Results 81 to 90 of about 251,252 (301)

Chemical analysis of aerosol in the Venusian cloud layer by reaction gas chromatography on board the Vega landers [PDF]

The experiment on sulfuric acid aerosol determination in the Venusian cloud layer on board the Vega landers is described. An average content of sulfuric acid of approximately 1 mg/cu m was found for the samples taken from the atmosphere at heights from ...
Bondarev, V. B., Dolnikov, G. G., Drozdov, Y. V., Dyachkov, A. V., Gelman, B. G., Khokhlov, V. N., Melnikov, V. V., Mukhin, L. M., Nenarokov, D. F., Rotin, V. A.   +9 more
core   +1 more source

Coexisting Rashba/Dresselhaus Spin Splitting in Solution‐Processed Bournonite Films Using Circular Photogalvanic Effect

Advanced Functional Materials, EarlyView.
Circular photogalvanic effect measurements and first‐principles calculations reveal spin‐splitting states in solution‐processed bournonite films (CuPbSbS3) due to structural and bulk inversion asymmetry. The results provide experimental confirmation of coexisting Rashba and Dresselhaus spin‐splitting states in this non‐centrosymmetric chalcogenide ...
Aeron McConnell, Sasa Wang, Andrew Grieder, Yuan Ping, David B. Mitzi, Dali Sun   +5 more
wiley   +1 more source

Aniline effect on concrete steel rebar degradation in saline and sulfate media [PDF]

, 2011
Electrochemical potential monitoring experiments were performed on mild steel rebars embedded in concrete admixed with aniline inhibitor and fixed amount of sodium chloride salt partially immersed in sulfuric acid and sodium chloride solution.
Ajayi, O. O., Loto, C. A., Okeniyi, J. O., Omotosho, O. A.   +3 more
core   +2 more sources

From Single Atoms to Nanoparticles: Pathways Toward Efficient and Durable Pt/TiO2 Photocatalysts

Advanced Functional Materials, EarlyView.
Platinum single atoms on TiO2 nanosheets evolve into clusters and nanoparticles under ethanol photoreforming and thermal treatments. By controlling deposition and post‐treatments, particle size and location on specific facets are modulated. The study reveals how stability pathways determine efficiency, guiding the design of more durable photocatalysts.
Juan José Delgado, Enqi Bu, Yaning Han, Carlos López‐Cartes, Mónica Calatayud, Huiyan Pan, Xiaowei Chen   +6 more
wiley   +1 more source

Determination of the viscosity number of thermoplastics in dilute solution; polyamides (PA) [PDF]

This West German Standard presents a test used to determine the viscosity number of polyamides and copolyamides which are easily diluted in sulfuric acid, and for other polyamides which are less easily diluted in sulfuric acid, and which are diluted in m-

core   +1 more source

Photothermal Macroporous Lignin Cryogels for Off‐Grid, Continuous Atmospheric Water Collection via Interlayer Heat Recovery

Advanced Functional Materials, EarlyView.
Photothermal, macroporous lignin‐based cryogels are engineered to convert sunlight into low‐grade heat. Integrated as stacked beds in a drum‐type device, a thin copper interlayer transfers waste heat between beds, enabling interlayer heat recovery and continuous solar cycling.
Jie Yan, Jiqing Lu, Tian Bai, Lin Li, Zhaoxuan Niu, Yiying Yue, Wanli Cheng, Guangping Han, Orlando J. Rojas   +8 more
wiley   +1 more source

Recovery of H2SO4 from spent acid waste using bentonite adsorbent

MATEC Web of Conferences, 2017
Spent acid waste is produced in the petroleum processing industry at the alkylation process unit that requires sulfuric acid as a catalyst to produce iso-octane.
Asof Marwan, Rachman Susila Arita, Nurmawi Winny Andalia, Ramayanti Cindy   +3 more
doaj   +1 more source

Effect of sulfuric acid concentration on morphology of calcium sulfate hemihydrate crystals

Materials Research Express, 2020
Calcium sulfate hemihydrate whiskers were prepared in sulfuric acid-distilled water system by hydrothermal method using calcium sulfate dihydrate as raw materials.
Yubin Wang, Xinyu Mao, Chang Chen, Wangbo Wang, Weiben Dang   +4 more
doaj   +1 more source

Laboratory evaluation of microwave absorption properties under simulated conditions for planetary atmospheres [PDF]

The microwave absorbing properties of gaseous sulfuric acid (H2SO4) under Venus atmospheric conditions are investigated. The results are applied to measurements from Mariner 5, Mariner 10, and Pioneer/Venus Radio Occultation experiments, to determine ...
Steffes, P. G.
core   +1 more source

Method for producing oxygen from lunar materials [PDF]

, 1993
This invention is related to producing oxygen from lunar or Martian materials, particularly from lunar ilmenite in situ. The process includes producing a slurry of the minerals and hot sulfuric acid, the acid and minerals reacting to form sulfates of the
Sullivan, Thomas A.
core   +1 more source