Results 81 to 90 of about 14,499 (248)

Production of middle distillates through olefin oligomerization using ZSM‐5 as a catalyst

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract The global transportation sector relies heavily on gasoline (C5–C12) and diesel (C11–C24), which together account for approximately 60% of its energy needs. Driven by rapid industrialization and urbanization, diesel consumption is outpacing gasoline, with projections estimating global demand by 2035 at 27 million barrels per day for gasoline ...
Thembekile Hoyi, Masikana Milan Mdleleni, Ntalane Sello Seroka, Lindiwe Khotseng   +3 more
wiley   +1 more source

The relationship of women's status and empowerment with skilled birth attendant use in Senegal and Tanzania. [PDF]

, 2015
BackgroundMaternal mortality remains unacceptably high in sub-Saharan Africa with 179,000 deaths occurring each year, accounting for 2-thirds of maternal deaths worldwide.
Gipson, Jessica D, Shimamoto, Kyoko
core   +3 more sources

Revisiting the synthesis of dimethyl carbonate from methanol and carbon dioxide

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract The process for producing dimethyl carbonate (DMC) from carbon dioxide (CO2) and methanol is explored in this article. It provides an overview of the thermodynamics involved in DMC synthesis, discussing the challenges and potential solutions. The article highlights the reported use of catalysts and dehydrating agents to improve DMC yield and ...
Diego Alexander Santos Araque, Niloofar Mozaffari, Louis Fradette, Serge Kaliaguine   +3 more
wiley   +1 more source

Signal Characteristics of Civil GPS Jammers [PDF]

, 2011
This paper surveys the signal properties of 18 commercially available GPS jammers based on experimental data. The paper is divided into two distinct tests.
Dougherty, Ryan C., Mitch, Ryan H., O'Hanlon, Brady W., Powell, Steven P., Psiaki, Mark L.   +4 more
core   +1 more source

Flexible Direct‐Conversion X‐Ray Detectors: From Emerging Materials to Conformal Imaging

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This comprehensive review analyzed the performance, challenges, and future directions of four emerging material systems for next‐generation flexible direct‐conversion X‐ray detectors: organic semiconductors, perovskites, metal–organic frameworks, and inorganic metal compounds.
Haipeng Di, Guoliang Ma, Jiaxin Mu, Kailian Dong, Haibin Li, Manjing Wang, Xin Song, Haojin Li, Jianwei Xu, Yiying Zhao, Jingjing Zhao, Guojia Fang   +11 more
wiley   +1 more source

Correlation Between the Molecular Structure of Metal‐Supporting Ligands and Catalysis in the Oxygenase‐Mimicking Immobilized Metal Complex Catalysts

European Journal of Inorganic Chemistry, EarlyView.
The correlation between the structures of metal complexes immobilized in the mesopores of hydrophobically modified silicate supports was examined in relation to the catalytic activities toward C‐H oxidation. On the alkene oxidation with H2O2, the iron catalyst bearing bis(imidazolyl)methane ligand promotes allylic oxidation, whereas the mononuclear ...
Yuta Akizawa, Hiroe Fukuzaki, Nana Aizawa, Sho Ikeda, Airi Kawabe, Saori Nishiyama, Iori Nagasawa, Masaya Okamura, Shiro Hikichi   +8 more
wiley   +1 more source

Seasonal drivers of plant–soil–microbial community structure and functions in Western Himalayan grasslands, Pakistan

Grassland Research, EarlyView.
Plant species richness was greater in summer in both alpine and subalpine grassland ecosystems. Soil moisture demonstrates significant positive correlations with soil organic carbon and total nitrogen across seasonal periods. Microbial α‐diversity peaks during summer but maintains functional stability across seasons.
Huma Ali, Muhammad Rafiq, Allan Degen, Ben Sparrow, Zhanhuan Shang   +4 more
wiley   +1 more source

Using radar interferometry and SBAS technique to detect surface subsidence relating to coal mining in Upper Silesia from 1993-2000 and 2003-2010

Environmental & Socio-economic Studies, 2016
In the presented research ERS1-2 and Envisat ASAR archive data were used for the periods 1993 – 2000 and 2003 – 2010. The radar images were acquired over Upper Silesia in southern Poland.
Nádudvari Ádám
doaj   +1 more source

Use of an electronic Partograph: feasibility and acceptability study in Zanzibar, Tanzania

BMC Pregnancy and Childbirth, 2018
Background The ePartogram is a tablet-based application developed to improve care for women in labor by addressing documented challenges in partograph use.
Lindsay Elizabeth Litwin, Christina Maly, Asma Ramadan Khamis, Cyndi Hiner, Jérémie Zoungrana, Khadija Mohamed, Mary Drake, Michael Machaku, Mustafa Njozi, Salhiya Ali Muhsin, Yusuph K. Kulindwa, Patricia P. Gomez   +11 more
doaj   +1 more source

Operando Raman Spectroscopic Studies on Propane Dehydrogenation Over Co‐Based Catalysts

Journal of Raman Spectroscopy, EarlyView.
Operando Raman spectroscopy was applied to investigate carbon‐containing species during propane dehydrogenation to propene over 3‐wt.% cobalt on silicalite‐1. The emergence of G and D Raman bands correlated with increased propene formation, suggesting that coverage of metallic Co by carbon species may be essential for selective propane dehydrogenation.
Jana Weiß, Qiyang Zhang, Evgenii V. Kondratenko, Christoph Kubis   +3 more
wiley   +1 more source