Results 51 to 60 of about 212 (157)

The Qrc Membrane Complex, Related to the Alternative Complex III, Is a Menaquinone Reductase Involved in Sulfate Respiration [PDF]

Journal of Biological Chemistry, 2010
Biological sulfate reduction is a process with high environmental significance due to its major contribution to the carbon and sulfur cycles in anaerobic environments. However, the respiratory chain of sulfate-reducing bacteria is still poorly understood.
Sofia S, Venceslau, Rita R, Lino, Ines A C, Pereira   +2 more
openaire   +2 more sources

Strengthening Humanitarian Aid: Qatar's NGO‐Driven Framework for Supporting Syrian Refugees in Türkiye

International Migration, Volume 63, Issue 4, August 2025.
ABSTRACT This study examines Qatar's NGO‐driven humanitarian aid framework for Syrian refugees in Türkiye, focusing on structural, cultural and strategic challenges in delivering sustainable support. Through thematic analysis of interviews with Qatari NGO and Syrian civil society stakeholders, key issues such as resource constraints, administrative ...
Moosa Elayah
wiley   +1 more source

Exploring Energy Conservation in Sulphate‐Dependent Anaerobic Methane‐Oxidising Consortia Through Metabolic Modelling

Environmental Microbiology, Volume 27, Issue 7, July 2025.
This study presents a metabolic model to quantify energy conservation in sulphate‐dependent anaerobic methane oxidation. Results reveal that anaerobic methanotrophic archaea and sulphate‐reducing bacteria exhibit similar ATP yields (YATP), achieving high thermodynamic efficiency (η) but distinct returns on investment (ROI), providing key insights into ...
Gordon Bowman, Zena Jensvold, Qusheng Jin   +2 more
wiley   +1 more source

A Structural Approach to Synthesizing and Analyzing Quasi-Resonant and Multi-Resonant Converters

, 2014
[[abstract]]This paper presents a structural approach to synthesizing and analyzing quasi-resonant (QRCs) and multi-resonant converters (MRCs) based on the concept of basic converter units (BCUs).
T.-F. Wu;Y.-K. Chen;C.-H. Yang;S.-A. Liang
core   +1 more source

External Corporate Governance and Corporate Misconduct: A Meta‐Analysis

Corporate Governance: An International Review, Volume 33, Issue 4, Page 832-849, July 2025.
ABSTRACT Research Question/Issue External governance parties deter corporate misconduct through their monitoring. External monitoring increases the probability of corporate misconduct being detected and sanctioned. Current research on the relationship between external governance and corporate misconduct remains fragmented across these detection and ...
Max C. Braun, Simone M. Mueller
wiley   +1 more source

Fixed‐Point Results for (θ,G)‐Quasirational Contraction in Triple Controlled Metric‐Like Spaces With Applications

Mathematical Methods in the Applied Sciences, Volume 48, Issue 9, Page 9920-9933, June 2025.
ABSTRACT In this article, we provided fixed‐point results for (Θ,G1)$$ \left(\Theta, {G}_1\right) $$‐quasirational contraction and (Θ,G2)$$ \left(\Theta, {G}_2\right) $$‐quasirational contraction within the setting of triple controlled metric‐like spaces.
Sadia Farooq, Naeem Saleem, Maggie Aphane, Asima Razzaque   +3 more
wiley   +1 more source

DC-DC Quasi-Resonant Converters: Linear Robust Control [PDF]

, 2004
In this paper, a general robust control synthesis framework is proposed for DC-DC quasi-resonant converters (QRCs) in order to achieve both stability and desired performance,\ud such as reduced sensitivity to load variations, desired disturbance ...
H. Bevrani, Mitani, Yasunori, Y. Mitani, Ise, Toshifumi, Bevrani, Hassan, T. Ise, Tsuji, Kiichiro, K. Tsuji   +7 more
core   +1 more source

Fejér–Riesz factorization in the QRC-subalgebra and circularity of the quaternionic numerical range

Advances in Operator Theory
AbstractWe provide a characterization when the quaternionic numerical range of a matrix is a closed ball with center 0. The proof makes use of Fejér–Riesz factorization of matrix-valued trigonometric polynomials within the algebra of complex matrices associated with quaternion matrices.
Alma van der Merwe, Madelein van Straaten, Hugo J. Woerdeman   +2 more
openaire   +1 more source

Quantum Resonance Core (QRC)

Current quantum communication protocols face fundamental limitations such as cryogenic requirements, complex optical setups, and short coherence times. These issues present significant barriers to building scalable and practical quantum networks. In this paper, we propose a novel solid-state architecture -Quantum Resonance Core (QRC)- designed to ...
openaire   +2 more sources

Seroprevalence of herpes simplex virus type 1 and type 2 among the migrant workers in Qatar. [PDF]

Virol J, 2023
Nasrallah GK, Dargham SR, Al-Sadeq DW, Amanullah FH, Shurrab FM, Nizamuddin PB, Chemaitelly H, Ayoub HH, Abdeen S, Abdelkarim A, Daraan F, Ismail A, Mostafa N, Sahl M, Suliman J, Tayar E, Kasem HA, Agsalog MJA, Akkarathodiyil BK, Alkhalaf AA, Alakshar MMMH, Al-Qahtani AAAH, Al-Shedifat MHA, Ansari A, Ataalla AA, Chougule S, Gopinathan AKKV, Poolakundan FJ, Ranbhise SU, Saefan SMA, Thaivalappil MM, Thoyalil AS, Umar IM, Al Kuwari E, Coyle P, Jeremijenko A, Kaleeckal AH, Abdul Rahim HF, Yassine HM, Al Thani AA, Chaghoury O, Al Kuwari MG, Farag E, Bertollini R, Al Romaihi HE, Al Khal A, Al-Thani MH, Abu-Raddad LJ.   +47 more
europepmc   +1 more source