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Publication Date

Thu Dec 01 2016

Journal Name

Bulletin Of The Iraq Natural History Museum (p-issn: 1017-8678 , E-issn: 2311-9799)

Volume

14

Issue Number

2

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FIRST RECORD OF NIGRA SCALE, PARASAISSETIA NIGRA (NIETNER, 1861) (HEMIPTERA; COCCIDAE) AS A PEST OF FIG TREES IN IRAQ

Coccidae

Fig

Hemiptera

Iraq

Nigra scale

M. S.

I. M.

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The nigra scale, Parasaissetia nigra (Nietner, 1861) (Hemiptera, Coccidae) recorded as a new insect pest attacking fig trees, Ficus carica (Moraceae) in Iraq. It was observed during April 2014 in residential garden at Al-Hurriyah district in Baghdad.

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Publication Date

Fri Jan 20 2023

Journal Name

Ibn Al-haitham Journal For Pure And Applied Sciences

Using the Size Strain Plot Method to Specity Lattice Parameters

Department of Phesics

College of Education for Pure Sciences

Ibn Al - Haitham

University of Baghdad

Baghdad

Iraq

Marwah T.

Khalid H.

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X-ray diffractometers deliver the best quality diffraction data while being easy to use and adaptable to various applications. When X-ray photons strike electrons in materials, the incident photons scatter in a direction different from the incident beam; if the scattered beams do not change in wavelength, this is known as elastic scattering, which causes amplitude and intensity diffraction, leading to constructive interference. When the incident beam gives some of its energy to the electrons, the scattered beam's wavelength differs from the incident beam's wavelength, causing inelastic scattering, which leads to destructive interference and zero-intensity diffraction. In this study, The modified size-strain plot method was used to examin

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