bluuebunny/crossref_metadata_2025 huggingface dataset:
Synthesis of silver nanoparticles embedded into melamine polyaminal networks as antibacterial and anticancer active agents
Authors: Alotaibi Maha M. , Almalki Bodoor , Tashkandi Nada , Basingab Fatemah , Abdullah Samaa , Alkayal Nazeeha S.
Published: August 2024

Silver nanoparticles were successfully incorporated into a melamine-based polymer, resulting in the synthesis of (Ag NPs@Bipy-PAN) through a reverse double solvent approach. The synthesised Ag NPs@Bipy-PAN polymer underwent extensive characterisation through Powder X-ray Diffraction (PXRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy and Energy Dispersive X-ray (EDX) and Thermal Gravimetric Analysis. PXRD analysis confirmed the successful encapsulation of Ag nanoparticles and provided insights into the amorphous nature of the polymer following encapsulation. SEM and EDX analyses further corroborated the presence and distribution of Ag nanoparticles on the polymer surface. The biological efficacy of the Ag NPs@Bipy-PAN polymer was evaluated through antibacterial, anti-breast cancer, and biocompatibility assays. The results demonstrated notable antibacterial and anticancer activities, with significant efficacy against bacterial strains and breast cancer cells. Biocompatibility assessments indicated acceptable compatibility, particularly at a concentration of 2.5 mg/mL, compared to untreated control cells. These findings suggest that Ag NPs@Bipy-PAN has considerable potential as a candidate for cancer-targeted and antimicrobial drug delivery systems. The incorporation of silver nanoparticles into the melamine-based polymer enhances the safety profile of these systems in in vivo conditions, making them a viable option for advanced therapeutic applications.
Polymodal K+ channel modulation contributes to dual analgesic and anti-inflammatory actions of traditional botanical medicines
Authors: Manville Rían W. , Yoshimura Ryan F. , Yeromin Andriy V. , Hogenkamp Derk , van der Horst Jennifer , Zavala Angel , Chinedu Sonia , Arena Grey , Lasky Emma , Fisher Mark , Tracy Christopher R. , Othy Shivashankar , Jepps Thomas A. , Cahalan Michael D. , Abbott Geoffrey W.
Published: August 2024

Pain and inflammation contribute immeasurably to reduced quality of life, yet modern analgesic and anti-inflammatory therapeutics can cause dependence and side effects. Here, we screened 1444 plant extracts, prepared primarily from native species in California and the United States Virgin Islands, against two voltage-gated K+ channels - T-cell expressed Kv1.3 and nociceptive-neuron expressed Kv7.2/7.3. A subset of extracts both inhibits Kv1.3 and activates Kv7.2/7.3 at hyperpolarized potentials, effects predicted to be anti-inflammatory and analgesic, respectively. Among the top dual hits are witch hazel and fireweed; polymodal modulation of multiple K+ channel types by hydrolysable tannins contributes to their dual anti-inflammatory, analgesic actions. In silico docking and mutagenesis data suggest pore-proximal extracellular linker sequence divergence underlies opposite effects of hydrolysable tannins on different Kv1 isoforms. The findings provide molecular insights into the enduring, widespread medicinal use of witch hazel and fireweed and demonstrate a screening strategy for discovering dual anti-inflammatory, analgesic small molecules.
Assessment of transport phenomena in catalyst effectiveness for chemical polyolefin recycling
Authors: Jaydev Shibashish D. , Martín Antonio J. , Garcia David , Chikri Katia , Pérez-Ramírez Javier
Published: August 2024

Since the dawn of agitated brewing in the Paleolithic era, effective mixing has enabled efficient reactions. Emerging catalytic chemical polyolefin recycling processes present unique challenges, considering that the polymer melt has a viscosity three orders of magnitude higher than that of honey. The lack of protocols to achieve effective mixing may have resulted in suboptimal catalyst effectiveness. In this study, we have tackled the hydrogenolysis of commercial-grade high-density polyethylene and polypropylene to show how different stirring strategies can create differences of up to 85% and 40% in catalyst effectiveness and selectivity, respectively. The reaction develops near the H2–melt interface, with the extension of the interface and access to catalyst particles the main performance drivers. Leveraging computational fluid dynamics simulations, we have identified a power number of 15,000–40,000 to maximize the catalyst effectiveness factor and optimize stirring parameters. This temperature- and pressure-independent model holds across a viscosity range of 1–1,000 Pa s. Temperature gradients may quickly become relevant for reactor scale-up.
Towards early diagnosis and screening of Alzheimer’s disease using frequency locked whispering gallery mode microtoroids
Authors: Gin Adley , Nguyen Phuong-Diem , Serrano Geidy , Alexander Gene E. , Su Judith
Published: August 2024

Alzheimer’s disease (AD) is a form of dementia marked by amyloid plaques and neurofibrillary tangles in the brain. Amyloid beta (Aβ) is an AD biomarker which is linked to these plaques and tangles. Measuring Aβ levels can help with early AD diagnosis and aid in drug studies and delaying dementia. This is challenging, however, due to low AD biomarker levels in biofluids. Here we use FLOWER (frequency-locked optical whispering evanescent resonator) to quantify levels of post-mortem cerebrospinal fluid (CSF) Aβ42 in control, mild cognitive impairment (MCI), and AD participants. FLOWER measures the resonant wavelength shift of a microtoroid due to changes in the refractive index within its evanescent field. FLOWER can measure CSF Aβ42 (area under curve, AUC = 0.92) with higher performance than ELISA (AUC = 0.82) and can distinguish between control and MCI samples. This demonstrates FLOWER’s ability to screen CSF samples for diagnosis of AD.
Metal–Organic Framework-derived Bifunctional Electrocatalysts
Authors: Singha Debal Kanti , Ping Tapan , Nayak Biswajit , Purohit Smruti Vardhan , Kumar Jena Bikash
Published: August 2024

