72 results match your criteria: "Daqing Normal University[Affiliation]"

The top-level design of oxygen reduction and evolution reaction (ORR/OER) bifunctional electrocatalyst materials with intrinsic activity and high site exposure is considered to be the most promising strategy to solve the problems of sluggish kinetics and unsatisfactory cycling durability faced by clean and renewable energy conversion systems. Herein, a directional strategy of bonding-strengthening to obtain a flexurally stable Fe-S-Ni bridge bond with high intrinsic activity by axial bonding of sulfur atoms introducing into hexa-coordinating FeNi dual sites (Fe-S-Ni-NC) at the atom design level to further enhance the asymmetry of the site and boost reversible ORR/OER bifunctional activity in pH-universal electrolytes with a lower potential gap of 0.66 V and higher turnover frequency, which is superior to the benchmark catalyst (Pt/C for ORR and RuO for OER).

View Article and Find Full Text PDF

In the realm of emotion recognition, understanding the intricate relationships between emotions and their underlying causes remains a significant challenge. This paper presents MultiCauseNet, a novel framework designed to effectively extract emotion-cause pairs by leveraging multimodal data, including text, audio, and video. The proposed approach integrates advanced multimodal feature extraction techniques with attention mechanisms to enhance the understanding of emotional contexts.

View Article and Find Full Text PDF

Metacommunity theory and its application in community ecology of nematodes.

Ying Yong Sheng Tai Xue Bao

May 2025

State Environmental Protection Key Laboratory of Wetland Eco-logy and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun 130117, China.

The mechanism underlying community assembly is a core content in the fields of biogeography and community ecology. Understanding community assembly is of great significance for biodiversity conservation. The theory of metacommunity incorporates spatial dynamics into community ecology, elucidating how ecological processes drive community construction at local and regional scales.

View Article and Find Full Text PDF

Gun-Bullet Model-Based Noncovalent Interactions Boosting Visible Light Photocatalytic Hydrogen Production in Poly Thieno[3,2-b]Thiophene/Graphitic Carbon Nitride Heterojunctions.

Polymers (Basel)

May 2025

Engineering Research Center for Hemp and Product in Cold Region of Ministry of Education, School of Light Industry and Textile, Qiqihar University, Qiqihar 161006, China.

Linear conjugated polymer photocatalysts are still hampered by challenges involving low charge separation efficiency and poor water dispersibility, which are crucial factors during the photocatalytic water splitting process. Herein, we synthesized Poly thieno[3,2-b]thiophene (PTT) nanoparticles with excellent visible light response characteristic. Subsequently, we constructed the gun-bullet model PTT/graphitic carbon nitride (PTT/g-CN) heterojunctions for photocatalytic hydrogen production, where PTT with good visible light response characteristic serves as the bullets and g-CN with good water dispersibility serves as the guns.

View Article and Find Full Text PDF

Objective: This study aims to compare the efficacy of different mind-body exercises (MBEs) on cardiometabolic risk factors in patients with type 2 diabetes mellitus (T2DM) using a network meta-analysis of randomized controlled trials (RCTs).

Methods: This study followed PRISMA guidelines and was registered in PROSPERO (CRD42025630741). A systematic search of PubMed, Cochrane Library, Web of Science, and Embase was conducted up to December 15, 2024, using MeSH terms related to mind-body therapies and cardiometabolic risk in type 2 diabetes.

View Article and Find Full Text PDF

Genome-wide identification of the AAAP gene family and expression analysis under tissue-specific expression in five legumes.

BMC Genomics

February 2025

Heilongjiang Provincial Key Laboratory of Oilfield Applied Chemistry and Technology, Daqing, China.

Amino acid/auxin permease (AAAP) is a transcription factor with a highly conserved amino acid region that regulates physiological processes and development in many plants and responds to various abiotic stresses. In this study, a genome-wide analysis of five legumes (Phaseolus vulgaris, Medicago truncatula, Lotus japonicus, Glycine max, and Cicer arietinum) identified 74, 106, 87, 147, and 70 AAAP genes, respectively. In addition, chromosomal localisation, phylogenesis, conserved motifs, gene structure, and gene replication analyses were performed on AAAP genes.

