Impact of straw return on greenhouse gas emissions from maize fields in China: meta-analysis.

Introduction: An increase in the amount of greenhouse gases (GHGs) in the atmosphere causes global warming, and >14% of all GHG emissions come from agricultural activities. The three primary atmospheric GHGs are CO, CH, and NO; therefore, regulating GHG emissions from agroecosystems is important for global climate management. Straw return is an environmentally friendly agricultural practice that positively affects crop production and soil fertility.

The spatial impact of population semi-urbanization on sulfur dioxide emissions: Empirical evidence from China.

Population semi-urbanization has become a significant feature in the process of urbanization in some countries, especially China. Although the impact of population and urbanization on the ecological environment was thoroughly studied, the role of the semi-urbanized population needs further discussion. This research studies the spatial effect of population semi-urbanization on sulfur dioxide (SO) emissions through provincial data from China.

Adherence and influencing factors of high-flow nasal cannula humidified oxygen therapy in elderly patients with stable chronic obstructive pulmonary disease: A meta-analysis.

Objective: The objective of the study was to systematically evaluate and perform a meta-analysis on the adherence to high-flow nasal cannula (HFNC) humidified oxygen therapy and its influencing factors in elderly patients with stable chronic obstructive pulmonary disease (COPD).

Methods: Relevant literature on HFNC and COPD was retrieved from PubMed, EMbase, Web of Science, and Cochrane Library databases. Cross-sectional studies, case-control studies, and cohort studies were included.

Nonnegligible transition risks towards net-zero economy: Lessons from green finance initiatives in China.

Owing to critical policy significance, a growing body of literature has been predominantly concentrating on the social welfare benefits brought by green finance (GF) initiatives. However, there is a paucity of research that quantifies the economic costs of GF initiatives on carbon reduction, raising the increasing concerns about the irreconcilable climate-economy trade-offs. To end this, the present study systematically investigates the influence of GF initiatives on the carbon-related marginal abatement cost (MAC) using two competing hypotheses: regulatory versus technical effects.

Unpacking the green potential: How does supply chain digitalization affect corporate carbon emissions? - Evidence from supply chain innovation and application pilots in China.

The impact of supply chain digitalization (SCD) on carbon dioxide emissions is an emerging area of research, particularly in China, which is the world's largest carbon emitter. This study uses micro-level data on listed companies from 2010 to 2021 to systematically verify the impact and mechanism of SCD on corporate carbon emissions (CCE) through the difference-in-differences model. We determined that SCD can significantly reduce CCE and its implementation path involves three aspects: promoting technological innovation, reducing financing constraints, and increasing market attention.

Tuning structures and catalysis performance of two-dimensional covalent organic frameworks based on copper phthalocyanine building block and phenyl connector.

Based on the experimentally reported stable and conductive two-dimensional covalent organic frameworks with copper phthalocyanine (CuPc) as building block and cyan substituted phenyl as connector (CuCOF-CN) as an electrocatalyst for CO reduction reaction (RR), first principle calculations were performed on CuCOF-CN and its analog with the CN being replaced by H (CuCOF). Comparatively studied on the crystal structures, electronic properties, and CORR performance of the two catalysts found that CuCOF has reduced crystal unit size, more positive charge on Cu and CuPc segments, smaller band gap, and lower reaction barrier for CO RR than CuCOF-CN. CuCOF is proposed to be good potential electrocatalyst with good environment friendliness.

Detection and Characterization of the Metabolites of Ciwujianoside B in Rats Based on UPLC-Fusion Lumos Orbitrap Mass Spectrometry.

We previously conducted a systematic study on the metabolic process and products of hederasaponin B in rats. We hypothesized that the sugar chain structures play a key role in the metabolism of triterpenoid saponins. To verify this hypothesis, we conducted metabolic research on ciwujianoside B ascribed to the same sugar chains and a distinct aglycone and compared it with hederasaponin B.

A review of the pharmacological action and mechanism of natural plant polysaccharides in depression.

Depression is a prevalent mental disorder. However, clinical treatment options primarily based on chemical drugs have demonstrated varying degrees of adverse reactions and drug resistance, including somnolence, nausea, and cognitive impairment. Therefore, the development of novel antidepressant medications that effectively reduce suffering and side effects has become a prominent area of research.

Safety profile of 0.0015% tafluprost eye drops in China: a post-marketing observational study.

Aim: To investigate the treatment pattern and safety of tafluprost for glaucoma and ocular hypertension (OH) in clinical practice in China.

Methods: This post-marketing observational study included patients who received tafluprost to lower intraocular pressure (IOP) within 30d between September 2017 and March 2020 in 20 hospitals in China. Adverse drug reactions (ADRs) during tafluprost treatment and within 30d after the treatment were collected.