This chapter provides an introduction to the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) and discusses the fundamental aspects and their significance in different applications. Measurements of different electrochemical parameters needed for the measurement of the OER and ORR performance of a catalyst are considered. A novel class of advanced porous hybrid materials has emerged: metal–organic frameworks (MOFs) with variable pore sizes and large surface areas characterized by various periodic patterns. Because of their immense porosity and mechanical and thermal durability, they are used in a wide variety of applications. However, the low electrical conductivity and poor stability of MOFs make their use in electrocatalysis difficult. The benefits of using MOF-derived materials as bifunctional electrocatalysts for OER and ORR are discussed.
Nanoplasmonic biosensors for environmental sustainability and human health
Authors: Liu Wenpeng , Chung Kyungwha , Yu Subin , Lee Luke P.
Published: August 2024

This review examines recent developments in nanoplasmonic biosensors to identify analytes from the environment and human physiological parameters for monitoring sustainable global healthcare for humans, the environment, and the earth.
High ionic conductivity of a flexible solid-state composite electrolyte for a lithium-ion battery
Authors: Song Yu-Huei , Chen Yu-Ching , Lin En-Ci , Liang Tzu Yun , Wu Che Ya , Wang Ai-Yin , Chen Han-Yi , Wu Jyh Ming
Published: August 2024

A solid composite electrolyte (PLC SCE) with PEG/PEO/LATP/CNF enhances Li-ion conductivity (1.31 × 10−4 S cm−1 at 30 °C) and prevents dendrite growth. A symmetrical Li-ion battery with PLC SCE remains stable for 300 hours, even under stress.
Reversible change of luster color from pale yellow to wine red in microcrystalline film by photochromic diarylethene having a naphthyl group
Authors: Shiromae Ryotaro , Nakagawa Yuma , Watanabe Shota , Nishimura Ryo , Morimoto Masakazu , Yokojima Satoshi , Nakamura Shinichiro , Uchida Kingo
Published: August 2024

Microcrystalline film prepared by photochromic diarylethene having a naphthyl group can reversibly change its luster color from pale yellow to wine red upon irradiation with light of different wavelengths.
Simulation of the non-adiabatic dynamics of an enone-Lewis acid complex in an explicit solvent
Authors: Peschel Martin T. , Kussmann Jörg , Ochsenfeld Christian , de Vivie-Riedle Regina
Published: August 2024

Lewis acid catalysis is a promising tool in photochemistry. Thus, the ultrafast dynamics of a substrate-Lewis acid complex is investigated in silico, which reveals an intriguing dissociation–reassociation mechanism.
Elucidating gas–surface interactions relevant to atmospheric particle growth using combined temperature programmed desorption and temperature-dependent uptake
Authors: Johnson Kristen N. , Li Yixin , Ezell Michael J. , Lakey Pascale S. J. , Shiraiwa Manabu , Finlayson-Pitts Barbara J.
Published: August 2024

A new approach combines uptake and the temperature programmed desorption measurements to provide a molecular-level view of atmospheric particle growth. Adsorption/desorption on silica particles is discussed in terms of the gas structural features.
Study of the solvent-dependent crystal shape of theophylline using constant chemical potential molecular dynamics simulations
Authors: Neha  , Karmakar Tarak
Published: August 2024

Solvent-dependednt crystal shape of theophylline from constant chemical potential molecular dynamics simulations.
Cycloaddition of CO2 with epoxides into cyclic carbonates catalyzed by a binary organocatalyst under mild conditions
Authors: Yu Wen-Wang , Meng Xiang-Guang , Gan Zi-Yu , Li Wen , Zhang Yu-Lian , Zhou Jie
Published: August 2024

Highly efficient capture and conversion of CO2 into cyclic carbonates from flue gas under atmospheric pressure.
The evolution of Pt with different initial sizes during propane oxidation over Pt–CeO2 catalysts
Authors: Dong Jinshi , Huang Shijun , Li Shengtong , Chang Panpan , Yang Jiaqiang
Published: August 2024

Pt evolution different with different initial size during propane oxidation.
Atomistic observation and transient reordering of antisite Li/Fe defects toward sustainable LiFePO4
Authors: Guo Yaqing , Yao Yonggang , Guo Chi , Song Yaduo , Huang Pengjie , Liao Xiaobin , He Kun , Zhang Hao , Liu Hanwen , Hu Rong , Wang Wei , Li Cheng , Wang Shun , Nie Anmin , Yuan Yifei , Huang Yunhui
Published: August 2024

We introduce the atomistic observation and high-temperature shock to trigger Li–Fe reordering in LiFePO4, which offers a precise and efficient pathway for direct LiFePO4 recycling and regeneration, along with significant techno-economic benefits.
Integration of complementary split-ring resonators into digital microfluidics for manipulation and direct sensing of droplet composition
Authors: Aggarwal Dipesh , de Campos Richard Piffer Soares , Jemere Abebaw B. , Bergren Adam Johan , Pekas Nikola
Published: August 2024

Integrated sensing can be realized in a digital microfluidic (DMF) system not by adding components or materials to the DMF system, but by judiciously removing portions of the DMF ground plane to create microwave-resonant sensing structures.
Skin-interfaced microfluidic biosensors for colorimetric measurements of the concentrations of ketones in sweat
Authors: Wu Yunyun , Li Xinming , Madsen Kenneth E. , Zhang Haohui , Cho Soongwon , Song Ruihao , Nuxoll Ravi F. , Xiong Yirui , Liu Jiaqi , Feng Jingyuan , Yang Tianyu , Zhang Kaiqing , Aranyosi Alexander J. , Wright Donald E. , Ghaffari Roozbeh , Huang Yonggang , Nuzzo Ralph G. , Rogers John A.
Published: August 2024

