent decades to improve the population trend of target populations by increasing
Lynda Donaldson +4 more
wiley +1 more source
Experimental Study on Multi-Jets Electrospinning via Screw Electrode [PDF]
, 2016 电纺纳米纤维在过滤材料、传感器、生物医疗、能量存储等领域都有着极其广阔的应用前景，而批量制备纳米纤维是其从实验室走向市场的关键。本文中提出一种基于螺杆电极的多射流静电纺丝装置，研究了多射流喷射调控规律，开发了带自清洁功能的储液滑块以实现纺丝溶液的持续、均匀供给，实现了纳米纤维的批量化稳定喷射。 通过ANSYS仿真分析了螺杆电极表面电场分布，完成带螺杆电极多射流静电纺丝平台机械结构与电气控制系统的设计开发；利用螺杆带动储液滑块往复运动，实现纺丝溶液的均匀涂布与持续供液 ...
陈新敏
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Effects of parachute science on local research capacity 降落伞科学对当地研究能力的影响
Conservation Biology, EarlyView.Abstract Strengthening research capacity is essential to address the global biodiversity crisis. Yet, parachute science often undermines this goal, and its prevalence, costs, and benefits are unclear. We analyzed 13,502 publications on primate research that we extracted from Scopus (1960–2022) to evaluate the effects of parachute science on local ...
Li Yang +11 more
wiley +1 more source
Haiyang yu huzhao全氟辛酸(perfluorooctanic acid, PFOA)是一种具有多系统毒性的新污染物，对双壳贝类可产生一定的免疫毒性效应，损害机体的正常免疫功能。益生菌作为一种安全无毒的食品级制剂，已被应用于水产养殖行业，用以提高水生生物的免疫防御能力。然而，益生菌对贝类中新污染物所引发的生物毒性是否有消减作用，目前尚不可知。据前期研究，新污染物PFOA在水生生物尤其贝类中存在较高的蓄积量，具有潜在的生态和健康风险。因此，探索经济贝类中益生菌对PFOA免疫毒性的消减作用具有重要意义 ...
周 扬 +6 more
doaj +1 more source
The Design and Implementation of Coal Output Metrology Management System Based on Internet of Things [PDF]
, 2015 物联网技术随着近年的发展已逐步运用到各类工业生产环境中，本文针对国内外煤炭产量计量行业的现状、缺陷及发展，提出将视频监控同煤矿产量实时计量相结合的物联网技术方案，解决了类似产量数据无法快速汇总，人工操作易误差以及各种违规操作无法现场还原等缺陷。 针对这些问题，为了提高煤炭计量技术效率，根据相关标准设计了“基于物联网的煤炭计量系统”。系统以物联网技术为基础，利用VisualC++软件开发平台与MFC基础库辅助开发了一套界面友好、操作简单、功能完备的煤炭计量系统软件 ...
赵理
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The collective application of shorebird tracking data to conservation
Conservation Biology, EarlyView.Abstract Addressing urgent conservation issues, such as the drastic declines of North American migratory birds, requires creative, evidence‐based, efficient, and collaborative approaches. The abundance of over 50% of monitored North American shorebird populations has declined by over 50% since 1980. To address these declines, we developed a partnership
Autumn‐Lynn Harrison +71 more
wiley +1 more source
, 1989 1983—1984年,测定了东湖水柱总沉降颗粒有机物中的碳、氮、磷、叶绿素a含量和浮游动物数量,以及该湖浮游动、植物优势种的干重/湿重、C/N及C/P比值。利用所得数值计算出其颗粒有机碎屑的沉降速率。东湖这两年的颗粒有机碎屑的沉降速率[g/m~2·a),Ⅰ站分别为10.67与10.97(碳),2.15与2.68(氮)及0.29与0.30(磷);Ⅱ站分别为10.35与7.26(碳),2.17与1.12(氮)及0.22与0.16(磷)。与水柱浮游植物净生产量相比 ...
林婉莲,刘鑫洲
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Differences in characteristics between naturalized threatened plants and other threatened plants
Conservation Biology, EarlyView.Abstract Many non‐native plant species introduced by humans have become naturalized. At the same time many species are threatened in their native range. However, the number of plant species threatened in their native range that are naturalized elsewhere remains unknown.
Weihan Zhao +10 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2018 基于快速有效的基质净化方法，结合超高效液相色谱-串联质谱技术，建立了测定蜂蜜中39种抗生素及25 种农药的检测方法.蜂蜜样品经乙腈＋水（v/v=8：2）提取，用PRiME HLB净化，超高效液相色谱-串联质谱(ultra-performance liquid chromatography tandem mass spectrometry,UPLC-MS/MS)分析测定，通过多反应监测模式(MRM)分析目标化合物，并进行基质标准曲线定量.在测定浓度范围内呈良好线性关系，相关系数大于0.99 ...
WANGJianmei(汪建妹) +6 more
doaj +1 more source