BINA

3583 articles

75 publishers

Join mailing list

Dec 2023 • Electrocatalysis for Membrane Fuel Cells: Methods, Modeling and Applications …, 2023

Design of PGM‐free ORR Catalysts: From Molecular to the State of the Art

Naomi Levy, Lior Elbaz

The state‐of‐the‐art Platinum group metal (PGM)‐free oxygen reduction reaction (ORR) catalysts have been synthesized using the pyrolysis of iron, nitrogen, and carbon precursors, and result in highly active ORR catalysts, but their undefined structure limits their further development. Since the inspiration for these catalysts came from well‐defined structures of transition metal complexes, it is important to understand the various parameters that govern the reaction potential, selectivity, and the stability with well‐defined catalysts and try to extrapolate them to the pyrolyzed catalysts. In this chapter, we give an overview of the parameters that influence the catalysis of ORR with well‐defined ORR catalysts. These can later be used to further enhance the performance of the state‐of‐the‐art PGM‐free ORR catalysts.

Show more

Dec 2023 • Electrochimica Acta

Iron doped cobalt nickel layered double hydroxide supported on nickel foam as a robust electrocatalyst for highly efficient water oxidation in alkaline sea water

Akanksha Gupta, Hari Krishna Sadhanala, Aharon Gedanken

The seawater electrolysis is an economically favorable approach for water splitting application because seawater is one of the plentiful abundant natural resources on our earth. In water splitting pathway, the anodic half-cell reaction from seawater stills a challenging task due to anodic corrosion and the competitive chloride oxidation process. In the current study, we prepared flower-shaped porous nanorods of iron doped cobalt nickel layered double hydroxide supported on nickel foam (Fe0.05 CoNi LDH/NF), which require very less oxygen evolution reaction (OER) overpotential in 1M KOH (212mV) and alkaline seawater (287mV) to deliver 10 mAcm−2 current density and exhibited remarkable 14h durability. At the same time, post treated sample reveals the better OER activity after chronopotentiometry analysis, because of superior conductivity and corrosion-resistance of the electrocatalyst. The doping of Fe cation …

Show more

Dec 2023 • Journal of Investigative Dermatology

Altered RNA Editing in Atopic Dermatitis Highlights the Role of Double-Stranded RNA for Immune Surveillance

Miriam Karmon, Eli Kopel, Aviv Barzilai, Polina Geva, Eli Eisenberg, Erez Y Levanon, Shoshana Greenberger

Atopic dermatitis (AD) is associated with dysregulated type 1 interferon (IFN)–mediated responses, in parallel with the dominant type 2 inflammation. However, the pathophysiology of this dysregulation is largely unknown. Adenosine-to-inosine (A-to-I) RNA editing plays a critical role in immune regulation by preventing double-stranded (ds) RNA recognition by MDA5 and IFN activation. We studied global A-to-I editing in AD in order to elucidate the role played by altered editing in the pathophysiology of this disease.Analysis of three RNA sequencing (RNA-seq) datasets of AD skin samples revealed reduced levels of A-to-I RNA editing in AD. This reduction was seen globally throughout Alu repeats, as well as in coding genes and in specific pre-mRNA loci expected to create long dsRNA, the main substrate of MDA5 leading to type I IFN activation. Consistently, IFN signature genes (ISG) were upregulated. In contrast …

Show more

Dec 2023 • NAR Genomics and Bioinformatics

Elevated A-to-I RNA editing in COVID-19 infected individuals

Rona Merdler-Rabinowicz, David Gorelik, Jiwoon Park, Cem Meydan, Jonathan Foox, Miriam Karmon, Hillel S Roth, Roni Cohen-Fultheim, Galit Shohat-Ophir, Eli Eisenberg, Eytan Ruppin, Christopher E Mason, Erez Y Levanon

