Results 291 to 300 of about 306,957 (330)

Advancing from MOFs and COFs to Functional Macroscopic Porous Constructs

Advanced Materials, EarlyView.
This review study investigates the recent progress and methodologies for manufacturing metal–organic framework (MOF) or covalent–organic framework (COF)‐based 3D structured macroscopic porous constructs with high structural integrity, providing the possibility to control their porosity across dimensions.
Seyyed Alireza Hashemi, Ahmadreza Ghaffarkhah, Ali Akbar Isari, Mahyar Panahi‐Sarmad, Feng Jiang, Orlando J. Rojas, Stefan Wuttke, Mircea Dincă, Mohammad Arjmand   +8 more
wiley   +1 more source

Untangling the Role of Capping Agents in Manipulating Electrochemical Behaviors Toward Practical Aqueous Zinc‐Ion Batteries

Advanced Materials, EarlyView.
Inspired by the critical role of capping agents in nanomaterials synthesis and bulk crystal growth, the role of capping agents in manipulating the electrochemical behaviors of AZIBs is untangled. The multifunctional role of the capping agents in terms of the Zn anode, electrolyte, and cathode validates stable and practical AZIBs. Abstract Long‐standing
Ruwei Chen, Yunpeng Zhong, Peie Jiang, Hao Tang, Fei Guo, Yuhang Dai, Jie Chen, Jingyi Wang, Jiyang Liu, Song Wei, Wei Zhang, Wei Zong, Fangjia Zhao, Jichao Zhang, Zhengxiao Guo, Xiaohui Wang, Guanjie He   +16 more
wiley   +1 more source

State‐of‐the‐Art, Insights, and Perspectives for MOFs‐Nanocomposites and MOF‐Derived (Nano)Materials

Advanced Materials, EarlyView.
Different approaches to MOF‐NP composite formation, such as ship‐in‐a‐bottle, bottle‐around‐the‐ship and in situ one‐step synthesis, are used. Owing to synergistic effects, the advantageous features of the components of the composites are beneficially combined, and their individual drawbacks are mitigated.
Stefanos Mourdikoudis, Subhajit Dutta, Saqib Kamal, Sergio Gómez‐Graña, Isabel Pastoriza‐Santos, Stefan Wuttke, Lakshminarayana Polavarapu   +6 more
wiley   +1 more source

Van Der Waals Hybrid Integration of 2D Semimetals for Broadband Photodetection

Advanced Materials, EarlyView.
Advanced broadband photodetector technologies are essential for military and civilian applications. 2D semimetals, with their gapless band structures, high mobility, and topological protection, offer great promise for broadband PDs. This study reviews the latest advancements in broadband PDs utilizing heterostructures that combine 2D semimetals with ...
Xue Li, Kunxuan Liu, Di Wu, Pei Lin, Zhifeng Shi, Xinjian Li, Longhui Zeng, Yang Chai, Shu Ping Lau, Yuen Hong Tsang   +9 more
wiley   +1 more source

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Attenuation Coefficient Measurement in the Thyroid

Journal of Ultrasound in Medicine, 2003
To assess the feasibility of a novel method of measuring the attenuation coefficient in the thyroid, which offers less variability of results than the conventional method.In our new method, the attenuation coefficient was evaluated on the basis of the following equation with sound field correction: alpha = -1/4[Fc(z)-epsilon(z)] x d/dz[log(M0(z))-tau(z)
Yasutomo Fujii, Kouichi Itoh, Kiyoka Omoto, Nobuyuki Taniguchi   +3 more
openaire   +5 more sources

Mass-attenuation coefficients of beta particles

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes, 1990
Abstract A method to obtain mass-attenuation coefficients of β particles is described. This method is based upon the simulation of β emission by means of the β energy spectrum. The range of the β particle is chosen as random incidence by means of range distribution of monoenergetic electrons which have the same energy as the β particle.
CENGIZ, AHMET, OZMUTLU, C
openaire   +3 more sources

Relative Spectral Attenuation Coefficients of Water

Applied Optics, 1967
The relative variation of attenuation coefficient with wavelength has been studied in the laboratory for distilled water and seawater. The study was for the purpose of locating any very fine structure in the attenuation vs wavelength curve. The spectral region from 3750 A to 6850 A was examined with 0.2 A resolution; water paths were 9.7 m and 19.5 m ...
L. F. Drummeter, G. L. Knestrick
openaire   +3 more sources

Investigation of photon attenuation coefficients for marble

Journal of Radiological Protection, 2005
The total linear attenuation coefficients micro (cm(-1)) have been obtained using the XCOM program at photon energies of 1 keV to 1 GeV for six different natural marbles produced in different places in Turkey. The individual contribution of photon interaction processes to the total linear attenuation coefficients for marble has been investigated.
Kilincarslan, S, Basyigit, Celalettin, Akkurt, I, AKKURT, A   +3 more
openaire   +4 more sources

Attenuation Coefficient Estimation of Normal Placentas

Ultrasound in Medicine & Biology, 2019
Attenuation coefficient estimation has the potential to be a useful tool for placental tissue characterization. A current challenge is the presence of inhomogeneities in biological tissue that result in a large variance in the attenuation coefficient estimate (ACE), restricting its clinical utility. In this work, we propose a new Attenuation Estimation
Farah Deeba, Manyou Ma, Mehran Pesteie, Jefferson Terry, Denise Pugash, Jennifer A. Hutcheon, Chantal Mayer, Septimiu Salcudean, Robert Rohling   +8 more
openaire   +3 more sources

Estimation of the Slope of the Acoustic Attenuation Coefficient

Ultrasonic Imaging, 1984
In this paper, a theoretical framework is developed which removes the Gaussian assumption commonly used in ultrasonic attenuation estimation based on mean frequency shift. The theory is developed for general non-Gaussian spectra and for media whose attenuation coefficient is nonlinear with frequency.
J. F. Havlice, M. Nassi, Shmuel Shaffer, D. W. Pettibone   +3 more
openaire   +3 more sources