Soft, skin-interfaced microfluidic colorimetric devices measure ketone concentration in sweat.
Entropy engineering in I–V–VI2 family: a paradigm to bestow enhanced average ZT in the entire operating temperature regime
Authors: Basu Ranita , Shenoy U. Sandhya , Pathak Ankita , Singh Shweta , Jha P. , Bhat D. Krishna , Basu Hirakendu , Singh Ajay
Published: August 2024

Highly symmetrical stabilized cubic structure in the operating temperature range of 300–800 K.
Synthesis of a thermoplastic elastomer from α-methylene-γ-butyrolactone for high temperature applications
Authors: Versteeg Friso G. , Pelras Théophile , Portale Giuseppe , Picchioni Francesco
Published: August 2024

Novel thermoplastic materials (partially biobased) can be conveniently prepared by co-polymerization of different monomers yielding a central soft block and two hard ones.
A new frontier towards the development of efficient SPEEK polymer membranes for PEM fuel cell applications: a review
Authors: Segale Mayetu , Seadira Tumelo , Sigwadi Rudzani , Mokrani Touhami , Summers Gabriel
Published: August 2024

SPEEK suffers from loss of conductivity at high temperatures and high methanol permeability. Modification of SPEEK using various materials will improve its properties.
Mechanochemical synthesis of fluorinated perovskites KCuF3 and KNiF3
Authors: Ceriotti Davide , Marziani Piergiorgio , Scesa Federico Maria , Collorà Arianna , Bianchi Claudia L. , Magagnin Luca , Sansotera Maurizio
Published: August 2024

The solvent-free mechanochemical syntheses of fluorinated perovskites KCuF3 and KNiF3 are presented as eco-friendly alternatives to the solvothermal processes. Green metrics are reported as assessment of the environmental impact of the two methods.
Ov-rich γ-MnO2 enhanced electrocatalytic three-electron oxygen reduction to hydroxyl radicals for sterilization in neutral media
Authors: Qin Yingnan , Han Tongzhu , Chen Ligang , Yan Kexin , Wang Jing , Wang Ning , Hou Baorong
Published: August 2024

The synergistic interaction between Ov and γ-MnO2 significantly enhanced the performance of the neutral 3e− ORR, exhibiting impressive sterilization capabilities.
Recent advances in the biosynthetic studies of bacterial organoarsenic natural products
Authors: Hoshino Shotaro , Onaka Hiroyasu , Abe Ikuro
Published: August 2024

We summarize recent research in the discovery and biosynthesis of bacterial organoarsenic natural products, providing unique chemical architecture and enzymologies.
Monolayer SnS2 Schottky barrier field effect transistors: effects of electrodes
Authors: Li Hong , Zhang Yunfeng , Liu Fengbin , Lu Jing
Published: August 2024

An ML SnS2 SBFET with an n-type Ohmic-contact 1T-NbTe2 electrode exhibits remarkably better performance than a device with a Schottky-contact 2H-NbTe2 electrode and can exceed the IRDS targets for both low-power and high-performance applications.
X-ray photoelectron spectroscopy of high-throughput mechanically exfoliated van der Waals materials
Authors: Jiménez-Arévalo Nuria , Mariani Carlo , Leardini Fabrice , Pandolfi Francesco , Rago Ilaria , Frisenda Riccardo
Published: August 2024

Quantitative elemental analysis of van der Waals materials can be done by XPS by using high-throughput mechanical exfoliations, which favour the coverage of large area substrates with flakes using minimal quantities of starting materials.
Facile access to S-aryl/alkyl dithiocarbamates via a three-component reaction under metal-free conditions
Authors: Xu Lin-Lin , Wang Si-Ran , Sun Jia-Qi , Zhang Ren-Jia , Tong Jun , Xu Da-Zhen
Published: August 2024

A K2CO3 promoted one-pot, environmentally friendly method for the synthesis of S-aryl/alkyl dithiocarbamates in an H2O–DMAc (3 : 1) mixed solvent has been developed.
Assembly of Si-substituted heteropolyoxotantalate architecture
Authors: Chen Hanhan , Xu Haojie , Ma Xinyi , Ma Pengtao , Wang Jingping , Niu Jingyang
Published: August 2024

Compound 1 is the first hetero-POTa containing Si element, and the largest hetero-POTa at present. The proton conductivity of 1 reaches 3.63 × 10−3 S cm−1 at 75 °C and 95% RH, which is comparable to the proton-conducting POMs reported.
A redox-active ligand combines a PCP pincer site with a bidentate N–N donor in opposition
Authors: Leong Derek W. , Shao Yanwu , Bhuvanesh Nattamai , Ozerov Oleg V.
Published: August 2024

A binucleating ligand (2) combining a monoanionic PCP pincer cleft with a monoanionic N–N cleft has been prepared on the basis of bis(imidazolyl)methane (1).
Amorphous heterojunction and fluoride-induced effects enable a F-Ni(OH)2/Ni–B electrocatalyst for efficient and stable alkaline freshwater/seawater hydrogen evolution at a high current density
Authors: Chen Shenyi , Chu Haoming , Xie Ziyin , Dong Lihui , Li Bin , Fan Minguang , He Huibing , Chen Zhengjun
Published: August 2024

F-doped Ni(OH)2/Ni–B with amorphous heterojunction and F-induced dual effects is prepared by a facile process for efficient and stable alkaline hydrogen evolution.
The N-biphenyldihydroisoquinolinium scaffold as a novel motif for selective fluorimetric detection of quadruplex DNA
Authors: Soost Denisa , Bringmann Gerhard , Ihmels Heiko
Published: August 2024

A cationic, donor–acceptor-substituted biphenyl derivative is presented as a quadruplex DNA-targeting fluorescent probe that enables the fluorimetric differentiation of quadruplex DNA forms.
Synthesis and applications of fluorinated, polyfluoroalkyl- and polyfluoroaryl-substituted 1,2,3-triazoles
Authors: Bugden Frances E. , Westwood Jason L. , Stone Henry , Xu Yingjian , Greenhalgh Mark
Published: August 2024