Given the current status of coronavirus disease 2019 (COVID-19) as a global pandemic, it is of high priority to gain a deeper understanding of the disease's development and how the virus impacts its host. Adenosine (A)-to-Inosine (I) RNA editing is a post-transcriptional modification, catalyzed by the ADAR family of enzymes, that can be considered part of the inherent cellular defense mechanism as it affects the innate immune response in a complex manner. It was previously reported that various viruses could interact with the host's ADAR enzymes, resulting in epigenetic changes both to the virus and the host. Here, we analyze RNA-seq of nasopharyngeal swab specimens as well as whole-blood samples of COVID-19 infected individuals and show a significant elevation in the global RNA editing activity in COVID-19 compared to healthy controls. We also detect specific coding sites that exhibit higher editing …

Show more

Dec 2023 • NAR Genomics and Bioinformatics

Elevated A-to-I RNA editing in COVID-19 infected individuals

Rona Merdler-Rabinowicz, David Gorelik, Jiwoon Park, Cem Meydan, Jonathan Foox, Miriam Karmon, Hillel S Roth, Roni Cohen-Fultheim, Galit Shohat-Ophir, Eli Eisenberg, Eytan Ruppin, Christopher E Mason, Erez Y Levanon

Given the current status of coronavirus disease 2019 (COVID-19) as a global pandemic, it is of high priority to gain a deeper understanding of the disease's development and how the virus impacts its host. Adenosine (A)-to-Inosine (I) RNA editing is a post-transcriptional modification, catalyzed by the ADAR family of enzymes, that can be considered part of the inherent cellular defense mechanism as it affects the innate immune response in a complex manner. It was previously reported that various viruses could interact with the host's ADAR enzymes, resulting in epigenetic changes both to the virus and the host. Here, we analyze RNA-seq of nasopharyngeal swab specimens as well as whole-blood samples of COVID-19 infected individuals and show a significant elevation in the global RNA editing activity in COVID-19 compared to healthy controls. We also detect specific coding sites that exhibit higher editing …

Show more

Dec 2023 • Advanced Optical Materials 11 (5), 2201475, 2023

Linear and Nonlinear Optical Properties of Well‐Defined and Disordered Plasmonic Systems: A Review

Racheli Ron, Tchiya Zar, Adi Salomon

Disordered metallic nanostructures have features that are not realized in well‐defined nanometallic counterparts, such as broadband light localization and inhomogeneous refraction index at the nanoscale. Disordered metal systems with a networked inner architecture have both particles and voids with subwavelength dimensions which are randomly 3D organized in space. These disordered structures are benefited from high surface area and damage stability, permit guest materials permeability, and can be achieved in large scales employing less costs and expertise. Their abundant nanosize gaps and sharp tips can interact with incident light over a broadband range to generate a rich pattern of hot‐spots and can therefore function as an artificial leaf, for example. Here, the linear and nonlinear optical properties of both well‐defined and disordered plasmonic structures are reviewed with a focus on largescale 3D …

Show more

Dec 2023 • Israel Journal of Chemistry 63 (12), e202400002, 2023

Advancing the Understanding of Surface Science through Nonlinear Optics and Electrochemistry

Adi Salomon, Malachi Noked, Menny Shalom

Surface characterization is essential for understanding chemical and electrochemical transformations occurring on surfaces or at interfaces. Battery electrode aging processes, biofilm growth, crystallization, and transport/signaling across cellular membranes are only a few examples of such phenomena. This special issue delves into applied electrochemistry and nonlinear optical techniques applicable to surface characterization.

Show more

Dec 2023 • APL Photonics

Tensor characteristics of forward Brillouin sensors in bare and coated fibers

Alon Bernstein, Elad Zehavi, Yosef London, Mirit Hen, Rafael Suna, Shai Ben-Ami, Avi Zadok

