Spectroscopic characterization of buffer-gas-cooled lead monofluoride molecules in the BΣ(υ' = 0) ← XΠ(υ = 0) transition.

Establishing a nonzero measurement of the electron Electric Dipole Moment (eEDM) has long been a fundamental pursuit in atomic, molecular and optical physics, offering possible insights into new physics beyond the Standard Model. In this regard, lead monofluoride (PbF) has emerged as a potential candidate for measuring eEDM primarily due to its suitable properties such as the strong internal effective electric field, and eEDM-sensitive ground state with large Ω-doubling and small magnetic g factor. In the present work, we realized the production of a buffer-gas-cooled PbF molecular beam and characterized its high-resolution spectroscopy in the BΣ(υ'=0) ← XΠ(υ = 0) transition, including both direct absorption and laser-induced fluorescence spectroscopy.

Antibiotic SERS spectral analysis based on data augmentation and attention mechanism strategy.

The analysis of Raman spectrum data has gradually transitioned into the era of machine learning. However, it is still constrained by the challenge of acquiring large volumes of raw data and the issue of losing characteristic information from spectral data. In this paper, we propose a strategy that combines data amplification and attention mechanisms for analyzing antibiotic spectral data.

Deciphering the Impact of Aromatic Linkers in Self-Assembled Monolayers on the Performance of Monolithic Perovskite/Si Tandem Photovoltaic.

Aromatic linker-constructed self-assembled monolayers (Ar-SAMs) with enlarged dipole moment can modulate the work function of indium tin oxide (ITO), thereby improving hole extraction/transport efficiency. However, the specific role of the aromatic linkers between the polycyclic head and the anchoring groups of SAMs in determining the performance of perovskite solar cells (PSCs) remains unclear. In this study, we developed a series of phenothiazine-based Ar-SAMs to investigate how different aromatic linkers could affect molecular stacking, the regulation of substrate work function, and charge carrier dynamics.

Fluidic Oscillation-Based Pneumatic Actuation for Soft Locomotion and Grasping.

Most pneumatic actuators used in robotics are controlled by valves that contain moving parts (e.g., spool or rotor) and electronics to change the direction or pressure of the air flow.

Adjuvant osimertinib therapy guided by ctDNA-assessed MRD in resected EGFR-mutated stage IA-IIA non-small-cell lung cancer: a randomized clinical trial study protocol.

Aims: We investigate the value of postoperative minimal residual disease (MRD) detection using circulating tumor DNA (ctDNA) in guiding adjuvant therapy for patients with potentially high recurrence risk in non-small cell lung cancer (NSCLC) due to the presence of MRD.

Patients And Methods: A randomized controlled trial will enroll stage IA-IIA NSCLC patients with Epidermal Growth Factor Receptor (EGFR) mutation and negative resection margins to evaluate the clinical value of MRD in guiding adjuvant osimertinib. That is, if the patient's peripheral blood does not show ctDNA (negative) after next generation sequencing (NGS) testing, postoperative observation and follow-up are sufficient.

5-Hydroxytryptophan artificial synaptic vesicles across the blood-brain barrier for the rapid-acting treatment of depressive disorder.

Conventional antidepressants are slow to work and have serious side effects and poor response rates. As a precursor to 5-hydroxytryptamine (5-HT), 5-hydroxytryptophan (5-HTP) can be safely increased in concentration and rapidly metabolized into 5-HT in the brain, but the effectiveness of 5-HTP is severely limited due to its short half-life and lack of targeting. To traverse the blood-brain barrier (BBB) and achieve effective targeting, we designed a near-infrared (NIR) light-responsive artificial synaptic vesicles functionalized with an aptamer and loaded with 5-HTP and IR780.

Effect of Exogenous Glucose on Molecular Transport through Bacterial Membranes Studied by Second Harmonic Light Scattering.

Recent studies revealed that exogenous glucose increases the efficacy of aminoglycosides in eliminating bacterial persister cells. It was speculated that this increased antimicrobial efficacy is induced by glucose-facilitated uptake of the antibiotics. Here, we examine this hypothesis by using second-harmonic light scattering to time-resolve the transport of an antimicrobial quaternary ammonium compound (QAC), malachite green, across the membranes of living () in the presence of glucose.