View Article and Find Full Text PDF

The adsorption behavior at the air/water interface of saturated cardanol nonionic surfactants through molecular dynamic simulations.

J Mol Model

February 2025

Provincial Key Laboratory of Oil & Gas Chemical Technology, Chemistry and Chemical Engineering College, Northeast Petroleum University, Daqing, 163318, Heilongjiang, China.

Context: Cardanol surfactants exhibit significant development potential owing to their advantages of abundant availability, low cost, and environmental sustainability. In this study, a series of saturated cardanol nonionic surfactants were designed. The structure-activity relationships of these surfactants with varying lengths and positions of PO and EO chains were investigated from three perspectives: surface activity, adsorption morphology, and molecular bonding forces.

View Article and Find Full Text PDF

Preparation of a Silicon/MXene Composite Electrode by a High-Pressure Forming Method and Its Application in Li-Ion Storage.

Molecules

January 2025

Key Laboratory of Functional Materials Physics and Chemistry, Ministry of Education, College of Physics, Jilin Normal University, Changchun 130103, China.

The main component of high-capacity silicon-based electrodes is silicon powder, which necessitates intricate processing to minimize volume growth and powder separation while guaranteeing the ideal Si content. This work uses the an situ high-pressure forming approach to create an MXene/-Si/MXene composite electrode, where MXene refers to TiCT, and -Si denotes two-phase mixed nano-Si particles. The sandwich shape promotes silicon's volume growth and stops active particles from spreading.

View Article and Find Full Text PDF

Transcriptome Reveals the Differential Regulation of Sugar Metabolism to Saline-Alkali Stress in Different Resistant Oats.

Genes (Basel)

January 2025

Heilongjiang Provincial Key Laboratory of Oilfield Applied Chemistry and Technology, Daqing 163712, China.

Background: Saline-alkali stress is a major factor limiting the growth of oats. Sugar is the primary carbon and energy source in plants which regulates plant development and growth by regulating enzyme activity and gene expression. Sucrose, glucose, and fructose are ubiquitous plant-soluble sugars that act as signalling molecules in the transcriptional regulation of various metabolic and defence-related genes.

View Article and Find Full Text PDF

Role of the Polymer in the Emulsion Stability of an Amphoteric Polyacrylamide in Different Flooding Systems.

ACS Omega

November 2024

Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing 163318, Heilongjiang, China.

Polymers with high viscosity and good viscosity-temperature property have attracted attention as chemical agents for enhanced oil recovery. The role of polymers in the emulsifying stability of an amphoteric polyacrylamide (TSPAM) with good viscosity-temperature property in different flooding systems was investigated by means of a new emulsion stability model and molecular simulations. The results indicated that TSPAM exhibited superior emulsion stability compared to hydrolyzed polyacrylamide (HPAM).

View Article and Find Full Text PDF

Degradation of Rhodamine B by Visible Light Driven MoO@TiO Core-Shell Photocatalyst.

Langmuir

November 2024

Heilongjiang Provincial Key Laboratory of Oilfield Applied Chemistry and Technology, School of Chemical Engineering, Daqing Normal University, Daqing 163712, P. R. China.

In this study, a MoO@TiO composite core-shell material was developed to remove Rhodamine B (RhB) dye through synergistic adsorption and photocatalytic degradation. n-n heterostructures were formed by coupling n-type semiconductors to enhance the efficiency of photocarrier separation and photocatalytic performance. MoO, which possesses strong adsorption capacity, was primarily used as a dye adsorbent.

View Article and Find Full Text PDF

Given the suboptimal emulsification performance and the potential for secondary pollution posed by existing demulsifiers, a facile and highly efficient fluorinated magnetic demulsifier (FeN@F) was synthesized a one-step approach using fluorinated polyether and iron nitride as raw materials.The morphology and structure of the demulsifier were characterized using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and X-ray photoelectron spectroscopy (XPS). The results confirm a successful fluoropolyether coating on the surface of iron nitride.