Forward Brillouin scattering fiber sensors can detect and analyze media outside the cladding of standard fibers, where guided light does not reach. Nearly all such sensors reported to-date have relied on the radially symmetric guided acoustic modes of the fiber. Wave motion in these modes is strictly dilatational. However, forward Brillouin scattering also takes place through torsional–radial guided acoustic modes of the fiber. Torsional–radial modes exhibit more complex tensor characteristics, and they consist of both dilatational and shear wave contributions. In this work, we show that forward Brillouin sensing through torsional–radial acoustic modes is qualitatively different from processes based on the radial ones. While dilatational wave components may dissipate toward liquids outside the fiber cladding, shear waves do not. Consequently, the effect of outside liquids varies among torsional–radial modes. Those …

Show more

Dec 2023 • Nature Catalysis

Modifying Fe–N interaction to boost catalytic performance

Ulrike I Kramm, Lior Elbaz

Iron–nitrogen–carbon (FeNC) catalysts are a viable alternative to platinum, but still lack the necessary performance. Now, pyrolysis under forming gas is found as a path to boosting their site density, activity and durability.

Show more

Dec 2023 • Electrochemical Society Meeting Abstracts 244

Rationally Designed Spherical V2O5 Encapsulated by 2d-VS2 as High Capacity Insertion Cathode for Mg-Ion Battery

Ayan Mukherjee, Sankalpita Chakrabarty, Malachi Noked

Owing to high energy density and economic viability, rechargeable Mg-ion batteries (MIB) are considered as alternative to lithium-ion batteries. However, beside chevrel phase, none of conventional inorganic cathode materials demonstrate reversible intercalation/deintercalation of Mg+2 ions in anhydrous electrolyte system. The lack of high voltage and high-capacity cathode frustrates the realization of MIB. Previous studies indicated that vanadium pentoxide (V2O5) has potential to reversibly insert\extract Mg ions. However, many attempts to utilize V2O5 demonstrated limited electrochemical response, due to hindered Mg ion mobility in solid. Herein, we demonstrated a tailored approach to synthesize uniformly dispersed spherical V2O5 homogeneously coated with 2D VS2 through a facile in-situ chemical method and study the electrochemical activity in 0.2 M Mg(TFSI)2 + MgCl2 in DME electrolyte system and …

Show more

Dec 2023 • arXiv preprint arXiv:2312.10367

Covariant field lines: a geometrical approach to electrodynamics

Yaron Hadad, Ido Kaminer, Aharon Elitzur, Eliahu Cohen

This paper revisits the geometric foundations of electromagnetic theory, by studying Faraday's concept of field lines. We introduce "covariant electromagnetic field lines," a novel construct that extends traditional field line concepts to a covariant framework. Our work includes the derivation of a closed-form formula for the field line curvature in proximity to a moving electric charge, showcasing the curvature is always non-singular, including nearby a point charge. Our geometric framework leads to a geometric derivation of the Lorentz force equation and its first-order corrections, circumventing the challenges of self-force singularities and providing insights into the problem of radiation-reaction. This study not only provides a fresh geometric perspective on electromagnetic field lines but also opens avenues for future research in fields like quantum electrodynamics, gravitational field theory, and beyond.

Show more

Dec 2023 • Israel Journal of Chemistry 63 (12), e202400002, 2023

Advancing the Understanding of Surface Science through Nonlinear Optics and Electrochemistry

Adi Salomon, Malachi Noked, Menny Shalom

Surface characterization is essential for understanding chemical and electrochemical transformations occurring on surfaces or at interfaces. Battery electrode aging processes, biofilm growth, crystallization, and transport/signaling across cellular membranes are only a few examples of such phenomena. This special issue delves into applied electrochemistry and nonlinear optical techniques applicable to surface characterization.

Show more

Dec 2023 • EPL

Variance properties of the microwave absorption spectrum of an ensemble of nitrogen vacancy centers in diamond

RA Chelly, T Chang, I Holzman, T Cohen, J Kantorovitsch, M Stern

This work presents an original method based on the variance properties of the microwave absorption spectrum of an ensemble of nitrogen vacancy centers in diamond. The spectrum is measured optically. A compact and simple device is designed to optimize the photon collection. We conduct a quantitative comparison of the ensemble's optical signal in both the visible and near infrared range. Using the enhanced signal-to-noise ratio achieved through the device geometry we perform real-time DC magnetometry at moderate light and microwave powers. Under these conditions, the amplitude of a DC magnetic field can be extracted from the variance of the microwave absorption spectrum in a fast and reproducible manner, without the burden of complex fitting techniques.