This review summarises methods to synthesise and apply fluorine- and polyfluoroalkyl/aryl-substituted 1,2,3-triazoles. Focus is devoted to recent examples and those where the properties of both the 1,2,3-triazole and fluorine groups are important.
Nickel/ligand loading-controlled divergent and selective coupling between redox-active methylenecyclopropanes and ArBr
Authors: Mao Ben , Zhang Xiao-Yu , Bi Xiu-Fen , Yang Xiao-Yin , Shi Min , Wei Yin
Published: August 2024

Diverse alkyne and dibenzylethylene derivatives were obtained via selective coupling of redox-active MCPs and ArBr under Ni/photoredox catalysis. The nickel/ligand loading tuning method played a crucial role in this divergent synthesis protocol.
Atom-economic metal free mediated difunctionalization of isocyanides with 3-methyleneoxindoles and 3-methylene-benzofuranones
Authors: Chen Lvli , Xiong Dong , Yang Zeyu , Chen Yuyao , Xiao Jian , Tian Yin , Zheng Jianfeng
Published: August 2024

We presented metal-free cascade reactions of isocyanides with 3-methyleneoxindoles and 3-methylenebenzofuranones via the cleavage of the chemically inert carbon–nitrogen bond or carbon–oxygen bond.
Universalized and robust length separation of carbon and boron nitride nanotubes with improved polymer depletion-based fractionation
Authors: Shapturenka Pavel , Barnes Benjamin K. , Mansfield Elisabeth , Noor Matthew M. , Fagan Jeffrey A.
Published: August 2024

An improved polymer depletion-based method for length separation enables robust fractionation of boron nitride and carbon nanotubes with consistent scaling.
Strong metal-support interactions of TiO2 interface-loaded Pt constructed under different atmospheres for adjusting the hydrogen storage reaction performance of N-ethylcarbazole
Authors: Hou Zhengjian , Wu Ke , Wei Huijie , Chi Hua , Xi Yanyan , Ma Lishuang , Lin Xufeng
Published: August 2024

Two types of Pt catalyst were prepared by treating commercial TiO2 supports in different atmospheres, followed by the adding Pt nanoparticles. They were applied to catalytic hydrogenation/dehydrogenation cycles of N-ethylcarbazole.
Structural, morphological, magnetic and electrical properties of La0.8Na0.2−x□xMnO3 (0.00 ≤ x ≤ 0.15) manganites
Authors: Wali M. , Hizi W. , Dhahri R. , Rahmouni H. , Khirouni K. , Dhahri E.
Published: August 2024

La0.8Na0.2−x□xMnO3 (0.00 ≤ x ≤ 0.15) manganites were successfully synthesized using the solid-state route.
Gold nanorod-based smart platform for efficient cellular uptake and combination therapy
Authors: Kim Kibeom , Chejara Mamta Ramgopal , Yoon Been , Park Myoung-Hwan
Published: August 2024

An amphiphilic polymer-coated GNR platform was studied for chemo- and photothermal combination therapy, promoting controlled drug release, and inducing cellular uptake by deforming the cell membrane under NIR light.
Bayesian-optimization-based design of highly active and stable Fe–Cu/SSZ-13 catalysts for the selective catalytic reduction of NOx with NH3
Authors: Lim Sanha , Lee Hwangho , Kim Hyun Sub , Shin Jun Seop , Lee Jong Min , Kim Do Heui
Published: August 2024

Bayesian optimization approach facilitates an efficient optimization of multi-components catalyst for NH3-SCR reaction.
Nanoconfined tandem three-phase photocatalysis for highly selective CO2 reduction to ethanol
Authors: Huo Hailing , Hu Ting , Zhong Zhiqing , Zhan Cheng , Huang Chengxi , Ju Qiang , Zhang Liang , Wu Fang , Kan Erjun , Li Ang
Published: August 2024

A 94.15% ethanol selectivity is achieved via a nanoconfined tandem three-phase CO2 photoreduction system, which integrates hydrophobicity and the nanoconfinement effect with tandem reactions, reducing the energy barrier for *CO–*CO coupling.
Polyethylene oxide-based solid-state polymer electrolyte hybridized with liquid catholyte for semi-solid-state rechargeable Mg–O2 batteries
Authors: Sarkar Ayan , Huang Shang-Yang , Rasupillai Dharmaraj Vasantan , Bazri Behrouz , Iputera Kevin , Su Hsiu-Hui , Chen Yi-An , Chen Han-Chen , Lin Yu-Ping , Chung Ren-Jei , Wei Da-Hua , Liu Ru-Shi
Published: August 2024

This work introduces a hybrid semi-solid electrolyte of PEO polymer and liquid catholyte, enhancing Mg–O2 battery performance by improving cathode-electrolyte interaction, anode protection, discharge capacity, and cycling efficiency.
Investigating synergistic cooperativity of metal-Brønsted acid site pair in MFI-type zeolites by synchrotron X-ray powder diffraction
Authors: Wun Ching Kit Tommy , Wang Zi , Kawaguchi Shogo , Kobayashi Shintaro , Wu Tai-Sing , Chen Tianxiang , Lin Cong , Tang Chiu C. , Yin Jun , Lo Tsz Woon Benedict
Published: August 2024

This study examines how the modulation of the metal-BAS pair in MFI zeolite affects the catalytic performance in two catalytic reactions. The impact of acid strengths on catalytic properties is analyzed using Rietveld refinement and DFT calculations.
Spontaneous assembly of a class of small molecule prodrugs directed by SN38
Authors: Tang Zhenhai , Lan Wenning , Wen Kaiying , Li Wenting , Wang Tao , Zhou Dongdong , Su Hao
Published: August 2024

Conjugating SN38 with small hydrophilic molecules via a biodegradable linker results in small molecule self-assembling prodrugs that form well-defined nanofibers with varying surface charges in water.
Imaging of ONOO− fluctuations during drug-induced liver/kidney injury in vitro and in vivo via a dicyanoisophorone-based NIR fluorescent probe with a large Stokes shift
Authors: Kong Fei , Liu Hengqing , Huang Jie , Qin Jingcan
Published: August 2024