Reactive Radical Etching of Quartz by Microwave Activated CH/H Plasmas Promotes Gas Phase Nanoparticle Formation.

An attenuation of visible probe radiation identified in earlier absorption studies of microwave plasma-activated CH/H/Ar gas mixtures is shown to arise from nanoparticles in under-pumped regions on opposing sides of a reactor used for diamond chemical vapor deposition. The present modeling studies highlight (i) ejection of Si-containing species into the gas phase by reactive radical etching of the quartz window through which the microwave radiation enters the reactor, enabled by suitably high window temperatures () and the synergistic action of near-window H atoms and CH radicals; (ii) subsequent processing of the ejected material, some of which are transported to and accumulate in stagnation regions in the entrance to the reactor side arms; and (iii) the importance of Si in facilitating homogeneous gas phase nucleation, clustering, and nanoparticle growth in these regions. The observed attenuation, its probe wavelength dependence, and its variations with changes in process conditions can all be rationalized by a combination of absorption and scattering contributions from Si/C/H containing nanoparticles with diameters in the range of 50-100 nm.

Interface gypsum deposition in flow-electrode CDI treating brackish water: Impacts and mechanisms.

Flow-electrode capacitive deionization (FCDI) is a promising electrically driven technology for brackish water desalination, but it suffers from scaling issues in the concentrate chamber when treating brackish water with high levels of SO and Ca. In addition, how the key components (e.g.

Evolutionary analysis of CBFs/DREB1s in temperate and tropical woody bamboos and functional study of PeDREB1A3 under cold and drought stress.

Bamboo forests are vulnerable to extreme cold, as well as drought caused by declining rainfall or persistent hot, under global climate change. The C-repeat binding factors/dehydration-responsive element binding protein 1s (CBFs/DREB1s) are vital to acquiring tolerance to deal with the changing climate in plants. Herein, we investigated the evolution of CBFs/DREB1s in four temperate or tropical woody bamboos.

A recombinant L-threonine aldolase with high catalytic efficiency for the asymmetric synthesis of L-threo-phenylserine and L-threo-4-fluorophenylserine.

Objectives: To develop robust variants of L-threonine aldolases (L-TAs), potent catalysts for synthesizing asymmetric β-hydroxy-α-amino acids, it is necessary to identify critical residues beyond the known active site residues.

Results: Through virtual screening, a neglected residue Asn305, was identified as critical for catalytic efficiency. Subsequent site-saturation mutagenesis led to a potent variant N305R which exhibited excellent conversions of 88% (87%) and 80% (94%) for the synthesis of L-threo-phenylserine and L-threo-4-fluorophenylserine respectively.

Characterization of a phage 4FS1 and its depolymerase.

The significant economic losses caused by in donkey husbandry have increased interest in exploring the potential of phages and their enzymes as control strategies. In this study, a phage, designated 4FS1, was isolated from sewage at a donkey farm. Transmission electron microscopy (TEM) revealed a typical icosahedral head and a long, non-contractile tail.

The coupling mechanism of farmland transfer and farmland mortgage: Taking the Jinshan District of Shanghai as an example.

Taking the mortgage loan mechanism of farmland management rights in Jinshan District of Shanghai as an example, we analyzed the coupling mechanism between farmland transfer and farmland mortgage according to a case analysis and system evolution theory. We explored the comparative advantages and inherent limitations. The results showed that the linkage between farmland transfer and farmland mortgage has a Pareto nature, which can achieve a two-way mutual promotion and spiral development of the coupling system.

Complete remission after pembrolizumab monotherapy in a non-small cell lung cancer patient with PD-L1 negative, high tumor mutational burden, and positive tumor-infiltrating lymphocytes: A case report.

Rationale: Immune checkpoint inhibitors have been used to treat cancer patients. Non-small cell lung cancer (NSCLC) patients with a high expression level of programmed cell death ligand-1 (PD-L1) could benefit from immune checkpoint inhibitor monotherapy. However, treating NSCLC patients with PD-L1 negative is still a clinical challenge.

A novel method to enhance the efficiency of aldehyde tanning agents via collagen amination.

