Results 71 to 80 of about 138,426 (219)

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

Removing Oxide Layers and Retaining Oxide‐Free Steel Surfaces by Polishing in Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
In this study, the efficacy of wet mechanical polishing under an oxygen‐free atmosphere for deoxidation and the retention of an oxide‐free steel surface are elucidated using X‐ray photoelectron spectroscopy. The methodology proved successful; however, the results were highly dependent on the preparation of the solvents used to clean the samples after ...
Friedrich Bürger, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +2 more
wiley   +1 more source

Strongly Unforgeable and Efficient Proxy Signature Scheme with Fast Revocation Secure in the Standard Model

International Journal of Distributed Sensor Networks, 2016
The existing proxy signature schemes with the proxy revocation function are proven to be malleable and do not possess strong unforgeability. Motivated by these concerns, a new proxy signature scheme with fast revocation is proposed, and it can be proved ...
Liaojun Pang, Huiyang Zhao, Xia Zhou, Huixian Li   +3 more
doaj   +1 more source

E-government Data Security Exchange Scheme Based on Proxy Re-signature [PDF]

Jisuanji gongcheng, 2017
Considering the security problem of e-government data exchange,a double trapdoor Hash function is proposed by using discrete logarithm assumption.Moreover,this function is proved to satisfy the properties,such as validity,trapdoor collision,collision ...
YANG Xiaodong,GAO Guojuan,ZHOU Qixu,LI Yanan,WANG Caifen
doaj   +1 more source

One Attribute-Based Proxy Signature [PDF]

Proceedings of the 2015 International Conference on Mechatronics, Electronic, Industrial and Control Engineering, 2015
For Identity-based proxy signature, when the original signer cannot sign for some reason,he delegate his signing capabilities to a person with an identity, in order to expand the scope of the proxy signer, an entity with a series of attribute properties can perform the right of signature.
Haiping Si, Yufeng Guo, Yu Yan, Changxia Sun   +3 more
openaire   +1 more source

Prenucleation Species Dictate Foreign Ion Incorporation in the Biomineral Precursor Amorphous Calcium Carbonate

Advanced Functional Materials, EarlyView.
ACC forms via aggregating prenucleation clusters that gatekeep its chemical composition. Ion identity steers the path: Ba and Sr substitute Ca in clusters, thereby inhibiting nucleation, with a dose‐dependent switch of Sr to induction. Mg partitions into Mg‐rich and Mg‐poor clusters; the latter form ACC, expelling Mg.
Qianyu Zhao, Patrick Duchstein, Benedikt Demmert, Thi Q. Nhi Dao, Krishnaveni Anjala, Evelyn Gruber, Franziska Gröhn, Dirk Zahn, Dorrit E. Jacob, Stephan E. Wolf   +9 more
wiley   +1 more source

Proxy Signature-Based Management Model of Sharing Energy Storage in Blockchain Environment

Applied Sciences, 2020
Sharing energy storage (SES) is a novel business model in order to increase the profits and improve the utilization rate of idle energy storage facilities.
Yiting Wang, Weiqiang Qiu, Ling Dong, Wei Zhou, You Pei, Li Yang, Heng Nian, Zhenzhi Lin   +7 more
doaj   +1 more source

Nanodiamond Quantum Sensors for Probing Free Radical Biology

Advanced Functional Materials, EarlyView.
Free radicals play key roles in cellular signaling and disease but remain difficult to measure in living systems. Nanodiamonds (NDs) with nitrogen‐vacancy (NV) centers enable quantum sensing of local magnetic noise via T₁ relaxometry, providing nondestructive radical detection in living cells.
Qi Lu, Yingke Wu, Tanja Weil
wiley   +1 more source

High‐Throughput Exfoliation of Optoelectronic‐Grade MoS2 via Turbulent‐Flow Wet Jet Milling

Advanced Functional Materials, EarlyView.
A scalable wet jet milling exfoliation method is demonstrated for producing optoelectronic‐grade MoS2 nanosheets using environmentally friendly ethyl cellulose in ethanol dispersion media. Guided by fluid dynamics modeling, this approach is optimized to achieve record‐high exfoliation throughput and concentration.
Maryam Khalaj, Shreyash S. Hadke, Lindsay E. Chaney, Janan Hui, Thomas Birge, Linda Li, Vinod K. Sangwan, Mark C. Hersam   +7 more
wiley   +1 more source

Unveiling the Role of Curvature in Carbon for Improved Energy Release of Ammonium Perchlorate

Advanced Materials, EarlyView.
High‐curvature carbon materials identified via machine learning and simulation can enhance the heat release and combustion performance of ammonium perchlorate. ABSTRACT The catalytic role of carbon curvature in the thermal decomposition of ammonium perchlorate (AP) remains largely unexplored. To address this gap, this study employs machine learning and
Dan Liu, Keliang Song, Haorui Zhang, Zhipeng Liu, Guansong He, Junru Wang, Wenming Yang, Xu Zhao, Zhijian Yang   +8 more
wiley   +1 more source