Current clinical indicators for assessing liver/kidney injury are functional rather than injury indicators, which may cause some delays in the diagnosis of drug-induced liver injury (DILI) and kidney injury (DIKI).
Engineering hemin-loaded hyaluronan needle-like microparticles with photoprotective properties against UV-induced tissue damage
Authors: Alsharabasy Amir M. , Aljaabary Amal , Farràs Pau , Pandit Abhay
Published: August 2024

Hemin-loaded hyaluronan needle-like microparticles can protect against the UV-induced damage of dermal fibroblasts and the accompanied oxidative and nitrosative stress.
3D printing/electrospinning of a bilayered composite patch with antibacterial and antiadhesive properties for repairing abdominal wall defects
Authors: Hu Qingxi , Zhang Yu , Song Yongteng , Shi Hekai , Yang Dongchao , Zhang Haiguang , Gu Yan
Published: August 2024

Double-layer abdominal wall patch with antibacterial and anti-adhesive properties was prepared by combining biological materials and polymer materials in the composite forming process of bio-3D technology and electrospinning process.
Ionic organic terahertz crystals: a perspective on design and solid-state phonon absorption
Authors: Kwon O-Pil , Jazbinsek Mojca
Published: August 2024

This perspective discusses various design strategies for high-performance ionic organic nonlinear optical crystals, their solid-state molecular phonon vibrations, as well as their influence on THz optical properties and THz applications.
Temperature dependence of charge transport in molecular ensemble junctions
Authors: Sullivan Ryan P. , Morningstar John T. , Makala Manikanta , Welker Mark E. , Jurchescu Oana D.
Published: August 2024

This study investigates the temperature dependence of conductivity in molecular junctions under various biasing regimes, providing insights into charge transport mechanisms and their impact on device functionality.
Fabrication of a high performance memristor device by metallization of Ag+ inside a solution processed Li5AlO4 thin film
Authors: Pramanik Subarna , Chakraborty Rajarshi , Hazra Sobhan , Pandey Utkarsh , Pal Bhola Nath
Published: August 2024

A solution processed Ag-ion-exchanged Li5AlO4 thin film has been used to fabricate a high performance oxide memristor device with enhanced bistable switching and memory retention.
Voltage controlled polarity switching of photoresponse in graphene oxide-based memristor
Authors: Saha Soma , Datta Anindya , Kundu Tapanendu
Published: August 2024

Graphene oxide-based metal/insulator/metal device: a memristor exhibiting voltage-dependent polarity switching of photoresponse by precisely controlling the intensity of illumination.
High-performance multilevel nonvolatile organic field-effect transistor memory based on multilayer organic semiconductor heterostructures
Authors: Qian Yangzhou , Li Jiayu , Li Wen , Song Ziyi , Yu Hao , Feng Ziyi , Shi Wei , Huang Wei , Yi Mingdong
Published: August 2024

A multilevel organic field-effect transistor memory based on organic heterostructures is demonstrated. Benefiting from the charge trapping of the quantum well-like heterostructures, the memory exhibited multilevel nonvolatile memory properties.
A polymer rigidity probe based on ultralong organic room temperature phosphorescence of a new skeleton benzo[4,5]imidazo[1,2-a]pyridine
Authors: Ma Jiaxin , Bai Jingjuan , Han Lin , Zhang Xingda , Liu Yiran , Bu Lijuan , Li Zewei , Chen Mingxing , Ma Zhimin , Ma Zhiyong
Published: August 2024

We report a new backbone, BNPy. Copolymerizing MA and AA with BNPy derivatives extended UORTP to over 10 s. For BNPy-1, the τp is closely related to the trend of matrix Tg. Thus, BNPy-1 can be used as an efficient polymer rigidity (or Tg) probe.
An efficient and stable deep-blue oxygen-bridged triphenylborane-based fluorophore with hybridized local and charge-transfer states
Authors: Lv Jichen , Li Jie , Wang Shengnan , Shen Haoran , Xia Lifen , Liu Yuchao , Xue Shanfeng , Ma Dongge , Ying Shian , Yan Shouke
Published: August 2024

A multifunctional deep-blue HLCT fluorophore with remarkable performance was developed by incorporating a boron/oxygen-based multi-resonance skeleton.
A Scoping Review on the Intersection Between Voice and Swallowing Measures in Healthy and Disordered Populations
Authors: Mira Amna S. , Goldsberry Lindsey J. , Previtera Melissa J. , Simmons Amanda K. , McKenna Victoria S.
Published: August 2024

Purpose:

Voice and swallowing are distinct functions that share anatomical and physiological properties; however, research investigating their intersection is limited. The purpose of this scoping review was to explore the literature surrounding the relationship between voice and swallowing measures in healthy adults and those with non-degenerative disorders. Specifically, we aimed to elucidate whether objective voice measures could be used as correlates of swallowing function.

Method:

We systematically searched four databases (Embase, PubMed, CINAHL, and Web of Science) for relevant literature using a combination of key words and controlled vocabulary generated from the Yale Mesh Analyzer. The inclusion criteria consisted of peer-reviewed studies in the English language that reported on healthy adults and/or patients with non-degenerative neurological disorders and pulmonary diseases and contained instrumental and/or objective voice and swallowing measures. Two raters completed the abstract screening process followed by independent full-text reviews. Case studies, review studies, gray literature, or abstract-only studies were excluded.

Results:

Among 5,485 screened studies, 182 were fully reviewed, with only 11 studies meeting the inclusion criteria. Eight studies found an association between voice and swallowing objective measures, whereas the other three did not. Significant voice measures that were related to swallowing safety and/or physiology included maximum fundamental frequency (
F
0),
F
0 range, maximum phonation time, biomechanics of effortful pitch glides, and voice onset time.

