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Doping amino acids with classical gas hydrate inhibitors to facilitate the hydrate inhibition effect at low dosages

Qureshi, M. F.; Khraisheh, Majeda; Almomani, F. ( Blackwell Publishing Ltd , 2020 , Article)

The formation of gas hydrates in offshore subsea lines is a major flow assurance concern for the oil and gas industry. In this work, the thermodynamic hydrate inhibition (THI) effect of doping amino acids (AA) such as ...

Doping of Large Ionization Potential Indenopyrazine Polymers via Lewis Acid Complexation with Tris(pentafluorophenyl)borane: A Simple Method for Improving the Performance of Organic Thin-Film Transistors

Han, Yang; Barnes, George; Lin, Yen-Hung; Marti, Jaime; Al-Hashimi, Mohammed; ... more authors ... less authors ( American Chemical Society , 2016 , Article)

Molecular doping, under certain circumstances, can be used to improve the charge transport in organic semiconductors through the introduction of excess charge carriers which can in turn negate unwanted trap states often ...

Doppler compensation for AF two way relaying over time varying UWA channels

Daoud, Saed; Karakaya, Bahattin; Ghrayeb, Ali ( IEEE , 2014 , Conference Paper)

In this paper, we consider Doppler compensation for time varying underwater acoustic channels. The underlying system model comprises two sources, S1 and S2, communicating with each other through a relay, R. The transmission ...

Doppler compensation for D-STBC coded time-varying underwater acoustic channels

Daoud, Saed; Karakaya, Bahattin; Ghrayeb, Ali ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)

In this paper we investigate the performance of distributed space-time block coding (D-STBC) orthogonal frequency division multiplexing (OFDM) over underwater acoustic (UWA) channels. In particular, we consider a relaying ...

Dorm augmented college assignments

Afacan, Mustafa Oǧuz ( Springer Science and Business Media Deutschland GmbH , 2024 , Article)

In college assignments, a common practice is that students receive their dorm allocation after the realization of college placements. This causes wasted resources and unfair allocation. To fix this, we consider a college ...

Dosage Optimization of Polypropylene Fiber for Strength Enhancement of Cementitious Composites

Irshidat, Mohammad R.; Al Nuaimi, Nasser; Salim, Soheb; Rabie, Mohamed ( Qatar Univesrity Press , 2020 , Conference Paper)

"Concrete is the most commonly used materials for construction in Qatar as well as in the world. Exposure to sever environmental conditions causes physical deterioration of concrete structures and significantly affect ...

Dose of Bicarbonate to Maintain Plasma pH During Maximal Ergometer Rowing and Consequence for Plasma Volume

Nielsen, Henning Bay; Volianitis, Stefanos; Secher, Niels H. ( Frontiers Media S.A. , 2022 , Article)

Rowing performance may be enhanced by attenuated metabolic acidosis following bicarbonate (BIC) supplementation. This study evaluated the dose of BIC needed to eliminate the decrease in plasma pH during maximal ergometer ...

Double EWMA-Based Polynomial Quality Profiles Monitoring

Abdella, Galal M.; Kim, Jinho; Al-Khalifa, Khalifa N.; Hamouda, Abdel Magid ( Wiley , 2016 , Conference Paper)

Profile monitoring is useful whenever the quality is described by a relationship between a response and one or more of explanatory variables. It is conventional to refer to this relationship as Quality Profile. Despite the ...

Double layered polymeric coatings for corrosion protection of steel

Hassanein, Amani; Khan, Adnan; Shakoor, R.A.; Kahraman, Ramazan ( Qatar University Press , 2021 , Poster)

Corrosion is one of the challenging issues faced by many industries, causing substantial economic losses every year due to the degradation of metallic parts, raising many safety concerns. Therefore, it is of utmost relevance ...

Double stage converter with low current stress for low to high voltage conversion in nanogrid

Sadaf, Shima; Al-Emadi, Nasser; Iqbal, Atif; Bhaskar, Mahajan Sagar ( Elsevier Ltd , 2021 , Article)

A low to high voltage conversion technique has been proposed in this paper using double stages of switched inductors for nanogrid applications. The proposed converter topology utilizes fewer components, achieves high voltage ...

Double switch two leg high gain boost converter for renewable energy applications in a DC microgrid

Samiullah, M.; Ashraf, I.; Iqbal, Atif; Lam, J.; Maroti, Pandav Kiran ( Institute of Electrical and Electronics Engineers Inc. , 2020 , Conference Paper)

The voltage output at the terminals of a DC generating source such as Photovoltaic and Fuel cells is not enough to be integrated with the DC bus of a microgrid. Therefore, an efficient DC-DC converter is demanded for ...

The double-edged sword of social media usage during the COVID-19 pandemic: demographical and cultural analyses

Alshare, Khaled A.; Moqbel, Murad; Merhi, Mohammad I. ( Emerald Publishing , 2022 , Article)

Purpose: This exploratory research aims to (1) investigate the bright and dark sides of social media use during the COVID-19 pandemic; (2) explore the impact of demographic factors on social media usage; and (3) assess the ...

Double-zero-event studies matter: A re-evaluation of physical distancing, face masks, and eye protection for preventing person-to-person transmission of COVID-19 and its policy impact

Mengli, Xiao; Lin, Lifeng; Hodges, James S.; Xu, Chang; Chu, Haitao ( Elsevier , 2021 , Other)

In a recent timely systematic review, Chu et al. [1] assessed the effectiveness of face masks, eye protection, and physical distancing for preventing COVID-19. Because the sample sizes are not large, especially in some ...