Highly enhanced room-temperature single-atom catalysis of two-dimensional organic-inorganic multiferroics Cr(half-fluoropyrazine) for CO oxidation.

In modern chemistry, the development of highly efficient room-temperature catalysts is of great significance and remains a long-standing challenge in various typical reactions. Here, we theoretically demonstrate that the two-dimensional (2D) multiferroic, Cr(half-fluoropyrazine) [Cr(h-fpyz)], is a promising single-atom catalyst (SAC) operating at room temperature for CO oxidation. The rate-limiting barrier is merely 0.

Elevated serum cholesterol levels during pregnancy as predictors for postpartum hypercholesterolemia: A prospective cohort study.

Objective: To identify the associations between gestational cholesterol levels and the risk of postpartum hypercholesterolemia, and to establish trimester-specific reference values.

Methods: Serum lipids at gestational weeks 6-8, 16, 24, and 36, and 42 days postpartum were derived from 905 pregnant women of a prospective cohort. The major outcome was postpartum hypercholesterolemia.

Assessing the Efficacy of an External Insulation Fixed Kit in Maintaining Optimal Temperature for Hot Compress Therapy.

Background: Hot compress therapy is commonly used for various musculoskeletal conditions, aiming to alleviate pain and improve blood circulation. However, maintaining the desired temperature throughout the treatment session can be challenging.

Objective: This study aims to investigate the impact of an external insulation fixed kit on maintaining the optimal temperature during hot compress therapy.

Reliability and Validity of a Theory-Based Determinants of Eating and Physical Activity Behaviors Questionnaire for Chinese Elementary School Children.

Objective: The primary objective of this study was to develop and validate a Social Cognitive Theory-based instrument to identify psychosocial factors that influence diet and physical activity among Chinese children aged 10-12 years.

Design: This is a cross-sectional study, with data collected from questionnaires.

Setting: Two elementary schools in Beijing, China.

Interface Modulation for the Heterointegration of Diamond on Si.

Along with the increasing integration density and decreased feature size of current semiconductor technology, heterointegration of the Si-based devices with diamond has acted as a promising strategy to relieve the existing heat dissipation problem. As one of the heterointegration methods, the microwave plasma chemical vapor deposition (MPCVD) method is utilized to synthesize large-scale diamond films on a Si substrate, while distinct structures appear at the Si-diamond interface. Investigation of the formation mechanisms and modulation strategies of the interface is crucial to optimize the heat dissipation behaviors.

Dosage-effect of selenium supplementation on blood glucose and oxidative stress in type 2 diabetes mellitus and normal mice.

Background: The effectiveness of selenium (Se) supplementation on glycemic control is disparate.

Objective: This study aims to evaluate the effects of different dosages of Se diets on the blood glucose in type 2 diabetes mellitus (T2DM, db/db) and normal (db/m) mice.

Methods: The db/db and db/m mice were fed with different dosages of Se supplemented diets (0, 0.

Nuclear Binding Protein 2/Nesfatin-1 Affects Trophoblast Cell Fusion during Placental Development via the EGFR-PLCG1-CAMK4 Pathway.

Previous studies have shown that nuclear binding protein 2 () is expressed in the human placenta and increases with an increase in the syncytialization of trophoblast cells. This study aimed to investigate the role of in the differentiation and fusion of trophectoderm cells. In this study, the expression levels of and E-cadherin in the placentas of rats at different gestation stages were investigated.

27-Hydroxycholesterol inhibits trophoblast fusion during placenta development by activating PI3K/AKT/mTOR signaling pathway.

Trophoblast cell syncytialization is essential for placental and fetal development. Abnormal trophoblast cell fusion leads to pregnancy pathologies, such as preeclampsia (PE), intrauterine growth restriction (IUGR), and miscarriage. 27-hydroxycholesterol (27-OHC) is the most abundant oxysterol in human peripheral blood synthesized by sterol 27-hydroxylase (CYP27A1) and is considered a critical mediator between hypercholesterolemia and a variety of related disorders.

Oat β-glucan supplementation pre- and during pregnancy alleviates fetal intestinal immunity development damaged by gestational diabetes in rats.

Oat β-glucan (OG) has been shown to improve intestinal microecology in gestational diabetes mellitus (GDM), but the effect on fetal intestine health is unknown. Herein, we aimed to investigate the effects of OG supplementation during gestation in GDM dams on fetal intestinal immune development. OG was supplemented one week before mating until the end of the experiment.

Association of maternal HDL2-c concentration in the first trimester and the risk of large for gestational age birth.

Background: Maternal lipid levels during pregnancy are critical for fetal development. Recent studies revealed that high-density lipoprotein cholesterol (HDL-c) levels during pregnancy were negatively correlated with birthweight. High-density lipoprotein 2 cholesterol (HDL2-c) is one of the major subclasses of HDL-c, and its relationship with birthweight is unclear.

Nobiletin Inhibits Hypoxia-Induced Placental Damage via Modulating P53 Signaling Pathway.

In this study, we aimed to evaluate the effect of Nobiletin (NOB) on the placenta of Sprague-Dawley (SD) rats that had undergone reduced uterine perfusion pressure (RUPP) surgery and to evaluate the safety of NOB intervention during pregnancy. The results showed that NOB alleviated placental hypoxia, attenuated placental cell apoptosis, and inhibited placental damage in RUPP rats. No side effect of NOB intervention during pregnancy was observed.

Synergetic Charge Transfer and Spin Selection in CO Oxidation at Neighboring Magnetic Single-Atom Catalyst Sites.

Deciphering the precise physical mechanism of interaction between an adsorbed species and a reactive site in heterogeneous catalysis is crucial for predictive design of highly efficient catalysts. Here, using first-principles calculations we identify that the two-dimensional ferromagnetic metal organic framework of MnCH can serve as a highly efficient single-atom catalyst for spin-triplet O activation and CO oxidation. The underlying mechanism is via "concerted charge-spin catalysis", involving a delicate synergetic process of charge transfer, provided by the hosting Mn atom, and spin selection, preserved through active participation of its nearest neighboring Mn atoms for the crucial step of O activation.

Changes in serum TG levels during pregnancy and their association with postpartum hypertriglyceridemia: a population-based prospective cohort study.

Background: Blood lipid increases during gestation are considered a physiological adaption, and decrease after delivery. However, some adverse pregnancy outcomes are thought to be related to gestational lipid levels. Therefore, it is necessary to have a reference range for lipid changes during gestation.

Highly efficient catalytic properties of Sc and Fe single atoms stabilized on a honeycomb borophene/Al(111) heterostructure via a dual charge transfer effect.

Theoretical design and experimental fabrication of highly efficient single-atom catalysts (SACs) containing isolated metal atoms monodispersed on appropriate substrates have surged to the forefront of heterogeneous catalysis in recent years. Nevertheless, the instability of SACs, i.e.

Inter-chain double-site synergistic photocatalytic hydrogen evolution in robust cuprous coordination polymers.

Here, we evaluate photocatalytic H generation of three stable Cu-based coordination polymers (CPs), where each two-coordinated Cu(i) is stabilized in interchain -[Cu-imidazole(R)-Cu]- units. Importantly, a record-high H evolution rate of 57.64 mmol g h is identified for Cu-MIM.

Strain Engineering of a Defect-Free, Single-Layer MoS Substrate for Highly Efficient Single-Atom Catalysis of CO Oxidation.

Single-atom catalysts (SACs) are of great scientific and technical importance due to their low cost, high site density, and high specificity to enhance chemical reactions. Nevertheless, a major issue that severely limits the practical exploration of SACs is their instability, i.e.