Conclusions:

Although there was heterogeneity in the measures used, specific objective voice measures showed promise in clinical practice as a screening tool for dysphagia. Further investigations are needed to validate the clinical utility of these measures across diverse patient populations.
Addressing the Gap: A Pilot Study to Improve Graduate Students' Counseling Self-Efficacy Through Online Support Groups for Care Partners of People With Acquired Brain Injuries
Authors: Pagano George , Teytel-Cocozza Mayya , Moya-Galé Gemma
Published: August 2024

Purpose:

The purpose of this technical report is to (a) describe the development and pilot testing of a university training initiative for graduate students in speech-language pathology to conduct online support groups for care partners of individuals with acquired brain injuries and (b) share preliminary data on students' self-efficacy in their counseling skills as a result of training.

Method:

Four graduate students completed an intensive summer counseling training program consisting of two 90-min student orientations to counseling skills and two online support group sessions for care partners of people with acquired brain injuries. A mixed methods analysis of pilot data collected over the summer of 2023 was conducted. Students completed the modified Counselor Activity Self-Efficacy Scales for speech-language pathologists within 1 week of beginning their counseling training and within 1 week after their clinical training experience. Students also submitted a short reflection paper within 24 hr of their two support group sessions to discuss their overall performance within the session and assess their self-efficacy in their counseling skills.

Results:

Preliminary data evidenced significant pre- to posttraining gains in two primary counseling areas: (a) psychoeducation (i.e., students' ability to provide information to care partners) and (b) empathy when addressing care partners' concerns regarding their loved one's communication disorder. Students' reflection papers illustrated their sense of growth as clinicians and paralleled the findings from their questionnaires.

Conclusions:

Our preliminary results highlight the importance of providing counseling opportunities for student clinicians in speech-language pathology graduate programs. Our online clinical model offers an example for replicability across universities to foster self-efficacy in students' counseling skills as part of their graduate studies. “Key” ingredients are provided for replication when developing a student-led online support group program for care partners of individuals with acquired brain injuries.
Synthesis of carbonyl compounds dibenzo-18- crown-6 by the Grinard reaction
Authors: Kozinskaya Lyubov , Mirkhamitova Dilorom , Atakulova Nargiza , Juraev Vays , Kuchkarova Noila , Rifky Mohamed
Published: August 2024

In this article, Grignard reactions of 4´,4´´-diiododibenzo-18- crown-6 were carried out to obtain carbonyl compounds in an inert argon atmosphere. An aldehyde, 4´,4´´-diformyldiioddibenzo-18-crown-6, and a ketone, 4´,4´´-diacetyldibenzo-18-crown-6, were obtained. The reactivity and geometry of ethyl acetate, acetic anhydride, and acetic acid chloride molecules were analyzed, which was reflected in the difference in the yields of the target product: ester (22%) <anhydride (37%) <acid chloride (48%). It was determined that tertiary alcohols and various oxidation products are by-products of the reaction. A quantum-chemical calculation and comparison of the spectra of carbonyl compounds, diacetyldibenzo-18- crown-6 were performed. The obtained compounds were identified using 1H-13C-NMR and IR spectroscopy.
Monitoring of pathogens of carrot (Dausis Carota) rot during storage in the territory of the Russian Federation
Authors: Zakhodiakina Evgenia , Beloshapkina Olga , Starkov Andrey , Voinash Sergey , Vanzha Vladimir , Akhtyamova Leisan
Published: August 2024

A study was conducted to determine the spectrum of pathogens that cause carrot rot when stored in storage conditions on 70 samples from 20 regions of the Russian Federation. Wet chamber method, microscopy, culture and molecular (PCR analysis) methods were used to identify pathogens. The most often dominant pathogens on carrot roots in storage conditions in all regions were fungi of the genus Penicillium, Fusarium, Mucor, Aspergillus, Pythium, Alternaria; Botrytis cinerea, Sclerotinia sclerotiorum и Sclerotinia nivalis. As a result of a study of the effectiveness of LLC “Syngenta” chemical plant protection products against white rot in vitro Miravis®, SC (adepidyn 200 g/l) и Cidely Top, SL (diphenoconazole 125 g/l + cyflufenamide 15 g/l), it was concluded that the treatment based on adepidine has a biological efficacy equal to 100%, compared with the other -with a biological efficacy of 33.3%.
Einarbeitung in der Intensivmedizin
Authors: Josuttis David , Spieckermann Aileen , Henneberg Janina , Fischer Pia-Katariina , Beer Angelina , Riedel Sabine , Regner Frida , Peter Sophie , Koppelkamm Lilly , Albrecht Sindy , Klier Tobias , Bathel Adina , Renzewitz Leonie , Flügge Dennis , Hill Aileen , Hierundar Anke , Borgstedt Laura , Deffner Teresa , Deininger Matthias Manfred
Published: August 2024

In Anbetracht des zunehmenden Fachkräftemangels in der Intensivmedizin gilt es, umgehend Maßnahmen zu ergreifen, um auch zukünftig eine gute Versorgungsqualität sowie die Fokussierung der Behandlung auf Patient*innenwohl und -sicherheit gewährleisten zu können. Besondere Bedeutung erlangt hierbei die nachhaltige Gewinnung und Bindung qualifizierter Fachkräfte. Die Einarbeitung ist gemäß aktuellen Umfragen ein wichtiger Aspekt, den es in diesem Kontext zu verbessern gilt. Im vorliegenden Positionspapier zur „Einarbeitung in der Intensivmedizin“ werden daher Empfehlungen formuliert, die zu einer umfangreichen, strukturierten Einarbeitung und dadurch langfristig zu einer Verbesserung der Einarbeitung, Steigerung der Mitarbeitenden-Zufriedenheit, Versorgungsqualität und Fokussierung der Therapie auf das Patient*innenwohl und die Patient*innen-Sicherheit beitragen sollen. Das Papier entstand unter Leitung der Jungen DIVI, einer multidisziplinären und multiprofessionellen Initiative von jungen Fachkräften innerhalb der Deutschen Interdisziplinären Vereinigung für Intensiv- und Notfallmedizin e. V. (DIVI). Es wurde basierend auf einer systematischen Literaturrecherche sowie einer Konsensfindung aller beteiligten Berufsgruppen und Fachrichtungen erstellt und bietet erstmals einheitliche, konkrete Hinweise für die strukturierte Umsetzung der Einarbeitung verschiedener Berufsgruppen auf der Intensivstation.
Design of Synthetic Strategies towards Sulfur Containing Scaffolds
Authors: Kotha Sambasivarao , Khedkar Priti
Published: August 2024