Show more

Dec 2023 • Angewandte Chemie 135 (50), e202306904, 2023

Polyimide Compounds For Post‐Lithium Energy Storage Applications

Amey Nimkar, Gil Bergman, Elad Ballas, Nophar Tubul, Noam Levi, Fyodor Malchik, Idan Kukurayeve, Munseok S Chae, Daniel Sharon, Mikhael Levi, Netanel Shpigel, Guoxiu Wang, Doron Aurbach

The exploration of cathode and anode materials that enable reversible storage of mono and multivalent cations has driven extensive research on organic compounds. In this regard, polyimide (PI)‐based electrodes have emerged as a promising avenue for the development of post‐lithium energy storage systems. This review article provides a comprehensive summary of the syntheses, characterizations, and applications of PI compounds as electrode materials capable of hosting a wide range of cations. Furthermore, the review also delves into the advancements in PI based solid state batteries, PI‐based separators, current collectors, and their effectiveness as polymeric binders. By highlighting the key findings in these areas, this review aims at contributing to the understanding and advancement of PI‐based structures paving the way for the next generation of energy storage systems.

Show more

Dec 2023 • Molecular Cancer Therapeutics

Abstract C105: A systematic evaluation of the therapeutic potential of base editing in cancer prevention and treatment

Rona Merdler-Rabinowicz, Ariel Dadush, Sumeet Patiyal, Gulzar Daya, Lipika Ray, Padma Sheila Rajagopal, Alejandro A Schaffer, Eytan Ruppin, Erez Y Levanon

Base editing (BE) techniques offer efficient means to modify specific nucleotides in the genome. While current research mainly focuses on applying BE for treating genetic diseases caused by single-nucleotide variants (SNVs), its potential in cancer is worth exploring, as many tumors arise from an accumulation of various mutations. BE techniques primarily consist of a fusion between a Cas nuclease and a deaminase (Cas-BE), that enables A-to-G or C-to-T edits. This allows for the correction of G>A and T>C SNVs at the DNA or RNA level. Additionally, BE can correct C>T and A>G SNVs at the DNA level through the cellular DNA repair response. Precise targeting is aimed by a programmed guide RNA (gRNA), which engages in Watson-Crick base pairing with the desired region. However, a remaining concern is gRNA binding to additional locations in the genome, leading to unintended off-target edits. An …

Show more

Nov 2023 • arXiv preprint arXiv:2311.13915

First passage times in compact domains exhibits bi-scaling

Talia Baravi, Eli Barkai

The study of first passage times for diffusing particles reaching target states is foundational in various practical applications, including diffusion-controlled reactions. In this work, we present a bi-scaling theory for the probability density function of first passage times in confined compact processes, applicable to both Euclidean and Fractal domains, diverse geometries, and scenarios with or without external force fields, accommodating Markovian and semi-Markovian random walks. In large systems, first passage time statistics exhibit a bi-scaling behavior, challenging the use of a single time scale. Our theory employs two distinct scaling functions: one for short times, capturing initial dynamics in unbounded systems, and the other for long times is sensitive to finite size effects. The combined framework provides a complete expression for first passage time statistics across all time scales.

