Molecular Junction Polyoxotungstate-based Copper-Organic Frameworks for Photocatalytic Cross-Dehydrogenative Coupling.

The cross-dehydrogenative coupling (CDC) of tertiary amines and terminal alkynes is a vital catalysis step in the manufacture of C─C bonds. The traditional thermal catalysis, utilizing noble metal salts or toxic solvents, generally results in relatively low atom economy or unmet sustainable development prospect. The challenge of the CDC reactions lies in the simultaneous activation of C─H bonds in terminal alkynes and formation of free radical activation of tertiary amines to achieve the C─C coupling, which calls for novel catalytic techniques and powerful catalysts.

Equivalent method for calculating internal blast loads in cylindrical lattice shell structure.

It is crucial to improve the calculation efficiency of internal blast loads of a long-span spatial steel structure. This study develops an equivalent model for such loads using a one-way inclined single-layer cylindrical lattice shell structure as a case study. First, ANSYS/LS-DYNA was used to simulate free-air blasts and benchmark against experimental data, with peak overpressure errors below 8%, confirming the modeling approach and material parameters.

Study on the correlation between insomnia degree and quality of life in psychiatric outpatients in Chifeng city.

Background: Insomnia is a common sleep disorder that negatively impacts quality of life and is frequently comorbid with depression and anxiety. Chronic insomnia affects approximately 15% of the global population, with higher prevalence among females and the elderly. While existing research suggests a bidirectional relationship between insomnia and emotional disorders, the specific impact of insomnia severity on depression, anxiety, and quality of life remains unclear.

Neurological Mechanisms Exploration and Therapeutic Targets in Segmental Vitiligo Accompanied by White Hair.

Vitiligo is the most common skin depigmentation disease, affecting 0.1%-2% of people in the world. 3.

Ecofriendly and biocompatible biochars derived from waste-branches for direct and efficient solid-phase extraction of benzodiazepines in crude urine sample prior to LC-MS/MS.

Biochars (BCs) derived from waste-branches of apple tree, grape tree, and oak were developed for direct solid-phase extraction (SPE) of five benzodiazepines (BZDs) in crude urine samples prior to liquid chromatography-tandem mass spectrometry (LC-MS/MS) determination. Scanning electron microscopy, elemental analyzer, X-ray diffractometry, N adsorption/desorption experiments, and Fourier transform infrared spectrometry characterizations revealed the existence of their mesoporous structure and numerous oxygen-containing functional groups. The obtained BCs not only possessed high affinity towards BZDs via π-π and hydrogen bond interactions, but also afforded the great biocompatibility of excluding interfering components from undiluted urine samples when using SPE adsorbents.

Siccanin-related drimane meroterpenoids: biological activities and synthesis.

Covering: 1962 to 2023Drimane (hydro)quinones biosynthetically arise from the combination of drimane-type terpenoids with phenols or equivalents. Since the isolation of siccanin in 1962 (structure identified in 1967), over 200 natural drimane (hydro)quinones have been reported. They are widespread with remarkably diverse architectures and biological functions, which are achieved by varying either the drimane subunit, hydroquinone segment, or the fusion types of drimane and hydroquinone segment both of them.

The clinical and immunological features of alopecia areata following SARS-CoV-2 infection or COVID-19 vaccines.

Introduction: Alopecia areata (AA) is an autoimmune disease induced by viral infection or vaccination. With the increased incidence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the incidence of AA has also increased. Recently the incidence was found to be 7.

A novel iterative detection method based on a lattice reduction-aided algorithm for MIMO OFDM systems.

The lattice reduction-aided algorithm has received broad attention from researchers since it operates as a maximum likelihood receiver with better system performance for multiple-input multiple-output orthogonal frequency division multiplexing systems and contains a full diversity. A novel iterative detection algorithm canceling parallel iterations that employ the lattice reduction-aided approach is proposed. Soft information is exchanged through the detector itself.

Smartphone-Enabled Fluorescence and Colorimetric Platform for the On-Site Detection of Hg and Cl Based on the Au/Cu/TiC Nanosheets.

Smartphone-assisted fluorescence and colorimetric methods for the on-site detection of Hg and Cl were established based on the oxidase-like activity of the Au-Hg alloy on the surface of Au/Cu/TiC NSs. The Au nanoparticles (NPs) were constructed via in-situ growth on the surface of Cu/TiC NSs and characterized by different characterization techniques. After the addition of Hg, the formation of Hg-Au alloys could promote the oxidization of o-phenylenediamine (OPD) to generate a new fluorescence emission peak of 2,3-diaminopenazine (ADP) at 570 nm.

