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Study on the Temperature and Salt Resistance of Novel Surfactants for Enhanced Oil Recovery

CHEMISTRY AND TECHNOLOGY OF FUELS AND OILS 2025年第1期61卷 66-80页

作者： wang, Weilin Ming, Wuxiao Guo, Hongxia wang, Junsen Yang, Liuhai Qing, suwen Bo, Yangxing Dong, Yanzhan PetroChina Changqing Oilfield Co Xian Shaanxi Peoples R China Shaanxi Haoshou Energy Technol Co Ltd Xian Shaanxi Peoples R China

In recent years, enhanced oil recovery (EOR) techniques, such as surfactant flooding and polymer flooding, have demonstrated significant success in improving oil recovery rates in conventional reservoirs, achieving objectives like water control, increased oil production, and cost-effectiveness. However, high-temperature and high-salinity conditions in deep and ultra-deep reservoirs present substantial challenges to conventional EOR systems. Consequently, research on temperature- and salt-resistant EOR systems is critical for enhancing recovery in these challenging environments. This paper reviews the progress in the development of temperature- and saltresistant EOR systems both domestically and internationally. By discussing the structure and properties of four key EOR systems, we analyze their mechanisms of action and effectiveness in enhancing oil recovery. The study reveals that the selected surfactant systems exhibit excellent temperature resistance, withstanding temperatures of up to 140-160 degrees C, making them suitable for high-temperature reservoirs. Additionally, these surfactant systems show strong resistance to both monovalent and divalent salts, withstanding Na+ concentrations of 15,000-50,000 mg/L and Ca2+ concentrations of 1,500-4,500 mg/L, which makes them effective for use in highly saline reservoirs.

关键词： deep reservoirs temperature and salt resistance enhanced oil recovery improved oil recovery

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Construction and expression of multi-stage antigen fusion protein RPC4 vaccine for Mycobacterium tuberculosis and its immunogenicity analysis in combination with adjuvant DIMQ

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TUBERCULOSIS 2025年 152卷 102635-102635页

作者： wang, Xiaochun Xu, Yun Zhong, Qiangsen Zhang, Zian Kong, LingYun Zhou, Mingming wang, Runlin Pi, Xinxin Qiao, suwen Anhui Univ Sci & Technol Affiliated Hosp 1 Huainan 232001 Peoples R China Anhui Univ Sci & Technol Sch Med Dept Pathogen Biol Huainan 232001 Peoples R China Anhui Univ Sci & Technol Sch Med Dept Immunol Huainan 232001 Peoples R China

Mycobacterium tuberculosis (M. tb) serves as the main pathogen responsible for Tuberculosis (TB). It predominantly targets the lungs and leads to a persistent infectious disease. The spread of drug-resistant tuberculosis and the exacerbation of economic burdens due to co-infections with Human Immunodeficiency Virus (HIV)/M. tb pose significant challenges in prevention and treatment. The BCG vaccine is currently the only approved (TB) vaccine, but its protective effect is limited for adults. In this research, we engineered the fusion protein gene RPC4, incorporating four crucial antigens from M. tb. The study revealed that the IFN-gamma levels in the peripheral blood of infected patients significantly surpassed those in healthy individuals. To assess the immune response of RPC4 as a BCG-enhanced vaccine following initial immunity, researchers administered it alongside the novel adjuvant DIMQ to immunize mice. Experiments revealed that the BCG + RPC4/DIMQ vaccine induces a substantial immunogenic response in the mice.

关键词： Fusion proteins Subunit vaccines Immunogenicity Mycobacterium tuberculosis

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Nanoporous anodic alumina photonic crystals for solid-state lasing systems: state-of-the-art and perspectives

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JOURNAL OF MATERIALS CHEMISTRY C 2025年第3期13卷 985-1012页

作者： Gunenthiran, Satyathiran wang, Juan Law, Cheryl suwen Abell, Andrew D. Alwahabi, Zeyad T. Santos, Abel Univ Adelaide Sch Chem Engn Adelaide SA 5005 Australia Univ Adelaide Inst Photon & Adv Sensing Adelaide SA 5005 Australia Univ Adelaide Dept Chem Adelaide SA 5005 Australia