Show more

Nov 2023 • MDPI-Multidisciplinary Digital Publishing Institute, 2023

Catalytic Methods for the Synthesis of Carbon Nanodots and Their Applications

Indra Neel Pulidindi, Archana Deokar, Aharon Gedanken

The current endeavor of publishing a reprint on the astounding field of research on carbon dots has its roots in the launch of the Special Issue entitled" Catalytic methods for the synthesis of carbon nanodots and their applications”. Ever since this Special Issue was launched on 29th August 2022, it has attracted great attention from researchers worldwide. Grateful thanks are due to Dr. Nimala Kumar Jangid and coworkers from India; Dr. Syed Hadi Hasan and coworkers from India; Dr. Lerato L Mokoloko and coworkers from South Africa; Dr. Siti Kastom Kamarudin and coworkers from Malaysia; Dr. Selvaraj Roomani and coworkers from India; Dr. Ahmad Umar and coworkers from India, Saudi Arabia and USA; Dr. Ramon Moreno-Tost and coworkers from Spain; Dr. Jae Hong Kim and coworkers from South Korea and Japan; Dr. Yong RokLee and coworkers from India, South Korea and UAE; and Dr. Joydeep Das from …

Show more

Nov 2023 • Bulletin of the American Physical Society

Generating Correlated X-ray Pairs as a Low-Noise Low-Damage Probe

Nicholas Hartley, Daniel Hodge, Eric Christie, Arianna Gleason, Siegfried Glenzer, Aliaksei Halavanau, Abigail Mae Hardy, Colin Recker, Sean Sheehan, Sharon Shwartz, Michael Ware, Richard Sandberg, Gary Walker

PM10. 00002: Generating Correlated X-ray Pairs as a Low-Noise Low-Damage Probe*

Show more

Nov 2023 • Scientific Reports

Integration of high-resolution imaging through scattering medium into a disposable micro-endoscope via projection of 2D spots-array

Shimon Elkabetz, Oran Herman, Amihai Meiri, Asaf Shahmoon, Zeev Zalevsky

The objective of this research includes integration of high-resolution imaging through scattering medium, such as blood, into a disposable micro-endoscope. A fiber laser integrated into the micro-endoscope as part of its illumination channel, allows to project a tunable array of spots of light onto an object, that is located behind the scattering medium. We have a laser fiber as part of the illumination channel of a disposable micro-endoscope. By using proper optics, we convert the temporal modulation of the laser into spatial distribution. Thus, the result is generation of spatial spots when using a pulsed laser. The detection channel is a holographic recording of the collected back scattered light, that allows extraction of the electrical field. By time integrating the field we obtain the realization of the spatial array of illumination spots formed on top of the inspected object and behind the scattering medium. By changing the …

Show more

Nov 2023 • Journal of Electronic Imaging 32 (6), 060101-060101, 2023

JEI Updates Research Topic Categories

Zeev Zalevsky, Jenny Benois-Pineau, Laura Boucheron, Atanas Gotchev, Walter G Kropatsch, Alexander C Loui

Editor-in-Chief Zeev Zalevsky and the journal’s team of senior editors introduce an updated slate of research topic categories appropriate for JEI.

Show more

Nov 2023 • Ultrasonics Sonochemistry

Ultrasonic-assisted synthesis of lignin-capped Cu2O nanocomposite with antibiofilm properties

Moorthy Maruthapandi, Akanksha Gupta, Arumugam Saravanan, Gila Jacobi, Ehud Banin, John HT Luong, Aharon Gedanken

Under ultrasonication, cuprous oxide (Cu2O) microparticles (<5 µm) were fragmented into nanoparticles (NPs, ranging from 10 to 30 nm in diameter), and interacted strongly with alkali lignin (Mw= 10 kDa) to form a nanocomposite. The ultrasonic wave generates strong binding interaction between lignin and Cu2O. The L-Cu nanocomposite exhibited synergistic effects with enhanced antibiofilm activities against E. coli, multidrug-resistant (MDR) E. coli, S. aureus (SA), methicillin-resistant SA, and P. aeruginosa (PA). The lignin-Cu2O (L-Cu) nanocomposite also imparted notable eradication of such bacterial biofilms. Experimental evidence unraveled the destruction of bacterial cell walls by L-Cu, which interacted strongly with the bacterial membrane. After exposure to L-Cu, the bacterial cells lost the integrated structural morphology. The estimated MIC for biofilm inhibition for the five tested pathogens was 1 mg/mL L …

Show more

logo
Articali

Powered by Articali

TermsPrivacy