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2.1 Jose David Saldivar: ‘Border Matters: Remapping American Culture
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In his groundbreaking publication, Border Matters Saldívar examines the way in which ...

In his groundbreaking publication, Border Matters Saldívar examines the way in which borderland authors construct literary space in order to represent cultural encounters. He suggests that the border represents an ideological divide between two nations and is a "primary agent" of difference (xii). To develop this idea this dissertation works with the notion of border as a form of metaphysical crossing point – between nations and between human experiences.

Subject:
English Language Arts
Material Type:
Reading
Author:
حليمه علي أبوعابد عسيري
Date created
13-جمادي الآخرة-1438
ACTIVE BELITE β-C2S AND THE HYDRATION OF CALCIUM SULFOALUMINATES PREPARED FROM NANO-MATERIALS
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The aim of the present work is to study the effect of ...

The aim of the present work is to study the effect of active belite on the hydration of C4A3S̅ and C4AS̅. The results revealed that
the active β-C2S prevents the formation of crystalline ettringite and monosulfate hydrate as detected from the results of XRD.
On the other side, the sulfoaluminate hydrates such as AFt and AFm were detected by using DSC technique. Gismondine
C4Al8Si8O32·16H is formed from the reaction of β-C2S or CSH with the liberated Al(OH)3 from the hydration of C4A3S̅. This
phase was not detected with the other monosulfate mix C4AS̅. This is mainly due to the absence of AH3 during the hydration
of C4AS̅. The results of XRD patterns are in good agreement with those obtained from DSC thermograms

Subject:
Life Science
Material Type:
Case Study
Author:
إيناس عبد السميع أحمد
Date created
17-شعبان-1438
Activated and Nonactivated Date Pits Adsorbents for the Removal of Copper(II) and Cadmium(II) from Aqueous Solutions
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The present study aims to investigate the adsorption behavior of Cu(II) and ...

The present study aims to investigate the adsorption behavior of Cu(II) and Cd(II) ions from wastewater onto low-cost adsorbents either raw date pits (RDP), cheap agricultural and nontoxic materials, or chemically activated carbon (ADP) prepared by modified date pits using phosphoric acid. A series of experiments were conducted in a batch system to evaluate the effect of system variables. The adsorption process is affected by various parameters such as solution pH, contact time, initial concentrations of metals, and adsorbent dose. The optimum pH required for maximum adsorption was found to be 5.8±0.5. The experimental data were tested using Langmuir, Freundlich, Dubinin-Radushkevich (D-R) isotherm equations. It was observed that the adsorption capacity of date pits increased after treatment with phosphoric acid. The maximum uptake capacities (Qm) were 7.40 and 33.44 mg copper(II) per gram of RDP and ADP. respectively, while 6.02 and 17.24 mg cadmium(II) per gram of RDP and ADP. .

Subject:
Life Science
Material Type:
Case Study
Author:
إيناس عبد السميع أحمد
Date created
17-شعبان-1438
Application of first law of thermodynamics for a closed system
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Application of first law of thermodynamics for a closed system 1- First ...

Application of first law of thermodynamics for a closed system
1- First law of thermodynamics for a closed system
2- Control volume
3- Conservation of mass principle

Subject:
Physics
Material Type:
Lecture
Lesson
Provider:
King Khalid University
Author:
D. Jamel Mohammed Bechir Madiouli
King Khalid University
Date created
13-شعبان-1438
Application of first law of thermodynamics for an opened system (PART I)
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Application of first law of thermodynamics for an opened system (PART I) ...

Application of first law of thermodynamics for an opened system (PART I)
1- Mass flow rate
2- Volume flow rate
3- Steady flow process

Subject:
Physics
Material Type:
Lecture
Lesson
Provider:
King Khalid University
Author:
D. Jamel Mohammed Bechir Madiouli
King Khalid University
Date created
13-شعبان-1438
Application of first law of thermodynamics for an opened system (PART II)
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Application of first law of thermodynamics for an opened system (PART II) ...

Application of first law of thermodynamics for an opened system (PART II)
1- Energy balance for an opened system
2- Energy balance for SSSF
3- Energy balance for USUF

Subject:
Physics
Material Type:
Lecture
Lesson
Provider:
King Khalid University
Author:
D. Jamel Mohammed Bechir Madiouli
King Khalid University
Date created
13-شعبان-1438
Applications of ideal gas
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Applications of ideal gas 1- Heat capacity at constant pressure 2- Heat ...

Applications of ideal gas
1- Heat capacity at constant pressure
2- Heat capacity at constant volume
3- Specific heat
4- Internal energy of ideal gas
5- Enthalpy of ideal gas
6- Specific heat ratio

Subject:
Physics
Material Type:
Lecture
Lesson
Provider:
King Khalid University
Author:
D. Jamel Mohammed Bechir Madiouli
King Khalid University
Date created
13-شعبان-1438