The utilization of sulfur heterocycles in organic synthesis has attracted significant attention due to their wide-ranging applications. This review showcases the syntheses of diverse sulfur heterocycles embedded with amino acid derivatives, polycycles, spirocycles, cyclophanes, and other complex scaffolds. The reported methods extend beyond compound synthesis and highlight the use of different sulfur reagents for constructing sulfur heterocycles. This Review also discusses the utility of a variety of sulfur-containing starting materials for the generation of complex target molecules.

1 Introduction

2 Potassium Thioacetate

3 Thiazolidine-2,4-dione

4 Rhodanines

5 Sodium Sulfide

6 Thiotetronic Acid

7 Thiadiazoles

8 Thiophene

9 Rongalite

10 Sulfur Dioxide

11 Divinyl Sulfone

12 Sulfur Heterocycles Based on Boronic Acids

13 Miscellaneous

14 Summary
Distal Radius Osteotomies for Kienbock's Disease—A Minimally Invasive Approach
Authors: Bain Gregory I. , Vamsi Krishna Sathya , MacLean Simon
Published: August 2024

Background Negative ulnar variance is a recognized predisposing factor for Kienbock's disease (KD). Radial shortening osteotomy (RSO) reduces radial height, thereby alleviating stress on the lunate. Conversely, radial closed wedge osteotomy (RCWO) involves removing a distal radius wedge to not only decrease radial height but also reduce radial inclination, thereby enhancing lunate coverage.

Description This article outlines a straightforward and minimally invasive approach to RSO utilizing a single cut and stabilization with a single screw. Additionally, it introduces a technique for RCWO comprising two cuts, wedge removal from the distal radius, and fixation using a single headless screw.

Literature Review Traditionally, RSO and RCWO procedures include a volar approach consistent with distal radius fracture fixation techniques. However, the reliance on “free-hand” cuts may necessitate larger hardware for stabilization. Overcorrection poses risks of suboptimal outcomes and often mandates subsequent hardware removal procedures.

Clinical Relevance Both RSO and RCWO techniques offer minimally invasive solutions, which preserve the periosteum, and maintain stability. These techniques only require a single screw and a removable splint. RSO is indicated for KD wrists with negative ulnar variance, while RCWO is preferable for cases with negative ulnar variance and increased radial inclination.
External Validation of an Electronic Phenotyping Algorithm Detecting Attention to High Body Mass Index in Pediatric Primary Care
Authors: Barron Anya G. , Fenick Ada M. , Maciejewski Kaitlin R. , Turer Christy B. , Sharifi Mona
Published: August 2024

Objectives The lack of feasible and meaningful measures of clinicians' behavior hinders efforts to assess and improve obesity management in pediatric primary care. In this study, we examined the external validity of a novel algorithm, previously validated in a single geographic region, using structured electronic health record (EHR) data to identify phenotypes of clinicians' attention to elevated body mass index (BMI) and weight-related comorbidities.

Methods We extracted structured EHR data for 300 randomly selected 6- to 12-year-old children with elevated BMI seen for well-child visits from June 2018 to May 2019 at pediatric primary care practices affiliated with Yale. Using diagnosis codes, laboratory orders, referrals, and medications adapted from the original algorithm, we categorized encounters as having evidence of attention to BMI only, weight-related comorbidities only, or both BMI and comorbidities. We evaluated the algorithm's sensitivity and specificity for detecting any attention to BMI and/or comorbidities using chart review as the reference standard.

Results The adapted algorithm yielded a sensitivity of 79.2% and specificity of 94.0% for identifying any attention to high BMI/comorbidities in clinical documentation. Of 86 encounters labeled as “no attention” by the algorithm, 83% had evidence of attention in free-text components of the progress note. The likelihood of classification as “any attention” by both chart review and the algorithm varied by BMI category and by clinician type (p < 0.001).

Conclusion The electronic phenotyping algorithm had high specificity for detecting attention to high BMI and/or comorbidities in structured EHR inputs. The algorithm's performance may be improved by incorporating unstructured data from clinical notes.
Perception of Pitch and Duration Pattern of Vowel /a/: A Comparison across Age and Gender in 5 to 9 Years Old Children
Authors: Neupane Anuj Kumar , Vanaja C.S.
Published: August 2024

Objectives The present study aimed to develop pitch pattern test (PPT) and duration pattern test (DPT) using vowel and investigate the temporal ordering skills among typically developing children aged 5 to 9 years across genders. The study compared the performance of children on these tests across different age groups and gender. The study also investigated the relationship between performance on the DPT and PPT tasks using the vowel /a/.

Materials and Methods Two verbal stimuli tests, DPT and PPT, were developed. For DPT, the vowel /a/ was used at 246 Hz and had two different durations of 500 and 250 ms for long and short stimuli, respectively, with a 300-ms interstimulus interval. For PPT, the vowel /a/ was used at 220 Hz for “low” stimuli and 261 Hz for “high” stimuli, both lasting 500 ms, with a 300-ms interstimulus duration and a 6-second intersequence duration.