Photonic crystals (PCs)-dielectric materials with a refractive index that is modulated periodically across the space-are essential components for a broad variety of photonic technologies requiring precise light-manipulation capabilities such as telecommunications, sensing, imaging, energy, stealth, and environmental remediation. Of all these, the emission of light from a radiation source embedded within a PC structure has been envisioned for engineering novel forms of light-emitting and quantum optics systems since the formalization of the PC concept by Yablonovitch and Jonh in 1987. Nanoporous anodic alumina (NAA) fabricated by electrochemical oxidation-anodization-of aluminum provides an ideal and versatile effective medium that can be precisely engineered to create multiple forms of PC structures to harness distinct light-matter interactions (e.g., Bragg diffraction, constructive recirculation, confinement, and interference). The nanoporous framework of NAA-PCs can accommodate a range of light-emitting materials as gain media to modulate the properties of emitted light across the optical spectrum. This review provides an up-to-date overview of recent advances in the field of NAA-PC technology, including new anodization strategies and photonic crystal structures, and focuses on their application in light-emitting and lasing systems. We conclude our review with a list of challenges and opportunities, and the future prospects of this exciting field.

关键词： Electrochemical oxidation

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CA3 Pyramidal Neuron Activation Promotes Cognitive Resilience to Inflammation-Induced Cognitive Inflexibility

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CNS NEUROSCIENCE & THERAPEUTICS 2025年第2期31卷 e70271页

作者： Zuo, Wenqiang Fang, suwen Xu, Tiantian Li, Yumeng Zhao, Jianshuai Xie, Xiaoyan wang, Taozhi Hou, Wugang wang, Minghui Fourth Mil Med Univ Xijing Hosp Dept Anesthesiol & Perioperat Med Xian Peoples R China

Aims Cognitive dysfunction represents a prominent symptom in numerous prevalent mental illnesses, with systemic inflammation induced by cytokines recognized as a critical factor contributing to cognitive impairments. However, a significant proportion of individuals exposed to systemic inflammation do not develop cognitive dysfunction;instead, they exhibit adaptive responses to this adverse condition. This study aims to investigate the neural activity patterns within the hippocampus and the potential mechanisms that mediate cognitive resilience, particularly in the context of inflammation. Methods We investigated the effects of systemic IL-1 beta (Interleukin-1 beta) on learning, spatial memory, and cognitive flexibility using the Barnes maze test (BMT). We further analyzed specific activity changes in the hippocampus of mice exhibiting cognitive resilience versus susceptibility through immunofluorescence, fiber photometry, and behavioral assessments. Additionally, we employed chemogenetic modulation to explore the role of dCA3 pyramidal neurons in cognitive inflexibility induced by systemic inflammation. Results Systemic inflammation induces cognitive inflexibility while leaving learning and memory intact. Notably, dCA3 activity was elevated in cognitively resilient mice compared to their susceptible counterparts. Fiber photometry data revealed higher activity in the dorsal CA3 (dCA3) when the mice approached the previous target quadrant during the reversal stage of BMT. Importantly, the activation of CaMKII+ pyramidal neurons in the dCA3 mitigated cognitive inflexibility induced by systemic IL-1 beta administration. Conclusions Activation of hippocampal dCA3 neurons, rather than dentate gyrus (DG) neurons, enhances cognitive resilience by improving cognitive flexibility during BMT-related paradigm shifting under sustained inflammation.

关键词： cognitive flexibility cognitive resilience cornu ammonis area 3 IL-1 beta systemic inflammation

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Efficient Decryption Architecture for Classic McEliece 24

Efficient Decryption Architecture for Classic McEliece

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24th International Symposium on Quality Electronic Design (ISQED)

作者： Qiao, Xinyuan Song, suwen Tian, Jing wang, Zhongfeng Nanjing Univ Sch Elect Sci & Engn Nanjing Peoples R China

ISBN: (纸本)9798350334753

As one of the candidates evaluated in the process of the National Institute of Standards and Technology (NIST) post-quantum cryptography standardization, the Classic McEliece, is being widely studied for its strong security. In existing decryption architectures, the Goppa decoder is logic resource intensive, and the fast Fourier transform (FFT) unit limits its achievable frequency. In this paper, a novel folded Goppa decoder based on enhanced parallel inversionless Berlekamp-Massey (ePiBM) algorithm is proposed for complexity reduction, and a two-dimensional optimization is adopted to eliminate the frequency bottleneck caused by the FFT unit. In addition, for the finite field inversion, which is a commonly used operation in decryption, an even power-based computation scheme is presented to reduce the cost of logic resources. Based on these optimizations, a complete decryption architecture is finally developed and implemented on the Altera Stratix V FPGA. Experimental results show that the proposed decryption processor can reduce up to 37.6% of logic resources and save the Time x Logic by up to 56.9% over the prior art.