Collaborative hydrothermal and calcination fabrication of ZnOS heterostructures for visible-light-driven H production.

Photocatalytic water splitting is forecasted as a promising strategy for H production. In this work, novel zinc oxide/zinc sulfide (ZnOS-) ( = 1, 2, 3 and 4) heterostructures were fabricated by a collaborative hydrothermal and calcination method with different amounts of trithiocyanuric acid. The formation of ZnOS- heterostructures was confirmed by PXRD, XPS, and HRTEM.

Salidroside Promotes Sensitization to Doxorubicin in Human Cancer Cells by Affecting the PI3K/Akt/HIF Signal Pathway and Inhibiting the Expression of Tumor-Resistance-Related Proteins.

Salidroside (Sal), the major active constituent of L., is considered as a potential pro-drug with various activities; however, its role in tumor therapy is not clear. Here, we demonstrated and that Sal enhanced the inhibitory activity of doxorubicin (DOX) in drug-resistant cancer cell lines.

Highly dispersed and stabilized CoO/C anchored on porous biochar for bisphenol A degradation by sulfate radical advanced oxidation process.

Cobalt oxide and porous carbon materials are desirable catalysts for peroxymonosulfate (PMS) advanced oxidation reaction in the degradation of organic pollutants. Herein, carbon-coated CoO (CoO/C) mounted biochar (BC) composites (CoO/C-BC) with a three-dimensional spongy-like network were constructed by driving a dual-precursors of zeolitic imidazolate framework (ZIF-67) and Eichhornia crassipes. Considering the unique structures and compositions, the CoO/C-BC composites enhanced the dispersion of CoO/C nanoparticles, minimized the Co leaching, mediated the size of CoO/C nanoparticles, and enhanced the overall catalytic activity.

Structural characterization of the metabolites of orally ingested hederasaponin B, a natural saponin that is isolated from Acanthopanax senticosus leaves by liquid chromatography-mass spectrometry.

Plant saponins are important natural product with biologically active. However, the metabolism of these compounds has rarely been studied due to their low bioavailability and the complexity of their metabolite structures. In this study, ultra-performance liquid chromatography/Fusion Lumos Orbitrap mass spectrometry was used to analyze the metabolites of hederasaponin B in vivo, and its possible metabolic pathways were proposed.

PLG inhibits Hippo signaling pathway through SRC in the hepatitis B virus-induced hepatocellular-carcinoma progression.

Purpose: Hepatitis B virus (HBV) infection is one main cause of hepatocellular carcinoma (HCC), but the mechanisms of pathogenesis still remain unclear.

Methods: We screened the 1351 differentially expressed genes related to HBV-induced HCC by bioinformatics analysis from databases and found that Plasminogen (PLG) may be a key gene in HBV-induced HCC progression. Then, we used a series of experiments and to explore the roles of PLG in HBV-HCC progression, such as qRT-PCR, western blot, ELISA, flow cytometry and TUNEL assay, subcutaneous xenografts and histopathological analysis to reveal the underlying mechanisms.

Multifunctional Textiles/Metal-Organic Frameworks Composites for Efficient Ultraviolet Radiation Blocking and Noise Reduction.

Ultraviolet radiation (UVR) and noise are the ubiquitous environmental hazards with considerable detrimental effects on the physiological and psychological health of humans. Exploiting efficient protective materials that can be extensively used in daily life for simultaneous anti-UVR and noise mitigation will be of crucial importance, but it is still a significant challenge in materials design. Herein, we developed a series of protective textiles for efficient anti-UVR and noise reduction MOFs nanocrystal-modified cotton textiles.

Impact Behavior of Hydrophilic Micron Particles on a Planar Gas-Liquid Interface.

The behavior of hydrophilic micron particles impacting on the gas-liquid interface has been further experimentally studied using a high-speed camera at different surface tensions and dynamic viscosities of liquids. The results show that the impact behavior exhibits suspension and submergence modes, whose boundary cannot be clearly identified because the overlap between the impact velocity ranges occurs because of the unstable pinning of the three-phase contact line on the surface of hydrophilic particles. The liquid properties have little effect on the wettability of hydrophilic particles but greatly influence the hydrodynamic and capillary force exerted on the particles, leading to the expansion of the suspension mode range.

Nanoscale Zero-Valent Iron and Chitosan Functionalized Biochar for Efficient Hexavalent Chromium Removal.

Sorption is widely used for the removal of toxic heavy metals such as hexavalent chromium (Cr(VI)) from aqueous solutions. Green sorbents prepared from biomass are attractive, because they leverage the value of waste biomass and reduce the overall cost of water treatment. In this study, we fabricated biochar (BC) adsorbent from the biomass of water hyacinth (), an invasive species in many river channels.