View Article and Find Full Text PDF
Article Synopsis
  • Sandy conglomerate reservoirs are gaining attention for unconventional energy solutions to boost reserves and production.
  • The polymer/surfactant composite flooding system addresses challenges in water flooding, promoting better oil recovery by reducing water cutoff in wells.
  • Research emphasizes the need to analyze the adsorption behavior of system components within sandy conglomerates, highlighting their microstructure, mineral composition, and factors affecting viscosity for optimized production processes.
View Article and Find Full Text PDF

Genome-Wide Survey of the Potential Function of CrLBDs in MIA Biosynthesis.

Genes (Basel)

August 2024

College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China.

(. ) can produce over 150 types of monoterpenoid indole alkaloids (MIAs), including vinblastine and vincristine, which are currently the primary sources of these alkaloids. Exploring the complex regulatory mechanisms of .

View Article and Find Full Text PDF
Article Synopsis
  • Epoxy resin is popular for its excellent properties, but its flammability limits its use in fire-sensitive applications. A new composite (DAP@SiO) was developed to enhance its flame retardancy by incorporating diammonium hydrogen phosphate and silica.
  • The DAP@SiO helps improve the thermal stability and fire resistance of epoxy resin by releasing non-flammable gases during decomposition and forming a protective silica layer that enhances the material's structural integrity.
  • With 12% DAP@SiO, the composite meets UL-94 V-0 flame retardancy and shows improved mechanical properties, reducing heat release and smoke during combustion, demonstrating effective flame retardant performance.
View Article and Find Full Text PDF

This paper aims to address the issue of environmental pollution resulting from marine oil spills by evaluating the oil adsorption performance of commonly used fence materials. Conventional oil adsorption materials exhibit limited rates and capacities for oil adsorption. Existing methods have proven insufficient in meeting the requirements for efficient and rapid oil-water separation.

View Article and Find Full Text PDF
Article Synopsis
  • The study focuses on the challenge of breaking emulsification in aging oil with high water content during tertiary oil recovery.
  • Various experiments are conducted using ultrasonic reforming to analyze how different transducer input powers affect water content and the properties of oil samples before and after treatment.
  • Results indicate that ultrasonic cavitation effectively demulsifies and dehydrates aging oil, achieving a dehydration rate of up to 98.24%, while also causing changes in droplet distribution and suggesting ultrasound's potential for reversible demulsification.
View Article and Find Full Text PDF

During the development of a sand-conglomerate reservoir, there is a huge variation in rock grain size and different åmineral compositions of different-sized sand grains. The mineral composition and microstructure of the rock both have an impact on the characteristics of the remaining oil in the reservoir. The stripping mechanism of a surfactant system on sand-conglomerate surface crude oil with varied grain size minerals was explored in this paper.

View Article and Find Full Text PDF

Excellent coagulation performance of polysilicate aluminum ferric for treating oily wastewater from Daqing gasfield: Responses to polymer properties and coagulation mechanism.

J Environ Manage

April 2024

Hei Long Jiang Provincial Key Laboratory of Oilfield Applied Chemistry and Technology, School of Chemical Engineering, Daqing Normal University, Daqing 163412, China.

Article Synopsis
  • - The study synthesized polyethylene aluminum ferric (PSAF) for treating oily wastewater from the Daqing gas field using polysilicic acid and aluminum/iron chlorides, while analyzing preparation factors like polymerization and coagulation efficiencies.
  • - Key findings revealed that the ideal introduction timing for aluminum and iron is 100 minutes after starting the polymerization, with optimal conditions of SiO mass fraction at 2.5% and pH at 4.5, leading to a stable polymer with a storage life of up to 32 days.
  • - PSAF demonstrated remarkable performance in treating oily wastewater, achieving a turbidity removal efficiency of 99.5% and oil removal efficiency of 88.6% at a
View Article and Find Full Text PDF

Establishment of an Efficient Genetic Transformation System in .

J Fungi (Basel)

February 2024

Department of Food Engineering, Harbin University, Zhongxing Road 109, Nangang District, Harbin 150086, China.