关键词： Post-quantum cryptography (PQC) Classic McEliece Goppa code low complexity fast Fourier transform (FFT)

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Structural characterization of different starch-fatty acid complexes and their effects on human intestinal microflora

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JOURNAL OF FOOD SCIENCE 2023年第8期88卷 3562-3576页

作者： Li, Dan wang, Xin wang, Jilite wang, Mingchun Zhou, Jiaping Liu, suwen Zhao, Juan Li, Jing wang, Hao Tianjin Univ Sci & Technol TUST State Key Lab Food Nutr & Safety Tianjin Peoples R China Hetao Coll Dept Agr Bayannur Inner Mongolia Peoples R China Anhui Agr Univ Dept Food Sci & Engn Hefei Peoples R China Hebei Normal Univ Sci & Technol Coll Food Sci & Technol Qinhuangdao Hebei Peoples R China Tianjin Univ Sci & Technol TUST State Key Lab Food Nutr & Safety Tianjin 300457 Peoples R China Tianjin Univ Sci & Technol Res Ctr Modern Anal Technol Tianjin 300457 Peoples R China

Resistant starch type 5 (RS5), a starch-lipid complex, exhibited potential health benefits in blood glucose and insulin control due to the low digestibility. The effects of the crystalline structure of starch and chain length of fatty acid on the structure, in vitro digestibility, and fermentation ability in RS5 were investigated by compounding (maize, rice, wheat, potato, cassava, lotus, and ginkgo) of different debranched starches with 12-18C fatty acid (lauric, myristic, palmitic, and stearic acids), respectively. The complex showed a V-type structure, formed by lotus and ginkgo debranched starches, and fatty acid exhibited a higher short-range order and crystallinity, and lower in vitro digestibility than others due to the neat interior structure of more linear glucan chains. Furthermore, a fatty acid with 12C (lauric acid)-debranched starches complexes had the highest complex index among all complexes, which might be attributed to the activation energy required for complex formation increased with the lengthening of the lipid carbon chain. Therefore, the lotus starch-lauric acid complex (LS12) exhibited remarkable ability in intestinal flora fermentation to produce short-chain fatty acid (SCFAs), reducing intestinal pH, and creating a favorable environment for beneficial bacteria.

关键词： fecal fermentation in vitro digestion short-chain fatty acids starch-fatty acid complexes

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Regulation of Perovskite Nucleation and Orientated Crystal Growth via In Situ Self-Crosslinking Polymer for Bright Perovskite Light-Emitting Diodes

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ADVANCED OPTICAL MATERIALS 2025年第11期13卷

作者： Cheng, suwen Zhang, Yupeng Chu, Ying wang, Yanchen Xie, Yuan Yu, Chen Dong, Jingjin Cao, Jiupeng wang, Fangfang Huang, Wei wang, Aifei Qin, Tianshi Nanjing Tech Univ Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM Key Lab Flexible Elect KLOFE Nanjing 211816 Jiangsu Peoples R China Nanjing Tech Univ Inst Adv Mat IAM Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM Nanjing 211816 Jiangsu Peoples R China Henan Inst Flexible Elect HIFE Zhengzhou 450046 Henan Peoples R China Sun Yat Sen Univ Sch Flexible Elect SoFE Shenzhen 510275 Guangdong Peoples R China Sun Yat Sen Univ State Key Lab Optoelect Mat & Technol OEMT Shenzhen 510275 Guangdong Peoples R China

Hybrid halide perovskite films are becoming increasingly efficient in various applications, but several challenges still remain to be overcome. In this study, thermally polymerized additive N-vinyl-2-pyrrolidone (NVP) is utilized to tune the crystallization and orientation of mixed organo-metal perovskite films. Using in situ spectroscopy, it is demonstrated that NVP plays a crucial role in prolonging the crystallization process and separating the nucleation and crystal growth by forming an NVP-precursor intermediate phase. Additionally, the intermediate adduct effectively passivates defects, reduces nonradiative recombination, improves crystallinity, and enhances the transmission of charge carriers. NVP-containing perovskite light-emitting diodes (PeLEDs) are subsequently developed that exhibit stable and bright green luminance exceeding 240 000 cd m-2. These findings provide valuable insights into manipulating the crystallization behavior of mixed organo-metal perovskite films.