A cross-sectional study design was utilized in the study. A total of 100 typically developing school children aged between 5 and 9 years were divided into five age groups, each consisting of 10 males and 10 females. All children passed a hearing screening at 25 dB HL from 250 Hz to 4,000 Hz and had an average or above-average academic performance as reported by their teacher. All the children were tested using the developed tests. The order of administration of DPT and PPT was randomized. Children were instructed to listen to the sequence of vowel presentations and hum them in the same order.

Results There was no significant difference between scores of males and females across all the age groups. On both tests, there was a significant improvement in the performance of the children with increase in age. There was a strong overall correlation between scores of DPT and PPT.

Conclusion Both DPT and PPT, utilizing vowels as stimuli, did not exhibit a ceiling effect. This study highlighted a robust correlation between the two tests.
Fantasies of cultural sovereignty and national unity: Russia?s ontological (in)security and its assertion of ?spiritual-moral values??
Authors: Prina Federica
Published: August 2024

Drawing on ontological security studies and Lacanian theory, the article examines the role of ?spiritual-moral values? (SMV) in Russian politics. It argues that SMV have been employed by the Russian political elite to construct an (illusory) sense of ontological security, presented as attainable via the promotion of sovereignty and national unity. Through the analysis of policy documents and Vladimir Putin?s speeches for the period 2012?2023, the article outlines three interlocking narratives: (a) Russian cultural norms are under attack; (b) attacks can be resisted through cultural sovereignty, with SMV playing a crucial role; and (c) the Russian population is united through the same SMV. These narratives (?fantasies? in the Lacanian sense) create promises destined to remain unfulfilled: cultural sovereignty is based on the unrealistic belief that culture can remain unaltered, while existing policies fragment society, causing the ontological insecurity of ethnic and sexual minorities, but also the Russian population more widely.
Ab initio extended Hubbard model of short polyenes for efficient quantum computing
Authors: Yoshida Yuichiro , Takemori Nayuta , Mizukami Wataru
Published: August 2024

We propose introducing an extended Hubbard Hamiltonian derived via the ab initio downfolding method, which was originally formulated for periodic materials, toward efficient quantum computing of molecular electronic structure calculations. By utilizing this method, the first-principles Hamiltonian of chemical systems can be coarse-grained by eliminating the electronic degrees of freedom in higher energy space and reducing the number of terms of electron repulsion integral from O(N4) to O(N2). Our approach is validated numerically on the vertical excitation energies and excitation characters of ethylene, butadiene, and hexatriene. The dynamical electron correlation is incorporated within the framework of the constrained random phase approximation in advance of quantum computations, and the constructed models capture the trend of experimental and high-level quantum chemical calculation results. As expected, the L1-norm of the fermion-to-qubit mapped model Hamiltonians is significantly lower than that of conventional ab initio Hamiltonians, suggesting improved scalability of quantum computing. Those numerical outcomes and the results of the simulation of excited-state sampling demonstrate that the ab initio extended Hubbard Hamiltonian may hold significant potential for quantum chemical calculations using quantum computers.
Numerical simulation of Alfvén dark envelope soliton in Hall-MHD plasmas
Authors: Li Zhong-Zheng , Gao Dong-Ning , Wang Fang-Ping , Duan Wen-Shan
Published: August 2024

This study investigates the propagation of dark Alfvén solitons in low-β magnetized plasma using Hall-magnetohydrodynamic (Hall-MHD) numerical simulations. The rational solution of the nonlinear Schrödinger equation (NLSE) is presented, which is proposed as an effective tool for studying dark envelope solitons in plasma. Our results show a high degree of agreement between numerical simulations and analytical solutions derived from the NLSE via the reductive perturbation method. This agreement validates our modeling and computational approach. In addition, the simulations confirm the existence of dark Alfvén solitons in magnetized plasma. This work demonstrates the effectiveness of Hall-MHD simulations in studying complex plasma phenomena, contributing to the broader understanding of soliton propagation in plasma environments.
Berry curvature induced anomalous Hall effect in Pt2MnGa
Authors: Kakati Bhargab , Saha Payal , Alom Sadikul , Sahariah Munima B.
Published: August 2024

The intrinsic anomalous Hall effect in ferromagnetic materials depends on the spin–orbit-coupling-induced effect in the electronic structure. The presence of anomalous Hall effect can be realized from the existence of the finite Berry curvature. Since the Heusler material Pt2MnGa is ferromagnetic in its collinear state and no report on its transport properties has yet been made, the anomalous Hall effect in this system is investigated using a combined approach of the density functional theory and maximally localized Wannier function. Analysis of the Berry curvature reveals positive and negative peaks along the high symmetry k-points. These peaks together lead to a significant negative anomalous Hall conductivity, which makes the material a promising candidate for applications in spintronics.
Purinina
Authors: Booth Christina
Published: August 2024

Can Purinina survive without her mother?

Will she survive the challenges of the Tasmanian wilderness?

Follow the lives of the purinina (Tasmanian devils) and discover the issues facing this iconic species. With captivating illustrations and lyrical text, this new rendition brings the award-winning story of Purinina: A Devil’s Tale to a new generation.

You can even learn how to speak 'purinina'!

Reading level varies from child to child, but we recommend this book for ages 5 to 9.
Magnetic and electronic properties of double perovskite Sr2CrMoO6 for spintronic applications: insights from first-principles and Monte Carlo approaches
Authors: Kerrai H , Zaim N , Kerouad M , Zaim A
Published: August 2024

In this work, we studied the electronic and magnetic properties of the double perovskite Sr2CrMoO6 using ab initio calculations with generalized gradient approximation (GGA) and Monte Carlo (MC) simulations. The compound has two magnetic sublattices: one occupied by Mo5+ with spin (

S
=

1

2

) and the other by Cr3+ with spin (

σ
=

3

2

). The results showed half-metallic behavior with a total magnetic moment of 2.0 μ

B
. Using Monte Carlo simulations, we investigated the phase transitions and observed interesting phenomena such as a critical endpoint and both second-order and first-order phase transitions. Additionally, the results revealed compensation points for specific values of the crystal field.