The utilization of chromium free tanning agents generates lots of pollutants such as chromium containing wastewater and sludge. Besides, trivalent chromium may be converted into carcinogenic hexavalent chromium under certain conditions, causing permanent harm to the human body. Therefore, the promotion of chromium free tanning technology is extremely significant.

Ginkgetin enhances breast cancer radiotherapy sensitization by suppressing NRF2-HO-1 axis activity.

Breast cancer (BC) is a critical threat to women's lives. Radiotherapy (RT) is a pivotal treatment modality for BC, but the failure of RT due to radioresistance is still not well facilitated. Ginkgetin (GK) has a potent anti-tumor activity intimately associated with ferroptosis.

Dissociative triple ionization of argon dimers in elliptically polarized two-color laser fields.

Using ion-ion coincidence measurements, we experimentally investigate the dissociative triple ionization of argon dimers in relative phase controlled elliptically polarized two-color femtosecond laser fields. By examining the kinetic energy release-dependent momentum angular distribution of the ejected ionic fragments, two distinct pathways, each associated with different intermediates, are identified. Control over the emission directions of the ionic fragments is achieved by varying the relative phase of the elliptical two-color laser fields.

Mitoxantrone-Based Novel Conditioning Regimen Leads to Great Survival Benefit in Peripheral T-Cell Lymphoma Compared to BEAM Regimen.

Background: Peripheral T-cell lymphomas (PTCL) frequently result in relapsed or refractory diseases. Upfront autologous hematopoietic stem cell transplantation (ASCT) using the BEAM (carmustine, etoposide, cytarabine, and melphalan) regimen is recommended. However, relapses are common in PTCL, highlighting a critical need for improved survival outcomes in these patients.

Nanostructured FeO/Cu O heterojunction for enhanced solar redox flow battery performance.

Solar redox flow batteries (SRFB) have received much attention as an alternative integrated technology for simultaneous conversion and storage of solar energy. Yet, the photocatalytic efficiency of semiconductor-based single photoelectrodes, such as hematite, remains low due to the trade-off between fast electron hole recombination and insufficient light utilization, as well as inferior reaction kinetics at the solid/liquid interface. Herein, we present an α-FeO/Cu O p-n junction, coupled with a readily scalable nanostructure, that increases the electrochemically active sites and improves charge separation.

Investigating the photophysical properties of rhodamines using a spectroscopic single-molecule fluorescence method.

The photophysical properties of rhodamine molecules play a critical role in their performance across various applications. The spectroscopic single-molecule fluorescence (sSMF) technique overcomes the limitations of conventional SMF by distinguishing individual fluorophores based on their emission spectra. This enables precise measurement and direct comparison of photophysical properties among distinct molecules under identical conditions, without requiring separation of molecules.

A Review of Sensor-Based Interventions for Supporting Patient Adherence to Inhalation Therapy.

Purpose: This review aims to provide a comprehensive overview of sensor technologies employed in interventions to enhance patient adherence to inhalation therapy for chronic respiratory diseases, with a particular emphasis on human factors. Sensor-based interventions offer opportunities to improve adherence through monitoring and feedback; however, a deeper understanding of how these technologies interact with patients is essential.

Patients And Methods: We conducted a systematic review by searching online databases, including PubMed, Scopus, Web of Science, Science Direct, and ACM Digital Library, spanning the timeframe from January 2014 to December 2023.

Development and clinical utility of an ultra performance liquid chromatography - tandem mass spectrometry assay for monitoring omadacycline and tigecycline in severe bacterial infections.

Objective: We aimed to develop a rapid, simple, and precise ultra performance liquid chromatography - tandem mass spectrometry (UPLC-MS/MS) technique for simultaneous measurement of omadacycline (OMA) and tigecycline (TGC) in the bloodstream of individuals suffering from serious bacterial infections.

Methods: All analytes were extracted using a 0.2 % formic acid-water dilution and acetonitrile plasma protein precipitation.

Income level is associated with differences in primary and secondary stroke prevention in China.

Introduction: The aim of this study was to assess differences in the effects of income level on the primary and secondary prevention of stroke in the Chinese population.

Material And Methods: This was a population-based study using data from a China Kadoorie Biobank survey that began in 2004 in 10 geographical regions. Community residents ( = 512,715) aged 30-79 years were recruited.