(1) Background: , a valuable medicinal fungus, has limited studies on its gene function due to the lack of a genetic transformation system. (2) Methods: This study aimed to establish an efficient -mediated transformation (ATMT) system for This study involved cloning the promoter (glyceraldehyde-3-phosphate dehydrogenase, ) of , reconstructing the transformation vector, optimizing the treatment of receptor tissues, and inventing a new method for screening positive transformants. (3) Results: The established ATMT system involved replacing the CaMV35S promoter of pCAMBIA-1301 with the promoter of to construct the pCAMBIA-SH- transformation vector.

View Article and Find Full Text PDF

Due to the radioactivity of uranium, the discharged nuclear wastewater not only causes certain damage to the ecology, but also causes certain harm to human life and health. Adsorption is considered to be one of the most effective ways to remove uranium. In this paper, a kind of MoS adsorbent was prepared by the solid phase synthesis method and functionalized with NiCo-LDH.

View Article and Find Full Text PDF

Experimental Study on Enhanced Oil Recovery Effect of Profile Control System-Assisted Steam Flooding.

Polymers (Basel)

November 2023

Heilongjiang Provincial Key Laboratory of Oilfield Applied Chemistry and Technology, School of Chemical Engineering, Daqing Normal University, Daqing 163712, China.

Steam flooding is an effective development method for heavy oil reservoirs, and the steam flooding assisted by the profile control system can plug the dominant channels and further improve the recovery factor. High-temperature-resistant foam as a profile control system is a hot research topic, and the key lies in the optimal design of the foam system. In this paper, lignin was modified by sulfonation to obtain a high-temperature-resistant modified lignin named CRF; the foaming agent CX-5 was confirmed to have good high-temperature foaming ability by reducing the surface tension; the formula of the profile control system (A compound system of CRF and CX-5, abbreviated as PCS) and the best application parameters were optimized by the foam resistance factor.

View Article and Find Full Text PDF

Enhanced stability of CsPbBr nanocrystals through AlO and polymer coating.

Phys Chem Chem Phys

January 2024

Heilongjiang Provincial Key Laboratory of Oilfield Applied Chemistry and Technology, School of Mechatronic Engineering, Daqing Normal University, Daqing 163712, China.

Lead halide perovskite nanocrystals have emerged as a promising candidate for next-generation display applications due to their attractive optical properties and low-cost production. However, the environmental stability of perovskite remains a major challenge, hindering their practical applications and scalability for commercialization. In this study, we present an effective method to enhance the stability of CsPbBr nanocrystals by coating them with a combination of AlO and a polymer.

View Article and Find Full Text PDF

Enhanced Polyacrylamide Degradation via OH Radical-Initiated Single-Electron Transfer.

ACS Omega

December 2023

NHC Key Laboratory of Nuclear Technology Medical Transformation, Mianyang Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Mianyang, Sichuan 621099, China.

Hydroxyl (OH) radicals, as common radicals in aqueous environments, play an important role in inducing the degradation reactions of polymers. However, understanding the fundamental mechanisms of radical-induced degradation of polymers at the atomic level remains a formidable challenge. In this study, we employ density functional theory to investigate the geometric and electronic structural properties of polyacrylamide (PAM) in (-CHCHCONH-) ( = 2-6) complexes.

View Article and Find Full Text PDF

Transfer, transportation, and adsorption of UV-B by Mg-N co doped carbon quantum dots: Response of growth indicators, antioxidant effect and mechanism explanation.

Spectrochim Acta A Mol Biomol Spectrosc

February 2024

Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, PR China. Electronic address:

Mg and N co-doped carbon quantum dots (Mg-N-CQDs) were synthesized and applied to alleviate oxygen toxicity by UV-B radiation and enhance antioxidative responses to wheat seedlings. It showed that Mg-N-CQDs pre-treatment attenuated the UV-B stress effects in a dose-dependent manner, as indicated by enhancing the characteristics of seed germination and early seedling growth parameters. Meanwhile, Mg-N-CQDs can be applied in plant nutrient solutions with nitrogen, phosphorus, potassium, and other fertilizers to promote the growth of seedlings.

View Article and Find Full Text PDF