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APHIS小型高光谱成像仪
APHIS 高光谱 成像仪
2024/10/29
项目简介：1.通过同心光学结构的优化，保证系统装配空间合理的同时有效控制了系统的谱线弯曲和色畸变，优于市场产品约一个量级。2.基于市场成熟探测器、光栅等器件，利用光路的优化、折转完成紧凑型高光谱成像系统。3.基于模板狭缝刻蚀技术，解决机械狭缝在使用、装配过程中沾染灰尘等工程控制难题。
Insecticidal Activity of Chitosans of Different Molecular Weights and Chitosan-metal Complexes against Cotton Leafworm Spodoptera littoralis and Oleander Aphid Aphis nerii
arthropod pests larval mortality biopolymer
2015/3/9
As an alternative to synthetic pesticides, chitosan has received much attention as a biopolymer active against
some agricultural pests. The, insecticidal activity of chitosans of four molecular weig...
Differences in growth and yield responses to Aphis gossypii Glover between different okra varieties
Aphis gossypii okra yield plant growth
2015/3/1
The reactions of five commercial varieties of okra, Abelmoschus esculentus, to A. gossypii were evaluated under semiarid field conditions. Each experimental plant of varieties Clemson spineless, Clems...
Biochemical Characterisation of α-Amylase in Two Aphid Species, Aphis fabae Scopoli (Hemiptera: Aphididae) and A. gossypii Glover (Hemiptera: Aphididae)
aphids gel assay starch
2015/3/11
We identify and characterise α-amylases of the two aphid species, A. fabae and A. gossypi. To do this, α-amylases of
the two insect species were extracted and their activities were determined using ...
黄瓜蚜虫的图像识别与计数方法（Image Recognition and Counting for Glasshouse Aphis gossypii）
黄瓜蚜虫 温室 图像处理 粘连 检测
2010/12/29
通过分析蚜虫区域、绿色背景和蚜叶区的G分量特点，建立G分量阈值确定原则，并采用G分量阈值将蚜虫区域和非蚜虫区域分离开。针对蚜虫的粘连重叠问题，利用扩展极小值阈值变换的方法对输入图像进行标记，对标记后的图像进行距离变换和分水岭分割，以去除粘连。试验结果表明：算法能有效地分割粘连重叠的蚜虫，过分割率与欠分割率之和为3.14%。计数准确率达到96.2%，高于直接计数的80.7%。
Insect Growth Regulatory Activity of Adiantum Capillus-veneris Against Plutella Xylostella and Aphis Craccivora in Ethanol and Methanol
Insect Growth Regulatory Activity Adiantum Capillus-veneris Plutella Xylostella Aphis Craccivora Ethanol Methanol
2010/12/16
Insect Growth Regulatory Activity of Adiantum Capillus-veneris Against Plutella Xylostella and Aphis Craccivora in Ethanol and Methanol。
STUDY OF OCCURRENCE AND HARMFULNESS OF BEAN APHID（Aphis fabae complex）INFESTING SOSNOWSKI’S HOGWEED（Heracleum sosnowskyi Manden）
Heracleum sosnowskyi Manden Sosnowski’s hogweed Aphis fabae complex
2009/3/31
Over 1999-2002 a research was carried out in the region of Bydgoszcz, at Minikowo, Mochełek and Topolno, on the dynamics of the occurrence and harmfulness of bean aphid (Aphis fabae complex) on ...
Resistance of Aphis gossypii (Homoptera: Aphididae) to selected insecticides on cotton from five cotton production regions in Shandong, China
Aphis gossypii cotton insecticide resistance
2009/3/5
Resistance of cotton aphid (Aphis gossypii Glover) collected from four leading cotton producing regions and one non-cotton producing region in Shandong Province, China, in 1985, 1999, and 2004 to fe...
Development and Fecundity of Aphis Gossypii Glover（Homoptera：Aphididae）on Three Malvaceae Hosts
Aphis Gossypii Glover Three Malvaceae Hosts
2009/1/15
Aphis gossypii Glover (Homoptera, Aphididae) obtained from cotton fields near Adana in the east Mediterranean region of Turkey were colonized on Gossypium hirsutumL. ‘Çukurova 1518’ in a clima...
Functional Response of Two Coccinellid Predators, Scymnus levaillanti and Cycloneda sanguinea, to the Cotton Aphid, Aphis gossypii
Coccinellid Scymnus levaillanti Cycloneda sanguinea functional response aphid density handling time attack constant
2009/1/12
Functional responses of 2 female coccinellid predators, Scymnus levaillanti and Cycloneda sanguinea, to the cotton aphid, Aphis gossypii, at various temperatures were studied under laboratory conditi...
Repellent Activity of Extracts of Wild Rice Species against Panonychus citri and Aphis citricola in Associated with Esterase Isoenzyme in Insests
wild rice Panonychus citri Aphis citricola repellent activity esterase isoenzyme extracts
2009/1/7
Six species of wild rice with different ecophenotypes including Oryza grandiglumis (E6-1, E6-3 / 6-4), O. minuta (E13-9, E13-13), O. officinalis (E15-8, E15-13), O. punctata (E16-1, E16-3, E16-13), O....
April 15, 2007,The Department of Agriculture's top veterinarian, Dr. W. Ron DeHaven, has been chosen as the next AVMA executive vice president.
美国动物和植物健康检查服务（APHIS）是美国农业部的主要部分之一。其任务是保护和促进美国农业健康，管理动物的安全活动，执行野生动植物破坏管理行为。该网站提供了有关APHIS的信息，包括其介绍、战略规划、组织机构、领导阶层、人员目录、1995-2003年的新闻稿、出版物、录象、项目计划、热点话题、信息种类、搜索服务以及相关链接等。