Monitoring fragmentation and oligomerization of a di-μ-methoxo bridged copper(ii) complex: structure, mass spectrometry, magnetism and DFT studies.

Analyses of the structural information of molecular fragments from the mass spectra of the solid-state products and their reaction solutions allow for the understanding of their formation and of their diverse properties. The reaction of CuCl and (1-methyl-1H-benzo[d]imidazole-2-yl)methanol (HL) led only to crystals containing molecular dimers of [Cu(L)Cl] (Cu2). The Cu-Cu distance and Cu-OR-Cu angle in the structure are 3.

Rapid screening and characterization of triterpene saponins in Acanthopanax senticosus leaves via untargeted MS and SWATH techniques on a quadrupole time of flight mass spectrometry.

This paper focused on untargeted MS, also called MS, and sequential window acquisition of all theoretical fragment-ion spectra (SWATH) fragmentations for comprehensive structural characterization of triterpene saponins (TSs) in leaves of Acanthopanax senticosus through ultra-high performance liquid chromatography electrospray quadrupole time-of-flight mass spectrometry (UPLC-ESI-QTOF). [M+H], [M + NH] and [M + Na] precursor ions and the corresponding fragment ions were collected simultaneously in energy-resolved MS. SWATH fragmentation was applied as a comparable and complementary method for resolving co-eluting species.

[Comparison on fungal molecular ecological networks of agricultural soils with different latitudes in the black soil region of Northeast China].

To investigate the differences of fungal network structures and interaction among fungal species of in black soil region of Northeast China, Illumina MiSeq sequencing was used to reveal the fungal communities in the three long-term fertilization experimental fields. Fungal molecular ecological networks were constructed based on random matrix theory (RMT). The results demonstrated that Ascomycota, Basidiomycota and Zygomycota were the dominant phyla and Hypocreales, Pleosporales and Sordariales were the dominant order, but the relative abundance of some dominant taxa significantly varied in different locations.

Positive PCNA and Ki-67 Expression in the Testis Correlates with Spermatogenesis Dysfunction in Fluoride-Treated Rats.

The present study aimed to evaluate the effect of fluoride (F) on spermatogenesis in male rats. F at 50 and 100 mg/L was administered for 70 days, after which the testicular and epididymis tissues were collected to observe the histopathological structure under a light microscope. The ultrastructure of the testis and sperm was also examined via transmission electron microscopy.

Manipulating Clusters by Use of Competing N,O-Chelating Ligands: A Combined Crystallographic, Mass Spectrometric, and DFT Study.

Two heptanuclear discs, [Co (L1) (CH O) ] (Co -L1) and [Co (L2) ](ClO ) (Co -L2), have been prepared by the reaction of [Co(H O) ](ClO ) with Schiff base HL1 (HL1=2-methoxy-6-[(methylimino)methyl]phenolate) or benzimidazole derivative HL2 (HL2=(1H-benzo[d]imidazol-2-yl)methanolate), respectively, at room temperature. In contrast, the reaction of [Co(H O) ](ClO ) with a mixture of the two ligands, having similar coordination ability but different shapes, resulted in the butterfly-structured tetranuclear cobalt cluster [Co (L1) (L2) ](ClO ) ⋅2H O (Co ). Electrospray ionization mass spectrometry (ESI-MS) analysis in real time revealed the {Co }→{Co }→{Co }→{Co } stepwise assembly when a single ligand was employed, but when both ligands were used only {Co } was obtained, an intermediate of the former reactions.

Sensitized near infrared emission through supramolecular d → f energy transfer within an ionic Ru(ii)-Er(iii) pair.

The newly synthesized ionic triple salt Ru-Er, {[Ru(bpy)(dbim)][Er(hfac)][CFCOO]·HO} (bpy = 2,2'-bipyridine; hfac = hexafluoroacetylacetonate; dbim = 2,2'-dibenzimidazole) exhibits near-infrared (NIR) emission at 1535 nm by intermolecular Ru → Er (d → f) energy transfer across supramolecular interactions when pumped within the Ru(ii) MLCT band. It is the first such observation for a transition metal-lanthanide ionic pair.

Ligand Effect on the Single-Molecule Magnetism of Tetranuclear Co(II) Cubane.

A clear dependence on the ligand has been observed for the magnetic properties of a closely related series of Co(II) cubane structures, viz. [Co(mbm or bm)(ROH)Br] (1-MeOH, 1-EtOH, 2-MeOH, and 2-EtOH, where 1 = [Co(mbm)Br], 2 = [Co(bm)Br], bm = (1H-benzo[d]imidazol-2-yl)methanolate. and mbm = 1-Me-bm.