关键词： hybrid halide perovskite films light-emitting diodes perovskite nucleation regulation perovskite orientation regulation self-crosslinking polymer

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高煤阶煤裂隙发育特征对煤层气开发的影响--以沁水盆地南部郑庄区块为例

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中国煤层气 2022年第3期19卷 12-15页

作者：李学博刘春春张武昌赵家攀杨宁王素稳中国石油华北油田山西煤层气分公司山西046000

为了明确高煤阶煤裂隙发育特征对煤层气开发的影响,以沁水盆地南部郑庄区块为研究对象。采用系统分析法,利用数据建模,从流体渗流角度解释了资源富集但未高效产出的原因。研究表明,煤岩类型和构造共同控制了裂隙发育程度。综合评价为研... 详细信息

为了明确高煤阶煤裂隙发育特征对煤层气开发的影响,以沁水盆地南部郑庄区块为研究对象。采用系统分析法,利用数据建模,从流体渗流角度解释了资源富集但未高效产出的原因。研究表明,煤岩类型和构造共同控制了裂隙发育程度。综合评价为研究区西南部内生裂隙不发育,外生裂隙适度发育;中北部内生裂隙发育,外生裂隙局部适度发育。结合流体产出特征,明确了裂隙发育特征对煤层气开发的影响。

关键词：高阶煤裂隙发育渗流通道高效开发煤岩类型

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A High-Speed Implementation of Open FEC Decoder Based on Optimized Storage Strategy 24

A High-Speed Implementation of Open FEC Decoder Based on Opt...

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24th IEEE International Conference on Communication Technology, ICCT 2024

作者： Qiao, Xinyuan He, Changfu Chen, Yuxing Song, suwen wang, Zhongfeng Sun Yat-sen University School of Integrated Circuits Shenzhen China Nanjing University School of Electronic Science and Engineering Nanjing China

ISBN: (纸本)9798350363760

Following the proposal of 400G fiber-optical communication standard, the next-generation systems with throughput up to 800 Gbps have gained wide interest. This work presents a decoder implementation of the open forward error correction (oFEC) adopted by the Open ROADM standard for high-speed fiber-optical communications. To meet the demand for high speed, a fully pipelined decoding architecture is designed. However, the special coding scheme of oFEC poses great challenges to the memory design, in which potential structural and data hazards can cause pipeline stalls and hence decrease the throughput. In this paper, an optimized storage strategy and several methods are proposed to completely solve those hazards. Equipped with these methods, a hazard-free pipelined decoder for the oFEC is developed and implemented under 28-nm technology. Synthesis results demonstrate that the proposed decoder can achieve a throughput of 902 Gbps, making it suitable for 800G fiber-optical communication systems. © 2024 IEEE.

关键词： Decoding

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Development and validation of a predictive model for urinary incontinence postpartum: a prospective longitudinal study

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INTERNATIONAL UROGYNECOLOGY JOURNAL 2022年第6期33卷 1609-1615页

作者： wang, Xiaojuan Jin, Ying Xu, Xuefen wang, Hongyan Feng, suwen Zhejiang Univ Sch Med 866 Yu Hang Tang Rd Hangzhou 310058 Zhejiang Peoples R China Zhejiang Univ Womens Hosp Sch Med 1 Xue Shi Rd Hangzhou 310006 Zhejiang Peoples R China

Introduction and hypothesis Urinary incontinence is a common and burdensome problem amongst women. Although it can be prevented, little progress has been made. Identifying individuals at risk remains the key to the prevention of urinary incontinence. Methods Eligible women were enrolled in the obstetric wards of a tertiary maternity hospital in 2020. Urinary incontinence was measured using a well-accepted questionnaire. Logistic regression with a backward stepwise process was used for predictor selection. The discrimination and calibration of the nomogram were measured using the area under the ROC curve (AUC), Hosmer-Lemeshow test and calibration curve respectively. Bootstrapping procedure with 1000 resamples was used for internal validity. A temporal split (7:3) was made and data collected from the later period were used for temporal validation. Results Seven predictors including birth mode, urinary incontinence before and during pregnancy, place of residence, feeding pattern, parity, and age at first birth remained in the final model. The AUC was 0.757 (95% CI: 0.72-0.80) and 0.759 (95% CI: 0.70-0.82) in the derivation and validation cohorts respectively. No significant differences were detected in the Hosmer-Lemeshow test and calibration curve in both cohorts. Conclusions The nomogram proved to be a convenient and reliable tool in the clinical setting for risk assessment of postpartum incontinence, which can be applied during pregnancy and the postnatal period for individual risk estimates of postpartum incontinence.

关键词： Maternity care Nomogram Postpartum period Prediction Prospective studies Risk assessment Urinary incontinence

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