ErbB2-upregulated HK1 and HK2 promote breast cancer cell proliferation, migration and invasion.

ErbB2 is overexpressed in 15-20% of breast cancer, which is associated with malignancy and poor prognosis. We previously reported that ErbB2 supports malignant progression of breast cancer by upregulating lactate dehydrogenase A (LDHA), an important enzyme in glycolysis. However, whether ErbB2 promotes breast cancer progression through other glycolytic enzymes remains unclear.

Natural products-based: Synthesis and antifungal activity evaluation of novel L-pyroglutamic acid analogues.

Botanical pesticides are one of the sources of third-generation pesticides, which have received much attention at home and abroad in recent years due to their degradable and pollution-free advantages in nature. This article explored a concise approach toward synthesizing a series of novel L-pyroglutamic acid analogues from L-hydroxyproline. Furthermore, bioassay studies of these sulfonyl ester derivatives against , , , , and showed moderate antifungal activity.

Upregulation of SCD1 by ErbB2 via LDHA promotes breast cancer cell migration and invasion.

The incidence of breast cancer ranks at the top of female malignant tumors in China. Metastasis remains the main cause of death among breast cancer patients. The overexpression of ErbB2 is closely related to the metastasis and poor prognosis of breast cancer patients.

Visible-to-UVC driven upconversion photocatalyst sterilization efficiency and mechanisms of β-NaYF: Pr, Li@BiOCl with a core-shell structure.

UVC (wavelength < 280 nm) has a wide range of applications in the field of water disinfection due to its excellent bactericidal performance. In this work, we synthesized an upconversion luminescent material, β-NaYF: Pr, Li (NYF), which can generate UVC, and compounded it with a BiOCl photocatalyst to synthesize β-NaYF: Pr, Li@BiOCl (NYF-Bi) with a core-shell structure. The NYF-Bi composite material can be driven under visible light and has high photocatalytic activity.

First-Principle Insight Into the Effects of Oxygen Vacancies on the Electronic, Photocatalytic, and Optical Properties of Monoclinic BiVO(001).

In this paper, first-principle calculations were performed to investigate the effects of oxygen (O) vacancies (Ovac) on the crystal structure, electronic distribution, adsorption energies of O and HO and the density of states (DOS) of monoclinic bismuth vanadate (m-BiVO). Ovac were stable when incorporated into m-BiVO(001) and increased the adsorption energy of O. Ovac changed the V3d orbitals of m-BiVO(001) by adding a new band gap level, causing the redundant electrons of V atoms to become carriers and promoting the separation efficiency of electrons and holes.

Platelet Distribution Width at First Day of Hospital Admission in Patients with Hemorrhagic Fever with Renal Syndrome Caused by Hantaan Virus May Predict Disease Severity and Critical Patients' Survival.

Thrombocytopenia is one of the main characteristics of hemorrhagic fever with renal syndrome (HFRS). This study aimed to evaluate the associations of platelet distribution width (PDW) with the disease severity and critical patients' survival of HFRS. The demographics, clinical data, and white blood cell and platelet parameters including PDW in 260 patients hospitalized for HFRS were analyzed.

Association of red blood cell distribution width with severity of hepatitis B virus-related liver diseases.

Background: Red blood cell distribution width (RDW) has been indicated to be an inflammatory indicator in a variety of diseases. However, no consistent conclusions regarding it's relevance to hepatitis B virus (HBV) -related liver diseases have been made. This meta-analysis was conducted to assess the significance of RDW in HBV-related liver diseases.

Non-Aqueous Primary Li-Air Flow Battery and Optimization of its Cathode through Experiment and Modeling.

A primary Li-air battery has been developed with a flowing Li-ion free ionic liquid as the recyclable electrolyte, boosting power capability by promoting superoxide diffusion and enhancing discharge capacity through separately stored discharge products. Experimental and computational tools are used to analyze the cathode properties, leading to a set of parameters that improve the discharge current density of the non-aqueous Li-air flow battery. The structure and configuration of the cathode gas diffusion layers (GDLs) are systematically modified by using different levels of hot pressing and the presence or absence of a microporous layer (MPL).